Universal detection device for toughness of PPH pipe and detection method thereof

Abstract

The invention relates to the technical field of PPH pipes, in particular to a universal detection device for the toughness of PPH pipes and a detection method thereof.The universal detection device comprises a first transmission assembly, a second transmission assembly, a visual detection mechanism and a cylindrical cavity, and the first transmission assembly and the second transmission assembly are symmetrically arranged at the two ends of the cylindrical cavity; a testing assembly is arranged at one end of the cylindrical cavity and comprises a pair of first pressing rods and a pair of second pressing rods, the first pressing rods are arranged in parallel and oppositely, the second pressing rods are arranged in parallel and oppositely, and the first pressing rods and the second pressing rods are arranged in a staggered mode; the end, close to the second conveying assembly, of the cylindrical cavity is rotationally connected with a pair of first rotating columns and a pair of second rotating columns, the first rotating columns are fixedly connected with one ends of first pressing rods, the second rotating columns are fixedly connected with second pressing rods, and one end of the outer side of the cylindrical cavity is rotationally connected with a driving ring. And a general test function is conveniently and efficiently realized.

Description

Technical Field

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

[0002] PPH pipes are obtained by β-modifying ordinary PP materials to have a uniform and delicate Beta crystal structure. They have excellent chemical corrosion resistance, wear resistance, good insulation, high temperature resistance, non-toxicity, light weight, and are convenient for transportation and installation. This is a high-quality product that is more resistant to high temperature, corrosion, and aging than PP pipes.

[0003] PPH pipes have indicators such as anti-stamping strength, anti-shearing strength, and anti-tensile strength. For testing these items, destructive tests are all adopted. And these indicators are all related to the toughness of the material. For the same material, the better the toughness, the better the properties such as anti-stamping strength, anti-shearing strength, and anti-tensile strength. In the prior patent application publication number CN118857973A, a performance detection device for plastic pipe processing is disclosed, including a base and an operation table fixedly installed at the upper end of the base. A support frame and a support member are fixedly installed at the upper end of the operation table, and the support member is located on the left side of the support frame. A driving motor is fixedly installed on the left side of the operation table, and a threaded rod is rotatably installed on the left side of the operation table. Two sets of moving plates are threadedly installed on the outer side of the threaded rod, and a moving cylinder is slidably installed at the upper end of the moving plate.

[0004] In the above technical solution, through the limiting member and the clamping member, the automatic feeding and discharging process of the plastic pipe can be completed by the movement of the limiting member and the clamping member. However, the limiting member and the clamping member can only process pipes with a fixed diameter size, and the versatility is poor.

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

[0006] The purpose of the present invention is to provide a general detection device for the toughness of PPH pipes and its detection method to solve the problems raised in the above background art.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: A general detection device for the toughness of PPH pipes and its detection method includes a first transmission component, a second transmission component, a vision detection mechanism, and a cylindrical cavity. The first transmission component and the second transmission component are symmetrically arranged at both ends of the cylindrical cavity. The first transmission component includes a transportation bracket, and several transmission wheels are arranged inside the transportation bracket. The transmission wheels are used to transport the pipe body to the cylindrical cavity. One end of the cylindrical cavity is provided with a testing component, which includes a pair of first pressing rods and a pair of second pressing rods. The pair of first pressing rods are arranged in parallel and oppositely, and the pair of second pressing rods are arranged in parallel and oppositely. The first pressing rods and the second pressing rods are arranged with their positions staggered. At one end of the cylindrical cavity close to the second transmission component, a pair of first rotating columns and a pair of second rotating columns are rotatably connected. One end of the first rotating column is fixedly connected to the first pressing rod, and the second rotating column is fixedly connected to the second pressing rod. One end of the outer side of the cylindrical cavity is rotatably connected with a driving ring. One side of the driving ring is rotatably connected with four third rotating columns. The first pressing rods and the second pressing rods respectively penetrate through the third rotating columns and are in sliding fit with them. The pair of first pressing rods and the pair of second pressing rods perform extrusion testing on the pipe body. The visual inspection mechanism is arranged at the starting end of the second transmission component.

[0008] In one embodiment, a feeding component is arranged inside the cylindrical cavity. The feeding component includes a plurality of feeding wheels. A wheel frame is arranged on the outer side of the feeding wheel. One side of the wheel frame is provided with a first spring telescopic rod. A square frame is arranged on the outer side of the first spring telescopic rod. The square frame is arranged inside the cylindrical cavity. The pipe body passes through a plurality of feeding wheels, and the feeding wheels drive the pipe body to feed intermittently.

