CN203405377U - Clamp of nondestructive multifunctional steel wire rope tension tester - Google Patents
Clamp of nondestructive multifunctional steel wire rope tension tester Download PDFInfo
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- CN203405377U CN203405377U CN201320488061.8U CN201320488061U CN203405377U CN 203405377 U CN203405377 U CN 203405377U CN 201320488061 U CN201320488061 U CN 201320488061U CN 203405377 U CN203405377 U CN 203405377U
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Abstract
The utility model particularly discloses a clamp of a nondestructive multifunctional steel wire rope tension tester. The clamp of the nondestructive multifunctional steel wire rope tension tester comprises a base, wherein at least one movable clamping jaw driven by an air cylinder, and at least one fixed clamping jaw fixed to the base are installed on the base, a round-tube-shaped S-shaped gap is formed between the movable clamping jaw and the fixed clamping jaw, and a steel wire rope can penetrate through the round-tube-shaped S-shaped gap. According to the clamp of the nondestructive multifunctional steel wire rope tension tester, breakage-free random sampling on-line tension testing of the steel wire rope can be achieved, and an effective guarantee is provided for detecting whether the whole coil of steel wire ropes can be safely used or not; due to the fact that the clamp of the nondestructive multifunctional steel wire rope tension tester can carry out nondestructive clamping under the condition that high tension is borne by a flexible body, the random on-line tension test of the steel wire rope can be carried out, and safety tension testing of any unfolded section of the steel wire rope can be ensured.
Description
Technical field
The utility model relates to a kind of not damaged multifunctional steel wire rope tension grip of testing machine, and this fixture can be realized the not damaged tension test that wire rope maximum load is 800kN.
Background technology
According to GB/T8358-2006 " breaking tensile test of rope method ", the method for chucking of wire rope test specimen is had to four kinds: cover platen press, casting method, direct chucking method and winding method.The above method all adopts sampling Detection method, both on existing whole-root rope basis, intercepts one section, carries out disrumpent feelings tension test.This test is that process of the test prevents whether loosening slippage from appearring in test specimen clamping position, sustain damage and do not explicitly call for for test specimen clamping position for the requirement of two ends clamp body.These class methods are applicable to detection and the examination of new rope, yet for used wire rope, may there is difference in the performance at middle part and fag end position, will be no longer representative, and will bring damaging influence to rope from the middle sampling of restricting from fag end sampling.
Current domestic electric power construction is used a large amount of wire rope, and such rope is for left and right ordinary lay programming structure, stretches after stressed and has anti-turn round function, widespread use in lead wire and earth wire construction under tension stringing.Because such rope environment for use is severe, stressed complexity, on-the-spot use procedure very easily causes yarn, rope silk wear and rupture.Such rope returns and is coiling behind warehouse and deposits, and how to take a kind of rational method to launch wire rope and carries out whole process monitoring, and online random tension test is domestic and international also ready-made testing machine solution.
According to power construction safety work order, Electric Power Construction Enterprises every year need to be to stringing with preventing that turning round wire rope carries out 2 times of safe load tensile tests, to detect such rope, whether can continue safe handling, qualified rear wire rope still can come into operation after testing.Such test, for safety examination, does not belong to destructive test.One of method that constituent parts adopts is at present to use for reference the disrumpent feelings property of wire rope tensile test method, the test of the sampling section of getting.Mostly is in actual applications near fag end sampling, has occurred sampling limitation problem.These class methods have been destroyed the integrality of whole rope simultaneously, and fag end shank is processed and with great difficulty do not brought hidden danger, deviate from mutually with the object of property safety period check.Some units also adopt one section of wire rope of steel wire clamp clamping to carry out tension test, and this kind of method realized online test objective, still, for the wire rope of cheese inside, owing to cannot effectively launching, cause detecting and cannot realize.Steel wire clamp Lack of support simultaneously, does not fully hold tactilely to wire rope surface, process of the test easily causes secondary extrusion to steel wire.
For lineoutofservice signal pull test, be mainly to adopt wire rope unit clamp to carry out in conjunction with tension tester at present, present stage is divided achievement about the research of lineoutofservice signal pull testing machine and fixture thereof obtaining section.
In patent (CN 201120404556.9), disclose a kind of overall breaking force of steel wire rope test and be wound around fixture; This patent is wrapped in the two ends of steel cable on large rope sheave through test fixture, and fag end is penetrated in large rope sheave, utilizes fixture fixed pin to be directly connected with the jaw of common tension tester, implements to stretch.This fixture is just suitable for intercepting one section of wire rope and carries out rupture pull force test, can not realize whole spooling at random the section of getting carry out the test of nondestructive safety on line, and wire rope must be wrapped on rope sheave by whole circle, especially for generous wire-diameter steel rope, test operation is complicated.
