CN109282957B - Vibration detection bracket - Google Patents

Abstract

The present invention discloses a vibration detection bracket. The vibration detection bracket includes a mounting structure and a fixed structure, wherein the mounting structure is arranged on a vibration table, the fixed structure is arranged on the mounting structure, the fixed structure is used to fix a test piece, and the fixed structure has a first fixed state and a first rotational state relative to the mounting structure. In the first fixed state, the fixed structure is fixed relative to the mounting structure, and in the first rotational state, the fixed structure rotates relative to the mounting structure to adjust the vibration detection orientation of the test piece. The vibration detection bracket of the present invention adjusts the vibration orientation of the test piece mounted on the fixed structure by rotating the fixed structure relative to the mounting structure. The vibration detection bracket is more convenient in adjusting the vibration detection orientation of the test piece, and the efficiency of the vibration test is increased.

Description

Vibration detection bracket

Technical Field

The present invention relates to the technical field of vibration detection, and in particular to a vibration detection bracket.

Background Art

The existing vibration bracket is mainly designed for vibration experiments of large products, and can realize multiple directions of the product, including up, down, left, and right. When such a vibration bracket adjusts the vibration direction of the product, the product needs to be removed from the vibration bracket and reinstalled on the vibration bracket after adjusting the direction. It is extremely inconvenient to adjust the vibration direction.

In reality, the vibration frequency of many small products is also quite high, and vibration tests are required. For example, relays of different specifications have a minimum outer dimension of only 70 mm x 70 mm. Sometimes only one product is tested for vibration in a batch. If a vibration bracket of the prior art is used for vibration testing, even if the outer dimension of the small product to be tested is small, the product needs to be removed from the vibration bracket, adjusted in position and then reinstalled on the vibration bracket. Adjusting the vibration position is extremely inconvenient and may even require the cooperation of multiple people, which is even more inconvenient.

Summary of the invention

In view of this, an object of the present invention is to provide a vibration detection bracket which is more convenient for adjusting the vibration orientation.

In order to achieve the above object, the present invention adopts the following technical solutions:

A vibration detection bracket comprises a mounting structure and a fixing structure, wherein the mounting structure is arranged on a vibration table, the fixing structure is arranged on the mounting structure, the fixing structure is used to fix a test piece, and the fixing structure has a first fixing state and a first rotation state relative to the mounting structure. In the first fixing state, the fixing structure is fixed relative to the mounting structure, and in the first rotation state, the fixing structure rotates relative to the mounting structure to adjust the vibration detection orientation of the test piece.

Preferably, the mounting structure includes a first mounting part and a second mounting part, the first mounting part is mounted on the vibration table, the second mounting part is connected to the first mounting part, the second mounting part includes two oppositely arranged parts, and the fixing structure is arranged between the two second mounting parts.

Preferably, the fixed structure comprises a first rotatable body,

The first rotatable body is rotated relative to the second mounting portion by a first rotating shaft which is simultaneously provided on the first rotatable body and the second mounting portion; and/or,

The first rotatable body is fixed relative to the second mounting portion through a threaded connection.

Preferably, the first rotatable body includes a first fixing portion and a matching portion, the matching portion includes two matching pieces arranged opposite to each other, the first rotating shaft is passed through the matching pieces and the second mounting portion, the first fixing portion is fixed between the two matching pieces, and the test piece can be fixed on the first fixing portion.

Preferably, the first fixing portion includes a plurality of first elongated holes, and the tested piece can be mounted on the first fixing portion through the first elongated holes.

Preferably, the fixed structure includes a second rotatable body, the test piece can be mounted on the second rotatable body, the second rotatable body has a second fixed state and a second rotational state relative to the first rotatable body, in the second fixed state, the second rotatable body is fixed relative to the first rotatable body, and in the second rotational state, the second rotatable body rotates relative to the first rotatable body.

Preferably, the first fixing portion comprises a first mounting hole, the second rotatable body is provided with a mounting post, and the mounting post is provided with a second mounting hole.

