JP6063699B2 - Securing tree work posture stability - Google Patents

Description

  The present invention relates to a tree work posture stability securing method capable of ensuring the stability of a worker's work posture on a tree when climbing a tree and performing operations such as pruning and cutting the tree.

  Traditionally, a double rope system has been used to climb trees. In this double rope system, a single long rope is hung on a tree branch and folded back to form a double rope state. For example, two long ropes extending from the tree branch have two long ropes at the end of one long rope portion. Form a heavy 8-shaped knot, connect the looped part to the safety band of yourself (worker) with a carabiner, and attach a looped loop at one end to the long rope part extending from the double 8-shaped knot. A friction knot is formed by wrapping the other end of the short rope material provided, and a carabiner is attached to the ring at one end of the short rope material, and this carabiner is attached to the safety belt. By pulling the lower long rope, and then pushing up the friction knot and repeating this, you can climb while ensuring safety.

  When climbing to the required height of trees with such a double rope system and pruning or cutting branches at the climbed position, the tree work posture is extremely unstable as it is, and the work is accurate and safe Conventionally, a ready-made lanyard pre-installed by the worker is hung around the required part of the tree, and both ends of the tree are connected to the worker's safety belt, and the tree work posture is stabilized by this lanyard. We are working in a secured state.

  According to the conventional method as described above, in order to stabilize the tree work posture, a ready-made lanyard is prepared in addition to the long rope, and this ready-made lanyard is used as a harness during tree work. Must be installed. Since these ready-made lanyards vary in length in the range of 2 to 10 m, they have to be replaced with ones necessary for each work, which is very troublesome.

  In view of the above circumstances, the present invention eliminates the hassle of replacing a lanyard in a conventional method by forming a double rope system and a lanyard system with a single long rope, and can perform work efficiently. An object is to provide a method for ensuring the stability of tree work posture.

  Means for solving the above problems will be described with reference numerals in the embodiments described later. The invention according to claim 1 is a safety belt for the operator S at one end of one long rope 2. A first coupler 4A that is detachably coupled to 5 is attached, a first telescopic adjustment tool 3A is provided on the long rope 2 that is a required length away from the first coupler 4A, and the first telescopic adjustment tool 3A has a first A second coupler 4B similar to the first coupler 4A is attached, and the long rope 2 portion from the first coupler 4A to the first telescopic adjustment tool 3A is a double rope system DRS, and from the first telescopic adjustment tool 3A A second expansion / contraction adjustment tool 3B and a third expansion / contraction adjustment tool 3C are provided on the long rope 2 separated rearward at a required interval, and the first coupler 4A is provided to the second and third expansion / contraction adjustment tools 3B and 3C. The third and fourth couplers 4C and 4D similar to the above are attached, and the second extension A method for ensuring tree work posture stability using a rope device 1 in which a lanyard system LYS is formed by a portion of a long rope 2 from an adjustment tool 3B to a third expansion / contraction adjustment tool 3C. A double rope system DRS is hung on an upper anchor 9 consisting of a branch portion or a branch B of a tree T trunk, and the first and second couplers 4A and 4B are connected to the safety belt 5, and this double rope system DRS is used. The lanyard system LYS is hung on the lower anchor 10 composed of the branching portion or the branch B of the tree T trunk near the climbed position, and the third and fourth couplers 4C and 4D are connected to the safety belt 5 It is characterized in that the stability of the tree work posture is ensured by connecting to.

Claim 2 is the tree work posture stability securing method according to claim 1, wherein a double rope system DRS is applied to the upper anchor 9 consisting of a branch part or a branch B of a tree T trunk at a required height from the ground, In a state where the first and second couplers 4A and 4B are coupled to the safety belt 5, the double rope system DRS is used to climb to the required height, and the branch portion or branch B of the tree T trunk near the climbed position. The lower anchor 10 made of lanyard system LYS is hung, and the third and fourth couplers 4C and 4D are connected to the safety belt, thereby pruning and cutting the tree T in a state where the stability of the tree work is secured. Then, the first coupler 4A is disconnected from the safety belt 5, and the double rope system DRS is hung on the required upper anchor 9 above the upper anchor 9, and the first coupler 4A After connecting to the safety belt 5, the third and fourth couplers 4C and 4D are disconnected from the safety belt 5 and climbed to the required height using the double rope system DRS. A lanyard system LYS is hung on the lower anchor 10 consisting of a trunk branch or branch B, and the third and fourth couplers 4C and 4D are connected to the safety belt 5 to ensure the stability of the tree work posture . It is characterized by that.

