Brake apparatus for elevator

专利摘要:
PURPOSE: An elevator brake system is provided to carry out the braking of an elevator car smoothly by operating brake pads by hydraulic force generated by a hydraulic force generating part in response to the rotation force of a clutch part to be driven by the falling down of the elevator car, thereby protecting passengers safely. CONSTITUTION: An elevator brake system includes racks(4) and rails(6) vertically provided in the shaft of an elevator car(1), a clutch part(12) for connecting a driving shaft to a driven shaft when pinions(11) rotate at a high speed due to the falling down of the elevator car, a gear part(13) formed at a side of the clutch part for transmitting rotation force of the clutch part to a hydraulic force generating part, and hydraulic cylinders(17) mounted at both sides of the rails for making brake pedals(16) contact the rails by the hydraulic force of the hydraulic force generating part to stop the elevator car.
公开号:KR20010096316A
申请号:KR1020000020394
申请日:2000-04-18
公开日:2001-11-07
发明作者:김종면；김종순；홍채민；김종수；강신준
申请人:홍채민；주식회사 이성건설기계；조순문；한국산업안전공단；
IPC主号:

专利说明:

Brake apparatus for elevators
[38] The present invention relates to a brake device for an elevator, and more particularly, when a construction site elevator or a building elevator falls, so that hydraulic pressure is generated and the brake pad is operated by the hydraulic pressure so that the elevator is braked, thereby causing the fall of the elevator to fall. A brake device for an elevator that is to be prevented.
[39] In general, elevators in a construction site are provided to be elevated along a block assembled in multiple stages. Such an elevator 1 is provided with a rail roller 1a which is moved along the rail 6 of the block 5 as shown in FIGS. The rail roller 1a is provided with a pair of upper and lower sides, and an upper rail roller and a lower rail roller are disposed in front and rear of the rail 6, respectively, so that the elevator 1 does not flow forward and backward. Guide the lift to the lower side only. And the elevator (1) is provided with a ring (1b) to prevent the elevator to roll over along the rail (6) is provided with a drive motor (2) and pinion (2a) inside the elevator (1) and the block (5) ) Is provided with a rack (4) and when the motor (2) is rotated forward and backward, the pinion (2a) is rotated along the rack (4) is configured to lift the elevator.
[40] However, special attention must be paid to safety as the lift is exposed to the outside. Among them, the brake device is very important, and most brake devices are those using a governor (3). The brake device using the governor uses the principle of centrifugal force, and the pinion of the governor for the brake device is driven to the rack (4) formed in the block and is configured to be connected to the pinion.
[41] If the pinion of the governor attached to the elevator rotates at a high speed by the rack when the elevator falls, the centrifugal extension is extended and the pinion is stopped by the projection inside the brake device, and the elevator is automatically braked.
[42] However, as the elevator 1 is lifted by the rack 4 and the pinion 2a, the more the elevator is used, the more the fatigue accumulates in the rack and the pinion and the mechanical properties become weak. When the elevator suddenly falls due to an accident, the governor (3) stops the elevator. At this time, the rack, which is vulnerable to fatigue, is severely impacted and the teeth of the rack or the teeth of the piston, which is a component of the governor, are damaged. There is an accident that the elevator falls. During normal operation, the elevator stops slowly and starts slowly under the control of the motor (2) .Therefore, there is little impact on people or cargo in the elevator, so that it is not injured by the shock. When stopping, there was a problem that the impact of the impact corresponding to the fall affects passengers or cargoes, resulting in injury or damage.
[43] In addition, the building elevator is configured to be elevated in a rope manner, but this also has a problem of damage to passengers and cargoes due to a big shock in the way the elevator is suddenly stopped because of the brake device is configured by the governor method.
[44] The present invention has been developed in view of the conventional problems, the object of the present invention is to detect the fall of the elevator or building elevator in the construction site so that the hydraulic pressure is generated and the brake pad is operated by the generated hydraulic pressure brake It is possible to provide a brake apparatus for an elevator in which a constant braking distance is maintained to alleviate an impact caused by sudden braking and to prevent breakage of the brake apparatus due to an impact caused by sudden braking.
[1] 1 is a perspective view of a general elevator
[2] Figure 2 is a side view of a conventional construction site lift
[3] 3 is a plan view of a conventional construction site lift
[4] Figure 4 is a side view of a construction site elevator equipped with the invention brake device
[5] 5 is a plan view of the brake device of the present invention;
[6] Figure 6 is a cross-sectional view showing a clutch portion of the brake device of the present invention
