Electric automatic pipeline guiding device
By designing electrically automated pipeline guidance devices, including adjustment, drive, stabilization and cutting devices, the difficulties in guiding and cutting pipes of different specifications in the prior art are solved, and the guidance and cutting adapted to pipes of different specifications are realized, and the conveying stability and efficiency are improved.
Patent Information
- Application Number
- CN202510198323.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-22
- Publication Date
- 2025-04-15
AI Technical Summary
The prior art can only guide pipes of a single specification, resulting in different specifications requiring different devices, increasing operating costs, and it is impossible to clamp and cut pipes after guidance is completed.
An electrically automated pipe guide device is designed, including a regulating device, a driving device, a stabilizing device and a cutting device. By adjusting the position and inclination angle of the rotating plate according to the pipe specifications, the driving device uses a motor and a roller system to convey and guide the pipe. The stabilizing device keeps the pipe stable through the limit roller and slide rod system. The cutting device uses a motor and a cutting disc to cut the pipe.
The device can adapt to pipes of different specifications and shapes, reduce friction, improve conveying stability, and cut the pipes after the guidance is completed, reducing operating costs and improving efficiency.
Smart Images
Figure CN119820645A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of pipeline guide devices, in particular to an electrically automated pipeline guide device. Background Art
[0002] Electrical engineering and automation is an emerging discipline in the field of electrical information, but because it is closely related to people's daily life and industrial production, it has developed very rapidly and is now relatively mature. It has become an important part of the high-tech industry and is widely used in industry, agriculture, national defense and other fields, playing an increasingly important role in the national economy. Its tentacles extend to all walks of life, from the design of a switch to the research of aerospace aircraft.
[0003] Although the prior art uses a guiding device to transport and guide the pipeline, the device can only guide a single pipeline during use, resulting in the need for different devices to guide pipelines of different specifications, which increases the operating cost. Therefore, those skilled in the art provide an electrically automated pipeline guiding device to solve the problems raised in the above background technology. Summary of the invention
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies in the prior art, the present invention provides an electrically automated pipeline guiding device, which solves the problem that it can adapt to pipelines of different specifications for guiding, and after the guiding is completed, the pipeline can be clamped and cut according to the length.
[0006] (II) Technical solution
[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an electrically automated pipeline guiding device, comprising two adjusting devices, a driving device, a stabilizing device, a cutting device and a support plate, the two adjusting devices being arranged at the top end of the support plate on the rear side, the driving device being arranged between the two adjusting devices, the stabilizing device being arranged at the top end of the support plate, the cutting device being arranged at the top end of the support plate on the front side, the adjusting device comprising two fixed blocks, the top ends of the two fixed blocks being slidably connected to sliders respectively, the top ends of the two sliders being rotatably connected to third telescopic rods respectively, the top ends of the two sliders being hinged to a rotating plate near one side of the middle of the support plate, the top end of the rotating plate being provided with a plurality of ball bearings in a rectangular array, the two fixed blocks being fixedly connected to a first fixed plate near one side of the middle of the support plate, the middle of the first fixed plate being rotatably connected to a first screw rod, and the side wall of the first screw rod being threadedly connected to an adjusting plate.
[0008] Preferably: the driving device includes a fixed shell, a plurality of second rollers are linearly arranged on the inner wall of the fixed shell, a plurality of second rollers are respectively fixedly connected to pulleys on the other sides, a plurality of first rollers are arranged on the top ends of the plurality of second rollers, a first motor is fixedly connected to the rear side of one side of the fixed shell, and the fixed shell is fixedly connected to the rear side of the middle part of the top end of the support plate.
[0009] Preferably: the stabilizing device includes a mounting frame, the top end of the mounting frame is respectively threadedly connected with a second screw rod on the front side and the rear side, the bottom ends of the two second screw rods are respectively rotatably connected with a second fixing plate, the top ends of the two second fixing plates are respectively fixedly connected with a limiting rod on both sides, the bottom ends of the two second fixing plates are respectively fixedly connected with a sleeve on both sides, the inner side walls of the two sleeves are respectively slidably connected with a sliding rod, the two side walls of the sleeves are respectively sleeved with a spring, the bottom ends of the four sliding rods are provided with two limiting rollers, the mounting frame is fixedly connected to the rear side of the top end of the support plate.
