Steel cable tension detection equipment for lifting equipment

Abstract

The invention relates to the technical field of steel cable tension detection, in particular to steel cable tension detection equipment for lifting equipment. The device comprises a device body, an unwinding roller and a winding roller are rotatably arranged in a roller supporting structure, a tension providing mechanism is hung on the surface of a steel cable between a first vertical rod group and a second vertical rod group, the tension providing mechanism can slide on the surface of the steel cable along with winding of the steel cable, and a lifting tension test is carried out on the part, passing through the position, of the steel cable. Side supporting assemblies are installed in the first vertical rod set and the second vertical rod set. When a steel cable is tested, the steel cable needs to sequentially penetrate through the two sliding holes, the sliding hole close to the unwinding roller can detect surface flaws of the steel cable in advance, the sliding hole close to the winding roller can judge the state of the steel cable subjected to a tension test, and a driving motor sensing device of the driving set drives the winding roller to rotate when the steel cable is clamped in the sliding hole close to the winding roller due to unqualified tension. And the driving motor can be automatically stopped, so that workers can conveniently and timely perceive problems and rapidly check the problems.

Description

Technical Field

[0001] The present invention relates to the technical field of steel cable tension detection, in particular to a steel cable tension detection device for lifting equipment. Background Art

[0002] In industrial production and engineering construction, steel cables are widely used as an important load-bearing component. Steel cables are generally made of multiple strands of steel wire and have the advantages of high strength, good flexibility, and large load-bearing capacity. They come in various specifications, and the tensile forces that steel cables of different thicknesses can withstand vary. For example, a steel cable with a diameter of 10 mm can withstand a tensile force between 50 kN and 100 kN. Before a steel cable leaves the factory, load-bearing tensile testing is a crucial quality control link. Manufacturers will set corresponding standard tensile values for testing based on the specifications and models of the steel cable. If the steel cable is damaged during the test with the standard force, it will be judged as an unqualified product; and the steel cable that can withstand this force will be deemed to meet the quality standards and can be shipped out of the factory and put into circulation on the market. For example, China Patent Publication No.: CN118670870A is a steel cable testing device for construction engineering hoisting equipment. In this device, during the test, the servo motor starts to drive the connecting rod to operate, thereby driving the winding roller to rotate. At the same time, the unwinding roller rotates in the opposite direction under the action of the transmission component. Since the winding roller and the unwinding roller rotate in opposite directions, the steel cable body is gradually straightened between the two. As the equipment runs, the part of the steel cable body in the fixed sleeve will move downward due to its own gravity and other factors, thereby generating tension. At this time, the tension sensor located above starts to work to detect the tension and strength of the steel cable in this area. However, if there is an error in the speed control of the winding roller and the unwinding roller when they are rotating, it is easy to cause uneven force on the steel cable during the straightening process. For example, if the winding roller rotates slightly faster, the steel cable will be subjected to excessive tensile force locally, while if the unwinding roller rotates too fast, the steel cable may be loosened, affecting the accuracy of the test results. If a steel cable is damaged during inspection, cameras can be used to inspect its outer wall. However, since cables of the same specification are very similar in appearance, as the inspection process progresses, the cable continues to rotate, and the mark previously made on the damaged area will quickly be mixed in with the continuously rotating cable. This makes it very difficult to accurately identify the original location of the mark, which greatly hinders the subsequent detailed analysis of the damaged area and quality traceability. In view of this, there is an urgent need for a steel cable tension detection device for lifting equipment to solve the above problems. Summary of the Invention

[0003] The present invention provides a steel cable tension detection device for lifting equipment. By setting the steel cable tension detection area, the middle part of the steel cable can be fully and orderly subjected to tension detection. The hanging ring position is stable, the interference of steel cable shaking is reduced, and the detection and judgment are efficient. It can provide the needs of accurately evaluating the quality of steel cables, timely discovering problems and quickly solving them in the quality control link of steel cable production, thereby solving the problems raised in the above-mentioned background technology, namely: Errors in the speed control of the winding and unwinding rollers will cause uneven force on the steel cable during the straightening process, affecting the test results. In addition, the damaged marks during the steel cable inspection are difficult to accurately distinguish their initial positions during the cyclic rotation due to the continuous rotation of the steel cable and their similar appearance, which greatly hinders subsequent damage analysis and quality traceability.

