Device and method for detecting tensile strength of steel wire rope of elevator

Abstract

The invention relates to the technical field of steel wire rope detection, and discloses an elevator steel wire rope tensile strength detection device and method.The elevator steel wire rope tensile strength detection device comprises a machine base, a detection frame arranged on the machine base, a control case and a lifting assembly arranged on the detection frame; the lifting assembly comprises a lifting seat, and clamping assemblies for clamping and fixing the steel wire rope are arranged on the upper side of the lifting seat and the detection frame. According to the elevator steel wire rope tensile strength detection device, through the cooperation between the protection assembly and the buffer assembly, damping liquid in the buffer part is extruded by the buffer plate and flows through the through holes, the viscous resistance of the damping liquid is used for attenuating the kinetic energy of a moving machine, and the effect of buffering force unloading is achieved; the flow rate of the damping liquid can be further slowed down through the retention hole in the through hole, the buffering and damping effect is enhanced, the counter-acting force generated when the steel wire rope is broken can be effectively attenuated through the arrangement, and the mechanical structure of the detection equipment is protected against damage.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of steel wire rope detection, and particularly relates to an elevator steel wire rope tensile strength detection device and method. BACKGROUND

[0002] The elevator steel wire rope is a key component for bearing and transmitting weight in the elevator system, and its performance is directly related to the safety and reliability of the elevator operation. In view of the wide use of elevators in daily life and the heavy task of bearing passengers and goods, it is particularly important to ensure that the steel wire rope has sufficient tensile strength. Therefore, in the production process, the tensile strength detection of the elevator steel wire rope is a key link to ensure the safety performance of the elevator.

[0003] At present, although the existing elevator steel wire rope tensile strength detection device meets the detection requirements to a certain extent, there are still many problems and deficiencies in the actual operation process. In particular, during the detection process, when the steel wire rope is broken due to the inability to withstand the preset tension, a huge reaction force will be released instantaneously. This reaction force not only may cause direct impact on the mechanical structure of the detection equipment, leading to equipment damage or performance degradation, and even may cause safety accidents, posing a safety hazard to the detection personnel and increasing the operation risk. Moreover, the existing detection device lacks effective protection measures against the impact of the steel wire rope breaking, so that the safety and stability of the detection process are difficult to be fully guaranteed. Therefore, there are deficiencies, and it cannot meet the use requirements of the detection personnel. Therefore, it is necessary to further improve.

[0004] Therefore, in view of the above, the existing structure and deficiencies are studied and improved, and the elevator steel wire rope tensile strength detection device and method are provided, so as to achieve the purpose of being more practical. SUMMARY

[0005] In order to solve the above technical problems, the elevator steel wire rope tensile strength detection device and method are provided by the following specific technical means: The elevator steel wire rope tensile strength detection device comprises a machine base, a detection frame arranged on the machine base, a control box, and a lifting assembly arranged on the detection frame. The lifting assembly comprises a lifting seat, and a clamping assembly for clamping and fixing the steel wire rope is arranged on the upper side of the lifting seat and the detection frame. The opposite sides of the two clamping assemblies are provided with protection assemblies for unloading protection of the steel wire rope breaking. The protection assembly includes a protection sleeve rod with an inner chamber, one side of the protection sleeve rod is fixedly connected with a protection plate through an elastic corrugated rubber ring, and the other side of the protection plate is fixedly connected with a clamping assembly, the inside of the protection sleeve rod is provided with a buffer assembly, a damping assembly and a force relief assembly for relieving the force of the steel wire rope breakage, and the damping assembly drives the force relief assembly to further relieve the force of the steel wire rope breakage while the buffer assembly relieves the force.

[0006] As a further description of the above technical solution: through the cooperation between the protection assembly and the buffer assembly, the damping liquid in the buffer part is extruded by the buffer plate and flows through the through hole, the kinetic energy of the motion machine is attenuated by the viscous resistance of the damping liquid, the effect of buffer relief is achieved, at the same time, the flow rate of the damping liquid can be further slowed down through the retention hole in the through hole, the buffer damping effect is enhanced, and the counterforce generated when the steel wire rope breaks can be effectively attenuated, and the mechanical structure of the detection equipment is protected from damage.