  Claim 3 is the tree work posture stability securing method according to claim 1 or 2, wherein the first to third expansion / contraction adjustment tools 3A, 3B, 3C are arranged so that one end side of the short rope material 11 is connected to the long rope 2 It is characterized in that the knots 33 and 34 are formed by being wound around a wire.

  Claim 4 is the tree work posture stability securing method according to claim 1 or 2, wherein the first to third expansion / contraction adjustment tools 3A, 3B, 3C are along the long rope 2 by performing a predetermined operation. And a lock fitting 35 configured to be prevented from moving on the long rope 2 when a load in a predetermined direction is applied.

  The effect of the invention by the above-described solution means will be described with reference numerals of embodiments described later. The tree work posture stability securing method of the invention according to claim 1 is one end of one long rope 2. A rope device 1 having a lanyard system LYS formed behind the double rope system DRS and a double rope system DRS on the side is used to double the upper anchor 9 consisting of a branch portion or a branch B of a tree T trunk at a required height. With the rope system DRS, the first and second couplers 4A, 4B are connected to the safety belt 5, and the double rope system DRS is used to climb to the required height, and the tree T near the climbed position By hanging the lanyard system LYS on the lower anchor 10 composed of the trunk branch or branch B and connecting the third and fourth couplers 4C and 4D to the safety belt 5 The lanyard system LYS is integrally formed on the same rope 2 as the double rope system DRS, so that it can work on an off-the-shelf lanyard like a conventional double rope system. Therefore, it is not necessary to replace each and every operation can be performed efficiently.

  According to the tree work posture stability securing method of the invention according to claim 2, by changing the double rope system DRS to the upper anchor 9 that is gradually increased, various points from the low position to the high position of the tree T are obtained. Thus, the stability of the tree work posture of the worker S itself can be ensured, and the pruning and cutting work of the tree T at each place can be performed accurately and safely.

  According to the invention which concerns on Claim 3, as the 1st-3rd expansion-contraction adjustment tool 3A, 3B, 3C, the end parts 11a and 12a side of the rope materials 11 and 12 are wound around the long rope 2, and the knots 33 and 34 are attached. If the formed one is used, some skill is required to form and operate the knots 33 and 34, but the production cost of the expansion / contraction adjusting tool 3 can be greatly reduced.

  According to the invention which concerns on Claim 4, it moves along the elongate rope 2 by performing predetermined operation as 1st-3rd expansion-contraction adjustment tool 3A, 3B, 3C, and the load of a predetermined direction is applied. If the lock fitting 35 configured to be prevented from moving on the long rope 2 is used, the operation becomes simple and easy, and no skill is required.

It is explanatory drawing which shows the state which is performing tree work by the tree work posture stability ensuring method of this invention. It is a perspective view which shows the principal part of the rope apparatus used for this invention. In a tree work posture stability ensuring method concerning the present invention, it is an explanatory view showing the state where a double rope system was hung on an upper anchor. (a) is explanatory drawing which shows the state which has climbed the tree using a double rope system, (b) is explanatory drawing of the state which is going to hang a lanyard system on a lower anchor in the climbed position. (a) is explanatory drawing of the state which has finished hanging a lanyard system on a lower anchor, (b) is explanatory drawing of the state which has isolate | separated the one end part of a double rope system from an operator's safety belt. It is explanatory drawing which shows the state which has hung the double rope system on the next upper anchor. . (a)-(d) is explanatory drawing which shows the method of forming an example of an expansion-contraction adjustment tool. (a)-(c) is explanatory drawing which shows the method of forming the other example of an expansion-contraction adjustment tool. (a)-(f) is explanatory drawing explaining how to tie a double 8-shaped knot. It is a perspective view which shows other embodiment of an expansion-contraction adjustment tool and a connector.