[0004] To achieve the above-mentioned purpose, the device includes a device body, the device body includes a workbench, a support roller structure is installed on the top of the workbench, the support roller structure is internally provided with a pay-out roller and a take-up roller for winding the steel cable, the support roller structure includes a first vertical pole group and a second vertical pole group, and a tension providing mechanism is hung on the surface of the steel cable located between the first vertical pole group and the second vertical pole group; As the steel cable is reeled in, the tension providing mechanism can slide on the surface of the steel cable to carry out a lifting tension test on the part where the steel cable passes through the position; Side support assemblies are installed inside the first and second vertical pole groups. The side support assemblies include extension plates. When the steel cable is wound on the surfaces of the pay-out roller and the take-up roller, the middle part of the steel cable passes through the extension plate, which can fix the detection area of the steel cable. In addition, during the winding process of the steel cable, the extension plate is used to detect external damage to the steel cable.

[0005] In the above technical solution, the support roller structure has a pay-out roller and a take-up roller for winding the steel cable, and the support roller structure is composed of a first vertical pole group and a second vertical pole group, in which the steel cable is hung with a tension providing mechanism, so that as the steel cable is wound, the tension providing mechanism can slide on the surface of the steel cable to perform a lifting tension test on the passing part. When the steel cable is wound on the surface of the pay-out roller and the take-up roller, it passes through the extension plate of the side support assembly inside the first vertical pole group and the second vertical pole group, so the extension plate can not only fix the steel cable detection area, but also perform external damage detection on the steel cable during the winding process.

[0006] On this basis, the tension-providing mechanism includes a hanging ring that can be sleeved onto the surface of the steel cable. The hanging ring has an arc-shaped cross-section, and a load-bearing member is suspended at the bottom of the hanging ring. A top limiter is installed between the first and second vertical pole groups to limit the sleeve position of the hanging ring. The top limiter includes a suspension rod, the four corners of which are respectively connected to the surfaces of the first, second, third, and fourth struts. Two limit baffles are fixedly installed at the bottom of the middle end of the suspension rod, forming a limit cavity between the two limit baffles. The hanging ring of the tension-providing mechanism can be sleeved onto the steel cable, and the bottom load-bearing member can apply tension to test the steel cable. The suspension rod of the top limiter is connected to the four struts, and the two limit baffles at the bottom form a limit cavity, which can ensure that the hanging ring is stably in the predetermined detection position when the steel cable is reeled, ensuring accurate and stable tension detection and facilitating the assessment of steel cable quality.

[0007] Furthermore, two extension plates are provided, which are respectively clamped and installed inside the first vertical pole group and the second vertical pole group. A sliding hole capable of passing the steel cable is opened in the middle of the extension plate, and the inner diameter of the sliding hole is in a state of contact with the surface of the steel cable to be tested; This technical solution, by setting sliding holes near the pay-out roller and the take-up roller to perform two tests during the cable winding test process, can determine the appearance of the cable before the formal tension test, and determine whether the cable is deformed due to force after the tension test, thereby accurately determining whether the cable tension test is qualified. At the same time, the sensor device of the drive motor can sense resistance and automatically shut down when the cable is stuck and unqualified, so that the staff can detect and troubleshoot the problem in time, effectively improving the efficiency and accuracy of the inspection work and ensuring production quality.

[0008] Compared with the prior art, the present invention has the following beneficial effects: By using the area between the pay-out roller and the take-up roller as the cable tension test area, the pay-out roller and the take-up roller rotate under the drive group, causing the cable to slowly wind up, and the tension test can be carried out on each part of the middle of the cable in turn, thereby improving the detection coverage rate and achieving a comprehensive assessment of the quality of the middle part of the cable. At the same time, the limit cavity formed by the two limit baffles at the bottom of the suspension rod can fix the position of the hanging ring, preventing the hanging ring from shifting due to cable winding, and ensuring the stability and accuracy of the detection process; In addition, the sliding holes on the extension plate can limit the positions of both ends of the steel cable, reduce the interference of the left and right shaking of the steel cable when winding, and further improve the detection accuracy. The steel cable needs to pass through the two sliding holes in sequence during testing. The sliding hole close to the release roller can pre-detect surface defects of the steel cable, and the sliding hole close to the winding roller can judge the state of the steel cable after the tensile test, so as to efficiently determine whether the steel cable is qualified. In addition, the drive motor sensor device of the drive group can automatically shut down the drive motor when the steel cable is stuck in the sliding hole near the winding roller due to unqualified tension, which is convenient for staff to detect problems in time and quickly check, greatly improving the efficiency and accuracy of the detection work and ensuring production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the steel cable detection in Example 1 of the present invention; Figure 3 This is a schematic diagram of the structure of the drive group according to embodiment 1 of the present invention; Figure 4 Schematic diagram of the steel cable tension detection structure according to embodiment 1 of the present invention; Figure 5 Schematic diagram of the cross-section structure of the roller in Example 1 of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the structure at A; Figure 7 This is a schematic diagram of the hanging ring structure of Example 1 of the present invention; Figure 8 This is a side view of the steel cable detection according to embodiment 1 of the present invention; Figure 9 This is a schematic diagram of the cross-sectional structure of the extension plate of Example 1 of the present invention; Figure 10 For the present invention Figure 9 Schematic diagram of the structure at B; Figure 11 This is a schematic diagram of the disassembly structure of the unwinding roller and the rewinding roller of the present invention; Figure 12 This is a front view of embodiment 2 of the present invention.

