Anti-pressure capability detection device for PE pipe production and manufacturing

Abstract

The invention relates to the technical field of pressure resistance detection of pipes, in particular to a pressure resistance detection device for PE pipe production and manufacturing, which comprises a working platform, a lifting mechanism is mounted on the working platform, and the lifting mechanism is connected with a constant-pressure pressing structure. The working platform is provided with a pressure supply assembly communicating with the constant-pressure pressing structure to stabilize the pressing pressure of the constant-pressure pressing structure. The working platform is provided with two groups of limiting and supporting assemblies for supporting and limiting a to-be-detected pipe, and the working platform is provided with a transmission assembly; through cooperative action of the lifting mechanism, the transmission assembly and the limiting and supporting assembly, a full-automatic continuous detection cycle of single-time pressing detection, automatic resetting, driving of a pipe to rotate by a preset circumferential distance and preparation of next detection is realized; the problems of low efficiency, non-uniform distribution of detection points and poor integrity of detection data caused by manual adjustment of the position of the pipe in the prior art are effectively solved, and the detection efficiency and the automation level are improved.

Description

Technical Field

[0001] This invention relates to the field of pipe pressure resistance testing technology, specifically to a pressure resistance testing device for PE pipe manufacturing. Background Technology

[0002] PE pipes are widely used in water supply and drainage, gas transmission, municipal engineering and many other fields due to their advantages such as corrosion resistance, good flexibility and convenient connection. Their compressive strength is the core performance indicator that determines the safety, service life and applicable scenarios of the pipe. Therefore, compressive strength testing is an essential process in the production and manufacturing of PE pipes. Currently, existing PE pipe compressive strength testing devices mostly employ single-point positioning for circumferential testing. After each test, the pipe's circumferential position must be manually adjusted before moving on to the next point. This method is not only labor-intensive and inefficient, but also prone to uneven distribution of circumferential testing points due to angular deviations and insufficient positioning accuracy caused by manual rotation. Consequently, it fails to comprehensively reflect the actual compressive strength of the PE pipe at all circumferential positions, resulting in poor data completeness and accuracy. Therefore, this paper proposes a compressive strength testing device for PE pipe manufacturing. This device enables continuous, accurate, and automated testing of the compressive strength of pipes at all circumferential points, improving testing efficiency and data reliability to meet the testing needs of large-scale PE pipe production. Summary of the Invention

[0003] To address the problems in the existing technology, this invention provides a compressive strength testing device for PE pipe manufacturing, which can realize continuous, accurate and automated testing of the compressive strength performance at various points in the circumference of the pipe, improve testing efficiency and the reliability of test data, so as to meet the testing needs of large-scale PE pipe production.

[0004] The technical solution adopted by this invention to solve its technical problem is a pressure resistance testing device for PE pipe manufacturing, including a working platform, a lifting mechanism installed on the working platform, a constant pressure pressing structure connected to the lifting mechanism, a pressure supply component installed on the working platform that is connected to the constant pressure pressing structure to stabilize the pressing pressure of the constant pressure pressing structure; two sets of limiting support components for supporting and limiting the pipe to be tested are provided on the working platform, and a transmission component is provided on the working platform. When the pressure supply component completes a single pressure test and resets upward, the lifting mechanism drives the limiting support components through the transmission component to drive the pipe to be tested to rotate around its own axis, so as to rotate the pipe to the next testing position.

[0005] Specifically, both sets of limiting support components include a support fixedly connected to the upper surface of the work platform. Above the support, there are horizontally arranged rotating rollers and auxiliary rollers. Both ends of the rotating rollers and auxiliary rollers are rotatably connected to connecting plates. The connecting plates are fixedly connected to the support. A horizontally arranged drive shaft is fixedly connected between the two sets of rotating rollers. The drive shaft is equipped with a drive gear that meshes with the transmission component.

