• 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:
    A baler is described for forming square bales consisting of several separately bound slices. The baler contains a bale chamber and a number of needles that can move in unison through the bale chamber to pass respective strands of string from one side of the bale chamber to associated button layers on the opposite side of the bale chamber. A first set of permanently operational button layers for tying strands of rope that are tied around individual slices on each occasion that the needles are moved through the bale chamber, a second set of button layers that can be turned off by the movement of a frame 80 that their rope-carrying parts Contains to a position out of reach of the tip of the needles, knots the remaining strands of rope only at the end of forming a full bale.
    公开号:BE1018232A3
    申请号:E2008/0423
    申请日:2008-07-29
    公开日:2010-07-06
    发明作者:
    申请人:Cnh Belgium Nv；
    IPC主号:
    专利说明:

    SQUARE BALL PRESSES FOR FORMING BALES IN PUCKS
    Field of application of the invention
    This invention relates to square balers and more particularly to the mechanism used to tie bales together with pieces of string and to make knots in the rope.
    BACKGROUND OF THE INVENTION
    Balers are machines that can have their own row drive, but are more often towed and driven by a tractor's PTO shaft. There are two main types, namely round web presses and square balers. Round balers are used to produce cylindrical bales that are normally wrapped with a mesh or foil after they have been formed; . This invention applies only to square balers. . ...
    To explain, by way of background, the manner in which square balers and knot mechanisms of the type to which this invention relates are built and operate, reference will be made to the accompanying Figures 1, 2 and 3. The three drawings are derived from and explained more fully in patent US 4,142,746, which is incorporated herein by reference. In these drawings, which are described herein only to the extent necessary to understand this, the following is:
    FIG. 1 is a partial side view of a baler; . FIG. 2 is a schematic view of a full and a partially double-knotted loop; and ... FIG. 3 is an enlarged, partial side view of the button pad, the needle and the associated mechanism in the middle of the cycle.
    The baler 20, partially shown in FIG. 1, has a rectangular bale compartment 22 supported by one or more ground-running running wheels 24. The bale compartment 22 forms a bale chamber 26 that is loaded via a curved conduit 28 approaching compartment 22 from its bottom. A plunger 30 moves back and forth within the bale compartment 22 to compact fresh loads of material from the conduit 28 at the back of chamber 26. When the bale reaches a certain size, a trigger 34 is pulled over by a rod 36 connected to a suitable bale length sensor (not shown) to couple a claw coupling 38. This connects a button layer 40 and a needle 42 to a driving power source via a driving chain 44 connected to the coupling 38 to start the binding operation.
    The needle 42 is mounted on the bale compartment 22 via a pivot point 46 and is pivoted to and fro through the bale chamber 26 by a rod assembly 48 which is set in motion by means of. the coupling 38. The needle 42 has a rest position at the bottom of the bale compartment 22 as shown in FIG. 1 and a fully extended position through bale compartment 22. The tip of needle 42 includes an eye 50 (see FIG. 3) formed between two transversely extending rollers 58,60 through which a string of string is fed.
    FIG. 2 shows the nature of the binding loop produced in this invention. The finished product is of the same nature as the loop 62 which completely wraps around the finished bale. The loop 62 is made of two strands of binder material, namely a first strand 64 extending along the top of the bale and a second strand 66 along the bottom of the bale and its two opposite ends. There are two nodes 68 and 70 in the loop 62 where the strands 64 and 66 meet.
    To the left of the loop 62 in FIG. 2 shows a partial loop 62a that is still in the formation stage. The upper strand 64a comes from a feed unit 72, while the lower strand 66a is supplied by a completely separate, second feed unit 74. At the particular point in the sequence chosen for illustration, node 68a was formed shortly after node 70 was formed, and the bale approximates the length at which needle 42 is ready to come into operation and strands 64a and 66a on node mechanism 40 to form the second node.
    As better shown in FIG. 3, the button pad 40 includes a generally circular element 76 attached to drive shaft 78 to rotate with it over one full revolution when clutch 38 is coupled. The knot mechanism 40 includes a forward-bent frame 80, which is traditionally attached to the top of the bale compartment 22 and additionally supports various other rope-carrying components that are used in making the knots due to the rotation of element 76.
