A pipe compressive strength detection device

Abstract

The application relates to the technical field of new material strength detection, and provides a pipe compressive strength detection equipment, which comprises a workbench and a pipe; a supporting sleeve is mounted on one side of the top end of the workbench; and an auxiliary structure is arranged at the top end of the workbench. The detection range is expanded in the spatial dimension through the translation + rotation mode; the translation action can move the detection point along the length direction of the pipe; the compressive performance of different axial regions such as the two ends, the middle part and the vicinity of the interface of the pipe can be detected; the weak points in the axial direction such as the wall thickness deviation of the two ends of the pipe due to the machining process can be avoided; the rotation action can rotate the detection point around the circumferential direction of the pipe; the compressive capacity of different angles on the circumference of the pipe can be detected; the defects in the circumferential direction such as the insufficient compressive capacity of the local circumferential region caused by the uneven dispersion of graphene can be avoided; and therefore the data accuracy during the pipe compressive strength detection is improved.

Description

Technical Field

[0001] This invention relates to the field of new material strength testing technology, and in particular to a device for testing the compressive strength of pipes. Background Technology

[0002] Graphene pipes are a new type of pipe material composed of graphene and polymer materials. Due to their excellent performance, they have been widely used in many fields. They are usually made of plastic as the matrix material, and graphene is uniformly dispersed and added to the plastic matrix through a special process to form a composite material, thereby giving the pipes new performance advantages. After the graphene pipes are produced, their compressive strength needs to be tested to ensure their quality. This requires the use of pipe compressive strength testing equipment. However, traditional pipe compressive strength testing equipment still has some problems when performing the test. Traditional pipe compressive strength testing equipment typically performs a single compressive strength test on the same location of graphene pipes. However, since different locations on the pipe may have different performance limitations, testing only the same fixed location may result in performance differences at different locations due to uneven graphene dispersion, wall thickness deviations, and other issues, affecting the accuracy of the compressive strength test data. Therefore, a new pipe compressive strength testing device is needed to solve these problems. Summary of the Invention

[0003] The purpose of this invention is to provide a pipe compressive strength testing device to solve the problem that existing pipe compressive strength testing devices usually perform compressive strength testing on the same location of the graphene pipe. If only the same fixed location is tested, performance differences may occur at different locations due to uneven graphene dispersion, wall thickness deviation, and other issues, which will affect the accuracy of the compressive strength test data.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a pipe compressive strength testing device, comprising a workbench and a pipe; A support sleeve is installed on one side of the top of the workbench, and an auxiliary structure is provided on the top of the workbench. The auxiliary structure includes a support frame mounted on one side of the top of the worktable. An electro-hydraulic servo cylinder is mounted on the top of the support frame, and a pressure detection component is mounted on the bottom of the electro-hydraulic servo cylinder. Connecting plates are mounted on both sides of the pressure detection component, and a guide rod is mounted on the top of the connecting plate. A first toothed plate is mounted on one side of the support frame, and a ratchet is mounted on one side of the top of the support frame. A connecting disc is mounted on one side of the ratchet. A lead screw is mounted inside the worktable, and a lead sleeve is mounted on the outside of the lead screw.

[0005] Preferably, a push block is installed at the top of the threaded sleeve, a three-jaw chuck is movably installed on one side of the push block, a pipe is fixedly installed on one side of the three-jaw chuck, a first bevel gear is installed on the outer side of one end of the three-jaw chuck, a second bevel gear is installed on one side of the first bevel gear, a connecting shaft is installed at one end of the second bevel gear, a rotating gear is fixed at one end of the connecting shaft, and a second toothed plate is installed on one side of the top of the worktable.

[0006] Preferably, the top end of the guide rod penetrates the interior of the top end of the support frame, the guide rod and the support frame form a guide connection, and the connecting disc is connected to the rotating disc via a belt.

[0007] Preferably, the lead screw has an external thread on its outer side and the threaded sleeve has an internal thread on its inner side, forming a threaded connection between the lead screw and the threaded sleeve.

[0008] Preferably, the outer side of the rotating gear is provided with multiple sets of teeth, and the multiple sets of teeth mesh with the second tooth plate.

[0009] Preferably, clamping structures are provided on both sides of the top of the workbench. The clamping structures include fixed seats, which are installed on both sides of the top of the workbench. Extrusion blocks are installed on both sides of the pressure detection component. A moving groove is opened inside the fixed seat. A fixed block is installed inside one end of the fixed seat. A clamping plate is installed at one end of the fixed block. Connecting pieces are fixed on both sides of the fixed block. A spring is installed on one side of the connecting piece.

