JP5818508B2 - Work machine cart - Google Patents

Description

  The present invention relates to a carriage that can move a work implement such as a rotary tiller mounted on a work vehicle such as a tractor while being detached from the work vehicle.

The work performed by the tractor includes a normal tillage work, a plowing work, and the like. Depending on the work content, the work machine mounted on the tractor is replaced with a rotary tiller, a drive harrow, or the like. In addition, since the removed working machine is disturbed if it is left as it is, it must be moved to a storage location such as a warehouse or a barn.
Therefore, a stand with a caster is attached to each work machine to move the work machine. When removing the work machine from the tractor, the work machine is lifted by the tractor lifting device. After the stand is attached to the machine or the stand in the non-working posture is reversed to the working posture, the work machine is lowered and the work machine is placed on the stand.
On the other hand, a stand with casters is provided with a dedicated stand according to the work machine, so it costs the purchase of the stand, so the invention of a stand on which the work machine can be mounted universally regardless of the type or manufacturer of the work machine (See, for example, Patent Document 1).

JP 2000-83409 A

As described above, the stand on which the work machine can be placed and moved can be used universally regardless of the type and manufacturer of the work machine, considering the cost. However, in the stand described in Patent Document 1, after the work machine is lifted by the tractor lifting device in the same manner as the conventional stand, the work machine is lowered and the work machine is lowered. Must be placed on.
For this reason, it is necessary to place a work machine that has already been removed from the tractor and place it on the stand, and on the contrary, to lower the work machine placed on the stand and place it on the spot. It is difficult because it is a thing. Also, even if it is a stand that can be used for general purposes, once the stand on which the work implement is placed becomes a stand dedicated to that work implement unless it is lowered, it is necessary to move another work implement However, there is a problem that the work machine cannot be moved using the stand.
Therefore, in view of such problems, the present invention is capable of moving a work implement that has been removed from a tractor and placed to a storage location, and placing the work implement moved to a storage location on the spot. Another object of the present invention is to provide a general-purpose carriage for moving a work machine that can be used as it is as a moving means for another work machine.

According to a first technical means of the present invention for solving the above-mentioned problem, a cart of a work machine provided with casters includes a support part that supports an upper part and a lower part of the work machine , and the support part is provided on the work machine. is composed of a lower support portion for supporting the tilling claws axis an upper support portion for supporting the upper connecting pins, with the cormorants addressed to the upper support portion said upper connecting pins stationary been working machine, the tilling claws shaft When the work machine is directed to the lower support part and tilts the work machine together with the carriage, the work machine floats on the carriage and is supported by the support part .
Et al is, second, third, and fourth technical means is to adjustably configure the height for supporting the upper part of the working machine, adjustably configure the height for supporting the lower portion of the working machine And a position for supporting the lower portion of the work implement is adjustable in the left-right direction.

According to the cart of the working machine provided with the caster of the present invention, the working machine is provided with a support part for supporting the upper part and the lower part of the work machine, the support part is addressed to the upper part and the lower part of the stationary work machine, When the machine is tilted, the work machine floats on the carriage and is supported by the support part, so the work machine that has been removed from the work vehicle and placed in place can be easily placed on the carriage. It can be moved to a storage location. In addition, since the work equipment moved to the storage location can be easily lowered from the cart and placed on the spot, the cart can be reused as a means of moving another work equipment, increasing cost effectiveness. Can do.
In addition, if the support part for supporting the upper and lower parts of the work implement is composed of an upper support part for supporting the upper connection pin of the work implement and a lower support part for supporting the tilling claw shaft, it is mounted on the cart on the work implement side. There is no need to add new parts or the like for installation, and there is no need for extra costs or installation of parts.
In addition, the height to support the upper part of the work implement is adjustable, the height to support the lower part of the work implement is adjustable, or the position to support the lower part of the work implement is adjusted in the left-right direction If it is configured freely, the compatibility of the work machine that can be placed on the cart can be increased, and the work machine can be mounted on the cart in an appropriate posture to prevent unexpected fall and the like. It can move smoothly.

