Mining steel wire rope fatigue experiment device

Abstract

The utility model belongs to the technical field of steel wire rope fatigue test, and particularly relates to a mining steel wire rope fatigue test device, which comprises a base, a guide plate fixedly mounted on a fixing frame, a rotating rod mounted on an output shaft of a motor, a cam fixedly sleeved on the outer wall of the rotating rod, a guide rod assembled in a guide groove, and a motor mounted on the guide rod. A lifting frame is mounted on the connecting block, the cam rotates to drive the mounting block to drive the first connecting seat and the second connecting seat on the mounting block to reciprocate in the vertical direction, the first connecting seat and the second connecting seat pull the steel wire rope to reciprocate and bend, and the fatigue fracture capacity of the steel wire rope under the action of cyclic load is tested; the control panel drives the hydraulic cylinder to operate, the force is gradually increased until the steel wire rope is broken, the fatigue fracture capability of the steel wire rope under the tensile effect is tested, the structure can perform comprehensive fatigue test on the steel wire rope, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel wire rope fatigue testing, in particular to a mining steel wire rope fatigue testing device. Background Art

[0002] Port machinery refers to mechanical equipment used for loading and unloading cargo at ports. When conducting mining projects, steel wire ropes are required. Before the steel wire ropes are used, fatigue test equipment is required to simulate the bending and stretching movements that the steel wire ropes may encounter in actual use, so as to evaluate the steel wire ropes' ability to withstand bending and stretching fatigue.

[0003] A Chinese patent with authorization publication number CN 109142038 B discloses a wire rope bending fatigue test device, comprising a frame, a driving wheel, a test wheel, a guide wheel, a counterweight wheel, a control box, and a drive device for driving the driving wheel. The counterweight wheel is mounted on the wheel frame. A fixed block is provided on the frame above the counterweight wheel. The fixed block has a vertical slot. The upper end of the wheel frame is slidably connected to the slot, and the lower end of the wheel frame is connected to a servo drive device for driving the wheel frame to move up and down. The servo drive device is electrically connected to the control box. A tension sensor is mounted on the test wheel, and the tension sensor is electrically connected to the control box. The present invention uses the tension sensor to collect the tension of the wire rope to be tested in real time, and drives the wheel frame to move up and down by using a servo electric cylinder to provide a certain amount of compensation during the up and down sliding of the wire rope to be tested, thereby ensuring that the tension of the wire rope to be tested is constant during the test, thereby improving the accuracy of the test data.

[0004] The existing fatigue test device for mining steel wire ropes can usually only perform a single bending fatigue test or a tensile fatigue test during the test of the steel wire rope, and cannot perform a comprehensive fatigue test on the steel wire rope, resulting in poor practicality of the device. Therefore, a fatigue test device for mining steel wire ropes is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems existing in the prior art, the utility model proposes a fatigue test device for a mining steel wire rope.

[0006] The cam is provided with a guide groove, and the guide groove is provided with a guide groove, and the guide groove is provided with a guide groove, and the guide groove is provided with a guide groove. The guide groove is provided with a guide groove, and the guide groove is provided with a guide groove. The guide groove is provided with a guide groove, and the guide groove is provided with a guide groove. The guide groove is provided with a guide groove. The guide groove is provided with a guide groove. The cam is driven by the said mounting block, and the first connecting seat and the second connecting seat are driven by the said mounting block to drive the first connecting seat and the second connecting seat to pull the said wire rope back and forth, and the fatigue fracture of the said wire rope caused by the cyclic load; the hydraulic cylinder is driven by the control control panel to operate, and the force is gradually increased until the said wire rope breaks, so as to test the fatigue fracture of the said wire rope caused by the tensile force; the hydraulic cylinder is driven by the control panel to operate, and the force is gradually increased until the said wire rope breaks, so as to test the fatigue fracture of the said wire rope caused by the tensile force; the hydraulic cylinder can be used for comprehensive fatigue testing of the said wire rope, which is beneficial to improving the practicality of the device.

