JP3648536B2 - Attachment mounting method and mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an attachment attachment method and an attachment structure capable of attaching an attachment such as a work machine to a machine such as a tractor by a simple operation.
[0002]
[Prior art]
For example, when directly attaching an attachment such as a fertilizer applicator, a seeder, or a control machine to this machine such as a riding rice transplanter, a passenger management machine, or a tractor, attach an attachment such as a three-point hitch provided in advance on the machine. It is common to use a lifting link. In addition, when attaching an attachment directly to this machine that does not have such a lifting link, some of the attachments have a considerable weight exceeding 100 kg, so that the attachment is lifted manually. It is practically impossible to perform the connecting operation to the machine while holding the machine for a predetermined time, and it has been necessary to use a lifting machine such as a forklift or a chain block.
[0003]
[Problems to be solved by the invention]
However, it is problematic in terms of cost to equip all the machines with a full-scale attachment attachment lifting link. In addition, it is not advantageous in terms of cost and labor to prepare and operate the lifting machine as described above for attachment attachment work.
[0004]
The present invention has been made in view of such circumstances, and it is possible to easily and quickly attach an attachment to a machine that does not have a lifting link with little effort without using a lifting machine. Therefore, it is an object of the present invention to provide an attachment mounting method and a mounting structure that require less modification.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problem, an attachment mounting method according to the present invention described in claim 1 is provided with a pair of first connecting pieces on the attachment side and the machine side, and an operator can move laterally from the center of gravity of the attachment. The attachment is tilted from a self-supporting state by placing a weight on a foot part at a position deviated in the direction to displace the attachment-side first connection piece upward, and the attachment-side first connection piece and the body side The first connecting part piece is combined with each other to form a first connecting part, and the attachment is rotated manually by using the first connecting part as a fulcrum, and the attachment side and the machine side are paired. The second connecting portion pieces provided in combination are combined with each other to form a second connecting portion.
[0006]
According to the method of the present invention, when attaching the attachment to the machine, an operator puts his / her weight on a foot portion located laterally away from the center of gravity of the attachment so that the attachment is independent. It is only necessary to perform an operation of tilting the attachment-side first connecting part piece upward from the state and an operation of rotating the attachment upward using the first connecting part as a fulcrum. Since these operations can be performed by the operator paying only a part of the weight of the attachment, even when the attachment is a heavy object, compared to the operation of lifting the entire attachment as it is manually. , It takes less effort. In particular, it is possible to easily perform the work of manually displacing the attachment-side first connecting part piece upward with less effort by inclining the attachment from a self-supporting state by applying weight to the foot step part. it can. Therefore, according to the method of the present invention, it is possible to easily and quickly attach an attachment to a machine having no attachment attachment lifting link without using a lifting machine and with little effort.
[0007]
In addition, since the machine only needs to be provided with the machine-side first connection piece in pairs with the attachment- side first connection piece, the attachment can be attached using the existing machine as it is. This machine can be manufactured easily.
[0008]
According to a second aspect of the present invention, in the method of the first aspect, the attachment has a detachable bottom frame, and after the second connecting portion is formed, the attachment is further removed from the bottom portion. The frame is removed. If it does in this way, the attachment after attachment becomes compact and it is suitable.
[0009]
In the attachment mounting structure according to the third aspect of the present invention, the attachment-side first connection part piece that is displaced upward by tilting the attachment manually from the self-supporting state and matches the body-side first connection part piece is Secondly, they are provided in pairs with the machine body side connecting part pieces and coincide with each other by manually rotating the attachment upward with a first connecting part formed by a combination of the first connecting part pieces as a fulcrum. A connecting piece is provided on the attachment side and the machine side as a pair, and when the attachment is inclined from the self-supporting state to a position that is laterally deviated from the center of gravity of the attachment in the self-supporting state. Is provided with a stepped part to put on .
