JP2008136443A - Farm working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a farm working machine enabling easy movement of a heavy stand while sitting the worker on the driver's seat of a traveling machine body. <P>SOLUTION: A tilling machine 1 which is an example of the farm working machines has a stand 15 with castors, which is connected to the machine in a manner turnable outside an end part in the width direction of the machine body 2 around a turning shaft 21 provided at the machine body 2. The stand 15 with castors is turned by a motor-driven hydraulic cylinder provided at the machine body 2, and the cylinder is remotely operated by a worker sitting on the traveling machine body 90 to move the stand 15 with castors between a use position Ps and a non-use position Pn. The tilling machine 1 has a locking device 30 to interlock a hook 38 provided at the machine body 2 with a pin member 39 attached to the stand 15 with castors to automatically fix the stand 15 to the machine body 2 when the stand 15 with castors moves to the use position Ps, and a manually operated sub-locking device 50. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an agricultural machine that is detachably attached to a rear portion of a traveling machine body and is provided with a stand or a stand with casters.

  Conventionally, it is detachably attached to the rear part of a traveling machine such as a tractor, and the operator can rest on the driver's seat of the traveling machine while the stand is in a use position for supporting the machine and a non-use position for making the machine unsupported. Agricultural machines that can be switched are known. Such a farm work machine 80 is described in Patent Document 1, for example, and as shown in FIG. 7A (overall rear view) and FIG. 7B (partial configuration diagram), the width direction of the machine body 81 A stand 82 is attached to the side surface of the end portion so as to be rotatable in the vertical direction, and the operation lever 83 is tiltably operated by connecting the operation lever 83 provided to the front portion of the machine 81 and the stand 82 with a wire 84. Then, the stand 82 is configured to rotate in the vertical direction via the wire 84 and the wire guide 85 that guides this movement.

Japanese Utility Model Publication No. 4-28002

  Attach a high-strength large-sized stand or heavy-duty caster stand used for heavy-duty working machines such as large working machines and folding work machines that have rapidly spread in recent years to this conventional agricultural working machine, and pull the wire If the stand is to be rotated upward, the operation lever needs to be moved with a considerable force, which causes a problem that the operation of moving the stand becomes difficult.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide an agricultural machine that can easily move a heavy stand while an operator is still on the driver's seat of a traveling machine body. And

  In order to solve such a problem, the present invention has the following features. One of the features is that in a farm work machine (for example, tillage work machine 1, 1 ', 60 in the embodiment) that is detachably attached to the rear part of the traveling machine body and is provided with a stand or a stand with casters, the stand or caster. An attached stand is rotatably connected between a use position for supporting the aircraft and a non-use position for making the aircraft unsupported, and an actuator (for example, in the embodiment, provided with a stand or a stand with casters) It is characterized in that it is rotated by an electric hydraulic cylinder 23) and the actuator is driven by remote control to move the stand or the stand with casters to a use position and a non-use position.

  According to this feature, even if the weight of the stand or the stand with casters is heavy, the stand or the stand with casters can be easily moved by rotating the stand or the stand with casters by an actuator provided on the airframe. . In addition, by driving the actuator by remote control and moving the stand or the stand with casters to the use position and the non-use position, the stand or the stand with casters can be mounted while the worker is on the traveling machine body connected to the farm work machine. It can be easily moved to the use position and the non-use position.

  One of the features is that the stand or the stand with casters is rotated upward with respect to the machine body and is stored in a non-use position above the machine body.

  According to this feature, the stand or the stand with casters is stored in the non-use position above the machine body so that the stand or the stand with casters does not protrude to the side of the agricultural machine, and the stand or the stand with casters is stored. The farming machine can be farmed while the length in the width direction of the farming machine is shortened, and the farming machine can be easily moved.

  Further, one of the features is that a lock device is provided for fixing the stand or the stand with casters to the body when the stand or the stand with casters moves to the use position.

  According to this feature, when the stand or the stand with casters moves to the use position, the lock operation of the stand or caster stand moved to the use position is automated by fixing the stand or the stand with casters to the body by the lock device. It is possible to reduce the labor of the operator accompanying the locking work.

  According to the agricultural machine according to the present invention, it is possible to provide an agricultural machine that can easily move a heavy stand while the operator is on the driver's seat of the traveling machine body by having the above feature.

  Hereinafter, an embodiment of an agricultural machine according to the present invention will be described with reference to FIGS. In addition, this embodiment demonstrates a tilling work machine as an example among farm work machines.

