Biological membrane winding equipment

Abstract

The invention discloses biological membrane winding equipment, and relates to the technical field of film winding, the biological membrane winding equipment comprises a biological membrane winding device body, the biological membrane winding device body comprises a lap joint conveying table, and an elastic winding mechanism is detachably mounted on the left side edge of the top of the lap joint conveying table; and a biological membrane low-temperature mechanism is detachably installed in the lap joint conveying table and comprises a low-temperature flow guide unit, and a sealed low-temperature cooling unit is fixedly connected to the output end of the low-temperature flow guide unit. A biological membrane penetrates through a lap joint fixing plate and a cooling box to be stored on the surface of a clamping rod, and a rotating device on the surface of the top of the lap joint fixing plate is matched to rotate a rotating rod, so that a semicircular anti-slip strip on the surface of the outer side of the rotating rod is driven to increase the friction force and the anti-slip force between the semicircular anti-slip strip and the surface of the biological membrane; and a hollow elastic strip on the outer side surface of the rotating rod is matched to elastically push the deformed soft strip.

Description

Technical Field

[0001] The invention relates to the technical field of film winding, and in particular to a biofilm winding device. Background Art

[0002] Biofilm, also translated as biofilm, is a structured community formed by some microbial cells surrounded by a polymer matrix (mainly polysaccharides) produced by themselves and attached to an inert or biological surface immersed in a liquid. The material receiving part of the winding equipment processing production line mechanically winds the raw materials into coils. It is widely used in paper rolls, cloth rolls, plastic rolls, and metal coil processing production lines. The design is diversified according to the actual process requirements. Common ones include simple winders and hydraulic winders. Winders generally have strict requirements on the inner diameter, outer diameter, thickness and width of the material.

[0003] For example, Chinese patent publication number: CN218707715U, a biofilm winding device, belongs to the field of biofilm technology, the biofilm winding device includes a connecting frame, a connecting groove is provided at the top of the connecting frame, and two filter frames are provided on the inner walls on both sides of the connecting groove; a second connecting plate, the second connecting plate is fixedly connected to the top of the connecting frame; a motor, the motor is fixedly connected to a transmission rod at one end of the connecting frame, and the transmission rod is provided with two, when the biofilm needs to be sheared.

[0004] The existing technology has the following problems: the existing biofilm is made of polysaccharide protein. When the film is rolled up, water vapor and dust will adhere to the surface of the film, so that after the film is rolled up, the water vapor inside will dilute and soften the biofilm. When rolling up, the biofilm will be deformed and broken due to the pulling force. Summary of the invention

[0005] The object of the present invention is to provide a biofilm winding device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A biofilm winding device comprises a biofilm winding device body, wherein the biofilm winding device body comprises an overlapping conveying platform, an elastic winding mechanism is detachably installed on the top left edge of the overlapping conveying platform, and a biofilm low-temperature mechanism is detachably installed inside the overlapping conveying platform.

[0007] The biofilm low temperature mechanism comprises a low temperature guide unit, the output end of which is fixedly connected with a sealed low temperature cooling unit, and the openings on both sides of the sealed low temperature cooling unit are provided with extrusion and pushing units.

[0008] A pushing and pulling unit is fixedly installed on the front and rear side surfaces of the overlapping conveying platform and located at the left edge position, and a clamping rotating unit is fixedly installed on one end of the pushing and pulling unit.

[0009] A further improvement of the technical solution of the present invention is that the low-temperature guide unit includes a liquid low-temperature cooler fixedly installed on the inner surface of the top of the overlapping conveyor platform, a guide shrink hose is fixedly connected to the output end of the liquid low-temperature cooler, and a return pipe is fixedly connected to the input end of the liquid low-temperature cooler, and the remaining cold air is recovered through the return pipe on the top surface of the cooling box for secondary utilization.