[0010]
In this case, when attaching the attachment, the operator puts his / her weight on the stepping part, puts his / her weight on the foot, and pulls the upper part of the attachment so that the attachment is tilted manually from a self-supporting state. The attachment side first connecting part piece is displaced upward, and the attachment side first connecting part piece and the machine side first connecting part piece are combined with each other to form the first connecting part. Next, the attachment is manually rotated upward with the first connecting portion as a fulcrum, and the attachment-side second connecting portion piece and the main unit-side second connecting portion piece are aligned with each other and connected. Thus, the attachment is at least two places, the first connection part formed by the combination of the first connection part pieces and the second connection part formed by the combination of the second connection part pieces. It is firmly fixed to the machine.
[0011]
Thus, according to the present invention as set forth in claim 3, in the attachment mounting operation, the operation of inclining the attachment from a self-standing state and displacing the attachment-side first connection piece upward, since the attachment of the first connection portion as a fulcrum sufficiently performed and a task which can be rotated upward by human power, it requires less effort as compared to the task of holding lift the entire attachment. In particular, it is possible to easily perform the work of displacing the attachment-side first connection piece upward with less labor by placing the weight on the foot portion and inclining the attachment from a self-supporting state. Therefore, it is possible to easily attach the attachment manually to a machine having no attachment attachment lifting link without using a special lifting machine as in the prior art.
[0012]
Further, since it is only necessary to provide the first connecting part piece and the second connecting part piece on the machine side, the machine can be easily manufactured by using the existing machine as it is. .
[0013]
According to a fourth aspect of the present invention, there is provided the attachment mounting structure according to the third aspect of the present invention, wherein the attachment includes a grounding portion that is grounded when the attachment is inclined from a self-supporting state. By doing so, the attachment can be maintained in the inclined state with a small amount of labor, and the attachment work of the attachment becomes easy.
[0015]
The attachment mounting structure according to the present invention as set forth in claim 5 is the structure according to claim 3 or 4 , wherein the attachment is provided with a detachable bottom frame. In this way, after the attachment is attached to the machine, the bottom frame floating from the ground can be removed, so that the attachment after attachment is compact and suitable.
[0016]
The attachment mounting structure according to a sixth aspect of the present invention is the attachment mounting structure according to the third, fourth, or fifth aspect , wherein the pair of first connecting pieces are engaged with each other to form a latched state. It is formed by the piece. If it does in this way, formation of the said 1st connection part by the combination of said 1st connection part piece is easy, Therefore, the said attachment can be quickly attached with little effort.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. Here, as an example, a case will be described in which an attachment 3 composed of a spreader body 2 such as granular fertilizer supported by the bottom frame 1 is directly mounted on the rear part of the riding management machine 4 as a main machine for movement.
[0018]
First, an outline of the attachment mounting method according to the present embodiment will be described with reference to FIGS. 1 to 3.
[0019]
As shown in FIG. 1, one worker M inclines the attachment 3 standing on the ground GL straight by the bottom frame 1 backward, and serves as a first connection piece on the attachment 3 side. The hook 5 is displaced upward by an appropriate height H to a position higher than the pin 6 as the first connecting part piece on the riding management machine 4 side provided as a pair.
[0020]
Then, another operator (not shown), for example, drives the riding management machine 4 to approach the attachment 3 and performs the front-rear engagement position alignment between the hook 5 and the pin 6. Thereafter, as shown in FIG. 2, the one worker M slightly returns the inclined posture of the attachment 3 to the front, and hooks the hook 5 onto the pin 6. Thereby, a part of the weight of the attachment 3 is applied to the riding management machine 4 side.
[0021]
Next, the attachment 3 is rotated so as to be pushed up to the riding management machine 4 side with the connecting portion 7 between the hook 5 and the pin 6 as a fulcrum, and as shown in FIG. The second connecting portions 8 and 9 provided in pairs on the riding management machine 4 side are combined with each other to form the second connecting portion 10. Thereafter, the bottom frame 1 in a state of being lifted from the ground GL may be removed as necessary. A detailed configuration for carrying out the attachment mounting method according to the present embodiment is as follows, for example.
