JPH08331986A - Powered nipping type pruner - Google Patents

Abstract

PURPOSE: To provide a powered nipping type pruner, equipped with a nipping type cutter, etc., supported by a tool supporting device arranged on a swivel slide and shaking and operating in a plane parallel to the shaft center of a columnar unit, capable of reducing the conveyance weight and excellent in handleability, labor saving and cutting performances and suitable for producing precious wood. CONSTITUTION: This powered nipping type pruner is obtained by installing a powered nipping type cutter 400 on a swivel slide enabling the cutter 400 to conform to a branch 2 according to the lifting and lowering control with a lifting and lowering device 200 and turning control of the cutter 400 so as to cut the branch 2 in the lifting and lowering device 200, having guide wheels 230 and 240, a nipping wheel 260 for nipping a tree as a columnar unit 1 and a brake device 290 and lifting and lowering along the columnar unit 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power pruning device for cutting branches while raising a standing tree, and in particular, by obtaining a fine branch cutting section, it is possible to prevent rotting from a cut surface. At the time of branch cutting, the device can be easily attached to and detached from the tree, and the work part and the power part can be separated, so that the carrying weight for handling can be reduced and the handleability can be improved. The present invention relates to a power type pruning device.

[0002]

2. Description of the Related Art As a pruning machine suitable for cutting a branch of a standing tree during work at a high place, a power type pruning machine is, for example, Jikken Sho 60-33813 from the viewpoint of labor saving and safety.
Publication No. 59-34287, Japanese Patent Publication No. 3-5
It is known in Japanese Patent No. 2926, etc.

In the automatic tree pruning machine described in Japanese Utility Model Publication No. 60-33813, a power saw device driven by an engine is integrally arranged in a machine frame, and a guide is provided at a position crossing the trunk of the machine frame. A traveling device with crawler wheels, in which wheels are arranged so as to have a predetermined helix angle with respect to a tree trunk, and which is driven by an engine and driven by a drive transmission device having a forward / reverse / idle control device, ,
Make sure that the crawler wheel has the same helix angle as the guide wheel,
It is arranged integrally. The engine is a power source common to the power saw device and the traveling device. During the up-and-down motion, the power saw device moves up and down while making a spiral motion with respect to the trunk due to the spiral angle arrangement of the guide wheels and the crawler wheels. The branches are cut when the power saw device moves upward. A chain saw is used as the saw of the power saw device for cutting the branches. When the control device is operated by a timer or a wireless device to switch the rotation direction of the drive transmission device from normal rotation to reverse rotation, the ascending motion is switched to the descending motion.

In Japanese Utility Model Publication No. 59-34287, except that a crawler belt device is used as a traveling device,
A power pruning machine similar to that described in Japanese Utility Model Publication No. 60-33813 is described.

In the pruning machine described in Japanese Examined Patent Publication No. 3-52926, the lifting wheels are evenly arranged in the circumferential direction, and the wheels are provided with links so that they can be moved from three directions in the radial direction of the standing tree. It is attached to the main body via. The engine on the rotating part side drives the cutting part composed of a chain type power saw and the wheels of the main body part. The power unit that drives the lifting wheels transmits the output of the engine to a ring gear that can be opened and closed, and drives the wheels by a gear that meshes with the ring gear.
In this way, the protruding branches are cut while moving up and down along the tree in the axial direction of the tree. Even if the outer diameter of the trunk changes with the rise and fall of the pruning machine, the machine frame is maintained so as not to be displaced from the axis of the trunk.

[0006]

In the conventional automatic pruning machine, a circular saw or a chain saw is used as the cutting device. However, the cutting surface pruned by the saw-type cutting device is inevitably a rough cutting surface, and this rough cutting surface has poor drainage of moisture such as rain and dew, and the cutting surface tends to rot easily. It was inconvenient to get the name tree. For this reason, a cutting device that can obtain a dense cut surface has been desired.

Further, in order to obtain a knotless tree, it is desirable that the pruning is carried out along the surface of the bark of the tree trunk. However, when a saw-type cutting device is used, the tooth flank of the saw is placed on the surface of the bark. In order to make them coincide with each other, the structure of the device becomes too complicated, and therefore, it has been unavoidable to leave some uncut portions at the initial branch cutting position by the conventional saw cutting device. The part left uncut from the surface of the bark is a carcass part of the tree and has stopped growing, so that it becomes a covered node as the remaining part of the tree grows. This deteriorates the quality of the quality wood obtained by sawing and reduces the yield.

In the conventional pruning machine, an internal combustion engine is used as a power source of power for cutting and power for traveling. Since this internal combustion engine is used as the only power source common to cutting and running, the cutting part and the running part are integrated so that they can be easily divided and transported. That is not taken into consideration. Therefore, the pruning device is transported as a whole, and for example, a forestry worker is forced to carry the pruning device, which is a heavy load that cannot be divided, on a mountain path while carrying the pruning device. When pruning work is carried out by attaching to a tree, there is a problem that the pruning device is complicated and therefore handling such as adjustment is difficult.

Further, in the conventional pruning machine, the spiral motion and the saw cutting motion are combined, or the spiral motion and the saw cutting motion obtained by combining the linear lifting motion and the swivel motion are combined. It was essential to coordinate the cutting motion with the lifting motion when cutting a branch in an unspecified orientation at a specific lifting position. It is unavoidable that the position of the branch and the position of the saw may not match even if multiple functions are interlocked and combined in this way. The configuration of the entire machine had to be complicated.

Therefore, an object of the present invention is to obtain a dense cut surface and to prun along the surface of the bark of the trunk,
It is possible to remotely separate the running part along the tree and the fixing part that can be fixed remotely, and to install a power pruning device that is simple in configuration and convenient for operation and transportation. Is to provide.

[0011]

According to the power type sandwich type pruning device of the present invention, a power source (100, 100A) for outputting a power medium such as compressed air or electricity and a power medium from the power source are used. Guide wheels (230, 240) including at least one drive wheel driven in forward and reverse rotations, and a pinching wheel for pinching a tree as a columnar body (1) that cooperates with the guide wheels and has an outer circumference with an annular cross section. (260) and a brake device (290), and an ascending / descending device (200) that ascends / descends along the axis of the columnar body, and a swivel drive device that is mounted on the ascending / descending device and operates by a power medium from the power source. (300) and a swivel base (3) that is swung by the swivel drive device to swivel forward and backward in a plane perpendicular to the axis of the columnar body.
60) and a tool supporting device (50) arranged on the swivel base.
0), a pinching type cutting device (400) which is supported by the tool supporting device and swings by a power medium from the power source in a plane parallel to the axis of the columnar body, and the lifting device ( 200), a turning drive device (300) and a sandwiching type cutting device (400), and a control device (700) for controlling the supply of the power medium by the power medium supply device (600). It has and.

The power source (100, 100A) is a portable air compressor (100) in which an air compressor and an engine for driving the air compressor are integrated, a generator and an engine for driving the generator. Is a portable power source such as a portable DC power generator (100A) such as a portable DC power generator or a battery (Claim 2), wherein the power source is an air compressor driven by an engine. In some cases, a discharge pressure detecting means for detecting the discharge pressure, an opening / closing valve for controlling the discharge pressure, and the opening / closing depending on the difference between the detection value detected by the discharge pressure detecting means and the set value. It works in conjunction with the discharge pressure control means for controlling the discharge pressure by adjusting the opening degree of the valve and the opening adjustment means for the intake throttle valve of the engine, and lowers the engine speed when the discharge pressure is equal to or higher than a predetermined value. Together and a linear displacement means operative to stop the power transmission action of the clutch (claim 3).

The lifting and lowering device (200), the swivel drive device (300) mounted on the lifting and lowering device, the sandwiching type cutting device (400) and the like are inseparable devices from the lifting and lowering device, and the lifting and lowering device is the other part. The power source (100), which can be arranged remotely to the device, and the control device (70) for controlling the supply of the power medium by the power medium supply device.
0) as a fixed part that can be fixed at a fixed position on the ground or the like, the motion part and the fixed part are a power medium supply device (680) that shares a power medium supply system, and a control signal is supplied. It is configured so as to be centrally and separably connected to each other via a control signal supply device (760) sharing the system (claim 4).

The lifting device (200) is provided with a back support on the machine frame, and is mounted on the lifting device (200).
The equipments are arranged on the machine frame so as not to become an obstacle when carrying the lifting device on the back using the back carrying portion (claim 5).

The lifting device (200) comprises a machine frame (21
0) and a plurality of pairs of guide wheels (23) arranged on one side of the machine casing at intervals in the longitudinal direction of the machine casing.
0, 240), and each guide wheel pair is composed of a pair of left and right guide wheels, and at least one pair of guide wheels of the plurality of guide wheel pairs is a drive wheel driven by a drive device (220). The pair of wheels forming each pair of guide wheels straddle the columnar body so that when they come into contact with the surface of the columnar body (1), the axes of the columnar bodies are expected to be equiangular from the same distance. It is arranged so as to be rotatable at various positions, so that it guides the machine frame in the axial direction of the columnar body for traveling (claim 6). The guide wheels of each pair may be rotatably supported by wheel shafts arranged in parallel with each other in the same plane (claim 7).
(0, 240) are integrally formed into a shape that is continuous in the axial direction with each other, the central portion is constricted, and the diameter is gradually increased toward both ends. The contour of the portion may be V-shaped (claim 8). The guide wheel pairs (2
30 and 240), the axis of each wheel shaft of a pair of wheels can be configured to intersect in a V shape in a plane perpendicular to the vertical direction of the machine frame of the lifting device (claim). Item 9), and the outer peripheral portion of the cross section passing through the axial center of the wheel forming each of the pair of guide wheels (230, 240) may be configured to project outward in a substantially arc shape (claim). 10).

In the elevating device (200), the guide wheel pair (230, 240) is arranged on the axial center of the columnar body (1) at a side portion on one end side in the longitudinal direction of the machine frame (210) of the elevating device. A swing arm (250) swingably supported as a branch by a shaft provided perpendicularly to a plane that divides the expected angle equally, and a swing arm (250) supported by the shaft provided at the swing arm as a central axis. , By sandwiching the columnar body (1) between the pair of guide wheels, the machine frame runs in the axial direction of the columnar body in cooperation with the pair of guide wheels along the surface of the columnar body. And a pinching wheel (260) for enabling it to urge the pinching wheel toward the guide wheel pair side to generate a frictional force between the guide wheel pair and the columnar body. And a biasing device (270) (claim 11).