[0010] A further improvement of the technical solution of the present invention is that the sealed low-temperature cooling unit includes a cooling box connected to one end of the guide shrink hose, so as to guide it into the interior of the cooling box. As the gas is infused, a downward-pressing arc plate is fixedly connected to the top inner wall of the cooling box. When the swinging soft cloth is lifted, the biofilm is lifted and overlapped on the bottom surface of the downward-pressing arc plate. As the biofilm continues to slide, the biofilm is squeezed and the position is limited, thereby reducing the large vibration of the biofilm when it is blown. A swinging soft cloth is fixedly connected to the bottom inner wall of the cooling box, and a falling plate is fixedly connected to the bottom surface of the swinging soft cloth. Air holes are provided on the outer surfaces of the downward-pressing arc plate and the swinging soft cloth. The few air holes on the outer surface of the swinging soft cloth are used to reduce the infusion space of the cold air, thereby increasing the impact force of the cold air, so that the cold air increases the impact on the surface of the biofilm, blows the water vapor and impurities on the surface of the biofilm, cleans them up, and then discharges them through the openings on the two side surfaces of the cooling box.

[0011] A further improvement of the technical solution of the present invention is that the extrusion and pushing unit includes an overlapping fixing plate fixedly connected to the entrances of the two side surfaces of the cooling box, a rotator is fixedly installed on the top outer surface of the overlapping fixing plate, and a rotating rod is fixedly connected to the output end of the rotator, which cooperates with the rotator on the top surface of the overlapping fixing plate to rotate the rotating rod, and a hollow elastic strip is fixedly connected to the outer surface of the rotating rod, and a deformable soft strip is fixedly connected to the outer surface of the hollow elastic strip. When extrusion is performed, the deformable soft strip is elastically pushed in cooperation with the hollow elastic strip on the outer surface of the rotating rod, and the outer surface of the deformable soft strip is evenly covered with semicircular anti-slip strips, thereby driving the semicircular anti-slip strip on the outer surface of the rotating rod to increase the friction and anti-slip force between the semicircular anti-slip strip and the biofilm surface, thereby increasing the tight clamping force between the semicircular anti-slip strip and the biofilm surface, and increasing the pushing force.

[0012] A further improvement of the technical solution of the present invention is that the pushing and pulling unit includes a pusher fixedly connected to the front and rear surfaces of the overlapping conveying platform and fixedly installed on the left edge position, and empty grooves are opened on the front and rear surfaces of the overlapping conveying platform.

[0013] A further improvement of the technical solution of the present invention is that the locking rotation unit includes a locking rotator fixedly installed on one end of the pusher, which cooperates with the limiting chuck to limit the position of the biofilm, and cooperates with the pusher to push the locking rotator. The inner bottom surface of the empty groove is fixedly connected with an elastic wire arranged on the two side surfaces of the cooling box, and a pushing stripper is fixedly installed on the front and rear side surfaces of the overlapping conveying platform and on the right edge position of the pusher to detach the locking rotator from the surface of the locking rod, and then the surface of the locking rod is pushed by the pushing stripper. A overlapping limiting arm is movably sleeved on the left side surface of the overlapping conveying platform.

[0014] A further improvement of the technical solution of the present invention is that the elastic winding mechanism includes a clamping rod movably sleeved on the left edge position of the top of the overlapping conveyor platform, and the two sides of the clamping rod are movably sleeved on the output end of the clamping rotator, and the outer surface of the clamping rod is fixedly connected to a limiting chuck at the edge positions on both sides.

[0015] A further improvement of the technical solution of the present invention is that: a shrinkage column is fixedly connected to the outer surface of the clamping rod, which cooperates with the shrinkage column on the inner surface of the semicircular elastic anti-slip strip to elastically buffer the extrusion of the semicircular elastic anti-slip strip; a lap plate is fixedly connected to one end of the shrinkage column, and a semicircular elastic anti-slip strip is fixedly connected to one end of the lap plate, so that the biofilm is overlapped on the surface of the semicircular elastic anti-slip strip, and the clamping rod is rotated in cooperation with the clamping rotator, so that the biofilm is wrapped around the surface of the semicircular elastic anti-slip strip. When the biofilm is wrapped, a certain pulling force is generated, and the semicircular elastic anti-slip strip is cooperated to perform soft overlap on the biofilm.

