• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    HOPPER DOOR AND HOPPER DOOR TRIGGER ASSEMBLY. A mining machine includes a boom, an arm attached to the boom, a bucket attached to the arm, and a bucket door pivotally attached to the bucket. The mining shovel also includes a bucket door trigger assembly including a trigger motor coupled to the boom, a trigger drum coupled to the arm, a link assembly coupled to the bucket door, a first actuation element extending directly to from the trigger motor to the trigger drum, and a second actuating element that extends directly from the trigger drum to the link assembly.
    公开号:BR102014024027B1
    申请号:R102014024027-6
    申请日:2014-09-26
    公开日:2021-05-25
    发明作者:Matthew L. Gross；Joseph J. Colwell；Richard Nicosn
    申请人:Joy Global Surface Mining Inc；
    IPC主号:
    专利说明:

    CROSS REFERENCE TO RELATED ORDERS
    [001] This application claims priority to US Provisional Application No. 61/883,982, filed September 27, 2013, and US Provisional Application No. 61/968030, filed March 20, 2014, whose entire contents of each one are incorporated herein by reference. FIELD OF THE INVENTION
    [002] The present invention refers to the field of mining machines. Specifically, the present invention relates to a bucket door and a bucket door trigger assembly in a mining machine such as a cable excavator.
    [003] Industrial mining machines, such as electric cable or power excavators, cable dredgers, etc., are used for carrying out excavation operations to remove material from a mine bench. On a conventional cable excavator, a bucket is attached to an arm, and the bucket is supported by a cable or rope, which is passed through a boom pulley. The strand is attached to a bail that is pivotally coupled to the bucket. The arm is moved along a saddle block to maneuver from a bucket position. During a lifting phase, the strand is wound by a winch onto a machine base, lifting the bucket up through the bench and releasing the material to be excavated. To release material disposed in the bucket, a bucket door is pivotally coupled to the bucket. When not engaged with the hopper, the hopper door pivots away from a bottom of the hopper, thereby releasing material out through a bottom of the hopper. SUMMARY
    [004] According to one construction, a mining excavator includes a boom, an arm attached to the boom, a bucket attached to the arm, and a bucket door pivotally attached to the bucket. The mining excavator also includes a bucket door trigger assembly that includes a trigger motor attached to the boom, a trigger drum attached to the cable, a link assembly attached to the bucket door, an extendable first actuation element. directly from the trigger motor to the trigger drum, and a second actuation element extending directly from the trigger drum to the link assembly.
    [005] According to another construction, a bucket door trigger assembly includes a trigger motor, an actuation element coupled to the trigger motor, and a link assembly coupled to the actuation element. The connecting assembly includes a lever arm coupled to the actuating element, a rod coupled to the lever arm about a first joint, a snap bar coupled to the rod about a second joint, and a snap bar coupled to the base, wherein activation of the trigger motor causes generally linear movement of the drawbar and a drawbar insert, and wherein the first and second joints allow the rod to move in multiple degrees of freedom.
    [006] According to another construction, a bucket door includes a bottom panel that has a plurality of openings that open to an internal cavity within the bucket door, a top panel and a plurality of ribs extending between the bottom panel and the top panel.
    [007] Other aspects of the invention will become evident upon a consideration of the detailed description and associated drawings. BRIEF DESCRIPTION OF THE DRAWINGS
    [008] Figure 1 is a perspective view of a mining excavator.
    [009] Figure 2 is a partial side view of a boom, an arm, a bucket and a bucket door of the mining excavator of Figure 1, as well as a bucket door trigger assembly coupled to the excavator.
    [010] Figure 3 is a perspective view of a trigger drum and actuating elements of the bucket door trigger assembly.
    [011] Figure 4 is a side view of an actuation element according to another construction.
    [012] Figure 5 is a top view of the actuating element of figure 4.
    [013] Figure 6 is a side view of the actuation element of Figure 4 coupled to the trigger drum.
    [014] Figures 7 and 8 are perspective views of the trigger drum and the actuation element of figure 4, coupled to the connection assembly.
    [015] Figure 9 is a perspective view of the bucket door, and a bucket door trigger assembly connecting assembly partially disposed on the bucket door.
    [016] Figure 10 is a perspective view of the connection assembly with the bucket door removed.
    [017] Figure 11 is an enlarged view of a lever arm of the link assembly partially arranged on the bucket door.
    [018] Figures 12 and 13 are enlarged views of a joint between the lever arm and a first end of a rod in the connecting set.
    [019] Figure 14 is an enlarged view of a joint between a second end of the rod and an engagement lever bar on the connecting assembly.
    [020] Figure 15 is an enlarged view of a joint between the coupling lever bar and a coupling bar on the connecting assembly.
    [021] Figure 16 is a view of the gasket of Figure 15, with a housing element removed, illustrating one end of the engagement lever bar.
    [022] Figure 17 is a view of the gasket of Figure 15, with the drawbar removed, illustrating an insert.
    [023] Figures 17A and 17B illustrate an embodiment of a freewheel assembly and a drawbar insert to be used with the connecting assembly.
