CN203657995U - Laminated high-frequency vibration test clamp - Google Patents
Laminated high-frequency vibration test clamp Download PDFInfo
- Publication number
- CN203657995U CN203657995U CN201320777212.1U CN201320777212U CN203657995U CN 203657995 U CN203657995 U CN 203657995U CN 201320777212 U CN201320777212 U CN 201320777212U CN 203657995 U CN203657995 U CN 203657995U
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- laminated plate
- shearing resistance
- resistance laminated
- bottom board
- connecting bottom
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Abstract
The utility model discloses a laminated high-frequency vibration test clamp which comprises a connecting base plate (1), a connecting vertical plate (2), reinforcing ribs (3), bending-resistant laminated plates (4) and shearing-resistant laminated plates (5). Both the connecting base plate (1) and the connecting vertical plate (2) are rectangular; and the reinforcing ribs (3) are vertical to both connecting base plate (1) and the connecting vertical plate (2). During use of the laminated vibration test clamp, a tested device is hoisted to the installation surface of the laminated vibration test clamp; installation holes of the tested device are adjusted so that the tested device is aligned with installation holes of the laminated vibration test clamp; the position of an integrated gravity center of a combination of the laminated vibration test clamp and the tested device is adjusted, so that the axis of the integrated gravity center is overlapped with a movement axis of a vibration platform; and excitation is acted to carry out the vibration test. According to the utility model, the inherent frequency of the clamp under the same weight is greatly improved, and the transmission characteristic of the clamp is improved.
Description
Technical field
The present invention relates to a kind of vibration test fixture, particularly a kind of laminated type dither test fixture.
Background technology
In vibration test, fixture transmits medium as the link between shaking table and equipment under test and energy, and its dynamics directly affects the confidence level of vibration test.
Due to the singularity of vibration test fixture, ideally, fixture does not resonate in frequency range in test, undistorted can guarantee equipment to be subject to the vibrational excitation of defined in standard.If fixture by vibration damping, causes equipment " undertesting ", make original underproof product by test; If fixture will vibrate amplification, cause equipment " overtesting ", make original qualified product can not pass through test.Guarantee that fixture in test frequency range, resonance occurs and just requires fixture to have higher natural frequency, for guaranteeing that higher natural frequency must cause the increase greatly of clamp weight, the reducing of exportable acceleration that clamp weight is excessive must cause shaking table, this will reduce the effective push of shaking table greatly, the enforcement of impact test.
A kind of random vibration test cramp has been described in patented claim 200820096567.3, is made up of connecting bottom board, connection riser, stiffening rib, between three, is welded as a whole.Riser is polymorphic structure, equipment is installed more convenient, but clamp weight is not controlled, and also lacks the concrete measure that improves natural frequency.Patented claim 201120207852.X has described a kind of vibration tong, form by connecting riser, stiffening rib and a connecting bottom board, connect riser perpendicular to connecting bottom board, and fix with connecting bottom board, the bottom of two stiffening rib is separately fixed at the both sides of vibrating bottom plate, and the method for welding again after employing is threaded by three partial fixings together.This vibration tong lacks the control measure to weight equally, when improving natural frequency, makes fixture overweight.
In a word, the above patent is all based on traditional design, has mainly improved the architectural feature of fixture, thereby reaches raising natural frequency, the object such as easy to use, but the excessive so that test of weight is difficult to carry out when all for want of the control measure of weight cause fixture to improve natural frequency.
Utility model content
The object of the present invention is to provide a kind of laminated type dither test fixture, solve the excessive problem of weight that traditional vibration test fixture causes because improving natural frequency.
A kind of laminated type dither test fixture, comprising: connecting bottom board, connection riser and stiffening rib, also comprise: bending resistance laminated plate and shearing resistance laminated plate.