[0010] The meaning of each number in the figure is: 1. Equipment body; 11. Workbench; 12. Roller support structure; 13. Roller release; 14. Roller retraction; 15. Positioning rod; 16. Pad tube; 21. First pole group; 22. Second pole group; 23. Drive group; 211, first support rod; 212, second support rod; 221, third support rod; 222, fourth support rod; 231, first belt pulley; 232, second belt pulley; 233, bracket; 3. Tension providing mechanism; 31. Load-bearing member; 32. Top limit member; 33. Hanging ring; 321, suspension rod; 322, limit baffle; 323, limit cavity; 4. Side support assembly; 41. Extension plate; 42. Sliding hole; 43. Side bag; 44. Storage cavity; 5. Lubrication sac; 51. Exit hole; 6. Side fillet. DETAILED DESCRIPTION

[0011] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0012] Example 1: Currently, the speed control error of the winding roller and the unwinding roller will cause uneven force on the steel cable during the straightening process, affecting the test results. In addition, the damaged part mark in the steel cable detection is difficult to accurately distinguish its initial position during the cyclic rotation due to the continuous rotation of the steel cable and its similar appearance. The present invention provides a steel cable tension test device for lifting equipment, see Figure 1-Figure 2 As shown, the device body 1 includes a workbench 11, a support roller structure 12 is installed on the top of the workbench 11, and a pay-out roller 13 and a take-up roller 14 are rotatably provided inside the support roller structure 12 for winding the steel cable. The support roller structure 12 includes a first vertical pole group 21 and a second vertical pole group 22, and a tension providing mechanism 3 is hung on the surface of the steel cable between the first vertical pole group 21 and the second vertical pole group 22; As the steel cable is wound, the tension providing mechanism 3 can slide on the surface of the steel cable to carry out a lifting tension test on the portion of the steel cable passing through the position; Side support assemblies 4 are installed inside the first vertical pole group 21 and the second vertical pole group 22. The side support assemblies 4 include extension plates 41. When the steel cable is wound on the surface of the pay-out roller 13 and the take-up roller 14, the middle part thereof passes through the extension plate 41, which can fix the detection area of the steel cable. In addition, during the winding process of the steel cable, the extension plate 41 is used to detect external damage to the steel cable.

[0013] When the steel cable needs to be inspected, it needs to be reeled and placed. The specific structure of the first vertical pole group 21 and the second vertical pole group 22 is disclosed below. The first vertical pole group 21 includes a first strut 211 and a second strut 212, and the second vertical pole group 22 includes a third strut 221 and a fourth strut 222. The release roller 13 is rotatably arranged between the first strut 211 and the second strut 212, and the take-up roller 14 is rotated between the third strut 221 and the fourth strut 222. The middle parts of the second strut 212 and the fourth strut 222 are both plugged with positioning rods 15, and the other ends of the two positioning rods 15 are movably installed inside the release roller 13 and the take-up roller 14 respectively. The two positioning rods 15 are close to the end surface of the release roller 13 and the take-up roller 14 with a pad tube 16.

