Clamp for testing performance of steel wire rope

Abstract

The utility model discloses a clamp for testing the performance of a steel wire rope, which belongs to the technical field of testing equipment and comprises a shell, a through hole is formed in the front end of the shell, a plurality of sliding grooves extending to the edge of the shell are formed in the edge of the through hole, and the sliding grooves are formed in the radial position of the through hole. Guide grooves communicated with the through hole are formed in the inner walls of the two sides of the sliding groove, guide column heads arranged at the clamping jaws can be matched with the spiral adjusting groove to slide, meanwhile, the guide bosses are matched with the guide grooves to slide, the clamping ends of the clamping jaws are matched with the sliding groove to move towards the center of the through hole, and therefore a steel wire rope is clamped in a centering mode. According to the clamp, the contact point between the clamp and the steel wire rope is increased, so that the clamping stability of the steel wire rope is ensured, the direction of force is always in the axial position of the steel wire rope when the clamp is pulled by equipment, and the accuracy of detection data of the steel wire rope is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, and more specifically to a clamp for testing the performance of a steel wire rope. Background Art

[0002] Chinese patent authorization announcement number CN202757833 discloses a wire rope tension test machine clamp, which is easy to disassemble and assemble, simple to operate, and at the same time, the arc-shaped grooves of the guide blocks on the upper and lower clamps bear the tension force during the tensile test of the wire rope sample. The wire rope can quickly and conveniently measure the test index value, so that the wire rope sample is broken in the middle, ensuring that the test data is true and reliable. However, the wire rope clamp described in the above patent has the following problems: the existing wire rope clamp is not convenient to use with the test equipment of bicycle brake performance, which makes it inconvenient to clamp the elastic rope, and it is not convenient to stably test the tensile fatigue of the elastic rope on the test equipment of bicycle brake performance.

[0003] The existing patent is a kind of elastic rope tensile fatigue testing equipment, and the patent authorization number is CN 215640556 U. The patent solves the problem that the existing wire rope clamp is not convenient to be used with the bicycle brake performance testing equipment, which makes it inconvenient to clamp the elastic rope and not convenient to stably test the tensile fatigue of the elastic rope on the bicycle brake performance testing equipment. By improving and optimizing the clamp structure of the wire rope, the wire rope clamp can be stably installed on the bicycle brake performance testing equipment, thereby facilitating the clamp to clamp the elastic rope.

[0004] However, in the patent authorization number CN 215640556 U, a converter is provided on the side of the pressure head facing the adjusting screw, and a rotating handle is provided at the front end of the adjusting screw; the adjusting screw is convenient for driving the pressure plate to move forward and backward, so as to facilitate the compression of the elastic rope. Since there are few contact points between the pressure plate and the rope body, the contact area between the pressure plate and the rope body is low, which easily leads to unstable clamping of the rope body, and the clamping part of the rope body is bent, and the rope body is easy to break at the bent part, resulting in inaccurate detection data of the rope body. Therefore, we propose a clamp for testing the performance of wire ropes to solve the above-mentioned problems. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a clamp for testing the performance of wire ropes, which can make the guide column head set at the clamping jaws cooperate with the sliding of the spiral adjustment groove, and at the same time make the guide boss cooperate with the guide groove to slide, so that the clamping end of the clamping jaws cooperates with the slide groove to move toward the center of the through hole, thereby centering the wire rope, improving the contact point between the wire rope and the clamp, thereby ensuring the stability of the wire rope clamping, and when the equipment is used to pull the clamp, the direction of the force is always in the axial position of the wire rope, ensuring the accuracy of the wire rope detection data.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A fixture for testing the performance of a steel wire rope, comprising a housing;

[0010] A through hole is provided at the front end of the shell, a slide groove extending to the edge of the shell is provided at the edge of the through hole, and a plurality of slide grooves are provided at radial positions of the through hole, and guide grooves connected to the through hole are provided on both inner walls of the two sides of the slide groove;

[0011] An adjusting disk arranged in a ring structure is rotatably connected to the inner side of the shell, and a spiral adjusting groove is provided on the surface of the adjusting disk close to the through hole;

[0012] The inner sides of the plurality of slide grooves are all slidably connected with clamping jaws, the outer walls on both sides of the clamping jaws are welded with guide bosses that are gap-matched with the guide grooves, and the surface of the clamping jaws close to the adjustment disk is welded with guide column heads that are gap-matched with the spiral adjustment grooves;

[0013] A driven bevel gear is welded to the surface of the adjusting disk away from the spiral adjusting groove through a bracket, an adjusting shaft is rotatably connected to the top of the housing, and a driving bevel gear meshing with the driven bevel gear is installed at the bottom end of the adjusting shaft.

[0014] Furthermore, a connecting ear is welded on the end edge of the shell.

[0015] Furthermore, the connecting ears are specifically arranged in three groups at radial positions of the shell, and two connecting ears are symmetrically arranged in each group.

[0016] Furthermore, a first bearing is installed on the inner side of the housing corresponding to the adjusting disk, and the first bearing is interference-connected with the adjusting disk.

