Fatigue testing device for steel wire rope of rope saw
By designing a wire saw wire rope fatigue testing device with a simple structure, the periodic stress changes of the wire rope are achieved by using the slider and crank slider mechanism, the problems of low testing efficiency and complex equipment in the prior art are solved, and efficient and convenient fatigue testing is achieved.
Patent Information
- Application Number
- CN202420630592.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-29
AI Technical Summary
In the prior art, the fatigue testing efficiency of the wire saw wire rope is low and the equipment structure is complex, resulting in high equipment costs and maintenance costs.
A wire saw wire rope fatigue testing device with a simple structure is designed, including the main frame, guide column, slider, winding plate, winding plate, fixing group and counterweight assembly. The slider is driven to slide back and forth through the crank slide mechanism to achieve periodic stress changes of the wire rope.
It realizes efficient fatigue testing of wire saw wire ropes, reduces equipment maintenance costs, and supports simultaneous testing of multiple sets of wire ropes, which is convenient and efficient.
Smart Images
Figure CN222579862U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a fatigue test device for wire ropes of a wire saw. Background Art
[0002] The fatigue strength refers to the maximum stress that a material can withstand under an infinite number of cyclic loadings without failure, which is called the fatigue strength or fatigue limit. In fact, it is impossible to conduct an infinite number of cyclic loading tests on metal materials. During the working process of mechanical parts, the stress at each point changes periodically with time, and this stress that changes periodically with time is called alternating stress (also known as cyclic stress). Under the action of alternating stress, although the stress borne by the part is lower than the yield point of the material, the phenomenon of crack generation or sudden complete fracture after a long time of work is called the fatigue of metals.
[0003] In the production process of wire saws, wire ropes are one of the essential materials for wire saws. Before assembly, it is necessary to pre-test the fatigue strength of the wire ropes. Currently, on the market, a fatigue testing machine is used to conduct fatigue tests on a group of wire ropes at a time, with low efficiency, complex structure, and very high equipment costs and subsequent maintenance costs. Content of the Utility Model
[0004] In view of the deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a fatigue test device for wire ropes of a wire saw, which is not only simple and reasonable in structure but also efficient and convenient.
[0005] To solve the above technical problems, the technical solution of the utility model is: a fatigue test device for wire ropes of a wire saw, including a main frame, on which guide columns are fixedly provided and a slider is slidably connected through the guide columns. At least one vertically placed winding plate is fixedly provided on the slider. Three winding discs are arranged in a "pin" shape on each winding plate. The winding discs are rotatably connected to the winding plate, and a winding groove for the wire rope to bypass is provided along the outer periphery of each winding disc. Fixing groups for fixing one end of the wire rope and a counterweight group for tensioning the other end of the wire rope are respectively arranged at both ends of the main frame. The side end of the slider is driven by a crank-slider mechanism to reciprocate on the guide column.
[0006] Further, the fixing group includes a support frame fixedly connected to the top of the main frame. A fixing block is fixedly provided on the support frame. A through hole for the wire rope to pass through is penetrated in the fixing block. A fixing screw is screwed into the fixing block from top to bottom and extends into the through hole to fix the wire rope tightly.
[0007] Further, the counterweight group includes two inclined brackets fixedly connected to the main frame. The tops of the two inclined brackets are connected through a guide roller. A counterweight guide wheel is rotatably connected to the guide roller. The wire rope is wound around the counterweight guide wheel and a counterweight block is suspended at the end.
[0008] Furthermore, the counterweight guide wheel is provided with an annular groove concave inwardly along its outer circumference to facilitate the wire rope to pass around.
[0009] Furthermore, the winding disks are sequentially arranged along the direction from the fixed end of the wire rope to the counterweight end: the first winding disk, the second winding disk, and the third winding disk. After the wire rope passes around the bottom of the first winding disk, it extends upward to pass around the top of the second winding disk, and then extends downward to pass around the bottom of the third winding disk.