    These rope-carrying parts include a rotating knotter jaw 82 that is supported. by turning the frame 80 around an inclined axis 84, a multi-disc holder 86 is positioned at the rear near the knotter beak 82 to hold strands 64a and 66a in a position so that they can be carried by the knotter beak 82 during rotation of this the latter, and means for releasing the connected strands from the holder 86 in the form of an arm 88 pivoting with respect to frame 80 about a bolt 90. The lower end of the arm 88 is in the form of a fork which yoke 92 whose opening underneath the knotter jaw 82 points away from the holder 86. The yoke 92 carries a cutting tool between the knotter jaw 82 and the holder 86 for cutting the strands 64a, 66a as a result of the swinging movement of the arm 88 in the correct direction. This movement of the arm 88 to operate the cutting tool also serves to grasp the zones in the vicinity of the fork 92 with a knot formed on the knotter jaw 82 to strip that knot off the knotter jaw 82.
    In order to transfer drive power from the element 76 to the knotter jaw 82, the latter is equipped with a gear wheel 96 arranged so that it engages a pair of spaced apart parts of the gear wheel on the element 76. Similarly the drive power is transmitted to the discs 86 of the holder 86 via a worm gear transmission 102 and an angled transmission 104 which is positioned such that it successively engages a pair of circumferentially spaced apart gears on element 76. The ability to pivot the arm 88 around hinge bolt 90 is obtained through a cam follower 110 on the upper end of the arm 88 behind the bolt 90 that is mounted within a cam profile 112 on the element 76. A pair on the circumference at a certain spaced apart cam shoulders in the web are arranged to sequentially engage the follower 110 to drive the latter.
    The type of knot system shown in Figures 2 and 3 and described in U.S. Pat. No. 4,142,746 is known as a double button layer for reasons shown in Figs. 2. In particular, there are two knots present in each loop around a bale, and once a knot 70 is formed to finish a bale, a second knot 68a is formed to tie the strands of rope coming from the feed units 72 and 74 together to start the next bale.
    Once the second node 70 is laid, both strands are released from the node layer and can move freely as the bale gets bigger. A distinction has to be made between this type of button pad and single button pad where one end of a single strand of rope is clamped in the button pad as the bale grows. When the bale is finished, the other end of the strand is inserted into the knot finder by the needle after the rope has been wrapped around the bale, and the previous end gripped by the knot founder is knotted. After being cut off from the knotted bale, the end of the strand remains stuck in the button layer before the start of the next bale. This invention is only applicable to double knots, as described in patent US 4,142,746, for reasons that will be made clear below.
    It is sometimes desirable to form a large bale by binding together several smaller bales, which are further called "slices". If, for example, six ropes are tied around a bale, the second and fifth knots can be operated in such a way that they tie rope around each individual slab and the remaining four knots can be made to knot less often around a complete bale consisting of several slabs. .
    A baler that works in this way is described in patent EP 1,411,759. In this patent, two separately movable groups of needles are provided, each of which can pivot around - at a certain distance from each other - parallel axes or around concentric axes. One group of needles contains two needles used to tie the slices and is put into operation after each slice is formed, and the other group of needles contains the remaining four needles and is put into operation only when a full bale with the required number sticking was formed.
    Prior art balers capable of making bales into which the slices are individually knotted require special needle yokes that are individually raised by the bale chamber. If two separate yokes are used pivotally about parallel axes spaced apart from one another, the needles of the two groups must be of different lengths.
    Object of the invention
    Therefore, the present invention seeks to provide an alternative and simpler construction of a knot system that allows the formation of a bale consisting of a plurality of individually knotted slices without having to change the yoke or the needle assembly.
    Summary of the invention
    According to the present invention, there is provided a baler comprising a bale chamber a number of needles movable through the bale chamber to pass the respective strands of string from one side of the bale chamber to associated knots on the opposite side of the bale chamber, which includes means for move all needles through the bale chamber after finishing each slice, a first set of permanently operational knots for tying strands of rope tied around individual slices on each occasion the needles are moved through the bale chamber, and a second set of knots that are selectively can be switched off by moving a frame of the knot finder containing rope-carrying parts to a position outside the scope of the associated strands of rope, the knots of the second set being made operational so that the strands of rope connected thereto are only at the end of a complete bale to the formation.