    [024] Figure 18 is a perspective view of the bucket door, illustrating sized openings and cavities for receiving and maintaining the connection set.
    [025] Figure 19 is a cross-sectional view of the bucket door, taken along lines 19-19 in Figure 18, illustrating a channel sized to receive and maintain a portion of the connecting assembly.
    [026] Figure 20 is a perspective view of the bucket door, illustrating a top panel of the bucket door.
    [027] Figure 21 is a perspective view of the bucket door, illustrating a hitch bar housing for the hitch bar.
    [028] Figures 22 and 23 are perspective views of the bucket door, with a portion of the connecting assembly disposed therein.
    [029] Figure 24 is a perspective view of an alternative design of the bucket door, which illustrates sized openings and cavities to receive and maintain the connection assembly.
    [030] Figure 25 is a sectional view of the bucket door, taken along lines 25-25 in Figure 24, illustrating a channel sized to receive and maintain a portion of the connecting assembly.
    [031] Figure 26 is a perspective view of the mining excavator, illustrating a bucket channel that receives a portion of a link assembly for engaging a bucket door in the bucket.
    [032] Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and arrangement of components set out in the description below or illustrated in the drawings below. The invention is capable of other modalities and of being practiced or being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be considered as limited. DETAILED DESCRIPTION
    [033] Figure 1 illustrates an excavator with power 10. The excavator 10 includes a mobile base 15, drive rails 20, a rotary table 25, a revolution frame 30, a boom 35, a lower end 40 of the boom 35 ( also called a lance foot), an upper end 45 of the lance 35 (also called a lance tip), traction cables 50, a gantry pulling member 55, a gantry compression member 60, a pulley 65 mounted on rotary shape on the upper end 45 of boom 35, a bucket 70, a bucket door 75 pivotally coupled to bucket 70, a lifting sling 80, a winch drum (not shown), a bucket arm 85, a block a saddle 90, a loader shaft 95, and a drive unit (also called a crowbar drive, not shown). The rotating frame 25 allows a rotation of the upper frame 30 relative to the lower base 15. The rotating table 25 defines a geometric axis of rotation 100 of the excavator 10. The geometric axis of rotation 100 is perpendicular to a plane 105 defined by the base 15 and usually corresponds to a terrain grade or a supporting surface.
    [034] The movable base 15 is supported by the drive rails 20. The movable base 15 supports the turntable 25 and the frame of revolution 30. The turntable 25 is capable of 360 degrees of rotation with respect to the movable base 15. boom 35 is pivotally connected at the lower end 40 to frame of revolution 30. Boom 35 is held in an up-and-outward relationship with frame of revolution 30 by pull cables 50, which are anchored on the gantry traction member 55 and on the gantry compression member 60. The gantry compression member 60 is mounted on the frame of revolution 30.
    [035] The bucket 70 is suspended from the boom 35 by the lifting sling 80. The lifting sling 80 is wound over the pulley 65 and affixed to the bucket 70 on a bail 110. The lifting sling 80 is anchored to the drum of winch (not shown) of the revolution frame 30. The winch drum is driven by at least one electric motor (not shown) which incorporates a drive unit (not shown). As the winch drum rotates, the lifting sling 80 is unwound to lower the bucket 70 or pulled to raise the bucket 70. The bucket cable 85 is also attached to the bucket 70. The bucket cable 85 is slidably supported on the bucket. saddle block 90, and saddle block 90 is pivotally mounted to boom 35 on loader shaft 95. Bucket rope 85 includes a rack and tine formation on it that fits into a drive pinion (not shown) mounted on saddle block 90. The drive pinion is driven by an electric motor and a drive unit (not shown) for extending or retracting the bucket cable 85 relative to the saddle block 90.
    [036] An electrical power source (not shown) is mounted on the 30 revolution frame for the provision of power to an electric hoist motor (not shown) for driving the hoist drum, one or more electric crankshaft motors (not shown). shown) for driving the crankshaft drive unit, and one or more electric oscillating motors (not shown) for turning the rotary table 25. Each of the crankshaft, lifting and oscillating motors is driven by its own motor controller, or, alternatively, it is triggered in response to control signals from a controller (not shown).
    [037] Figure 2 illustrates a 115 bucket door trigger assembly for the excavator 10. The 115 bucket door trigger assembly releases the bucket door 75 from the bucket 70 and allows the bucket door 75 to pivot away from a bottom of the bucket 70. Although the bucket door trigger assembly 115 is described in the context of the 10 power excavator, the bucket door trigger assembly 115 can be applied to, performed by, or used in conjunction with a variety industrial machinery (eg cable dredgers, excavators, tractors, etc.).
    [038] Referring to Figure 2, the bucket door trigger assembly 115 includes a trigger motor 120 disposed along the lower end 40 of the boom 35. The trigger motor 120 is driven by an electrical power source 122 ( illustrated schematically) with its own motor controller. In some constructions, trigger motor 120 is actuated in response to control signals sent from a remotely located controller (e.g., a controller in frame 30).
