JP7344826B2 - Rope installation tools and rope installation methods - Google Patents

Description

TECHNICAL FIELD The present invention relates to a rope attachment tool and a rope attachment method for laying a rope around the outer periphery of an object to which the rope is attached.

Traditionally, when felling trees by hand, if there were houses or power lines nearby, a rope was strung around the trunk at the top of the tree to prevent the felled tree from damaging the houses or power lines. , pull the rope to control the direction in which the tree falls. Since it is difficult to span a rope over a tree, there is a need for a rope installation tool that allows this to be done easily and safely.

Patent Document 1 discloses that a rod-shaped body (tree) is positioned between a pair of arms in an open state, and the pair of arms closes by simply pulling a rope, and a hook removably attached to one of the arms is attached to the rod-shaped body (tree). A rope stretched over a temporary rope holder fixed to the other of the pair of arms is hooked, and simply by releasing the pulling force, the pair of arms opens and the pair of arms moves relative to the rod-shaped body. A rope attachment tool is disclosed in which the hook is detached from one of the pair of arms and is wound together with the rope around a rod-like body when the hook is attached.

Japanese Patent Application Publication No. 2018-99034

Ropes strung over trees are subject to strong tension when the tree falls, so it is important to determine the size of the tree to be felled at the work site and select the thickness and type of rope to be used to ensure work safety. becomes important. However, since the rope attachment tool disclosed in Patent Document 1 is for directly wrapping a rope around a tree, it becomes complicated to change the rope at a work site. In addition, ropes with a high load capacity are thick and heavy, so if you try to wrap such a rope directly with the rope installation tool described in Patent Document 1, the weight of the rope installation tool including the weight of the rope will be large. It becomes a burden on the worker.

The present invention has been made in view of the above, and an object of the present invention is to provide a rope attachment tool and a rope attachment method that are highly versatile and reduce the burden on the operator.

In order to achieve the above object, a first invention provides a rope installation tool for spanning a rope around the outer periphery of an object to which the rope is to be attached, the tool comprising: an extensible operating section; and a proximal end at the upper end of the operating section. are connected to each other and have a distal end located away from the operating section; a guide section that is pulled out from the operating section along the guide section and has a distal end located at the distal end of the guide section; a linear body that can be further pulled out away from the guide part and retracted to the distal end of the guide part; a held body attached to the distal end of the linear body; and a proximal end that is attached to the operating part. an extendable arm part connected to the guide part and having a holding body at the tip thereof, and in a state where the arm part is extended, the holding body can hold the object to be held located at the tip part of the guide part. , and the object to which the rope is to be attached can be accommodated in a space surrounded by the arm portion and the guide portion, and the rope can be connected to the distal end portion of the linear body.

According to this configuration, the operating section is extended and the arm section is extended with the guide section along the location where the rope is to be attached to the object to which the rope is to be attached, and the outer periphery of the object to which the rope is to be attached is surrounded by the arm section and the guide section. When the arm section is contracted while the holder attached to the tip end of the arm section holds the linear body to be held, the linear object is pulled out from the tip section of the guide section. The outer periphery of the object to which the rope is attached can be surrounded by the drawn-out linear body and the guide portion. Then, by retracting the operating section while further pulling out the linear object from the tip of the guide section and pulling back the object to be held, the linear object can be easily spanned over the object to which the rope is attached. By connecting the rope to the tip of the linear body and winding the linear body back toward the tip of the guide part, the linear body and the rope can finally be replaced, so it can be used in a simple configuration. Regardless, for example, a rope with a large load capacity, such as a towing rope, can be spanned over the object to which the rope is attached. Since any type of rope can be used to replace the linear body, it is easy to select the thickness and type of rope to be used at the work site. In addition, the linear body only needs to be able to span the object to which the rope is attached, and does not need to be able to withstand strong tension, so it is possible to use something thin and light, which reduces the burden on the operator. be able to.

A second invention is based on the first invention, wherein the guide part is tiltable with respect to the operating part, and the arm part is in an extended state regardless of the tilted state of the guide part. , the distal end portion has a length that reaches the distal end portion of the guide portion.

According to this configuration, the guide part can be tilted along the location where the rope of the object to be attached is desired to be attached, so that workability is good. In addition, the holder can hold the object regardless of the tilted state of the guide section, so it can be used even when the object to which the rope is attached is sloped or the ground at the site is sloped. Also, the linear body can be easily spanned over the object to which the rope is attached.

