JPH0767406A - Farm working apparatus - Google Patents

Abstract

PURPOSE:To provide a system to easily keep a cable constantly at or above a specific level in the supply of electric power through the cable to an automatic farm working machine on a field. CONSTITUTION:This farm working apparatus is provided with a pair of slider units 12a, 12b mounted on monorails 11a, 11b extending at both sides of a field and performs the farm work by alternately pulling a truck 13 holding a farm working tool. A wire is stretched between two slider units 12a and 12b. A power cable 2 is suspended from the wire 1 with suspension tools 3. A roller 4 is attached to the truck 13 at a proper height and the wire 1 is supported by the roller 4. The roller 4 revolves according to the traveling of the truck 13 to decrease the sagging of the supported wire 1 near the truck 13.

Description

Detailed Description of the Invention

[Field of Industrial Application] The present invention relates to an agricultural working apparatus for automating various agricultural works in a field.

[Prior Art] As a method of supplying electric power to a moving body, there is a method of attaching a hanging metal fitting to a flexible electric power cable such as a captyre cable at appropriate intervals and suspending it from an overhead wire under tension. With the movement of the moving body,
The spacing between the hanging brackets increases or decreases. This method is simple, low-cost, and has few failures, but when the cable length becomes long, there are the following problems. During the return stroke of the moving body, a large amount of slack electric power cables are collected immediately before the moving body, and a large concentrated load is applied to the overhead line to increase slack in the overhead line. The slack of the power cable and the slack of the overhead wire are combined to greatly increase the amount of sag of the power cable. In particular, when the distance between supporting overhead lines is long, the influence is great. When a mobile comes to the top, all the slack power cables are gathered just before the mobile, requiring a large space.

[Object of the Invention] In view of the above problems, the present invention (1) rides on monorails installed on both sides of a field and synchronously moves and stops by a working width, and a set of two slider units In an agricultural work device that performs agricultural work by pulling a bogie to which a work implement is attached and reciprocating between the two, keep the power cable suspended on an overhead wire stretched between two slider units at a certain height or more at all times. The purpose is to be able to. The height above the ground of the power cable in this farm work equipment must be higher than a certain height in order to avoid contact with crops. On the other hand, between the two slider units is 70-100
It is a very long distance of m, and the mounting height of the overhead wire for suspending the power cable and the overhead wire tension cannot be too large. Increasing these increases the load on the slider unit and the load on the monorail, which is a major factor in increasing the cost.

A further object (2) is that, when a power cable is connected between two slider units via a carriage, the carriage makes a round trip and comes to each slider unit, in front of the carriage, or The purpose is to secure a place for accommodating power cables that are concentrated in a slack state alternately afterwards.

[Structure of the Invention]
Between two slider units with a distance of 00m, one slider unit is connected to the traveling carriage and the other slider unit to connect the power cable, and the method for keeping the power cable at a certain height or more is earnestly studied. As a result of repeating the above, the present invention was devised. That is, the invention according to claim 1 (hereinafter, referred to as the present invention (1)) for achieving the above-mentioned object (1) rides on monorails installed on both sides of a field, and synchronously moves and stops by a working width. In an agricultural work device that performs agricultural work while a carriage to which a working tool is attached is towed between a pair of two slider units, the power cable and the signal cable stretched between the two slider units are suspended. It is an agricultural working device characterized in that the carriage is made to travel while supporting the overhead wire by rollers or sliders attached to the carriage.

The present invention () will be described in detail below with reference to the drawings. FIG. 1 shows an embodiment of the present invention. In FIG. 1, the overhead wire 1 is stretched between two slider units 12a and 12b mounted on the monorails 11a and 11b. The power cable 2 is suspended from the overhead wire 1 by the suspension fitting 3. The roller 4 is attached to an appropriate height of the carriage 13 which runs while working between the two slider units 12a and 12b, and the overhead wire 1 is supported by the roller 4. As the carriage 13 travels, the rollers 4 support the overhead wire 1 while rotating, so that the slack of the overhead wire 1 near the carriage 13 is reduced.

Claim 2 for achieving the above object (2).
The invention described below (hereinafter referred to as the present invention (2)) is such that a roller or a slider for supporting an overhead wire for suspending an electric power cable or a signal cable can freely move back and forth in the overhead wire direction within a frame attached to a carriage. The device according to claim 1, wherein Hereinafter, the present invention (2) will be described in detail with reference to the drawings. In FIG. 2, the slider unit 1
The power cable 2a connected to 2a and the power cable 2b connected to the slider unit 12b are both connected to the carriage 13. Both the power cables 2a and 2b are suspended on an overhead line 1 stretched between the slider units 12a and 12b. The overhead wire 1 is supported by rollers 4 attached to a traveling carriage 13. Axis 5 of roller 4
Is supported by a guide rod 6 and slides, so that the roller 4 can freely move back and forth in the direction of the catenary.

