CN100489484C - Sheet material compression clamp - Google Patents
Sheet material compression clamp Download PDFInfo
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- CN100489484C CN100489484C CNB2006100101718A CN200610010171A CN100489484C CN 100489484 C CN100489484 C CN 100489484C CN B2006100101718 A CNB2006100101718 A CN B2006100101718A CN 200610010171 A CN200610010171 A CN 200610010171A CN 100489484 C CN100489484 C CN 100489484C
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- fixed
- clamp body
- clamping device
- lower clamp
- half clamping
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Abstract
The disclosed compression clamp for sheet-form material comprises: a fixing plate (4) fixed on upper/lower clamp body (7), a pad plate (1) paralleled to the inclined plane (21) of trapezoidal slot (20) in (7), a sphenoid slider (15) arranged in (20), a guide block (5) with one end fixed in the guide slot (23) of (15) and another end slide connected to (23). This invention frees to clamp self weight, and has high precision and efficiency.
Description
Technical field
The present invention relates to a kind of anchor clamps.
Background technology
In existing material compression clamp, in the majority at the anchor clamps of block test specimen.Less at the anchor clamps that the sheet test specimen is adopted, and the sheet piece fixture mostly is the split reassembling type, two parts (symmetrical structure is called upper and lower anchor clamps again) about anchor clamps are divided into, go up in (descending) anchor clamps, have square notch and be coupled with four wedges (positive and negative be combined into square).When carrying out compression test, the sheet test specimen folded up in two wedges have rhombus mouth face side, be positioned over then that imposed load carries out the test specimen compression test on the universal testing machine platen.Exist following shortcoming with not enough in loading and unloading test specimen process: 1, test specimen centering is installed and is applied the pretightning force difficulty: in the installation process of test specimen, generally apply pretightning force in the mode that impacts wedge, and the pretightning force of test specimen both sides can't guarantee evenly, thereby also influence test specimen clamping centering; 2, the less test specimen test difficulty of thickness: because last anchor clamps own wt, the test specimen less for thickness causes bending easily, thereby causes test data inaccurate; 3, test specimen dismounting difficulty: after finishing compression verification, dismantle test specimen in the mode of hitting wedge, removal efficiency is low.
Summary of the invention
The objective of the invention is to have the installation of sheet piece fixture centering now and apply pretightning force, less test specimen test and the difficult problem of test specimen dismounting of thickness for solving, a kind of sheet material compression clamp is provided, the present invention have centering install with pretightning force apply evenly, be not subjected to the anchor clamps own wt influence, for the less test specimen of thickness can accurately test, the test specimen dismounting is easy, testing efficiency and the high characteristics of precision.The present invention is by last, lower clamp body 7, nut 8, orienting lug 5, left side pretightning force device, right side pretightning force device, a left side half clamping device and right half clamping device are formed, left side pretightning force device and right side pretightning force device are fixed on symmetrically, on the left and right sides of lower clamp body 7 outsides, a left side half clamping device and right half clamping device are arranged on symmetrically, in the lower clamp body 7, nut 8 is arranged on, the top of lower clamp body 7, left side pretightning force device and right side pretightning force device are respectively by back up pad 9, last connector 10, about revolve screw rod 11, left and