[0009] In one embodiment, a sliding groove is opened inside the cylindrical cavity. The square frame slides along the sliding groove. A braking rod is fixedly connected to the inner side of the wheel frame. A plurality of arc-shaped angular grooves are annularly opened in the middle of the feeding wheel. A plurality of second spring telescopic rods are arranged on the outer side of the braking rod. One end of the second spring telescopic rod is provided with an arc-shaped clamping tooth, which is adapted to the arc-shaped angular groove. When the square frame displaces towards the testing component, the feeding wheel drives the pipe body to displace synchronously.

[0010] In one embodiment, a pair of side covers are fixedly connected to the outer end of the cylindrical cavity. An annular tooth groove is opened on the outer side of the driving ring. A pair of gears are meshed and connected to both sides of the annular tooth groove. One end of the gear is fixedly connected to a threaded rod. One end of the threaded rod is rotatably connected to the side cover. The threaded rod penetrates through and is threadedly connected to an annular sleeve. One end of the annular sleeve is fixedly connected to a connecting rod. A pair of square openings are opened on the outer side of the cylindrical cavity. The connecting rod passes through the square opening and is in sliding fit with it. The connecting rod is fixedly connected to the square frame.

[0011] In one embodiment, a rotating component is arranged inside the cylindrical cavity. The rotating component includes a pair of rotating wheels, which are driven to rotate by a motor component. The rotating wheels are attached to the surface of the pipe body and drive it to rotate around its axis.

[0012] In one embodiment, a moving block is rotatably connected to one side of the rotary wheel. Spring telescopic rods III are arranged on both sides of the moving block and are connected to the inner side of the cylindrical cavity. The moving block penetrates through the cylindrical cavity and is in sliding fit with it.

[0013] In one embodiment, an alignment component is arranged at one end of the cylindrical cavity close to the transmission component I. The alignment component includes a number of alignment rods. One end of each alignment rod is fixedly connected to a top cover. A limiting block is in sliding fit with one side of each alignment rod. A reset tension spring is arranged between the top cover and the limiting block. A pair of limiting rods are arranged at one end of each alignment rod. A number of triangular plates are fixedly connected to the outer side of the cylindrical cavity. A number of vertical grooves are formed at one end of the cylindrical cavity. The limiting block slides along the vertical grooves, and the limiting rod rolls along the inclined surface of the triangular plate.

[0014] In one embodiment, a guiding telescopic column is arranged at one end of some of the limiting blocks. A moving rod is fixedly connected to one end of the limiting block corresponding to the position of the moving block. The moving rod penetrates through the side wall of the cylindrical cavity and is in sliding fit with it. A pair of movable openings are formed on one side of the cylindrical cavity. One end of the moving rod extends into the movable opening and is fixedly connected to a push plate. A trapezoidal wedge block is fixedly connected to one end of the push plate. A trapezoidal groove is formed through the middle of the moving block. The trapezoidal wedge block is adapted to the trapezoidal groove, and the trapezoidal groove has the same inclined surface angle as the inclined surface of the triangular plate.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, the transmission wheel is used to transmit the pipe body to be tested. The pipe body moves to the middle of the test component. By rotating the driving ring relative to the cylindrical cavity, four rotating columns III are driven to make circular motions, thereby driving a pair of pressure rods I and a pair of pressure rods II to swing in the clockwise direction respectively. The inner rotating column I and rotating column II rotate in place for adaptation, so as to drive the pressure rods I and pressure rods II to swing synchronously towards the central position, thereby applying a test pressure to the pipe body in the middle and testing its toughness; after the test is completed, the driving ring rotates in the reverse direction to reset, thereby releasing the pipe body. Then the pipe body is unloaded and moves onto the transmission component II 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 according to the integrity of its appearance, so as to complete the toughness detection function of the pipe body. The next pipe body is then detected in the same way, realizing a continuous and automatic test function, greatly improving the work efficiency, and can detect pipe bodies of various diameter specifications, with strong versatility. Description of the Drawings

[0016] The following will make the technical solutions and other beneficial effects of the present application obvious by describing the specific embodiments of the present application in detail in conjunction with the drawings.

