CN210665364U

CN210665364U - Adjustable opposite-grinding clamp for simulating crossing angle of different strand wires of steel wire rope

Info

Publication number: CN210665364U
Application number: CN201921292331.1U
Authority: CN
Inventors: 韩潇然; 刘辉; 王慧
Original assignee: University of Jinan
Current assignee: University of Jinan
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-06-02
Anticipated expiration: 2029-08-12

Abstract

The utility model discloses an adjustable opposite grinding clamp for simulating the crossing angle of different strand wires of a steel wire rope, which comprises an upper clamp and a lower clamp, wherein the upper clamp consists of an upper connecting plate, a steel wire clamping piece, an inner hexagonal cylindrical head screw, a cylindrical pin, a connecting shaft, a light spring washer and a boss; the lower clamp comprises a dial, a lower connecting plate, a hexagon nut, a spring washer, an inner hexagon socket head cap screw, a steel wire clamping piece, a boss, a cylindrical pin and a hexagon socket head shaft shoulder screw. The clamp can simulate the real contact state of the outer layer side wire point contact of the braided steel wire rope strand, the cross angle adjusting range is wide, and the friction and wear tests of different cross angles of different strand wires of the steel wire rope can be well simulated.

Description

Adjustable opposite-grinding clamp for simulating crossing angle of different strand wires of steel wire rope

Technical Field

The utility model belongs to the anchor clamps field, concretely relates to grind anchor clamps with adjustable simulation wire rope different strand silk crossing angle.

Background

The braided steel wire rope has the advantages of high strength, strong anti-twisting property, good flexibility and the like due to the unique braided structure, and is widely applied to tension stringing construction. In the stringing operation process, the contact between the strands of the braided steel wire rope is point contact between different strand wires, and the braided steel wire rope is complex in use working condition and repeatedly subjected to the comprehensive actions of various loads such as stretching, bending and twisting, so that the point contact abrasion of the different strand wires of the rope body is the most serious, and the fatigue fracture failure of the steel wire rope is accelerated. The research shows that the crossing angle between the wires has a significant influence on the friction and wear of the steel wire rope, so that the friction and wear performance of different crossing angles between different strands of the braided steel wire rope needs to be researched.

The multifunctional friction wear testing machine is an integrated system capable of performing various tribological performance tests, can realize the friction wear tests with various standards and special customization on the same equipment, and can realize the detection from the micro-scale to the macro-scale due to the modularized design. The combination of multiple technologies results in more comprehensive data collection and analysis capabilities. The tested sample can automatically move in a friction and wear mode in a mechanical testing area and a morphological surface analysis area in a programming mode, and the comprehensive surface analysis can automatically measure the attributes of wear volume, surface roughness, three-dimensional morphology, surface chemistry (Raman) and the like and the data related to friction and wear.

In the existing multifunctional friction wear testing machine, the single type of the clamp is considered, and a special steel wire pair grinding clamp is rarely used for simulating the real contact state of different strand wires of a steel wire rope. In addition, no steel wire opposite grinding clamp with an adjustable crossing angle exists in the existing clamp, so that an adjustable opposite grinding clamp simulating the crossing angle of different strands of steel wire ropes needs to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a to grinding anchor clamps with adjustable simulation wire rope different strand rope silk crossing angle, its true contact state that can solve the simulation and weave the different strand rope silk of wire rope researches the frictional wear performance who weaves the different strand rope silk of wire rope.

In order to achieve the above purpose, the utility model provides a following technical scheme: an adjustable opposite grinding clamp for simulating the crossing angle of different strand wires of a steel wire rope comprises an upper clamp and a lower clamp; the upper clamp consists of an upper connecting plate, a steel wire clamping sheet, an inner hexagonal socket head cap screw, a cylindrical pin, a connecting shaft, a light spring washer and a boss; the upper connecting plate is connected with the connecting shaft through threads; and the contact area at the connection is increased by a lightweight spring washer. The steel wire clamping piece is used for straightening and fixing the steel wire on the boss through an inner hexagonal socket head cap screw; the lower clamp comprises a dial, a lower connecting plate, a hexagon nut, a spring washer, an inner hexagon socket head cap screw, a steel wire clamping piece, a boss, a cylindrical pin and a hexagon socket head shaft shoulder screw. The dial is fixed on the friction wear testing machine, and the cylindric lock is used for the location of boss on lower connecting plate.