[0014] from Figure 2 and Figure 3It can be seen that the top of the workbench 11 is fixedly mounted with a first support rod 211, a second support rod 212, a third support rod 221, and a fourth support rod 222. The unwinding roller 13 is used to reel in the untested steel cable, while the rewinding roller 14 is used to reel in the tested steel cable. Before carrying out the inspection work, you need to install the roller 13 first, refer to Figure 11 The specific steps of installing the release roller 13 are as follows: first, wrap the steel cable around the surface of the release roller 13, then remove the positioning rod 15 from the second support rod 212. Since the pad tube 16 is sleeved on the surface of the positioning rod 15, when the positioning rod 15 is removed, the pad tube 16 will also detach from the side of the second support rod 212. Then, one end of the release roller 13 is attached to the surface of the first support rod 211, and then the pad tube 16 is attached to the side of the release roller 13 away from the first support rod 211. Finally, the positioning rod 15 is inserted back into the interior of the second support rod 212, and it is ensured that the end of the positioning rod 15 is inserted into the interior of the release roller 13. At this point, the release roller 13 can flexibly rotate between the first support rod 211 and the second support rod 212, completing the installation process and providing stable support for the subsequent cable release during the steel cable inspection. When the inspection is completed, the steel cable will be transferred and wound onto the surface of the take-up roller 14, also combined with Figure 11 , the take-up roller 14 is disassembled using a method similar to the installation of the put-out roller 13. Through such an operation process, the installation and disassembly of the put-out roller 13 and the take-up roller 14 can be completed conveniently and efficiently, greatly improving the operational convenience and work efficiency of the equipment.

[0015] During the steel cable detection process, the release roller 13 and the take-up roller 14 need to be driven by the drive group 23. Secondly, the specific structure of the drive group 23 is disclosed. The drive group 23 is installed at the ends of the first vertical pole group 21 and the second vertical pole group 22. The drive group 23 includes a first belt pulley 231 and a second belt pulley 232. The first belt pulley 231 is installed on the outer wall of the third support rod 221, and the second belt pulley 232 is installed on the outer wall of the first support rod 211. A bracket 233 is fixedly installed on the surface of the side of the third support rod 221 away from the take-up roller 14. The first belt pulley 231 and the second belt pulley 232 are connected by a belt body.

[0016] Depend on Figure 3It can be seen that the second belt pulley 232 and the first belt pulley 231 are rotatably provided on the end surface of the first support rod 211 and the third support rod 221 away from the unwinding roller 13 and the take-up roller 14, respectively. The rotating shafts of the second belt pulley 232 and the first belt pulley 231 extend into the surfaces of the first support rod 211 and the third support rod 221. When the unwinding roller 13 and the take-up roller 14 are installed, the rotating shafts of the second belt pulley 232 and the first belt pulley 231 will be clamped between the unwinding roller 13 and the take-up roller 14. In this way, when the first belt pulley 231 and the second belt pulley 232 rotate, the unwinding roller 13 and the take-up roller 14 will also rotate accordingly, thereby realizing the winding operation of the steel cable; A belt is provided between the first belt pulley 231 and the second belt pulley 232 for connecting the two. A bracket 233 is fixedly installed on the outer wall of the third support rod 221. A driving motor is installed on the bracket 233. The output shaft of the driving motor is connected to the first belt pulley 231. When the driving motor is started, its output shaft drives the first belt pulley 231 to rotate. Since the belt has friction, when the first belt pulley 231 rotates, the belt will be driven to rotate under the action of friction. Because the belt is in contact and fits with the second belt pulley 232 at the same time, based on the friction between the belt and the belt pulley, the operation of the belt will drive the second belt pulley 232 to rotate synchronously. In this way, the first belt pulley 231 and the second belt pulley 232 achieve synchronous operation, so that the pay-out roller 13 and the take-up roller 14 connected thereto can rotate in the same direction, and the steel cable can be wound smoothly.

[0017] Before the steel cable leaves the factory, load-bearing tension testing is a key quality control link. The manufacturer will set standard tension values according to the specifications and models of the steel cable, and realize gravity provision of the steel cable through the tension providing mechanism 3. If the steel cable is damaged during the inspection, it will be judged as unqualified; if it can withstand the standard tension, it will be deemed to meet the quality standards. The specific structure of the tension providing mechanism 3 is disclosed below. The tension providing mechanism 3 includes a hanging ring 33 that can be sleeved on the surface of the steel cable. The cross-section of the hanging ring 33 is arc-shaped, and a load-bearing member 31 is suspended at the bottom of the hanging ring 33. A top limit member 32 for limiting the sleeve position of the hanging ring 33 is installed between the first vertical pole group 21 and the second vertical pole group 22.

[0018] The top limiting member 32 includes a suspension rod 321, the four corners of which are respectively connected to the surfaces of the first support rod 211, the second support rod 212, the third support rod 221 and the fourth support rod 222. Two limiting baffles 322 are fixedly installed at the bottom of the middle end of the suspension rod 321, and a limiting cavity 323 is formed between the two limiting baffles 322.