[First Embodiment]
In the first embodiment, a tilling work machine for plowing will be described. As shown in FIG. 1 (side view) and FIG. 2 (front view), this tilling work machine 1 is connected to the front part of the machine body 2 with a three-point link connection mechanism (not shown) provided at the rear part of the traveling machine body 90. The top mast 3 and the lower link connecting portion are provided, and the tilling work machine 1 is mounted on the rear part of the traveling machine body 90 so as to be movable up and down. Further, power is transmitted from the PTO shaft of the traveling machine body 90 to the input shaft 4a projecting forward from the gear box 4 provided at the center in the width direction of the tilling work machine 1 through power transmission means such as a universal joint. It is like that.

  A main frame 5 extends from both sides of the gear box 4 in the width direction, a chain transmission case 6 is suspended from an end of the main frame 5 on the left side in the traveling direction, and a side portion is provided on the end of the right main frame 5. A frame is suspended from the chain transmission case 6. A transmission mechanism (not shown) is provided in the left main frame 5 and the chain transmission case 6, and a tilling rotor 7 having a large number of tilling claws attached between the chain transmission case 6 and the lower ends of the side frames is rotatably supported. Has been. Then, the power transmitted to the input shaft 4a is transmitted to the transmission mechanism in the main frame 5 and the chain transmission case 6 through the gear box 4 to rotate the tilling rotor 7 in a predetermined direction.

  The upper side of the tilling rotor 7 is covered with a shield cover 8, and side frames 9 are provided at both left and right ends of the shield cover 8. A front end portion of the apron 10 is pivotally supported at the rear end portion of the shield cover 8 so as to be rotatable in the vertical direction. The apron 10 extends rearward, the tip thereof is grounded, and the leveler 11 acts last, so that the cultivated soil surface is leveled.

  Further, a stand 15 with casters is provided at the front end portion of the side frame 9 to keep the posture of the tiller working machine 1 constant when the tiller working machine 1 is attached to and detached from the traveling machine body 90. The stand 15 with casters has a connecting part 16 extending in the vertical direction and a main body part 17 which is connected to the lower part of the connecting part 16 and extends in the front-rear direction. 18 is attached. The connecting portion 16 of the caster stand 15 is attached to the holder 20 provided on the side frame 9 so as to be able to turn about 180 degrees in the vertical direction. The holder 20 is provided with a rotation center shaft 21 extending in the front-rear direction. By inserting the rotation center shaft 21 into the insertion hole provided in the connecting portion 16 via the holder 20, the stand 15 with casters is provided. Is attached to be pivotable in the vertical direction.

  When the stand 15 with casters is rotated around the rotation center shaft 21, most of the stand 15 rotates outside the width direction end of the machine body 2, and when the connecting portion 16 extends substantially vertically downward, When the portion 17 is located below the fuselage 2 and moves to a use position Ps extending from the front side of the fuselage to the rear side, and the connecting portion 16 extends substantially vertically upward, the main body portion 17 is positioned above the fuselage 2. Then, it is moved and stored in the non-use position Pn extending from the front side to the rear side. When the stand 15 with casters is stored, the connecting portion 16 extends in a substantially vertical direction. However, with the stand 15 with casters being stored, the connecting portion 16 is inclined obliquely inward of the fuselage. By doing so, the caster-equipped stand 15 can be stored in a more stable state.

  The caster-equipped stand 15 is configured to rotate by expansion and contraction of the electric hydraulic cylinder 23 provided at the front end of the shield cover 8. The electric hydraulic cylinder 23 is arranged so as to extend along the body width direction, and the base end portion of the cylinder tube 23a is pivotally connected to the front side front end portion of the shield cover 8 inside the side frame 9. The tip of the rod 23 b is pivotally connected to the upper portion of the connecting portion 16 of the caster-equipped stand 15 via the link member 24. The link member 24 is formed in a curved shape. As shown in FIGS. 3A to 3C, when the electric hydraulic cylinder 23 is substantially fully extended, the connecting portion 16 of the stand 15 with casters is substantially omitted. When the stand 15 with casters is moved to the use position Ps in a state where it is extended vertically downward, and the electric hydraulic cylinder 23 is substantially fully contracted, the connecting portion 16 of the stand 15 with casters is extended substantially vertically upward. The caster-equipped stand 15 is formed to move to the non-use position Pn.