    Since all ropes are passed through the bale chamber after completion of each slab and after completion of each bale, no two separate needle assemblies need to be present and all needles can be mounted on a common axis to pivot around the same axis. The strands to be knotted around the slices are knotted after the formation of each slice and their knots are arranged and designed to operate in a conventional manner each time the second strand 66a is introduced into the knots by one of the needles. In the remaining knots, however, the frames carrying the rope-carrying parts are moved to non-operational positions when only one slice is knotted, and they are only moved back to their operational positions after a full bale has been formed. Thus, the baler works with slice-forming cycles in which only some of the strands of rope are knotted to form slices and with bale-forming cycles in which all strands are knotted to tie a complete bale and the last slice of the bale.
    Rotating the frame of the button layer will only ensure that the rope-carrying parts remain out of reach of the strands of rope that are moved to the button layer by the tip of the needle 42, but will not prevent these parts from going through the same movements if they were to tie a knot, be it with a phase different from that of the functioning knots. In this way, since the strands 64a and 66a of the rope are not grabbed by one or more parts that can move with the frame 80, no knot is formed, but means the return of the frame 80 to its normal position at the end of each stick-binding cycle means that the button layer is ready to form a knot at the end of a bale-binding cycle.
    If a strand that is to be used to form a bale is brought to the side of the bale chamber knotger while the knotger is not operational, ie during a needle assembly stick-binding cycle, it will be withdrawn from the bale chamber during the return movement of the needle assembly at the completion of the slice formation cycle, without forming a closed loop around the bale. Provided that the rope is sufficiently tensioned, this will not have an adverse effect on tying the next knot with the same strand during a bale forming cycle of the needle assembly.
    For that reason, it is preferable to guide the second strand of rope so that one of the two sections spread over the tip of the needle passes around a guide near the base of the needle that is movable with the needle and that the other runs around a stationary guide that is near the tip of the needle when the latter is withdrawn from the bale chamber.
    It is important that the strand does not catch on the harvest material when it is moved up and down through the bale chamber, and to assist in this it is desirable to form vertical recesses to accommodate the needles on the front of the plunger that uses to compress the harvest material in the bale chamber.
    Brief description of the drawings
    The invention will now be further described, by way of example, with reference to the accompanying drawings, in which:
    Figures 1 to 3, already described, illustrate a traditional square baler with a double button pad,
    Fig. 4 is a very simplified schematic representation of a button layer in its operational state, similar to that of Fig. 3 but which can be selectively disabled by movement of its frame containing rope-carrying parts,
    Figure 5 is a similar schematic representation of the button layer of Figure 4 when it is not operating, and
    Figures 6 and 7 are schematic representations showing the path followed by the strands of rope when a needle is first raised and then lowered without a knot being laid in the strands.
    Detailed description of the preferred embodiment
    The button layers used to tie a rope around full bales can be selectively turned off during the needle assembly slice cycles and are shown in Figures 4 and 5. The last two figures are very simplified representations of a button layer comparable to those of Figure 3, but differs from that in that the frame member 80 can be rotated about the axis of the axis 78 between an operational position shown in Figure 4 and a non-operational position shown in Figure 5.
    A trigger 34 connected to a mechanical bale length sensor, such as described in U.S. Pat. No. 4,142,746 and shown in Figure 1, is not sufficient to trigger both the tack-binding cycles and the bale-binding cycles. It is possible and preferable to use an electronic sensor to start a stick-binding cycle whenever the bale has, for example, become 50 cm larger, and a bale-binding cycle when it has, for example, become 2 m larger. Alternatively, a mechanical sensor can be used to start a bale-binding cycle and a counter can be used to start a bale-binding cycle, for example, every four slices.
    In a stick-binding cycle, all needles are raised by the bale chamber. The knots with the fixed frame 80 proceed to make knots in the two strands that are only tied around the last slice and prepare the strand for strapping the next slice. However, the frames 80 of the knots that are tied with strands of rope with which finished bales are to be tied, hinged to the position shown in Figure 5 where the rope-carrying parts are placed out of reach of the tip of the needle 42. Because the button layer cannot work that way, no button is formed and the bale is not completed.