[0022]
In FIG. 4, the spreader body 2 which is a constituent element of the attachment 3 can be fixed to a hopper 11 with an upper lid 11a for accommodating a powder and a left-right lying state and a standing state with respect to the traveling direction. A pair of left and right jet tubes 12 and 12 and a feeding device 13 for feeding the powder in the hopper 11 to the pair of left and right jet tubes 12 and 12 are provided. For example, as shown in FIG. 3, the spreader body 2 is attached to a rear body frame 14 of the riding management machine 4 and drives the feeding device 13 by a driving force supplied from the riding management machine 4 side. At the same time, the powder carrier airflow is supplied to the pair of left and right jet tubes 12 and 12 from a blower (not shown) mounted on the riding management machine 4 side.
[0023]
The attachment 3 is self-supporting straight on the ground GL by the support frame 15 when not attached to the riding management machine 4. As shown in FIG. 4, the support frame 15 includes a fixed frame 16 that is integrally fixed to the spreader body 2, and the bottom frame 1 that is detachably attached to the fixed frame 16.
[0024]
The fixed frame 16 is formed by combining steel square pipes, and includes a pair of left and right vertical frames 17, 17 and a pair of left and right upper arms 18, 18 fixed to the pair of left and right vertical frames 17, 17. A pair of left and right lower arms 19, 19 and a left and right connecting frame 22a for connecting portions corresponding to each other of the pair of left and right vertical frames 17, 17 are provided.
[0025]
The pair of left and right vertical frames 17, 17 are fixed to the left and right sides of the spreader body 2 at the top thereof, and extend vertically when the attachment 3 is in a self-supporting state.
[0026]
The pair of left and right upper arms 18 and 18 have their rear ends fixed to corresponding height positions of the pair of left and right vertical frames 17 and 17 and extend horizontally forward when the attachment 3 is in a self-supporting state. I'm out. Similarly, the pair of left and right lower arms 19, 19 are also fixed at their rear end portions at corresponding height positions of the pair of left and right vertical frames 17, 17, and forward in the self-standing state of the attachment 3. It extends horizontally.
[0027]
On the other hand, the bottom frame 1 is formed by combining steel round pipes, and as shown in FIG. 4, a pair of left and right ground frames 20, 20 having the same shape and a pair of left and right ground frames 20, 20. A pair of left and right pedestal frames 21 and 21 having the same shape, and a plurality of left and right connection frames 22b that connect corresponding portions of the pair of left and right pedestal frames 21 and 21 to each other. .
[0028]
In the bottom frame 1, the pair of left and right grounding frames 20, 20 are bent upward at a position deviating backward from the center of gravity G (see FIG. 1) of the attachment 3 in a self-supporting state. That is, the pair of left and right grounding frames 20, 20 has a pair of left and right front horizontal parts 24, 24 that are in contact with the ground GL when the attachment 3 stands upright, with the pair of left and right bent parts 23, 23 interposed therebetween, It has a pair of left and right rear inclined portions 25, 25 extending integrally diagonally upward rearward from the pair of left and right front horizontal portions 24, 24. As shown in FIG. 1, the pair of left and right rear inclined portions 25 and 25 are grounded to the ground GL when the attachment 3 is inclined backward with the pair of left and right bent portions 23 and 23 as fulcrums. The maintenance of the inclined state of the attachment 3 by the one worker M is facilitated.
[0029]
It should be noted that the weight distribution of each part of the attachment 3 is devised and the position of the center of gravity G is appropriately set so that the attachment 3 can stand on its own even in an inclined state by the pair of left and right rear inclined parts 25, 25. For example, it is not necessary to hold the attachment 3 in an inclined state by human power, which is preferable.
[0030]
As shown in FIG. 4, an operator steps between the pair of left and right rear inclined portions 25, 25 when the attachment 3 is inclined in order to facilitate the operation of inclining the attachment 3 backward. A rod-like stepping portion 26 is provided. Needless to say, the foot step portion 26 reinforces the bottom frame 1 and also has the effect of lowering the contact pressure.