[7] Figure 7a, b is a side cross-sectional view showing a clutch portion of the brake device of the present invention
[8] 8 is a plan view showing another embodiment of the brake device of the present invention;
[9] Figure 9 is a plan view of a building elevator equipped with a brake device according to the present invention
[10] <Code Description of Main Parts of Drawing>
[11] 1,1a: elevator
[12] 1b: Lift passage
[13] 2: reduction motor
[14] 2a: pinion
[15] 3: governor
[16] 4: rack
[17] 5: block
[18] 6: rail
[19] 10: brake body
[20] 11: pinion
[21] 12: clutch part
[22] 13: gear part
[23] 14: Cam
[24] 15: oil pressure generating part
[25] 16: hydraulic line
[26] 17: hydraulic cylinder
[27] 18: brake pad
[28] 19: drive shaft
[29] 20: driven shaft
[30] 21: balance weight
[31] 22 weight
[32] 23: control lever
[33] 24: adjustment spring
[34] 25: leaf spring
[35] 26: stopper
[36] 27: clutch ring
[37] 28: turning
[45] In order to achieve the above object, the present invention is a rack and a rail are vertically provided on the passage in which the elevator is moved, and the drive shaft and the driven shaft are connected to each other when the pinion is rotated at a high speed by falling of the elevator. The clutch unit is provided, and the gear unit is configured to transmit the rotational force of the clutch unit to the hydraulic generator, and both sides of the rail are provided with hydraulic cylinders that allow the brake pad to be in close contact with the rail by hydraulic pressure from the hydraulic generator. Consists of.
[46] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[47] Figure 4 is a side view of a construction site elevator with a brake device of the present invention, Figure 5 is a plan view of the brake device of the present invention. The elevator is provided with blocks 5 which are prefabricated. The block 5 is provided with rails 6 in all directions and is configured such that the rails 6 are supported by angles intersected zigzag. And the elevator 1 is provided on one side of the stacked block (5). This elevator (1) is provided with a rack (4) successive to the elevator to one side of the block (5) so as to move along the block and the elevator (1) while moving along the rack (4) to lift the elevator (1) Pinions 2a are provided respectively.
[48] The pinion 2a is provided to be driven by the reduction motor 2 and at least two are provided to form a pair. And it is provided with a governor (3) which is operated in an emergency such as a fall. The governor 3 has a weight built in, and when the weight is opened by centrifugal force, the governor is operated to brake the elevator. In addition, the elevator body 1 is provided with the brake body 10 of the present invention. The brake body 10 includes a clutch unit 12, a gear unit 13, an oil pressure generating unit 15, and a brake pad 18.
[49] The clutch portion 12 is provided with a pinion 11 engaged with the rack 4, and the gear portion 13 is composed of a combination of a bevel gear and a spur gear. In addition, the oil pressure generating portion 15 and the gear portion 13 are connected to the cam 14, and the oil pressure is generated in the oil pressure generating portion 15 when the cam 14 is rotated. The hydraulic pressure is sent to the hydraulic cylinder 17 by the hydraulic line 16, and the brake pad 18 is operated by the hydraulic cylinder 17. The brake pads 18 are provided in contact with the outer circumferential surface of the rail 6 formed in the block 5, and the hydraulic cylinder 17 and the brake pads 18 are provided in pairs.
[50] According to the present invention, when the rotational force of the pinion 11 is transmitted to the hydraulic pressure generating portion 15 through the clutch portion 12 and the gear portion 13, the hydraulic pressure is generated in the hydraulic pressure generating portion 15 and is applied to the hydraulic cylinder 17. The brake pad 18 is operated by this. Accordingly, as the brake pad 18 comes into contact with the rail 6, a braking force is generated by friction, and the elevator 1 is gradually stopped.
[51] Figure 6 is a cross-sectional view showing a clutch portion of the brake device of the present invention, Figure 7a, b is a side cross-sectional view showing a clutch portion of the brake device of the present invention. The clutch unit 12 is embedded in the brake body 10 and includes a drive shaft 19 connected to the pinion 11 and a driven shaft 20 provided on the same axis as the drive shaft 19. The driven shaft 20 is provided with a bearing 20a for supporting the tip of the drive shaft 19, and the clutch ring 27 is provided at the outer circumference of the bearing 20a. The inner circumferential surface of the clutch ring 27 is provided with a plurality of projections 28 radially, and the drive shaft 19 is provided with a balance weight 21 lying on the inner circumference of the clutch ring 27.
[52] The balance weight 21 is provided with a weight 22 which is restrained by the adjustment spring 24 and the control lever 23 and the weight 22 is placed in a stationary state until a constant centrifugal force is reached. And the balance weight 21 is provided with a leaf spring 25 and the stopper 26 for fixing the position of the weight (22). When the weight 22 is lifted out of the balance weight 21 by centrifugal force, the weight 22 touches the stopper 26 of the leaf spring 25 and does not return to its original position.