A friction material layer may be formed on at least the surface of the driving wheel of the guide wheels (230, 240) (claim 12), and the braking device (290) of the lifting device (200) may be provided. A linear drive type direct-acting brake device can be provided (claim 13).

The turning drive device (300) includes a machine frame (3
10), a drive ring (350) having a circular outer peripheral shape, and a drive ring rotatably supported by the machine frame and circumscribing the outer periphery of the drive ring so that the drive ring can rotate around a center line. At least two support rollers (33 supporting the annulus
0) and a drive roller rotatably supported by the machine frame, circumscribing the outer periphery of the drive ring to cooperate with the support roller to support the drive ring and transmit a rotational force to the drive ring ( 340), and a forward / reverse rotation driving device (320) for driving the drive roller in forward / reverse rotation (claim 14).

In the swivel drive unit (300), the machine frame (310) of the swivel drive unit is arranged so that the position of the center of rotation of the swivel drive unit can be adjusted. ), It is configured to be slidable along the turning surface of the turning drive device in the direction of a surface that evenly divides the angle of the guide wheel pair (230, 240) looking into the axial center of the columnar body (1). (Claim 15).

The drive ring (350) may be formed of a flat plate (claim 16) or a tube having a circular cross section (claim 17). Further, a friction material layer may be formed on the surface of the drive roller (340) of the turning drive device (300).
8).

The tool support device (500) is arranged so that, on the swivel base (360) of the swivel drive device (300), the turning radius of the tool support device from the center of rotation of the swivel base is variable. The biasing device (53) is arranged so as to be slidable in at least one linear direction.
0) is urged toward the columnar body (1) (claim 20).

The sandwich type cutting device (400) is provided with a pair of cutting blades (440) driven by a linear displacement type linear motion type driving device (470) (claim 21). 440) may be driven by a linear displacement type direct drive device having an exciting coil and a plunger electromagnetically driven by the exciting coil and electromagnetically operating (claim 22). It may be driven by a heating type linear displacement type direct drive device comprising a shape-memory thermoelastic member and a telescopic link (claim 23), and the cutting operation is started in conjunction with the vertical swing. (Claim 24).

The turning drive unit (300A) further includes a frame (310A) of the turning drive unit (300A).
A drive ring (350) rotatably supported by a machine frame (310A) of the swing drive device (300A) in a plane perpendicular to the vertical direction, and the machine frame (310A) of the swing drive device (300A). ), The lifting device (2
00A) in the front of the machine frame, a guide arm (281) arranged toward the columnar body (1) in a plane perpendicular to the vertical direction.
A guide device (39) that can move integrally with the machine casing (310A) of the turning drive device (300A) using the guide as a guide.
0), a rotation fulcrum (Q) on the guide device (390), and a rotation fulcrum on an oscillating arm (250A) swingably arranged around the axle (231) of the guide wheel (233). (P) and a link (390) that pivotally connects the (P) to each other (claim 25).

The lifting device (200A) further includes a drive sprocket (236) provided on an axle (231) of the guide wheel (230) and the guide wheel (23).
Driven sprocket (2) provided on a swing arm (250A) swingably arranged around the axle (231) of (0) as a fulcrum.
65), a driven sprocket (264) provided on the wheel shaft of the holding wheel (263), a drive sprocket (236) on the axle (231), and the swing shaft (25).
0A) driven sprocket (265) on the inner peripheral side and endless power transmission means (225) contacting the driven sprocket (264) on the wheel shaft of the sandwiching wheel (263) on the outer peripheral side. (Claim 26).

The power medium such as compressed air and electricity output from the power source (100, 100A) is moved through the power medium supply device (600) to the lifting device (200), the swing drive device (300) and the sandwich cutting. A power medium such as the device (400) is supplied to the device that operates. The control unit (700) normally has its operation unit located at a fixed position on the ground or the like to form a fixed unit, and is connected to each device forming a moving unit such as the lifting device, the turning drive unit, and the pinching type cutting device. Control the supply of power medium.

The lifting device (200) includes guide wheels (230, 240) including at least one driving wheel, a sandwiching wheel (260), and a brake device (290). Cooperate with each other to sandwich the columnar body (1), and the drive wheels are driven to rotate in the forward and reverse directions, so that the lifting device moves up and down along the columnar body. And
By operating the braking device by the control device at a desired position, the lifting device is positioned at a desired height position on the columnar body.

The lifting device is mounted on a swivel base (360) which is swung by a swiveling drive device (300) operated by a power medium from a power source and swivels forward and backward in a plane perpendicular to the axis of the columnar body. The tool supporting device (500) disposed in the above is mounted, and the pinching type cutting device (400) supported by the tool supporting device is rotated around the axis of the tree trunk by the forward and reverse turning drive of the turning driving device. Make a turning motion. Then, the cutting device is positioned at the root of the branch extending from the tree trunk by stopping the turning motion of the sandwich type cutting device at a desired position by the control device. The cutting blade of the pinch-type cutting device receives the power supply to pinch the root of the branch and cut the root of the branch by shearing (claim 1).

Since the power source (100, 100A) is a portable power source, it is easy to carry and move (claim 2). When the power source is an air compressor driven by an engine, the discharge pressure control means performs a control operation, and the on-off valve opens depending on the difference between the detected value detected by the discharge pressure detection means and the set value. And the discharge pressure is controlled. When the discharge pressure is equal to or higher than a predetermined value, the linear displacement means operates, the engine speed is reduced, and the power transmission action of the clutch, for example, the centrifugal clutch is stopped. When the air pressure falls below a predetermined value, the engine is restarted, and thus compressed air having a pressure within the predetermined range is continuously supplied (claim 3).

Lifting device (200), turning drive device (30
0), the moving part including the pinching type cutting device (400),
Since the fixed part composed of the power source (100) and the operation part of the control device (700) and the like can be separated and connected in a concentrated manner, the moving part and the fixed part are divided and individually carried and moved. Further, the moving part and the fixed part can be connected to each other to remotely operate and control the moving part (claim 4).

The lifting device (200) can be carried on its back (claim 5), and in use, the pair of wheels forming each pair of guide wheels are equidistant from the axial center of the columnar body. By rotating at a position straddling the columnar body so as to be equiangularly viewed, the vehicle travels while being guided in the axial direction of the columnar body (claim 6).

The guide wheels of each pair may be arranged so as to rotate about wheel axes arranged parallel to each other in the same plane (Claim 7), or they may be axially integral with each other. May be formed so that the central portion thereof is constricted and the diameter thereof gradually increases toward both ends (Claim 8), and each axis of the pair of wheels extends in the longitudinal direction of the machine frame of the lifting device. It may be arranged so as to rotate around each axis which intersects in a V shape in a vertical plane (claim 9), and the outer peripheral portion of the cross section passing through the axis of each wheel may be Alternatively, the guide wheels may have a shape that protrudes outward in a substantially arc shape (claim 10). With these configurations, the guide wheels of each pair are configured so that when they contact the surface of the columnar body, Make sure that the columnar body is crossed over the columnar body at an equal angle from the equidistant position and surely in the axial direction of the columnar body. The lifting device can be guided rolling movement to.

The sandwiching wheel (260) is connected to the guide wheel (23
0,240) and the columnar body between them, and the biasing device (2
70) is urged toward the guide wheel to increase the frictional force between the guide wheel and the columnar body (claim 11), and a friction material layer is formed on the surface of the drive wheel of the guide wheels. (Claim 12) The stable operation of the lifting device that moves up and down in the axial direction of the columnar body is ensured, and the carrying capacity of the lifting device is also improved.

If the braking device (290) of the lifting device is a linear drive type direct-acting braking device, the braking operation functions such as actuation and deactivation of the lifting device are enhanced, and high-speed switching is possible (claim 13). ). Slewing drive device (300)
The drive ring (350) of (1) is supported by the two support rollers (330) and the drive roller (340) while surrounding the columnar body along the outer periphery of the columnar body, and the drive ring (350) of the forward and reverse rotation drive device (320). By the forward / reverse rotation drive, the drive roller drives the drive ring in the forward / reverse rotation drive around the rotation center line.
4).

Machine frame (310) of the swing drive device (300)
Is slidable with respect to the machine frame (210) of the lifting device in the direction of a surface that evenly divides the angle of the axis of the columnar body of the pair of guide wheels with respect to the axis of the columnar body of the guide wheel pair. According to the outer diameter of the tree trunk, the turning center of the turning drive unit can be substantially aligned with the axis of the tree trunk, and the pinching type cutting device (400) can be turned around the tree trunk axis. By doing so, the work of aligning the cutting blade and the branch of the sandwich type cutting device (400) can be easily performed (claim 15).

The drive ring (350) may be formed of a flat plate (claim 16) or a tube having a circular cross section (claim 17). When the drive ring is formed of a flat plate or a circular tube, the design is easy, the processing can be easily performed, and the required strength can be secured. Further, the drive roller (34) of the turning drive device (300) is
When the friction material layer is formed on the surface of (0), the frictional force of the drive roller increases and the swinging drive force of the swinging drive device increases (claim 18).

The tool support device (500) is slidable in at least one linear direction on the swivel base (360) of the swivel drive, thereby allowing the tool support device to rotate about a swivel centerline of the swivel base. The radius can be changed and adjusted, and even if the diameter of the trunk fluctuates due to the movement of the lifting device or swivel, the cutting edge of the clipper type cutting device (400) is applied to the surface of the trunk with constant pressure. It is possible to adjust for contact (claim 19). Further, when the tool supporting device is biased toward the columnar body by the biasing device (530), the cutting edge of the pinching type cutting device (400) is constantly in contact with the surface of the tree trunk, and a branch extending from the tree trunk is formed. It can be cut at its root (claim 20).

A pair of cutting blades (44) of the sandwich type cutting device (400)
0) is driven by a linear displacement type direct drive device (470) (claim 21), and has, for example, an electromagnetically actuated straight line having an exciting coil and a plunger electromagnetically driven by the exciting coil. It is driven by a displacement type direct drive type drive device (claim 22) or is driven by a heating type linear displacement type direct drive type drive device comprising a shape memory thermoelastic member and an expansion link. According to claim 23), it is possible to have a sharp cutting performance, and the cutting surface of the root of the branch becomes a dense cutting surface.