[0010] Preferably: the cutting device includes a fixed frame, wherein the second telescopic rod is fixedly connected to both sides of the fixed frame, the two second telescopic rods movable ends respectively pass through the fixed frame and are fixedly connected to the first clamping blocks, the two first clamping blocks are rotatably connected to the second clamping blocks near the support plate, the four second clamping blocks are rotatably connected to the two third clamping blocks near the middle of the support plate, and the eight third clamping blocks are rotatably connected to the two fourth clamping blocks near the middle of the support plate. The front end of the fixed frame is fixedly connected to a shell, the inner side wall of the shell is rotatably connected to a third screw rod, and the side wall of the third screw rod is threadedly connected to the first telescopic rod, the movable end of the first telescopic rod is fixedly connected to the second motor, the front end of the second motor is rotatably connected to a cutting disk, one side of the shell is fixedly connected to the third motor, and the fixed frame is fixedly connected to the front side of the top end of the support plate.
[0011] Preferably, the movable ends of the four third telescopic rods are rotatably connected to the front and rear sides of the middle of the bottom end of the rotating plate, and the two adjustment plates respectively penetrate the side walls of the fixed block and are fixedly connected to the side walls of the four sliders.
[0012] Preferably: the output end of the first motor passes through one side of the fixed shell and is fixedly connected to one end of the second roller on the rear side of the inner wall of the fixed shell, several side walls of the pulley are provided with belts, the other ends of several first rollers are fixedly connected to one side of the two first fixed plates close to the middle of the support plate, and several side walls of the first rollers are in contact with several side walls of the second rollers.
[0013] Preferably, the side walls of the four limit rods are slidably connected to the top of the mounting frame, and one end of the four springs is fixedly connected to the tops of the two second fixing plates.
[0014] Preferably: two first grooves are provided at the front end of the second clamping block, and the inner walls of the two first grooves are respectively fixedly connected with protrusions, and second grooves are respectively provided in the middle of the two protrusions, and a third groove is provided at the rear end of the second clamping block. A limiting bolt is threadedly connected to the middle part of the front end of the second clamping block, and the two first clamping blocks, four second clamping blocks, eight third clamping blocks and sixteen fourth clamping blocks are equal in structure and proportionally reduced, the output end of the third motor passes through one side of the shell and is fixedly connected to one end of the third screw rod, the output end of the second motor is fixedly connected to the middle part of the rear end of the cutting disk, and the second telescopic rod is slidably connected to the inner wall of the shell.
[0015] Working principle: According to the specifications of the pipeline, the first screw rod 105 is rotated, and the first screw rod 105 is used to drive the adjustment plate 106 to move, so as to adjust the position of the rotating plate 104. At the same time, the third telescopic rod 107 is extended to adjust the inclination angle of the rotating plate 104, so that the rotating plate 104 can contact the surface of the pipeline. After the pipeline enters the device, the first motor 205 is turned on to drive the second roller 204 to rotate, so that the second roller 204 can drive the first roller 201 to rotate, and the first roller 201 can be used to transport the pipeline forward. At the same time, the second screw rod 303 is rotated to make the limit roller 308 contact the surface of the pipeline. When the limit roller When 308 contacts the pipeline, it will move according to the shape of the pipeline surface with the cooperation of the slide rod 306 and the spring 307, so that the position of the pipeline will not be offset. At the same time, when the pipeline continues to be transported forward, it can be extended by the second telescopic rod 406 and contact the pipeline surface by using the fourth clamping block 4012. At this time, the fourth clamping block 4012, the third clamping block 4011 and the second clamping block 4010 will all change according to the shape of the pipeline. After the pipeline is fixed, the third motor 408 can be used to drive the third screw rod 407 to rotate, and together with the extension and retraction of the second telescopic rod 406, the cutting disk 402 can be driven to rotate by the second motor 405 to cut the pipeline.