[0017] Furthermore, a clamping groove is formed at one end of the clamping jaw close to the through hole, and an anti-slip tooth perpendicular to the axial position of the through hole is fixedly connected to the inner side of the clamping groove.

[0018] Furthermore, a second bearing is installed at the junction of the adjusting shaft and the housing, and the second bearing is interference-connected with the adjusting shaft.

[0019] Furthermore, the top end of the adjusting shaft protrudes from the housing, and a plug hole is provided at the top end of the adjusting shaft.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] (1) This scheme drives the adjustment shaft to rotate clockwise, utilizes the active bevel gear to mesh with the driven bevel gear, thereby driving the adjustment disk to rotate, and the guide column head set at the clamping jaw cooperates with the spiral adjustment groove to slide, and at the same time makes the guide boss cooperate with the guide groove to slide, so that the clamping end of the clamping jaw cooperates with the slide groove to move toward the center of the through hole, thereby centering the wire rope, improving the contact point between the wire rope and the clamp, thereby ensuring the stability of the wire rope clamping, and when the equipment is used to pull the clamp, the direction of the force is always in the axial position of the wire rope, ensuring the accuracy of the wire rope detection data.

[0023] (2) This solution utilizes three sets of connecting ears to install the iron chain used to pull the clamp. When pulling, the pulling force can be gathered at the axial center of the shell, which can ensure the uniformity of the pulling force and further ensure the accuracy of the wire rope tension performance test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0025] Figure 2 It is a front view schematic diagram of the utility model;

[0026] Figure 3 It is a schematic cross-sectional view of the AA part of the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the adjustment disk of the utility model;

[0028] Figure 5 This is a structural schematic diagram of the adjustment disk of the utility model from another perspective;

[0029] Figure 6 This is a schematic diagram of the clamping jaw structure of the utility model;

[0030] Figure 7 This is a schematic diagram of the housing structure of the utility model;

[0031] Figure 8 It is a schematic structural diagram of the housing of the utility model from another viewing angle.

[0032] Description of the numbers in the figure:

[0033] 1. Housing; 2. Through hole; 3. Adjustment disk; 4. Spiral adjustment groove; 5. First bearing; 6. Clamping claw; 7. Guide boss; 8. Slide groove; 9. Guide groove; 10. Guide column head; 11. Anti-skid teeth; 12. Driven bevel gear; 13. Adjustment shaft; 14. Driving bevel gear; 15. Second bearing; 16. Connecting ear. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0035] Example:

[0036] See also Figure 1-8 , a fixture for testing the performance of a steel wire rope, comprising a housing 1;

[0037] A through hole 2 is provided at the front end of the housing 1, a slide groove 8 extending to the edge of the housing 1 is provided at the edge of the through hole 2, and a plurality of slide grooves 8 are provided at radial positions of the through hole 2, and guide grooves 9 are provided on both sides of the inner wall of the slide groove 8 and are conductively connected to the through hole 2;

[0038] An adjusting disk 3 in a ring-shaped structure is rotatably connected to the inner side of the housing 1, and a spiral adjusting groove 4 is provided on the surface of the adjusting disk 3 close to the through hole 2;

[0039] The inner sides of the plurality of slide grooves 8 are all slidably connected with clamping jaws 6, and the outer walls on both sides of the clamping jaws 6 are welded with guide bosses 7 with clearance fit of the guide grooves 9, and the surface of the clamping jaws 6 close to the adjustment disk 3 is welded with guide studs 10 with clearance fit of the spiral adjustment grooves 4;

[0040] A driven bevel gear 12 is welded to the surface of the adjusting disk 3 away from the spiral adjusting groove 4 through a bracket, and an adjusting shaft 13 is rotatably connected to the top of the housing 1. A driving bevel gear 14 meshing with the driven bevel gear 12 is installed at the bottom end of the adjusting shaft 13;

[0041] It should be noted that when the wire rope performance test fixture is in use, the fixture is provided with two pairs. The end of the wire rope to be tested is placed inside the through hole 2 provided in the shell 1, and then the adjusting shaft 13 is driven to rotate clockwise, and the active bevel gear 14 is meshed with the driven bevel gear 12, thereby driving the adjusting disk 3 to rotate, and the guide column head 10 provided at the clamping jaw 6 cooperates with the spiral adjusting groove 4 to slide, and at the same time, the guide boss 7 cooperates with the guide groove 9 to slide, and then the clamping end of the clamping jaw 6 cooperates with the slide groove 8 to move toward the center of the through hole 2, so as to center the wire rope, improve the contact point between the wire rope and the clamp, thereby ensuring the stability of the wire rope clamping, and when the equipment is used to pull the clamp, the direction of the force is always in the axial position of the wire rope, thereby ensuring the accuracy of the wire rope detection data.

[0042] like Figure 8 As shown, the end edge of the shell 1 is welded with a connecting ear 16, and the connecting ears 16 are specifically arranged in three groups at the radial position of the shell 1, and each group of connecting ears 16 is symmetrically arranged with two;

[0043] It should be noted that by using three sets of connecting ears 16 to install the iron chain used to pull the clamp, the pulling force can be gathered at the axial center of the shell 1 when pulling, which can ensure the uniformity of the pulling force and further ensure the accuracy of the wire rope tension performance test data.