[0017] In the accompanying drawings: Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a three-dimensional schematic diagram of the test component of the present invention; Figure 3 is a schematic cross-sectional view of the overall structure of the present invention; Figure 4 is a partial cross-sectional schematic diagram of the cylindrical cavity of the present invention; Figure 5 is a partial cross-sectional schematic diagram of the feed wheel of the present invention; Figure 6 is a three-dimensional schematic diagram of the alignment component of the present invention; Figure 7 is a three-dimensional schematic diagram of the alignment rod of the present invention; In the figure: 1, cylindrical cavity; 101, first pressing rod; 102, first rotating column; 103, second pressing rod; 104, driving ring; 105, second rotating column; 106, third rotating column; 107, sliding groove; 108, side cover plate; 2, feed wheel; 201, first spring telescopic rod; 202, square frame; 203, braking rod; 204, second spring telescopic rod; 205, arc-shaped teeth; 206, gear; 207, threaded rod; 208, annular sleeve; 209, connecting rod; 3, rotary wheel; 301, moving block; 302, third spring telescopic rod; 303, alignment rod; 304, top cover; 305, limiting block; 306, limiting rod; 307, triangular plate; 309, guiding telescopic column; 4, moving rod; 401, movable opening; 402, trapezoidal wedge block; 5, upper pressing wheel; 6, pipe body; 7, first transmission component; 701, transportation bracket; 702, transmission wheel; 8, second transmission component; 9, visual inspection mechanism. Detailed implementation manners

[0018] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between 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 may be aware of the application of other processes and / or the use of other materials.

[0019] 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. 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. 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; 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 .

[0020] 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. To ensure the stability of the transport, an upper pressure wheel 5 is also provided. The upper pressure wheel 5 is arranged at the end of the first transport assembly 7 in a liftable manner (the upper pressure wheel 5 can be driven to lift by a cylinder assembly), and can be adjusted to clamp and transport pipe bodies 6 of different diameters, thereby improving the stability and versatility of the transport of the pipe body 6. Then, when the pipe body 6 moves to the middle of the test assembly, the toughness test begins. Specifically, by rotating the drive ring 104 relative to the cylindrical cavity 1, the four third rotating columns 106 are driven to perform circular motion, thereby driving a pair of first pressure rods 101 and a pair of second pressure rods 103 to swing in the same direction at the same time. The inner first rotating column 102 and the second rotating column 105 rotate in place to adapt, thereby driving the first pressure rod 101 and the second pressure rod 103 to swing synchronously towards the central position, thereby applying a test pressure to the pipe body 6 in the middle and testing its toughness; after the test is completed, the drive ring 104 rotates in the reverse direction to reset, thereby releasing the pipe body 6. Then, the pipe body 6 is unloaded and moves onto the second transport assembly 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 according to the integrity of its appearance, thereby completing the toughness detection function of the pipe body 6. The next pipe body 6 is then detected in the same way, realizing a continuous and automatic test function, greatly improving the work efficiency, and can detect pipe bodies 6 of various diameter specifications, with strong versatility.

[0021] An inlet feeding assembly is arranged inside the cylindrical cavity 1. The inlet feeding assembly includes a number of feeding wheels 2. A wheel frame is arranged on the outer side of the feeding wheels 2. A first spring telescopic rod 201 is arranged on one side of the wheel frame. A square frame 202 is arranged on the outer side of the first spring telescopic rod 201. The square frame 202 is arranged inside the cylindrical cavity 1. The pipe body 6 passes through a number of feeding wheels 2 and the feeding wheels 2 drive the pipe body 6 to feed intermittently.

[0022] Preferably, since the pipe body 6 has a certain length, to improve the comprehensiveness of the detection, an inlet feeding assembly is provided. Specifically, when the pipe body 6 is transported into the cylindrical cavity 1, it passes through a number of feeding wheels 2. Under the action of the first spring telescopic rod 201, the feeding wheels 2 are attached to and pressed against the surface of the pipe body 6, thereby realizing the adaptation to pipe bodies 6 of various diameter sizes. Then, the test assembly tests the head end part of the pipe body 6. After the test is completed, the feeding wheels 2 drive the pipe body with 6 to feed, so that the test assembly can test the subsequent parts of the pipe body 6. By analogy, through the intermittent feeding of the pipe body 6 by the feeding wheels 2, the test assembly tests the whole pipe body 6, improving the comprehensiveness of the test. And in cooperation with the inlet feeding assembly, the pipe body 6 can be further driven to be unloaded onto the second transport assembly 8 to realize the transition movement.

