Quick butt joint structure for hole network pipe and use method thereof

Abstract

The invention provides a rapid butt joint structure for a hole network pipe and a use method of the rapid butt joint structure, and relates to the technical field of hole network pipe production equipment. The device comprises fixed discs, positioning connecting units and a movable triggering unit, the positioning connecting units are movably connected with the fixed discs, and the two ends of the movable triggering unit are movably connected with the fixed discs and the positioning connecting units corresponding to the fixed discs respectively. The two fixing discs are placed on the inner side of the tail end of the steel mesh located on one side of the traction machine and the inner side of the head end of the steel mesh located on one side of the machine head correspondingly, and the movable triggering units can trigger the positioning connecting units when axially moving relative to the fixing discs so that the positioning connecting units can be in positioning connection with the corresponding steel meshes. According to the rapid butt joint structure, welding-free rapid connection of the steel frameworks on the two sides can be achieved in the starting-up stage, a mechanical interlocking type connection mode is formed, welding defects are eliminated, the reject ratio of products is effectively reduced, and production continuity, product quality and production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hole net pipe production equipment, in particular to a quick butt joint structure for hole net pipe in the production start-up stage and a use method thereof, aiming to realize the welding-free quick connection of hole net pipe in the start-up traction stage and improve the production efficiency and product quality. BACKGROUND

[0002] The metal hole net framework polyethylene composite pipe is formed by extrusion molding and continuous compounding with high-density polyethylene as the matrix and a mesh steel pipe welded and formed by punching and cold rolling of a steel strip as the reinforcing framework. In the production process of the metal hole net framework polyethylene composite pipe, the connection between the steel framework conveyed on one side of the traction machine and the steel framework on one side of the machine head in the start-up stage is a key link to ensure the continuity of production.

[0003] The traditional process usually adopts a welding method to connect the steel frameworks on both sides. However, since the thickness of the steel plate used for the steel framework is usually in the range of 0.3-1.4 mm, which belongs to thin plate welding, the welding technology is extremely high, and defects such as welding protrusions, incomplete fusion, and burn-through are extremely easy to occur in the welding process. The welding protrusions not only destroy the flatness of the welding position, but also exacerbate the wear and damage of the sizing sleeve when the steel framework with welding protrusions enters the sizing sleeve. Moreover, the welding residues accumulated will interfere with the normal work of the sizing sleeve, resulting in a decrease in product quality and production efficiency, and seriously restricting the production benefit of the metal hole net framework polyethylene composite pipe. Therefore, there is an urgent need for an efficient and stable welding-free connection technology to solve the above problems. SUMMARY

[0004] The present application aims to provide a quick butt joint structure for hole net pipe and a use method thereof to solve the technical problems existing in the prior art. The preferred technical solutions in the many technical solutions provided by the present application can produce many technical effects, which are described in detail below.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: A quick butt joint structure for hole net pipe, comprising a fixed disc, a positioning connection unit, and a movable trigger unit, the positioning connection unit is movably connected with the fixed disc, and the movable trigger unit is movably connected with one fixed disc and the corresponding positioning connection unit of the fixed disc at both ends, the two fixed discs are respectively placed on the inner side of the steel net end on one side of the traction machine and the inner side of the steel net head on one side of the machine head, and the movable trigger unit can trigger the positioning connection unit to form a positioning connection between the positioning connection unit and the corresponding steel net when moving axially relative to the fixed disc.

[0006] Preferably, the fixed disc is provided with a radial auxiliary moving part in the radial direction, the positioning connecting unit is movably connected with the radial auxiliary moving part and can move relative to the radial auxiliary moving part, and the fixed disc is provided with an axial auxiliary moving part in the axial direction, the movable trigger unit is movably connected with the axial auxiliary moving part and can move relative to the axial auxiliary moving part.

