JP2022061341A - Overhead power-line utilization system - Google Patents

Abstract

To provide a technique capable of reducing a load on a work rope for an overhead power-line utilization system.SOLUTION: An overhead power-line utilization system 1 comprises: multiple wire poles; a main rope supported by the wire poles and with both ends fixed; a moving device movably installed along the main rope; a work rope connected to the moving device; a hoisting device 24 capable of hoisting the work rope; a suspending device 18 connected to the work rope and capable of moving in the air by winding the work rope with the hoisting device 24; a gripping device 19 suspended by the suspending device 18; and a power supply device 28 provided on the moving device and supplying power to the gripping device 19.SELECTED DRAWING: Figure 1

Description

The present invention relates to a technique for moving an operating device suspended from an overhead wire by using an overhead wire.

Patent Document 1 discloses a thinned wood transport system that transports thinned wood from a logging position to a unloading position. This thinned material transport system includes a tower yarder located near the unloading position on the work road, a first winch provided in the tower yarder for winding the first wire, and a second winch provided in the tower yarder for winding the second wire. A winch, a plurality of pulleys connected in the middle of the traveling path of the second wire and changing the traveling direction of the second wire, a loading tool for hanging thinning material, and a loading tool connected in the middle of the traveling path of the loading tool. It is equipped with a plurality of zigzag pulleys that change the traveling direction of the loader.

Japanese Unexamined Patent Publication No. 2008-109918

In the overhead wire utilization system, a main rope having both ends fixed to a support and a work rope supported by the main rope are used, and an operating device suspended from the work rope is moved by winding or unwinding the work rope. When the load applied to the work rope is increased, the diameter and weight of the work rope are increased, and the device for winding the work rope becomes high output and is costly.

An object of the present invention is to provide a technique for reducing a load applied to a work rope in an overhead wire utilization system.

In order to solve the above problems, the overhead wire utilization system according to an aspect of the present invention includes a plurality of columns, a main rope supported by the columns and fixed at both ends, and a moving device movably provided along the main rope. A work rope connected to a mobile device, a hoisting device capable of hoisting the work rope, a hanging device connected to the work rope and being wound by the hoisting device to move in the air, and a suspension device. It includes an actuating device suspended from the device and a power supply device provided on the mobile device to supply power to the actuating device.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a technique for reducing a load applied to a work rope in an overhead wire utilization system.

It is a figure for demonstrating the overhead wire utilization system. It is a figure for demonstrating the gripping apparatus which is suspended by the suspension apparatus. It is a figure for demonstrating the 1st mobile apparatus and a power supply apparatus.

FIG. 1 is a diagram for explaining an overhead wire utilization system 1. The overhead wire utilization system 1 includes a first support column 10a, a second support column 10b, a third support column 10c, a fourth support column 10d (referred to as "support column 10" when these are not distinguished), a first main rope 12a, and a second main rope 12b (these are not distinguished). When these are not distinguished, it is called "main rope 12"), the first work rope 14a, the second work rope 14b, the third work rope 14c, and the fourth work rope 14d (when these are not distinguished, it is called "work rope 14"). It includes a first moving device 16a, a second moving device 16b (referred to as "moving device 16" when these are not distinguished), a hanging device 18, a gripping device 19, a guide pulley 22, a hoisting device 24, and a power supply device 28.

The overhead wire utilization system 1 is a so-called H-type overhead wire utilization system in which trees 20 cut down in a forest are lifted by a main rope 12 and a work rope 14 (overhead wire) stretched in the air, and are located near a collecting place 26. It is possible to transport. As a result, the tree 20 can be transported from the forest without creating a road.

The four columns 10 are erected at positions suitable for erection determined based on the arrangement of standing trees and the position of the collecting place 26. The support column 10 is set to a size of about 5 to 10 meters depending on the size of the overhead wire utilization system 1 and the like.

The main rope 12 and the work rope 14 are fixed to the support column 10 as overhead lines or hung on the pulleys of the support column 10. The first main rope 12a is fixed to the first strut 10a and the second strut 10b, and the second main rope 12b is fixed to the third strut 10c and the fourth strut 10d and functions as a rail in the air. The first main rope 12a and the second main rope 12b are provided so as not to intersect each other. The length of the main rope 12 is about 300 to 2000 meters.

