JP2019062863A - Drawing rope installing tool - Google Patents

Abstract

To provide a drawing rope installing tool which prevents an operation rod from bending by reducing weight and keeping balance of the operation rod when displacing it in a vertical direction, and suppressing the tool from being hooked to a branch of a tree when displacing it in the vertical direction.SOLUTION: A drawing rope installing tool 1 comprises: a base 2; a columnar part 3; an arm member 7 and a thread-like member 12. Torque from a state that a tip is upward to a state that the tip is toward the base 2 side is applied to a tip side arm component 72 by pulling the thread-like member 12 to the base 2 side, and relaxation of a thread-like member 4 for support connected to the columnar part 3 regulates rotation of the tip side arm component 72. While the tip side arm component 72 rotates to a regulated position, and the thread-like member 12 is pulled out from a tip member of the tip side arm component 72, a connection member 9 of the tip side arm component 72 is connected to a connection member 13 of the thread-like member 12 so that an enclosure part is formed by the thread-like member 12 and the arm member 7 to hook it over a trunk of an object tree for trimming.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a device for attaching a pull rope to a tree to be harvested and cutting the tree with the pull rope to help adjust the direction in which the tree falls when cutting down the tree to be harvested.

  In order to maintain and maintain the transmission line, trees located close to the transmission line, such as below the transmission line, may be cut down. However, depending on the direction in which the trees are cut down, workers may be unexpectedly harmed. . Therefore, for example, as shown in FIG. 12 and the like of Patent Document 1, when cutting down a tree to be harvested, a pull rope is attached to the tree to be harvested and the tree is pulled by a pull rope to adjust the direction in which the tree falls To help.

  And, as a pull rope attaching device for attaching a pull rope to the upper side of a tree, for example, as shown in Patent Documents 1 and 2 and Patent Document 3, a handle portion is capable of remote control from the lower side of the tree. An apparatus for attaching a pull rope has been developed which uses a large operating rod of axial dimension from the tip to the tip.

  The pull rope attaching device shown in Patent Document 1 has two curved movable arm members whose tips can be mutually approached, and the inner periphery of the movable arm members when the tips of the two movable arm members are closed. It is possible to surround the whole circumference of the trunk of a tree by a plane. A pull rope is temporarily fixed to these movable arm members, and when the front ends of the movable arm members are closed, the tips of the pull ropes are connected to each other, and then the pull rope is annular by applying a predetermined force. The movable arm member is disengaged in the state of. Thus, after the trunk of the tree is surrounded by the two movable arm members, by performing an operation of applying a predetermined force or the like, the toroidal pull rope is attached to surround the trunk of the tree.

  In the pull rope attaching device shown in Patent Document 2, arc-shaped movable arm members are respectively attached to both end sides of an arc-shaped main body. When the tips of these movable arm members are closed, it is possible to surround the entire circumference of the trunk of the tree with the inner peripheral surfaces of both movable arm members. A pulling rope is temporarily fixed to the movable arm member, and the connecting tool at each end of the movable arm member is attached with the pulling rope. After the distal end of the movable arm member is closed and the connectors are connected, the annular pulling rope is formed by removing the connector from the movable arm member. As a result, after the trunk of the tree is surrounded by the two movable arm members, by removing the connector from the movable arm member, the toroidal pulling rope is attached to surround the trunk of the tree.

  The pull rope attaching device shown in Patent Document 3 has, for example, a U-shaped pull rope guide provided on the upper end side of the operating rod, a hook provided on the upper end side of the operating rod, and a tip fitting at the tip. It has a rope provided and is lightweight with a simple structure. Then, as a pull rope attachment method using this pull rope attachment device, in Patent Document 3, after the tip end side of the rope is attached to the rope guide in an immobile state, the operation rod is lifted and the rope guide is a tree trunk Next, remove the rope guide from the rope, hook the hook to the end fitting of the rope, pull the rope down to the operator's hand, connect the wire rope to one end of the rope, and It is shown pulling the other end of the hook and hooking the wire rope to the tree to make a loop and lock.

Japanese Patent Application Laid-Open No. 9-28214 JP, 2009-30, A JP, 2006-238807, A

  However, the pulling rope attaching device of the type in which the entire circumference of the tree is surrounded by the arm members as shown in Patent Document 1 and Patent Document 2 is heavy because the structure is complicated, and furthermore, it is relatively heavy pulling. Since the rope is attached to the pulling rope attachment from the first time the pulling rope attachment is lifted above the tree, if the axial dimension of the operating rod is long, the operating rod may be bent.