  The operation of the electric hydraulic cylinder 23 is controlled by an electrically connected control unit 26, which operates in response to an operation signal from an operation switch 27 provided in the driver's seat of the traveling machine body 90 and is fully extended. Fully contracted state. The actuator for rotating the caster stand 15 may be a hydraulic cylinder or an electric motor. Moreover, the operation switch 27 should just be installed in the range which the operator who boarded the traveling body 90 reaches, and may be provided in the tilling work machine 1 side.

  Around the holder 20, a lock device 30 for fixing the caster stand 15 to the machine body 2 is provided. The lock device 30 includes an electric hydraulic cylinder 23, a link member 31 pivotally connected to the tip of the cylinder rod 23b, a connecting member 33 pivotally connected to the tip of the link member 31, and a tip of the connecting member 33. A hook 38 that is pivotally connected to the portion and is rotatable in the vertical direction, and a pin member 39 that is attached to the connecting portion 16 of the stand 15 with casters and can lock the hook 38 is configured.

  The lock device 30 is operated by the expansion and contraction of the electric hydraulic cylinder 23. When the electric hydraulic cylinder 23 is fully extended, the tip of the hook 38 is rotated upward via the link member 31 and the connecting member 33. The hook 38 is locked by the pin member 39 to lock the caster-equipped stand 15 moved to the use position Ps. Further, in the locking device 30, when the electric hydraulic cylinder 23 starts to shrink from the fully extended state, the tip end portion of the hook 38 rotates downward via the link member 31 and the connecting member 33, and the hook 38 is moved to the pin member 39. The caster stand 15 is released from the locked state.

  The connecting member 33 includes a shaft portion 34 whose lower end portion is rotatably connected to the hook 38 and is supported so as to be slidable in the axial direction, and a compression spring 35 that biases the shaft portion 34. The rotation in the direction in which the hook 38 is detached from the pin member 39 is suppressed by the compression spring 35 so that the hook 38 is difficult to be detached from the pin member 39.

  Further, as a further safety measure when removing the tilling work machine 1 from the traveling machine body 90 and manually moving the tilling work machine 1 using the stand 15 with casters, the connecting portion 16 of the stand 15 with casters is provided with a caster. A sub-block device 50 for manually fixing the stand 15 to the machine body 2 is provided. The sub-block device 50 is provided with a stand through the machine-side fixing hole 20a provided in the holder 20, the stand-side fixing hole 16a provided at the upper portion of the connecting portion 16 of the caster-equipped stand 15, and the machine-side fixing hole 20a. The fixing pin 51 is inserted into the side fixing hole 16a. The machine body side fixing hole 20 a provided in the holder 20 is provided at a position having a predetermined distance below the rotation center shaft 21.

  In order to support the tilling work machine 1 by the caster-equipped stand 15 of the tilling work machine 1 configured as described above, as shown in FIG. 1 and FIG. 27 is operated to extend the electric hydraulic cylinder 23. When the electric hydraulic cylinder 23 is extended, the connecting portion 16 of the caster stand 15 is rotated downward about the rotation center shaft 21 via the link member 24, so that the caster stand 15 is the width of the tillage work machine 1. The outside of the direction end is rotated. When the electric hydraulic cylinder 23 is almost fully extended, the caster-equipped stand 15 moves to the use position Ps. Thus, since the stand 15 with a caster rotates the outer side of the width direction edge part of the tilling work machine 1, it can move to the use position Ps, without contact | abutting to the rear wheel 91 of the traveling machine body 90. FIG.

  Simultaneously with the rotation of the caster stand 15, the hook 38 of the locking device 30 rotates upward via the link member 31 and the connecting member 33, and the tip of the hook 38 approaches from below the pin member 39. It moves in the direction and is locked to the pin member 39. When the tiller working machine 1 is removed from the traveling machine body 90 and the tiller working machine 1 is to be moved manually using the stand 15 with casters, the worker can remove the working machine body 90 from the traveling machine body 90 to take further safety measures. After descending, the fixing pin 51 of the sub-block device 50 is inserted into the stand side fixing hole 16a through the machine body side fixing hole 20a shown in FIG.

  As described above, the caster-equipped stand 15 is rotated by the electric hydraulic cylinder 23 provided in the machine body 2, and the electric hydraulic cylinder 23 can be operated only by operating the operation switch 27 while the operator is riding on the traveling machine body 90. Since it is driven, even if the weight of the stand 15 with casters is large, the stand 15 with casters can be easily moved. When the caster stand 15 moves to the use position Ps, the lock device 30 locks the caster stand 15 with respect to the machine body 2, and thus the locking operation of the caster stand 15 moved to the use position Ps can be automated. It is possible to reduce the labor of the worker accompanying the locking work. Moreover, if the stand 15 with a caster is locked with respect to the body 2 by the sub-block device 50, it becomes a double lock structure and is safer.