[0023] A sliding groove 107 is provided on the inner side of the cylindrical cavity 1. 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 number of arc-shaped angular grooves are annularly provided in the middle of the feed wheel 2. A number of second spring telescopic rods 204 are provided on the outer side of the brake rod 203. One end of the second spring telescopic rod 204 is provided with an arc-shaped engaging tooth 205. The arc-shaped engaging tooth 205 is adapted to the arc-shaped angular groove. When the square frame 202 displaces towards the test assembly direction, the feed wheel 2 drives the pipe body 6 to displace synchronously.

[0024] Preferably, a one-way locking mechanism is provided on the inner side of the feed wheel 2. The arc-shaped angular groove is adapted to the arc-shaped engaging tooth 205, so that only one-way relative rotation is possible between the feed wheel 2 and the brake rod 203. When it is necessary to drive the pipe body 6 to feed by the feed wheel 2, the square frame 202 displaces towards the test assembly direction, driving a number of feed wheels 2 to move synchronously. At this time, the arc-shaped angular groove on the inner side of the feed wheel 2 and the arc-shaped engaging tooth 205 are locked to each other, making the brake rod 203 and the feed wheel 2 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 to complete the feeding, and then the toughness test can be carried out. Then when the feed wheel 2 needs to be reset, the square frame 202 moves in the reverse direction, and the feed wheel 2 rotates in the opposite direction relative to the brake rod 203 (the rotation direction is as Figure 5 shown), and thus rolls along the surface of the pipe body 6 and moves to the original position, facilitating the next feeding operation and realizing the continuous feeding function with high automation.

[0025] A pair of side covers 108 are fixedly connected to the outer end of the cylindrical cavity 1. An annular tooth groove is provided on the outer side of the driving 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. One end of the threaded rod 207 is rotatably connected to the side cover 108; The threaded rod 207 penetrates 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. A pair of square openings are provided on the outer side of the cylindrical cavity 1. The connecting rod 209 passes through the square opening and is slidably matched with it. The connecting rod 209 is fixedly connected to the square frame 202.

[0026] Preferably, after the test of the pipe body 6 is completed, the driving ring 104 rotates in the reverse direction to reset, releasing the pipe body 6. At the same time, through meshing connection, a pair of gears 206 are driven to rotate, driving a pair of threaded rods 207 to rotate. Through threaded connection, a pair of annular sleeves 208 are driven to displace synchronously. The annular sleeves 208 drive the connecting rod 209 and the square frame 202 to displace synchronously, so that the square frame 202 drives a number of feeding wheels 2 to displace towards the test component, driving the pipe body 6 to feed. Then the test can be carried out. The driving ring 104 rotates to retest the pipe body 6. At the same time, the square frame 202 is also driven to reset, and the feeding wheels 2 can be reset. That is to say, when the test is completed, the test component drives the first pressing rod 101 and the second pressing rod 103 to expand from each other, and at the same time the pipe body 6 feeds. On the contrary, driving the first pressing rod 101 and the second pressing rod 103 to merge with each other, the feeding wheels 2 automatically reset. The two have good synchronism and high automation degree. It can be achieved by setting the motor component to drive any one of the threaded rods 207, saving costs.

[0027] A rotary component is arranged inside the cylindrical cavity 1. The rotary component includes a pair of rotary wheels 3. The rotary wheels 3 are driven to rotate by a motor component. The rotary wheels 3 are attached to the surface of the pipe body 6 and drive it to rotate around its axis.

[0028] Preferably, in order to improve the comprehensiveness of the visual inspection mechanism 9 for inspecting the surface appearance of the pipe body 6 and prevent defects on the lower side or left and right sides of the pipe body 6 from not being detected, a rotary component is provided. Specifically, a pair of rotary wheels 3 are arranged to fit on the surface of the pipe body 6, and the rotary wheels 3 are parallel to the axis of the pipe body 6. By driving the rotary wheels 3 to rotate through the motor component, the pipe body 6 can be driven to rotate synchronously, so that the visual inspection mechanism 9 can observe the outer ring surface of the pipe body 6, which has strong practicability.

[0029] One side of the rotary wheel 3 is rotatably connected with a moving block 301. Both sides of the moving block 301 are provided with spring telescopic rods three 302. The spring telescopic rods three 302 are connected to the inside of the cylindrical cavity 1. The moving block 301 penetrates through the cylindrical cavity 1 and is slidably matched with it.

[0030] Preferably, a moving block 301 is provided, which can drive the rotary wheel 3 to move, so as to adjust for pipe bodies 6 of various diameter sizes, and has strong versatility.