  In this respect, as described above, the device for attaching a pull rope shown in Patent Document 3 is lightened in weight by simplifying the structure, and further, the rope attached to the rope guide is also a pull for pulling a tree. It is possible to adopt a relatively lightweight rope because it is for pulling a wire rope, not a wire rope that is a rope.

  However, the rope guide to which the rope of the pull rope attachment device shown in Patent Document 3 is attached is in the form of an arc, for example, U-shaped, in order to face the side circumferential surface of the tree to be harvested. It has always been. For this reason, when raising the pulling rope attachment apparatus shown by patent document 3 to the upper direction of a tree, it has the disadvantage that the rope guide which spread in the cross direction tends to be caught on the branch etc. of a tree. In addition, since the pull rope attachment device of Patent Documents 1 and 2 also has two arc-shaped arm members, when the pull rope attachment device is lifted above the tree, the arm member expanded in the lateral direction is a branch of the tree It has the disadvantage of being easy to catch on.

  In addition, since the pull rope attachment device disclosed in Patent Document 3 normally has an arc-shaped rope guide that spreads in the lateral direction as described above, when attached to the tip of the operation rod with a long axial dimension and lifted up There is a possibility that the operating rod may bend even though it is lightweight because the center of gravity is not taken.

  Therefore, the present invention achieves weight reduction and prevents bending of the operating rod mounted with the center of gravity taken off when displaced vertically, and does not catch an obstacle such as a branch of a tree when displaced vertically. It is a main object of the invention to provide a pull rope attachment device that can be

  In order to achieve the above-mentioned subject, the pulling rope installation instrument concerning the present invention is located in the side opposite to the side connected with the control rod of the base which connects with the control rod, and the base side arm component member , And after rotating the tip toward the base side from the state of the tip facing the opposite side to the base via the coupling mechanism to the base side arm component member, it rotates so as to return to the opposite side to the base And an arm member having a distal arm component member having a first connection member at the tip end, and being pulled on the arm member along the outside in the longitudinal direction of the arm member And a thread-like member having a second connection member at its tip, which is pulled out from the tip-end portion and can be connected to the first connection member after passing from the base-side portion to the tip-end portion; Displaced to Thus, the distal end arm component is provided with a rotational force for rotating the distal end of the distal arm component toward the base, and the distal arm component stops at a desired position. The rotation restricting means restricts the rotation of the distal end side arm constituent member, and the distal end side arm constituent member is rotated to the position regulated by the rotation restricting means, and the threadlike member is the distal end side arm constituent member. The second connecting member of the thread-like member is connected to the first connecting member at the tip of the arm member in a state of being pulled out from the tip end portion, whereby an encircling portion is formed by the thread-like member and the arm member It is characterized in that (claim 1). The base is directly or indirectly connected to the operating rod. The thread-like member is thinner and lighter than the pull rope. The first connection member and the second connection member are, for example, permanent magnets, but instead of the permanent magnets, for example, the first connection member is a hooking member, and the second connection member is a hooked member Then, the hooking member may be hooked on the hooked member. The position at which the distal end side arm component of the arm member is restricted by the rotation restricting means and stopped is, for example, a right angle or an angle close to the right angle between the distal side arm component and the base side arm component Position is mentioned.

  Thus, the pull rope attaching device according to the present invention is disposed at the tip of the operating rod held by the operator, and the tip arm component of the arm member is first positioned on the opposite side to the base, ie, upward. Lift up the tree to be harvested and reach the desired height, pull the threadlike member proximally to rotate the distal arm component proximally and the tip is in the desired position, eg proximal The arm member is laterally extended at an angle perpendicular or nearly perpendicular to the arm component. Next, the distal end side arm component in a state of being laterally extended is positioned so as to straddle the top of the branch of the tree to be harvested by the distal end site, and the filamentous member drawn out from the distal end site of the distal end side arm component Is suspended downward from the branch. Furthermore, after moving the pulling rope attachment device by rotating the tip portion of the tip end arm component approximately one round along the circumference of the tree trunk to be cut while pulling out the thread member, the tip arm component The first connecting member at the tip of the second connecting member is connected to the second connecting member at the tip of the threadlike member. As a result, the thread-like member and the arm member form a hooked surrounding portion that surrounds the trunk of the tree to be harvested. Furthermore, while pulling out the thread-like member, the pull rope attaching device is pulled down, and the portion where the first connection member and the second connection member are connected is lowered to a desired place, for example, the ground. At this time, since the tension toward the base of the pull rope attachment tool to the thread-like member is released and the thread-like member is in a state of being caught by the trunk of the tree to be harvested at the surrounding portion, the distal arm configuration of the arm member As the member is pulled upward, the distal arm component rotates in the upward direction. Then, the second connecting member is removed from the first connecting member, a pull rope is attached to the tip of the thread-like member, and the thread-like member is pulled in the lifting rope lifting direction. However, the pulling rope can be pulled in a substantially U shape around the trunk of the tree to be harvested.

