Obstacle removal device

Abstract

To solve problems held by conventional technology, namely, to provide an obstacle removal device with a lighter weight in comparison with the conventional technology and which can remove various obstacles.SOLUTION: An obstacle removal device of the present invention comprises a connected body formed by connecting a plurality of link members in a longitudinal direction. The link members comprise: center engagement bodies; left engagement bodies; and right engagement bodies, and housing spaces are formed between the left engagement bodies and the right engagement bodies aligned in a short axis direction. A part of the link members is a projection link member and a projection projecting in the short axis direction is formed in the projection link member. Then, an obstacle can be removed from overhead wire while capturing the obstacle by hanging the projection of the projection link member on the obstacle held on the overhead wire.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a technology for removing obstacles attached to, for example, overhead power transmission lines, and more specifically to an obstacle removal device that consists of multiple link members connected mainly in the longitudinal direction and that can entangle obstacles with protrusions provided on the link members. [Background technology]

[0002] Power plants generate electricity at several thousand to tens of thousands of volts, but to avoid losses due to electrical resistance, the electricity is converted to ultra-high voltage of around several hundred thousand volts before transmission. The voltage is then gradually reduced at various substations, such as ultra-high voltage substations, primary substations, secondary substations, and distribution substations, before being supplied to factories and other facilities, and is further reduced by pole-mounted transformers before being supplied to homes. In any case, the electricity generated at power plants is supplied to users via transmission and distribution lines that use electric wires and cables (hereinafter collectively referred to as "transmission lines, etc."), and naturally, there are a huge number of transmission lines, etc., deployed throughout the country.

[0003] Traditionally, power lines were mainly strung on power poles, but in recent years, undergrounding has been promoted, and for example, in Tokyo's 23 wards, 92.6% of the lines have been undergrounded (as of 2021). However, nationwide, the number of underground sections is still small, at just under 20%, and the current situation is that the majority of power lines are still strung on power poles.

[0004] As shown in FIG. 11, various flying objects (hereinafter referred to as "obstacles"), such as agricultural sheeting, kites, plastic bags, and balloons, can get caught on power lines and other objects. The general public is warned to avoid removing these obstacles due to the risk of electric shock, and removal is performed only by those with specialized knowledge. Conventionally, obstacle-cutting devices have been used to remove obstacles from power lines and other objects. Specifically, the device is installed on the power line and then moved back and forth along the line, cutting the obstacles with its cutting blade. For example, Patent Document 1 discloses a flying object removal device that mainly consists of a traveling roller, a hanging member, and a cutting blade attached to the hanging member. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-209187 Summary of the Invention [Problem to be solved by the invention]

[0006] The invention disclosed in Patent Document 1 has two rollers, one on the front and one on the back, that are arranged to sandwich the electric wire, and a hanging member hangs down from the vicinity of each roller below the power transmission line, etc. A cutting blade is provided on the traveling side of this hanging member, and when the flying object removal device installed on the power transmission line, etc. is moved back and forth, the cutting blade cuts through obstacles. To move the flying object removal device back and forth, a worker on the ground pulls four rope members attached to the flying object removal device in the direction of movement.

[0007] The flying object removal device in Patent Document 1 offers improved stability and operability compared to previous models, as well as improved travel and flying object removal capabilities. However, new areas for improvement have been identified as it has been used. Obstacles hanging from power lines and other structures vary widely, and in some cases, removing the obstacles can be time-consuming or even difficult. For example, in cases where an obstacle hangs down from a power line, as shown in Figure 12, the entire device must be tilted significantly to press the hanging member, making the removal process time-consuming. Furthermore, in cases where only the kite string is caught on the power line, removal itself is extremely difficult. Furthermore, the flying object removal device is heavy to manually install on power lines and other structures. Furthermore, removal requires repeated, almost forceful pushing of the device against the obstacle, requiring considerable effort. Furthermore, because each of the four rope members requires a different worker, four workers must always be available to remove the obstacle.

[0008] An object of the present invention is to solve the problems of the prior art, that is, to provide an obstacle removal device that is lighter than the prior art and capable of removing a variety of obstacles. [Means for solving the problem]

[0009] The present invention was made by focusing on the technical idea of ​​"entangling obstacles" instead of the conventional technical idea of ​​"cutting obstacles," and is based on an unprecedented concept.

