Pipe penetrating tool for large-scale pipe gallery pipeline

Abstract

The utility model relates to the technical field of pipeline installation construction, and discloses a large-scale pipe gallery pipeline penetrating tool which comprises a machine base and a fixing column, one end of the fixing column is fixedly connected with a rear baffle, the outer wall of the rear baffle is fixedly connected with a first telescopic rod, and the top of the outer wall of the first telescopic rod is connected with a supporting strip. A spring is connected to the outer wall of the supporting strip, a fixing button is fixedly connected to the top of the outer wall of the supporting strip, a first cross strip is connected to the outer wall of the supporting strip, a second cross strip is rotationally connected to the outer wall of the first cross strip, and a second telescopic rod is fixedly connected to the outer wall of the second cross strip. According to the pipeline diameter adjusting device, the first telescopic rod and the second telescopic rod are adjusted by controlling the angle of the two cross strips in the middle, so that the angle of self-adaptive adjustment is controlled, the adjusted distance is locked by adjusting the screw knob on the threaded rod at the top, and therefore self-defined adjustment of the pipeline diameter is completed.

Description

Technical Field

[0001] This utility model relates to the field of pipeline installation and construction technology, and in particular to a pipe-threading tool for large pipe corridors. Background Technology

[0002] Large-scale utility tunnels are important facilities in urban underground spaces, used for the centralized laying of power pipelines, communication lines, and water supply and drainage pipelines. Their complex structure requires comprehensive management and maintenance. Scientific planning is needed to improve operation and maintenance efficiency and ensure urban safety. Based on the characteristics of this type of project, specialized pipe-laying tools have emerged. This equipment adopts a modular design and is equipped with an intelligent control system. It can achieve precise positioning and adaptive traction in narrow utility tunnels. Its flexible guiding mechanism can conform to different pipe diameters to complete efficient installation, effectively reducing the risks of manual construction and providing reliable technical support for modern infrastructure.

[0003] Traditional pipe-threading tools for large utility tunnels mainly rely on external mechanical force or hydraulic systems to move the pipes inside the tunnel. The direction is controlled by a guide device, and the support structure is used to reduce the friction between the pipe and the pipe wall to ensure a smooth threading process. However, in actual use, the above devices have problems such as uneven friction distribution leading to increased local wear, lack of dynamic adjustment capability for changes in pipe diameter, and rigid support structure that cannot adapt to the deformation requirements of pipes of different materials.

[0004] While existing large-scale pipe-threading tools for utility tunnels optimize power transmission efficiency and improve installation convenience through modular structures, their core support and guide components still employ fixed-size designs, limiting their effectiveness to specific pipe specifications. However, in practical use, these devices lack a flexible structure for dynamically adjusting to pipes of different specifications and materials. When the pipe's outer diameter changes or there are significant differences in material hardness, the fixed guide wheels and support frame fail to provide effective buffering, leading to scratches or deformation on the pipe wall surface due to pressure concentration. Furthermore, the rigid contact surface is prone to high-frequency friction with the pipe during prolonged operation, accelerating pipe wear. Therefore, a new large-scale pipe-threading tool for utility tunnels is proposed to address these issues. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a pipe-threading tool for large-scale pipe corridors, aiming to improve the problem of the lack of a pipe adaptive compensation mechanism in the existing technology.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a large pipe gallery pipe threading tool, comprising a base and a fixed column, a rear baffle fixedly connected to one end of the fixed column, a first telescopic rod fixedly connected to the outer wall of the rear baffle, a support bar fixedly connected to the top of the outer wall of the first telescopic rod, a spring fixedly connected to the outer wall of the support bar, a fixing button fixedly connected to the top of the outer wall of the support bar, a first cross bar fixedly connected to the outer wall of the support bar, a second cross bar rotatably connected to the outer wall of the first cross bar, a second telescopic rod fixedly connected to the outer wall of the second cross bar, a third telescopic rod fixedly connected to the outer wall of the second telescopic rod, a second locking block fixedly connected to the top of the outer wall of the first cross bar, a first locking block slidably connected inside the second locking block, a clamping plate fixedly connected to the top of the outer wall of the first locking block, a threaded rod threadedly connected to the outer wall of the clamping plate, a screw threadedly connected to the outer wall of the threaded rod, a front baffle fixedly connected to the top of the outer wall of the second telescopic rod, and a quick-release mechanism provided on the front side of the outer wall of the front baffle for quickly disassembling the supporting structure.

