JP2012152542A - Torso rope for safety belt for working on tree - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a torso rope for a safety belt for working on a tree, with which a worker can safely perform cutting work or the like at a high place on a tree.SOLUTION: The torso rope of a safety belt for working on a tree comprises a main rope 2, expansion adjusters 4 provided at least at three parts of the main rope 2, and a joint member 6 for joining the respective expansion adjusters 4 and joined parts 12, 13, 14 of a safety belt 9 for working worn by a worker S. The respective expansion adjusters 4 are provided on both end parts 2a, 2b of the main rope 2 with stoppers 5 which move along the main rope 2 by performing prescribed operation, whose movement on the main rope 2 is blocked by prescribed load imposed, and which block slip-out of the expansion adjusters 4. When the torso rope is used, the main rope 2 is wound around two trunks T1, T2 or branches of a tree, the expansion adjusters 4 positioned in the middle of the trunks T1, T2 or the branches are joined to the joined part 12 of the safety belt 9 for working via the joint member 6, and the two expansion adjusters 4, 4 positioned on both sides of the trunks T1, T2 or the branches are joined to the joined parts 13, 14 via the joint member 6.

Description

  The present invention relates to a trunk for a work safety belt on a tree that is used to climb a tree and cut a branch or a trunk safely.

  As conventional trunks for work safety belts on trees, publicly known documents such as patent gazettes cannot be specifically cited, but as a conventional trunk of this kind, a main rope with a hook attached to one end, and a main rope And a telescopic adjustment tool having a locking portion, and the telescopic adjustment tool is held along the main rope by grasping this and pushing and pulling the main rope. It is movable, and by applying tension to the lock member, movement on the main rope is prevented by the action of the lock member. Thus, when cutting branches and trunks at the height of a tree, an operator wearing a work safety belt on the tree turns the main rope into a U-shape around one trunk at the work position on the tree. Hook and lock the one end of the expansion / contraction adjustment tool to the waist belt, and with the other end of the expansion / contraction adjustment tool locked to the waist belt, push and pull the expansion / contraction adjustment tool by hand. While sliding along the main rope, tension in a predetermined direction is applied to the lock member at a required position to lock the expansion / contraction adjustment tool and adjust the main rope to the required length. In this way, the worker can safely perform work by depositing his body on the rope at a high place on the tree.

  As described above, the conventional trunk for work safety belts on trees is a main rope provided with one expansion / contraction adjustment tool. When the trunk is used, the main rope is hung on one trunk, and one end thereof. The locking part of the arm and the locking part of the expansion / contraction adjustment tool are locked to the trunk belt, and the main rope is adjusted to the required length by the expansion / contraction adjustment tool. However, since it is a one-point support between the worker himself and one trunk that turns the main rope, the worker's body is easily shaken from side to side during the work, and becomes unstable. In this case, since one trunk for turning the main rope is the only fixed support, there is a risk that the operator will fall when the one trunk is broken.

  In view of the above circumstances, the present invention enables a rope to be looped over at least two trunks or branches of a tree, and between the operator and each trunk or branch, with respect to each other trunk or branch. An object of the present invention is to provide a torso for a work safety belt on a tree that allows a work in a high place to be performed safely in a stable state by allowing the U-shaped hanging state to be maintained independently. .

  Means for solving the above problems will be described with reference numerals in the embodiments described later. The trunk 1 for a tree work safety belt of the invention according to claim 1 is a main rope as shown in FIG. The rope 2, the expansion / contraction adjustment tools 4, 4, and 4 provided in at least three locations of the main rope 2, and the connected parts 12, 13, and 14 of the work safety belt 9 attached to each expansion / contraction adjustment tool 4 and the worker S. The expansion / contraction adjustment tool 4 moves along the main rope 2 by performing a predetermined operation, and is prevented from moving on the main rope 2 by applying a predetermined load. Stops 5 and 5 are provided at both ends 2a and 2b of the main rope 2 to prevent the expansion / contraction adjusting tool 4 from coming out. When the trunk rope is used, the main rope 2 is connected to the two trunks T1 of the tree. , T2 or the branch The expansion / contraction adjustment tool 4 located in the middle of the two trunks T1, T2 or branches is connected to the connected portion 12 of the work safety belt 9 via the connecting member 6, and is located on both sides of the two trunks T1, T2 or branches. The two expansion / contraction adjustment tools 4 and 4 are connected to the connected parts 13 and 14 of the work safety belt 9 via the connecting members 6, respectively.

  As shown in FIG. 6, the trunk rope 11 for work safety belts on a tree of the invention according to claim 2 includes a main rope 2 and expansion / contraction adjusting tools 4 and 4 provided in at least two locations of the main rope 2, Each expansion / contraction adjustment tool 4 and a connecting member 6 that connects the connected parts 12, 13, and 14 of the work safety belt 9 worn by the worker S are provided. It moves along the rope 2 and is prevented from moving on the main rope 2 by applying a load in a predetermined direction. The extension adjustment tool 4 is prevented from coming out at one end 2a of the main rope. A stopper 5 is provided, and a connecting member 6 is provided at the other end 2b of the main rope 2 to be connected to the connected portion 14 of the work safety belt 9. When the trunk is used, the main rope 2 is connected to the two trunks T1 and T2 of the tree. Or hang it on a branch The expansion / contraction adjustment tool 4 located in the middle of the trunks T1, T2 or branches is connected to the connected portion 12 of the work safety belt 9 via the connection member 6, and the expansion / contraction adjustment tool 4 on the one end 2a side of the main rope 2 and The other end portion 2b of the main rope 2 is connected to the connected portions 13 and 14 of the work safety belt 9 through the connecting member 6, respectively.

  As shown in FIG. 7, the trunk 21 for work safety belts on trees of the invention which concerns on Claim 3 is the main rope 2, the expansion / contraction adjustment tool 4 provided in at least two places of this main rope 2, and each expansion / contraction It comprises a connecting member 6 that connects the adjuster 4 and the connected parts 12, 13, and 14 of the work safety belt 9 worn by the worker S, and each expansion / contraction adjuster 4 is operated by a predetermined operation, whereby the main rope 2 The movement on the main rope 2 is prevented by applying a load in a predetermined direction, and the connected portions of the work safety belt 9 are connected to both ends 2a and 2b of the main rope 2. 13 and 14 are provided, and when using the trunk, the main rope 2 is hung around the two trunks T1, T2 or branches of the tree and is positioned between the two trunks T1, T2 or branches. The expansion / contraction adjustment tools 4 and 4 are connected via connecting members 6 respectively. Connecting to the connected portion 12 of the work safety belt 9 and connecting the both end portions 2a, 2b of the main rope 2 to the connected portions 13, 14 of the work safety belt 9 via the connecting members 6, respectively. Features.