  In the pull rope attaching device according to the present invention, the hooking of the threadlike member to the arm member is performed by passing through the base side arm component and a guide portion provided on the tip side arm component. At the same time, the thread-like member is stretched between the guide portion closest to the connection mechanism of the base-side arm component member and the guide portion closest to the connection mechanism of the distal-end arm component member, It is characterized in that a rotational force directed to the base side is applied to the distal end side arm component (claim 2). The guide portion has, for example, a ring formed with an insertion hole through which the thread-like member is inserted. Thus, the application of the rotational force toward the base side to the distal end side arm component of the arm member pulls the threadlike member toward the base side of the arm member, and the guide portion of the base side arm component closest to the connection mechanism It is possible to carry out only by the operation in which the thread-like member is stretched between the end and the guide portion closest to the connection mechanism of the distal end side arm component.

  In the pull rope attaching device according to the present invention, a visual recognition member for visualizing the second connection member is disposed at a portion drawn from the distal end portion of the distal end side arm component of the linear member. It is characterized in that (claim 3). Thus, the worker can connect the second connection member at the tip of the thread-like member hanging down from the branch of the tree to be harvested to the first connection member at the tip of the tip-side arm component of the arm member. Since the visual recognition member serves as a mark indicating the position of the second connection member when performing remote control from below the tree, such as on the ground, the work efficiency can be improved.

  The pull rope attaching device according to the present invention further includes a rod-like columnar portion connected to the base on the side opposite to the side connected to the operation rod of the base, and the columnar portion has the base side arm configuration A support for fixing the members in parallel and for controlling rotation of the tip arm by connecting one end with the tip arm and relaxing as a rotation restricting means of the tip arm. The other end of the thread-like member is connected, and the third connecting member of the distal end arm component and the fourth of the columnar portion are in parallel with the columnar portion and the distal arm component. The connection member is connectable, and the second connection member of the thread-like member is in the connection state in a state of being drawn out from the tip end portion of the distal end side arm component member by a desired length. The arm member It is characterized that it is connectable to the third connecting member or the fourth connecting member of the columnar portion (claim 4). The third connection member and the fourth connection member are, for example, permanent magnets, and are embedded in the distal end side arm component member or the columnar portion, or disposed on the outer peripheral surface.

  Thus, when the distal end side arm component of the arm member is in a state parallel to the columnar portion, that is, in the state of facing upward, the distal end side arm component of the arm member and the columnar portion form the third connection member and the third connecting member In the state of being connected by the connection member 4, the second connection member at the tip of the thread member is also connected to the third connection member or the fourth connection member, and the tip of the thread member is also fixed. When the pulling rope attachment tool is lifted above the tree to be harvested, it is prevented from being caught on the branch or the like of the tree to be harvested. The connection of the second connection member, the third connection member, and the fourth connection member can be released by an operation of pulling the filamentous member toward the base side.

  As described above, according to the pull rope attaching device according to the present invention, when the pull rope attaching device is mounted by being attached to the tip of the operation rod, the tip side arm component member of the arm member is the base or the columnar portion It can be in the state of facing upward along. Also, even when the thread-like member is pulled down to the tree, the tip-side arm component of the arm member is again moved upward by being pulled upward by the thread-like member caught on the tree even when the pulling rope attachment device is lowered. It can be in the state of facing. This makes it possible to prevent the arm member from being inadvertently caught on a tree branch or the like when lifting or lowering the pull rope attachment device.

  Also, when lifting the pull rope attachment device, the pull rope attachment device is not attached to the pull rope attachment, and a thread-like member lighter than the pull rope is attached. It is possible to reduce the weight. And when raising or lowering a pull rope attachment instrument, the tip end side arm component member of an arm member can be collected to a parallel state to a pillar part. For this reason, even if the axial dimension of the operating rod is long, the center of gravity is separated, so that the operating rod with the device for attaching the pulling rope attached to the tip is bent when lifting the device for attaching the pulling rope or lowering it. It is possible to prevent the work and to improve the work efficiency.

