JPH0740806B2 - Agricultural work machine connection device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an agricultural work machine connecting device for connecting an agricultural work machine to an agricultural tractor.

(Prior Art) Conventionally, as this type of agricultural machine coupling device, for example,
As described in Japanese Utility Model Laid-Open No. 59-161907, a connection mechanism for connecting the top link of the agricultural tractor and the mast of the agricultural work machine is provided at the top of the mountain-shaped connection frame, and the left and right lower parts of the connection frame are provided. A connecting mechanism that connects the left and right lower links of the agricultural tractor and the left and right lower arms of the agricultural work machine is provided, and an inclination for detecting that the connecting frame is inclined due to a running condition, a working condition, or the like on one inclined portion of the connecting frame. A structure in which a detection device is provided is known.

(Problems to be Solved by the Invention) In the structure described in the above publication, since the inclination detecting device is not a device for performing agricultural work, the connecting frame has a dedicated structure for connecting the agricultural working machine to the three-point link mechanism of the agricultural tractor. There is a problem that. Further, when an agricultural work machine is connected to the three-point link mechanism of the agricultural tractor, the moment weight increases depending on the agricultural work machine, and the front weight may have to be loaded on the agricultural tractor.

Therefore, the present invention has been made in view of such a problem, and enables the equipment for agricultural work to be attached to the quick coupler, which enhances the function of the quick coupler and enables complex work. It is an object of the present invention to provide an agricultural work machine connecting device capable of reducing moment weight by a device for combined work.

(Means for Solving the Problems) The agricultural machine coupling device of the present invention has a quick coupler for coupling the agricultural tractor to the agricultural machine, and the quick coupler has a mountain-shaped coupling frame and a coupling frame of the coupling frame. And a pair of attachments that are integrally provided on both sides to detachably attach agricultural working equipment such as a spraying device.

(Operation) In the agricultural work machine connecting device of the present invention, the quick coupler is connected to the agricultural tractor, and the agricultural work machine is connected to the quick coupler. In addition, agricultural work equipment such as a spraying device is attached to the pair of attachments of the quick coupler. As a result, the quick coupler is equipped with a spraying device as an agricultural machine for complex work,
This field can be cultivated by using, for example, a rotary working body of an agricultural work machine while spraying fertilizer or the like on the field. Also, by mounting the spreading device on the quick coupler, the moment weight is reduced by the weight of the spreading device.

(Examples) Examples of the present invention will be described below with reference to the accompanying drawings.

In the embodiment shown in FIGS. 1 and 2, reference numeral 1 is a quick coupler, which has a connecting frame 2 formed in a mountain shape, and a pair of left and right connecting plates are provided on top of the connecting frame 2. 3 are erected integrally in parallel with each other at a predetermined interval and in parallel with each other, and connecting holes 4 are provided in front of and behind the upper portions of the pair of left and right connecting plates 3 so as to face each other.
Further, a pair of left and right hooks 5 are integrally projecting rearward in parallel on the rear side of the top of the connecting frame 2, and a substantially semicircular shape is formed in the middle upper part of the pair of left and right hooks 5 in the front-rear direction. A locking recess 6 is formed.

Further, a pair of plate-shaped attachments 7 are integrally erected on the left and right portions of the connection frame 2, and a plurality of attachment holes 8 are formed on the left and right attachments 7, respectively.

Further, hitch plates 9 are provided on the lower left and right sides of the connecting frame 2.
Are integrally fixed to each other, and lower pins 10 are horizontally projected from the lower front portions of the left and right hitch plates 9, respectively, and locking recesses are formed at the rear intermediate portions of the left and right hitch plates 9 and open rearward. 11 are formed. A lock arm 14 having a handle 13 is pivotally supported by a support shaft 12 on the upper front side of the left and right hitch plates 9 so as to be vertically rotatable.
The locking projections 15 formed at the rear ends of the left and right lock arms 14 are adapted to project and retract with respect to the openings of the locking recess 11.

In addition, a shaft provided at the upper middle portion of the left and right hitch plates 9
A spring 17 for urging the lock arm 14 is wound around and locked to the lock arm 16, and the locking projections 15 of the left and right lock arms 14 are always locked by the left and right springs 17.
It is designed to project into 11 openings. Reference numeral 18 is a stopper of the lock arm 14.

