Vibration test clamp

Abstract

The utility model discloses a vibration test clamp, which comprises a bottom plate, a fixed seat is arranged above the bottom plate, the inside of the fixed seat is of a hollow structure, a counter-drawing screw rod is rotatably mounted in the fixed seat, a sliding chute is arranged on the upper wall of the fixed seat, a pair of sliding blocks screwed with the counter-drawing screw rod is arranged in the sliding chute, a main clamping plate is arranged on the upper walls of the sliding blocks, and the main clamping plate is connected with the counter-drawing screw rod. A long stud is fixedly arranged on the top of the main clamping plate, a support is arranged on the outer wall of the main clamping plate, the upper wall of the support is connected with a pressing plate through a telescopic rod, a pressing block is arranged on the lower wall of the pressing plate, a first nut is connected to the long stud in a screwed mode, and an auxiliary clamping assembly is arranged on the main clamping plate. The vibration test clamp provides a reliable and efficient sample fixing solution for various vibration tests by virtue of height adjustability, stability, convenience in operation and adaptive design, and is suitable for the fields of wide scientific research, industrial detection, quality control and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to vibration test technical field, concretely is a vibration test fixture. BACKGROUND

[0002] In the product development and quality control process, vibration test is an important link of evaluating product durability, reliability and structural integrity. This test simulates various vibration environments that the product may encounter in the process of transportation and use, such as road bumps, machine running vibration, etc. In order to ensure the accuracy and repeatability of test results, it is necessary to use a vibration test fixture to firmly fix the test sample.

[0003] Chinese patent CN215374418U discloses a clamp for instrument panel vibration test, comprising a storage box, a telescopic rod, a concave block, an electric push rod, a clamping plate and a limiting mechanism, the top of the storage box is an open structure, the midpoint of the inner wall bottom of the storage box is fixedly connected with the telescopic rod, the top of the telescopic rod is fixedly connected with the concave block, the left and right sides of the concave block are fixedly connected with the electric push rod, and the end of the electric push rod close to the concave block penetrates through the concave block and extends to the outside of the concave block and is fixedly connected with the clamping plate.

[0004] The device can control a pair of electric push rods to make a pair of clamping plates move relatively, and then clamp and fix the measured object. However, the device can only clamp the workpiece in the left-right direction, and there is not enough fixing force in the front-rear and longitudinal directions during continuous vibration, which can easily cause the workpiece to slide out of position between the pair of clamping plates, thereby affecting the test effect. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a vibration test fixture, which solves the problems of poor adjustability and insufficient stability of the existing fixture.

[0006] To achieve the above purpose, the utility model realizes the following technical scheme: a vibration test fixture, comprising a bottom plate, a fixed seat is arranged above the bottom plate, the fixed seat is a hollow structure and a pair of tensioning rods are rotatably installed inside, a sliding groove is arranged on the upper wall of the fixed seat, a pair of sliding blocks are arranged in the sliding groove and are rotatably connected with the pair of tensioning rods, a main clamping plate is arranged on the upper wall of the sliding block, a long stud is fixedly arranged on the top of the main clamping plate, a support is arranged on the outer wall of the main clamping plate, the support is connected with a pressing plate through a telescopic rod, a through hole is formed in the pressing plate and the long stud passes through the through hole, a pressing block is arranged on the lower wall of the pressing plate, a first nut is rotatably connected with the long stud, and an auxiliary clamping assembly is arranged on the main clamping plate.

[0007] Preferably, the auxiliary clamping assembly comprises a transverse groove arranged on the main clamping plate, a pair of auxiliary clamping plates are slidably arranged on the clamping surface of the main clamping plate, a short stud penetrating through the transverse groove is arranged at one end of the auxiliary clamping plate, and a second nut is screwed on the short stud.

[0008] Preferably, a pair of guide grooves are arranged on the side wall of the main clamping plate, and a guide block slidably connected with the guide grooves is arranged at one end of the auxiliary clamping plate.

[0009] Preferably, mounting holes are arranged at four corners of the bottom plate.

[0010] Preferably, the pair of wire drawing rods are arranged at one end of the fixed seat and are provided with hand wheels.

[0011] Preferably, the first nut and the second nut are butterfly nuts.