    When a bale has reached its full desired size and a bale binding cycle is started, the frames 80 of all the knots are lowered to the operational position shown in Figure 4 and operate in a traditional manner. In addition to the last-formed slab that is tied to the bale separately from the previous knotted slabs, knots are also laid in the strands of rope that run around the entire bale to hold all slabs together.
    Figures 3 and 4 schematically represent a hydraulically operated articulated lever arm 210 for raising and lowering the frame member 80. The arm 210 includes an elbow pivot point 212 and can pivot around a fixed shoulder pivot point 216 under the influence of a hydraulic cylinder 214. It should be understood that the manner in which the frame element 82 ( knobbucker ) is moved between its operational and its non-operational position is not of fundamental importance to the invention and, for example, one can use a system of cables and pulleys instead of the hinged lever arm 210 or an electric motor or a pneumatic cylinder instead of the hydraulic cylinder 214.
    It is important that when the needles 40 are raised during a sticking cycle, the strands of string that are tied around a full bale remain taut. To achieve this objective, in one embodiment of the invention, the strand is guided in the manner shown in Figures 6 and 7. These two figures show a baler with a double-node trailer pulling rope from two separate feed rollers 72,74 via the tensioners 310 and 312. Figure 6 shows the baler when the needles were raised by the bale chamber, but frame 80 of the button layer 40 was moved to its non-operational position so that no button is formed. Figure 7 shows the path of the rope after the needles 40 have been withdrawn from the bale chamber.
    To keep the rope tight at all times, one of the strings of rope extending to the tip of the needle 40 is guided around the foot 240 of the needle, that is, the portion that is spaced from the tip and connected with the yoke of the needle assembly. The other part of the rope is guided around a stationary pulley or guide 242 that is positioned near the tip of the needle 42 when it is in the retracted position shown in Figure 7. When comparing Figures 6 and 7 it can be seen that the length of the two strings of rope extending from the tip to the foot remains substantially constant in all positions of the needle so that the strands remain tense as the needle moves up and down.
    Thus, when the needle 42 is lowered from its position in Figure 6 to that of Figure 7, at the end of a stick-on cycle, no strand is pulled from the feed units 72 and 74, and instead the part extending from the the base 240 of the needle is extended at the same time as when the second part of the rope is pulled from the eye of the needle 42 to its base 240 from the bale compartment. On the other hand, at the end of a bale-binding cycle, the ends of the strands of the two feed units 72 and 74 will be pulled together by the knotter 40 and the hinged movement of the needle 42 will result in rope pulled from feed unit 74.
    In an alternative embodiment of the invention, instead of winding the loop completely around the back of the needles, it was preferred to apply a small roll to the bottom of the needle, in addition to its junction with the yoke. The complete loop of the rope is then guided to the lower part of the needle to make it easier to guide in a traditional manner between the two rollers 58 and 60 to the tip of the needle 42. It is easy to see that the principle of making an extra length of rope is identical to the previously described embodiment.
    In order to ensure that the strands do not get caught on the harvest material while the needles are being moved up and down through the bale chamber, vertical recesses are preferably formed on the front of the plunger 22 which is used to compress the harvest material in the bale chamber to accommodate the needles.
    权利要求:
    Claims (6)
    [1]
    A baler with a bale chamber and a plurality of needles movable through the bale chamber to pass the respective strands of string from one side of the bale chamber to associated knots on the opposite side of the bale chamber, which includes means for passing all needles through the bale chamber. bale chamber after finishing each slice, a first set of permanently operational knots for tying strands of rope tied around individual slices on any occasion that the needles are moved through the bale chamber, and a second set of knots that can be selectively turned off by to move a frame of the knotter containing rope-carrying parts to a position outside the scope of the associated strands of rope, wherein the knots of the second set are made operational in order to complete with the associated strands of rope a complete to tie a bale.
    [2]
    2. Baler as claimed in claim 1, characterized in that the strands of rope are guided such that one of the two parts spread over the tip of the needle passes around a guide in the vicinity of the base of the needle which is movable with the needle and that the other runs around a stationary guide that is near the tip of the needle when the latter is withdrawn from the bale chamber.
    [3]
    3. Baler according to claim 2, characterized in that a roller is arranged in the vicinity of its base and a loop cord is guided to the lower part of the needle.