It is the schematic which showed the structure of the instrument for pull rope attachment of this invention, and demonstrated the state which the arm member connected with the columnar member. It is the schematic which showed the structure of the instrument for pull rope attachment of this invention, and demonstrated the state by which the connection with the arm member and the columnar member was cancelled | released. It is the schematic which showed the upper side part of the instrument for pull rope attachment of this invention, and demonstrated the state which the arm member rotated so that it might protrude laterally. (A) is a perspective view of the upper part of the pulling rope attachment which shows the state which the arm member rotated so that it may project sidewise, (b) is a base side arm structure member and tip side arm structure of an arm member It is the enlarged view which showed the connection mechanism which connects a member. (A) to (c) show the working steps of pulling the thread-like member to a position above the branch of the tree to be harvested using the pulling rope attachment device of the present invention and pulling down the tip of the thread-like member to the ground side FIG. (A) to (c) are process drawings showing the work process of attaching the pull rope to the fitting of the thread-like member pulled down to the ground side. It is an enlarged view of the structure which the contact member of the front-end | tip of a thread-like member has a hit plate as a modification of the pulling rope attachment instrument of this invention. In (a) to (c), the magnet laminate of the connection member at the tip of the arm member is applied to the contact plate of the connection member at the tip of the filamentous member, and the magnet laminate of the connection member of the thread member and the tip of the arm member It is process drawing which showed the operation process which connects the magnet laminated body of a connection member.

  Hereinafter, embodiments of the present invention will be described based on the drawings.

  1 to 6 show an example of a pull rope attaching device 1 according to the present invention. For example, when cutting down a tree to be harvested, the pull rope attaching device 1 attaches the pull rope R to the trunk of the tree to be harvested and pulls the tree with the rope R to assist the adjustment of the falling direction of the tree , And is used by being attached to the tip of the operating rod P (the tip side portion is shown in FIG. 4 and FIG. 5). A portion of the pull rope R is shown in FIGS. 6 (b) and 6 (c).

  In this embodiment, as shown in FIGS. 1 and 2, the pull rope attaching device 1 ends on the opposite side of the base 2 connected to the operating rod P and the side connected to the operating rod P of the base 2. On the side opposite to the side of the base 2 connected to the operation rod P (on the same side as the column 3). The arm member 7 disposed and the thread member 12 attached to the arm member 7 are provided.

  The base portion 2 and the columnar portion 3 are in the form of straight bars and are connected on the same axis. The columnar portion 3 is a base for fixing the base side arm component 71 of the arm member 7, and restricts rotation of the distal end side arm component 72 of the arm member 7, and has a support thread for supporting a state after rotation. One end of the member 4 is attached and is connected to the distal end side arm component member 72 to be a post for holding the distal end side arm component member 72 facing upward. The columnar portion 3 has a connecting member 31 formed of a permanent magnet in the form of being embedded in this embodiment on the tip side of the columnar portion 3. In this embodiment, one end of the support thread member 4 is connected to the tip end side arm component 72 side of the side surface of the columnar portion 3 on the base 2 side with respect to the connection member 31. The tip of one end of the support thread 4 is fixed on the opposite side to the tip arm component 72 through the columnar section 3 in this embodiment.

  However, the distal end side arm component member 72 of the arm member 7 can be directed upward (independently) by the following connection mechanism 8 even if there is no particular support, and the connection mechanism 8 is the distal end side arm When the rotation restricting means for stopping the rotation of the component member 72 at a desired position is provided, although not shown, the pull rope attaching device 1 has the columnar portion 3, the support thread member 4 described above, The connection member 31 may not be provided.

  In this embodiment, the arm member 7 is a straight rod-like base side arm component 71 fixed to the side surface of the columnar section 3 and a tip of the base side arm component 71 via a connecting mechanism 8 such as a hinge. And a straight rod-like distal end arm component 72 connected thereto.

  The axial dimension of the base side arm component 71 is shorter than the axial dimension of the columnar portion 3, and the end of the distal side arm component 72 of the base side arm component 71 reaches the tip of the columnar portion 3. In this embodiment, it is located at about the middle portion in the axial direction of the columnar portion 3 or closer to the base 2 than the middle portion. The connection member 9 is fixed to the tip side opposite to the base side arm component 71. The connection member 9 is a tip of a plurality of plate-like magnets in this embodiment. It is comprised by the magnet laminated body 91 laminated | stacked on the axial direction of the side arm structural member 72. As shown in FIG. Further, as shown in FIGS. 1 to 3, the distal end side arm component member 72 has a columnar end from the state parallel to the columnar portion 3 (the direction in which the distal end points upward) with the connection mechanism 8 as the rotation center. It is rotatable along the axial direction of the portion 3 so as to be able to rotate in a direction away from the columnar portion 3 and return to a state parallel to the columnar portion 3.