[0006] Specifically, the transmission assembly includes a vortex gear that meshes with the drive gear and a mounting plate that is connected to the lifting mechanism for synchronous lifting. One end of the vortex gear is fixedly connected to a horizontally arranged drive shaft, and a rotating seat is fixedly connected to the working platform. One end of the drive shaft passes through the rotating seat and is connected to a drive gear through a one-way bearing. The mounting plate is fixedly connected to a vertically arranged rack through a support plate, and a through hole corresponding to the rack is provided through the working platform. The rack meshes with the drive gear for transmission.

[0007] Specifically, the constant pressure pressing structure includes a vertically arranged drive cylinder, with a pressing block fixedly connected to the output end of the drive cylinder. The drive cylinder is connected to an air inlet connector and a pressure relief valve, and the air inlet connector is connected to the pressure supply component through a pipeline.

[0008] Specifically, the pressure supply assembly includes an air supply cylinder vertically mounted on the upper surface of the work platform. The upper end of the air supply cylinder is fixedly connected to the mounting plate, and the lower end of the air supply cylinder is fixedly connected to the work platform. The air supply cylinder is connected to a one-way inlet valve and a one-way outlet valve. The one-way outlet valve is connected to the inlet connector through a pipeline.

[0009] Specifically, the working platform has two sets of slots, and two sets of vertically arranged limiting plates are installed in the slots. Several sets of vertically arranged elastic limiting rollers are installed on the side of the two sets of limiting plates that are close to each other. The side of the limiting plates that is away from the elastic limiting rollers is fixedly connected to the inner wall of the slot through a horizontally arranged pneumatic telescopic rod. A return spring is fixedly connected between the fixed end of the pneumatic telescopic rod and the limiting plate. The air supply cylinder is connected to a pressure regulating valve, which is connected to the pneumatic telescopic rod through a pipeline.

[0010] Specifically, the upper surface of the working platform is provided with two sets of U-shaped plates. The U-shaped plates are rotatably connected with extrusion rollers corresponding to the axial direction of the pipe. An arc-shaped cleaning plate is fixedly connected between the two sets of U-shaped plates. Several sets of air outlets are provided on the arc-shaped cleaning plate. An extrusion spring rod is fixedly connected between the lower surface of the U-shaped plate and the working platform. The arc-shaped cleaning plate is connected to the pressure relief valve through a pipeline.

[0011] Specifically, the lifting mechanism includes two sets of vertically arranged electric rails, each with an electric slider slidably connected to it. A horizontally arranged movable plate is fixedly connected between the two sets of electric sliders. The mounting plate is fixedly connected to the lower part of the electric slider, and the fixed end of the drive cylinder is fixedly connected to the lower part of the movable plate.

[0012] Specifically, several sets of support legs are fixedly connected to the lower surface of the work platform; a control switch is provided on one side of the work platform.

[0013] The beneficial effects of this invention are: The pressure resistance testing device for PE pipe manufacturing described in this invention achieves a fully automated continuous testing cycle through the coordinated action of a lifting mechanism, a transmission component, and a limiting support component. This cycle includes single-press testing, automatic reset, driving the pipe to rotate a preset circumferential distance, and preparing for the next test. It effectively solves the problems of low efficiency, uneven distribution of testing points, and poor integrity of testing data caused by the need for manual adjustment of pipe position in existing technologies, thereby improving testing efficiency and automation level.

[0014] The pressure resistance testing device for PE pipe manufacturing described in this invention links the extension and retraction of the air supply cylinder with the lifting and lowering movement of the lifting mechanism. When the lifting mechanism descends for testing, it simultaneously squeezes the air supply cylinder to provide a stable air source for the drive cylinder, ensuring constant testing pressure, avoiding interference from pressure fluctuations on the testing data, improving the accuracy of the testing results and the uniformity of testing conditions for different pipe materials and different testing points.