[0031]
The bottom frame 1 and the fixed frame 16 are provided with a pair of connecting pieces that constitute a pair of left and right connecting portions 27, 27 that are detachable by being combined with each other. Here, as shown in an exploded view in FIG. 5, the pair of left and right pedestal frames 21 and 21 of the bottom frame 1 are provided with a pair of left and right connecting inner cylinders 28 and 28 made of steel square pipes. As the side connecting piece, it protrudes upward and is fixed. The outer peripheral shape of the pair of left and right connecting inner cylinders 28 and 28 is adapted to the inner peripheral shape of the lower end portions 17a and 17a of the pair of left and right vertical frames 17 and 17 of the fixed frame 16 as the fixed frame side connecting piece. Shape. The bottom frame 1 is fixed so that the pair of left and right connecting inner cylinders 28 and 28 are inserted into the lower end portions 17a and 17a of the pair of left and right vertical frames 17 and 17 and penetrate through their overlapping portions. It is usually fixed to the fixed frame 16 by means of bolts 29 and nuts 30 as tools.
[0032]
As shown in FIG. 5, the upper and lower sides of the pair of left and right pedestal frames 21, 21 of the bottom frame 1 support the left and right lower arms 19, 19 that are connected to the fixed frame 16. The pair of pillow members 31, 31 are fixed by an appropriate method such as welding.
[0033]
As shown in FIG. 5, the pair of left and right lower arms 19 and 19 constituting the fixed frame 16 and the rear body frame 14 of the riding management machine 4 are detachable by being combined with each other. The first connecting part pieces 5 constituting the first connecting part 7 are provided in pairs.
[0034]
Here, a pair of left and right hook plates 32 are fixed to the front ends of the pair of left and right lower arms 19, 19. The pair of left and right hooks 5 and 5 are formed at the front ends of the pair of left and right hook plates 32 and 32 as the attachment-side first connecting piece. On the other hand, a pair of left and right lower brackets 33, 33 are fixed to the rear body frame 14 of the riding management machine 4, and the passenger management machine side first connection is established by the pair of left and right lower brackets 33, 33. The pair of left and right pins 6 and 6 as a piece are supported. The attachment 3 is attached to the riding management machine 4 by the pair of left and right hooks 5, 5 and the pair of left and right pins 6, 6 provided in pairs on the attachment 3 side and the riding management machine 4 side. Can be held in a hooked state.
[0035]
As indicated by imaginary lines in FIG. 1, the pair of left and right hooks 5 and 5 on the attachment 3 side are connected to the pair of left and right pins 6 on the riding management machine 4 side when the attachment 3 is in an upright standing state. , 6 is lower than the height H by the height H. As shown in FIG. 1, the pair of left and right hooks 5 and 5 on the attachment 3 side are attached to the attachment 3 with the pair of left and right bent portions 23 and 23 of the pair of left and right ground frames 20 and 20 as fulcrums. By tilting backward, a circular arc centered on the fulcrum is drawn and displaced rearward and upward, and the height position is suitable for the hooking operation to the pair of left and right pins 6 and 6 on the riding management machine 4 side. It becomes.
[0036]
Note that, as in the present embodiment, the first connecting portion 7 is preferably composed of a hook 5 as a pair of hooking members, a pin 6 and the like, which facilitates the connecting operation, but is not necessarily limited thereto. There is no need, for example, as in the second connecting portion 10 described in detail below, the attachment 3 side element and the riding management machine 4 side element are used using appropriate fixing tools such as bolts and nuts. Then, they may be connected to each other.
[0037]
Between the pair of left and right upper arms 18, 18 constituting the fixed frame 16 and the rear body frame 14 of the riding management machine 4, the second connecting part 10 that is detachable by being combined with each other is provided. The second connecting part pieces 8 and 9 to be configured are provided in pairs.