The second rotatable body is able to rotate relative to the first fixing portion by a second rotating shaft passing through the first mounting hole and the corresponding second mounting hole; and/or,

The second rotatable body is fixed relative to the first fixing part by threaded connection.

Preferably, the second rotatable body is provided with a second elongated hole, and the tested piece can be mounted on the second rotatable body through the second elongated hole.

Preferably, the device further comprises a fixture, which can be fixedly arranged on the first rotatable body or the second rotatable body, and the tested piece can be mounted on the fixture.

Preferably, the first rotatable body comprises a second fixing portion, the second fixing portion is fixed between the two matching members, and the clamp can be mounted on the second fixing portion.

Preferably, the clamp comprises two clamping members arranged opposite to each other, and the two clamping members can move closer to or farther from each other to clamp or release the tested piece.

The vibration detection bracket of the present invention, in the first fixed state, the fixed structure is fixedly arranged relative to the mounting structure, and the test piece is clamped. In this state, a vibration test is carried out on a vibration table. In the first rotational state, the vibration orientation of the test piece installed on the fixed structure is adjusted by rotating the fixed structure relative to the mounting structure. The vibration detection bracket is more convenient in adjusting the vibration detection orientation of the test piece, and the efficiency of the vibration test is increased.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings.

FIG1 is a schematic structural diagram of a vibration detection bracket of the present invention;

FIG2 is a schematic diagram of the assembly structure of the first rotatable body and the first rotating shaft of the present invention;

3 is a schematic diagram of the assembly structure of the tested object and the second rotatable body of the present invention;

FIG4 is a partial exploded view of the vibration detection bracket of the present invention;

FIG5 is a schematic diagram of an exemplary structure of a test piece of the present invention;

FIG6 is a schematic diagram of an exemplary structure of a clamp of the present invention;

FIG. 7 is a schematic diagram of the assembly structure of the fixing structure, the first rotating shaft and the tested piece of the present invention.

In the figure:

1. Mounting structure; 11. First mounting portion; 111. Mounting hole of first mounting portion; 12. Second mounting portion; 121. Sixth mounting hole; 122. Fifth mounting hole;

2. fixing structure; 21. first rotatable body; 211. first fixing part; 2111. first strip-shaped hole; 2112. first mounting hole; 212. matching part; 2121. matching piece; 2122. fourth mounting hole; 2123. first shaft mounting hole; 213. second fixing part; 2131. fixture mounting hole; 22. second rotatable body; 221. mounting column; 2211. second mounting hole; 222. second strip-shaped hole; 223. convex edge;

3. first rotating shaft; 31. nut;

4. Test piece; 41. Hole structure;

5. Second rotating shaft;

6. Clamp; 61. Mounting plate; 611. Third mounting hole; 62. Clamping piece.

DETAILED DESCRIPTION

The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the present invention, some specific details are described in detail.

In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout the specification and claims, the words "include", "comprising" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive sense; that is, in the sense of "including but not limited to".

In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

Referring to Figures 1 to 7, the present invention provides a vibration detection bracket for vibration experiments. The vibration detection bracket includes a mounting structure 1 and a fixed structure 2. As shown in Figure 1, the mounting structure 1 is arranged on a vibration table, and the fixed structure 2 is arranged on the mounting structure 1. The fixed structure 2 is used to fix a test piece 4, and the test piece 4 can be, for example, a relay. The fixed structure 2 has a first fixed state and a first rotation state relative to the mounting structure 1. In the first fixed state, the fixed structure 2 is fixed relative to the mounting structure 1. At this time, the test piece 4 can be subjected to a vibration test. In the first rotation state, the fixed structure 2 rotates relative to the mounting structure 1 to adjust the vibration detection orientation of the test piece 4. In the first rotation state, the fixed structure 2 does not need to be completely disconnected from the mounting structure 1, as long as the fixed structure 2 can be rotated with the mounting structure 1. In this way, the adjustment of the vibration detection orientation of the test piece 4 is more convenient and the efficiency is improved to a great extent.

