CN110849567A - Impact vibration test fixture - Google Patents

Impact vibration test fixture Download PDF

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Publication number
CN110849567A
CN110849567A CN201911300440.8A CN201911300440A CN110849567A CN 110849567 A CN110849567 A CN 110849567A CN 201911300440 A CN201911300440 A CN 201911300440A CN 110849567 A CN110849567 A CN 110849567A
Authority
CN
China
Prior art keywords
block
pressing
positioning block
pressing block
support plates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911300440.8A
Other languages
Chinese (zh)
Inventor
李文平
杨芳
廖敏昱
魏文龙
王敏辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangnan Industries Group Co Ltd
Original Assignee
Jiangnan Industries Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangnan Industries Group Co Ltd filed Critical Jiangnan Industries Group Co Ltd
Priority to CN201911300440.8A priority Critical patent/CN110849567A/en
Publication of CN110849567A publication Critical patent/CN110849567A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00Vibration-testing of structures; Shock-testing of structures
    • G01M7/02Vibration-testing by means of a shake table
    • G01M7/027Specimen mounting arrangements, e.g. table head adapters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00Vibration-testing of structures; Shock-testing of structures
    • G01M7/02Vibration-testing by means of a shake table
    • G01M7/06Multidirectional test stands
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00Vibration-testing of structures; Shock-testing of structures
    • G01M7/08Shock-testing

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The invention discloses an impact vibration test fixture which comprises a bottom plate, two support plates, a positioning block, a plurality of pressing blocks I and a plurality of pressing blocks II, wherein the bottom plate is provided with a plurality of supporting plates; the two support plates are fixedly arranged at the two ends of the bottom plate and arranged in parallel, and the positioning block, the pressing block I and the pressing block II are arranged between the two support plates; the positioning block, the pressing block I and the pressing block II are connected through a plurality of double-end studs, and clamping arc-shaped grooves used for clamping workpieces are formed in the positioning block, the pressing block I and the pressing block II. The invention has simple and reliable structure, can clamp a plurality of workpieces at one time, can carry out three-axis six-direction impact vibration tests, obviously improves the production efficiency of products, does not need to remount and fix the workpieces when carrying out the third-axis impact vibration test, and reduces the labor intensity of workers.