[0007] As a further description of the above technical solution:

[0008] The quick-release mechanism includes a first connecting rod, which is fixedly connected to the right side of the outer wall of the front baffle. One end of the first connecting rod is fixedly connected to an upper buckle. The outer wall of the upper buckle has a first threaded hole. The inner wall of the upper buckle is threaded with a screw. The outer wall of the screw is threaded with a nut. The outer wall of the screw is threaded with a lower buckle. The outer wall of the lower buckle has a second threaded hole. The right side of the outer wall of the lower buckle is fixedly connected to a second connecting rod.

[0009] As a further description of the above technical solution:

[0010] A reinforcing frame is fixedly connected to the top of the outer wall of the base, and the reinforcing frame is made of alloy material.

[0011] As a further description of the above technical solution:

[0012] A motor is fixedly connected to the top of the outer wall of the reinforcement frame, and a bearing is fixedly connected to one end of the motor.

[0013] As a further description of the above technical solution:

[0014] Two protective railings are fixedly connected to the top of the outer wall of the base, and the surface of the protective railings is rounded.

[0015] As a further description of the above technical solution:

[0016] A support column is fixedly connected to the top of the outer wall of the base, and a handle is fixedly connected to the top of the outer wall of the support column.

[0017] As a further description of the above technical solution:

[0018] A storage battery is fixedly connected to the top of the outer wall of the base, and the storage battery is electrically connected to the motor.

[0019] As a further description of the above technical solution:

[0020] Multiple rotating wheels are rotatably connected to the left and right sides of the outer wall of the base, and the outer walls of the multiple rotating wheels are textured.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by controlling the angle of the two intersecting bars in the middle, the first telescopic rod and the second telescopic rod are adjusted, thereby controlling the adaptive adjustment angle. Then, the adjusted spacing is locked by adjusting the screw on the threaded rod at the top, thus completing the custom adjustment of the pipe diameter.

[0023] 2. In this utility model, the upper buckle on the first connecting rod and the lower buckle on the second connecting rod are fixed by screws respectively. The outer walls of the upper buckle and the lower buckle are respectively provided with a first threaded hole and a second threaded hole. When the screws are used to fix them, the nuts are used to complete the final fixation. The disassembly method is the reverse operation, thereby completing the quick disassembly of the spacing adjustment structure. Attached Figure Description

[0024] Figure 1 This is a perspective view of a large-scale pipe gallery pipe threading tool proposed in this utility model;

[0025] Figure 2 This is a front view of a large-scale pipe gallery pipe threading tool proposed in this utility model;

[0026] Figure 3 This is a side view of a large pipe gallery pipe threading tool proposed in this utility model;

[0027] Figure 4 This is a perspective view of the first intersecting strip of a large pipe gallery pipe threading tool proposed in this utility model;

[0028] Figure 5 This is an exploded view of the quick-release mechanism of a large pipe gallery pipe threading tool proposed in this utility model.

[0029] Legend:

[0030] 1. Base; 2. Quick-release mechanism; 201. Screw; 202. Upper retaining ring; 203. First connecting rod; 204. Nut; 205. First threaded hole; 206. Second threaded hole; 207. Lower retaining ring; 208. Second connecting rod; 3. Fixing post; 4. Rear baffle; 5. First telescopic rod; 6. Spring; 7. Support bar; 8. Fixing button; 9. First cross bar; 10. Second cross bar; 11. Second telescopic rod; 12. Third telescopic rod; 13. Threaded rod; 14. Screw; 15. Clamping plate; 16. First locking block; 17. Second locking block; 18. Motor; 19. Bearing; 20. Guardrail; 21. Battery; 22. Support post; 23. Handle; 24. Reinforcing frame; 25. Rotary wheel; 26. Texture; 27. Front baffle. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1 , Figure 2 and Figure 4This utility model provides an embodiment of a large pipe gallery pipe-threading tool, including a base 1 and a fixed column 3. The main function of the base 1 is to support and fix the main structure of the equipment, ensuring its stable operation and providing an installation foundation and protection for the components. The fixed column 3 is used to connect the base 1 to other components. A rear baffle 4 is fixedly connected to one end of the fixed column 3. The rear baffle 4 is the direct medium connecting the fixed column 3. A first telescopic rod 5 is fixedly connected to the outer wall of the rear baffle 4, which is used to control the spacing of the rear devices. A support bar 7 is fixedly connected to the top of the outer wall of the first telescopic rod 5. A spring 6 is fixedly connected to the outer wall of the support bar 7. The spring 6 plays a certain buffering role to avoid longitudinal collisions during the transportation of the device. It is used to provide cushioning for the first telescopic rod 5 and the upper components. A certain spacing is provided to accommodate spring 6. A fixing button 8 is fixedly connected to the top of the outer wall of support bar 7, serving as a fixing limit to prevent excessive displacement of support bar 7. A first cross bar 9 is fixedly connected to the outer wall of support bar 7. A second cross bar 10 is rotatably connected to the outer wall of the first cross bar 9. The center points of the first cross bar 9 and the second cross bar 10 are fixed to each other and cooperate to form a scissor structure for controlling the extension size of the device. A second telescopic rod 11 is fixedly connected to the outer wall of the second cross bar 10, used to control the spacing of the front device. A third telescopic rod 12 is fixedly connected to the outer wall of the second telescopic rod 11. The third telescopic rod 12 is fixed longitudinally to the second telescopic rod 11 and the first telescopic rod 5, providing a certain lateral support and buffering force. A second locking block 17 is fixedly connected to the top of the outer wall of a crossbar 9. A first locking block 16 is slidably connected inside the second locking block 17. The first locking block 16 and the second locking block 17 cooperate with each other. The outer wall of the second locking block 17 has a slot, while the outer wall of the first locking block 16 has a protruding strip that matches the slot. Together, they act like a fence to prevent the pipe from falling during installation. A clamping plate 15 is fixedly connected to the top of the outer wall of the first locking block 16. A threaded rod 13 is threadedly connected to the outer wall of the clamping plate 15. The clamping plate 15 has holes that match the threaded rod 13 for fixing the adjusted size spacing. A button 14 is threadedly connected to the outer wall of the threaded rod 13 for fixing the straight rod. The second telescopic rod 11 is connected to a front baffle 27 on the top of its outer wall. A quick-release mechanism 2 is provided on the front side of the outer wall of the front baffle 27. The quick-release mechanism 2 is used to quickly disassemble the support structure. The front baffle 27 is used to fix the quick-release mechanism 2. A motor 18 is fixedly connected to the top of the outer wall of the reinforcing frame 24. A steel wire restraint net is fixedly connected to the output end of the motor 18. When the motor 18 is driven, the steel wire restraint net will tighten to prevent the pipeline from falling off during the laying. A bearing 19 is fixedly connected to one end of the motor 18. The bearing 19 is used to change the interface for the steel wire restraint net. A battery 21 is fixedly connected to the top of the outer wall of the connecting base 1. The battery 21 is used to provide power reserves for the movement of the motor 18 and the device. The battery 21 is electrically connected to the motor 18.