[0007] Preferably, a protective box is installed on the base, the material of the protective box is explosion-proof glass, a box door is installed on the side wall of the protective box, a console is installed on the base, a control panel is installed on the console, and the control panel is connected to the motor and the hydraulic cylinder through an internal circuit. By installing the protective box on the periphery of the fixed frame, the explosion-proof glass on it is a special glass that can prevent violent impact. The explosion-proof glass can block the flying steel wire to prevent the steel wire from stabbing or cutting people, which is beneficial to improving the protectiveness of the device.

[0008] The utility model is beneficial in that:

[0009] 1. The utility model drives the mounting block to move back and forth in the vertical direction by rotating the cam, and the first connecting seat and the second connecting seat thereon are driven. The first connecting seat and the second connecting seat pull the wire rope to move back and forth in bending, so as to test the fatigue fracture capacity of the wire rope under the action of cyclic load; the hydraulic cylinder is driven to operate by the control panel, and the force is gradually increased until the wire rope breaks, so as to test the fatigue fracture capacity of the wire rope under the action of tension. This structure can carry out a comprehensive fatigue test on the wire rope, which is beneficial to improving the practicality of the device.

[0010] 2. The utility model installs a protective box on the periphery of the fixed frame. The explosion-proof glass on the protective box is a special glass that can prevent violent impact. The explosion-proof glass can block the flying steel wire to prevent the steel wire from stabbing or cutting people, which is beneficial to improving the protection of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 It is a schematic diagram of a first-person perspective three-dimensional structure;

[0013] Figure 2 Schematic diagram of the experimental three-dimensional structure;

[0014] Figure 3 Schematic diagram of the three-dimensional structure of the guide plate;

[0015] Figure 4 It is a schematic diagram of the three-dimensional structure of the hydraulic cylinder;

[0016] Figure 5 It is a schematic diagram of the three-dimensional structure of the protective box.

[0017] In the figure: 1. Base; 2. Fixed frame; 3. Guide plate; 4. Motor; 5. Rotating rod; 6. Cam; 7. Guide groove; 8. Guide rod; 9. Connecting block; 10. Lifting frame; 11. Mounting block; 12. First connecting seat; 13. Second connecting seat; 14. Slide groove; 15. Sliding plate; 16. Hydraulic cylinder; 17. Hydraulic rod; 18. Support frame; 19. First rotating shaft; 20. Lower pulley; 21. First mounting seat; 22. Second rotating shaft; 23. Middle pulley; 24. Third mounting seat; 25. Third rotating shaft; 26. Upper pulley; 27. Protective box; 28. Box door; 29. ​​Console; 30. Control panel. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-4 As shown, a fatigue test device for a mining wire rope includes a base 1, a fixing frame 2 is installed on the base 1, a guide plate 3 is fixedly installed on the fixing frame 2, a motor 4 is installed on the outer wall of the guide plate 3 through a machine base, a rotating rod 5 is installed on the output shaft of the motor 4, a cam 6 is fixedly sleeved on the outer wall of the rotating rod 5, a guide groove 7 is opened inside the guide plate 3, a guide rod 8 is assembled in the guide groove 7, a connecting block 9 is welded to the side wall of the guide rod 8, a lifting frame 10 is installed on the connecting block 9, and the lifting frame 10 is located outside the cam 6. The outer wall of the cam 6 is in contact with the inner wall of the lifting frame 10, and a mounting block 11 is installed on the guide rod 8. The first connecting seat 12 and the second connecting seat 13 are symmetrically installed on the mounting block 11. The inner walls of the first connecting seat 12 and the second connecting seat 13 are provided with threads. A slide groove 14 is provided on the bottom plate of the fixed frame 2. A sliding plate 15 is assembled in the slide groove 14. A hydraulic cylinder 16 is installed on the inner wall of the slide groove 14. A hydraulic rod 17 is installed on the hydraulic cylinder 16. The hydraulic rod 17 is fixedly connected to the side wall of the sliding plate 15. The sliding plate 15 is provided with a support frame 1 8. A first rotating shaft 19 is rotatably mounted on the support frame 18. A lower pulley 20 is fixedly mounted on the periphery of the first rotating shaft 19. A first mounting seat 21 is symmetrically mounted on the side wall of the fixed frame 2. A second rotating shaft 22 is rotatably mounted on the first mounting seat 21. A middle pulley 23 is fixedly mounted on the periphery of the second rotating shaft 22. A third mounting seat 24 is symmetrically mounted on the side wall of the fixed frame 2. A third rotating shaft 25 is rotatably mounted on the third mounting seat 24. An upper pulley 26 is fixedly mounted on the periphery of the third rotating shaft 25. When working, the existing mining In the process of testing the wire rope, the wire rope fatigue test device can usually only perform a single bending fatigue test or a tensile fatigue test, and cannot perform a comprehensive fatigue test on the wire rope, resulting in poor practicality of the device. The wire rope is installed by screwing the turnbuckle at one end of the wire rope into the second connecting seat 13, and then the wire rope passes around the lower pulley 20, then around the left side of the middle pulley 23, and then around from above the upper pulley 26, and finally the turnbuckle at the other end of the wire rope is screwed into the first connecting seat 12.

