Safety rope wear resistance detection device

Abstract

The invention discloses a safety rope wear resistance detection device which comprises a test board, a reciprocating driving mechanism, a friction mechanism, a counterweight mechanism, a dynamic tension adjusting assembly and two positioning mechanisms, a transverse guide rail is arranged at the top of the test board, a sliding plate is arranged on the transverse guide rail, and the reciprocating driving mechanism is connected with the sliding plate; the counterweight mechanism is arranged on one side of the test board in an up-and-down sliding mode, the friction mechanism is arranged on the test board, the limiting mechanism is connected with the mounting frame in an up-and-down sliding mode, the rotating plate is rotationally arranged on the fixing frame, the rotating plate is driven by the rotating driving mechanism, and the dynamic eccentric distance adjusting mechanism is arranged on the rotating plate and connected with the limiting mechanism through a connecting rod. The vibration mechanism is arranged on the limiting mechanism and connected with the rotation driving mechanism through the linkage mechanism. Therefore, the conditions of continuous change of tension and self vibration of the safety rope in the actual use process can be effectively simulated, so that the comprehensiveness and the accuracy of wear resistance detection indexes of the safety rope are effectively improved.

Description

Technical Field

[0001] This application relates to the technical field of rope detection, and particularly to a safety rope abrasion resistance detection device. Background Art

[0002] As a key equipment to ensure the life safety of personnel, safety ropes are widely used in many fields such as construction, outdoor sports, and high-altitude operations. During actual use, the safety rope will rub against the surfaces of various objects, and its abrasion resistance directly affects whether it can function reliably at critical moments and ensure the life safety of users. If the abrasion resistance of the safety rope is poor, it may show wear, fracture, etc. after a short period of use, resulting in serious safety accidents. Therefore, it is crucial to detect the abrasion resistance of safety ropes.

[0003] In related technologies, a relatively common method for detecting the abrasion resistance of safety ropes is to fix one end of the safety rope and hang an object of a certain weight at the other end to keep it in a taut state. Then, an electric motor is used to drive a friction block with a specific friction material, and the friction block is made to move relative to the surface of the safety rope. By continuously rubbing the friction block against the safety rope, the friction effect that the safety rope experiences during actual use is simulated. After a certain period of time or a certain number of friction times, the wear condition of the safety rope surface is observed, such as the wear depth, wear area, and fiber fracture condition, etc., to evaluate the abrasion resistance of the safety rope.

[0004] However, the above detection method still has significant drawbacks. In actual rescue scenarios, the movement of personnel will cause the tension on the safety rope to be constantly in a dynamic change, and at the same time, when encountering bad weather such as strong winds, the safety rope itself will also vibrate. However, the existing safety rope abrasion resistance detection devices can only achieve simple friction simulation and cannot accurately reproduce such complex and changeable actual use conditions. The detection indicators for the wear degree of the safety rope are not comprehensive enough, so it is difficult to make an accurate and sufficient determination of the abrasion resistance of the safety rope, affecting the evaluation of the actual use reliability of the safety rope. Summary of the Invention

[0005] This application aims to solve at least one of the technical problems in the related technologies to some extent.

[0006] For this reason, an object of this application is to provide a safety rope abrasion resistance detection device, which can effectively simulate the situation where the tension on the safety rope changes continuously and the rope vibrates during actual use, thereby effectively improving the comprehensiveness and accuracy of the safety rope abrasion resistance detection indicators.

[0007] To achieve the above object, an embodiment of the first aspect of the present application provides a safety rope abrasion resistance detection device, including a test bench, a reciprocating drive mechanism, a friction mechanism, a counterweight mechanism, a dynamic tension adjustment component, and two positioning mechanisms. Among them, a horizontal guide rail is provided on the top of the test bench, and a sliding plate is slidably provided on the horizontal guide rail; the reciprocating drive mechanism is provided on the test bench and is connected to the sliding plate; the counterweight mechanism is provided on one side of the test bench and can slide up and down, and the two positioning mechanisms are respectively provided on the sliding plate and the counterweight mechanism; the friction mechanism is provided on the test bench and is located between the sliding plate and the counterweight mechanism; the dynamic tension adjustment component is provided on the test bench and is located between the sliding plate and the counterweight mechanism; the dynamic tension adjustment component includes a rotation drive mechanism, a rotating plate, an eccentric distance dynamic adjustment mechanism, a mounting frame, a fixing frame, a limiting mechanism, a vibration mechanism, and a linkage mechanism. Among them, the mounting frame and the fixing frame are respectively fixedly provided on the test bench, and the limiting mechanism is slidably connected to the mounting frame up and down; the rotating plate is rotatably provided on one side of the fixing frame close to the mounting frame, and the rotating plate is driven by the rotation drive mechanism; the eccentric distance dynamic adjustment mechanism is provided on the rotating plate, and the eccentric distance dynamic adjustment mechanism is connected to the limiting mechanism through a connecting rod; the vibration mechanism is provided on the limiting mechanism, and the vibration mechanism is connected to the rotation drive mechanism through the linkage mechanism.

