Remote controlled felling device for core stopping

Abstract

To provide a remote control deforestation device for core stopping which is excellent in light weight and size reduction, and can improve safety property and working property.SOLUTION: There is provided a remote control deforestation device for core stopping which is fitted to a tip of a trunk of a tree 40 to be deforested, and cuts the tree by remote control. The remote control deforestation device comprises: a slide table 20 which has a chain saw movable carriage 23 on which a chain saw 30 is detachably mounted, the slide table being mounted on a frame body 10a and moving the chain saw in a horizontal direction to the tree to be deforested. The slide table comprises: a table body 20a formed of a channel material; a propeller shaft 25 arranged along a longitudinal direction between two flanges of the table body; first and second propeller shaft support members 25b, 25c each of which is arranged on one / the other of both ends of the table body in the longitudinal direction, for supporting the propeller shafts; a pair of slide packs 20d, 20e each of which is arranged on one / the other of both sides of two flanges on the table body; and a drive unit for driving the propeller shaft to rotate.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a remotely operated core-stopping 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] There are two types of tree felling: "root-cutting felling," in which trees are cut from the root, and "core-stopping felling," in which only the tip is cut. The tree felling machines in Patent Documents 1 and 2 are both designed for root-cutting felling, and are shoulder-carrying types that are disassembled into multiple parts and transported manually to mountainous areas, where they are assembled and used, making them lightweight.

[0006] However, when performing core-stop felling, it is necessary to carry the disassembled parts of the felling equipment to a high position in the tree by climbing alone or using a single ladder or climbing device, and then assemble and install them. This means working at high altitudes on unstable footing, so in order to improve safety and workability, it is necessary to make the equipment as light and compact as possible.

[0007] 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 is lightweight and compact, and that improves safety and operability. [Means for solving the problem]

[0008] The remotely operated tree felling device for core stopping according to the present invention comprises a mounting base which is attached to the tip of the trunk of a tree to be felled, a chainsaw carriage on which a chainsaw is removably mounted, a slide table which is attached to the mounting base and moves the chainsaw horizontally relative to the tree to be felled, movement means which is provided on the slide table and moves the chainsaw carriage horizontally relative to the mounting base, and control means which remotely controls the movement means and the chainsaw from outside the tree felling range, the slide table comprising a table body made of a long channel material and a table support member for supporting the table. a drive shaft arranged in the longitudinal direction between two flanges of the table body, first and second drive shaft support members arranged at both longitudinal ends of the table body and supporting the drive shaft, first and second slide packs installed on both outer sides of the two flanges of the table body, and a drive unit for driving and rotating the drive shaft, the chainsaw carriage having a female screw hole rotatably provided in a state where it is screwed into and inserted into the drive shaft and a third drive shaft support member fixed to the underside of the chainsaw carriage, the drive shaft reciprocating horizontally along the longitudinal direction of the table body by the rotation of the drive shaft, Each of the first and second slide packs includes a slide rail disposed on the outer side of the flange in the longitudinal direction of the table body, a mounting plate installed on the slide rail, and a slider incorporating a plurality of balls disposed between the slide rail and the mounting plate, for linearly moving the mounting plate along the slide rail;The above-mentioned problem was solved by transporting the mounting frame, slide table and chainsaw separately, attaching the mounting frame to the tip of the main trunk of the tree to be felled, installing the slide table on the mounting frame, mounting the chainsaw on the chainsaw mobile base and assembling it, and felling the tree by remote control using the control means.

[0010] Furthermore, the mounting rack has a rack main body and a restraining portion that clamps and secures the tree, and the rack main body comprises a mounting member whose longitudinal direction is arranged in the longitudinal direction of the tree and whose mounting surface to the tree is formed in a sawtooth shape, a mounting member that is 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 tree support member installed in the central part of the mounting member in the tangential direction of the tree, and the restraining portion of the mounting rack comprises a second tree support member that is provided in the tangential direction of the tree opposite the first tree support member, and a fixing member that is joined in a cross shape to the central part of the second tree support member and whose mounting surface to the tree is formed in a sawtooth shape, and the tree is clamped between the first tree support member and the second tree support member, and the first tree support member and the second tree support member are fixed with a pair of fasteners, thereby solving the above-mentioned problem.