[53] According to the present invention configured as described above, only the pinion 11 and the drive shaft 19 of the clutch unit 12 are rotated while the elevator 1 is normally elevated. When the elevator is normally lifted, the pinion 11 is rotated while being lifted along the rack 4, and even though the rotational force generated at this time is transmitted to the drive shaft 19, since the centrifugal force due to the rotation is not large, it is formed on the outer circumferential surface of the drive shaft 19. The weight 22 is not lifted and placed in a restrained state by the adjustment lever 23. Therefore, the weight 22 is rotated together with the drive shaft 19 without departing from the balance weight 21, and the driven shaft 20 maintains the stop state.
[54] The brake device of the present invention is operated when the pinion 2a, the governor 3, etc., which elevate the elevator 1, are damaged and the elevator falls naturally. The elevator 1 has a natural fall surface acceleration, and the rotation speed of the pinion 11 of the brake body is increased. When the pinion 11 is rotated at a constant speed or more, a strong centrifugal force is applied to the weight 22 and is out of the support weight of the control lever 23 to be out of the balance weight 21. As shown in FIG. 7B, the weight 22 that has once been removed is caught by the stopper 26 of the leaf spring 25 and is not arbitrarily returned, and the projection 28 of the clutch ring 27 is caught by the opened weight 22. The drive shaft 19 and the driven shaft 20 are rotated together in an integrated state.
[55] When the rotational force of the drive shaft 19 is transmitted to the driven shaft 20 as described above, oil pressure is generated in the hydraulic generator 15 through the gear unit 13 and the cam 14 as shown in FIG. 5. The hydraulic pressure is transferred to each hydraulic cylinder 17 by the hydraulic line 16, and the brake pad 18 of the hydraulic cylinder 17 is operated to rub against the rail 4 of the block 5. The elevator 1 is slowly braked and finally stopped while friction takes place. The braking distance is a function of the coefficient of friction between the brake pads 18 and the rails 4, the hydraulic force of the hydraulic cylinder 17, the weight of the elevator, and the speed of falling of the elevator, so that the passengers are less impacted when braking the elevator. The friction coefficient, the hydraulic force of the hydraulic cylinder 17 and the falling speed of the elevator (controllable by the release speed of the clutch) can be adjusted.
[56] FIG. 8 is a plan view showing another embodiment of the brake device according to the present invention, in which the position of the rail 6 which the brake pad 18 is in contact with may be varied. After the rails 6 are formed at both sides of the center of the block 5, the hydraulic cylinders 17 and the brake pads 18 are provided at both sides of the rails 6, and the brake pads 18 and the rails 6 are provided. The cross section can be configured in various ways such as circular, square, rhombus.
[57] 9 is a plan view of a building elevator equipped with the brake device of the present invention, in which the brake body 10 of the present invention is provided inside the elevator 1a, and the pinion 11 of the brake body 10 is placed in the elevator passage 1b. It is configured to engage with the formed rack (4). The brake pads 18 and the hydraulic cylinders 17 are provided on the rails 6 protruding toward both centers of the elevator passage 1b, respectively.
[58] The building elevator brake device of the present invention configured as described above has the same configuration as the brake device of the construction site of the present invention. When the building elevator 1a falls, the pinion 11 is rotated at a high speed. At this time, the weight is connected to the pinion, and the driving shaft and the driven shaft are connected, and hydraulic pressure is generated from the hydraulic generator through the gear part and the cam. The hydraulic cylinder 17 is operated by the generated hydraulic pressure, and the building elevator 1a is braked by the brake pad 18 thereof.
[59] As described above, according to the present invention, the clutch unit, the gear unit, the hydraulic generator, and the like are provided inside the elevator for use in the building and the construction site. Therefore, when the elevator falls, the clutch unit is operated so that its rotational force is transmitted to the oil pressure generating unit via the gear unit. When hydraulic pressure is generated in the oil pressure generating unit, the brake pad is operated by the hydraulic force and the elevator is gradually braked, so that the shock applied to the passenger is alleviated, thereby protecting the passenger safely.
[60] In addition, it stops the elevator by the friction force, and when it stops, it gives less impact to people and cargo in the elevator. Since the brake pad is used, it can prevent falling due to the damage of the rack and pinion.

