Universal testing device and method for PPH pipe toughness

Abstract

The present invention relates to the technical field of PPH pipes, and in particular to a universal detection device and a detection method for the toughness of PPH pipes. The device comprises a transmission component 1, a transmission component 2, a visual detection mechanism and a cylindrical cavity. The transmission component 1 and the transmission component 2 are symmetrically arranged at two ends of the cylindrical cavity. A test component is provided at one end of the cylindrical cavity. The test component comprises a pair of pressure rods 1 and a pair of pressure rods 2. The pair of pressure rods 1 are arranged in parallel and oppositely, and the pair of pressure rods 2 are arranged in parallel and oppositely. The pressure rods 1 and the pressure rods 2 are arranged in staggered positions. One end of the cylindrical cavity close to the transmission component 2 is rotatably connected to a pair of rotating columns 1 and a pair of rotating columns 2. The rotating column 1 is fixedly connected to one end of the pressure rod 1, and the rotating column 2 is fixedly connected to the pressure rod 2. The outer end of the cylindrical cavity is rotatably connected to a drive ring. The present invention conveniently and efficiently realizes the universal testing function.

Description

Technical Field

[0001] The present invention relates to the technical field of PPH pipes, and in particular to a universal detection device and a detection method for the toughness of PPH pipes. Background Art

[0002] PPH pipe is a β-modified ordinary PP material with a uniform and delicate Beta crystal structure. It has excellent chemical corrosion resistance, wear resistance, good insulation, high temperature resistance, non-toxicity, light weight, and is easy to transport and install. It is a high-quality product that is more resistant to high temperature, corrosion, and aging than PP pipe.

[0003] PPH pipes have indicators such as impact strength, shear strength, and tensile strength. Destructive tests are used to detect these items. These indicators are all related to the toughness of the material. For the same material, the better the toughness, the better the performance of impact strength, shear strength, and tensile strength. The existing patent application publication number CN118857973A discloses a performance testing device for plastic pipe processing, which includes a base and an operating table fixedly mounted on the upper end of the base. The upper end of the operating table is fixedly mounted with a support frame and a support member, and the support member is located on the left side of the support frame. The left side of the operating table is fixedly mounted with a drive motor, and the drive motor is fixedly mounted on the left side of the operating table. The outer side of the threaded rod is threaded with two sets of moving plates, and the upper end of the moving plate is slidably mounted with a moving cylinder.

[0004] In the above technical solution, the movement of the limiter and the clamping member can complete the automatic loading and unloading process of the plastic pipe. However, the limiter and the clamping member can only process pipes with fixed diameters and have poor versatility.

[0005] Therefore, it is necessary to provide a universal testing device and a testing method for the toughness of PPH pipes, which can achieve the purpose of universal testing. Summary of the Invention

[0006] The object of the present invention is to provide a universal detection device and a detection method for PPH pipe toughness, so as to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a universal detection device and detection method for PPH pipe toughness, comprising a transmission component 1, a transmission component 2, a visual detection mechanism and a cylindrical cavity,

[0008] The first and second transmission components are symmetrically arranged at the two ends of the cylindrical cavity. The first transmission component includes a transport bracket, and a plurality of transmission wheels are arranged on the inner side of the transport bracket. The transmission wheels are used to transport the pipe body to the cylindrical cavity.

[0009] A test assembly is provided at one end of the cylindrical cavity, and the test assembly includes a pair of pressure rods 1 and a pair of pressure rods 2, the pair of pressure rods 1 are arranged in parallel and oppositely, and the pair of pressure rods 2 are arranged in parallel and oppositely, the pressure rods 1 and the pressure rods 2 are staggered, and one end of the cylindrical cavity close to the transmission assembly 2 is rotatably connected to a pair of rotating columns 1 and a pair of rotating columns 2, the rotating column 1 is fixedly connected to one end of the pressure rod 1, and the rotating column 2 is fixedly connected to the pressure rod 2, and one end of the outer side of the cylindrical cavity is rotatably connected to a driving ring, and one side of the driving ring is rotatably connected to four rotating columns 3, the pressure rod 1 and the pressure rod 2 respectively pass through the rotating column 3 and slide with it, and the pair of pressure rods 1 and the pair of pressure rods 2 perform an extrusion test on the pipe body;

[0010] The visual detection mechanism is arranged at the starting end of the second transmission component.