[0008] The safety rope abrasion resistance detection device of the embodiment of the present application can effectively simulate the situation of the continuously changing tension and self-vibration of the safety rope during actual use, thereby effectively improving the comprehensiveness and accuracy of the safety rope abrasion resistance detection index.

[0009] In addition, the safety rope abrasion resistance detection device proposed above according to the present application may also have the following additional technical features: In an embodiment of the present application, the reciprocating drive mechanism includes a drive motor and a lead screw. Among them, the lead screw is rotatably provided on the test bench through a mounting seat, and the lead screw is arranged parallel to the horizontal guide rail; the lead screw penetrates the sliding plate and is threadedly connected to the sliding plate; the drive motor is provided on the test bench, and the output shaft of the drive motor is coaxially connected to one end of the lead screw through a coupling.

[0010] In an embodiment of the present application, the counterweight mechanism includes a plurality of counterweight blocks, a counterweight frame, and a counterweight guide rail. Among them, the counterweight guide rail is vertically arranged on one side of the test bench, and the counterweight frame is slidably connected to the counterweight guide rail up and down through a slider; the plurality of counterweight blocks are respectively detachably mounted on the counterweight frame.

[0011] In an embodiment of the present application, a guide wheel is further included. The guide wheel is rotatably arranged on the top of the test bench through a support frame, and one side of the guide wheel extends out of the test bench and is located above the counterweight frame.

[0012] In an embodiment of the present application, the friction mechanism includes a friction block, a positioning seat, a vertical electric slide table and a cylinder. Among them, the vertical electric slide table is arranged on the test bench, and the vertical electric slide table is perpendicular to the horizontal guide rail; the cylinder is arranged on the slider of the vertical electric slide table, and the cylinder is arranged vertically; the positioning seat is fixedly arranged on the movable end of the cylinder, and the friction block is fixedly arranged on the positioning seat.

[0013] In an embodiment of the present application, the rotation driving mechanism includes a rotation driving motor and a driving rod. Among them, the driving rod is rotatably arranged on the fixed frame, and the rotating plate is sleeved on the driving rod; the rotation driving motor is arranged on the test bench, and the output shaft of the rotation driving motor is coaxially connected to one end of the driving rod through a coupling.

[0014] In an embodiment of the present application, the eccentric distance dynamic adjustment mechanism includes an eccentric plate, a movable block, an adjustment screw and an adjustment motor. Among them, a guide groove is formed on one side of the rotating plate close to the mounting frame, and the movable block is slidably fitted in the guide groove; one side of the eccentric plate is fixedly connected to the movable block; the adjustment screw is rotatably arranged on the rotating plate, the adjustment screw penetrates through the movable block and is threadedly connected to the movable block; the adjustment motor is arranged on the rotating plate, and the output shaft of the adjustment motor is coaxially connected to one end of the adjustment screw through a coupling.

[0015] In an embodiment of the present application, the limiting mechanism includes a sliding tube, a limiting frame, a movable frame and a rotating roller. Among them, the sliding tube is slidably connected to the mounting frame up and down, and the limiting frame is fixedly arranged on the sliding tube; the movable frame is slidably arranged up and down in the limiting frame, and the rotating roller is rotatably arranged on the movable frame; a ring groove is formed on one side of the eccentric plate close to the limiting frame, one end of the connecting rod is fixedly connected to the sliding tube, and the other end of the connecting rod extends into the ring groove and is slidably fitted with the ring groove.

[0016] In an embodiment of the present application, the vibration mechanism includes a rotating shaft and a cam. Among them, the rotating shaft is rotatably arranged on the limiting frame, and the rotating shaft is located below the movable frame; the cam is sleeved on the rotating shaft, and the outer peripheral surface of the cam is in contact connection with the bottom of the movable frame.

[0017] In an embodiment of the present application, the linkage mechanism includes a first synchronous belt, a second synchronous belt, a transmission rod, a connecting seat, and a tension pulley. Among them, the transmission rod is rotatably arranged on the fixed frame, and the first synchronous belt is arranged on the transmission rod and the driving rod through pulley transmission; one end of the transmission rod extends into the sliding tube, and movable grooves adapted to the transmission rod are respectively formed on both sides of the sliding tube; the second synchronous belt is arranged on the rotating shaft and the transmission rod through pulley transmission; the connecting seat is located in the sliding tube, and both sides of the connecting seat respectively penetrate through the movable grooves and are slidably connected to the mounting frame back and forth; the tension pulley is rotatably arranged on the connecting seat, and the outer peripheral surface of the tension pulley is in rolling connection with the second synchronous belt; a slope is arranged on the back surface of the inner wall of the sliding tube, the slope is in contact connection with the connecting seat, and the top of the slope is inclined towards the direction close to the connecting seat.

[0018] Compared with the prior art, the beneficial effects of the present application are as follows: 1. By setting the eccentric distance dynamic adjustment mechanism, the present application can simulate the change of the rope force caused by factors such as personnel movement and speed in the actual rescue scenario, and dynamically adjust the tension borne by the safety rope. In this way, the dynamic force-bearing process of the safety rope in actual operation can be highly restored, overcoming the defect of single force-bearing state in the prior art, making the detection result more truly reflect the wear resistance of the safety rope under complex force conditions, and providing a more reliable basis for evaluating its reliability in actual use.