A pair of cutting blades (44) of the sandwich type cutting device (400)
0) starts the cutting operation in conjunction with the vertical swing of the pair of cutting blades (claim 24). For example, the tip ends of the pair of cutting blades are set so as to be always slightly downward, and the tip ends of the cutting blades are immediately turned upward as soon as the turning drive device (300) is driven to swivel and the cutting blades (440) come into contact with the branches. It swings to become a proper cutting posture uniquely, and at that time, the cutting operation of the pair of cutting blades is started by the operation of the switch or the automatic opening / closing valve. Also,
On the contrary, the tips of the pair of cutting blades are set so that they are always slightly upward, and the swivel drive device (300) swivels to cause the cutting blades (440) to come into contact with the branches. The tip may oscillate downward to uniquely take an appropriate cutting posture, and the cutting operation of the pair of cutting blades may be started at that time.

The turning drive device (300A) further includes a frame (310A) of the turning drive device (300A).
A drive ring (350) rotatably supported by a machine frame (310A) of the swing drive device (300A) in a plane perpendicular to the vertical direction, and the machine frame (310A) of the swing drive device (300A). ), The lifting device (2
00A) in the front of the machine frame, a guide arm (281) arranged toward the columnar body (1) in a plane perpendicular to the vertical direction.
A guide device (39) that can move integrally with the machine casing (310A) of the turning drive device (300A) using the guide as a guide.
0), a rotation fulcrum (Q) on the guide device (390), and a rotation fulcrum on an oscillating arm (250) swingably arranged about the axle (231) of the guide wheel (233). (P) is provided with a link (390) that pivotally connects the two to each other, so that the center of the swing motion of the drive ring (350) is linked to the swing of the swing arm (250). Is determined.

The lifting device (200A) further includes a drive sprocket (236) provided on the axle (231) of the guide wheel (230A), and the guide wheel (23).
0A), the driven sprocket (265) provided on the swinging arm (250A) swingably arranged about the axle (231) and the driven sprocket provided on the wheel shaft of the sandwiching wheel (263). (264) and the axle (23
1) It contacts the upper drive sprocket (236) and the driven sprocket (265) on the swing shaft (250A) on the inner peripheral side, and the outer peripheral side to the driven sprocket (264) on the wheel shaft of the sandwiching wheel (263). By providing the endless power transmission means (225) in contact with each other, the guide wheel (23) is always provided regardless of the swing of the swing arm (250A).
0A) is transmitted to the rotary shaft on the swing arm (250A).

[0041]

BEST MODE FOR CARRYING OUT THE INVENTION A power type pinching and pruning device according to a first embodiment of the present invention is configured as shown in FIGS. 1 to 13, and includes a power source 100, a lifting device 200, and a turning drive device. 300, sandwich type cutting device 400, tool support device 5
00, the power supply device 600, and the control device 700 are basic components.

As shown in FIGS. 1, 2 and 25, the lifting device 200 includes a machine frame 210, a forward / reverse rotation drive device 220 mounted on the machine frame 210, a front guide wheel 230, and a rear guide. Wheel 240 and L-shaped swing arm 25 swingably attached to the side of machine frame 210 as a fulcrum.
The gripping wheel 260 is provided at a bend of 0, and a biasing device 270 that biases the gripping wheel 260 toward the guide wheel pairs 230 and 240.

The machine frame 210 is a long side frame 21 extending in the vertical direction.
1 and a short side frame 212 formed of frame members 2121 and 1222 extending in the left-right direction as a plane frame, and a guide that stands upright on the plane of the plane frame at one front end of the long side frame 211. The guide device 280 includes an arm 281 and a guide bracket 282 fixed to the side surface of the guide arm 281. The machine frame 210 includes a front guide wheel shaft bracket 214 and a rear guide wheel shaft bracket 21.
5, a forward / reverse rotation drive device bracket 213 and a bracket 274 forming a part of the biasing device 270 are provided.

The forward / reverse rotation drive device 220 attached to the forward / reverse rotation drive device bracket 213 includes the bracket 21.
It has a drive device 221 which is attached to the machine frame 210 via 3 and can rotate in the forward and reverse directions, a drive sprocket 222 fixed to the output shaft of the drive device 221, and a drive chain 223. Further, when the rear guide wheels 240 are driven by the front guide wheels 230, a drive chain 224 is also required. As the drive device 221 capable of rotating in the forward and reverse directions,
The same thing as the air motor 320 as a forward / reverse rotation drive device described later can be used.

The front guide wheel 230 includes a wheel shaft 231 supported by a pair of bearings 232 on the front guide wheel shaft bracket 214 of the machine frame 210, a drum wheel 233 rotatably supported by the wheel shaft 231, and a wheel shaft. The driving sprocket 234 fixed to the output shaft side of the forward / reverse rotation drive device 220 on 231 and the forward / reverse rotation drive device 2 on the wheel shaft 231.
Driven sprocket 235 fixed to the output shaft side of 20
Have and. The hourglass-shaped wheel 233 is configured so that the wheel shaft 231 is made of a metal body and a rubber forming a friction material layer is attached to the surface portion thereof to increase the frictional force with the counterpart member.

The rear guide wheels 240 include a wheel shaft 241 supported by a pair of bearings 242 on a rear guide wheel shaft bracket 215 of the machine frame 210, a drum wheel 243 rotatably supported by the wheel shaft 241, and a wheel shaft. 241 and a driving sprocket 244 fixed to the driven sprocket 235. The hourglass wheel 243 has a wheel shaft 24.
1 is made of a metal body, and rubber that forms a friction material layer is attached to the surface portion of the metal body 1 to increase the frictional force with the counterpart member. This increase in the frictional force is effective as an increase in the elevational driving force of the elevating device and an increase in the frictional force for holding the stop position.

The swing arm 250 is, for example, the front guide wheel 23.
The machine frame 210 includes an arm member 251 rotatably supported at one end of a wheel shaft 231 of 0 through a bearing 253, and a base member 252 integrally formed in an L-shape orthogonal to the arm member 251. It is configured to be swingable on the vertical side surface. The gripping wheel 260 is fixed to a wheel shaft 261 that is rotatably supported by a bearing pair 262 arranged on a base member 252 of the swing arm 250, and has a cylindrical or drum-shaped outer shape.
It is formed as 63. Rubber as a friction material layer may be attached to the surface of the wheel 263 to make the wheel 263 a friction wheel.

The urging device 270 has a bracket 274 fixed to the side surface of the machine frame 210 at a position far from the fulcrum of the swing arm 250, and a rotation support member 275 at a position far from the fulcrum of the swing arm 250. Elastic member 271 supporting
And the other end of the elastic member 271 is screwed so that the tension can be adjusted.
3, and a bracket 274 screwed by a fixing nut 272 and the like.

The elevating device 200 is provided with a brake device 290. As shown in FIGS. 1 and 5, the brake device 290 is, for example, both of the rear guide wheels 24.
Drive device 29 arranged in a cross section including the axle 241 of 0
1, a guide device 292, a restoring spring 293, and a brake shoe 295 fixed to the exercise device 294.
The exercise device 294 is normally pushed toward the rear guide wheel 240 by the restoring spring 293 to brake the guide wheel 240. When the drive device 291 is energized, the exercise device 294
Guides the guide device 292 as a guide and moves backward together with the rod 296 against the restoring spring 293 from the rear guide wheel 240 to release the braking of the wheel 240 by the brake shoe 295. The drive device 291 can be a linear displacement type direct drive device including an air-operated piston and a cylinder.

As described above, the machine frame 21 of the lifting device 200
0 is guided in the axial direction of the columnar body 1 along the surface of the columnar body 1 such as a tree trunk by the front guide wheel 230 and the rear guide wheel 240, and the columnar body 1 is urged by the urging device 270.
It is possible to move up and down in the axial direction of the columnar body along the surface of the columnar body 1 in cooperation with the sandwiching wheel 260 that is urged across the column, and to stop at any position by the brake device 290.

In FIGS. 1 to 3, the turning drive device 3 is shown.
00 is a machine frame 310, a forward / reverse rotation drive device 320, a support roller 330, a drive roller 340, and a main drive ring 35.
1 and the auxiliary drive opening ring 352, and a swivel 360 mounted on the driving ring 350.
0 is composed of a main frame 311, an arm frame 312, an arm frame 313, and a guide bracket 314. The arm frame 312 and the arm frame 313 are extended from the both ends of the main frame 311 along the plane in a divergent manner. A guide bracket 314 is fixed to the side of the main frame 311 on the side of the main frame 311 opposite to the arm frames 312 and 313. The lower surface of the main frame 311 is a guide arm 281 that is a part of a guide device 280 provided at the end of the machine frame 210 of the lifting device 200.
Is slidably supported on the upper surface of the. The guide bracket 314 is a guide bar 37 fixed to the bracket 282.
Guided linearly by 0. Therefore, the machine frame 310
The load is supported by the guide device 280 and is supported so as to be linearly movable.

A supporting roller 330 is rotatably supported at the tip ends of the arm frame 312 and the arm frame 313 so as to be rotatable around an axis perpendicular to a plane along the machine frame 310. Further, a forward / reverse rotation drive device 320 is attached to the guide bracket 314 in parallel with the rotation axis of the support roller pair 330, and a drive roller 340 is provided at the tip thereof. The shafts of the support roller pair 330 and the drive roller 340 are arranged on substantially the same circumference, and rotatably support the drive ring 350 from the outer peripheral side.

As shown in FIGS. 3, 7 and 15, the drive ring 350 includes a main drive ring 351 and a sub-drive opening ring 352.
The auxiliary driving ring 352 is configured so that it can be opened with a pin 353 provided at one end of the mating portion with the main drive ring 351 as a fulcrum and can be closed by a screw 354 at the other end. . In the mating portion, the relationship between the groove and the shaft fitted in the groove, for example, the groove 3521.
And shaft 3511, grooves 3512 and 3513 and shaft 3522
The relationship with and can be used to make a separation for opening and a connection for closing.

The drive ring 350 may be formed of a hollow tube having a circular cross section, and the outer peripheral surfaces of the support roller 330 and the drive roller 340 may be arcuate or V-shaped in cross section, as shown in FIG. The drive ring 350 is formed of a flat plate, and the cross-sectional shapes of the outer peripheral surfaces of the support roller 330 and the drive roller 340 are arcuate or V-shaped as shown in FIG. 16, and the cross-sectional shape of the outer peripheral portion of the flat plate is adjusted accordingly. It may be arcuate or V-shaped. When the drive ring 350 is formed of a flat plate, it may be formed integrally with the swivel base.

