Rubber bushing test fixture

Abstract

The utility model provides a rubber bushing test fixture which comprises a first clamping block and a second clamping block which are distributed up and down, three auxiliary clamping structures which are symmetrically distributed up and down are arranged in the first clamping block and the second clamping block, and the three auxiliary clamping structures on the same horizontal plane are distributed in an arc shape. By designing the auxiliary clamping structure, during use, the lining is placed between the first clamping block and the second clamping block, the first lead screw is screwed to drive the first clamping block and the second clamping block to be close to each other, in the approaching process, the first telescopic pipe is reversely extruded by the lining and compresses the spring, and the spring can provide elastic force for fixing the lining with the pressing disc; and after the first folding block and the second folding block are in butt joint, the second lead screw is screwed until the bottom of the second lead screw abuts against the pressing disc, the bush is fixed for the second time, damage of the clamp to the bush is reduced, and the accuracy of follow-up testing is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a rubber bushing testing clamp. Background Art

[0002] With the continuous improvement of automobile technology, the performance requirements for its accessories are also increasing day by day. Automobile rubber shock-absorbing bushings play the role of isolating vibrations during the driving of the car and flexibly bridging between various components, which plays a vital role in the safety and comfort of automobile driving.

[0003] The mechanical properties of the bushing are usually completed in the laboratory. During the performance test, the bushing needs to be fixed by a fixture for testing. For example, when testing the torsional fatigue of the bushing, two three-meat chucks are usually used to fix the bushing. However, during the test, a large clamping torque is required, so the fixation of the bushing by the chuck will cause certain damage to the bushing, affecting the test results.

[0004] Therefore, in response to the above problems, we propose a rubber bushing test fixture. Utility Model Content

[0005] The utility model aims to provide a rubber bushing test fixture to solve the problems raised by the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rubber bushing test fixture, comprising a first clamping block and a second clamping block distributed up and down, three auxiliary clamping structures symmetrically distributed up and down are arranged inside the first clamping block and the second clamping block, and the three auxiliary clamping structures on the same horizontal plane are distributed in an arc shape, and the first clamping block and the second clamping block are respectively fixedly installed with a first closing block and a second closing block on the same side outer wall, and the first clamping block and the second clamping block are fixedly installed with the same connecting block on the outer wall of the side away from the first closing block and the second closing block.

[0007] As a further description of the utility model: the auxiliary clamping structure includes a first telescopic tube and a second telescopic tube, the second telescopic tube is fixedly installed inside the first clamping block, the inner diameter of the first telescopic tube matches the outer diameter of the second telescopic tube, a spring is installed inside the first telescopic tube, and both ends of the spring are fixedly connected to the first telescopic tube and the second telescopic tube respectively.

[0008] As a further description of the present invention: a second screw rod is threadedly connected to the inside of the second telescopic tube, and a second turntable is fixedly mounted on one end of the second screw rod away from the first telescopic tube.

[0009] As a further description of the present invention: a pressure plate is fixedly installed on one end of the first telescopic tube away from the second telescopic tube, and the pressure plate is made of elastic rubber material.

[0010] As a further description of the present utility model: A slider is fixedly installed on the outer wall of the connecting block away from the first clamping block. An installation block is arranged on the side of the connecting block away from the first clamping block. A sliding groove for the up-and-down sliding of the slider is opened on the side wall of the installation block. A first lead screw is rotatably connected inside the installation block. A first turntable is fixedly installed at the top of the first lead screw. A threaded hole adapted to the first lead screw is opened inside the slider.