[0044] like Figure 3 As shown, a first bearing 5 is installed on the inner side of the housing 1 corresponding to the adjusting disk 3, and the first bearing 5 is interference-connected with the adjusting disk 3;

[0045] It should be noted that not only the resistance of the adjusting disk 3 during the rotation process is reduced, but also the rotation accuracy of the adjusting disk 3 is guaranteed.

[0046] like Figure 6 As shown, a clamping groove is provided at one end of the clamping jaw 6 close to the through hole 2, and an anti-slip tooth 11 which is perpendicular to the axial position of the through hole 2 is fixedly connected to the inner side of the clamping groove;

[0047] It should be noted that the arc-shaped slot can increase the contact area with the steel wire rope, and the clamping position of the anti-slip teeth 11 is perpendicular to the axial position of the steel wire rope, thereby improving the clamping stability of the steel wire rope.

[0048] like Figure 1 As shown, a second bearing 15 is installed at the joint of the adjusting shaft 13 and the housing 1, and the second bearing 15 is interference-connected with the adjusting shaft 13. The top end of the adjusting shaft 13 protrudes from the housing 1, and a plug-in hole is opened at the top end of the adjusting shaft 13.

[0049] It should be noted that the friction between the adjustment shaft 13 and the housing 1 is reduced, and the rotation accuracy of the adjustment shaft 13 is guaranteed. At the same time, a shaft rod is installed on the inner side of the plug hole set at the top of the adjustment shaft 13 to facilitate driving the adjustment shaft 13 to rotate.

[0050] When in use: place the end of the wire rope to be tested into the inner side of the through hole 2 provided in the housing 1, and then drive the adjusting shaft 13 to rotate clockwise, and the active bevel gear 14 meshes with the driven bevel gear 12, thereby driving the adjusting disk 3 to rotate, and the guide column head 10 provided at the clamping jaw 6 cooperates with the spiral adjusting groove 4 to slide, and at the same time, the guide boss 7 cooperates with the guide groove 9 to slide, and then the clamping end of the clamping jaw 6 cooperates with the slide groove 8 to move toward the center of the through hole 2, so as to center the wire rope, improve the contact point between the wire rope and the wire rope, thereby ensuring the stability of the wire rope clamping, and when the clamp is pulled by the equipment, the direction of the force is always in the axial position of the wire rope.

[0051] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A clamp for testing the performance of a steel wire rope, characterized in that: It comprises a housing (1); The front end of the shell (1) is provided with a through hole (2), the edge of the through hole (2) is provided with a slide groove (8) extending to the edge of the shell (1), and a plurality of slide grooves (8) are arranged at radial positions of the through hole (2), and the inner walls on both sides of the slide groove (8) are provided with guide grooves (9) which are conductively connected to the through hole (2); An adjusting disk (3) arranged in an annular structure is rotatably connected to the inner side of the housing (1), and a spiral adjusting groove (4) is provided on the surface of the adjusting disk (3) close to the through hole (2); The inner sides of the plurality of slide grooves (8) are all slidably connected with clamping jaws (6), the outer walls on both sides of the clamping jaws (6) are welded with guide bosses (7) which are clearance-matched with the guide grooves (9), and the surface of the clamping jaws (6) close to the adjusting disk (3) is welded with guide column heads (10) which are clearance-matched with the spiral adjusting grooves (4); A driven bevel gear (12) is welded to the surface of the adjusting disk (3) away from the spiral adjusting groove (4) via a bracket, an adjusting shaft (13) is rotatably connected to the top of the housing (1), and a driving bevel gear (14) meshing with the driven bevel gear (12) is installed at the bottom end of the adjusting shaft (13).

2. A wire rope performance testing fixture according to claim 1, characterized in that: A connecting ear (16) is welded to the end edge of the shell (1).

3. A wire rope performance testing fixture according to claim 2, characterized in that: The connecting ears (16) are specifically arranged in three groups at radial positions of the housing (1), and each group of the connecting ears (16) has two connected ears (16) symmetrically arranged.

4. A wire rope performance testing fixture according to claim 1, characterized in that: A first bearing (5) is installed on the inner side of the housing (1) corresponding to the adjusting disk (3), and the first bearing (5) is interference-connected with the adjusting disk (3).

5. A wire rope performance testing fixture according to claim 1, characterized in that: A clamping groove is provided at one end of the clamping claw (6) close to the through hole (2), and an anti-slip tooth (11) perpendicular to the axial position of the through hole (2) is fixedly connected to the inner side of the clamping groove.

6. A wire rope performance testing fixture according to claim 1, characterized in that: A second bearing (15) is installed at the joint between the adjusting shaft (13) and the housing (1), and the second bearing (15) is interference-connected with the adjusting shaft (13).

7. A wire rope performance testing fixture according to claim 1, characterized in that: The top end of the adjusting shaft (13) protrudes from the housing (1), and a plug hole is provided at the top end of the adjusting shaft (13).

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