JP4429764B2 - Roll baler - Google Patents

Description

  The present invention relates to a roll baler that collects materials such as grass and rice straw scattered in a field to form a roll bale.

  The roll baler includes a pick-up device for picking up materials (harvested material) such as grass and rice straw scattered in the field, and a transport device (transport conveyor) for transporting the material picked up by the pick-up device to the bale molding room. ing. In such a roll baler, when picking up the material, the pick-up device is lowered to pick up the material so as to be close to the field, and when not working such as going over the field or entering / leaving the field, the pick-up device is avoided. In addition, it is necessary to raise the pickup device to a higher position than at the time of work. Therefore, in the conventional roll baler, there are those in which the pickup device moves up and down integrally with the conveying device as in Patent Documents 1 and 2, and those in which only the pickup device moves up and down as in Patent Documents 3 and 4.

Japanese Utility Model Publication No. 61-150438 Japanese Utility Model Publication No. 4-20183 Japanese Utility Model Publication No. 5-76245 Japanese Utility Model Publication No. 4-20185

  However, in the conventional roll baler, the lift height of the pickup device may not be obtained sufficiently. For example, the pick-up device may interfere with traveling when collecting rice straw in a paddy field, crossing a straw at the time of collecting grass on a paddy field, or when entering or leaving a field with a large step difference from the road.

  Accordingly, an object of the present invention is to provide a roll baler capable of preventing damage to the pickup device by ensuring a sufficient height of the pickup device.

  In order to achieve the above object, the invention of claim 1 is a roll baler that forms a roll bale by collecting materials such as grass and rice straw scattered in a field, and is provided on a body frame so as to be pivotable up and down. A pickup device provided at the front end of the transfer device so as to freely swing up and down, a movable means for rotating the transfer device up and down, and in conjunction with the up-and-down rotation of the transfer device, the pickup device It is a roll baler characterized by including a swing link mechanism that swings the head up and down.

  According to a second aspect of the present invention, in the swing link mechanism, one end of the swing link mechanism is rotatably connected to the vehicle body frame, and a swing support shaft at the other end is rotatably connected to the pickup device. Is rotatably connected to the vehicle body frame, the other end is rotatably connected to the pickup device, and is provided so as to intersect the transport device. The roll baler according to claim 1, further comprising a driven swing bar that swings and rotates about a swing support shaft.

  The invention of claim 3 is the roll baler according to claim 1 or 2, further comprising lower limit height adjusting means for adjusting the lower limit height of the pickup device.

  ADVANTAGE OF THE INVENTION According to this invention, there exists an outstanding effect that damage of a pick-up apparatus can be aimed at by fully ensuring the raising height of a pick-up apparatus.

  A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a side view of a roll baler according to an embodiment of the present invention. FIG. 2 is a plan view of the pickup device and the transport device. FIG. 3 is a partial side view of the roll baler showing a state where the conveying device and the pickup device are raised. FIG. 4 is a schematic view of the swing link mechanism.

  As shown in FIG. 1, the roll baler of this Embodiment is a self-propelled roll baler (self-propelled roll baler) provided with the crawler type traveling device A. A body frame 10 for mounting the operating device B and the roll baler body C is provided on the upper part of the traveling device A. The operating device B is for operating the traveling device A and the roll baler body C.

  The roll baler body C includes a bale forming device D, a transport device E, a pickup device F, and a swing link mechanism G. The bale forming apparatus D includes a bale forming chamber 13 including a plurality of rollers 11 and left and right side plates 12 arranged in an annular shape. The side plate 12 of the bale molding chamber 13 is attached to a front column 14 and a rear column 15 fixed to the vehicle body frame 10. The front column 14 and the rear column 15 are connected by a horizontal rail 16. The front column 14, the rear column 15, and the horizontal rail 16 are provided on both the left and right sides of the vehicle body frame 10.

  An intake port 17 is provided in front of the bale molding chamber 13. A material (harvested material) such as grass or rice straw is taken into the bale forming chamber 13 from the intake port 17 and formed into a cylindrical roll bale R. The formed roll bale R is packaged by a bundling device or a net winding device (not shown) and then released to a farm field or the like. The roll bale R is released by opening the gate 18 constituting the latter half of the bale molding chamber 13. The gate 18 is opened by extending a hydraulic cylinder 19 having one end attached to the rear column 15 and the other end attached to the side plate 12 of the bale molding chamber 13.