  Here, when it is going to attach to the traveling machine body 90 from the state where the tilling work machine 1 is removed from the traveling machine body 90, first, the traveling machine body 90 and the tilling work machine 1 are brought close to each other. Then, the fixing pin 51 of the sub-block device 50 is removed in advance. Thereafter, the operator gets on the traveling machine body 90 and operates the three-point link coupling mechanism to couple the tilling work machine 1 to the traveling machine body 90. When the caster-equipped stand 15 at the use position Ps is moved to the non-use position Pn and stored, when the operator operates the operation switch 27 while riding on the traveling machine body 90, FIG. As shown in the front view, the electric hydraulic cylinder 23 is reduced, and the hook 38 is rotated downward via the link member 31 and the connecting member 33 of the locking device 30 to release the locked state of the stand 15 with casters. Is done. When the caster-equipped stand 15 is rotated upward through the link member 24 and the electric hydraulic cylinder 23 is substantially fully contracted, as shown in FIG. 3C (partial front view), the caster-equipped stand 15 moves to the non-use position Pn and is stored above the fuselage 2.

  Thus, the caster stand 15 can be moved to the non-use position Pn and stored only by operating the operation switch 27 while the operator is on the traveling machine body 90. Therefore, the weight of the caster stand 15 is reduced. Even if this is large, the caster-equipped stand 15 can be easily moved to the non-use position Pn, and the labor of the operator when the caster-equipped stand 15 is stored can be reduced.

  In the embodiment described above, the stand 15 with casters is shown as means for supporting the machine body 2 of the tilling work machine 1, but as shown in FIG. 4 (side view), the machine body is provided by a stand 15 ′ without casters. 2 may be supported.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the second embodiment, only differences from the above-described first embodiment will be described, and the same reference numerals will be given to the same aspects as those in the first embodiment, and the description thereof will be omitted.

  As shown in FIG. 5 (side view), the tilling work machine 60 is provided on the machine body 2 and has a working machine body 61 having a tilling body that performs the tilling work, and is foldable on the back side of the working machine body 61. An extended tillage body 62 that extends the working width of the tillage body is provided, and the working machine body 61 and the extension work bodies 62 and 62 form a three-part structure.

  The stand 15 with casters is a holder provided on the side frame 9 disposed on the left and right sides of the machine body 2 in front of the work machine body 61 in a state where the extended tillage body 62 is folded on the back side of the work machine body 61. It is attached so that it can rotate about 180 degrees in the up-down direction with respect to the 20 rotation center shafts 21. The rotation center shaft 21 extends in the front-rear direction, and the caster stand 15 rotates the outside of the extension work body 62 folded around the rotation center shaft 21 in the body width direction to use the position Ps. And the non-use position Pn.

  The tiller working machine 60 having the three-part structure configured as described above is a state in which the extended tiller 62 is folded to the back side of the work machine main body 61 immediately after the tiller working machine 60 is connected to the traveling machine body 90. The attached stand 15 is at the use position Ps. When the caster stand 15 is rotated upward in this state, the caster stand 15 moves to the non-use position Pn.

  And since this non-use position Pn is located above the working machine main body 61, the rotation of the extended tillage body 62 folded back is not obstructed. For this reason, when the stand 15 with casters is in the non-use position Pn, the extended tillage body 62 can move between the folded state and the unfolding work state without interfering with the stands 15 with casters.

  Then, with the stand 15 with casters remaining in the non-use position Pn, a tilling operation using only the work machine main body 61 and a tilling operation with the extended tiller body 62 in the unfolded state are arbitrarily selected. After the tillage working machine 60 is folded, the caster-equipped stand 15 is moved from the non-use position Pn to the use position Ps. Then, the operator operates the three-point link connecting mechanism while riding on the traveling machine body 90 to release the connection between the tilling work machine 60 and the traveling machine body 90.

  Thereafter, the operator gets off the traveling machine body 90, and in order to take further safety measures as necessary, the fixing pin 51 of the sub-block device 50 is placed on the stand side via the machine body side fixing hole 20a shown in FIG. It passes through the fixing hole 11a.

  In this way, by providing the caster stand 15 on the tiller working machine 60 having a three-part structure, the caster stand 15 can be used at the use position without the operator getting off the traveling machine body 90 as in the first embodiment. It can be moved to Ps and the non-use position Pn, and the labor of the operator for moving the caster-equipped stand 15 to these positions can be reduced.