[0016] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art: 1. The present invention provides a biofilm winding device, which passes the biofilm through the overlapping fixing plate and the cooling box and is stored on the surface of the clamping rod. The rotating rod is rotated in cooperation with the rotator on the top surface of the overlapping fixing plate, thereby driving the semicircular anti-skid strip on the outer surface of the rotating rod to increase the friction and anti-skid force between the biofilm surface and the semicircular anti-skid strip. When squeezing, the hollow elastic strip on the outer surface of the rotating rod is used to elastically push the deformed soft strip, thereby increasing the tight clamping force between the semicircular anti-skid strip and the biofilm surface and increasing the pushing force.

[0017] 2. The present invention provides a biofilm winding device, which cooperates with a liquid low-temperature cooler to infuse low-temperature cold air into the interior of the guide shrink hose, thereby guiding it into the interior of a cooling box. As the gas is infused, the bottom surface of the swinging soft cloth is pushed upward, and a small number of air holes on the outer surface of the swinging soft cloth are used to reduce the infusion space of the cold air, thereby increasing the impact force of the cold air, so that the cold air increases the impact on the surface of the biofilm, blows the water vapor and impurities on the surface of the biofilm, cleans them up, and then discharges them through the openings on the two side surfaces of the cooling box.

[0018] 3. The present invention provides a biofilm winding device, and when the swinging soft cloth is lifted, the biofilm will be lifted and overlapped on the bottom surface of the downward pressing arc plate. As the biofilm continues to slide, the biofilm is squeezed and the position is limited, thereby reducing the large vibration generated when the biofilm is blown, and then the remaining cold air is recovered through the reflux pipe on the top surface of the cooling box for secondary utilization.

[0019] 4. The present invention provides a biofilm rolling device, which overlaps the biofilm on the surface of a semicircular elastic anti-slip strip, and cooperates with a clamping rotator to rotate the clamping rod, so that the biofilm is wrapped around the surface of the semicircular elastic anti-slip strip. When the biofilm is wrapped, it will generate a certain pulling force, and cooperate with the semicircular elastic anti-slip strip to softly overlap the biofilm, and then cooperate with the contraction column on the inner surface of the semicircular elastic anti-slip strip to elastically buffer the extrusion of the semicircular elastic anti-slip strip, and cooperate with the limit chuck to limit the position of the biofilm.

[0020] 5. The present invention provides a biofilm winding device, which cooperates with a pusher to push the card-joining rotator to separate the card-joining rotator from the surface of the card-joining rod, and then pushes the surface of the card-joining rod by pushing the stripper to push and strip the card-joining rod from the surface of the overlapping conveying platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a partially enlarged three-dimensional structural schematic diagram of the overlapping conveying platform of the present invention; Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the overlapping conveying platform of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the biofilm low-temperature mechanism of the present invention; Figure 5 It is a schematic diagram of a cross-sectional three-dimensional structure of an overlapped fixing plate of the present invention; Figure 6 It is a schematic diagram of the cross-sectional three-dimensional structure of the cooling box of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the elastic winding mechanism of the present invention; Figure 8 It is a schematic diagram of a cross-sectional three-dimensional structure of the elastic winding mechanism of the present invention.

[0022] In the figure: 1, biofilm winding device body; 11, overlapping conveying platform; 12, empty slot; 13, elastic wire; 14, pusher; 15, clamping rotator; 16, overlapping limit arm; 17, push stripper; 2. Elastic winding mechanism; 21. Clamping rod; 22. Limiting chuck; 23. Shrinkage column; 24. Overlap plate; 25. Semicircular elastic anti-slip strip; 3. Biofilm cryogenic mechanism; 31. Liquid cryogenic cooler; 32. Flow diversion shrink hose; 33. Cooling box; 331. Swinging soft cloth; 332. Drop plate; 333. Pressing arc plate; 334. Ventilation hole; 34. Reflux pipe; 35. Overlap fixing plate; 351. Rotator; 352. Rotating rod; 353. Hollow elastic strip; 354. Deformable soft strip; 355. Semicircular anti-slip strip. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with embodiments: Example

