Backpack portable bark cutting equipment
By designing a portable bark cutting device that can be carried on the back, using an engine to drive the tool to cut the bark and adjusting the depth through a screw and a resistance rod, the problems of time-consuming, labor-intensive and inconvenient operation in the existing technology are solved, and fast and smooth bark cutting and scale control are achieved.
Patent Information
- Application Number
- CN202520035803.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2035-01-07
AI Technical Summary
The existing technology is time-consuming and labor-intensive when cutting bark, cannot effectively prevent the scale larvae from climbing trees, and requires the chainsaw to be modified, which is inconvenient to operate.
A portable backpack bark cutting device was designed. The engine-driven rotating shaft drives the tool to cut the bark. The cutting depth is adjusted by combining a screw and a resistance rod. It is equipped with a hollow handle and a gripping rod for easy operation, and a soft shaft provides a flexible connection.
It achieves fast and smooth bark cutting, simplifies operation, improves work efficiency, and can effectively prevent scale larvae from climbing trees, avoiding damage to trees.
Smart Images
Figure CN223335144U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of forestry pest control, in particular to a portable bark cutting device for cutting bark. Background Art
[0002] With the vigorous development of ecological protection, people have improved the prevention and control methods of various forestry diseases and pests. Paramecium is a pest that lives in seclusion and is difficult to prevent and control. Paramecium has specific living habits. It usually climbs trees to cause damage in early spring and comes down from trees to lay eggs and overwinter in mid-to-late May. Among them, the barrier method is a method that is easy to operate, has a high prevention and control rate, and is economical. Before the Paramecium climbs trees to cause damage in early spring, the larvae can be prevented from climbing trees by tying plastic sheets or tape around the trunks. However, due to the microscopic unevenness of the bark, the Paramecium larvae can still climb up the tree through the depressions in the bark by simply tying plastic sheets or tape around the trunks. For this reason, people have come up with a method of cutting off the bark circumferentially on the trunk to form an annular groove, and then wrapping a plastic film or tape of corresponding width around the groove. This method can effectively prevent Paramecium from climbing trees.
[0003] However, when cutting the bark, you cannot cut off all the thickness of the bark. You can only cut the surface layer of the bark (that is, scrape off the old, warped and rough bark). Otherwise, the tree will not be able to survive due to the inability to effectively transport nutrients.
[0004] Currently, scraping the rough bark off old, warped trees is primarily done manually, which is time-consuming, labor-intensive, and difficult to achieve smooth finishes or securely wrap with plastic film or tape. A few organizations or individuals also employ the method of adding a cutting tool to the chain drive of a chainsaw, using the rotating chain to drive the cutting tool to cut the bark. However, this method requires additional modification to the chainsaw, and the resulting modification makes bark cutting inconvenient. Utility Model Content
[0005] The utility model aims to provide a portable bark cutting device which is simple in structure, easy to operate and convenient to work, can effectively cut bark and has smooth incisions.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A portable backpack bark cutting device includes a power unit 1, a flexible shaft 2, and a cutting device 3. The power unit 1 includes a backpack frame 11 and an engine 12 fixed to the backpack frame; the cutting device 3 includes a rotating shaft 32, a semicircular shield 33, and a tool 34; the rotating shaft 32 is coaxial with the shield 33 and is rotatably arranged on the concave side of the shield 33, one end of the rotating shaft 32 is connected to the output shaft of the engine through the flexible shaft 2, and the other end of the rotating shaft 32 is connected to a coaxial tool 34 for cutting bark; a holding rod 36 is fixed on the convex side of the shield 33.
[0008] The above-mentioned portable bark cutting device also includes a hollow handle 31. The hollow handle 31, which is coaxial with the shield 33, is fixed to one end of the shield 33. One end of the flexible shaft 2 passing through the hollow handle 31 is connected to the rotating shaft 32.
[0009] The above-mentioned portable back-carrying bark cutting equipment has a cable seat fixed on the outer periphery of the hollow handle 31. One end of the throttle cable passing through the cable seat is connected to the handle rotatably set on the hollow handle, and the other end is connected to the throttle adjustment device of the engine; when the handle is rotated relative to the hollow handle, the throttle adjustment device is pulled by the throttle cable to adjust the engine throttle size, thereby changing the output speed and torque of the engine.
[0010] The above-mentioned portable back-carrying bark cutting equipment is provided with screw seats 41 at both ends of the circumference of the guard 33, and the screws 42 connected to each screw seat 41 by a thread are circumferentially eccentric and perpendicular to the axis of the guard 33; when the tool 34 cuts the bark, the ends of the screws 42 on both sides of the tool 34 are in contact with the trunk, and the screws 42 are rotated relative to the screw seats 41 to adjust the distance between the guard 33 and the tool 34 in the radial direction relative to the trunk, thereby changing the cutting depth of the tool 34 on the bark.
