Steel wire rope fatigue testing machine

Abstract

The invention relates to the technical field of steel wire rope detection equipment and discloses a steel wire rope fatigue testing machine which comprises a supporting seat, a fixed wire wheel is arranged in the supporting seat, the two ends of a steel wire rope are fixed to the fixed wire wheel, the steel wire rope makes contact with the outer wall of a pulley and the outer wall of a second pulley, and the pulley rotates on the outer wall of a connecting block; a fixing rod supports a connecting block, a second fixing rod supports a third connecting block, a second pulley rotates on the outer wall of a first connecting rod, a connecting frame fixes the first connecting rod, when a fixing line wheel rotates back and forth, a steel wire rope is pulled through the second pulley, and a spring limits the connecting frame; the connecting frame swings with the connecting rod as the circle center, the spring simulates the elastic stress state of the steel wire rope in practical application so as to perform fatigue detection on the steel wire rope, the supporting seat is provided with a plurality of groups of testing assemblies, a plurality of steel wire ropes can be detected in the same experiment, the periodicity of the whole experiment is reduced, and the detection efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of fatigue testing machine technology, and in particular to a wire rope fatigue testing machine. Background Technology

[0002] A wire rope fatigue testing machine is a device used to test the ability of wire ropes to resist fatigue failure under repeated stress. It simulates the stress state of wire ropes in actual use, such as repeated tension, bending, or torsion, subjecting the wire rope to periodic loads until it breaks or fails, thereby evaluating its fatigue life and durability.

[0003] Existing wire rope fatigue testing machines typically only allow testing on a single wire rope, and each test only yields data for that single rope. If batch testing of wire rope performance is required, repeated loading and unloading of samples is necessary, significantly increasing testing time and labor costs, extending the overall testing cycle, and reducing testing efficiency. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a wire rope fatigue testing machine.

[0005] This application adopts the following technical solution: a wire rope fatigue testing machine, comprising: Support base, the support base comprising: Base; Support columns, with their lower ends fixedly mounted on the base; A fixed wire reel is generally cylindrical in shape. Several wire rope fixing seats are fixedly connected to the surface of the fixed wire reel. A first connecting shaft is fixedly connected to the central axis of the fixed wire reel. The two ends of the first connecting shaft are rotatably connected to a crossbeam. The two ends of the crossbeam are fixedly connected to a support column. Test components, the test components include: The first fixing rod is fixedly connected to the upper part of the support column; The second fixing rod is fixedly connected to the middle of the support column; Several connecting frames are provided, with the upper end of the connecting frame rotatably connected to the second fixed rod, the lower end of the connecting frame connected to one end of a spring, the other end of the spring fixedly connected to the first connecting block, and the first connecting block cooperating with the base. The second pulley is rotatably connected within the connecting frame; The power assembly includes: A motor assembly, wherein the motor assembly is fixedly connected to the base, and a rotating rod is fixedly connected to the output end of the motor assembly; A connecting component, the lower end of which is connected to a rotating rod, and the upper end of which is connected to a first connecting shaft.

[0006] Compared with the prior art, the beneficial effects of this application are as follows: This application uses a fixed sheave on a support base to fix both ends of a wire rope to the fixed sheave. The wire rope contacts the outer walls of a first pulley and a second pulley, respectively. The first pulley is rotatably connected to a second connecting block. A first fixed rod supports the second connecting block, and a second fixed rod supports a third connecting block. The second pulley rotates on a connecting frame via a third connecting shaft. When the fixed sheave rotates back and forth, the wire rope is subjected to tension through the second pulley. A spring limits the connection frame, simulating the elastic stress state of the wire rope in actual applications, thereby performing fatigue testing on the wire rope. The support base is equipped with multiple sets of testing components, allowing multiple wire ropes to be tested in the same experiment, reducing the overall experimental cycle and improving testing efficiency.