[0011] In one embodiment, a feeding assembly is provided on the inner side of the cylindrical cavity, and the feeding assembly includes a plurality of feeding wheels. A wheel frame is provided on the outer side of the feeding wheel, a spring telescopic rod 1 is provided on one side of the wheel frame, and a square frame is provided on the outer side of the spring telescopic rod 1. The square frame is provided on the inner side of the cylindrical cavity, and the pipe body passes through the plurality of feeding wheels and the feeding wheels drive the pipe body to feed intermittently.

[0012] In one embodiment, a sliding groove is provided on the inner side of the cylindrical cavity, the square frame slides along the sliding groove, a brake rod is fixedly connected to the inner side of the wheel frame, a plurality of arc-shaped angle grooves are provided in a ring shape on the middle side of the feed wheel, a plurality of spring telescopic rods 2 are provided on the outer side of the brake rod, and an arc-shaped tooth is provided at one end of the spring telescopic rod 2, and the arc-shaped tooth is adapted to the arc-shaped angle groove. When the square frame moves toward the test component, the feed wheel drives the pipe body to move synchronously.

[0013] In one embodiment, a pair of side cover plates are fixedly connected to the outer end of the cylindrical cavity, an annular tooth groove is formed on the outer side of the drive ring, and a pair of gears are meshed and connected on both sides of the annular tooth groove, one end of the gear is fixedly connected to a threaded rod, and one end of the threaded rod is rotatably connected to the side cover plate;

[0014] The threaded rod passes through and is threadedly connected to an annular sleeve, one end of the annular sleeve is fixedly connected to a connecting rod, a square opening is opened on the outside of the cylindrical cavity, the connecting rod passes through the square opening and slides with it, and the connecting rod is fixedly connected to the square frame.

[0015] In one embodiment, a rotating assembly is provided inside the cylindrical cavity, and the rotating assembly includes a pair of rotating wheels. The rotating wheels are driven to rotate by a motor assembly. The rotating wheels are attached to the surface of the pipe body and drive it to rotate along the axis.

[0016] In one embodiment, one side of the rotary wheel is rotatably connected to a moving block, and spring telescopic rods three are provided on both sides of the moving block. The spring telescopic rods three are connected to the inner side of the cylindrical cavity, and the moving block passes through the cylindrical cavity and slides with it.

[0017] In one embodiment, an alignment assembly is provided at one end of the cylindrical cavity close to the transmission assembly, and the alignment assembly includes a plurality of alignment rods, one end of the alignment rod is fixedly connected to a top cover, one side of the alignment rod is slidably engaged with a limit block, a reset spring is provided between the top cover and the limit block, a pair of limit rods is provided at one end of the alignment rod, a plurality of triangular plates are fixedly connected to the outside of the cylindrical cavity, a plurality of vertical grooves are opened at one end of the cylindrical cavity, the limit block slides along the vertical groove, and the limit rod rolls along the inclined surface of the triangular plate.

[0018] In one embodiment, a guide telescopic column is provided at one end of some of the limit blocks, and a moving rod is fixedly connected to one end of the limit block corresponding to the position of the moving block. The moving rod passes through the side wall of the cylindrical cavity and slides with it. A pair of movable openings are opened on one side of the cylindrical cavity, and one end of the moving rod extends into the movable opening and is fixedly connected to a push plate. One end of the push plate is fixedly connected to a trapezoidal wedge block, and a trapezoidal groove is opened through the middle side of the moving block. The trapezoidal wedge block is adapted to the trapezoidal groove, and the trapezoidal groove has the same bevel angle as the triangular plate.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention transmits the pipe body to be tested through the transmission wheel, the pipe body moves to the middle of the test assembly, and rotates relative to the cylindrical cavity through the drive ring, driving the four rotating columns three to make circular motion, thereby driving a pair of pressure rods one and a pair of pressure rods two to swing in the needle direction at the same time, while the inner rotating column one and the rotating column two rotate in place to adapt, thereby driving the pressure rods one and the pressure rods two to swing synchronously toward the center position, thereby applying test pressure to the middle pipe body to test its toughness; after the test is completed, the drive ring rotates and resets in the opposite direction, thereby loosening the pipe body, and then the pipe body is unloaded and moved to the transmission assembly two, and passes through the visual inspection mechanism; the visual inspection mechanism inspects the appearance of the tested pipe body, and judges whether its toughness is qualified based on the degree of integrity of its appearance, thereby completing the toughness inspection function of the pipe body, and the next pipe body is then inspected in the same way, realizing continuous and automatic testing functions, greatly improving work efficiency, and can be used to inspect pipe bodies of various diameter specifications, with strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0021] In the attached figure:

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a three-dimensional schematic diagram of the test assembly of the present invention;

[0024] Figure 3 It is an overall cross-sectional schematic diagram of the present invention;

[0025] Figure 4 It is a partial cross-sectional schematic diagram of the cylindrical cavity of the present invention;

[0026] Figure 5 It is a partial cross-sectional schematic diagram of the feed wheel of the present invention;

[0027] Figure 6 It is a three-dimensional schematic diagram of the alignment assembly of the present invention;

[0028] Figure 7 It is a three-dimensional schematic diagram of the alignment rod of the present invention;

[0029] In the figure: 1, cylindrical cavity; 101, pressure rod 1; 102, rotating column 1; 103, pressure rod 2; 104, driving ring; 105, rotating column 2; 106, rotating column 3; 107, sliding groove; 108, side cover;

[0030] 2. Feed wheel; 201. Spring telescopic rod 1; 202. Square frame; 203. Brake rod; 204. Spring telescopic rod 2; 205. Arc-shaped latch; 206. Gear; 207. Threaded rod; 208. Ring sleeve; 209. Connecting rod;

[0031] 3. Rotating wheel; 301. Moving block; 302. Spring telescopic rod 3; 303. Alignment rod; 304. Top cover; 305. Limit block; 306. Limit rod; 307. Triangular plate; 309. Guide telescopic column;

[0032] 4. Moving rod; 401. Movable opening; 402. Trapezoidal wedge;

[0033] 5. Upper pressing wheel;

[0034] 6. Pipe body;

[0035] 7. Transmission component 1; 701. Transport bracket; 702. Transmission wheel;

[0036] 8. Transmission component 2;

[0037] 9. Visual inspection agency. DETAILED DESCRIPTION

[0038] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0039] See also Figure 1-7 The present invention provides a technical solution: a universal detection device and a detection method for PPH pipe toughness, comprising a transmission component 1 7, a transmission component 2 8, a visual detection mechanism 9 and a cylindrical cavity 1.

[0040] The first transmission component 7 and the second transmission component 8 are symmetrically arranged at both ends of the cylindrical cavity 1. The first transmission component 7 includes a transport bracket 701. A plurality of transport wheels 702 are arranged inside the transport bracket 701. The transport wheels 702 are used to transport the pipe body 6 to the cylindrical cavity 1.

[0041] A test assembly is provided at one end of the cylindrical cavity 1, and the test assembly includes a pair of pressure rods 101 and a pair of pressure rods 2 103. The pair of pressure rods 101 are arranged in parallel and oppositely, and the pair of pressure rods 2 103 are arranged in parallel and oppositely. The pressure rods 101 and the pressure rods 2 103 are staggered. One end of the cylindrical cavity 1 close to the transmission component 2 8 is rotatably connected with a pair of rotating columns 102 and a pair of rotating columns 2 105. The rotating column 102 is fixedly connected to one end of the pressure rod 101, and the rotating column 2 105 is fixedly connected to the pressure rod 2 103. One end of the outer side of the cylindrical cavity 1 is rotatably connected with a driving ring 104, and one side of the driving ring 104 is rotatably connected with four rotating columns 3 106. The pressure rods 101 and the pressure rods 2 103 respectively penetrate the rotating column 3 106 and slide with it. The pair of pressure rods 101 and the pair of pressure rods 2 103 perform an extrusion test on the pipe body 6;

[0042] The second transmission component 8 transmits the tested pipe body 6 , and the visual inspection mechanism 9 is set at the starting end of the second transmission component 8 , and the visual inspection mechanism 9 inspects the appearance of the tested pipe body 6 .

