An elevator door machine steel wire rope durability test device

Abstract

This invention relates to the field of wire rope testing technology, and more particularly to a durability testing device for elevator door operator wire ropes. The technical solution includes a detection structure, a placement structure, a fixing structure, a drive structure, and a testing structure. The detection structure includes a base and a wire rope flaw detector; the placement structure includes a placement plate, a bottom cable, and a support base; the drive structure includes a hydraulic cylinder and a stroke ring plate, the hydraulic cylinder being fixed to the upper end of the base and driving the stroke ring plate to move longitudinally; the fixing structure is used to clamp and fix the elevator door operator wire rope to be tested. This invention allows for simultaneous durability testing of multiple groups, uses a counterweight structure to reproduce real working conditions, guide wheels to standardize the wire rope trajectory, and a worm gear and elastic clamping structure for secure fixation, preventing wire rope slippage. The flaw detector monitors damage in real time, and data is displayed instantly. It integrates tensile testing and non-destructive testing, significantly improving testing efficiency and accuracy.

Description

Technical Field

[0001] This invention relates to the field of wire rope testing technology, and in particular to a device for testing the durability of elevator door operator wire ropes. Background Technology

[0002] The steel wire rope of the elevator door operator is responsible for driving the opening and closing of the car door and landing door. It is subjected to reciprocating tension, friction, and alternating loads over a long period of time, making it prone to damage such as wire breakage, wear, and corrosion. Durability testing involves simulating actual working conditions through repeated traction operations, combined with real-time monitoring of damage changes using flaw detection equipment. This verifies the service life and reliability of the steel wire rope and is a key process for controlling product quality and ensuring the safe operation of the elevator door system.

[0003] Elevator door operator wire ropes are the core transmission components for the opening and closing of car and landing doors, and their durability directly affects elevator safety. Currently, traditional testing equipment is limited in function, mostly capable of only simple reciprocating tensile tests, unable to simultaneously perform non-destructive testing, requiring two separate testing processes, resulting in cumbersome procedures and low testing efficiency. Existing devices are mostly single-unit testing structures, making it difficult to test multiple samples simultaneously, limiting testing capacity. Furthermore, conventional clamping structures have poor stability, leading to wire rope slippage and displacement during testing, affecting the accuracy of test data. The lack of counterweight simulation and guide limiting mechanisms makes it impossible to replicate the actual stress and friction conditions in an elevator environment, resulting in insufficient test results for accurate assessment of aging and damage after long-term use, failing to meet the needs of batch testing and high-precision testing. Therefore, those skilled in the art have provided an elevator door operator wire rope durability testing device to address the problems mentioned in the background. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the background art by proposing a durability testing device for elevator door operator wire ropes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an elevator door operator wire rope durability testing device, comprising a detection structure, a placement structure, a fixing structure, a driving structure and a testing structure, wherein the detection structure includes a base and a wire rope flaw detector; The placement structure includes a placement plate, a bottom cable, and a support base. The bottom cable is connected to the support base and the placement plate. The support base is arranged in a ring array above the base. The driving structure includes a hydraulic cylinder and a stroke ring plate. The hydraulic cylinder is fixed to the upper end of the base and drives the stroke ring plate to move longitudinally. The fixing structure is used to clamp and fix the elevator door operator wire rope to be tested; the fixing structure includes two sets of clamping components respectively fixed on the upper end of the support base and the upper end of the travel ring plate, and the two sets of clamping components are distributed in a ring array.

[0006] Preferably, the test structure includes a rope support fixed on the upper end of the base in a circular array and located outside the travel ring plate. The upper end of the rope support is rotatably mounted with a first guide wheel in a circular array. The first guide wheel is used to guide the travel trajectory of the elevator door operator wire rope under test.

[0007] Preferably, a second guide wheel is rotatably mounted on the inner side of the lower part of the rope support. The second guide wheel is used to provide rolling support for the bottom cable and guide the walking trajectory.

[0008] Preferably, the upper end of the placement plate is provided with weights that are equidistantly distributed longitudinally, one end of each weight being open for fitting onto the outside of the bottom cable. A sliding sleeve is embedded inside the placement plate, and multiple symmetrically distributed guide rods are provided on the upper end of the base. The bottom cable at the upper end of the placement plate is longitudinally distributed after being guided by a second guide wheel.

[0009] Preferably, the guide rod is longitudinally inserted into the sliding sleeve, and the placement plate is longitudinally sleeved on the outer wall of the guide rod through the sliding sleeve, so that the placement plate and the weight can move stably in the longitudinal direction.

