A pipe strength performance testing device

Abstract

The present application discloses a pipe strength performance testing device, which belongs to the field of pipe testing technology. It mainly includes a base, on which at least two groups of first support legs are fixedly installed, and an upper support seat is fixedly installed on the first support leg; a lower detection component, which is arranged on the base, and the lower detection component includes a clamping table placed on the base, and two groups of motors are fixedly installed on one side of the clamping table, and a clamping rod is fixedly installed on the output end of the motor, and the other end of the clamping rod is movably connected to the clamping table through a bearing. A pipe strength performance testing device of the present application is provided with an upper support seat, a second weight, a limit block, a limit groove and a hinge. When testing the pipe pressure resistance, the position of the second weight can be limited by limiting the hinge by the limit groove, thereby adjusting the pressure of the weight on the pipe to simulate the scene where the laid pipe is subjected to stronger pressure when in use.

Description

Technical Field

[0001] The present application relates to the technical field of pipe testing, and in particular to a pipe strength performance testing device. Background Art

[0002] Pipes are materials used to make pipe fittings. Different pipe fittings require different pipes, and the quality of pipes directly determines the quality of pipe fittings. Pipes are used in a wide range of scenarios and are usually used in the construction industry, municipal field, water conservancy field, petrochemical industry, etc. In order to ensure the strength and safety of pipes, usually after the batch production of pipes is completed, some pipes will be extracted for pipe strength performance testing. The test is divided into multiple testing procedures, including tensile testing, bending testing, impact performance testing, etc. Among the many testing procedures, the compressive performance test of pipes is an indispensable testing step, which is mainly used to evaluate the structural integrity and stability of the pipes when they are under pressure. After the installation of the pipes is completed, the pipes buried underground will be subjected to pressure from the soil all year round, and the compressive strength performance test of the pipes is required.

[0003] For example, the patent with authorization announcement number CN114459883B discloses a device for testing the compressive properties of metal pipes, including a testing box, a mounting rod, a mounting plate, a mounting tube, a slider, a first fixed plate, a second fixed plate and an electric telescopic rod. In actual use, according to the length of the pipe, the electric telescopic rod is started to drive the mounting plate to rotate, and then the position between the mounting plates is adjusted to adapt to the installation of pipes of different lengths.

[0004] Although the above-mentioned pipe strength performance testing device realizes the installation of pipes of different lengths by adjusting the spacing of the clamps, since pipes are widely used in the construction industry and have a wide laying range, after the pipe laying is completed and does not affect the normal construction of the construction site, the pipes are usually laid under the ground and covered by soil. In this way, the pipes will be subjected to the downward pressure from the soil all year round, and there may be vehicles, construction items and other materials with a certain weight placed on the ground at the construction site from time to time, so that the pipes will be subjected to stronger pressure within a certain period of time. However, in the process of pipe compressive strength testing, the pressure on the pipe is not adjusted for a certain period of time, which will affect the integrity and stability of the pipe in the later use. Therefore, it is necessary to provide a pipe strength performance testing device to solve the above problems.

[0005] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0006] Based on the above problems existing in the prior art, the problem to be solved by the present application is: to provide a pipe strength performance testing device, which solves the problem that the pipe strength performance testing device cannot adjust the pressure on the pipe.

[0007] The technical solution adopted by the present application to solve its technical problem is: a pipe strength performance testing device, including a base, on which at least two groups of first support legs are fixedly installed, and an upper support base is fixedly installed on the first support leg; a lower detection component, which is arranged on the base, and the lower detection component includes a clamping table placed on the base, one side of the clamping table is fixedly installed with two groups of motors, and a clamping rod is fixedly installed on the output end of the motor, and the other end of the clamping rod is movably connected to the clamping table through a bearing; a clamp, which is fixedly installed on both sides of the clamping rod, and a clamp is provided on the clamp. There is a semicircular groove; a first cylinder, which is installed on the base, and the output end of the first cylinder is fixedly connected to the bottom of the clamping table; a support rod, which is fixedly installed on the base, and the top of the support rod passes through the upper support seat; a cross bar, which is hingedly installed on the top of the support rod, and the end of the cross bar away from the support rod is hooked to hold a first weight, and a placement table is fixedly installed on the upper support seat near the first weight; a second weight, which is slidably installed on the cross bar, and an adjustment groove is opened on the upper support seat, and the second weight is located in the adjustment groove.