[0043] First, the pipe body 6 to be tested is transported by the transport wheel 702 and transported along the transport bracket 701 into the cylindrical cavity 1. In order to ensure the stability of the transmission, an upper pressure wheel 5 is also provided. The upper pressure wheel 5 can be raised and lowered at the end of the transmission component 7 (the upper pressure wheel 5 can be driven to rise and fall by the cylinder component), and can be adjusted to clamp and transport pipe bodies 6 of different diameters, thereby improving the stability and versatility of the transmission of the pipe body 6. Then, when the pipe body 6 moves to the middle of the test component, the toughness test is started. Specifically, the driving ring 104 rotates relative to the cylindrical cavity 1, driving the four rotating columns 3 106 to make a circular motion, thereby driving a pair of pressure rods 101 and a pair of pressure rods 2 103 to swing in the needle direction at the same time, while the inner rotating column 102 and the rotating column 2 105 rotates in place to adapt, thereby driving the pressure rod 1 101 and the pressure rod 2 103 to swing synchronously toward the center position, thereby applying test pressure to the middle pipe body 6 to test its toughness; after the test is completed, the drive ring 104 rotates in the opposite direction to reset, thereby loosening the pipe body 6, and then the pipe body 6 is unloaded and moved to the transmission component 2 8, and passes through the visual inspection mechanism 9; the visual inspection mechanism 9 inspects the appearance of the tested pipe body 6, and judges whether its toughness is qualified based on the degree of integrity of its appearance, thereby completing the toughness detection function of the pipe body 6, and the next pipe body 6 is then inspected in the same way, realizing continuous and automatic testing functions, greatly improving work efficiency, and can be used to detect pipe bodies 6 of various diameters and specifications, with strong versatility.

[0044] A feeding assembly is provided on the inner side of the cylindrical cavity 1, and the feeding assembly includes several feeding wheels 2. A wheel frame is provided on the outer side of the feeding wheel 2, and a spring telescopic rod 201 is provided on one side of the wheel frame. A square frame 202 is provided on the outer side of the spring telescopic rod 201. The square frame 202 is provided on the inner side of the cylindrical cavity 1. The pipe body 6 passes through the several feeding wheels 2 and the feeding wheels 2 drive the pipe body 6 to feed intermittently.

[0045] Preferably, since the pipe body 6 has a certain length, a feeding assembly is provided to improve the comprehensiveness of the inspection. Specifically, when the pipe body 6 is transported into the cylindrical cavity 1, it passes through several feeding wheels 2. Under the action of the spring telescopic rod 201, the feeding wheel 2 is pressed against the surface of the pipe body 6, thereby adapting to pipe bodies 6 of various diameters. Then the testing assembly tests the head end of the pipe body 6. After the test is completed, the pipe body 6 is driven to feed by the feeding wheel 2, so that the testing assembly can test the subsequent part of the pipe body 6. Similarly, the intermittent feeding of the pipe body 6 by the feeding wheel 2 allows the testing assembly to test the entire pipe body 6, thereby improving the comprehensiveness of the test. In addition, in conjunction with the feeding assembly, the pipe body 6 can be further driven to be unloaded onto the transmission assembly 2 8 to achieve transition movement.

[0046] A sliding groove 107 is provided on the inner side of the cylindrical cavity 1, and the square frame 202 slides along the sliding groove 107. A brake rod 203 is fixedly connected to the inner side of the wheel frame. A plurality of arc-shaped angle grooves are provided in a ring shape on the middle side of the feed wheel 2. A plurality of spring telescopic rods 204 are provided on the outer side of the brake rod 203. An arc-shaped tooth 205 is provided at one end of the spring telescopic rod 204. The arc-shaped tooth 205 is adapted to the arc-shaped angle groove. When the square frame 202 moves toward the test component, the feed wheel 2 drives the pipe body 6 to move synchronously.