[0010] Preferably, the upper telescopic rod of the hydraulic cylinder is provided with a top block, and a support rod 3 arranged in a ring array is provided between the stroke ring plate and the top block. The hydraulic cylinder is located inside the stroke ring plate 405. The upper end of the base is provided with a guide rail arranged in a ring array, and the guide rail is provided with a longitudinal raceway inside. The lower end of the stroke ring plate is provided with a bottom rod arranged in a ring array, and the lower end of the bottom rod is rolled with steel balls that roll and fit against the raceway on the inner wall of the guide rail.

[0011] Preferably, the upper end of the base is provided with a control box and a display panel. The control box controls the operation of the hydraulic cylinder, and the display panel displays the detection data fed back by the wire rope flaw detector. The wire rope flaw detector is sleeved on the outside of the elevator door operator's wire rope and connected to the rope path. The wire rope flaw detector includes a main sleeve and a built-in detection module. The lower end of the main sleeve has a groove for the elevator door operator's wire rope to pass through. The detection module consists of a permanent magnetization component and a magnetic sensor array, which are fixed inside the main sleeve. The permanent magnetization component is used to saturate the passing elevator door operator's wire rope. The magnetic sensor array can capture the leakage magnetic signals generated by the wire rope due to broken wires, wear, and corrosion in real time, and convert the magnetic signals into electrical signals. The module is electrically connected to the display panel through a connecting cable to transmit detection data in real time, realizing non-destructive testing of hidden defects inside the wire rope and determining the safe operating status of the elevator door operator's wire rope.

[0012] Preferably, the fixing structure includes a first bearing bracket, a second bearing bracket, a rotating ring, a ring frame, a positioning block, a clamping rod, and a clamping block. A worm gear is rotatably installed inside the first bearing bracket, and a handle is provided at one end of the worm gear. A support shaft is rotatably installed inside the second bearing bracket. A worm wheel that meshes with the worm gear is fixedly sleeved on the outer wall of the support shaft. A positioning groove for clamping and positioning the steel wire rope of the elevator door operator is provided at one end of the support shaft. The positioning groove is a groove opened along the axial direction.

[0013] Preferably, the outer wall of the support shaft is provided with a first support rod arranged in a ring array and connected to the outer wall of the support shaft. The ring frame is fixed on the base and located between the first bearing bracket and the rotating ring. The positioning blocks are arranged in a ring array and located on one side of the rotating ring. A second support rod is connected between the rotating ring and the positioning block. A through hole is embedded in the positioning block. The clamping rod is slidably installed in the through hole. The clamping block is located at one end of the clamping rod.

[0014] Preferably, a spring is provided between the positioning block and the clamping block, which is fitted on the outside of the clamping rod. The inner wall of the clamping block is provided with multiple sets of anti-slip pads. A ball bearing is rotatably installed inside one end of the clamping rod. The inner wall of the rotating ring is provided with extrusion blocks arranged in a ring array and in contact with the ball bearing.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention's clamping structure clamps both ends of the elevator door operator's wire rope. The worm gear and worm engage to provide stable clamping. The elevator door operator's wire rope is guided by a first guide wheel for the testing path. A hydraulic cylinder drives a stroke ring plate to move longitudinally, pulling one end of the elevator door operator's wire rope. The stroke ring plate moves longitudinally repeatedly. The support base and the placement plate are connected by a bottom cable, and one end of the elevator door operator's wire rope is connected to the placement plate for placing weights. This simulates the counterweight situation when the wire rope is connected to the elevator door during use, and simulates the friction process with the first guide wheel for durability testing. During the testing process, a wire rope flaw detector is used for real-time detection, which can promptly understand the wear and tear of the elevator door operator's wire rope. Multiple sets of elevator door operator's wire ropes can be tested simultaneously, which is highly efficient and convenient. Attached Figure Description

[0016] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention; Figure 2 This is a side-view perspective view of the three-dimensional structure of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the main 3D structure after the base is hidden; Figure 4 This is a front-view perspective three-dimensional structural diagram of the hydraulic cylinder of the present invention; Figure 5This is a front-view perspective three-dimensional structural diagram of the clamping structure of the present invention; Figure 6 This is a front-view perspective three-dimensional structural diagram of the rope-walking support of the present invention; Figure 7 This is a front-view perspective three-dimensional structural diagram of the support base of the present invention; Figure 8 This is a side perspective three-dimensional structural diagram of the first bearing bracket of the present invention; Figure 9 This is a side-view perspective three-dimensional structural diagram of the ring frame of the present invention; Figure 10 This is a side-view perspective three-dimensional structural diagram of the rotating ring of the present invention; Figure 11 This is a bottom-view perspective view of the extrusion block structure of the present invention.