[0015] The present invention discloses a pressure resistance testing device for PE pipe manufacturing. During testing, a portion of the air pressure from the air supply cylinder drives the air pressure telescopic rod through a pressure regulating valve, causing the limit plates on both sides to drive the elastic limit rollers to flexibly clamp the pipe, preventing it from shifting. The clamping force is adaptively adjusted according to the pipe diameter. Simultaneously, excess gas at constant pressure from the driving cylinder is delivered to the air outlet of the arc-shaped cleaning plate through a pressure relief valve to perform air jet cleaning on the pipe testing area, removing surface impurities. No additional power source or control is required, realizing intelligent integration of functions and further improving the accuracy of the test results and the convenience of the device. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is an isometric view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 for Figure 1 Enlarged view of region A; Figure 4 This is a schematic cross-sectional view of the working platform of the present invention; Figure 5 for Figure 4 Enlarged view of region B; Figure 6 for Figure 4 Enlarged view of region C; Figure 7This is a schematic diagram of the connection structure between the rotating roller and the auxiliary roller of the present invention; Figure 8 This is a side view of the pipe structure after placement according to the present invention; In the diagram: 1. Working platform; 2. Support; 3. Rotating roller; 4. Auxiliary roller; 5. Connecting plate; 6. Drive shaft; 7. Drive gear; 8. Mounting plate; 9. Transmission shaft; 10. Rotating seat; 11. One-way bearing; 12. Transmission gear; 13. Support plate; 14. Rack; 15. Through hole; 16. Drive cylinder; 17. Extrusion block; 18. Air inlet connector; 19. Pressure relief valve; 20. Air supply cylinder; 21. Single... 21. Inlet valve; 22. One-way outlet valve; 23. Groove; 24. Limiting plate; 25. Elastic limiting roller; 26. Pneumatic telescopic rod; 27. Return spring; 28. Pressure regulating valve; 29. ​​U-shaped plate; 30. Extrusion roller; 31. Arc-shaped cleaning plate; 32. Air outlet; 33. Extrusion spring rod; 34. Electric track; 35. Electric slider; 36. Moving plate; 37. Support leg; 38. Control switch; 39. Scroll gear. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0019] To achieve continuous, accurate, and automated testing of the compressive strength of pipes at various circumferential points, and to improve testing efficiency and the reliability of test data, as one embodiment of the present invention, such as... Figure 1 As shown, the pressure resistance testing device for PE pipe manufacturing according to the present invention includes a working platform 1, a lifting mechanism installed on the working platform 1, a constant pressure pressing structure connected to the lifting mechanism, a pressure supply component installed on the working platform 1 that communicates with the constant pressure pressing structure to stabilize the pressing pressure of the constant pressure pressing structure; two sets of limiting support components for supporting and limiting the pipe to be tested are provided on the working platform 1, and a transmission component is provided on the working platform 1. When the pressure supply component completes a single pressure test and resets upward, the lifting mechanism drives the limiting support components through the transmission component to drive the pipe to be tested to rotate around its own axis, so as to drive the pipe to rotate to the next testing position.

[0020] During use, the pipe to be tested is placed horizontally on two sets of limiting support components, forming stable support and limiting to prevent displacement and shaking during the test. The lifting mechanism is activated to move downwards, simultaneously moving the constant pressure pressing structure towards the pipe. At the same time, the pressure supply component is activated, supplying pressure to the constant pressure pressing structure through the pipeline and maintaining a constant pressure state. As the lifting mechanism continues to move downwards, the constant pressure pressing structure contacts the surface of the pipe and applies constant pressure, completing a single pressure resistance test. The cooperation between the pressure supply component and the constant pressure pressing structure ensures constant test pressure, avoids the impact of pressure fluctuations on the data, and improves the accuracy of the test results. After a single pressure test is completed, the lifting mechanism resets and drives the limit support component to move through the transmission component, causing the pipe to rotate around its own axis, so that the untested circumferential position is aligned with the constant pressure pressing structure. This method eliminates the need for manual adjustment of the pipe position, realizes automated switching of circumferential test points, and saves labor costs. The fixed distance of circumferential movement of the pipe ensures uniform distribution of test points, comprehensively reflects the actual pressure resistance of the PE pipe at each circumferential position, improves the integrity of test data, and meets the testing needs of large-scale production.