The work line 14 functions as a moving line to be wound up by the hoisting device 24, and moves the moving device 16 and the suspending device 18. The first work rope 14a, the second work rope 14b, the third work rope 14c, and the fourth work rope 14d are hung on a pulley provided on the support column 10, one end thereof is connected to the moving device 16, and the other end is a hoisting device. It is connected to 24. The first working rope 14a is connected to the first moving device 16a from the hoisting device 24 via the second support column 10b, the first support column 10a, the first moving device 16a, and the suspending device 18. The second working line 14b is connected to the first moving device 16a from the winding device 24 via the second support column 10b. The third working line 14c is connected from the hoisting device 24 to the second moving device 16b via the fourth support column 10d, the third support column 10c, the second moving device 16b, and the suspending device 18. The fourth working line 14d is connected to the second moving device 16b from the hoisting device 24 via the fourth support column 10d.

The pair of moving devices 16 are supported by the pair of main ropes 12, respectively, and can move along the main ropes 12. The first working line 14a and the second working line 14b are connected to the first moving device 16a, and the third working line 14c and the fourth working line 14d are connected to the second moving device 16b.

The suspending device 18 is connected to the gripping device 19 by a wire for raising and lowering, and suspends the gripping device 19. The suspension device 18 may be provided with a position detection device that detects the position information of the suspension device 18 using a satellite positioning system. The gripping device 19 can grip the tree 20. The guide pulley 22 changes the direction of the hung work rope 14.

The power supply device 28 supplies electric power to the suspending device 18 and the gripping device 19. The power supply device 28 is attached to the moving device 16 and is movably suspended from the main rope 12 via the moving device 16 and moves as the work rope 14 is wound up.

The hoisting device 24 functions as a winch for hoisting each work rope 14, and has a drum and a drive source for hoisting or hoisting each work rope 14.

The operation of the overhead wire utilization system 1 will be described. The winding device 24 moves the first moving device 16a along the first main rope 12a by winding one of the first working rope 14a and the second working rope 14b and winding the other. Further, the winding device 24 moves the second moving device 16b along the second main rope 12b by winding one of the third working rope 14c and the fourth working rope 14d and winding the other. As a result, the suspending device 18 is displaced along the main rope 12.

Next, the movement of the suspending device 18 in the opposite direction of the first main rope 12a and the second main rope 12b will be described. When the hoisting device 24 fixes the second working rope 14b and the fourth working rope 14d, winds one of the first working rope 14a and the second working rope 14b and winds the other, it is suspended from the first moving device 16a. The distance to the device 18 and the distance from the second moving device 16b to the hanging device 18 change, and the hanging device 18 is displaced between the first moving device 16a and the second moving device 16b. As a result, the suspending device 18 can move horizontally in the area surrounded by the four columns 10. In this way, the hoisting device 24 winds the work rope 14 to make the hanging device 18 movable in the horizontal direction in the air.

In the aspect of the overhead wire utilization system 1 shown in FIG. 1, four work ropes 14 are collectively wound by the winding device 24, but the present invention is not limited to this aspect. For example, a winding device for winding one work rope 14 may be provided for each support column 10. As a result, the work rope 14 does not have to be folded back and extended to the hoisting device 24, so that the total length of the work rope 14 can be shortened and the load applied to the support column 10 can be reduced. As described above, the winding device may be integrated or separate.

Since the power supply device 28 is supported by the first main rope 12a, it is possible to avoid giving the load of the power supply device 28 to the suspension device 18, and it is possible to reduce the load applied to the work rope 14.

FIG. 2 is a diagram for explaining a gripping device 19 suspended from the suspending device 18. The gripping device 19 is suspended from the suspending device 18 by the first wire 36.

The gripping device 19 includes an actuator 30, a first gripping portion 32, a second gripping portion 34, a first wire 36, a second wire 40, a first motor 38, and a second motor 42. The actuator 30, the first grip portion 32, the second grip portion 34, the first motor 38, and the second motor 42 can be remotely controlled and are controlled by a control device described later.

One end of the first wire 36 is fixed to the actuator 30, and the other end of the first wire 36 is connected to the actuator 30 so as to be hoistable and unwindable. The first wire 36 is connected to the suspension device 18 via a pulley. The first motor 38 is provided in the actuator 30 and can wind up and down the first wire 36. By driving the first motor 38, the gripping device 19 moves in the vertical direction with respect to the suspending device 18.