[0017] Figure label: 100. Detection structure; 101. Base; 102. Control box; 103. Display panel; 104. Wire rope flaw detector; 200. Placement structure; 201. Placement plate; 202. Sliding sleeve; 203. Guide rod; 204. Bottom cable; 205. Weight; 206. Support base; 300. Fixed structure; 301. First bearing bracket; 302. Worm gear; 303. Handle; 304. Worm wheel; 305. Rotating ring; 306. First support rod; 307. Ring frame; 308. Second support rod; 309. Positioning block; 310. Clamping rod; 311. Ball bearing; 312. Spring; 313. Clamping block; 314. Anti-slip pad; 315. Through hole; 316. Extrusion block; 317. Support shaft; 318. Positioning groove; 319. Second bearing bracket; 400. Drive structure; 401. Hydraulic cylinder; 402. Base rod; 403. Steel ball; 404. Guide rail; 405. Stroke ring plate; 406. Support rod three; 407. Top block; 500. Test structure; 501. Rope support; 502. First guide wheel; 503. Second guide wheel. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1 to 11 The present invention provides four embodiments: Example 1: As Figure 1 , 2 A durability testing device for elevator door operator wire rope includes a detection structure 100, a placement structure 200, a fixing structure 300, a driving structure 400, and a testing structure 500. The detection structure 100 includes a base 101 and a wire rope flaw detector 104. like Figure 7 The placement structure 200 includes a placement plate 201, a bottom cable 204 and a support base 206. The bottom cable 204 is connected to the support base 206 and the placement plate 201. The support bases 206 are arranged in a ring array above the base 101. like Figure 4 The drive structure 400 includes a hydraulic cylinder 401 and a stroke ring plate 405. The hydraulic cylinder 401 is fixed on the upper end of the base 101 and drives the stroke ring plate 405 to move longitudinally. like Figure 2 , 3 The fixing structure 300 is used to clamp and fix the elevator door operator wire rope to be tested. The fixing structure 300 includes two sets of clamping components respectively fixed on the upper end of the support base 206 and the upper end of the travel ring plate 405, and the two sets of clamping components are arranged in a ring array.

[0020] like Figure 5 , 6 The test structure 500 includes a rope support 501 fixed on the upper end of the base 101 in a circular array and located outside the travel ring plate 405. The upper end of the rope support 501 is rotatably mounted with a first guide wheel 502 in a circular array. The first guide wheel 502 is used to guide the travel trajectory of the elevator door operator wire rope under test.

[0021] like Figure 5 , 6 A second guide wheel 503 is rotatably mounted on the inner side of the lower part of the rope support 501. The second guide wheel 503 is used to provide rolling support for the bottom cable 204 and guide its walking trajectory. The bottom cable 204 at the upper end of the placement plate 201 is longitudinally distributed after being guided by the second guide wheel 503.

[0022] like Figures 1-7 In this embodiment, before the test, the two ends of the steel wire rope to be tested are respectively installed on the fixed structure 300 above the support base 206 and the stroke ring plate 405 to complete the clamping and positioning. The rope support 501 and the first guide wheel 502 are in line with the direction of the steel wire rope to guide and limit the rope throughout the entire process to avoid deviation and twisting during operation. The bottom cable 204 is erected above the second guide wheel 503, which provides rolling support to ensure that the bottom cable 204 moves smoothly. After the equipment is started, the hydraulic cylinder 401 on the base 101 continuously reciprocates and extends, driving the stroke ring plate 405 to make longitudinal linear motion, thereby repeatedly pulling the steel wire rope to be tested to simulate the reciprocating tension condition when the elevator door machine is actually opening and closing. The placement plate 201 is connected to the support base 206 via the bottom cable 204 and moves synchronously with the steel wire rope, restoring the on-site counterweight stress state. The entire circular arrangement of the workstations can simultaneously conduct tests on multiple sets of steel wire ropes. The first guide wheel 502 and the second guide wheel 503 respectively constrain the movement trajectory of the steel wire rope and the bottom cable 204, reducing friction deviation. Throughout the test, the steel wire rope flaw detector 104 is sleeved on the outside of the rope to be tested, collecting real-time damage data such as rope wear, broken wires, and corrosion, and simultaneously completing durability mechanical testing and non-destructive testing. The hydraulic cylinder 401 cyclically drives the alternating load to continuously test the fatigue resistance of the steel wire rope. Each guide component ensures that the stress conditions of each set of samples are consistent, and finally, the durability performance and safety status of the steel wire rope are comprehensively judged.