[0010] The obstacle removal device of the present invention includes a "connecting body" in which multiple "link members" are connected in the longitudinal direction. The link members include a "central insertion body," a "left clamping body," and a "right clamping body." A "storage space" is formed between the left and right clamping bodies, which are aligned in the minor axis direction (perpendicular to the major axis). Some (or all) of the link members are "protruding link members," and these protruding link members have "protrusions" that protrude in the minor axis direction. Adjacent link members are coupled together in the longitudinal direction with the central insertion body of one link member housed in the storage space of the other link member. By engaging the protrusions of the protruding link members with an obstacle attached to the overhead wire, the obstacle can be entangled and removed from the overhead wire.

[0011] The obstacle removal device of the present invention may also be configured such that "pin insertion holes" are formed in the short axis direction in the central insert and the left and right clamps. In this case, adjacent link members are pin-connected to each other by inserting a "link pin" through the pin insertion hole in the central insert of one adjacent protruding link member and the pin insertion holes in the left and right clamps of the other link member.

[0012] In the obstacle removal device of the present invention, the protruding portion of the protruding link member may include a "support shaft" and a "claw." The support shaft is a member extending in the short axis direction, and one of the claws is a member provided at the tip of the support shaft. The claw has a cross-sectional shape with one or more corners formed around its periphery, and the support shaft at the position where it connects to the claw has a smaller diameter than the claw. When the claw has a triangular cross-sectional shape, protruding link members adjacent in the long axis direction may be arranged so that the cross-sectional orientation of each claw is different when viewed from the side (for example, upside down).

[0013] The obstacle removal device of the present invention may further include a "rod link member" and a "rod." This rope link member is connected to the link members at both ends in the longitudinal direction, and ropes are attached to each of the rope link members. The rope link member has a "rod insertion hole" formed in the minor axis direction, and the rope is attached to the rope link member by being inserted through this rope insertion hole. [Effects of the Invention]

[0014] The obstacle removal device of the present invention has the following effects. (1) Since the purpose is not to cut the obstacle but to entangle it and remove it, it can remove obstacles of various types and situations, such as obstacles that hang down and extend downward, or cases where only the kite string is caught on power lines, etc. (2) The entire device is lighter than conventional devices, making it easier to install, remove, and transport. (3) Since there is no need to move the device along the overhead wire as in the prior art, the labor required for removing obstacles is reduced compared to the prior art. (4) The system is installed across the overhead wires, and workers on the ground pull on the cables hanging down on both sides to entangle the obstacle. Therefore, unlike obstacle removal work, it is not necessary to secure four workers, and only two workers are required. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a model diagram showing a situation in which an obstacle attached to an overhead wire is to be removed using the obstacle removal device of the present invention; [Figure 2] 1 is a perspective view showing a schematic diagram of an obstacle removal device of the present invention, which is composed of a connector and a rope material. [Figure 3] FIG. 4 is a front view showing a connecting body in which a plurality of link members are connected in the longitudinal direction. [Figure 4] FIG. 4 is a side view showing a connecting body in which a plurality of link members are connected in the longitudinal direction. [Figure 5] FIG. 4 is a perspective view showing a protruding link member of the link member. [Figure 6] 1A is a front view showing the protruding link member, FIG. 1B is a plan view of the protruding link member as seen from the arrow AA in FIG. 1A, and FIG. 1C is a side view of the protruding link member as seen from the arrow BB in FIG. [Figure 7] FIG. [Figure 8] 1(a) is a front view showing a schematic diagram of a situation in which the central insertion body of the link member on the starting point side is about to be inserted into the storage space of the link member on the end point side, and FIG. 1(b) is a front view showing a schematic diagram of a situation in which the link pin is about to be inserted into the aligned right pin insertion hole, central pin insertion hole, and left pin insertion hole. [Figure 9] FIG. 1A is a front view showing a state in which protrusions having claws with a triangular cross-sectional shape are connected together, and FIG. 1B is a side view showing a state in which protrusions having claws with a triangular cross-sectional shape are connected together. [Figure 10] (a) is a front view showing a schematic diagram of a link member for a starting point rope connected to a protruding link member on the end point side, and (b) is a front view showing a schematic diagram of a link member for an ending point rope connected to a protruding link member on the start point side. [Figure 11] FIG. 1 is a perspective view schematically illustrating a situation in which an obstacle is attached to a power transmission line. [Figure 12] FIG. 1 is a perspective view schematically showing an obstacle hanging down so as to extend downward, such as a power transmission line. DETAILED DESCRIPTION OF THE INVENTION

[0016] An example of an embodiment of the obstacle removal device of the present invention will be described with reference to the drawings. The present invention is a technology for removing "obstacles" attached to "overhead lines," and can be used for various overhead lines. However, for convenience, the following description will be given using an example in which the overhead line is a power transmission line.