  The distal end side arm component member 72 has the connection member 31 of the columnar portion 3 and the distal end side arm component members in a state where the distal end faces upward (the distal end side arm component member 72 is in parallel with the columnar portion 3) A connecting member 721 made of a permanent magnet connectable to the connecting member 31 is disposed at a position where the columnar members 3 are aligned in the radial direction 72. The connecting member 721 is also provided in a form embedded in the distal end side arm component 72 in this embodiment. The other end of the support thread member 4 is connected to the side of the column 3 on the side of the distal end side arm component 72 on the side of the base 2 with respect to the connection member 721. In this embodiment, the tip end of the other end portion of the support thread member 4 penetrates the tip end side arm component member 72 and is fixed on the opposite side to the columnar portion 3. The connection position of the thread-like support member 4 to the distal end-side arm component 72 is such that the angle between the columnar section 3 and the distal-side arm component 72 is at or near a right angle with the support thread member 4 stretched. State where it becomes an angle, that is, a state in which the tip end side arm component 72 projects from the upper side of the base side arm component 71 toward the lateral outside of the pull rope attaching device 1 from the columnar part 3 State) is set. However, as long as the function of the pull rope attachment device 1 according to the present invention is not impaired, it is acceptable that the tip end of the distal end side arm component 72 faces obliquely upward or obliquely downward. As described above, the connection of the other end of the support thread member 4 to the distal end side arm component 72 and the embedding of the connection member 721 may be unnecessary depending on the connection mechanism 8. In this case, the base-side arm component 71 of the arm member 7 may be arranged coaxially with the base 2 instead of the columnar section 3.

  The connecting mechanism 8 in this embodiment is, as an example of a hinge, an annular portion 81 connected to the base arm component 71 and an annular portion 82 connected to the distal arm component 72 in FIG. 4B. And a shaft 83 inserted through the annular portions 81, 82. Although not illustrated, the connection mechanism 8 is provided with a rotation control means such as a stopper or a gear mechanism so that the distal end side arm component member 72 is erected above the base side arm component member 71, or the distal end side arm component member 72. It may be possible to maintain a state in which it projects in a direction perpendicular to the base side arm component 71.

  The pull rope attaching device 1 is a bending means for bending the distal end side arm component member 72 of the arm member 7, which is thinner and lighter than the pull rope R, and plural (three in this embodiment) And a guide portion 19.

  The guide portion 19 mainly includes a ring provided with an insertion hole through which the thread member 12 is inserted, and at least one in the base side arm component 71 of the arm member 7 and two in the distal end arm component 72 There is. Each guide portion 19 is disposed on the side opposite to the columnar portion 3, that is, on the inner circumferential side of the arm member 7 when the distal end side arm component 72 is bent by the connecting mechanism 8. Furthermore, in this embodiment, the distance from the connecting mechanism 8 of the guide portion 19 provided on the base side arm component 71 is the most connecting mechanism 8 among the two guide portions 19 provided on the distal end side arm component 72. It is set shorter than the distance from the guide part 19 near to the connection mechanism 8. The other of the two guide portions 19 provided on the distal end side arm component member 72 is located at the distal end portion of the distal end side arm component member 72 and closer to the connection mechanism 8 than the connecting member 9.

  The filamentous member 12 is composed of a permanent magnet connectable to the connecting member 9 at the tip of the distal end side arm component member 72 of the arm member 7 at the tip and a connecting member 721 disposed in the middle of the distal end side arm component member 72. A connecting member 13 is provided. In this embodiment, the connecting member 13 has a columnar base 131 and a magnet laminate 132 in which a plurality of plate-like magnets disposed on both sides in the axial direction of the base 131 are laminated in the axial direction of the base 131. , 132 and the like. The magnets of the magnet laminations 132 and 132 on the outer side in the lamination direction are also adjusted in magnetic poles so that they can be connected to the magnets on the outer side in the lamination direction of the connection member 9 and the opposite side of the connection member 31 of the connection member 721. The tip of the threadlike member 12 is connected to, for example, a central portion in the axial direction of the base 131 of the connection member 13. The magnet stacks 132 and 132 may be connectable to the opposite side of the connection member 31 with the connection member 721 as long as they can be connected to the magnets of the connection member 9 in the stacking direction.