In patent (CN 201120541577.5), openly carried out a kind of breaking force of rope test fixture, this patent in process of the test by wirerope-winding in winding groove, by manually screwing bolt, nut compression steel wire rope head, reach the fixedly object of wire rope, and then carry out the rupture pull force test of wire rope.This patent is equally just suitable for intercepting one section of wire rope and carries out rupture pull force test, can not realize whole spooling at random the section of getting carry out the test of nondestructive safety on line, and be wound around and clamp dependence manual operation, efficiency is lower, clamps stable not.
In patent (CN 201210297986.4), a kind of lineoutofservice signal pull grip of testing machine is disclosed, expanding force when this patent is born wire rope sample tensile test by the orienting lug arc-shaped slot on upper and lower fixture, make the wire rope sample fracture in centre position, avoided wire rope broken end to appear at retaining part and make the problem of test failure.This patent is still just suitable for intercepting one section of wire rope and carries out rupture pull force test, is mainly suitable for tensile test micro-, thin shaped steel wire rope.
From current literature retrieval, learn, also to breaking force of rope, test is studied for more domestic scholars and scientific research personnel, has proposed multiple test fixture, and has carried out some improvement in conjunction with flexible body exemplar feature.
In document " improvement of material pull-test machine holder structure ", disclose a kind of method to compression after thin flexible body employing winding and carried out material tensile test, document analysis the structure of tinsel dedicated workholder, rubber " V " type tape gripper and eccentric wheel clamper, and the problem existing for these clampers is improved.The method is only applicable to the material tensile test that load is 10KN, and is the test of the section of getting rupture pull force.
Document " development of horizontal tensile testing machine and wire rope stretching test method are inquired into " has carried out development and the research of wire rope stretching test method of horizontal tensile testing machine for the disrumpent feelings tension test of wire rope, introduced respectively the preparation of casting, winding, gland and direct chucking method wire rope sample and attached pattern.
In sum, at present the domestic tensile test about wire rope is mainly reflected in intercepting termination and carries out off-line tensile test aspect; And for the tensile test method of wire rope, its patent and document achievement also many adopt separately casting methods, winding method, gland method and directly clamp methods carry out.For total length force type wire rope intercepting termination, carry out the true safety case that off-line tensile test can not objective evaluation wire rope, four kinds of fixture test methods that industry standard is recommended are also the off-line testing that is suitable for sampling, and the safety testing larger for pulling force often produces damage to bare terminal end.According to the current lineoutofservice signal pull test fixture of data-searching, only have a simple function in addition.Therefore, a kind of not damaged multifunctional pull test fixture that is suitable for wire rope and attaches of development research, has important engineering significance and theory value.
Utility model content
The purpose of this utility model is exactly for above-mentioned deficiency of the prior art, and a kind of stretching fixture that is applicable to wire rope and attaches is provided.This fixture can be realized the not damaged clamping of wire rope, coordinates tension tester can carry out online tensile test, and can carry out that wire rope connects by the security tensile test of U-shaped ring etc.
The technical solution adopted in the utility model is as follows:
A kind of not damaged multifunctional steel wire rope tension grip of testing machine, comprise a base, at least one moving clamping claw by air cylinder driven is installed on described base and is fixed on the clamp tool jaw on base with at least one, described moving clamping claw and the S type space of determining to form between clamping claw the tubular that supplies steel wire penetrating.
Described clamp tool jaw comprises a thick axle of pier, and a winding wheel is installed on the thick axle of described pier, and there is the circular arc concave groove coordinating with wire rope in described winding wheel cross section.
Described moving fixture cross section integral body is the convex of S type.After moving fixture and determining fixture combination, form the curved space of similar tubular.
Described moving clamping claw is connected with web member I by pin I, and the piston rod of hydraulic cylinder is connected to web member I by two semicircle flanges, screws and goes up, and realizes connecting of piston rod and moving clamping claw.
One side of described base is provided with row's drawing mechanism, comprise connecting link I, connecting link II, described connecting link I one end is connected with base by pin II, and the other end is threaded with adapter sleeve, and described adapter sleeve is connected with connecting link II by pin III, described connecting link II is provided with at least one pull bar being connected with U-shaped ring, described pull bar is sold VI by one end and is connected with connecting link II, and the other end connects a roller, and described roller is connected with U-shaped ring.