[0017] First, a procedure for removing an obstacle using the obstacle removal device 100 of the present invention will be described with reference to FIG. 1. FIG. 1 is a model diagram that schematically illustrates a situation in which an obstacle attached to a power transmission line is to be removed using the obstacle removal device 100 of the present invention. First, as shown in this diagram, the obstacle removal device 100 is draped over the power transmission line to which the obstacle is attached. Next, two workers on the ground each grab the ends hanging down on both sides from the power transmission line. Then, with the obstacle removal device 100 in contact with the obstacle, the workers alternately pull it in. As will be described later, a protrusion is provided on a portion of the obstacle removal device 100, and once it is confirmed that the obstacle has been entangled in this protrusion, the obstacle removal device 100 and the obstacle are pulled down toward one of the workers.

[0018] 2, the obstacle removal device 100 of the present invention is configured to include a connector 200, and may further include ropes 300 attached to both ends of the connector 200. Below, each of the main elements that make up the obstacle removal device 100 of the present invention will be described in detail.

[0019] FIG. 3 is a front view mainly showing the connected body 200, and FIG. 4 is a side view mainly showing the connected body 200. As shown in these figures, the connected body 200 is formed by connecting a plurality of link members 210 in the axial direction. For convenience, the axial direction in which the link members 210 are connected will be referred to as the "long axis direction," and the width direction of the connected body 200, which is perpendicular to the long axis direction, will be referred to as the "short axis direction." Furthermore, one side of the long axis direction (lower left in FIG. 4) will be referred to as the "starting point side," and the opposite side (lower right in FIG. 4) will be referred to as the "ending point side." The left and right sides of the connected body 200 are defined as viewed from the starting point side toward the ending point side. In other words, FIG. 4 is a side view of the link member 210 shown in FIG. 3 as viewed from the right side in the short axis direction.

[0020] The link members 210 that make up the connecting body 200 can be broadly divided into three types of link members 210: those with protrusions (hereinafter referred to as "protrusion link members 210P"), those without protrusions (hereinafter referred to as "normal link members 210N"), and those to which the cords 300 are attached (hereinafter referred to as "cord link members 210R"). Of these, the protrusion link members 210P and the normal link members 210N form the main body (middle part) of the connecting body 200, while the cord link members 210R are disposed at both ends of the connecting body 200 (the ends on the starting point side and the end point side).

[0021] The cord link member 210R is provided with a through-hole (hereinafter referred to as "cord insertion hole 213R") along the minor axis direction. Therefore, as shown in Figures 3 and 4, the cord 300 can be attached to the cord link member 210R by inserting it through the cord insertion hole 213R and tying a knot KN. The cord 300 is a so-called rope-like (string-like) cord, and various conventionally used cords such as resin ropes and wire ropes can be used as the cord 300. Of course, the cord 300 can also be attached to the cord link member 210R using a connecting jig such as a shackle.

[0022] Fig. 5 is a perspective view showing a protruding link member 210P of the link member 210. Fig. 6(a) is a front view showing the protruding link member 210P, Fig. 6(b) is a plan view of the protruding link member 210P as seen in the direction of arrow AA in Fig. 6(a), and Fig. 6(c) is a side view of the protruding link member 210P as seen in the direction of arrow BB in Fig. 6(a).

[0023] As shown in Figures 5 and 6, the protruding link member 210P has a "left clamping body 211," a "right clamping body 212," and a "central inserting body 214" that form part of its main body. The left clamping body 211 and the right clamping body 212 are arranged side by side in the minor axis direction, and a space (hereinafter referred to as "accommodating space 213") is formed between them. The accommodating space 213 and the central inserting body 214 are arranged side by side in the major axis direction; for example, in Figures 5 and 6, the accommodating space 213 is arranged on the starting point side, and the central inserting body 214 is arranged on the end point side.