[0007] Preferably, the fixed disc comprises two detachably connected circular disc bodies, the outer diameter of the circular disc bodies is smaller than the inner diameter of the steel mesh, the radial auxiliary moving part comprises a moving groove and a radial moving hole, a plurality of moving grooves are formed on the two circular disc bodies in the circumferential direction, and the radial moving hole is formed through the two circular disc bodies at both ends of each moving groove in the radial direction. The positioning connecting unit comprises a positioning pin and a return spring, the return spring is sleeved on the outer side of the positioning pin and located in the moving groove, the two ends of the positioning pin respectively pass through the two ends of the radial moving hole, one end of the inner side of the positioning pin can be movably connected with the movable trigger unit, and one end of the outer side of the positioning pin can form a positioning connection with the steel mesh.

[0008] Preferably, the axial auxiliary moving part comprises an axial moving hole, the axial moving hole is formed on the two circular disc bodies in the axial direction, and the movable trigger unit is movably connected with the axial moving hole.

[0009] Preferably, the movable trigger unit comprises a tensioning mandrel and a center connecting rod, the two ends of the center connecting rod are respectively connected with one tensioning mandrel, the tensioning mandrel is movably connected with the axial moving hole, and a plurality of inclined taper surfaces and step surfaces are sequentially and alternately arranged on the outer wall of the tensioning mandrel and in sliding contact with one end of the inner side of the positioning pin through the inclined taper surfaces and the step surfaces.

[0010] Preferably, the movable trigger unit further comprises a mandrel flange table, the mandrel flange table is connected with one end of the tensioning mandrel away from the center connecting rod, and the outer diameter of the mandrel flange table is greater than the hole diameter of the axial moving hole.

[0011] Preferably, one end of the outer side of the positioning pin is a bullet-shaped taper surface, and the half-cone angle formed by the bullet-shaped taper surface ranges from 10° to 15°.

[0012] Preferably, a weight-reducing part is arranged on the two circular disc bodies, and the weight-reducing part is uniformly distributed in the circumferential direction of the circular disc bodies.

[0013] Preferably, the adjusting rod is detachably connected with the circular disc body, and pulling the adjusting rod can drive the fixed disc to rotate.

[0014] A method for using a quick docking structure of a hole screen pipe, comprising the following steps: S1. Placing two fixed discs on the inner side of the end of the steel mesh on the side of the traction machine and the inner side of the head of the steel mesh on the side of the machine head respectively; S2. Connecting at least one adjusting rod on the side of each fixed disc close to the other fixed disc, rotating the adjusting rod to drive the fixed disc to rotate, adjusting the position of the corresponding positioning pin on the fixed disc, so that the bullet head cone surface of the positioning pin corresponds to the punching hole on the steel mesh; S3. Pushing the movable trigger unit by external force, selecting the fixed disc on the side of the traction machine, so that the inclined cone surface of the expansion core shaft extrudes the positioning pin, so that the positioning pin expands outward along the radial direction of the fixed disc to guide the bullet head cone surface of the positioning pin into the punching hole on the steel mesh, realizing mechanical interlocking; S4. Repeat step S3 to complete the mechanical interlocking of the positioning pin on the fixed disc on the other side and the punching hole on the steel mesh; S5. The traction machine is started, sequentially driving the steel mesh on the side of the traction machine, the quick docking structure and the steel mesh on the side of the machine head to move synchronously, after moving to the position, the movable trigger unit is pushed by external force, so that the inclined cone surface of the expansion core shaft no longer extrudes the positioning pin, and the reset spring rebounds to drive the positioning pin to shrink along the radial direction of the fixed disc to the center, completing the reset.

