CN211504981U

CN211504981U - Steel wire clamp

Info

Publication number: CN211504981U
Application number: CN201922308078.0U
Authority: CN
Inventors: 谭广能; 麦英伟; 樊嗣坚; 罗万良
Original assignee: Grandtry Testing Instruments Co ltd
Current assignee: Grandtry Testing Instruments Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-15
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses a steel wire clamp, which comprises a first clamp, a second clamp and a third clamp, wherein the first clamp comprises a first base, a first wire wheel arranged on the first base, a first pressing device positioned above the first wire wheel and a first connecting device positioned above the first pressing device; the second clamp comprises a second base arranged at an interval with the first base, a second wire wheel arranged on the second base, a second pressing device positioned below the second wire wheel and a second connecting device positioned below the second pressing device, and the second base is connected with the second connecting device and can rotate relative to the second connecting device; one end of the sample is pressed through the first pressing device and bypasses the first wire wheel and the second wire wheel in sequence, and the other end of the sample is pressed through the second pressing device. The utility model discloses but the automatic adjustment stress point makes the pulling force that the sample received and the coincidence of testing machine tensile center, need not to increase the counter weight, has simplified test operation.

Description

Steel wire clamp

Technical Field

The utility model relates to a steel wire check out test set technical field, concretely relates to steel wire anchor clamps.

Background

In steel wire production, in order to guarantee the production quality of fine steel wires, various detection tests are generally required to be carried out on the produced steel wires, the tensile length of the steel wires is used for detecting indexes such as the maximum bearing tension, the elongation deformation and the like of the steel wires, and products with qualified quality are guaranteed to leave a factory. The winding method increases friction force in a wire wheel winding mode, and meanwhile, stress damage to the steel wire cannot be caused, so that the winding method is widely applied to the steel wire rope tension test.

However, the existing winding method tensile test has some disadvantages, as shown in fig. 1, which is a side view of a steel wire clamp in the prior art, the structure of the steel wire clamp is that a wire wheel 1 'is fixed on a bottom plate 2', one end of a sample is pressed tightly by a pressing plate 3', the other end of the sample extends downwards after winding the wire wheel 1' for one circle and is clamped by another symmetrical steel wire clamp, in order to ensure that the stress direction of the sample is coincided with the tensile center of a testing machine, the wire wheel 1 'needs to deviate from the tensile center for a certain radial distance of the wire wheel 1' and needs to add a counterweight 4 'in the other direction, in order to ensure that the gravity center of the clamp is coincided with the tensile center of the testing machine, the clamping mode has the characteristics of simple and reliable operation, but has the biggest disadvantage that the counterweight 4' needs to be added to increase the weight of a chuck of the testing machine, which affects the adjustment to the zero point, if other clamps are replaced, the balance weight 4' on the force measuring lever needs to be readjusted, the operation is complex, and the efficiency is not high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steel wire fixture, the automatic adjustment stress point makes the pulling force that the sample received and the coincidence of testing machine tensile center, need not to increase the counter weight, and the measurement accuracy is guaranteed in the simplified operation.

To achieve the purpose, the utility model adopts the following technical proposal:

provided is a wire clamp including:

the first clamp comprises a first base, a first wire wheel arranged on the first base, a first pressing device positioned above the first wire wheel and used for pressing a sample, and a first connecting device positioned above the first pressing device, wherein the first base is connected with the first connecting device and can rotate relative to the first connecting device;

the second clamp comprises a second base, a second wire wheel, a second pressing device and a second connecting device, wherein the second base is symmetrical to the first base and is arranged at intervals, the second wire wheel is installed on the second base, the second pressing device is positioned below the second wire wheel and is used for pressing the sample, the second connecting device is positioned below the second pressing device, and the second base is connected with the second connecting device and can rotate relative to the second connecting device;

one end of the sample is pressed through the first pressing device and sequentially bypasses the first wire wheel and the second wire wheel, and the other end of the sample is pressed through the second pressing device.