[0019] Reference Figure 2 and Figure 4The area between the pay-out roller 13 and the take-up roller 14 is designated as the cable tension detection area. A hanging ring 33 is hung on the surface of the cable in this area. The bottom of the hanging ring 33 is connected to a load-bearing member 31. It is worth mentioning that the weight of the load-bearing member 31 can be flexibly adjusted according to the different specifications of the cable, which can match the detection force required by different cables, ensuring the pertinence and effectiveness of the detection. During the testing process, the pay-out roller 13 and the take-up roller 14 start to rotate under the drive of the drive group 23, causing the steel cable to slowly wind up. As the steel cable continues to wind up, each part of the middle of the cable body can be subjected to tension testing in turn, thereby achieving a complete test of the middle part of the steel cable, greatly improving the coverage of the test. At the same time, a suspension rod 321 is installed between the first vertical pole group 21 and the second vertical pole group 22. Figure 6 As shown, two limiting baffles 322 are fixed to the bottom of the middle end of the suspension rod 321. A limiting cavity 323 is formed between the two limiting baffles 322, and the hanging ring 33 is exactly located inside the limiting cavity 323. During the winding of the steel cable, due to the obstruction of the limiting cavity 323, the hanging ring 33 will not be displaced by the moving force generated by the winding of the steel cable, and will always remain in a fixed detection position, ensuring the stability and accuracy of the detection process. In addition, the bottom of the load-bearing member 31 is in a hanging state with the top of the workbench 11, but the tops of the two are not in a fitting state, which further improves the comprehensiveness of the inspection, minimizes the blind spots of the inspection, and provides a solid and reliable guarantee for the quality of the steel cable.

[0020] In order to further stabilize the steel cable in the steel cable tension detection area and reduce the interference caused by the left and right shaking of the steel cable on the detection accuracy, two extension plates 41 are provided, which are respectively clamped and installed inside the first vertical pole group 21 and the second vertical pole group 22. A sliding hole 42 for passing the steel cable is opened in the middle of the extension plate 41, and the inner diameter of the sliding hole 42 is in contact with the surface of the steel cable to be tested.

[0021] The improvement lies in: combining Figure 5 、 Figure 8 and Figure 9 As shown, the interiors of the first and second vertical pole groups 21 and 22 are both mounted with extension plates 41 by means of a snap-fit connection. Sliding holes 42 are provided on the extension plates 41. Before actual testing, sliding holes 42 with matching inner diameters can be selected based on the size of the steel cable to be tested (it is necessary to ensure that the sliding holes 42 on the two extension plates 41 are of the same size). Since the two extension plates 41 are located at the outer ends of the steel cable tension testing area, they can effectively limit the positions of the two ends of the steel cable to be tested. During the steel cable reeling process, the interference caused by the left and right shaking of the steel cable on the test can be reduced, thereby providing stable conditions for accurate testing. During the cable winding test, the cable needs to pass through the two sliding holes 42 in sequence. The sliding hole 42 near the pay-out roller 13 can play a detection role. If the cable can accurately pass through the sliding hole 42 at this position, it means that before the formal tension test, there is no obvious physical defect such as deformation on the cable surface, and its appearance is in good condition. After completing the tension test, the cable needs to pass through the sliding hole 42 near the take-up roller 14 again. If the cable can still pass through accurately, it means that after the cable is subjected to the gravity test of the load-bearing member 31, there is no physical change on the surface, that is, the cable tension test is qualified. On the contrary, if the cable cannot pass through the sliding hole 42 near the take-up roller 14, it means that the cable has been deformed after being subjected to tension, and the cable test is unqualified. It is worth mentioning that the drive motor in the drive group 23 is equipped with a sensor device (using existing technology, which will not be elaborated here). When the tension of the steel cable is unqualified, causing the steel cable to be stuck in the sliding hole 42 near the take-up roller 14, the rotation of the take-up roller 14 will be blocked. At this time, the drive motor can sense this resistance and automatically stop running. In this way, the staff can promptly detect the unqualified steel cable and then quickly troubleshoot the problem, which greatly improves the efficiency and accuracy of the detection work and ensures production quality.

[0022] In order to reduce the possibility that the hanging ring 33 is obstructed when sliding on the surface of the steel cable due to the rough surface of the steel cable, an installation groove is provided at the top of the inner cavity of the hanging ring 33, and a lubricating bag 5 is clamped and installed inside the installation groove. A lubricating cavity is provided inside the lubricating bag 5, and a plurality of outlet holes 51 are provided at the bottom of the inner cavity of the lubricating cavity. During the process of winding and testing the tension of the steel cable, the lubricating oil stored in the lubricating cavity can slide out from the outlet holes 51 and drip onto the surface of the steel cable.