[0047] Preferably, a one-way locking mechanism is provided on the inner side of the feed wheel 2, and the arcuate angle groove is adapted to the arcuate locking tooth 205, so that the feed wheel 2 and the brake rod 203 can only rotate relative to each other in one direction. When the feed wheel 2 is needed to drive the pipe body 6 to feed, the square frame 202 is moved toward the test assembly, driving several feed wheels 2 to move synchronously. The arcuate angle groove and the arcuate locking tooth 205 on the inner side of the feed wheel 2 are locked with each other at this time, so that the brake rod 203 and the feed wheel 2 are relatively fixed, so that the feed wheel 2 cannot rotate at this time. Through friction, the feed wheel 2 drives the pipe body 6 to move synchronously, and the feeding is completed, and the toughness test can be carried out. Then, when the feed wheel 2 needs to be reset, the square frame 202 moves in the opposite direction, and the feed wheel 2 rotates in the opposite direction relative to the brake rod 203 (the rotation direction is as shown in FIG. Figure 5 As shown), it rolls along the surface of the pipe body 6 and moves to its original position, thereby facilitating the next feeding operation, realizing continuous feeding function and high degree of automation.

[0048] A pair of side cover plates 108 are fixedly connected to the outer end of the cylindrical cavity 1. An annular tooth groove is formed on the outer side of the drive ring 104. A pair of gears 206 are meshed and connected on both sides of the annular tooth groove. One end of the gear 206 is fixedly connected to a threaded rod 207, and one end of the threaded rod 207 is rotatably connected to the side cover plate 108.

[0049] The threaded rod 207 passes through and is threadedly connected to an annular sleeve 208, one end of the annular sleeve 208 is fixedly connected to a connecting rod 209, and a pair of square openings are opened on the outside of the cylindrical cavity 1. The connecting rod 209 passes through the square openings and slides with them. The connecting rod 209 is fixedly connected to the square frame 202.

[0050] Preferably, when the test of the pipe body 6 is completed, the drive ring 104 rotates in the opposite direction to reset, loosening the pipe body 6. At the same time, through the meshing connection, the pair of gears 206 are driven to rotate, driving the pair of threaded rods 207 to rotate, and through the threaded connection, the pair of annular sleeves 208 are driven to displace synchronously. The annular sleeves 208 drive the connecting rods 209 and the square frame 202 to displace synchronously, so that the square frame 202 can drive the feed wheels 2 to move toward the test assembly, drive the pipe body 6 to feed, and then the test can be carried out. The drive ring 104 rotates to retest the pipe body 6. At the same time, it also drives the square frame 202 to reset, and the feed wheel 2 can be reset. That is to say, when the test is completed, the test assembly drives the pressure rod 101 and the pressure rod 2 103 to expand each other, and the pipe body 6 is fed at the same time. On the contrary, the pressure rod 101 and the pressure rod 2 103 are driven to merge with each other, and the feed wheel 2 is automatically reset. The two have good synchronization and a high degree of automation. This can be achieved by setting a motor component to drive any one of the threaded rods 207, saving costs.

[0051] A rotating assembly is provided inside the cylindrical cavity 1 , and the rotating assembly includes a pair of rotating wheels 3 . The rotating wheels 3 are driven to rotate by a motor assembly. The rotating wheels 3 are attached to the surface of the pipe body 6 and drive it to rotate along its axis.

[0052] Preferably, in order to improve the comprehensiveness of the visual inspection mechanism 9 on the surface appearance inspection of the tube body 6 and prevent defects on the lower side or left and right sides of the tube body 6 from being undetected, a rotating component is provided. Specifically, a pair of rotating wheels 3 are provided to fit on the surface of the tube body 6, and the rotating wheels 3 are parallel to the axis of the tube body 6. The rotating wheels 3 are driven to rotate by the motor assembly, which can drive the tube body 6 to rotate synchronously, so that the visual inspection mechanism 9 can observe the outer ring surface of the tube body 6, which is highly practical.

[0053] One side of the rotary wheel 3 is rotatably connected to a moving block 301, and spring telescopic rods 302 are provided on both sides of the moving block 301. The spring telescopic rods 302 are connected to the inner side of the cylindrical cavity 1, and the moving block 301 passes through the cylindrical cavity 1 and slides with it.