[0011] As a further description of the present utility model: Fixed blocks are fixedly installed on the front and rear side walls of the installation block. Three fixed holes are equidistantly distributed up and down inside the fixed blocks.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] By designing an auxiliary clamping structure on a rubber bushing test fixture, when in use, place the bushing between the first clamping block and the second clamping block, and turn the first lead screw to drive the first clamping block and the second clamping block to approach each other. During the approaching process, the first telescopic tube is reversely squeezed by the bushing, compressing the spring, and the spring can give the elastic force to the pressure plate to fix the bushing initially. When the first closing block and the second closing block are butted, turn the second lead screw until the bottom of the second lead screw abuts against the pressure plate to fix the bushing secondly, reducing the damage of the fixture to the bushing and improving the accuracy of subsequent tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the structure of the first clamping block, the second clamping block and their components of the present utility model;

[0016] Figure 3 is a schematic diagram of the auxiliary clamping structure of the present utility model.

[0017] In the figure: 1, first clamping block; 2, second clamping block; 3, auxiliary clamping structure; 301, first telescopic tube; 302, second telescopic tube; 303, spring; 304, second lead screw; 305, second turntable; 306, pressure plate; 4, first closing block; 5, second closing block; 6, connecting block; 7, slider; 8, installation block; 9, first lead screw; 10, first turntable; 11, threaded hole; 12, fixed block; 13, fixed hole; 14, sliding groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1 - 3 , the present invention provides a technical solution: a rubber bushing test fixture, including a first clamping block 1 and a second clamping block 2 distributed up and down. There are three auxiliary clamping structures 3 symmetrically distributed up and down inside the first clamping block 1 and the second clamping block 2. The three auxiliary clamping structures 3 on the same horizontal plane are arc-shaped. A first closing block 4 and a second closing block 5 are respectively fixedly installed on the outer walls of the same side of the first clamping block 1 and the second clamping block 2. Connecting blocks 6 of the same kind are fixedly installed on the outer walls of the first clamping block 1 and the second clamping block 2 on the side far from the first closing block 4 and the second closing block 5.

[0020] In this embodiment: The auxiliary clamping structure 3 includes a first telescopic tube 301 and a second telescopic tube 302. The second telescopic tube 302 is fixedly installed inside the first clamping block 1. The inner diameter size of the first telescopic tube 301 matches the outer diameter size of the second telescopic tube 302. A spring 303 is installed inside the first telescopic tube 301, and both ends of the spring 303 are fixedly connected to the first telescopic tube 301 and the second telescopic tube 302 respectively.

[0021] During specific use: When the first clamping block 1 and the second clamping block 2 approach each other, the first telescopic tube 301 is reversely squeezed by the bushing, and the spring 303 will be compressed. The spring 303 can give the pressing plate 306 an elastic force to fix the bushing, so as to initially fix the bushing.

[0022] In this embodiment: A second lead screw 304 is threadedly connected inside the second telescopic tube 302. A second turntable 305 is fixedly installed at one end of the second lead screw 304 far from the first telescopic tube 301.

[0023] During specific use: The second lead screw 304 can spiral up and down inside the second telescopic tube 302 to fix the lengths of the first telescopic tube 301 and the second telescopic tube 302, preventing the situation that the spring 303 has insufficient pressure during the test of the bushing and cannot fix the bushing.

[0024] In this embodiment: A pressing plate 306 is fixedly installed at one end of the first telescopic tube 301 far from the second telescopic tube 302. The pressing plate 306 is made of elastic rubber material.

[0025] During specific use: The pressing plate 306 made of elastic rubber material can reduce the damage to the bushing caused by the approach of the first clamping block 1 and the second clamping block 2, and reduce the damage to the bushing after fixation.

[0026] In this embodiment: A slider 7 is fixedly installed on the outer wall of one side of the connecting block 6 away from the first clamping block 1. An installation block 8 is arranged on the side of the connecting block 6 away from the first clamping block 1. A sliding groove 14 for the up-and-down sliding of the slider 7 is opened on the side wall of the installation block 8. A first lead screw 9 is rotatably connected inside the installation block 8. A first turntable 10 is fixedly installed at the top end of the first lead screw 9. A thread hole 11 adapted to the first lead screw 9 is opened inside the slider 7.