[0011] In addition, the mounting member, the attachment member and the first tree support member of the mounting body are each made of channel material, the second tree 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.

[0012] In addition, the fastening device is a pair of wing bolts and nuts that fasten the first tree support member and the second tree support member, which are positioned on either side of the tree, 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] Furthermore, 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] By configuring the slide table from a table body made of a long channel material, a drive shaft, first and second drive shaft support members, first and second slide packs, and a drive unit, the slide table can be made lightweight and compact.

[0016] Furthermore, by using the first and second slide packs, the chainsaw carrier can be smoothly moved back and forth horizontally along the longitudinal direction of the table body while maintaining sufficient strength.

[0017] Therefore, it is possible to provide a remotely operated core-stopping felling device that is lightweight and compact, and that can improve safety and operability. [Brief description of the drawings]

[0018] [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] FIG. 2 is a perspective view showing the remotely operated core-stopping felling device shown in FIG. 1 in an assembled state. [Diagram 3] 3 is a perspective view showing a state in which the chain saw shown in FIG. 2 has been moved. [Figure 4] FIG. 3 is a perspective view of FIG. 2 as seen from below on the rear side. [Diagram 5]5 is a partially cutaway perspective view of a slide pack provided on a side of a slide table in the remotely operated core-stopping felling device shown in FIGS. 1 to 4, and a cross-sectional view taken along line A-A' of the slide pack. FIG. [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

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0020] 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 base body 10a and a retaining part 10b that clamp and secure a 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).

[0021] The slide table 20 is attached to the mounting member 13 of the frame body 10a using L-shaped brackets 21-1, 21-2 with bolts 22-1a, 22-2a and nuts 22-1b, 22-2b. 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 mounted interchangeably.

[0022] In addition, the chainsaw carriage 23 is adapted to move back and forth in the longitudinal direction on the slide table 20 as indicated by the arrow AA, and the chainsaw 30 mounted on the chainsaw carriage 23 is moved horizontally to cut down the tree 40.

[0023] 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 clamped between the base body 10a and the holding part 10b and fixed with wing bolts 11-1, 11-2 and nuts 12-1, 12-2. Next, the slide table 20 is attached to the mounting base 10, the chain saw 30 is mounted on the chain saw moving base 23, and assembled, and the tree is felled by remote control.

[0024] Figures 2 to 4 respectively show the assembled state of the remotely operated core-stopping felling device shown in Figure 1, with Figure 2 being a perspective view, Figure 3 being a perspective view showing the state in which the chainsaw has been moved, and Figure 4 being a perspective view of Figure 2 as seen from below on the rear side. The stand body 10a is made up of a mounting member 13 for mounting the slide table 20, a mounting member 14 which serves as a mounting surface for the tree 40, and a first tree support member 15 which, together with the retaining part 10b, clamps and fixes the tree 40. The mounting member 13, mounting member 14, and first tree support member 15 are made of channel material.

[0025] That is, the mounting member 14 of the frame 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 tree 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 and preventing slippage by increasing the resistance with the bark via the serrated parts of the two flanges and the pointed tip of the wing bolt 19-1. The fixing strength can be further increased by screwing the tip of the wing bolt 19-1 into the tree 40 as necessary.

[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 mounting member 13 and the flanges of the attachment member 14 with rivets (bolts and nuts or welding are also acceptable).

[0028] On the other hand, the retaining portion 10b is composed of a second tree support member 17 that is disposed tangentially to the tree 40 facing the first tree support member 15, and a fixing member 18 that is disposed in a cross shape in the center of the web of this second tree support member 17. The second tree support 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 fixing member 18 with tree 40 are serrated to increase resistance with the bark and prevent slippage when mounting rack 10 is attached to tree 40. Second tree support member 17 and fixing member 18 may be welded together instead of using wing bolt 19 and nut, but by using wing bolt 19-2, the pointed tip of wing bolt 19-2 can increase resistance with the bark.