[0012] Beneficial effects

[0013] The utility model provides a kind of vibration test fixture, with the following beneficial effects:

[0014] By the rotation installation wire drawing rod in the fixed seat of center hollow structure, in combination with the design of sliding block and wire drawing rod in sliding groove, the stable clamping of sample left and right sides is realized, first nut cooperates long stud and pressing plate, pressing block can be vertically fixed to sample, the setting of auxiliary clamping assembly, including the auxiliary clamping plate in transverse groove, so that the fixture can not only adapt to different sizes, shape sample, also provide additional support point, and sample is clamped in front and back direction, the configuration of short stud and second nut ensures the stability and adjustment flexibility of auxiliary clamping plate, the cooperation of guide groove and guide block makes the sliding of auxiliary clamping plate more smooth, improve the accuracy and efficiency of operation, the vibration test fixture provides reliable and efficient sample fixing solution for various vibration tests by its height adjustability, stability, convenient operation and adaptability design, is applicable to the field of extensive scientific research, industrial detection and quality control etc. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is the structure schematic diagram of the utility model.

[0016] Fig. 2 It is the overhead structure schematic diagram of the utility model.

[0017] In the drawing: 1, bottom plate; 2, fixed seat; 3, pair of wire drawing rods; 4, sliding groove; 5, sliding block; 6, main clamping plate; 7, long stud; 8, support; 9, telescopic rod; 10, pressing plate; 11, pressing block; 12, first nut; 13, transverse groove; 14, auxiliary clamping plate; 15, short stud; 16, second nut; 17, guide groove; 18, guide block; 19, mounting hole; 20, hand wheel. DETAILED DESCRIPTION

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figs. 1-2 This utility model provides a technical solution: a vibration test fixture, including a base plate 1, a fixed seat 2 above the base plate 1, the fixed seat 2 having a hollow structure and a pull rod 3 rotatably mounted inside, a sliding groove 4 on the upper wall of the fixed seat 2, a pair of sliders 5 screwed to the pull rod 3 in the sliding groove 4, a main clamping plate 6 on the upper wall of the sliders 5, a long stud 7 fixedly mounted on the top of the main clamping plate 6, a support 8 on the outer wall of the main clamping plate 6, the upper wall of the support 8 being connected to a pressure plate 10 via a telescopic rod 9, a through hole for the long stud 7 to pass through on the pressure plate 10, a pressure block 11 on the lower wall of the pressure plate 10, a first nut 12 screwed onto the long stud 7, and an auxiliary clamping assembly on the main clamping plate 6.

[0020] By adopting the above technical solution, the rotation of the wire rod 3 can be used to apply a clamping force to the sample in the left and right directions. The upper wall of the fixed seat 2 is provided with a sliding groove 4, and a pair of sliders 5 are slidably engaged in the sliding groove 4. The sliders 5 are linked with the wire rod 3 to ensure precise relative movement. The support 8 on the outer wall of the main clamping plate 6 is connected to the pressure plate 10 through the telescopic rod 9. The pressure plate 10 is provided with a pressure block 11 to form a stable clamping mechanism. With the first nut 12, the sample can be clamped and fixed longitudinally.

[0021] In this embodiment, the auxiliary clamping assembly includes a transverse groove 13 on the main clamping plate 6, and a pair of auxiliary clamping plates 14 are slidably disposed on the clamping surface of the main clamping plate 6. A short stud 15 penetrating the transverse groove 13 is installed at one end of the auxiliary clamping plate 14, and a second nut 16 is screwed onto the short stud 15.

[0022] By adopting the above technical solution, and by setting up secondary clamping plates 14 at the front and rear, along with short studs 15 and second nuts 16, the adaptability to the edge or irregular shape of the sample can be enhanced, and the sample can be clamped and fixed in the front and rear directions.

[0023] In this embodiment, the main clamping plate 6 is provided with a pair of guide grooves 17 on its side wall, and a guide block 18 that is slidably connected to the guide grooves 17 is installed at one end of the auxiliary clamping plate 14.

[0024] By adopting the above technical solution, the guide groove 17 and guide block 18 make the secondary clamping plate 14 move more smoothly and accurately in the lateral direction, avoiding possible offset or shaking during the adjustment process, and further improving the operation convenience and clamping accuracy of the fixture.

