PE water supply pipe bending performance testing device

Abstract

The utility model belongs to the technical field of PE water supply pipe performance testing, particularly relates to a PE water supply pipe bending performance testing device, and provides the following scheme aiming at the problems that the tested test data is less and the overall performance of a PE water supply pipe cannot be evaluated in the background technology: the PE water supply pipe bending performance testing device comprises a test board, and the inner wall of the test board is connected with a sliding column in a sliding manner; a pointer is welded to the outer wall of one side of the sliding column. According to the utility model, the movement distance of the sliding column can be determined according to the scale marks on the scale plate pointed by the pointer, so that the tensile property of the pipe body is judged, the synchronous test of multiple properties is realized, a good performance reference value is achieved, and when the arm frame is driven by the servo motor to rotate in a reciprocating manner, the pipe body can be repeatedly folded along the bending point, and the test efficiency is improved. In the process that the pipeline is continuously folded to be broken, the anti-fatigue performance of the pipeline is tested, the service life of the PE water supply pipe is further known, more experimental data are tested, and the overall performance of the PE water supply pipe is conveniently and comprehensively evaluated.

Description

Technical Field

[0001] The utility model relates to the technical field of performance testing of PE water supply pipes, in particular to a device for testing the bending performance of PE water supply pipes. Background Art

[0002] PE water supply pipes are pipes made of polyethylene materials and are mainly used in water supply systems. The advantages of PE water supply pipes include corrosion resistance, impact resistance, flexibility, and good low-temperature resistance, and they can be used at lower temperatures without embrittlement. Compared with traditional iron water supply pipes, PE water supply pipes do not rust and have a long service life, so they are widely used in many fields such as building water supply, drainage, buried drainage pipes, building heating, and gas transmission pipes.

[0003] Before the PE water supply pipes leave the factory, in order to ensure the qualification of the products, it is necessary to conduct sampling tests on the pipes of the same batch. Among the test items, there is a bending performance test. However, during the test process, the testing machine can only test the bending point of the pipe and the force required for bending, and cannot obtain more experimental data, making it difficult to comprehensively evaluate the overall performance of the PE water supply pipes. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a device for testing the bending performance of PE water supply pipes, which overcomes the deficiencies of the prior art and effectively solves the problem that the test data obtained is less and the overall performance of the PE water supply pipes cannot be evaluated.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A device for testing the bending performance of PE water supply pipes, including a test bench. A sliding column is slidably connected to the inner wall of the test bench, and a pointer is welded to the outer wall of one side of the sliding column. An observation hole is opened on the outer wall of the top of the pointer, and a scale plate is arranged on the outer wall of the top of the test bench. A fastening knob is screwed on the outer wall of the bottom of the sliding column. Symmetrically distributed connecting plates are arranged on the top of the test bench, and a first clamping plate is welded to the outer wall of one side of the connecting plate. A second clamping plate is arranged on one side of the first clamping plate, and a spring is connected between the second clamping plate and the connecting plate;

[0007] A boom is welded to the outer wall of the other side of one of the connecting plates, and a servo motor is fixedly connected to the outer wall of one end of the boom.

[0008] Preferably, a chute is opened on the outer wall of the top of the test bench, and the sliding column is slidably connected to the inner wall of the chute.

[0009] Preferably, a support frame is welded to the outer wall of the top of the test bench, and an electric push rod is fixedly connected to the outer wall of the top of the support frame through bolts. A pressure sensor is fixedly connected to the piston rod of the electric push rod, and a pressing head is installed on the outer wall of the bottom of the pressure sensor.

[0010] Preferably, a pipe body is arranged between the first clamping plate and the second clamping plate.

[0011] Preferably, a supporting plate is welded to the outer wall of the top of the test bench, and one of the connecting plates is arranged on the top of the supporting plate, and the other connecting plate is welded to the outer wall of the top of the sliding column.

[0012] Preferably, symmetrically distributed guide rods are welded to the inner wall of one side of the connecting plate, and the second clamping plate is slidably connected to the inner wall of the guide rods.