  As shown in FIG. 8 (a), the trunk 31 for work safety belts on a tree according to the invention of claim 4 includes a main rope 2 and an expansion / contraction adjustment tool 4 provided at at least two locations of the main rope 2. , 4 and the connecting member 6 that connects each of the expansion / contraction adjustment tools 4 and the connected parts 12, 13, and 14 of the work safety belt 9 worn by the worker S. Each expansion / contraction adjustment tool 4 performs a predetermined operation. As a result, the main rope 2 moves along the main rope 2 and is prevented from moving on the main rope 2 by applying a load in a predetermined direction. The two ends 2a and 2b of the main rope 2 are expanded and contracted respectively. A stopper 5 for preventing the adjustment tool 4 from coming out is provided, a rope fixing portion 20 is provided at a required portion of the main rope 2, a connecting member 6 for connecting to the connected portion 12 of the work safety belt 9 is provided, and the torso rope When using the main rope, The two telescopic adjustment tools 4 and 4 are respectively connected to the connected parts 13 and 14 of the work safety belt 9 via the connecting members 6 by being turned around the trunks T1 and T2 or branches, and the rope fixing parts 20 of the main rope 2 are connected. Is connected to the connected portion 12 of the work safety belt 9 through the connecting member 6.

  Claim 5 is the trunk for a work safety belt on a tree according to any one of claims 1 to 4, wherein the expansion / contraction adjustment tool 4 is connected to the main rope at one end 3a side of the rope member 3 as shown in FIG. 2 to form a knot 4A.

  Claim 6 is the trunk for a work safety belt on a tree according to any one of claims 1 to 4, wherein the expansion / contraction adjustment tool 4 is shown in FIG. 5 (c), FIG. 9 (a), FIG. 12, the lock fitting 4 </ b> B configured to move along the main rope 2 by performing a predetermined operation and to be prevented from moving on the main rope 2 when a load in a predetermined direction is applied. It is characterized by comprising 4C.

  The seventh aspect of the present invention is the trunk for a work safety belt on a tree according to the first, second, or fourth aspect, wherein the stopper 5 provided at the end of the main rope 2 is formed in a loop shape at the end of the rope. It is characterized by comprising.

  The eighth aspect of the present invention is the trunk for a work safety belt for trees according to the fourth aspect, wherein the rope fixing portion 20 is bent and fixed to the middle portion of the main rope 2 as shown in FIG. 8 (b), for example. It is characterized by comprising a rope knot 20A in which a ring 22 is formed.

  The effects of the invention by the above-described solution means will be described with reference numerals in the embodiments described later. The tree work safety belt trunk 1 of the invention according to claim 1 has a main rope as shown in FIG. 2, expansion / contraction adjustment tools 4, 4, 4 provided at at least three locations on the main rope 2, connected portions 12, 13, 14 of the work safety belt 9 attached to each expansion / contraction adjustment tool 4 and the worker S Since both ends 2a and 2b of the main rope 2 are provided with stoppers 5 and 5 for preventing the expansion / contraction adjustment tool 4 from coming out, the main rope 2 is used when the torso is used. Is stretched over two trunks T1, T2 or branches of the tree, and the expansion / contraction adjustment tool 4 located in the middle of the two trunks T1, T2 or branches is connected to the connected portion 12 of the work safety belt 9 via the connecting member 6. Connected to the two trunks T1, T2 or both sides of the branch By connecting the two expansion / contraction adjustment tools 4 and 4 positioned to the connected parts 13 and 14 of the work safety belt 9 via the connecting members 6, the torso rope 1 can be used by an operator as illustrated in FIG. 3. S is supported at two points of two trunks T1, T2 (or branches), and between the operator S and each of the trunks T1, T2 (or branches), other trunks T1, T2 (or branches) are mutually connected. In contrast, since the U-shaped hanging state is maintained, the body of the worker S does not shake from side to side during the work, and the worker S can maintain a stable state and perform the work efficiently. Even if one of the trunks T1 (or branches) is broken, the trunk line 1 is maintained in a U-shaped hanging state between the other trunk T2 (or branches) and the worker S. Therefore, the danger of the operator falling can be avoided.

  Further, the trunk 1 is provided with expansion / contraction adjusting tools 4 on both ends 2a and 2b side of the main rope 2 and in the middle thereof, so that as shown in FIG. The length can be adjusted independently for the trunk 1 part that is swung around the branch in a U-shape and the trunk 1 that is swung around the other trunk T2 or branch. Therefore, it is possible to easily adjust the appropriate work position of the worker S according to the distance between the worker S and the trunks T1, T2 or branches of the tree, and therefore work such as cutting on the tree is extremely performed. It becomes easy. Even if one of the tree trunks T1, T2 (or branches) is relatively thin and not very strong in strength, the main rope 2 can be turned around the two trunks T1, T2 (or branches). The worker S can be safely held and work such as cutting on a tree can be easily performed.

  As shown in FIG. 6, the trunk rope 11 for work safety belts on a tree of the invention according to claim 2 includes a main rope 2, expansion / contraction adjustment tools 4 and 4 provided at least at two locations on the main rope 2, and It consists of a connecting member 6 that connects the expansion / contraction adjustment tool 4 and the connected parts 12, 13, and 14 of the work safety belt 9 worn by the operator S, and prevents the expansion / contraction adjustment tool 4 from coming out at one end 2a of the main rope. 3 and the other end 2b of the main rope 2 is provided with a connecting member 6 to be connected to the connected portion 14 of the work safety belt 9, and when the torso 11 is used, the torso 1 shown in FIG. The main rope 2 is turned around the two trunks T1, T2 or branches of the tree T, and the expansion / contraction adjustment tool 4 located in the middle of the two trunks T1, T2 or branches is operated via the connecting member 6. One end of the main rope 2 connected to the connected portion 12 of the safety belt 9 By connecting the expansion / contraction adjusting tool 4 on the a side and the other end 2b of the main rope 2 to the connected parts 13 and 14 of the work safety belt 9, the worker S has two trunks T1 and T2 (or branches). The U-shaped swung state is maintained between the operator S and each of the trunks T1, T2 (or branches) with respect to the other trunks T1, T2 (or branches). Therefore, the body of the worker S does not sway from side to side during the work, the worker S can maintain a stable state, can perform the work efficiently, and tentatively one trunk T1 (or Even if the branch is broken, the trunk 1 maintains a U-shaped turning state between the other trunk T2 (or branch) and the worker S, thus avoiding the danger of the operator falling. can do.

  Further, since the rope 11 is provided with expansion / contraction adjustment tools 4 at least at two locations on the main rope 2, a trunk that is turned around in a U-shape from the operator S to one trunk T1 (or branch). The length of the rope 11 can be adjusted independently of the length of the trunk T2 (or branch) on the other trunk T2 (or branch) in a U-shape, whereby the operator S and each trunk T1 of the tree can be adjusted. , T2 or the distance from the branch, the appropriate work position of the worker S can be easily adjusted, so that the work on the tree becomes very easy. Even if one of the tree trunks T1 and T2 (or branches) is relatively thin and not so strong in strength, the worker S can be obtained by turning the main rope 2 over the two trunks T1 and T2. Can be held safely and work on the tree can be easily performed.