[0021] To improve the versatility and applicability of the device, for example, such as Figure 2 , Figure 3 , Figure 7 As shown, the present invention also includes two sets of limiting support components, each including a support 2 fixedly connected to the upper surface of the working platform 1. A horizontally arranged rotating roller 3 and an auxiliary roller 4 are provided above the support 2. Both ends of the rotating roller 3 and the auxiliary roller 4 are rotatably connected to a connecting plate 5. The connecting plate 5 is fixedly connected to the support 2. A horizontally arranged drive shaft 6 is fixedly connected between the two sets of rotating rollers 3. The drive shaft 6 is provided with a drive gear 7 that meshes with the transmission component.

[0022] When in use, after a single pressure test is completed, the lifting mechanism resets and drives the drive shaft 6 to rotate through the transmission component meshing with the drive gear 7, thereby driving the two sets of rotating rollers 3 to rotate synchronously. The pipe to be tested is placed between the rotating roller 3 and the auxiliary roller 4. The rotating roller 3 drives the pipe to rotate around its own axis through friction. The circumferential movement distance of the pipe is fixed, completing the switching of the test point without the need for manual intervention to adjust the position. For pipes of different diameters to be tested, since the circumferential distance of each rotation is fixed, when the pipe diameter is small, its circumference is small, and the single rotation angle is increased, which can reduce the number of test points for small-diameter pipes; conversely, when the pipe diameter is large, its circumference is large, and the single rotation angle is decreased, which can automatically increase the number of test points for large-diameter pipes, meet the needs of multi-point testing of large-diameter pipes, ensure the accuracy of test results, realize adaptive testing of PE pipes of different specifications, improve the versatility and applicability of the device, and meet diverse testing needs.

[0023] To facilitate the rotation of the pipe and adjust its position, for example, such as Figure 2 , Figure 3 , Figure 4As shown, the present invention also includes a transmission assembly comprising a spiral tooth 39 that meshes with the drive gear 7 and a mounting plate 8 that is connected to the lifting mechanism for synchronous lifting. One end of the spiral tooth 39 is fixedly connected to a horizontally arranged transmission shaft 9. A rotating seat 10 is fixedly connected to the working platform 1. One end of the transmission shaft 9 passes through the rotating seat 10 and is connected to a transmission gear 12 through a one-way bearing 11. A vertically arranged rack 14 is fixedly connected to the mounting plate 8 through a support plate 13. A through hole 15 corresponding to the rack 14 is provided through the working platform 1. The rack 14 meshes with the transmission gear 12 for transmission.

[0024] During use, when testing for pressure resistance, the lifting mechanism moves downward, causing the mounting plate 8 and rack 14 to move vertically downward along the through hole 15. The rack 14 meshes with the transmission gear 12 for transmission. The one-way bearing 11 restricts the transmission of power to the transmission shaft 9, and the transmission shaft 9 and the spiral tooth 39 remain stationary. After a single test is completed, the lifting mechanism resets, causing the rack 14 to move upward, driving the transmission gear 12 to rotate in the opposite direction. The one-way bearing 11 releases the power transmission restriction, and the transmission gear 12 drives the spiral tooth 39 to rotate through the transmission shaft 9, which then meshes with the drive gear 7 for transmission. Finally, it drives the rotating roller 3 to rotate, thereby adjusting the position of the pipe, ensuring consistent rotation angles, and improving the uniformity of the test point distribution.

[0025] To facilitate the application of constant pressure to the pipe surface, for example, such as Figure 2 , Figure 8 As shown, the present invention also includes a constant pressure pressing structure comprising a vertically arranged drive cylinder 16, an extrusion block 17 fixedly connected to the output end of the drive cylinder 16, an air inlet connector 18 and a pressure relief valve 19 connected to the drive cylinder 16, and the air inlet connector 18 being connected to the pressure supply assembly through a pipeline.