[0007] This application utilizes a motor assembly to drive a lower turntable to rotate via a rotating rod. A first connecting rod rotates with both the lower and upper eccentric columns. The lower eccentric column is fixed to the lower turntable, and the upper eccentric column is fixed to the upper turntable. Because the circumference of the lower turntable is smaller than that of the upper turntable, the upper turntable does not rotate completely when the lower turntable completes one revolution. This causes the upper turntable to drive a fixed pulley to swing back and forth via a second fixed rod. This eliminates the need for the motor assembly to repeatedly switch between forward and reverse directions, reducing start-stop shocks and current fluctuations, significantly extending the motor assembly's lifespan, avoiding operational jerks caused by frequent reversals, and ensuring the stability of the testing process. Attached Figure Description

[0008] Figure 1 This is a three-dimensional structural diagram of the test machine used in this application; Figure 2 This is a three-dimensional structural diagram of the installation location of the test component in this application; Figure 3 for Figure 2 Enlarged structural diagram of section A in the middle; Figure 4 This is a schematic diagram of the three-dimensional structure of the test component in this application; Figure 5 This is a three-dimensional structural diagram of the power assembly of this application; Figure 6 This is a three-dimensional structural diagram of the wire rope fixing seat of this application; Figure 7 This is a schematic diagram of the connection structure between the first connecting block and the second connecting rod in this application; Figure 8 for Figure 7 Enlarged structural diagram of section B in the middle.

[0009] Explanation of key symbols: 100. Support base; 101. Base; 102. Support column; 103. Crossbeam; 104. First connecting block; 105. First through groove; 106. Slide groove; 107. First connecting hole; 108. Second through groove; 109. Countersunk hole; 110. Second connecting rod; 111. Limiting head; 112. External thread; 113. Positioning surface; 200. Fixed reel; 201. Wire rope fixing seat; 202. First connecting shaft; 203. Fixing sleeve; 204. Socket head bolt; 205. Second connecting hole; 206. First bearing seat assembly; 300. Test assembly; 301. 302. Fixed rod; 303. Second connecting block; 304. First pulley; 305. Guide groove; 306. Support part; 307. Second fixed rod; 308. Connecting frame; 309. Third connecting block; 310. Second pulley; 311. Spring; 312. Second connecting shaft; 313. Third connecting shaft; 314. Storage groove; 315. Connecting plate; 400. Power assembly; 401. Motor assembly; 402. Rotating rod; 403. Second bearing seat assembly; 404. Lower turntable; 405. Lower eccentric column; 406. First connecting rod; 407. Upper eccentric column; 408. Upper turntable. Detailed Implementation

[0010] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Example

[0011] Please combine Figure 1-8This embodiment discloses a wire rope fatigue testing machine, comprising: a support base 100, a fixed reel 200, a testing assembly 300, and a power assembly 400. The support base 100 of this application includes: a base 101 and support columns 102; wherein, the support base 100 of this application is generally a cuboid structure with a certain thickness, and several support columns 102 are fixedly installed on the base 101 at their lower ends. Preferably, there are four support columns 102, and the four support columns 102 are fixedly connected at the four corners of the base 101, that is, one support column 102 is fixed at each corner of the base 101. The fixed reel 200 of this application has an overall cylindrical structure. Preferably, the fixed reel 200 of this application has a hollow structure. A plurality of wire rope fixing seats 201 are fixedly connected to the surface of the fixed reel 200. Preferably, the wire rope fixing seats 201 are welded to the surface of the fixed reel 200. Preferably, the number of wire rope fixing seats 201 in this application is 4-12. More preferably, the number of wire rope fixing seats 201 in this application is 8, which are arranged in two rows. A first connecting rod is fixedly connected to the central axis of the fixed reel 200. Shaft 202, by driving the first connecting shaft 202 to rotate, can drive the fixed pulley 200 to rotate. The two ends of the first connecting shaft 202 are rotatably connected to the crossbeam 103, and the two ends of the crossbeam 103 are fixedly connected to the support column 102. The crossbeam 103 in this application also serves to strengthen the connection between the support columns 102. In order to make the rotation of the first connecting shaft 202 smoother, both ends of the first connecting shaft 202 are mounted on the first bearing seat assembly 206, and the first bearing seat assembly 206 is fixed to the upper surface of the crossbeam 103. The test assembly 300 in this application includes: a first fixed rod 301, a second fixed rod 306, several connecting frames 307 and a second pulley 309. The first fixing rod 301 is fixedly connected to the upper part of the support column 102, and also serves to strengthen the connection between the support columns 102. The second fixing rod 306 is fixedly connected to the middle part of the support column 102. The upper end of the connecting frame 307 is rotatably connected to the second fixing rod 306, and the lower end of the connecting frame 307 is connected to one end of the spring 310. The other end of the spring 310 is fixedly connected to the first connecting block 104. The first connecting block 104 is connected to the base 101. Preferably, the first connecting block 104 and the base 101 can be fixedly connected and / or slidably connected. The second fixing rod 306 also serves to strengthen the connection between the support columns 102. The second pulley 309 is rotatably connected inside the connecting frame 307. Specifically, the second pulley 309 is rotatably connected inside the connecting frame 307 through the third connecting shaft 312. The second pulley 309 serves to guide the wire rope.The power assembly 400 of this application includes a motor assembly 401 and a connecting assembly. The motor assembly 401 is fixedly connected to the base 101, and a rotating rod 402 is fixedly connected to the output end of the motor assembly 401. The rotating rod 402 can extend the working range of the output end of the motor assembly 401. The lower end of the connecting assembly is connected to the rotating rod 402, and the upper end of the connecting assembly is connected to the first connecting shaft 202. That is, the connecting assembly enables the motor assembly 401 to drive the first connecting shaft 202 to swing back and forth, thereby driving the fixed reel 200 to swing back and forth.

