A traction mechanism for polyethylene double-wall corrugated pipe production equipment

Abstract

The present invention is applicable to the technical field of corrugated pipe production, and provides a traction mechanism for polyethylene double-wall corrugated pipe production equipment, including a base, a plurality of movable seats are slidably provided in the support two and the support one on the base, and a clamping assembly is also fixed on the movable seat; a screw rod is respectively provided in the support one and the support two, and a driving assembly for driving the two screw rods to rotate synchronously is also installed on the base; an inner ring is rotatably installed in the inner cavity of the movable seat, and a plurality of transmission control telescopic cylinders are circumferentially fixed on the inner side of the inner ring, and a transmission plate capable of being connected to the screw rod thread transmission is fixed at the end of the telescopic core shaft of the transmission control telescopic cylinder; a fixing groove is also provided on the outer side of the inner ring, and a fixing control assembly capable of elastically abutting against the fixing groove is also installed on the movable seat. The present invention can continuously and evenly pull the corrugated pipe; at the same time, through flexible transmission and fixing mechanisms, it ensures that the traction process is continuous and easy to reset, thereby improving the reliability and flexibility of traction.

Description

Technical Field

[0001] The invention belongs to the technical field of corrugated pipe production, and in particular relates to a traction mechanism used for polyethylene double-wall corrugated pipe production equipment. Background Art

[0002] Polyethylene double-wall corrugated pipe is a high-performance pipe, mainly used in municipal drainage, sewage and other pipeline system projects. Its main advantages are as follows: strong chemical stability, strong resistance to aging and environmental stress cracking, and greatly enhanced ring stiffness; compared with concrete pipes and cast iron pipes, it has a low purchase price, simple construction and installation, and reduces construction costs and labor expenditures; the inner wall is smooth and the friction coefficient is small, which increases the flow rate per unit time and has strong anti-silt and anti-blocking capabilities; it has strong compressive resistance, low brittle temperature (-70℃), and good impact resistance; under conditions where it is not exposed to sunlight or ultraviolet rays, its service life can reach more than 50 years.

[0003] In the production process of polyethylene double-wall corrugated pipe, a traction device is needed, but the existing device cannot continuously and evenly pull the corrugated pipe, and the control is not flexible and reliable, which affects the work efficiency. Therefore, in view of the above situation, it is urgent to develop a traction mechanism for polyethylene double-wall corrugated pipe production equipment to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The object of the present invention is to provide a traction mechanism for polyethylene double-wall corrugated pipe production equipment, aiming to solve the problems mentioned in the above background technology.

[0005] The present invention is achieved by a traction mechanism for a polyethylene double-wall corrugated pipe production device, comprising a base and also comprising:

[0006] Support 1 and support 2, support 2 and support 1 are fixed on the front and rear sides of the base respectively, multiple movable seats are slidably arranged in support 2 and support 1 respectively, and clamping components for clamping the corrugated pipe are also fixed on the two movable seats corresponding to the front and rear;

[0007] A screw rod, wherein the support 1 and the support 2 are respectively provided with a screw rod penetrating through the plurality of movable seats, and a driving assembly for driving the two screw rods to rotate synchronously is also installed on the base;

[0008] An inner ring, wherein an inner cavity is provided on the inner side of the movable seat, and an inner ring is rotatably mounted in the inner cavity. A plurality of transmission control telescopic cylinders are fixedly distributed circumferentially on the inner side of the inner ring, and a transmission plate capable of being connected to the screw thread transmission of the transmission control telescopic cylinder is fixedly disposed on the end of the telescopic core shaft of the transmission control telescopic cylinder;

[0009] A fixing control component, a fixing groove is provided on the outer side of the inner ring, and a fixing control component capable of elastically abutting against the fixing groove is installed on the movable seat.

[0010] A further technical solution is that the clamping assembly includes a clamping telescopic cylinder, an arc-shaped clamping plate, an elastic anti-skid pad and a height-adjustable telescopic cylinder. The two corresponding front and rear movable seats are fixed with a height-adjustable telescopic cylinder. The tops of support one and support two are also provided with movable openings for the movement of the height-adjustable telescopic cylinder. The upper end of the height-adjustable telescopic cylinder is fixed with a clamping telescopic cylinder. An arc-shaped clamping plate is relatively fixed at the ends of the two clamping telescopic cylinders that are close to each other, and an elastic anti-skid pad is also fixed to the inner side of the arc-shaped clamping plate.