    [4]
    A baler according to claim 1 or 2, characterized in that vertical recesses are formed on the front of the plunger used to compress the harvest material in the bale chamber to accommodate the needles.
    [5]
    Bale press according to one or more of the preceding claims, characterized in that the frames of the bale-binding button layers that carry the rope-carrying parts of the button layer are pivotable around the axis of a drive shaft of the button layer by means of. a rod work connected to an electric motor, a pneumatic cylinder or a hydraulic cylinder.
    [6]
    A baler according to claim 5, characterized in that the rod work that pivots the frame comprises an articulated arm that is pivotally connected between the frame and a stationary point of the baler.
    类似技术:
    公开号 | 公开日 | 专利标题
    BE1018232A3|2010-07-06|SQUARE BALL PRESSES FOR FORMING BALES IN SLICES.
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    NL2012638B1|2016-07-15|Apparatus and method for forming a round bale with a tensioned pressing means.
    US5479766A|1996-01-02|Baling apparatus and method
    PL158422B1|1992-09-30|Machine for rolling hay and combine harvester straw bales
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    US7152521B2|2006-12-26|Method and device for compressing square bales for stalk material
    BE1018204A3|2010-07-06|IMPROVEMENTS IN SQUARE BALL PRESSES.
    GB2210824A|1989-06-21|Pick-up roll baler
    US5012733A|1991-05-07|Method for binding of round bales of harvested agricultural crops
    CN103635080B|2017-06-27|Agricultural baler with bale packing skewed slot
    BE1023911B1|2017-09-11|BUTTON SYSTEM FOR A BALEN PRESS
    FR2606966A1|1988-05-27|AUTOMATED CYLINDRICAL BALE PRESS
    CA1292146C|1991-11-19|Continuous round baler and method
    DE2749611A1|1979-05-10|Binder for agricultural circular baling presses - has guide moved by feeder driven by thread cut off by cutter at end of binding process
    JP4267973B2|2009-05-27|Roll baler
    DK169739B1|1995-02-13|Device for removing twine from straw bales
    同族专利:
    公开号 | 公开日
    US20090044710A1|2009-02-19|
    US7600470B2|2009-10-13|
    GB0715748D0|2007-09-19|
    EP2025219B1|2012-06-27|
    GB2451826A|2009-02-18|
    EP2025219A1|2009-02-18|
    引用文献:
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    EP0429798A1|1989-12-01|1991-06-05|Josef Freihart|Large bales, especially of hay or straw|
    DE19520751A1|1995-06-07|1996-12-12|Werner Frammersberger|Small baler for big fodder|
    US20060230950A1|2002-02-27|2006-10-19|Josef Freihart|Method and device for compressing square bales for stalk material|
    DE202004006991U1|2004-05-03|2005-06-23|Welger Maschinenfabrik Gmbh|Baling twine tying unit for baling press, comprising individually activated tying disks|
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    US20110023436A1|2009-07-31|2011-02-03|Agco Corporation|Baler Tongue for Collecting Biomass|
    US20110023440A1|2009-07-31|2011-02-03|Agco Corporation|Method For Projecting Biomass From A Combine Harvester|
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    US8490375B2|2009-07-31|2013-07-23|Agco Corporation|Baler collector for collecting biomass from a combine harvester|
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    CN102665387B|2009-11-03|2016-02-24|腊斯佩系统技术有限两合公司|Double-knot twine knotter unit|
    EP2564686B1|2011-09-01|2014-05-07|Usines CLAAS France S.A.S.|Bale press|
    TR201808072T4|2012-06-14|2018-07-23|Rasspe Systemtechnik GmbH|Twine knotting mechanism.|
    BE1021117B1|2012-10-16|2015-11-16|Cnh Industrial Belgium Nv|IMPROVED KNOB SYSTEM FOR A BALEN PRESS|
    US20220071099A1|2018-12-21|2022-03-10|Agco Corporation|Quick-release lock for baler knotter head|
    法律状态:
    2014-01-31| RE| Patent lapsed|Effective date: 20130731 |
    优先权:
    申请号 | 申请日 | 专利标题
    GB0715748A|GB2451826A|2007-08-14|2007-08-14|Square Baler for forming sliced bales|
    GB0715748|2007-08-14|
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