[0011] The above-mentioned portable backpack bark cutting equipment is provided with two screw seats 41 at each end of the circumference of the guard 33, and two interference rods 43 are located on both sides of the tool 34 and parallel to the axis of the tool 34. Each interference rod 43 is connected to the two screws 42 located on the same side of the tool 34 by a rotational width; when the tool 34 cuts the bark, the interference rods 43 on both sides of the tool 34 are in contact with the trunk, and the screw 42 is rotated relative to the screw seat 41 to adjust the distance between the guard 33 and the tool 34 in the radial direction relative to the trunk, thereby changing the cutting depth of the tool 34 on the bark.
[0012] In the above-mentioned portable bark cutting device, the cutter is a spiral cutter having a spiral blade on the outer periphery of the cutter body, or the cutter is a straight cutter having a linear blade on the outer periphery of the cutter body.
[0013] In the above-mentioned portable bark cutting device, the flexible shaft 2 passes through the flexible shaft sleeve, and the two ends of the flexible shaft sleeve are fixedly connected to the engine housing and the shield 33 respectively.
[0014] Beneficial effects of the utility model:
[0015] The engine is carried on the operator's back and connected to the rotating shaft via a flexible shaft, which drives the tool. The flexible shaft is flexible and does not affect the cutting action or repositioning of the cutting mechanism. A handle on the shield provides a convenient grip for easy operation.
[0016] The hollow handle is also convenient for the operator to hold. In this way, the operator holds the handle bar and the hollow handle with both hands respectively, which makes the operation efficient and fast, and the throttle size can be adjusted by turning the handle.
[0017] The method of using a high-speed rotating tool to cut the bark to make a smooth cut, and then wrapping a plastic film or tape of corresponding width around the circular cut of the bark can effectively prevent the larvae of the scale insect from climbing up the tree trunk.
[0018] The depth of cut into the bark can be adjusted. When only a screw is used, the ends of the two screws 42 on either side of the cutter 34 contact the tree trunk. Rotating the screws 42 relative to the screw base 41 adjusts the radial distance of the cutter 34 from the tree trunk, thereby changing the depth of cut into the bark by the cutter 34. When a screw and an interference rod are used, the two interference rods on either side of the cutter 34 contact the tree trunk. Rotating the screws 42 relative to the screw base 41 adjusts the radial distance of the cutter 34 from the tree trunk, thereby changing the depth of cut into the bark by the cutter 34. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 、 2 3 and 4 are three-dimensional images of a portable bark cutting device;
[0020] Figure 4 、 5 They are three-dimensional diagrams of the connection of the hollow handle, shaft, shield, screw, and resistance rod;
[0021] Figure 6 It is a schematic diagram of the connections between the cover, flexible shaft, rotating shaft, tool, etc.
[0022] In the figure, the power unit 1, the backpack 11, the gasoline engine 12; the flexible shaft 2,
[0023] Cutting device 3, hollow handle 31, rotating shaft 32, shield 33, cutting tool 34, cable holder 35, holding rod 36, throttle cable 37;
[0024] Screw seat 41, screw 42, and contact rod 43; DETAILED DESCRIPTION
[0025] See also Figure 1-3 The portable backpack bark cutting device shown includes a power device 1, a flexible shaft 2, and a cutting device 3.
[0026] The power device 1 includes a backpack frame 11 and a gasoline engine 12 fixed on the backpack frame.
[0027] See also Figure 4-6The cutting device 3 includes a hollow handle 31, a rotating shaft 32, a semicircular shield 33, a bark-cutting tool 34, a cable holder 35, a gripping rod 36, and a throttle cable 37. The hollow handle 31, coaxial with the shield 33, is fixed to one end of the shield 33. One end of the flexible shaft 2, which passes through the hollow handle 31, is connected to the rotating shaft 32. The rotating shaft 32, coaxial with the shield 33, is rotatably mounted on the concave side of the shield 33 via a bearing. The other end of the rotating shaft 32 is connected to the coaxial tool 34. The tool can be a spiral tool with a spiral blade on the outer periphery of the tool body, or a straight tool with a linear blade on the outer periphery of the tool body. A gripping rod 36 is fixed to the convex side of the shield 33.
[0028] The flexible shaft 2 passes through the flexible shaft sleeve, and the two ends of the flexible shaft sleeve are respectively fixedly connected with the engine housing and the hollow handle 31. The other end of the flexible shaft 2 is connected to the output shaft of the engine.