It is a perspective view of a trolley. It is a side view of a trolley. It is a front view of a trolley. It is the side view (a) and front view (b) which show the detail of a lower support part. They are the rear view (a) which shows the detail of an upper support part, a side view (b), and a front view (c). It is a side view which shows the state which mounts a trolley | bogie to a working machine. It is a side view which shows the state which mounted the working machine on the trolley | bogie. It is a rear view which shows the state which mounted the working machine on the trolley | bogie.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1 to FIG. 3, the cart 1 of the work machine includes a frame part A, a caster part B, a lower support part C, and an upper support part D.
Among them, the frame portion A that forms the skeleton of the carriage 1 is welded by joining the end portions of the horizontal frame frames 3 and 3 to the vertical frame frames 2 and 2 constituted by square pipes, and welding. 2 welds the leg of the handle 4 made of a round pipe to the upper surface of the rear part, and joins the ends of the reinforcing frames 5 and 5 to the middle of the vertical frame 2 and 2 and the middle of the leg of the handle 4 Further, the reinforcing plate 6 is welded between the middle portions of the leg portions of the handle 4 to constitute the frame of the carriage 1.

  The caster part B includes front casters (front wheels) 7 and 7 and rear casters (rear wheels) 8 and 8 attached to the lower surfaces of the front and rear parts of the vertical frame frames 2 and 2. , 8 can be configured so that all of them can change direction, or one of them can change direction, neither of which can change direction.

  Further, as shown in FIG. 4, the lower support portion C includes a support cylinder 9 that forms a female screw portion 9 a on the upper inner periphery and a rod 10 that forms a male screw portion 10 a on the lower outer periphery. The support cylinder 9 is provided with a boss 11 formed of a square pipe at the lower portion, and the boss 11 is externally fitted to the front horizontal frame 3 so that the lower support portion C cannot be rotated back and forth and is laterally movable. The position is adjustable. Further, the male screw portion 10a of the rod 10 is screwed into the female screw portion 9a of the support cylinder 9, and when the rod 10 is rotated relative to the support cylinder 9, the rod 10 expands and contracts, The height of the integrally formed receiving portion 10b can be adjusted.

  And the upper support part D is comprised by the upward hook 12 as shown in FIG. The hook 12 is attached to the reinforcing plate 6 with a bolt 13, a nut 14, and a washer 15, and the bolt 13 is inserted into a vertical hole 6 a formed in the reinforcing plate 6. Therefore, when the nut 16 is loosened by grasping the grip 16 composed of a round bar welded to the end of the nut 14, and then the bolt 13 position is adjusted and the nut 14 is tightened again, the mounting height of the hook 12 is increased or decreased. Can be adjusted to the direction.

Next, a configuration of the rotary tiller 17 will be described as an example of a working machine placed on the carriage 1. As shown in FIGS. 6 to 8, the rotary tiller 17 is connected to a top link and a lower link of a three-point link mechanism provided at a rear portion of a tractor (not shown) to perform a tilling operation on the field.
The rotary tiller 17 includes a gear case 18 to which PTO power is input from the tractor side, and a top mast 19 including a pair of left and right plates is attached to the gear case 18. Further, an upper connecting pin 20 that is coupled to the top link is provided at an upper front portion of the top mast 19.

  Further, pipe frames 21 are attached to the left and right of the gear case 18 of the rotary tiller 17. A chain case 22 is attached to the outer end of the left pipe frame 21, and a side frame 23 is attached to the outer end of the right pipe frame 21. Further, a tilling claw shaft 24 is rotatably supported between the lower end side of the chain case 22 and the lower end side of the side frame 23, and a plurality of tilling claws 25 are attached to the tilling claw shaft 24. The upper, rear and side portions of the tilling claw 25 are covered with a main cover 26, a rear cover 27 and a side cover 28.

  The front end of the rear cover 27 is pivotally supported on the main cover 26 side, and is suspended by a pressure rod 29. Here, when the rotary tiller 17 is removed from the tractor and placed on the spot, the vertical movement of the pressure rod 29 is fixed in advance to make the rear cover 27 unrotatable. Thereafter, the tiller 25 of the rotary tiller 17 is lowered until it comes into contact with the ground, and the rotary tiller 17 is removed from the tractor. As shown in FIG. Hold in a standing position.

  Next, a method of using the carriage 1 will be described. When the fixed rotary tiller 17 is first placed on the carriage 1, the front side of the carriage 1 is directed to the front side of the fixed rotary tiller 17. The handle 4 is lifted with the front casters 7 and 7 as fulcrums, and the carriage 1 is tilted forward. Then, the hook 12 is hooked on the upper connecting pin 20 so that the hook 12 engages with the upper connecting pin 20 of the top mast 19 in the forward inclined posture of the carriage 1. When the handle 4 is pushed down in this state, the rotary tiller 17 gradually tilts forward. Further, when the rotary tiller 17 is tilted forward, the receiving portion 10b provided on the upper portion of the rod 10 is directed to the tillage claw shaft 24, and thereafter, the rotary tiller 17 is lifted and lifted from the ground. Finally, as shown in FIG. 7, the rotary tiller 17 is supported and placed by the hook 12 and the receiving portion 10 b on the carriage 1.