  As shown in FIG. 7, the trunk 21 for work safety belt on wood according to the invention of claim 3 includes a main rope 2, expansion / contraction adjusting tools 4, 4 provided in at least two locations of the main rope 2, and each expansion / contraction It consists of a connecting member 6 that connects the adjuster 4 and the connected parts 12, 13, and 14 of the work safety belt 9, and the connecting members 6 are also provided at both ends 2a and 2b of the main rope 2. When the rope is used, the main rope 2 is turned around the two trunks T1, T2 or branches of the tree T, for example, the expansion / contraction adjustment tools 4 and 4 positioned in the middle of the two trunks T1, T2 or branches are connected to each other. 6 is connected to the connected portion 12 of the work safety belt 9, and the connecting members 6, 6 of both ends 2 a, 2 of the main rope 2 positioned on both sides of the trunks T 1, T 2 or the branches are connected to the work safety belt 9. By connecting to the connected parts 13 and 14 respectively, the worker S has two trunks T. , T2 or branches, and a U-shaped rotation between the operator S and each of the trunks T1, T2 (or branches) with respect to the other trunks T1, T2 (or branches). Since the hanging state is maintained, the body of the worker S does not shake from side to side during the work, the worker S can maintain a stable state, can perform the work efficiently, and temporarily Even if the trunk T1 (or branch) breaks, the trunk line 1 maintains a U-shaped swinging state between the other trunk T2 (or branch) and the worker S, and the danger that the worker falls. Sex can be avoided.

  In addition, since the trunk 21 is provided with the expansion / contraction adjustment tool 4 at at least two locations on the main rope 2, the trunk that is turned around in a U-shape from the operator S to one trunk T1 (or branch). The length of the rope 21 can be adjusted independently between the rope 21 and the trunk 21 that is turned around in a U shape with respect to the other trunk T2 (or branch), whereby the operator S and each trunk T1 of the tree can be adjusted. , T2 or the distance from the branch, the appropriate work position of the worker S can be easily adjusted, so that the work on the tree becomes very easy. Even if one of the tree trunks T1 and T2 (or branches) is relatively thin and not so strong in strength, the worker S can be obtained by turning the main rope 2 over the two trunks T1 and T2. Can be held safely and work on the tree can be easily performed.

  As shown in FIG. 8 (a), the trunk 31 for work safety belt on wood according to the invention of claim 4 is provided with the main rope 2 and the expansion / contraction adjusting tools 4 and 4 provided at at least two locations of the main rope 2. And a connecting member 6 that connects each of the expansion / contraction adjustment tools 4 and the connected parts 12, 13, and 14 of the work safety belt 9, and prevents the expansion / contraction adjustment tool 4 from coming out at both ends 2a and 2b of the main rope 2. Since the stopper 5 is provided, the rope fixing part 20 is provided at the required part of the main rope 2, and the connecting member 6 is provided thereon, the main rope 2 is connected to the two trunks T1, T2 of the tree or It is hung on a branch, both expansion / contraction adjusting tools 4, 4 are connected to the connected parts 13, 14 of the work safety belt 9 via the connecting member 6, and the rope fixing part 20 is connected to the work safety belt via the connecting member 6. By connecting to the 9 connected parts 12, the trunk 31 is The worker S is supported at two points of the two trunks T1 and T2, and between the worker S and each of the trunks T1 and T2, a U-shaped turn is placed on the other trunks T1 and T2. Since the state is maintained, the body of the worker S does not sway from side to side, and the worker S can maintain the stable state and perform the work efficiently. Even if one of the trunks T1 is broken, the trunk 1 can maintain a U-shaped turning state between the other trunk T2 and the worker S, so that the risk of the operator falling can be avoided. .

  In addition, since the rope 31 is provided with expansion / contraction adjusting tools 4 at two locations on the main rope 2, respectively, a rope 31 portion that is U-shaped and twisted between the operator S and one trunk T1. The length of the torso rope 31 that is swung around the other trunk T2 can be adjusted independently of each other, so that the operator can adjust the distance depending on the distance between the worker S and the trunks T1 and T2 of the tree. The proper work position of S can be easily adjusted, and therefore work on the tree becomes very easy. Even if one of the trunks T1 and T2 (or branches) of the tree is relatively thin and not so strong in strength, an operator can be provided by turning the main rope 2 over the two trunks T1 and T2. S can be held safely and work on the tree can be easily performed.

  As described in claim 5, if the expansion / contraction adjustment tool 4 is formed by connecting the one end 3a side of the rope member 3 to the main rope 2 to form the knot 4A, the knot 4A is slightly formed and operated. Although skill is required, the production cost of the telescopic adjustment tool 4 can be greatly reduced.

  As described in claim 6, the expansion / contraction adjustment tool 4 moves along the main rope 2 by performing a predetermined operation, and is prevented from moving on the main rope 2 by applying a load in a predetermined direction. If the lock fitting 4B configured as described above is used, the operation becomes simple and easy, and skill is not required.

  As shown in claim 7, the stopper 5 provided at the end of the main rope 2 is composed of an eye portion formed in a loop shape at the end of the rope, for example, as shown in FIG. According to this, it has a sufficient function as the stopper 5, is easy to manufacture, has a good appearance, and uses this eye part to attach a connecting member made of a hook, a carabiner or the like be able to.

  As described in claim 8, as the rope fixing portion 20, as shown in FIG. 8 (b), the rope fixing portion 20 is composed of a knot 20A that forms a ring 22 in which the main rope 2 is bent and fixed to the intermediate portion. Desirably, according to this, since it forms using a part of main rope 2, although some skill is required for formation of the rope knot 20A, the rope fixing | fixed part 20 can be formed cheaply.

It is a perspective view which shows the use condition of the torso for work safety belts on trees concerning this invention. It is a perspective view which shows the trunk for work safety belts on a tree same as the above. It is a top view which shows the use condition of the trunk line for work safety belts on a tree same as the above. (a)-(f) is explanatory drawing explaining the tying method of a pleasing knot. (a) and (b) show the plunging knot of the expansion / contraction adjustment tool, (a) is an enlarged perspective view of the four-fold knot of the plunging knot, (b) is an enlarged perspective view of the six-knot, c) is a perspective view showing an extension / contraction adjusting tool made of a lock fitting and a connecting member made of an open / close hook. It is a perspective view which shows the torso for other work safety belts on trees which concerns on this invention. It is a perspective view which shows the torso rope for the another work safety belt on trees concerning this invention. (a) is a top view which shows the use condition of the torso rope for the other work safety belt on trees concerning this invention, (b) is a partially expanded view of (a). (a) is a perspective view which shows other embodiment of an expansion-contraction adjustment tool and a connection member, (b) is a top view of the trunk for a work safety belt on a tree which shows the use condition. It is a perspective view which shows other embodiment of an expansion-contraction adjustment tool and a connection member. (a), (b) is a perspective view which shows other embodiment of an expansion-contraction adjustment tool and a connection member, respectively. (a), (b) is a perspective view which shows other embodiment of an expansion-contraction adjustment tool and a connection member, respectively.