    [039] Referring to Figures 2 and 3, a first actuating element 125 (for example, a strand, a strap or chain) is coupled to and extends directly from the trigger motor 120 to a trigger drum 130. trigger barrel 130 is releasably coupled to bucket handle 85 with at least one mounting frame 135 (e.g., a set of screws and nuts), so that trigger barrel 130 can possibly be removed for repair or replaced by a 130 different trigger drum.
    [040] As illustrated in Figure 3, trigger drum 130 includes a first drum portion 140 and a second drum portion 145, both aligned along a common axis 150 defining a geometric axis of rotation 152. drum 140 is larger (e.g., in diameter) than drum portion 145, although in some constructions drum portion 145 is larger than drum portion 140. Actuating element 125 is coupled to drum portion 140 (e.g., secured at one end of the actuating element 125 to the drum portion 140), so that the trigger motor 120 rotates, the actuating element 125 is wrapped around or unwound from the drum portion 140.
    [041] Referring to Figures 2 and 3, a second actuating element 155 (e.g., a strand, a strap or a chain) is coupled to and extends from the drum portion 145 directly to a connecting assembly 160. The actuating element 155 is coupled to the barrel portion 145 (e.g., fixed at one end of the actuating element 155 to the barrel portion 145), so that the trigger motor 120 rotates, the actuating element 155 is wound. around or unrolled from the drum portion 145.
    [042] Due to the difference in size of the drum portions 140, 145, the trigger drum 130 generates a mechanical advantage equivalent to the ratio of the diameter of the drum portion 140 to the diameter of the upper end 45. In some constructions, the ratio of drum portion diameter 140 to drum portion diameter 145 is greater than approximately 2.0. In some builds, the ratio is between approximately 2.0 and 4.0. In some constructions, the ratio is greater than 3.0. Other constructs include different ranges and values.
    [043] Trigger drum 130 advantageously removes the need for multiple pulleys, pulleys or other structures for routing actuating elements 125, 155 along excavator 10. Instead, as described above, first actuating element 125 is routed directly from trigger motor 120 to trigger drum 130, and second actuating element 155 is directly routed from trigger drum 130 to link assembly 160.
    [044] The trigger drum 130 also advantageously provides a reduction in the whipping effect generated during a movement of the excavator 10. Due to the fact that the first and second actuating elements 125, 155 are kept separate and are not directly coupled to one another , and because the trigger drum 130 is heavy (eg at least 500 pounds (226.8 kg), any lashes on the actuating element 125 (eg generated by a quick movement or a rocking excavator 10) will not substantially affect the movement and functionality of actuation element 155. Instead, a significant amount of inertia must be overcome in trigger drum 130, before second actuation element 155 is negatively affected by any whipping occurring on the actuating element 125. In some constructions, trigger drum 130 also includes one or more dampers (eg, linear or rotary) or friction disc brakes that further assist in dampening. any lashes occurring on the actuating element 125.
    [045] Figures 4 to 6 illustrate an actuation element 165 according to another construction. Actuating element 165 is a roller chain that allows for flat winding and a flat contact surface between actuating element 165 and drum 130, similarly to a sprocket, without a chain twist that can often cause wear. The life of actuation element 165 is increased over traditional link chains (e.g., such as actuation element 155 illustrated in Figure 3), particularly at the point where actuation element 165 engages with link assembly 160 , as well as where the actuation element 165 wraps around the drum 130. The actuation element 165 provides improved wear characteristics for movement in the rolling direction of the chain over the drum 130. A reduction in wear and an improvement in the life of these stitching eliminates the need to constantly replace the 165 actuating element, which can occur every two weeks or sooner when a standard link chain is used as an actuating element. Less frequent replacement of the actuation element reduces the maintenance cost associated with the excavator 10. In some constructions, the actuation element 165 lasts as long as nine to twelve months.
    [046] Referring to Figures 4 and 5, in some constructions, actuation element 165 includes high strength end connections 170 as well as connectors 175 mated to end connections 170. Connectors 175 mate to a first end 180 of the actuating member 165 to drum 130 and a second end 185 of actuating member 165 to connector assembly 160. Connectors 175 include holes 190 for coupling actuating member 165 to a pin or other structure on drum 130 and connector assembly 160. End connections 170 and connectors 175 provide longer wear life, wherein actuating element 165 is coupled to barrel 130 and connection assembly 160. In some constructions, one or more of the end connections 170 and connectors 175 assume all or substantially all wear on actuating element 165 during use.
    [047] In some constructions, actuation element 165 is coupled to a standard link chain length and link assembly 160 so as to remove a chain twist that causes wear on drum 130. In other constructions, the element actuation 165 is coupled between two drums 130, or between a drum 130 and another lever or link assembly in a mining machine other than link assembly 160.
    [048] Referring to Figures 7 to 12, the link assembly 160 includes a lever arm 195 configured to be coupled to the actuating element 155 (or 165). Lever arm 165 is disposed at least partially in bucket door 75, and is pivotally coupled to bucket door 75 around a pivot structure 200, such as a bolt or rod (figures 11 and 12) disposed in bucket door 75. As actuation member 155 is moved by trigger motor 120, lever arm 195 is pivoted around pivot frame 200. Other constructions include different locations for lever arm 195 than illustrated , as well as different shapes and sizes. In some constructions, the lever arm 195 is disposed substantially entirely inside or entirely outside the bucket door 75.