[0010] Preferably, one end of the spring is fixed to one side inside the movable groove, and the spring and the movable groove form a telescopic structure.

[0011] Preferably, the springs are provided in two sets, and the two sets of springs are symmetrically distributed on both sides of the fixing block.

[0012] Preferably, one end of the extrusion block is inserted into the interior of the moving groove, and the extrusion block and the moving groove form an insertion structure.

[0013] Preferably, the clamping plates are provided in two sets, and the two sets of clamping plates are symmetrically distributed on both sides of the top of the workbench.

[0014] The present invention provides a pipe compressive strength testing device, the advantages of which are: With the aid structure, when testing the compressive strength of the pipe, the electro-hydraulic servo cylinder is activated to push the pressure testing component downward to fit against the surface of the pipe for a compressive strength test. When the electro-hydraulic servo cylinder pushes downward, it drives the first toothed plate downward through the connecting plate. Through the cooperation between the first toothed plate and the ratchet, the first toothed plate can drive the outer tooth ring of the ratchet to rotate freely when it moves downward. When the pressure testing component returns to its original position after the compressive strength test is completed, the first toothed plate will move upward. At this time, the first toothed plate will drive the ratchet to rotate through the cooperation between the first toothed plate and the outer tooth ring of the ratchet. During the rotation of the ratchet, it will drive the lead screw to rotate through the cooperation between the connecting plate and the rotating plate. During the rotation of the lead screw, it will drive the pipe on one side of the push block at the top of the lead screw to move to one side through the cooperation with the lead sleeve. This allows different positions of the pipe to be moved to the bottom of the pressure testing component, realizing the strength test of different positions of the pipe. Furthermore, as the pusher moves to one side, it drives the rotating gear to move. Through the meshing of the rotating gear with the second toothed plate, the second bevel gear at one end of the rotating gear rotates. The second bevel gear, in turn, engages with the first bevel gear, causing the pipe on one side of the three-jaw chuck to rotate. This allows for automatic rotation and translation of the pipe during compressive strength testing, enabling compressive strength testing at different locations and on different surfaces of the pipe. The combination of translation and rotation provides comprehensive performance coverage without blind spots, compared to traditional fixed-point testing which can only assess the compressive strength of a specific location on the pipe. The translation and rotation method expands the detection range in space. The translation action allows the detection point to move along the length of the pipe, which can detect the compressive strength of different axial areas such as the two ends, the middle, and the vicinity of the interface of the pipe, avoiding the omission of axial weak points, such as the wall thickness deviation that may exist at the two ends of the pipe due to the processing technology. The rotation action allows the detection point to rotate around the circumference of the pipe, which can detect the compressive strength at different angles on the circumference of the pipe, avoiding the omission of circumferential defects, such as insufficient compressive strength in local circumferential areas caused by uneven graphene dispersion, thereby improving the accuracy of data when testing the compressive strength of the pipe. By incorporating a clamping structure, before the pressure testing component performs compressive strength testing on the pipe, the fixed block and the squeezing block work together to squeeze the fixed block to one side, thereby pushing the clamping plate on one side of the fixed block to fit against the outside of the pipe. Through the use of two sets of clamping plates, the pipe can be clamped on both sides at the testing point, making it less likely for the pipe to shift position when the pressure testing component performs compressive strength testing, thus making the testing more accurate. Furthermore, when the fixed block moves to one side, it pushes the spring to contract to one side. When the inspection is completed and the pressing block is disengaged from the moving groove, the fixed block returns to its original position under the action of the spring, so that it will not affect the rotation and movement of the pipe when it is not being inspected, thus completing the clamping work during pipe inspection. Attached Figure Description

[0015] Figure 1 This is a frontal three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below; Figure 3 This is a frontal cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 4 This is a side view cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 5 This is a three-dimensional structural schematic diagram of the clamping structure of the present invention, viewed from the front cross-section. Figure 6 This is a three-dimensional structural diagram of the clamping structure of the present invention, viewed from below. Figure 7 This is a three-dimensional structural diagram of the pusher block of the present invention, viewed from the front and in cross-section. Figure 8 This is a three-dimensional structural diagram of the pusher block of the present invention, viewed from below. Figure 9 This is a partial three-dimensional structural diagram of the auxiliary structure of the present invention; Figure 10 This is a top view of a partial three-dimensional structure of the auxiliary structure of the present invention; Figure 11 This is a partial three-dimensional structural diagram of the auxiliary structure of the present invention, viewed from below.

