Remote-controlled tree-cutting device for topping

Abstract

To provide a remote-controlled tree-cutting device for topping that can be stably and securely attached even to a tip of a main trunk of a tree.SOLUTION: A remote-controlled tree-cutting device for topping is attached to a tip of a main trunk of a tree to be cut and cuts the tree by remote control. The device is equipped with a mounting frame 10 having a main body 10a and a holding part 10b that clamp and fix a tree 40. The main body of the mounting frame includes: a mounting member 14 whose longitudinal direction is arranged in a major axis direction of the tree and in which a mounting surface to the tree is formed in a sawtooth shape; a mounting member 13 that mounts a slide table in a tangential direction of the tree; and a first support member 15 that is installed in the tangential direction of the tree. The holding part of the mounting frame includes: a second support member 17 that is provided opposite the first support member; and a fixing member 18 that is joined to the second support member and in which a mounting surface to the tree is formed in a sawtooth shape. The tree is then clamped between the first and second support members, and the first and second support members are fixed with a pair of fasteners 11-1, 11-2, 12-1, and 12-2.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a remotely operated core-stopping tree felling device that is attached to the tip of the trunk of a tree to be felled and cuts the tree by remote control. [Background technology]

[0002] Patent Document 1 describes a shoulder-carrying, remotely operated felling device that can be disassembled into multiple parts and easily transported to mountainous areas by hand and assembled, and that cuts down trees by remote control.

[0003] Furthermore, Patent Document 2 describes a remote-controlled electric tree-cutting device that is quieter, has less vibration, and is lighter in weight, by mounting an electric chainsaw on a movable platform. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2013-240959 A [Patent Document 2] Utility Model Registration No. 3240179 Summary of the Invention [Problem to be solved by the invention]

[0005] By the way, there are two types of felling: "root cutting", in which the tree is cut from the base, and "core cutting", in which only the tip is cut.

[0006] The felling devices in Patent Documents 1 and 2 are both designed for root-cutting felling, and are configured so that the chain of a chain block is wrapped around the base of the tree to be felled, the hook of the chain block is engaged with the mounting frame, the chain block is tightened, and the mounting frame is attached to the cutting portion of the tree.

[0007] However, when performing core-stop felling, it is difficult to ensure a sufficient contact area between the tree and the chain of the chain block because the felling equipment is attached to the thin part near the tip of the trunk of the tree. This reduces the attachment strength of the felling equipment, which can cause it to loosen or shift when the chainsaw is in operation.

[0008] The present invention has been made in consideration of the above-mentioned circumstances, and its object is to provide a remotely operated core-stopping felling device that can be stably and securely attached even to the tip of a tree's main trunk. [Means for solving the problem]

[0009] The remotely operated tree felling device for core stopping according to the present invention comprises a mounting base having a main body and a restraining part for clamping and fixing a tree, and being attached to the tip of the trunk of a tree to be felled, a chainsaw carriage on which a chainsaw is detachably mounted, a slide table attached to the mounting base and for moving the chainsaw horizontally relative to the tree to be felled, movement means provided on the slide table for moving the chainsaw carriage horizontally relative to the mounting base, and control means for remotely controlling the movement means and the chainsaw from outside the tree felling range, the main body of the mounting base having a mounting member whose longitudinal direction is oriented in the axial direction of the tree and whose mounting surface for the tree is formed in a sawtooth shape, and a mounting member joined to the mounting member in the radial direction of the tree, the slide table being tangent to the tree The tree felling device comprises a mounting member which is attached in a tangential direction to the tree and a first support member which is installed in the center of the mounting member in a tangential direction to the tree, and a holding portion of the mounting frame comprises a second support member which is provided opposite the first support member in the tangential direction to the tree and a fixing member which is joined in a cross shape to the center of the second support member and has a sawtooth-shaped mounting surface for the tree, the tree is sandwiched between the first support member and the second support member, and the first support member and the second support member are fixed with a pair of fasteners, and the mounting frame, slide table, and chainsaw are transported separately, the mounting frame is attached to the tip of the main trunk of the tree to be felled, the slide table is attached to the mounting frame, the chainsaw is mounted on the chainsaw mobile base and assembled, and the tree is felled by remote control using the control means, thereby solving the above-mentioned problem.