[0024] The left clamping body 211 and the right clamping body 212 each have a "protrusion 215" protruding from their side surface in the minor axis direction. While it is desirable for the protrusion link member 210P to have protrusions 215 on both the left and right sides as shown in FIG. 5 and other figures, this does not exclude a protrusion link member 210P having a protrusion 215 on only one of the left and right sides. The protrusion 215 includes a "support shaft 215B" extending from the side surface of the left clamping body 211 or the right clamping body 212 in the minor axis direction and a "claw 215A" provided at the tip of the support shaft 215B. The claw 215A's primary function is to entangle obstacles, so the cross-sectional shape of the claw 215A should be designed to facilitate entanglement of obstacles. The "cross-sectional shape" referred to here refers to the shape of the claw 215A when cut along a plane perpendicular to the minor axis direction. The cross-sectional shape of the claw 215A is preferably one having one or more corners (including acute angles, obtuse angles, and right angles) formed around the periphery, and may be, for example, a triangle, a rectangle, or other polygon.

[0025] Looking at the connection point between the support shaft 215B and the claw 215A, as can be seen in FIG. 6(a), the diameter (width) of the support shaft 215B is much smaller than the width of the claw 215A, forming a "neck" as it were. This neck allows the obstacle to be entangled more reliably. The support shaft 215B and the claw 215A can be integrally formed by cutting a member made of, for example, resin, or they can be manufactured separately and then firmly fixed together. Similarly, the protrusion 215 and the main body of the link member 210 (the left clamp 211, the right clamp 212, and the central insert 214) can also be integrally formed, or they can be manufactured separately and then fixed together.

[0026] As shown in FIG. 6 , the central insertion body 214 has a small hole (hereinafter referred to as the “central pin insertion hole 214H”) formed along the short axis direction. Similarly, the left clamping body 211 has a small hole (hereinafter referred to as the “left pin insertion hole 211H”) formed along the short axis direction, and the right clamping body 212 has a small hole (hereinafter referred to as the “right pin insertion hole 212H”) formed along the short axis direction. Since a link pin 220 (described later) is inserted through the central pin insertion hole 214H, the left pin insertion hole 211H, and the right pin insertion hole 212H, the central pin insertion hole 214H is a through hole, and at least one of the left pin insertion hole 211H and the right pin insertion hole 212H is a through hole. Note that the left pin insertion hole 211H and the right pin insertion hole 212H, which are not through holes, may have a female thread formed on the inner periphery.

[0027] 7 is a front view showing a normal link member 210N of the link member 210. As shown in this figure, the normal link member 210N, like the protruding link member 210P, has a left clamping body 211, a right clamping body 212, and a central inserting body 214 that form part of its main body. A storage space 213 is formed between the left clamping body 211 and the right clamping body 212, and the central inserting body 214 is formed to be aligned with the storage space 213 in the longitudinal direction. A central pin insertion hole 214H is formed in the central inserting body 214, and a left pin insertion hole 211H is formed in the left clamping body 211, and a right pin insertion hole 212H is formed in the right clamping body 212. However, the left clamping body 211 and the right clamping body 212 of the normal link member 210N do not have protrusions 215.

[0028] Figure 8 is a schematic diagram of link members 210 connected in the longitudinal direction, where (a) is a front view showing the situation in which the central insertion body 214 of the link member 210 on the starting point side is about to be inserted into the storage space 213 of the link member 210 on the end point side, and (b) is a front view showing the situation in which the link pin 220 is about to be inserted into the aligned right pin insertion hole 212H, central pin insertion hole 214H, and left pin insertion hole 211H.

[0029] As shown in this figure, link members 210 arranged adjacently in the longitudinal direction are connected. Note that a protruding link member 210P can be connected to a normal link member 210N, or protruding link members 210P can be connected to each other, or normal link members 210N can be connected to each other. Also, the connected body 200 can be made up of only protruding link members 210P without including normal link members 210N, or it can be made up of protruding link members 210P and normal link members 210N, and of course it can also be made up of a cable link member 210R.