[0054] Preferably, a moving block 301 is provided to drive the rotary wheel 3 to move, thereby adjusting for pipe bodies 6 of various diameters, and having strong versatility.

[0055] An alignment component is provided at one end of the cylindrical cavity 1 close to the transmission component 7, and the alignment component includes a plurality of alignment rods 303, one end of the alignment rod 303 is fixedly connected to the top cover 304, one side of the alignment rod 303 is slidably engaged with the limit block 305, a reset spring is provided between the top cover 304 and the limit block 305, a pair of limit rods 306 are provided at one end of the alignment rod 303, a plurality of triangular plates 307 are fixedly connected to the outside of the cylindrical cavity 1, a plurality of vertical grooves are opened at one end of the cylindrical cavity 1, the limit block 305 slides along the vertical groove, and the limit rod 306 rolls along the inclined surface of the triangular plate 307.

[0056] Preferably, since the pipe body 6 needs to pass through several feed wheels 2, when transmitting pipe bodies 6 of various diameters, it is necessary to control the axis of the pipe body 6 to be as close to or coincident with the axis of the cylindrical cavity 1 as possible, so as to facilitate the pipe body 6 to pass through the middle position of several feed wheels 2. Therefore, an alignment component is provided. Specifically, under the action of the reset spring, several alignment rods 303 are merged with each other in the initial state. Under the transmission of the transmission component 7, the head end of the pipe body 6 first contacts the several alignment rods 303, and as the pipe body 6 moves, the alignment rod 303 is pushed to move backward, and the limit block 305 slides along the vertical groove for guidance. At the same time When the tool 302 is in the center, the limit rod 306 rolls along the inclined surface of the triangle plate 307, thereby pulling the alignment rod 303 to move outward until the alignment rod 303 leaves enough space, and the pipe body 6 can pass through the alignment rod 303. Then, under the elastic force of the reset spring, several alignment rods 303 are synchronously pressed against the outside of the pipe body 6 to center it, so that the pipe body 6 can be driven to the center position of the cylindrical cavity 1, thereby facilitating the subsequent passage of several feed wheels 2. In other words, it is only necessary to use the transmission thrust of the transmission component 7 to the pipe body 6 to drive the alignment rod 303 to clamp and position the outside of the pipe body 6, without the need for additional drive components to drive it, which saves costs and is highly practical.

[0057] One end of some of the limit blocks 305 is provided with a guide telescopic column 309, and one end of the limit block 305 corresponding to the position of the moving block 301 is fixedly connected to the moving rod 4, which passes through the side wall of the cylindrical cavity 1 and slides with it. A pair of movable openings 401 are opened on one side of the cylindrical cavity 1, and one end of the moving rod 4 extends into the movable opening 401 and is fixedly connected to a push plate, and one end of the push plate is fixedly connected to a trapezoidal wedge block 402. A trapezoidal groove is opened through the middle side of the moving block 301, and the trapezoidal wedge block 402 is adapted to the trapezoidal groove, and the trapezoidal groove has the same bevel angle as the triangular plate 307.

[0058] Preferably, due to the provision of a spring telescopic rod 302, a pair of rotary wheels 3 are in contact with each other in the initial state. When the displacement of the rotary wheel 3 needs to be controlled, a trapezoidal wedge 402 is provided for rotating and driving the pipe body 6 of various diameters, and a trapezoidal groove is provided on one side of the moving block 301. The two are adapted to each other. When the trapezoidal wedge 402 pushes the moving block 301 along the trapezoidal groove, the rotary wheel 3 can be driven to move. Specifically, one end of the limit block 305 corresponding to the position of the moving block 301 is fixedly connected to the moving rod 4. The moving rod 4 can drive the trapezoidal wedge 402 to move. When the alignment rod 303 moves and expands under the push of the pipe body 6, the limit block 305 is pushed to move synchronously. The limit block 305 pushes the moving rod 4 and the trapezoidal wedge 402. The rotating wheel 3 can be driven to move, and the trapezoidal groove is set to have the same bevel angle as the triangle plate 307. Since the trapezoidal wedge block 402 and the limit rod 306 are displaced synchronously, the rotating wheel 3 and the alignment rod 303 are also displaced synchronously, and the displacement distance is the same. This means that when the alignment rod 303 is displaced a corresponding distance and thus fits against the outside of the pipe body 6, the rotating wheel 3 also moves to a position in contact with the outer surface of the pipe body 6, and the pipe body 6 can be driven to rotate. That is to say, by driving the alignment rod 303, when the alignment rod 303 is clamped on the outer surface of the pipe body 6, the rotating wheel 3 is further controlled to move a corresponding distance, and the pipe body 6 of various diameters can be driven to rotate, with a high degree of automation and strong versatility.