[0024] like Figure 1-8 As shown, the present invention provides a biofilm winding device, the extrusion pushing unit includes an overlapping fixing plate 35 fixedly connected to the entrances of the surfaces of both sides of the cooling box 33, the biofilm passes through the overlapping fixing plate 35 and the cooling box 33 and is stored on the surface of the clamping rod 21, a rotator 351 is fixedly installed on the top outer surface of the overlapping fixing plate 35, and a rotating rod 352 is fixedly connected to the output end of the rotator 351, and the rotating rod 352 is rotated by cooperating with the rotator 351 on the top surface of the overlapping fixing plate 35, and a hollow spring is fixedly connected on the outer surface of the rotating rod 352 The outer surface of the hollow elastic force strip 353 is fixedly connected with a deformable soft strip 354. When squeezing, the hollow elastic force strip 353 on the outer surface of the rotating rod 352 elastically pushes the deformable soft strip 354. The outer surface of the deformable soft strip 354 is evenly covered with a semicircular anti-slip strip 355, thereby driving the semicircular anti-slip strip 355 on the outer surface of the rotating rod 352 to increase the friction and anti-slip force between the semicircular anti-slip strip 355 and the surface of the biofilm, thereby increasing the tight clamping force between the semicircular anti-slip strip 355 and the surface of the biofilm and increasing the pushing force. Example

[0025] like Figure 1-8As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the biofilm cryogenic mechanism 3 includes a cryogenic guide unit, a sealed cryogenic cooling unit is fixedly connected to the output end of the cryogenic guide unit, and extrusion pushing units are arranged at the openings on both sides of the sealed cryogenic cooling unit. The cryogenic guide unit includes a liquid cryogenic cooler 31 fixedly installed on the inner surface of the top of the overlapping conveying platform 11, and the liquid cryogenic cooler 31 cooperates to infuse low-temperature cold air into the interior of the guide shrink hose 32. The output end of the liquid cryogenic cooler 31 is fixedly connected to the guide shrink hose 32, and the input end of the liquid cryogenic cooler 31 is fixedly connected to the return pipe 34, and then the remaining cold air is recovered through the return pipe 34 on the top surface of the cooling box 33 for secondary utilization. The sealed cryogenic cooling unit includes a cooling box 33 connected to one end of the guide shrink hose 32, so as to guide it into the interior of the cooling box 33. As the gas is infused in, the cooling box 33 is fixedly connected to the inner wall of the top The bottom surface of the swinging soft cloth 331 is pushed upward, and a falling plate 332 is fixedly connected to the bottom surface of the swinging soft cloth 331. Air holes 334 are provided on the outer surfaces of the downward-pressing arc plate 333 and the swinging soft cloth 331. The few air holes 334 on the outer surface of the swinging soft cloth 331 are used to reduce the infusion space of cold air, thereby increasing the impact force of cold air, so that the cold air increases the impact on the surface of the biofilm, blows the water vapor and impurities on the surface of the biofilm, cleans them up, and then discharges them through the openings on the two side surfaces of the cooling box 33. Example

