A spacing-adjustable clamp suitable for diaphragm three-point bending fatigue test

Abstract

The utility model discloses a spacing adjustable clamp suitable for diaphragm three point bending fatigue test relates to diaphragm fatigue test technical field, and this clamp includes base, and the left and right sides of base upper end respectively are equipped with two mobile structures, and each mobile structure upper end is equipped with a set of clamping piece no.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm fatigue testing technology, specifically an adjustable-spacing fixture suitable for three-point bending fatigue testing of diaphragms. Background Technology

[0002] Diaphragms are widely used engineering materials. Different scenarios have different performance requirements for them, and their thickness varies greatly. In actual work, they are subjected to complex stresses.

[0003] Currently, diaphragm bending fatigue tests mostly use different special fixtures for different thicknesses, which has obvious limitations: changing fixtures is time-consuming and laborious, and they are easily damaged or installed inaccurately, affecting the test progress and results; different fixtures have differences, making it difficult to ensure consistent and continuous test conditions, and failing to fully reflect the performance change pattern.

[0004] Based on this, an adjustable-spacing fixture suitable for three-point bending fatigue testing of diaphragms is now provided, which can eliminate the drawbacks of existing fixtures. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable-spacing fixture suitable for three-point bending fatigue testing of diaphragms, in order to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An adjustable-spacing fixture for three-point bending fatigue testing of diaphragms includes a base. Two movable structures are respectively installed on the left and right sides of the upper end of the base. Each movable structure is equipped with a set of clamping components. The two sets of clamping components clamp and fix the left and right ends of the diaphragm respectively. A second clamping component is provided in the middle of the diaphragm, and a loading device is provided on the upper end of the second clamping component.

[0008] Preferably, the movable structure includes an adjustable base plate, an adjustment groove is provided at the upper end of the adjustable base plate, two bolts are provided in the adjustment groove, two threaded holes are provided at the upper end of the base, each bolt 3 cooperates with one threaded hole 3, the upper end of the base is connected to the two adjustable base plates by bolts 3, and clamping rod seats are fixedly installed at the top of the opposite ends of the two adjustable base plates, and a set of clamping parts is installed at the upper end of each clamping rod seat.

[0009] Preferably, the upper end of the clamping rod seat has two symmetrically opened threaded holes, each threaded hole being threadedly connected to a bolt, and a set of clamping components is installed on the upper end of each clamping rod seat through the two threaded holes and the two bolts.

[0010] Preferably, the clamping member includes two clamping rods, which are located at the upper and lower ends of the diaphragm, respectively, and are connected by two bolts.

[0011] Preferably, the second clamping member includes two loading clamps, which are located at the middle of the upper and lower ends of the diaphragm, respectively. The front and rear ends of the loading clamp at the lower end are fixed to two fixing blocks, and the front and rear ends of the loading clamp at the upper end are fixed to the inner walls of the two ends of the fixing seat. The two sides of the lower end of the fixing seat correspond to the two fixing blocks.

[0012] Preferably, the two fixing blocks are provided with through holes, and the lower end of the fixing seat is provided with threaded holes on both sides. Each threaded hole corresponds to a through hole, and each threaded hole is matched with a bolt. The fixing seat and the two fixing blocks are connected by bolts passing through the through holes and engaging with the threads.

[0013] Preferably, the base has an extension opening at the middle of its upper end.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model uses a clamping component 1 connected to a clamping rod seat via bolt 2, and clamping component 2 connected to a fixed seat and a fixed block via bolt 1, thereby enabling bending fatigue testing of diaphragms of different thicknesses. It also makes the installation and disassembly of the fixture simpler and faster, allowing operators to complete the assembly and debugging of the fixture in a short time, thus improving work efficiency. At the same time, it also allows for easy disassembly and replacement when maintenance or replacement of parts is required, reducing maintenance costs and time.

[0016] 2. This utility model achieves flexible adjustment of the spacing between the clamping components through a movable structure. The adjustment groove on the adjustable base plate cooperates with the bolt three and the threaded hole three on the base, thereby allowing precise adjustment of the spacing between the two adjustable base plates according to the actual length of the diaphragm and the preset clamping point position of the test plan. This, in turn, changes the position of the two sets of clamping components, enabling the fixture to adapt to various diaphragm specifications, greatly improving the fixture's versatility and applicability, and reducing the trouble and cost of replacing the fixture due to diaphragm size mismatch. Attached Figure Description

[0017] Fig. 1 This is a schematic diagram of the structure of this utility model.

[0018] Fig. 2 This is a schematic diagram of the structure of clamping component one and clamping component two of this utility model.

[0019] Fig. 3 This is a schematic diagram of the structure of the second clamping component of this utility model.

[0020] Figure reference numerals: 1. Base; 2. Adjustable base plate; 3. Fixing block; 4. Fixing seat; 5. Clamping rod; 6. Diaphragm; 7. Clamping rod seat; 8. Loading clamping rod; 9. Bolt 1; 10. Loading device; 11. Bolt 2; 12. Bolt 3. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] In one embodiment, such as Figs. 1-3 As shown, an adjustable-spacing fixture for three-point bending fatigue testing of a diaphragm includes a base 1. Two movable structures are respectively installed on the left and right sides of the upper end of the base 1. Each movable structure is equipped with a set of clamping components 1. The two sets of clamping components 1 clamp and fix the left and right ends of the diaphragm 6 respectively. A clamping component 2 is provided in the middle of the diaphragm 6, and a loading device 10 is provided on the upper end of the clamping component 2.