[0015] The quick docking structure can realize the quick and stable connection of the steel skeletons on both sides without welding in the starting stage, the mechanical interlocking type connection form replaces the traditional welding mode, completely eliminates welding defects such as welding bumps, incomplete fusion and burning through, avoids the damage of the welding bumps to the sizing sleeve and the welding residual accumulation problem, greatly prolongs the service life of the sizing sleeve, effectively reduces the product failure rate, and improves the continuity of production, product quality and production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0017] Figure 1 It is a front view of the sectional structure of the present application; Figure 2 It is a side view of the sectional structure of the fixed disc and the positioning connection unit of the present application; Figure 3 It is a front view of the sectional structure of the fixed disc and the positioning connection unit of the present application; Figure 4It is a side view structure diagram of the fixed disc of the application; Figure 5 It is a side view structure diagram of the fixed disc provided with a weight-reducing part and the positioning connecting unit of the application; In the figure, 1 is a fixed disc; 11 is a circular disc body; 111 is an operation connecting hole; 12 is a moving groove body; 13 is a radial moving hole; 14 is an axial moving hole; 15 is a weight-reducing part; 2 is a positioning connecting unit; 21 is a positioning pin; 22 is a reset spring; 3 is a movable trigger unit; 31 is a tensioning mandrel; 32 is a center connecting rod; 33 is a mandrel flange table; 4 is a steel mesh; 5 is an adjusting rod. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the application clearer, the technical scheme of the application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the application. In the description of the application, it should be understood that the orientation or positional relationship indicated by the terms "center", "lateral", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side" and the like is based on the drawings provided in the description and is only for the purpose of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. Figure 1 The orientation or positional relationship shown is only for the purpose of describing the application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0019] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0020] Referring to Figures 1 to 5 The application provides a quick docking structure for a hole net pipe, which comprises a fixed disc 1, a positioning connecting unit 2 and a movable trigger unit 3. The number of fixed discs 1 is two, and each fixed disc 1 movably connects the positioning connecting unit 2, and the positioning connecting unit 2 can move radially relative to the fixed disc 1; Two ends of the activity trigger unit 3 are respectively connected with a fixed disc 1, the activity trigger unit 3 can move axially relative to the fixed disc 1, and the activity trigger unit 3 is connected with the positioning connection unit 2 corresponding to the activity connection on the fixed disc 1, the activity trigger unit 3 can drive the positioning connection unit 2 to move radially relative to the fixed disc 1 while moving axially relative to the fixed disc 1; Two fixed discs 1 are respectively placed on the inner side of the end of the steel mesh 4 on the side of the traction machine and the inner side of the head of the steel mesh 4 on the side of the machine head. In actual application, when the activity trigger unit 3 moves axially relative to the fixed disc 1, the positioning connection unit 2 can be triggered, and the positioning connection unit 2 is driven to move radially relative to the fixed disc 1, so that the positioning connection unit 2 forms a positioning connection with the corresponding steel mesh 4, and the positioning connection is in the form of mechanical interlocking.

[0021] The quick docking structure can realize quick and stable connection of the two steel frameworks without welding in the starting stage, and the mechanical interlocking connection form is used to replace the traditional welding mode, so that welding defects such as welding protrusions, incomplete fusion and burning through are completely eliminated, the damage of the welding protrusions to the sizing sleeve and the welding residual accumulation problem are avoided, the service life of the sizing sleeve is greatly prolonged, the product failure rate is effectively reduced, and the continuity of production, product quality and production efficiency are improved.

[0022] As an optional implementation, the fixed disc 1 is provided with a radial auxiliary moving part in the radial direction, the positioning connection unit 2 is connected with the radial auxiliary moving part and can move relative to the radial auxiliary moving part, and the fixed disc 1 is provided with an axial auxiliary moving part in the axial direction, the activity trigger unit 3 is connected with the axial auxiliary moving part and can move relative to the axial auxiliary moving part.

[0023] As an optional implementation, the fixed disc 1 includes two annular disc bodies 11 connected in a detachable manner, and the connection is preferably bolt connection, which can be connected by a plurality of bolts in the circumferential direction, so as to ensure the overall rigidity after splicing, resist deformation under various forces in the traction process, and prolong the service life of the connection structure.

[0024] The outer diameter of the annular disc body 11 is smaller than the inner diameter of the steel mesh 4, so as to reserve space for movement of the positioning pin 21 and sleeving of the steel framework, and the annular disc body 11 can be smoothly placed inside the steel mesh 4.