Preferably, the connecting shaft of the upper clamp may be mounted to a multifunctional frictional wear tester.

Preferably, 2 sections of arc grooves on the same circumference are formed on the dial, and scale marks are carved at the outer ends of the arc grooves.

Preferably, the fit between the hexagonal socket head shoulder screw and the arc groove is clearance fit.

Preferably, the positions of the left and right 2 hexagonal socket head shoulder screws in the arc grooves are adjusted, so that different intersection angles of the upper and lower steel wires are adjusted.

Preferably, the scale division value on the scale disc is 1^o。

Preferably, circular grooves with certain radius are formed in the arc-shaped bosses, so that the steel wire can be axially positioned. The steel wires were allowed to make stable contact during the test.

Preferably, the steel wire clamping piece clamps and fixes the steel wire on the boss through an inner hexagonal socket head cap screw.

The beneficial effects of the utility model reside in that:

1. the friction and wear performance of different steel wire crossing angles under the sliding condition of the steel wire is researched by adjusting the crossing angle of the steel wire and the wire pair during grinding, and the influence of the crossing angle on the fretting fatigue behavior of the steel wire is further researched mainly by changing the friction coefficient under different crossing angles and carrying out quantitative analysis on the wear depth and the wear volume.

2. The clamp is simple in overall structure, few in parts and convenient to detach and replace on the multifunctional friction wear testing machine.

Drawings

FIG. 1 is a schematic illustration of an experiment;

FIG. 2 is a front view of an upper clamp assembly;

FIG. 3 is a bottom view of the upper clamp assembly;

FIG. 4 is a front view of a lower clamp assembly;

FIG. 5 is a top view of a lower clamp assembly;

FIG. 6 is a front view of the boss;

FIG. 7 is a top view of the boss;

description of reference numerals:

the steel wire clamping piece comprises an upper connecting plate 1, a steel wire clamping piece 2, an inner hexagonal socket head cap screw 3, a cylindrical pin 4, a connecting shaft 5, a light spring washer 6, a boss 7, a dial 8, a lower connecting plate 9, a hexagonal nut 10, a spring washer 11, an inner hexagonal socket head cap screw 12, a steel wire clamping piece 13, a boss 14, a cylindrical pin 15 and a hexagonal socket head shaft shoulder screw 16.

Detailed Description

The preferred embodiment of the adjustable opposite grinding fixture for simulating the crossing angle of the different strands of the steel wire rope according to the present invention will be described in detail with reference to fig. 1 to 7 (attached drawings).

As shown in fig. 1-7, the adjustable opposite grinding clamp for simulating the crossing angle of different strand wires of a steel wire rope mainly comprises an upper clamp and a lower clamp; the upper clamp comprises an upper connecting plate 1, a steel wire clamping sheet 2, an inner hexagonal socket head cap screw 3, a cylindrical pin 4, a connecting shaft 5, a light spring washer 6 and a boss 7. 4 threaded holes of M5 and 1 threaded hole of M12 are formed in the upper connecting plate 1; the lower clamp comprises a dial 8, a lower connecting plate 9, a hexagonal nut 10, a spring washer 11, an inner hexagonal socket head cap screw 12, a steel wire clamping sheet 13, a boss 14, a cylindrical pin 15 and a hexagonal socket head shaft shoulder screw 16.

Specifically, in the clamp process under the assembly, should fix boss 14 on connecting plate 9 under through 2 cylindric locks earlier, pass through the steel wire with the one end of steel wire after the piece is fastened to the steel wire, press from both sides tightly the steel wire through 2 hexagon socket head cap head. And then the dial plate 8 is correspondingly arranged on a test bed of the friction wear testing machine.