  A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic explanatory view of a state in which the tree work posture stability securing method according to the present invention shown below is being implemented. These are the perspective views which show the principal part of the rope apparatus used for this method. The rope device 1 used for the tree work posture stability securing method of the present invention is connected to the connected parts 6, 7, 8 of the safety belt 5 attached to the worker S at one end of one long rope 2. A first coupler 4A that is detachably coupled is attached via a double 8-shaped knot 32, and a first telescopic adjustment tool 3A is provided on the long rope 2 that is a required length away from the first coupler 4A. A second coupler 4B similar to the first coupler 4A is attached to the first telescopic adjustment tool 3A, and a long rope 2 portion from the first coupler 4A to the first telescopic adjustment tool 3A is a double rope system. The second expansion / contraction adjustment tool 3B and the third expansion / contraction adjustment tool 3C are provided at a required interval on the long rope 2 separated rearward from the first expansion / contraction adjustment tool 3A. The third coupler 4C and the fourth coupler similar to the first coupler 4A are added to the tools 3B and 3C. D is attached, and the lanyard system LYS for the lower anchor is formed by the long rope 2 portion from the second expansion / contraction adjustment tool 3B to the third coupler 4C, and the required height from the ground as shown in FIG. The double rope system DRS is hung on the upper anchor 9 made of, for example, the branch B of the tree T in this position, and the first and second couplers 4A and 4B are connected to the connected portion 6 of the safety belt 5, and this double rope is connected. As shown in FIG. 4 (a), the system DRS is used to climb up to the required height, and the lower anchor 10 consisting of, for example, a branch portion of a tree T trunk near the climbed position is hung on the lanyard system LYS, By connecting the coupler 4C and the fourth coupler 4D to the coupled portions 7 and 8 of the safety belt 5, the stability of the tree work posture can be ensured.

  The first expansion / contraction adjustment tool 3A freely adjusts the length of the double rope system DRS, and the second expansion / contraction adjustment tool 3B and the third expansion / contraction adjustment tool 3C freely adjust the length of the lanyard system LYS. Is. The first telescopic adjustment tool 3A provided at the end of the double rope system DRS in the rope device 1 shown in FIG. 2 comprises a knot 33 formed by winding one end of the short rope material 11 around the long rope 2. Specifically, as shown in FIGS. 7A to 7C, the one end 11a side of the short rope member 11 is wound around the main rope 2 a plurality of times and the one end 11a is wound a plurality of times. Break formed by letting the bottom of the long rope 2 perpendicular to the main body of the short rope member 11 from the side of the part, passing it through the part wound around multiple turns, and pulling it out from the central part It consists of a stitch 33 (knot), and can be slid along the long rope 2 by grasping the knot 33 by hand and pushing and pulling, and by applying tension in a predetermined direction, Shaku low It can be locked on the two.

  Further, in the rope device 1 shown in FIG. 2, each expansion / contraction adjustment tool of the second expansion / contraction adjustment tool 3 </ b> B and the third expansion / contraction adjustment tool 3 </ b> C provided on both ends of the lanyard system LYS includes a plunging knot 34 by the rope material 12. It can also be slid along the long rope 2 by grasping with a hand and pushing and pulling, and can be locked on the long rope 2 by applying a tension in a predetermined direction. As shown in FIGS. 8A to 8D, the plunging knot 34 is formed by bending the endless ring-shaped rope material 12 into an elongated shape and having one end-side bent portion 12 a orthogonal to the long rope 2. The other end side bent portion 12b of the rope material 12 is passed between the one end side bent portion 12a and the long rope 2 (see (a) and (b)), and the other end side bent portion 12b of the rope material 12 passed through is passed. The other end side bent portion 12b is passed through the one end side bent portion 12a as shown in (c) of FIG. A wound plunging knot 34 is formed.