[0023] In this embodiment, the diaphragm 6 to be tested is first selected according to the test requirements; then the diaphragm 6 is clamped by clamping member one and clamping member two, and then the loading device 10 applies a downward force to clamping member two. This force is transmitted to the middle of the diaphragm 6 through clamping member two, so that the diaphragm 6 is subjected to a three-point bending force, thereby testing the fatigue life and bending strength of the diaphragm 6.

[0024] In an optional embodiment, the movable structure includes an adjustable base plate 2, with an adjustment groove at the upper end of the adjustable base plate 2. Two bolts 12 are provided in the adjustment groove. Two threaded holes 3 are provided at the upper end of the base 1. Each bolt 32 cooperates with one threaded hole 3. The upper end of the base 1 is connected to the two adjustable base plates 2 by bolts 32. A clamping rod seat 7 is fixedly installed at the top of the opposite ends of the two adjustable base plates 2. A set of clamping parts 1 is installed at the upper end of each clamping rod seat 7.

[0025] It should be noted that the adjustment groove on the adjustable base plate 2 provides space for the movement of bolt 3 12. By rotating bolt 3 12, it moves within the threaded hole 3 and the adjustment groove, thereby causing the adjustable base plate 2 to slide along the base 1 in a specific direction. This design allows the operator to flexibly adjust the distance between the two adjustable base plates 2 according to the actual length of the diaphragm 6 and the preset clamping point positions in the test plan, thereby changing the position of the two sets of clamping components 1. This ensures effective clamping of the left and right ends of diaphragms 6 of different specifications, improving the versatility and adaptability of the fixture. The clamping rod seat 7 is fixed on the adjustable base plate 2, providing a stable mounting base for the clamping components 1.

[0026] In an optional embodiment, the upper end of the clamping rod seat 7 is symmetrically provided with two threaded holes, each of the threaded holes being threadedly connected to a bolt 11, and a set of clamping components is installed on the upper end of each clamping rod seat 7 through the two threaded holes and the two bolts 11.

[0027] It should be noted that the symmetrically arranged threaded holes two on the clamping rod seat 7, in conjunction with bolt two 11, form a reliable connection. By screwing bolt two 11 into the threaded holes two, clamping component one can be easily fixed to the clamping rod seat 7, and it is also convenient to disassemble and replace it when needed, providing convenience for the maintenance and adjustment of the clamp. Moreover, this symmetrical design ensures the stability of clamping component one during installation, enabling clamping component one to maintain balance under force and improving the clamping effect.

[0028] In an optional embodiment, the clamping member includes two clamping rods 5, which are located at the upper and lower ends of the diaphragm 6 respectively, and are connected by two bolts 11.

[0029] It should be noted that the two clamping rods 5 are located at the upper and lower ends of the diaphragm 6, respectively. Connected by bolt 2 11, they clamp and fix the diaphragm 6 at both ends. During testing, the diaphragm 6 will be subjected to various forces. This upper and lower clamping design effectively prevents the diaphragm 6 from sliding or loosening in the horizontal direction, ensuring that the diaphragm 6 remains in a stable clamped state, thereby guaranteeing the accuracy and reliability of the test data. Simultaneously, the connection method of bolt 2 11 allows the clamping force to be adjusted by rotating bolt 2 11. Operators can flexibly adjust the clamping force according to factors such as the material and thickness of the diaphragm 6, avoiding damage to the diaphragm 6 due to excessive clamping force or insecure clamping due to insufficient clamping force.

[0030] In an optional embodiment, the clamping member two includes two loading clamping rods 8, which are located at the middle of the upper and lower ends of the diaphragm 6, respectively. The front and rear ends of the loading clamping rod 8 at the lower end are fixed to two fixing blocks 3, and the front and rear ends of the loading clamping rod 8 at the upper end are fixed to the inner walls of the two ends of the fixing seat 4. The two sides of the lower end of the fixing seat 4 correspond to the two fixing blocks 3.

[0031] It should be noted that the two loading clamps 8 are located at the middle of the upper and lower ends of the diaphragm 6, forming the intermediate fulcrum in the three-point bending test. The lower loading clamp 8 is fixed to the fixing block 3, and the upper loading clamp 8 is fixed to the fixing seat 4. This structural design allows the clamping component two to provide stable support for the middle of the diaphragm 6. During the test, the force applied by the loading device 10 is transmitted to the middle of the diaphragm 6 through the upper loading clamp 8, causing the diaphragm 6 to bend and deform. The corresponding design of the fixing seat 4 and the fixing block 3 ensures the structural stability of the entire clamping component two, enabling it to withstand the large forces generated during the test and ensuring the smooth progress of the test.