[0011] A further technical solution is that the traction mechanism for the polyethylene double-wall corrugated pipe production equipment also includes a support plate arranged between support one and support two, the support plate adopts a middle arc-shaped concave structure, a plurality of balls are evenly distributed and installed on the upper side of the support plate, and a plurality of lifting and telescopic cylinders are fixed on the lower side of the support plate, and the lower ends of the lifting and telescopic cylinders are fixed on the base.

[0012] A further technical solution is that the two ends of the screw rod are rotatably connected to the ends of support one and support two, and the movable seat is also provided with a screw rod hole for the screw rod to pass through; the driving assembly includes a pulley, a transmission belt, a motor bracket and a motor, the end of the screw rod is fixed with a pulley, the two pulleys are connected by a transmission belt, the end of one of the screw rods is also transmission connected to the motor, and the motor is also fixedly connected to the base through the motor bracket.

[0013] A further technical solution is that the locking control component includes an adjusting telescopic cylinder, a locking head, a slide plate one, a slide plate two, a spring, a limit rod and an adjusting nut. An adjusting cavity is opened in the movable seat, and slide plates two and one are slidably arranged in the adjusting cavity respectively. A plurality of limit rods are fixed on the side of slide plate one close to slide plate two, and the limit rods slide through slide plate two. An adjusting nut is also threadedly connected to the limit rod on the side of slide plate two away from slide plate one. A spring is also sleeved on the limit rod between slide plates one and two. An adjusting telescopic cylinder is also fixed on the side of slide plate two away from slide plate one on the movable seat, and the end of the telescopic core shaft of the adjusting telescopic cylinder is also fixedly connected to slide plate two. A locking head that can abut against the locking groove is also fixed on the side of slide plate one away from slide plate two.

[0014] According to a further technical solution, a moving cavity for the moving seat to slide is provided in the support one and the support two; and an avoidance groove for avoiding the adjustment of the telescopic cylinder is also provided on the inner wall of the moving cavity.

[0015] According to a further technical solution, 3 to 6 fixing grooves are evenly distributed in the circumferential direction of the outer side of the inner ring, and the end of the fixing head is chamfered.

[0016] The traction mechanism for polyethylene double-wall corrugated pipe production equipment provided by the present invention has the following beneficial effects:

[0017] In the initial state, multiple groups of clamping components are arranged at the receiving end, and the rightmost group of clamping components is started first to clamp the corrugated pipe. Through the transmission control telescopic cylinder built into the lower moving seat, the transmission plate and the screw rod are controlled to realize the threaded transmission connection. The driving component drives the screw rod to rotate, thereby driving the moving seat to move in an orderly manner.

[0018] As the rightmost moving seat moves a certain distance, the transmission plate in the second group of moving seats will realize threaded transmission connection with the lead screw, and at the same time, the second group of clamping components will start to clamp the bellows, and so on, forming a cycle, ensuring that multiple groups of clamping components can respectively pull the different lengths of the bellows evenly, thereby improving the reliability of traction and the uniformity of the force on the bellows.

[0019] When the moving seat moves to the end position of the support 1 and the support 2, due to the special rotation design of the inner ring and the elastic contact mechanism between the locking control component and the locking groove, once the transmission force of the screw rod on the transmission plate exceeds the set critical value, the inner ring will rotate, causing the locking control component to slip off the locking groove. This design ensures that all the moving seats can be smoothly gathered at one end, which not only maintains the continuity of traction, but also facilitates the reset operation of the equipment.

[0020] When the transmission force of the screw on the transmission plate is reduced to below the critical value again, the inner ring will rotate at a certain angle, so that the locking control component will re-elasticly contact with the locking groove, thereby locking the rotation of the inner ring and ensuring that the moving seat can continue to move in the predetermined manner. The whole process is flexible and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a traction mechanism for a polyethylene double-wall corrugated pipe production device provided in an embodiment of the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0023] Figure 3 A schematic diagram of the main structure of a traction mechanism for a polyethylene double-wall corrugated pipe production device provided in an embodiment of the present invention;

[0024] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the BB direction;

[0025] Figure 5 for Figure 4 A schematic cross-sectional view of the moving seat portion;

[0026] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of the middle C part;

[0027] Figure 7 for Figure 5 Schematic diagram of the structure after the inner ring rotates.