  Therefore, in order to place the work machine 17 on the carriage 1, the hook 12 constituting the upper support part D of the carriage 1 and the receiving part 10 b of the rod 10 constituting the lower support part C are placed on the upper part of the work machine 17. When the working machine 17 is tilted forward together with the carriage 1 when it is directed to the upper connecting pin 20 provided and the tilling claw shaft 24 provided at the lower part, the working machine 17 floats on the carriage 1 and supports the upper support D and the lower support. The mounting posture is supported by the part C. Accordingly, when the handle 4 is pushed, the front and rear casters 7 and 8 roll, and the work machine 17 can be moved to the storage location.

  Further, when the work machine 17 is placed at the storage location, the reverse procedure is performed. At this time, when the handle 4 is lifted, the tilling claws 25 are grounded first, and when the handle 4 is further lifted, the lower end of the rear cover 27 is grounded to the original working machine 17 standing posture. At that stage, if the hook 12 of the upper support D and the receiving portion 10b of the lower support C of the carriage 1 are detached from the work implement 17 and the carriage 1 is retracted to the front of the work implement 17 at this stage, the work implement 17 is separated. Can be fixed. After that, the carriage 1 can be used as a carriage for moving another work machine. On the other hand, since the stationary work machine 17 is in the standing posture and the carriage 1 is removed, the work machine 17 itself needs a storage space for the work machine 17.

When the work implement 17 is placed on the carriage 1, the positions of the upper support portion D and the lower support portion C are adjusted on the cart 1 side in advance so that the work implement 17 is placed in an appropriate posture. It is preferable to keep it.
That is, when the rotary tiller 17 is used as a working machine, the tilling claw 25 is the lowermost end, so that the height of the receiving part 10b of the lower support part C that supports the tilling claw shaft 24 is adjusted by the rotation of the rod 10. Then, at least the rotary tiller 17 is placed on the carriage 1, and the height of the tillage claw 25 is adjusted to rise from the ground.

Next, the horizontal position of the receiving portion 10b is adjusted by the left and right movement of the boss 11 so that the left and right receiving portions 10b and 10b do not interfere with the tilling claw 25. To do.
Further, the vertical position adjustment of the hook 12 constituting the upper support portion D is determined by the length between the upper connecting pin 20 and the tilling claw shaft 24 and can be adjusted in advance. The nut 14 is loosened in advance before being placed on the hook, and then the hook 12 is engaged with the upper connecting pin 20 in a state where the receiving portion 10b of the lower support portion C is applied to the tilling claw shaft 24. The nut 14 can be tightened and fixed at that position.

In the above-described embodiments, the rotary tiller 17 is taken as an example of the working machine. However, the working machine may be a drive harrow that is relatively similar to the configuration of the rotary tiller, or a coater. Other working machines may be used.
Moreover, although the upper support part D was comprised so that the upper connection pin 20 normally equipped as a working machine connected with a tractor might be supported by the hook 12, it is not only the upper connection pin 20, but the member which exists in the upper part side of a working machine. You may comprise so that this may be supported.
Similarly, the lower support C may be configured to support a lower connection pin for attaching a lower link, which is normally provided as a work machine connected to the tractor.

1 dolly 7 front caster 8 rear caster 9 support cylinder 10 rod (lower support C)
12 Hook (upper support part D)
17 Rotary tillage device (work machine)
20 Upper connecting pin 24 Tillage claw shaft

Claims (4)

A cart of a work machine equipped with casters includes a support part that supports the upper and lower parts of the work machine , and the support part supports an upper support part that supports an upper connection pin of the work machine and a lower support that supports a tilling claw shaft. is composed of a part, along with the power sale addressed to the upper support portion said upper connecting pins stationary been working machine, Ategai the tilling claws shaft to the lower support portion, when tilted working machine with carriage, the work machine Is a bogie of work equipment configured to float on the bogie and be supported by the support. The work machine carriage according to claim 1, wherein the upper support portion is configured to be adjustable in height to support an upper portion of the work machine . The work machine cart according to claim 1 , wherein the lower support portion is configured to be adjustable in height to support a lower portion of the work machine . The work machine carriage according to claim 1, wherein the lower support portion is configured to be capable of adjusting a position for supporting a lower portion of the work machine in a left-right direction .

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