JPH0543608Y2 - - Google Patents

Description

[Detailed description of the invention] "Field of industrial application" This invention supports a pest control machine etc. on a tractor etc. through a top link and a lower link, and also allows the pest control machine to be constantly supported when the machine is tilted from side to side. The present invention relates to a horizontal control device for an agricultural machine in which a horizontal control member for maintaining left and right horizontality is attached to a lower link.

"Conventional Technology" Conventionally, there was a technology in which a tractor was equipped with a pest control machine and a boom was extended from the machine to spray a chemical solution.

"Problem to be solved by the invention" The above-mentioned conventional technology has problems such as when the pest control machine is horizontally controlled to correct the support posture, the boom of the pest control machine comes into contact with the field, etc., and the boom is likely to be damaged. It was hot.

``Means for Solving the Problems'' However, the present invention allows a traveling vehicle to support an agricultural machine having a working means that is vertically adjustable via a traction link, and also allows the agricultural machine to be raised and lowered from side to side. In the structure in which the towing link is provided with a horizontal control member for horizontal control, a horizontal control detection member for detecting horizontal control of the agricultural working machine is provided, and the detection member is interlocked with a vertical adjustment member for vertically adjusting the working means. By adjusting the working means up and down in conjunction with the horizontal control operation of the agricultural machine, for example, in a pest control machine, the main body of the pest control machine, such as a chemical solution pump, can be horizontally controlled in response to the inclination of a traveling vehicle corresponding to the inclination of a field scene. In this case, it is possible to solve the conventional problem of bringing the long boom of the pest control machine into contact with the field, and it is possible to support the agricultural machine and the working means on the traveling vehicle in the optimal condition, and to do so in a good and safe manner. It is possible to perform various types of agricultural work.

"Embodiments" Examples of the present invention will be described below in detail based on the drawings. FIG. 1 is a side view of the whole, and FIG. 2 is a plan view of the same, in which 1 is a tractor as a running vehicle, 2 is a body frame equipped with front and rear wheels 3 and 4, and 5 is an engine 6 attached to the body frame 1. Engine section to be installed, 7
11 is a PTO transmission unit; 12 is a PTO rear transmission housing; 11 is a PTO transmission unit;
Reference numeral 13 denotes a hydraulic lift equipped with a lift arm 14 for raising and lowering the work equipment; 15 denotes a pest control machine which is an agricultural work machine that is connected to the rear of the tractor 1 so as to be able to rise and lower through a top link 16 and a lower link 17 which are towing links;
8 is a pest control machine frame equipped with a chemical pump 19 and a spray pipe 20, etc.; 21 is a boom that is a working means that supports the spray pipe 20 in a foldable manner; 22;
23 is a chemical tank mounted on the vehicle body frame 2.

Further, as shown in FIGS. 3 and 4, a hydraulic cylinder 25 and a turnbuckle 26, which are horizontal control members, are interposed between the left and right lift rods 24a and 24b that connect the left and right lift arms 14 and the left and right lower links 17 and 17, respectively. , when a tilt sensor 27 installed in the pest control machine 15 detects a horizontal inclination of the machine 15, the hydraulic cylinder 25 is expanded and contracted to swing only the left lower link 17 to keep the pest control machine 15 horizontally horizontal. are doing. In addition, another hydraulic cylinder 28, which is a horizontal control detection member of the pest control machine 15, is connected between the left lift arm 14 and the left lower link 17 in parallel with the hydraulic cylinder 25.
9, so that when the hydraulic cylinder 25 expands and contracts and the pest control machine 15 performs a horizontal control operation, the one hydraulic cylinder 28 is caused to expand and contract in conjunction with this.

Furthermore, as shown in FIG. 4 and FIG.
1, and when the piston rod 33 of the hydraulic cylinder 32, which is fixed to the frame 18, is extended or contracted, a rack 34 fixed to the tip of the rod 33 and a pinion gear 3 fixed to the fulcrum shaft 31 are connected.
5, the boom mounting member 30 is attached to the second
It is configured to rotate in the direction of the solid arrow in the figure (left and right horizontal directions). Further, a longitudinally rotating member 36 is interposed between the mounting member 30 and the boom 21, and the rotating member 36 is connected to the distal end of the mounting member 30 via a longitudinally rotating fulcrum shaft 37 and a hydraulic cylinder 38. The boom 21 is supported so that the boom 21 can be rotated in the front-rear horizontal direction via the rotation member 36 as the cylinder 38 expands and contracts. Furthermore, the base end attachment portion 21a of the boom 21 is supported by the rotation member 36 via the vertical movement fulcrum shaft 39 and the hydraulic cylinder 40 which is the vertical adjustment member.
The boom 21 is configured to rotate in the vertical direction by expanding and contracting. In addition, 41 is PTO transmission shaft 4
2 and the chemical liquid pump 19 via the pest control input shaft 43.
This is the PTO output shaft that drives the