[0028] In the figure: 1-clamping assembly, 2-clamping telescopic cylinder, 3-arc clamping plate, 4-elastic anti-skid pad, 5-heightening telescopic cylinder, 6-support plate, 7-ball, 8-support one, 9-base, 10-lifting telescopic cylinder, 11-support two, 12-movable port, 13-moving seat, 14-pulley, 15-drive belt, 16-motor bracket, 17-motor, 18-moving cavity, 19-screw hole, 20-screw, 21-avoidance groove, 22-adjusting telescopic cylinder, 23-transmission control telescopic cylinder, 24-retaining groove, 25-transmission plate, 26-inner ring, 27-inner cavity, 28-adjusting cavity, 29-retaining head, 30-slide plate one, 31-slide plate two, 32-spring, 33-limit rod, 34-adjusting nut. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0031] like Figure 1-Figure 7 As shown, a traction mechanism for a polyethylene double-wall corrugated pipe production device provided by an embodiment of the present invention includes a base 9 and also includes:

[0032] Support 1 8 and support 2 11, support 2 11 and support 1 8 are fixed on the front and rear sides of the base 9, and multiple movable seats 13 are slidably arranged in support 2 11 and support 1 8, and a clamping assembly 1 for clamping the corrugated pipe is also fixed on the two corresponding movable seats 13 at the front and rear;

[0033] Screw rod 20, the support 1 8 and the support 2 11 are respectively provided with a screw rod 20 penetrating through the plurality of movable seats 13, and the base 9 is also provided with a driving assembly for driving the two screw rods 20 to rotate synchronously;

[0034] An inner ring 26, an inner cavity 27 is provided on the inner side of the movable seat 13, the inner ring 26 is rotatably mounted in the inner cavity 27, a plurality of transmission control telescopic cylinders 23 are fixedly arranged on the inner side of the inner ring 26 in a circumferential direction, and a transmission plate 25 capable of being threadedly connected to the screw rod 20 is fixedly disposed on the end of the telescopic mandrel of the transmission control telescopic cylinder 23;

[0035] A fixing control component: a fixing groove 24 is further provided on the outer side of the inner ring 26 , and a fixing control component capable of elastically abutting against the fixing groove 24 is also installed on the movable seat 13 .

[0036] In the embodiment of the present invention, in the initial state, multiple groups of clamping assemblies 1 are arranged at the material receiving end, and the rightmost group of clamping assemblies 1 is started first to clamp the corrugated pipe. The transmission control telescopic cylinder 23 built into the lower moving seat 13 controls the transmission plate 25 to realize the threaded transmission connection with the screw rod 20. The driving assembly drives the screw rod 20 to rotate, thereby driving the moving seat 13 to move in an orderly manner.

[0037] After the rightmost movable seat 13 moves a certain distance, the transmission plate 25 in the second group of movable seats 13 will realize threaded transmission connection with the screw 20, and at the same time, the second group of clamping components 1 begins to clamp the bellows, and so on, forming a cycle, ensuring that multiple groups of clamping components 1 can respectively evenly pull different lengths of the bellows, thereby improving the reliability of traction and the uniformity of force on the bellows.

[0038] When the moving seat 13 moves to the end position of the support 1 8 and the support 2 11, due to the special rotation design of the inner ring 26 and the elastic abutment mechanism between the locking control component and the locking groove 24, once the transmission force of the screw rod 20 on the transmission plate 25 exceeds the set critical value, the inner ring 26 will rotate, causing the locking control component to slip off the locking groove 24. This design ensures that all the moving seats 13 can be smoothly gathered at one end, which not only maintains the continuity of traction, but also facilitates the reset operation of the equipment.