The mounting structure 1 includes a first mounting portion 11 and a second mounting portion 12. As shown in Figures 1 and 4, the first mounting portion 11 is mounted on a vibration table, and the second mounting portion 12 is connected to the first mounting portion 11. The second mounting portion 12 is preferably vertically arranged on the first mounting portion 11. The second mounting portion 12 includes two oppositely arranged second mounting portions. The fixing structure 2 is arranged between the two second mounting portions 12. A first mounting portion mounting hole 111 is arranged on the first mounting portion 11. The first mounting portion 11 can be mounted on the vibration table by a fastener arranged at the first mounting portion mounting hole 111.

The fixing structure 2 includes a first rotatable body 21, as shown in FIG1, FIG2 and FIG4, the first rotatable body 21 includes a first fixing portion 211 and a matching portion 212, the matching portion 212 includes two matching pieces 2121 arranged opposite to each other, the first fixing portion 211 is fixed between the two matching pieces 2121, the tested piece 4 can be fixed on the first fixing portion 211, the first rotating shaft 3 is passed through the matching piece 2121 and the second mounting portion 12, the matching piece 2121 is provided with a first rotating shaft mounting hole 2123 for the first rotating shaft 3 to pass through, the second mounting portion 12 is provided with a sixth mounting hole 121 for the first rotating shaft 3 to pass through, the end of the first rotating shaft 3 is located on the side of the second mounting portion 12 away from the first rotatable body 21 and is provided with a nut 31, and the first rotatable body 21 can be fixed to the second mounting portion 12 by the nut 31. It can be understood that the end of the first rotating shaft 3 is provided with a thread matched with the nut. The matching portion 212 is provided with a fourth mounting hole 2122, and the second mounting portion 12 is provided with a fifth mounting hole 122 corresponding to the fourth mounting hole 2122. The fourth mounting hole 2122 is preferably arranged axially outside the first shaft mounting hole 2123, in the first fixed state. The fourth mounting hole 2122 may include a plurality of fasteners arranged at the fourth mounting hole 2122 while ensuring reliability. It can be understood that the first shaft 3 may be an integral long rod shaft or two short shafts.

The first rotatable body 21 is fixed to the second mounting portion 12 by the cooperation of the first rotating shaft 3 and the nut 31 and the fasteners simultaneously provided on the fourth mounting hole 2122 and the fifth mounting hole 122. In the first rotating state, by removing the fasteners provided on the fourth mounting hole 2122 and the fifth mounting hole 122 and loosening the nut 31 provided on the first rotating shaft 3, the first rotatable body 21 can be rotated around the first rotating shaft 3, thereby adjusting the first test piece 4 to an ideal position. When the vibration orientation of the first test piece 4 is adjusted, the first rotatable body 21 and the second mounting portion 12 are fastened again using the fasteners provided on the fourth mounting hole 2121 and the fifth mounting hole 122, and the nut 31 provided on the first rotating shaft 3 can be tightened to switch to the first fixed state, thereby realizing the vibration test of the test piece 4, and making the vibration orientation adjustment method of the vibration detection bracket of the present invention more convenient.

The first fixing portion 211 includes a plurality of first elongated holes 2111. As shown in FIGS. 1 and 2, the tested piece 4 can be installed on the first fixing portion 211 through the first elongated holes 2111. The tested piece 4 is correspondingly provided with a hole structure 41. As shown in FIG. 5, a plurality of first elongated holes 2111 are provided on the first fixing portion 211. The plurality of first elongated holes 2111 are arranged in parallel in a row. The first elongated holes 2111 are in a strip shape and are arranged in a row, so that the tested piece 4 provided with the hole structure 41 can be reliably installed on the first fixing portion 211.

The fixed structure 2 includes a second rotatable body 22. As shown in Figures 3, 4 and 7, the test piece 4 can be mounted on the second rotatable body 22. The second rotatable body 22 has a second fixed state and a second rotational state relative to the first rotatable body 21. In the second fixed state, the second rotatable body 22 is fixed relative to the first rotatable body 21. In the second rotational state, the second rotatable body 22 rotates relative to the first rotatable body 21. By setting the second rotatable body 22, more vibration test orientations of the test piece 4 can be adjusted, and the connection method between the second rotatable body 22 and the first rotatable body 21 can make the adjustment of the vibration test orientation of the test piece 4 more convenient.