A third invention is characterized in that in the first or second invention, the guide portion is formed in a tubular shape, and the linear body is inserted into the hollow interior.

According to this configuration, the linear body is inserted into the hollow interior of the tubular guide part, so that when the guide part is brought close to the part of the object to which the rope is to be attached, it is possible to Since there is no risk of intertwining of linear bodies with other objects and interfering with work, work efficiency can be improved.

A fourth invention is based on any one of the first to third inventions, wherein the operating section is capable of rotating a reel member that rewinds the linear body pulled out from the tip of the guide section toward the guide section. It is characterized by being prepared for.

According to this configuration, the operator can easily pull out and rewind the linear object by operating the reel member, so even if a thin and light linear object is used, the work can be done more efficiently without getting it entangled. I can do it.

A fifth invention uses the first invention, and includes a first step of extending the arm part and surrounding the outer periphery of the object to which the rope is attached by the arm part and the guide part; a second step of contracting the arm part while holding the rope, pulling out the linear body, and surrounding the outer periphery of the object to which the rope is attached with the linear body and the guide part; a third step of extending the linear body over the object to which the rope is to be attached by pulling the upper end of the operating section and pulling the object to be held back toward the hand while further pulling it out from the tip of the guide section; The pulled-back held body is separated from the holding body, the rope is connected to the tip of the linear body, and the linear body is wound back toward the guide portion, thereby separating the linear body and the rope. and a fourth step of replacing.

According to this configuration, the linear body is spanned over the part of the object to which the rope is to be attached, the linear body is pulled out, the linear body and the rope are connected at hand, and the linear body is connected to the rope. By unwinding, the linear body and rope can be easily replaced. Since any type of rope can be used to replace the linear body, it is easy to select the thickness and type of rope to be used at the work site. In addition, the linear body only needs to be able to span the object to which the rope is attached, and does not need to be able to withstand strong tension, so it is possible to use something thin and light, which reduces the burden on the operator. be able to.

According to the present invention, it is possible to provide a rope attachment tool and a rope attachment method that have high versatility and reduce the burden on the operator.

FIG. 1 is a front view of a rope installation tool according to an embodiment of the present invention. FIG. 2 is a side view of a rope installation tool according to an embodiment of the present invention. FIG. 3 is a perspective view of the rope installation tool shown with the guide section folded down. FIG. 3 is a front view of the rope installation tool shown with the arm section extended. FIG. 3 is a schematic plan view showing a rope attachment method using a rope attachment tool. FIG. 3 is a schematic plan view showing a rope attachment method using a rope attachment tool. FIG. 3 is a schematic plan view showing a rope attachment method using a rope attachment tool. FIG. 3 is a schematic plan view showing a rope attachment method using a rope attachment tool. FIG. 3 is a schematic plan view showing a rope attachment method using a rope attachment tool. FIG. 3 is a schematic plan view showing a rope attachment method using a rope attachment tool. FIG. 3 is a schematic plan view showing a rope attachment method using a rope attachment tool. FIG. 3 is a schematic plan view showing a rope attachment method using a rope attachment tool. FIG. 3 is a schematic plan view showing a rope attachment method using a rope attachment tool. FIG. 3 is a schematic plan view showing a rope attachment method using a rope attachment tool. FIG. 3 is a schematic plan view showing a rope attachment method using a rope attachment tool.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Note that the following description of preferred embodiments is essentially just an example, and is not intended to limit the present invention, its applications, or its uses.

The rope attachment tool 1 according to the embodiment of the present invention, for example, in tree felling work, first spans a linear body 5 over a tree or the like, which is the object 100 to which the rope is attached, and then connects the linear body 5 with the tree to perform the felling work. It is used to replace the auxiliary rope 101 and finally to span the rope 101 around the outer periphery of the object 100 to which the rope is attached.

FIG. 1 is a front view of a rope installation tool according to an embodiment of the present invention. The rope attachment tool 1 according to the embodiment of the present invention includes an operating section 2, a tiltable guide section 3 and an extendable arm section 4 connected to the operating section 2, and a section extending from the operating section 2 along the guide section 3. The linear body 5 is drawn out.

The operating unit 2 is a long member that allows the upper end to reach the rope attachment point of the rope attachment object 100 while the lower end is positioned on the ground, and is made by stacking a plurality of tubular members with different outer diameters. It has a matching stretchable part 21 and is formed to be stretchable. A guide section 3 and an arm section 4 are connected to the upper end of the operating section 2 .