[0033] Specifically, the base 1, as the core support structure, is responsible for fixing the main frame of the equipment, ensuring stable operation, and providing an installation foundation and protection for internal components. The fixing column 3, as an intermediary structure connecting the base 1 to other components, has one end rigidly connected to the rear baffle 4. The rear baffle 4, as the direct transmission carrier of the fixing column 3, has its outer wall securely mounted to the first telescopic rod 5. The first telescopic rod 5 controls the spacing of the rear devices through telescopic movement. The top of the outer wall of the first telescopic rod 5 is rigidly connected to the support bar 7. A spring 6 is mounted on the outer wall of the support bar 7. The spring 6 has a buffering function, used to absorb longitudinal impact forces generated during transportation, and also reserves installation space for the first telescopic rod 5 and the upper components to accommodate the spring 6. 7. A fixing button 8 is installed at the top of the outer wall. The fixing button 8 acts as a limiting device to prevent the support bar 7 from displacing beyond the safe range. The outer wall of the support bar 7 is fixedly connected to the first intersecting bar 9. The outer wall of the first intersecting bar 9 is movably connected to the second intersecting bar 10 through a pivot. The center points of the first intersecting bar 9 and the second intersecting bar 10 are locked together, and the two work together to form a scissor-type telescopic structure for precisely adjusting the extension length of the device. The outer wall of the second intersecting bar 10 is rigidly connected to the second telescopic rod 11. The second telescopic rod 11 controls the spacing of the front device by telescopic control. The outer wall of the second telescopic rod 11 is fixedly connected to the third telescopic rod 12. The third telescopic rod 12 is longitudinally locked to the second telescopic rod 11 and the first telescopic rod 5 respectively. The three work together to provide lateral support force and For buffering function, a second locking block 17 is installed on the top of the outer wall of the first crossbar 9. The second locking block 17 is slidably connected to the first locking block 16. The first locking block 16 and the second locking block 17 are interlocked with each other through slots and protrusions to form a fence-like protection mechanism to prevent the pipe from slipping during laying. The top of the outer wall of the first locking block 16 is rigidly connected to the clamping plate 15. The outer wall of the clamping plate 15 is screwed to the threaded rod 13 through a threaded hole. The threaded rod 13 passes through a preset hole in the clamping plate 15 to lock the adjusted spacing parameters. A screw 14 is screwed onto the outer wall of the threaded rod 13, which serves as the direct fixing carrier for the threaded rod 13. The top of the outer wall of the second telescopic rod 11 is rigidly connected to the front baffle 27. The front baffle 27 is fitted with a... The quick-release mechanism 2 is installed. The quick-release mechanism 2 achieves quick disassembly of the supporting structure through a buckle or pin design. The front baffle 27 serves as the mounting base for the quick-release mechanism 2. The motor 18 is fixed to the top of the outer wall of the reinforcement frame 24. The output end of the motor 18 is rigidly connected to the steel wire restraint net. When the motor 18 starts, it drives the steel wire restraint net to contract, forming a wrapping restraint force on the pipe to prevent the pipe from disengaging due to displacement during the laying process. One end of the motor 18 is rigidly connected to the bearing 19. The bearing 19 serves as an interface conversion component to ensure that the movement trajectory and tension of the steel wire restraint net are evenly distributed. The battery 21 is installed on the top of the outer wall of the base 1. The battery 21 provides power reserves for the movement of the motor 18 and the entire device, and forms a closed circuit with the motor 18 through wires.

[0034] Reference Figure 1 , Figure 3and Figure 5 The quick-release mechanism 2 includes a first connecting rod 203. One end of the first connecting rod 203 is fixedly connected to the right side of the outer wall of the front baffle 27. An upper retaining ring 202 is fixedly connected to one end of the first connecting rod 203. A first threaded hole 205 is opened on the outer wall of the upper retaining ring 202. A screw 201 is threadedly connected to the inner wall of the upper retaining ring 202. The screw 201 is used to connect and fasten the components, ensuring structural stability and preventing loosening or displacement. A nut 204 is threadedly connected to the outer wall of the screw 201. The nut 204 locks the connecting parts through thread engagement, ensuring the component is stable and preventing loosening or separation. Separately, a lower retaining ring 207 is threadedly connected to the outer wall of the screw 201. The outer wall of the lower retaining ring 207 has a second threaded hole 206. The function of the first threaded hole 205 and the second threaded hole 206 is to cooperate with the screw 201 to achieve a fastening connection by transmitting axial force through meshing. A second connecting rod 208 is fixedly connected to the right side of the outer wall of the lower retaining ring 207. The first connecting rod 203 is fixed to the upper retaining ring 202 and plays a role in fixing the upper part of the connection. The second connecting rod 208 is fixed to the lower retaining ring 207 and plays a role in fixing the lower part of the connection.