[0039] When the transmission force of the screw rod 20 on the transmission plate 25 is reduced to below the critical value again, the inner ring 26 will rotate at a certain angle, so that the locking control component will re-elasticly abut against the locking groove 24, thereby locking the rotation of the inner ring 26 and ensuring that the movable seat 13 can continue to move in a predetermined manner. The whole process is flexible and reliable.

[0040] It should be noted that when the moving seat 13 is reset to the initial position, the transmission plate 25 in the moving seat 13 is still controlled by the corresponding transmission control telescopic cylinder 23 to be threadedly connected with the screw rod 20 to achieve the purpose of uniform traction, which is not limited or elaborated.

[0041] like Figure 1 and Figure 2As shown, as a preferred embodiment of the present invention, the clamping assembly 1 includes a clamping telescopic cylinder 2, an arc-shaped clamping plate 3, an elastic anti-skid pad 4 and a height-adjustable telescopic cylinder 5, and the two corresponding movable seats 13 at the front and rear are fixed with a height-adjustable telescopic cylinder 5, and the tops of the support 1 8 and the support 2 11 are also provided with movable openings 12 for the movement of the height-adjustable telescopic cylinder 5, and the upper end of the height-adjustable telescopic cylinder 5 is fixed with a clamping telescopic cylinder 2, and the arc-shaped clamping plate 3 is relatively fixed at the ends of the two clamping telescopic cylinders 2 that are close to each other, and the elastic anti-skid pad 4 is also fixed to the inner side of the arc-shaped clamping plate 3; the height of the traction bellows can be adjusted by raising the telescopic cylinder 5; the clamping telescopic cylinder 2 can control the movement of the arc-shaped clamping plate 3, so as to clamp and fix the bellows; the elastic anti-skid pad 4 can improve the reliability of clamping.

[0042] like Figure 1 As shown, as a preferred embodiment of the present invention, the traction mechanism for the polyethylene double-wall corrugated pipe production equipment also includes a support plate 6 arranged between support one 8 and support two 11, and the support plate 6 adopts a middle arc-shaped concave structure. The length of the support plate 6 is not limited and can be arranged as needed. A number of balls 7 are evenly distributed and installed on the upper side of the support plate 6, and a plurality of lifting and telescopic cylinders 10 are fixed on the lower side of the support plate 6, and the lower end of the lifting and telescopic cylinder 10 is fixed on the base 9; the height of the support plate 6 can be adjusted by the lifting and telescopic cylinder 10, which is beneficial for the support plate 6 to provide auxiliary support for the corrugated pipe, and the friction is reduced by the ball 7, which is beneficial for the lossless and reliable movement of the corrugated pipe, thereby facilitating the traction operation.

[0043] like Figure 1-Figure 7 As shown, as a preferred embodiment of the present invention, the two ends of the screw rod 20 are rotatably connected to the ends of the support 1 8 and the support 2 11, and the movable seat 13 is also provided with a screw rod hole 19 for the screw rod 20 to pass through; the driving assembly includes a pulley 14, a transmission belt 15, a motor bracket 16 and a motor 17, the end of the screw rod 20 is fixed with a pulley 14, the two pulleys 14 are connected by a transmission belt 15, and the end of one of the screw rods 20 is also transmission-connected to the motor 17, and the motor 17 is also fixedly connected to the base 9 through the motor bracket 16; starting the motor 17 can drive one screw rod 20 to rotate, and utilizing the synchronous transmission of the pulley 14 and the transmission belt 15, so that the other screw rod 20 also rotates synchronously, thereby ensuring the consistency of the movement control of the movable seats 13 on both sides, thereby ensuring the transmission effect of the clamping assembly 1.

[0044] The transmission plate 25 can be arranged as an arc structure that cooperates with the screw rod 20, and a thread that cooperates with the screw rod 20 is set on the inner side of the transmission plate 25. The transmission control telescopic cylinder 23 can be used to control whether the transmission plate 25 is connected to the screw rod 20 through threaded transmission, thereby directly selecting to control the movement of the required number of moving seats 13, which is suitable for the traction requirements of corrugated pipes of different lengths.