right sides spin nut 12, following connector 13, lever pressing plate 14 and bearing pin 16 are formed, the upper end of revolving screw rod 11 about last connector 10 is fixed on, the lower end of revolving screw rod 11 about following connector 13 is fixed on, left and right sides spin nut 12 with about revolve screw rod 11 and screw, bearing pin 16 is fixed on, downside in the lower clamp body 7, one end of back up pad 9 is fixed on, on the outer wall of lower clamp body 7, the other end of back up pad 9 and last connector 10 are hinged, the middle part of lever pressing plate 14 and bearing pin 16 are rotationally connected, one end of lever pressing plate 14 and following connector 13 are hinged, a left side half clamping device and right half clamping device are respectively by upper pin 3, wedge block 15, lower bearing pin 17, two extension springs 6, backing plate 1 and fixed head 4 are formed, on, bottom in the lower clamp body 7 has dovetail groove 20, upper pin 3 is fixed on, on the lower clamp body 7, one side facet of backing plate 1 is fixed on the fixed head 4, fixed head 4 is fixed on, on the lower clamp body 7, backing plate 1 is with last, the inclined-plane 21 of the dovetail groove 20 in the lower clamp body 7 be arranged in parallel, wedge block 15 is arranged on, in the dovetail groove 20 of lower clamp body 7, big of one side of backing plate 1 and last, the inclined-plane 21 of the dovetail groove 20 in the lower clamp body 7 is connected, the inclined-plane 22 of wedge block 15 is slidingly connected with the big face of opposite side of backing plate 1, lower bearing pin 17 is fixed in the through hole 19 on the wedge block 15, the upper end of two extension springs 6 is separately fixed on the two ends of upper pin 3, the other end of two extension springs 6 is separately fixed on the two ends of lower bearing pin 17, the back side of wedge block 15 has gathering sill 23, one end of orienting lug 5 is fixed in the gathering sill 23 of wedge block 15 of left half clamping device or right half clamping device, the other end of orienting lug 5 is slidingly connected with the gathering sill 23 of the wedge block 15 of opposite side half clamping device of symmetry, and the other end of lever pressing plate 14 flexibly connects mutually with the lower end of wedge block 15.The invention has the advantages that: one, solved the centering installation and applied unequal difficulty with pretightning force; Two, be not subjected to the influence of anchor clamps own wt, still can accurately measure for the test specimen that thickness is less; Three, the test specimen dismounting is easy, testing efficiency and precision height.Main performance index of the present invention: one, the clamping thickness that can apply pretightning force is 3mm～9mm (GB3856-83 test specimen clamping thickness: 4～5mm), and can change clamping thickness by replacing the wedge block group; Two, compression clamp of the present invention is compared with other compression clamp (as the Celanese anchor clamps), and the weight of anchor clamps itself is not applied on the test specimen, so experimental result is not subjected to the influence of anchor clamps own wt; Three, the compression specimens gauge length is generally 12.7mm, use anchor clamps of the present invention and can the test specimen of gauge length 12.7mm-30mm be loaded (as D braided composites), like this, enough gauge lengths can satisfy simultaneously test specimen is carried out other test analysis (as: pasting the acoustic emission probe in order to monitor test specimen fail in compression process in the gauge length section of test specimen).
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present invention, and Fig. 2 is the structural representation of left half clamping device and right half clamping device, and Fig. 3 is the A-A cut-open view of Fig. 1, and Fig. 4 and Fig. 5 are the structural representations of wedge block 15 in left half clamping device and right half clamping device.