  In front of the bale forming apparatus D, a conveying apparatus E for conveying the material picked up by the pickup apparatus F to the bale forming apparatus D is provided so as to be rotatable in the vertical direction. The conveying device E is rotated in the vertical direction around the conveyor drive shafts 23 and 24 provided on the side plate 12 of the bale molding chamber 13 as the rotation center.

  As shown in FIG. 2, the conveying device E includes left and right conveyor drive shafts 23 and 24 that are rotatably supported by bearings 21 and 22 on the side plate 12 of the bale molding chamber 13, and left and right conveyor drive shafts 23. , 24 is provided with a conveyor drive roller 26 composed of a cylinder 25 fixed between the two. One ends of left and right conveyor frames 27 are attached to the conveyor drive shafts 23 and 24 of the conveyor drive roller 26 via bearings 28 and 29. A slide frame 30 is slidably attached along the conveyor frame 27 by an adjuster 31 to the other ends of the left and right conveyor frames 27. Between the left and right conveyor frames 27, horizontal rails (not shown) are appropriately attached to ensure rigidity.

  A pick-up drive shaft 33 is rotatably supported on the slide frame 30 via a bearing 32. A conveyor driven roller 35 is rotatably supported on the pickup drive shaft 33 via a bearing 34. A conveyor belt 36 is wound between the cylinder 25 of the conveyor driving roller 26 and the conveyor driven roller 35. The tension of the conveyor belt 36 is adjusted by changing the distance between the cylinder 25 of the conveyor driving roller 26 and the conveyor driven roller 35 by sliding the slide frame 30 with the adjuster 31. Although not shown, V-shaped protrusions are formed inside the conveyor belt 36. A V-shaped groove is provided on the outer periphery of the cylinder 25 of the conveyor driving roller 26 and the conveyor driven roller 35. By engaging the V-shaped protrusion of the conveyor belt 36 with the cylinder 25 of the conveyor driving roller 26 and the V-shaped groove of the conveyor driven roller 35, the meandering of the conveyor belt 36 is prevented.

  In front of the conveying device E, a pickup device F for picking up materials such as grass and rice straw scattered in the field is provided so as to freely swing in the vertical direction. The pickup device F is swung in the vertical direction with a swing support shaft provided at the front end of the transport device E as a rotation center. In the present embodiment, the pickup drive shaft 33 of the transport device E is used as a swing support shaft. A U-shaped bracket 41 is attached to the slide frame 30 of the transport device E. The bracket 41 is provided with left and right pickup frames 43 so as to be rotatable in the vertical direction via a bearing 42.

  A pickup driven shaft 44 is rotatably supported at the front end of the pickup frame 43 via a bearing 45. Many tines 40 for picking up the material are attached to the pickup driven shaft 44.

  A large number of presser bars 53 are attached to the front portion of the pickup device F so as to be able to rotate in the vertical direction to press the picked-up material by its own weight. The length of the presser bar 53 is such that when the pickup device F is lowered, the end of the presser bar 53 is a position where the material is transferred from the pickup device F to the transfer device E. It is set to be positioned above.

  Sprockets 46, 47, and 48 are attached to the conveyor drive shaft 24 and the pickup drive shaft 33 of the conveyor drive roller 26 of the transport device E and the pickup driven shaft 44 of the pickup device F, respectively. A chain 49 is spanned between the sprocket 46 of the conveyor drive shaft 24 and the sprocket 47 of the pickup drive shaft 33. A chain 50 is stretched between the sprocket 47 of the pickup drive shaft 33 and the sprocket 48 of the pickup driven shaft 44. When the conveyor drive shaft 24 (23) is rotated by a drive means (not shown) spanned by the conveyor drive sprocket 51 and the chain 52 of the conveyor drive shaft 24, the pickup drive shaft 33 and the pickup driven shaft 44 are rotated. Thereby, the conveyor belt 36 of the conveying apparatus E and the tine 40 of the pickup apparatus F are rotated.

  The roll baler according to the present embodiment includes a rotating means H for rotating the conveying device E in the vertical direction and a movable means I for operating the rotating device H to rotate the conveying device E in the vertical direction. I have.