[0010] In addition, the mounting member, the attachment member and the first support member of the main body are each made of channel material, the second support member and the fixing member are each made of channel material, and the contact portions of the two flanges of the mounting member and the contact portions of the two flanges of the fixing member with the tree are each sawtooth-shaped, thereby solving the above-mentioned problem.

[0011] Furthermore, the fastening device is a pair of wing bolts and nuts that fasten the first support member and the second support member, which are positioned on either side of the tree, together, thereby solving the above-mentioned problem.

[0012] In addition, the slide table has a frame-shaped body that is attached to the mounting frame, and the chainsaw moving table is moved back and forth horizontally along the longitudinal direction of the frame-shaped body by the moving means, thereby solving the above-mentioned problem.

[0013] In addition, the control means controls the moving means and the chainsaw via a wired or wireless connection from outside the tree-falling range, thereby solving the above-mentioned problem.

[0014] In addition, the control means comprises a transmitter that transmits commands, a receiver that receives commands from the transmitter, a servo motor that controls the drive device of the chainsaw moving table based on the commands received by the receiver, and a linear actuator unit that controls the throttle of the chainsaw based on the commands received by the receiver, thereby solving the above-mentioned problem. Effect of the Invention

[0015] The mounting stand is composed of a main body that clamps and secures the tree, and a retaining part, and is arranged with its longitudinal direction along the long axis of the tree.The mounting member has a sawtooth-shaped mounting surface for the tree, so that even in thin trees, the mounting member can be fixed by contacting it over a long distance in the long axis direction of the tree, ensuring a large contact area and increasing resistance with the bark to prevent slippage.

[0016] Therefore, it is possible to provide a remotely operated core-stopping felling device that can be stably and securely attached even to the tip of a tree trunk. [Brief description of the drawings]

[0017] [Figure 1] 1 is an exploded perspective view showing a schematic configuration of a remotely operated core-stopping felling device according to an embodiment of the present invention; [Diagram 2] 2 is a perspective view showing a state before and after the mounting stand of the remotely operated core-stopping felling device shown in FIG. 1 is mounted on a tree. FIG. [Diagram 3] 3 is a perspective view showing a state in which a slide table and a chain saw are attached to the mounting stand shown in FIG. 2. FIG. [Figure 4] FIG. 4 is a perspective view showing a state in which the chain saw shown in FIG. 3 has been moved. [Diagram 5] FIG. 5 is a perspective view of FIG. 4 as seen from the rear side. [Figure 6] 1 is a plan view showing the state in which the core-stopping remote-operated felling device is attached to a tree. FIG. [Figure 7] FIG. 7 is a rear view of FIG. [Figure 8] FIG. 7 is a side view of FIG. 6. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0019] 1 shows a schematic configuration of a remotely operated tree-cutting device for core-stopping according to an embodiment of the present invention. This tree-cutting device includes a mounting base 10, a sliding table 20, and a chainsaw 30. The mounting base 10 has a main body 10a and a retaining part 10b that clamp and secure the tree, and is attached to a thin part near the tip of the main trunk of a tree 40 to be cut using fasteners consisting of wing bolts 11-1 and 11-2 and nuts 12-1 and 12-2 (or bolts and nuts).

[0020] The slide table 20 is attached to the mounting member 13 of the main body 10a of the mounting frame 10 with bolts 21-1, 21-2 and nuts 22-1, 22-2. A chainsaw 30 is detachably mounted on a chainsaw carriage 23 of the slide table 20. The chainsaw carriage 23 is designed so that commercially available engine-powered, rechargeable, and electric chainsaws can be interchangeably mounted thereon.

[0021] The chainsaw carriage 23 is adapted to reciprocate longitudinally on the slide table 20, and the chainsaw 30 mounted on the chainsaw carriage 23 is moved horizontally to cut down trees 40.

[0022] The mounting base 10, slide table 20, chain saw 30, etc. are separated and manually transported to a mountainous area, etc. Then, the tip of the trunk of a tree 40 to be felled is sandwiched between the body 10a and the holding part 10b of the mounting base 10 and fixed with wing bolts 11-1, 11-2 and nuts 12-1, 12-2.

[0023] Next, the slide table 20 is attached to the mounting stand 10, the chain saw 30 is mounted on the chain saw moving stand 23, and the machine is assembled, and trees are cut down by remote control.