[0025] The radial auxiliary moving part includes a moving groove body 12 and a radial moving hole 13, a plurality of moving groove bodies 12 are jointly provided in the circumferential direction of the two annular disc bodies 11, and the radial moving hole 13 is jointly and penetratively provided at both ends of each moving groove body 12 in the radial direction of the two annular disc bodies 11, and the moving groove body 12 and the radial moving hole 13 can provide radial guidance for the positioning pin 21.

[0026] In this embodiment, the number of radial auxiliary moving parts is not less than six groups, which can be flexibly selected according to actual use requirements, and a uniform distribution setting method is adopted, and the actual setting position of the radial auxiliary moving part can be calculated and distributed according to the punching circumferential pitch of the steel mesh 4.

[0027] The positioning connecting unit 2 comprises a positioning pin 21 and a reset spring 22, both ends of the positioning pin 21 pass through both ends of the radial moving hole 13 respectively, and the inner side of one end of the positioning pin 21 can be movably connected with the movable trigger unit 3, and the outer side of the other end of the positioning pin 21 can form a positioning connection with the steel mesh 4.

[0028] The positioning pin 21 can be assembled into the radial auxiliary moving part of the fixed disc 1 in a sliding fit manner, and can slide along the radial direction of the fixed disc 1.

[0029] The outer side of the positioning pin 21 is a bullet-shaped conical surface, the half-cone angle formed by the bullet-shaped conical surface is in the range of 10°-15°, so as to facilitate the accurate introduction of the punching of the steel mesh 4, and the maximum diameter of the head of the positioning pin 21 does not exceed the minimum diameter of the punching of the steel mesh 4, so as to ensure smooth insertion.

[0030] The positioning pin 21 has a self-guiding function, even if there is a certain degree of coaxial deviation between the fixed disc 1 and the steel mesh 4, it can still be smoothly inserted and aligned, the positioning is accurate and reliable, the assembly success rate is high, far exceeding the success rate of traditional welding, and the assembly efficiency is greatly improved.

[0031] In this embodiment, the height of the positioning pin 21 outwardly bulging is preferably not greater than the plastic thickness of the outer surface of the pipe, so that in the subsequent polyethylene composite process, the plastic on the outer surface can remain intact and will not be damaged.

[0032] The reset spring 22 is sleeved on the outer side of the positioning pin 21 and located in the moving groove 12, one end of the reset spring 22 abuts against the stepped surface of the moving groove 12, and the other end abuts against the annular boss on the positioning pin 21, and the reset spring 22 can provide a reset force for the positioning pin 21, and after the tensioning is completed, the positioning pin 21 is driven to retract and reset, preparing for the next connection.

[0033] In this embodiment, the two annular disc bodies 11 are provided with a weight reduction part 15, and the weight reduction part 15 is uniformly distributed along the circumferential direction of the annular disc body 11, which can reduce the weight of the fixed disc 1 without affecting the overall structural strength of the fixed disc 1, and is more convenient for operators to operate, saves physical strength, and also reduces the manufacturing cost of the fixed disc 1.

[0034] As an optional implementation, the axial auxiliary moving part comprises an axial moving hole 14, and the two annular disc bodies 11 are provided with the axial moving hole 14 along the axial direction, and the movable trigger unit 3 is movably connected with the axial moving hole 14.

[0035] As an optional implementation, the movable triggering unit 3 comprises a tensioning mandrel 31 and a central connecting rod 32.

[0036] The two ends of the central connecting rod 32 are connected with one tensioning mandrel 31 respectively, and the connection is preferably a threaded connection. The central connecting rod 32 is preferably a high-strength steel rod plated with chromium on the surface. The function of the central connecting rod 32 is to transmit the traction force and ensure the coaxiality of the mechanism, and to synchronize the movement of the tensioning mandrel 31 and the fixed disc 1.

[0037] The tensioning mandrel 31 is arranged in the central hole of the fixed disc 1 coaxially with the fixed disc 1, so that the tensioning mandrel 31 can be movably connected with the axial movement hole 14.