  Then, after passing through the rings of all the guide portions 19 provided on the arm member 7, the filamentous member 12 having the connecting member 13 attached to the tip end finally reaches the pull-out and winding member 20, It is in a state of being wound around the pull-out / roll-up member 20 with a desired length.

  Thus, in the state of the pull rope attaching device 1 shown in FIG. 1, for example, the connecting member 13 or a member positioned closer to the pull-out / roll-up member 20 than the connecting member 13 by pulling the thread member 12. (The visual recognition member 14, the pull rope attachment 15, the stopper 16) abut the guide portion 19 on the distal end side of the distal end side arm component member 72 or the guide portion on the distal end side of the distal end side arm component member 72 of the thread member 12 The force directed downward by the force of gravity of the connection member 13 and the visual recognition member 14 acts on the portion drawn out to the distal end side from 19 and the guide portion on the distal end side of the distal end side arm component 72 of the thread member 12 19 and the guide 19 of the base arm component 71 and the guide 19 of the distal end arm component 72 closest to the connection mechanism 8 Among filamentous member 12 becomes taut, the rotational force is applied toward the base 2 side to the tip side arm component 72. Finally, as shown in FIG. 3 and FIG. 4A, the thread-like member 12 is in a stretched state in which the guide portions 19 are diagonally connected. On the other hand, since the distal end side arm component 72 is connected by the columnar portion 3 and the support thread member 4, the angle of the distal side arm component 72 with respect to the base side arm component 71 is a right angle or an angle close to a right angle. When it becomes, the support threading member 4 is in a stretched state, and the further rotation of the distal end side arm component member 72 is restricted.

  Furthermore, in this embodiment, the member 14 for visual recognition, the pull rope attachment 15 for attaching the pull rope R, and the stopper 16 in the part on the side closer to the pull-out / roll-up member 20 than the connection member 13 in this embodiment. It is provided.

  The visual recognition member 14 works when connecting the connection member 9 provided at the tip of the distal end side arm component 72 of the arm member 7 to the connection member 13 at the tip of the threadlike member 12 suspended from the branch of the tree to be harvested It is for making it easy to visually recognize the location of the connection member 13 even if the member looks up from the bottom of the tree. The visual recognition member 14 is a spherical body having a red color in this embodiment, and the thread member 12 passes through the center of the visual recognition member 14 from the pull-out / roll-up member 20 side to the connection member 13 side. doing. The thread member 12 is provided with a stopper by connecting the thread member 12 on the connection member 13 side, and the upper visual recognition member 14 is attached to the lower connection member 13 even if both are positioned vertically. It does not hit and the desired interval is open.

  The stopper 16 is for restricting the dimension of the threadlike member 12 suspended from the guide portion 19 at the tip end portion of the tip end side arm component member 72 from becoming unnecessarily long, and in this embodiment, the threading member 12 It is in the form of an attached sphere, the diameter of which is greater than the inner diameter of the ring of the guide 19. As a result, when the distal end side arm component 72 rotates from the upward facing state to the sideward overhanging state, the visual recognition member 14 jumps up because the visual recognition member 14 is relatively large and heavy. Thus, the thread member 12 also jumps up interlockingly, and it is possible to prevent the connection member 13 of the thread member 12 from being inadvertently connected to the connection member 9 of the distal end side arm component member 72. When the size and weight of the visual recognition member 14 are set to such a size and weight that no jump-up occurs when the distal end side arm component 72 is turned to the side, the stopper 16 is selected. It is possible to eliminate it.

  In this embodiment, the pull rope attachment 15 is constituted by two rings 151 and a connecting portion 152 connecting the rings 151 and 151, as shown in FIG. The thread member 12 is attached to the thread member 12 by inserting the thread member 12 through both of the two rings 151 and 151 at the portion between them.

  Then, when attaching the pull rope S to the thread member 12, first, the portion of the thread member 12 between the rings 151, 151 of the pull rope attachment 15 is as shown by the arrow in FIG. By pulling so as to form a substantially U-shaped deflection, a space surrounded by the pull rope attachment 15 and the thread member 12 is formed and enlarged. Next, as shown in FIG. 6 (b), the pull rope S is inserted into the space surrounded by the pull rope attachment 15 and the thread member 12. Furthermore, the portion of the threadlike member 12 outside the rings 151, 151 of the pull rope attachment 15 is pulled outward as shown by the arrow in FIG. The space surrounded by the thread-like member 12 is reduced. As a result, since the pull rope R is restrained by the pull rope attachment 15 and the thread member 12, the pull rope R is attached to the thread member 12.