As a preferable scheme of the steel wire clamp, the first pressing device includes a first fixed block, a first moving block and a first pushing device, the first fixed block is installed on the first base and is arranged at intervals along the horizontal direction, a first pressing plate is arranged on one side, adjacent to the first moving block, of the first fixed block, a second pressing plate is arranged on one side, adjacent to the first fixed block, of the first moving block, and the first pushing device is connected with the first moving block to push the second pressing plate to horizontally move to be in press fit with the first pressing plate.

As a preferable scheme of the steel wire clamp, the first pushing device includes a second fixed block located on one side of the first moving block away from the first fixed block, a first screw rod, and a first handle connected to one end of the first screw rod, the second fixed block is provided with a first threaded through hole, the first screw rod penetrates through the first threaded through hole and is connected to the first moving block, and the first handle can push the first moving block to move horizontally through the first screw rod.

As a preferable scheme of the steel wire clamp, the first fixed block is a trapezoidal structure with a wide top and a narrow bottom, the first pressing plate is located on an inclined surface of the first fixed block, the first moving block is a trapezoidal structure with a narrow top and a wide bottom, the second pressing plate is located on an inclined surface of the first moving block, and the first pressing plate and the second pressing plate are symmetrically arranged.

As a preferred scheme of the steel wire clamp, the first connecting device includes a first connecting seat and a first rotating shaft, the first connecting seat has a first through hole, a position of the first base corresponding to the first through hole has a first connecting hole, and the first rotating shaft passes through the first through hole and the first connecting hole to connect the first connecting device and the first base.

As a preferable scheme of the steel wire clamp, the second pressing device includes a third fixed block, a second moving block and a second pushing device, the third fixed block is installed on the second base and is arranged at intervals along the horizontal direction, a third pressing plate is arranged on one side, adjacent to the second moving block, of the third fixed block, a fourth pressing plate is arranged on one side, adjacent to the third fixed block, of the second moving block, and the second pushing device is connected with the second moving block to push the fourth pressing plate to horizontally move to be in press fit with the third pressing plate.

As a preferable scheme of the steel wire clamp, the second pushing device includes a fourth fixed block located on one side of the second moving block far away from the third fixed block, a second screw rod, and a second handle connected to one end of the second screw rod, the fourth fixed block is provided with a second threaded through hole, the second screw rod penetrates through the second threaded through hole and is connected to the second moving block, and the second handle can push the second moving block to move horizontally through the second screw rod.

As a preferable scheme of the steel wire clamp, the third fixed block is a trapezoidal structure with a narrow top and a wide bottom, the third pressing plate is located on an inclined plane of the third fixed block, the second moving block is a trapezoidal structure with a wide top and a narrow bottom, the fourth pressing plate is located on an inclined plane of the second moving block, and the third pressing plate and the fourth pressing plate are symmetrically arranged.

As a preferable scheme of the steel wire clamp, the second connecting device includes a second connecting seat and a second rotating shaft, the second connecting seat is provided with a second through hole, a second connecting hole is formed in a position, corresponding to the second through hole, on the second base, and the second rotating shaft penetrates through the second through hole and the second connecting hole to connect the second connecting device and the second base.

As a preferable scheme of the steel wire clamp, the steel wire clamp further comprises a first joint and a second joint, wherein the first joint is installed on the first connecting seat, and the second joint is installed on the second connecting seat.

The utility model has the advantages that: the utility model discloses a center of gravity of steel wire anchor clamps before the atress coincides with the tensile center of testing machine to when carrying out tensile test, anchor clamps are under the exogenic action, and line wheel automatic swing, the automatic adjustment stress point makes the tensile force that the sample received coincide with the tensile center of testing machine, therefore anchor clamps need not to increase the center of gravity of counter weight with adjustment anchor clamps and the tensile center of testing machine, have alleviateed anchor clamps weight, have simplified test operation, have improved test efficiency, guarantee measurement accuracy again simultaneously.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic sectional view of a conventional wire clamp.

