CN106872264B - Fiber rope tensile test clamp - Google Patents
Fiber rope tensile test clamp Download PDFInfo
- Publication number
- CN106872264B CN106872264B CN201710231669.5A CN201710231669A CN106872264B CN 106872264 B CN106872264 B CN 106872264B CN 201710231669 A CN201710231669 A CN 201710231669A CN 106872264 B CN106872264 B CN 106872264B
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- Prior art keywords
- wedge
- eccentric wheel
- fiber rope
- block
- shaped
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
Abstract
The invention relates to the technical field of fiber rope detection equipment, and relates to a fiber rope tension test clamp which comprises a clamp seat, wherein a wedge-shaped opening is formed in the clamp seat, a wedge-shaped clamping block is slidably arranged in the wedge-shaped opening, a slot for clamping a fiber rope is formed in the wedge-shaped clamping block, an eccentric wheel is arranged on the clamp seat and can be rotatably arranged, the fiber rope can be fixed on the eccentric wheel and drives the eccentric wheel to rotate, the eccentric wheel is close to the larger end of the wedge-shaped opening, and the wedge-shaped clamping block can move towards the smaller end of the wedge-shaped opening by rotating the eccentric wheel. Before the test, the fiber rope is fixed on the eccentric wheel, the fiber rope is clamped by the wedge-shaped clamping block, the temperature is increased in the process of increasing the pulling force, the fiber rope is heated and deformed, the fiber rope and the slotting produce relative sliding, the eccentric wheel is driven to rotate, and the wedge-shaped clamping block is pushed to move towards the smaller end of the wedge-shaped opening, so that the fiber rope is clamped again. The invention is used for the fiber rope tension test and is more reliable and not easy to fail.
Description
Technical Field
The invention relates to the technical field of fiber rope detection equipment, in particular to a fiber rope tension test clamp.
Background
In the prior art, after the fiber rope is woven, the fiber rope is sleeved in a cylinder for tension test, and the fiber rope is woven with time and labor. Patent CZ201310294996.4 discloses a wire clamp comprising: the clamp shell is provided with an inverted triangle accommodating space; the positioning blocks are arranged in the accommodating space in a sliding manner and comprise a first positioning block and a second positioning block, wherein the first positioning block and the second positioning block are symmetrically arranged, are clamped at a first position and are separated at a second position; the elastic piece acts on the positioning block to provide force for the positioning block to move towards the first position; the pin shaft is connected to the upper part of the clamp shell, and a pin hole is formed in the pin shaft. The disclosed steel wire clamp can also be used for tension test of a fiber rope, but in the process of increasing the tension, the temperature of the structure rises, the fiber rope is deformed by heating and can slip in the wedge-shaped clamp, and the tension test fails.
Disclosure of Invention
The invention aims at the problems and provides a fiber rope tension test fixture.
The technical scheme adopted by the invention is as follows: the utility model provides a fibre rope tensile test anchor clamps, includes the anchor clamps seat, it has the wedge to open in the anchor clamps seat, the wedge slides and is equipped with the wedge clamp splice, be equipped with the fluting that is used for clieing the fibre rope on the wedge clamp splice, be equipped with the eccentric wheel on the anchor clamps seat, the rotatable setting of eccentric wheel, the fibre rope can be fixed on the eccentric wheel and drive the eccentric wheel and rotate, the eccentric wheel is close the great one end of wedge, rotates the eccentric wheel can make the wedge clamp splice to the less one end motion of wedge.
The fixture is characterized in that a limiting block is fixedly arranged on the fixture seat, the limiting block is located between the wedge-shaped clamping block and the eccentric wheel, a through hole is formed in the limiting block, a pushing block is arranged between the wedge-shaped clamping block and the eccentric wheel, the pushing block penetrates through the through hole, and the eccentric wheel rotates to push the pushing block to enable the wedge-shaped clamping block to move towards the smaller end of the wedge-shaped opening.
The wedge-shaped clamping blocks are two and are symmetrically arranged.
Each wedge-shaped clamping block comprises a wedge-shaped block and an inner lining plate, the grooves are formed in the inner lining plates, the two inner lining plates are positioned in the middle and used for clamping the fiber ropes, and the two wedge-shaped blocks are positioned on two sides of the two inner lining plates.