  A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a state in which the trunk 1 for a work safety belt on a tree according to the present invention is used on a tree, FIG. FIG. 3 is a perspective view showing the same torso rope 1 in detail, and FIG. The trunk 1 for work safety belts on a tree shown in FIGS. 1 to 3 includes a main rope 2, an expansion / contraction adjustment tool provided at three locations of an intermediate portion of the main rope 2 and both end portions 2 a and 2 b. 4, 4, 4, and each of the expansion / contraction adjustment tools 4 and connecting members 6 that connect the connected portions 12, 13, 14 of the work safety belt 9 worn by the worker S, and both end portions 2 a of the main rope 2. 2b is provided with a stopper 5 for preventing the main rope expansion / contraction adjustment tool 4 from coming out, and each expansion / contraction adjustment tool 4 is integrally provided with a connecting member 6. Each expansion / contraction adjustment tool 4 is composed of a plunging knot 4A by a rope member 3 to be described later, and can be slid along the main rope 2 by grasping with a hand and pushing and pulling, and tension in a predetermined direction. By hooking, it is locked on the main rope 2 and cannot move.

  Each expansion / contraction adjustment tool 4 is composed of a plunging knot 4A formed by linking one end portion 3a side of the rope member 3 to the main rope 2. The plunging knot 4A is held along the main rope 2 by grasping it by hand. It can be slid by pushing and pulling, and can be locked on the main rope 2 by pulling in the direction intersecting the main rope 2 via the rope member 3. Each connecting member 6 includes an openable hook 26 here, but a carabiner or a link can be used in addition to the hook 26.

  The plunging knot 4A forming each expansion / contraction adjusting tool 4 is a well-known one that ties a part of a rope member 3 thinner than the main rope 2 having a large diameter. The tying method is shown in FIGS. ) In the state in which the rope member 3 formed in an endless ring shape is bent into an elongated shape, the one end side bent portion 3a is orthogonally crossed on the main rope 2 (see (a)), and in this state, the rope member 3 The other end side bent portion 3b is rotated downward from the main rope 2, and passed upward from between the one end side bent portion 3a and the main rope 2 (see (b) and (c)), and the rope member passed through this upper portion The other end side bent portion 3b of 3 is returned downward. Here, as shown in (d), it is confirmed whether the two rope members 3 are inside the one end side bent portion 3a, and as shown in (e), the rope member bound to the main rope 2 By loosening the three portions and again passing the other end side bent portion 3b of the rope member 3 through the one end side bent portion 3a and pulling it down, a four-turn plunging knot 4A as shown in (f) is formed. . FIG. 5 (a) shows an enlarged view of the plunge knot 4A shown in FIG. 5 (f).

  FIG. 5 (b) shows a 6-turn plunging knot 4A. The 6-turn plunging knot 4A loosens the 4-turn plunging knot 4A in the state shown in FIG. It can be formed by pulling down the end 3b of the rope member 3 shown in (f) through the bent portion 3a. In this embodiment, the plunging knot 4A is used as the rope knot, but not only the plunging knot 4A, but when the rope member 3 is loosened, the rope member 3 can be moved freely and the rope member 3 is tensioned. Any rope knot may be used as long as the knot 4A is tightened to prevent movement.

  4 (a) to (f), the base end portion (one end portion) 3a forms the main rope expansion / contraction adjustment tool 4 with respect to the main rope 2 by the connecting method shown in FIG. As shown in FIG. 2, a resin tubular member 8 is fitted on the side, and a mounting ring 26 a of an open / close hook 26 as a connecting member 6 is attached to a bent portion 3 b protruding from the tubular member 8. . The stoppers 5 provided at both end portions 2 a and 2 b of the main rope 2 are eye portions formed in a loop shape at the end portions of the main rope 2. Thus, if the stopper 5 is made of an eye portion, it has a sufficient function as the stopper 5, is easy to manufacture, has a good appearance, and uses this eye portion to make a hook or carabiner. It is possible to easily attach the connecting member 6 made of the like. The stopper 5 is not limited to the eye portion as shown in this embodiment, and the main rope 2 may be simply tied so that a knot can be formed at the end thereof, and the main rope 2 is attached to the end portion of the main rope 2. A metal piece having a larger diameter may be fixed.

  As the work safety belt 9 worn by the worker S, in addition to the full harness safety belt as shown in FIG. 1, an easy harness safety belt, a sit harness safety belt, a thigh belt safety belt, a trunk A belt-type safety belt or the like can be used. And the connection parts 12, 13, and 14 of the work safety belt | band | zone 9 are provided in the both sides and front part of the waist belt 10 of the safety belt | band | zone 10 in embodiment shown in FIGS. However, it may be provided anywhere on the torso belt 10, and is not limited to such a torso belt, but may be provided on a chest belt, a shoulder belt, or the like of various work safety belts.

  In using the trunk 1 for a work safety belt on a tree having the above-described configuration, the worker S, as shown in FIG. For connecting the connecting member 6 (open / close-type hook 26) connected to the expansion / contraction adjusting tool 4 located in the middle part of the main rope 2 as a connected part on the front side of the body belt 10 of the work safety belt 9 Connected to the ring 12, the both ends 2a, 2b of the main rope 2 are turned around the trunks T1, T2 divided into two branches of the tree T, and the expansion / contraction adjusting tool 4 on the both ends 2a, 2b side of the main rope 2 , 4 are connected to connecting rings 13 and 14 as connected parts on both sides of the waist belt 10 to form a state as shown in FIG. The main rope 2 in the state shown in FIG. 1 and the rope member 3 of each expansion / contraction adjusting tool 4 are in a relaxed state. As shown in FIG. 3, the trunk belt 10 of the work safety belt 9 on the tree is composed of an outer fastening belt 10a and a trunk rest belt 10b on the inner side, and the front side and both sides of the outer fastening belt 10a. Rings for connection (connected parts) 12 to 14 are attached to. Further, the tree on which the main rope 2 is turned is not limited to the two trunks T1 and T2 divided into two branches, but may be two relatively thick branches separated from the trunk, or two trunks and branches.

  Thus, the worker S adjusts the main rope 2 to extend and contract so as to ensure an optimum posture for cutting the trunks T1 and T2 on the tree. In the expansion / contraction adjustment of the main rope 2, the worker S sufficiently loosens the rope member 3 of the expansion / contraction adjustment tool 4 on both ends 2 a and 2 b of the main rope 2 and the rope member 3 of the expansion / contraction adjustment tool 4 in the middle. From the state, grasp the necessary expansion / contraction adjustment tool 4 and slide it along the main rope 2 to adjust the distance between the position of the worker S and the trunks T1 and T2 as desired, and to secure an optimal working posture. The rope member 3 may be tensioned in a state where the waist is stretched backward, and the expansion / contraction adjustment tool 4 may be locked onto the main rope 2.

