Multi-mode adjustable universal testing machine clamp

Abstract

The utility model discloses a multi-mode adjustable universal testing machine clamp, which belongs to the field of universal testing machine clamps, and is characterized in that a fixed top seat, a fixed base and a movable table are oppositely arranged, and the distance between the movable table and the fixed top seat is adjusted through a driving device; connecting discs are arranged on the opposite faces of the fixed top base and the movable table, adjustable clamps are installed on the end faces of the connecting discs, connecting plates are installed on clamping heads of the adjustable clamps, connecting screw pipes are arranged at the inner ends of the connecting plates, replaceable clamping plates are connected to the connecting screw pipes through connecting bolts, and the clamping faces of the replaceable clamping plates are anti-skid faces. An object is clamped by the anti-slip surface and then detected by the testing machine. The replaceable clamping plate can adapt to various test samples, the application range of the testing machine is widened, the anti-skid design ensures the stability of the samples, and the test accuracy and safety are improved. The integrated bolt design simplifies installation and disassembly, shortens test preparation time, and is convenient to maintain. The clamping plate is perpendicular to the adjustable clamp, so that the clamping area is enlarged, and more samples are adapted.

Description

Technical Field

[0001] The utility model relates to the field of fixtures for universal testing machines, and particularly relates to a multi-mode adjustable fixture for a universal testing machine. Background Technique

[0002] The fixture of a universal testing machine is a core component in the testing of material mechanical properties, and its design and selection play a crucial role in the accuracy and reliability of test results. However, in practical applications, when facing large-sized or specimens with a relatively large lateral area, traditional fixtures may expose limitations. These fixtures often fail to provide sufficient contact area to firmly hold the specimen, thereby causing the specimen to slide during the test, seriously affecting the accuracy of test data.

[0003] In addition, the limitation of the clamping area may also result in insufficient clamping force of the fixture on the specimen. When subjected to tensile or torsional loads, the specimen may shift or fall off due to insufficient clamping force, which not only interrupts the test process but may also cause damage to the specimen or the fixture itself. More importantly, insufficient clamping force will cause the position of the specimen to be unstable during the test, thereby making the test data show a large discreteness and it is difficult to obtain stable and reliable test results.

[0004] From the perspective of efficiency, the problem of insufficient clamping force may also lead to repeated tests to obtain valid data. This not only increases the time and cost of the test but also reduces the overall efficiency of the test. More seriously, unstable clamping may also cause safety problems, such as the specimen suddenly flying out during the test, posing a potential threat to the safety of the operator. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a multi-mode adjustable fixture for a universal testing machine, which can effectively solve the problems raised in the background technique.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A multi-mode adjustable fixture for a universal testing machine, including a testing machine base, a testing machine mounting seat, a driving device, an adjusting screw rod, and a moving table. The testing machine mounting seat is installed on the testing machine base, the adjusting screw rod is installed on the testing machine mounting seat, the moving table is connected to two parallel adjusting screw rods and is adapted to them, and the driving device is located on the side wall of the testing machine mounting seat, and drives the moving table on the adjusting screw rod to move up and down;

[0008] A fixed base is provided at the center of the testing machine mounting seat, and stabilizing rods are connected to both sides of the upper end of the fixed base. Fixed top seats are installed at the rod heads of the two stabilizing rods. The fixed top seats are arranged opposite to the fixed base and the moving table, and the distance between the moving table and the fixed top seat is adjusted through the driving device;

[0009] Both the opposite surfaces of the fixed top seat and the moving table are provided with connection plates. An adjustable clamp is installed on the end face of the connection plate. A connection plate is installed on the chuck of the adjustable clamp, and a connection screw tube is provided at the inner end of the connection plate. A replaceable clamping plate is connected to the connection screw tube through a connection bolt. The clamping surface of the replaceable clamping plate is an anti-slip surface. The object is clamped through the anti-slip surface and then detected by a testing machine.

