Device for detecting bending resistance of plastic pipe

Abstract

The utility model discloses a device for detecting the bending resistance of a plastic pipe, and relates to the technical field of plastic pipes. The device comprises a working table, a moving mechanism is arranged in the working table, clamping mechanisms are symmetrically arranged at the top of the moving mechanism, a plastic pipe is arranged between the two clamping mechanisms, an air cylinder is arranged at the top of the working table, a pressure detector is fixedly installed at one end of the air cylinder, and a pressure sensor is fixedly installed at the other end of the air cylinder. A pressing block is fixedly installed at the bottom of the pressure detector, the end, close to the plastic pipe, of the pressing block is arranged in an arc shape, and an anti-sliding block is fixedly installed on the plastic pipe. According to the length of the plastic pipe to be measured, the moving mechanism is started, when the moving mechanism operates, the two clamping mechanisms symmetrically arranged on the top of the moving mechanism can be driven to be close to or far away from each other, and therefore the distance between the two clamping mechanisms is adjusted to adapt to plastic pipes of different length specifications; and it is ensured that the plastic pipe can be stably placed between the two clamping mechanisms.

Description

Technical Field

[0001] This utility model belongs to the field of plastic pipe technology, and specifically relates to a device for testing the bending resistance of plastic pipes. Background Technology

[0002] Plastic pipes are widely used in many fields such as modern industry and construction due to their numerous advantages, including corrosion resistance, light weight, and low cost. However, the bending resistance of plastic pipes is crucial to their reliability and safety in actual use, thus requiring precise testing equipment to evaluate their bending resistance.

[0003] When a bending force is applied to a plastic tube, the tube is prone to lateral displacement or even slippage due to the lack of reliable restraint. This not only leads to inaccurate test results but may also damage the testing equipment and affect the smooth progress of the test. Traditional testing devices are often fixed structures designed for plastic tubes of a specific length. When faced with plastic tubes of varying lengths, the clamping and support positions of the testing device cannot be flexibly adjusted.

[0004] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a device for testing the bending resistance of plastic pipes, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a device for testing the bending resistance of plastic pipes, comprising a workbench, a moving mechanism inside the workbench, clamping mechanisms symmetrically arranged on the top of the moving mechanism, a plastic pipe between the two clamping mechanisms, a cylinder on the top of the workbench, a pressure detector fixedly mounted on one end of the cylinder, a pressure block fixedly mounted on the bottom of the pressure detector, the end of the pressure block near the plastic pipe being arc-shaped, and an anti-slip block fixedly mounted on the plastic pipe, and a display fixedly mounted on one end of the workbench;

[0008] The two clamping mechanisms can be moved closer or further apart by activating the moving mechanism to accommodate plastic tubes of different lengths. The inner diameter of the two clamping mechanisms can be adjusted by the operator to clamp and limit plastic tubes of different diameters.

[0009] Furthermore, the workbench is equipped with drawers inside, and support legs are fixedly installed at the four corners of the bottom of the workbench.

[0010] Furthermore, the moving mechanism includes a drive motor, which is fixedly installed inside the worktable. An output shaft is fixedly installed at the output end of the drive motor, and a first synchronous pulley is fixedly installed at the other end of the output shaft. The first synchronous pulley is rotatably installed on the worktable.

[0011] Furthermore, a timing belt is rotatably mounted on the circumferential surface of the first timing pulley, and a second timing pulley is rotatably mounted on the other end of the timing belt. The second timing pulley is rotatably mounted on the worktable.

[0012] Furthermore, the clamping mechanism includes a disc, and the discs on the two clamping mechanisms are respectively fixedly installed on the top and bottom of the timing belt so as to move through the timing belt, so that the two discs move away from or closer to each other. A hexagonal drive block is rotatably installed inside the disc, and a connecting plate is fixedly installed at one end of the hexagonal drive block.

[0013] Furthermore, multiple square blocks are fixedly installed inside the connecting plate, and multiple fixing rods are fixedly installed at one end of the disc near the connecting plate, with clamping plates rotatably installed on each of the fixing rods.