FIG. 2 is a side view of the rope installation tool according to the embodiment of the present invention. As shown in FIG. 2, the operation section 2 includes a tilting operation section 23 that operates the tilting state of the guide section 3, and a telescoping operation section 24 that operates the extending and contracting state of the arm section 4. The operating section 2 also rotatably includes a reel member 25 around which the linear body 5 is wound and which rewinds the linear body 5 toward the guide section 3 side. Thereby, the operating section 2 is configured such that the guide section 3, the arm section 4, and the linear body 5 can be operated at the operator's hand.

The tilting operation section 23, the telescopic operation section 24, and the reel member 25 are each provided with a locking mechanism, and are configured to maintain the operated state depending on the work stage. Known members can be applied to the tilting operation section 23, the telescopic operation section 24, and the reel member 25, and manual or electric ones can be used. For example, as shown in FIGS. 1 and 2, operating cords 23a and 24a are stretched between the tilting operation section 23 and the telescopic operation section 24 and the guide section 3 and the arm section 4, It may be configured such that by operating the section 24, the tilting of the guide section 3 and the extension and contraction of the arm section 4 are operated via the cords 23a and 24a.

A tiltable fixed pedal 26 is provided at the lower end of the operating section 2. The fixed pedal 26 is stored along the operating part 2 when the rope installation tool 1 is not in use, but when the rope installation tool 1 is used, it is tilted along the ground and the operator can use the fixed pedal 26 to stabilize the rope installation tool 1 during work.

The guide portion 3 is a member formed in a tubular shape. The guide part 3 has a proximal end connected to the upper end of the operating part 2, extends upward from the proximal end, is curved in an arc, has a distal end extending downward, and is spaced apart from the operating part 2. To position. Note that the base end and the distal end of the guide portion 3 are at approximately the same height position.

FIG. 3 is a perspective view of the rope attachment tool shown with the guide section folded down, and the two-dot chain line in FIG. 3 indicates the rope attachment object 100. As shown in FIGS. 2 and 3, the guide part 3 is operated in the tilting state by the tilting operation part 23 of the operating part 2, and can be tilted with respect to the operating part 2, and the tip of the guide part 3 is It is located at approximately the same position regardless of the tilting state of No. 3. The linear body 5 is inserted into the hollow interior of the guide portion 3, thereby preventing the linear body 5 from becoming entangled.

The linear body 5 does not need to be able to withstand strong tension like the rope 101, and can be made of a relatively thin and light material. For example, a cord made of resin called Tegus, a metal wire, or a cord made of a metal wire covered with resin, etc. can be used. The base end of the linear body 5 is wound around the reel member 25, extends upward from the reel member 25 along the operating section 2, is inserted from the operating section 2 into the hollow interior of the guide section 3, and is inserted into the hollow interior of the guide section 3. The tip portion is pulled out along the guide portion 3 and exposed from the tip portion of the guide portion 3. Note that, as shown in FIGS. 1 and 2, the linear body 5 is once pulled out downward from the reel member 25, folded back by a pulley or the like from the lower end of the operating section 2, and extended upward along the operating section 2. may be provided.

A held body 51 is attached to the tip of the linear body 5 . The held object 51 is not particularly limited as long as it can be held by a holding body 41 described later, but it is preferable to use a magnet having a strong magnetic force, for example, for the held object 51 and the holding body 41. .

By positioning the distal end of the linear body 5 at the distal end of the guide portion 3, the linear body 5 can be stored so as not to become entangled. During operation, it can be further pulled out away from the tip of the guide section 3, and the drawn-out linear body 5 can be rewound to the tip of the guide section 3. Such operations of pulling out and rewinding the linear body 5 are performed by rotating the reel member 25.

FIG. 4 is a front view of the rope installation tool 1 according to the embodiment of the present invention, with the arm portion 4 shown in an extended state. As shown in FIG. 4, the arm section 4 is an extendable member whose base end is connected to the upper end of the operating section 2 and whose distal end has a holder 41. The arm portion 4 expands and contracts in a direction substantially perpendicular to the length direction of the operating portion 2 . There are no particular limitations on the configuration of the arm portion 4 that allows it to expand and contract, but for example, it may be configured with a so-called magic hand-like member that is formed by connecting a plurality of link members in an X shape so that it can expand and contract in one direction. good.