The first fixing part 211 includes a plurality of first mounting holes 2112, and the second rotatable body 22 is provided with a plurality of mounting posts 221. As shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 7, each mounting post 221 is provided with a second mounting hole 2211. The second rotatable body 22 preferably rotates relative to the first fixing part 211 through the second rotating shaft 5 of the first mounting hole 2112 and the corresponding second mounting hole 2211 provided at the center of the first fixing part 11. Preferably, the second rotating shaft 5 is a bolt, so that the second rotatable body 22 can rotate around the second rotating shaft 5 and the second rotatable body 22 can be reliably fixed to the first rotatable body 21. Of course, bolts located outside the second rotating shaft 5 are also required to realize the reliable fixation between the second rotatable body 22 and the first rotatable body 21. Under the premise of ensuring the connection reliability, the number of bolts connecting the second rotatable body 22 and the first rotatable body 21 can be reduced as much as possible, thereby increasing the efficiency of adjusting the vibration orientation of the test piece 4.

A second elongated hole 222 is provided on the second rotatable body 22. As shown in Figures 3, 4 and 7, the test piece 4 can be installed on the second rotatable body 22 through the second elongated hole 222. The second elongated hole 222 allows the test pieces 4 of different sizes to be smoothly installed on the second rotatable body 22.

The second rotatable body 22 is provided with a flange 223. As shown in Figures 3, 4 and 7, the flange 223 is in the same direction as the mounting post 221. In the installed state, the flange 223 and the mounting post 221 face the first fixing portion 211. The setting of the flange 223 can prevent fasteners such as bolts and nuts provided at the second elongated hole 222 for fixing the test piece 4 from abutting against the first fixing portion 211, thereby ensuring the reliable installation of the first rotatable body 21 and the second rotatable body 22.

Preferably, the second rotatable body 22 can be made of Q235A (A3) steel, and the overall finish is processed to Ra6.3.

The vibration detection bracket further includes a fixture 6, as shown in FIG4 and FIG6, the fixture 6 can be fixedly set on the first rotatable body 21 or the second rotatable body 22, and the test piece 4 can be installed on the fixture 6. The fixture 6 allows the test piece 4 without the hole structure 41 to be installed on the vibration detection bracket of the present invention, thereby realizing the vibration test of the test piece 4. Of course, the test piece 4 with the hole structure 41 can also be installed on the vibration detection bracket of the present invention using the fixture 6.

The first rotatable body 21 includes a second fixed part 213, as shown in Figures 1, 2 and 4, the second fixed part 213 is preferably a frame structure, the frame of the second fixed part 213 is provided with a fixture installation hole 2131, the second fixed part 213 is fixed between the two matching parts 2121, and the second fixed part 213 may include multiple, for example, in a specific embodiment, the first rotatable body 21 includes a first fixed part 211 and three second fixed parts 213, one of the second fixed parts 213 is arranged opposite to the first fixed part 211, and the other two second fixed parts 23 are arranged opposite to each other, preferably, the first rotatable body 21 can be made of Q235A (A3 steel) after bending and welding. The fixture 6 is provided with a mounting plate 61, and the mounting plate 61 is provided with a third mounting hole 611 corresponding to the fixture mounting hole 2131, and the fixture 6 can be installed on the second fixed part 23 by fasteners arranged in the fixture mounting hole 2131 and the third mounting hole 611.

The clamp 6 includes two clamping members 62 arranged opposite to each other, as shown in FIG6 , the two clamping members 62 can be moved closer or further away to clamp or release the test piece 4, so as to achieve the clamping of the test piece 4. The clamp 6 used in the vibration detection bracket of the present invention can be a specially designed clamp or an existing flat-nose clamp, and the specifications of the flat-nose clamp can be purchased as needed. The approach and distance of the two clamping members 62 can be achieved by using a screw nut mechanism, a gear rack mechanism, and the like.

