JPH0923720A - Electric wiring apparatus in agricultural machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform efficient repair by exchanging only a small part where line breakage occurs in a wire harness extending toward a working machine located at the back side of a running machine body. SOLUTION: In an agricultural machine, a working machine C is linked at the back of a running machine body A through a three-point link mechanism B in a freely liftable manner, and at the same time, a wire harness is extended from the running machine A-side to the working machine C-side along the side of one 1a of the lower links of the three-point link mechanism B. Couplers 4a are respectively connected to front and back sides of a middle wire harness 3a placed at a lateral face of a rotation fulcrum 2 where the lower link 1a is bent, and at the same time, the middle wire harness 3a is made to be changeable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wiring device for an agricultural machine for electric wiring of a wire harness from a traveling main machine side to a working machine side behind.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 5 to 8, a working machine C is movably connected to a rear side of a traveling main machine A via a three-point link mechanism B and one side of the three-point link mechanism B is connected. Along a lateral side of the lower link 1a, an agricultural machine constructed by extending a wire harness from the main machine A side to the working machine C side extends from the working machine C side to a lateral side in the middle of the lower link 1a. The working machine side wire harness 3e to be output is connected by a wire band 5 and extends from the rear part of the traveling machine A along the lateral side of the front rotation fulcrum 2 of the lower link 1a. The electrical wiring is such that the rear end of the side wire harness 3d is connected to the front end of the wire harness 3e via the coupler 4c.

[0003]

However, when the working machine is moved up and down, the portion of the wire harness 3d along the lateral side of the rotation fulcrum 2 of the lower link 1a bends each time, so that the wire harness 3d. Internal disconnection occurs frequently, and when this occurs, it is difficult to find the location of the disconnection, and it is difficult and troublesome to work poorly, and even when repairing, the entire wire harness on the traveling machine side and the working machine side is updated. It becomes necessary to do so, and the cost and man-hours become great, and due to only one internal disconnection, it takes a lot of money, time and man-hours until the machine can start working again. There was a problem that the efficiency also dropped significantly.

[0004]

SUMMARY OF THE INVENTION The present invention solves such a problem and enables effective repair by exchanging only a portion of a wire harness where a wire breakage occurs. The work machine is connected to the rear side via the three-point link mechanism so that it can be moved up and down, and the wire harness is extended from the machine side to the work machine side along one side of the lower link of the three-point link mechanism. In the agricultural machine configured as described above, a coupler is connected to each of the front and rear of an intermediate wire harness located laterally of a rotation fulcrum, which is a bending portion of the lower link, and the intermediate wire harness is replaceable. It was done.

[0005]

Therefore, every time the working machine is moved up and down, the portion of the intermediate wire harness along the lateral side of the rotation fulcrum of the lower link is bent, and the internal disconnection of the wire harness is caused by this intermediate wire harness. In such a case, by removing only the intermediate wire harness from the front and rear couplers and replacing it with a new intermediate wire harness, it is possible to quickly and easily trouble the electric wiring from the traveling machine to the working machine side. Can be easily repaired with.

[0006]

1 to 4 show an embodiment of the present invention, and FIGS. 1 and 2 show a side view and a plan view of a riding rice transplanter, which is an agricultural machine, respectively. ,
Equipped with both front wheels 6, both rear wheels 7, handle 8, seat 9, etc., the working machine C, which is a planting section, is equipped with a seedling stand 10, each rotary type planting claw 11, each float 12, etc., Behind the traveling main body A, the working machine C of the planting section is connected via a three-point link mechanism B composed of both left and right lower links 1a and 1b and an upper top link 1c, and the traveling main body A is connected. The work machine C can be moved up and down by operating the hydraulic cylinder 13 on the side, and the work machine C is constructed in the same manner as the conventional structure.