[0008] Furthermore, a first limiting plate is fixedly installed on the upper support seat, a second limiting plate is placed on the first limiting plate, both sides of the bottom of the second limiting plate are fixedly connected to limiting columns, the bottom of the limiting column passes through the upper support seat, a pressure plate is fixedly installed on the bottom of the limiting column, a pressure-bearing part is fixedly installed on the pressure plate, the top of the pressure-bearing part passes through the upper support seat and the first limiting plate and is fixedly connected to the second limiting plate, and a pressure detection gauge is fixedly installed on the second limiting plate.

[0009] Furthermore, a slide groove is provided on one side of the upper support seat, a limit block is slidably installed on the slide groove, a second cylinder is fixedly installed on one side of the limit block, and one side of the second cylinder is fixedly connected to the upper support seat; a limit groove is provided on the limit block, and a hinge used in conjunction with the limit groove is installed on one side of the second weight, the limit groove includes a first channel provided on the limit block, the hinge includes a hinge rod fixedly installed on the second weight, a connecting plate is movably installed on one side of the hinge rod, and a supporting member is fixedly installed on one side of the connecting plate, one end of the supporting member is supported in the first channel; a third channel is provided at the end of the first channel, the groove bottom height of the third channel is higher than the groove bottom height of the first channel and forms a blocking step, and a first stationary point is provided at the position where the first channel is connected to the third channel.

[0010] Furthermore, a second channel is provided on one side of the end of the first channel, the end of the second channel is communicated with the third channel, a transition slope is provided at the end of the second channel, the highest position of the transition slope is higher than the bottom position of the groove of the third channel and forms a transition step.

[0011] Furthermore, a boss is provided at the end of the third channel, the highest position of the boss is higher than the bottom of the groove of the third channel and forms a first blocking step, and a second stationary point is provided at the position where the third channel communicates with the end of the second channel.

[0012] Furthermore, a fourth channel is provided on the other side of the end of the first channel, and a third stagnation point is provided at the end position of the fourth channel. The position of the third stagnation point is closer to the second cylinder than the position of the second stagnation point, and the highest position of the boss is higher than the groove bottom position of the fourth channel and forms a second blocking step.

[0013] Furthermore, a PLC control system is arranged in the base, and a first lifting platform is installed at the starting end of the second channel, and the first lifting platform is connected to the PLC control system by signal.

[0014] Furthermore, a second lifting platform is provided at the starting end of the fourth channel, and the second lifting platform is connected to the PLC control system signal.

[0015] Furthermore, at least two groups of second supporting legs are fixedly installed on the base, the second supporting legs are located on both sides of the clamping platform, the upper ends of the second supporting legs are fixedly connected to the upper supporting seat, a sliding rod is fixedly installed on the second supporting leg, a sliding sleeve is slidably installed on the sliding rod, and linkage rods are fixedly installed on both sides of the clamping platform, and both sides of the linkage rod pass through the clamping platform and are fixedly connected to the sliding sleeve.

[0016] The beneficial effect of the present application is that a pipe strength performance testing device provided by the present application, by being provided with an upper support seat, a second weight, a limit block, a limit groove and a hinge, can limit the position of the second weight by limiting the hinge by the limit groove when testing the pressure resistance of the pipe, thereby adjusting the pressure of the weight on the pipe to simulate the scenario in which the laid pipe is subjected to stronger pressure when in use, thereby further ensuring the stability of the pipe.

[0017] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 This is an overall schematic diagram of a pipe strength performance testing device in this application;

[0020] Figure 2 for Figure 1 Side view of the overall structure;

[0021] Figure 3 for Figure 1 Schematic diagram of the overall structure after the local structure is cut open;

[0022] Figure 4 for Figure 3 A magnified view of the structure of the middle A area;

[0023] Figure 5 for Figure 4 A magnified view of the structure of the middle B region;

[0024] Figure 6 for Figure 1 Schematic diagram of the overall structure after removing the upper detection component;

[0025] Figure 7 for Figure 1 Schematic diagram of the overall structure after removing the lower detection component;

[0026] Figure 8 for Figure 7 Schematic diagram of the overall structure of the middle limit block and the hinge;

[0027] Fig. 9 for Figure 8 Side view of the overall structure.