  FIG. 3 shows that the expansion / contraction adjustment tools 4 and 4 on both ends 2a and 2b of the main rope 2 and the expansion / contraction adjustment tool 4 in the middle thereof are appropriately slid along the main rope 2 as described above. This shows a state in which the operator S can secure an optimal working posture, and the rope members 3, 3 and 3 of the main rope 2 and the three telescopic adjustment tools 4, 4 and 4 are in tension with each other. is there. Further, from the state shown in FIG. 3, when the worker S wants to secure a working posture that is slightly moved to the right side of the figure, for example, the posture of the worker S once approaches the center side of the main rope 2. From the state where the rope member 3 of each expansion / contraction adjustment tool 4 has been moved and moved, the knot 4A portion of the expansion / contraction adjustment tool 4 on the right side of FIG. 3 is grasped and slid along the main rope 2 so as to approach the trunk T1 side. On the other hand, after grasping the knot 4A portion of the expansion / contraction adjustment tool 4 on the left side of FIG. 3 and sliding it appropriately along the main rope 2 away from the trunk T2 side, the operator S moves to the center of the main rope 2 Just move away from the side.

  As described above, the trunk 1 for work safety belts on trees shown in FIGS. 1 to 3 includes a main rope 2, expansion / contraction adjustment tools 4, 4, 4 provided at three locations of the main rope 2, and each expansion / contraction Consists of a connecting member 6 that connects the adjusting tool 4 and a connecting ring ((connected part) 12, 13, and 14 provided in the work safety belt 9, and expands and contracts at both ends 2a and 2b of the main rope 2, respectively. Since the stoppers 5 and 5 for preventing the adjustment tool 4 from coming out are provided, the main rope 2 is turned around the two trunks T1 and T2 of the tree when using the torso, and between the two trunks T1 and T2. The expansion / contraction adjustment tool 4 is connected to a connecting ring (connected portion) 12 on the front side of the body belt 10 via a connecting member 6, and two expansion / contraction adjustments located on both sides of the two trunks T <b> 1 and T <b> 2. The connecting members 6 and 6 of the tools 4 and 4 are connected to both sides of the body belt 10. By connecting to the rings (connected parts) 13 and 14, the rope 1 is supported by the worker S at two points of two trunks T 1 and T 2 as shown in FIG. Between the operator S and each of the trunks T1 and T2, the U-shaped swinging state is maintained with respect to the other trunks T1 and T2. Therefore, the operator S can maintain a stable state, can efficiently perform the work, and even if one of the trunks T1 (or branches) is broken, the torso 1 is in contact with the other trunk T2 (or branches). ) And the worker S, the U-shaped turning state is maintained, so that the danger of the worker falling can be avoided.

  In addition, since the trunk for the work safety belt on the tree is provided with the expansion / contraction adjusting tools 4 on both ends 2a and 2b side and the middle part of the main rope 2, respectively, as shown in FIG. The length can be adjusted independently for the trunk 1 part that is turned in a U-shape against one trunk T1 and the trunk 1 that is turned in a U-shape against the other trunk T2. Thus, the proper work position of the worker S can be easily adjusted according to the distance between the worker S and each trunk T1, T2 or branch of the tree, and therefore, work such as cutting on the tree can be performed. It becomes very easy to do. Even if one of the trunks T1, T2 (or branches) of the tree is relatively thin and not so strong in strength, the operator can be turned by turning the main rope 2 around the two trunks T1, T2. While being able to hold | maintain safely, work, such as a cutting | disconnection on a tree, can be performed easily.

  In the trunk 1 for work safety belts on trees described with reference to FIGS. 1 to 3, the expansion / contraction adjustment tool 4 is provided at three locations on the intermediate portion side of the main rope 2 and the two end portions 2a and 2b. The number of tools 4 is not limited to three, and four or more expansion / contraction adjusting tools 4 may be provided on the main rope 2.

  FIG. 6 shows another torso rope 11 for work safety belts on trees according to the present invention. The rope 11 includes a main rope 2, expansion / contraction adjustment tools 4, 4 provided at two locations on the main rope 2, and a connection ring for each of the expansion / contraction adjustment tools 4 and a work safety belt 9 attached to the operator S. (Connected part) It consists of the connection member 6 which connects 12, 13, and 14, and each expansion-contraction adjustment tool 4 consists of the plunging knot 4A by the rope member 3 like the trunk 1 shown in FIGS. Thus, it can be slid along the main rope 2 by grasping with a hand and pushing and pulling, and can be locked on the main rope 2 by pulling in a direction intersecting with the main rope 2 via the rope member 3. It has become. A stopper 5 is provided at one end 2a of the main rope 2 to prevent the expansion / contraction adjustment tool 4 from coming out, and a connecting member 6 comprising an open / close hook 26 is connected to the other end 2b. 4 is connected to the connecting member 6 including the same opening / closing hook 26. The stopper 5 is composed of an eye portion formed in a loop shape at one end 2 a of the main rope 2.

  In using the trunk 11 for the work safety belt on the tree, the worker S puts the main rope 2 on the two trunks T1, T1 of the tree T with the work safety belt 9 on the tree as shown in FIG. The expansion / contraction adjustment tool 4 located in the middle of the two trunks T1 and T2 is turned around T2 and connected to the front side connection ring (connected part) 12 of the body belt 10 of the work safety belt 9 via the connection member 6. The expansion / contraction adjustment tool 4 on the one end 2a side of the main rope 2 and the other end 2b of the main rope 2 are connected to the connecting rings (connected parts) on the both sides of the body belt 10 via the connecting members 6, respectively. ) By connecting to 13, 14, the torso rope 11 is supported by the worker S at two points of the two trunks T1, T2, and between the worker S and each of the trunks T1, T2, the other Because the U-shaped hanging state is maintained with respect to the trunks T1 and T2, Body of the operator S is without such swaying from side to side, the operator S can remain stable, it can be performed with good efficiency work. Even if one of the trunks T1 is broken, the trunk 11 is maintained in a U-shaped turning state between the other trunk T2 and the worker S, so there is a risk that the worker will fall. It can be avoided.

  Further, since the trunk 11 for the work safety belt on the tree is provided with the expansion / contraction adjustment tools 4 and 4 at two locations on the main rope 2, the operator S turns the U rope around one trunk T1. The length of the main rope 2 can be adjusted independently for the trunk 1 part and the trunk 1 part that is turned around in a U shape with respect to the other trunk T2, whereby the trunks of the operator S and the tree can be adjusted. The appropriate work position of the worker S can be easily adjusted according to the distance between T1 and T2, and therefore work on the tree can be easily performed. Further, even if one of the tree trunks T1 and T2 (or branches) is relatively thin and not so strong in strength, the worker S can be obtained by turning the main rope 2 over the two trunks T1 and T2. Can be held safely and work on the tree can be easily performed. In the trunk rope 11 of the embodiment shown in FIG. 6, the main rope 2 is provided with two expansion / contraction adjustment tools 4 and 4. However, the expansion / contraction adjustment tool 4 is not limited to two, and three or more expansion adjustment tools 4 may be provided. Good.

