CN103698207A - Hydraulic clamp for wire rod torsion testing machine - Google Patents
Hydraulic clamp for wire rod torsion testing machine Download PDFInfo
- Publication number
- CN103698207A CN103698207A CN201310730605.1A CN201310730605A CN103698207A CN 103698207 A CN103698207 A CN 103698207A CN 201310730605 A CN201310730605 A CN 201310730605A CN 103698207 A CN103698207 A CN 103698207A
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- retaining sleeve
- transmission shaft
- clamping
- wedge block
- rod
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Abstract
The invention discloses a hydraulic clamp for a wire rod torsion testing machine, and relates to testing machine hydraulic clamps. The hydraulic clamp comprises a single-piston type double-rod hydraulic cylinder and a transmission shaft, wherein an axially through mounting cavity is formed in a piston rod of the double-rod hydraulic cylinder; a clamping sleeve is connected with the front side of the transmission shaft through a sliding key; the clamping sleeve is axially and fixedly mounted in the mounting cavity through a bearing shaft; at least two mutually symmetric inclined clamping slopes are arranged inside the front side of the clamping sleeve; wedge-shaped sliding blocks are arranged on and matched with the clamping slopes; wire rod clamping cushion blocks are arranged on the opposite sides of the wedge-shaped sliding blocks; the wedge-shaped sliding blocks can be axially fixed and connected to the front end part of the transmission shaft in a radial sliding manner. Through the adoption of the hydraulic clamp, a rotary torsion test is achieved, and meanwhile, the clamp can sustainably provide hydraulic clamping force, and has the advantages of low operation strength, high efficiency, low possibility of sliding, and accurate test data.
Description
Technical field
The present invention relates to testing machine hydraulically operated fixture, say in detail it is that a kind of manipulation strength is low, efficiency is high, is difficult for skidding the accurate wire torque tester hydraulically operated fixture of test figure.
Background technology
We know, wire torque tester is mainly used in measuring metal wire rod wire rope etc. and in unidirectional bidirectional torsion, bears the ability of plastic yield, at present, the fixture that on market, wire torque tester uses is grabbed chuck etc. for the artificial clamping of mechanical type as three, process of the test installation testing wire rod needs repeatedly manually to clamp, manipulation strength is large, efficiency is low, cannot continue to provide clamping force, for high rigidity wire sample, often occur that holding force is inadequate, skidding, measurement data is inaccurate, experimental result error is large.
Summary of the invention
The object of the invention is to solve above-mentioned the deficiencies in the prior art, provide a kind of manipulation strength low, efficiency is high, is difficult for skidding the accurate wire torque tester hydraulically operated fixture of test figure.
The present invention solves the technical scheme that above-mentioned the deficiencies in the prior art adopt:
A kind of wire torque tester hydraulically operated fixture, it is characterized in that comprising the two outlet-rod hydraulic cylinders of single piston type and transmission shaft, in the piston rod of two outlet-rod hydraulic cylinders, be provided with the installation cavity of axial perforation, transmission shaft front side is connected with retaining sleeve through feather key, retaining sleeve is in bearing is axially fixed in installation cavity, retaining sleeve front interior is provided with the clamping ramps of at least two symmetrical inclinations, and clamping ramps is provided with the wedge block being mated, and wedge block opposite side is provided with wire rod clamping cushion block; The leading section that is connected to transmission shaft of the axial restraint that wedge block can radially slide.
Wedge block rear side described in the present invention is provided with L shaped arm-tie, and the upper surface of the longitudinal side arm of L shaped arm-tie is connected with wedge block, and the horizontal side arm warp beam of L shaped arm-tie is axially connected to transmission shaft front end to stop screw.The downside of the nut of the horizontal side arm of L shaped arm-tie and axial limiting screw and transmission shaft front end face clearance fit, that realizes that L shaped arm-tie can radially slide along transmission shaft is axially fixed in transmission shaft front end.
In installation cavity described in the present invention, be provided with annular bearing positioning convex, before and after bearing positioning convex, both sides are respectively equipped with thrust bearing, and retaining sleeve middle part is provided with the ring of working as matching with forward thrust bearing, and retaining sleeve rear end is provided with the platen matching with back pressure bearing; Between retaining sleeve front portion and installation cavity inwall, be provided with deep groove ball bearing, deep groove ball bearing front side is provided with the gland being connected with piston rod.