    [049] With continued reference to figures 9 through 12, the link assembly 160 includes an additional pivot structure 205, such as a bolt or rod (figures 11 and 12) coupled to the lever arm 165. The pivot structure 205 receives one end of actuation element 155 (e.g., receives a link of a chain from actuation element 155, or connector 175 in the case of actuation element 165), allowing actuation element 155 to pivot relative to the actuating arm. lever 195 as actuating element 155 is moved by trigger motor 120. Pivot structure 205 is sized and shaped to absorb a substantial amount of tension generated by the pulling force of actuating element 155 on lever arm 195, as actuating element 155 is moved by trigger motor 120. Pivot frame 205 is easily removable from lever arm 195 for repair or replacement.
    [050] With reference to Figures 10 to 14, the link assembly 160 further includes a rod 210 pivotally coupled to the lever arm 195. The rod 210 includes a first end 215 that is received at least partially in the lever arm 195. and pivots about a pivot structure 220 (including, for example, a bolt or rod as shown in Figures 11 and 12) coupled to lever arm 195 such that rod 210 is capable of pivoting with respect to the lever arm 195. As illustrated in Figure 13, rod 210 also includes a ball bearing or bushing 225 at first end 215, thereby creating a ball joint between rod 210 and lever arm 195. Other constructions include different types of joints between rod 210 and lever arm 195 (eg, a ball joint, etc.).
    [051] Referring to Figures 10 and 14 , rod 210 further includes a second end 230 which is coupled to an engagement lever bar 235 of connector assembly 160. As with first end 215, second end 230 also includes a ball bearing or bushing 240 which receives an end 244 of the engagement lever bar 235, thereby creating a ball joint between the rod 210 and the engagement lever bar 235 which allows for freedom of movement and rotation of the rod. 210 about multiple geometric axes with respect to engagement lever bar 235. Other constructions include a different type of joint between rod 210 and engagement lever bar 235 (e.g., a ball joint, etc.).
    [052] The use of ball or ball joints between the rod 210 and the lever arm 195 and the engagement lever bar 235 allows for deflections and an adjustment of the rod 210 in the link assembly 160 during an activation of the trigger motor 120 This freedom of movement and deflection prevents damage to the components of the link assembly 160. Although the illustrated construction uses ball bearings or bushings 225, 240 at the ends of the rod 210 for receiving the ends of the lever arm 195 and the hitch lever bar 234, in other constructions, one or more of the spherical bearings or bushings are instead disposed on the lever arm 195 and/or on the engagement lever bar 235 so as to receive ends of the rod 210.
    [053] With reference to figures 10 and 15 to 17, the connecting assembly 160 further includes a hitch bar 245 that is coupled to and receives the hitch lever bar 235. With reference to figures 15 to 17, the hitch bar engagement lever 235 passes through an opening 250 in the engagement bar 245. An insert 255 (e.g., metal) is disposed in an upper portion of the opening 250. As shown in Figure 17, the insert 255 is coupled to the engagement bar. engagement 245 with fasteners 260. Insert 255 has a curved contoured lower surface 265 which substantially matches a curved contoured top surface 270 on engagement lever bar 235. Surfaces 265, 270 act as bearing surfaces to allow for some rotation and a relative movement in at least one degree of freedom between the insert 255 and the engagement lever bar 234, thereby inhibiting wear and undesired stress from damage to the connector assembly 160. The insert 255 prevents or prevents and a drawbar wear 245, and is easily removable or replaceable. In some constructions, no 255 insert is provided. Instead, an inner surface of hitch bar 245 within opening 250 has a curved contoured surface similar to surface 265.
    [054] With continued reference to Figures 15 and 16, the connector assembly 160 further includes a housing and pin assembly 272 that receives an end 275 of the engagement lever bar 235 and allows movement of the end 275 in at least one degree of freedom (eg linearly). In the illustrated construction, housing and pin assembly 272 includes a carrier 280 that is shaped to receive end 275. Carrier 280 includes a curved contoured surface 285 (FIG. 16) that substantially combines with a curved contoured surface (FIG. 16) which substantially matches a curved contoured surface 290 on engagement lever bar 235. Surface 285 retains end 275 on housing 280. Housing and pin assembly 272 further includes a pin 295 that extends through a hole 300 in an outer housing 305 and a hole 302 in the carrier 280. The carrier 280 is capable of moving (e.g., sliding) along the pin 295 in the outer housing 305, carrying the end 275 of the engagement lever bar 235. In some constructions, the pin 295 and/or the outer housing 305 are coupled (e.g., affixed) to the bucket door 75, so that when the hitch lever bar 235 is moved by the rod 210, the carrier 280 and end 275 of the hitch lever bar 235 are moved along a linear direction in the housing 305, causing the hitch bar 245 to also move generally along a linear direction.