Fig. 2 is a schematic sectional view of a steel wire clamp according to an embodiment of the present invention before being stressed.

Fig. 3 is a schematic sectional view of the steel wire clamp according to an embodiment of the present invention after being stressed.

In fig. 1:

1', a wire wheel; 2', a bottom plate; 3', a pressing plate; 4' and a counterweight.

In fig. 2 and 3:

1. a first clamp; 11. a first base; 12. a first reel; 13. a first pressing device; 131. a first fixed block; 132. a first moving block; 133. a first urging device; 1331. a second fixed block; 1332. a first screw; 1333. a first handle; 134. a first platen; 135. a second platen; 14. a first connecting means; 141. a first connecting seat; 142. a first rotating shaft; 15. a first joint;

2. a second clamp; 21. a second base; 22. a second reel; 23. a second pressing device; 231. a third fixed block; 232. a second moving block; 233. a second pushing device; 2331. a fourth fixed block; 2332. a second screw; 2333. a second handle; 234. a third press plate; 235. a fourth platen; 24. a second connecting means; 241. a second connecting seat; 242. a second rotating shaft; 25. a second joint.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 2, the embodiment of the present invention provides a wire clamp including:

the first clamp 1 comprises a first base 11, a first wire wheel 12 arranged on the first base 11, a first pressing device 13 positioned above the first wire wheel 12 and used for pressing a test sample, and a first connecting device 14 positioned above the first pressing device 13, wherein the first base 11 is connected with the first connecting device 14 and can rotate relative to the first connecting device 14;

the second clamp 2 comprises a second base 21 which is symmetrical to the first base 11 and is arranged at intervals, a second wire wheel 22 which is arranged on the second base 21, a second pressing device 23 which is positioned below the second wire wheel 22 and is used for pressing a sample, and a second connecting device 24 which is positioned below the second pressing device 23, wherein the second base 21 is connected with the second connecting device 24 and can rotate relative to the second connecting device 24;

one end of the sample is pressed by the first pressing device 13 and sequentially bypasses the first wire wheel 12 and the second wire wheel 22, and the other end of the sample is pressed by the second pressing device 23.

The first clamp 1 and the second clamp 2 of the embodiment are fixed at two ends of the testing machine, one end of the sample is fixed on the first pressing device 13 and extends downwards into the second clamp 2 after the first wire wheel 12 is wound for one circle, and the sample is fixed on the second pressing device 23 after the second wire wheel 22 is wound for one circle, wherein the first wire wheel 12 and the second wire wheel 22 in the embodiment have the function of increasing friction force to fix the sample and prevent the sample from slipping; before the tensile force is applied to the testing machine, the gravity centers of the first clamp 1 and the second clamp 2 coincide with the tensile center of the testing machine, and when the tensile test is performed, the testing machine drives the second clamp 2 to move upwards, as shown in fig. 3, under the tensile force action of the testing machine, the first wire wheel 12 automatically swings relative to the first connecting device 14, and the second wire wheel 22 automatically swings relative to the second connecting device 24, so that the tensile force applied to the sample coincides with the tensile center of the testing machine, therefore, the clamping machine does not need to be additionally provided with a balance weight to adjust the gravity center of the clamping machine and the tensile center of the testing machine, the weight of the clamping machine is reduced, the testing operation is simplified, the testing efficiency is improved, and meanwhile.