The inner lining plate and the wedge block are provided with mutually matched convex blocks and grooves on one mutually attached surface.
The protruding block is trapezoid, and the shorter side of the trapezoid is close to the slot.
The fixture seat is provided with a round hole, the eccentric wheel is provided with a cylinder matched with the round hole, the cylinder is inserted into the round hole to enable the eccentric wheel to be rotatably arranged, the cylinder is provided with an annular groove and a clamping groove, and the annular groove is communicated with the clamping groove.
The beneficial effects of the invention are as follows: before the test, one end of the fiber rope is fixed on the eccentric wheel and clamped by the wedge-shaped clamping block, the fiber rope is pulled by the tensile force from the other end of the fiber rope, the temperature rises in the process of increasing the tensile force, the fiber rope is deformed by heating, the diameter of the fiber rope is reduced, the friction force is smaller than the tensile force, the fiber rope and the slot slide relatively to drive the eccentric wheel to rotate, the wedge-shaped clamping block is pushed to move towards the smaller end of the wedge-shaped opening, the pressure of the fiber rope is increased, the friction force is increased, and the fiber rope is clamped again. The invention is used for the fiber rope tension test and is more reliable and not easy to fail.
Drawings
Fig. 1 is a schematic structural view of a fiber rope tensile test fixture.
Fig. 2 is a top view of the holder.
Fig. 3 is a top view of the wedge block.
Fig. 4 is a schematic structural view of the lining board.
Fig. 5 is a schematic view of the structure in which the fiber rope is fixed to the eccentric.
Fig. 6 is a schematic structural view of a hidden pushing block of the fiber rope tensile test fixture.
In the figure, 1, a clamp seat; 101, a wedge-shaped port; 102, round holes; 2, wedge-shaped clamping blocks; 201, slotting; 202, wedge blocks; 203, an inner liner; 3, an eccentric wheel; 301, a cylinder; 302, ring grooves; 303, a clamping groove; 4, limiting a block; 401, through holes; 5, pushing the block; 6, a bump; 7, grooves; and 8, a fiber rope.
Description of the embodiments
The invention will be better illustrated with reference to the following drawings and specific examples.
As shown in fig. 1, a fiber rope tensile test fixture comprises a fixture seat 1, wherein a wedge-shaped opening 101 is formed in the fixture seat 1, a wedge-shaped clamping block 2 is slidably arranged at the wedge-shaped opening 101, and a slot 201 for clamping a fiber rope is formed in the wedge-shaped clamping block 2, and the fiber rope tensile test fixture is characterized in that: be equipped with eccentric wheel 3 on the anchor clamps seat 1, eccentric wheel 3 rotatable setting, the fibre rope can be fixed on eccentric wheel 3 and drive eccentric wheel 3 rotation, the eccentric wheel is close the great one end of wedge 101, rotates eccentric wheel 3 can make wedge clamp splice 2 to the less one end of wedge 101 motion. Before the test, one end of the fiber rope is fixed on the eccentric wheel and clamped by the wedge-shaped clamping block, the fiber rope is pulled by the tensile force from the other end of the fiber rope, the temperature rises in the process of increasing the tensile force, the fiber rope is deformed by heating, the diameter of the fiber rope is reduced, the friction force is smaller than the tensile force, the fiber rope and the slot slide relatively to drive the eccentric wheel to rotate, the wedge-shaped clamping block is pushed to move towards the smaller end of the wedge-shaped opening, the pressure of the fiber rope is increased, the friction force is increased, and the fiber rope is clamped again. The invention is used for the fiber rope tension test and is more reliable and not easy to fail.
The fixture is characterized in that a limiting block 4 is fixedly arranged on the fixture seat 1, the limiting block 4 is positioned between the wedge-shaped clamping block 2 and the eccentric wheel 3, a through hole 401 is formed in the limiting block 4, a pushing block 5 is arranged between the wedge-shaped clamping block 2 and the eccentric wheel 3, the pushing block 5 penetrates through the through hole 401, and the eccentric wheel 3 rotates to push the pushing block 5 so that the wedge-shaped clamping block 2 slides towards the smaller end of the wedge-shaped opening 101. The limiting block and the pushing block are not required to be arranged, the eccentric wheel and the wedge-shaped clamping block are close to each other, when the eccentric wheel rotates, the wedge-shaped clamping block can be pushed to enable the two wedge-shaped clamping blocks to move towards the smaller end of the wedge-shaped opening so as to be close to each other, but the wedge-shaped clamping blocks can move towards opposite directions so as to enable the fiber ropes to be separated from the wedge-shaped clamping blocks, and the tensile test fails. The limiting block 4 plays a role in limiting the wedge-shaped clamping blocks, the fiber ropes are guaranteed to be positioned between the two wedge-shaped clamping blocks, and the pushing block 5 plays a role in transmitting the thrust of the eccentric wheel on one side of the limiting block 4 to the wedge-shaped clamping blocks on the other side of the limiting block 4.