[0059] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or interconnected connections; they can refer to direct connections, internal connectivity between two components, or an interaction between two components. A person of ordinary skill in the art will be able to understand the meaning of the above terms in this application based on the specific circumstances.

[0060] The above describes in detail the universal testing device and testing method for PPH pipe toughness provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is intended only to facilitate understanding of the technical solutions and core concepts of the present application. Those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may be modified or some of the technical features thereof may be replaced by equivalents. However, such modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A universal testing device for PPH pipe toughness, comprising a transmission component 1 (7), a transmission component 2 (8), a visual testing mechanism (9) and a cylindrical cavity (1), characterized in that: The transmission component 1 (7) and the transmission component 2 (8) are symmetrically arranged at two ends of the cylindrical cavity (1); A test assembly is provided at one end of the cylindrical cavity (1), and the test assembly includes a pair of pressure rods 1 (101) and a pair of pressure rods 2 (103), wherein the pair of pressure rods 1 (101) are arranged in parallel and opposite directions, and the pair of pressure rods 2 (103) are arranged in parallel and opposite directions, and the pressure rods 1 (101) and the pressure rods 2 (103) are arranged in staggered positions. One end of the cylindrical cavity (1) close to the transmission assembly 2 (8) is rotatably connected to a pair of rotating columns 1 (102) and a pair of rotating columns 2 (105), wherein the rotating column 1 (102) It is fixedly connected to one end of the pressure rod 1 (101), the rotating column 2 (105) is fixedly connected to the pressure rod 2 (103), one end of the outer side of the cylindrical cavity (1) is rotatably connected to the driving ring (104), one side of the driving ring (104) is rotatably connected to four rotating columns 3 (106), the pressure rod 1 (101) and the pressure rod 2 (103) respectively pass through the rotating column 3 (106) and slide with it, and a pair of pressure rods 1 (101) and a pair of pressure rods 2 (103) perform an extrusion test on the pipe body (6); The visual detection mechanism (9) is arranged at the starting end of the second transmission component (8); A feeding assembly is provided on the inner side of the cylindrical cavity (1), and the feeding assembly includes a plurality of feeding wheels (2). A wheel frame is provided on the outer side of the feeding wheel (2). A spring telescopic rod (201) is provided on one side of the wheel frame. A square frame (202) is provided on the outer side of the spring telescopic rod (201). The square frame (202) is provided on the inner side of the cylindrical cavity (1). The pipe body (6) passes through the plurality of feeding wheels (2), and the feeding wheels (2) drive the pipe body (6) to feed intermittently. A sliding groove (107) is provided on the inner side of the cylindrical cavity (1), and the square frame (202) slides along the sliding groove (107). A brake rod (203) is fixedly connected to the inner side of the wheel frame. A plurality of arc-shaped angle grooves are provided in a ring shape on the middle side of the feed wheel (2). A plurality of spring telescopic rods (204) are provided on the outer side of the brake rod (203). An arc-shaped tooth (205) is provided at one end of the spring telescopic rod (204). The arc-shaped tooth (205) is adapted to the arc-shaped angle groove. When the square frame (202) moves toward the test component, the feed wheel (2) drives the pipe body (6) to move synchronously.

2. The universal testing device for PPH pipe toughness according to claim 1, characterized in that: The transmission component 1 (7) includes a transport bracket (701), and a plurality of transmission wheels (702) are provided on the inner side of the transport bracket (701). The transmission wheels (702) are used to transmit the pipe body (6) to the cylindrical cavity (1).

