A pipe radial fatigue performance testing machine
By designing a test barrier mechanism in the radial fatigue performance testing machine for pipes, and using barrier plates and columns to form a barrier, the problem of debris splashing when the pipe sample breaks is solved, thus improving safety and convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAN MAURER PETROLEUM ENG LAB
- Filing Date
- 2025-07-17
- Publication Date
- 2026-06-16
AI Technical Summary
During the use of the radial fatigue performance testing machine for pipes, when the clamp holds the pipe sample, the debris from the broken pipe sample is easily scattered, affecting the safety of use.
A test barrier mechanism was designed, including a barrier plate, a barrier rod, a fixed seat, a movable seat, and a barrier opening and closing mechanism. A barrier medium is formed on the front side of the fixture by a column, and the barrier plate is adjustable to prevent debris from splashing.
The safety of the testing machine has been improved, and the barrier plate is easy to open and close and adaptable, ensuring that debris does not injure the staff.
Smart Images
Figure CN224365902U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing equipment technology, and more specifically, to a radial fatigue performance testing machine for pipes. Background Technology
[0002] The radial fatigue performance testing machine for pipes is a specialized device used to evaluate the ability of pipes to resist fatigue failure under radial cyclic loads. It is widely used in the automotive, aerospace, and petrochemical industries for quality inspection and performance verification of various types of pipes, including metal pipes, plastic pipes, and composite pipes. The equipment mainly consists of the following core components: a loading system: applying radial cyclic force or displacement load to the pipe through a servo motor, hydraulic cylinder, or pneumatic device, capable of outputting various load waveforms such as sine waves and square waves; a clamping device: designed according to pipe specifications to ensure stable positioning of the pipe during testing, avoiding stress concentration or test deviation caused by improper clamping; and a measurement system: equipped with force sensors, displacement sensors, and strain gauges to monitor the load magnitude, pipe deformation, and fatigue damage state in real time, and to transmit the data via digital... According to the data acquisition system, the control system uses computer control technology to accurately set parameters such as load amplitude, frequency, and number of cycles, and automatically completes the test process. When the pipe breaks or the preset number of cycles is reached, the machine automatically stops. The radial fatigue performance testing machine for pipes fixes the sample through a clamping device. The control system drives the loading mechanism to apply a periodic alternating load to the radial direction of the pipe. Force and displacement sensors collect load and deformation data in real time, which are then processed and fed back to the control system to maintain the set loading accuracy. As the number of cycles increases, fatigue damage gradually accumulates inside the pipe until cracks or fractures occur. The equipment automatically records the number of cycles and load parameters at the time of failure to evaluate the radial fatigue performance of the pipe. Since the pipe sample will produce flying debris when it reaches the limit fracture during testing, it is necessary to perform a test isolation operation.
[0003] In related technologies, during the use of a radial fatigue performance testing machine for pipes, the pipe sample is typically held in a test fixture, and the machine applies a test force to the sample to perform the test.
[0004] However, in the current use of the radial fatigue performance testing machine for pipes, both the clamp and the pipe sample are in an open state when the clamp holds the pipe sample for testing. As the pipe sample is tested to the limit of fracture, the debris from the fracture can easily fly and injure the staff, affecting the safety of the radial fatigue performance testing machine. Utility Model Content
[0005] To overcome the above deficiencies, this utility model provides a radial fatigue performance testing machine for pipes that overcomes or at least partially solves the above technical problems.
[0006] This utility model is implemented as follows:
[0007] This utility model provides a radial fatigue performance testing machine for pipes, including a testing machine, on both sides of the top of the testing machine, and a clamp is installed on the inner side of the column;
[0008] The test barrier mechanism includes:
[0009] A barrier plate; the barrier plate is movably connected to both sides of the front side of the top of the testing machine, and a barrier rod is movably connected to the bottom of the rear side of the barrier plate;
[0010] Fixed base; the fixed base is fixedly connected to the outside of the barrier rod, and the outside of the barrier rod is movably connected to a movable base located on the rear side of the column;
[0011] A blocking opening and closing mechanism; the blocking opening and closing mechanism is fixedly connected to the front side of the top of the blocking rod.