[0023] The support base 206 and the rope support 501 are made of steel cut and welded, with assembly holes precisely positioned according to the dimensions of the annular array. The first guide wheel 502 and the second guide wheel 503 are made of wear-resistant engineering plastic coated with metal wheel cores, and the wheel axles are precision machined and press-fitted with bearings to ensure flexible rotation. The stroke ring plate 405 is made of rolled and welded steel plate, and the end face is milled to provide the assembly position for installing the fixing structure 300. The hydraulic cylinder 401 is a standard hydraulic component, fixed to the preset mounting surface of the base 101 by a flange. The bottom cable 204 is made of high-strength flexible cable, and the placement plate 201 is made of cut steel plate. First, the support base 206, the rope support 501 and the guide wheels are fixed, then the hydraulic cylinder 401 and the stroke ring plate 405 are assembled, connecting the bottom cable 204 and the placement plate 201. Finally, the fixing structure 300 and the wire rope flaw detector 104 are installed. The whole machine is powered on and oiled to test the reciprocating stroke and guiding accuracy.

[0024] Adopting a ring-shaped multi-station layout, multiple wire ropes can be tested simultaneously, significantly improving testing efficiency. The guide wheel structure guides and limits the wire rope and bottom cable 204 respectively, ensuring a regular movement trajectory and effectively reducing rope wear and displacement issues. Hydraulic cylinder 401 drives the stroke ring plate 405 to achieve stable reciprocating traction, accurately simulating the actual working load of the gantry crane. The equipment integrates flaw detection functions, completing mechanical durability testing and defect detection simultaneously without secondary transfer testing. The overall structure is rationally laid out, operates smoothly, has high test condition reproduction accuracy, and provides reliable test data. It solves the problems of single-rope testing and low efficiency of traditional equipment, improves the defects of wire rope misalignment and uneven stress during testing, and overcomes the drawbacks of separate and cumbersome operations for tensile testing and flaw detection, effectively improving test accuracy and testing efficiency.

[0025] Example 2: like Figure 7The upper end of the placement plate 201 is provided with weights 205 that are equidistantly distributed longitudinally. One end of the weights 205 is open for fitting onto the outside of the bottom cable 204. A sliding sleeve 202 is embedded inside the placement plate 201. The upper end of the base 101 is provided with multiple symmetrically distributed guide rods 203. The bottom cable 204 at the upper end of the placement plate 201 is longitudinally distributed after being guided by the second guide wheel 503.

[0026] like Figure 7 The guide rod 203 moves longitudinally and is inserted into the sliding sleeve 202. The placement plate 201 is sleeved on the outer wall of the guide rod 203 through the longitudinal movement of the sliding sleeve 202, so that the placement plate 201 and the weight 205 move longitudinally stably.

[0027] like Figures 1-7 In this embodiment, a counterweight and sliding guide structure are added to the original testing device to simulate the durability performance of the wire rope under different load conditions of the elevator door operator. Before the test, weights 205 of corresponding specifications are selected according to the test requirements. The open structure of the weights 205 is directly sleeved on the outside of the bottom cable 204 and arranged above the placement plate 201 to set different loading weights. The bottom cable 204 is limited and guided by the second guide wheel 503 to maintain a regular direction and ensure that the force transmission direction is not deviated. The placement plate 201 is equipped with a sliding sleeve 202 and the base 10. Symmetrical guide rods 203 are vertically arranged on the top. The sliding sleeve 202 and the guide rods 203 cooperate to form a linear sliding pair. When the hydraulic cylinder 401 drives the stroke ring plate 405 to reciprocate and pull the steel wire rope to be tested, the tension is transmitted to the bottom cable 204 through the rope and the support seat 206, which in turn pulls the entire placement plate 201 to make longitudinal linear reciprocating motion along the guide rods 203. The limiting effect of the guide rods 203 and the sliding sleeves 202 can prevent the placement plate 201 from swaying left and right or tilting and jamming, so that the load of the weight 205 is completely and evenly applied to the bottom cable 204 and the steel wire rope.

[0028] By changing the number and weight of the weights 205, the loading load can be flexibly switched, accurately simulating various actual working states of the elevator door operator, such as no load, half load, and full load. During the full-process reciprocating tensile test, the wire rope flaw detector 104 continuously monitors the damage of the rope. Combined with the fatigue performance under different counterweights, the wear resistance, tensile strength, and fatigue resistance of the wire rope under different load environments are comprehensively evaluated to ensure that the test data fits the actual use scenario on site. The placement plate 201 is made of thick steel plate and cut into shape. The plate surface is opened with holes at equal intervals for installing the sliding sleeve 202. After the holes are precision machined, the sliding sleeve 202 is pressed in and fixed by interference fit. The guide rod 203 is made of high-quality round steel and heat-treated. The surface is finely ground to improve the smoothness and wear resistance. Threads and mounting seats are machined at both ends, and it is vertically fixed on the base 101 to ensure verticality.