  Further, as shown in FIG. 2, a short rope material in which a double 8-shaped knot 32 is formed at one end of the long rope 2 and a first expansion / contraction adjustment tool 3A (knot 33) is formed at one end. A double 8-shaped knot 32 is also formed at the other end of the cable 11. To form each double 8-shaped knot 32, a long rope as shown in FIG. 2 or the tip of the short rope material 11 is folded back to the required length, and from this state, the two folded back as shown in (b) are made into “8-shaped knots”, and (c) to (e As shown in (f), the two folded rope portions are connected so as to be kept in parallel, and the state shown in (f) can be obtained. The carabiner 13 serving as the first connector 4A or the second connector 4B is attached to the ring-shaped portion 32o of the double 8-shaped knot 32 formed in this way.

  In addition, in the rope apparatus 1 of embodiment shown in FIG. 2, the double 8-shaped knot 32 is formed in the one end part of the long rope 2, and the front-end | tip part of the short rope material 11, and the carabiner 13 is formed in the ring part 32o. However, it is also possible to form a loop-shaped eye portion at one end portion of the long rope 2 and the tip portion of the short rope material 11 and attach the carabiner 13 to the eye portion.

  As the couplers of the first coupler 4A to the fourth coupler 4D, the carabiner 13 used in the first coupler 4A and the second coupler 4B shown in FIG. 2 is most preferable. The opening-and-closing type hook 14 currently used for the 3rd coupler 4C and 4th coupler 4D which are shown may be sufficient. In this case, the attachment ring 14 a of the hook 14 is attached to the front end side hook portion 12 o of the rope member 12.

  As the work safety belt 5 worn by the worker S, a full harness safety belt, an easy harness safety belt, a sit harness safety belt, a thigh belt safety belt, a torso belt safety belt, or the like can be used. The safety belt 5 shown in FIG. 3 to FIG. 6 includes a torso belt 5a and a thigh belt 5b. The torso belt 5a is provided with a connected portion 6 at the center of the front portion in use, and both left and right The connected parts 7 and 8 are provided on the side, and the first connected part 4A and the second connected part 4B are connected to the connected part 6 at the front center, and the connected parts 7 and 8 on both sides are connected to the connected parts 6 and 8 on the both sides. The third connector 4C and the fourth connector 4D are connected to each other.

  A method for ensuring the stability of the tree work posture using the rope device 1 having the above-described configuration will be described below.

  First, as shown in FIG. 3, the operator S hangs the double rope system DRS of the long rope 2 on the upper anchor 9 made of, for example, a branch B of the tree T at a required height from the ground, The first connector 4 </ b> A and the second connector 4 </ b> B are connected to the connected portion 6 at the front center of the safety belt 5. At this time, the third coupler 4C of the second telescopic adjustment tool 3B and the fourth coupler 4D of the third telescopic adjustment tool 3C on the lanyard system LYS side are separated from the safety belt 5 as shown in FIG. And

  The long rope 2 has a considerably long total length of about 40 meters to 60 meters, and the other end side is stocked on the ground in a spirally wound state as shown in FIGS. When the double rope system DRS of the long rope 2 is hung on the upper anchor 9 such as the branch B, a slow line pouch (with a weight attached to the tip of the throwing string) is connected to the tip of the double rope system DRS. Then, this throw line pouch may be thrown on the upper anchor 9.

  Then, this double rope system DRS is used to climb to the required height as shown in FIG. At this time, the operator S can raise his / her body by pulling the portion of the long rope 2 below the first expansion / contraction adjustment tool 3A, and can slide the first expansion / contraction adjustment tool 3A upward. Grip the rope 2 so that the body does not fall down, and pull the long rope 2 part below the first telescopic adjustment tool 3A, and simultaneously lift the lower half of the body.

  When climbing to the required height as described above, as shown in FIGS. 4 (b) and 5 (a), the lower anchor made of, for example, a trunk branch of the tree T near the climbed position. 10 by hanging the lanyard system LYS part of the long rope 2 to 10 and connecting the third connector 4C and the fourth connector 4D to the connected parts 7 and 8 on the left and right sides of the safety belt 5 Ensure stable work posture. The state in which the third coupler 4C is connected to the connected portion 7 of the safety belt 5 is not visible in FIG. 5 (a) and is shown in FIG.