权利要求:
Claims (3)
[1" claim-type="Currently amended] The rack 4 and the rail 6 are provided in the vertical direction on the passage where the elevator 1 is moved,
When the pinion 11, which is rotated in engagement with the rack 4, is rotated at a high speed due to the fall of the elevator 1, a clutch 12 is provided to connect the drive shaft 19 and the driven shaft 20 to each other.
Gear portion 13 for transmitting the rotational force of the clutch portion 12 to the oil pressure generating portion 15 is provided, the brake pad 18 by the oil pressure from the oil pressure generating portion 15 on both sides of the rail (6) The brake device for an elevator, characterized in that the hydraulic cylinder (17) is provided to be in close contact with the rail (6) to brake the elevator.
[2" claim-type="Currently amended] 2. The clutch unit 12 is provided with a drive shaft 19 having a pinion 11, a driven shaft 20 supporting the tip of the drive shaft 19, and the drive shaft 19 has a weight ( A balance weight 21 having 22) is provided,
The driven shaft 20 is provided with a clutch ring 27 surrounding the balance weight 21. The inner circumferential surface of the clutch ring 27 is hung by a weight weight 22 that is caused by centrifugal force and the drive shaft 19 and the driven shaft 20. Elevator brake device, characterized in that provided with a plurality of projections (28) for connecting.
[3" claim-type="Currently amended] According to claim 2, wherein the balance lever 21 is provided with an adjustment lever 23 for holding the weight 22 and the rear end of the control lever is provided with an adjustment spring 24 for controlling the centrifugal force of the weight, Elevator brake device, characterized in that the leaf spring (25) having a stopper (26) is provided on one side of the balance weight (21) so that when the weight (22) is opened.

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
2000-04-18|Application filed by 홍채민, 주식회사 이성건설기계, 조순문, 한국산업안전공단

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2000-04-18|Priority to KR1020000020394A

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2000-04-18|Priority claimed from KR1020000020394A

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2001-11-07|Publication of KR20010096316A

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2002-09-28|Application granted

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2002-09-28|Publication of KR100354380B1

优先权:

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申请号 | 申请日 | 专利标题

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KR1020000020394A|KR100354380B1|2000-04-18|Brake apparatus for elevator|