The first grip portion 32 and the second grip portion 34 are suspended from the actuator 30 by the second wire 40. One end of the second wire 40 is fixed to the actuator 30, an intermediate portion of the second wire 40 is connected via a pulley 32b provided in the first grip portion 32, and the other end side of the second wire 40 is wound up. And is connected to the actuator 30 so that it can be unwound. The second motor 42 is provided in the actuator 30 and can wind up and down the second wire 40. By driving the second motor 42, the first grip portion 32 moves in the vertical direction with respect to the actuator 30.

The first grip portion 32 has a pair of holding portions 32a and a pulley 32b. The pair of sandwiching portions 32a can be driven so as to be narrowly closed and expanded, and sandwiches the outer peripheral surface of the tree. The pair of sandwiching portions 32a approach the tree in an expanded state and are narrowly closed to sandwich the tree.

The second grip portion 34 is a manipulator and is fixed to the second wire 40. The second grip portion 34 is provided between the actuator 30 and the first grip portion 32, and is located above the first grip portion 32. The second grip portion 34 has a grip portion 34a and an arm portion 34b. The grip portion 34a is located at the tip end portion of the second grip portion 34 and grips the outer peripheral surface of the tree. The arm portion 34b has a plurality of joints and can move in a direction away from the second wire 40 to bring the grip portion 34a closer to the tree. After the grip portion 34a grips the tree, the arm portion 34b contracts to bring the grip portion 34a closer to the second wire 40. As a result, the first grip portion 32 approaches the tree. The first grip portion 32 and the second grip portion 34 can grip the felled trees and transport the trees in the air by hoisting the hoisting device.

The gripping device 19 can move the actuator 30 up and down by driving the first motor 38, and can move the first gripping portion 32 up and down by driving the second motor 42. As a result, the first grip portion 32 and the second grip portion 34 can be gripped at appropriate positions of the tree, respectively.

An electric wire 56 extending from the power supply device 28 is connected to at least one of the suspending device 18 and the gripping device 19 to supply electric power. The electric wire 56 is inserted through an insertion portion 70 provided in the suspending device 18, hangs from the suspending device 18, and is hung on the gripping device 19. The insertion portion 70 functions as a guide for wiring the electric wire 56 to the gripping device 19. The first grip portion 32 and the second grip portion 34 of the grip device 19 are connected to the actuator 30 by an electric wire.

A control device (not shown) that enables remote control of the hoisting device 24, the suspending device 18, and the gripping device 19 is provided in the control room. The hoisting device 24, the suspending device 18, and the gripping device 19 can communicate with the control device. In the gripping device 19, any one of the actuator 30, the first gripping portion 32 and the second gripping portion 34 has a communication function, and the actuator 30, the first gripping portion 32 and the second gripping portion 34 have wired or short-range wireless communication. It may be connected by. In any case, each device of the gripping device 19 can exchange information with the control device.

The control device is provided with an input unit such as a touch panel or a mechanical controller that accepts the operation of a worker. The control for moving the suspending device 18, the control for lowering the gripping device 19, and the control for gripping the second gripping portion 34 on the tree 20 may be executed by a program provided in advance, and the operator operates the control device. May be executed. Further, the control of the overhead wire utilization system 1 may be a combination of the program and the operation of the worker. For example, the control for moving the suspending device 18 may be executed by a program, the control for lowering the gripping device 19 and the control for gripping the second gripping portion 34 by the tree 20 may be executed by the operation of an operator. The worker controls while looking at the image transmitted from the camera provided in the suspending device 18 and the actuator 30 and the like.

FIG. 3 is a diagram for explaining the first mobile device 16a and the power supply device 28. The first moving device 16a is movably provided on the first main rope 12a, and the power supply device 28 is suspended from the first main rope 12a via the first moving device 16a.

The first moving device 16a includes a first fixing portion 60, a second fixing portion 62, a first pulley 64, a second pulley 66, a first frame portion 68a, a second frame portion 68b, a third frame portion 68c, and a fourth frame. It has a part 68d. The power supply device 28 has a support portion 50, a main body portion 52, a winding device 54, and an electric wire 56.

The first moving device 16a is movably provided on the first main rope 12a by a plurality of first pulleys 64. The first main rope 12a functions as a rail for moving the first moving device 16a. The first frame portion 68a horizontally connects a plurality of first pulleys 64 and is placed on the first main rope 12a via the first pulley 64. The first pulley 64 and the first frame portion 68a move on the first main rope 12a.