3. The universal testing device for PPH pipe toughness according to claim 1, characterized in that: The outer end of the cylindrical cavity (1) is fixedly connected to a pair of side cover plates (108); an annular tooth groove is provided on the outer side of the drive ring (104); a pair of gears (206) are meshedly connected on both sides of the annular tooth groove; one end of the gear (206) is fixedly connected to a threaded rod (207); and one end of the threaded rod (207) is rotatably connected to the side cover plate (108); The threaded rod (207) passes through and is threadedly connected to an annular sleeve (208), one end of the annular sleeve (208) is fixedly connected to a connecting rod (209), the outer side of the cylindrical cavity (1) is provided with a square opening, the connecting rod (209) passes through the square opening and is slidably engaged therewith, and the connecting rod (209) is fixedly connected to the square frame (202).

4. The universal testing device for PPH pipe toughness according to claim 1, characterized in that: A rotary assembly is provided on the inner side of the cylindrical cavity (1), and the rotary assembly includes a pair of rotary wheels (3). The rotary wheels (3) are driven to rotate by a motor assembly. The rotary wheels (3) are attached to the surface of the pipe body (6) and drive it to rotate along its axis.

5. The universal testing device for PPH pipe toughness according to claim 4, characterized in that: One side of the rotary wheel (3) is rotatably connected to a moving block (301), and two sides of the moving block (301) are provided with spring telescopic rods (302). The spring telescopic rods (302) are connected to the inner side of the cylindrical cavity (1), and the moving block (301) passes through the cylindrical cavity (1) and is slidably engaged therewith.

6. The universal testing device for PPH pipe toughness according to claim 5, characterized in that: An alignment component is provided at one end of the cylindrical cavity (1) close to the transmission component (7), and the alignment component includes a plurality of alignment rods (303), one end of the alignment rod (303) is fixedly connected to a top cover (304), one side of the alignment rod (303) is slidably engaged with a limit block (305), a reset tension spring is provided between the top cover (304) and the limit block (305), a pair of limit rods (306) is provided at one end of the alignment rod (303), a plurality of triangular plates (307) are fixedly connected to the outside of the cylindrical cavity (1), a plurality of vertical slots are opened at one end of the cylindrical cavity (1), the limit block (305) slides along the vertical slots, and the limit rod (306) rolls along the inclined surface of the triangular plate (307).

7. The universal testing device for PPH pipe toughness according to claim 6, characterized in that: One end of some of the limit blocks (305) is provided with a guide telescopic column (309), and one end of the limit block (305) corresponding to the position of the moving block (301) is fixedly connected to a moving rod (4), and the moving rod (4) passes through the side wall of the cylindrical cavity (1) and slides with it. A pair of movable openings (401) are opened on one side of the cylindrical cavity (1), and one end of the moving rod (4) extends into the movable opening (401) and is fixedly connected to a push plate, and one end of the push plate is fixedly connected to a trapezoidal wedge block (402), and a trapezoidal groove is opened through the middle side of the moving block (301), and the trapezoidal wedge block (402) is adapted to the trapezoidal groove, and the trapezoidal groove has the same inclined angle as the triangular plate (307).

8. The detection method of the universal detection device for PPH pipe toughness according to claim 2, characterized in that The following steps are involved: S1, the pipe body (6) to be tested is transported by the transport wheel (702), and is transported along the transport bracket (701) into the cylindrical cavity (1), and the pipe body (6) is moved to the middle of the test assembly to start the toughness test; S2, by rotating the driving ring (104) relative to the cylindrical cavity (1), the four rotating columns (106) are driven to make circular motion, and the four rotating columns (106) respectively drive a pair of pressure rods (101) and a pair of pressure rods (103) to swing in the same direction, thereby applying a test pressure to the middle pipe body (6); S3, the tested pipe body (6) is unloaded and moved to the second transmission component (8), and passes through the visual inspection mechanism (9); S4. The visual inspection mechanism (9) inspects the appearance of the tested pipe body (6) to determine whether its toughness is qualified.

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