[0014] Furthermore, the clamping piece is located inside the square block, and multiple clamping pieces are located on the outer wall of the plastic tube, so that plastic tubes of different sizes can be clamped by adjusting the distance of the multiple clamping pieces relative to the plastic tube.

[0015] This utility model has the following beneficial effects:

[0016] 1. According to the length of the plastic tube to be tested, the present invention activates the moving mechanism. When the moving mechanism is in operation, it can drive the two clamping mechanisms symmetrically arranged on its top to move closer or further apart, thereby adjusting the distance between the two clamping mechanisms to adapt to plastic tubes of different lengths and ensure that the plastic tube can be stably placed between the two clamping mechanisms.

[0017] 2. According to the diameter of the plastic tube, the staff of this utility model uses a hex wrench to adjust the inner diameter of the two clamping mechanisms respectively, so that they can firmly clamp and limit the plastic tube, effectively preventing the plastic tube from axial displacement or rotation during the testing process.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the support leg of this utility model;

[0022] Figure 3 This is a schematic diagram of the plastic tube of this utility model;

[0023] Figure 4 This is a schematic diagram of the second synchronous pulley of this utility model;

[0024] Figure 5 This is a schematic diagram of the disc of this utility model;

[0025] Figure 6 This is a schematic diagram of the hexagonal drive block of this utility model;

[0026] Figure 7 This is a schematic diagram of the cylinder of this utility model.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Workbench; 101. Drawer; 102. Support leg; 2. Moving mechanism; 201. Drive motor; 202. Output shaft; 203. First synchronous pulley; 204. Synchronous belt; 205. Second synchronous pulley; 3. Clamping mechanism; 301. Disc; 302. Hexagonal drive block; 303. Connecting disc; 304. Square block; 305. Clamping piece; 306. Fixing rod; 4. Cylinder; 5. Pressure detector; 6. Plastic tube; 7. Pressure block; 8. Anti-slip block; 9. Display. Detailed Implementation

[0029] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0030] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0031] Please see Figures 1-7 As shown, this utility model is a device for testing the bending resistance of plastic pipes, including a workbench 1. The workbench 1 is equipped with a moving mechanism 2 inside. The top of the moving mechanism 2 is symmetrically equipped with clamping mechanisms 3. A plastic pipe 6 is provided between the two clamping mechanisms 3. The top of the workbench 1 is equipped with a cylinder 4. A pressure detector 5 is fixedly installed at one end of the cylinder 4. A pressure block 7 is fixedly installed at the bottom of the pressure detector 5. The end of the pressure block 7 near the plastic pipe 6 is arc-shaped. An anti-slip block 8 is fixedly installed on the plastic pipe 6. A display 9 is fixedly installed at one end of the workbench 1.

[0032] The two clamping mechanisms 3 are moved closer or further apart by activating the moving mechanism 2 to accommodate plastic tubes 6 of different lengths. The inner diameter of the two clamping mechanisms 3 is adjusted by the operator to clamp and limit plastic tubes 6 of different diameters.

[0033] When testing the bending resistance of plastic pipes, the moving mechanism 2 is activated first, based on the length of the plastic pipe 6 to be tested. When the moving mechanism 2 operates, it can move the two clamping mechanisms 3 symmetrically arranged at its top closer or further apart, thereby adjusting the distance between the two clamping mechanisms 3 to accommodate plastic pipes 6 of different lengths and ensuring that the plastic pipe 6 can be stably placed between the two clamping mechanisms 3. Subsequently, the staff uses a hex wrench to adjust the inner diameter of the two clamping mechanisms 3 according to the diameter of the plastic pipe 6, so that they can firmly clamp and limit the plastic pipe 6, effectively preventing the plastic pipe 6 from axial displacement or rotation during the test. After the preparation work is completed, the cylinder 4 is activated, and the cylinder 4 pushes the pressure detector 5 fixed at one end to move downward. The pressure detector 5 moves the pressure block 7, which is arc-shaped at the bottom, closer and closer to the plastic pipe 6. Due to the arc-shaped design of the pressure block 7 and the anti-slip block 8 fixedly installed on the plastic tube 6, when the pressure block 7 applies pressure to the plastic tube 6, it can ensure the uniform transmission of force and further prevent the plastic tube 6 from shifting laterally during the force application process. During the process of the pressure block 7 continuously applying pressure to the plastic tube 6 and causing it to bend and deform, the pressure detector 5 monitors the applied pressure in real time and transmits the pressure data to the display 9 fixedly installed at one end of the workbench 1 for display. By comprehensively analyzing the pressure data and the degree of bending deformation of the plastic tube 6, the bending resistance of the plastic tube 6 can be accurately evaluated.