[0019] 2. By setting the vibration mechanism, the present application can simulate the vibration situation of the safety rope under harsh weather conditions such as strong wind. By vibrating the safety rope, the interaction between the safety rope and the friction material under the vibration environment and the resulting change in wear characteristics can be comprehensively investigated, which helps to more comprehensively understand the wear resistance performance of the safety rope in the actual harsh environment, makes up for the deficiency of the prior art in simulating complex environments, and further improves the accuracy and integrity of the evaluation of the wear resistance performance of the safety rope.

[0020] 3. With the setting of the linkage mechanism, both the eccentric distance dynamic adjustment mechanism and the vibration mechanism of the present application are driven by the rotation driving mechanism, thus effectively reducing the setting of the driving device, and further effectively reducing the production manufacturing and daily maintenance costs of the present application.

[0021] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0022] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, where: Figure 1 FIG. is a schematic diagram of the overall structure of a safety rope abrasion resistance detection device according to an embodiment of the present application; Figure 2 FIG. is a schematic diagram of the overall structure of a safety rope abrasion resistance detection device according to another embodiment of the present application; Figure 3 This application Figure 1 An enlarged view of part A in this application; Figure 4 This application Figure 2 An enlarged view of part B in this application; Figure 5 FIG. is a schematic diagram of the structure of a vibration mechanism of a safety rope abrasion resistance detection device according to an embodiment of the present application; Figure 6 FIG. is a schematic diagram of the structure of an eccentric distance dynamic adjustment mechanism of a safety rope abrasion resistance detection device according to an embodiment of the present application; Figure 7 FIG. is a schematic diagram of the structure of a linkage mechanism of a safety rope abrasion resistance detection device according to an embodiment of the present application; Figure 8 FIG. is a schematic diagram of the structure of an eccentric plate of a safety rope abrasion resistance detection device according to an embodiment of the present application.

[0023] As shown in the figure: 1. Test bench; 101. Horizontal guide rail; 102. Sliding plate; 2. Reciprocating drive mechanism; 201. Drive motor; 202. Lead screw; 3. Friction mechanism; 301. Friction block; 302. Positioning seat; 303. Vertical electric slide table; 304. Cylinder; 4. Counterweight mechanism; 401. Counterweight block; 402. Counterweight frame; 403. Counterweight guide rail; 5. Dynamic tension adjustment assembly; 51. Driving rotation mechanism; 511. Driving rotation motor; 512. Driving rod; 52. Rotating plate; 53. Eccentric distance dynamic adjustment mechanism; 531. Eccentric plate; 532. Movable block; 533. Adjusting screw; 534. Adjusting motor; 54. Mounting frame; 55. Fixed frame; 56. Limiting mechanism; 561. Sliding tube; 562. Limiting frame; 563. Movable frame; 564. Rotating roller; 57. Vibration mechanism; 571. Rotating shaft; 572. Cam; 58. Linkage mechanism; 581. First synchronous belt; 582. Second synchronous belt; 583. Transmission rod; 584. Connecting seat; 585. Tensioning wheel; 59. Connecting rod; 6. Positioning mechanism; 7. Guide wheel. Detailed implementation manners

[0024] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application.

[0025] The wear resistance detection device for a safety rope according to an embodiment of the present application will be described below in conjunction with the accompanying drawings.

[0026] As Figures 1 - 8 shown, the wear resistance detection device for a safety rope according to an embodiment of the present application may include a test bench 1, a reciprocating drive mechanism 2, a friction mechanism 3, a counterweight mechanism 4, a dynamic tension adjustment assembly 5, and two positioning mechanisms 6.

[0027] Among them, a horizontal guide rail 101 is provided on the top of the test bench 1, a sliding plate 102 is slidably provided on the horizontal guide rail 101, the reciprocating drive mechanism 2 is provided on the test bench 1, and the reciprocating drive mechanism 2 is connected to the sliding plate 102. The counterweight mechanism 4 is provided on one side of the test bench 1 and can slide up and down. The two positioning mechanisms 6 are respectively provided on the sliding plate 102 and the counterweight mechanism 4. The friction mechanism 3 is provided on the test bench 1 and is located between the sliding plate 102 and the counterweight mechanism 4. The dynamic tension adjustment assembly 5 is provided on the test bench 1 and is located between the sliding plate 102 and the counterweight mechanism 4.

[0028] The dynamic tension adjustment assembly 5 may include a rotation drive mechanism 51, a rotating plate 52, an eccentric distance dynamic adjustment mechanism 53, a mounting bracket 54, a fixing bracket 55, a limiting mechanism 56, a vibration mechanism 57, and a linkage mechanism 58.

[0029] Among them, the mounting bracket 54 and the fixing bracket 55 are respectively fixedly provided on the test bench 1. The limiting mechanism 56 is slidably connected to the mounting bracket 54 up and down. The rotating plate 52 is rotatably provided on one side of the fixing bracket 55 close to the mounting bracket 54, and the rotating plate 52 is driven by the rotation drive mechanism 51. The eccentric distance dynamic adjustment mechanism 53 is provided on the rotating plate 52, and the eccentric distance dynamic adjustment mechanism 53 is connected to the limiting mechanism 56 through a connecting rod 59. The vibration mechanism 57 is provided on the limiting mechanism 56, and the vibration mechanism 57 is connected to the rotation drive mechanism 51 through the linkage mechanism 58.