[0010] As a further optional solution of the present application, the cross-section of the testing machine mounting seat is designed in an oval shape. The two distance adjusting screw rods are connected to the testing machine mounting seat. The distance adjusting screw rods are connected to the testing machine mounting seat through bearing devices, and the lower ends of the distance adjusting screw rods extend into the inner cavity of the testing machine mounting seat;

[0011] As a further optional solution of the present application, the moving table, the fixed base and the fixed top seat are all designed in an oval shape. The lower cylinder of the fixed base is inserted into the testing machine mounting seat, and the fixed base is fixedly connected to the testing machine mounting seat;

[0012] As a further optional solution of the present application, through holes adapted to the stabilizing rods are provided on the fixed top seat and the fixed base, and the fixed top seat and the fixed base are fixed on the stabilizing rods through nuts;

[0013] As a further optional solution of the present application, the connection plate is located at the end of the adjustable clamp. A round hole is provided on the end face of the connection plate. The connection plate is connected to the fixed top seat or the moving table through bolts;

[0014] As a further optional solution of the present application, the connection bolt and the replaceable clamping plate are integrally designed. The connection bolt is inserted into the connection screw tube and connected to it. The replaceable clamping plate is perpendicular to the adjustable clamp, expanding the clamping area of the laterally clamped object.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] In the present utility model, the design of the replaceable clamping plate enables the clamp to adapt to test samples of different sizes and shapes, increasing the applicable range of the testing machine. The anti-slip design of the replaceable clamping plate ensures that the test sample will not slip or move during the test, improving the accuracy and safety of the test.

[0017] The integral design of the connection bolt and the replaceable clamping plate makes the installation and disassembly of the clamping plate more convenient and fast, saving the test preparation time. The design of the replaceable clamping plate makes the maintenance and servicing more convenient, reducing the maintenance cost and time

[0018] The design of the replaceable splint perpendicular to the adjustable fixture expands the clamping area of the lateral clamp, enabling the fixture to clamp more types of test samples. The design of components such as the fixed base, stabilizing rod, and fixed top seat enhances the overall structural stability, ensuring the stability and reliability of the testing machine during operation.

[0019] By using the driving device and the distance-adjusting screw in cooperation, the position of the moving table can be precisely controlled, making the fixture adjustment more flexible and improving the operation experience. The oval design of the testing machine mounting seat, moving table, fixed base, and fixed top seat is not only beautiful and generous but also coordinated with the overall structure, enhancing the overall appearance of the testing machine. Brief Description of the Drawings

[0020] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 Front view of the overall structure of the present utility model;

[0022] Figure 3 Exhibition view of the fixed top seat and adjustable fixture of the present utility model;

[0023] Figure 4 Exploded view of the adjustable fixture and replaceable splint of the present utility model;

[0024] Figure 5 is Figure 4 Enlarged schematic view at A in

[0025] In the figure: 1, testing machine base; 2, testing machine mounting seat; 3, driving device; 4, distance-adjusting screw; 5, moving table; 6, fixed base; 7, stabilizing rod; 8, fixed top seat; 9, perforation; 10, connecting plate; 11, adjustable fixture; 12, connecting plate; 13, connecting screw tube; 14, replaceable splint; 15, connecting bolt. Detailed Embodiment

[0026] To make the technical means, creative features, achieved purposes, and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] As Figure 1 - Figure 5 shown, a multi-mode adjustable universal testing machine fixture consists of multiple key components, including a testing machine base 1, a testing machine mounting seat 2, a driving device 3, a distance-adjusting screw 4, a moving table 5, a fixed base 6, a stabilizing rod 7, a fixed top seat 8, a connecting plate 10, an adjustable fixture 11, a connecting plate 12, a connecting screw tube 13, a connecting bolt 15, and a replaceable splint 14.

[0028] The test machine mounting base 2 is firmly installed on the test machine base 1, providing a stable foundation for the operations thereon. The distance-adjusting screw rods 4 are ingeniously installed on the test machine mounting base 2, and these two parallel screw rods play an important role in adjusting the distance. The moving table 5 is connected to the distance-adjusting screw rods 4 in a matching manner, enabling its position to be adjusted as required. The driving device 3 is installed on the side wall of the test machine mounting base 2, and it drives the distance-adjusting screw rods 4 to move the moving table 5 in the vertical direction, thereby achieving precise control of the position of the fixture.