As shown in FIG. 6, the hydraulic cylinder 40 for vertically operating the boom 21 is connected to a hydraulic pump 45 via a 3-position, 4-port manual switching valve 44.
The hydraulic cylinder 40 is connected to the hydraulic cylinder 28 for horizontal control detection via a 3-position, 4-port manual switching valve 46 and a 2-position, 4-port manual switching valve 47 that operate in conjunction with the switching valve 44, and the pump 45 When the oil supply to the hydraulic cylinder 40 is cut off, the cylinders 28 and 40 are connected to each other through the switching valves 46 and 47, and when the oil is supplied to the hydraulic cylinder 40, the cylinders 28 and 40 are connected to each other through the switching valves 46 and 47. , 40 are configured to be cut off by a switching valve 46. Note that each cylinder 28, 4
0 uses the same size (same stroke).

This embodiment is configured as described above, and when performing pest control work on a slope as shown in Fig. 5,
The tilt sensor 27 detects the tilt of the aircraft body to horizontally control the pest control machine 15, that is, the pest control frame 18, and when the hydraulic cylinder 25 is extended to control the clockwise rotation of the pest control frame 18 with respect to the aircraft body, By detecting the hydraulic cylinder 28, feedback is given to the hydraulic cylinder 40 according to the amount of movement thereof, and the hydraulic cylinder 28 extends in the same manner as the cylinder 25, and rotates around the fulcrum shaft 39. The boom 21 is raised in the direction of the solid arrow in FIG. 6, and the support angle of the boom 21 is adjusted so that it is approximately parallel to the sloping ground.

On the other hand, on a slope opposite to that described above, the cylinders 25 and 28 are retracted to lower the boom 21 in the direction of the dashed arrow in FIG. 6 to keep the boom 21 substantially parallel to the slope.

Furthermore, as shown in the imaginary line in Fig. 5, the boom 2 is moved to the left direction opposite to the right direction mentioned above on the slope.
When performing work with the cylinder 1 protruding, the vertical movement of the boom 21 is reversed, so the hydraulic switching valve 47 is switched in the direction of the solid line arrow in FIG. cylinder 4
0 and performs control to lower the boom 21 in the direction of the broken line arrow in the figure.

"Effects of the Invention" As is clear from the above embodiments, the present invention provides an agricultural working machine 1 having a working means 21 vertically adjustable and supported by a traveling vehicle 1 via traction links 16 and 17.
In the structure in which the traction links 16 and 17 are provided with a horizontal control member 25 that supports the farm work machine 15 in a vertically movable manner and horizontally controls the farm work machine 15, the horizontal control detection member 28 detects the horizontal control of the farm work machine 15. , the vertical adjustment member 40 for vertically adjusting the working means 21 and the detecting member 28 are interlocked and connected, and the working means 21 is also adjusted vertically in conjunction with this during the horizontal control operation of the agricultural working machine 15, for example. In the pest control machine 15, the chemical solution pump 19
If the main body of the pest control machine 15 is controlled horizontally, the conventional problem of making the long boom 21 of the pest control machine 15 come into contact with the field can be solved, and the agricultural machine 1
5 and the working means 21 can be individually supported on the traveling vehicle 1 in an optimal state, and various agricultural works can be performed satisfactorily and safely.

[Brief explanation of the drawing]

Fig. 1 is an overall side view showing one embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is an enlarged side view of the main parts, Fig. 4 is an explanatory diagram of the same system, and Fig. 5 is the same. The operation explanatory diagram, FIG. 6, is a hydraulic circuit diagram of the same. 1...Tractor (driving vehicle), 15...Best control machine (agricultural machine), 16...Top link (traction link), 17...Lower link (traction link), 21...
Boom (working means), 25... Hydraulic cylinder (horizontal control member), 28... Hydraulic cylinder (horizontal control detection member), 40... Hydraulic cylinder (vertical adjustment member).

Claims (1)

[Scope of utility model registration request] A horizontal control member 25 that allows the traveling vehicle 1 to support the agricultural working machine 15 having the working means 21 that is vertically adjustable via the traction links 16 and 17 in a vertically adjustable manner and controls the agricultural working machine 15 horizontally and horizontally.
In the structure in which the towing links 16 and 17 are provided with a horizontal control detection member 28 for detecting horizontal control of the agricultural working machine 15, a vertical adjustment member 40 for vertically adjusting the working means 21 and the detection member 28 are provided.
2. A horizontal control device for an agricultural working machine, characterized in that the working means 21 is interlocked and connected to each other, and the working means 21 is also adjusted up and down in conjunction with the horizontal control operation of the agricultural working machine 15.