Support arms 19 project rearward and in parallel at the lower left and right inner sides of the connection frame 2, and a connecting body 20 is provided between the rear ends of the left and right support arms 19 in the vertical and left and right directions. And a spline shaft cylinder 23 of one universal joint 22 of the power transmission shaft 21 is rotatably supported in the connecting body 20.
An insertion port 24 opened to the rear of 23 and a guide port 25 opened to the rear of the connecting body 2 are communicated with each other.

Further, reference numeral 26 is a support frame as an attachment. The support frame 26 is formed to extend in the left-right direction, and a connecting piece 27 that is detachably connected to the left and right attachments 7 is provided on the left and right of an intermediate lower portion thereof. The left and right connecting pieces 27 are integrally projecting parallel to each other, and a plurality of communication holes 28 communicating with the plurality of mounting holes 8 of the left and right attachments 7 are formed at the lower ends of the left and right connecting pieces 27.

In addition, brackets 29 are provided on both left and right sides of the support frame 26.
Are attached so that their positions can be adjusted in the left-right direction, and the left and right brackets 29 are equipped with a spraying device 30 as an agricultural working device for spraying fertilizer, chemical liquids, seeds and the like. The left and right spraying devices 30 are respectively provided at the bottom of the tank 31 with a feeding mechanism 32.
Is formed, a common rotating shaft 34 is rotatably mounted between the supplying parts 33 of the left and right tanks 31, and the left and right supplying mechanisms 32 are linked to the rotating shaft 34. One end of the rotary shaft 34 and an output shaft of an electric motor 35 fixedly supported on one end of the support frame 26 are rotatably and interlocked via an interlocking medium 36. Further, a spray port body 38 is provided under the feeding portion 33 of the left and right tanks 31 via a conduit 37.
Are lined up.

Further, 39 is an agricultural work machine, and this agricultural work machine 39 has a main body frame 40, and an input shaft 41 is provided at an intermediate portion of the main body frame 40.
Is provided with a mission 42 rotatably protruding toward the front, and a rotary working body 44 is rotatably provided between the chain case 43, which is disposed and fixed facing the left and right sides thereof, and the lower end portion of the bracket. Lower arms 46 each having a lower connecting pin 45 at its tip end project forward from the left and right parts of the body frame 40, and a mast 47 projects forward from the upper part of the mission 42. The upper connecting pin 48 is attached to the tip of the mast 47. In addition, 49 is a cover body and 50 is a leveling body.

Further, 51 is an agricultural tractor. This agricultural tractor 51 has a top link 54 and left and right lower links that are vertically rotatable at the rear of a tractor body 53 that has wheels 52 rotatably mounted on it.
55 is provided, and a lift mechanism 56 is provided. Further, a power take-off shaft 57 is rotatably projected rearward from the rear portion of the tractor body 53.

Next, the operation of the above embodiment will be described.

At the rear end of the top link 54 of the agricultural tractor 51, a pair of left and right connecting plates 3 of the connecting frame 2 are provided with connecting holes 4 and connecting pins.
The lower pins 10 on the lower left and right sides of the connecting frame 2 are connected to the lower links 55 on the left and right of the agricultural tractor 51 while being connected via 58. In addition, the power takeoff shaft 57 of the agricultural tractor 51
One universal joint 22 on the connecting frame 2
The spline shaft cylinder 23 of the other universal joint 59 of the power transmission shaft 21 on which is supported is spline-fitted and connected. As a result, the quick coupler 1 is connected to the three-point link mechanism of the agricultural tractor 51, and the power transmission shaft 21 is connected between the agricultural tractor 51 and the quick coupler 1.

Next, the left and right attachments 7 of the connection frame 2 of the quick coupler 1 are superposed on the left and right attachments 7 of the support frame 26 having the spraying device 30 on the left and right, and the left and right attachments 7 and the left and right attachments 27 are combined. Are connected and fixed by bolts and nuts 61 inserted through the plurality of mounting holes 8 and the plurality of communication holes 28 communicating with the mounting holes 8. As a result, the left and right spraying devices 30 are connected and supported to the left and right attachments 7 of the quick coupler 1 via the support frame 26.

Next, when the agricultural tractor 51 is arranged in the front part of the agricultural work machine 39 and the three-point link mechanism of the agricultural tractor 51 is rotated upward by the lift mechanism 56, the pair of left and right hooks 5 in the connecting frame 2 of the quick coupler 11 is released. Farm work machine
The upper connecting pin 48 is engaged with the upper connecting pin 48 of the mast 47 of 39, and the upper connecting pin 48 engages with the locking recess 6 of the pair of hooks 5.
Locked inside.