[0030] The procedure for connecting adjacent link members 210 will be described below with reference to Fig. 8. First, as shown in Fig. 8(a), the central insertion body 214 of one link member 210 (the starting point side in the figure) is inserted into the accommodation space 213 of the other link member 210 (the end point side in the figure). Then, after aligning the hole positions of the right pin insertion hole 212H, the central pin insertion hole 214H, and the left pin insertion hole 211H, the link pin 220 is inserted. As a result, adjacent link members 210 are connected to each other by pin connection.

[0031] If a female thread is provided on the inner periphery of the left pin insertion hole 211H or the right pin insertion hole 212H, it is preferable to provide a male thread at the tip of the link pin 220. For example, in the case of FIG. 8, the right pin insertion hole 212H and the central pin insertion hole 214H are formed as through holes, a female thread is provided at the back of the left pin insertion hole 211H (in this case, the left end), and a male thread is provided at the tip of the link pin 220. Then, the link pin 220 is inserted through the right pin insertion hole 212H and the central pin insertion hole 214H, and the male thread of the link pin 220 is screwed into the female thread of the left pin insertion hole 211H. This prevents the link pin 220 from falling out of the left pin insertion hole 211H, etc., and therefore adjacent link members 210 are stably connected.

[0032] As explained above, the cross-sectional shape of the claws 215A of the protrusion 215 is preferably a triangle or other shape with corners formed around the periphery. In this case, the protruding link members 210P adjacent in the longitudinal direction should be arranged so that the cross-sectional directions of the two claws 215A are different. Note that the meaning of "protruding link members 210P adjacent in the longitudinal direction" here is not limited to cases where the protruding link members 210P are directly adjacent to each other, but also includes cases where the protruding link members 210P are indirectly adjacent to each other with a normal link member 210N sandwiched between them.

[0033] FIG. 9 is a diagram showing a state in which protrusions 215 having claws 215A with a triangular cross section are connected, with (a) being a front view and (b) being a side view. For convenience, the claws 215A are shown in color in this figure. The claws 215A of the protruding link members 210P shown in this figure have a triangular cross section, and the protruding link members 210P are connected with a normal link member 210N sandwiched between them. Looking at the claws 215A of adjacent protruding link members 210P in the longitudinal direction, they are arranged in opposite directions. Specifically, when viewed from above, the claw 215A of the top protruding link member 210P shown in FIG. 9(b) is arranged so that its apex is on the right side, and the claw 215A of the protruding link member 210P below it is arranged so that its apex is on the left side, and the claws 215A of the subsequent protruding link members 210P are also arranged so that their apex is alternately reversed. In this way, when the protruding link members 210P are arranged such that the claws 215A of the protruding link members 210P adjacent in the longitudinal direction are oriented in different directions, it becomes easier to entangle and catch an obstacle, which is preferable.

[0034] Although the cable link member 210R has been described as being connected to both ends of the connector 200, the cable link member 210R connected to the starting point side (hereinafter, specifically referred to as the "starting cable link member 211R") and the cable link member 210R connected to the ending point side (hereinafter, specifically referred to as the "ending cable link member 212R") may have different structures. Fig. 10(a) is a front view schematically showing the starting cable link member 211R connected to the ending point side protruding link member 210P, and Fig. 10(b) is a front view schematically showing the ending cable link member 212R connected to the starting point side protruding link member 210P. Note that the upper side is the ending point side in Fig. 10(a), while the lower side is the ending point side in Fig. 10(b).

[0035] As explained so far, the protruding link member 210P and the normal link member 210N have the accommodation space 213 and the central insert 214 arranged side by side in the longitudinal direction. In other words, the cable link member 210R will be adjacent to either the protruding link member 210P (or the normal link member 210N) to which the central insert 214 faces, or the protruding link member 210P to which the accommodation space 213 faces. Moreover, one cable link member 210R (for example, the start point side) will be adjacent to the protruding link member 210P to which the accommodation space 213 faces, and the other cable link member 210R (for example, the end point side) will be adjacent to the protruding link member 210P to which the central insert 214 faces.

[0036] Therefore, it is advisable to provide a central insert 214 in the rope link member 210R adjacent to the protruding link member 210P (or normal link member 210N) toward which the storage space 213 faces, and to provide a storage space 213 in the rope link member 210R adjacent to the protruding link member 210P toward which the central insert 214 faces. For example, in Figure 10, the starting rope link member 211R and the protruding link member 210P toward which the storage space 213 faces are adjacent, and the ending rope link member 212R and the protruding link member 210P toward which the central insert 214 faces are adjacent. Therefore, the starting rope link member 211R is provided with the central insert 214, and the ending rope link member 212R is provided with the storage space 213.