[0028] Among them, the reference numerals in the figure are:

[0029] 1. Base; 2. First support leg; 3. Upper support seat; 31. Placement table; 32. Adjustment slot; 33. Slide slot; 34. Second cylinder;

[0030] 4. Lower detection assembly; 41. Clamping table; 42. Second support leg; 43. Sliding rod; 44. Sliding sleeve; 45. Linkage rod; 46. Motor; 47. Clamp; 5. First cylinder; 6. Support rod; 7. Crossbar; 71. First weight; 72. Second weight;

[0031] 8. Limit block; 9. Limit groove; 91. First channel; 92. Second channel; 93. Third channel; 94. Fourth channel; 95. Second lifting platform; 96. First stationary point; 97. Second stationary point; 98. Third stationary point; 99. Transition slope; 910. First lifting platform;

[0032] 10. hinged part; 101. abutting part; 102. connecting plate; 103. hinged rod; 11. first limiting plate; 111. second limiting plate; 112. limiting column; 113. pressure-bearing part; 114. pressure plate; 12. pressure detection gauge. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0035] Embodiment 1: This embodiment mainly introduces the basic structure and working principle of the pipe strength performance testing device, specifically:

[0036] like Figure 1-Figure 4 As shown, the present application provides a pipe strength performance testing device, including a base 1, which is a support part of the pipe strength performance testing device, and mainly provides support for the pipe strength performance test to ensure stable testing;

[0037] At least two groups of first support legs 2 are fixedly mounted on the base 1, and an upper support seat 3 is fixedly mounted on the first support legs 2. In this embodiment, an upper detection component is arranged on the upper support seat 3, and a lower detection component 4 is arranged on the base 1. The upper detection component cooperates with the lower detection component 4 to realize the compression resistance test of the pipe;

[0038] like Figure 3-Figure 4 As shown, the lower detection assembly 4 includes a clamping platform 41 placed on the base 1, two sets of motors 46 are fixedly installed on one side of the clamping platform 41, and a clamping rod is fixedly installed on the output end of the motor 46. The other end of the clamping rod is movably connected to the clamping platform 41 through a bearing, so that when the motor 46 is started, it is suitable for driving the clamping rod to rotate;

[0039] A clamp 47 is fixedly installed on both sides of the clamping rod, and a semicircular groove is opened on the clamp 47. In the initial state, the clamps 47 are in a state of being away from each other. When the motor 46 drives the clamping rod to rotate, the clamps 47 rotate synchronously, and the clamps 47 turn over. The semicircular grooves are close to each other and fit together to form a circle, so as to limit the position of the pipe and realize the clamping of the pipe;

[0040] However, the clamping table 41 placed on the base 1 is unstable, and in order to facilitate the test of the compressive strength performance of the pipe, continue to refer to Figure 3-Figure 4 A first cylinder 5 is also installed below the clamping platform 41. The lower end of the first cylinder 5 is fixedly connected to the base 1. The output end of the first cylinder 5 passes through the base 1 and is fixedly connected to the clamping platform 41. When the first cylinder 5 is started, it is suitable for driving the clamping platform 41 to move upward, thereby driving the pipe clamped on the clamping platform 41 to move upward, so as to facilitate the strength performance test of the pipe;

[0041] In order to further enhance the stability of the clamping table 41 and ensure its up and down movement, refer to Figure 4 At least two groups of second supporting legs 42 are fixedly mounted on the base 1. The second supporting legs 42 are located on both sides of the clamping platform 41. The upper ends of the second supporting legs 42 are fixedly connected to the upper supporting seat 3. A sliding rod 43 is fixedly mounted on the second supporting legs 42, and a sliding sleeve 44 is slidably mounted on the sliding rod 43. When subjected to external force, the sliding sleeve 44 is suitable for sliding on the sliding rod 43.

[0042] Linkage rods 45 are fixedly installed on both sides of the clamping platform 41. Both sides of the linkage rods 45 penetrate the clamping platform 41 and are fixedly connected to the sliding sleeve 44. Therefore, when the clamping platform 41 moves upward under the action of the first cylinder 5, the linkage rods 45 will move upward synchronously, and the linkage rods 45 drive the sliding sleeve 44 to slide on the sliding rod 43, further ensuring the stability of the clamping platform 41 during the upward and downward movement.