The beneficial effects of the utility model are:
(1) research and develop in a creative way a kind of lineoutofservice signal pull test method that wound form is clamped to the combination of peace pushing clamping method, realized wire rope nondestructive tensile test.This fixture has fully absorbed existing winding method and direct chucking method new application, and carries out on this basis organic integration, has formed winding clamping method, has realized the harmless clamping of the large pulling force security of flexible body at thread test.Wherein, winding wheel takes full advantage of increases contact area in effective length, and does not damage the theory of wire rope, and the S type of wire rope is crooked, effectively strengthened holding of wire rope touched to area and length, in identical friction material and snap-in force situation, improved the stiction to wire rope.In the space that wire rope forms at the moving fixture of winding wheel and S type, through repeatedly crooked, produce friction pulley skin-friction effect, friction force progressively decays, and moving fixture horizontal sliding snap-in force is corresponding can reduce, and can effectively reduce the compression damage to wire rope.Be wound around chucking method and realized breakthrough in method with technical, proposed a kind of wire rope to innovation and can't harm pulling force check test method.
(2) can the not damaged based on flexible body clamps, and can realize the online tensile test of not disrumpent feelings grab sample of wire rope, to checking whole spooling use safely, provide effective guarantee.Test shows that this fixture can realize the online tension test of not damaged that wire rope maximum load is 800kN, and is suitable for all kinds of wire rope that Fang Jing is 15-30mm, has ensured that wire rope is at spread falls arbitrarily security tensile test.
(3) band of research and development row draws the comprehensive fixture of function to realize tension tester one tool multi-purpose function.The Duola head unit of row in drawing mechanism can carry out the connect stretching of U-shaped ring of 4 rows simultaneously, and tension test when completing a plurality of U-shaped ring in the situation that of clamper for disassembling has not realized a tool multi-purpose function of tension tester.
Accompanying drawing explanation
Fig. 1 integral body of the present utility model is overlooked mechanism map;
Fig. 2 A-A cut-open view of the present utility model;
Fig. 3 B-B cut-open view of the present utility model;
1 joint bolt in figure, 2 bases, 3 pull bars, 4 hydraulic cylinders, 5 semicircle flanges, 6 screws, 7 web members, 8 pin I, 9 moving clamping claws, 10 winding wheels, the thick axle of 11 pier, 12 draw-bar seat 13 threaded 14 wire rope V-type locating piece 15 pin II, 16 connecting link I, 17 adapter sleeves, 18 pin III, 19 pull bars, 20 pin VI, 21 rollers, 22 connecting link II, 23 U-shaped rings.
Embodiment
The utility model relates to a kind of Special flexible body clamping of winding wheel and directly chucking method combination and tension test multifunctional pull test fixture of U-shaped ring of utilizing, not damaged clamping and cable stretch that this fixture can be realized elongated class flexible body set up the tension test with a plurality of U-shaped rings, for carrying out the random online tension test of wire rope, provide effective guarantee.
Clamp forceps notch portion structure as shown in Figure 1 and Figure 2, it mainly by joint bolt 1, base 2, pull bar 3, hydraulic cylinder 4, two semicircle flanges 5, screw 6, web members 7, sell 8, moving clamping claw 9, winding wheel 10, the thick axle 11 of pier, draw-bar seat 12, attachment pegs 13, wire rope V-type locating piece 14 etc. form.Winding wheel 10 is fixed on base 2 by the thick axle 11 of pier and the threaded identical with attachment pegs 13, the moving clamping claw 9 of S type is connected with web member 7 by pin I8, the piston rod of hydraulic cylinder 4 is connected on web member 7 by two semicircle flanges 5, screw 6, realizes piston rod and moves connecting of clamping claw 9 with S type; Pull bar 3 is connected on two draw-bar seats 12, forms semi-closed state, to improve the rigidity of fixture.There is circular arc matrix in winding wheel cross section as clamp tool jaw, and moving fixture cross section integral body is S curve convex, forms the curved space of similar tubular after moving fixture and stationary fixture combination.When wire rope enters jaw, under the horizontal sliding campaign effect of hydraulic cylinder 4, movable clamp port moves matched moulds, realizes coiling and the clamping that clamps the wire rope of combination.Because jaw consists of one group of winding wheel and S type movable clamp port, wire rope is repeatedly crooked coiling therein, produces friction pulley skin-friction effect, and the method has embodied the winding method of lineoutofservice signal pull test; And movable clamp port clamping steel wire rope under the driving of hydraulic cylinder 4 has embodied the direct chucking method that lineoutofservice signal pull is tested.Because crooked coiling has repeatedly produced larger friction force, in same tensile force situation, the direct clamping of the relative flat mouth of clamping force now will be dwindled greatly.Therefore, integrated winding method and the direct winding chucking method of chucking method, can realize the harmless tensile test of wire rope, and on-the-spot 800KN tensile test has fully proved the validity of the method.This clamp structure can coordinate the expansion of coiling wire rope, cleaning, care device, and the online tensile test of wire rope is carried out in not disrumpent feelings grab sample, realizes the complete monitoring to whole spooling security.