[0037] As shown in Fig. 10, the starting point cable link member 211R and the ending point cable link member 212R each have a cable insertion hole 213R that is roughly aligned along the minor axis direction (more specifically, parallel to a plane including the minor axis direction and the major axis direction). As described above, the cable 300 can be attached to the cable link member 210R by inserting it through the cable insertion hole 213R and tying a knot KN. Then, as shown in Fig. 1, two workers on the ground each grab the ends of the cable 300 hanging down on both sides from the power transmission line, and when the workers alternately pull in the obstacle removal device 100 with the obstacle in contact with the obstacle, the obstacle entangled in the protrusion 215 (particularly the claw 215A) can be pulled down to the ground. Furthermore, as a result of repeated test construction, the inventors of the present invention have found that inserting the rope 300 through the rope link member 210R in the minor axis direction allows the rope 300 to be more firmly attached to the rope link member 210R, i.e., allows for more stable operation. [Industrial Applicability]

[0038] The obstacle removal device of the present invention can be used to remove obstacles attached to various overhead lines, and is particularly suitable for use when removing flying objects attached to power transmission lines, etc. The present invention can efficiently remove flying objects that get caught on power transmission lines, etc., and as a result, stable power transmission can be maintained, that is, electricity, which is a social infrastructure, can be properly maintained. Considering this, the invention can be expected to not only be used industrially but also to make a great contribution to society. [Explanation of symbols]

[0039] 100 Obstacle removal device of the present invention 200 (Obstacle removal device) connection body 210 (Obstacle removal device) link member 210P (among link members) protruding link members 210N (among link members) Ordinary link member 210R (among link members) link members for rope materials 211R (of the link members for the cable) Link member for the starting cable 212R (of cable link members) End cable link member 213R (Ring material link member) Rope insertion hole 211 (Link member) Left clamp 211H (Link member) Left pin insertion hole 212 (Link member) Right clamp 212H (Link member) Right pin insertion hole 213 (Link member) storage space 214 (of link member) central insert 214H (Link member) central pin insertion hole 215 (Link member) protrusion 215A (Protruding) Claws 215B (Protrusion) Support Shaft 220 (obstacle removal device) link pin 300 (obstacle removal device) rope KN (rod) knot

Claims

1. a connecting body in which a plurality of link members are connected in the longitudinal direction, The link member includes a central insert, a left clamp, and a right clamp; An accommodation space is formed between the left and right clamps arranged in a minor axis direction perpendicular to the major axis direction, Some or all of the plurality of link members are protruding link members having protrusions formed thereon that protrude in the minor axis direction, the central insertion body of one of the link members adjacent in the longitudinal direction is accommodated in the accommodation space of the other of the link members, and the adjacent link members are coupled to each other; By hooking the protruding portion of the protruding link member onto an obstacle attached to the overhead wire, the obstacle can be removed from the overhead wire. An obstacle removal device characterized by:

2. The central inserting body, the left clamping body, and the right clamping body are formed with pin insertion holes in the minor axis direction, The adjacent link members are pin-coupled by inserting a link pin through the pin insertion hole of the central inserting body of one of the adjacent protruding link members and the pin insertion holes of the left clamping body and the right clamping body of the other of the link members.

2. The obstacle removal device according to claim 1.

3. The protruding portion of the protruding link member includes a support shaft extending in the minor axis direction and a claw provided at a tip of the support shaft, The claw has a cross-sectional shape with one or more corners formed around its periphery, The support shaft has a smaller diameter than the claw at a position where it is connected to the claw.

2. The obstacle removal device according to claim 1.

4. The claw has a triangular cross section, The protruding link members adjacent to each other in the longitudinal direction are arranged such that the cross sections of the claws of each other have different orientations when viewed from the side.

4. The obstacle removal device according to claim 3.

5. a cable link member connected to the link member at both ends in the longitudinal direction; a rope attached to the rope link member, The cable link member has a cable insertion hole in the minor axis direction, The cord is inserted into the cord insertion hole of the cord link member and attached to the cord link member.

2. The obstacle removal device according to claim 1.

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