[0029] The weight 205 is cast iron and has an opening groove on one side. The groove is deburred and passivated, and the surface is sprayed with anti-rust paint. The second guide wheel 503 assembly is assembled according to the original process to ensure the guiding and supporting effect on the bottom cable 204. After all parts are processed, they are pre-assembled. First, the guide rod 203 is vertically fixed to the base 101. Then, the placement plate 201 is fitted onto the outside of the guide rod 203 through the sliding sleeve 202 to ensure smooth sliding without jamming. Then, the weights 205 are sequentially fitted onto the bottom cable 204. The reciprocating stroke of the placement plate 201 is adjusted, and the load transmission status after different weights 205 are assembled is verified. The whole system is tested to ensure the stable coordinated operation of the sliding mechanism and the counterweight structure.

[0030] By flexibly adjusting the loading weight by changing the weight 205, various actual load conditions of the elevator door operator can be simulated, resulting in a wider test coverage. The guide rod 203 and the sliding sleeve 202 form a guiding structure, ensuring that the placement plate 201 and the weight 205 move smoothly longitudinally without tilting or jamming, thus guaranteeing stable load output. The weight 205 adopts an open design, making disassembly and replacement convenient and significantly improving the efficiency of switching between operating conditions. The entire counterweight guiding structure is simple and reliable, and the load simulation is accurate, further enhancing the authenticity and reference value of the durability test data. This solves the problem that traditional testing devices cannot flexibly simulate different loads, compensates for the cumbersome disassembly and assembly of counterweights, and improves the situation of shaking, jamming, and uneven load when the placement plate 201 moves. It enables durability testing under multiple load conditions, making the test results more consistent with the actual field use environment.

[0031] Example 3: like Figure 4 The upper telescopic rod of the hydraulic cylinder 401 is provided with a top block 407. Between the stroke ring plate 405 and the top block 407, there are support rods 406 arranged in a ring array. The hydraulic cylinder 401 is located inside the stroke ring plate 405. The upper end of the base 101 is provided with a guide rail 404 arranged in a ring array. The guide rail 404 is provided with a longitudinal raceway inside. The lower end of the stroke ring plate 405 is provided with a bottom rod 402 arranged in a ring array. The lower end of the bottom rod 402 is rolled with steel balls 403 that roll and fit against the raceway inside the inner wall of the guide rail 404.

[0032] like Figure 4 The upper part of the base 101 is provided with a control box 102 and a display panel 103. The control box 102 controls the operation of the hydraulic cylinder 401, and the display panel 103 displays the detection data fed back by the wire rope flaw detector 104. The wire rope flaw detector 104 is sleeved on the outside of the elevator door operator's wire rope and connected to the rope path. like Figure 4The wire rope flaw detector 104 includes a main sleeve and a built-in detection module. The lower end of the main sleeve has a groove for the elevator door operator wire rope to pass through. The detection module consists of a permanent magnetization component and a magnetic sensor array, which are fixed in the inner cavity of the main sleeve. The permanent magnetization component is used to saturate the passing elevator door operator wire rope. The magnetic sensor array can capture the leakage magnetic signals generated by the wire rope due to broken wires, wear, and corrosion in real time, and convert the magnetic signals into electrical signals. The module is electrically connected to the display panel 103 through a connecting cable to transmit detection data in real time, realize non-destructive testing of hidden defects inside the wire rope, and determine the safe use status of the elevator door operator wire rope.

[0033] like Figures 1-7 In this embodiment, when the equipment is running, the control box 102 outputs commands to control the extension and retraction of the hydraulic cylinder 401. The extension and retraction rod of the hydraulic cylinder 401 drives the top block 407 to move synchronously. The top block 407 smoothly pushes the stroke ring plate 405 to move longitudinally as a whole through the ring-shaped support rods 406. The multiple support rods 406 transmit force evenly to ensure that the stroke ring plate 405 is subjected to balanced force. The bottom rod 402 below the stroke ring plate 405 is equipped with built-in steel balls 403. The steel balls 403 roll along the raceway of the longitudinal guide rail 404 on the base 101, converting sliding friction into rolling friction, which greatly reduces the motion resistance. At the same time, the guide rail 404 limits the bottom rod 402, constrains the movement trajectory of the stroke ring plate 405, prevents deviation and jamming, and ensures accurate and smooth reciprocating motion.

[0034] Throughout the wire rope durability test, the wire rope passes through the bottom groove at the lower end of the flaw detector's main sleeve. The permanent magnetization component inside the sleeve saturates the wire rope. When defects such as broken wires, wear, or corrosion occur in the rope, a leakage magnetic field is generated. The magnetic sensor array captures the magnetic signal in real time and converts it into an electrical signal. This electrical signal is transmitted to the display panel 103 via a connecting cable, allowing operators to view the flaw detection data, defect location, and damage extent in real time. The entire structure integrates mechanical drive, guided movement, online flaw detection, and data visualization. The cyclic reciprocating motion of the hydraulic cylinder 401 simulates the alternating stress conditions of the gantry crane's wire rope, while the rolling guide structure ensures long-term continuous operation stability. The flaw detection module monitors damage changes in real time, completing a comprehensive durability and safety performance test.