[0012] In a preferred embodiment, the barrier opening and closing mechanism includes an opening and closing frame, an opening and closing rail, and an opening and closing plate. The opening and closing frame is fixedly connected to the front side of the top of the barrier rod, the opening and closing rail is movably connected to both sides of the front side inside the opening and closing frame, the front side of the opening and closing rail is fixedly connected to the rear side of the barrier plate, and the opening and closing plate is fixedly connected to the inner side of the opening and closing rail.
[0013] In a preferred embodiment, a translation groove is provided on the inner side of the barrier plate, and a translation plate located inside the opening and closing plate is movably connected to the inside of the translation groove.
[0014] In a preferred embodiment, a positioning cylinder communicating with a translation groove is fixedly connected to the inner side of the top of the barrier plate, and a positioning column is movably connected inside the positioning cylinder.
[0015] In a preferred embodiment, the top of the translation plate is provided with a positioning groove that communicates with the positioning cylinder, and the bottom of the positioning column is located inside the positioning groove.
[0016] In a preferred embodiment, a connecting groove is provided on the rear side of the outer side of the barrier plate, and a connecting seat is movably connected inside the connecting groove. The outer side of the connecting seat is fixedly connected to the inner side of the movable seat.
[0017] In a preferred embodiment, a screw hole is provided on the rear side of the connecting seat, and a stud that extends through to the rear side of the barrier rod is threaded into the internal thread of the screw hole.
[0018] In a preferred embodiment, a support groove is provided on the front side of the inner wall of the connecting groove, and the front side of the stud is located inside the support groove.
[0019] The radial fatigue performance testing machine for pipes provided by this utility model has the following beneficial effects:
[0020] 1. By setting up a test barrier mechanism, a barrier medium can be formed on the front side of the fixture through the column to block the debris generated when the pipe sample breaks during the test. This prevents the broken pipe sample debris from flying directly forward and accidentally injuring the staff, thus improving the safety of the test machine.
[0021] 2. By setting up a barrier opening and closing mechanism, the barrier plate and the barrier rod can be connected to open and close, so that the barrier plate can be moved horizontally to open and close during use. This avoids the barrier plate being difficult to open and close or separating from the barrier rod during use, thus improving the convenience and stability of opening and closing the barrier plate.
[0022] 3. By setting up translation grooves and translation plates, users can be provided with a medium to adjust the blocking range of the barrier plate, so that users can adjust the blocking range of the barrier plate according to actual blocking needs, thus improving the adaptability of the barrier plate in blocking use. Attached Figure Description
[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0024] Figure 1 This is an overall perspective view provided by an embodiment of the present utility model;
[0025] Figure 2 A rear-view three-dimensional structural diagram of the barrier plate provided for an embodiment of this utility model;
[0026] Figure 3 A three-dimensional cross-sectional structural diagram of the barrier rod provided for an embodiment of this utility model;
[0027] Figure 4 A partial three-dimensional cross-sectional view of the barrier plate provided for an embodiment of this utility model;
[0028] In the diagram: 1. Testing machine; 2. Column; 3. Fixture; 4. Barrier plate; 5. Barrier rod; 6. Fixed seat; 7. Movable seat; 8. Opening and closing frame; 9. Opening and closing rail; 10. Opening and closing plate; 11. Translation groove; 12. Translation plate; 13. Positioning cylinder; 14. Positioning post; 15. Positioning groove; 16. Connecting groove; 17. Connecting seat; 18. Screw hole; 19. Screw; 20. Support groove. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0030] Reference Figures 1-4 This utility model provides a technical solution: a radial fatigue performance testing machine for pipes, including a testing machine 1 and a testing barrier mechanism. Columns 2 are installed on both sides of the top of the testing machine 1, and clamps 3 are installed on the inner side of the columns 2. The columns 2 can form a barrier medium in front of the clamps 3 to block the debris generated when the pipe sample breaks during testing, thus preventing the debris from flying directly forward and injuring the staff, thereby improving the safety of the testing machine 1.