[0034] In one embodiment, the workbench 1 is provided with a drawer 101 inside, and support legs 102 are fixedly installed at the four corners of the bottom of the workbench 1.

[0035] Drawer 101 is located inside workbench 1. Its main function is to provide convenient storage space. Support legs 102 fixedly installed at the four corners of the bottom of workbench 1 play a role in stably supporting the entire testing device.

[0036] In one embodiment, the moving mechanism 2 includes a drive motor 201, which is fixedly installed inside the worktable 1. An output shaft 202 is fixedly installed at the output end of the drive motor 201, and a first synchronous wheel 203 is fixedly installed at the other end of the output shaft 202. The first synchronous wheel 203 is rotatably installed on the worktable 1.

[0037] A timing belt 204 is rotatably mounted on the circumferential surface of the first timing pulley 203, and a second timing pulley 205 is rotatably mounted on the other end of the timing belt 204. The second timing pulley 205 is rotatably mounted on the worktable 1.

[0038] When the testing device needs to adjust the position of the clamping mechanism according to the length of the plastic tube, the drive motor 201 starts, and the output shaft 202 of the drive motor 201 begins to rotate under the drive of the drive motor 201. The first synchronous pulley 203, which is fixedly connected to it, also rotates around its axis. Since the synchronous belt 204 is wrapped around the circumference of the first synchronous pulley 203, the rotation of the first synchronous pulley 203 drives the synchronous belt 204 to start moving through friction. The other end of the synchronous belt 204 is rotatably connected to the second synchronous pulley 205. Under the drive of the synchronous belt 204, the second synchronous pulley 205 also starts to rotate. When the synchronous belt 204 moves under the synergistic action of the first synchronous pulley 203 and the second synchronous pulley 205, it will drive the clamping mechanism 3 to move linearly along the worktable 1. By using the synchronous belt 204 for transmission, the position movement of the clamping mechanism 3 can be controlled, effectively realizing the adaptation to plastic tubes 6 of different lengths, and ensuring the accuracy and reliability of the installation of plastic tubes 6 during the testing process.

[0039] In one embodiment, the clamping mechanism 3 includes a disc 301. The discs 301 on the two clamping mechanisms 3 are respectively fixedly installed on the top and bottom of the synchronous belt 204 so as to move through the synchronous belt 204, so that the two discs 301 move away from or closer to each other. A hexagonal drive block 302 is rotatably installed inside the disc 301, and a connecting disc 303 is fixedly installed at one end of the hexagonal drive block 302.

[0040] Multiple square blocks 304 are fixedly installed inside the connecting disk 303. Multiple fixing rods 306 are fixedly installed at one end of the disc 301 near the connecting disk 303. Clamping pieces 305 are rotatably installed on each of the multiple fixing rods 306.

[0041] The clamping piece 305 is located inside the square block 304, and multiple clamping pieces 305 are located on the outer wall of the plastic tube 6, so that different sizes of plastic tubes 6 can be clamped by adjusting the distance of the multiple clamping pieces 305 relative to the plastic tube 6.