[0038]
In the present embodiment, as shown in FIG. 5, a pair of left and right protrusions 8, 8 each having a mounting hole 34 at the front end of the pair of left and right upper arms 18, 18 as the attachment side second connection piece. Is fixed. On the other hand, a pair of left and right upper brackets 9, 9 each having a mounting hole 35 are fixed to the rear body frame 14 of the riding management machine 4 as the riding management machine side second connecting piece. The mounting holes 34 formed in the pair of left and right protrusions 8 and 8 on the attachment 3 side and the mounting holes 35 formed on the pair of left and right upper brackets 9 and 9 on the riding management machine 4 side are After the pair of hooks 5, 5 are hooked on the pair of left and right pins 6, 6 to form the first connecting part 7, the riding management is performed so that the bottom frame 1 is lifted with the first connecting part 7 as a fulcrum. When the attachment 3 is pushed up and turned to the machine 4 side, they coincide with each other. The pair of left and right protrusions 8 and 8 on the attachment 3 side and the pair of left and right upper brackets 9 and 9 on the riding management machine 4 side are connected to each other by a bolt 36 and a nut 37 as a fixing tool. I'm damned.
[0039]
In the illustrated example, the attachment 3 is attached to the pair of left and right hook plates 32, 32 on the attachment 3 side and the pair of left and right lower brackets 33, 33 on the riding management machine 4 side. The matching mounting holes 38 and 39 are formed, and the pair of left and right hook plates 32 and 32 and the pair of left and right lower brackets 33 and 33 are fixed to each other by bolts 40 and nuts 41 as fixing members. Yes.
[0040]
The worker attaches the attachment 3 to the riding management machine 4 as follows.
[0041]
First, as shown in FIG. 1, the one worker M causes the attachment 3 standing on the ground GL to stand straight, in an inclined state. Specifically, a part of the weight is put on the foot step part 26 of the attachment 3 and the upper part of the attachment 3 is pulled rearward, so that the pair of left and right ground frames 20, 20 With the pair of left and right bent portions 23 and 23 as fulcrums, the attachment 3 is moved backward until the pair of left and right rear inclined portions 25 and 25 of the pair of left and right grounding frames 20 and 20 are in close contact with the ground GL. Tilt. Then, the pair of left and right hooks 5, 5 on the attachment 3 side is displaced by the height H in a rearward and upward direction while drawing an arc centered on the pair of left and right bent portions 23, 23. It becomes a height position suitable for the latching work to the pair of left and right pins 6 and 6 on the machine 4 side.
[0042]
Next, the other operator operates the riding management machine 4, brings the rear body frame 14 close to the inclined attachment 3, and the pair of left and right hooks 5, 5 on the attachment 3 side. The front-rear engagement position alignment with the pair of left and right pins 6 and 6 on the riding management machine 4 side is performed.
[0043]
Thereafter, as shown in FIG. 2, when the one worker M returns the attachment 3 to the front, the pair of left and right hooks 5, 5 on the attachment 3 side become the pair of left and right bent portions 23, The first connecting part 7 is formed by drawing an arc centered at 23 and displacing it forward and downward, and hooking on the pair of left and right pins 6, 6 on the riding management machine 4 side. At this time, the attachment 3 which is going to return to the original self-supporting state by its own weight is in a state of leaning on the riding management machine 4 with a return force to the upright self-supporting state, and a part of the weight of the attachment 3 is Supported by the rear body frame 14 of the riding management machine 4.
[0044]
Subsequently, the one worker M pushes and rotates the attachment 3 in the direction in which the bottom frame 1 is lifted from the ground GL, that is, in the direction of the arrow in FIG. 2, with the first connecting portion 7 as a fulcrum. Then, as shown in FIG. 3, the pair of left and right projecting pieces 8, 8 on the attachment 3 side is combined with the pair of left and right upper brackets 9, 9 on the riding management machine 4 side to attach the mounting holes 34. , 35 coincide with each other, and the attachment holes 38 provided in the pair of left and right hook plates 32, 32 on the attachment 3 side and the pair of left and right lower brackets 33, 33 on the riding management machine 4 side, 39 coincide with each other. Therefore, for example, the other operator uses the bolt 36 and the nut 37 to connect the pair of left and right protrusions 8 and 8 on the attachment 3 side and the pair of left and right upper brackets on the riding management machine 4 side. 9 and 9 are connected to each other, and using the bolt 40 and the nut 41, the pair of left and right hook plates 32, 32 on the attachment 3 side and the pair of left and right lower sides on the riding management machine 3 side What is necessary is just to connect the brackets 33 and 33 to each other.