[0043] Continue to refer Figure 4A support rod 6 is also fixedly installed on the base 1, and the top end of the support rod 6 passes through the upper support seat 3. A cross bar 7 is hingedly installed on the top end of the support rod 6. The cross bar 7 is suitable for circumferential movement along the position where it is hinged with the support rod 6. The end of the cross bar 7 away from the support rod 6 is hooked with a first weight 71, and an opening is provided on the upper support seat 3 to facilitate the up and down movement of the first weight 71. A placement table 31 is also fixedly installed on the upper support seat 3. The placement table 31 is close to the opening, and a placement groove is provided on the placement table 31. The width of the placement groove is adapted to the width of the cross bar 7, so that when the cross bar 7 is not supported by anything, one end of it will be placed on the placement table 31, so that the cross bar 7 can be supported even when it is not working;

[0044] like Figure 4-Figure 6 As shown, a first limiting piece 11 is fixedly installed on the upper support seat 3, and the first limiting piece 11 is located below the cross bar 7 and at the center of the cross bar 7. A second limiting piece 111 is placed on the first limiting piece 11, and limiting columns 112 are fixedly connected to both sides of the bottom of the second limiting piece 111. The bottom of the limiting column 112 passes through the upper support seat 3, and a pressing plate 114 is fixedly installed at the bottom of the limiting column 112. When the pipe moves upward under the action of the first cylinder 5, the pipe is suitable for contacting with the pressing plate 114 and pushing the pressing plate 114 up. A fixing plate 114 is also fixedly installed on the pressing plate 114. A pressure piece 113 is installed, and the top of the pressure piece 113 passes through the upper support seat 3 and the first limiting plate 11. The top of the pressure piece 113 is fixedly connected to the second limiting plate 111. When the pressure plate 114 moves upward under the action of the pipe, the pressure piece 113 will move upward synchronously, and the limiting column 112 and the second limiting plate 111 will also move upward synchronously. Finally, the top of the pressure piece 113 contacts the cross bar 7 and lifts the cross bar 7. The lifting of the cross bar 7 will drive the first weight 71 to move upward. When the cross bar 7 is separated from the placement table 31, the pressure on the pipe is mostly the weight of the first weight 71.

[0045] In summary, when performing a strength performance test on a pipe, the staff first places the pipe to be tested between the clamps 47, and then starts the motor 46. The start of the motor 46 drives the clamping rod to rotate, and the rotation of the clamping rod drives the clamp 47 to flip. The clamps 47 flip and move closer to each other to clamp the pipe, thereby fixing the pipe.

[0046] Then the staff starts the first cylinder 5, and the start of the first cylinder 5 drives the clamping platform 41 to move up, and the upward movement of the clamping platform 41 drives the linkage rod 45 to move up, and the upward movement of the linkage rod 45 drives the sliding sleeve 44 to move up, and the sliding sleeve 44 slides on the surface of the sliding rod 43. At the same time, the pipe clamped on the clamping platform 41 moves up synchronously, and the pipe moves up synchronously and contacts the pressure plate 114. With the continuous action of the first cylinder 5, the pipe pushes the pressure plate 114 upward, and the upward movement of the pressure plate 114 drives the limit column 112, the pressure piece 113 and the second limit piece 111 to move up synchronously. When the output end of the first cylinder 5 extends to the limit position, the top end of the pressure piece 113 contacts the cross bar 7 and lifts the cross bar 7. At this time, the pressure on the pipe is the pressure of the first weight 71.

[0047] After the pressure-bearing member 113 lifts up the cross bar 7, it needs to maintain pressure for a period of time, that is, the staff does not need to do anything, so that the pipe is in a pressurized state for a certain period of time. After the pressure-bearing time is over, the staff controls the first cylinder 5 to close, and its output end retracts, and the pressure-bearing member 113 and the clamping table 41 return to the initial position under the retraction of the output end of the first cylinder 5, and the cross bar 7 also loses the supporting force and returns to the initial state. Then the staff starts the motor 46 to flip, and the clamp 47 flips and moves away under the drive of the motor 46. The staff can take out the pipe clamped between the clamps 47 to observe the changes in its outer tube after being compressed, and can measure the diameter of the pipe by a measuring tool to obtain the accurate value of the change in the outer tube of the pipe after being compressed;

[0048] Further, such as Figure 7 As shown, a pressure detection gauge 12 is fixedly mounted on the second limit plate 111 to test the pressure value of the pipe after the cross bar 7 is lifted, so that the result of the pipe strength test is more accurate;

[0049] Although the above test realizes the test of the compressive strength of the pipe, in order to make the test value more in line with the actual use scenario of the pipe, the staff can increase the weight of the first weight 71 by adding weights, so that the cross bar 7 will be subjected to greater pressure during the test. Usually, the first weight 71 is the standard test weight, and the subsequent weighting is to detect the ultimate pressure-bearing weight of the pipe. After adding weights and maintaining pressure for a certain period of time, the deformation degree of the pipe is within the qualified range, indicating that the batch of pipes is of high quality and the stability of the pipe is guaranteed.