Support roller pair 330, drive roller 340
The elastic member such as rubber is adhered to each surface of the core to form a friction material layer, so that the frictional force of the drive roller 340 is increased and the noise caused by the direct contact between the metals of the support roller 330 is generated. Is prevented. On the outer peripheral portion of the upper surface of the drive ring 350, a swivel 360 having a truncated circular shape is fixed.

As the forward / reverse rotation drive device 320, for example, an air motor as shown in FIG. 13 is used. FIG.
3, the air motor is an eccentric rotor 3 having blades 323 slidable in a radial direction inside a cylinder 322.
21 and includes air supply / exhaust ports 324, 325 that control air supply / exhaust with the contact point between the cylinder 322 and the eccentric rotor 321 as a boundary.

If air is taken in through the air supply / exhaust port 324, the rotor 32
For example, 1 rotates in the reverse direction and is exhausted from the air supply / exhaust port 325.
Further, if the intake air is supplied from the air supply / exhaust port 325, the rotor 321 rotates in the normal direction and is exhausted from the air supply / exhaust port 324. In this way, the swivel base 360 of the swivel drive device 300 is driven to rotate forward and backward around the center line of the drive ring 350 on the machine frame 310. The turning drive device 300 further includes a guide device 28.
A centering adjustment of 0 is possible.

In FIGS. 1 to 4 and 9, a cutting device 400 is a sandwiching type cutting device, and is a linear displacement type direct drive device 47 having a casing 410 and a piston 420.
0, a spring 430, a pair of cutting edges 440, and a bracket 460 for supporting the cutting edges. The cutting blade pair 440 is the cutting blade 44.
1 and the cutting edge 442, with the pin 450 as the fulcrum,
The brackets 460 support each other by their counterparts.
A bracket 460 is arranged on one side of the housing 410, and a linear displacement type direct drive device is arranged on the other side, so that the handle portion of the cutting blade pair 440 is arranged by the linear displacement type direct drive device. By opening and closing, the cutting function is achieved.

For example, a restoring spring 431 is provided inside the handle of the pair of cutting blades 440, and is supported so that the displacement of the handle with respect to the pin 450 as a fulcrum can be restored by itself.
If the contact between the piston 420 and the handle is the contact between the slope and the swing arm, the reciprocating linear motion of the piston 420 is converted into the swing motion of the handle. The movement of the piston 420 with the seal ring 421 is performed by using the housing 410 as a guide and airtight holding member, and arranging a pressure air introduction air passage 411 on one side of the piston 420 and a restoring spring 432 on the other side. It is possible by supplying and discharging. As described above, the cutting device 40
In No. 0, the cutting edge can be kept open by the restoring spring, and the cutting function can be achieved by using compressed air as a power source.

1 to 4, the tool support device 5 is shown.
00 is a main body 510, a bearing 511, and a tool holding wheel 5
20, the support pin 521, the swing limit stopper 550, the biasing spring 530, and the rotation stopper 540, and the bearing 51.
1 through the swivel base 360, and by the urging spring 530 and the stop member 540 as the urging device, the axis of the tool holding wheel 520 is moved toward the turning center line in a predetermined rotation angle range. It is held so as to be biased. The cutting device 400 is held by the tool holding wheel 520 so as to be swingable with respect to the turning surface.

As described above, the cutting device 400 is positioned in the axial direction and the circumferential direction of the columnar body 1 by the combined movement of the lifting device 200 and the turning drive device 300, and the main body of the tool supporting device 500. Due to the rotational force around the axis of 510, the pair of cutting edges 440 of the cutting device 400 causes the columnar body 1 to move.
Is held in contact with the surface of the. As will be described later, the pruning device controls the power supply to the elevating device 200, the turning drive device 300, and the cutting device 400 so that the cutting blade of the cutting device 400 in the normally open state is an arbitrary trunk of the tree as the columnar body 1. The root of the branch can be cut by shearing by aligning with the branch 2 in the position.

By the way, as shown in FIG. 8, the guide wheels 230 and 240 form an angle (2
Since α = 180 ° −2θ) is constant, when the diameter of the columnar body 1 changes (2R ₂ → 2R ₁ ), the turning center of the turning drive device 300 changes. By operating the guide device 280 to move the guide wheels 230 and 240 forward and backward with respect to the columnar body 1 (for example, J ₂ → J ₁ ), if the approximate center is corrected from the ground, the height direction It can handle changes in diameter.

In FIGS. 10 and 11, the power source 10
0 has a machine frame 110, and a compressor 140, an oil separator 150, and an air reservoir chamber 160 are mounted on a frame 111 of the machine frame 110.
Are connected and arranged by the piping device 190.
The compressor 140 is driven by the engine 120 via the power transmission joint 130, and includes an oil return control device 170 and a compressed air pressure control device 180. The compressor 140 is surrounded by the cover 112 and can be carried by using the carrying lever 113. As the compressor 140,
For example, a scroll compressor using a spiral body for the piston member is suitable.

The piping device 190 is connected from the suction side of the compressor through the filter 195, the suction pipe 191, the discharge pipe 192, the check valve 193, etc., to the air reservoir 160, and reaches the joint 194. When the compressor is operated, the air dedusted by the filter 195 and the return oil are sucked into the compression chamber, and as a result, the air whose temperature and pressure have risen is discharged. The oil in the discharge air is separated in the oil separator 150 and returned to the suction side via the oil return control device 170.

The check valve 193 is provided when the compressor stops.
It is provided to function via a differential pressure valve that prevents oil from blowing out to the suction side. The oil return control device 170, the discharge pressure and the suction pressure as differential pressures of the expansion device 171, the cooling coil 173, and the differential pressure type on-off valve 172, which are provided in the communication passage 176 between the outlet of the oil separator 150 and the suction pipe 191. When the compressor is operating and the discharge pressure is high, the differential pressure type on-off valve 172 opens the passage 176, and the oil of the oil separator 150 moves to the suction pressure side. Will be returned.

When the compressor stops, valve 172 closes, stopping the return of oil. The amount of oil returned is adjusted by the diaphragm 171. Oil cooling is facilitated by the coil 173. The engine 120 is preferably a small and lightweight recoil start type two-cycle engine.

The power transmission joint 130 is used for the engine 120.
It has a centrifugal clutch 131, a sprocket pair 132 and a chain 133 provided on the output shaft of the. When the recoil type starter or the like is operated to manually start the engine, the compressor 140 starts operating and discharges compressed air.

The pressure control device 180 includes a pressure type switching valve 18
1. Pneumatic linear motion motor 182 and actuation wire 18
3 and the pilot pressure of the pressure switching valve 181 exceeds the set value, the pressure is introduced into the pneumatic linear motion motor 182 and the actuation wire 183 is pulled. Actuation wire 183
Reduces the opening of the throttle valve of the engine 120 and switches the engine to idling mode. Then, the operation of the centrifugal clutch 131 is discontinued and the discharge of compressed air from the compressor is stopped.

In FIG. 12, the power supply device 600 is
A spring offset type two-position switching valve 610 for supplying the power source of the cutting device and a spring center type three-position switching valve 620 for supplying the power source of the swing drive device.
A spring offset type pressure type two-position switching valve 630 for supplying the power source of the braking device 290, a spring center type pressure type three-position switching valve 640 for supplying the power source of the lifting device, and the braking device 290. Valve 650 for interlocking with the start of movement of the lifting device, the pressure distribution manifold 660, the joints 670 and 690, and the flexible pressure supply pipe 680, and the pipes 611, 612, 621 connecting the switching valve and the operating device. , 622, 631, 64
1 and 642, and pressure supply pipes 661, 662, 6 for supplying pressure from the pressure distribution manifold 660 to each switching valve.
63 and 664. The supply of the power medium from the pressure source 100 to the pressure distribution manifold 660 is performed by the joint 6
Concentrated by flexible tube 680 through 70,690.

The control signal supply device 700 includes a self-return type push-hook position switching valve 710 for switching the cutting operation of the cutting device,
Neutral position holding type 3 position switching valve 720 for turning direction selection switching of the turning device, neutral position holding type 3 position switching valve 730 for moving direction selection switching of the lifting device, and signal pipes 711, 7
Signal line bundle 7 consisting of 21, 722, 731 and 732.
60, signal pipe connectors 740 and 750 that intensively connect the signal line bundle 760, pressure supply pipe 780, and the like, and the power for the operation uses the power of the power source 100.

Flexible piping can be applied to the signal wire bundle 760. The signal sent through the signal wire bundle 760 is supplied to the corresponding switching valve as a pilot pressure signal for switching the operation of each switching valve. Depending on the position of each switching valve 710 to 730, the power supply device 60
The valve positions of the switching valves 610 to 640 of 0 are switched,
It is possible to switch the supply and discharge of power and the supply direction, and switch the movement direction of the reciprocating motor and the rotating direction of the rotary motor.

As is clear from the above, it is possible to prun the branches at an arbitrary height from the ground. In addition, the power source 10
0, the fixed parts on the ground such as the control device 700 and the moving parts such as the lifting device, the turning device, and the cutting device are centrally piped for both the power medium supply system and the signal transmission system, and the work of separation, coupling, and connection is performed. It becomes extremely easy and can be performed efficiently. Further, since the lifting device makes a linear motion, problems such as winding of the power source supply pipe and the signal tube bundle do not occur.