[0045]
Finally, if the fixing tools 29 and 30 are removed and the bottom frame 1 floating from the ground GL is removed from the fixed frame 16, the bottom frame 1 is sprayed by the spreader body 2 and the riding management. This is suitable without obstructing the traveling of the machine 4.
[0046]
In the present embodiment, the first connecting portion 7 and the second connecting portion 10 are configured to be arranged in the vertical direction. However, the present invention is not limited to this, and for example, the first connecting portion and the second connecting portion. And can be configured so that they are arranged in the front-rear direction.
[0047]
Further, if the position of the center of gravity G and the rear inclined portions 25, 25 of the bottom frame 1 are appropriately set to sufficiently secure the self-supporting stability in the inclined state shown in FIG. It is also possible to perform the 3 attachment / detachment work alone.
[Brief description of the drawings]
FIG. 1 is a side view showing one process of an attachment mounting method according to an embodiment of the present invention.
FIG. 2 is a side view showing a process of an attachment mounting method according to an embodiment of the present invention.
FIG. 3 is a side view showing a process of an attachment mounting method according to an embodiment of the present invention.
FIG. 4 is an overall perspective view showing an example of an attachment constituting an attachment mounting structure according to an embodiment of the present invention.
FIG. 5 is an exploded perspective view of a main part of the attachment shown in FIG.
[Explanation of symbols]
1 Bottom frame 3 Attachment 4 Passenger management machine (this machine)
5 Hook ( attachment side first connecting piece)
6 pin (1st connecting part on this machine side )
7 1st connection part 8,9 2nd connection part piece 10 2nd connection part 25 Rear side inclination part (grounding part)
26 Footstep G Center of gravity of attachment

Claims (6)

A position where the first connecting piece (5, 6) is provided in pairs on the attachment (3) side and the machine (4) side, and the operator is laterally disengaged from the center of gravity (G) of the attachment (3). The attachment (3) is tilted from the self-supporting state by placing the weight on the foot (26) at the position to displace the attachment-side first connection piece (5) upward, and the attachment-side first connection piece (5) and the machine body side first connection part piece (6) are combined with each other to form a first connection part (7), and the attachment (3) is manually operated with the first connection part (7) as a fulcrum. The second connecting portion (10) is formed by combining the second connecting portion pieces (8, 9) provided in pairs on the attachment (3) side and the machine (4) side. An attachment mounting method that forms a shape. The attachment (3) has a detachable bottom frame (1), and after the second connecting portion (10) is formed, the bottom frame (1) is removed from the attachment (3). The attachment attachment method according to claim 1, When the attachment (3) is tilted manually from the self-supporting state, the attachment-side first connection part piece (5), which is displaced upwardly and coincides with the body-side first connection part piece (6), is connected to the body-side connection part piece ( 6) It is provided as a pair, and the attachment (3) is rotated manually by using the first connection part (7) formed by the combination of the first connection part pieces (5, 6) as a fulcrum. The second connecting part pieces (8, 9) that match each other by caulking are provided in pairs on the attachment (3) side and the machine (4) side, and further, the attachment (3) in the self-standing state is provided . An attachment mounting structure in which a step part (26) on which an operator puts his / her foot when tilting the attachment (3) from a self-supporting state is provided at a position deviated laterally from the center of gravity (G) . The attachment mounting structure according to claim 3, wherein a grounding part (25) for grounding when the attachment (3) is inclined from a self-supporting state is formed on the attachment (3). The attachment mounting structure according to claim 3 or 4 , wherein the attachment (3) comprises a detachable bottom frame (1). 6. The attachment mounting structure according to claim 3, 4 or 5 , wherein the pair of first connecting pieces are formed by a pair of pieces (5, 6) that engage with each other to form a latched state.

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