Electrical wiring of a wire harness is provided between the rear portion of the traveling main body A and the working machine C, which is a planting portion, as in the conventional case, but from the rear portion of the traveling main body A, the left lower link 1a is provided. The wire harness 3b on the traveling machine side is extended to the front direction of the turning fulcrum 2 on the front side of the work machine, and the work machine side wire is extended from the front part of the work machine C to the lateral direction in the middle of the lower link 1a. While extending the harness 3c, the front part of the wire harness 3c is connected to the lower link 1a by the wire band 5, and is laterally lateral to the front rotation fulcrum 2 which is a bent portion of the lower link 1a. The front and rear ends of the intermediate wire harness 3a to be positioned are coupled to the rear end of the traveling main unit side wire harness 3b and the front end of the working machine side wire harness 3c, respectively.
The intermediate wire harness 3a is connected to the intermediate wire harness 3a by a new one so as to be replaceable.

The wire harness portion, which is located laterally to the rearward rotating fulcrum 2a, which is the bending portion of the lower link 1a, has the couplers 4a and 4b at the front and rear as in the above embodiment. Alternatively, the intermediate wire harness 3a may be connected, or the traveling machine may be an agricultural tractor and the working machine may be, for example, a rotary working machine, which is electrically wired as in the above embodiment.

Therefore, during work, the working machine C is frequently moved up and down, and the portion of the intermediate wire harness 3a along the lateral side of the rotation fulcrum 2 of the lower link 1a bends each time. Therefore, the internal disconnection of the wire harness is due to this intermediate wire harness 3
It will always occur in a. In that case, remove only the intermediate wire 3a from the front and rear couplers 4a, 4b,
By replacing the intermediate wiring harness 3a with a new one, it is possible to quickly and easily and easily repair the failure of the electric wiring due to the wiring harness from the traveling main unit A to the working unit C side.

[0010]

As described above, according to the present invention, every time the working machine C is moved up and down, the portion of the intermediate wire harness 3a along the lateral side of the rotation fulcrum 2 of the lower link 1a is bent. Internal disconnection of the wire harness will always occur in the intermediate wire harness 3a. In that case, only the intermediate wire harness 3a is removed from the front and rear couplers 4a and 4b, and the new intermediate wire harness 3a is removed.
By replacing it with a new one, it becomes possible to quickly and easily and easily repair the failure of the electric wiring from the traveling machine A to the working machine C side, and it is possible to reduce the number of man-hours and the time for repairing by looking for the disconnection point, and Since it is not necessary to replace the entire wire harness from the machine A side to the working machine C side, the cost, man-hours, and time can be significantly reduced, which is a feature that can be suitably implemented.

[Brief description of drawings]

FIG. 1 is a side view showing a riding rice transplanter according to an embodiment of the present invention.

FIG. 2 is a plan view schematically showing the upper surface of FIG.

FIG. 3 is a side view showing a main part of the embodiment of the present invention.

FIG. 4 is a plan view showing a part of FIG. 3;

FIG. 5 is a side view showing a conventional riding rice transplanter.

6 is a plan view schematically showing the upper surface of FIG.

FIG. 7 is an enlarged side view of a part of FIG. 5;

FIG. 8 is a plan view showing a part of FIG. 7;

[Explanation of symbols]

 A traveling main machine B three-point link mechanism C working machine 1a lower link 2 turning fulcrum 3a intermediate wire harness 4a, 4b coupler

Claims (1)

[Claims] 1. A work machine C is movably connected to the rear of the traveling machine A via a three-point link mechanism B, and travels along a lateral side of one side lower link 1a of the three-point link mechanism B. In the agricultural machine configured by extending the wire harness from the machine A side to the working machine C side, the lower link 1
The couplers 4a, 4 are provided before and after the intermediate wire harness 3a, which is located on the lateral side of the rotation fulcrum 2 which is a bent portion of a.
An electric wiring device, characterized in that the intermediate wire harness 3a is configured to be replaceable while connecting the respective b.