[0050] Embodiment 2: Although the staff can perform a higher weight compression test on the pipe by adding weights during the inspection process, in order to ensure the quality of the pipe compression strength test, the weight added later is heavier. Usually, the staff cannot manually pick up the weights needed for the test. During the weight adding process, the staff needs to use a mechanical gripper to lift the weights and install them on the first weight 71. This process undoubtedly increases the work intensity of the staff.

[0051] To solve this problem, Figure 1 As shown, an adjustment slot 32 is provided on the upper support seat 3, and a second weight 72 is slidably installed on the cross bar 7. The second weight 72 is located in the adjustment slot 32, and the second weight 72 is located between the pressure-bearing member 113 and the first weight 71. When the second weight 72 is close to the pressure-bearing member 113, the pressure on the pressure-bearing member 113 is smaller than the pressure when the second weight 72 is close to the first weight 71, so that the staff can adjust the pressure on the pressure-bearing member 113 by the position of the second weight 72;

[0052] For the convenience of explanation, the end of the adjusting slot 32 close to the pressure-bearing member 113 is defined as the first end, and the end of the adjusting slot 32 close to the first weight 71 is defined as the second end. When the second weight 72 is located at the first end, the pressure-bearing member 113 lifts the cross bar 7, and the pressure on the pressure-bearing member 113 is the standard pressure. When the second weight 72 is close to the second section, the pressure on the pressure-bearing member 113 is greater than the pressure on the pressure-bearing member 113 when the second weight 72 is located at the first end. This pressure can be defined as the pressure on the pipe when a certain weight of material is placed on the soil after the pipe is buried in the soil, so that the staff only needs to adjust the position of the second weight 72 to adjust the pressure on the pressure-bearing member 113.

[0053] However, after adjusting the position of the second weight 72, the second weight 72 needs to be fixed at the position, and after the pressure-bearing member 113 lifts the cross bar 7, the second weight 72 cannot produce a horizontal displacement. In order to solve this problem, Figure 7-Figure 9 As shown, a slide groove 33 is further provided on one side of the upper support seat 3, and a limit block 8 is slidably installed on the slide groove 33, and a second cylinder 34 is fixedly installed on one side of the limit block 8, one side of the second cylinder 34 is fixedly connected to the upper support seat 3, and the output end of the second cylinder 34 is fixedly connected to the limit block 8. When the second cylinder 34 is started, it is suitable for driving the limit block 8 to slide in the slide groove 33;

[0054] A limiting groove 9 is provided on the limiting block 8, and a hinged member 10 for use with the limiting groove 9 is installed on one side of the second weight 72. The limiting groove 9 includes a first channel 91 provided on the limiting block 8, and the hinged member 10 includes a hinged rod 103 fixedly installed on the second weight 72, and a connecting plate 102 is movably installed on the side of the hinged rod 103 away from the second weight 72. The hinged rod 103 is suitable for swinging up and down along the point connected to the connecting plate 102, but cannot swing left and right. A resisting member 101 is fixedly installed on the side of the connecting plate 102 away from the hinged rod 103, and one end of the resisting member 101 resists in the first channel 91. In the present application, the resisting member 101 is made of a flexible material, such as rubber, but has a large elasticity, and the resisting member 101 is already in a squeezed state when in the first channel 91;

[0055] A third channel 93 is provided at the end of the first channel 91. The third channel 93 can be understood as an extension of the first channel 91. The third channel 93 is provided in the same direction as the first channel 91. The bottom height of the third channel 93 is higher than the bottom height of the first channel 91 and forms a blocking step. When the abutting member 101 slides in the first channel 91 and reaches the end of the first channel 91, the abutting member 101 cannot enter the third channel 93 due to the restriction of the blocking step. For the convenience of explanation, a first stationary point 96 is provided at the position where the first channel 91 is connected to the third channel 93.