  FIG. 7 shows another trunk 21 for work safety belts on trees according to the present invention. This torso 21 is connected to the main rope 2, expansion / contraction adjustment tools 4, 4 provided at two intermediate portions of the main rope 2, and the expansion / contraction adjustment tool 4 and the work safety belt 9 worn by the operator S. The connecting member 6 is connected to the both ends 2a and 2b of the main rope 2, and each connecting member 6 is openable and closable. It consists of a hook 26. Each expansion / contraction adjusting tool 4 is composed of a plunging knot 4A by the rope member 3 as in the case of the torso ropes 1 and 11, and can be slid along the main rope 2 by grasping with a hand and pushing and pulling. It can be locked on the main rope 2 by pulling in the direction intersecting the main rope 2 via the rope member 3.

  In use of the rope 21, the worker S wears the main rope 2 on the tree T as shown in FIG. 7 at a predetermined position of the tree with the work safety belt 9 on the tree as shown in FIG. The connecting members 6 and 6 on both ends 2a and 2b of the main rope 2 are connected to connecting rings (connected parts) 13 and 14 on both sides of the body belt 10, respectively. Then, the two expansion / contraction adjustment tools 4 and 4 positioned between the two trunks T1 and T2 are connected to the connecting ring (connected portion) 12 on the front side of the body belt 10 through the connecting member 6, respectively. . As a result, the trunk 21 is supported by the worker S at two points of the two trunks T1 and T2, and between the worker S and each of the trunks T1 and T2, with respect to the other trunks T1 and T2. Thus, since the U-shaped turning state is maintained, the body of the worker S does not sway from side to side, and the worker S can maintain the stable state and perform the work efficiently. Even if one of the trunks T1 is broken, the trunk line 1 maintains a U-shaped hanging state between the other trunk T2 and the worker S, thus avoiding the danger of the operator falling. it can.

  Further, since the rope 21 is provided with the expansion / contraction adjustment tool 4 at two intermediate portions of the main rope 2, respectively, the rope 21 is turned around in a U shape from the operator S to one trunk T1. The length of the main rope 2 can be adjusted independently of the trunk 21 that is turned in a U-shape with respect to the other trunk T2, so that the operator S and the trunks T1, T2 of the tree can be adjusted. The appropriate work position of the worker S can be easily adjusted according to the distance, and therefore the work on the tree becomes very easy. Even if one of the tree trunks T1 and T2 (or branches) is relatively thin and not very strong in strength, the operator can be turned by turning the main rope 2 over the two trunks T1 and T2. While being able to hold | maintain safely, the operation | work on a tree can be performed easily. In the trunk 21 of the embodiment shown in FIG. 7, the two expansion / contraction adjustment tools 4, 4 are provided in the middle portion of the main rope 2, but the expansion / contraction adjustment tool 4 is not limited to two, but three You may provide above.

  Each of the expansion / contraction adjustment tools 4 of the trunks 1, 11 and 21 for the on-tree work safety belt shown in FIGS. 1 to 3 and FIGS. 6 to 7 described above has been described with reference to (a) to (f) of FIG. The rope member 3 is composed of a plunging knot 4A, but the expansion / contraction adjustment tool 4 is not limited to such a plunging knot 4A, but is composed of a lock fitting 4B as shown in FIG. 5 (c). But you can. That is, the lock fitting 4B shown in (c) is prevented from moving on the main rope 2 by the lock action of the lock member 15 that operates by applying a load in a predetermined direction, and the lock member 4B is released by releasing the load. The lock member 15 is configured to be movable on the main rope 2 by pushing and pulling the metal fitting body 16 in the unlocked state, and the lock member 15 holds the main rope 2. It is pivotally attached to a metal body 16 having a substantially U-shaped cross section by a pivot 19, and has an eccentric cam portion 17 that can be brought into and out of contact with the main rope 2 at one end, and a mounting hole 18 at the other end. The lock member 15 is locked by a spring (not shown) so that the eccentric cam portion 17 is separated from the main rope 2 and the bracket body 16 can slide along the main rope 2. The operation cord body 25 urged to the release position and attached to the attachment hole 18 of the lock member 15 is moved in a predetermined direction against the spring (for example, diagonally right upward with respect to FIG. 5C). By pulling, the lock member 15 rotates about the pivot 19, the eccentric cam portion 17 comes into pressure contact with the main rope 2, and the metal fitting body 16 is locked onto the main rope 2 by the pressure contact friction force. ing.

  A lock fitting 4B shown in FIG. 5 (c) has a ring 25a provided at one end of the operating string 25 attached to the attachment hole 18 of the lock piece 15, and a similar ring 25b provided at the other end. The attachment ring 26a of the open / close hook 26 (the connecting member 6) is attached. Note that the lock fitting 4B shown in FIG. 5C is an example, and the movement on the main rope 2 is prevented by the locking action of the lock member 15 that is activated by applying a load in a predetermined direction. Any configuration can be used as long as the lock member 15 is unlocked by releasing the load, and the metal fitting body 16 can be moved along the main rope 2 in the unlocked state. .

  (A) of FIG. 8 shows the use state of yet another on-tree work safety belt trunk 31 according to the present invention, which is composed of the main rope 2 and both end portions 2a of the main rope 2. Connection connecting the two expansion / contraction adjustment tools 4 and 4 provided on the 2b side, and the connection rings (connected parts) 12, 13 and 14 of the work safety belt 9 attached to each expansion / contraction adjustment tool 4 and the operator S A stopper 5 is provided on each end 2a, 2b of the main rope 2 to prevent the expansion / contraction adjustment tool 4 from coming out, and a rope fixing part 20 is provided in the middle part of the main rope 2, and this rope fixing part. 20 is provided with a connecting member 6 made of, for example, a carabiner 24. When the trunk 31 is used, the main rope 2 is turned around the two trunks T1 and T2 of the tree as shown in the figure, and both ends of the main rope 2 are connected. Expansion / contraction adjustment tool 4 on the side of parts 2a and 2b 4 is connected to connecting rings (connected portions) 13 and 14 on both sides of the belt 10 via connecting members 6, and the rope fixing portions 20 on the intermediate side of the main rope 2 are connected to the connecting members 6. It connects with the ring for connection (to-be-connected part) 12 in the front side of the trunk | drum belt through. Each expansion / contraction adjustment tool 4 is composed of a plunging knot 4A made of a rope member 3 in the same manner as the above-described trunk lines 1, 11 and 21, and is slid along the main rope 2 by pushing and pulling it with a hand. It can be locked on the main rope 2 by pulling in the direction intersecting the main rope 2 via the rope member 3. The connecting member 6 of the rope fixing portion 20 is not limited to the carabiner 24 as shown in FIG. 8B, but may be an open / close hook or a link.