Connecting bottom board be connected riser and be rectangular slab, material is steel, aluminium, metal alloy or carbon fiber; Connecting bottom board horizontal positioned, connects riser and vertically places, and connects riser and connecting bottom board vertical welding and forms core skeleton; Described bending resistance laminated plate is rectangle honeycomb aluminum plate or non-metal honeycomb plate or glass epoxy, and bending resistance laminated plate is adhesive in the surface of core skeleton; Steel plate, aluminium sheet, metal alloy plate or carbon fiber board that described shearing resistance laminated plate is rectangle, shearing resistance laminated plate is adhesive in the surface of bending resistance laminated plate, bending resistance laminated plate and shearing resistance laminated plate are alternately laminated on core skeleton surface, it is one deck bending resistance laminated plate, one deck shearing resistance laminated plate, outermost layer is shearing resistance laminated plate, finally forms the sandwich structure that outside surface is shearing resistance laminated plate; Shearing resistance laminated plate and core skeleton welding, the shearing resistance laminated plate of horizontal positioned and the shearing resistance laminated plate welding of vertically placing; Stiffening rib is three layers of cementing rhythmo structure of triangle, and center is fiberglass, and both sides are the shearing resistance set square identical with shearing resistance laminated plate material, shearing resistance set square and shearing resistance laminated plate welding, stiffening rib perpendicular to connecting bottom board also perpendicular to connecting riser.Stiffening rib is N piece, wherein 2≤N≤5; Shearing resistance laminated plate including core skeleton and total number of plies of bending resistance laminated plate are M, M >=5 and be odd number.
When laminated type vibration test fixture uses, first laminated type vibration test fixture is lifted on shaking table platen; The installation direction of adjusting laminated type vibration test fixture with the vibrating shaft of shaking table to consistent; Equipment under test is lifted to laminated type vibration test fixture installed surface, and the mounting hole of adjusting equipment under test makes equipment under test align with the mounting hole of laminated type vibration test fixture; By the threaded hole on connecting bottom board and connection riser, equipment under test is fixed on fixture; Adjust the position of the comprehensive gravity center of laminated type vibration test fixture and equipment under test assembly, make the motion axis coinciding of comprehensive gravity center axis and shaking table; Then by the threaded hole on connecting bottom board, laminated type vibration test fixture is fixed on shaking table platen; Finally apply excitation and carry out vibration test.
The rhythmo structure that the present invention adopts can improve its natural frequency in alleviating clamp weight, and making increases in the natural frequency under equivalent weight greatly at fixture, has improved the transmission characteristic of fixture.
Accompanying drawing explanation
The structural representation of a kind of laminated type dither of Fig. 1 test fixture.
The cut-open view of a kind of laminated type dither of Fig. 2 test fixture.
1. connecting bottom board 2. connects riser 3. stiffening rib 4. bending resistance laminated plate 5. shearing resistance laminated plates
Embodiment
A kind of laminated type dither test fixture, comprising: connecting bottom board 1, connection riser 2, stiffening rib 3, also comprise: bending resistance laminated plate 4, shearing resistance laminated plate 5.
Connecting bottom board 1 be connected riser 2 and be rectangular metal plate; Connecting bottom board 1 horizontal positioned, connects riser 2 and vertically places, and connects riser 2 and forms core skeleton layer with connecting bottom board 1 welding; Bending resistance laminated plate 4 is glued to the both sides of core skeleton layer; Shearing resistance laminated plate 5 is glued to the surface of bending resistance laminated plate 4; Bending resistance laminated plate 4 and shearing resistance laminated plate 5 alternately appearance in core skeleton both sides, finally forming outside surface is the "T"-shaped structure of the multilayer build-up of shearing resistance laminated plate 5; Shearing resistance laminated plate 5 welds with the junction of core skeleton, the shearing resistance laminated plate of horizontal positioned and the shearing resistance laminated plate junction welding of vertically placing; Stiffening rib 3 is three layers of cementing rhythmo structure of triangle perpendicular to shearing resistance laminated plate 5, and center is fiberglass, and both sides are and the shearing resistance set square of the same material of shearing resistance laminated plate that weld the junction of shearing resistance set square and shearing resistance laminated plate 5.Stiffening rib 3 is three, and vibration test fixture is connected with shaking table platen by the threaded hole on the shearing resistance laminated plate 5 of level; Equipment under test is connected with vibration test fixture by the threaded hole on fixture; The total number of plies of lamination including core skeleton is five layers.