[0016] (III) Beneficial effects
[0017] The present invention provides an electrically automated pipeline guiding device, which has the following beneficial effects:
[0018] 1. By setting the adjustment device, according to the specifications of the pipeline, the first screw is rotated, and the adjustment plate is driven to move by the first screw to adjust the position of the rotating plate. At the same time, the third telescopic rod can be extended to adjust the inclination angle of the rotating plate, so that the rotating plate can contact the surface of the pipeline, which can make the device as a whole more suitable for pipelines of different specifications and shapes, and the ball bearings on the rotating plate can effectively reduce the friction generated by the pipeline during transportation.
[0019] 2. By setting up a driving device, after the pipeline enters the device, turn on the first motor to drive the second roller to rotate, so that the second roller can drive the first roller to rotate. The first roller can be used to transport the pipeline forward, providing power for pipeline transportation, which is convenient for pipeline transportation and guiding.
[0020] 3. By setting up a stabilizing device and rotating the second screw rod, the limit roller will contact the pipe surface. When the limit roller contacts the pipe, it will move according to the shape of the pipe surface with the cooperation of the slide rod and the spring, so that the position of the pipe will not shift, effectively improving the stability of the pipe during transportation and avoiding deviation during transportation.
[0021] 4. By setting up the cutting device, when the pipeline continues to be transported forward, the second telescopic rod can be extended, and the fourth clamping block can be used to contact the surface of the pipeline. At this time, the fourth clamping block, the third clamping block and the second clamping block will all change according to the shape of the pipeline. After the pipeline is fixed, the third motor can be used to drive the third screw rod to rotate, and the second telescopic rod can be extended and retracted. The cutting disc can be driven to rotate by the second motor to cut the pipeline, effectively cutting the pipeline and ensuring stability during cutting. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the structure of the present invention;
[0023] Figure 2 It is a structural schematic diagram of the driving device of the present invention;
[0024] Figure 3 It is a structural schematic diagram of the regulating device of the present invention;
[0025] Figure 4 It is a front view structural schematic diagram of the stabilizing device of the present invention;
[0026] Figure 5 It is a schematic structural diagram of the cutting device of the present invention;
[0027] Figure 6 It is a schematic structural diagram of the second clamping block of the present invention.
[0028] Among them, 1. adjustment device; 101. fixed block; 102. slider; 103. ball bearing; 104. rotating plate; 105. first screw rod; 106. adjustment plate; 107. third telescopic rod; 108. first fixed plate; 2. driving device; 201. first roller; 202. pulley; 203. fixed shell; 204. second roller; 205. first motor; 3. stabilizing device; 301. mounting frame; 302. limit rod; 303. second screw rod; 304. sleeve; 305. second fixed plate; 306. slide rod; 30 7. Spring; 308. Limit roller; 4. Cutting device; 401. Shell; 402. Cutting disc; 403. First telescopic rod; 404. Fixing frame; 405. Second motor; 406. Second telescopic rod; 407. Third screw rod; 408. Third motor; 409. First clamping block; 4010. Second clamping block; 4011. Third clamping block; 4012. Fourth clamping block; 4013. First groove; 4014. Limit bolt; 4015. Protrusion; 4016. Second groove; 4017. Third groove; 5. Support plate. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0030] Embodiment 1:
[0031] like Figure 1-6As shown, an embodiment of the present invention provides an electrically automated pipeline guiding device, comprising two adjusting devices 1, a driving device 2, a stabilizing device 3, a cutting device 4 and a supporting plate 5, wherein the two adjusting devices 1 are arranged at the top end of the supporting plate 5 and on the rear side, the driving device 2 is arranged between the two adjusting devices 1, the stabilizing device 3 is arranged at the top end of the supporting plate 5, and the cutting device 4 is arranged at the top end of the supporting plate 5 and on the front side, the adjusting device 1 comprises two fixing blocks 101, the top ends of the two fixing blocks 101 are respectively slidably connected with sliders 102, the top ends of the two sliders 102 are respectively rotatably connected with third telescopic rods 107, the top ends of the two sliders 102 are hinged with a rotating plate 104 near the middle of the supporting plate 5, and the top ends of the rotating plate 104 are provided with a plurality of balls 103 in a rectangular array, The two fixing blocks 101 are fixedly connected to the first fixing plate 108 near one side of the middle of the support plate 5. The middle of the first fixing plate 108 is rotatably connected to the first screw rod 105. The side wall of the first screw rod 105 is threadedly connected with an adjusting plate 106. By setting the adjusting device 1, according to the specifications of the pipeline, the first screw rod 105 is rotated, and the first screw rod 105 is used to drive the adjusting plate 106 to move, so as to adjust the position of the rotating plate 104. At the same time, the third telescopic rod 107 can be telescoped to adjust the inclination angle of the rotating plate 104, so that the rotating plate 104 can contact with the surface of the pipeline, so that the overall device can be more suitable for pipelines of different specifications and shapes, and the ball 103 on the rotating plate 104 can be used to effectively reduce the friction generated by the pipeline during transportation.