[0031] Reference Figures 1-4 In a preferred embodiment, the test barrier mechanism includes a barrier plate 4, which is movably connected to both sides of the front top of the test machine 1. A barrier rod 5 is movably connected to the bottom rear side of the barrier plate 4. A fixed seat 6 is fixedly connected to the outside of the barrier rod 5. A movable seat 7 located on the rear side of the column 2 is movably connected to the outside of the barrier rod 5. A barrier opening and closing mechanism is fixedly connected to the front top of the barrier rod 5. Through the cooperation of the fixed seat 6 and the movable seat 7, the barrier rod 5 is clamped to the inside of the column 2, so that the barrier plate 4 is installed on both sides of the front top of the test machine 1. After the clamp 3 clamps the external pipe sample, the barrier plate 4 is moved inward by hand, so that the barrier plate 4 is in front of the clamp 3. The barrier medium formed on the side can block splashes during pipe sample testing. The barrier opening and closing mechanism includes an opening and closing frame 8, an opening and closing rail 9, and an opening and closing plate 10. The opening and closing frame 8 is fixedly connected to the front side of the top of the barrier rod 5. The opening and closing rail 9 is movably connected to both sides of the front side inside the opening and closing frame 8. The front side of the opening and closing rail 9 is fixedly connected to the rear side of the barrier plate 4. The opening and closing plate 10 is fixedly connected to the inner side of the opening and closing rail 9. It can open and close the barrier plate 4 and the barrier rod 5, so that the barrier plate 4 can be moved horizontally to open and close during use. This avoids the barrier plate 4 being difficult to open and close or separating from the barrier rod 5 during use, thus improving the convenience and stability of opening and closing the barrier plate 4.
[0032] Reference Figures 2-4In a preferred embodiment, a translation groove 11 is provided on the inner side of the barrier plate 4. The translation groove 11 is movably connected to a translation plate 12 located inside the opening and closing plate 10. This provides a medium for users to adjust the blocking range of the barrier plate 4, so that users can adjust the blocking range of the barrier plate 4 according to actual blocking needs. This improves the adaptability of the barrier plate 4 in blocking use. A positioning cylinder 13 connected to the translation groove 11 is fixedly connected to the inner side of the top of the barrier plate 4. A positioning column 14 is movably connected inside the positioning cylinder 13, which can perform insertion and positioning work between the translation plate 12 and the barrier plate 4 after translation. This improves the positioning convenience of the translation plate 12.
[0033] Reference Figures 2-4 In a preferred embodiment, a positioning groove 15 communicating with the positioning cylinder 13 is provided on the top of the translation plate 12, and the bottom of the positioning post 14 is located inside the positioning groove 15, which can provide multiple force application spaces for the positioning post 14 to be inserted and positioned, thus improving the insertion and positioning flexibility of the positioning post 14. A connecting groove 16 is provided on the rear side of the outer side of the barrier plate 4, and a connecting seat 17 is movably connected inside the connecting groove 16. The outer side of the connecting seat 17 is fixedly connected to the inner side of the movable seat 7, which can perform the movable connection and anti-separation work between the movable seat 7 and the barrier rod 5, thus improving the connection effect between the movable seat 7 and the barrier rod 5.
[0034] Reference Figures 2-3 In a preferred embodiment, a screw hole 18 is provided on the rear side of the connecting seat 17, and a stud 19 extending to the rear side of the blocking rod 5 is threaded into the screw hole 18. The connecting seat 17 can apply a clamping force to the movable seat 7, thus improving the convenience of the clamping slot of the movable seat 7. A support groove 20 is provided on the front side of the inner wall of the connecting groove 16, and the front side of the stud 19 is located inside the support groove 20. This can provide stable support between the stud 19 and the connecting groove 16 during operation, thus improving the working stability of the stud 19.