Embodiment
Embodiment one: (referring to the present embodiment of Fig. 1～Fig. 5) by last, lower clamp body 7, nut 8, orienting lug 5, left side pretightning force device, right side pretightning force device, a left side half clamping device and right half clamping device are formed, left side pretightning force device and right side pretightning force device are fixed on symmetrically, on the left and right sides of lower clamp body 7 outsides, a left side half clamping device and right half clamping device are arranged on symmetrically, in the lower clamp body 7, nut 8 is arranged on, the top of lower clamp body 7, left side pretightning force device and right side pretightning force device are respectively by back up pad 9, last connector 10, about revolve screw rod 11, left and right sides spin nut 12, following connector 13, lever pressing plate 14 and bearing pin 16 are formed, the upper end of revolving screw rod 11 about last connector 10 is fixed on, the lower end of revolving screw rod 11 about following connector 13 is fixed on, left and right sides spin nut 12 with about revolve screw rod 11 and screw, bearing pin 16 is fixed on, downside in the lower clamp body 7, one end of back up pad 9 is fixed on, on the outer wall of lower clamp body 7, the other end of back up pad 9 and last connector 10 are hinged, the middle part of lever pressing plate 14 and bearing pin 16 are rotationally connected, one end of lever pressing plate 14 and following connector 13 are hinged, a left side half clamping device and right half clamping device are respectively by upper pin 3, wedge block 15, lower bearing pin 17, two extension springs 6, backing plate 1 and fixed head 4 are formed, on, bottom in the lower clamp body 7 has dovetail groove 20, upper pin 3 is fixed on, on the lower clamp body 7, one side facet of backing plate 1 is fixed on the fixed head 4, fixed head 4 is fixed on, on the lower clamp body 7, backing plate 1 is with last, the inclined-plane 21 of the dovetail groove 20 in the lower clamp body 7 be arranged in parallel, wedge block 15 is arranged on, in the dovetail groove 20 of lower clamp body 7, big of one side of backing plate 1 and last, the inclined-plane 21 of the dovetail groove 20 in the lower clamp body 7 is connected, the inclined-plane 22 of wedge block 15 is slidingly connected with the big face of opposite side of backing plate 1, lower bearing pin 17 is fixed in the through hole 19 on the wedge block 15, the upper end of two extension springs 6 is separately fixed on the two ends of upper pin 3, the other end of two extension springs 6 is separately fixed on the two ends of lower bearing pin 17, the back side of wedge block 15 has gathering sill 23, one end of orienting lug 5 is fixed in the gathering sill 23 of wedge block 15 of left half clamping device or right half clamping device, the other end of orienting lug 5 is slidingly connected with the gathering sill 23 of the wedge block 15 of opposite side half clamping device of symmetry, and the other end of lever pressing plate 14 flexibly connects mutually with the lower end of wedge block 15.
Embodiment two: (difference referring to present embodiment of Fig. 3～Fig. 5) and embodiment one is, is provided with serrate concavo-convex 18 on the surface of contact of two wedge blocks 15 in a left side half clamping device and right half clamping device.Other composition is identical with embodiment one with annexation.It is concavo-convex 18 to be provided with serrate on the surface of contact of two wedge blocks 15, is make the flaky material clamping more firm, and the data of test are more accurate.
Principle of work: utilize the compression experiment of the self-lock mechanism realization of wedge block to the sheet test specimen.One, under normal condition, wedge block is because the effect of extension spring is made zero the gap between the wedge block group.Two, orienting lug makes the synchronized movement of two wedge blocks.During three, clamping sheet test specimen, the ambilateral left and right sides of first adjustable clamp spin nut makes wedge block group gap can reach maximum, utilizes the pulling force clamping test pieces of extension spring.Four, the synchronous ambilateral left and right sides of rotating clamp spin nut utilizes lever principle extruding wedge block, bears even pretightning force to guarantee the test specimen both sides.Five, apply compressive load, the pretightning force that acts on test specimen sandwich part makes friction force increase between test specimen retained part and wedge block, slippage does not take place in test specimen, and the self-lock mechanism of utilizing wedge block evenly is applied to the retained part of test specimen to compressive load, guarantees the accurate measurement of compression experiment.Six, after experiment finished, the ambilateral left and right sides of adjustable clamp spin nut made the wedge block gap can reach maximum, is convenient to dismantle test specimen.