[0035] The hydraulic cylinder 401 and its matching top block 407 are made of steel plate by cutting and welding, and the end face is milled to ensure flatness. The support rod 406 is made of round steel, with threads machined at both ends, and is fastened to the top block 407 and the stroke ring plate 405 respectively. The guide rail 404 on the base 101 is made of profile steel by precision machining, with longitudinal raceways milled inside and hardened for wear resistance. The bottom rod 402 is machined as a whole, with holes at the end to press in steel balls 403, ensuring that the steel balls 403 rotate flexibly. The main sleeve of the wire rope flaw detector 104 is made of aluminum alloy, with a bottom groove milled at the lower end, and the inner cavity is fixed with permanent magnet magnetization components and magnetic sensing array. The control box 102 and the display panel 103 are made of sheet metal shell and integrated with circuitry, and the connecting cables are made of bend-resistant shielded cables.

[0036] All metal parts have undergone rust removal and anti-corrosion painting. During assembly, first fix the guide rail 404 and hydraulic cylinder 401, then assemble the base rod 402, steel balls 403, stroke ring plate 405, and support rod 406 in sequence; next, install the flaw detector and connect the wiring, and finally install the control box 102 and display panel 103. The entire machine is then tested for smoothness of reciprocating motion, rolling clearance, and signal transmission stability. The steel ball 403 and guide rail 404 form a rolling guide structure, resulting in low motion resistance and wear, allowing the equipment to operate continuously for extended periods. The annular support rod 406 distributes force evenly, and the stroke ring plate 405 runs smoothly and without deviation, improving test consistency. The flaw detector monitors internal defects in the wire rope online in real time, with data simultaneously displayed on the display panel 103, eliminating the need for machine downtime. The control box 102 centrally manages the movement of the hydraulic cylinder 401, making operation simple and convenient. The entire structure balances mechanical stability with real-time detection, extending equipment lifespan while improving testing efficiency and data intuitiveness. It solves the problems of high resistance, easy wear and jamming, and operational deviation inherent in traditional sliding guide structures, overcomes the inability to monitor wire rope damage in real time during testing, and improves the uneven force distribution and vibration of drive components, achieving integrated testing, inspection, and data display.

[0037] Example 4: like Figures 8-11 The fixed structure 300 includes a first bearing bracket 301, a second bearing bracket 319, a rotating ring 305, a ring frame 307, a positioning block 309, a clamping rod 310, and a clamping block 313. A worm gear 302 is rotatably mounted inside the first bearing bracket 301, and a handle 303 is provided at one end of the worm gear 302. A support shaft 317 is rotatably mounted inside the second bearing bracket 319. A worm wheel 304 that meshes with the worm gear 302 is fixedly sleeved on the outer wall of the support shaft 317. A positioning groove 318 for clamping and positioning the steel wire rope of the elevator door operator is opened at one end of the support shaft 317. The positioning groove 318 is a groove opened along the axial direction.

[0038] like Figures 8-11The outer wall of the support shaft 317 is provided with a first support rod 306 arranged in a ring array and connected to the outer wall of the support shaft 317. The ring frame 307 is fixed on the base 101 and located between the first bearing bracket 301 and the rotating ring 305. The positioning blocks 309 are arranged in a ring array and located on one side of the rotating ring 305. A second support rod 308 is connected between the rotating ring 305 and the positioning block 309. A through hole 315 is embedded in the positioning block 309. The clamping rod 310 is slidably installed in the through hole 315. The clamping block 313 is located at one end of the clamping rod 310.

[0039] like Figures 8-11 A spring 312 is provided between the positioning block 309 and the clamping block 313 and is fitted on the outside of the clamping rod 310. Multiple anti-slip pads 314 are provided on the inner wall of the clamping block 313. A ball bearing 311 is rotatably installed inside one end of the clamping rod 310. The inner wall of the rotating ring 305 is provided with pressing blocks 316 arranged in a ring array and in contact with the ball bearing 311.