[0026] During use, when the lifting mechanism moves downward, the pressure supply component delivers gas to the air inlet connector 18 through the pipeline, driving the cylinder 16 to extend and move the extrusion block 17 downward. When the pressure inside the cylinder reaches a preset constant value, excess gas is automatically discharged through the pressure relief valve 19. Subsequently, the pressure supply component continues to supply gas, and the pressure relief valve 19 dynamically adjusts the exhaust volume to maintain stable pressure inside the cylinder, achieving real-time constant pressure and avoiding interference from pressure fluctuations on the test data. As the lifting mechanism moves downward steadily, the extrusion block 17 contacts the surface of the pipe and applies constant pressure, completing a single extrusion test. The constant pressure state is maintained throughout the entire pressing process, ensuring the uniformity of test conditions for different test points and different pipe materials, and improving the comparability and reference value of the test data.

[0027] To improve the automation level of the device and the continuity of detection, for example, such as Figure 2 , Figure 3As shown, the present invention also includes a pressure supply assembly comprising an air supply cylinder 20 vertically disposed on the upper surface of the working platform 1. The upper end of the air supply cylinder 20 is fixedly connected to the mounting plate 8, and the lower end of the air supply cylinder 20 is fixedly connected to the working platform 1. The air supply cylinder 20 is connected to a one-way air inlet valve 21 and a one-way air outlet valve 22. The one-way air outlet valve 22 is connected to the air inlet connector 18 through a pipeline.

[0028] When in use, as the lifting mechanism moves downward, the mounting plate 8 presses against the output end of the air supply cylinder 20. After being pressurized, the gas inside the air supply cylinder 20 is directed to the air inlet connector 18 through the one-way outlet valve 22, providing continuous air supply to the drive cylinder 16 and ensuring the constant pressure pressing requirement. After a single test is completed, the lifting mechanism resets and drives the mounting plate 8 to move upward, creating a negative pressure inside the air supply cylinder 20. External gas is automatically replenished through the one-way inlet valve 21, preparing for the next test. No manual intervention is required in the air supply process, improving the automation level and testing continuity of the device, and adapting to the needs of large-scale testing.

[0029] For example, such as Figure 4 , Figure 6 As shown, the present invention also includes two sets of slots 23 on the working platform 1, two sets of vertically arranged limiting plates 24 in the slots 23, several sets of vertically arranged elastic limiting rollers 25 on the side of the two sets of limiting plates 24 that are close to each other, and the side of the limiting plates 24 that is far away from the elastic limiting rollers 25 that are fixedly connected to the inner wall of the slots 23 by a horizontally arranged pneumatic telescopic rod 26. A return spring 27 is fixedly connected between the fixed end of the pneumatic telescopic rod 26 and the limiting plate 24. The air supply cylinder 20 is connected to a pressure regulating valve 28, and the pressure regulating valve 28 is connected to the pneumatic telescopic rod 26 through a pipeline.

[0030] During operation, when the lifting mechanism moves downward, the pressurized gas in the air supply cylinder 20 is delivered to the pneumatic telescopic rod 26 through the pressure regulating valve 28, driving the pneumatic telescopic rod 26 to extend and move the two sets of limiting plates 24 towards the pipe. The elastic limiting roller 25 makes elastic contact with the side of the pipe, forming a flexible clamping fixation. The flexible clamping avoids damage to the pipe surface caused by rigid clamping and tightly adheres to the pipe through elastic force, preventing axial or radial displacement during the testing process. After a single test is completed, the lifting mechanism resets, the air supply cylinder 20 forms a negative pressure, the reset spring 27 releases elastic potential energy, pulls the pneumatic telescopic rod 26 to retract and reset, and at the same time, the internal gas is recovered to the air supply cylinder 20 through the pressure regulating valve 28. The clamping and reset actions automatically switch with the state of the lifting mechanism, realizing seamless connection of clamping, testing, reset, and angle adjustment, improving the operating efficiency of the device.