The retaining sleeve inwall of the clamping ramps rearward end described in the present invention is provided with buffering process cavity.
Clamping ramps both sides described in the present invention are provided with gathering sill, and wedge block is provided with the slide protrusion matching with gathering sill.
Wedge block front end described in the present invention is provided with the block for preventing that wire rod clamping cushion block from deviating from.
The present invention in use, is connected transmission shaft with the speed reducer output shaft of torsion testing machine, the front and back inlet of the two outlet-rod hydraulic cylinders of single piston type is connected with hydraulic power source, the worktable state of cylinder barrel and torsion testing machine calmly.Sample is placed in to wire rod gripper pad interblock, and hydraulic oil enters the ante-chamber of cylinder tube, promotes piston and moves backward, piston rod drives retaining sleeve together to move backward, clamping ramps presses wedge block along retaining sleeve radial motion, and wire rod gripper pad interblock distance is dwindled, and fixture jaw closure clamps sample; In torsion test process, hydraulic power source continues voltage supply, guarantee that piston rod is with respect to the pressure of the lasting slippage of retaining sleeve, transmission shaft rotation, is connected and is driven the together rotation such as retaining sleeve, wedge block by key, retaining sleeve, by the bearing of piston rod inside, has been realized the relative rotation with piston rod; Thereby realized limit rotation and loaded the lasting clamping in limit.The invention solves the problem that mechanical clips exists, realize when being rotated twisting test, the sustainable fixture that hydraulic clamp power is provided, has manipulation strength low, and efficiency is high, is difficult for skidding the accurate advantage of test figure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A cut-open view of Fig. 1.
Fig. 3 is the vertical view of Fig. 1.
Embodiment
As Fig. 1, 2, wire torque tester hydraulically operated fixture shown in 3, comprise the two outlet-rod hydraulic cylinders of single piston type and transmission shaft, in the piston rod 1 of two outlet-rod hydraulic cylinders, be provided with the installation cavity of axial perforation, transmission shaft 15 front sides are connected with retaining sleeve 5 through feather key, retaining sleeve 5 can endwisely slip on transmission shaft, retaining sleeve is in bearing is axially fixed in installation cavity, as can be seen from Figure 2, in installation cavity, be provided with annular bearing positioning convex, before and after bearing positioning convex, both sides are respectively equipped with thrust bearing 4, 3, retaining sleeve middle part is provided with the ring of working as matching with forward thrust bearing 4, retaining sleeve rear end is provided with the platen 2 matching with back pressure bearing 3, platen 2 is fixedly connected with through bolt with retaining sleeve rear end, between retaining sleeve front portion and installation cavity inwall, be provided with deep groove ball bearing 11, deep groove ball bearing 11 front sides are provided with the gland 8 being connected with piston rod.Retaining sleeve and piston rod axial restraint, can relatively rotate.Retaining sleeve front interior is provided with at least two and take the clamping ramps that retaining sleeve axis is the symmetrical inclination of center line, and clamping ramps and retaining sleeve axis are 10-30 degree angle.Clamping ramps be provided be mated can relative sliding wedge block 9, wedge block 9 opposite sides are provided with wire rod clamping cushion block 16; Wedge block and wire rod add to be held cushion block front end and is provided with the block 10 for preventing that wire rod clamping cushion block from deviating from.The leading section that is connected to transmission shaft of the axial restraint that wedge block can radially slide, as can be seen from the figure, wedge block 9 rear sides are provided with L shaped arm-tie 6, the upper surface of L shaped arm-tie 6 longitudinal side arms is connected with wedge block rear end face, and the horizontal side arm warp beam of L shaped arm-tie is axially connected to transmission shaft 15 front ends to stop screw 7; The downside of the nut of the horizontal side arm of L shaped arm-tie and axial limiting screw 7 and transmission shaft front end face clearance fit, that realizes that L shaped arm-tie can radially slide along transmission shaft is axially fixed in transmission shaft front end.In retaining sleeve, clamping ramps rear portion is provided with buffering process cavity, is convenient to the motion of assembling and wedge block and L shaped arm-tie.