[0027] During specific use: The first turntable 10 can be driven by the staff to rotate the first lead screw 9. Since the thread hole 11 is opened inside the slider 7, when the first lead screw 9 rotates, the slider 7 can be driven to slide up and down inside the sliding groove 14, thereby adjusting the distance between the first clamping block 1 and the second clamping block 2 to pick up and place the bushing.

[0028] In this embodiment: Fixed blocks 12 are fixedly installed on the front and rear side walls of the installation block 8. Three equally spaced fixing holes 13 are opened inside the fixed blocks 12.

[0029] During specific use: The fixed blocks 12 and the fixing holes 13 can connect the installation block 8 with the equipment providing torque from the outside.

[0030] Working principle: During use, the installation block 8 is connected with the equipment providing torque through the fixed blocks 12 and the fixing holes 13. When clamping the bushing, the bushing is placed between the first clamping block 1 and the second clamping block 2, and the first lead screw 9 is rotated to drive the first clamping block 1 and the second clamping block 2 to approach each other. During the approaching process, the first telescopic tube 301 is reversely extruded by the bushing and will compress the spring 303, and the spring 303 can give the pressing plate 306 the elastic force to fix the bushing to initially fix the bushing. When the first closing block 4 and the second closing block 5 are butted, the second lead screw 304 is rotated until the bottom of the second lead screw 304 abuts against the pressing plate 306 to secondarily fix the bushing, reducing the damage of the fixture to the bushing and improving the accuracy of subsequent tests.

[0031] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A rubber bushing test fixture, comprising a first clamping block (1) and a second clamping block (2) distributed up and down, characterized in that: Inside the first clamping block (1) and the second clamping block (2), there are three auxiliary clamping structures (3) symmetrically distributed up and down. The three auxiliary clamping structures (3) on the same horizontal plane are arc-shaped. On the outer walls of the same side of the first clamping block (1) and the second clamping block (2), a first closing block (4) and a second closing block (5) are respectively fixedly installed. On the outer walls of the sides of the first clamping block (1) and the second clamping block (2) far from the first closing block (4) and the second closing block (5), identical connecting blocks (6) are fixedly installed.

2. The rubber bushing test fixture according to claim 1, characterized in that: The auxiliary clamping structure (3) includes a first telescopic tube (301) and a second telescopic tube (302). The second telescopic tube (302) is fixedly installed inside the first clamping block (1). The inner diameter dimension of the first telescopic tube (301) matches the outer diameter dimension of the second telescopic tube (302). A spring (303) is installed inside the first telescopic tube (301), and both ends of the spring (303) are fixedly connected to the first telescopic tube (301) and the second telescopic tube (302) respectively.

3. The rubber bushing test fixture according to claim 2, characterized in that: A second lead screw (304) is threadedly connected inside the second telescopic tube (302). One end of the second lead screw (304) far from the first telescopic tube (301) is fixedly installed with a second turntable (305).

4. A rubber bushing test fixture according to claim 2, characterized in that: One end of the first telescopic tube (301) far from the second telescopic tube (302) is fixedly installed with a pressure plate (306). The pressure plate (306) is made of elastic rubber.

5. A rubber bushing test fixture according to claim 1, characterized in that: On the outer wall of the side of the connecting block (6) far from the first clamping block (1), a slider (7) is fixedly installed. On the side of the connecting block (6) far from the first clamping block (1), there is an installation block (8). A sliding groove (14) for the slider (7) to slide up and down is opened on the side wall of the installation block (8). A first lead screw (9) is rotatably connected inside the installation block (8). The top of the first lead screw (9) is fixedly installed with a first turntable (10). A threaded hole (11) adapted to the first lead screw (9) is opened inside the slider (7).

6. The rubber bushing test fixture according to claim 5, characterized in that: Fixed blocks (12) are fixedly installed on the front and rear side walls of the installation block (8). Three fixed holes (13) equally spaced up and down are opened inside the fixed blocks (12).

Images