[Third Embodiment]
In the third embodiment, the tilling work machine 1 of the first embodiment described above is used for plowing and crushed soil, and the same reference numerals are given to the same aspects as the first embodiment, and the description thereof is omitted. To do. As shown in FIG. 6 (side view), this tilling work machine 1 ′ is provided inside the side frame 9 on the front side of the machine body, that is, inside the stand 15 with casters so that the vertical position can be adjusted. A grounding wheel 55 that travels in contact with the field while keeping the working depth by the above is provided on the machine body 2 via the wheel arm 56.

  When the tilling work machine 1 ′ configured as described above is in a state of being removed from the traveling machine body 90, first, the traveling machine body 90 and the tilling work machine 1 ′ are brought close to each other, and the fixing pin 51 of the sub-block device 50 is removed in advance. Take it off. Then, the worker rides on the traveling machine body 90 and operates the three-point link coupling mechanism to couple the tilling work machine 1 ′ to the traveling machine body 90. Then, to move the caster-equipped stand 15 at the use position Ps to the non-use position Pn, the operator operates the operation switch 27 shown in FIG. The locked state of the caster stand 15 is released, and the caster stand 15 is moved to the non-use position Pn. Then, the tilling work is performed while the caster-supported stand 15 is kept at the non-use position Pn, and after the tilling work is finished, the stand 15 with casters is moved from the non-use position Pn to the use position Ps. Then, the operator operates the three-point link connecting mechanism while riding on the traveling machine body 90 to release the connection between the tilling work machine 1 ′ and the traveling machine body 90.

  Thereafter, the operator gets off the traveling machine body 90, and in order to take further safety measures as necessary, the fixing pin 51 of the sub-block device 50 is placed on the stand side via the machine body side fixing hole 20a shown in FIG. It passes through the fixing hole 11a.

  In this way, by providing the caster stand 15 on the tilling work machine 1 ′, the caster stand 15 is moved from the traveling machine body 90 to the use position Ps and the non-loading position without the operator getting off the traveling machine body 90, as in the first embodiment. It can be moved to the use position Pn, and the labor of the operator for moving the caster-equipped stand 15 to these positions can be reduced.

  The plowing and plowing / crushing tillage working machines have been described as farming machines, but the embodiments of the present invention are not limited to these, and the farming machines are also applicable to other models such as a paddy coater. Is possible. Further, in the above-described embodiment, the example in which the stand 15 with casters is provided so as to be rotatable in the machine width direction of the tilling work machines 1, 1 ′, 60 is shown, but the stand 15 with casters is attached to the rear part of the machine body. You may provide so that rotation in the front-back direction is possible.

The side view of the tillage working machine which provided the stand with a caster concerning 1st Embodiment of this invention is shown. The front view of the tillage working machine which provided the stand with a caster concerning 1st Embodiment of this invention is shown. The partial front view of the stand with a caster for demonstrating operation | movement of the stand with a caster concerning 1st Embodiment of this invention is shown. The side view of the tilling machine provided with the stand concerning a 1st embodiment of the present invention is shown. The side view of the tillage working machine which provided the stand with a caster concerning 2nd Embodiment of this invention is shown. The side view of the tillage working machine which provided the stand with a caster concerning 3rd Embodiment of this invention is shown. The conventional farm work machine provided with the stand with a caster is shown, The figure (a) is a whole rear view of a farm work machine, The figure (b) is a partial block diagram of a farm work machine.

Explanation of symbols

1,1 ', 60 Tillage work machine (agricultural work machine)
2 Airframe 15 Stand with casters 15 'Stand 23 Electric hydraulic cylinder (actuator)
30 Locking device 90 Traveling machine body Ps Use position Pn Non-use position

Claims (3)

Agricultural work machine that is detachably attached to the rear part of the traveling machine body and has a stand or a stand with casters on the machine body,
The stand or the stand with casters is rotatably connected between a use position for supporting the airframe and a non-use position for making the airframe unsupported,
The stand or the stand with casters is rotated by an actuator provided on the airframe,
A farm working machine, wherein the actuator is driven by remote operation to move the stand or the stand with casters to the use position and the non-use position.   The farm work machine according to claim 1, wherein the stand or the stand with casters is rotated upward with respect to the machine body and is stored in a non-use position above the machine body.   The agricultural working machine according to claim 2, further comprising a lock device that fixes the stand or the stand with casters to the machine body when the stand or the stand with casters moves to the use position.

Images