[0030] Specifically, when conducting the abrasion resistance test on the safety rope, the relevant personnel first fix both ends of the safety rope to be tested to two positioning mechanisms 6 respectively, and pass the safety rope through the limiting mechanism 56. At this time, the safety rope is in a taut state. Then, the relevant personnel drive the friction mechanism 3 to contact the safety rope. Subsequently, the relevant personnel start the reciprocating drive mechanism 2 to drive the safety rope to reciprocate on the surface of the friction mechanism 3, so that the safety rope makes relative movement with the surface of the friction mechanism 3, thereby simulating the frictional force received by the safety rope during actual use.

[0031] When it is necessary to simulate the situation where the tension on the safety rope changes dynamically due to the movement of personnel in the actual rescue scenario, and the safety rope vibrates due to bad weather such as strong winds, the relevant personnel start the drive mechanism 51 to drive the rotating plate 52 to rotate. The rotating plate 52 synchronously drives the eccentric distance dynamic adjustment mechanism 53 to rotate. The eccentric distance dynamic adjustment mechanism 53 continuously adjusts the eccentric distance from the rotating plate 52 during the rotation process, and then continuously adjusts the amplitude of the reciprocating lifting movement of the limiting mechanism 56 through the connecting rod 59, so as to realize the dynamic adjustment of the tension received during the abrasion resistance test of the safety rope. In this way, the dynamic force-bearing process of the safety rope during actual operation can be highly restored, overcoming the defect of a single force-bearing state in the prior art, making the test results more truly reflect the abrasion resistance of the safety rope under complex force-bearing conditions, and providing a more reliable basis for evaluating its reliability during actual use.

[0032] In addition, under the action of the linkage mechanism 58, the drive and rotation mechanism 51 also transmits kinetic energy to the vibration mechanism 57 to vibrate the safety rope through the vibration mechanism 57, thereby simulating the vibration of the safety rope under bad weather conditions such as strong winds. By vibrating the safety rope, the interaction between the safety rope and the friction material in the vibration environment and the resulting wear characteristic changes can be comprehensively investigated, which helps to more comprehensively understand the abrasion resistance performance of the safety rope in the actual harsh environment, makes up for the deficiency of the prior art in simulating complex environments, and further improves the accuracy and integrity of the evaluation of the abrasion resistance performance of the safety rope. Moreover, with the setting of the linkage mechanism 58, the eccentric distance dynamic adjustment mechanism 53 and the vibration mechanism 57 of the present application are both driven by the drive and rotation mechanism 51, thus effectively reducing the setting of drive devices, and further effectively reducing the production manufacturing and daily maintenance costs of the present application.

[0033] In an embodiment of the present application, as Figure 1 and Figure 2 shown, the reciprocating drive mechanism 2 may include a drive motor 201 and a lead screw 202.

[0034] Among them, the lead screw 202 is rotatably arranged on the test bench 1 through a mounting seat, and the lead screw 202 is arranged parallel to the transverse guide rail 101. The lead screw 202 passes through the sliding plate 102 and is threadedly connected to the sliding plate 102. The driving motor 201 is arranged on the test bench 1, and the output shaft of the driving motor 201 is coaxially connected to one end of the lead screw 202 through a coupling.

[0035] Specifically, after the driving motor 201 in the reciprocating driving mechanism 2 is powered on and started, the motor shaft starts to rotate. The motor shaft is rigidly connected to one end of the lead screw 202 through a coupling, and the rotational motion of the motor is transmitted to the lead screw 202. Since the lead screw 202 and the sliding plate 102 are in a threaded fit, according to the principle of screw drive, and the sliding plate 102 can only slide linearly on the transverse guide rail 101, the rotational motion of the lead screw 202 will be converted into the linear motion of the sliding plate 102. When the driving motor 201 rotates forward, the lead screw 202 rotates forward, driving the sliding plate 102 to move in one direction. When the driving motor 201 rotates reversely, the lead screw 202 rotates reversely, driving the sliding plate 102 to move in the opposite direction, thereby realizing the reciprocating movement of the safety rope in the horizontal direction and simulating the possible horizontal displacement of the safety rope during actual use.

[0036] As a possible situation, the reciprocating driving mechanism 2 described in this embodiment can also be replaced by a hydraulic cylinder in the prior art. By fixedly arranging the hydraulic cylinder on the test bench 1 and fixedly connecting the movable end of the hydraulic cylinder and the sliding plate 102, the sliding plate 102 can be reciprocally driven by the reciprocating telescopic movement of the movable end of the hydraulic cylinder.

[0037] In an embodiment of the present application, as Figure 1 and Figure 2 shown, the counterweight mechanism 4 may include a plurality of counterweight blocks 401, a counterweight frame 402, and a counterweight guide rail 403.

