CN114963896A - Vibration clamp with two-in-one-drag-spring - Google Patents

Abstract

The invention discloses a one-to-two vibration clamp structure, which relates to the field of missile vibration testing and comprises a base, a first support, a second support, a T-shaped block and a cover plate. The embodiment of the invention is as follows: the base is connected with the vibration table, so that the vibration test is controlled by the vibration table; placing the vibration test piece on the curved surfaces of the first support and the second support, and connecting the first support and the second support with the cover plate through the T-shaped block, so as to fix two vibration test pieces at the same time and carry out vibration test; through dismantling T type piece for first support and second support are separated with the apron, change vibration test piece direction, accomplish the vibration test of three directions of vibration test piece. The invention can simultaneously fix two vibration test pieces, carry out vibration tests in different directions and improve the test efficiency.

Description

A vibrating clamp with one drag and two bombs

technical field

The invention relates to the field of missile vibration testing, in particular to a one-for-two vibration clamp structure.

Background technique

Missile test is an important work item in the process of missile development, production and use. It is used to check and verify the function and main technical performance of the missile system, locate faults, and adjust unqualified parameters or replace faulty ones when necessary and permitted. To ensure that the technical performance of the missiles produced by the factory meets the requirements and the missiles used by the troops are in a good state of readiness. In order to test whether the missile meets the performance requirements, it is necessary to use a vibration fixture to fix the missile on the ground for vibration test. In order to save the cost of vibration test, it is hoped that two missile vibration test pieces can be tested at one time, and the technology of the present invention emerges as the times require.

SUMMARY OF THE INVENTION

Aiming at the problem that the vibration of the missile needs to be clamped on the ground, the invention designs a vibration clamp structure with one for two, which can clamp two vibration test pieces at the same time during the vibration test, simulate the vibration environment of the vibration test piece, and through the transformation The placement direction of the vibration test piece is to test whether the vibration test piece meets the vibration performance requirements in the three directions of x, y, and z.

The present invention is realized in this way:

A kind of vibration clamp with one drag and two bombs, characterized in that, the vibration clamp comprises a base, a first support and a second support are installed above the base, and the first support and the second support are mirror images. , to realize the vibration test in multiple directions; the first bracket and the second bracket are provided with four corresponding curved surfaces around the body; the top of the first bracket and the second bracket is a cover plate; the cover plate is in the middle Axisymmetric structure, and the symmetrical structure is also provided with four curved surfaces. Combined together to meet the form factor for vibration testing.

Further, the first bracket and the second bracket are installed together with the cover plate through the T-shaped block, and the vibration test piece is fixed by the first bracket, the second bracket and the cover plate, so as to carry out the vibration test; the first bracket The top of the bracket and the second bracket are in the form of a dovetail groove, which is convenient for the first bracket and the second bracket to be connected with the cover plate.

Further, the top part of the cover plate is hollowed out; reinforcing ribs are added on both sides of the cover plate. In order to reduce the quality of the one-for-two vibration clamp, the top part of the cover plate is hollowed out; in order to increase the first-order natural frequency, reinforcing ribs are added to both sides of the cover plate.

Further, considering that the bracket and the cover plate need to be separated frequently to replace the vibration test piece, the material of the T-block was chosen to be steel to make it more resistant to wear.

Further, the base and the vibration table are connected by screws, so that the vibration test of the vibration test piece is controlled by the vibration table. The base is respectively connected with the first bracket and the second bracket above by screws; the first bracket and the second bracket are respectively connected with the cover plate on the top through the T-shaped block, The first bracket and the second bracket are combined with the cover plate to fix the vibration test piece to prevent the vibration test piece from moving during the vibration test.

Further, in order to facilitate the assembly and connection of the cover plate and the first bracket and the second bracket through the T-shaped block, the T-shaped block is used for interference fit with the pin rod having a positioning function. The rod blocks the further penetration of the T-shaped block, so that the bolt holes of the cover plate are aligned with the holes of the bolt holes of the T-shaped block.