Carry out row's pull-up structure of U-shaped ring safety test as shown in Figure 3, it is mainly comprised of pin II15, connecting link I16, adapter sleeve 17, pin III18, pull bar 19, pin IV20, roller 21 etc.Connecting link 16 is connected with fixture by pin II15, adapter sleeve 17 is connected by screw thread with connecting link I 16, roller 21 is for connecting the roller of tested U-shaped ring 23, it is connected on pull bar 19 by pin 20, pull bar 19 is connected on connecting link II 22, and connecting link II is connected with connecting link I's 16 by pin III18, adapter sleeve 17 realizations.In this row's drawing mechanism, have and on connecting link II 22, be connected with 4 pull heads, each pull head can be realized the connection of the U-shaped ring 23 of a string series connection, four pull heads can be realized the connect stretching of U-shaped ring of 4 rows simultaneously, the fine setting of its 4 tensile elongations can be passed through the threaded adjusting of pull bar 19 ends, tension test when can realize a plurality of U-shaped ring thus.
Claims (5)
1. a not damaged multifunctional steel wire rope tension grip of testing machine, comprise a base, it is characterized in that: at least one moving clamping claw by air cylinder driven is installed on described base and is fixed on the clamp tool jaw on base with at least one, described moving clamping claw and the S type space of determining to form between clamping claw the tubular that supplies steel wire penetrating.
2. fixture as claimed in claim 1, is characterized in that: described clamp tool jaw comprises a thick axle of pier, and a winding wheel is installed on the thick axle of described pier, and there is the circular arc concave groove coordinating with wire rope in described winding wheel cross section.
3. fixture as claimed in claim 1, is characterized in that: described moving fixture cross section integral body is the convex of S type.
4. fixture as claimed in claim 1, is characterized in that: described moving clamping claw is connected with web member I by pin I, and the piston rod of hydraulic cylinder is connected on web member I by two semicircle flanges, screws.
5. fixture as claimed in claim 1, it is characterized in that: a side of described base is provided with row's drawing mechanism, comprise connecting link I, connecting link II, described connecting link I one end is connected with base by pin II, the other end is threaded with adapter sleeve, described adapter sleeve is connected with connecting link II by pin III, described connecting link II is provided with at least one pull bar being connected with U-shaped ring, described pull bar is sold VI by one end and is connected with connecting link II, the other end connects a roller, and described roller is connected with U-shaped ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320488061.8U CN203405377U (en) | 2013-08-09 | 2013-08-09 | Clamp of nondestructive multifunctional steel wire rope tension tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320488061.8U CN203405377U (en) | 2013-08-09 | 2013-08-09 | Clamp of nondestructive multifunctional steel wire rope tension tester |
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| Publication Number | Publication Date |
|---|---|
| CN203405377U true CN203405377U (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320488061.8U Expired - Fee Related CN203405377U (en) | 2013-08-09 | 2013-08-09 | Clamp of nondestructive multifunctional steel wire rope tension tester |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411826A (en) * | 2013-08-09 | 2013-11-27 | 济南大学 | Zero damage multifunctional steel wire rope tension tester fixture |
| CN108398324A (en) * | 2018-03-03 | 2018-08-14 | 青岛铭润机械有限公司 | A kind of hoisting chain pull force calculation machine |
| US10816420B1 (en) | 2018-04-05 | 2020-10-27 | United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Non-invasive tension-measurement devices and methods |
-
2013
- 2013-08-09 CN CN201320488061.8U patent/CN203405377U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411826A (en) * | 2013-08-09 | 2013-11-27 | 济南大学 | Zero damage multifunctional steel wire rope tension tester fixture |
| CN108398324A (en) * | 2018-03-03 | 2018-08-14 | 青岛铭润机械有限公司 | A kind of hoisting chain pull force calculation machine |
| US10816420B1 (en) | 2018-04-05 | 2020-10-27 | United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Non-invasive tension-measurement devices and methods |
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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: 20140122 Termination date: 20140809 |
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| EXPY | Termination of patent right or utility model |