[0045] For the structural arrangement of the reinforcement control components, please refer to Figure 4-Figure 7 The fixing control component includes an adjusting telescopic cylinder 22, a fixing head 29, a slide plate 30, a slide plate 31, a spring 32, a limiting rod 33 and an adjusting nut 34. An adjusting chamber 28 is opened in the moving seat 13, and slide plates 2 31 and slide plates 1 30 are slidably arranged in the adjusting chamber 28 respectively. A plurality of limiting rods 33 are fixed on the side of slide plate 1 30 close to slide plate 2 31, and the limiting rods 33 slide through slide plate 2 31. An adjusting nut 34 is also threadedly connected to the limiting rod 33 on the side of slide plate 2 31 away from slide plate 1 30. A spring 32 is also sleeved on the limiting rod 33 between the slide plates 1 30 and the slide plates 2 31. An adjusting telescopic cylinder 22 is also fixed on the side of the slide plates 2 31 away from slide plate 1 30 on the moving seat 13. The end of the telescopic core shaft of the adjusting telescopic cylinder 22 is also fixedly connected to the slide plate 2 31. A fixing head 29 capable of abutting against the fixing groove 24 is also fixed on the side of the slide plates 1 30 away from slide plate 2 31.

[0046] Preferably, a moving cavity 18 for the moving seat 13 to slide is provided in the support 1 8 and the support 2 11, which ensures that the moving seat 13 can move reliably and the moving seat 13 will not twist, and the reliability is high; an avoidance groove 21 for avoiding the adjusting telescopic cylinder 22 is also provided on the inner wall of the moving cavity 18, that is, the movement of the moving seat 13 will not affect the adjusting telescopic cylinder 22, and the reliability is high.

[0047] Preferably, 3 to 6 retaining grooves 24 are evenly distributed in the circumferential direction of the outer side of the inner ring 26, and the end of the retaining head 29 is chamfered to improve the reliability of the abutment between the retaining head 29 and the retaining groove 24, and to enable it to slide out smoothly when the transmission force exceeds the critical value.

[0048] The above-mentioned fixing control component, when in use, can control the elastic contact force of the fixing head 29 on the fixing groove 24 by adjusting the telescopic cylinder 22, thereby adjusting the critical value of the transmission force, and the application is reliable; through the limitation of the limit rod 33 and the adjusting nut 34, the reliability of adjusting the telescopic cylinder 22 to drive the slide plate 30 to move can be guaranteed, and at the same time, the spring 32 can be guided to improve the reliability of the elastic support.

[0049] The above-mentioned embodiment of the present invention provides a traction mechanism for polyethylene double-wall corrugated pipe production equipment. Through the setting of multiple groups of clamping components 1 and successive transmission, continuous and uniform traction of the corrugated pipe can be achieved, force balance is ensured, and traction reliability is improved; at the same time, through flexible transmission and anti-locking mechanisms, the traction process is ensured to be continuous and easy to reset, the operation is flexible and reliable, and work efficiency and safety are greatly improved.

[0050] In addition, the control of each component can be carried out by using a PLC controller disclosed in the prior art, and the model and circuit connection of each component are not specifically limited and can be flexibly set in actual application.

[0051] The circuits, electronic components and modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0052] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A traction mechanism for a polyethylene double-wall corrugated pipe production device, comprising a base (9), characterized in that: Also includes: Support 1 (8) and support 2 (11), support 2 (11) and support 1 (8) are fixed to the front and rear sides of the base (9), a plurality of movable seats (13) are slidably provided in support 2 (11) and support 1 (8), and a clamping assembly (1) for clamping the corrugated pipe is also fixed to the two movable seats (13) corresponding to the front and rear sides; A screw rod (20), wherein each of the support 1 (8) and the support 2 (11) is provided with a screw rod (20) penetrating through the plurality of movable seats (13), and a driving assembly for driving the two screw rods (20) to rotate synchronously is also installed on the base (9); An inner ring (26), an inner cavity (27) is formed on the inner side of the movable seat (13), the inner ring (26) is rotatably mounted in the inner cavity (27), a plurality of transmission control telescopic cylinders (23) are fixedly arranged in a circumferential direction on the inner side of the inner ring (26), and a transmission plate (25) capable of being threadedly connected to the screw rod (20) is fixedly disposed on the end of the telescopic core shaft of the transmission control telescopic cylinder (23); A fixing control component, wherein a fixing groove (24) is provided on the outer side of the inner ring (26), and a fixing control component capable of elastically abutting against the fixing groove (24) is also installed on the movable seat (13).