  As shown in FIG. 1, the rotating means H of the present embodiment includes a lift arm 62 and a lift bar 66. The lift arm 62 is rotatably attached to the upper end of the front column 14. The lift arm 62 includes an arm 63 attached to the front column 14 and an auxiliary arm 65 fixed to a substantially middle portion of the arm 63 via a connecting rod 64. One end of a lift bar 66 is rotatably attached to the tip of the arm 63. The other end of the lift bar 66 is rotatably attached to the transport device E. The lift arm 62 and the lift bar 66 are provided on both the left and right sides of the vehicle body frame 10, respectively.

  In the present embodiment, the attachment position of the lift bar 66 to the transport device E is set to the front position from the middle in the longitudinal direction of the transport device E. By attaching the lift bar 66 to a position (on the pickup device F side) away from the pickup drive shafts 23 and 24 that is the rotation center of the transfer device E, the transfer device E can be rotated with a smaller force.

  In the present embodiment, by lifting the lift arm 62 and the lift bar 66 upward by the movable means I, the transport device E is rotated about the conveyor drive shafts 23 and 24 as rotation centers.

  The movable means I of the present embodiment is a hydraulic cylinder 67 having one end rotatably connected to the auxiliary arm 65 of the lift arm 62 and the other end rotatably connected to the front column 14. The hydraulic cylinders 67 may be provided on both the left and right sides of the vehicle body frame 10. If the rigidity of the lift arm 62 and the lift bar 66 is sufficiently ensured, the hydraulic cylinders 67 are provided only on either the left or right side of the vehicle body frame 10. May be.

  As described above, the roll baler according to the present embodiment is characterized in that a pickup device F is provided at the front end of the conveyance device E that rotates in the vertical direction so as to freely swing in the vertical direction, and the conveyance device E, the pickup device F, Are connected by a swing link mechanism G. By this swing link mechanism G, the pickup device F is swung in conjunction with the rotation of the transport device E. Hereinafter, the swing link mechanism G will be described.

  The swing link mechanism G of the present embodiment includes a transport device E and a driven swing bar 61 that swings and rotates the pickup device F by the rotation of the transport device E. One end of the driven swing bar 61 of the present embodiment is rotatably connected to an arm 71 provided integrally with the pickup frame 43 of the pickup device F, and the other end is freely rotatable to the lower end of the front column 14. It is a slide bar that is connected so as to intersect with the conveying device E when viewed from the side. The slide bar 61 is rotated in the vertical direction about a support shaft 68 provided on the front column 14 as a rotation center. In the present embodiment, the arm 71 is disposed so as to protrude above the pickup device F, so that the transport device E and the slide bar 61 intersect each other when viewed from the lateral direction. Further, in the present embodiment, the slide bar 61 is provided on each of the left and right sides of the body frame 10.

  The slide bar 61 of this embodiment includes a rod 61a and a cylinder 61b. In the slide bar 61, the longest state in which the stopper of the rod 61a abuts on the boss provided at the tip of the cylinder 61b and the nut for positioning the yoke provided at the tip of the rod 61a abuts on the boss of the cylinder 61b. It is structured to slide freely between the shortest states. The slide bar 61 is normally maintained in the longest state due to the weight of the pickup device F. The maximum extension length of the slide bar 61 is changed by moving the nut provided at the tip of the rod 61a to the yoke side or the cylinder 61b side of the rod 61a. Thereby, since the downward rotation limit of the pickup device F is changed, the height of the pickup device F can be adjusted.

  A tension spring 72 is attached between the arm 71 of the pickup device F and the cylinder 61 b of the slide bar 61. The tension spring 72 urges the pickup device F in the upward direction (clockwise in FIG. 1). When the tine 40 of the pickup device F comes into contact with the unevenness of the field, the slide bar 61 is retracted. Thus, the pickup device F is helped to rise (float). By doing in this way, followability with respect to the unevenness of the field is good, and damage to the pickup device F (in particular, the tine 40) can be prevented.

  The operation of the swing link mechanism G will be described with reference to FIG. In FIG. 4, the conveying device E and the slide bar 61 are shown in a simplified manner. Further, the pickup device F is shown in a simplified manner by only the pickup frame 43 and the arm 71. T indicated by a one-dot chain line indicates a rotation locus of the tip of the tine 40 of the pickup device F.