The wedge-shaped clamping blocks 2 are two and symmetrically arranged. The number of the wedge-shaped clamping blocks can be 1, the fiber ropes are clamped through the wedge-shaped clamping blocks and the inner wall of the clamp seat, but the fiber ropes are clamped through the two symmetrically-arranged wedge-shaped clamping blocks, and when the wedge-shaped clamping blocks move towards the smaller end of the wedge-shaped opening, the effect on the fiber ropes is more balanced.
Each wedge-shaped clamping block 2 comprises a wedge-shaped block 202 and a lining plate 203, the grooves 201 are arranged in the lining plates 203, two lining plates 203 are arranged in the middle and used for clamping fiber ropes, and two wedge-shaped blocks 202 are arranged on two sides of the two lining plates 203. The lining plate can be of different thickness and grooving size, and the clamping of fiber ropes of different diameters can be realized by replacing the clamp lining plate, if the wedge-shaped block 202 and the lining plate 203 are arranged as a whole to form the wedge-shaped clamping block 2, the wedge-shaped clamping block 2 is required to be arranged into a plurality of wedge-shaped clamping blocks of different thickness and grooving size, so that the occupied area is larger.
The inner lining plate 203 and the wedge-shaped block 202 are provided with mutually matched convex blocks 6 and concave grooves 7 on the mutually attached surface. The inner liner 203 is prevented from being completely moved by the wedge block 202 toward the smaller end of the wedge opening. The projections 6 and the grooves 7 may be provided on the inner liner 203 and the wedge block 202, respectively, or on the wedge block 202 and the inner liner 203, respectively.
The bump 6 has a trapezoid shape, and a shorter side of the trapezoid is located on a surface where the inner liner 203 and the wedge 202 are attached to each other. The bump 6 can also be semicircular, triangular, square or other shapes, so that the trapezoid effect is good, and the processing is convenient.
The fixture seat 1 is provided with a round hole 102, the eccentric wheel 3 is provided with a cylinder 301 matched with the round hole 102, the cylinder 301 is inserted into the round hole 102 to enable the eccentric wheel 3 to be rotatably arranged, the cylinder 301 is provided with a ring groove 302 and a clamping groove 303, and the ring groove 302 is communicated with the clamping groove 303. One end of the fiber rope is firstly placed in the clamping groove and exposed, and the exposed part is pressed by more than 1/2 circle around the ring groove, so that the limiting rope is fixed on the cylinder, and the cylinder can also rotate with the eccentric wheel by pulling the fiber rope. The fixture seat can be fixedly provided with a rotating shaft, the eccentric wheel is provided with a through hole, the eccentric wheel is sleeved on the rotating shaft to realize rotatable arrangement of the eccentric wheel, but the fiber rope is required to be fixed on the eccentric wheel or a structure capable of fixing the fiber rope is required to be additionally arranged on the eccentric wheel, for example, a hollow cylinder is arranged outside the rotating shaft, and the structure is quite complex compared with that of the structure. One end of the limiting rope can be fixed on the cylinder in a knotting mode and wound on the cylinder, but compared with the prior art, the limiting rope is relatively complicated to operate.