[0013] Preferably, a PLC controller is fixedly connected to the outer wall of the top of the test bench by bolts, and the PLC controller is connected to the servo motor, the electric push rod and the pressure sensor through signal lines.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. For the PE water supply pipe bending performance testing device of this design, when the pressing head squeezes the pipe body to make it bend, the sliding column will move along the sliding groove. By using the pressure sensor to detect the pressure value, under the condition of obtaining accurate pressure values, the moving distance of the sliding column can also be determined according to the pointer pointing to the scale line on the scale plate, so as to judge the tensile performance of the pipe body, realizing the synchronous testing of multiple performances and playing a very good performance reference value;

[0016] 2. For the PE water supply pipe bending performance testing device of this design, after the pipe body is bent, when the servo motor drives the boom to rotate reciprocally, the pipe body can be repeatedly folded along the bending point. During the process of the pipe continuously folding until it breaks, the fatigue resistance of the pipe is tested, further understanding the service life of the PE water supply pipe, testing more experimental data, and facilitating the comprehensive evaluation of the overall performance of the PE water supply pipe. Description of the Drawings

[0017] Figure 1 is the front view of the overall structure of a PE water supply pipe bending performance testing device proposed by the present utility model;

[0018] Figure 2 is the rear view of the overall structure of a PE water supply pipe bending performance testing device proposed by the present utility model;

[0019] Figure 3 is the schematic diagram of the sliding column connection structure of a PE water supply pipe bending performance testing device proposed by the present utility model;

[0020] Figure 4 is the schematic diagram of the fastening knob connection structure of a PE water supply pipe bending performance testing device proposed by the present utility model.

[0021] In the figure: 1. Test bench; 2. Slide post; 3. Pointer; 4. Observation hole; 5. Scale plate; 6. Tightening knob; 7. Connecting plate; 8. First clamping plate; 9. Second clamping plate; 10. Spring; 11. Boom; 12. Servo motor; 13. Support frame; 14. Electric push rod; 15. Pressure sensor; 16. Pressing head; 17. Pipe body; 18. Support plate; 19. Guide rod; 20. PLC controller. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] Embodiment 1, referring to Figures 3 to 4 , a bending performance test device for PE water supply pipes, including a test bench 1, a slide post 2 is slidably connected to the inner wall of the test bench 1, and a pointer 3 is welded to the outer wall of one side of the slide post 2. An observation hole 4 is opened on the outer wall of the top of the pointer 3, and a scale plate 5 is arranged on the outer wall of the top of the test bench 1. A tightening knob 6 is screwed on the outer wall of the bottom of the slide post 2. Symmetrically distributed connecting plates 7 are arranged on the top of the test bench 1, and a first clamping plate 8 is welded to the outer wall of one side of the connecting plate 7. A second clamping plate 9 is arranged on one side of the first clamping plate 8, and a spring 10 is connected between the second clamping plate 9 and the connecting plate 7.

[0024] In this embodiment, when the pressing head 16 squeezes the pipe body 17 to cause it to bend, the slide post 2 will move along the chute. The pressure sensor 15 is used to detect the pressure value. Under the condition of obtaining an accurate pressure value, the moving distance of the slide post 2 can also be determined according to the scale line on the scale plate 5 pointed by the pointer 3, so as to judge the tensile performance of the pipe body 17, realizing the synchronous test of multiple performances and playing a good role in performance reference.

[0025] Embodiment 2, referring to Figures 2 to 3 , a bending performance test device for PE water supply pipes, a boom 11 is welded to the outer wall of the other side of one of the connecting plates 7, and a servo motor 12 is fixedly connected to the outer wall of one end of the boom 11.

[0026] In this embodiment, after the pipe body 17 is bent, when the servo motor 12 drives the boom 11 to rotate reciprocally, the pipe body 17 can be repeatedly folded along the bending point. During the process of the pipe continuously folding until it breaks, the fatigue resistance of the pipe is tested, and the service life of the PE water supply pipe is further understood. More experimental data are tested, which is convenient for comprehensively evaluating the overall performance of the PE water supply pipe.

[0027] Referring to Figure 1 , a chute is opened on the outer wall of the top of the test bench 1, and the slide post 2 is slidably connected to the inner wall of the chute.

[0028] Reference Figure 1 , a support frame 13 is welded to the outer wall of the top of the test bench 1, and an electric push rod 14 is fixedly connected to the outer wall of the top of the support frame 13 through bolts. The piston rod of the electric push rod 14 is fixedly connected with a pressure sensor 15, and a pressure head 16 is installed on the outer wall of the bottom of the pressure sensor 15.