The two outlet-rod hydraulic cylinders of single piston type described in the present invention comprise cylinder barrel 13, piston, piston rod 1, front end end cover 12 and rear end cap 14, piston rod runs through cylinder barrel 13 and stretches out in the both sides, front and back of cylinder barrel, piston is located at the piston rod middle part in cylinder barrel, before and after piston, on the cylinder barrel of both sides, is respectively equipped with front inlet and rear inlet; Front end end cover 12 and rear end cap 14 are located at respectively cylinder barrel 13 rear and front ends.The cylinder barrel of the two outlet-rod hydraulic cylinders of single piston type is provided with fixed support, is conveniently fixed on the worktable of torsion testing machine.
Clamping ramps both sides described in the present invention are provided with gathering sill, and wedge block is provided with the slide protrusion matching with gathering sill, can play guiding, spacing effect to wedge block.
The present invention in use, is connected transmission shaft with the speed reducer output shaft of torsion testing machine, the front and back inlet of the two outlet-rod hydraulic cylinders of single piston type is connected with hydraulic power source, the worktable state of cylinder barrel and torsion testing machine calmly.Sample is placed in to wire rod gripper pad interblock, and hydraulic oil enters the ante-chamber of cylinder tube, promotes piston and moves backward, piston rod drives retaining sleeve together to move backward, clamping ramps presses wedge block along retaining sleeve radial motion, and wire rod gripper pad interblock distance is dwindled, and fixture jaw closure clamps sample; In torsion test process, hydraulic power source continues voltage supply, guarantee that piston rod is with respect to the pressure of the lasting slippage of retaining sleeve, transmission shaft rotation, is connected and is driven the together rotation such as retaining sleeve, wedge block by key, retaining sleeve, by the bearing of piston rod inside, has been realized the relative rotation with piston rod; Thereby realized limit rotation and loaded the lasting clamping in limit.The invention solves the problem that mechanical clips exists, realize when being rotated twisting test, the sustainable fixture that hydraulic clamp power is provided, has manipulation strength low, and efficiency is high, is difficult for skidding the accurate advantage of test figure.
Claims (6)
1. a wire torque tester hydraulically operated fixture, it is characterized in that comprising the two outlet-rod hydraulic cylinders of single piston type and transmission shaft, in the piston rod of two outlet-rod hydraulic cylinders, be provided with the installation cavity of axial perforation, transmission shaft front side is connected with retaining sleeve through feather key, retaining sleeve is in bearing is axially fixed in installation cavity, retaining sleeve front interior is provided with the clamping ramps of at least two symmetrical inclinations, and clamping ramps is provided with the wedge block being mated, and wedge block opposite side is provided with wire rod clamping cushion block; The leading section that is connected to transmission shaft of the axial restraint that wedge block can radially slide.
2. wire torque tester hydraulically operated fixture according to claim 1, it is characterized in that described wedge block rear side is provided with L shaped arm-tie, the upper surface of the longitudinal side arm of L shaped arm-tie is connected with wedge block, and the horizontal side arm warp beam of L shaped arm-tie is axially connected to transmission shaft front end to stop screw.
3. wire torque tester hydraulically operated fixture according to claim 1, it is characterized in that being provided with annular bearing positioning convex in described installation cavity, before and after bearing positioning convex, both sides are respectively equipped with thrust bearing, retaining sleeve middle part is provided with the ring of working as matching with forward thrust bearing, and retaining sleeve rear end is provided with the platen matching with back pressure bearing; Between retaining sleeve front portion and installation cavity inwall, be provided with deep groove ball bearing, deep groove ball bearing front side is provided with the gland being connected with piston rod.
4. wire torque tester hydraulically operated fixture according to claim 2, is characterized in that the retaining sleeve inwall of described clamping ramps rearward end is provided with buffering process cavity.
5. wire torque tester hydraulically operated fixture according to claim 4, is characterized in that described clamping ramps both sides are provided with gathering sill, and wedge block is provided with the slide protrusion matching with gathering sill.