[0038] Among them, the counterweight guide rail 403 is vertically arranged along one side of the test bench 1. The counterweight frame 402 is slidably connected up and down to the counterweight guide rail 403 through a slider, and a plurality of counterweight blocks 401 are respectively detachably mounted on the counterweight frame 402.

[0039] It should be noted that the positioning mechanism 6 described in the above embodiments can adopt a cable clamping and fixing method, which is a common and reliable cable fixing method in the prior art. The positioning mechanism 6 mainly consists of a fixed seat, a movable clamping piece, a fastening bolt and an anti-slip pad. The fixed seat is firmly installed on the sliding plate 102 and the counterweight frame 402 by welding or bolt connection. The movable clamping piece is connected to the fixed seat by a pin shaft and can rotate around the pin shaft to realize the opening and closing operation of the safety rope. The fastening bolt passes through the corresponding threaded holes on the movable clamping piece and the fixed seat. When it is necessary to fix the safety rope, the safety rope is placed between the fixed seat and the movable clamping piece, and the fastening bolt is tightened to gradually press the movable clamping piece against the safety rope. The anti-slip pad is pasted on the surfaces of the fixed seat and the movable clamping piece in contact with the safety rope to increase the friction force and prevent the safety rope from sliding during the detection process. The positioning mechanism 6 can also directly adopt a fixed ring fixing method. The fixed rings are respectively fixedly arranged on the sliding plate 102 and the counterweight frame 402, and the two ends of the safety cable are respectively connected and fixed to the two fixed rings.

[0040] It should also be noted that the safety rope abrasion resistance detection device described in this embodiment may further include a guide wheel 7. The guide wheel 7 is rotatably arranged on the top of the test bench 1 through a support frame. One side of the guide wheel 7 extends out of the test bench 1 and is located above the counterweight frame 402. The guide wheel 7 is used to prevent the safety rope from contacting the test bench 1.

[0041] Specifically, the counterweight mechanism 4 provides an initial tension for the safety rope by adding or reducing counterweight blocks 401 on the counterweight frame 402. The counterweight frame 402 is slidably connected up and down with the counterweight guide rail 403 through a slider. Under the action of gravity, the counterweight frame 402 and the counterweight blocks 401 thereon generate a downward pulling force, which is transmitted to the safety rope to keep the safety rope in a taut state. By selecting counterweight blocks 401 of different weights and adjusting the number of counterweight blocks 401, the magnitude of the initial pulling force acting on the safety rope can be adjusted to simulate the initial tension borne by the safety rope in different actual use scenarios.

[0042] In an embodiment of the present application, as Figure 1 and Figure 2 shown, the friction mechanism 3 may include a friction block 301, a positioning seat 302, a vertical electric slide 303 and a cylinder 304.

[0043] Among them, the vertical electric slide 303 is arranged on the test bench 1. The vertical electric slide 303 is perpendicular to the transverse guide rail 101. The cylinder 304 is arranged on the slider of the vertical electric slide 303. The cylinder 304 is arranged vertically. The positioning seat 302 is fixedly arranged on the movable end of the cylinder 304. The friction block 301 is fixedly arranged on the positioning seat 302.

[0044] Specifically, the relevant personnel adjust the height of the friction block 301 through the cylinder 304 so that the top of the friction block 301 can contact the safety rope. When the safety rope makes a reciprocating linear motion driven by the reciprocating drive mechanism 2, relative motion is generated between the friction block 301 and the surface of the safety rope. According to the principle of friction generation, under the action of pressure and relative motion, friction is generated between the friction block 301 and the surface of the safety rope, thereby simulating the friction effect suffered by the safety rope during actual use. Among them, the vertical electric slide 303 is used to drive the friction block 301 to make a reciprocating motion back and forth to realize the detection of the friction force of the safety rope in the front and back directions.

[0045] In an embodiment of the present application, as Figures 1 - 8 shown, the rotation drive mechanism 51 may include a rotation drive motor 511 and a drive rod 512.

[0046] Among them, the drive rod 512 is rotatably arranged on the fixed frame 55, the rotating plate 52 is sleeved on the drive rod 512, the rotation drive motor 511 is arranged on the test bench 1, and the output shaft of the rotation drive motor 511 is coaxially connected to one end of the drive rod 512 through a coupling.

[0047] In an embodiment of the present application, the eccentric distance dynamic adjustment mechanism 53 may include an eccentric plate 531, a movable block 532, an adjustment screw 533, and an adjustment motor 534.

[0048] Among them, a guide groove is formed on one side of the rotating plate 52 close to the mounting frame 54, the movable block 532 is slidably fitted in the guide groove, one side of the eccentric plate 531 is fixedly connected to the movable block 532, the adjustment screw 533 is rotatably arranged on the rotating plate 52, the adjustment screw 533 penetrates through the movable block 532 and is threadedly connected to the movable block 532, the adjustment motor 534 is arranged on the rotating plate 52, and the output shaft of the adjustment motor 534 is coaxially connected to one end of the adjustment screw 533 through a coupling.

[0049] In an embodiment of the present application, the limiting mechanism 56 may include a sliding tube 561, a limiting frame 562, a movable frame 563, and a rotating roller 564.