[0012] In this application, a fixed pulley 200 is fixed to one end of a steel wire rope. The steel wire rope passes through a first fixed rod 301, a second pulley 309, another second pulley 309, and then back through the first fixed rod 301. The other end is then fixed to another steel wire rope fixing seat 201. The fixed pulley 200 is driven to swing back and forth by a power component 400, thereby enabling fatigue testing of the steel wire rope. This application provides multiple second pulleys 309, which allows for testing of multiple steel wire ropes and improves testing efficiency.

[0013] In a preferred embodiment of this application, a second connecting block 302 is fixedly connected to the first fixing rod 301. Preferably, the second connecting block 302 is provided with a screw hole, and a matching bolt is provided in the screw hole. The bolt is locked to the first fixing rod 301. When the bolt is loosened, the second connecting block 302 can move to a different position on the first fixing rod 301. A guide groove 304 is provided on one side of the second connecting block 302 for the wire rope to pass through. A support part 305 is provided at the upper end of one side (left side in the figure). A first pulley 303 is rotatably connected on the support part 305. The first pulley 303 guides the wire rope and reduces the friction of the wire rope. The width of the first pulley 303 is smaller than the width of the guide groove 304, so that the first pulley 303 will not rub against the second connecting block 302 when it rotates.

[0014] In a preferred embodiment of this application, a third connecting block 308 is installed between the second fixing rod 306 and the connecting frame 307. The upper end of the third connecting block 308 is fixedly connected to the second fixing rod 306, and a screw hole is provided on the third connecting block 308. A matching bolt is provided in the screw hole and is locked to the second fixing rod 306 by the bolt. When the bolt is loosened, the third connecting block 308 can move to a different position on the second fixing rod 306. The lower end of the third connecting block 308 is rotatably connected to the upper end of the connecting frame 307. Specifically, a storage groove 313 is provided at the lower end of the third connecting block 308, and a connecting plate 314 is fixedly connected to the upper end of the connecting frame 307. The connecting plate 314 is disposed in the storage groove 313 and is rotatably connected to the third connecting block 308 through the second connecting shaft 311.

[0015] In a preferred embodiment of this application, the connecting assembly includes a lower turntable 404, a first connecting rod 406, and an upper turntable 408. The lower turntable 404 is fixedly connected to the rotating rod 402 and is driven to rotate by the rotating rod 402. The lower end of the first connecting rod 406 is rotatably connected to the lower turntable 404 via a lower eccentric column 405. The upper turntable 408 is rotatably connected to the upper end of the first connecting rod 406 via an upper eccentric column 407.

[0016] In a preferred embodiment of this application, the base 101 is provided with a sliding groove 106, which cooperates with the first connecting block 104, that is, the first connecting block 104 can slide in the sliding groove 106. The sliding groove 106 is arranged longitudinally, and is arranged vertically in the figure. The base 101 is provided with a first through groove 105, which communicates with the sliding groove 106. The first through groove 105 is arranged horizontally, and is arranged horizontally in the figure.