For the vibration detection bracket of the present invention, if the test piece 4 is provided with a hole structure 41, and a vibration detection experiment in one direction is performed on the test piece 4, it is only necessary to directly install the test piece 4 on the first fixing portion 211 of the first rotatable body 21. If the test piece 4 is provided with a hole structure 41, and a vibration detection experiment in three directions is required, the test piece 4 is first installed on the second rotatable body 22, and then the second rotatable body 22 is installed on the first fixing portion 211 of the first rotatable body 21. If the test piece 4 is not provided with a hole structure 41, and a vibration detection experiment in one direction is performed on the test piece 4, the test piece 4 is first fixed on the fixture 6, and then the fixture 6 is installed on the second fixing portion 213 on the first rotatable body 21. If the hole structure 41 is not provided on the test piece 4 and a vibration detection experiment is performed on the test piece 4 in three directions, the test piece 4 is first fixed on the fixture 6, and then the fixture 6 is installed on the second rotatable body 22, and then the second rotatable body 22 is installed on the first fixed portion 211 of the first rotatable body 21.

The vibration detection bracket of the present invention can be used to test a small-sized test piece 4 or a large-sized test piece 4 as long as the structural size of the vibration detection bracket meets the test requirements.

It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (7)

1. A vibration detection bracket, characterized in that it comprises a mounting structure and a fixing structure, wherein the mounting structure is arranged on a vibration table, the fixing structure is arranged on the mounting structure, the fixing structure is used to fix a test piece, the fixing structure has a first fixing state and a first rotation state relative to the mounting structure, in the first fixing state, the fixing structure is fixed relative to the mounting structure, and in the first rotation state, the fixing structure rotates relative to the mounting structure to adjust the vibration detection orientation of the test piece; The mounting structure comprises a first mounting portion and a second mounting portion, the first mounting portion is mounted on the vibration table, the second mounting portion is connected to the first mounting portion, and the fixing structure comprises a first rotatable body; The first rotatable body is rotated relative to the second mounting portion by a first rotating shaft which is simultaneously provided on the first rotatable body and the second mounting portion; and/or, The first rotatable body is fixed relative to the second mounting portion by a threaded connection; The first rotatable body includes a first fixing portion and a matching portion, the matching portion includes two matching pieces arranged opposite to each other, the first rotating shaft is passed through the matching pieces and the second mounting portion, the first fixing portion is fixed between the two matching pieces, and the tested piece can be fixed on the first fixing portion; The first fixing portion includes a plurality of first elongated holes, and the tested piece can be mounted on the first fixing portion through the first elongated holes; The fixed structure includes a second rotatable body, and the test piece can be mounted on the second rotatable body. The second rotatable body has a second fixed state and a second rotational state relative to the first rotatable body. In the second fixed state, the second rotatable body is fixed relative to the first rotatable body, and in the second rotational state, the second rotatable body rotates relative to the first rotatable body. 2 . The vibration detection bracket according to claim 1 , wherein the second mounting portion comprises two second mounting portions that are arranged opposite to each other, and the fixing structure is arranged between the two second mounting portions. 3. The vibration detection bracket according to claim 1, characterized in that the first fixing portion comprises a first mounting hole, the second rotatable body is provided with a mounting post, and the mounting post is provided with a second mounting hole, The second rotatable body is able to rotate relative to the first fixing portion by a second rotating shaft passing through the first mounting hole and the corresponding second mounting hole; and/or, The second rotatable body is fixed relative to the first fixing part by threaded connection. 4 . The vibration detection bracket according to claim 1 , wherein a second elongated hole is provided on the second rotatable body, and the tested piece can be installed on the second rotatable body through the second elongated hole. 5 . The vibration detection bracket according to claim 1 , further comprising a clamp, wherein the clamp can be fixedly disposed on the first rotatable body or the second rotatable body, and the test piece can be mounted on the clamp. 6 . The vibration detection bracket according to claim 5 , wherein the first rotatable body comprises a second fixing portion, the second fixing portion is fixed between the two matching members, and the clamp can be mounted on the second fixing portion. 7 . The vibration detection bracket according to claim 5 , wherein the clamp comprises two clamping members arranged opposite to each other, and the two clamping members can move closer to or farther from each other to clamp or release the test piece.