The arm portion 4 has a length such that its tip reaches the tip of the guide portion 3 when the arm portion 4 is extended. In addition, when the arm part 4 is extended, the holding body 41 can hold the held object 51 located at the tip of the guide part 3, and the rope is placed in the space surrounded by the arm part 4 and the guide part 3. The attachment target 100 can be accommodated therein. When the arm portion 4 is retracted with the holding body 41 holding the held object 51, the linear body 5 is pulled out following the held object 51.

In the present invention, the state in which the held object 51 is located at the tip of the guide section 3 specifically means not only the state in which the held object 51 is in contact with the tip of the guide section 3, but also the state in which the held object 51 is in contact with the tip of the guide section 3. This also includes a state in which the holder 51 is pulled out several centimeters from the tip of the guide section 3 and is located near the tip of the guide section 3 . This is a positional range of the object to be held 51 such that the holding body 41 attached to the tip of the arm portion 4 can hold the object to be held 51 when the arm portion 4 is extended. For example, if strong magnets are used for the held object 51 and the holding body 41, even if the held object 51 is located near the tip of the guide section 3, a few centimeters away from the tip, the holding body 41 It is possible to hold the object 51 by attracting it with magnetic force.

Next, a rope attachment method using the rope attachment tool 1 according to the embodiment of the present invention will be described according to FIGS. 5 to 13. Specifically, for example, in a tree felling operation, a rope 101 for assisting felling is attached to a tree, which is a rope attachment object 100. Note that although the rope attachment object 100 and the rope attachment tool 1 are not in contact with each other in FIGS. Work is performed while contacting the object 100. Further, in FIGS. 7 to 11, arrows in the figures indicate the direction in which the linear body 5 is pulled out or rewound.

First, in the first step, the operation part 2 is extended and the guide part 3 is brought close to the attachment position of the rope attachment object 100, as shown in FIGS. 3 and 5. At this time, the guide part 3 is tilted as shown in FIG. 3, and can be positioned approximately perpendicular to the rope attachment object 100 by wrapping around it from the rear side to the front side of the rope attachment object 100. When the arm part 4 is extended from this state and the holding body 41 is made to reach the tip of the guide part 3 to hold the object 51, as shown in FIG. 4 and the guide portion 3 surround the outer periphery of the object 100 to which the rope is attached.

Next, in a second step, the arm portion 4 is contracted while the holding body 41 holds the held object 51, and the linear body 5 is pulled out. As the linear body 5 is pulled out following the held body 51, the outer periphery of the object 100 to which the rope is attached is surrounded by the linear body 5 and the guide portion 3, as shown in FIG.

Next, in the third step, as shown in FIGS. 8 and 9, while separating the guide part 3 from the outer periphery of the rope attachment object 100, and further pulling out the linear body 5 from the tip of the guide part 3, The linear body 5 is spanned over the rope attachment object 100 by retracting the operating part 2 and pulling the upper end thereof, and pulling the held body 51 back toward the hand.

Next, in the fourth step, as shown in FIG. 10, the held body 51 that has been pulled back to the hand is separated from the holding body 41, and the rope 101 is connected to the tip of the linear body 5. In this state, by winding the linear body 5 back toward the guide portion 3 side, the rope 101 is spanned over the rope attachment object 100 as shown in FIG. 11, and the linear body 5 and the rope 101 are replaced. .

Finally, as shown in FIG. 12, a ring-shaped connecting fitting 200 is connected to the ring portion 101a formed in a ring shape at one end of the rope 101, and the other side of the rope 101 is inserted through the connecting fitting 200. let When the other end of the rope 101 is pulled away from the rope attachment object 100, the connecting fitting 200 and the ring part 101a slide toward the rope attachment object 100, and as shown in FIG. 13, the rope 101 can be tightened around the outer periphery of the object 100 to which the rope is attached. In this state, the operator pulls the rope 101 on the other side at a position away from the object 100 to which the rope is to be attached, while a felling operation or the like is performed.

Note that the rope 101 can be tightened around the outer periphery of the rope attachment object 100 by inserting the other side of the rope 101 through the ring portion 101a and pulling the other side of the rope 101 without using the connecting fitting 200. Using the metal fitting 200 improves the work efficiency of pulling the rope 101.