Description

Impact vibration test fixture
Technical Field
The invention relates to a shock vibration test fixture.
Background
The existing clamp for the impact test of the medium-large revolving body type workpieces can only perform the impact vibration test on a single medium-large revolving body workpiece, and can only perform the impact vibration test on four directions of two shafts under the condition of not moving the clamp. If a third axis impact vibration test is carried out on a large-scale revolving body workpiece, the position of the clamp needs to be changed to adjust the direction of the workpiece. This not only increases workman intensity of labour, and has prolonged the whole production cycle of work piece. The clamp can clamp a plurality of workpieces at one time, and can carry out three-axis six-direction impact vibration tests without moving the workpieces.
Disclosure of Invention
In order to solve the technical problems, the invention provides the impact vibration test fixture which has a simple structure, is labor-saving in operation and convenient to use, can clamp a plurality of workpieces at one time, and can perform the three-axis six-direction impact vibration test without moving the workpieces.
The technical scheme adopted by the invention is as follows: the device comprises a bottom plate, two support plates, a positioning block, a plurality of pressing blocks I and a plurality of pressing blocks II; the two support plates are fixedly arranged at the two ends of the bottom plate and arranged in parallel, and the positioning block, the pressing block I and the pressing block II are arranged between the two support plates; the positioning block is arranged on the bottom plate, and two ends of the positioning block are connected with the two support plates through screws; a plurality of pressing blocks I are arranged above the positioning block in parallel, and pressing blocks II are arranged above the pressing blocks I; the positioning block, the pressing block I and the pressing block II are connected through a plurality of double-end studs, the lower ends of the double-end studs are installed in threaded holes of the positioning block, and the upper ends of the double-end studs extend out of the top surface of the pressing block II and are fixed through nuts; two ends of a press block I are respectively connected with the two support plates, and after a screw between the positioning block and the support plates is dismounted, the positioning block, the press block I and the press block II can pivot around the connection position of the press block I and the two support plates; arc-shaped grooves with the same diameter are respectively arranged on the top surface of the positioning block, the top surface and the bottom surface of the pressing block I and the bottom surface of the pressing block II, and the arc-shaped groove on the top surface of the positioning block is coaxial with the arc-shaped groove on the bottom surface of the pressing block I adjacent to the positioning block; the arc-shaped grooves on the opposite surfaces of the adjacent pressing blocks I are coaxial; the arc-shaped groove on the bottom surface of the pressing block II is coaxial with the arc-shaped groove on the top surface of the pressing block I adjacent to the arc-shaped groove.
In the impact vibration test fixture, the positioning block, the pressing block I and the pressing block II are connected through two double-end studs; a plurality of springs are sleeved on each stud and are positioned between the positioning block and the pressing blocks I adjacent to the positioning block, between the adjacent pressing blocks I and between the pressing block II and the pressing blocks I adjacent to the pressing block II.
In the impact vibration test fixture, two pin holes are respectively formed in two end faces of the pressing block I, threaded pins are arranged in the pin holes and are in interference fit with the pin holes, the threaded pins are fixed in the pin holes through set screws, long straight holes are formed in the two support plates corresponding to the threaded pins, and threaded ends of the threaded pins are located in the long straight holes and are fixedly connected with the support plates through nuts; the middle part of the support plate is provided with a U-shaped groove I, the opening of the U-shaped groove I is communicated with the long straight hole, and the opening of the U-shaped groove is provided with a chamfer.
In the impact vibration test fixture, the positioning block, the pressing block I, the pressing block II and the bottom plate are all made of aluminum, and the two support plates, the threaded pin and the double-ended stud are all made of 45 steel.
In the impact vibration test fixture, the two end faces of the positioning block are respectively provided with a blind hole, a threaded sleeve is arranged in the blind hole, and the threaded sleeve is fixed in the blind hole through a set screw; and the two support plates are respectively provided with a U-shaped groove II corresponding to the threaded sleeve, and the screw extends into the U-shaped groove II from the U-shaped groove II and is in threaded connection with the threaded sleeve.
In the impact vibration test fixture, a layer of rubber is arranged on the inner wall of the arc-shaped groove on the top surface of the positioning block, the top surface and the bottom surface of the pressing block I and the bottom surface of the pressing block II.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention has simple and reliable structure, reduces the operation difficulty and the labor intensity and improves the working efficiency.
2. The invention can clamp a plurality of workpieces at one time, can carry out three-axis six-direction impact vibration tests, obviously improves the production efficiency of products, does not need to install and fix the workpieces again when carrying out the third-axis impact vibration test and reduces the labor intensity of workers.
3. The positioning pieces are all made of aluminum, so that the overall weight of the clamp is greatly reduced, and the labor intensity of operators is reduced.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a right side view of the present invention.
Fig. 3 is a schematic structural view of X, Y shaft during impact vibration.
FIG. 4 is a schematic view of the Z-axis shock vibration structure of the present invention.