    [055] In some constructions, other structures are used to create one or more bearing surfaces for the hitch lever bar 235, and to facilitate movement of the hitch lever bar 235 without damage to the hitch bar 245. For example, with reference to figures 17A and 17B, in some constructions a tapered roller assembly 306 is used which includes a pin 307 and a roller 308 that rotates around pin 307. Pin 307 and roller 308 are both coupled to and disposed at least partially on hitch bar 245. Roller 308 engages a curved, contoured top surface of hitch lever bar 235. In the embodiment illustrated in Figures 17A and 17B, hitch lever 235 further includes a second roller 309 which is coupled to the carrier 280 and the engagement lever bar 235 to facilitate rotational movement of the end 275 of the engagement lever bar 235.
    [056] With reference to figures 15 and 16, the hitch bar 245 includes a snapping portion 310 that facilitates an easy attachment and/or removal of the hitch bar 245 from the connecting assembly 160, for repair or replacement of the hitch bar engagement 245. In the illustrated construction, engagement portion 310 is a recessed flange 315 with a hole 320 that can receive a pin or other lifting structure that engages engagement portion 310. In other constructions, engagement portion 310 is a projection flange with a hole, or is another structure that allows for easy attachment and removal of drawbar 245 when desired.
    [057] Referring to Figures 9 and 10, the connecting assembly 160 further includes a drawbar insert 325 disposed at one end of the drawbar 245. In some constructions, the drawbar insert 325 is formed as a part. of the hitch bar 245. The hitch bar insert 325 extends from the hopper bucket door 75, and is moved together with the hitch bar 215 when the trigger motor 120 is activated and the actuating element 155 is moved. In the illustrated construction, the hitch bar insert 325 is a piece of metal that absorbs the tension imprinted on the hitch bar 245 during movement of the hitch bar 245 into and out of engagement with the bucket 70. The hitch bar insert 325 coupling is easily removed and replaced when damaged.
    [058] The connection set 160 described above advantageously protects the life of its components. For example, and as described above, the second actuating element 155 (or 165) is directly coupled to the pivot structure 205, as opposed to the lever arm 195 itself. Therefore, if the pivot frame 205 fails, the pivot frame 205 can be replaced without having to replace the entire lever arm 195. Also, the ball joints between the rod 210 and the lever arm 195 and the lever bar hitch lever 235, as well as insert 255 (or other implemented bearing frame), extend the life of link assembly 160 components by inhibiting wear and friction.
    [059] Referring to Figures 18 to 23, the bucket door 75 includes panels, openings, channels and cavities that receive and maintain the connection assembly 160 described above. In particular, bucket door 75 includes a bottom panel 330 and a top panel 335. The bottom panel 330 includes a leading edge 340 and a trailing edge 345. The bottom panel 330 also includes openings 350 that open. to an interior cavity 355 disposed within the bucket door 75. The openings 350 are spaced generally equally apart along the bottom panel 330. In the illustrated construction, at least some of the openings 350 are generally disposed closer to the edge. 340 than edge 345. Five openings 350 are illustrated, although in other constructions different numbers, sizes, shapes and arrangements of openings 350 are used.
    [060] As illustrated in Figures 18, 19, 22 and 23, openings 350 are elongated, and have first ends 360 and second ends 365. First ends 360 are disposed closer to edge 345 than second ends 365. second ends 365 of apertures 350 are disposed in a generally arcuate or curved pattern along bottom panel 330 so that second ends 365 are aligned along a curved geometric axis 370 extending along bottom panel 330 Because at least some of the apertures 350 are disposed closer to edge 340 than edge 345, bottom panel 330 includes a solid portion 375 between curved axis 370 and edge 345. structural strength to back panel 330 and bucket door 75.
    [061] With continued reference to Figures 18, 19, 22 and 23, the bucket door 75 also includes ribs 380 that are disposed between panels 330, 335. Some of the ribs 380 extend directly from the bottom panel 330 to the top panel 335. The ribs 380 provide additional structural support for the bucket door 75, to accommodate a missing material in the openings 350 and cavity 355, and also help to evenly distribute the loads in the bucket door 75 during a impact loading (eg when bucket door 75 slams when closing quickly against bucket 70). The use of structural ribs 380 allows top panel 335 to remain generally thin, helping to reduce the overall weight of the bucket door 75, while still maintaining high strength for the bucket door 75. As illustrated in figures 18, 19 , 22 and 23, some of the ribs 380 include the openings 385 that are sized and shaped to receive, hold and guide the engagement lever bar 235 on the bucket door 75.
    [062] Referring to Figure 21, the bucket door 75 further includes a drawbar housing 390 forming a channel 395 that extends from the interior cavity 355 to an outer surface 400 of the bucket door 75. In some constructions , the drawbar housing 390 is integrally formed as one piece in the bucket door 75. In some constructions, the drawbar housing 390 is a separate piece. Channel 395 is sized and configured to receive drawbar 245 and drawbar insert 325. In some constructions, drawbar housing 390 also includes one or more bearings or guide surfaces (e.g., inserts for bushing, roller bearings, other types of rollers, etc., of plastic or nylon) that facilitate a sliding motion of drawbar 245 in drawbar housing 390, and inhibit damage to drawbar 245.