[0056] Continue to refer Figure 8-Figure 9 A second channel 92 is provided at one side of the end of the first channel 91, and the end of the second channel 92 is communicated with the third channel 93, and a transition slope 99 is provided at the end of the second channel 92, and the highest position of the transition slope 99 is higher than the groove bottom position of the third channel 93 and forms a transition step, so that when the abutting member 101 enters the third channel 93 from the second channel 92, it cannot return to the second channel 92 from the third channel 93;

[0057] A boss is provided at the end of the third channel 93, the highest position of which is higher than the bottom of the third channel 93 and forms a first blocking step. For the convenience of explanation, a second stationary point 97 is provided at the position where the third channel 93 and the end of the second channel 92 communicate (i.e., at the first blocking step), and then when the abutting member 101 enters the third channel 93, it moves to the second stationary point 97 at most, so as to stop the abutting member 101.

[0058] A fourth channel 94 is provided at the other side of the end of the first channel 91. The fourth channel 94 is a channel with a longer stroke. Its end position is closer to the second cylinder 34 than the end position of the third channel 93. For the convenience of explanation, a third stationary point 98 is provided at the end position of the fourth channel 94. The third stationary point 98 is closer to the second cylinder 34 than the second stationary point 97, so as to facilitate the parking of the abutting member 101. At the same time, the highest position of the boss in the third channel 93 is higher than the bottom position of the groove of the fourth channel 94 and also forms a second blocking step. Therefore, after the abutting member 101 enters the fourth channel 94 from the first channel 91, it can only return to the first channel 91 from the fourth channel 94 along the original route.

[0059] However, in order to conveniently control whether the abutting member 101 enters the second channel 92 or the third channel 93 after reaching the first stationary point 96, or stays at the first stationary point 96, in this embodiment, Figure 8-Figure 9 As shown, a first lifting platform 910 is installed at the starting end of the second channel 92. The first lifting platform 910 is electrically controlled to be raised or lowered. In the initial state, the first lifting platform 910 is in a raised state, and its highest position is higher than the bottom height of the second channel 92 to block the abutment 101. When the abutment 101 needs to enter the second channel 92, the staff can control the first lifting platform 910 to descend until the top of the first lifting platform 910 drops to a position flush with the bottom of the second channel 92. At this time, the abutment 101 can enter the second channel 92 from the first channel 91;

[0060] A second lifting platform 95 is provided at the starting end of the fourth channel 94. The use method and movement principle of the second lifting platform 95 are consistent with those of the first lifting platform 910. Thus, the staff can determine whether the abutting member 101 can enter the fourth channel 94 by controlling the raising or lowering of the second lifting platform 95.

[0061] In this embodiment, a PLC control system is provided in the base 1 to facilitate the alternating opening and use of the electrical components;

[0062] In summary, when conducting the compressive strength performance test of the pipe, the steps of the pipe strength performance test in the first embodiment can be referred to. The first step is standard weight measurement. This process does not require additional operation by the staff. It is only necessary to start the control motor 46, and then control the first cylinder 5 to start, and push the pressure-bearing member 113 up through the pipe, and then lift the cross bar 7. It should be noted that in the initial state, the second weight 72 is located at the first end position. At this time, the second weight 72 is restricted by the adjustment slot 32, and the support member 101 is located at the initial position and cannot move in the direction away from the second cylinder 34. Therefore, the second weight 72 does not slide at this time, and the pressure on the pipe at this time can be defined as standard pressure detection, and the specific value is recorded by the pressure detection table 12;

[0063] When it is necessary to simulate pedestrians walking on the soil to exert greater pressure on the pipe, the staff can control the second lifting platform 95 to move downward, and the top of the second lifting platform 95 drops to a position flush with the bottom of the fourth channel 94. Then the staff starts the second cylinder 34, and the output end of the second cylinder 34 extends, driving the limit block 8 to slide in the slide groove 33. At the same time, the abutment 101 moves relatively in the first channel 91, and with the continuous action of the second cylinder 34, the abutment 101 passes through the first channel 91 into the fourth channel 94, and finally reaches the third stationary point 98. However, at this time, the output end of the second cylinder 34 does not The limit block 8 does not extend to the limit position, and then under the action of the second cylinder 34, the limit block 8 will slide in the direction away from the second cylinder 34, and drive the abutting member 101 to slide synchronously, thereby driving the second weight 72 to slide in the adjusting groove 32. When the second weight 72 has not slid to the middle of the adjusting groove 32, the output end of the second cylinder 34 has been output to the limit position. At this time, the second weight 72 has been separated from the first end. When the pressure-bearing member 113 lifts the cross bar 7 again, the pressure-bearing member 113 will be subjected to greater pressure than the first time the cross bar 7 is lifted, thereby simulating the pressure on the pipe when a pedestrian stands on the soil of the laid pipe;