[0016] The following are the annotations in the figure: 1. Workbench; 2. Pipe; 3. Support sleeve; 4. Auxiliary structure; 401. Rotary disk; 402. Connecting disk; 403. Ratchet; 404. First toothed plate; 405. Electro-hydraulic servo cylinder; 406. Guide rod; 407. Support frame; 408. Push block; 409. Three-jaw chuck; 4010. Connecting shaft; 4011. Rotary gear; 4012. Second toothed plate; 4013. First bevel gear; 4014. Second bevel gear; 4015. Lead screw; 4016. Lead sleeve; 4017. Connecting plate; 4018. Pressure detection assembly; 5. Clamping structure; 501. Fixed seat; 502. Moving groove; 503. Clamping plate; 504. Spring; 505. Connecting piece; 506. Fixed block; 507. Extrusion block. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-11 The present invention provides a pipe compressive strength testing device, including a workbench 1 and a pipe 2; a support sleeve 3 is installed on one side of the top of the workbench 1, and an auxiliary structure 4 is provided on the top of the workbench 1; The auxiliary structure 4 includes a support frame 407, which is installed on one side of the top of the worktable 1. An electro-hydraulic servo cylinder 405 is installed at the top of the support frame 407, and a pressure detection component 4018 is installed at the bottom of the electro-hydraulic servo cylinder 405. Connecting plates 4017 are installed on both sides of the pressure detection component 4018, and a guide rod 406 is installed at the top of the connecting plate 4017. A first toothed plate 404 is installed on one side of the support frame 407, and a ratchet 403 is installed on one side of the top of the support frame 407. A connecting plate 402 is installed on one side of the ratchet 403. A lead screw 4015 is installed inside the worktable 1, and a lead sleeve 4016 is installed on the outside of the lead screw 4015. A push block 408 is installed at the top of the threaded sleeve 4016. A three-jaw chuck 409 is movably installed on one side of the push block 408. A pipe 2 is fixedly installed on one side of the three-jaw chuck 409. A first bevel gear 4013 is installed on the outer side of one end of the three-jaw chuck 409. A second bevel gear 4014 is installed on one side of the first bevel gear 4013. A connecting shaft 4010 is installed at one end of the second bevel gear 4014. A rotary gear 4011 is fixed at one end of the connecting shaft 4010. A push block 408 is installed on one side of the top of the worktable 1. The device is equipped with a second toothed plate 4012; the top end of the guide rod 406 passes through the interior of the top end of the support frame 407, and the guide rod 406 and the support frame 407 form a guide connection; the connecting plate 402 is connected to the rotating plate 401 via a belt; the outer side of the lead screw 4015 is provided with an external thread, and the inner side of the thread sleeve 4016 is provided with an internal thread, and the lead screw 4015 and the thread sleeve 4016 form a threaded connection; the outer side of the rotating gear 4011 is provided with multiple sets of teeth, and the multiple sets of teeth mesh with the second toothed plate 4012.