    [063] Referring to Figures 18 and 22, the bucket door 75 further includes an opening 405 in an arm 410 that receives at least a portion of the lever arm 195, so that the lever arm 195 is disposed at least partially. on arm 410 of bucket door 75.
    [064] With reference to Figures 19 and 22, the arm 410 forms a rectangular box-like frame that defines an inner channel 415 that extends toward the cavity 355. The rod 210, which is coupled to the lever arm 195, extends through channel 415 and into cavity 355, where rod 210 is coupled to hitch lever bar 235. The box-like structure of arm 410 provides added structural support for bucket door 75.
    [065] With continued reference to Figures 18, 19, 22 and 23, the bucket door 75 also includes webs 417, 418 that are disposed between the openings 350, the webs 418 being primary webs that are angled directly towards the arms 410 The 418 primary souls absorb a significant amount of charge and provide additional added resistance to the 75 bucket door. In some constructions, the 418 primary souls provide a charge path along the 75 bucket door, which absorbs approximately at least 90% of a charge acting on the bucket door 75. In some buildings, the 418 primary souls absorb at least 95% of a charge acting on the bucket door 75. Other buildings include different ranges.
    [066] Openings 350, together with cavity 355, reduce the amount of material required for the 75 bucket door, which makes the 75 bucket door lighter in weight than conventional bucket doors. Although the 75 bucket door is lighter in weight than conventional bucket doors, in some constructions, the 75 bucket door has an overall structural strength equal to (or even greater) than conventional bucket doors, due to at least in part to the arrangement of the solid portion 375, the ribs 380, the box-like structure of the arms 410, the webs 417 and 418 and the top and bottom panels 345, 340 in general.
    [067] Figures 24 and 25 illustrate an alternative construction of a bucket door 420.
    [068] As illustrated in Figures 24 and 25, elongated openings 450 are provided, similarly to openings 350, elongated openings 450 having first ends 460 and second ends 465. Some of the first ends 460 are disposed closer to an edge 440 than the second ends 465. In the construction illustrated in Figures 24 to 29, the first and second ends 460, 465 are disposed in a generally arcuate or curved pattern along a bottom panel 430, so that the second ends 465 are aligned along a curved axis 470, and the first ends 460 are aligned along a curved axis 472. In some constructions, the curved axis 470, 472 are parallel. Panel 430 includes a solid portion 475 between curved axis 472 and edge 445.
    [069] Referring to Figures 24 and 25, the bucket door 420 also includes ribs 480, similar to ribs 380, which are disposed between panels 430, 435 and include openings 485 as well as a drawbar housing 490 and an opening 505 in an arm 510 that receives the lever arm 195.
    [070] As illustrated in Figure 25, bucket door 420 includes an inner channel 515 in arm 510 similar to channel 415. Bucket door 420 also includes two ribs 520 that extend through channel 515 and guide rod 210. The two ribs 520 add additional structural support to the arm 510. As illustrated in Figures 25 and 26, the rod 210 extends through the channel 515 and through an opening 525 into a cavity 455, where the rod 210 is coupled to the bar. coupling lever 235.
    [071] Referring to Figure 26, bucket 70 includes a channel 460 disposed along a lower edge portion 465 of bucket 70. Channel 460 is the drawbar housing 490 (or 390 in the case of the bucket door). bucket 75) are aligned with one another during an engaged condition, so that the drawbar insert 325 extends through the drawbar housing 490, 390 and at least partially into the channel 460, thereby locking in a movement. of bucket door 420, 75 in relation to bucket 70.
    [072] Referring to figures 1 to 26, in order to release the bucket door 420, 75 from the engaged condition, the trigger motor 120 is activated by the controller 122. When the trigger motor 120 is activated, the trigger motor 120 pulls the first actuating element 125 towards the trigger motor 120, thereby causing a rotation of the drum portion 140 about the axis 152. As the drum portion 140 rotates, the drum portion 145 also rotates about of the axis 152, causing the second actuating element 155 to be pulled towards and wrapped around the second drum portion 145.
    [073] A movement of the second actuating element 155 causes the lever arm 195 to pivot relative to the pivot structure 200, which causes the rod 210 to move (e.g., be pulled up through the opening 300 ). As the rod 210 is moved, the ball joints at the first end 215 and the second end 230 of the rod 210 allow for relative rotational movement between the rod 210 and the lever arm 195 and the engagement lever bar 235, considering any pivoting and arc movement of lever arm 195 around pivot frame 200.
    [074] As the rod 210 moves, the movement of the rod 210 generates a generally linear movement of the hitch lever bar 235, and the movement of the hitch lever bar 235 generates a generally linear movement of the hitch bar 245 in the housing of drawbar 490, 390 (eg with housing and pin assembly guide 272). As the hitch bar 245 is moved into the hitch bar housing 490, 390, the hitch insert 325 is pulled away from the bucket 70, thereby releasing the bucket door 420, 75 from the bucket 70, and allowing it to bucket door 420, 75 swings and pivots open relative to bottom of bucket 70 for material unloading. As material is unloaded, for example, onto a truck or other vehicle, the bucket door trigger assembly 115 components are positioned to stay well away from the truck and not interfere with the unloading process.