Specifically, the fiber ropes 8 are fixed on the eccentric wheels as shown in fig. 5 and clamped between two inner lining plates 203, then the inner lining plates 203 are put between two wedge blocks 202 from above, or the inner lining plates 203 are put between the wedge blocks 202, then the fiber ropes are clamped, and then the fiber ropes are put into the wedge openings 101. At the beginning of a tensile test, the fiber rope 8 is subjected to a tensile force action, the fiber rope 8 is clamped by the grooves 201 between the two clamp lining plates 203, under the combined action of the clamp seat 1, the wedge-shaped blocks 202 and the lining plates 203, the friction force of the fiber rope 7 applied to the grooves 201 increases along with the increase of the tensile force, when the tensile force reaches a certain value, the temperature of the fiber rope rises due to the action of the friction force and the tensile force, the deformation is generated, the diameter of the fiber rope becomes smaller, the friction force is smaller than the tensile force, the fiber rope and the grooves 201 relatively slide, the eccentric wheel 3 is driven to rotate around the round hole 102, the push block 5 is driven to move in the tensile force direction under the limit action of the limit block 4, the wedge-shaped clamping blocks 2 are driven to move in the tensile force direction, the interval between the two wedge-shaped clamping blocks 2 is reduced, the gap formed by the grooves 201 between the two lining plates 203 is reduced, the pressure of the fiber rope 8 is increased, and the fiber rope 8 is clamped again.
The foregoing is merely one embodiment of the present invention, and is not intended to limit the scope of the present invention; the protection scope of the present invention is defined by the claims in the claims, and all equivalent changes and modifications made in accordance with the invention are within the protection scope of the present patent.
Claims (4)
1. The utility model provides a fibre rope tensile test anchor clamps, includes anchor clamps seat (1), it has wedge mouth (101) to open in anchor clamps seat (1), wedge mouth (101) slip is equipped with wedge clamp splice (2), be equipped with on wedge clamp splice (2) and be used for gripping fibre rope's fluting (201), its characterized in that: the fixture seat (1) is provided with an eccentric wheel (3), the eccentric wheel (3) can be rotatably arranged, a fiber rope can be fixed on the eccentric wheel (3) and drives the eccentric wheel (3) to rotate, the eccentric wheel is close to the larger end of the wedge-shaped opening (101), and the wedge-shaped clamping block (2) can move towards the smaller end of the wedge-shaped opening (101) by rotating the eccentric wheel (3);
a limiting block (4) is fixedly arranged on the clamp seat (1), the limiting block (4) is positioned between the wedge-shaped clamping block (2) and the eccentric wheel (3), a through hole (401) is formed in the limiting block (4), a pushing block (5) is arranged between the wedge-shaped clamping block (2) and the eccentric wheel (3), the pushing block (5) penetrates through the through hole (401), and the eccentric wheel (3) is rotated to push the pushing block (5) so that the wedge-shaped clamping block (2) moves towards the smaller end of the wedge-shaped opening (101);
the number of the wedge-shaped clamping blocks (2) is two and the wedge-shaped clamping blocks are symmetrically arranged;
the fixture seat (1) is provided with a round hole (102), the eccentric wheel (3) is provided with a cylinder (301) matched with the round hole (102), the cylinder (301) is inserted into the round hole (102) to enable the eccentric wheel (3) to be rotatably arranged, the cylinder (301) is provided with a ring groove (302) and a clamping groove (303), and the ring groove (302) is communicated with the clamping groove (303).
2. The fiber rope tensile test fixture of claim 1, wherein: each wedge-shaped clamping block (2) comprises a wedge-shaped block (202) and an inner lining plate (203), the grooves (201) are formed in the inner lining plates (203), the two inner lining plates (203) are positioned in the middle and used for clamping fiber ropes, and the two wedge-shaped blocks (202) are positioned on two sides of the two inner lining plates (203).
3. The fiber rope tensile test fixture of claim 2, wherein: the inner lining plate (203) and the wedge-shaped block (202) are provided with mutually matched convex blocks (6) and grooves (7) on the mutually attached surface.