[0019] Reference Figures 1-4 and Figures 7-11As shown: When testing the compressive strength of pipe 2, the operator inserts one end of pipe 2 through the inside of the support sleeve 3, and then attaches the other end to one side of the three-jaw chuck 409. After attachment, the three-jaw chuck 409 fixes one end of pipe 2. After fixing, the electro-hydraulic servo cylinder 405 is activated. After activation, the electro-hydraulic servo cylinder 405 pushes the pressure detection component 4018 downward to attach to the surface of pipe 2 for compressive strength testing. When the electro-hydraulic servo cylinder 405 pushes downward, the connecting plate 4017 drives the first toothed plate 404 downward. When the first toothed plate 404 moves downward, it drives the outer toothed ring of the ratchet 403 to rotate freely. When the pressure detection component 4018 completes the compressive strength test of the surface of pipe 2... When the device returns to its original position, the first toothed plate 404 moves upward. During this movement, the first toothed plate 404 engages with the outer toothed ring of the ratchet 403, causing the ratchet 403 to rotate. This allows the ratchet 403 to idle when the first toothed plate 404 moves downward and rotate when it moves upward. During this rotation, the ratchet 403 drives the rotating disk 401 to rotate via the connecting disk 402. The rotating disk 401 then drives the lead screw 4015 to rotate. During this rotation, the lead screw 4015 engages with the threaded sleeve 4016, causing the push block 408 at the top of the threaded sleeve 4016 to move to one side. This movement pushes the pipe 2 to one side, thus moving the pipe 2 to different positions on the pressure detection assembly. At the bottom of 4018, the compressive strength of pipe 2 at different locations is tested. When push block 408 moves to one side, it drives rotating gear 4011 to move. During the movement, rotating gear 4011 meshes with second toothed plate 4012, causing rotating gear 4011 to rotate. During the rotation, rotating gear 4011 drives second bevel gear 4014 to rotate via connecting shaft 4010. During the rotation, second bevel gear 4014, through its interaction with first bevel gear 4013, drives three-jaw chuck 409 to rotate. During the rotation, three-jaw chuck 409 drives pipe 2 to rotate. This achieves automatic pushing of pipe 2 to one side for rotation and translation during compressive strength testing, thus achieving the goal of not... The compressive strength testing of different surfaces at the same location allows for comprehensive performance coverage without blind spots. Compared to traditional fixed-point testing, which can only assess the compressive strength of a specific location on the pipe, the translation and rotation method expands the testing range in space. Translation allows the testing point to move along the length of the pipe, enabling the detection of compressive strength in different axial areas such as the ends, middle, and near the joints, avoiding the omission of weak points in the axial direction, such as wall thickness deviations that may exist at the ends of the pipe due to processing technology. Rotation allows the testing point to rotate around the circumference of the pipe, enabling the detection of compressive strength at different angles on the circumference, avoiding the omission of defects in the circumferential direction, such as insufficient compressive strength in local circumferential areas caused by uneven graphene dispersion. The compressive strength of graphene pipes needs to be judged based on the overall average strength, rather than local single-point data. The limitations of traditional single-point testing are amplified here. If only translational testing is used, the data only represents the performance along one axial line. If this line happens to be a high-strength area enriched in graphene, the test result will be inflated; if it corresponds to a low-strength area, the result will be inflated. Neither can reflect the true performance. However, the translational + rotational testing method can collect three-dimensional data of axial position, circumferential angle, and compressive strength, making the data more accurate and comprehensive when testing the compressive strength of pipe 2. It can reduce misjudgment of individual pipes 2. Even among pipes 2 in the same batch, the weak points of different individuals may be different. The translational + rotational testing method can capture the true weak area of ​​each pipe 2, avoiding the misjudgment caused by accidentally avoiding or hitting the weak point of a certain pipe 2 when using traditional fixed-point testing. Moreover, it is more in line with actual use scenarios. In actual applications, the pressure on pipe 2 is applied to the entire pipe body, not a single fixed position. The translation and rotation testing method is closer to the actual stress situation and can more accurately assess the compressive reliability of pipe 2 in actual use, thereby completing the compressive strength test of pipe 2.

[0020] Clamping structures 5 are provided on both sides of the top of the workbench 1. The clamping structure 5 includes a fixed seat 501. The fixed seat 501 is installed on both sides of the top of the workbench 1. The pressure detection component 4018 is installed on both sides of the pressing block 507. The fixed seat 501 has a moving groove 502 inside. A fixed block 506 is installed inside one end of the fixed seat 501. A clamping plate 503 is installed at one end of the fixed block 506. Connecting pieces 505 are fixed on both sides of the fixed block 506. A spring 504 is installed on one side of the connecting piece 505. One end of the spring 504 is fixed to one side inside the moving groove 502, and the spring 504 and the moving groove 502 form a telescopic structure. Two sets of springs 504 are provided, and the two sets of springs 504 are symmetrically distributed on both sides of the fixing block 506. One end of the extrusion block 507 is inserted into the interior of the moving groove 502, and the extrusion block 507 and the moving groove 502 form an insertion structure. Two sets of clamping plates 503 are provided, and the two sets of clamping plates 503 are symmetrically distributed on both sides of the top of the worktable 1. Reference Figure 5 and Figure 6As shown: Before the pressure testing component 4018 performs pressure strength testing on the pipe 2, the extrusion blocks 507 at both ends of the pressure testing component 4018 are inserted into the moving groove 502. Since the top end of the fixed block 506 and the bottom end of the extrusion block 507 are set with matching angles, the extrusion block 507 will squeeze the fixed block 506 to one side as it moves downward inside the moving groove 502, thereby pushing the clamping plate 503 on one side of the fixed block 506 to fit against the outside of the pipe 2. Through the use of the two sets of clamping plates 503, This allows for clamping of the pipe 2, preventing positional shift of the pipe 2 during the strength test by the pressure testing component 4018, thus improving the accuracy of the test. When the fixing block 506 moves to one side, it pushes the spring 504 to retract to one side. When the test is completed and the pressing block 507 disengages from the moving groove 502, the fixing block 506 returns to its original position under the action of the spring 504, ensuring that it does not affect the rotation and movement of the pipe 2 when not being tested, thereby completing the clamping work during the test of the pipe 2.