[0035] Specifically, one end of the first connecting rod 203 is fixed to the right side of the front baffle 27, and the other end is fitted with a retaining ring 202. The outer wall of the upper retaining ring 202 has a first threaded hole 205, and its inner wall is screwed on by a screw 201. The outer wall of the screw 201 is screwed with a nut 204 and a lower retaining ring 207 in sequence. The outer wall of the lower retaining ring 207 has a second threaded hole 206. The two holes cooperate with the screw 201 to transmit axial force and achieve fastening. The right side of the lower retaining ring 207 is fitted with a second connecting rod 208. The first connecting rod 203 and the second connecting rod 208 fix the upper and lower connecting parts respectively.

[0036] Reference Figure 1 , Figure 2 and Figure 3 A reinforcing frame 24 is fixedly connected to the top of the outer wall of the base 1. The reinforcing frame 24 is made of alloy material and is used to support the motor 18 and to limit its movement. Two guardrails 20 are fixedly connected to the top of the outer wall of the base 1. Their function is to isolate dangerous moving parts or areas, prevent personnel from contacting them and causing injury, and protect the equipment from external interference or collisions. The surface of the guardrails 20 is rounded. A support column 22 is fixedly connected to the top of the outer wall of the base 1. A handle 23 is fixedly connected to the top of the outer wall of the support column 22. The support column 22 is used to fix the handle 23. The handle 23 facilitates the handling of the device. Multiple rotating wheels 25 are rotatably connected to the left and right sides of the outer wall of the base 1. They facilitate the movement and position adjustment of the equipment. The rolling reduces frictional resistance, improves handling efficiency, and protects the ground and the machine structure. The outer walls of the multiple rotating wheels 25 are textured 26. Their function is to increase friction, prevent slippage, ensure movement stability, and improve operational safety.

[0037] Specifically, the top of the outer wall of the base 1 is rigidly connected to the reinforcing frame 24, which is made of alloy material and is used to support the motor 18 and limit its displacement. Two guardrails 20 are installed on both sides of the top of the base 1. The guardrails 20 are used to isolate the dangerous movement area of ​​the equipment, avoid personnel contact and injury, and prevent external objects from colliding with the equipment. Their surfaces are rounded to reduce the risk of scratches. The top of the base 1 is equipped with a support column 22, which is rigidly connected to the top of the support column 22 and the handle 23, making it easy for the operator to hold and move the equipment. Several rotating wheels 25 are installed on the left and right sides of the base 1. The rotating wheels 25 reduce the movement resistance by rolling, improve the equipment handling efficiency, and avoid wear caused by direct friction between the machine body and the ground. The outer wall of the rotating wheels 25 has a uniformly distributed texture 26. The texture 26 increases the coefficient of friction to prevent the equipment from slipping when moving, ensuring stable and reliable movement and enhancing the safety protection effect of operation.

[0038] Working principle: First, by adjusting the included angle between the two sets of intersecting bars located in the center of the structure, the first telescopic rod 5 and the second telescopic rod 11 can be moved synchronously, realizing the device's adaptive matching of the clamping angle. After the required angle is precisely adjusted, the operator needs to rotate the annular fastener mounted on the end of the top threaded rod 13. Using the axial pressure generated by the thread engagement, the determined spacing of the intersecting bars is mechanically fixed. During this process, the extension length of the two sets of telescopic rods and the included angle of the intersecting bars form a geometric linkage, so that the clamping mechanism can deform according to the actual size of the pipe's outer diameter, ultimately forming a ring-shaped fixation on the outer wall of the circular or irregular pipe. The entire adjustment mechanism, through the dual cooperation of angle control and mechanical locking, enables the clamping device to achieve compatibility and adaptation with pipes of different specifications within the stepless adjustment range. The entire process only requires a few steps to complete the custom setting of the pipe diameter parameters.