  FIG. 5 (a) shows that the first coupler 4A and the second coupler 4B on the double rope system DRS side are connected to the coupled portion 6 of the safety belt 5 of the worker S, respectively, and the first coupler on the lanyard system LYS side. 3 shows a state in which the third connector 4C and the fourth connector 4D are connected to the connected parts 7 and 8 of the safety belt 5, and in this state, the worker S stabilizes his work posture on the tree T. Therefore, pruning work and cutting work of the tree T can be performed accurately and safely.

  When the necessary work such as pruning is completed with the lanyard system LYS securing the stable work posture on the tree T as shown in FIG. 5 (a), and further pruning or the like is performed at an upper position. 5 (b), the first coupler 4A on the double rope system DRS side is disconnected from the connected portion 6 of the safety band 5 of the worker S and the double rope system DRS is loosened. After the double rope system DRS is hung on the upper anchor 9 consisting of the branch portion of the tree T trunk further upward as shown in FIG. 6, the first coupler 4A is connected to the connected part 6 of the safety belt 5. Then, the third coupler 4C and the fourth coupler 4D on the lanyard system LYS side are separated from the coupled parts 7 and 8 of the safety belt 5 so as to be in the state as shown in FIG. Use Climb to the required height in the manner described with reference to FIG. 4 (a), and hang the lanyard system LYS portion on the lower anchor 10 consisting of the branching portion or branch of the trunk of the tree T near the climbed position. By connecting the 4C and the second coupler 4B to the coupled portions 7 and 8 of the safety belt 5, the tree work posture is secured and the work is performed.

  Thereafter, if necessary, the above-described operation described with reference to FIGS. 3 to 6 is repeatedly performed, and the double rope system DRS of the long rope 2 is replaced with the upper anchor 9 that is gradually increased, It is possible to ensure the stability of the tree work posture of the worker S in various places from the low position to the high position of the tree T, and to perform the pruning and cutting work of the tree T in each place accurately and safely.

  As shown in FIGS. 7 and 8, the first expansion / contraction adjustment tool 3 </ b> A to 3 </ b> C of the rope device 1 used in the above-described method of securing the tree work posture is as shown in FIGS. 7 and 8. Is connected to the rope 2 to form a knot (breaks hitch 33 or plunging knot 34). In addition to such a knot, as shown in FIG. 10, a predetermined operation is performed. What consists of the lock | rock metal fitting 35 comprised so that the movement on the rope 2 might be prevented by moving along the rope 2 and applying the load of a predetermined direction can be used.

  FIG. 10 shows an embodiment in which the second connector 4B to the fourth connector 4D made of the carabiner 13 are detachably attached to the first extension / contraction adjuster 3A to the third extension adjuster 3C made of the lock fitting 35. . The lock fitting 35 is prevented from moving on the long rope 2 by the locking action of the lock member 15 that is operated by applying a load in a predetermined direction, and the lock by the lock member 15 is released by releasing the load. The lock member 15 is configured to be movable on the long rope 2 by pushing and pulling the metal fitting body 16 in the unlocked state, and the lock member 15 has a substantially U-shaped metal fitting body that holds the long rope 2. 16 is pivotally attached to a pivot 19, and has an eccentric cam portion 17 that can be brought into contact with and separated from the long rope 2 at one end portion, an attachment hole 18 at the other end portion, and is normally a spring (not shown). 2), the lock member 15 is urged to the unlocking position where the eccentric cam portion 17 is separated from the long rope 2 and the metal fitting body 16 is slidable along the long rope 2, and the second connector 4 By pulling the carabiner 13 that is the fourth coupler 4D in a predetermined direction (for example, diagonally upward to the right in FIG. 10) against the spring, the lock member 15 is rotated about the pivot 19 to be eccentric. The cam portion 17 is in pressure contact with the long rope 2, and the metal fitting body 16 is locked onto the long rope 2 by the pressure frictional force.