[0030] Furthermore, the first tree support member 15 and the second tree support member 17 are provided with a plurality of bolt holes, allowing the positions of the wing bolts 11-1, 11-2 and the nuts 12-1, 12-2 to 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] The slide table 20 has a table body 20a made of a long channel material. A drive shaft 25 is disposed along the longitudinal direction between two flanges of the table body 20a. At both ends of the longitudinal direction of the table body 20a, first and second drive shaft support members 25b, 25c for supporting the drive shaft 25 are provided. At both outer sides of the two flanges of the table body 20a, first and second slide packs 20d, 20e are provided. In addition, a motor (drive device) M for rotating one end of the drive shaft 25 is provided at one end of the table body 20a.

[0033] The third drive shaft support member 23a is installed on the drive shaft 25. This third drive shaft 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 chain saw moving base 23. The third drive shaft support member 23a converts the rotational motion of the drive shaft 25 into horizontal motion, and moves the chain saw moving base 23 back and forth in the horizontal direction along the longitudinal direction of the table body 20a. In this way, the third drive shaft support member 23a, the drive shaft 25, the first and second slide packs 20d and 20e, the motor M, etc. function as a moving means.

[0034] Furthermore, a shock guard 25a that spins freely when a load is applied is provided at one end of the drive shaft 25. The table body 20a is mounted on the mounting member 13 of the mounting base 10 with bolts 22-1a, 22-2a and nuts 22-1b, 22-2b so that the center of the table body 20a is sandwiched between the L-shaped metal fittings 21-1, 21-2.

[0035] As shown in FIG. 1, L-shaped angle members 27-1 to 27-4 are provided upright on the chainsaw carriage 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 on the slide table 20 along the longitudinal direction.

[0036] 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.

[0037] When the receiver receives a command or instruction 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 the motor M, and to control the throttle lever with an LM guide that uses rolling to guide the linear motion part. 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 operation from outside the tree-falling range is all that is required, it is also perfectly possible to use a wired control unit.

[0038] Fig. 5(a) is a perspective view showing the internal structure of a slide pack provided on a side of a slide table in the remote-controlled core-stopping felling device shown in Figs. 1 to 4. Fig. 5(b) is a cross-sectional view taken along line A-A' in Fig. 5(a).

[0039] The first and second slide packs 20d and 20e are linear motion systems in which a slider with balls mounted therein moves in an infinite linear motion by precision press molding of a ball case. By combining this ball case with a slide rail, it is possible to achieve a lightweight, compact and nimble linear motion.

[0040] More specifically, the first slide pack 20d is composed of a slide rail 51, stoppers 52 and 53, a mounting plate 54, a ball case 55, a number of balls 56, and a seal 57. The slide rail 51 is formed of a channel material or a plate material bent into a U-shape, and is fixed to the outside of one flange of the table main body 20a with bolts and nuts. A ball case 55 containing a number of balls 56 is disposed between the two flanges of the slide rail 51. Stoppers 52 and 53 are provided on both ends of the slide rail 51.

[0041] A ball case 55 containing a ball 56 is sandwiched between the mounting plate 54 and the web of the slide rail 51. The mounting plate 54, ball case 55, ball 56 and seal 57 function as a slider 58. The mounting plate 54 is fixed with bolts and nuts to mounting plates 59-1 and 59-2 fixed to the back surface of the chainsaw movable table 23 (see Figures 4, 7, 8, etc.).

[0042] The slide rail 51, the stoppers 52, 53, the mounting plate 54, the ball case 55, etc. are made of a stainless steel material having high strength and excellent toughness, such as an austenitic stainless steel material.

[0043] 5(a) and 5(b), the first slide pack 20d is taken as an example, but the second slide pack 20e has a similar configuration.

[0044] 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.

[0045] 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.

[0046] As a result, while the chainsaw 30 is operating, the chainsaw carriage 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 shown by arrow AB, and the tree 40 is cut down by the saw chain 30b which rotates along the outer periphery of the guide bar 30a.

[0047] 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.

[0048] After felling is completed, the remote-controlled core-stop felling device is disassembled and removed by reversing the installation procedure.

[0049] According to the present invention, the slide table is composed of a table body made of a long channel material, a drive shaft, first and second drive shaft support members, first and second slide packs, and a drive device, so that the slide table can be made lighter and more compact. In addition, by using the first and second slide packs, the chainsaw carriage can be smoothly reciprocated horizontally along the longitudinal direction of the table body while maintaining a necessary and sufficient strength. This makes it possible to reduce the weight and size of the table, and improve safety and workability.