FIG. 5 is a schematic view of a support plate U-shaped channel of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in figures 1 and 2, the invention comprises a bottom plate 1, a positioning block 2, a pressing block I3, a pressing block II 8, a stud 9 and two support plates 6. The two support plates 6 are respectively fixedly arranged at two ends of the bottom plate 1 through screws 13, and the two support plates 6 are arranged in parallel. The positioning block 2, the pressing block I3 and the pressing block II 8 are arranged between the two support plates 6; the number of the pressing blocks I3 is one, but not limited to one, and can be multiple. The positioning block 2 is arranged on the bottom plate 1, and the positioning block 2 is fixedly connected with the two support plates 6; two end faces of the positioning block 2 are respectively provided with a blind hole, a threaded sleeve 10 is arranged in the blind hole, and the threaded sleeve 10 is fixed in the blind hole through a set screw 12. The two support plates 6 are respectively provided with a U-shaped groove II 63 corresponding to the threaded sleeves, and the screws 11 extend into the U-shaped grooves II 63 and are in threaded connection with the threaded sleeves 12. Briquetting I3 is arranged in 2 tops of locating piece, and when briquetting I3 was the polylith, polylith briquetting I3 parallel arrangement. Briquetting II 8 is located briquetting I3 top.
Locating piece 2, briquetting I3 and briquetting II 8 connect through two stud 9, the threaded hole on the top surface of locating piece 2 is installed to stud 9's lower extreme, stud 9 passes briquetting I3 and briquetting II 8, the upper end stretches out briquetting II 8 top surfaces, fixes through the nut. Arc-shaped grooves with the same diameter are respectively formed in the top surface of the positioning block 2, the top surface and the bottom surface of the pressing block I3 and the bottom surface of the pressing block II 8, and the arc-shaped groove in the top surface of the positioning block 2 is coaxial with the arc-shaped groove in the bottom surface of the pressing block I3 adjacent to the arc-shaped groove; the arc-shaped grooves on the opposite surfaces of the adjacent pressing blocks I3 are coaxial; the arc-shaped groove on the bottom surface of the pressing block II 8 is coaxial with the arc-shaped groove on the top surface of the pressing block I3 adjacent to the arc-shaped groove. Two springs 7 are sleeved on each stud 9, and the two springs 7 are located between the positioning block 1 and the pressing block I3 adjacent to the positioning block, and between the pressing block II 8 and the pressing block I3 adjacent to the positioning block. If the number of the pressing blocks I3 is multiple, springs 7 are also arranged between the adjacent pressing blocks I3.
The radius of the arc-shaped groove on the top surface of the positioning block 2, the top surface and the bottom surface of the pressing block I3 and the bottom surface of the pressing block II 8 is the same as the radius of the excircle of the workpiece, and the arc-shaped groove is used for clamping the workpiece. And a layer of rubber is arranged on the inner walls of the arc-shaped grooves on the top surface of the positioning block 2, the top surface and the bottom surface of the pressing block I3 and the bottom surface of the pressing block II 8, so that the clamping damage to workpieces can be avoided. The positioning block 2, the pressing block I3, the pressing block II 5 and the bottom plate 1 are all made of aluminum, and the two support plates 6, the threaded pin 5 and the stud bolt 9 are all made of 45 steel.
The both ends face of briquetting I3 on be equipped with a pinhole respectively, be equipped with screw pin 5 in the pinhole, screw pin 5 and pinhole interference fit, screw pin 5 passes through holding screw to be fixed in the pinhole, be equipped with long straight hole 61 corresponding to the screw pin on two supports 6, the screw end of screw pin 5 is located long straight hole 61, through nut 4 and support 6 fixed connection. The middle part of the support plate 6 is also provided with a U-shaped groove I62, the opening of the U-shaped groove I62 is communicated with the long straight hole 61, and a 30-degree chamfer is arranged at the opening.
As shown in FIG. 3, when the invention is used for X, Y axial direction impact vibration test, two support plates 6 and a positioning block 2 are connected by a screw 11 to limit the movement of the positioning block 2. Then, the two support plates and the pressing block I3 are connected through the threaded pin 5 and the nut 4 to fix the pressing block I3, the pressing block II 8 and the positioning block 2, so that a clamping effect is achieved.
As shown in fig. 4, in the Z-axis impact vibration test, the screw 11 is removed, the press block i3 is rotated by 90 degrees around the screw pin 5, the two screw pins 5 are respectively placed in the U-shaped grooves i 62 between the two support plates 6, and the U-shaped grooves i 62 are fixed by tightening the nuts 4 as shown in fig. 5. The edge of the U-shaped groove I62 in the middle of the two support plates 6 is chamfered by 30 degrees, so that the stud can conveniently enter the U-shaped groove I62. Because the impact vibration test is carried out, the workpiece needs to be suspended in the air, and if the support plate is not provided with the U-shaped groove I62, the pressing block I3, the pressing block II 8 and the positioning block 2 only can act on the friction force of the nut and the pressing plate without falling down, and the structure is very unstable. Open U-shaped groove I62 and can restrict briquetting I3 and briquetting II 8 and 2 whereabouts trends of locating piece, reduce the nut pretightning force, this structure effectively reduces the experimental accident rate of shock vibration, and guarantee operator safety uses anchor clamps, and this structure can also alleviate operator intensity of labour in addition.
As shown in figures 3 and 4, the invention is specifically carried out according to the following steps that the middle section of a workpiece is positioned and clamped by the inner arc surfaces of the positioning block 2, the pressing block I3 and the pressing block II 8, then the bolt and the nut connected with the stud are screwed in sequence, and then the impact vibration test can be carried out. After the test is completed, the test is repeated 3 times by sequentially rotating the workpiece by 90 degrees, 180 degrees and 270 degrees (compared with the first test position), so that the test of the impact vibration in the four directions of the X axis and the Y axis is completed under the condition that only the workpiece is rotated. And then, performing a Z-direction impact vibration test, dismounting the bolt, rotating the pressing block I3 by 90 degrees around the threaded pin 5, rotating the positioning block 2 and the pressing block II 8 together, placing the threaded pin 5 in the U-shaped groove I62 in the middle of the two support plates 6, screwing the nut 4 to fix the threaded pin, rotating the workpiece by 180 degrees after the test is completed, performing the test again, and finally completing the impact vibration test of the workpiece in six directions of three axes.