Another embodiment will be described with reference to FIG. This is the same as the first embodiment except that the front guide wheel 230 and the rear guide wheel 240 of the lifting device 200 are arranged in a V-shaped cross shaft around the column 1 and driven by bevel gears. Basically the same structure. The names of the parts corresponding to the symbols shown are as follows. 210A is a machine frame, 214A is a front guide wheel shaft bracket, 2141 is a sub wheel shaft, 2142 is a main wheel shaft, 2143 is a sub wheel shaft,

215A is a front guide wheel axle bracket, 2
Reference numeral 151 is for a sub wheel shaft, 2152 is a main wheel shaft, 2153 is a sub wheel shaft,

220A is a forward / reverse rotation driving device, 221 is a driving device, 2221 is a bevel gear pair, 2231 is an output shaft, 22
32 is a branch bevel gear pair, 2233 is a front wheel drive bevel gear,
2361 is a front wheel drive shaft, 2362 is a front main wheel shaft drive bevel gear pair, 2345 is a main wheel shaft drive bevel gear pair, 234.
1 is a sub-wheel shaft driving bevel gear pair, 2342 is a sub-wheel driving bevel gear pair, 2234 is a rear wheel driving bevel gear, 2445 is a main wheel shaft driving bevel gear, 2421 is a sub-wheel shaft driving bevel gear pair, 2
422 is a sub-wheel shaft drive bevel gear pair,

230A is a front guide wheel, 231A is a wheel shaft, 2311 is a sub wheel shaft, 2312 is a main wheel shaft, and 23.
13 is a sub wheel shaft, 232A is a bearing pair, 2321 is a sub wheel shaft bearing, 2322 is a main wheel shaft bearing, 2323 is a sub wheel shaft bearing,

233A is a wheel, 2331 is a 1-side wheel, 2
40A is a rear guide wheel, 241 is a wheel shaft, 2411 is a sub-wheel shaft, 2412 is a main wheel shaft, 2413 is a sub-wheel shaft,

242A is a bearing pair, 2421 is a sub-wheel shaft bearing pair, 2422 is a main wheel shaft bearing pair, 2423 is a sub-wheel shaft bearing pair, 243A is a wheel, 2431 is a 1-side wheel, 243.
Reference numeral 2 indicates the other wheel, and 290X indicates a brake.

From the drive to the final wheel pair 231A, 24
It is an essential requirement to drive 1A to rotate in the same direction at the same time by a single drive device 221. It is obvious that the above-mentioned object can be achieved by using the illustrated beveled tooth pair series by sequentially searching the rotation direction. The brake device 290X may be appropriately arranged. As a result, this lifting device has exactly the same function as that described in the first embodiment.

Next, still another embodiment will be described with reference to FIG. The parts corresponding to those in FIG. 400X is a cutting device, 410 is a box,
411 is an air passage, 421X is a valve, 413X is a spring, 4
14X plunger, 480X shows lever.

A spring 413X, a valve 412X, a plunger 414X, and a lever 480X are provided in the middle of the air passage 411 of the casing 410. The displacement regulation mechanism of the spring 413X, the pressing force of the spring 413X, and the mutual displacement transmission function between the valve and the lever of the plunger 414X are interlocked with each other to normally close the air passage 411 by the valve 412X, and the lever 480X causes the spring 4 to move.
Air passage 411 is opened when acting against 13X.
When the lever 480X is pushed by an external force, the air passage 411
Opens and performs a cutting action.

That is, the elevation device is operated to adjust the height, and then the turning drive device is operated. The cutting blade of the cutting device is normally in the open state and the standby state in which it is inclined downward. When the cutting drive of the cutting device pinches a branch when the turning drive device is swung, if the height is adjusted so that the cutting device swings upward, it will be linked to the upward swing of the cutting device, that is, the alignment work. Then, a disconnection command can be issued.

Next, an embodiment using a power source that outputs electric power will be described. In FIG. 21, 100A is a power source, 120 is an engine, 140A is a generator, and 141A.
Is a stator winding, 142A is an armature winding, 143A is a diode bridge, 150A is a smoothing capacitor, 160A
Indicates a voltage dividing resistance.

The output shaft of the engine 120 is a generator 140A.
Is directly connected to the armature shaft, which is the rotor of the
It rotates within the 42A stator winding 141A. Stator winding 1
41A is generally a three-phase star winding. The voltage induced in the stator winding 141A is full-wave rectified by the three-phase diode bridge 143A and the voltage is smoothed to a considerable extent, but has a large pulsation. This pulsating voltage is smoothed by the smoothing capacitor 150A and a DC voltage is output.
On the other hand, the output voltage is divided by the voltage dividing resistor 160A and supplied to the armature winding 142A through the slip ring to magnetize the armature in a certain direction to form a magnetic pole. The rotational movement of the magnetic pole changes the number of magnetic flux linkages of the stator winding 141A, so that electromotive force is generated by the electromagnetic induction action as described above.

The elevating device 200A comprises a forward / reverse rotation drive device 22.
No. 0 pneumatic motor 221 shunt winding type DC motor 221A
Replace with. The rotation direction of the DC motor 221A can be changed by switching the direction of the armature current. This can be easily done using a relay circuit. This easily achieves the same purpose as that of the above-mentioned embodiment.

In the brake device 290A, if the pneumatic linear drive device of the drive device 291 is replaced with a drive device 291A in which an exciting coil and a plunger are replaced, the same purpose as in the above embodiment can be easily achieved. This embodiment is shown in FIG. 291A is an electromagnetic drive device (linear type), 2911
Is a magnetic material, 2912 is an iron core, 2913 is a winding wire, 2921.
Is a support, 292 is a guide device, 293 is a restoring spring, 29
Reference numeral 4 denotes an exercise device and 295 denotes a brake shoe device.

When the winding 2913 is excited to magnetize the iron core 2912, the magnetic conductor 2911 is attracted. Magnetic conductor 2
911 is an exercise device 294 against the force of the restoring spring 293.
Is sucked, and the brake action of the brake shoe 295 is released. In the swivel device 300A, if the forward / reverse rotation drive device 320 is replaced with a shunt winding type DC electric motor 320A, the same purpose as in the hydraulic embodiment can be easily achieved.

If the cutting device 400A is replaced with a driving device 470A in which the linear driving device 470 is replaced with an exciting coil and a plunger, the same object as that of the hydraulic embodiment can be easily achieved. This embodiment is shown in FIG. The names of the parts corresponding to the reference numerals in FIG. 19 are as follows. 400A
Is an electromagnetic cutting device, 410A is a casing, 440A is a pair of cutting blades, 470A is an electromagnetic driving device (linear type), 471 is an iron core, 472 is a magnetic body (plunger), and 473 is an excitation winding. .

Even if the cutting device 400B replaces the linear driving device 470 with a heating type linear driving device 470B, the same object as that of the hydraulic embodiment can be easily achieved. This embodiment is shown in FIG. In FIG. 20, the names of the parts corresponding to the reference numbers are as follows. 400B is a heating type cutting device, 410B is a housing, 430B is a restoring spring, 440B is a pair of cutting blades, 441b is one cutting blade, 442B is the other cutting blade, 450B is a support pin, 460B is a bracket,

Reference numeral 470B is a linear drive device, 471B is a telescopic link, 472B is a lever, 473B is a shape memory alloy spring, and 474B is a conducting wire.

A restoring spring 430B is attached to the handle portion of the pair of cutting blades 440B.
Is provided to keep the handle normally open. Linear drive device 4
70B is formed as follows. A telescopic link 471B is provided in which both ends of the handle of the pair of cutting blades 440B are open side rotation fulcrums and the other end is an intersection fulcrum. A lever 472B that is swingable about the intersection fulcrum of the expansion link 471B is provided, and shape memory alloy springs 473B having one end fixed to the lever 472B and the other end fixed to the housing 410B are provided on both sides of the fulcrum of the leverage 472B.

The shape memory alloy spring 473B is a casing 410.
B and lever 472B are electrically insulated from each other as appropriate, and the conducting wire 4
Enable electricity at 74B. Shape memory alloy spring 473B
Is molded in a time-shrinked state at high temperature. In this way, the shape memory alloy spring 473B is stretched by the force of the restoring spring 430B in the normal non-energized state, and the pair of cutting edges 44 is formed.
The 0B cutting edge remains open. This is FIG. 20 (a).
When the shape memory alloy spring 473B is heated by, for example, energizing, it has a property of returning to a shape in a heat state, and thus contracts.

When the shape memory alloy spring 473B contracts, the expansion link 471B contracts, and the cutting edge of the cutting edge pair 440B closes. This is FIG. 20 (b). In this way, the linear drive device 4 is driven by the energized state of the shape memory alloy spring 473B.
The expansion / contraction action of 70B is converted into the opening / closing action of the pair of cutting blades 440B to perform the cutting action. Shape memory alloy spring 473B
After the shape setting of No. 2 is molded in the expanded state in the heat state, it is molded in the contracted state at the normal temperature and the other end is fixed to the casing 410B, the same effect is brought about. Power supply and control to these devices are performed by the power supply device 600A shown in FIG.
The control device 700B shown in FIG.

FIG. 22 shows a cutting device 400A or 400.
B, a turning drive device 300A, a lifting device 200A, and the like, shows a power supply device of drive elements for driving a motion unit. In FIG. 22, the names of the parts corresponding to the reference numerals are as follows.
470A and 470B are drive devices (for cutting devices), 320
A is a forward / reverse drive device (for a swing drive device), 221A is a forward / reverse drive device (for a lift drive device), 290A is a drive device (for a brake device),

600A is a power supply device CR400 is an electromagnetic contactor (for driving a cutting device), SS40
0 is a contact point, CR320p is an electromagnetic contactor (for forward rotation drive of the swing drive device), SS320p is a contact, CR320n is an electromagnetic contactor (for reverse rotation drive of the swing drive device), SS320n
Is a contact point, CR220p is an electromagnetic contactor (for normal rotation driving of a lifting drive device), SS220p is a contact, CR220n is an electromagnetic contactor (for reverse rotation driving of a lifting drive device), SS220n is a contact point,

760A is a signal line bundle, 400p is a drive signal (for cutting device drive), 300p is a drive signal (for normal drive of the swing drive device), 300n is a drive signal (for normal drive of the swing drive device), 200p Is a drive signal (for normal rotation drive of the elevation drive device), 200n is a drive signal (for normal rotation drive of the elevation drive device),

The power supply device 700A, which is a moving part, is
The above-mentioned power supply 100A placed on the ground and the control device 6 described later.
Power and control signals are sent via 00A. The driving device 470A or 470B for the cutting device is the electromagnetic contact device CR.
The energization state is controlled by opening / closing the contact SS400 based on the opening / closing operation of 400. Drive device 320A for turning drive device
Is a DC motor, and the contact SS of the electromagnetic contactor CR320p and its contact SS320p and the electromagnetic contactor CR320n
At 320n, the energization direction of the field winding is switched to switch the rotation direction of the electric motor and the turning direction. The same applies to the lift drive device drive device 220A and the brake device 290A. The control signal is supplied by the signal line bundle 760A, the description of which is as follows.