[0035] Specifically, the working process or principle of this radial fatigue performance testing machine for pipes is as follows: During use, the handheld blocking rod 5, through the opening and closing frame 8 and the opening and closing rail 9, moves the blocking plate 4 to both sides of the front top of the testing machine 1, positioning the column 2 inside the fixed seat 6 and the movable seat 7. Then, the handheld stud 19 rotates to engage the screw hole 18 through the connecting seat 17, applying a forward-moving threaded thrust to the movable seat 7. This causes the movable seat 7, in conjunction with the fixed seat 6, to clamp and install the blocking rod 5 inside the column 2. This, in turn, causes the blocking rod 5, in conjunction with the opening and closing frame 8 and the opening and closing rail 9, to move and install the blocking plate 4 horizontally on both sides of the front top of the testing machine 1. At this time, the connecting seat 17 moves within the connecting groove 16, providing a moving connection between the movable seat 7 and the blocking rod 5 to prevent displacement. Simultaneously, the stud 19 rotates within the support groove 20, which provides stable support for the stud. Subsequently, the machine can be adjusted according to actual needs. To meet the barrier requirements, the handheld translation plate 12 moves inward within the translation groove 11 to adjust the barrier range of the barrier plate 4. After the translation plate 12 is adjusted, the handheld positioning column 14 moves downward and inserts into the positioning groove 15 to perform the insertion and positioning work between the translation plate 12 and the barrier plate 4. When the clamp 3 holds the external pipe sample, the handheld translation plate 12 drives the barrier plate 4 to move inward, so that the inner sides of the translation plates 12 fit together, causing the barrier plate 4 to cooperate with the translation plate 12 to form a barrier medium on the front side of the clamp 3 and the column 2. During this process, the opening and closing rail 9 moves with the barrier plate 4 inside the opening and closing frame 8 to perform the translation connection work between the barrier plate 4 and the barrier rod 5. When the clamp 3 cooperates with the column 2 and the testing machine 1 to test the pipe sample, the barrier plate 4 cooperates with the translation plate 12 to block and protect the splashes generated when the pipe sample breaks during the test.
[0036] It should be noted that the testing machine 1, the column 2 and the fixture 3 are all existing devices or equipment, or devices or equipment that can be implemented with existing technology. Their power supply, specific composition and principle are clear to those skilled in the art, so they will not be described in detail.
Claims
1. A radial fatigue performance testing machine for pipes, comprising a testing machine (1), wherein columns (2) are installed on both sides of the top of the testing machine (1), and clamps (3) are installed on the inner side of the columns (2), characterized in that... ； The test barrier mechanism includes: The barrier plate (4) is movably connected to both sides of the front top of the test machine (1), and the bottom of the rear side of the barrier plate (4) is movably connected to the barrier rod (5). Fixed seat (6); the fixed seat (6) is fixedly connected to the outside of the barrier rod (5), and the outside of the barrier rod (5) is movably connected to a movable seat (7) located on the rear side of the column (2); The blocking opening and closing mechanism is fixedly connected to the front side of the top of the blocking rod (5).
2. The radial fatigue performance testing machine for pipes according to claim 1, characterized in that, The barrier opening and closing mechanism includes an opening and closing frame (8), an opening and closing rail (9), and an opening and closing plate (10). The opening and closing frame (8) is fixedly connected to the front side of the top of the barrier rod (5). The opening and closing rail (9) is movably connected to both sides of the front side inside the opening and closing frame (8). The front side of the opening and closing rail (9) is fixedly connected to the rear side of the barrier plate (4). The opening and closing plate (10) is fixedly connected to the inner side of the opening and closing rail (9).
3. The radial fatigue performance testing machine for pipes according to claim 2, characterized in that, The barrier plate (4) has a translation groove (11) on its inner side, and the translation groove (11) is movably connected to a translation plate (12) located inside the opening and closing plate (10).
4. The radial fatigue performance testing machine for pipes according to claim 3, characterized in that, The inner side of the top of the barrier plate (4) is fixedly connected to a positioning cylinder (13) that communicates with the translation groove (11), and the positioning cylinder (13) is movably connected to a positioning column (14).
5. A radial fatigue performance testing machine for pipes according to claim 4, characterized in that, The top of the translation plate (12) is provided with a positioning groove (15) that communicates with the positioning cylinder (13), and the bottom of the positioning column (14) is located inside the positioning groove (15).
6. The radial fatigue performance testing machine for pipes according to claim 1, characterized in that, A connecting groove (16) is provided on the rear side of the outer side of the barrier plate (4). A connecting seat (17) is movably connected inside the connecting groove (16). The outer side of the connecting seat (17) is fixedly connected to the inner side of the movable seat (7).
7. A radial fatigue performance testing machine for pipes according to claim 6, characterized in that, The connecting seat (17) has a screw hole (18) on its rear side, and the screw hole (18) is threaded with a stud (19) that extends to the rear side of the blocking rod (5).
8. A radial fatigue performance testing machine for pipes according to claim 7, characterized in that, A support groove (20) is provided on the front side of the inner wall of the connecting groove (16), and the front side of the stud (19) is located inside the support groove (20).