[0050] In addition, by having a mounting member whose longitudinal direction is aligned with the longitudinal axis of the tree and whose mounting surface to the tree is formed in a sawtooth shape, the mounting member can be in contact with the tree over a long distance in the longitudinal direction even for thin trees, ensuring a sufficient 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 tree's trunk.

[0051] Furthermore, working at heights in unstable conditions, such as by climbing directly or using a single ladder or climbing device, can be minimized, and workers can evacuate to outside the area of ​​fallen trees in advance, further improving work safety and preventing personal injury.

[0052] Furthermore, the lightweight mounting base and slide table make it easy to transport manually to mountainous areas. Also, assembly can be done simply by attaching the mounting base to the tree to be felled, attaching the slide table to the mounting base, and then mounting the chainsaw on the chainsaw carrier, simplifying the installation process.

[0053] 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.

[0054] 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 and versatile materials, and the structure can be realized with minimal cost.

[0055] 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.

[0056] 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]

[0057] 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 tree support member 16-1, 16-2…Reinforcement plate 17...Second tree support member 18...Fixing member 19-1, 19-2...Wing bolt 20…Slide table 20a…Table body 21-1, 21-2...L-shaped bracket 22-1a, 22-2a...Bolts 22-1b, 22-2b...Nut 23... Chainsaw mobile stand 23a...Third propeller shaft support member 25…propulsion shaft 25a…Shock Guard 25b, 25c...First and second propeller shaft support members 20d, 20e…1st and 2nd slide packs 27-1~27-4...L-shaped angle material 28...Throttle operation device 29...Control device 30. Chainsaw 30a…Guide bar 30b…Saw chain 30c…Throttle 40…Trees 51...Slide rail 52,53…Stopper 54…Mounting plate 55...Ball case 56…Ball 57...Seal 58…Slider 59-1, 59-2...Mounting plate M: Motor

Claims

1. A mounting frame that is attached to the tip of a main trunk of a 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 base and adapted to move the chainsaw in a horizontal direction relative to a 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 slide table includes a table body made of a long channel material, a drive shaft arranged along the longitudinal direction between two flanges of the table body, first and second drive shaft support members arranged at both ends of the longitudinal direction of the table body and supporting the drive shaft, first and second slide packs installed on both outer sides of the two flanges of the table body, and a drive device for rotating the drive shaft. the chainsaw carriage has a female screw hole that is rotatably provided in a state where the drive shaft is screwed into and inserted therethrough, and has a third drive shaft support member fixed to the underside of the chainsaw carriage, and is reciprocated horizontally along the longitudinal direction of the table body by rotation of the drive shaft; Each of the first and second slide packs includes a slide rail disposed on the outer side of the flange in the longitudinal direction of the table body, a mounting plate installed on the slide rail, and a slider incorporating a plurality of balls disposed between the slide rail and the mounting plate, for linearly moving the mounting plate along the slide rail; The mounting frame, the slide table and the chainsaw 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 chainsaw is mounted on the chainsaw carrier 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 base includes a base body and a clamping portion that clamps and fixes the tree, the mounting body 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 tree support member installed in the central part of the mounting member in the tangential direction of the tree; The holding portion of the mounting rack includes a second tree support member provided in a tangential direction of the tree opposite the first tree support member, and a fixing member joined in a cross shape to the center of the second tree support member and having a mounting surface for mounting to the tree formed in a sawtooth shape; 2. The remotely operated tree felling device for core setting as described in claim 1, wherein a tree is clamped between the first tree support member and the second tree support member, and the first tree support member and the second tree support member are fixed together with a pair of fasteners.

3. The mounting member, the attachment member, and the first tree support member of the rack body are each made of a channel material, the second tree support member and the fastening member are each constructed from a channel material; 3. The remote-operated felling device for core setting according to claim 2, 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.

4. 3. The remotely operated tree cutting device for core setting according to claim 2, wherein the fastening device is a pair of wing bolts and nuts that fasten the first tree support member and the second tree support member, which are arranged on either side of the tree, together with the tree in between.

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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