Further, when the quick coupler 1 is further rotated upward by the three-point link mechanism, the farm work machine 39 is lifted by the pair of hooks 5 via the upper connecting pin 48, and the farm work machine 39 is pulled to the farm tractor 51 side. The left and right lower connecting pins 45 of the agricultural working machine 39 are brought into contact with the locking projections 15 of the lock arm 14, and the left and right lower connecting pins are pulled together.
45 pushes up the lock arm 14 against the spring 17 and fits into the locking recesses 11 of the left and right hitch plates 9. Further, the left and right lower connecting pins 45 are fitted in the left and right locking recesses 11, and the left and right lock arms 14 are returned and rotated by the springs 17, and the locking projections 15 thereof are set in the locking recesses 11. Then, the left and right lower connecting pins 45 are locked by the left and right locking projections 15.

Further, almost at the same time that the three-point connecting portion of the agricultural machine 39 is connected to the three-point connecting portion of the quick coupler 1, the input shaft 41 is provided in the guide port 25 in the spline shaft cylinder 23 of the connecting body 20 of the quick coupler 1. And, it is inserted through the insertion port 24 and automatically spline-fitted. As a result, the agricultural work machine 39 is automatically connected to the point link mechanism of the agricultural tractor 51 via the quick coupler 1 equipped with the spraying device 30, and the power takeoff shaft 57 of the agricultural tractor 51 is connected to the power transmission shaft 21. The input shaft 41 of the agricultural work machine 39 is automatically interlocked and connected.

Next, while the agricultural work machine 39 is towed by the agricultural tractor 51, the power transmission shaft 57 is transferred from the power output shaft 57 of the agricultural tractor 51.
While transmitting power to the input shaft 41 via 21, the rotary work body 44 is rotationally driven via the mission 42 and the output shaft of this mission 42, and the cultivated soil is advanced while being cultivated by the rotary work body 44. .

Further, when the electric motor 35 is driven during this cultivating and crushing soil work, the rotary shaft 34 of the left and right spraying devices 30 is rotated by this drive shaft via the interlocking medium 36, and the rotary shaft 34 feeds the left and right tanks 31. The feeding mechanism 32 in 33 is rotated. Also, when the left and right feeding mechanisms 32 are rotated, the left and right tanks are
Dispersed substances such as fertilizers, seeds, and liquid medicines stored in 31 are sequentially delivered from the delivery unit 33, and are also sequentially delivered to the field from the application mouth 38 through the conduit 37. In this case, by moving and setting one or both of the left and right spraying devices 30 along the support frame 26, the spraying area of the sprayed material is set to the front stroke side, the rear stroke side, or the cultivated soil in progress of the cultivated soil. It is progressed by spraying in advance.
Therefore, the combined work is performed by the rotary work unit 44 and the left and right spraying devices 30 during one stroke.

The sprayed materials stored in the left and right tanks 31 may be the same on the left and right, or may be different. Further, the left and right spraying devices 30, one may be used separately for the front stroke side portion and the other for the traveling stroke, and one may be separately used for the traveling stroke and the other for the rear stroke side portion. Both may be used for travel.

Next, the embodiment shown in FIGS. 3 and 4 will be described.

In this embodiment, in the coupling frame 2 of the quick coupler 1, a substantially U-shaped attachment 65 having an upward opening is fixed to the left and right portions of the connecting frame 2 at the same level. These left and right attachments 65 are
A locking portion 67 of a size that fits the support frame 26 is formed by the front and rear locking pieces 66, and a locking pin 68 is removably inserted into the upper end of the front and rear locking pieces 66. Insertion holes 69 are formed so as to face each other, and a guide piece 70 is formed on the upper end portion of the locking piece 66 on the rear side so as to widen rearward.

Further, the upper part of a stand 72 having a landing plate 71 at the lower end is detachably attached to both ends of the support frame 26 on which the spraying devices 30 are mounted on the left and right, and the support frame 26 is provided for connection by the left and right stands 72. To support it.

With this configuration, when the quick coupler 1 is rotated upward by the three-point link mechanism of the agricultural tractor 51 as in the case of the above-described embodiment, the left and right U-shaped attachments 65 of the connecting frame 2 are inserted. Left and right stand 72
The left and right sides of the support frame 26 supported by the are fitted and automatically suspended. Further, the locking pin 68 is inserted and locked in the insertion holes 69 of the left and right attachments 65 to lock the same. As a result, the attachment to the quick coupler 1
The spraying device 30 is connected and supported via the 65 and the support frame 26.