[0050] Among them, the sliding tube 561 is slidably connected to the mounting frame 54 up and down, the limiting frame 562 is fixedly arranged on the sliding tube 561, the movable frame 563 is slidably arranged in the limiting frame 562 up and down, the rotating roller 564 is rotatably arranged on the movable frame 563, a ring groove is formed on one side of the eccentric plate 531 close to the limiting frame 562, one end of the connecting rod 59 is fixedly connected to the sliding tube 561, and the other end of the connecting rod 59 extends into the ring groove and is slidably fitted with the ring groove.

[0051] Specifically, after the drive motor 511 in the drive and rotation mechanism 51 is started, the motor shaft drives the drive rod 512 to rotate. The drive rod 512 drives the rotating plate 52 to rotate synchronously through key connection or coupling. When it is necessary to adjust the tension of the safety rope, the adjustment motor 534 in the eccentric distance dynamic adjustment mechanism 53 is started, and its output shaft drives the adjustment screw 533 to rotate through the coupling. Since the adjustment screw 533 is threadedly connected to the movable block 532, and the movable block 532 slides in the guiding groove of the rotating plate 52, according to the principle of screw drive and slider guiding, the rotation of the adjustment screw 533 causes the movable block 532 to move in the guiding groove, thereby changing the eccentric distance of the eccentric plate 531. As the rotating plate 52 continues to rotate, the eccentric distance of the eccentric plate 531 continuously changes.

[0052] The change in the eccentric distance of the eccentric plate 531 is transmitted to the limit mechanism 56 through the connecting rod 59. One end of the connecting rod 59 is fixedly connected to the sliding tube 561, and the other end is slidably engaged with the annular groove of the eccentric plate 531. When the eccentric plate 531 rotates, its annular groove drives the connecting rod 59 to move, thereby driving the sliding tube 561 to move up and down. Since the safety rope passes through the limit frame 562, the up and down movement of the sliding tube 561 changes the tension of the safety rope, and the tension borne by the safety rope is adjusted in real time, simulating the dynamic change of the rope force caused by factors such as personnel movement in the actual rescue scenario.

[0053] In an embodiment of the present application, as Figures 1 - 8 shown, the vibration mechanism 57 may include a rotating shaft 571 and a cam 572.

[0054] Among them, the rotating shaft 571 is rotatably arranged on the limit frame 562, and the rotating shaft 571 is located below the movable frame 563. The cam 572 is sleeved on the rotating shaft 571, and the outer peripheral surface of the cam 572 is in contact connection with the bottom of the movable frame 563.

[0055] In an embodiment of the present application, the linkage mechanism 58 may include a first synchronous belt 581, a second synchronous belt 582, a transmission rod 583, a connecting seat 584, and a tension pulley 585.

[0056] Among them, the transmission rod 583 is rotatably arranged on the fixed frame 55. The first synchronous belt 581 is arranged on the transmission rod 583 and the driving rod 512 through pulley transmission. One end of the transmission rod 583 extends into the sliding tube 561, and movable grooves adapted to the transmission rod 583 are respectively formed on both sides of the sliding tube 561. The second synchronous belt 582 is arranged on the rotating shaft 571 and the transmission rod 583 through pulley transmission. The connecting seat 584 is located in the sliding tube 561. Both sides of the connecting seat 584 penetrate through the movable grooves and are slidably connected to the front and back of the mounting frame 54. The tension pulley 585 is rotatably arranged on the connecting seat 584, and the outer peripheral surface of the tension pulley 585 is in rolling connection with the second synchronous belt 582. The back surface of the inner wall of the sliding tube 561 is provided with an inclined surface, which is in contact with the connecting seat 584, and the top of the inclined surface is inclined towards the direction close to the connecting seat 584.

[0057] Specifically, under the action of the linkage mechanism 58, when the drive motor 511 of the drive mechanism 51 rotates, the transmission rod 583 is driven to rotate synchronously through the first synchronous belt 581. The transmission rod 583 drives the rotating shaft 571 to rotate through the second synchronous belt 582. When the rotating shaft 571 rotates, the cam 572 thereon rotates accordingly. The cam 572 has a special contour curve. When the cam 572 rotates, its outer peripheral surface abuts against the bottom of the movable frame 563. According to the motion principle of the cam mechanism, as the cam 572 rotates, the contour curve of the cam 572 pushes the movable frame 563 to perform reciprocating up and down motion. The movable frame 563 contacts the safety rope through the rotating roller 564, thereby transmitting this reciprocating up and down motion to the safety rope, causing the safety rope to vibrate and simulating the vibration of the safety rope itself under harsh weather conditions such as strong winds.