[0040] like Figure 1 , Figure 2 , Figures 8-11 In this embodiment, during the clamping operation, the end of the elevator door operator's wire rope is placed into the positioning groove 318 at the end of the support shaft 317. The rotating handle 303 drives the worm gear 302 to rotate, and through meshing transmission, the worm wheel 304 and the support shaft 317 rotate synchronously. The support shaft 317 drives the rotating ring 305 to rotate as a whole through the first ring-distributed support rod 306. The pressing block 316 on the inner wall of the rotating ring 305 rotates accordingly, gradually pressing the ball 311 at the end of the clamping rod 310, pushing the clamping rod 310 to slide inward along the through hole 315 of the positioning block 309. The clamping block 313 at the front end of the clamping rod 310 moves forward synchronously to press the wire rope. The anti-slip pad 314 on the inner side of the clamping block 313 increases the friction of the contact surface to prevent the rope from slipping during the test. The spring 312 between the positioning block 309 and the clamping block 313 is in a compressed state, continuously providing pre-tightening force to ensure stable clamping force.

[0041] The entire structure adopts a ring array arrangement, which can simultaneously clamp and fix multiple wire ropes. When the test is completed and the wire ropes need to be removed, the handle 303 is rotated in the opposite direction. The worm 302 and worm wheel 304 drive the rotating ring 305 to return to its original position. The squeezing block 316 releases the pushing action on the ball 311. The spring 312 rebounds and pulls the clamping block 313 to reset and release the rope. This clamping mechanism combines the dual effects of mechanical self-locking and elastic clamping. Under the reciprocating pull and alternating load of the hydraulic cylinder 401, the wire rope position is always fixed. It works with the whole machine to complete the reciprocating tensile durability test, ensuring that the clamping state of each group of samples is uniform and the test data is accurate and effective.

[0042] The first bearing bracket 301 and the second bearing bracket 319 are formed by cutting, bending and welding steel plates, with pre-reserved assembly holes and precision machining to ensure coaxiality. The worm gear 302 and worm wheel 304 are made of alloy steel with milled teeth, and are hardened and tempered to improve hardness and wear resistance. After assembly, they ensure reasonable meshing clearance and smooth rotation. The support shaft 317 is made of round steel with precision machining, and the end is milled with positioning groove 318. The outer wall is welded to fix the first support rod 306. The ring frame 307, positioning block 309 and rotating ring 305 are made of steel plates cut and welded. The center of the positioning block 309 has a precision machined through hole 315. The clamping rod 310 is made of round steel with turning, and the end is fitted with rotatable ball bearings 311. The inner side of the clamping block 313 is pasted with a wear-resistant and anti-slip pad 314. The spring 312 is made of high-quality spring steel and is rolled and tempered.

[0043] The worm gear 302 and worm wheel 304 transmission have self-locking characteristics, preventing the clamped cable from loosening under tensile load, ensuring high reliability. Spring 312, in conjunction with clamping block 313, forms an elastic clamping mechanism, distributing force evenly and preventing damage to the wire rope. Anti-slip pad 314 further enhances friction, preventing rope slippage during testing. Multiple ring-shaped clamping positions can simultaneously fix multiple samples, adapting to the multi-station testing requirements of the device. The entire operation requires only rotating the handle 303 to complete clamping and disassembly, making it simple and labor-saving. The structure is durable and maintains stable clamping even under long-term repetitive testing conditions. This solves the problems of insecure clamping and wire rope slippage during testing associated with traditional clamps, overcomes the shortcomings of ordinary rigid clamping blocks 313 (easily damaging the rope and cumbersome assembly / disassembly), and improves the low testing efficiency of single-clamp sets, ensuring stable and accurate data during durability testing. The above specific embodiments are merely several preferred embodiments of the present invention. Based on the technical solution of the present invention and the related teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A durability testing device for elevator door operator wire ropes, comprising a detection structure (100), a placement structure (200), a fixing structure (300), a driving structure (400), and a testing structure (500), characterized in that: The detection structure (100) includes a base (101) and a wire rope flaw detector (104). The placement structure (200) includes a placement plate (201), a bottom cable (204), and a support base (206). The bottom cable (204) is connected to the support base (206) and the placement plate (201). The support bases (206) are arranged in a ring array above the base (101). The drive structure (400) includes a hydraulic cylinder (401) and a stroke ring plate (405). The hydraulic cylinder (401) is fixed on the upper end of the base (101), and the hydraulic cylinder (401) drives the stroke ring plate (405) to move longitudinally. The fixing structure (300) is used to clamp and fix the elevator door operator wire rope to be tested; the fixing structure (300) includes two sets of clamping components respectively fixed on the upper end of the support base (206) and the upper end of the travel ring plate (405), and the two sets of clamping components are arranged in a ring array.

2. The elevator door operator wire rope durability testing device according to claim 1, characterized in that: The test structure (500) includes a rope support (501) fixed on the upper end of the base (101) in a circular array and located outside the travel ring plate (405). The upper end of the rope support (501) is rotatably mounted with a first guide wheel (502) in a circular array. The first guide wheel (502) is used to guide the travel trajectory of the elevator door operator wire rope under test.