[0007] Further, the lifting assembly further includes a spiral screw rod, and a spiral sleeve is threadedly combined with the outer periphery of the spiral screw rod, and the spiral sleeve is fixedly assembled on the lifting seat. The inside of the machine base is provided with a driving mechanism, and the lower end of the spiral screw rod is fixedly assembled with the driving mechanism, the spiral screw rod is driven by the driving mechanism, the lifting seat can move up and down, and the tension of the steel wire rope can be detected. The lifting assembly further includes a reinforcing sliding rod fixedly assembled in the detection frame, and a reinforcing clamping block is fixedly assembled on the outer side of the lifting seat, and one side of the reinforcing clamping block is in contact with the outer wall of the reinforcing sliding rod.

[0008] As a further description of the above technical solution: the spiral screw rod is driven to rotate by the driving mechanism, the spiral screw rod is threadedly combined with the spiral sleeve, and the lifting seat and the clamping assembly are driven to move downward synchronously, and the tension of the steel wire rope is tested.

[0009] Further, the clamping assembly includes a clamping seat, one side of the clamping seat is fixedly assembled with a driving motor, the inside of the clamping seat is provided with a driving gear and a movable gear disc, and the driving gear is connected with the movable gear disc through meshing, the output end of the driving motor extends into the inside of the clamping seat and is fixedly connected with the driving gear, three clamping blocks uniformly distributed are slidingly installed on the clamping seat, one side of the clamping block is connected with the movable gear disc through meshing, the driving motor drives the driving gear and the movable gear disc to mesh and transmit, and the three clamping blocks are synchronously moved to each other and clamp and fix the steel wire rope.

[0010] As a further description of the above technical solution: the output end of the driving motor drives the driving gear to rotate, the driving gear drives the movable turntable and the clamping blocks through meshing transmission, so that the clamping blocks approach each other and tightly contact the outer wall of the steel wire rope, and appropriate pressure is applied to the steel wire mesh, so that the clamping and fixing of the steel wire rope are realized.

[0011] Further, the protection assembly further comprises a supporting spring fixedly assembled between the protection sleeve rod and the protection plate, and a damping rubber ring fixedly assembled on the inner wall of the protection sleeve rod.

[0012] As a further description of the above technical solution: by setting the damping rubber ring as a rubber material, the damping effect on the buffer rod can be effectively enhanced, and the setting of the supporting spring is beneficial to the resetting of the protection plate.

[0013] Further, the buffer assembly comprises a buffer part movably assembled in the inner chamber of the protection sleeve rod, one side of the buffer part is fixedly installed with a buffer rod, the other end of the buffer rod is fixedly connected with the protection plate, and the end of the buffer part away from the buffer rod is fixedly installed with a buffer block. The buffer assembly further comprises a first magnet block fixedly assembled on the inner chamber wall of the protection sleeve rod, and a second magnet block fixedly assembled on the buffer block, the opposite sides of the first magnet block and the second magnet block are set as the same magnetism, and the first magnet block and the second magnet block have repelling magnetic field force therebetween.

[0014] As a further description of the above technical solution: based on the opposite sides of the first magnet block and the second magnet block being the same magnetism, repelling magnetic field force is generated therebetween, so that additional buffer damping effect can be generated on the buffer block.

[0015] Further, the buffer assembly further comprises a fixing rod fixedly assembled on the inner chamber wall of the protection sleeve rod, the inside of the buffer part is provided with a buffer plate, the inside of the buffer part is provided with damping liquid, one end of the fixing rod penetrates through the buffer block and extends to the inside of the buffer part and is fixedly connected with the buffer plate, a plurality of through holes for the flow of the damping liquid are formed on the buffer plate, and a retention hole is formed in the through hole, and the inner diameter of the retention hole is larger than that of the through hole.