  A carabiner 13 shown in FIG. 10 is pivotally attached to a substantially C-shaped main body 13a and a lower end of the main body 13a via a pivot 13b so as to close the opening of the C-shaped main body 13a. Part 13c, and a safety ring 13d screwed over the free end part of the rotation part 13c and the upper end part side of the main body part 13a. In use, the safety ring 13d is turned to rotate the main body part 13a. After pulling in from the upper end side to the rotating portion 13c side, the rotating portion 13c is rotated around the pivot 13b to open the opening of the C-shaped main body portion 13a, whereby the lock member 15 of the lock fitting 35 is opened. It will be in the state which can be attached by inserting in the attachment hole 18 provided in this.

  As can be seen from the description of the above embodiment, in the tree work posture stability securing method of the present invention, a double rope system DRS is formed on one end of one long rope 2, and the rear side of the double rope system DRS is formed. The rope device 1 in which the lanyard system LYS is formed is used, and the double rope system DRS is hung on the upper anchor 9 consisting of the branch portion or the branch B of the tree T trunk at the required height, and the first and second couplers. In a state where 4A and 4B are connected to the safety belt 5, the double rope system DRS is used to climb up to the required height, and the lower anchor 10 consisting of the branching portion or branch B of the tree T trunk near the climbed position. By applying the lanyard system LYS and connecting the third and fourth couplers 4C and 4D to the safety belt 5, the stability of the tree work posture can be secured. Because the lanyard system LYS is integrally formed on the same rope 2 as the double rope system DRS, there is no need to replace the ready-made lanyard by work as in the conventional double rope system, and the work is efficient. Can be done.

T tree B tree branch S worker 1 rope device 2 long rope 3A first expansion / contraction adjustment tool 3B second expansion / contraction adjustment tool 3C third expansion / contraction adjustment tool 4A first connector 4B second connector 4C third connector 4D Fourth coupler DRS Double rope system LYS Lanyard system 5 Safety belt 9 Upper anchor 10 Lower anchor

Claims (4)

  At one end of one long rope, a first coupler that is detachably coupled to the worker's safety belt is attached, and the first telescopic adjustment tool is placed on the long rope that is a required length away from the first coupler. And attach a second coupler similar to the first coupler to the first telescopic adjustment tool, and make the long rope part from the first coupler to the first telescopic adjustment tool a double rope system, A second telescopic adjustment tool and a third telescopic adjustment tool are provided on a long rope separated rearward from the adjuster at a required interval, and the second and third telescopic adjustment tools are provided with the same first connector as the first coupler. This is a method for securing tree work posture stability using a rope device in which a lanyard system is formed by a long rope portion from the second expansion / contraction adjustment tool to the third expansion / contraction adjustment tool by attaching 3 and the fourth coupler. A branch of a tree trunk at the required height from the ground or With the double rope system hung on the upper anchor made of and with the first and second couplers connected to the safety belt, use this double rope system to climb to the required height, and the tree trunk near this climbed position A method of ensuring the stability of the tree work posture by securing the stability of the tree work posture by applying a lanyard system to the lower anchor comprising the branch parts or branches and connecting the third and fourth connectors to the safety belt. A double rope system is hung on an upper anchor consisting of a branch part or a branch of a tree trunk at a required height from the ground, and this double rope system is used with the first and second couplers connected to a safety belt. Stabilize the tree work posture by climbing to the height and hanging the lanyard system on the lower anchor consisting of the branches or branches of the tree trunk near this climbed position and connecting the third and fourth couplers to the safety belt Pruning and cutting the tree in a secured state, then disconnecting the first coupler from the safety belt and hanging the double rope system on the required upper anchor above the upper anchor to secure the first coupler After connecting to the belt, with the third and fourth couplers disconnected from the safety belt, use the double rope system to climb to the required height and close to the climbed position. That over the lanyard system to the lower anchor consisting of branched portion or branch of a Miki Kiki, according to claim 1, so as to ensure the stability of the dendritic working posture by linking the third and fourth coupling the safety belt To ensure the stability of tree work.
  The tree work posture stability securing method according to claim 1 or 2, wherein the first to third expansion / contraction adjustment tools are formed by wrapping one end of a short rope material around a long rope to form a knot.   The first to third expansion / contraction adjustment tools are configured to move along the long rope by performing a predetermined operation, and to be prevented from moving on the long rope by applying a load in a predetermined direction. The tree work posture stability securing method according to claim 1 or 2, comprising a lock fitting.

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