[0029] Reference Figures 2 to 3 , a pipe body 17 is arranged between the first clamping plate 8 and the second clamping plate 9.

[0030] Reference Figures 2 to 3 , a support plate 18 is welded to the outer wall of the top of the test bench 1, and one of the connecting plates 7 is arranged on the top of the support plate 18, and the other connecting plate 7 is welded to the outer wall of the top of the sliding column 2.

[0031] Reference Figure 3 , symmetrically distributed guide rods 19 are welded to the inner wall of one side of the connecting plate 7, and the second clamping plate 9 is slidably connected to the inner wall of the guide rod 19.

[0032] Reference Figures 1 to 2 , a PLC controller 20 is fixedly connected to the outer wall of the top of the test bench 1 through bolts, and the PLC controller 20 is connected to the servo motor 12, the electric push rod 14 and the pressure sensor 15 through signal lines.

[0033] Working principle: First, the prepared pipe body 17 is placed into the two sets of clamping assemblies composed of the first clamping plate 8 and the second clamping plate 9, and the pipe body 17 is fixed by the elasticity of the spring 10. Then, the fastening knob 6 is screwed out, and the pressure head 16 is pushed downward by the electric push rod 14 to squeeze the pipe body 17. The pressure sensor 15 is used to monitor the pressure value. When the pipe body 17 is bent, the moving distance of the sliding column 2 can be determined according to the pointer 3 pointing to the scale line on the scale plate 5, so as to judge the tensile performance of the pipe body 17. On this basis, when the arm 11 is driven by the servo motor 12 to rotate reciprocally, the pipe body 17 can be folded back and forth along the bending point. During the process of the pipe body 17 being continuously folded until it breaks, the fatigue resistance of the pipe body 17 is tested.

[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A PE water supply pipe bending performance testing device, comprising a test bench (1), characterized in that: The inner wall of the test bench (1) is slidably connected to a sliding column (2), and a pointer (3) is welded to the outer wall of one side of the sliding column (2), an observation hole (4) is opened on the outer wall of the top of the pointer (3), and a scale plate (5) is arranged on the outer wall of the top of the test bench (1), and a tightening knob (6) is screwed on the outer wall of the bottom of the sliding column (2), and a symmetrically distributed connecting plate (7) is arranged on the top of the test bench (1), and a first clamping plate (8) is welded to the outer wall of one side of the connecting plate (7), a second clamping plate (9) is arranged on one side of the first clamping plate (8), and a spring (10) is connected between the second clamping plate (9) and the connecting plate (7); An arm (11) is welded to the outer wall of the other side of one of the connecting plates (7), and a servo motor (12) is fixedly connected to the outer wall of one end of the arm (11).

2. A PE water supply pipe bending performance testing device according to claim 1, characterized in that: The top outer wall of the test bench (1) is provided with a slide groove, and the slide column (2) is slidably connected to the inner wall of the slide groove.

3. A PE water supply pipe bending performance testing device according to claim 1, characterized in that: A support frame (13) is welded to the top outer wall of the test bench (1), and an electric push rod (14) is fixedly connected to the top outer wall of the support frame (13) by bolts, a pressure sensor (15) is fixedly connected to the piston rod of the electric push rod (14), and a pressure head (16) is installed on the bottom outer wall of the pressure sensor (15).

4. A PE water supply pipe bending performance testing device according to claim 1, characterized in that: The tube body (17) is arranged between the first clamping plate (8) and the second clamping plate (9).

5. A PE water supply pipe bending performance testing device according to claim 1, characterized in that: A support plate (18) is welded to the top outer wall of the test bench (1), one of the connecting plates (7) is arranged on the top of the support plate (18), and the other connecting plate (7) is welded to the top outer wall of the sliding column (2).

6. A PE water supply pipe bending performance testing device according to claim 1, characterized in that: A symmetrically distributed guide rod (19) is welded to the inner wall of one side of the connecting plate (7), and the second clamping plate (9) is slidably connected to the inner wall of the guide rod (19).

7. A PE water supply pipe bending performance testing device according to claim 1, characterized in that: The top outer wall of the test bench (1) is fixedly connected to a PLC controller (20) by means of bolts, and the PLC controller (20) is connected to the servo motor (12), the electric push rod (14) and the pressure sensor (15) by means of signal lines.

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