[0064] It should be noted that when the abutting member 101 is located at the third stationary point 98, the abutting member 101 can slide toward a position away from the third stationary point 98. In order to avoid this risk, the pressure-bearing member 113 will lift the cross bar 7 to a higher position after moving upward, so that the cross bar 7 tilts downward toward the direction close to the support rod 6. Then, under the action of gravity, when the cross bar 7 is lifted, the second weight 72 will not slide in the direction away from the first end. After the test is completed, the staff controls the first cylinder 5 and the second cylinder 34 to close, and the abutting member 101 returns from the third stationary point 98 and finally returns to the initial position.

[0065] When it is necessary to simulate the pressure of pipes with objects piled on the soil, the pressure on the pipes in this process is greater than the pressure on the pipes when pedestrians walk on the soil. In this process, the staff can control the first lifting platform 910 to descend, and the first lifting platform 910 descends to make the second channel 92 communicate with the first channel 91. At this time, the second cylinder 34 is started again, and the support member 101 will slide from the initial position into the second channel 92 and finally reach the second stationary point 97. Since the second stationary point 97 is located at a position lower than the third stationary point The position 98 is farther from the second cylinder 34, and when the abutting member 101 moves to the second stationary point 97, the output end of the second cylinder 34 still has half of the stroke, and finally under the action of the second cylinder 34, the second weight 72 moves to the middle position of the adjusting slot 32. At this time, when the first cylinder 5 is started again to start the test, after the pressure-bearing member 113 lifts the cross bar 7, the pressure on the pressure-bearing member 113 is greater than the pressure on the second time the cross bar 7 is lifted, so as to simulate the pressure of the pipe when objects are piled on the soil;

[0066] When it is necessary to simulate the pressure condition of the pipe when a vehicle is running on the soil, the staff only needs to directly control the second cylinder 34 to start. The start of the second cylinder 34 drives the limit block 8 to move, and the abutment member 101 moves relatively to the first stationary point 96. However, at this time, there is still a lot of stroke left in the second cylinder 34, and then the second cylinder 34 will push the limit block 8 to continue to move. In this process, the second weight 72 will move a long distance and finally move to a position close to the second section. At this time, when the staff starts the first cylinder 5 to start testing, the pressure exerted by the cross bar 7 on the pressure member 113 is the largest, thereby simulating the pressure exerted on the pipe when a vehicle is running on the soil;

[0067] It should be noted that, in the above-mentioned use of the limit groove 9 and the hinge 10, the position of the second weight 72 is changed, thereby changing the pressure caused by the cross bar 7 on the pressure piece 113, so as to simulate the pressure change of the pipe in different scenes. This change is not only adjusted at the beginning of the detection, but also can be adjusted by starting the second cylinder 34 after the detection starts. In the adjustment process, the moving speed of the limit block 8 is determined according to the extension speed of the output end of the second cylinder 34. In the process of the limit block 8 driving the second weight 72 to move, the pressure caused by the cross bar 7 on the pressure piece 113 gradually changes from small to large or from large to small, and this change process is determined by the moving speed of the limit block 8. In comparison with the traditional weighting method, when adjusting the pressure on the pipe, there is a change process of gravity, rather than a sudden increase in gravity.

[0068] During the actual use of the pipe, when a vehicle passes over the soil, the front of the vehicle reaches the soil first and then the entire vehicle passes through the soil. The pressure gradually increases from small to large, and when the vehicle passes by, the pressure gradually decreases from large to small. Therefore, the coordinated use of the limit block 8 and the hinge 10 can make the pressure on the pipe more in line with the actual use scenario, thereby making the compression performance test of the pipe more realistic.