[0031] For example, such as Figure 4 , Figure 5As shown, the present invention also includes two sets of U-shaped plates 29 on the upper surface of the working platform 1, with extrusion rollers 30 rotatably connected inside the U-shaped plates 29 and corresponding to the axial direction of the pipe. An arc-shaped cleaning plate 31 is fixedly connected between the two sets of U-shaped plates 29. Several sets of air outlets 32 are provided on the arc-shaped cleaning plate 31. An extrusion spring rod 33 is fixedly connected between the lower surface of the U-shaped plate 29 and the working platform 1. The arc-shaped cleaning plate 31 is connected to the pressure relief valve 19 through a pipeline.

[0032] During use, after the pipe to be tested is placed, its own weight drives the extrusion roller 30 and U-shaped plate 29 to move downwards, the extrusion spring rod 33 stores force, and the arc-shaped cleaning plate 31 fits against the periphery of the pipe. When the lifting mechanism moves downwards for testing, excess gas in the drive cylinder 16 is delivered to the arc-shaped cleaning plate 31 through the pressure relief valve 19 and sprayed out through the air outlet 32 ​​to perform all-round air cleaning on the periphery of the pipe, removing dust and impurities from the surface of the pipe to be tested, and preventing foreign objects from affecting the contact accuracy between the extrusion block 17 and the pipe. This design does not require an additional air source for cleaning, saving energy and simplifying the structure. After a single test is completed, the lifting mechanism moves upwards, the drive cylinder 16 is depressurized, and the air outlet 32 ​​stops spraying. After the pipe is removed, the extrusion spring rod 33 releases its stored force, pushing all components to reset, ensuring the continuous and smooth operation of the device.

[0033] For example, such as Figure 1 , Figure 2 As shown, the present invention also includes a lifting mechanism comprising two sets of vertically arranged electric rails 34, each of which is slidably connected to an electric slider 35. A horizontally arranged movable plate 36 is fixedly connected between the two sets of electric sliders 35. A mounting plate 8 is fixedly connected to the lower part of the electric slider 35, and the fixed end of the drive cylinder 16 is fixedly connected to the lower part of the movable plate 36.

[0034] During use, after the testing program is started, the electric track 34 drives the two sets of electric sliders 35 to move vertically downwards synchronously, which in turn moves the mounting plate 8 and the moving plate 36 downwards. The mounting plate 8 compresses the air supply cylinder 20 to deliver constant pressure gas to the drive cylinder 16. The moving plate 36 moves the drive cylinder 16 closer to the pipe, and together with the constant pressure pressing structure, the pressure resistance test is completed. After a single test is completed, the electric slider 35 resets and moves the mounting plate 8, the moving plate 36, and the drive cylinder 16 upwards synchronously. The air supply cylinder 20 resets and replenishes pressure, ensuring that each component returns to its initial position accuracy and ensuring the reliability of continuous operation of the device.

[0035] For example, such as Figure 1 , Figure 2 As shown, the present invention also includes a plurality of sets of support legs 37 fixedly connected to the lower surface of the work platform 1; and a control switch 38 is provided on one side of the work platform 1.

[0036] During use, the stability of the work platform 1 can be ensured by relying on several sets of support legs 37, thus preventing the device from shaking during the testing process; During the testing process, the lifting mechanism and the start and stop of the testing program can be easily controlled by the control switch 38 on one side of the work platform 1, which improves the convenience and safety of the testing process.