[0032] In an optional embodiment, the two fixing blocks 3 are provided with through holes, and the lower ends of the fixing seat 4 are provided with threaded holes on both sides. Each threaded hole corresponds to a through hole, and each threaded hole is matched with a bolt 9. The fixing seat 4 and the two fixing blocks 3 are connected by the bolts 9 passing through the through holes and engaging with the threads.

[0033] It should be noted that the through hole on the fixing block 3 and the threaded hole on the fixing seat 4, when engaged with bolt 9, form a simple and reliable connection. By passing bolt 9 through the through hole and screwing it into the threaded hole, the fixing seat 4 and the fixing block 3 can be quickly and securely connected together. This connection method not only facilitates installation and disassembly but also ensures the stability of the connection between the fixing seat 4 and the fixing block 3 during testing, preventing changes in the position of the clamping component due to loosening and thus affecting the accuracy of the test results.

[0034] In an optional embodiment, the base 1 has an extension opening at the middle of its upper end.

[0035] It should be noted that when the diaphragm 6 is deformed by the three-point bending force, the extension opening provides sufficient space for the deformation of the diaphragm 6, avoiding unnecessary contact or collision between the diaphragm 6 and the base 1 due to the limitation of deformation, thereby ensuring the accuracy and reliability of the test results and being able to truly reflect the performance changes of the diaphragm 6 under the three-point bending fatigue.

[0036] The above embodiment discloses an adjustable-spacing fixture suitable for three-point bending fatigue testing of diaphragms. During the three-point bending fatigue test, firstly, according to the specifications of the diaphragm 6 and the test requirements, the position of the adjustable base plate 2 is adjusted by rotating bolt 3 12, thereby changing the spacing between the two sets of clamping parts to adapt to the length of the diaphragm 6. Then, the diaphragm 6 is placed in a suitable position, with its left and right ends positioned between the two clamping rods 5. The clamping force is adjusted by rotating bolt 2 11 to firmly clamp the left and right ends of the diaphragm 6. Next, the fixing seat 4 and the fixing block 3 are connected by bolt 1 9, so that the two loading rods 8 are located at the middle of the upper and lower ends of the diaphragm 6, forming a stable intermediate support point. Finally, the loading device 10 is activated, applying a downward force to the upper loading rod 8. This force is transmitted through the loading rod 8 to the middle of the diaphragm 6, subjecting the diaphragm 6 to a three-point bending force. During the test, sensors monitor parameters such as stress, strain, and deformation of the diaphragm 6 in real time. Based on this data, the fatigue life, bending strength, and other performance indicators of the diaphragm 6 are evaluated and analyzed. The extension opening 13 at the upper center of the base 1 provides ample space for the deformation of the diaphragm 6, preventing the diaphragm 6 from colliding with the base 1 due to restricted deformation, thus ensuring the accuracy of the test results.

[0037] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An adjustable-gap fixture suitable for three-point bending fatigue testing of diaphragms, characterized in that, Includes a base (1), on the left and right sides of the upper end of the base (1) are two movable structures respectively, and each movable structure is equipped with a set of clamping parts one at the upper end. The two sets of clamping parts one clamp and fix the left and right ends of the diaphragm (6) respectively. A clamping part two is provided in the middle of the diaphragm (6), and a loading device (10) is provided at the upper end of the clamping part two. The movable structure includes an adjustable base plate (2), an adjustment groove is provided at the upper end of the adjustable base plate (2), two bolts (12) are provided in the adjustment groove, two threaded holes are provided at the upper end of the base (1), each bolt (12) is engaged with one threaded hole, the upper end of the base (1) is connected to the two adjustable base plates (2) by bolts (12), and clamping rod seats (7) are fixedly installed at the top of the opposite ends of the two adjustable base plates (2). The upper end of the clamping rod seat (7) has two threaded holes symmetrically opened, each threaded hole 2 is threadedly connected to a bolt 2 (11), and a set of clamping parts 1 is installed on the upper end of each clamping rod seat (7) through the two threaded holes 2 and the two bolts 2 (11); The clamping component includes two clamping rods (5), which are located at the upper and lower ends of the diaphragm (6) respectively, and are connected by two bolts (11). The second clamping member includes two loading clamps (8). The two loading clamps (8) are located at the middle of the upper and lower ends of the diaphragm (6). The front and rear ends of the loading clamp (8) at the lower end are fixed to the two fixing blocks (3) respectively. The front and rear ends of the loading clamp (8) at the upper end are fixed to the inner walls of the two ends of the fixing seat (4). The two sides of the lower end of the fixing seat (4) correspond to the two fixing blocks (3) respectively.

2. The adjustable-gap fixture for three-point bending fatigue testing of diaphragms according to claim 1, characterized in that, The two fixing blocks (3) are provided with through holes, and the fixing seat (4) is provided with threaded holes on both sides of the lower end. Each threaded hole corresponds to a through hole, and each threaded hole is matched with a bolt (9). The fixing seat (4) and the two fixing blocks (3) are connected by the bolt (9) passing through the through hole and engaging with the thread.

3. The adjustable-gap fixture for three-point bending fatigue testing of diaphragms according to claim 1, characterized in that, An extension opening is provided at the middle of the upper end of the base (1).

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