In FIG. 23, the names of the parts corresponding to the reference numerals are as follows. 100A is a power supply, 680A is a power line bundle, 700A is a control device, 760A is a signal line bundle, S
W400 is a disconnection switch, SW300 is a swing changeover switch, SW200 is an up / down changeover switch, C400 is an electromagnetic contactor (for driving the cutting device), C300p is an electromagnetic contactor (for forward rotation drive of the swinging drive device), and C300n is an electromagnetic contactor. C200p is an electromagnetic contactor (for forward / reverse drive of the elevation drive device), and C200n is an electromagnetic contactor (for reverse drive of the elevation drive device).

760A is a signal line bundle, 400p is a drive signal (for cutting device drive), 300p is a drive signal (for normal rotation drive of the swing drive device), 300n is a drive signal (for normal rotation drive of the swing drive device), 200p Indicates a drive signal (for normal rotation drive of the elevation drive device), and 200n indicates a drive signal (for normal rotation drive of the elevation drive device).

The disconnection switch SW400 is a normally open, self-resetting push-button switch. Turning switch SW300
Is a 3-position changeover switch of an independent 2-circuit changeover type which cuts off all circuits at the neutral position. This is a switch that has the function of holding the selected position by itself. The up-and-down changeover switch 200 is also a three-position changeover switch having the same function as the turning changeover switch SW400. Disconnect switch S
When W400 is pressed, the electromagnetic contactor C400 is excited and the contact S400 is closed. This is transmitted to the exercise unit via the signal line 400P.

When the turning switch SW300 is turned to one side, the electromagnetic contactor C300p is excited and the contact S300p is closed. When turning switch SW300 is turned to the other side, electromagnetic contactor C300n is excited and contact S300n is closed. These are transmitted to the exercise unit via signal lines 300p and 300n. The same applies to the up / down changeover switch SW200.

26 to 30, FIGS. 1 to 3 are shown.
An embodiment different from the embodiment shown in FIG. 26 to 30, the lifting device 200
A differs from the lifting device 200 shown in FIGS. 1 to 3 in the following points. (1) The forward / reverse rotation drive device 220A is configured by adding a holding wheel 260A driving chain 225 for driving the holding wheel 260A to the forward / reverse rotation drive device 220. (2) The front guide wheel 230A is the sprocket 2 for driving the holding wheel 260A driving sprocket 264.
It is configured by adding 36. (3) The swing arm 250A is the arm member 251 of the swing arm 250.
In addition, an insertion hole for one pin 393 of the link device 390 is provided. (4) The sandwiching wheel 260A is configured by adding a drive sprocket 264, an idle sprocket 265, and a bracket 266 to the sandwiching wheel 260. (5) The guide frame 281 includes the guide frame 2811 and the guide frame 2 without the bracket 282 and the guide device 280.
And 812.

On the arm member 251 of the swing arm 250, an idle sprocket 265 is provided at a position in the extension direction of the wheel shaft of the sandwiching wheel 260A as viewed from the front guide wheel 230 so as to be supported by a bearing 266. In this way, the lifting device 200A has the axle 2 of the guide wheel 230A.
31 and a driven sprocket 265 provided on a swinging arm 250A that is swingably arranged around an axle 231 of a guide wheel 230A as a fulcrum.
The driven sprocket 264 provided on the wheel shaft of the sandwiching wheel 263, and the driven sprocket 236 on the axle 231 and the driven sprocket 265 on the swing shaft 250A are in contact with each other on the inner peripheral side, and the driven sprocket 264 on the wheel shaft of the sandwiching wheel 263 is And an endless power transmission means 225 that is in contact with the outer peripheral side of the guide wheel 230, which is always a swing fulcrum of the swing arm 250A regardless of swing of the swing arm 250A.
1 and the arbitrary axis of rotation on the swing arm 250A are invariant, the guide wheel 230 is always used as the drive wheel regardless of the swing of the swing arm 250A. It is configured to transmit the rotation of 230 to the rotation shaft on the swing arm 250A.

The drive chain 225 is the drive sprocket 2
36 and idle sprocket 265 to the inner peripheral side,
Since the drive sprocket 264 is stretched around the outer peripheral side, the drive sprocket 264 is reversed with respect to the drive sprocket 236. Since the guide wheels 230A and 240 and the sandwiching wheel 260A face each other across the columnar body 1, they are both driven in the same direction with respect to the columnar body 1.

The swivel drive unit 300A includes the swivel drive unit 3A.
It differs from 00 in the following points. (1) As shown in FIGS. 26 and 28, the guide device does not include the guide bracket 314 and the guide lever 370, and instead of the guide by the guide lever 370, guide frames 2811 and 281 are provided.
It is configured as a guide device 380 having 2 as a guide. (2) A machine frame 310A is used instead of the machine frame 310, and main frames 311A instead of the main frame 311 are parallel to each other and have different lengths 3111 and 3113, and these frames 3111.
And a frame 3112 connecting the ends of 3113. (3) As shown in FIG. 27, a link device 390 is provided to interlock the swing arm 250 and the machine frame 310. As shown in FIG. 28, arm frames 312 and 313 are provided in the main frame 311A, and the support roller pair 330 is provided on the plane formed by the machine frame 210 at the tip ends of the arm frames 312 and 313. It is rotatably supported around an axis perpendicular to.

Similar to the case of the swing drive device 300,
The drive roller 34 is attached to the machine frame 310A via a bracket.
0, the roller 330 and the drive roller 340 are provided.
Rotatably driven while circumscribing and supporting the drive ring 350.
The guide device 380 includes a bracket 381 and an upper roller 382.
And lower rollers 383 are provided on both sides of the main frame 311A in the ascending / descending direction in consideration of weight balance.
11 and 2812 are sandwiched between the upper and lower sides, respectively, and are guided to roll. The guide direction of the guide device 380 is a direction perpendicular to the ascending / descending direction and perpendicular to the surface formed by the machine frame 210, that is, the length direction of the guide frames 2811 and 2813. The link device 390 includes a link 391 and pins 392 and 393. One pin 393 is fixed to a rotation fulcrum P on the same axis as the bearing 253 provided on the arm member 251 of the swing arm 250, and the other pin 392 is It is fixed to the rotation fulcrum Q of the bracket 381 of one guide device 380.

As shown in FIG. 30, the rotation fulcrum Q
Passes through the center of the drive ring 350, and passes through the center O ₁ of the guide wheels 233 are selected to a line perpendicular to the straight line passing through the center O ₃ of the center O ₁ and the guide wheels 243 of the guide wheels 233. The pins 392 and 393 are pivotally supported pins of the link 391, and the link 391 is rotatably supported by the pins 392 and 393.

In this way, the swing drive device 300A
Is a machine frame 310A of the swivel drive apparatus 300A, a drive ring 350 supported by the machine frame 310A of the swivel drive apparatus 300A so as to be able to swivel in a plane perpendicular to the vertical direction, and a machine frame 310A of the swivel drive apparatus 300A. Is fixed to the front of the machine frame of the lifting device 200A and is integrated with the machine frame 310A of the turning drive device 300 using the guide arm 281 arranged toward the columnar body 1 in a plane perpendicular to the lifting direction as a guide. Between the movable guide device 390 and the rotation fulcrum P on the swing arm 250A that is swingably arranged about the rotation fulcrum Q on the guide device 390 and the axle 231 of the guide wheel 233. And a link 390 pivotally connected to the swing arm 2
The center of the turning motion of the drive ring 350 is determined in association with the swing of 50A.

The center of the bearing 253, that is, the rotation fulcrum P is
The center O ₁ of the front guide wheel 233 and the gripping wheel 260A
It is provided at a position at a distance of ¼ from the axis center O _{1 with} respect to the distance L from the axis center O _{2 of} . On the other hand, the rotation center Q on the bracket 381 is the center 0 _{1 of the} guide wheel 233.
You will be selected on a line that passes through and is perpendicular to the vertical direction. The length Lpq of the link is predetermined so as to satisfy the minimum diameter Dmini of the columnar body 1 within the range of use, for example. Of course, the length of the link should be the maximum diameter Dma of the columnar body within the range of use.
You may choose from x.

Next, automatic centering will be described with reference to FIG. Guide wheels 233, 243 and gripping wheels 26
The diameters of the three columnar bodies 1 in contact with each other are equal to D.
At this time, a foot of a perpendicular line from the center point O ₂ to the axis CL of the columnar body 1 is H, and an intersection of the straight line connecting the center points O ₁ and O ₂ and the axis CL is R. At this time, 0 ₁ Q = O ₂ H ∠O ₂ RH = ∠O ₁ RQ ∴O ₁ R = O ₂ R Therefore, the midpoint R of O ₁ O ₂ always passes through the axis CL. If the midpoint of O ₁ R is P, then P is a right triangle O ₁ R
Since it is the midpoint of the hypotenuse of Q, the following relationship holds. O ₁ P = PR = PQ = L / 4 (= constant) That is, since the point Q is guided on a line perpendicular to O ₁ O ₂ , it is on the same line and on the axis CL, and P
Since the length of Q is invariable, the point Q is always on the axis CL if the points P and Q are linked with each other as pivot points. That is, the swing drive device 300A includes the link 390.
Will automatically perform centering.

[0111]

As described in detail above, according to the power type pinching type pruning device of the present invention, the following effects can be obtained. (1) A finely cut surface is obtained by the power type pruning device. This prevents rain dew from accumulating on the surface of the tree after pruning and prevents corrosion from progressing from the cut surface. (2) Since the back of the cutting blade can be set in close contact with the surface of the tree, the branches are cut from the root in a nearly complete state, and there is almost no uncut branch, which is suitable for name tree production. (3) Since the moving parts such as the lifting device, the turning device, and the cutting device, the power source device, and the control device can be centrally connected, the pruning device can achieve both easy transportation by divided transportation and easy setup. As a result, it is possible to provide a device that is easy to carry to the forestry workshop and easy for the elderly to handle. (4) Especially, since it is concentrated on one side of the machine frame, such as the guide wheel, the sandwiching wheel, and the turning device, it can be carried on the back, and the transportability in the work environment under the above circumstances is improved. (5) To obtain a pruning device with a portable engine as a driving source, which is easy to transport and has a large cutting ability. When compressed air is used as the power source, it becomes a power source with a particularly large cutting capacity per transported weight, and a high-performance pruning device is obtained. (6) In particular, the rocking type sandwiching wheel type, which is arranged opposite to the guide wheels, makes it easy to install the lifting device on the trunk. The sliding type position adjusting mechanism of the turning device facilitates centering and adjustment, and provides a pruning device that is easy to handle. (7) Since the power sources for raising and lowering drive, turning drive, and cutting drive are independent power sources, the cutting blade can be aligned with a predetermined branch, and as with the conventional lifting motion that ignores the branch position, The repositioning required in the case of a misalignment between the branch position and the cutting blade of the cutting device with a swiveling or spiraling pruning device is eliminated with the device according to the invention. (8) Since the center of the swivel drive is determined in conjunction with the swing arm, special work for centering the swivel drive when attaching the lifting device to the columnar body is unnecessary. Further, even when the thickness of the columnar body is changed during the ascending / descending process, the center of the turning drive device is always automatically held. Along with that, the cutting device can perform position correction in the radial direction, so that the cutting blade comes into contact with the surface of the columnar body to operate,
Normal cutting performance can be maintained at all times (claim 2
5). (9) All the guide wheels and the sandwiching wheels can be driven in conjunction with each other, which can improve the weight carrying performance and the lifting speed of the lifting device, thus shortening the cutting work time and increasing the efficiency. It is possible to perform various cutting operations (claim 26).