[0017] In a preferred embodiment of this application, a second through groove 108 is provided on the first connecting block 104. The second through groove 108 can reduce the weight of the first connecting block 104. The second through groove 108 is arranged in a transverse direction. A first connecting hole 107 and a countersunk hole 109 are provided on the first connecting block 104 perpendicular to the second through groove 108. The first connecting hole 107 and the countersunk hole 109 are coaxially arranged. The first connecting hole 107 is used for fixed connection with the spring 310. Preferably, the spring 310 passes through the first connecting hole 107 and is then welded to the first connecting block 104. The countersunk hole 109 of this application is provided with a second connecting rod 110. One end of the second connecting rod 110 is provided with a limiting head 111, which is used to prevent the second connecting rod 110 from sliding out of the countersunk hole 109. The second connecting rod 110 is provided with an external thread 112, and the base 101 is provided with a threaded hole (not shown in the figure). That is, the base 101 below the slide groove 106 is provided with a threaded hole, which communicates with the through groove 105 and is threadedly connected to the second connecting rod 110. The second connecting rod 110 is also threadedly connected to the threaded base 101. Preferably, the second connecting rod 110 of this application is provided with a positioning surface 113. The positioning surface 113 can facilitate the rotation of the second connecting rod 110. When the second connecting rod 110 rotates, it can control the first connecting block 104 to move up and down in the slide groove 106, thereby controlling the pressure of the spring 310 and ultimately adjusting the tension of the wire rope. Therefore, this application can simultaneously perform fatigue tests on wire ropes of different thicknesses.

[0018] As a preferred embodiment of this application, the wire rope fixing base 201 includes a fixing sleeve 203, wherein one end of the fixing sleeve 203 is fixed to the fixing reel 200. Preferably, one end of the fixing sleeve 203 is welded to the surface of the fixing reel 200, and the other end of the fixing sleeve 203 is provided with a threaded hexagon socket head cap screw 204. The fixing sleeve 203 is provided with a second connecting hole 205, through which the wire rope can be inserted and locked by the hexagon socket head cap screw 204 to prevent the wire rope from slipping during testing.

[0019] The implementation principle of a wire rope fatigue testing machine in this application embodiment is as follows: one end of the wire rope is first fixed on the fixed pulley 200, and the wire rope contacts the outer walls of the first pulley 303 and the second pulley 309 respectively. The first pulley 303 rotates on the second connecting block 302, the first fixing rod 301 supports the second connecting block 302, the second fixing rod 306 supports the third connecting block 308, the second pulley 309 rotates on the third connecting shaft 312, and the connecting frame 307 fixes the third connecting shaft 312. When fixed... When the reel 200 rotates back and forth, the wire rope is under tension through the second pulley 309. The spring 310 limits the connection frame 307. The spring 310 simulates the elastic stress state of the wire rope in actual application, thereby performing fatigue testing on the wire rope. The support base 100 is equipped with multiple sets of test components 300, so that multiple wire ropes can be tested in the same experiment, reducing the overall experimental cycle and improving the testing efficiency. In addition, the tension of the spring 310 in this application can be adjusted, allowing simultaneous testing of wire ropes of different thicknesses, making the electric... The machine assembly 401 drives the lower turntable 404 to rotate via the rotating rod 402. Simultaneously, the rotating rod 402 rotates on the inner wall of the second bearing seat assembly 403, which supports the rotating rod 402. The first connecting rod 406 rotates with both the lower eccentric column 405 and the upper eccentric column 407. The lower eccentric column 405 is fixed to the lower turntable 404, and the upper eccentric column 407 is fixed to the upper turntable 408. Because the circumference of the lower turntable 404 is smaller than that of the upper turntable 408, the upper turntable 408 does not rotate when the lower turntable 404 completes one revolution. The circumferential rotation causes the upper turntable 408 to drive the fixed reel 200 to swing back and forth via the first connecting shaft 202. This eliminates the need for the motor assembly 401 to repeatedly switch between forward and reverse directions, reducing start-stop shocks and current fluctuations, significantly extending the service life of the motor assembly 401, avoiding operational jerks caused by frequent reversals, and ensuring the stability of the testing process. The first connecting shaft 202 rotates within the first bearing housing assembly 206, which simultaneously provides stable support for the first connecting shaft 202, ensuring the overall stable operation of the equipment.