As a preferred embodiment of the present invention, the first pressing device 13 includes a first fixed block 131, a first moving block 132 and a first pushing device 133 which are installed on the first base 11 and are arranged at intervals along the horizontal direction, a first pressing plate 134 is disposed on one side of the first fixed block 131 adjacent to the first moving block 132, a second pressing plate 135 is disposed on one side of the first moving block 132 adjacent to the first fixed block 131, and the first pushing device 133 is connected with the first moving block 132 to push the second pressing plate 135 to move horizontally to press with the first pressing plate 134. In this embodiment, the first fixed block 131 is fixed on the first base 11, the first moving block 132 is disposed on the first base 11, one end of the sample is disposed between the first fixed block 131 and the first moving block 132, the first pushing device 133 pushes the first moving block 132 to move toward the first fixed block 131, and the second pressing plate 135 and the first pressing plate 134 clamp one end of the sample to apply a pre-tightening force.

In this embodiment, the first pushing device 133 includes a second fixed block 1331 located on a side of the first moving block 132 away from the first fixed block 131, a first screw 1332, and a first handle 1333 connected to one end of the first screw 1332, the second fixed block 1331 is provided with a first threaded through hole, the first screw 1332 passes through the first threaded through hole and is connected to the first moving block 132, and the first handle 1333 can push the first moving block 132 to move horizontally through the first screw 1332. In this embodiment, the second fixing block 1331 is fixed on the first base 11 and configured to fix and support the first screw 1332, a first threaded connection hole is formed in a position of the first moving block 132 corresponding to the first threaded connection hole, and a first small hole is formed above the first moving block 132 corresponding to the first threaded connection hole, a groove is formed in the upper surface of the first screw 1332, when the first screw 1332 passes through the first threaded connection hole and the first threaded connection hole, a small screw passes through the first small hole above the first threaded connection hole and just falls on the groove of the first screw 1332, the first screw 1332 is fixed on the first moving block 132, and an operator rotates the first handle 1333 to push the first moving block 132 to move in the direction of the first fixing block 131 until the second pressing plate 135 and the first pressing plate 134 are pressed together, so as to clamp one end of the sample.

In this embodiment, the first fixed block 131 is a trapezoid structure with a wide top and a narrow bottom, the first pressing plate 134 is located on an inclined surface of the first fixed block 131, the first moving block 132 is a trapezoid structure with a narrow top and a wide bottom, the second pressing plate 135 is located on an inclined surface of the first moving block 132, and the first pressing plate 134 and the second pressing plate 135 are symmetrically disposed.

In this embodiment, the first connecting device 14 includes a first connecting seat 141 and a first rotating shaft 142, the first connecting seat 141 is provided with a first through hole, the first base 11 is provided with a first connecting hole corresponding to the first through hole, and the first rotating shaft 142 passes through the first through hole and the first connecting hole to connect the first connecting device 14 and the first base 11. The first connection seat 141 in this embodiment can rotate relative to the first base 11, when the first clamp 1 is fixed to the testing machine, and the testing machine drives the first clamp 1 to move upwards, the sample can receive an upward pulling force, and meanwhile, because the sample is fixed at two ends through the first pressing device 13 and the second pressing device 23, the first reel 12 can automatically swing relative to the first connection device 14, and the second reel 22 can automatically swing relative to the second connection device 24, so that the pulling force received by the sample coincides with the tensile center of the testing machine.

In this embodiment, the second pressing device 23 includes a third fixed block 231, a second moving block 232 and a second pushing device 233 which are installed on the second base 21 and are arranged at intervals along the horizontal direction, a third pressing plate 234 is arranged on one side of the third fixed block 231 adjacent to the second moving block 232, a fourth pressing plate 235 is arranged on one side of the second moving block 232 adjacent to the third fixed block 231, and the second pushing device 233 is connected with the second moving block 232 to push the fourth pressing plate 235 to move horizontally to be pressed with the third pressing plate 234. In this embodiment, the third fixed block 231 is fixed on the second base 21, the second moving block 232 is disposed on the second base 21, the other end of the sample is disposed between the third fixed block 231 and the second moving block 232, the second pushing device 233 pushes the second moving block 232 to move toward the third fixed block 231, and the fourth pressing plate 235 and the third pressing plate 234 clamp the other end of the sample to apply a pre-tightening force.