[0038] The tensioning mandrel 31 is a stepped taper shaft structure. A plurality of inclined taper surfaces and stepped surfaces are arranged on the outer wall of the tensioning mandrel 31 in turn. The inclined taper surfaces and stepped surfaces are adapted to the bullet-shaped taper surface of the positioning pin 21 and are in sliding contact with the inner side of the positioning pin 21 through the inclined taper surfaces and stepped surfaces, so as to convert the axial movement of the tensioning mandrel 31 into the radial expansion or contraction movement of the positioning pin 21.

[0039] The tensioning mandrel 31 is provided with a cylindrical guide section at both ends, which is in H7 / g6 sliding fit with the central hole of the fixed disc 1, so as to ensure the straightness of the axial movement.

[0040] In this embodiment, through the close contact of the mandrel flange table 33 and the fixed disc 1, combined with the linkage action of the central connecting rod 32, an efficient force transmission path is constructed, the traction force transmission loss is ≤5%, and the synchronization and stability of the steel mesh 4 in the traction process are ensured, and the deformation or connection failure of the steel skeleton caused by uneven force transmission is avoided.

[0041] As an optional implementation, the movable triggering unit 3 further comprises a mandrel flange table 33 connected with one end of the tensioning mandrel 31 away from the central connecting rod 32. The outer diameter of the mandrel flange table 33 is greater than the hole diameter of the axial movement hole 14. The mandrel flange table 33 can be in contact with the surface of the fixed disc 1, so as to transmit the axial force and limit the excessive movement of the tensioning mandrel 31, and ensure the stability of the force transmission path.

[0042] As an optional implementation, the adjusting rod 5 is detachably connected with the circular disc body 11, preferably, an operation connecting hole 111 is formed on the circular disc body 11, and the adjusting rod 5 is connected with the operation connecting hole 111, after the adjusting rod 5 is connected, the adjusting rod 5 can drive the fixing disc 1 to rotate relatively, so that the positioning pin 21 on the fixing disc 1 is aligned with the punched hole on the steel mesh 4, which is beneficial to the quick butt joint of the positioning pin 21 and the steel mesh 4, and reduces the damage to the structure, the positioning pin 21 can also compensate for the deviation within 0.3 mm by using the self-guiding function, the use of the adjusting rod 5 can make the operation convenient, reduce the labor intensity of the operator, simplify the operation process, reduce the operation difficulty, and improve the work efficiency.

[0043] In addition to using the adjusting rod 5, the operator can also directly drive the fixing disc 1 to rotate by hand, and the alignment of the positioning pin 21 and the punched hole on the steel mesh 4 can also be realized.

[0044] The steel mesh 4 mentioned in the embodiment is preferably a cold-rolled steel strip with uniformly distributed punched holes, and the punched hole spacing can be matched with the distribution of the positioning pin 21, as a composite pipe reinforcing framework, the steel mesh 4 can realize non-welded butt joint through the positioning pin 21 and transmit the traction tension.

[0045] In the embodiment, by adjusting the number, distribution and diameter of the fixing disc 1 and other parameters of the positioning pin 21, the production of mesh pipe of different specifications (such as steel strip inner diameter φ50-φ315mm) can be adapted, without frequent replacement of equipment, and the flexibility and universality of production are improved.

[0046] The application also provides a use method of the quick butt joint structure for the mesh pipe, comprising the following steps: S1. Two fixing discs 1 are respectively placed on the inner side of the steel mesh 4 at the end of the traction machine and on the inner side of the steel mesh 4 at the head end of the machine head.

[0047] S2. At least one adjusting rod 5 is connected on the side of each fixing disc 1 close to the other fixing disc 1, the adjusting rod 5 drives the fixing disc 1 to rotate, the position of the corresponding positioning pin 21 on the fixing disc 1 is adjusted, and the bullet head cone surface of the positioning pin 21 is matched with the punched hole on the steel mesh 4.

[0048] Since the bullet head cone surface of the positioning pin 21 has a self-guiding feature, even if the coaxial deviation between the fixing disc 1 and the steel mesh 4 is not more than 0.5 mm, the positioning pin 21 can still be aligned with the punched hole smoothly, the alignment difficulty is effectively reduced, and the alignment error is controlled within 0.2 mm.