[0020] When the bending fatigue test of the steel wire rope is carried out, the motor 4 is operated to drive the cam 6 to rotate, and the cam 6 pushes the lifting frame 10 to reciprocate in the vertical direction. The lifting frame 10 drives the connecting block 9 to reciprocate in the vertical direction. The connecting block 9 drives the guide rod 8 to reciprocate in the vertical direction. The guide rod 8 drives the mounting block 11 to reciprocate in the vertical direction. The mounting block 11 drives the first connecting seat 12 and the second connecting seat 13 thereon to reciprocate in the vertical direction. The first connecting seat 12 and the second connecting seat 13 pull the steel wire rope to reciprocate and bend, so as to test the fatigue fracture capacity of the steel wire rope caused by cyclic load.

[0021] When the wire rope is subjected to a tensile fatigue test, the hydraulic cylinder 16 is driven to operate through the control panel 30, the hydraulic rod 17 pushes the sliding plate 15 to move horizontally, the sliding plate 15 drives the support frame 18 to move horizontally, the support frame 18 drives the lower pulley 20 thereon to move horizontally, the lower pulley 20 stretches the wire rope, and the control panel 30 drives the hydraulic cylinder 16 to operate, gradually increasing the force until the wire rope breaks. The control panel 30 records the force value that the wire rope bears when it breaks, and tests the fatigue fracture capacity of the wire rope caused by tension. This structure can carry out a comprehensive fatigue test on the wire rope, which is conducive to improving the practicality of the device.

[0022] See also Figure 5 As shown, a protective box 27 is installed on the base 1, and the material of the protective box 27 is explosion-proof glass. A box door 28 is installed on the side wall of the protective box 27, and a console 29 is installed on the base 1. A control panel 30 is installed on the console 29, and the control panel 30 is connected to the motor 4 and the hydraulic cylinder 16 through an internal circuit; when working, the existing wire rope fatigue test device does not have a protective structure in the process of testing the wire rope. When the wire rope breaks, the flying wire may directly stab or cut people, resulting in poor protection of the device. By installing a protective box 27 on the periphery of the fixed frame 2, the explosion-proof glass thereon is a special glass that can prevent violent impact. The explosion-proof glass can block the flying wire to prevent the wire from stabbing or cutting people, which is beneficial to improving the protection of the device.