Claims (2)
1, a kind of sheet material compression clamp, it is by last, lower clamp body (7), nut (8), orienting lug (5), left side pretightning force device, right side pretightning force device, a left side half clamping device and right half clamping device are formed, left side pretightning force device and right side pretightning force device are fixed on symmetrically, on the left and right sides of lower clamp body (7) outside, a left side half clamping device and right half clamping device are arranged on symmetrically, in the lower clamp body (7), nut (8) is arranged on, the top of lower clamp body (7), it is characterized in that left side pretightning force device and right side pretightning force device are respectively by back up pad (9), last connector (10), about revolve screw rod (11), left and right sides spin nut (12), following connector (13), lever pressing plate (14) and bearing pin (16) are formed, about being fixed on, last connector (10) revolves the upper end of screw rod (11), about being fixed on, following connector (13) revolves the lower end of screw rod (11), left and right sides spin nut (12) with about revolve screw rod (11) and screw, bearing pin (16) is fixed on, downside in the lower clamp body (7), one end of back up pad (9) is fixed on, on the outer wall of lower clamp body (7), the other end of back up pad (9) and last connector (10) are hinged, the middle part of lever pressing plate (14) and bearing pin (16) are rotationally connected, one end of lever pressing plate (14) is hinged with following connector (13), a left side half clamping device and right half clamping device are respectively by upper pin (3), wedge block (15), lower bearing pin (17), two extension springs (6), backing plate (1) and fixed head (4) are formed, on, bottom in the lower clamp body (7) has dovetail groove (20), upper pin (3) is fixed on, on the lower clamp body (7), one side facet of backing plate (1) is fixed on the fixed head (4), fixed head (4) is fixed on, on the lower clamp body (7), backing plate (1) is with last, the inclined-plane (21) of the dovetail groove (20) in the lower clamp body (7) be arranged in parallel, wedge block (15) is arranged on, in the dovetail groove (20) of lower clamp body (7), big of one side of backing plate (1) and last, the inclined-plane (21) of the dovetail groove (20) in the lower clamp body (7) is connected, the inclined-plane (22) of wedge block (15) is slidingly connected with the big face of opposite side of backing plate (1), lower bearing pin (17) is fixed in the through hole (19) on the wedge block (15), the upper end of two extension springs (6) is separately fixed on the two ends of upper pin (3), the other end of two extension springs (6) is separately fixed on the two ends of lower bearing pin (17), the back side of wedge block (15) has gathering sill (23), one end of orienting lug (5) is fixed in the gathering sill (23) of wedge block (15) of left half clamping device or right half clamping device, the other end of orienting lug (5) is slidingly connected with the gathering sill (23) of the wedge block (15) of opposite side half clamping device of symmetry, and the other end of lever pressing plate (14) flexibly connects mutually with the lower end of wedge block (15).
2, a kind of sheet material compression clamp according to claim 1 is characterized in that being provided with serrate concavo-convex (18) on the surface of contact of two wedge blocks (15) in a left side half clamping device and right half clamping device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100101718A CN100489484C (en) | 2006-06-15 | 2006-06-15 | Sheet material compression clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100101718A CN100489484C (en) | 2006-06-15 | 2006-06-15 | Sheet material compression clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1865904A CN1865904A (en) | 2006-11-22 |
| CN100489484C true CN100489484C (en) | 2009-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100101718A Expired - Fee Related CN100489484C (en) | 2006-06-15 | 2006-06-15 | Sheet material compression clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100489484C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095647B (en) * | 2010-11-15 | 2013-02-06 | 西安交通大学 | Device for testing mechanical properties of thin sheet under simple shear loading |
| CN103760017A (en) * | 2014-02-18 | 2014-04-30 | 北京工业大学 | Carbon fiber reinforced composite laminate compression test clamp and test method using same |
| CN107870178A (en) * | 2017-10-27 | 2018-04-03 | 天津建仪机械设备检测有限公司 | Quick conductive coefficient determination instrument |
| CN107941607A (en) * | 2017-12-26 | 2018-04-20 | 中国航发四川燃气涡轮研究院 | Suitable for the clamping device of big rigidity high-pressure turbine blade high-cycle fatigue test |
| CN114088514B (en) * | 2021-11-22 | 2023-12-29 | 中铁十七局集团第一工程有限公司 | Clamp for concrete axial tensile test |
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2006
- 2006-06-15 CN CNB2006100101718A patent/CN100489484C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1865904A (en) | 2006-11-22 |
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Granted publication date: 20090520 Termination date: 20100615 |