[0025] In this embodiment, the base plate 1 is further configured such that mounting holes 19 are provided at each of the four corners.

[0026] By adopting the above technical solution, mounting holes 19 are provided at all four corners of the base plate 1. Users can use the mounting holes 19 to securely fix the fixture in the designated position according to the specific layout of the test bench or vibration table, ensuring the stability and safety of the fixture during vibration testing.

[0027] In this embodiment, one end of the pull rod 3 passes through the fixed seat 2 and is equipped with a handwheel 20.

[0028] In this embodiment, both the first nut 12 and the second nut 16 are wing nuts.

[0029] By adopting the above technical solution, both the first nut 12 and the second nut 16 adopt a wing nut design, which makes it convenient for workers to tighten by hand.

[0030] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0031] Example: First, place the vibration test fixture on a vibration table or other test platform and fix it to the platform through the mounting holes 19 at the four corners of the base plate 1, ensuring that the fixture remains stable throughout the test. Based on the sample size and shape, place the sample between the main clamping plate 6 and the auxiliary clamping plate 14. By rotating the handwheel 20, the pull rod 3 rotates, causing a pair of sliders 5 to move relative to each other along the slide groove 4. The sliders 5 are connected to the main clamping plate 6, so the relative movement of the sliders 5 will cause the main clamping plate 6 to clamp and fix the workpiece left and right. Then, the auxiliary clamping components on the main clamping plate 6 are used to position and clamp the sample in the front-back direction. Tighten and loosen the second nut 16. At this time, the auxiliary clamping plate 14 can move laterally along the side wall of the main clamping plate 6 through the sliding connection of the guide groove 17 and the guide block 18 to adapt to samples of different widths, so that the auxiliary clamping plate 14 is pressed against the front and rear side walls of the sample. Then tighten the second nut 16 to fix the auxiliary clamping plate 14. Then rotate the first nut 12 to make it descend along the long stud 7 and push the pressure plate 10 and the pressure block 11 to press the sample onto the fixed seat 2, thus fixing the sample. After completing the above steps, the sample is firmly fixed in the fixture, which can withstand tension and compression in the vertical direction and remain stable in the horizontal direction. At this time, the vibration test can begin. The design of the fixture can effectively transmit vibration while keeping the sample position unchanged, ensuring the accuracy and repeatability of the test results.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vibration testing fixture, comprising a base plate (1), characterized in that, A fixed seat (2) is provided above the base plate (1). The fixed seat (2) has a hollow structure and a pull rod (3) is rotatably installed inside. A sliding groove (4) is provided on the upper wall of the fixed seat (2). A pair of sliders (5) are provided in the sliding groove (4) and are screwed to the pull rod (3). A main clamping plate (6) is provided on the upper wall of the slider (5). A long stud (7) is fixedly provided on the top of the main clamping plate (6). A support (8) is provided on the outer wall of the main clamping plate (6). The upper wall of the support (8) is connected to the pressure plate (10) through a telescopic rod (9). A through hole is provided on the pressure plate (10) for the long stud (7) to pass through. A pressure block (11) is provided on the lower wall of the pressure plate (10). A first nut (12) is screwed on the long stud (7). An auxiliary clamping assembly is provided on the main clamping plate (6).

2. The vibration testing fixture according to claim 1, characterized in that, The auxiliary clamping assembly includes a transverse groove (13) on the main clamping plate (6), and a pair of auxiliary clamping plates (14) are slidably provided on the clamping surface of the main clamping plate (6). A short stud (15) penetrating the transverse groove (13) is installed at one end of the auxiliary clamping plate (14), and a second nut (16) is screwed onto the short stud (15).

3. A vibration testing fixture according to claim 2, characterized in that, The main clamping plate (6) has a pair of guide grooves (17) on its side wall, and the auxiliary clamping plate (14) has a guide block (18) that is slidably connected to the guide grooves (17) installed at one end.

4. A vibration testing fixture according to claim 1, characterized in that, The base plate (1) has mounting holes (19) at all four corners.

5. A vibration testing fixture according to claim 1, characterized in that, One end of the pull rod (3) passes through the fixed seat (2) and is equipped with a handwheel (20).

6. A vibration testing fixture according to claim 1, characterized in that, Both the first nut (12) and the second nut (16) are wing nuts.

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