4. A fiber rope tensile test fixture according to claim 3, wherein: the protruding block (6) is trapezoid, and the shorter side of the trapezoid is close to the slot (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710231669.5A CN106872264B (en) | 2017-04-11 | 2017-04-11 | Fiber rope tensile test clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710231669.5A CN106872264B (en) | 2017-04-11 | 2017-04-11 | Fiber rope tensile test clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106872264A CN106872264A (en) | 2017-06-20 |
| CN106872264B true CN106872264B (en) | 2023-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710231669.5A Active CN106872264B (en) | 2017-04-11 | 2017-04-11 | Fiber rope tensile test clamp |
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| CN (1) | CN106872264B (en) |
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| CN107340180A (en) * | 2017-07-06 | 2017-11-10 | 杭州应敏科技有限公司 | Twisted wire lossless clamping device automatically |
| CN108918263B (en) * | 2018-05-16 | 2020-02-21 | 南京航空航天大学 | Fiber bundle characteristic strength and Weibull modulus measuring device and method |
| CN108956282B (en) * | 2018-07-10 | 2021-01-12 | 东南大学 | Special clamp for mechanical property test of medical polymer material |
| CN109540657B (en) * | 2018-12-11 | 2023-04-21 | 东华大学 | Beam fiber stretching clamp holder chuck with positive pressure gradient distribution and application |
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| CN112067464B (en) * | 2020-09-07 | 2023-08-11 | 安徽尚纬电缆有限公司 | Torsion-resistant cable testing device |
| CN112730029B (en) * | 2020-12-25 | 2022-09-23 | 陵县盛泽特色纺织品有限公司 | Yarn strength detection device for spinning |
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| GB175587A (en) * | 1921-02-14 | 1922-05-11 | Alfred Amsler | Improvements in or relating to gripping devices for testing machines and the like |
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| CN202582995U (en) * | 2012-05-16 | 2012-12-05 | 浙江中重精工机械有限公司 | Wedge-shaped clamp of tension tester |
| CN103293055A (en) * | 2013-04-03 | 2013-09-11 | 华中科技大学 | Tensile fixture |
| CN103454147A (en) * | 2013-09-03 | 2013-12-18 | 张家港市胜达钢绳有限公司 | Steel wire clamping device and steel wire tension testing system |
| CN203422277U (en) * | 2013-07-15 | 2014-02-05 | 宇宙钢丝绳有限公司 | Clamping block for steel wire tensile testing machine |
| CN203629955U (en) * | 2013-11-28 | 2014-06-04 | 江苏科技大学 | Steel wire rope clamping device |
| CN203770938U (en) * | 2013-12-16 | 2014-08-13 | 芜湖万润机械有限责任公司 | Hafu joint easy to lock |
| CN205067218U (en) * | 2015-10-10 | 2016-03-02 | 济南大学 | A wire rope antiskid for horizontal tensile testing machine anchor clamps |
| CN105651596A (en) * | 2016-03-23 | 2016-06-08 | 济南时代试金试验机有限公司 | Assistant stretching tool for directly clamping steel wire rope |
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2017
- 2017-04-11 CN CN201710231669.5A patent/CN106872264B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB175587A (en) * | 1921-02-14 | 1922-05-11 | Alfred Amsler | Improvements in or relating to gripping devices for testing machines and the like |
| CN102095634A (en) * | 2010-11-26 | 2011-06-15 | 中国船舶重工集团公司第七○二研究所 | Whole-rope powerless winding and clamping device of wire rope |
| CN102323144A (en) * | 2011-05-31 | 2012-01-18 | 河南省煤炭科学研究院有限公司 | Steel wire rope tensile fixture and horizontal steel wire rope tensile testing machine thereof |
| CN202582995U (en) * | 2012-05-16 | 2012-12-05 | 浙江中重精工机械有限公司 | Wedge-shaped clamp of tension tester |
| CN103293055A (en) * | 2013-04-03 | 2013-09-11 | 华中科技大学 | Tensile fixture |
| CN203422277U (en) * | 2013-07-15 | 2014-02-05 | 宇宙钢丝绳有限公司 | Clamping block for steel wire tensile testing machine |
| CN103454147A (en) * | 2013-09-03 | 2013-12-18 | 张家港市胜达钢绳有限公司 | Steel wire clamping device and steel wire tension testing system |
| CN203629955U (en) * | 2013-11-28 | 2014-06-04 | 江苏科技大学 | Steel wire rope clamping device |
| CN203770938U (en) * | 2013-12-16 | 2014-08-13 | 芜湖万润机械有限责任公司 | Hafu joint easy to lock |
| CN205067218U (en) * | 2015-10-10 | 2016-03-02 | 济南大学 | A wire rope antiskid for horizontal tensile testing machine anchor clamps |
| CN105651596A (en) * | 2016-03-23 | 2016-06-08 | 济南时代试金试验机有限公司 | Assistant stretching tool for directly clamping steel wire rope |
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| CN106872264A (en) | 2017-06-20 |
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