As explained above, according to the rope attachment tool 1 according to this embodiment, the outer periphery of the rope attachment object 100 is surrounded by the linear body 5 pulled out by the arm part 4 and the guide part 3, and the linear body 5 By further pulling out and pulling the held body 51 back to the hand, the linear body 5 can be easily spanned over the rope attachment object 100. By connecting the rope 101 to the tip of the linear body 5 and rewinding the linear body 5, the linear body 5 and the rope 101 can finally be replaced, so despite the simple configuration. For example, a rope 101 with a large load capacity, such as a traction rope, can be spanned over the object 100 to which the rope is attached. Since any type of rope 101 can be used to replace the linear body 5, it is possible to easily select the thickness and type of the rope 101 used at the work site. In addition, the linear body 5 only needs to be able to span the object 100 to which the rope is attached, and does not need to be able to withstand strong tension, so it is possible to use a thin and light body, which reduces the burden on the operator. It can be reduced.

The embodiments described above are merely illustrative in all respects and should not be interpreted in a limiting manner. Furthermore, all modifications and changes that come within the scope of equivalents of the claims are intended to be within the scope of the present invention.

For example, the operating section 2 may be formed of a tubular member having a hollow interior. If the operating section 2 is formed of a tubular member, it becomes possible to insert the linear body 5 into the hollow interior of the operating section 2, and it is possible to prevent the linear body 5 from becoming entangled.

Furthermore, the work after replacing the linear body 5 with the rope 101 is not limited to the method shown in FIGS. 12 and 13, but may also be performed using the method shown in FIGS. 14 and 15. Specifically, as shown in FIG. 14, the ropes 101 on both left and right sides are bundled through a ring-shaped tightening fitting 201 from both ends of the rope 101, and by pulling both ends of the rope 101 left and right, the tightening fittings 201 are attached to the rope. Move closer to object 100. Then, as shown in FIG. 15, with the rope 101 fixed around the outer periphery of the object 100 to which the rope is attached using the tightening fittings 201, a worker pulls both ends of the rope 101 at a position away from the object 100 to which the rope is attached. However, felling work etc. may be carried out.

Further, in the embodiment of the present invention, the linear body 5 is replaced with a rope 101 that assists in felling work, etc. However, in cases where the thickness of the linear body 5 and the rope 101 are significantly different, for example, the linear body 5 may be Rather than directly replacing the rope 101 with the rope 101, the rope may be replaced multiple times, such as replacing the linear body 5 with the second rope, and replacing the second rope with the rope 101 used for felling work or the like.

1 Rope installation tool 2 Operation part 3 Guide part 4 Arm part 5 Linear body 41 Holding body 51 Body to be held 100 Rope attachment object 101 Rope

Claims (5)

A rope installation tool for spanning the outer circumference of an object to which the rope is attached,
A retractable operation part,
a guide part whose base end is connected to the upper end of the operating part and whose distal end is located away from the operating part;
It is pulled out from the operating part along the guide part so that the distal end is located at the distal end of the guide part, can be further pulled out away from the distal end of the guide part, and is wound around the distal end of the guide part. a reversible linear body;
a held body attached to the tip of the linear body;
an extendable and retractable arm part whose base end part is connected to the operating part and whose distal end part has a holder,
When the arm part is extended, the holding body can hold the object to be held located at the tip of the guide part, and the object to be attached to the rope can be held in the space surrounded by the arm part and the guide part. can be accommodated,
The rope attachment tool is characterized in that the rope can be connected to the tip of the linear body. The rope installation tool according to claim 1,
The guide part is tiltable with respect to the operation part,
The rope attachment tool is characterized in that the arm section has a length such that a tip end of the arm section reaches the tip end of the guide section when the arm section is extended, regardless of a tilted state of the guide section. The rope installation tool according to claim 1 or 2,
The rope attachment tool is characterized in that the guide portion is formed in a tubular shape, and the linear body is inserted into the hollow interior. The rope installation tool according to any one of claims 1 to 3,
The rope attachment tool is characterized in that the operating section rotatably includes a reel member that rewinds the linear body pulled out from the tip of the guide section toward the guide section. A rope attachment method using the rope attachment tool according to claim 1, comprising:
a first step of extending the arm part and surrounding the outer periphery of the object to which the rope is attached by the arm part and the guide part;
a second step of retracting the arm part with the holding body holding the held object, pulling out the linear body, and surrounding the outer periphery of the object to which the rope is attached by the linear body and the guide part; and,
While further pulling out the linear body from the tip of the guide part, the upper end of the operation part is brought together, and the held body is pulled back to the hand, thereby connecting the linear body to the object to which the rope is attached. 3 steps and
The object to be held, which has been pulled back to the hand, is separated from the holder, the rope is connected to the tip of the linear object, and the linear object is wound back toward the guide section, thereby separating the object from the linear object. A rope attachment method comprising: a fourth step of replacing the rope.

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