[0049] S3. The external force pushes the movable trigger unit 3, selects the fixed disc 1 located on the side of the traction machine, tightens the center connecting rod 32, drives the tensioning mandrel 31 to move along the axial direction, makes the inclined taper surface of the tensioning mandrel 31 extrude the positioning pin 21, makes the positioning pin 21 overcome the elastic force of the reset spring 22 and expand outward along the radial direction of the fixed disc 1, guides the bullet-shaped taper surface of the positioning pin 21 into the punched hole on the steel mesh 4, and realizes mechanical interlocking.

[0050] S4. Repeat step S3 to complete the mechanical interlocking of the positioning pin 21 on the fixed disc 1 on the other side and the punched hole on the steel mesh 4.

[0051] S5. The traction machine starts, sequentially drives the steel mesh 4 located on the side of the traction machine, the quick docking structure and the steel mesh 4 located on the side of the machine head to move synchronously, and in the moving process, the force on the side of the traction machine can be transmitted through the steel mesh 4, the positioning pin 21, the fixed disc 1, the mandrel flange table 33, the tensioning mandrel 31 and the center connecting rod 32 in sequence, the force on the side of the machine head can be transmitted through the center connecting rod 32, the tensioning mandrel 31, the mandrel flange table 33, the fixed disc 1, the positioning pin 21 and the steel mesh 4 in sequence, and after moving to the position, the external force pushes the movable trigger unit 3, so that the inclined taper surface of the tensioning mandrel 31 no longer extrudes the positioning pin 21, the reset spring 22 rebounds to drive the positioning pin 21 to shrink along the radial direction of the fixed disc 1 to the center, and the reset is completed, preparing for the next connection.

[0052] After resetting, the quick docking structure can be removed, at this time, the center connecting rod 32 can be preferably set as two coaxially connected sub-rods, the two sub-rods are detachably connected at the center through bolts, when it is necessary to remove, the connection between the two sub-rods can be removed, so that each side of the mandrel flange table 33, the tensioning mandrel 31 and the sub-rod have the ability to move freely, thereby realizing quick separation from the fixed disc 1 and realizing quick removal.

[0053] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A quick docking structure for a hole screen pipe, characterized in that, The utility model relates to a kind of steel mesh positioning device, including fixed disc (1), positioning connecting unit (2) and movable trigger unit (3), the positioning connecting unit (2) is movably connected with the fixed disc (1), the two ends of the movable trigger unit (3) are movably connected with one of the fixed disc (1) and the positioning connecting unit (2) corresponding to the fixed disc (1), two fixed discs (1) are placed respectively at the inner side of the end of steel mesh (4) on the side of traction machine and the inner side of the head of steel mesh (4) on the side of machine head, the positioning connecting unit (2) can be triggered when movable trigger unit (3) moves axially relative to fixed disc (1) to make the positioning connecting unit (2) form positioning connection with corresponding steel mesh (4).

2. The quick docking structure for a hole screen pipe according to claim 1, characterized in that, The fixed disc (1) is provided with a radial auxiliary moving part in the radial direction, the positioning connecting unit (2) is movably connected with the radial auxiliary moving part and can move relative to the radial auxiliary moving part, and the fixed disc (1) is provided with an axial auxiliary moving part in the axial direction, the movable trigger unit (3) is movably connected with the axial auxiliary moving part and can move relative to the axial auxiliary moving part.

3. The quick docking structure for a hole screen pipe according to claim 2, characterized in that, The fixed disc (1) includes two detachably connected circular ring disc bodies (11), the outer diameter of the circular ring disc body (11) is smaller than the inner diameter of the steel mesh (4), the radial auxiliary moving part includes a moving groove body (12) and a radial moving hole (13), and the two circular ring disc bodies (11) are jointly provided with a plurality of moving groove bodies (12) in the circumferential direction, and the two circular ring disc bodies (11) are jointly and perforatedly provided with the radial moving hole (13) at both ends in the radial direction of each moving groove body (12). The positioning connecting unit (2) includes a positioning pin (21) and a return spring (22), the return spring (22) is sleeved on the outside of the positioning pin (21) and located in the moving groove body (12), the two ends of the positioning pin (21) pass through the two ends of the radial moving hole (13) respectively, one end of the inside of the positioning pin (21) can be movably connected with the movable trigger unit (3), and one end of the outside of the positioning pin (21) can form positioning connection with the steel mesh (4).