Also, if necessary, a support frame
Remove the left and right stands 72 from 26. Then, as in the case of the above-described embodiment, the left and right spraying devices 30 and the rotary working body 44
Combined work can be performed by and.

Further, the embodiment shown in FIGS. 5 and 6 will be described.

In this embodiment, a container cradle 73 as an attachment is detachably attached to the left and right attachments 7 of the connecting frame 2 of the quick coupler 1 in the case of the first embodiment shown in FIGS. 1 and 2. A planting machine 74 for planting a planting material such as konjac potato as an agricultural working machine is connected to the three-point connection portion of the quick coupler 1. In this case, the container pedestal 73 has a support frame 75 projecting from the lower left and right sides, and a plurality of communication holes 76 communicating with the plurality of mounting holes 8 of the left and right attachments 7 at the lower ends of the left and right support frames 75. The connecting pieces 77 are respectively projected.

Then, the left and right attachment pieces 7 are overlapped with the left and right connection pieces 77, and the left and right attachment pieces 7 and the left and right connection pieces 77 are inserted into the respective attachment holes 8 and the communication holes 76 and are connected by a plurality of bolts and nuts 78. By supporting the container 79, a container 79 as an agricultural working device in which the plant a such as konjac potato is stored is placed on the container support 73.

In addition, the planting machine 74 has a ground drive wheel 81 attached to the body frame 80.
And a planting conveyor 82 which is rotated by the power of the ground drive wheel 81 so as to be rotatable in the vertical direction via a plurality of guide wheels 83 provided on the main body frame 80. , A grooved body on the lower front side of the body frame 80
84 is provided.

With this configuration, the operator on the planting machine 74 sequentially supplies the planting a in the container 79 to the planting conveyor 82, and the planting a is rotated by the ground drive wheel 81. It is moved downward by the planting conveyor 82 which is rotated by motion. Then, the plant a is sequentially planted in the planting groove formed by the grooved body 84. Therefore, by supporting the container 79 accommodating the plant a with the quick coupler 1 via the container support 73, the planting work of the plant a can be easily performed.

(Effects of the Invention) According to the present invention, a quick coupler for connecting an agricultural work machine to an agricultural tractor is provided, and the quick coupler is integrally provided on both side portions of the connection frame formed in a mountain shape. Since it has a pair of attachments to which agricultural equipment such as a spraying device is detachably attached,
You can easily attach various agricultural equipment such as a spraying device for spraying fertilizers, chemicals, seeds, etc. to a pair of quick coupler attachments, and a quick coupler compared to a quick coupler that simply connects an agricultural work machine to an agricultural tractor. This quick coupler can be used to enable complex work with an agricultural work machine, and this combined agricultural work equipment can be used to provide a moment weight without providing a front weight on the agricultural tractor. Can be reduced.

Also, since a pair of attachments are integrally provided on both sides of the connecting frame, the pair of attachments on both sides can stably support the agricultural work equipment, and the agricultural work equipment can balance the weight of the quick coupler. Can be prevented from shifting to one side.

Furthermore, since the agricultural work equipment can be attached to the quick coupler between the agricultural tractor and the agricultural work machine, this agricultural work equipment does not increase the total length or the headland and does not change the direction during work. It can be prevented from becoming messy.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a side view showing a state in which an agricultural work machine is connected to an agricultural tractor, and FIG. 2 is a perspective view showing a state in which the quick coupler and the work machine are separated from each other.
FIG. 4 is a side view of a coupling device showing another embodiment, FIG. 4 is a perspective view of the coupling device shown in FIG. 4 in the separated state, FIG. 5 is a side view of the coupling device shown in yet another embodiment, and FIG. It is a perspective view. 1 ... Quick coupler, 2 ... Connection frame, 7,65,
...... Attachments, 39,74 …… Agricultural work machines, 51 …… Agricultural tractors, 30,79 …… Agricultural work equipment.

Claims (1)

[Claims] 1. A quick coupler for connecting an agricultural work machine to an agricultural tractor, wherein the quick coupler is a mountain-shaped connecting frame and is provided integrally on both sides of the connecting frame for agricultural work such as a spraying device. An agricultural machine coupling device comprising: a pair of attachments for detachably attaching a device.