[0032] The movable ends of the four third telescopic rods 107 are rotatably connected to the front and rear sides of the middle of the bottom end of the rotating plate 104 respectively, and the two adjustment plates 106 penetrate the side walls of the fixed block 101 and are fixedly connected to the side walls of the four sliders 102 respectively.
[0033] The driving device 2 includes a fixed shell 203, and a plurality of second rollers 204 are linearly arranged on the inner wall of the fixed shell 203. The other sides of the plurality of second rollers 204 are respectively fixedly connected with pulleys 202. The tops of the plurality of second rollers 204 are provided with a plurality of first rollers 201. A first motor 205 is fixedly connected to the rear side of one side of the fixed shell 203. The fixed shell 203 is fixedly connected to the rear side of the middle part of the top of the support plate 5. By setting the driving device 2, after the pipeline enters the device, the first motor 205 is turned on to drive the second rollers 204 to rotate, so that the second rollers 204 can drive the first rollers 201 to rotate. The first rollers 201 can be used to transport the pipeline forward, provide power for pipeline transportation, and facilitate pipeline transportation and guidance.
[0034] The output end of the first motor 205 passes through one side of the fixed shell 203 and is fixedly connected to one end of the second roller 204 on the rear side of the inner wall of the fixed shell 203. Belts are provided on the side walls of the plurality of pulleys 202. The other ends of the plurality of first rollers 201 are fixedly connected to one side of the two first fixed plates 108 close to the middle of the support plate 5. The side walls of the plurality of first rollers 201 are in contact with the side walls of the plurality of second rollers 204.
[0035] The stabilizing device 3 includes a mounting frame 301, and a second screw rod 303 is threadedly connected to the front side and the rear side of the top of the mounting frame 301 respectively, and the bottom ends of the two second screw rods 303 are rotatably connected to the second fixing plates 305 respectively, and the limiting rods 302 are fixedly connected to the top sides of the two second fixing plates 305 respectively, and the sleeves 304 are fixedly connected to the bottom sides of the two second fixing plates 305 respectively, and the inner side walls of the two sleeves 304 are slidably connected to the sliding rods 306 respectively, and the side walls of the two sleeves 304 are respectively sleeved with springs 307, and the bottom ends of the four sliding rods 306 are provided with two limiting rollers 308, and the mounting frame 301 is fixedly connected to the rear side of the top of the support plate 5. By setting the stabilizing device 3, the second screw rod 303 is rotated to make the limiting roller 308 contact with the pipeline surface. When the limiting roller 308 contacts with the pipeline, it will move according to the shape of the pipeline surface under the cooperation of the sliding rod 306 and the spring 307, so that the pipeline position will not be offset, which effectively improves the stability of the pipeline during transportation and avoids offset during transportation.
[0036] The side walls of the four limiting rods 302 are slidably connected to the top of the mounting frame 301 , and one end of the four springs 307 is fixedly connected to the top of the two second fixing plates 305 .