[0039] Furthermore, a basic fixing unit is constructed using the upper retaining ring 202 mounted on the top of the first connecting rod 203 and the lower retaining ring 207 mounted on the bottom of the second connecting rod 208. The two retaining rings have a first threaded hole 205 and a second threaded hole 206 pre-set on their circumferential surfaces, respectively. During installation, a standard screw 201 is used to pass through the two holes to achieve pre-positioning. After adjusting to the designed spacing, the matching self-locking nut 204 assembly is embedded in the extension end of the screw to achieve double locking. The significant feature of this connection system is that the retaining ring assembly can be moved along the axial guide rail during installation. The longitudinal stroke is precisely controlled by the engagement depth of the front thread mechanism. In the reverse disassembly process, the self-locking nut 204 must be loosened first to release the clamping force, and then the positioning screw 201 is removed in sequence to release the retaining ring from the constraint. Finally, the modular spacing adjustment mechanism is completely separated. This solution ensures that the entire process from assembly to disassembly can be completed in a few minutes through the standardized operation mode of forward locking and reverse decoupling. It fully meets the technical requirements of scenarios such as rapid equipment maintenance and component replacement, ensuring connection reliability and avoiding structural damage caused by excessive torque.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A large pipe rack pipe penetrating tool, comprising a base (1) and a fixing column (3), characterized in that: One end of the fixed column (3) is fixedly connected with the backstop (4), the outer wall of the backstop (4) is fixedly connected with the first telescopic rod (5), the outer wall top of the first telescopic rod (5) is fixedly connected with the support bar (7), the outer wall of the support bar (7) is fixedly connected with the spring (6), the outer wall top of the support bar (7) is fixedly connected with the fixed button (8), the outer wall of the support bar (7) is fixedly connected with the first cross bar (9), the outer wall of the first cross bar (9) is rotatably connected with the second cross bar (10), the outer wall of the second cross bar (10) is fixedly connected with the second telescopic rod (11), the outer wall of the second telescopic rod (11) is fixedly connected with the third telescopic rod (12), the outer wall top of the first cross bar (9) is fixedly connected with the second clamping block (17), the inside of the second clamping block (17) is slidably connected with the first clamping block (16), the outer wall top of the first clamping block (16) is fixedly connected with the clamping plate (15), the outer wall of the clamping plate (15) is threadedly connected with the threaded rod (13), the outer wall of the threaded rod (13) is threadedly connected with the screw knob (14), the outer wall top of the second telescopic rod (11) is fixedly connected with the front stop (27), the outer wall front side of the front stop (27) is provided with the quick release mechanism (2), and the quick release mechanism (2) is used for quickly disassembling the supporting structure.

2. A large pipe rack pipe threading tool according to claim 1, characterized in that: The quick release mechanism (2) comprises a first connecting rod (203) fixedly connected to the outer wall right side of the front stop (27), one end of the first connecting rod (203) is fixedly connected with an upper clasp (202), the outer wall of the upper clasp (202) is provided with a first threaded hole (205), the inner wall of the upper clasp (202) is threadedly connected with a screw (201), the outer wall of the screw (201) is threadedly connected with a nut (204), the outer wall of the screw (201) is threadedly connected with a lower clasp (207), the outer wall of the lower clasp (207) is provided with a second threaded hole (206), and the outer wall right side of the lower clasp (207) is fixedly connected with a second connecting rod (208).

3. The large pipe rack pipe threading tool of claim 1, wherein: The outer wall top of the machine base (1) is fixedly connected with a reinforcing frame (24), and the reinforcing frame (24) is made of alloy material.

4. A large pipe rack pipe threading tool according to claim 3, characterized in that: The outer wall top of the reinforcing frame (24) is fixedly connected with a motor (18), and one end of the motor (18) is fixedly connected with a bearing (19).

5. The large pipe rack pipe threading tool of claim 1, wherein: The outer wall top of the machine base (1) is fixedly connected with two guardrails (20), and the surface of the guardrail (20) is treated in a round and smooth manner.

6. A large pipe rack pipe threading tool as defined in claim 1, wherein: The outer wall top of the machine base (1) is fixedly connected with a support column (22), and the outer wall top of the support column (22) is fixedly connected with a handle (23).

7. A large pipe rack pipe threading tool as claimed in claim 1, wherein: The outer wall top of the machine base (1) is fixedly connected with a battery (21), and the battery (21) is electrically connected with the motor (18).

8. A large pipe rack pipe threading tool according to claim 1, characterized in that: A plurality of rotating wheels (25) are rotatably connected to the left and right sides of the outer wall of the machine base (1), and the outer wall of each rotating wheel (25) is provided with a texture (26).

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