[0058] Among them, when the driving rod 512 of the drive mechanism 51 rotates, it drives the first synchronous belt 581 to move through a pulley. The first synchronous belt 581 then drives the transmission rod 583 to rotate. One end of the transmission rod 583 extends into the sliding tube 561, and movable grooves adapted to the transmission rod 583 are formed on both sides of the sliding tube 561, enabling the transmission rod 583 to axially move in the sliding tube 561 while rotating. The transmission rod 583 drives the second synchronous belt 582 to move through a pulley, and the second synchronous belt 582 drives the rotating shaft 571 to rotate, realizing the drive of the vibration mechanism 57. The connecting seat 584 is located in the sliding tube 561. Both sides of it penetrate through the movable grooves and are slidably connected to the front and back of the mounting frame 54. The tension pulley 585 is rotatably arranged on the connecting seat 584. The inclined surface on the back of the inner wall of the sliding tube 561 abuts against the connecting seat 584. When the sliding tube 561 moves up and down, the inclined surface pushes the connecting seat 584 to move back and forth, thereby adjusting the position of the tension pulley 585 and realizing the tension adjustment of the second synchronous belt 582, ensuring the stability and reliability of power transmission, and ensuring that the eccentric distance dynamic adjustment mechanism 53 and the vibration mechanism 57 can be stably driven by the drive mechanism 51.

[0059] Specifically, when testing the abrasion resistance of the safety rope, relevant personnel first select a suitable counterweight 401 according to the specifications of the safety rope to be tested as required, and install it on the counterweight frame 402. The counterweight mechanism 4 provides an initial tension for the safety rope. One end of the safety rope is fixed on the sliding plate 102 through the positioning mechanism 6, and the other end bypasses the guide wheel 7 and is fixed on the counterweight frame 402 through the positioning mechanism 6, so that the safety rope is in a taut state.

[0060] Simulating dynamic force: Turn on the drive motor 511. The drive motor 511 drives the drive rod 512 to rotate, and the drive rod 512 then drives the rotating plate 52 to rotate. When it is necessary to simulate the change in the rope force caused by factors such as the movement of personnel, start the adjustment motor 534. The adjustment motor 534 drives the adjustment screw 533 to rotate. Since the adjustment screw 533 is threadedly connected to the movable block 532, and the movable block 532 slides in the guide groove of the rotating plate 52, the movable block 532 will move in the guide groove, thereby changing the eccentricity of the eccentric plate 531. As the rotating plate 52 rotates, the eccentricity of the eccentric plate 531 continuously changes. The sliding tube 561 in the limit mechanism 56 is driven to move up and down through the connecting rod 59, thereby changing the tension borne by the safety rope, and simulating the dynamic change in the rope force caused by factors such as the movement of personnel in the actual rescue scenario.

[0061] Simulating vibration: When the drive motor 511 rotates, it drives the transmission rod 583 to rotate through the first synchronous belt 581, and the transmission rod 583 drives the rotating shaft 571 to rotate through the second synchronous belt 582. When the rotating shaft 571 rotates, the cam 572 thereon rotates accordingly. Since the outer peripheral surface of the cam 572 is in contact with the bottom of the movable frame 563, the rotation of the cam 572 will cause the movable frame 563 to vibrate up and down, thereby driving the part connected to the movable frame 563 and the entire safety rope to vibrate, simulating the vibration of the safety rope itself in bad weather such as strong winds.

[0062] Simulating friction: Turn on the drive motor 201. The drive motor 201 drives the lead screw 202 to rotate. Since the lead screw 202 is threadedly connected to the sliding plate 102, the sliding plate 102 will reciprocate on the horizontal guide rail 101, so that the safety rope moves reciprocally in the horizontal direction. At the same time, start the vertical electric slide 303 and the cylinder 304. The vertical electric slide 303 can adjust the front and rear positions of the friction block 301, and the cylinder 304 can push the friction block 301 into close contact with the safety rope. During the reciprocating movement of the safety rope, the friction block 301 continuously rubs against the surface of the safety rope, simulating the frictional force received by the safety rope during actual use.

[0063] Detection and evaluation: After a certain period of time or a certain number of friction cycles, stop the operation of each driving mechanism and observe the wear condition of the safety rope surface, including wear depth, wear area, fiber breakage, etc. Combine the dynamic tension changes and vibration conditions of the safety rope during the detection process to comprehensively evaluate the wear resistance of the safety rope.

[0064] In summary, the safety rope wear resistance detection device of the embodiment of the present application can effectively simulate the situation where the tension of the safety rope continuously changes and the rope vibrates during actual use, thereby effectively improving the comprehensiveness and accuracy of the safety rope wear resistance detection index.

[0065] In the description of this specification, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0066] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0067] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present application.

Claims

1. A wear resistance detection device for a safety rope, characterized in that, It includes a test bench, a reciprocating drive mechanism, a friction mechanism, a counterweight mechanism, a dynamic tension adjustment component and two positioning mechanisms. A transverse guide rail is provided on the top of the test bench. The sliding plate is slidable on the transverse guide rail. The reciprocating drive mechanism is installed on the test bench and connected to the sliding plate. The counterweight mechanism is arranged on one side of the test bench and can slide up and down. The two positioning mechanisms are respectively arranged on the sliding plate and the counterweight mechanism. The friction mechanism is installed on the test bench and located between the sliding plate and the counterweight mechanism. The dynamic tension adjustment component is also arranged on the test bench and is between the sliding plate and the counterweight mechanism. It includes a driving rotation mechanism, a rotating plate, an eccentric distance dynamic adjustment mechanism, a mounting frame, a fixing frame, a limiting mechanism, a vibration mechanism and a linkage mechanism. Among them, The mounting frame and the fixing frame are respectively fixed on the test bench. The limiting mechanism is slidably connected to the mounting frame up and down. The rotating plate is rotatably arranged on one side of the fixing frame close to the mounting frame and is driven by the driving rotation mechanism. The eccentric distance dynamic adjustment mechanism is arranged on the rotating plate and is connected to the limiting mechanism through a connecting rod. The vibration mechanism is arranged on the limiting mechanism and is connected to the driving rotation mechanism through the linkage mechanism.