[0010] Furthermore, the crank slider mechanism includes a connecting rod hinged to the side end of the slider, the other end of the connecting rod is hinged to a crank, and the other end of the crank is connected to the rotating shaft of a motor and driven to rotate thereby.
[0011] Furthermore, the side wall of the wrapping plate is connected to the upper surface of the slider via a triangular reinforcement plate.
[0012] Furthermore, the winding plates are arranged in three groups at intervals.
[0013] Compared with the prior art, the utility model has the following beneficial effects: the wire rope fatigue testing device for a rope saw has a simple structure, effectively reduces the maintenance cost of the equipment and can test multiple groups of wire ropes at the same time, which is convenient and efficient.
[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;
[0016] Figure 2 for Figure 1 A is an enlarged schematic diagram;
[0017] Figure 3 It is a top view schematic diagram of the sliding connection between the slider and the guide post in the embodiment of the utility model;
[0018] Figure 4 It is a side view of the winding plate in the embodiment of the utility model.
[0019] In the figure: 1-main frame, 2-guide column, 3-slider, 4-winding plate, 5-winding disc, 6-winding groove, 7-fixing group, 8-counterweight group, 9-crank slider mechanism, 10-support frame, 11-fixing block, 12-through hole, 13-fixing screw, 14-oblique bracket, 15-guide roller, 16-counterweight guide wheel, 17-counterweight block, 18-annular groove, 19-first winding disc, 20-second winding disc, 21-third winding disc, 22-connecting rod, 23-crank, 24-motor, 25-reinforcement plate, 26-wire rope. DETAILED DESCRIPTION
[0020] To make the above features and advantages of the present utility model more obvious and understandable, specific embodiments are hereinafter given and described in detail in conjunction with the accompanying drawings as follows.
[0021] As Figures 1 to 4 shown, the rope saw wire rope fatigue testing device includes a main frame 1. A guide post 2 is fixedly arranged on the main frame, and a slider 3 is slidably connected to the guide post through the guide post. At least one vertically placed winding plate 4 is fixedly arranged on the slider. Three winding discs 5 are arranged in a "pin" shape on the winding plate. The winding discs are all rotatably connected to the winding plate, and a winding groove 6 for the wire rope to bypass is formed in a ring shape along the outer circumference of the winding disc. Fixed groups 7 for fixing one end of the wire rope and a counterweight group 8 for tensioning the other end of the wire rope are respectively arranged at both ends of the main frame. The side end of the slider is driven to reciprocate on the guide post through a crank-slider mechanism 9.
[0022] In an embodiment of the present utility model, the fixed group includes a support frame 10 fixedly connected to the top of the main frame. A fixed block 11 is fixedly arranged on the support frame. A through hole 12 for the wire rope to pass through is formed through the fixed block. A fixing screw 13 is screwed into the fixed block from top to bottom and extends into the through hole to fix the wire rope tightly.
[0023] In an embodiment of the present utility model, the counterweight group includes two inclined brackets 14 fixedly connected to the main frame. The tops of the two inclined brackets are connected through a guide roller 15. A counterweight guide wheel 16 is rotatably connected to the guide roller. The wire rope is wound around the counterweight guide wheel and a counterweight block 17 is suspended at the end.
[0024] In an embodiment of the present utility model, an annular groove 18 for the wire rope to bypass is concavely arranged inward along the outer circumference of the counterweight guide wheel.
[0025] In an embodiment of the present utility model, the winding discs are the first winding disc 19, the second winding disc 20, and the third winding disc 21 in sequence from the fixed end to the counterweight end of the wire rope. The wire rope extends upward after bypassing the bottom of the first winding disc, then extends downward after bypassing the top of the second winding disc, and then extends downward after bypassing the bottom of the third winding disc.
[0026] In an embodiment of the present utility model, the crank-slider mechanism includes a connecting rod 22 hinged to the side end of the slider. The other end of the connecting rod is hinged to a crank 23. The other end of the crank is connected to the rotating shaft of a motor 24 and is driven to rotate by the motor.