[0026] like Figure 1-8As shown, on the basis of Examples 1-2, the present invention provides a technical solution: preferably, it includes a biofilm winding device body 1, the biofilm winding device body 1 includes an overlapping conveying platform 11, an elastic winding mechanism 2 is detachably installed on the top left edge position of the overlapping conveying platform 11, a biofilm low-temperature mechanism 3 is detachably installed inside the overlapping conveying platform 11, a pushing and pulling unit is fixedly installed on the front and rear side surfaces of the overlapping conveying platform 11 and located at the left edge position, a card-connecting rotating unit is fixedly installed on one end of the pushing and pulling unit, and the pushing and pulling unit includes a fixed connection to the front and rear surfaces of the overlapping conveying platform 11 A pusher 14 is fixedly installed on the side surface and at the left edge position, and an empty groove 12 is opened on the front and rear surfaces of the overlapping conveying platform 11. The clamping rotation unit includes a clamping rotator 15 fixedly installed on one end of the pusher 14, which cooperates with the limiting chuck 22 to limit the position of the biofilm, and cooperates with the pusher 14 to push the clamping rotator 15. The inner bottom surface of the empty groove 12 is fixedly connected with an elastic wire 13 arranged on the two side surfaces of the cooling box 33. A pushing stripper 17 is fixedly installed on the front and rear side surfaces of the overlapping conveying platform 11 and at the right edge position of the pusher 14. The clamping rotator is fixedly installed on the front and rear side surfaces of the overlapping conveying platform 11. 15 is detached from the surface of the clamping rod 21, and then the surface of the clamping rod 21 is pushed by pushing the stripper 17. The left surface of the overlapping conveying platform 11 is movably sleeved with an overlapping limit arm 16. The elastic winding mechanism 2 includes a clamping rod 21 movably sleeved on the left edge position of the top of the overlapping conveying platform 11, and the clamping rod 21 is pushed and peeled off from the surface of the overlapping conveying platform 11. The two sides of the clamping rod 21 are movably sleeved on the output end of the clamping rotator 15. The outer surface of the clamping rod 21 is fixedly connected to the limit clamping disc 22 at the edge positions on both sides. The outer surface of the clamping rod 21 is fixedly connected There is a shrinkage column 23, which cooperates with the shrinkage column 23 on the inner surface of the semicircular elastic anti-slip strip 25 to elastically buffer the extrusion of the semicircular elastic anti-slip strip 25. A lap plate 24 is fixedly connected to one end of the shrinkage column 23, and a semicircular elastic anti-slip strip 25 is fixedly connected to one end of the lap plate 24. The biofilm is overlapped on the surface of the semicircular elastic anti-slip strip 25, and the clamping rod 21 is rotated in cooperation with the clamping rotator 15, so that the biofilm is wrapped around the surface of the semicircular elastic anti-slip strip 25. When the biofilm is wrapped, a certain pulling force will be generated, and the semicircular elastic anti-slip strip 25 is cooperated to perform soft overlap on the biofilm.

[0027] The following is a detailed description of the working principle of the biofilm winding equipment.

[0028] like Figure 1-8As shown, the biofilm is passed through the overlapping fixing plate 35 and the cooling box 33 and stored on the surface of the clamping rod 21, and the rotating rod 352 is rotated by the rotator 351 on the top surface of the overlapping fixing plate 35, thereby driving the semicircular anti-skid strip 355 on the outer surface of the rotating rod 352 to increase the friction and anti-skid force between the biofilm surface and the semicircular anti-skid strip 355. When squeezing, the hollow elastic strip 353 on the outer surface of the rotating rod 352 elastically pushes the deformable soft strip 354, thereby increasing the tight clamping force between the semicircular anti-skid strip 355 and the biofilm surface, increasing the pushing force, and cooperating with the liquid The low temperature cooler 31 infuses low temperature cold air into the inside of the guide shrink hose 32, thereby guiding it into the inside of the cooling box 33. As the gas is infused, the bottom surface of the swinging soft cloth 331 is pushed upward, and a small number of air holes 334 on the outer surface of the swinging soft cloth 331 are used to reduce the infusion space of the cold air, thereby increasing the impact force of the cold air, so that the cold air increases the impact on the surface of the biofilm, blows the water vapor and impurities on the surface of the biofilm, cleans them up, and then discharges them through the openings on the two side surfaces of the cooling box 33. When the cloth 331 is lifted, the biofilm will be lifted and overlapped on the bottom surface of the downward pressing arc plate 333. As the biofilm continues to slide, the biofilm is squeezed and the position is limited, which reduces the large vibration of the biofilm when it is blown. The remaining cold air is recovered through the return pipe 34 on the top surface of the cooling box 33 for secondary use, and the biofilm is overlapped on the surface of the semicircular elastic anti-slip strip 25. The clamping rotator 15 is used to rotate the clamping rod 21, so that the biofilm is wrapped around the surface of the semicircular elastic anti-slip strip 25. The biofilm is When wrapping, a certain pulling force will be generated, and the semicircular elastic anti-slip strip 25 is used to softly overlap the biofilm, and then the contraction column 23 on the inner surface of the semicircular elastic anti-slip strip 25 is used to elastically buffer the extrusion of the semicircular elastic anti-slip strip 25, and the limit chuck 22 is used to limit the position of the biofilm, and the pusher 14 is used to push the card-joining rotator 15 to separate the card-joining rotator 15 from the surface of the card-joining rod 21, and then the stripper 17 is used to push the surface of the card-joining rod 21 to push and peel off the card-joining rod 21 from the surface of the overlapping conveying platform 11.