  The rope fixing portion 20 provided in the middle portion of the main rope 2 is formed of a rope knot that forms a ring 22 that is bent to the middle portion and fixed to the middle portion. Specifically, FIG. There are also a butterfly knot 20A as shown in FIG. According to the rope fixing part 20 formed by such a butterfly knot 20A, a double eight knot or the like, since the rope fixing part 20 is formed using a part of the main rope 2, there is an advantage that the rope fixing part 20 can be formed easily and easily. is there.

  The main rope 2, the expansion / contraction adjustment tool 4, the stopper 5, and the connecting member 6 of the tree work safety belt trunk 31 are exactly the same as the trunks 1, 11, and 21.

  When using the rope 31, the worker S is equipped with a work safety belt 9 on the tree as shown in FIG. 1, and at a predetermined position of the tree, as shown in FIG. 2 is looped over two trunks T1 and T2 of the tree, and the expansion / contraction adjustment tools 4 and 4 on both ends 2a and 2b of the main rope 2 are respectively located on both sides of the trunk belt 10 via the connecting members 6. A connecting member 6 comprising a carabiner 24 connected to connecting rings (connected parts) 13 and 14 and attached to a ring 22 of a rope fixing part 20 at an intermediate part of the main rope 2 is located on the front side of the trunk belt 10. Connected to a connecting ring (connected part) 12. As a result, the trunk 31 is supported by the worker S at two points of the two trunks T1 and T2, and between the worker S and each of the trunks T1 and T2, with respect to the other trunks T1 and T2. Since the U-shaped swung state is maintained, the body of the worker S does not sway from side to side, and the worker S can maintain the stable state and perform the work efficiently. Even if one of the trunks T1 is broken, the trunk 1 can maintain a U-shaped hanging state between the other trunk T2 and the worker S, so that danger can be avoided if the worker falls. it can.

  In addition, since the rope 31 is provided with expansion / contraction adjusting tools 4 at two locations on the main rope 2, respectively, a rope 31 portion that is turned around in a U shape between the operator S and one trunk T1. The length of the torso rope 31 that has been turned around in a U-shape with the other trunk T2 can be adjusted independently, so that the distance between the worker S and each trunk T1, T2 of the tree can be adjusted. Accordingly, the proper work position of the worker S can be easily adjusted, and therefore work on the tree becomes very easy. Even if the tree trunks T1 and T2 are relatively thin and not so strong in strength, the operator can be safely held by turning the main rope 2 around the two trunks T1 and T2, Work on trees can be performed easily. In the trunk rope 31 of the embodiment shown in FIG. 8, the main rope 2 is provided with two expansion / contraction adjustment tools 4 and 4, but the expansion / contraction adjustment tool 4 is not limited to two, and three or more are provided. Also good.

  9A shows an embodiment in which a connecting member 6 made of a carabiner 27 is detachably attached to an expansion / contraction adjusting tool 4 made of a lock fitting 4B similar to that shown in FIG. 5C. Yes. The carabiner 27 is merely an example, but is substantially pivotally attached to a substantially C-shaped main body portion 27a and a lower end side of the main body portion 27a via a pivot shaft 27b, and closes the opening of the C-shaped main body portion 27a. Rotating part 27c, and a safety ring 27d screwed over the free end part of the rotating part 27c and the upper end part side of the main body part 27a. After pulling in from the upper end side of the portion 27a to the rotating portion 27c side, the rotating portion 27c is rotated around the pivot 27b to open the opening of the C-shaped main body portion 27a. It will be in the state which can be attached by inserting in the attachment hole 18 provided in the lock member 15. FIG.

  (B) of FIG. 9 shows the use state of the trunk 1 for work safety belts on a tree provided with the expansion / contraction adjusting tool 4 made of the lock fitting 4B and the connecting member 6 made of the carabiner 27 as described above. The usage pattern is the same as that of the torso rope 1 shown in FIGS.

  FIG. 10 shows an embodiment in which a connecting member 6 composed of an openable hook 26 and a carabiner 27 is detachably attached to the expansion / contraction adjustment tool 4 composed of a lock fitting 4C having a cam lever locking mechanism. The lock metal fitting 4C has a pair of front and rear cam levers 29, 29 each having an eccentric cam 29a, 29a formed on the lower end side of a metal fitting body 28 having a substantially U-shaped cross section that holds the main rope 2, and is pivotally attached by a pivot 30 respectively. The upper end portions of both cam levers 29 and 29 are pivotally connected to each other by a pivot shaft 32 by a grip lever 35, and an attachment piece 33 is attached to one end portion of the grip lever 35, and both cam levers 29 are always attached by a spring (not shown). , 29 are urged so that the respective eccentric cams 29a, 29a are pressed against the main rope 2 as shown in the figure, and the hook portion 26b of the open / close hook 26 is attached to the ring portion 33a of the attachment portion 33. At the same time, the carabiner 27 is attached to the proximal end side attachment ring 26 a of the hook 26.

  Thus, in the state shown in FIG. 10, the lock fitting 4C can move in the direction of arrow a in the figure by grasping the fitting main body 28, but even if it is moved in the direction opposite to arrow a, both cam levers 29, The eccentric cams 29a and 29a are locked in one direction and cannot move. When the grip lever 31 is gripped and pressed in the direction of the arrow b, both cam levers 29 and 29 are tilted in the direction of the arrow c, and the eccentric cams. 29a and 29a are separated from the main rope 2 to be unlocked, and the metal fitting body 28 can be moved in either the direction of arrow a or the opposite direction, and the connecting member 6 is tilted to the right with respect to FIG. 10 from the state shown in FIG. By pulling in the direction, the locked state by the eccentric cams 29 a and 29 a is further strengthened, and the metal fitting body 28 is firmly fixed on the main rope 2.

  Further, the openable hook 26 shown in FIG. 10 has a well-known structure, and the opening of the hook portion 26b is normally closed by a stopper 26c, and the stopper 526c is locked at that position, but the lock release lever 26d. When the tip side is pushed in the direction of the arrow d in the figure, the stopper 26c is unlocked. By pushing the tip side of the stopper 26c in the direction of the arrow e, the opening of the hook portion 26b is opened. The carabiner 27 has the same structure as that shown in FIG.

  In the use of the ropes 1, 11, 21, 31 in which the connecting member 6 including the openable hook 26 and the carabiner 27 as shown in FIG. 10 is attached to the telescopic adjustment tool 4, the openable hook 26, the carabiner 27, The carabiner 27 of the connecting member 6, which is connected to each other, is first attached to the connected portion of the operator's trunk belt 10, and then the open / close hook 26 hook portion 26 b of the connecting member 6 is the expansion / contraction adjustment tool 4. If it attaches to the ring part 33a of the attaching part piece 33 of the lock | rock metal fitting 4C, a connection operation will become easy.