    [075] For return of the drawbar insert 325 back to the channel 460, after the material has been discharged, gravity is used (i.e., the drawbar 245 is naturally forced towards the engaged position by gravity) . In other constructions, a guide member or members are used to bias the hitch bar 245 and the hitch bar insert 325 toward the engaged position. Due to the high mechanical advantages and forces possible with the bucket door trigger assembly 115 described above, the drawbar insert 325 can be safely extended deep into channel 460 during this engaged condition. This results in a significantly lower probability of a false trigger and bucket door release 420, 75.
    [076] Referring to Figure 17B, in some constructions, the drawbar insert 325 includes a marking 495 (e.g., line, slot, groove, etc.) that aids in aligning the drawbar insert 325 in the housing of drawbar inserts 490, 390 during installation or fabrication of the bucket door 420, 75. For example, in some constructions, the drawbar insert 325 is aligned (in a non-hitched state) so that the marking 495 coincides with an external surface (eg, such as surface 400) of the bucket door 400 or 75, thereby providing an indication that the bucket door trigger assembly 115 has been installed correctly. As illustrated in Figure 17B, in some constructions, the drawbar insert 325 is installed with the plurality of fasteners 496.
    [077] In the case where the bucket door 420, 75 quickly slams against the bucket 70 with high impact (for example, because of a shock absorber failure) during the unloading process or during the drawbar 325 process Returning to the engaged position, the 115 Bucket Door Trigger Assembly is able to absorb and withstand the impact without failing or incurring desired wear. This is due at least in part to the ball joints and contoured surfaces in the connection assembly 160 described above. Similarly, the ribs 480, 380 and webs 417, 418 in the bucket door 420, 75 are also able to absorb and withstand the impact without causing damage to the bucket door 420, 75 or the link assembly 160 disposed on the 75 bucket door.
    [078] While the invention has been described in detail with reference to certain preferred embodiments, variations and modifications exist within the scope of the spirit of one or more independent aspects of the invention as described.
    权利要求:
    Claims (20)
    [0001]
    1. Bucket door trigger assembly characterized by comprising: a trigger motor; an actuation element coupled to the trigger motor; and a connector assembly coupled to the actuating element, wherein the connector assembly includes a lever arm coupled to the actuating element, a rod coupled to the lever arm about a first joint, an engagement lever bar having a first end and an opposite second end, wherein the first end is coupled to the rod about a second joint, and a latch bar coupled to the latch lever bar, wherein the connecting assembly includes a housing assembly and of a pin including a linearly movable carrier, and wherein the second end of the engagement lever bar is coupled to the carrier such that an activation of the trigger motor causes linear movement of the second end of the engagement lever bar, and wherein the first and second joints allow the rod to move in multiple degrees of freedom.
    [0002]
    2. Bucket door trigger assembly, according to claim 1, characterized in that the lever arm is coupled to the actuating element around a pin that is removable from the lever arm.
    [0003]
    A bucket door trigger assembly according to claim 1, characterized in that the connecting assembly further includes a first insert disposed at one end of the drawbar, and a second insert disposed at an opening in the bar of coupling.
    [0004]
    4. Bucket door trigger assembly according to claim 1, characterized in that the actuating element is a roller chain that includes a high strength end link, and a connector coupled to the end link, and wherein the connector includes a hole for coupling one end of the actuating element to the connector assembly.
    [0005]
    A bucket door trigger assembly according to claim 1, further including a trigger drum, wherein the actuating element includes a first actuating element extending directly from the trigger motor to the trigger drum. trigger, and a second actuating element that extends directly from the trigger barrel to the lever arm.
    [0006]
    6. A bucket door trigger assembly according to claim 5, characterized in that the trigger drum includes a first drum portion and a second drum portion both aligned along a common geometric axis of rotation, and wherein a diameter of the first drum portion is greater than a diameter of the second drum portion.
    [0007]
    7. A bucket door trigger assembly according to claim 5, characterized in that the first actuating element is coupled to the first drum portion and the second actuating element is separately coupled to the second drum portion .
    [0008]
    8. Bucket door trigger assembly according to claim 1, characterized in that the rod includes a first end coupled to the lever arm around a first ball joint at the first end, and a second end coupled to the lever bar engagement around a second ball joint at the second end, and wherein the first and second ball joints allow rotation of the rod around each of the lever arm and the lever lever bar in multiple degrees of freedom.
    [0009]
    9. A bucket door trigger assembly according to claim 1, characterized in that the housing and pin assembly includes a pin and a housing having a hole receiving the pin, and wherein the carrier further includes a hole that receives the pin.
    [0010]
    A bucket door trigger assembly as claimed in claim 9, characterized in that the carrier is movable along the pin in the housing, and wherein the carrier includes a curved contoured surface that matches a curved contoured surface at the second end of the hitch lever bar.