[Brief description of drawings]

FIG. 1 is a front view showing a power-type sandwich type pruning device according to an embodiment of the present invention.

2 is a side view of the device of FIG. 1. FIG.

FIG. 3 is a top view of FIG.

FIG. 4 is an enlarged cross-sectional view of part A in FIG.

5 is an enlarged cross-sectional view taken along the line BB of FIG.

FIG. 6 is a sectional view taken along the line CC of FIG. 5;

7A and 7B are configuration explanatory views of a swivel base and an annular member according to the first embodiment of the present invention, FIG. 7A is an explanatory view of attachment of a main annular member and a swivel base, and FIG. 7B is a sub annular member. It is a structure explanatory view.

FIG. 8 is an explanatory diagram of centering adjustment of the turning device.

FIG. 9 is a configuration and operation explanatory diagram of the pneumatic cutting device according to the first embodiment of the present invention, in which (a) is a pulling state diagram,
(b) is a push state diagram.

FIG. 10 is a perspective view of a main part of a compressed air power source according to the first embodiment of the present invention.

FIG. 11 is an explanatory diagram of an output system of the compressed air power source according to the first embodiment of the present invention.

FIG. 12 is an explanatory diagram of a compressed air type power supply and control system according to the first embodiment of the present invention.

FIG. 13 is a cross-sectional view of a main part of the forward / reverse drive device according to the first embodiment of the present invention.

FIG. 14 is a perspective view illustrating a main part of an elevating device according to another embodiment of the present invention.

FIG. 15 is a perspective view of a main part of a turning device according to yet another embodiment of the present invention.

16 is an explanatory diagram of a roller of the turning device according to the embodiment of FIG. 15.

FIG. 17 is a main-portion cross-sectional view of a cutting device according to yet another embodiment of the present invention.

FIG. 18 is an explanatory cross-sectional view of a main part of a brake device according to an electric embodiment of the present invention.

FIG. 19 is a cross-sectional view of essential parts of a cutting device according to an electric embodiment of the present invention.

FIG. 20 is a cross-sectional view of essential parts of a cutting device according to an electric embodiment of the present invention.

FIG. 21 is a configuration explanatory view of a power generation source according to the electric embodiment of the present invention.

FIG. 22 is an explanatory diagram of a power supply device according to the electric embodiment of the present invention.

[Fig. 23] Fig. 23 is an explanatory diagram of a control device according to the electric embodiment of the present invention.

FIG. 24 is an explanatory view of a branch cutting surface by the device of the present invention.

[Fig. 25] Fig. 25 is an explanatory view showing a state where the device of the present invention is carried on the back.

FIG. 26 is a plan view, corresponding to FIG. 1, of a power-operated pinching type pruning device according to still another embodiment of the present invention.

27 is a side view of the power-operated pinching pruning device of FIG. 26, corresponding to FIG. 2.

28 is a top view corresponding to FIG. 3, of the power-operated pinching pruning device of FIG. 26.

29 is an explanatory diagram of a power transmission unit of the power-operated pinching pruning device of FIG. 26.

30 is an operation explanatory view of the automatic centering device of the power-operated pinching type pruning device of FIG. 26.

[Explanation of symbols]

100 power source 100A power source (power source) 110 machine frame 120 engine 130 power transmission joint 140 compressor 140A generator 150 oil separator 150A smoothing condenser 160 air reservoir 160A partial pressure resistance 170 oil return controller 180 pressure controller 190 piping Device 200, 200A Lifting device 200n, 200p Drive signal (for normal rotation driving of lifting drive device) 210, 210A Machine frame 211 Long side frame 212 Short side frame 2111 Short side frame 2112 Short side frame 213 Forward / reverse rotation drive device bracket 214 Front guide wheel axle bracket 215 Rear guide wheel axle bracket 220, 220A Forward / reverse rotation drive device 221 Drive device 222 Drive sprocket 223 Drive chain (for front wheel drive) 224 Drive chain (for rear wheel drive) 225 Drive chain (pinching wheel) 230, 230A front guide wheel 231 wheel shaft 232 bearing pair 233 drum wheel 234 driven sprocket (for driving wheel shaft 231) 235 driven sprocket (for driving wheel shaft 241) 236 drive sprocket 240, 240A rear guide wheel 250, 250A Swing arm 251 Arm member 252 Stand member 253 Pin hole 260, 260A Clamping wheel 261 Wheel shaft 262 Bearing pair 263 Clamping wheel 264 Drive sprocket 265 Idle sprocket 266 Biasing device 280 Guide device 281 Guide arm 2811 Guide arm 2812 Guide arm 2812 282 Bracket 290 Brake device 290A Drive device (for brake device) 290X Brake device 291A Electromagnetic drive device (linear type) 292 Guide device 293 Restoration spring 294 Exercise device 295 Brake shoe device 300 Swing drive device 310 Machine frame 311A Main frame 3111 Main frame 3112 Main frame 3113 Main frame 312 Arm frame 313 Arm frame 320 Forward / reverse rotation drive device 330 Support roller 340 Drive roller 350 Drive ring 360 Swivel base 370 Guide lever 380 Guide device 381 Bracket 382 Upper roller 383 Lower roller 390 Link device 391 Link 392 pin 393 pin 400 Cutting device 400A Electromagnetic cutting device 400B Heating cutting device 400p Drive signal (for cutting device driving) 400X Cutting device 410,410A, 410B Case 420 Piston 430, 430B Restoring spring 440, 440A, 440B Cutting blade pair 450 Support pin 460 Bracket 470, 470B Linear drive 470A, 470B Drive (cutting) Device) 470A Electromagnetic drive device (linear type) 480X Lever 500 Tool support device 510 Main body 520 Tool holding ring 530 Bias spring 540 Rotation stop 550 Swing stop 560 Actuation bracket 600 600A Power supply device 610 Spring offset type pressure type 2 Position switching valve 620 Spring center type force type 3 position switching valve 630 Spring offset type pressure type 2 position switching valve 640 Spring center type force type 3 position switching valve 650 Sequence valve 660 Pressure distribution manifold 670 Joint 680 Flexible pressure supply pipe 680A Power line bundle 690 Joint 700 Control signal supply device 700A Control signal 710 Push button type two position switching valve 720 Three position switching valve 730 Three position switching valve 740 Signal piping connector 750 Signal piping connector 760 Flexible signal tube bundle 760A Signal line bundle 770 Joint Hand 780 Pressure supply pipe 1000 Pruning device 2221 Bevel gear pair 2231 Output shaft 2232 Branch bevel gear pair 2233 Front wheel drive bevel gear 2234 Rear wheel drive bevel gear 2341 Sub wheel shaft drive bevel gear pair 2342 Sub wheel shaft drive bevel gear pair 2345 Main Wheel shaft drive bevel gear 2361 Front wheel drive shaft 2362 Front main wheel shaft drive bevel gear pair 2421 Sub wheel shaft drive bevel gear pair 2422 Sub wheel shaft drive bevel gear pair 2445 Main wheel shaft drive bevel gear 2462 Rear wheel drive shaft 2462 Rear main Wheel shaft drive Bevel gear pair C200n Electromagnetic contactor (for reverse drive of lifting drive) C200p Electromagnetic contactor (for forward drive of lift drive) C300n Electromagnetic contactor (for reverse drive of swing drive) C300p Electromagnetic contactor (For forward rotation drive of turning drive) C400 Electromagnetic contactor (For cutting device drive) CR220n Electromagnetic contactor (for reverse drive of elevator drive) SS220n Contact CR220p Electromagnetic contactor (for forward drive of elevator drive) SS220p Contact CR320n Electromagnetic contactor (for reverse drive of swing drive) SS320n Contact CR320p Electromagnetic contactor (For normal rotation drive of swing drive device) SS320p contact CR400 Electromagnetic contact part (for drive of cutting device) SS400 contact SW200 Elevating changeover switch SW300 Slewing changeover switch SW400 Disconnection switch

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masanori Abe, No. 1 Takamichi, Iwazuka-machi, Nakamura-ku, Nagoya City, Nagoya Research Laboratory, Mitsubishi Heavy Industries, Ltd. (72) Kazunori Kudo, No. 1 Takamichi, Iwatsuka-machi, Nakamura-ku, Nagoya Mitsubishi Heavy Industries, Ltd. Nagoya Research Institute (72) Inventor Toshio Hattori No. 1 Takamichi, Iwazuka-cho, Nakamura-ku, Nagoya-shi Mitsubishi Heavy Industries Ltd. Nagoya Research Institute (72) Inventor Seiji Nakamura No. 1, Iwatsuka-machi, Nakamura-ku, Nagoya Mitsubishi Heavy Industries, Ltd. Nagoya Research Institute (72) Inventor, Masamitsu Narita, No. 1 Takamichi, Iwazuka-cho, Nakamura-ku, Nagoya City Mitsubishi Heavy Industries, Ltd. Nagoya Research Institute (72) Inventor, Suemo Nakamura 60, Iwatsuka-cho, Nakamura-ku, Nagoya No. 1 Nakatishi Engineering Co., Ltd. (72) Inventor Kazuo Kitajima Nagoya City Subdivision Iwatsuka the town in one of the nine antiferromagnetic office 60 Address Mitsubishi Engineering within Co., Ltd. (72) inventor Sonohara HisashiToshi, Nakamura-ku, Nagoya, Iwatsuka-cho high road address 1 Mitsubishi Heavy Industries, Ltd., Nagoya equipment Works in