[0029] A cable seat 35 is fixed to the outer periphery of the hollow handle 31. One end of the throttle cable 37 passing through the cable seat 35 is connected to a handle (not shown) rotatably set on the hollow handle, and the other end is connected to the throttle adjustment device of the engine; when the handle is rotated relative to the hollow handle, the throttle adjustment device is pulled by the throttle cable to adjust the engine throttle size, thereby changing the output speed and torque of the engine.
[0030] Two screw seats 41 are provided at both ends of the circumference of the guard 33, and a screw 42 connected to each screw seat 41 by a thread is circumferentially skewed with the axis of the guard 33; two interference rods 43 are located on both sides of the tool 34 and are parallel to the axis of the tool 34, and each interference rod 43 is connected to the two screws 42 located on the same side of the tool 34 by a rotational width; when the tool 34 cuts the bark, the two interference rods 43 on both sides of the tool 34 contact the trunk, and the screw 42 is rotated relative to the screw seat 41 to adjust the distance between the guard 33 and the tool 34 in the radial direction relative to the trunk, thereby changing the cutting depth of the tool 34 on the bark.
[0031] The utility model can quickly cut the bark of tree materials, the incision is smooth and neat, and the convenience of work is increased.
[0032] The scope of protection of this patent includes but is not limited to the above embodiments. The scope of protection of this patent is based on the claims. Any replacement, deformation, and improvement of this technology that can be easily thought of by technicians in this field fall within the scope of protection of this patent.
Claims
1. A portable bark cutting device, comprising a power unit (1), a flexible shaft (2), and a cutting device (3), characterized in that: The power device (1) comprises a backpack (11) and an engine (12) fixed on the backpack; the cutting device (3) comprises a rotating shaft (32), a semicircular shield (33), and a cutter (34); the rotating shaft (32) coaxial with the shield (33) is rotatably arranged on the concave side of the shield (33), one end of the rotating shaft (32) is connected to the output shaft of the engine through a flexible shaft (2), and the other end of the rotating shaft (32) is connected to a coaxial cutter (34) for cutting bark; and a holding rod (36) is fixed on the convex side of the shield (33).
2. The portable bark cutting device according to claim 1, characterized in that: The hollow handle (31) is coaxial with the shield (33) and is fixed to one end of the shield (33). One end of the flexible shaft (2) passing through the hollow handle (31) is connected to the rotating shaft (32).
3. The portable bark cutting device according to claim 2, characterized in that: A cable seat is fixed on the outer periphery of the hollow handle (31); one end of a throttle cable passing through the cable seat is connected to a handle rotatably arranged on the hollow handle, and the other end is connected to a throttle adjustment device of the engine; when the handle is rotated relative to the hollow handle, the throttle adjustment device is pulled by the throttle cable to adjust the throttle size of the engine, thereby changing the output speed and torque of the engine.
4. The portable backpack bark cutting device according to claim 1, characterized in that: Screw seats (41) are provided at both ends of the circumference of the shield (33), and screws (42) connected to each screw seat (41) by a thread are perpendicular to the circumference of the axis of the shield (33); when the tool (34) cuts the bark, the ends of the screws (42) on both sides of the tool (34) contact the tree trunk, and the screws (42) are rotated relative to the screw seats (41) to adjust the distance between the shield (33) and the tool (34) in the radial direction relative to the tree trunk, thereby changing the cutting depth of the tool (34) on the bark.
5. The portable backpack bark cutting device according to claim 4, characterized in that: Two screw seats (41) are provided at each end of the circumference of the shield (33), and two abutment rods (43) are located on both sides of the tool (34) and are parallel to the axis of the tool (34). Each abutment rod (43) is connected to two screws (42) located on the same side of the tool (34) by a rotational width. When the tool (34) cuts the bark, the abutment rods (43) on both sides of the tool (34) abut against the tree trunk, and the screws (42) are rotated relative to the screw seats (41) to adjust the distance between the shield (33) and the tool (34) in the radial direction relative to the tree trunk, thereby changing the cutting depth of the tool (34) on the bark.
6. The portable backpack bark cutting device according to claim 1, characterized in that: The tool is a spiral tool having a spiral cutting edge on the outer periphery of the tool body, or the tool is a straight tool having a straight cutting edge on the outer periphery of the tool body.
7. The portable backpack bark cutting device according to claim 1, characterized in that: The flexible shaft (2) passes through the flexible shaft sleeve, and the two ends of the flexible shaft sleeve are fixedly connected to the engine housing and the protective cover (33) respectively.