When laminated type vibration test fixture uses, first laminated type vibration test fixture is lifted on shaking table platen; The installation direction of adjusting laminated type vibration test fixture with the vibrating shaft of shaking table to consistent; Equipment under test is lifted to laminated type vibration test fixture installed surface, and the mounting hole of adjusting equipment under test makes equipment under test align with the mounting hole of laminated type vibration test fixture; By the threaded hole on fixture metal surface, equipment under test is fixed on fixture; Adjust the position of the comprehensive gravity center of laminated type vibration test fixture and equipment under test assembly, make the motion axis coinciding of comprehensive gravity center axis and shaking table; Then by the threaded hole on fixture, laminated type vibration test fixture is fixed on shaking table platen; Finally apply excitation and carry out vibration test.
Claims (3)
1. a laminated type dither test fixture, comprising: connecting bottom board (1), connection riser (2) and stiffening rib (3), characterized by further comprising: bending resistance laminated plate (4) and shearing resistance laminated plate (5);
Connecting bottom board (1) be connected riser (2) and be rectangular metal plate; Connecting bottom board (1) horizontal positioned, connects riser (2) and vertically places, and connects riser (2) and forms core skeleton with connecting bottom board (1) vertical welding; Bending resistance laminated plate (4) is adhesive in the surface of core skeleton; Shearing resistance laminated plate (5) is adhesive in the surface of bending resistance laminated plate (4), bending resistance laminated plate (4) is alternately laminated on core skeleton surface with shearing resistance laminated plate (5), it is one deck bending resistance laminated plate (4), one deck shearing resistance laminated plate (5), outermost layer is shearing resistance laminated plate (5), finally forms the sandwich structure that outside surface is shearing resistance laminated plate (5); Shearing resistance laminated plate (5) and core skeleton welding, the shearing resistance laminated plate (5) of horizontal positioned and shearing resistance laminated plate (5) welding of vertically placing; Stiffening rib (3) is three layers of cementing rhythmo structure of triangle, center is fiberglass, both sides are the shearing resistance set square identical with shearing resistance laminated plate (5) material, shearing resistance set square and shearing resistance laminated plate (5) welding, stiffening rib (3) perpendicular to connecting bottom board (1) also perpendicular to connecting riser (2); Stiffening rib (3) is N piece, wherein 2≤N≤5; Shearing resistance laminated plate (5) including core skeleton and total number of plies of bending resistance laminated plate (4) are M, M >=5 and be odd number.
2. a kind of laminated type dither test fixture according to claim 1, is characterized in that: the material of described connecting bottom board (1), connecting bottom board (2) and shearing resistance laminated plate (5) is steel, aluminium, metal alloy or carbon fiber.
3. a kind of laminated type dither test fixture according to claim 1, is characterized in that: the material of described bending resistance laminated plate (4) is fiberglass, honeycomb aluminum or non-metal honeycomb material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320777212.1U CN203657995U (en) | 2013-12-02 | 2013-12-02 | Laminated high-frequency vibration test clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320777212.1U CN203657995U (en) | 2013-12-02 | 2013-12-02 | Laminated high-frequency vibration test clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203657995U true CN203657995U (en) | 2014-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320777212.1U Expired - Fee Related CN203657995U (en) | 2013-12-02 | 2013-12-02 | Laminated high-frequency vibration test clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203657995U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607279A (en) * | 2017-09-05 | 2018-01-19 | 深圳航天东方红海特卫星有限公司 | Light high-stiffness vibration tong |
-
2013
- 2013-12-02 CN CN201320777212.1U patent/CN203657995U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607279A (en) * | 2017-09-05 | 2018-01-19 | 深圳航天东方红海特卫星有限公司 | Light high-stiffness vibration tong |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20141202 |
|
| EXPY | Termination of patent right or utility model |