[0042] When the timing belt 204 moves, the two discs 301 fixed at its top and bottom move closer or further apart. To clamp plastic tubes 6 of different diameters, the operator uses a hexagonal wrench to rotate the hexagonal drive block 302. When the hexagonal drive block 302 rotates, the connecting disc 303 fixedly connected to it rotates synchronously. Multiple square blocks 304 inside the connecting disc 303 rotate together with the connecting disc 303. Since the clamping piece 305 is located inside the square block 304 and can rotate around the fixed rod 306, the rotation of the square block 304 will cause the clamping piece 305 to rotate around the fixed rod 306. If a smaller diameter plastic tube 6 needs to be clamped, the hexagonal drive block 302 is rotated, causing the square block 304 to rotate the clamping piece 305 inwards. Multiple clamping pieces 305 move closer together, reducing the inner diameter they form until they are tightly fitted against the outer wall of the plastic tube 6, thus achieving stable clamping of the smaller diameter plastic tube 6. Conversely, to clamp a larger diameter plastic tube 6, the hexagonal drive block 302 is rotated in the opposite direction. The square block 304 drives the clamping plates 305 to rotate outward, causing the multiple clamping plates 305 to move away from each other and increase the inner diameter to accommodate the larger diameter plastic tube 6. In this way, the distance between the clamping plates 305 and the plastic tube 6 can be flexibly adjusted to accommodate plastic tubes 6 of different sizes. This ensures that during the bending performance test, the plastic tube 6 is firmly fixed between the multiple clamping plates 305, preventing axial displacement or rotation during the stress process and ensuring the accuracy and reliability of the test data.

[0043] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A device for testing the bending resistance of plastic pipes, comprising a workbench (1), characterized in that: The workbench (1) is equipped with a moving mechanism (2) inside. The top of the moving mechanism (2) is symmetrically equipped with clamping mechanisms (3). A plastic tube (6) is provided between the two clamping mechanisms (3). The top of the workbench (1) is equipped with a cylinder (4). A pressure detector (5) is fixedly installed at one end of the cylinder (4). A pressure block (7) is fixedly installed at the bottom of the pressure detector (5). The end of the pressure block (7) near the plastic tube (6) is arc-shaped. An anti-slip block (8) is fixedly installed on the plastic tube (6). A display (9) is fixedly installed at one end of the workbench (1). The two clamping mechanisms (3) are moved closer or further apart by activating the moving mechanism (2) to accommodate plastic tubes (6) of different lengths. The inner diameters of the two clamping mechanisms (3) are adjusted by the staff to clamp and limit plastic tubes (6) of different diameters.

2. The device for testing the bending resistance of plastic pipes according to claim 1, characterized in that, The workbench (1) is equipped with drawers (101) inside, and support legs (102) are fixedly installed at the four corners of the bottom of the workbench (1).

3. The device for testing the bending resistance of plastic pipes according to claim 1, characterized in that, The moving mechanism (2) includes a drive motor (201), which is fixedly installed inside the worktable (1). An output shaft (202) is fixedly installed at the output end of the drive motor (201), and a first synchronous wheel (203) is fixedly installed at the other end of the output shaft (202). The first synchronous wheel (203) is rotatably installed on the worktable (1).

4. The device for testing the bending resistance of plastic pipes according to claim 3, characterized in that, A timing belt (204) is rotatably mounted on the circumferential surface of the first timing pulley (203), and a second timing pulley (205) is rotatably mounted on the other end of the timing belt (204). The second timing pulley (205) is rotatably mounted on the worktable (1).

5. The device for testing the bending resistance of plastic pipes according to claim 4, characterized in that, The clamping mechanism (3) includes a disc (301). The discs (301) on the two clamping mechanisms (3) are respectively fixedly installed on the top and bottom of the synchronous belt (204) so ​​that they can move through the synchronous belt (204) and move away from or closer to each other. A hexagonal drive block (302) is rotatably installed inside the disc (301), and a connecting disc (303) is fixedly installed at one end of the hexagonal drive block (302).

6. The device for testing the bending resistance of plastic pipes according to claim 5, characterized in that, Multiple square blocks (304) are fixedly installed inside the connecting disk (303), and multiple fixing rods (306) are fixedly installed on one end of the disc (301) near the connecting disk (303). Clamping pieces (305) are rotatably installed on each of the multiple fixing rods (306).

7. The device for testing the bending resistance of plastic pipes according to claim 6, characterized in that, The clamping piece (305) is located inside the square block (304), and multiple clamping pieces (305) are located on the outer wall of the plastic tube (6) so as to clamp plastic tubes (6) of different sizes by adjusting the distance of multiple clamping pieces (305) relative to the plastic tube (6).

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