Specifically, 2 sections of arc grooves on the same arc are formed in the dial 8, after the boss 14 and the lower connecting plate 9 are assembled, the test angle between the boss and the dial 8 is adjusted, after the adjustment is completed, the boss and the lower connecting plate are fixed on the dial through the spring washer 11 and the left and right 2 hexagonal cylindrical head shoulder screws 16, and the 2 hexagonal cylindrical head shoulder screws 16 are in clearance fit with the arc grooves on the scales.

Specifically, the middle of each of the 2 hexagonal cylindrical head shoulder screws 16 is a polished rod, and the bottom of each of the 2 hexagonal cylindrical head shoulder screws is provided with threads.

Specifically, in the process of preparing the test fixture, the boss 7 should be fixed on the upper connecting plate 1 through 2 cylindrical pins 4, then the steel wire used for the test is placed on the boss 7, and the steel wire is straightened respectively through 2 steel wire clamping sheets and then fixed on the boss through 4 hexagon socket head cap screws 3. And finally, connecting the connecting shaft 5 with the upper connecting plate 1 through threads, and fixing the connecting shaft 5 through a supporting rod on a friction wear testing machine, so that the installation of the upper clamp is completed.

Preferably, for assembly convenience, the lower jig should be installed first, and then the upper jig should be installed. And finally, adjusting the contact position of the upper steel wire and the lower steel wire.

Preferably, in order to better simulate the opposite abrasion between the steel wires during the assembly process, the bosses 7 and the bosses 14 are parallel to each other, so that the lower connecting plate 9 is rotated counterclockwise by an angle of

Then the crossing angle between the actual filaments is the

。

Preferably, the

bosses

7 and 14 are provided with circular grooves with a certain radius, so as to axially position the steel wires. The steel wires were allowed to make stable contact during the test.

Those skilled in the art will readily appreciate that the above-described preferred embodiments may be freely combined, superimposed, without conflict.

It will be understood that the above-described embodiments are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions may be made in the details described herein by those skilled in the art without departing from the basic principles of the invention.

Claims

1. The utility model provides a wear anchor clamps with adjustable different strand rope silk crossing angle of simulation wire rope which characterized in that: comprises an upper clamp and a lower clamp; the upper clamp consists of an upper connecting plate, a steel wire clamping sheet, an inner hexagonal socket head cap screw, a cylindrical pin, a connecting shaft, a light spring washer and a boss; the connecting plate is connected with the connecting shaft through threads; the steel wire clamping piece fixes the steel wire on the boss through an inner hexagonal socket head cap screw; the lower clamp comprises a dial, a lower connecting plate, a hexagon nut, a spring washer, an inner hexagon socket head cap screw, a steel wire clamping piece, a boss, a cylindrical pin and a hexagon socket head shoulder screw, the dial is fixed on the friction wear testing machine, and the cylindrical pin is used for positioning the boss on the lower connecting plate.

2. The adjustable opposite-grinding clamp for simulating the intersection angle of different strand wires of the steel wire rope according to claim 1, is characterized in that: the connecting shaft of the upper clamp can be installed on a multifunctional friction and wear testing machine.

3. The adjustable opposite-grinding clamp for simulating the intersection angle of different strand wires of the steel wire rope according to claim 1, is characterized in that: the dial is provided with 2 sections of arc grooves on the same circumference, and the outer ends of the arc grooves are marked with scale lines.

4. The adjustable opposite-grinding clamp for simulating the intersection angle of different strand wires of the steel wire rope according to claim 1, is characterized in that: the hexagonal cylindrical head shaft shoulder screw and the arc groove are in clearance fit.

5. The adjustable opposite-grinding clamp for simulating the intersection angle of different strand wires of the steel wire rope according to claim 1, is characterized in that: the positions of the left and right 2 hexagonal socket head shaft shoulder screws in the arc grooves are adjusted, so that different crossing angles of the upper and lower steel wires are adjusted.

6. The adjustable opposite-grinding clamp for simulating the intersection angle of the different strand wires of the steel wire rope according to claim 3, characterized in that: the division value on the dial is 1^o。

7. The adjustable opposite-grinding clamp for simulating the intersection angle of different strand wires of the steel wire rope according to claim 1, is characterized in that: the steel wire clamping piece clamps and fixes the steel wire on the boss through the inner hexagonal socket head cap screw.