[0029] At the central position of the test machine mounting base 2, we designed a fixed base 6, which connects the upper and lower parts like a bridge. The two sides of the upper end of the fixed base 6 are closely connected to the fixed top base 8 through the stabilizing rods 7. These two stabilizing rods 7 not only enhance the stability of the overall structure but also provide reliable support for the fixed top base 8. The fixed top base 8, the fixed base 6, and the moving table 5 are arranged opposite to each other. Through the adjustment of the driving device 3, the distance between the moving table 5 and the fixed top base 8 can be easily adjusted to accommodate test samples of different sizes and shapes.

[0030] On the opposite surfaces of the fixed top base 8 and the moving table 5, we installed connecting plates 10. Adjustable fixtures 11 are installed on the end faces of these connecting plates 10, and they can be flexibly adjusted according to the specific requirements of the test sample. Connecting plates 12 are installed on the chucks of the adjustable fixtures 11, and connecting screw tubes 13 are provided at the inner ends of the connecting plates 12. Through these connecting screw tubes 13, we can use connecting bolts 15 to firmly install the replaceable clamping plates 14 on the fixtures. The clamping surfaces of these replaceable clamping plates 14 are designed with anti-slip features to ensure that the sample will not slip or move during the test.

[0031] The cross-section of the test machine mounting base 2 adopts an oval design. This design is not only beautiful and generous but also helps to improve the stability and load-bearing capacity of the structure. The distance-adjusting screw rods 4 are connected to the test machine mounting base 2 through bearing devices, ensuring the smoothness and stability of the screw rods during rotation. At the same time, the lower ends of the distance-adjusting screw rods 4 also extend into the inner cavity of the test machine mounting base 2, providing a more solid support for the entire structure.

[0032] In addition, the moving table 5, the fixed base 6, and the fixed top base 8 also adopt an oval design. This design not only echoes the test machine mounting base 2 but also enhances the overall aesthetics and coordination. The lower-end cylinder of the fixed base 6 is inserted into the test machine mounting base 2 and is closely connected to it through a fixed connection method, ensuring the stability of the entire structure. The perforations 9 provided on the fixed top base 8 and the fixed base 6 are perfectly adapted to the stabilizing rods 7, making the entire structure more stable and reliable in the vertical direction.

[0033] The connecting plate 10 is located at the end of the adjustable fixture 11 and is connected to the fixed top seat 8 or the moving table 5 by bolts. This connection method is not only simple and convenient but also ensures the stability and reliability of the connecting plate 10 during the test. At the same time, the circular holes opened on the end face of the connecting plate 10 also facilitate the installation of the bolts.

[0034] The connecting bolt 15 and the replaceable clamping plate 14 are integrally designed, which makes the installation and disassembly of the replaceable clamping plate 14 more convenient and fast. The connecting bolt 15 is inserted into the connecting screw tube 13 and tightly connected to it, thus ensuring the stability and reliability of the replaceable clamping plate 14 during the test. At the same time, the design that the replaceable clamping plate 14 is perpendicular to the adjustable fixture 11 also expands the clamping area of the lateral clamping object, enabling the fixture to clamp more types of test samples.

[0035] Usage process of the universal testing machine fixture: Steadily install the testing machine mounting seat 2 on the testing machine base 1 to ensure firm installation. Check whether the distance-adjusting screw 4 is correctly installed on the testing machine mounting seat 2 and confirm its parallelism.

[0036] Start using the driving device 3. By driving the rotation of the distance-adjusting screw 4, move the moving table 5 vertically to the required position. According to the size and shape of the test sample, precisely adjust the distance between the moving table 5 and the fixed top seat 8.

[0037] Install the adjustable fixture 11 on the connecting plate 10 and fasten it with bolts. Install the connecting plate 12 on the chuck of the adjustable fixture 11 and ensure a firm connection.

[0038] Insert the connecting bolt 15 into the connecting screw tube 13 and rotate it tightly to install the replaceable clamping plate 14 on the fixture. Check whether the clamping surface of the replaceable clamping plate 14 is anti-slip to ensure that the sample will not slip or move during the test. Place the test sample between the fixtures of the moving table 5 or the fixed top seat 8, adjust the adjustable fixture 11 and the replaceable clamping plate 14 to clamp the sample tightly. Start the testing machine and conduct the test according to the preset test parameters. Observe and record the data and phenomena during the test.