In this embodiment, the second pushing device 233 includes a fourth fixed block 2331 located on a side of the second moving block 232 away from the third fixed block 231, a second screw 2332, and a second handle 2333 connected to one end of the second screw 2332, the fourth fixed block 2331 is provided with a second threaded through hole, the second screw 2332 passes through the second threaded through hole and is connected to the second moving block 232, and the second handle 2333 can push the second moving block 232 to move horizontally through the second screw 2332. The fourth fixed block 2331 in this embodiment is fixed on the second base 21 and is configured to fix and support the second screw 2332, a second threaded connection hole is formed in a position of the second moving block 232 corresponding to the second threaded through hole, a second small hole is formed above the second moving block 232 corresponding to the first threaded connection hole, meanwhile, a groove is formed in the upper surface of the second screw 2332 in this embodiment, when the second screw 2332 passes through the second threaded through hole and the second threaded connection hole, a small screw passes through the second small hole above the second threaded connection hole and just falls on the groove of the second screw 2332, the second screw 2332 is fixed on the second moving block 232, and an operator rotates the second handle 2333 to move the second moving block 232 in the direction of the third fixed block 231 until the fourth pressing plate 235 is pressed against the third pressing plate 234 to clamp the other end of the test sample 231.

In this embodiment, the third fixed block 231 is a trapezoid structure with a narrow top and a wide bottom, the third pressing plate 234 is located on an inclined surface of the third fixed block 231, the second moving block 232 is a trapezoid structure with a wide top and a narrow bottom, the fourth pressing plate 235 is located on an inclined surface of the second moving block 232, and the third pressing plate 234 and the fourth pressing plate 235 are symmetrically disposed.

In this embodiment, the second connecting device 24 includes a second connecting seat 241 and a second rotating shaft 242, the second connecting seat 241 is provided with a second through hole, the second base 21 is provided with a second connecting hole corresponding to the second through hole, and the second rotating shaft 242 passes through the second through hole and the second connecting hole to connect the second connecting device 24 and the second base 21. The second connecting seat 241 in this embodiment can rotate relative to the second base 21.

The wire clamp in this embodiment further includes a first joint 15 and a second joint 25, the first joint 15 is mounted on the first connecting seat 141, and the second joint 25 is mounted on the second connecting seat 241. In this embodiment, the first joint 15 is provided with a third through hole, a pin penetrates through the third through hole to fix the first clamp 1 at one end of the testing machine, the second joint 25 is provided with a fourth through hole, and a pin penetrates through the fourth through hole to fix the second clamp 2 at the other end of the testing machine.

It should be understood that the above-described embodiments are merely illustrative of the preferred embodiments of the present invention and the technical principles thereof. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, these modifications are within the scope of the present invention as long as they do not depart from the spirit of the present invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. A wire clamp, comprising:

the first clamp (1) comprises a first base (11), a first wire wheel (12) arranged on the first base (11), a first pressing device (13) located above the first wire wheel (12) and used for pressing a sample, and a first connecting device (14) located above the first pressing device (13), wherein the first base (11) is connected with the first connecting device (14) and can rotate relative to the first connecting device (14);

the second clamp (2) comprises a second base (21) which is symmetrical to the first base (11) and is arranged at intervals, a second reel (22) which is installed on the second base (21), a second pressing device (23) which is positioned below the second reel (22) and is used for pressing the sample, and a second connecting device (24) which is positioned below the second pressing device (23), and the second base (21) is connected with the second connecting device (24) and can rotate relative to the second connecting device (24);

one end of the sample is pressed through the first pressing device (13) and sequentially bypasses the first wire wheel (12) and the second wire wheel (22), and the other end of the sample is pressed through the second pressing device (23).