[0016] As a further description of the above technical solution: the damping liquid in the buffer part is extruded by the buffer plate and flows through the through hole, the viscous resistance of the damping liquid is used to attenuate the kinetic energy of the moving machine, so that the effect of buffer unloading is achieved, and the counterforce of the damping liquid on the buffer plate is used to buffer and unload the impact force of the buffer rod and the steel wire rope, so that the purpose of buffer damping is achieved.

[0017] Further, the damping assembly comprises a damping bag arranged in the inner wall cavity of the protective sleeve rod, and a damping rod movably assembled on the inner wall of the protective sleeve rod, one end of the damping rod extending into the inner wall cavity of the protective sleeve rod and fixedly connected with a pressing piece, the other end of the damping rod fixedly connected with a damping piece, and a damping spring arranged on the outer periphery of the damping rod and located between the inner wall of the protective sleeve rod and the damping piece. The outer side of the buffer block is provided with a plurality of grooves matched with the damping piece.

[0018] As a further description of the above technical solution: under the guidance of the outer wall of the buffer block, the damping rod drives the pressing piece to extrude the damping bag, and the extrusion of the pressing piece on the damping bag not only attenuates the kinetic energy of the buffer block during movement by utilizing the resistance of the damping bag.

[0019] Further, the force relief assembly comprises a force relief shell arranged in the inner wall cavity of the protective sleeve rod, the inner part of the force relief shell is provided with a force relief bag, and the elastic force relief piece is movably installed on the wall of the force relief shell, one side of the elastic force relief piece is in contact with the force relief bag, and the other side of the elastic force relief piece is in contact with the damping rubber ring. A connecting pipe is fixedly installed on the wall of the force relief shell, and the two ends of the connecting pipe are fixedly connected with the damping bag and the force relief bag respectively.

[0020] As a further description of the above technical solution: through the setting, the elastic force relief piece can be pushed to move and extrude the damping rubber ring, so that the damping rubber ring is more in contact with the outer wall of the buffer rod, and the movement of the buffer rod is realized. Strengthen the damping.

[0021] Further, the detection frame is provided with a detection assembly, the detection assembly comprises a detection base fixedly assembled on the detection frame, a movable connecting rod slidably installed on the detection base, a detection top plate fixedly installed on the upper end of the movable connecting rod, and a detection bottom plate fixedly connected with the lower end of the movable connecting rod through the detection base and the detection frame, a pressure sensor arranged on the upper side of the detection base, and an elastic connecting piece arranged on the detection top plate for resetting the detection top plate.

[0022] As a further description of the above technical solution: the detection top plate extrudes the pressure sensor, so as to obtain the tensile strength value of the steel wire rope, and the value is transmitted to the display screen of the control case through background calculation, which is convenient for observation and recording of the detection personnel.

[0023] The method for detecting the tensile strength of the elevator steel wire rope comprises the following steps: S1: First, accurately place one end of the steel wire rope to be detected at the center position of the clamping seat; S2: By operating the control button on the control box, the clamping assembly is driven to apply appropriate pressure to the steel wire mesh, and the steel wire rope is clamped and fixed; S3: Then, the lifting assembly is driven to move downward by the driving mechanism, and the lifting seat and the clamping assembly are simultaneously moved downward, and the tension of the steel wire rope is started to be tested; S4: The tension value of the steel wire rope can be obtained by the pressure sensor in the detection assembly, and the value is transmitted to the display screen of the control box through the background calculation, so as to facilitate the observation and recording of the detection personnel; S5: After the detection is completed, the clamping assembly is driven to release and remove the detected steel wire mesh by operating the control button on the control box; S6: Then, the lifting assembly is driven to move upward by the driving mechanism, and the lifting seat and the clamping assembly are moved upward to reset; S7: The next steel wire rope to be detected is detected, and the next cycle is continued.