3. The elevator door operator wire rope durability testing device according to claim 2, characterized in that: The lower inner side of the rope support (501) is rotatably mounted with a second guide wheel (503), which is used to provide rolling support for the bottom cable (204) and guide its walking trajectory.

4. The elevator door operator wire rope durability testing device according to claim 3, characterized in that: The upper end of the placement plate (201) is provided with weights (205) that are evenly distributed longitudinally. One end of the weights (205) is open and used to fit around the outside of the bottom cable (204). A sliding sleeve (202) is embedded inside the placement plate (201). The upper end of the base (101) is provided with multiple symmetrically distributed guide rods (203). The bottom cable (204) at the upper end of the placement plate (201) is longitudinally distributed after being guided by the second guide wheel (503).

5. The elevator door operator wire rope durability testing device according to claim 4, characterized in that: The guide rod (203) moves longitudinally and is inserted into the sliding sleeve (202). The placement plate (201) moves longitudinally through the sliding sleeve (202) and is sleeved on the outer wall of the guide rod (203), so that the placement plate (201) and the weight (205) move stably longitudinally.

6. The elevator door operator wire rope durability testing device according to claim 1, characterized in that: The upper telescopic rod of the hydraulic cylinder (401) is provided with a top block (407). A support rod (406) arranged in a ring array is provided between the stroke ring plate (405) and the top block (407). The hydraulic cylinder (401) is located inside the stroke ring plate (405). The upper end of the base (101) is provided with a guide rail (404) arranged in a ring array. The guide rail (404) is provided with a longitudinal raceway inside. The lower end of the stroke ring plate (405) is provided with a bottom rod (402) arranged in a ring array. The lower end of the bottom rod (402) is rolled with a steel ball (403) that rolls and fits against the raceway on the inner wall of the guide rail (404).

7. The elevator door operator wire rope durability testing device according to claim 1, characterized in that: The base (101) is provided with a control box (102) and a display panel (103) at its upper end. The control box (102) controls the operation of the hydraulic cylinder (401), and the display panel (103) displays the detection data fed back by the wire rope flaw detector (104). The wire rope flaw detector (104) is sleeved on the outside of the elevator door operator's wire rope and connected to the rope path. The wire rope flaw detector (104) includes a main sleeve and a built-in detection module. The bottom of the main sleeve is provided with a groove for the elevator door operator wire rope to pass through. The detection module is composed of a permanent magnetization component and a magnetic sensor array, which are fixed in the inner cavity of the main sleeve. The permanent magnetization component is used to saturate the passing elevator door operator wire rope. The magnetic sensor array captures the leakage magnetic signal generated by the wire rope due to broken wires, wear, and corrosion in real time, and converts the magnetic signal into an electrical signal. The module is electrically connected to the display panel (103) through a connecting cable to transmit detection data in real time, realize non-destructive testing of hidden defects inside the wire rope, and determine the safe use status of the elevator door operator wire rope.

8. The elevator door operator wire rope durability testing device according to claim 1, characterized in that: The fixed structure (300) includes a first bearing bracket (301), a second bearing bracket (319), a rotating ring (305), a ring frame (307), a positioning block (309), a clamping rod (310), and a clamping block (313). A worm gear (302) is rotatably installed inside the first bearing bracket (301). A handle (303) is provided at one end of the worm gear (302). A support shaft (317) is rotatably installed inside the second bearing bracket (319). A worm wheel (304) that meshes with the worm gear (302) is fixedly sleeved on the outer wall of the support shaft (317). A positioning groove (318) for clamping and positioning the steel wire rope of the elevator door operator is opened at one end of the support shaft (317). The positioning groove (318) is a groove opened along the axial direction.

9. The elevator door operator wire rope durability testing device according to claim 8, characterized in that: The outer wall of the support shaft (317) is provided with a first support rod (306) arranged in a ring array and connected to the outer wall of the support shaft (317). The ring frame (307) is fixed on the base (101) and located between the first bearing bracket (301) and the rotating ring (305). The positioning block (309) is arranged in a ring array and located on one side of the rotating ring (305). A second support rod (308) is connected between the rotating ring (305) and the positioning block (309). A through hole (315) is embedded in the positioning block (309). The clamping rod (310) is slidably installed in the through hole (315). The clamping block (313) is located at one end of the clamping rod (310).

10. The elevator door operator wire rope durability testing device according to claim 9, characterized in that: A spring (312) is provided between the positioning block (309) and the clamping block (313) and is fitted on the outside of the clamping rod (310). Multiple anti-slip pads (314) are provided on the inner wall of the clamping block (313). A ball bearing (311) is rotatably installed inside one end of the clamping rod (310). The inner wall of the rotating ring (305) is provided with extrusion blocks (316) arranged in a ring array and in contact with the ball bearing (311).

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