6. wire torque tester hydraulically operated fixture according to claim 5, is characterized in that described wedge block front end is provided with the block for preventing that wire rod clamping cushion block from deviating from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310730605.1A CN103698207B (en) | 2013-12-24 | 2013-12-24 | Wire torque tester hydraulically operated fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310730605.1A CN103698207B (en) | 2013-12-24 | 2013-12-24 | Wire torque tester hydraulically operated fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103698207A true CN103698207A (en) | 2014-04-02 |
| CN103698207B CN103698207B (en) | 2017-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310730605.1A Expired - Fee Related CN103698207B (en) | 2013-12-24 | 2013-12-24 | Wire torque tester hydraulically operated fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103698207B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913373A (en) * | 2014-04-14 | 2014-07-09 | 吉林大学 | Tension-torsion composite clamp under multi-physics coupling condition |
| CN104089815A (en) * | 2014-06-10 | 2014-10-08 | 吉林大学 | Clamp used for test piece sample in function material microscopic performance in-situ testing |
| CN104330302A (en) * | 2014-10-11 | 2015-02-04 | 无锡鑫宏业特塑线缆有限公司 | Drawing force test jig |
| CN106124309A (en) * | 2016-08-24 | 2016-11-16 | 镇江荣德新能源科技有限公司 | A kind of steel wire torsional strength detection fixture |
| CN107340180A (en) * | 2017-07-06 | 2017-11-10 | 杭州应敏科技有限公司 | Twisted wire lossless clamping device automatically |
| CN109307590A (en) * | 2018-07-09 | 2019-02-05 | 长江大学 | A kind of downhole tool test combinations fixture applying torque |
| CN114324032A (en) * | 2021-12-20 | 2022-04-12 | 中机试验装备股份有限公司 | Be used for high temperature low cycle fatigue test anchor clamps |
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| DE3333141A1 (en) * | 1983-09-14 | 1985-05-02 | Georg 5810 Witten Simon | QUICK RELEASE |
| DE4330738A1 (en) * | 1993-09-10 | 1995-03-16 | Main Tauber Maschinenbau Gmbh | Adjustable device for hydraulic clamping sleeves |
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-
2013
- 2013-12-24 CN CN201310730605.1A patent/CN103698207B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3333141A1 (en) * | 1983-09-14 | 1985-05-02 | Georg 5810 Witten Simon | QUICK RELEASE |
| DE4330738A1 (en) * | 1993-09-10 | 1995-03-16 | Main Tauber Maschinenbau Gmbh | Adjustable device for hydraulic clamping sleeves |
| CN2748203Y (en) * | 2004-12-18 | 2005-12-28 | 高长泉 | Hydraulic clamp of lathe |
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| 丁涛: "扭转试验机用液压夹具的开发", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913373A (en) * | 2014-04-14 | 2014-07-09 | 吉林大学 | Tension-torsion composite clamp under multi-physics coupling condition |
| CN103913373B (en) * | 2014-04-14 | 2016-08-17 | 吉林大学 | Can be used for the tension-torsion composite fixture under multiple physical field coupling condition |
| CN104089815A (en) * | 2014-06-10 | 2014-10-08 | 吉林大学 | Clamp used for test piece sample in function material microscopic performance in-situ testing |
| CN104089815B (en) * | 2014-06-10 | 2016-07-13 | 吉林大学 | The fixture of test specimen sample in functional material micro-property in-situ test |
| CN104330302A (en) * | 2014-10-11 | 2015-02-04 | 无锡鑫宏业特塑线缆有限公司 | Drawing force test jig |
| CN106124309A (en) * | 2016-08-24 | 2016-11-16 | 镇江荣德新能源科技有限公司 | A kind of steel wire torsional strength detection fixture |
| CN107340180A (en) * | 2017-07-06 | 2017-11-10 | 杭州应敏科技有限公司 | Twisted wire lossless clamping device automatically |
| CN109307590A (en) * | 2018-07-09 | 2019-02-05 | 长江大学 | A kind of downhole tool test combinations fixture applying torque |
| CN114324032A (en) * | 2021-12-20 | 2022-04-12 | 中机试验装备股份有限公司 | Be used for high temperature low cycle fatigue test anchor clamps |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103698207B (en) | 2017-11-07 |
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Granted publication date: 20171107 Termination date: 20171224 |