[0037] The cutting device 4 includes a fixed frame 404, and the two sides of the fixed frame 404 are respectively fixedly connected with the second telescopic rod 406, the movable ends of the two second telescopic rods 406 pass through the fixed frame 404 and are fixedly connected with the first clamping block 409, the two first clamping blocks 409 are respectively rotatably connected with the second clamping blocks 4010 near the support plate 5, the four second clamping blocks 4010 are respectively rotatably connected with the two third clamping blocks 4011 near the middle of the support plate 5, and the eight third clamping blocks 4011 are respectively rotatably connected with the two fourth clamping blocks 4012 near the middle of the support plate 5. The front end of the fixed frame 404 is fixedly connected with the shell 401, and the inner side wall of the shell 401 is rotatably connected with the third screw rod 407, the side wall of the third screw rod 407 is threadedly connected with the first telescopic rod 403, and the movable end of the first telescopic rod 403 is fixedly connected with the second motor 405, the front end of the second motor 405 is rotatably connected to the cutting disk 402, and the third motor 408 is fixedly connected to one side of the shell 401, and the fixing frame 404 is fixedly connected to the front side of the top of the support plate 5. By setting the cutting device 4, when the pipeline continues to be transported forward, it can be extended by the second telescopic rod 406, and the fourth clamping block 4012 is used to contact the surface of the pipeline. At this time, the fourth clamping block 4012, the third clamping block 4011 and the second clamping block 4010 will all change according to the shape of the pipeline. After the pipeline is fixed, the third motor 408 can be used to drive the third screw rod 407 to rotate, and together with the extension and retraction of the second telescopic rod 406, the cutting disk 402 is driven to rotate by the second motor 405 to cut the pipeline, effectively cut the pipeline, and ensure stability during cutting.
[0038] Two first grooves 4013 are provided at the front end of the second clamping block 4010, and the inner walls of the two first grooves 4013 are respectively fixedly connected with protrusions 4015, and the middle parts of the two protrusions 4015 are respectively provided with second grooves 4016, and the rear end of the second clamping block 4010 is provided with a third groove 4017, and the middle part of the front end of the second clamping block 4010 is threadedly connected with a limiting bolt 4014, the two first clamping blocks 409, the four second clamping blocks 4010, the eight third clamping blocks 4011 and the sixteen fourth clamping blocks 4012 are equal in structure and proportionally reduced, the output end of the third motor 408 passes through one side of the shell 401 and is fixedly connected to one end of the third screw rod 407, the output end of the second motor 405 is fixedly connected to the middle part of the rear end of the cutting disk 402, and the second telescopic rod 406 is slidably connected to the inner wall of the shell 401.
[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An electrically automated pipeline guiding device, comprising two adjusting devices (1), a driving device (2), a stabilizing device (3), a cutting device (4) and a supporting plate (5), wherein the two adjusting devices (1) are arranged at the top end of the supporting plate (5) on the rear side, the driving device (2) is arranged between the two adjusting devices (1), the stabilizing device (3) is arranged at the top end of the supporting plate (5), and the cutting device (4) is arranged at the top end of the supporting plate (5) on the front side, characterized in that: The adjusting device (1) comprises two fixed blocks (101), the top ends of the two fixed blocks (101) are respectively slidably connected to sliders (102), the top ends of the two sliders (102) are respectively rotatably connected to third telescopic rods (107), the top ends of the two sliders (102) are hingedly connected to a rotating plate (104) near the middle of the support plate (5), the top ends of the rotating plate (104) are provided with a plurality of balls (103) in a rectangular array, the two fixed blocks (101) are fixedly connected to a first fixed plate (108) near the middle of the support plate (5), the middle of the first fixed plate (108) is rotatably connected to a first screw rod (105), and the side wall of the first screw rod (105) is threadedly connected to an adjusting plate (106).
2. The electrically automated pipeline guiding device according to claim 1, characterized in that: The driving device (2) comprises a fixed shell (203), a plurality of second rollers (204) are linearly arranged on the inner side wall of the fixed shell (203), a plurality of second rollers (204) are respectively fixedly connected to pulleys (202) on the other side, a plurality of first rollers (201) are arranged on the top ends of the plurality of second rollers (204), a first motor (205) is fixedly connected to one side of the fixed shell (203) at the rear side, and the fixed shell (203) is fixedly connected to the rear side of the middle part of the top end of the support plate (5).