2. The traction mechanism for polyethylene double-wall corrugated pipe production equipment according to claim 1 is characterized in that: The clamping assembly (1) comprises a clamping telescopic cylinder (2), an arc-shaped clamping plate (3), an elastic anti-slip pad (4) and a height-adjusting telescopic cylinder (5); The two corresponding movable seats (13) at the front and rear are both fixed with a height-adjusting telescopic cylinder (5), and the tops of the support seat 1 (8) and the support seat 2 (11) are also provided with a movable opening (12) for moving the height-adjusting telescopic cylinder (5); A clamping telescopic cylinder (2) is fixed to the upper end of the height-adjusting telescopic cylinder (5), and an arc-shaped clamping plate (3) is relatively fixed to the adjacent ends of the two clamping telescopic cylinders (2), and an elastic anti-skid pad (4) is also fixed to the inner side of the arc-shaped clamping plate (3).

3. The traction mechanism for polyethylene double-wall corrugated pipe production equipment according to claim 1 or 2, characterized in that: The traction mechanism for polyethylene double-wall corrugated pipe production equipment also includes a support plate (6) arranged between the first support (8) and the second support (11); The support plate (6) has a central arc-shaped concave structure; A plurality of balls (7) are evenly distributed and mounted on the upper side of the support plate (6), a plurality of lifting and telescopic cylinders (10) are fixed on the lower side of the support plate (6), and the lower ends of the lifting and telescopic cylinders (10) are fixed on the base (9).

4. The traction mechanism for polyethylene double-wall corrugated pipe production equipment according to claim 1, characterized in that: The two ends of the screw rod (20) are rotatably connected to the ends of the support 1 (8) and the support 2 (11) respectively; The movable seat (13) is also provided with a screw hole (19) for the screw (20) to pass through; The driving assembly comprises a pulley (14), a transmission belt (15), a motor bracket (16) and a motor (17); A pulley (14) is fixed to the end of the screw rod (20), and the two pulleys (14) are connected via a transmission belt (15). The end of one of the screw rods (20) is also transmission-connected to a motor (17), and the motor (17) is also fixedly connected to the base (9) via a motor bracket (16).

5. The traction mechanism for polyethylene double-wall corrugated pipe production equipment according to claim 1 or 4, characterized in that: The fixing control assembly comprises an adjusting telescopic cylinder (22), a fixing head (29), a slide plate 1 (30), a slide plate 2 (31), a spring (32), a limiting rod (33) and an adjusting nut (34); The movable seat (13) is provided with an adjustment cavity (28), in which a second slide plate (31) and a first slide plate (30) are slidably provided respectively, a plurality of limit rods (33) are fixed on a side of the first slide plate (30) close to the second slide plate (31), the limit rods (33) slide through the second slide plate (31), and an adjustment nut (34) is threadedly connected to the limit rods (33) on a side of the second slide plate (31) away from the first slide plate (30); A spring (32) is also sleeved on the limiting rod (33) between the first slide plate (30) and the second slide plate (31); An adjusting telescopic cylinder (22) is fixed on the movable seat (13) on the side of the second slide plate (31) away from the first slide plate (30), and the end of the telescopic core shaft of the adjusting telescopic cylinder (22) is also fixedly connected to the second slide plate (31); A fixing head (29) capable of abutting against the fixing groove (24) is also fixed on a side of the first sliding plate (30) away from the second sliding plate (31).

6. The traction mechanism for polyethylene double-wall corrugated pipe production equipment according to claim 5, characterized in that: The support 1 (8) and the support 2 (11) are provided with a moving cavity (18) for the moving seat (13) to slide; The inner wall of the moving chamber (18) is also provided with an avoidance groove (21) for avoiding the adjusting telescopic cylinder (22).

7. The traction mechanism for polyethylene double-wall corrugated pipe production equipment according to claim 5, characterized in that: The fixing grooves (24) are arranged in a number of 3 to 6 evenly distributed in the circumferential direction of the outer side of the inner ring (26), and the end of the fixing head (29) is rounded.

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