[0023] Depend on Figure 7 It can be seen that an installation groove is provided inside the hanging ring 33, and a lubricating bag 5 is provided in the groove, and a lubricating cavity is provided inside the lubricating bag 5, and the cavity is filled with lubricating oil. When the hanging ring 33 is hung on the surface of the steel cable, due to the weight of the load-bearing member 31 itself, the hanging ring 33 will be driven to squeeze the steel cable. Under this squeezing action, the lubricating oil in the lubricating cavity will pass through a number of outlet holes 51 pre-opened on the surface of the lubricating bag 5 and drip evenly onto the surface of the steel cable. The lubricating oil spreads between the steel cable and the lubricating bag 5 to form a lubricating film, which greatly reduces the friction between the two. In this way, even if the surface of the steel cable is relatively rough, the hanging ring 33 can slide smoothly on the steel cable, effectively reducing the situation where the sliding of the hanging ring 33 is hindered due to the rough surface of the steel cable, and ensuring the continuity and stability of the detection process. Among them, if the amount of lubricating oil in the lubricating cavity is small, the lubricating bag 5 can be replaced.

[0024] Since the inner cavity of the sliding hole 42 fits with the surface of the steel cable, the lubricating oil is easily squeezed and dripped when the steel cable passes through the sliding hole 42 near the side of the take-up roller 14. Therefore, a side bag 43 is installed on the surface of the sliding hole 42 near the second vertical pole group 22, and a storage chamber 44 is formed inside the side bag 43.

[0025] The improvement is that a side bag 43 is provided on the surface of the sliding hole 42 near the second vertical pole group 22. Figure 9 and Figure 10 As shown, a storage chamber 44 is provided inside the side bag 43. When the steel cable and the sliding hole 42 squeeze each other, causing the lubricating oil to drip, the storage chamber 44 can accurately collect the dripping lubricating oil. In this way, the environment around the equipment can be kept clean and tidy, and the normal working order will not be affected by oil stains. Moreover, the collected lubricating oil can be processed centrally to avoid waste, further optimizing the equipment operating environment and providing a stable and clean foundation for the smooth implementation of steel cable detection work.

[0026] Both sides of the hanging ring 33 are provided with side fillets 6 for reducing the sliding friction of the steel cable.

[0027] When the wire rope detection equipment is running, the wire rope needs to slide on the hanging ring 33. The hanging ring 33 with a traditional right-angle edge will produce friction with the wire rope during the sliding process, which may easily cause the hanging ring 33 to get stuck when sliding. Figure 7 As shown, the side fillet 6 effectively reduces the friction resistance between the hanging ring 33 and the steel cable by rounding the edge of the hanging ring 33, so that the hanging ring 33 slides more smoothly on the steel cable and reduces the probability of the occurrence of the jamming phenomenon. This not only ensures the smooth sliding of the steel cable at the hanging ring 33, but also reduces the additional wear on the surface of the steel cable caused by jamming.

[0028] The above content tests the steel cable wound between the take-up roller 14 and the pay-out roller 13, which means that the middle part of the steel cable is tested. If the end of the steel cable is to be tested, it can be achieved with the help of a tension tester in the prior art at different stages of the testing process. Specifically, before the test starts, when the steel cable has not yet started the winding operation and is still on the surface of the pay-out roller 13, one end of the steel cable is connected to the tension tester for an end tension test; after the test is completed, the steel cable has been wound to the surface of the take-up roller 14. At this time, the other end of the steel cable is connected to the tension tester, and an independent tension test is performed on this end to comprehensively evaluate the quality of both ends of the steel cable.