  By using the pull rope attaching device 1 configured as described above, the pull rope R can be hooked to the trunk of a tree to be harvested in the following steps.

  First, as shown in FIG. 1, after connecting the base 2 directly or indirectly to the operating rod P, the distal end side arm component member 72 of the arm member 7 is directed upward and parallel to the columnar portion 3 Then, the columnar member 3 and the distal end side arm component member 72 are connected by the connecting members 31 and 721, and further the filamentous member 12 is pulled out, and the connecting member 13 of the filamentous member is connected to the connecting member of the distal end side arm component member 72 Connect to 72. As a result, the state in which the distal end side arm component 72 and the columnar portion 3 are gathered is temporarily fixed, and the distal end portion of the thread member 12 is also temporarily fixed to the distal side arm component 72.

  Next, after holding the operation rod P and lifting the pull rope attaching device 1 in this state to a desired height with respect to the trunk of the tree to be harvested, the threadlike member 12 is wound, etc. Is pulled to the base 2 side (ground side) of the rope attachment device 1. Thereby, first, as shown in FIG. 2, the threadlike member 12 is displaced upward, and the connection between the connection member 13 of the threadlike member 12 and the connection member 721 of the distal end side arm component 72 is released. Next, a rotational force to the base 2 side is given to the distal end side arm component member 72 and at the same time its rotation is restricted by the tensioning support member 4 being stretched, as shown in FIGS. 3 and 4. As shown, the connection between the connection member 721 of the distal end side arm component member 72 and the connection member 31 of the columnar portion 3 is also released, and the distal end side arm component member 72 extends laterally from the columnar portion 3 It will be in the state. That is, the distal end side arm component 72 is bent at a right angle or nearly right angle with respect to the base side arm component 71. At this time, the dimension of the threadlike member 12 depending from the guide portion 19 of the distal end side arm component 72 is restricted by the stopper 16, so that even if the distal side arm component 72 is rotated, the visual recognition member 14 and thus the connecting member 13 is prevented from jumping up and connecting with the connecting member 9 at this stage.

  And as this process, as FIG. 5 (a) shows, the front end side arm structural member 72 of the state which protruded sidewise from such a columnar part 3, The front-end | tip site | part is the branch of the tree for felling. In a position straddling the upper side, at such a position, the tip of the thread-like member 12 pulled out from the tip end of the tip side arm component 72, that is, the connecting member 13 hangs downward below the branch of the tree to be harvested It will be in the state.

  Next, as shown in FIG. 5 (b), while pulling out the threadlike member 12, along the circumference of the trunk of the tree to be harvested, the tip end portion of the distal end side arm component 72 is shown in FIG. The first connecting member at the tip of the distal arm component 71 after the pull rope attaching device 1 has been moved in a turn about one turn so as to return to the near side of the tree trunk after being displaced to the other side. 9 is connected to the connection member 13 at the tip of the thread member 12. At this time, the visual recognition member 14 functions as a mark for visualizing the position of the connection member 13. Then, by connecting the connecting member 9 to the connecting member 13, an encircling portion for hooking a tree is formed by the thread member 12 and the arm member 7 so as to surround the trunk of the tree to be harvested.

  Furthermore, as shown in FIG. 5C, the pulling rope attachment device 1 is pulled down while pulling out the threadlike member, and the portion where the connecting member 13 and the connecting member 9 are connected is lowered to a desired place, for example, the ground. At this time, the pulling toward the base 2 of the pull rope attaching device 1 to the thread-like member 12 is released, and the thread-like member 12 is in a state of being caught by the trunk of the tree to be harvested at the surrounding portion. Since the component 72 is pulled upward by the thread member 12 and is not shown in FIG. 5C, the distal arm component 72 is rotated in the upward direction with the connecting mechanism 8 as the center of rotation. can do.

  Finally, the connection member 13 is removed from the connection member 9 and the pull rope R is attached to the pull rope attachment 15 at the tip end portion of the thread member 12 in the process shown in FIG. Pull the rope R in the lifting direction. However, the pull rope R can be pulled in a substantially U-shape around the trunk of the tree to be harvested.

  The connection member 13 attached to the tip of the thread-like member 12 is not limited to the configuration shown in FIGS. 1 and 2, but is an example, and another connection member 13 as shown in FIGS. 7 and 8 may be used. good. Hereafter, the connection member 13 of this other example is demonstrated using FIG.7 and FIG.8. However, the same reference numerals are given to the same configuration as that described in the previous embodiment, and the description thereof will be omitted or simplified.