[0027] In an embodiment of the present utility model, the side wall of the winding plate and the upper surface of the slider are connected through a triangular reinforcing plate 25.
[0028] In an embodiment of the utility model, the winding plates are arranged in three groups at intervals, and the fixed blocks and counterweight guide wheels correspond to the winding plates one by one, and three groups are arranged at the same intervals, and the winding plates, fixed blocks and counterweight guide wheels of each group are in the same plane to ensure that the test of the wire rope does not produce unnecessary variables.
[0029] The working principle of the embodiment of the utility model is as follows: during the test, one end of the wire rope 26 is first passed through the through hole, and the fixing screw is tightened to fix the wire rope. The other end of the wire rope is passed around the three winding disks in sequence, and finally passed around the counterweight guide wheel and then hung vertically to connect with the counterweight block to tighten the wire rope. Three corresponding groups of wire ropes can be installed at the same time for variable testing. After installation, the motor can be started. The motor drives the crank to rotate and then drives the slider to reciprocate on the guide column, so that the winding plate reciprocates to make the stress on the wire rope change periodically, and finally the fatigue strength of the wire rope can be measured.
[0030] The utility model is not limited to the above-mentioned best implementation mode. Anyone can derive other various forms of wire saw wire rope fatigue testing devices under the inspiration of the utility model. All equivalent changes and modifications made according to the scope of the patent application of the utility model shall fall within the scope of the utility model.
Claims
1. Rope saw wire rope fatigue testing device, characterized by: It includes a main frame, on which guide columns are fixedly installed and a slider is slidably connected through the guide columns. At least one vertically placed winding plate is fixedly installed on the slider. Three winding discs are arranged in a "pin" shape on each winding plate. The winding discs are all rotatably connected to the winding plate, and annular winding grooves are formed along their outer peripheries to facilitate the winding of the steel wire rope. Fixed groups for fixing one end of the steel wire rope and a counterweight group for tensioning the other end of the steel wire rope are respectively arranged at both ends of the main frame. The side end of the slider is driven by a crank-slider mechanism to reciprocally slide on the guide column.
2. The wire rope fatigue testing device for a wire saw according to claim 1, characterized in that: The fixed group includes a support frame fixedly connected to the top of the main frame. A fixed block is fixedly installed on the support frame. A through hole for the steel wire rope to pass through is formed through the fixed block. A fixing screw is screwed into the top of the fixed block from top to bottom and extends into the through hole to fix the steel wire rope tightly.
3. The wire rope fatigue testing device for a wire saw according to claim 1, characterized in that: The counterweight group includes two inclined brackets fixedly connected to the main frame. The tops of the two inclined brackets are connected through a guide roller. A counterweight guide wheel is rotatably connected to the guide roller. The steel wire rope is wound around the counterweight guide wheel and a counterweight block is suspended at the end.
4. The wire rope fatigue testing device for a wire saw according to claim 3, characterized in that: An annular groove is concavely arranged along the outer periphery of the counterweight guide wheel to facilitate the winding of the steel wire rope.
5. The wire rope fatigue testing device for a wire saw according to claim 1, characterized in that: The winding discs are, in sequence from the fixed end to the counterweight end of the steel wire rope, the first winding disc, the second winding disc, and the third winding disc. The steel wire rope extends upward after passing around the bottom of the first winding disc, then extends downward after passing around the top of the second winding disc, and then extends downward after passing around the bottom of the third winding disc.
6. The wire rope fatigue testing device for a wire saw according to claim 1, characterized in that: The crank-slider mechanism includes a connecting rod hinged to the side end of the slider. The other end of the connecting rod is hinged to a crank. The other end of the crank is connected to the rotating shaft of a motor and is driven to rotate by it.
7. The wire rope fatigue testing device for a wire saw according to claim 1, characterized in that: The side wall of the winding plate and the upper surface of the slider are connected through a triangular reinforcing plate.
8. The wire rope fatigue testing device for a wire saw according to claim 1, characterized in that: Three groups of the winding plates are arranged at intervals.