3. The electrically automated pipeline guiding device according to claim 1, characterized in that: The stabilizing device (3) comprises a mounting frame (301), the top end of the mounting frame (301) is respectively threadedly connected with a second screw rod (303) on the front side and the rear side, the bottom ends of the two second screw rods (303) are respectively rotatably connected with a second fixing plate (305), the top ends of the two second fixing plates (305) are respectively fixedly connected with a limiting rod (302) on both sides, the bottom ends of the two second fixing plates (305) are respectively fixedly connected with a sleeve (304) on both sides, the inner side walls of the two sleeves (304) are respectively slidably connected with a sliding rod (306), the side walls of the two sleeves (304) are respectively sleeved with a spring (307), and the bottom ends of the four sliding rods (306) are provided with two limiting rollers (308), and the mounting frame (301) is fixedly connected to the rear side of the top end of the support plate (5).
4. The electrically automated pipeline guiding device according to claim 1, characterized in that: The cutting device (4) comprises a fixed frame (404), and the two sides of the fixed frame (404) are respectively fixedly connected with second telescopic rods (406), and the movable ends of the two second telescopic rods (406) respectively penetrate the fixed frame (404) and are fixedly connected with first clamping blocks (409), and the two first clamping blocks (409) are respectively rotatably connected with second clamping blocks (4010) near the support plate (5), and the four second clamping blocks (4010) are respectively rotatably connected with two third clamping blocks (4011) near the middle of the support plate (5), and the eight third clamping blocks (4011) are respectively rotatably connected with the middle of the support plate (5). The two fourth clamping blocks (4012) are rotatably connected, the front end of the fixing frame (404) is fixedly connected to the shell (401), the inner side wall of the shell (401) is rotatably connected to the third screw rod (407), the side wall of the third screw rod (407) is threadedly connected to the first telescopic rod (403), the movable end of the first telescopic rod (403) is fixedly connected to the second motor (405), the front end of the second motor (405) is rotatably connected to the cutting disc (402), one side of the shell (401) is fixedly connected to the third motor (408), and the fixing frame (404) is fixedly connected to the front side of the top end of the support plate (5).
5. The electrically automated pipeline guiding device according to claim 1, characterized in that: The movable ends of the four third telescopic rods (107) are rotatably connected to the front and rear sides of the middle of the bottom end of the rotating plate (104), and the two adjustment plates (106) respectively penetrate the side walls of the fixed block (101) and are fixedly connected to the side walls of the four sliding blocks (102).
6. The electrically automated pipeline guiding device according to claim 2, characterized in that: The output end of the first motor (205) passes through one side of the fixed shell (203) and is fixedly connected to one end of the second roller (204) on the inner side wall of the fixed shell (203) close to the rear side; a plurality of side walls of the pulleys (202) are provided with belts; the other ends of the plurality of first rollers (201) are fixedly connected to one side of the two first fixed plates (108) close to the middle of the support plate (5); and the side walls of the plurality of first rollers (201) are in contact with the side walls of the plurality of second rollers (204).
7. The electrically automated pipeline guiding device according to claim 3, characterized in that: The side walls of the four limiting rods (302) are slidably connected to the top of the mounting frame (301), and one end of the four springs (307) is fixedly connected to the tops of the two second fixing plates (305).
8. The electrically automated pipeline guiding device according to claim 4, characterized in that: The front end of the second clamping block (4010) is provided with two first grooves (4013), the inner side walls of the two first grooves (4013) are respectively fixedly connected with a protrusion (4015), the middle parts of the two protrusions (4015) are respectively provided with a second groove (4016), the rear end of the second clamping block (4010) is provided with a third groove (4017), the middle part of the front end of the second clamping block (4010) is threadedly connected with a limiting bolt (4014), the two first clamping blocks (409), the four second clamping blocks (4010), the eight third clamping blocks (4011) and the sixteen fourth clamping blocks (4012) are equal in structure and proportionally reduced, the output end of the third motor (408) passes through one side of the shell (401) and is fixedly connected to one end of the third screw rod (407), the output end of the second motor (405) is fixedly connected to the middle part of the rear end of the cutting disk (402), and the second telescopic rod (406) is slidably connected to the inner side wall of the shell (401).