  The connection member 13 is configured by a backing plate 133 attached to the thread-like member 12 and a magnet laminate 132. The backing plate 133 is, for example, a thin rhombus plate-like member, and is formed of a metal such as iron to which a magnet is adsorbed. In this embodiment, the thread member 12 is fastened to the through hole provided on the top side of the backing plate 133, and the magnet laminate 132 is integrally provided on the bottom side of the backing plate 133. With such a configuration of the connection member 13, as shown in FIGS. 8A and 8B, the axial direction of the magnet stack 91 of the connection member 9 of the distal end side arm component 72 (the magnet The end face of the magnet stack 91 in the axial direction is absorbed by the end plate 133 and is slipped to the lower side of the end plate 133 by gravity while being attracted to the end plate 133, and the final end face Is attracted to the end face of the magnet stack 132 in the axial direction (magnet stack direction). Thereby, when connecting the connecting member 9 to the connecting member 13, it is sufficient to apply the contact plate 133 having a relatively larger area than the magnet laminate 132, so that the connecting operation of the connecting member 9 and the connecting member 13 is simplified. Can be realized.

  Lastly, the connecting member 9 and the connecting member 13 have been described as using permanent magnets to connect with each other, but the present invention is not necessarily limited thereto. For example, although not shown, the connection member 13 is, for example, a hooked member having a hole or a insertion slit, and the connection member 9 is, for example, a hooked protrusion inserted into a hole or a insertion slit of the hooked member It is good also as a hook member which has.

1 pull rope attachment fixture 2 base 3 column portion 31 connecting member (fourth connecting member)
4 support thread member 7 arm member 71 base side arm component member 72 tip side arm component member 721 connecting member (third connecting member)
8 connecting mechanism 9 connecting member (first connecting member)
12 thread member 13 connection member (second connection member)
14 Visual recognition member 19 Guide portion 20 Pull-out / take-up member P Operation rod R Pull rope

Claims (4)

A base connected to the operating rod,
The base is located on the side opposite to the side connected to the operation rod, and from the state where the tip is opposite to the base via the connection mechanism to the base side arm component and the base side arm component An arm having a distal arm component member connected so as to be capable of rotating so as to return to the opposite side to the base after rotating to the base side and having a first connection member at the tip Members,
After extending from the base side portion to the tip end portion while being caught by the arm member along the outer side in the longitudinal direction of the arm member, it is pulled out from the tip end portion and can be connected to the first connection member And a thread-like member having a connecting member at its tip,
By displacing the threadlike member to the base side, a rotational force for rotating the tip of the tip arm component toward the base is given to the tip arm component and the tip side The rotation restricting means restricts the rotation of the distal end side arm component so that the arm component stops at a desired position,
The second connection member of the thread member is in a state in which the tip end arm component member is rotated to a position regulated by the rotation restricting means and the thread member is pulled out from the tip end portion of the tip end arm component member. A device for attaching a pull rope, characterized in that an encircling portion is formed by the filamentous member and the arm member by being connected to a first connection member at the tip of the arm member.   The hooking of the thread-like member to the arm member is performed by passing it through a guide portion provided on the base side arm component and the tip side arm component, and the most part of the base side arm component In the state where the thread-like member is stretched between the guide portion on the connection mechanism side and the guide portion on the connection mechanism side of the tip end side arm component member, the tip end side arm component member is provided on the base side The device for attaching a pull rope according to claim 1 or 2, wherein a directed rotational force is applied.   The member for visual recognition for visually recognizing the said 2nd connection member is arrange | positioned in the site | part pulled out from the front-end | tip site | part of the said tip side arm component of the said linear member, The member for visual recognition characterized by the above-mentioned An apparatus for attaching a pull rope according to Item 2. The base further includes a rod-like columnar portion connected to the base on the side opposite to the side connected to the operation rod;
The columnar portion is fixed in a state in which the base side arm component members are in parallel, and as the rotation restricting means of the tip end side arm component members, one end is connected to the tip side arm component member and loosened by relaxation. The other ends of the support thread members for restricting the rotation of the arm components are connected;
The third connection member of the tip end arm component member and the fourth connection member of the pole portion can be connected in parallel with the column portion and the tip arm component member. Together with
The second connection member of the thread member is a third connection member or pillar of the arm member in the connection state in a state where the second connection member is drawn out from the tip end portion of the tip end side arm component member by a desired length. The device for attaching a pull rope according to claim 1, which is connectable to a fourth connection member of the part.

Images