[0023] Working principle: In the process of testing the wire rope, the existing mining wire rope fatigue test device can usually only perform a single bending fatigue test or a tensile fatigue test, and cannot perform a comprehensive fatigue test on the wire rope, resulting in poor practicality of the device. The turnbuckle at one end of the wire rope is screwed into the second connecting seat 13, and then the wire rope is passed around the lower pulley 20, and then around the left side of the middle pulley 23, and then passed from above the upper pulley 26, and finally the turnbuckle at the other end of the wire rope is screwed into the first connecting seat 12 to achieve the installation of the wire rope; when testing the wire rope, the turnbuckle at one end of the wire rope is screwed into the second connecting seat 13, and then the wire rope is passed around the lower pulley 20, and then around the left side of the middle pulley 23, and then around ... installed When the rope is subjected to bending fatigue test, the motor 4 is operated to drive the cam 6 to rotate, and the cam 6 pushes the lifting frame 10 to move back and forth in the vertical direction, and the lifting frame 10 drives the connecting block 9 to move back and forth in the vertical direction, and the connecting block 9 drives the guide rod 8 to move back and forth in the vertical direction, and the guide rod 8 drives the mounting block 11 to move back and forth in the vertical direction, and the mounting block 11 drives the first connecting seat 12 and the second connecting seat 13 thereon to move back and forth in the vertical direction, and the first connecting seat 12 and the second connecting seat 13 pull the wire rope to move back and forth in bending, and the test wire rope is subjected to cyclic load. When the wire rope is subjected to a tensile fatigue test, the hydraulic cylinder 16 is driven by the control panel 30, and the hydraulic rod 17 pushes the sliding plate 15 to move horizontally. The sliding plate 15 drives the support frame 18 to move horizontally, and the support frame 18 drives the lower pulley 20 thereon to move horizontally. The lower pulley 20 stretches the wire rope, and the control panel 30 drives the hydraulic cylinder 16 to operate, gradually increasing the force until the wire rope breaks. The control panel 30 records the force value when the wire rope breaks, and tests the fatigue fracture capacity of the wire rope caused by tension. force; this structure can conduct a comprehensive fatigue test on the wire rope, which is beneficial to improving the practicality of the device; the existing wire rope fatigue test device does not have a protective structure during the test of the wire rope. When the wire rope breaks, the flying wire may directly stab or cut people, resulting in poor protection of the device. By installing a protective box 27 on the periphery of the fixed frame 2, the explosion-proof glass on it is a special glass that can prevent violent impact. The explosion-proof glass can block the flying wire to prevent the wire from stabbing or cutting people, which is beneficial to improving the protection of the device.

[0024] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A fatigue test device for mining wire ropes, characterized by: The invention comprises a base (1), a fixing frame (2) is installed on the base (1), a guide plate (3) is fixedly installed on the fixing frame (2), a motor (4) is installed on the outer wall of the guide plate (3) through the machine base, a rotating rod (5) is installed on the output shaft of the motor (4), a cam (6) is fixedly sleeved on the outer wall of the rotating rod (5), a guide groove (7) is opened inside the guide plate (3), a guide rod (8) is assembled in the guide groove (7), a connecting block (9) is welded to the side wall of the guide rod (8), a lifting frame (10) is installed on the connecting block (9), and the lifting frame (10) is located outside the cam (6). The outer wall of the cam (6) is in contact with the inner wall of the lifting frame (10), the guide rod (8) is provided with a mounting block (11), the mounting block (11) is symmetrically provided with a first connecting seat (12) and a second connecting seat (13), the inner walls of the first connecting seat (12) and the second connecting seat (13) are provided with threads, a slide groove (14) is provided on the bottom plate of the fixing frame (2), a sliding plate (15) is assembled in the slide groove (14), a hydraulic cylinder (16) is provided on the inner wall of the slide groove (14), a hydraulic rod (17) is provided on the hydraulic cylinder (16), and the hydraulic rod (17) is fixedly connected to the side wall of the sliding plate (15).

2. A fatigue test device for mining wire ropes according to claim 1, characterized in that: A support frame (18) is mounted on the sliding plate (15), a first rotating shaft (19) is rotatably mounted on the support frame (18), and a lower pulley (20) is fixedly sleeved on the periphery of the first rotating shaft (19).

3. A fatigue test device for mining wire ropes according to claim 1, characterized in that: A first mounting seat (21) is symmetrically mounted on the side wall of the fixing frame (2), a second rotating shaft (22) is rotatably mounted on the first mounting seat (21), and a middle pulley (23) is fixedly sleeved around the outer periphery of the second rotating shaft (22).

4. A fatigue test device for mining wire ropes according to claim 1, characterized in that: A third mounting seat (24) is symmetrically mounted on the side wall of the fixing frame (2), a third rotating shaft (25) is rotatably mounted on the third mounting seat (24), and an upper pulley (26) is fixedly sleeved around the periphery of the third rotating shaft (25).

5. The fatigue test device for mining wire rope according to claim 1, characterized in that: A protective box (27) is installed on the base (1). The material of the protective box (27) is explosion-proof glass. A box door (28) is installed on the side wall of the protective box (27).

6. A fatigue test device for mining wire ropes according to claim 1, characterized in that: A control console (29) is mounted on the base (1), a control panel (30) is mounted on the control console (29), and the control panel (30) is connected to the motor (4) and the hydraulic cylinder (16) via an internal circuit.

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