[0024] 2(a) and (b) show the mounting rack 10 before and after it has been attached to a tree 40. The main body 10a of the mounting rack 10 is made up of a mounting member 13 for mounting the slide table 20, a mounting member 14 that serves as the mounting surface for the tree 40, and a first support member 15 that, together with the retaining portion 10b, clamps and fixes the tree 40. The mounting member 13, mounting member 14, and first support member 15 are made of channel material.

[0025] That is, the mounting member 14 of the main body 10a is arranged such that its longitudinal direction is in the longitudinal direction (Y direction) of the tree 40, and the contact portions of the two flanges with the tree 40 are formed in a sawtooth shape. Also, a screw hole 19-1a and a nut (not shown) for inserting a wing bolt 19-1 are provided at the bottom of the mounting member 14. The mounting member 13 is joined to the mounting member 14 in the radial direction (X direction) of the tree 40, and the slide table 20 is attached in the tangential direction (Z direction) of the tree 40. The first support member 15 is installed in the center of the mounting member 14 in the tangential direction of the tree 40.

[0026] With this configuration, when the mounting rack 10 is attached to the tree 40, the mounting member 14 can be in contact with the tree 40 over a long distance in the longitudinal direction, even in the thin part near the tip of the tree 40, ensuring a large contact area, while the sawtooth parts of the two flanges and the sharp tip of the wing bolt 19-1 increase resistance with the bark, preventing slippage. Also, the tip of the wing bolt 19-1 can be screwed into the tree 40 as necessary to further increase the fixing strength.

[0027] The end of the mounting member 13 is joined to the outside of the tip of the web of the attachment member 14 and fixed by reinforcing plates 16-1 and 16-2. The reinforcing plates 16-1 and 16-2 are fixed to the flanges of the mounting member 13 and the attachment member 14 with rivets (bolts and nuts or welding are also acceptable). The web of the first support member 15 is fixed in a cross shape to the center of the web of the attachment member 14 by welding or a wing bolt and nut.

[0028] On the other hand, the holding portion 10b is composed of a second supporting member 17 arranged in the tangential direction of the tree 40 facing the first supporting member 15, and a fixing member 18 arranged in a cross shape in the center of the web of this second supporting member 17. The second supporting member 17 and the fixing member 18 are made of channel material, and are fixed in a cross shape with a wing bolt 19-2 and a nut (not shown).

[0029] In addition, the contact portions of the two flanges of the fixing member 18 with the tree 40 are serrated to increase resistance with the bark and prevent slippage when the mounting rack 10 is attached to the tree 40. The second support member 17 and the fixing member 18 may be welded together instead of using the wing bolt 19 and nut, but by using the wing bolt 19-2, the pointed tip of the wing bolt 19-2 can increase resistance with the bark.

[0030] In addition, the first support member 15 and the second support member 17 are provided with a plurality of bolt holes, so that the positions of the wing bolts 11-1, 11-2 and the nuts 12-1, 12-2 can be changed depending on the thickness of the tree 40 to be felled.

[0031] Moreover, the channel material constituting each member of the mounting rack 10 is made of a material such as aluminum in order to reduce weight.

[0032] As shown in Figures 3 and 4, the slide table 20 includes a frame 24 formed by fixing square pipes (or L-shaped angles) 24a, 24b, 24c, and 24d made of aluminum or the like by welding or the like, and moving rails 26-1 and 26-2 installed on the square pipes 24c and 24d in the longitudinal direction. A drive shaft (linear shaft) 25 arranged along the longitudinal direction is inserted into the frame 24. The square pipes 24a and 24b in the short side direction of the frame 24 support both ends of the drive shaft 25 arranged along the longitudinal direction.

[0033] One end of the drive shaft 25 is adapted to be rotated by a motor (drive device) M. A support member 23a is provided on the drive shaft 25. The support member 23a has a female screw hole that is rotatably provided in a state where it is screwed into and inserted into the drive shaft 25, and is fixed to the underside of the chainsaw movable table 23.

[0034] The support member 23a converts the rotational motion of the drive shaft 25 into horizontal motion, horizontally reciprocating the chainsaw moving platform 23. In this manner, the support member 23a, the drive shaft 25, the moving rails 26-1 and 26-2, the motor M, etc. function as a moving means.