[0039] During replacement: Loosen the connecting bolt 15 and remove the replaceable splint 14 from the fixture. Take care not to damage the connecting screw tube 13 and the connecting plate 12. Select a suitable replaceable splint 14 according to the test requirements. Check whether the clamping surface of the new splint is anti-slip to ensure compliance with the test requirements. Align the new replaceable splint 14 with the connecting screw tube 13 and insert the connecting bolt 15. Rotate and tighten the connecting bolt 15 to ensure that the new splint is firmly installed. Adjust the position and angle of the adjustable fixture 11 as needed to ensure that the new splint can correctly clamp the sample. Check whether the installation of the fixture and the replaceable splint 14 is stable without looseness. Conduct a simple test to ensure that the fixture can normally clamp the sample and conduct the test. Place the test sample and adjust the fixture to the appropriate position. Start the testing machine and conduct the test according to the preset parameters.

[0040] All standard parts used in the present utility model can be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. In addition, the electrofusion connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0041] The above is only the preferred specific implementation mode of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent replacements or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A multi-mode adjustable universal testing machine fixture, comprising a testing machine base (1), a testing machine mounting seat (2), a driving device (3), a distance-adjusting screw (4) and a moving table (5). The testing machine mounting seat (2) is installed on the testing machine base (1), the distance-adjusting screw (4) is installed on the testing machine mounting seat (2), the moving table (5) is connected to two parallel distance-adjusting screws (4) and is adapted thereto. The driving device (3) is located on the side wall of the testing machine mounting seat (2), and drives the moving table (5) on the distance-adjusting screw (4) to move up and down. It is characterized in that: A fixed base (6) is provided at the center of the test machine mounting base (2), and stabilizing rods (7) are connected to both sides of the upper end of the fixed base (6). Fixed top seats (8) are installed at the rod ends of the two stabilizing rods (7). The fixed top seats (8) are arranged opposite to the fixed base (6) and the moving table (5). The distance between the moving table (5) and the fixed top seats (8) is adjusted by a driving device (3). Connecting discs (10) are provided on the opposite surfaces of the fixed top seats (8) and the moving table (5). Adjustable clamps (11) are installed on the end faces of the connecting discs (10). Connecting plates (12) are installed on the chucks of the adjustable clamps (11). A connecting screw tube (13) is provided at the inner end of the connecting plate (12). A replaceable clamping plate (14) is connected to the connecting screw tube (13) through a connecting bolt (15). The clamping surface of the replaceable clamping plate (14) is an anti-slip surface. An object is clamped through the anti-slip surface and then detected by the test machine.

2. The multi-mode adjustable universal testing machine fixture according to claim 1, characterized in that: The cross-section of the test machine mounting base (2) is designed to be oval. Two distance-adjusting screw rods (4) are connected to the test machine mounting base (2). The distance-adjusting screw rods (4) are connected to the test machine mounting base (2) through bearing devices. The lower ends of the distance-adjusting screw rods (4) extend into the inner cavity of the test machine mounting base (2).

3. The multi-mode adjustable universal testing machine fixture according to claim 2, wherein: The moving table (5), the fixed base (6), and the fixed top seats (8) are all designed to be oval. The lower cylinder of the fixed base (6) is inserted into the test machine mounting base (2), and the fixed base (6) is fixedly connected to the test machine mounting base (2).

4. The multi-mode adjustable universal testing machine fixture according to claim 3, characterized in that: Perforations (9) adapted to the stabilizing rods (7) are formed in the fixed top seats (8) and the fixed base (6). The fixed top seats (8) and the fixed base (6) are fixed to the stabilizing rods (7) by nuts.

5. A multi-mode adjustable universal testing machine fixture according to claim 4, characterized in that: The connecting disc (10) is located at the end of the adjustable clamp (11). Round holes are formed in the end face of the connecting disc (10). The connecting disc (10) is connected to the fixed top seat (8) or the moving table (5) through bolts.

6. The multi-mode adjustable universal testing machine fixture according to claim 5, characterized in that: The connecting bolt (15) is integrally designed with the replaceable clamping plate (14). The connecting bolt (15) is inserted into and connected to the connecting screw tube (13). The replaceable clamping plate (14) is perpendicular to the adjustable clamp (11) to expand the clamping area of the horizontally clamped object.

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