[0020] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. A wire rope fatigue testing machine, characterized in that, include: Support base (100), the support base (100) includes: Base (101); Support columns (102), the lower ends of several of the support columns (102) are fixedly installed on the base (101); A fixed wire reel (200) is cylindrical in shape. Several wire rope fixing seats (201) are fixedly connected to the surface of the fixed wire reel (200). A first connecting shaft (202) is fixedly connected to the central axis of the fixed wire reel (200). The two ends of the first connecting shaft (202) are rotatably connected to the crossbeam (103). The two ends of the crossbeam (103) are fixedly connected to the support column (102). Test component (300), the test component (300) includes: The first fixing rod (301) is fixedly connected to the upper part of the support column (102); The second fixing rod (306) is fixedly connected to the middle part of the support column (102); A plurality of connecting frames (307) are provided, the upper end of which is rotatably connected to the second fixed rod (306), the lower end of which is connected to one end of a spring (310), the other end of which is fixedly connected to the first connecting block (104), and the first connecting block (104) is connected to the base (101). The second pulley (309) is rotatably connected within the connecting frame (307); Power assembly (400), the power assembly (400) comprising: A motor assembly (401) is fixedly connected to a base (101), and a rotating rod (402) is fixedly connected to the output end of the motor assembly (401). A connecting component, the lower end of which is connected to the rotating rod (402), and the upper end of which is connected to the first connecting shaft (202).

2. The wire rope fatigue testing machine as described in claim 1, characterized in that: A second connecting block (302) is fixedly connected to the first fixed rod (301). A guide groove (304) is provided on one side of the second connecting block (302). A support part (305) is provided on the upper end of one side of the second connecting block (302). A first pulley (303) is provided on the support part (305) and is rotatably connected. The width of the first pulley (303) is smaller than the width of the guide groove (304).

3. The wire rope fatigue testing machine as described in claim 1, characterized in that: A third connecting block (308) is installed between the second fixing rod (306) and the connecting frame (307). The upper end of the third connecting block (308) is fixedly connected to the second fixing rod (306), and the lower end of the third connecting block (308) is rotatably connected to the upper end of the connecting frame (307).

4. The wire rope fatigue testing machine as described in claim 3, characterized in that: The lower end of the third connecting block (308) is provided with a storage groove (313), and the upper end of the connecting frame (307) is fixedly connected with a connecting plate (314). The connecting plate (314) is set in the storage groove (313) and is rotatably connected to the third connecting block (308) through the second connecting shaft (311).

5. A wire rope fatigue testing machine as described in claim 1, characterized in that: The connection component includes: The lower turntable (404) is fixedly connected to the rotating rod (402) and is driven to rotate by the rotating rod (402); The first connecting rod (406) has its lower end rotatably connected to the lower turntable (404) via a lower eccentric column (405); The upper turntable (408) is rotatably connected to the upper end of the first connecting rod (406) via an upper eccentric column (407).

6. The wire rope fatigue testing machine as described in claim 1, characterized in that: The base (101) is provided with a sliding groove (106), which cooperates with the first connecting block (104). The sliding groove (106) is arranged longitudinally. The base (101) is provided with a first through groove (105), which communicates with the sliding groove (106).

7. A wire rope fatigue testing machine as described in claim 6, characterized in that: The first connecting block (104) is provided with a second through groove (108), which is arranged in a horizontal direction. The first connecting block (104) perpendicular to the second through groove (108) is provided with a first connecting hole (107) and a countersunk hole (109), which are coaxially arranged.

8. A wire rope fatigue testing machine as described in claim 7, characterized in that: A second connecting rod (110) is provided in the countersunk hole (109). A limit head (111) is provided at one end of the second connecting rod (110). The second connecting rod (110) is provided with an external thread (112). A screw hole is provided on the base (101). The screw hole is located below the slide groove (106). The screw hole is connected to the through groove (105). The screw hole is threadedly connected to the second connecting rod (110).

9. A wire rope fatigue testing machine as described in claim 8, characterized in that: The second connecting rod (110) is provided with a positioning surface (113), and the second connecting rod (110) is driven to rotate through the positioning surface (113).

10. A wire rope fatigue testing machine as described in claim 1, characterized in that: The wire rope fixing base (201) includes: A fixing sleeve (203) is provided. One end of the fixing sleeve (203) is fixed on the fixing reel (200), and the other end of the fixing sleeve (203) is provided with a threaded internal hex bolt (204). A second connecting hole (205) is provided on the fixing sleeve (203).

Images