  The rotation trajectory at the tip of the transport device E is represented by L1. Further, the turning locus of the tip of the slide bar 61 is represented by L2. As described above, since the slide bar 61 and the transport device E intersect each other, the tip of the slide bar 61 is located above the intersection of the rotation locus L1 of the transport device E and the rotation locus L2 of the slide bar 61. Rotate backward from the tip of the transfer device E. Therefore, when the transport device E rotates upward as indicated by the arrow Y1, the slide bar 61 pulls the arm 71 of the pickup device F backward from the front end of the transport device E. In this case, as shown by the two-dot chain line, the pickup device F is swung upward as shown by an arrow Y2 around the swing support shaft (pickup drive shaft 33) of the transport device E.

  When raising the conveying device E and the pickup device F, a raising switch (not shown) provided on the operating device B is pushed. Then, the electromagnetic valve of the hydraulic circuit is activated to bring the spool to a position for sending pressure oil. The pressure oil is sent to the hydraulic cylinder 67, and as shown in FIG. 3, the hydraulic cylinder 67 extends and pushes the lift arm 62 upward. As a result, the transfer device E is lifted by the lift bar 66 and is rotated upward to be raised. Further, in conjunction with the rotation of the conveying device E, the pickup device F is pulled backward by the slide bar 61 and is swung upward to rise. At this time, since the slide bar 61 is pulled downward by the weight of the pickup device F, the slide bar 61 remains at its maximum extension.

  When the hand is released from the raising switch, the energization to the electromagnetic valve is stopped and the spool is returned to the neutral position. As a result, the hydraulic circuit is closed, and the transfer device E and the pickup device F are stopped and held at arbitrary positions.

  When lowering the conveying device E and the pickup device F, a lowering switch (not shown) provided in the operating device B is pushed. Then, the spool of the electromagnetic valve is switched to the hydraulic circuit side connected to the oil tank, and the pressure oil in the hydraulic cylinder 67 is released. When the pressure oil in the hydraulic cylinder 67 is released, the hydraulic cylinder 67 is retracted by the weights of the conveying device E and the pickup device F, and the conveying device E is rotated downward and lowered. Further, in conjunction with the rotation of the conveying device E, the pickup device F is swung downward and lowered, contrary to when it is raised. When the hand is released from the lowering switch, the energization of the electromagnetic valve is stopped, the spool is returned to the neutral position, and the lowering of the conveying device E and the pickup device F is stopped.

  As described above, in the roll baler according to the present embodiment, the pickup device F is rotatably provided at the front end of the transfer device E that is rotated by the movable means I (hydraulic cylinder 67), and the transfer device E and the pickup device F are connected to the neck. It is connected by the swing link mechanism G. As a result, the pickup device F can be swung in conjunction with the rotation of the transport device E, and the pickup device F and the transport device E can be integrated or the pickup device F can be lifted rather than being raised alone. Can be raised sufficiently high. By doing in this way, the pick-up apparatus F does not interfere with the crossing over the field and entering / exiting the field.

  Further, the raising and lowering of the pickup device F is interlocked with the raising and lowering of the conveying device E by the swing link mechanism G. Therefore, it is not necessary to separately provide a movable means in the pickup device F. By doing so, the cost can be reduced and the structure is not complicated. Moreover, since the raising / lowering operation of the conveying apparatus E and the pick-up apparatus F can be performed simultaneously, operation becomes easy compared with operating the conveying apparatus E and the pick-up apparatus F separately.

  Note that the material picked up by the pickup device F may stagnate in the vicinity of the upper portion of the pickup drive shaft 33 of the transfer device E, which is a delivery position with the transfer device E. In such a case, it is preferable to slightly raise the transport device E and swing the interlocking pickup device F upward. In this way, the end of the presser bar 53 of the pickup device F is moved to the rear of the pickup drive shaft 33 of the transport device E and presses on the conveyor belt 36 (see FIG. 3). Thereby, since the conveyance force of the conveying apparatus E improves, the stagnation of material can be eliminated.

  By the way, in this embodiment, as long as the raising switch or the lowering switch is continuously pressed, the raising or lowering of the conveying device E and the pickup device F is continued. Further, in the present embodiment, a holding circuit (not shown) that holds the energization of the electromagnetic valve is provided. In a state in which the switch of the holding circuit is turned on, energization to the electromagnetic valve is held even if the hand is released from the lowering switch. Thereby, the lowering of the conveying device E and the pickup device F is continued.

  Further, the roll baler of the present embodiment is provided with a lower limit height adjusting means J for adjusting the lower limit height of the pickup device F. This will be described with reference to FIGS.