[0037] In use, the PE pipe to be tested is placed horizontally between the rotating roller 3 and the auxiliary roller 4 of the two sets of limiting support components. The weight of the pipe drives the extrusion roller 30 and the U-shaped plate 29 to move downward. The extrusion spring rod 33 stores force and makes the arc-shaped cleaning plate 31 fit against the periphery of the pipe. The detection device is started by the control switch 38 on one side of the working platform 1, which controls the operation of the lifting mechanism and controls the electric track 34 to drive the two sets of electric sliders 35 to move downward synchronously, which in turn drives the mounting plate 8 and the moving plate 36 to move downward. The mounting plate 8 extrudes the air supply cylinder 20, and the internal gas is directionally delivered to the air inlet 18 of the drive cylinder 16 through the one-way air outlet valve 22. The drive cylinder 16 extends to move the extrusion block 17 downward. The pressure relief valve 19 dynamically adjusts the exhaust volume to maintain a constant pressure in the cylinder, avoids the interference of pressure fluctuations on the data, ensures the uniformity of the detection conditions for different points and different pipes, and improves the comparability of data. Meanwhile, the pressurized gas inside the air supply cylinder 20 is delivered to the pneumatic telescopic rod 26 through the pressure regulating valve 28, which pushes the limiting plate 24 to drive the elastic limiting roller 25 to make elastic contact with the side of the pipe. The elastic limiting roller 25 achieves flexible clamping, which avoids damage to the surface of the pipe by rigid clamping, and prevents deviation through elastic force. Moreover, the clamping force is adaptively adjusted according to the pipe diameter to meet diverse testing needs. During the testing process, excess gas in the drive cylinder 16 is delivered to the arc-shaped cleaning plate 31 through the pressure relief valve 19 and sprayed out through the air outlet 32 ​​to perform all-round air jet cleaning on the periphery of the pipe. No additional power source is required, saving energy and simplifying the structure; effectively removing dust and impurities from the surface of the pipe and avoiding foreign objects from affecting the contact accuracy between the extrusion block 17 and the pipe. After a single pressure test, the lifting mechanism is reset via control switch 38. The electric slider 35 drives the mounting plate 8, the moving plate 36, and the drive cylinder 16 to move upwards synchronously. The upward movement of the mounting plate 8 creates negative pressure in the air supply cylinder 20, and external gas is automatically supplied to the backup pressure through the one-way air inlet valve 21. At the same time, the mounting plate 8 drives the rack 14 to move upwards, driving the transmission gear 12 to rotate in the opposite direction. The one-way bearing 11 releases the power restriction and, through the transmission shaft 9, the spiral gear 39, and the drive gear 7, drives the rotating roller 3 to rotate synchronously, using friction to drive the pipe. The device rotates a preset circumferential distance around its own axis to switch to the next detection point, eliminating the need for manual adjustment of the pipe position and achieving automated switching of detection points, thus saving labor costs. The fixed circumferential movement distance of the pipe ensures uniform distribution of detection points, comprehensively reflecting the compressive strength of the PE pipe at various circumferential positions and improving data integrity. For pipes of different diameters, smaller diameter pipes have a larger rotation angle and fewer detection points, while larger diameter pipes have a smaller rotation angle and automatically increase the number of detection points, enabling adaptive detection of PE pipes of different specifications and improving the versatility and applicability of the device. After the pipe inspection is completed, the inspected pipe is removed. After the pipe is removed, the spring rod 33 is squeezed to release the stored force, pushing the U-shaped plate 29, the arc-shaped cleaning plate 31 and other components to reset, waiting for the next inspection.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for testing the compressive strength of PE pipes during manufacturing, characterized in that, The system includes a working platform (1), a lifting mechanism installed on the working platform (1), a constant pressure pressing structure connected to the lifting mechanism, a pressure supply component connected to the constant pressure pressing structure to stabilize the pressing pressure of the constant pressure pressing structure, two sets of limiting support components for supporting and limiting the pipe to be tested are provided on the working platform (1), and a transmission component is provided on the working platform (1). When the pressure supply component completes a single pressure test and resets upward, the lifting mechanism drives the limiting support component through the transmission component to drive the pipe to be tested to rotate around its own axis, so as to drive the pipe to rotate to the next test position.

2. The compressive strength testing device for PE pipe manufacturing according to claim 1, characterized in that, Both sets of limiting support components include a support (2) fixedly connected to the upper surface of the working platform (1). A horizontally arranged rotating roller (3) and an auxiliary roller (4) are provided above the support (2). Both ends of the rotating roller (3) and the auxiliary roller (4) are rotatably connected to a connecting plate (5). The connecting plate (5) is fixedly connected to the support (2). A horizontally arranged drive shaft (6) is fixedly connected between the two sets of rotating rollers (3). A drive gear (7) that meshes with the transmission component is provided on the drive shaft (6).