[0031] One end of the cylindrical cavity 1 close to the first transmission component 7 is provided with an alignment component. The alignment component includes a number of alignment rods 303. One end of the alignment rod 303 is fixedly connected with a top cover 304. A limiting block 305 is slidably matched with one side of the alignment rod 303. A return spring is arranged between the top cover 304 and the limiting block 305. A pair of limiting rods 306 are arranged at one end of the alignment rod 303. A number of triangular plates 307 are fixedly connected to the outside of the cylindrical cavity 1. A number of vertical grooves are formed at one end of the cylindrical cavity 1. The limiting block 305 slides along the vertical grooves, and the limiting rod 306 rolls along the inclined surface of the triangular plate 307.

[0032] Preferably, since the pipe body 6 needs to pass through between a number of feed wheels 2, when transmitting pipe bodies 6 of various diameter sizes, it is necessary to control the axis of the pipe body 6 to be close to or coincide with the axis of the cylindrical cavity 1 as much as possible, so as to facilitate the pipe body 6 to pass through the middle position of a number of feed wheels 2. Therefore, an alignment component is provided. Specifically, under the action of the return spring, a number of alignment rods 303 are combined with each other in the initial state. Under the transmission of the first transmission component 7, the head end of the pipe body 6 first contacts a number of alignment rods 303, and as the pipe body 6 moves, it pushes the alignment rods 303 to displace backward. The limiting block 305 slides along the vertical grooves for guiding. At the same time, the limiting rod 306 rolls along the inclined surface of the triangular plate 307, thereby pulling the alignment rods 303 to displace outward until enough space is vacated by the alignment rods 303, and the pipe body 6 can pass through the alignment rods 303. Then, under the elastic force of the return spring, a number of alignment rods 303 simultaneously abut against the outside of the pipe body 6 and center it, so as to drive the pipe body 6 to be in the central position of the cylindrical cavity 1, thus facilitating subsequent passing through a number of feed wheels 2. That is to say, only by using the transmission thrust of the first transmission component 7 on the pipe body 6, the alignment rods 303 can be driven to clamp and position the outside of the pipe body 6, without the need for an additional driving component for driving, saving costs and having strong practicability.

[0033] One end of some of the limiting blocks 305 is provided with a guiding telescopic column 309. One end of the limiting block 305 corresponding to the position of the moving block 301 is fixedly connected with a moving rod 4. The moving rod 4 penetrates through the side wall of the cylindrical cavity 1 and is slidably matched with it. A pair of movable openings 401 are formed on one side of the cylindrical cavity 1. One end of the moving rod 4 extends into the movable opening 401 and is fixedly connected with a push plate. One end of the push plate is fixedly connected with a trapezoidal wedge block 402. A trapezoidal groove is formed through the middle side of the moving block 301. The trapezoidal wedge block 402 is adapted to the trapezoidal groove, and the trapezoidal groove has the same inclined surface angle as the inclined surface of the triangular plate 307.

[0034] Preferably, since the spring telescopic rod three 302 is provided, the pair of rotary wheels 3 are in contact with each other in the initial state. When it is necessary to control the displacement of the rotary wheels 3 so as to perform rotary drive on the pipe body 6 with various diameter sizes, a trapezoidal wedge block 402 is provided, and a trapezoidal groove is formed on one side of the moving block 301, and the two are mutually adapted. When the trapezoidal wedge block 402 pushes the moving block 301 along the trapezoidal groove, the rotary wheels 3 can be driven to displace. Specifically, one end of the limiting block 305 corresponding to the position of the moving block 301 is fixedly connected with a moving rod 4, and the moving rod 4 can drive the trapezoidal wedge block 402 to displace. When the alignment rod 303 moves and unfolds under the push of the pipe body 6, the limiting block 305 is pushed to move synchronously, and the limiting block 305 pushes the moving rod 4 and the trapezoidal wedge block 402, so as to drive the rotary wheels 3 to displace. Moreover, the trapezoidal groove is set to have the same inclined plane angle as the triangular plate 307, and since the trapezoidal wedge block 402 and the limiting rod 306 displace synchronously, the rotary wheels 3 and the alignment rod 303 also displace synchronously and the displacement distances are the same. This means that when the alignment rod 303 displaces a corresponding distance and thus fits on the outer side of the pipe body 6, the rotary wheels 3 also move to the position in contact with the outer surface of the pipe body 6, and thus the rotary drive of the pipe body 6 can be performed. That is to say, through the drive of the alignment rod 303, when the alignment rod 303 clamps on the outer surface of the pipe body 6, the movement of the rotary wheels 3 is further controlled by a corresponding distance, and thus the rotary drive can be performed on the pipe body 6 with various diameter sizes, with high automation and strong versatility.