[0029] Working principle: Before carrying out the inspection work, it is necessary to install the release roller 13 first. First, wrap the steel cable around the surface of the release roller 13. Then, remove the positioning rod 15 from the second support rod 212. Since the pad tube 16 is sleeved on the surface of the positioning rod 15, when the positioning rod 15 is removed, the pad tube 16 will also detach from the side of the second support rod 212. Then, stick one end of the release roller 13 to the surface of the first support rod 211, and then stick the pad tube 16 to the side of the release roller 13 away from the first support rod 211. Finally, plug the positioning rod 15 back into the inside of the second support rod 212, and make sure that the end of the positioning rod 15 is inserted into the inside of the release roller 13. At this point, the release roller 13 can flexibly rotate between the first support rod 211 and the second support rod 212, completing the installation process and providing stable support for the cable release during subsequent steel cable inspection; During the testing process, the area between the pay-out roller 13 and the take-up roller 14 is designated as the cable tension testing area. A hanging ring 33 is hung on the cable surface within this area, and a load-bearing member 31 is connected to the bottom of the hanging ring 33. During the testing process, the pay-out roller 13 and the take-up roller 14 start to rotate under the drive group 23, causing the cable to slowly wind up. As the cable continues to wind up, each part of the middle of the cable body can be subjected to tension testing in turn, thereby achieving a complete test of the middle part of the cable, greatly improving the coverage of the test. At the same time, a suspension rod 321 is installed between the first vertical pole group 21 and the second vertical pole group 22. Two limit baffles 322 are fixed to the bottom of the middle end of the suspension rod 321. A limit cavity 323 is formed between the two limit baffles 322, and the hanging ring 33 is just located inside the limit cavity 323. During the winding of the steel cable, due to the obstruction of the limit cavity 323, the hanging ring 33 will not be displaced by the moving force generated by the winding of the steel cable, and will always remain in a fixed detection position, thereby ensuring the stability and accuracy of the detection process. The extension plate 41 is installed in the first vertical pole group 21 and the second vertical pole group 22 in a clamping manner. There is a sliding hole 42 on the plate. Before testing, the sliding hole 42 with an adapted inner diameter and the same size of the two holes can be selected according to the size of the steel cable. Because the two extension plates 41 are located at the outer ends of the steel cable tension detection area, they can effectively limit the positions of the two ends of the steel cable to be tested. The interference of the left and right shaking of the steel cable when winding is reduced to the detection, and stable conditions are created for accurate detection. When the steel cable is wound, it needs to pass through the two sliding holes 42 in sequence. The sliding hole 42 near the release roller 13 can be pre-tested. If the steel cable can pass through accurately, it indicates that there is no deformation or other obvious defects on the surface of the steel cable before the detection. After completing the tension test, the steel cable needs to pass through the sliding hole 42 near the take-up roller 14. If it can pass through, it means that the surface of the steel cable has no change after the gravity test of the load-bearing member 31, and the test is qualified; otherwise, the steel cable is deformed due to force and the test is unqualified. The drive motor of the drive group 23 is provided with a sensor device. When the steel cable is stuck in the sliding hole 42 near the take-up roller 14 due to unqualified tension, the rotation of the take-up roller 14 is blocked, and the drive motor automatically stops when it senses resistance, which makes it convenient for staff to promptly detect unqualified steel cables, quickly troubleshoot problems, greatly improve detection efficiency and accuracy, and ensure production quality.

[0030] When the inspection work is completed, the steel cable will be transferred and wound onto the surface of the take-up roller 14, and the take-up roller 14 will be disassembled using a method similar to the installation of the pay-out roller 13.

[0031] It should be noted that: for the force setting of steel cable testing, due to differences in its material properties and manufacturing processes, the actual bearing capacity fluctuates within a certain range. Taking the 10 mm diameter steel cable mentioned in the background technology as an example, the upper limit of the tensile force it can withstand is about 100 kN. When testing steel cables of this specification, the standard tensile value is not simply set to 100 kN. Instead, after fully considering safety redundancy and uncertainties in actual use, a reasonable value lower than its ultimate bearing capacity is selected as the standard tensile value, such as 70 kN. During the testing process, if the steel cable is continuously subjected to the standard tensile value and there are damages such as wire breakage, structural deformation, looseness between strands, etc. that affect its bearing performance, it will be immediately judged as an unqualified product and prevented from entering the market. On the contrary, if the steel cable can stably withstand the standard tensile force, various performance indicators remain normal, and there is no abnormal change in the internal structure, it can be determined that its quality meets the qualified standards and is allowed to enter the subsequent market circulation links and be put into actual engineering applications.

[0032] Example 2: Figure 12 As shown, unlike the first embodiment, the load-bearing member 31 can be replaced with a tensile testing machine, a device specifically used to test the tensile properties of materials. One end of the steel cable is fixed to the fixed fixture of the tensile testing machine, and the other end is connected to the mobile fixture of the testing machine. The testing machine is started and applies tension to the steel cable at a set loading speed until the cable reaches the specified tension value or fails. During the test, the testing machine's control system displays and records the tension data in real time.