[0021] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pipe compressive strength testing device, characterized in that: Includes a workbench (1) and pipes (2); A support sleeve (3) is installed on one side of the top of the workbench (1), and an auxiliary structure (4) is provided on the top of the workbench (1). The auxiliary structure (4) includes a support frame (407), which is installed on one side of the top of the workbench (1). An electro-hydraulic servo cylinder (405) is installed on the top of the support frame (407), and a pressure detection component (4018) is installed at the bottom of the electro-hydraulic servo cylinder (405). Connecting plates (4017) are installed on both sides of the pressure detection component (4018). A guide rod (406) is installed on the top of the connecting plate (4017). A first toothed plate (404) is installed on one side of the support frame (407). A ratchet gear (403) is installed on one side of the top of the support frame (407). A connecting plate (402) is installed on one side of the ratchet gear (403). A lead screw (4015) is installed inside the workbench (1), and a connecting plate (402) is installed on the outside of the lead screw (4015). A threaded sleeve (4016) is provided with a push block (408) at its top end. A three-jaw chuck (409) is movably installed on one side of the push block (408). A pipe (2) is fixed on one side of the three-jaw chuck (409). A first bevel gear (4013) is installed on the outer side of one end of the three-jaw chuck (409). A second bevel gear (4014) is installed on one side of the first bevel gear (4013). A connecting shaft (4010) is installed on one end of the second bevel gear (4014). A rotating gear (4011) is fixed on one end of the connecting shaft (4010). A second toothed plate (4012) is installed on one side of the top end of the worktable (1). Multiple sets of teeth are provided on the outer side of the rotating gear (4011). The multiple sets of teeth mesh with the second toothed plate (4012).

2. The pipe compressive strength testing equipment according to claim 1, characterized in that: The top end of the guide rod (406) penetrates the interior of the top end of the support frame (407), and the guide rod (406) and the support frame (407) form a guide connection. The connecting plate (402) is connected to the rotating plate (401) via a belt.

3. The pipe compressive strength testing equipment according to claim 1, characterized in that: The lead screw (4015) has an external thread on its outer side, and the thread sleeve (4016) has an internal thread on its inner side, forming a threaded connection between the lead screw (4015) and the thread sleeve (4016).

4. The pipe compressive strength testing equipment according to claim 1, characterized in that: The workbench (1) has clamping structures (5) on both sides of its top end. The clamping structures (5) include a fixed seat (501). The fixed seat (501) is installed on both sides of the top end of the workbench (1). The pressure detection component (4018) has extrusion blocks (507) installed on both sides. The fixed seat (501) has a moving groove (502) inside. The fixed seat (501) has a fixed block (506) installed inside one end. The fixed block (506) has a clamping plate (503) installed at one end. The fixed block (506) has connecting pieces (505) fixed on both sides. The connecting piece (505) has a spring (504) installed on one side.

5. The pipe compressive strength testing device according to claim 4, characterized in that: One end of the spring (504) is fixed to one side inside the moving groove (502), and the spring (504) and the moving groove (502) form a telescopic structure.

6. The pipe compressive strength testing device according to claim 4, characterized in that: The spring (504) is provided in two sets, and the two sets of springs (504) are symmetrically distributed on both sides of the fixing block (506).

7. The pipe compressive strength testing device according to claim 4, characterized in that: One end of the extrusion block (507) is inserted into the interior of the moving groove (502), and the extrusion block (507) and the moving groove (502) form an insertion structure.

8. The pipe compressive strength testing device according to claim 4, characterized in that: The clamping plates (503) are provided in two sets, and the two sets of clamping plates (503) are symmetrically distributed on both sides of the top of the workbench (1).

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