Claims (6)

1. The utility model provides an impact vibration test anchor clamps which characterized by: the device comprises a bottom plate, two support plates, a positioning block, a plurality of pressing blocks I and a plurality of pressing blocks II; the two support plates are fixedly arranged at the two ends of the bottom plate and arranged in parallel, and the positioning block, the pressing block I and the pressing block II are arranged between the two support plates; the positioning block is arranged on the bottom plate, and two ends of the positioning block are connected with the two support plates through screws; a plurality of pressing blocks I are arranged above the positioning block in parallel, and pressing blocks II are arranged above the pressing blocks I; the positioning block, the pressing block I and the pressing block II are connected through a plurality of double-end studs, the lower ends of the double-end studs are installed in threaded holes of the positioning block, and the upper ends of the double-end studs extend out of the top surface of the pressing block II and are fixed through nuts; two ends of a press block I are respectively connected with the two support plates, and after a screw between the positioning block and the support plates is dismounted, the positioning block, the press block I and the press block II can pivot around the connection position of the press block I and the two support plates; arc-shaped grooves with the same diameter are respectively arranged on the top surface of the positioning block, the top surface and the bottom surface of the pressing block I and the bottom surface of the pressing block II, and the arc-shaped groove on the top surface of the positioning block is coaxial with the arc-shaped groove on the bottom surface of the pressing block I adjacent to the positioning block; the arc-shaped grooves on the opposite surfaces of the adjacent pressing blocks I are coaxial; the arc-shaped groove on the bottom surface of the pressing block II is coaxial with the arc-shaped groove on the top surface of the pressing block I adjacent to the arc-shaped groove.
2. The impact vibration test fixture of claim 1, wherein: the positioning block, the pressing block I and the pressing block II are connected through two double-end studs; a plurality of springs are sleeved on each stud and are positioned between the positioning block and the pressing blocks I adjacent to the positioning block, between the adjacent pressing blocks I and between the pressing block II and the pressing blocks I adjacent to the pressing block II.
3. The impact vibration test fixture of claim 1, wherein: two end faces of the pressing block I are respectively provided with a pin hole, a threaded pin is arranged in each pin hole, the threaded pins are in interference fit with the pin holes, the threaded pins are fixed in the pin holes through set screws, long straight holes are formed in the two support plates corresponding to the threaded pins, and threaded ends of the threaded pins are located in the long straight holes and are fixedly connected with the support plates through nuts; the middle part of the support plate is provided with a U-shaped groove I, an opening of the U-shaped groove I is communicated with the long straight hole, and a chamfer is arranged at the opening of the U-shaped groove I.
4. The impact vibration test fixture of claim 3, wherein: the positioning block, the pressing block I, the pressing block II and the bottom plate are all made of aluminum, and the two support plates, the threaded pin and the double-ended stud are all made of 45 steel.
5. The impact vibration test fixture of claim 1, wherein: the two end faces of the positioning block are respectively provided with a blind hole, a threaded sleeve is arranged in the blind hole, and the threaded sleeve is fixed in the blind hole through a set screw; and the two support plates are respectively provided with a U-shaped groove II corresponding to the threaded sleeve, and the screw extends into the U-shaped groove II from the U-shaped groove II and is in threaded connection with the threaded sleeve.
6. The impact vibration test fixture of claim 1, wherein: and a layer of rubber is arranged on the inner wall of the arc-shaped groove on the top surface of the positioning block, the top surface and the bottom surface of the pressing block I and the bottom surface of the pressing block II.
CN201911300440.8A 2019-12-17 2019-12-17 Impact vibration test fixture Pending CN110849567A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911300440.8A CN110849567A (en) 2019-12-17 2019-12-17 Impact vibration test fixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911300440.8A CN110849567A (en) 2019-12-17 2019-12-17 Impact vibration test fixture

Publications (1)

Publication Number Publication Date
CN110849567A true CN110849567A (en) 2020-02-28

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ID=69609603

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911300440.8A Pending CN110849567A (en) 2019-12-17 2019-12-17 Impact vibration test fixture

Country Status (1)

Country Link
CN (1) CN110849567A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116007891A (en) * 2023-03-24 2023-04-25 中国空气动力研究与发展中心设备设计与测试技术研究所 Locking connection device of wind tunnel balance support rod

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116007891A (en) * 2023-03-24 2023-04-25 中国空气动力研究与发展中心设备设计与测试技术研究所 Locking connection device of wind tunnel balance support rod
CN116007891B (en) * 2023-03-24 2023-05-30 中国空气动力研究与发展中心设备设计与测试技术研究所 Locking connection device of wind tunnel balance support rod

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