The second frame portion 68b and the third frame portion 68c are coupled to the first frame portion 68a, and the fourth frame portion 68d is coupled to the second frame portion 68b and the third frame portion 68c. A rectangular frame is formed by the first frame portion 68a, the second frame portion 68b, the third frame portion 68c, and the fourth frame portion 68d.

The second pulley 66 is supported by the third frame portion 68c and engages with the first working rope 14a to change the direction of the first working rope 14a. The third pulley 67 is provided on the suspension device 18 and engages with the first work rope 14a to change the direction of the first work rope 14a.

The first working rope 14a is bent by the second pulley 66 from the direction along the first main rope 12a and extends toward the suspending device 18, and is folded back from the suspending device 18 by the third pulley 67 to the first moving device 16a. It extends toward and is fixed to the first moving device 16a by the first fixing portion 60. The second working line 14b is fixed to the first moving device 16a by the second fixing portion 62. The first fixing portion 60 is a fixed end of the first working rope 14a, and the second fixing portion 62 is a fixed end of the second working rope 14b. As a result, when the first working rope 14a is wound or unwound while the second working rope 14b is fixed, the suspending device 18 approaches or separates from the first moving device 16a. The second moving device 16b has the same configuration as the first moving device 16a.

The support portion 50 connects the first frame portion 68a of the first moving device 16a and the main body portion 52. The main body 52 includes a battery and has a large weight. Since the main body 52 is supported by the first main rope 12a, the load applied to the work rope 14 can be reduced. If the work rope 14 is made thick enough to withstand high tension, there are measures such as increasing the size of the support column 10 and increasing the output of the winding device 24, so that the cost of the overhead wire utilization system 1 is high. By reducing the load applied to the work rope 14, it is possible to reduce the cost of the overhead wire utilization system 1.

An electric wire 56 extends from the main body 52 toward the suspending device 18. The electric wire 56 is inserted into the insertion portion 72 fixed to the first working rope 14a and extends along the first working rope 14a. The insertion portion 72 is provided in the first working line 14a from the third pulley 67 to the first fixing portion 60. That is, the electric wire 56 is wired along the first working cable 14a on the fixed end side.

The take-up device 54 is provided on the main body 52 and can take up the electric wire 56. When the suspending device 18 approaches the first moving device 16a, the electric wire 56 is loosened. Therefore, the winding device 54 can prevent the electric wire 56 from loosening by winding the electric wire 56. The take-up device 54 may have a drum and a power source that take up the electric wire 56 with a predetermined tension. The power source of the take-up device 54 may be a spring member. By winding the electric wire 56 with a spring member, it can be simplified as compared with the case of winding with a motor.

The support portion 50 may have a mechanism for moving the main body portion 52 in the vertical direction. For example, the support portion 50 may be composed of a wire and a motor, and the main body portion 52 may be lowered to the ground by winding down the wire by driving the motor.

The present invention has been described above based on the embodiments. It is understood by those skilled in the art that the embodiments are merely examples, and that various modifications are possible for each component and combination of each processing process, and that such modifications are also within the scope of the present invention.

In the embodiment, the mode in which the gripping device 19 grips the tree is shown, but the mode is not limited to this mode. For example, an inspection device for detecting the state of a tree may be suspended from the suspension device 18. Further, a cutting device for cutting trees may be suspended from the hanging device 18. As described above, the actuating device suspended by the suspending device is not limited to the gripping device 19, but is a device that executes a predetermined operation based on the electric power supplied by the power supply device 28.

Further, in the embodiment, the mode in which the first motor 38 for winding the first wire 36 is provided on the gripping device 19 side is shown, but the mode is not limited to this mode. For example, the suspending device 18 may have a motor that winds up the first wire 36.

1 overhead wire utilization system, 10 stanchions, 12 main ropes, 14 work ropes, 16 moving devices, 18 hanging devices, 19 gripping devices, 22 guide pulleys, 24 hoisting devices, 28 power supply devices, 30 actuators, 32 first gripping parts, 34 2nd grip, 36 1st wire, 38 1st motor, 40 2nd wire, 42 2nd motor.

Claims (1)

With multiple stanchions
A main rope supported by the support and fixed at both ends,
A moving device provided so as to be movable along the main rope,
The work rope connected to the moving device and
A hoisting device capable of hoisting the work rope and
A hanging device that is connected to the work rope and can move in the air by winding the work rope by the hoisting device.
An actuating device suspended from the suspending device and
An overhead wire utilization system provided in the mobile device and comprising a power supply device for supplying power to the operating device.

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