Adjustable table board vibration test clamp
By designing an adjustable table plate vibration test fixture, using columns, beams and sliding connection structures, the problems of complex and high cost of fixture design in the existing technology are solved, and the vibration test requirements and data accuracy of multiple models are achieved. .
Patent Information
- Application Number
- CN202421211805.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-30
AI Technical Summary
In the prior art, the fixtures used for vibration tests are complex and costly, and it is difficult to uniformly adapt to the vibration test needs of different models of products, resulting in increased test costs and data errors.
An adjustable table plate vibration test fixture is designed, using columns, beams and sliding connection structures. The adjustment of the fixture is achieved through the combination of screws and nuts, which can adapt to the installation and vibration tests of different models of products.
It has achieved the satisfaction of vibration test requirements for various models of products, reduced test costs, improved the accuracy of data acquisition and the quality of vibration tests, and simplified the replacement and use of fixtures.
Smart Images
Figure CN222318379U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vibration testing, and specifically relates to an adjustable tabletop vibration testing fixture. Background Art
[0002] Vibration is a form of reciprocating motion of an object around an equilibrium position (or average position, etc.). Equipment, fasteners and other products installed on rail transportation vehicles such as high-speed railways and trains will inevitably cause vibration excitation during the movement of the train. Therefore, it is necessary to conduct vibration tests on a large number of equipment, fasteners, etc. on rail transportation vehicles to assess the structural strength of the equipment, fasteners, etc., that is, to simulate whether fatigue failure or damage will occur due to the actual vibration environment.
[0003] In order to simulate the actual vibration environment of the product in the laboratory, technicians usually design corresponding fixtures to complete the test, fix the test product on the vibration test bench through the fixture, and start the vibration test bench to simulate the actual vibration environment that the product is subjected to.
[0004] However, in the prior art, there is a huge demand for fixtures for clamping test products. Different fixtures need to be designed according to the shape, size, strength, etc. of different test products. Therefore, when conducting vibration tests on products, it is often necessary to design multiple fixtures in order to implement vibration tests on different batches and models of test products. This requires a lot of manpower, material resources, financial resources and time, resulting in a significant increase in the cost of vibration testing.
[0005] In addition, multiple test fixtures may have different manufacturing quality processes, which may increase the error of the vibration data finally obtained, causing many problems for subsequent research and development.
[0006] Therefore, there is an urgent need to develop and design a fixture that can effectively connect and fix different models of a product, so that the fixture can meet the clamping requirements of different models of vibration tests of a product, thereby saving expensive test costs and improving the quality of vibration tests. Utility Model Content
[0007] The utility model aims to provide an adjustable table vibration test fixture to solve the problems raised in the above background technology.
[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable table vibration test fixture, comprising two columns, the number of which is 2 and which are vertically symmetrically arranged, the rear side walls of the two columns are fixedly connected to a base, cross beams are symmetrically arranged at both ends of the two columns, screws are sleeved on both sides of the two cross beams, and the screws pass through both sides of the columns, nuts are threadedly connected on both sides of the screws, and the inner cavities of the columns and the cross beams are both installed with sliding connection structures.
[0009] Preferably, the sliding connection structure includes a circular hole plate, and there are four circular hole plates, the rear side walls of the circular hole plates are respectively fitted to the outer side walls of the column and the beam, the rear side walls of the circular hole plates are fixedly connected with studs, the side walls of the studs respectively penetrate the inner cavities of the columns and the beams, the outer walls of the studs are sleeved with a sleeve plate, the ends of the studs are threadedly connected with thread blocks, the front side walls of the thread blocks are fitted with the rear side walls of the sleeve plate, the front side walls of the sleeve plate are symmetrically fixedly connected with a frame, the inner cavity of the frame is equipped with rollers, and the side walls of the rollers are respectively fitted to the rear side walls of the column and the beam.
[0010] Preferably, an oblique beam is fixedly connected to the upper surface of the base, and the other end of the oblique beam is fixedly connected to the side wall of the column.
[0011] Preferably, circular holes are evenly formed on the surface of the base.
[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the connection between the table top and the base of the vibration table is installed by multiple bolts matching the table top mounting holes of the vibration table. When the test in one direction is completed, the vibration response data of each different position of the test piece can be obtained. In addition, for the present invention, it is only necessary to remove the bolts connected to the table top of the vibration test table, and then rotate the direction of the fixture and tighten the bolts as described above to complete the direction change task. It is simple and efficient. Since the fixture connecting parts are adjustable, various products can be installed and tested by replacing different product samples, so that the vibration response of various positions of various test pieces can be obtained efficiently and accurately in cooperation with the vibration test table, thereby greatly saving costs and improving work efficiency and data acquisition accuracy. The vibration force transmission of the provided vibration fixture is reasonable, the fixture strength is reliable, and the quality of the vibration test is improved. It can effectively solve the problems of high test cost, time consumption, and difficulty in unifying fixtures in existing vibration tests. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of the utility model;
[0014] Figure 2 for Figure 1 Structural details of the sliding connection structure;
[0015] In the figure: 1. column; 2. cross beam; 3. screw; 4. nut; 5. sliding connection structure; 51. round hole plate; 52. stud; 53. sleeve plate; 54. threaded block; 55. frame; 56. roller; 6. base; 7. inclined beam. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] See also Figure 1-2 The utility model provides an adjustable table vibration test fixture, including a column 1, wherein the number of the columns 1 is two and they are vertically symmetrically arranged, the rear side walls of the two columns 1 are fixedly connected with a base 6, the two ends of the two columns 1 are symmetrically provided with beams 2, the two sides of the two beams 2 are sleeved with screws 3, and the screws 3 pass through the two sides of the columns 1, the two sides of the screws 3 are threadedly connected with nuts 4, and the inner cavities of the columns 1 and the beams 2 are both installed with sliding connection structures 5.