Claims (26)

[Claims] 1. A guide wheel (230) including a power source (100, 100A) that outputs a power medium such as compressed air and electricity, and at least one drive wheel that is normally and reversely driven by the power medium from the power source. , 240), a pinching wheel (260) for pinching a tree as a columnar body (1) having an annular outer periphery in cross section in cooperation with the guide wheel, and a brake device (290). An elevating device (200) that ascends and descends along an axis, and a swing drive device (30) mounted on the elevating device and operated by a power medium from the power source.
0) and a swivel base (360) which is swung by the swivel drive device and swivels forward and backward in a plane perpendicular to the axis of the columnar body.
And a tool supporting device (500) arranged on the swivel base
A nipping type cutting device (400) which is supported by the tool supporting device and swings by a power medium from the power source in a plane parallel to the axis of the columnar body, and the lifting device (200). A power medium supply device (600) for supplying a power medium to the turning drive device (300) and the sandwiching type cutting device (400), and a control device (700) for controlling the supply of the power medium by the power medium supply device. A power type pinching pruning device characterized by being provided. 2. The power source (100, 100A) is a portable air compressor (100) in which an air compressor and an engine for driving the air compressor are integrated, and a generator and the generator are driven. 2. The power type pinching pruning device according to claim 1, which is a portable power source such as a portable DC power generator (100 A) such as a battery or a portable DC power generator integrated with an engine. 3. The power source (100) is an air compressor driven by an engine, and a discharge pressure detecting means for detecting a discharge pressure of the air compressor, and an opening / closing valve for controlling the discharge pressure. A discharge pressure control means for controlling the discharge pressure by adjusting the opening degree of the on-off valve according to the difference between the detection value detected by the discharge pressure detection means and the set value; and an intake throttle valve of the engine. Linear displacement means that is interlocked with the opening degree adjusting means and operates so as to reduce the engine speed and stop the power transmission action of the clutch when the discharge pressure is equal to or higher than a predetermined value. Item 1. A power-type sandwich type pruning device according to item 1. 4. An elevating device (200), a swivel driving device (300) mounted on the elevating device, an apparatus inseparable from the elevating device such as the sandwiching type cutting device (400) are used as moving parts, and the other. The power source (100), which can be arranged remotely to the lifting device, and the control device (70) for controlling the supply of the power medium by the power medium supply device.
0) as a fixed part that can be fixed at a fixed position on the ground or the like, the motion part and the fixed part are a power medium supply device (680) that shares a power medium supply system, and a control signal is supplied. 2. The power type pinching type pruning device according to claim 1, wherein the power type pinching type pruning device is configured to be connected so as to be centrally separable from each other via a control signal supply device (760) sharing the system. 5. A backrest portion is formed on a machine frame of the elevating device (200), and devices and devices mounted on the elevating device use the backrest portion to carry the elevating device on their backs. The power-operated pinching type pruning device according to any one of claims 1 to 4, wherein the power-type pinching-type pruning device is arranged on the machine frame so as not to become an obstacle. 6. The elevating device (200) includes a machine casing (21).
0) and a plurality of pairs of guide wheels (23) arranged on one side of the machine casing at intervals in the longitudinal direction of the machine casing.
0, 240), and each guide wheel pair is composed of a pair of left and right guide wheels, and at least one pair of guide wheels of the plurality of guide wheel pairs is a drive wheel driven by a drive device (220). The pair of wheels forming each pair of guide wheels straddle the columnar body so that when they come into contact with the surface of the columnar body (1), the axes of the columnar bodies are expected to be equiangular from the same distance. 2. The power-operated scissors according to claim 1, wherein the power-operated scissors are arranged so as to be rotatable at various positions so as to guide the machine frame in the axial direction of the columnar body and to travel. Mold pruning device. 7. The power-operated pinching type pruning device according to claim 6, wherein the pair of guide wheels are rotatably supported by wheel shafts arranged in parallel with each other in the same plane. . 8. The pair of wheels forming each of the pair of guide wheels (230, 240) are integrally formed in a shape that is continuous in the axial direction with each other, and have a constricted central portion, and the diameter gradually increases toward both ends. As described above, the outline of the outer peripheral portion of the cross section passing through the axis is V-shaped.
Powered pinching type pruning device. 9. The axis line of each wheel shaft of a pair of wheels forming each pair of said guide wheels (230, 240) intersects in a V shape in a plane perpendicular to the longitudinal direction of the machine frame of said lifting device. 7. The power-operated pinching type pruning device according to claim 6, wherein 10. The pair of guide wheels (230, 240)
10. The power-operated pinching type pruning device according to claim 9, wherein an outer peripheral portion of a cross section passing through the shaft center of the wheel constituting the above-mentioned structure projects outward in a substantially arc shape. 11. The lifting device (200) is characterized in that the pair of guide wheels (230, 240) has a shaft of the columnar body (1) at a side portion on one longitudinal end of a machine frame (210) of the lifting device. A swing arm (250) swingably supported about an axis provided perpendicular to a plane that divides the angle of looking into the heart,
The machine frame is supported so as to be rotatable about an axis provided on the swing arm, and the columnar body (1) is sandwiched between the guide wheel pair so as to cooperate with the guide wheel pair. And a holding wheel (260) for allowing the vehicle to travel along the surface of the columnar body in the axial direction of the columnar body, and urging the holding wheel toward the guide wheel pair side, 7. The power-operated pinching pruning device according to claim 6, further comprising a biasing device (270) for generating a frictional force between the pair of guide wheels and the columnar body. 12. The power-operated pinching pruning device according to claim 1, wherein a friction material layer is formed on at least a surface of a driving wheel of the guide wheels (230, 240). . 13. The power-operated pruning device according to claim 1, wherein the braking device (290) of the lifting device (200) is a linear drive type direct-acting braking device. 14. The turning drive device (300) includes a machine frame (310), a drive ring (350) having a circular outer peripheral shape,
At least two support rollers (3) rotatably supported by the machine frame and circumscribing the outer periphery of the drive ring to support the drive ring so that the drive ring can rotate about a center line.
30) and a drive roller that is rotatably supported by the machine frame, circumscribes the outer circumference of the drive ring, cooperates with the support roller to support the drive ring, and transmits a rotational force to the drive ring. 340) and a forward / reverse rotation drive device (320) for driving the drive roller in forward / reverse rotation, the power type pinching type pruning device according to claim 1. 15. The turning drive device (300) has a machine frame (310) of the turning drive device for adjusting the position of a rotation center of the turning drive device.
0) to the machine frame (210), the direction of a plane that equally divides the angle of the axial center of the columnar body (1) of the guide wheel pair (230, 240) along the turning plane of the turning drive device. The power type pruning device according to any one of claims 1 to 13, wherein the power type pruning device is slidable. 16. The power-operated pinching pruning device according to claim 14, wherein the drive ring (350) is formed of a flat plate. 17. Powered pinching pruning device according to claim 14 or 15, characterized in that the drive ring (350) is formed by a tube of circular cross section. 18. The power-operated sandwich type according to claim 14, wherein a friction material layer is formed on a surface of the drive roller (340) of the orbiting drive device (300). Pruning device. 19. The tool support device (500) is configured such that, on a swivel base (360) of the swivel drive device (300), a turning radius of the tool support device from a rotation center of the swivel base is variable. 19. The power-operated pinching type pruning device according to claim 1, wherein the power-type pinching type pruning device is disposed so as to be slidable in at least one linear direction. 20. The tool supporting device (500) is configured to be biased toward the columnar body (1) by a biasing device (530).
Powered pinching type pruning device. 21. The nipping type cutting device (400) comprises a pair of cutting blades (440) driven by a linear displacement type linear motion type driving device (470). 20. A power type pinching pruning device of any one of 20. 22. A pair of cutting blades (440) of the sandwich type cutting device (400) of a linear displacement type having an exciting coil and a plunger electromagnetically driven by the exciting coil, which is electromagnetically operated. 22. The power-operated pinching pruning device according to claim 21, which is configured to be driven by a direct drive device. 23. The pair of cutting blades (440) of the sandwich type cutting device (400) is driven by a heating type linear displacement type driving device including a thermoelastic member having a shape memory property and an expansion link. 22. The power-operated pinching pruning device according to claim 21, which is configured as follows. 24. The pair of cutting blades (440) of the sandwich type cutting device (400) is configured to start a cutting operation in conjunction with vertical swing. 21. A power type pinching pruning device according to any one of 21 to 23. 25. The revolving drive device (300A) includes a machine frame (310A) of the revolving drive device (300A) and a plane perpendicular to a vertical direction by the machine frame (310A) of the revolving drive device (300A). Drive ring (35
0) and the machine frame (3) of the turning drive device (300A).
10A), the lifting device (200A)
In the front of the machine frame of (3), the machine frame (31) of the turning drive device (300A) is guided by a guide arm (281) arranged toward the columnar body (1) in a plane perpendicular to the vertical direction.
0A) and a guide device (390) that is movable integrally with the guide device (390), and a swing fulcrum (Q) on the guide device (390) and an axle (231) of the guide wheel (233) that are swingable. A link (390) that pivotally connects the rotation fulcrums (P) on the swinging arm (250A), and the drive ring is linked to the swinging of the swinging arm (250). (35
0) A power type pinching type pruning device characterized in that the center of the turning motion of 0) is determined. 26. The lifting device (200A) comprises a drive sprocket (236) mounted on an axle (231) of the guide wheel (230A) and the guide wheel (230).
The driven sprocket (2) provided on the swing arm (250A) swingably arranged around the axle (231) of (A) as a fulcrum.
65), a driven sprocket (264) provided on the wheel shaft of the holding wheel (263), a drive sprocket (236) on the axle (231), and the swing shaft (25).
0A) a driven sprocket (265) on the inner peripheral side, and an endless power transmission means (225) contacting the driven sprocket (264) on the wheel shaft of the sandwiching wheel (263) on the outer peripheral side. Regardless of the swing of the swing arm (250A), the axle (231) of the guide wheel (230A), which is the swing fulcrum of the swing arm (250A), and the swing arm (25
0A), there is no change in the inter-axis distance from any rotation axis, and the guide wheel (230A) is always used as a drive wheel regardless of the swing of the swing arm (250A). The rotation of the guide wheel (230A) is controlled by the swing arm (2).
50A) A power-operated pinching type pruning device, characterized in that it is configured to transmit to a rotating shaft on the upper side.