When the carriage 13 travels, the rollers 4 are pushed to the opposite side in the traveling direction by an overhead wire or an electric power cable. FIG. 2 shows a state of the electric power cable when the carriage 13 is traveling toward the slider unit 12a. In this way, the carriage 13 is moved to the slider unit 1.
The power cable 2a can be accommodated on the carriage 13 when it comes to 2a. On the contrary, when the carriage 13 faces the slider unit 12b, the roller 4 is pushed to the opposite side in the traveling direction, so that the power cable 2b is not moved above the carriage 13 even when the carriage 13 reaches the slider unit 12b. Can be housed in

[Effects of the Present Invention] The effects of the present invention (1) are as follows. By supporting the overhead wire with rollers attached to the carriage, it is possible to eliminate the slack of the overhead wire near the carriage or to lift it further, and the sag of the power cable near the carriage is only the amount of slack of the power cable. The power cable becomes slack in the vicinity of the slider unit and the carriage, so in order to keep the power cable above a certain height at all times, the amount of slack in the power cable near the slider unit and the carriage or the power cable It is sufficient to consider whether or not the amount of slack in the overhead wire when the load is extended and a substantially even load is applied to the overhead wire. That is, it is possible to eliminate the state in which the large slack of the overhead wire and the slack of the power cable overlap each other, and it is possible to significantly reduce the overhead wire mounting height and the overhead wire tension.

For example, the distance between the slider units, which is the distance between supporting overhead lines, is 100 m, the total mass of the power cable and overhead wire is 0.5 kg / m, the maximum slack amount of the power cable is 1.0 m, and the ground of the power cable is above ground. Minimum height is 1.
Set to 0m. Under such conditions, when the present invention (1) is applied and the overhead wire is supported by the rollers attached to the carriage, the overhead wire installation height is 2.0 m and the overhead wire tension is 6 kN. On the other hand, when the present invention (1) is not applied, if the overhead wire tension is the same 6 kN, the overhead wire installation height is about 3.6 m. If the installation height of the overhead wire is 2.0 m, the overhead wire tension will be infinite in calculation, and it will be impossible. On the other hand, if the maximum amount of slack in the power cable is limited to 0.7 m, the overhead wire tension is 3
It becomes 0 kN. As described above, the effect of the present invention (1) is very large, and power supply by this method becomes practically possible only after applying the present invention (1).

The effects of the present invention (2) are as follows. When the power cable is connected to the two slider units via the truck, the power cables are alternately collected from the front of the truck and from the back of the truck each time the truck moves back and forth to reach each of the two slider units. Come on. If the roller supporting the overhead line is fixedly attached to the trolley, only a half of the length of the trolley can accommodate the power cable on the trolley. By applying the present invention (2) so that the roller can freely move back and forth, no matter which slider unit the dolly comes to,
There will be a place for accommodating the power cable at a length of the trolley. According to the present invention (2), it is not necessary to provide a place for accommodating the power cable in the slider unit or between the slider unit and the carriage. For this reason, the depth of the slider unit can be reduced, the cart can run to a position where it comes into contact with the slider unit, and automatic work can be performed, so that a dead space for automatic farming work can be prevented.

[0012]

[Brief description of drawings]

FIG. 1 is a perspective view of the present invention (1).

FIG. 2 is a perspective view of the present invention (2).

[0013]

[Explanation of symbols]

 1 Overhead line 2 Power cable 2a, 2b Power cable 3 Hanging metal fitting 4 Roller 5 Axis 6 Guide rod 11a, 11b Monorail 12a, 12b Slider unit 13 Truck

Claims (2)

[Claims] 1. A monorail installed on both sides of a field, two trucks each having two working units synchronized with each other and repeatedly moving and stopping in a working width, are pulled together by a truck to which a working implement is attached and reciprocated. An agricultural work apparatus for performing agricultural work is characterized in that a carriage runs while supporting an overhead wire extending between two slider units for suspending an electric power cable and a signal cable with a roller or a slider attached to the carriage. Farm work equipment. 2. The device according to claim 1, wherein a roller or a slider for supporting an overhead wire for suspending the power cable or the signal cable is allowed to freely move back and forth within a frame attached to the carriage in the overhead wire direction.