Further, the working mode of the vibration fixture is as follows: by connecting the base with the vibration table, the vibration test is controlled by the vibration table; the vibration test piece is placed on the curved surfaces of the first bracket and the second bracket, and the vibration test piece is placed on the curved surface of the first bracket and the second bracket, and passed through the T-shaped The first bracket and the second bracket are connected to the cover plate, so as to fix two vibration test pieces at the same time, and conduct the vibration test; by removing the T-block, the first bracket and the second bracket are separated from the cover plate, and the vibration test is replaced. The vibration test of the vibration test piece in the three directions of x, y, and z is completed, and the vibration clamp realizes the vibration test of the vibration test piece in the three directions of x, y, and z. Specifically, the T-block is removed to make the first The first bracket and the second bracket are separated from the cover plate, and the direction of the vibration test piece can be changed without changing the direction of the base of the one-to-two vibration fixture and the vibration table; when the x-direction of the vibration test piece and the y-direction of the one-to-two vibration fixture are installed When overlapping, the vibration test of the x- and y-direction of the vibration test piece can be realized; when the x-direction of the vibration test piece is coincident with the x-direction of the one-to-two vibration fixture, the z-direction vibration test of the vibration test piece can be realized.

The beneficial effects of the present invention and the prior art are:

The invention is a vibration fixture which can fix and hold two vibration test pieces at the same time and can conduct vibration tests in multiple directions. The bracket and the cover plate in the one-for-two vibration fixture can withstand two vibration test pieces together, and the bottom plate in the one-for-two vibration fixture is connected to the vibration table, which can make the vibration test of the vibration test piece subject to vibration. console control.

Description of drawings

1 is an overall schematic diagram of a one-for-two vibration clamp structure of the present invention;

2 is a front view of a one-for-two vibration clamp structure of the present invention;

Fig. 3 is the overall solid diagram of the T-shaped block and the pin rod in a one-for-two vibration clamp structure of the present invention;

Fig. 4 is the overall solid figure of the base in a kind of one-for-two vibration clamp structure of the present invention;

Fig. 5 is the overall solid figure of the support in a kind of one-for-two vibration clamp structure of the present invention;

6 is an overall solid view of a cover plate in a one-for-two vibration clamp structure of the present invention;

7 is a schematic diagram of installing two vibration test pieces (x, y directions) in a one-for-two vibration fixture structure in an embodiment of the present invention;

8 is a schematic diagram of installing two vibration test pieces (z-direction) in a one-for-two vibration fixture structure according to an embodiment of the present invention;

Among them, 1-cover, 2-T block, 3-first bracket, 4-second bracket, 5-base, 6-pin rod.

Detailed ways

In order to make the purpose, technical scheme and effect of the present invention clearer and clearer, the following examples are given to further illustrate the present invention in detail. It should be pointed out that the specific implementations described herein are only used to explain the present invention, and not to limit the present invention.

As shown in FIGS. 1-6 , the present invention includes a cover plate 1 , a T-shaped block 2 , a first bracket 3 , a second bracket 4 and a base 5 . The first bracket 3 and the second bracket 4 of the present invention are installed on the base 5, the vibration test piece is placed on the curved surface of the first bracket 3 and the second bracket 4, and the first bracket 3 and the second bracket 4 pass through the T-shaped block 2. Installed with the cover plate 1, the vibration test piece can be fixed for vibration testing.

The base of the present invention sets the base hole size according to the interface requirements of the vibrating table, and has 82 holes symmetrically distributed about the two axes of the plane, as shown in Figure 4. In order to connect with the first bracket 3 and the second bracket 4, two sets of hole positions mirrored along the plane axis are designed. The described first support 3 and the second support 4 are mirror images, in order to realize the vibration test in multiple directions, according to the size information of the vibration test piece, the first support and the second support are provided with corresponding 4 curved surfaces; In order to connect the first bracket 3 and the second bracket 4 with the cover plate 1 , the top ends of the first bracket and the second bracket are designed in the form of a dovetail groove. In order to allow the cover plate 1 to be connected with the two brackets, the cover plate is designed to be symmetrical in its axis, and there are 4 curved surfaces on both sides respectively, then the curved surface of the cover plate and the curved surface of the bracket are combined together. Meet the external dimensions of the vibration test piece.

The base 5 is connected with the vibration table by screws, so that the vibration test of the vibration test piece is controlled by the vibration table. The base 5 is respectively connected to the first bracket 3 and the second bracket 4 above through screws; the first bracket 3 and the second bracket 4 are respectively connected to the top bracket through the T-block 2 The cover plate 1 is connected, and the first bracket 3 and the second bracket 4 are combined with the cover plate 1 to fix the vibration test piece to prevent the vibration test piece from moving during the vibration test.

In order to facilitate the assembly and connection of the cover plate and the first bracket 3 and the second bracket 4 through the T-shaped block 2, the T-shaped block and the pin 6 with positioning function are used for interference fit to assemble. When the pin 6 blocks the T-block 2 from continuing to penetrate further, the bolt holes of the cover plate are aligned with the holes of the T-block bolt holes.