[0029] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A biofilm winding device, suitable for low temperature control, winding and storage of biofilm, comprising a biofilm winding device body (1), wherein the biofilm winding device body (1) comprises an overlapping conveying platform (11), characterized in that: An elastic winding mechanism (2) is detachably mounted on the left edge of the top of the overlapping conveying platform (11), and a biofilm low-temperature mechanism (3) is detachably mounted inside the overlapping conveying platform (11); The biofilm cryogenic mechanism (3) comprises a cryogenic guide unit, the output end of the cryogenic guide unit is fixedly connected to a sealed cryogenic cooling unit, and the two side openings of the sealed cryogenic cooling unit are provided with extrusion and pushing units; A pushing and pulling unit is fixedly mounted on the front and rear side surfaces of the overlapping conveying platform (11) and located at the left edge position, and a clamping rotating unit is fixedly mounted on one end of the pushing and pulling unit.

2. A biofilm winding device according to claim 1, characterized in that: The low-temperature flow guiding unit comprises a liquid low-temperature cooler (31) fixedly mounted on the inner surface of the top of the overlapping conveying platform (11), a flow guiding shrink hose (32) fixedly connected to the output end of the liquid low-temperature cooler (31), and a return pipe (34) fixedly connected to the input end of the liquid low-temperature cooler (31).

3. A biofilm winding device according to claim 2, characterized in that: The sealed low-temperature cooling unit comprises a cooling box (33) connected to one end of a flow-guiding shrink hose (32); a downward pressing arc plate (333) is fixedly connected to the inner wall surface of the top of the cooling box (33); a swinging soft cloth (331) is fixedly connected to the inner wall surface of the bottom of the cooling box (33); a drop plate (332) is fixedly connected to the bottom surface of the swinging soft cloth (331); and air holes (334) are provided on the outer surfaces of the downward pressing arc plate (333) and the swinging soft cloth (331).

4. A biofilm winding device according to claim 3, characterized in that: The extrusion pushing unit comprises an overlapping fixing plate (35) fixedly connected to the entrances of the two side surfaces of the cooling box (33); a rotator (351) is fixedly installed on the top outer surface of the overlapping fixing plate (35); a rotating rod (352) is fixedly connected to the output end of the rotator (351); a hollow elastic strip (353) is fixedly connected to the outer surface of the rotating rod (352); a deformable soft strip (354) is fixedly connected to the outer surface of the hollow elastic strip (353); and a semicircular anti-slip strip (355) is evenly covered and connected to the outer surface of the deformable soft strip (354).

5. The biofilm winding device according to claim 1, characterized in that: The pushing and pulling unit comprises a pusher (14) fixedly connected to the front and rear surfaces of the overlapping conveying platform (11) and fixedly installed at the left edge position, and the front and rear surfaces of the overlapping conveying platform (11) are provided with empty grooves (12).

6. A biofilm winding device according to claim 5, characterized in that: The engaging and rotating unit comprises an engaging and rotating device (15) fixedly mounted on one end of a pusher (14); an elastic wire (13) arranged on the two side surfaces of a cooling box (33) is fixedly connected to the inner bottom surface of the empty slot (12); a pushing and stripping device (17) is fixedly mounted on the front and rear side surfaces of the overlapping conveying platform (11) and located at the right side edge of the pusher (14); and an overlapping limiting arm (16) is movably sleeved on the left side surface of the overlapping conveying platform (11).

7. The biofilm winding device according to claim 1, characterized in that: The elastic winding mechanism (2) comprises a clamping rod (21) movably sleeved on the left edge position of the top of the overlapping conveying platform (11), and the two sides of the clamping rod (21) are movably sleeved on the output end of the clamping rotator (15), and the outer surface of the clamping rod (21) is fixedly connected to the limiting clamping disc (22) at the edge positions on both sides.

8. The biofilm winding device according to claim 7, characterized in that: A contraction column (23) is fixedly connected to the outer surface of the clamping rod (21), a lap plate (24) is fixedly connected to one end of the contraction column (23), and a semicircular elastic anti-slip strip (25) is fixedly connected to one end of the lap plate (24).

Images