[0035] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that can communicate with each other; it can be directly connected, the communication inside two components, or the interaction relationship between two components. For those of ordinary skill in the art, the meanings of the above terms in the present application can be understood according to specific situations.

[0036] The above has introduced in detail the general detection device and its detection method for the toughness of PPH pipes provided by the embodiments of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate 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).

2. The general detection device for the toughness of PPH pipes 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), and the transmission wheels (702) are used to transmit the pipe body (6) to the cylindrical cavity (1); 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), and 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.

3. The general detection device for the toughness of PPH pipes according to claim 2, characterized in that: 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.

4. The general detection device for the toughness of PPH pipes according to claim 3, wherein: A pair of side cover plates (108) are fixedly connected to the outer end of the cylindrical cavity (1). An annular tooth groove is provided on the outer side of the driving ring (104). A pair of gears (206) are meshed and connected to both sides of the annular tooth groove. One end of the gear (206) is fixedly connected to a threaded rod (207). One end of the threaded rod (207) is rotatably connected to the side cover plate (108). The threaded rod (207) penetrates 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). A pair of square openings are provided on the outer side of the cylindrical cavity (1). The connecting rod (209) passes through the square opening and is slidably matched with it. The connecting rod (209) is fixedly connected to the square frame (202).

5. The general detection device for the toughness of PPH pipes according to claim 1, characterized in that: A rotary assembly is arranged inside the cylindrical cavity (1). 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 around its axis.

6. The general detection device for the toughness of PPH pipes according to claim 5, wherein: A moving block (301) is rotatably connected to one side of the rotary wheel (3). Spring telescopic rods three (302) are arranged on both sides of the moving block (301). The spring telescopic rods three (302) are connected to the inside of the cylindrical cavity (1). The moving block (301) penetrates through the cylindrical cavity (1) and is slidably matched with it.

7. The general detection device for the toughness of PPH pipes according to claim 6, characterized in that: An alignment component is arranged at one end of the cylindrical cavity (1) close to the transmission component one (7). 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). A limiting block (305) is slidably matched with one side of the alignment rod (303). A return tension spring is arranged between the top cover (304) and the limiting block (305). A pair of limiting rods (306) are arranged at one end of the alignment rod (303). A plurality of triangular plates (307) are fixedly connected to the outer side of the cylindrical cavity (1). A plurality of vertical grooves are provided at one end of the cylindrical cavity (1). The limiting block (305) slides along the vertical groove. The limiting rod (306) rolls along the inclined surface of the triangular plate (307).

8. The general detection device for the toughness of PPH pipes according to claim 7, characterized in that: One end of some of the limiting blocks (305) is provided with a guiding telescopic column (309). One end of the limiting block (305) corresponding to the position of the moving block (301) is fixedly connected to a moving rod (4). The moving rod (4) penetrates through the side wall of the cylindrical cavity (1) and is slidably matched with it. A pair of movable openings (401) are provided on one side of the cylindrical cavity (1). One end of the moving rod (4) extends into the movable opening (401) and is fixedly connected to a push plate. One end of the push plate is fixedly connected to a trapezoidal wedge block (402). A trapezoidal groove is provided through the middle of the moving block (301). The trapezoidal wedge block (402) is adapted to the trapezoidal groove. The trapezoidal groove has the same inclined surface angle as the triangular plate (307).

9. The detection method of the general detection device for the toughness of PPH pipes according to claim 2, characterized in that Including the following steps: S1. The pipe body (6) to be tested is transported by a transport wheel (702), and is transported along a transport bracket (701) into a cylindrical cavity (1), and the pipe body (6) moves to the middle of the test assembly, and the toughness test is started; S2. The drive ring (104) rotates relative to the cylindrical cavity (1), driving four rotating columns three (106) to perform circular motion, and the four rotating columns three (106) respectively drive a pair of pressure rods one (101) and a pair of pressure rods two (103) to swing in the same direction, so as to apply a test pressure to the pipe body (6) in the middle; S3. After the test, the pipe body (6) is unloaded and moves onto the second transport assembly (8) and passes through the visual inspection mechanism (9); S4. The visual inspection mechanism (9) inspects the appearance of the pipe body (6) after the test to determine whether its toughness is qualified.

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