[0018] The beams 2 are symmetrically arranged on both sides of the column 1. At the same time, the column 1 and the beam 2 are provided with round holes to fit together. The screws 3 are passed through and the nuts 4 are used to tighten the two sides. The column 1 and the beam 2 form a complete square frame. The sliding connection structure 5 is evenly distributed in the inner cavity of the column 1 and the beam 2. The sliding connection structure 5 is combined with the column 1 and the beam 2 to form a complete fixture. One side of the column 1 is connected to the base 6. The column 1, the beam 2 and the base 6 are welded with 100mm×100mm square steel, which can not only ensure the transmission of the exciting force, but also reduce the weight of the fixture as much as possible. When in use, the base 6 is first fitted with the surface of the vibration table. The surface of the base 6 is provided with round holes, and bolts matching the mounting holes of the table top of the vibration table are used for installation. When conducting a vibration test, the test product is connected to the sliding connection structure 5. The sliding connection structure 5 and the test product are replaceable and detachable structures with a replaceable design. The purpose is to replace the test product when conducting test pieces of different specifications and models among similar products. The sliding connection structure 5 set on one side has a sliding function. It changes its position by sliding, which is convenient for connecting with product samples of different specifications. The main body of the sliding connection structure 5 does not need to be replaced, which saves costs, is efficient, and improves the uniformity of the test quality. The vibration tables used are all direct-coupled electric vibration tables. When the test in one direction is completed, the vibration response data of the test piece at different positions can be obtained. It is mainly used for vibration tests of high-speed rail table tops on rail transit equipment.
[0019] The sliding connection structure 5 includes a circular hole plate 51, and the number of the circular hole plates 51 is four. The rear side walls of the circular hole plate 51 are respectively attached to the outer side walls of the column 1 and the beam 2. The rear side walls of the circular hole plate 51 are fixedly connected with studs 52. The side walls of the studs 52 respectively penetrate the inner cavities of the column 1 and the beam 2. The outer walls of the studs 52 are sleeved with a sleeve plate 53. The ends of the studs 52 are threadedly connected with thread blocks 54. The front side walls of the thread blocks 54 are attached to the rear side walls of the sleeve plate 53. The front side walls of the sleeve plate 53 are symmetrically fixedly connected with a frame 55. The inner cavity of the frame 55 is installed with rollers 56. The side walls of the rollers 56 The circular hole plate 51 is respectively fitted to the rear side walls of the column 1 and the beam 2, and is inserted into the inner cavity of the column 1 and the beam 2 through the stud 52. The other side is connected with the sleeve 53, and then fastened by the threaded block 54. During the fastening process, the sleeve 53 will fit with the column 1 and the beam 2, so that the position of the frame 55 is changed, and it fits with the column 1 and the beam 2 through the roller 56, so that the circular hole plate 51 slides more smoothly. At the same time, the surface of the circular hole plate 51 is provided with circular holes, which can be penetrated by matching bolts, so as to fix the four corners of the test product. Through the sliding function, the position of a single circular hole plate 51 can be changed to adapt to test products of different specifications.
[0020] An oblique beam 7 is fixedly connected to the upper surface of the base 6 , and the other end of the oblique beam 7 is fixedly connected to the side wall of the column 1 . The column 1 is supported by the cross beam 7 to make the column 1 more stable.
[0021] The surface of the base 6 is evenly provided with round holes.
[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An adjustable table vibration test fixture, characterized in that: The invention comprises two columns (1), wherein the number of the columns (1) is two and the columns (1) are arranged symmetrically in a vertical direction, the rear side walls of the two columns (1) are fixedly connected to a base (6), the two ends of the two columns (1) are symmetrically provided with cross beams (2), the two sides of the two cross beams (2) are sleeved with screw rods (3), and the screw rods (3) pass through the two sides of the columns (1), the two sides of the screw rods (3) are threadedly connected with nuts (4), and the inner cavities of the columns (1) and the cross beams (2) are both installed with sliding connection structures (5).
2. The adjustable table vibration test fixture according to claim 1, characterized in that: The sliding connection structure (5) comprises a circular hole plate (51), and the number of the circular hole plates (51) is four. The rear side walls of the circular hole plates (51) are respectively fitted to the outer side walls of the column (1) and the beam (2). The rear side walls of the circular hole plates (51) are fixedly connected with studs (52). The side walls of the studs (52) respectively penetrate the inner cavities of the column (1) and the beam (2). The outer walls of the studs (52) are sleeved with a sleeve plate (53). The ends of the studs (52) are threadedly connected with a thread block (54). The front side wall of the thread block (54) is fitted with the rear side wall of the sleeve plate (53). The front side wall of the sleeve plate (53) is symmetrically fixedly connected with a frame (55). The inner cavity of the frame (55) is installed with rollers (56). The side walls of the rollers (56) are respectively fitted to the rear side walls of the column (1) and the beam (2).
3. The adjustable table vibration test fixture according to claim 1, characterized in that: An inclined beam (7) is fixedly connected to the upper surface of the base (6), and the other end of the inclined beam (7) is fixedly connected to the side wall of the column (1).
4. The adjustable table vibration test fixture according to claim 1, characterized in that: The surface of the base (6) is evenly provided with circular holes.