2. The wire clamp according to claim 1, wherein the first pressing device (13) comprises a first fixed block (131), a first moving block (132) and a first pushing device (133), the first fixed block (131) is installed on the first base (11) and is arranged at intervals along the horizontal direction, a first pressing plate (134) is arranged on one side, adjacent to the first moving block (132), of the first fixed block (131), a second pressing plate (135) is arranged on one side, adjacent to the first fixed block (131), of the first moving block (132), and the first pushing device (133) is connected with the first moving block (132) to push the second pressing plate (135) to move horizontally to be pressed with the first pressing plate (134).

3. The wire clamp according to claim 2, wherein the first pushing device (133) comprises a second fixed block (1331) located on one side of the first moving block (132) far from the first fixed block (131), a first screw (1332), and a first handle (1333) connected to one end of the first screw (1332), the second fixed block (1331) is provided with a first threaded through hole, the first screw (1332) passes through the first threaded through hole to be connected to the first moving block (132), and the first handle (1333) can push the first moving block (132) to move horizontally through the first screw (1332).

4. The wire clamp according to claim 2, wherein the first fixed block (131) has a trapezoidal structure with a wide top and a narrow bottom, the first pressing plate (134) is located on an inclined surface of the first fixed block (131), the first moving block (132) has a trapezoidal structure with a narrow top and a wide bottom, the second pressing plate (135) is located on an inclined surface of the first moving block (132), and the first pressing plate (134) and the second pressing plate (135) are symmetrically arranged.

5. The wire clamp according to claim 1, wherein the first connecting device (14) comprises a first connecting base (141) and a first rotating shaft (142), the first connecting base (141) has a first through hole, a first connecting hole is formed on the first base (11) at a position corresponding to the first through hole, and the first rotating shaft (142) passes through the first through hole and the first connecting hole to connect the first connecting device (14) and the first base (11).

6. The wire clamp according to claim 1, wherein the second pressing device (23) comprises a third fixed block (231), a second movable block (232) and a second pushing device (233), the third fixed block (231) is mounted on the second base (21) and is arranged at intervals along the horizontal direction, a third pressing plate (234) is arranged on one side of the third fixed block (231) adjacent to the second movable block (232), a fourth pressing plate (235) is arranged on one side of the second movable block (232) adjacent to the third fixed block (231), and the second pushing device (233) is connected with the second movable block (232) to push the fourth pressing plate (235) to move horizontally to be pressed with the third pressing plate (234).

7. The wire clamp according to claim 6, wherein the second pushing device (233) comprises a fourth fixed block (2331) located on one side of the second movable block (232) away from the third fixed block (231), a second screw (2332), and a second handle (2333) connected to one end of the second screw (2332), the fourth fixed block (2331) is provided with a second through hole, the second screw (2332) passes through the second through hole and is connected to the second movable block (232), and the second handle (2333) can push the second movable block (232) to move horizontally through the second screw (2332).

8. The wire clamp according to claim 6, wherein the third fixed block (231) is a trapezoid structure with a narrow top and a wide bottom, the third pressing plate (234) is located on an inclined surface of the third fixed block (231), the second moving block (232) is a trapezoid structure with a wide top and a narrow bottom, the fourth pressing plate (235) is located on an inclined surface of the second moving block (232), and the third pressing plate (234) and the fourth pressing plate (235) are symmetrically arranged.

9. The wire clamp according to claim 5, wherein the second connecting device (24) comprises a second connecting seat (241) and a second rotating shaft (242), the second connecting seat (241) is provided with a second through hole, a second connecting hole is formed on the second base (21) at a position corresponding to the second through hole, and the second rotating shaft (242) passes through the second through hole and the second connecting hole to connect the second connecting device (24) and the second base (21).

10. The wire clamp according to claim 9, further comprising a first joint (15) and a second joint (25), the first joint (15) being mounted on the first connection seat (141), the second joint (25) being mounted on the second connection seat (241).