  5 to 7 are partial side sectional views of the roll baler. 5 to 7 show the right side surface of the roll baler. That is, FIG. 5 to FIG. 7 show the side surface opposite to FIG.

  As shown in FIG. 5, the lower limit height adjusting means J of the present embodiment includes a switch 77 for cutting off the energization of the electromagnetic valve. The switch 77 is attached to a flange 76 that is rotatably provided on a support shaft 75 that is fixed to the pickup device F. The tip 77 a of the switch 77 is disposed so as to face the support shaft 75. The flange 76 is pulled counterclockwise in the drawing by a wire 78 and is urged clockwise by a spring 79 in the drawing. By the balance between the tension of the wire 78 and the bias of the spring 79, the flange 76 and the switch 77 are held at a predetermined phase (rotation position).

  A flange 81 provided with a cam-like protrusion 80 is rotatably provided on the support shaft 75 of the pickup device F. The flange 81 is disposed so as to protrude downward. The flange 81 and the transfer device E are connected by a rod 82.

  When the transport device E and the pickup device F are lowered, the rod 82 acts as a link as the pickup device F swings, and rotates the flange 81 counterclockwise in the drawing. As shown in FIG. 6, when the cam-like protrusion 80 of the flange 81 contacts the tip 77a of the switch 77, the energization to the electromagnetic valve is cut off, the spool returns to the neutral position, and the conveying device E and the pickup device F The descent of is stopped.

  The descent stop position at this time is the lower limit height of the pickup device F. Adjustment of the lower limit height of the pickup device F is performed by changing the phase (rotational position) of the switch 77.

  When the wire 78 is pulled by a lever (not shown) provided in the operating device B, the switch 77 is rotated counterclockwise in the drawing. In this case, a gap is generated between the tip 77a of the switch 77 and the cam-like protrusion 80 of the flange 81 as shown in FIG. As a result, the pickup device F can be further lowered from the state shown in FIG. In this way, the lower limit height of the pickup device F can be adjusted low. Further, when the lower limit height of the pickup device F is adjusted to be high, it is only necessary to release the tension of the wire 78 and move the switch 77 to an arbitrary phase (rotation position) by urging the tension spring 79.

  As described above, in the present embodiment, the lowering of the pickup device F is stopped by changing the phase (rotational position) of the switch 77 using the wire 78 from the operating device B according to the state of the field. The position (lower limit height) can be easily adjusted. Further, it is possible to avoid the pickup device F from being lowered more than necessary. Thereby, damage to the pickup device F (particularly the tine 40) can be prevented. Further, after the pickup device F is raised, when the pickup device F is lowered again, it can be easily returned to the previously set lower limit height.

It is a side view of the roll baler which concerns on one embodiment of this invention. It is a top view of a pick-up apparatus and a conveying apparatus. It is a partial side view of a roll baler which shows the state which raised the conveying apparatus and the pick-up apparatus. It is the schematic of a swing link mechanism. It is a partial side sectional view of a roll baler. It is a partial side sectional view of a roll baler. It is a partial side sectional view of a roll baler.

Explanation of symbols

A traveling device B operating device C roll baler body D bale forming device E transport device F pickup device G swing link mechanism H rotating means I movable means J lower limit height adjusting means R roll bale 10 body frame 33 neck support shaft (pickup) Drive shaft)
61 Followed swing bar (slide bar)
67 Hydraulic cylinder

Claims (3)

  In a roll baler that collects materials such as grass and rice straw scattered in the field to form a roll bale, the body frame is provided with a transport device that is pivotable up and down, and the front end of the transport device can swing freely. A pick-up device provided on the mobile device, a movable means for rotating the transport device up and down, and a swing link mechanism for swinging the pick-up device up and down in conjunction with the vertical rotation of the transport device. A featured roll baler.   The swing link mechanism has one end pivotally connected to the body frame and the other swing support shaft pivotally connecting the pickup device, and one end pivots to the body frame. The other end is rotatably connected to the pickup device, and is provided so as to intersect the transport device. The pick-up device is swung around the oscillation support shaft by the rotation of the transport device. The roll baler according to claim 1, further comprising a driven swing bar that swings and rotates. The roll baler according to claim 1 or 2, further comprising lower limit height adjusting means for adjusting a lower limit height of the pickup device.

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