[0035] Furthermore, a shock guard 25a that spins freely when a load is applied is provided at one end of the drive shaft 25. The central portions of the square pipes 24c and 24d are attached to the mounting member 13 of the mounting base 10 with bolts 21-1 and 21-2 and nuts 22-1 and 22-2.

[0036] As shown in FIG. 1, L-shaped angle members 27-1 to 27-4 are provided upright on the chainsaw moving platform 23 on the slide table 20, and a chainsaw 30 is fixed to these L-shaped angle members 27-1 to 27-4 and moves back and forth horizontally along the longitudinal direction on the frame-shaped body 24.

[0037] The chainsaw moving platform 23 is provided with a throttle operating device 28 for operating the throttle of the chainsaw 30, and a control device 29 for the motor M. The throttle operating device 28 includes a linear actuator unit and a linear motion guide (LM guide). In this example, a radio control unit is used, and the control device 29 includes a receiver, a servo motor, etc.

[0038] When the receiver receives commands or instructions sent by operating a transmitter (not shown), the receiver activates the servo motor and linear actuator unit to control the on / off and rotation direction of motor M, as well as control the throttle lever using the LM guide, which uses rolling to guide the linear motion part.

[0039] This makes it possible to operate the throttle of the chainsaw 30 and control the rotation of the motor M from outside the tree-falling range. Of course, since remote control from outside the tree-falling range is all that is required, it is also perfectly possible to use a wired control unit.

[0040] 6 to 8 are respectively a plan view, a rear view, and a side view showing the state in which the remote-operated felling device for core stopping is attached to a tree. First, an operator assembles and attaches the remote-operated felling device for core stopping to a thin part near the tip of the trunk of the tree 40, for example, by climbing alone or using a single ladder or a climbing tool.

[0041] Then, a transmitter transmits a felling command from a safe position on the ground. This command is received by the receiver of the remote-operated felling device for core stopping, and based on the command received by the receiver, a servo motor that controls the motor M, which is the driving device, is controlled to horizontally move the chainsaw moving platform 23 of the slide table 20. Also, based on the command received by the receiver, the linear actuator unit controls the throttle 30c of the chainsaw 30 to perform throttle operation.

[0042] As a result, the chainsaw carrier 23 moves horizontally along the longitudinal direction of the slide table 20, causing the guide bar 30a of the chainsaw 30 to move horizontally as indicated by the arrow, and the tree 40 is cut down by the saw chain 30b which rotates along the outer periphery of the guide bar 30a.

[0043] At this time, the sawtooth contact portions of the two flanges of the mounting member 14 and the pointed tip of the wing bolt 19-1 are positioned in the longitudinal direction of the tree 40, perpendicular to the horizontal direction in which the chainsaw carrier 23 moves, thereby reducing shaking and wobbling during reciprocating movement.

[0044] After felling is completed, the remote-operated core-stopping felling device is disassembled and removed in the reverse order of installation.

[0045] According to the present invention, by using a mounting member whose longitudinal direction is arranged along the longitudinal axis of the tree and whose mounting surface to the tree is formed in a sawtooth shape, the mounting member can be brought into contact with the tree over a long distance along the longitudinal axis of the tree even in the case of a thin tree, ensuring a contact area and increasing the resistance with the bark to prevent slippage. Therefore, stable and strong mounting can be achieved even at the tip of the trunk of the tree.

[0046] Moreover, it is possible to minimize the amount of work done at heights that requires unstable footing, such as bare climbing or using a single ladder or climbing device, and since workers can evacuate to areas outside the area of ​​fallen trees in advance, it is possible to improve work safety and prevent personal injuries. In addition, it is possible to reduce the amount of time workers use chainsaws, which helps prevent occupational diseases such as white finger disease.

[0047] Furthermore, since the mounting base, slide table, and chainsaw can be transported separately, it can be easily transported to mountainous areas by hand. Also, assembly can be done by attaching the mounting base to the tree to be felled, attaching the slide table to the mounting base, and mounting the chainsaw on the chainsaw carrier, which simplifies the installation process.

[0048] In addition, the core-stopping remote-controlled tree-cutting device can be manufactured by utilizing existing wired or wireless control means, general-purpose products such as chainsaws and chain blocks, so development and manufacturing costs are low.