3. The compressive strength testing device for PE pipe manufacturing according to claim 2, characterized in that, The transmission assembly includes a vortex (39) that meshes with the drive gear (7) and a mounting plate (8) that is connected to the lifting mechanism for synchronous lifting. One end of the vortex (39) is fixedly connected to a horizontally arranged drive shaft (9). A rotating seat (10) is fixedly connected to the working platform (1). One end of the drive shaft (9) passes through the rotating seat (10) and is connected to a drive gear (12) through a one-way bearing (11). A vertically arranged rack (14) is fixedly connected to the mounting plate (8) through a support plate (13). A through hole (15) corresponding to the rack (14) is provided through the working platform (1). The rack (14) meshes with the drive gear (12) for transmission.

4. The compressive strength testing device for PE pipe manufacturing according to claim 3, characterized in that, The constant pressure pressing structure includes a vertically arranged drive cylinder (16), the output end of which is fixedly connected to a pressing block (17), the drive cylinder (16) is connected to an air inlet connector (18) and a pressure relief valve (19), and the air inlet connector (18) is connected to the pressure supply component through a pipeline.

5. The compressive strength testing device for PE pipe manufacturing according to claim 4, characterized in that, The pressure supply assembly includes an air supply cylinder (20) vertically mounted on the upper surface of the work platform (1). The upper end of the air supply cylinder (20) is fixedly connected to the mounting plate (8), and the lower end of the air supply cylinder (20) is fixedly connected to the work platform (1). The air supply cylinder (20) is connected to a one-way inlet valve (21) and a one-way outlet valve (22). The one-way outlet valve (22) is connected to the inlet connector (18) through a pipeline.

6. The compressive strength testing device for PE pipe manufacturing according to claim 5, characterized in that, The working platform (1) is provided with two sets of slots (23). Two sets of vertically arranged limiting plates (24) are provided in the slots (23). Several sets of vertically arranged elastic limiting rollers (25) are provided on the side of the two sets of limiting plates (24) that are close to each other. The side of the limiting plate (24) that is far away from the elastic limiting rollers (25) is fixedly connected to the inner wall of the slot (23) through a horizontally arranged pneumatic telescopic rod (26). A reset spring (27) is fixedly connected between the fixed end of the pneumatic telescopic rod (26) and the limiting plate (24). The air supply cylinder (20) is connected to a pressure regulating valve (28). The pressure regulating valve (28) is connected to the pneumatic telescopic rod (26) through a pipeline.

7. The compressive strength testing device for PE pipe manufacturing according to claim 6, characterized in that, The upper surface of the working platform (1) is provided with two sets of U-shaped plates (29). The U-shaped plates (29) are rotatably connected with extrusion rollers (30) corresponding to the axial direction of the pipe. An arc-shaped cleaning plate (31) is fixedly connected between the two sets of U-shaped plates (29). Several sets of air outlets (32) are provided on the arc-shaped cleaning plate (31). An extrusion spring rod (33) is fixedly connected between the lower surface of the U-shaped plate (29) and the working platform (1). The arc-shaped cleaning plate (31) is connected to the pressure relief valve (19) through a pipeline.

8. The compressive strength testing device for PE pipe manufacturing according to claim 7, characterized in that, The lifting mechanism includes two sets of vertically arranged electric rails (34), each of which is slidably connected to an electric slider (35). A horizontally arranged movable plate (36) is fixedly connected between the two sets of electric sliders (35). The mounting plate (8) is fixedly connected to the lower part of the electric slider (35), and the fixed end of the drive cylinder (16) is fixedly connected to the lower part of the movable plate (36).

9. The compressive strength testing device for PE pipe manufacturing according to claim 8, characterized in that, Several sets of support legs (37) are fixedly connected to the lower surface of the work platform (1); a control switch (38) is provided on one side of the work platform (1).

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