[0033] 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 preferred examples of the present invention and are not intended to limit 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. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire rope tension testing device for lifting equipment, comprising a device body (1), the device body (1) comprising a workbench (11), a support roller structure (12) being installed on the top of the workbench (11), a pay-out roller (13) and a take-up roller (14) being provided inside the support roller structure (12) for reeling in the wire rope, and characterized in that: The supporting roller structure (12) comprises a first vertical pole group (21) and a second vertical pole group (22), and a tension providing mechanism (3) is hung on the surface of the steel cable located between the first vertical pole group (21) and the second vertical pole group (22); As the steel cable is wound, the tension providing mechanism (3) can slide on the surface of the steel cable to carry out a lifting tension test on the portion of the steel cable passing through the position; A side support assembly (4) is installed inside the first vertical pole group (21) and the second vertical pole group (22). The side support assembly (4) includes an extension plate (41). When the steel cable is wound on the surface of the pay-out roller (13) and the take-up roller (14), the middle part of the steel cable passes through the extension plate (41), which can fix the detection area of the steel cable. In addition, during the winding process of the steel cable, the extension plate (41) is used to detect external damage to the steel cable.

2. The steel cable tension detection device for lifting equipment according to claim 1, characterized in that: The first vertical pole group (21) includes a first support pole (211) and a second support pole (212), the second vertical pole group (22) includes a third support pole (221) and a fourth support pole (222), the unwinding roller (13) is rotatably arranged between the first support pole (211) and the second support pole (212), and the rewinding roller (14) is rotatably arranged between the third support pole (221) and the fourth support pole (222).

3. The wire rope tension detection device for lifting equipment according to claim 2, characterized in that: Positioning rods (15) are installed in the middle of the second support rod (212) and the fourth support rod (222), and the other ends of the two positioning rods (15) are movably installed inside the release roller (13) and the retracting roller (14), respectively. The surfaces of one end of the two positioning rods (15) close to the release roller (13) and the retracting roller (14) are sleeved with pad tubes (16).

4. The wire rope tension detection device for lifting equipment according to claim 3, characterized in that: A drive group (23) is installed at the ends of the first vertical pole group (21) and the second vertical pole group (22), and the drive group (23) includes a first belt pulley (231) and a second belt pulley (232), the first belt pulley (231) is installed on the outer wall of the third support rod (221), and the second belt pulley (232) is installed on the outer wall of the first support rod (211), and a bracket (233) is fixedly installed on the surface of the side of the third support rod (221) away from the winding roller (14), and the first belt pulley (231) and the second belt pulley (232) are connected by a belt body.

5. The steel cable tension detection device for lifting equipment according to claim 3, characterized in that: The tension providing mechanism (3) includes a hanging ring (33) that can be sleeved on the surface of the steel cable, the cross-section of the hanging ring (33) is arc-shaped, a load-bearing member (31) is suspended at the bottom of the hanging ring (33), and a top limiting member (32) for limiting the sleeve position of the hanging ring (33) is installed between the first vertical pole group (21) and the second vertical pole group (22).

6. The steel cable tension detection device for lifting equipment according to claim 5, characterized in that: The top limiting member (32) comprises a suspension rod (321), wherein the four corners of the suspension rod (321) are respectively connected to the surfaces of the first support rod (211), the second support rod (212), the third support rod (221), and the fourth support rod (222); two limiting baffles (322) are fixedly mounted on the bottom of the middle end of the suspension rod (321), and a limiting cavity (323) is formed between the two limiting baffles (322).

7. The wire rope tension detection device for lifting equipment according to claim 1, characterized in that: Two extension plates (41) are provided, which are respectively mounted inside the first vertical pole group (21) and the second vertical pole group (22). A sliding hole (42) capable of passing a steel cable is provided in the middle of the extension plate (41). The inner diameter of the sliding hole (42) is in contact with the surface of the steel cable to be tested.

8. The wire rope tension detection device for lifting equipment according to claim 5, characterized in that: The top of the inner cavity of the hanging ring (33) is provided with an installation groove, and a lubricating bag (5) is mounted inside the installation groove. A lubricating cavity is provided inside the lubricating bag (5), and a plurality of outlet holes (51) are provided at the bottom of the inner cavity of the lubricating cavity. During the process of winding the steel cable to detect the tension, the lubricating oil stored in the lubricating cavity can slide out from the outlet holes (51) and drip onto the surface of the steel cable.

9. The wire rope tension detection device for lifting equipment according to claim 7, characterized in that: A side bag (43) is installed on the surface of the sliding hole (42) close to the second vertical pole group (22), and a storage cavity (44) is formed inside the side bag (43).

10. The steel cable tension detection device for lifting equipment according to claim 5, characterized in that: Both sides of the hanging ring (33) are provided with side fillets (6) for reducing the sliding friction of the steel cable.

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