    [0011]
    A bucket door trigger assembly according to claim 1, characterized in that the latch bar includes an opening for receiving the latch lever bar, and wherein an insert is disposed in the opening, the insert having a bearing surface which engages a surface of the engagement lever bar.
    [0012]
    12. A bucket door trigger assembly according to claim 11, characterized in that the bearing surface of the insert is a curved contoured surface, and wherein the surface of the engagement lever bar is a curved contoured surface combined correspondingly.
    [0013]
    A bucket door trigger assembly according to claim 1, characterized in that the drawbar includes a drawbar insert disposed at one end of the drawbar.
    [0014]
    14. A bucket door trigger assembly comprising: a trigger barrel having a first barrel portion and a second barrel portion both aligned along a common geometric axis of rotation, wherein a diameter of the first portion of drum is different than a diameter of the second drum portion, and wherein the trigger drum is sized and shaped to receive a first actuating element extending from a trigger motor to the first drum portion so that the actuating element is wound or unwound around the first drum portion, and a second actuating element extending directly from the second drum portion to a lever arm of a link assembly.
    [0015]
    15. Bucket door trigger assembly according to claim 14, characterized in that it further comprises the trigger motor, the first actuation element, the second actuation element, and the connecting assembly, in which both the first barrel portion and the second barrel portion are circular, and include circumferential grooves for receiving the first actuation member and the second actuation member, respectively.
    [0016]
    16. The bucket door trigger assembly of claim 14, further comprising a mounting frame for removably attaching the trigger drum to a bucket arm.
    [0017]
    17. Bucket door trigger assembly characterized by comprising: a hitch bar having an opening sized for receiving a hitch lever bar, and an insert disposed in the opening, the insert having a sized and shaped bearing surface to fit onto a surface of the hitch lever bar.
    [0018]
    18. A bucket door trigger assembly according to claim 17, characterized in that the insert includes a roller disposed in the opening, and wherein the bearing surface is on the roller.
    [0019]
    19. A bucket door trigger assembly according to claim 17, characterized in that the opening is disposed at a first end of the drawbar, and wherein the drawbar includes a drawbar insert disposed at an opposite end of the drawbar.
    [0020]
    20. Bucket door trigger assembly according to claim 17, characterized in that the bearing surface is curved.
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    同族专利:
    公开号 | 公开日
    US20220010518A1|2022-01-13|
    RU2018127839A3|2021-12-17|
    US9890515B2|2018-02-13|
    AU2020223775A1|2020-09-17|
    US20150089847A1|2015-04-02|
    BR102014024027A2|2016-04-26|
    PE20150745A1|2015-05-17|
    MX2014011665A|2015-03-27|
    CA2866030A1|2015-03-27|
    CA3141032A1|2015-03-27|
    CN110847264A|2020-02-28|
    RU2663838C2|2018-08-10|
    PE20181308A1|2018-08-10|
    CL2014002577A1|2015-07-10|
    CN204456252U|2015-07-08|
    MX356927B|2018-06-19|
    CN204898751U|2015-12-23|
    CA2866030C|2022-01-18|
    IN2014DE02769A|2015-06-26|
    AU2018256641B2|2020-05-28|
    RU2014139023A|2016-04-10|
    US11066807B2|2021-07-20|
    US20180142440A1|2018-05-24|
    CN104514234B|2019-11-01|
    AU2014233614A1|2015-04-16|
    AU2014233614B2|2018-08-02|
    AU2018256641A1|2018-11-22|
    CN104514234A|2015-04-15|
    RU2018127839A|2019-03-14|
    ZA201407006B|2015-10-28|
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    法律状态:
    2016-04-26| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    2018-11-06| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-10-08| B25C| Requirement related to requested transfer of rights|Owner name: HARNISCHFEGER TECHNOLOGIES, INC. (US) Free format text: A FIM DE ATENDER A TRANSFERENCIA REQUERIDA ATRAVES DA PETICAO NO 870190086545 DE03/09/2019, E NECESSARIO:1. APRESENTAR TRADUCAO JURAMENTADA DO DOCUMENTO QUE COMPROVA A TRANSFERENCIASOLICITADA;2. QUE O DOCUMENTO QUE COMPROVA A TRANSFERENCIA SEJA APRESENTADO COM A DEVIDALEGALIZACAO CONSULAR OU ACOMPANHADO DA APOSTILA DE HAIA;3. QUE O CUMPRIMENTO DA PRESENTE EXIGENCIA ESTEJA ACOMPANHADO DA GRU RELATIVO A TALSERVICO. |
    2019-12-24| B25A| Requested transfer of rights approved|Owner name: JOY GLOBAL SURFACE MINING INC (US) |
    2020-05-05| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-03-23| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-05-25| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 26/09/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US201361883982P| true| 2013-09-27|2013-09-27|
    US61/883,982|2013-09-27|
    US201461968030P| true| 2014-03-20|2014-03-20|
    US61/968,030|2014-03-20|
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