2. The abrasion resistance detection device for the safety rope according to claim 1, characterized in that, The reciprocating drive mechanism includes a driving motor and a lead screw. Among them, The lead screw is rotatably arranged on the test bench through a mounting seat, and the lead screw is arranged parallel to the transverse guide rail. The lead screw penetrates through the sliding plate and is threadedly connected to the sliding plate. The driving motor is arranged on the test bench, and the output shaft of the driving motor is coaxially connected to one end of the lead screw through a coupling.

3. The safety rope abrasion resistance detection device according to claim 1, characterized in that, The counterweight mechanism includes a plurality of counterweight blocks, a counterweight frame and a counterweight guide rail. Among them, The counterweight guide rail is vertically arranged along one side of the test bench. The counterweight frame is slidably connected up and down to the counterweight guide rail through a slider. The plurality of counterweight blocks are respectively detachably installed on the counterweight frame.

4. The safety rope abrasion resistance detection device according to claim 3, characterized in that, It further includes a guide wheel. The guide wheel is rotatably arranged on the top of the test bench through a support frame. One side of the guide wheel extends out of the test bench and is located above the counterweight frame.

5. The safety rope abrasion resistance detection device according to claim 1, characterized in that, The friction mechanism includes a friction block, a positioning seat, a vertical electric sliding table and a cylinder. Among them, The vertical electric sliding table is arranged on the test bench, and the vertical electric sliding table is arranged perpendicular to the transverse guide rail. The cylinder is arranged on the slider of the vertical electric sliding table, and the cylinder is vertically arranged. The positioning seat is fixedly arranged on the movable end of the cylinder, and the friction block is fixedly arranged on the positioning seat.

6. The abrasion resistance detection device for a safety rope according to claim 1, characterized in that, The driving rotation mechanism includes a driving rotation motor and a driving rod. Among them, The driving rod is rotatably arranged on the fixing frame, and the rotating plate is sleeved on the driving rod. The driving rotation motor is arranged on the test bench, and the output shaft of the driving rotation motor is coaxially connected to one end of the driving rod through a coupling.

7. The abrasion resistance detection device for a safety rope according to claim 6, characterized in that, The eccentric distance dynamic adjustment mechanism includes an eccentric plate, a movable block, an adjustment screw and an adjustment motor. Among them, A guide groove is formed on one side of the rotating plate close to the mounting frame, and the movable block is slidably matched in the guide groove. One side of the eccentric plate is fixedly connected to the movable block. The adjustment screw is rotatably arranged on the rotating plate, and the adjustment screw penetrates through the movable block and is threadedly connected to the movable block. The adjusting motor is arranged on the rotating plate, and the output shaft of the adjusting motor is coaxially connected with one end of the adjusting screw through a coupling.

8. The safety rope abrasion resistance detection device according to claim 7, characterized in that, The limiting mechanism includes a sliding tube, a limiting frame, a movable frame and a rotating roller, wherein, the sliding tube is slidably connected with the mounting frame up and down, and the limiting frame is fixedly arranged on the sliding tube; the movable frame is slidably arranged in the limiting frame, and the rotating roller is rotatably arranged on the movable frame; a ring groove is formed on one side of the eccentric plate close to the limiting frame, one end of the connecting rod is fixedly connected with the sliding tube, and the other end of the connecting rod extends into the ring groove and is slidably matched with the ring groove.

9. The safety rope abrasion resistance detection device according to claim 8, characterized in that, The vibration mechanism includes a rotating shaft and a cam, wherein, the rotating shaft is rotatably arranged on the limiting frame, and the rotating shaft is located below the movable frame; the cam is sleeved on the rotating shaft, and the outer peripheral surface of the cam is in contact connection with the bottom of the movable frame.

10. The safety rope abrasion resistance detection device according to claim 9, characterized in that, The linkage mechanism includes a first synchronous belt, a second synchronous belt, a transmission rod, a connecting seat and a tension pulley, wherein, the transmission rod is rotatably arranged on the fixed frame, and the first synchronous belt is arranged on the transmission rod and the driving rod through pulley transmission; one end of the transmission rod extends into the sliding tube, and movable grooves adapted to the transmission rod are respectively formed on both sides of the sliding tube; the second synchronous belt is arranged on the rotating shaft and the transmission rod through pulley transmission; the connecting seat is located in the sliding tube, both sides of the connecting seat penetrate through the movable grooves respectively and are slidably connected with the mounting frame back and forth; the tension pulley is rotatably arranged on the connecting seat, and the outer peripheral surface of the tension pulley is in rolling connection with the second synchronous belt; a slope is arranged on the back of the inner wall of the sliding tube, the slope is in contact connection with the connecting seat, and the top of the slope is inclined towards the direction close to the connecting seat.

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