  The expansion / contraction adjustment tool 4 and the connection member 6 shown in FIG. 9A and the expansion / contraction adjustment tool 4 and the connection member 6 shown in FIG. 10 are all attached to the expansion / contraction adjustment tool 4 in a detachable manner. 11 (a) and 11 (b) and FIG. 12 (a) and 12 (b) are all cases in which the connecting member 6 is integrally attached to the expansion / contraction adjustment tool 4 so as not to be removable. Show. First, FIG. 11 (a) shows a connecting member 6 comprising an opening / closing hook 26 similar to that shown in FIG. 10 to the expansion / contraction adjustment tool 4 comprising the same lock fitting 4B as shown in FIG. 9 (a). The base end side attaching portion 26a of the hook 26 is joined to the upper end portion of the lock member 15 pivotally attached to the metal fitting body 16 of the lock metal fitting 4B by, for example, welding.

  FIG. 11 (b) shows that the connecting member 6 consisting of the same open / close hook 26 as shown in FIG. 10 is integrally formed with the expansion / contraction adjustment tool 4 consisting of the same lock fitting 4B as shown in FIG. 9 (a). The base end side mounting portion 26a of the hook 26 is connected to the upper end portion of the lock member 15 pivotally attached to the metal fitting body 16 of the lock metal fitting 4B by the connecting shaft body 34, and the vertical axis G of the hook 26 is attached. It is integrally connected so that it can rotate around. In this way, according to the connecting member 6 that is integrally connected to the expansion / contraction adjustment tool 4 so as to be rotatable, the connecting member 6 can rotate around the vertical axis G as shown by the arrow in FIG. In use of 1,11,21,31, it is possible to prevent the main rope 2 and the rope member 3 from being twisted.

  FIG. 12 (a) shows an example in which a connecting member 6 made of an open / close hook 26 as shown in FIG. 10 is integrally attached to an expansion / contraction adjustment tool 4 made of a lock fitting 4C similar to that shown in FIG. The base end side mounting portion 26a of the hook 26 is integrally attached to one end portion of the grip lever 35 of the lock fitting 4C by screws or the like. FIG. 12 (b) shows an example in which a connecting member 6 comprising an open / close hook 26 as shown in FIG. 10 is integrally attached to the expansion / contraction adjustment tool 4 comprising the same lock fitting 4C as shown in FIG. The mounting member 36 is integrally attached to one end portion of the grip lever 35 of the lock fitting 4C with a screw or the like, and the base end side mounting portion 26a of the hook 26 is attached to the mounting member 36, and the hook 26 is They are integrally connected so as to be rotatable around the vertical axis G. In the connecting member 6 as shown in FIG. 12 (b), the connecting member 6 can rotate with respect to the expansion / contraction adjusting tool 4. 3 can be prevented from being twisted.

1 Trunk for work safety belt on tree 2 Main rope 3 Rope member 4 Expansion / contraction adjustment tool 4A Plunging knot (extension adjustment tool)
4B lock bracket (extension adjustment tool)
4C lock bracket (extension adjustment tool)
5 Stopper 6 Connecting member T Tree T1, T2 Tree trunk 9 Tree work safety belt 10 Trunk belt 11 Tree work safety belt trunk 12-12 Connection ring (connected part)
20 rope fixing part 20A butterfly knot (rope fixing part)
20B Lock fitting (rope fixing part)
21 Woodwork rope for work safety belt on wood 25 String for operation 26 Opening and closing type hook (connection member)
27 Carabiner (connection member)
31 Trunk for work safety belt on trees

Claims (8)

  It consists of a main rope, expansion / contraction adjustment tools provided at at least three locations on the main rope, and a connection member that connects each expansion / contraction adjustment tool and the connected portion of the work safety belt worn by the worker. , It moves along the main rope by performing a predetermined operation, and the movement on the main rope is prevented by applying a load in a predetermined direction, and the both ends of the main rope can be adjusted A stopper is provided to prevent the tool from coming out. When using the rope, the main rope is turned around the two trunks or branches of the tree, and the expansion / contraction adjustment tool located between the two trunks or branches is connected via the connecting member. Work on a tree connected to a connected part of a work safety belt and connected to the connected parts of the work safety belt via two connecting members respectively connected to the two expansion / contraction adjustment tools located on both sides of the two trunks or branches Safety belt Dotsuna.   It consists of a main rope, expansion / contraction adjustment tools provided in at least two locations of the main rope, and a connection member that connects each expansion / contraction adjustment tool and the connected portion of the work safety belt worn by the worker. It moves along the main rope by performing a predetermined operation, and is prevented from moving on the main rope by applying a load in a predetermined direction. A stopper that prevents the main rope from coming out is provided, and a connecting member that is connected to the connected part of the work safety belt is provided at the other end of the main rope. When using the rope, the main rope is turned around the two trunks or branches of the tree. The expansion / contraction adjustment tool located between the two trunks or branches is connected to the connected portion of the work safety belt through the connection member, and the expansion / contraction adjustment tool on the one end side of the main rope and the other end of the main rope Part Trees on working safety belt for Dotsuna which is adapted for coupling to the coupled portion of the work safety belt through the respective connecting member.   It consists of a main rope, expansion / contraction adjustment tools provided in at least two locations of the main rope, and a connection member that connects each expansion / contraction adjustment tool and the connected portion of the work safety belt worn by the worker. The main rope moves along the main rope by performing a predetermined operation, and is prevented from moving on the main rope by applying a load in a predetermined direction. A connecting member to be connected to the to-be-connected portion is provided, and when using the torso, the main rope is turned around the two trunks or branches of the tree, and the expansion / contraction adjustment tool located between the two trunks or branches is connected respectively. A trunk for a work safety belt on a tree, which is connected to a connected portion of a work safety belt via a member, and both ends of the main rope are connected to a connected portion of the work safety belt via a connecting member.   It consists of a main rope, expansion / contraction adjustment tools provided in at least two locations of the main rope, and a connection member that connects each expansion / contraction adjustment tool and the connected portion of the work safety belt worn by the worker. , It moves along the main rope by performing a predetermined operation, and the movement on the main rope is prevented by applying a load in a predetermined direction, and the both ends of the main rope can be adjusted A stopper that prevents the tool from coming out is provided, a rope fixing part is provided at the required part of the main rope, and a connecting member that is connected to the connected part of the work safety belt is provided for this. Are connected to the connected portion of the work safety belt through the connecting members, and the rope fixing portion of the main rope is connected to the covered portion of the work safety belt through the connecting members. Trees on working safety belt for Dotsuna which is adapted to couple to the imaging unit.   The expansion / contraction adjustment tool is a trunk for a work safety belt on a tree according to any one of claims 1 to 4, wherein a knot is formed by connecting one end of a rope member to a main rope.   The expansion / contraction adjustment tool comprises a lock fitting configured to move along a main rope by performing a predetermined operation and to be prevented from moving on the main rope when a load in a predetermined direction is applied. The torso for work safety belts on trees according to any one of -4.   The trunk for a work safety belt on a tree according to claim 1, wherein the stopper provided at the end portion of the main rope comprises an eye portion formed in a loop shape at the rope end portion.   The rope for a tree work safety belt according to claim 4, wherein the rope fixing part is formed by forming a ring in which a main rope is bent and fixed to an intermediate part.

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