In order to carry out the vibration test, the base 5 is connected to the vibration table, the combined center of gravity of the one-to-two vibration fixture and the vibration test piece is coincident with the center of the vibration table, and the deviation is not greater than 10mm, and after clamping two vibration test pieces, the two vibration test pieces are clamped. The frequency response deviation of the vibration test piece at the same position is within 10%.

In order to realize the vibration test of the vibration test piece in three directions, it is only necessary to disassemble the T-block 2, so that the first bracket 3 and the second bracket 4 are separated from the cover plate 1, and the direction of the vibration test piece can be changed without changing the one-to-two vibration. The orientation of the fixture base 5 and the vibrating table. When the x-direction of the vibration test piece coincides with the y-direction installation of the one-to-two vibration fixture, the vibration test of the x- and y-direction of the vibration test piece can be realized, as shown in Figure 7. When the x-direction of the vibration test piece coincides with the x-direction of the one-to-two vibration fixture, the z-direction vibration test of the vibration test piece can be realized, as shown in Figure 8.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, some improvements can be made without departing from the principles of the present invention, and these improvements should also be regarded as the present invention. the scope of protection of the invention.

Claims (8)

1. The vibration clamp for one-to-two bombs is characterized by comprising a base (5), wherein a first support (3) and a second support (4) are arranged above the base (5), and the first support (3) and the second support (4) are mirror images, so that vibration tests in multiple directions are realized; the first bracket (3) and the second bracket (4) are provided with four corresponding curved surfaces on the whole body;

a cover plate (1) is arranged above the first support (3) and the second support (4);

apron (1) be axis symmetrical structure, and symmetrical structure also all sets up four curved surfaces, apron (1) curved surface and the curved surface looks adaptation of first support (3) and second support (4), the curved surface combination of apron (1) curved surface and first support (3) and second support (4) satisfy the overall dimension of vibration test piece together.

2. A vibration clamp for a two-drag bomb according to claim 1, wherein the first support (3) and the second support (4) are mounted with the cover plate (1) through a T-shaped block (2), and a vibration test piece is fixed through the first support (3), the second support (4) and the cover plate (1) so as to perform vibration test; the top ends of the first support (3) and the second support (4) are in a dovetail groove form, so that the first support and the second support are connected with the cover plate conveniently.

3. A vibration clamp for two-in-one ammunition according to claim 2, wherein the top end of the cover plate (1) is hollowed; reinforcing ribs are added on two sides of the cover plate (1).

4. A two-drag-spring vibration jig according to claim 2 wherein the material of the T-shaped block is selected from steel.

5. A vibration clamp for two-in-one bombs according to claim 1, wherein the base (5) is connected with the vibration table by screws, so that the vibration test is controlled by the vibration table; the base is connected with the first support and the second support through screws respectively.

6. A vibration clamp for two-in-one bombs according to claim 1, wherein the T-shaped block is in interference fit with a pin (6) with positioning function, and the pin blocks the T-shaped block from further going deep during assembly, so that the bolt hole of the cover plate is aligned with the hole site of the bolt hole of the T-shaped block, and the cover plate is conveniently connected with the first support and the second support through the T-shaped block.

7. The vibration clamp for two-in-one bombs according to claim 1, wherein the vibration clamp works in the following way: the base is connected with the vibration table, so that the vibration test is controlled by the vibration table; placing the vibration test piece on the curved surfaces of the first support and the second support, and connecting the first support and the second support with the cover plate through the T-shaped block, so as to fix two vibration test pieces at the same time and carry out vibration test; through dismantling T type piece for first support and second support are separated with the apron, change vibration test piece direction, accomplish the vibration test of three directions of vibration test piece x, y, z.

8. The vibration clamp for two-in-one bombs according to claim 1, wherein the vibration clamp realizes vibration tests of a vibration test piece in three directions of x, y and z, and specifically comprises: the T-shaped block (2) is disassembled, so that the first support (3) and the second support (4) are separated from the cover plate (1), the direction of a vibration test piece can be changed, and the direction of the base (5) of the one-to-two vibration clamp and the direction of the vibration table do not need to be changed; when the x direction of the vibration test piece is superposed with the y direction of the one-driving-two vibration clamp, the vibration test of the vibration test piece in the x direction and the y direction can be realized; when the x direction of the vibration test piece is coincident with the x direction of the one-driving-two vibration clamp, the z-direction vibration test of the vibration test piece can be realized.

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