[0049] In the case of wireless control means, commercially available radio control units such as transmitters, receivers, servo motors, and linear actuator units can be used, making them relatively inexpensive. In addition, existing wired or wireless control means, general-purpose products such as chainsaws and chain blocks can be used, so development and manufacturing costs are low. Moreover, the components are made of inexpensive materials and are versatile, and the structure can be realized with minimal cost.

[0050] The present invention is not limited to the above-described embodiment, but can be modified in various ways without departing from the spirit and scope of the present invention.

[0051] For example, although an example has been described in which each component is made from aluminum, it is of course not limited to aluminum, and other materials or combinations of multiple materials may be used as long as they are relatively lightweight and have sufficient strength. [Explanation of symbols]

[0052] 10 Mounting stand 10a Main unit 10b Retaining part 11-1, 11-2 Wing bolt (fastener) 12-1, 12-2 Nuts (fasteners) 13 Mounting material 14 Mounting material 15 First Support Member 16-1, 16-2 Reinforcement plate 17 Second Support Member 18 Fixing material 19-1,19-2 Wing bolt 20 Slide table 21-1,21-2 Bolts 22-1,22-2 Nut twenty three Chainsaw mobile stand 23a Support member twenty four Frame-shaped body 24a, 24b, 24c, 24d Square pipe twenty five propulsion shaft 25a Shock Guard 26-1, 26-2 Moving rail 27-1~27-4 L-shaped angle material 28 Throttle control device 29 Control device 30 Chainsaw 30a guide bar 30b saw chain 30c throttle 40 Trees M Motor

Claims

1. A mounting stand having a main body and a holding part for clamping and fixing the tree, the mounting stand being attached to the tip of the trunk of the tree to be felled; a slide table having a chainsaw movable base on which a chainsaw is detachably mounted, the slide table being attached to the mounting frame and configured to move the chainsaw in a horizontal direction relative to the tree to be felled; a moving means provided on the slide table for moving the chain saw moving platform in a horizontal direction relative to the mounting base; The tree felling tool further includes a control means for remotely controlling the moving means and the chain saw from outside the tree felling range, The body of the mounting rack includes a mounting member whose longitudinal direction is arranged in the longitudinal direction of the tree and whose mounting surface for mounting to the tree is formed in a sawtooth shape, a mounting member joined to the mounting member in the radial direction of the tree and to which the slide table is attached in the tangential direction of the tree, and a first support member installed in the center of the mounting member in the tangential direction of the tree, The holding portion of the mounting rack includes a second support member provided in a tangential direction of the tree opposite the first support member, and a fixing member joined in a cross shape to the center of the second support member and having a mounting surface for mounting to the tree formed in a sawtooth shape, a tree is sandwiched between the first support member and the second support member, and the first support member and the second support member are fixed with a pair of fasteners; The mounting frame, the slide table and the chain saw are transported separately, the mounting frame is attached to the tip of the trunk of the tree to be felled, the slide table is attached to the mounting frame, the chain saw is mounted on the chain saw moving base and assembled, and the tree is felled by remote control using the control means. A remotely operated felling device for core setting.

2. The mounting member, the attachment member, and the first support member of the main body are each made of a channel material, The second support member and the fixing member are each formed of a channel material, 2. The remote-operated felling device for core setting according to claim 1, wherein the contact portions of the two flanges of the mounting member and the contact portions of the two flanges of the fixing member are each serrated.

3. 2. The remotely operated core-stopping felling device according to claim 1, wherein the fastening device is a pair of wing bolts and nuts that fasten the first support member and the second support member, which are arranged on either side of the tree, together by sandwiching the tree.

4. 2. The remotely operated felling device for core stopping as described in claim 1, wherein the slide table has a frame-shaped body attached to the mounting frame, and the chainsaw moving platform is moved back and forth horizontally along the longitudinal direction of the frame-shaped body by the moving means.

5. 2. The remote-operated tree-cutting device for core-stopping according to claim 1, wherein the control means controls the moving means and the chain saw from outside a tree-cutting range by wire or wirelessly.

6. 6. The remote-controlled felling device for core stopping according to claim 5, wherein the control means comprises a transmitter for transmitting commands, a receiver for receiving commands from the transmitter, a servo motor for controlling a drive device of the chainsaw carriage based on the commands received by the receiver, and a linear actuator unit for controlling a throttle of the chainsaw based on the commands received by the receiver.

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