4. The quick docking structure for a hole screen pipe according to claim 3, characterized in that, The axial auxiliary moving part includes an axial moving hole (14), and the two circular ring disc bodies (11) are jointly provided with the axial moving hole (14) in the axial direction, and the movable trigger unit (3) is movably connected with the axial moving hole (14).

5. The quick docking structure for a hole screen pipe according to claim 4, characterized in that, The movable trigger unit (3) includes a tensioning mandrel (31) and a center connecting rod (32), the two ends of the center connecting rod (32) are connected with one of the tensioning mandrel (31) respectively, the tensioning mandrel (31) is movably connected with the axial moving hole (14), and a plurality of inclined taper surfaces and step surfaces are sequentially and alternately arranged on the outer wall of the tensioning mandrel (31) and slidably contact one end of the inside of the positioning pin (21) through the inclined taper surfaces and the step surfaces.

6. The quick docking structure for a hole screen pipe according to claim 5, characterized in that, The movable trigger unit (3) further comprises a mandrel flange table (33) connected to one end of the tensioning mandrel (31) away from the central connecting rod (32), and the outer diameter of the mandrel flange table (33) is greater than the hole diameter of the axial movement hole (14).

7. The quick docking structure for a hole screen pipe according to claim 3, wherein, The outer end of the positioning pin (21) is a bullet-shaped taper, and the half-taper angle formed by the bullet-shaped taper ranges from 10° to 15°.

8. The quick docking structure for a hole screen pipe according to claim 3, wherein, The two annular disc bodies (11) are provided with a weight-reducing portion (15) in common, which is uniformly distributed along the circumference of the annular disc body (11).

9. The quick docking structure for a hole screen pipe according to claim 3, wherein, Further comprising an adjusting rod (5) which is detachably connected with the annular disc body (11), and pulling the adjusting rod (5) can drive the fixed disc (1) to rotate relatively.

10. A method of using a quick docking structure for a cell netting tube, characterized by, The method comprises the following steps: S1. Two fixed discs (1) are respectively placed on the inner side of the end of the steel mesh (4) on the side of the traction machine and on the inner side of the head of the steel mesh (4) on the side of the machine head; S2. At least one adjusting rod (5) is connected to each fixed disc (1) on the side close to the other fixed disc (1), the adjusting rod (5) is rotated to drive the fixed disc (1) to rotate, the position of the corresponding positioning pin (21) on the fixed disc (1) is adjusted, and the bullet-shaped taper of the positioning pin (21) is correspondingly formed with the punching hole on the steel mesh (4); S3. An external force pushes the movable trigger unit (3), a selected fixed disc (1) on the side of the traction machine is selected, the inclined taper of the tensioning mandrel (31) is pressed against the positioning pin (21), the positioning pin (21) is expanded outward along the radial direction of the fixed disc (1) against the elastic force of the return spring (22), the bullet-shaped taper of the positioning pin (21) is guided into the punching hole on the steel mesh (4), and mechanical interlocking is realized; S4. Repeat step S3 to complete the mechanical interlocking of the positioning pin (21) on the fixed disc (1) on the other side with the punching hole on the steel mesh (4); S5. The traction machine is started, sequentially driving the steel mesh (4) on the side of the traction machine, the quick docking structure, and the steel mesh (4) on the side of the machine head to move synchronously, after moving to the position, an external force pushes the movable trigger unit (3), the inclined taper of the tensioning mandrel (31) is no longer pressed against the positioning pin (21), and the return spring (22) rebounds to drive the positioning pin (21) to contract along the radial direction of the fixed disc (1) to the center, and the reset is completed.

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