[0069] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pipe strength performance testing device, characterized in that: include: A base (1), wherein at least two groups of first supporting legs (2) are fixedly mounted on the base (1), and an upper supporting base (3) is fixedly mounted on the first supporting legs (2); A lower detection assembly (4), the lower detection assembly (4) being arranged on the base (1), the lower detection assembly (4) comprising a clamping table (41) placed on the base (1), two groups of motors (46) being fixedly mounted on one side of the clamping table (41), a clamping rod being fixedly mounted on the output end of the motor (46), and the other end of the clamping rod being movably connected to the clamping table (41) via a bearing; A clamp (47), the clamp (47) being fixedly mounted on two sides of the clamping rod, and the clamp (47) being provided with a semicircular groove; A first cylinder (5), the first cylinder (5) being mounted on the base (1), the output end of the first cylinder (5) being fixedly connected to the bottom of the clamping platform (41); A support rod (6), the support rod (6) being fixedly mounted on the base (1), the top end of the support rod (6) passing through the upper support seat (3); A cross bar (7) hingedly mounted on the top end of the support bar (6); an end of the cross bar (7) away from the support bar (6) is hooked to hold a first weight (71); a placement table (31) is fixedly mounted on the upper support seat (3) at a position close to the first weight (71); a second weight (72), the second weight (72) being slidably mounted on the crossbar (7), the upper support seat (3) being provided with an adjustment slot (32), the second weight (72) being located in the adjustment slot (32); A first limiting plate (11) is fixedly mounted on the upper support seat (3), a second limiting plate (111) is placed on the first limiting plate (11), both sides of the bottom of the second limiting plate (111) are fixedly connected to limiting columns (112), the bottom of the limiting column (112) passes through the upper support seat (3), a pressure plate (114) is fixedly mounted on the bottom of the limiting column (112), a pressure-bearing member (113) is fixedly mounted on the pressure plate (114), the top of the pressure-bearing member (113) passes through the upper support seat (3) and the first limiting plate (11) and is fixedly connected to the second limiting plate (111), and a pressure detection gauge (12) is fixedly mounted on the second limiting plate (111); A slide groove (33) is provided on one side of the upper support seat (3), a limit block (8) is slidably mounted on the slide groove (33), a second cylinder (34) is fixedly mounted on one side of the limit block (8), and one side of the second cylinder (34) is fixedly connected to the upper support seat (3); The limit block (8) is provided with a limit slot (9); a hinged member (10) for use with the limit slot (9) is installed on one side of the second weight (72); the limit slot (9) comprises a first channel (91) provided on the limit block (8); the hinged member (10) comprises a hinged rod (103) fixedly installed on the second weight (72); a connecting plate (102) is movably installed on one side of the hinged rod (103); a supporting member (101) is fixedly installed on one side of the connecting plate (102); one end of the supporting member (101) is supported in the first channel (91); A third channel (93) is provided at the end of the first channel (91); the bottom height of the third channel (93) is higher than the bottom height of the first channel (91) and forms a blocking step; a first stagnation point (96) is provided at the position where the first channel (91) and the third channel (93) communicate with each other; A second channel (92) is provided at one side of the end of the first channel (91), the end of the second channel (92) is communicated with the third channel (93), a transition slope (99) is provided at the end of the second channel (92), the highest position of the transition slope (99) is higher than the bottom position of the groove of the third channel (93) and forms a transition step; A boss is provided at the end of the third channel (93), the highest position of the boss is higher than the bottom of the groove of the third channel (93) and forms a first blocking step, and a second stationary point (97) is provided at the position where the third channel (93) communicates with the end of the second channel (92); A fourth channel (94) is provided on the other side of the end of the first channel (91), a third stagnation point (98) is provided at the end of the fourth channel (94), the position of the third stagnation point (98) being closer to the second cylinder (34) than the position of the second stagnation point (97), the highest position of the boss being higher than the groove bottom position of the fourth channel (94) and forming a second blocking step.

2. A pipe strength performance testing device according to claim 1, characterized in that: A PLC control system is arranged in the base (1); a first lifting platform (910) is installed at the starting end of the second channel (92); and the first lifting platform (910) is connected to the PLC control system by signal.

3. A pipe strength performance testing device according to claim 2, characterized in that: A second lifting platform (95) is provided at the starting end of the fourth channel (94), and the second lifting platform (95) is connected to the PLC control system signal.

4. A pipe strength performance testing device according to claim 3, characterized in that: At least two groups of second supporting legs (42) are fixedly mounted on the base (1), the second supporting legs (42) are located on both sides of the clamping platform (41), the upper ends of the second supporting legs (42) are fixedly connected to the upper supporting seat (3), a sliding rod (43) is fixedly mounted on the second supporting leg (42), a sliding sleeve (44) is slidably mounted on the sliding rod (43), and linkage rods (45) are fixedly mounted on both sides of the clamping platform (41), and both sides of the linkage rod (45) pass through the clamping platform (41) and are fixedly connected to the sliding sleeve (44).

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