[0024] As described above, due to the adoption of the above technical scheme, the beneficial effects of the present application are: 1: The elevator steel wire rope tensile strength detection device is cooperated between the protection assembly and the buffer assembly, the damping liquid in the buffer part is extruded by the buffer plate and flows through the through hole, the kinetic energy of the motion machine is attenuated by the viscous resistance of the damping liquid, the effect of buffering and unloading force is achieved, at the same time, the flow rate of the damping liquid can be further slowed down through the retention hole in the through hole, the buffering damping effect is enhanced, and the counterforce generated when the steel wire rope breaks can be effectively attenuated, and the mechanical structure of the detection equipment is protected from damage.

[0025] 2: The elevator steel wire rope tensile strength detection device is cooperated between the buffer assembly and the damping assembly, the damping member contacts the maximum outer diameter of the buffer block, and is pushed by the damping rod under the guidance of the outer wall of the buffer block, and the extrusion member extrudes the damping capsule, the kinetic energy of the buffer block moving is attenuated by the resistance of the damping capsule, so that the buffering and damping effect of the equipment is further enhanced, and the safety performance of the equipment is improved.

[0026] 3: The elevator steel wire rope tensile strength detection device is cooperated between the buffer assembly, the damping assembly and the unloading assembly, the gas in the damping capsule is transmitted to the unloading capsule by the damping assembly, the unloading capsule is expanded and enlarged, and the expanded and enlarged unloading capsule pushes the elastic unloading member to move, extrudes the damping rubber ring, and the damping rubber ring is more fitted with the outer wall of the buffer rod, so as to strengthen the damping of the movement of the buffer rod, and the further damping and unloading of the buffer rod can be realized by the setting, and the direct impact of the released counterforce on the detection equipment when the steel wire rope breaks is effectively avoided.

[0027] 4、The elevator steel wire rope tensile strength detection device through the synergies between the drive mechanism, lifting assembly and clamping assembly, make the clamping block close to each other and close contact with the outer wall of the steel wire rope, at the same time, the proper pressure is applied to the steel wire net, realize the clamping and fixing of the steel wire rope, and the clamping assembly not only ensures the stable clamping of the steel wire rope, but also realizes the center positioning in the detection process, greatly improves the accuracy and stability of the detection, at the same time, the gradually increasing tension is applied to the steel wire rope through the drive mechanism, the tensile strength of the steel wire rope can be accurately measured, which provides strong guarantee for the safe operation of the elevator. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0029] Figure 1 The overall three-dimensional structure schematic diagram provided by the embodiment of the present application is shown; Figure 2 The mounting structure schematic diagram of the base and the drive mechanism provided by the embodiment of the present application is shown; Figure 3 The mounting structure schematic diagram of the detection frame and the detection assembly provided by the embodiment of the present application is shown; Figure 4 The lifting assembly structure schematic diagram provided by the embodiment of the present application is shown; Figure 5 The mounting structure schematic diagram of the detection assembly and the protection assembly provided by the embodiment of the present application is shown; Figure 6 The detection assembly structure schematic diagram provided by the embodiment of the present application is shown; Figure 7 The mounting structure schematic diagram of the clamping assembly and the protection assembly provided by the embodiment of the present application is shown; Figure 8 The clamping assembly local structure schematic diagram provided by the embodiment of the present application is shown Figure 1 ; Figure 9 The clamping assembly local structure schematic diagram provided by the embodiment of the present application is shown Figure 2 ; Figure 10 The protection assembly internal structure schematic diagram provided by the embodiment of the present application is shown; Figure 11 The protection assembly local structure schematic diagram provided by the embodiment of the present application is shown; Figure 12A part of the enlarged schematic view of the embodiment of the present application is shown. Figure 11 A part of the enlarged schematic view of the embodiment of the present application is shown. Figure 13 A part of the enlarged schematic view of the embodiment of the present application is shown. Figure 14 A part of the enlarged schematic view of the embodiment of the present application is shown. Figure 13 A part of the enlarged schematic view of the embodiment of the present application is shown. Figure 15 A part of the enlarged schematic view of the embodiment of the present application is shown.

[0030] Legend: 10, base; 11, detection frame; 12, control cabinet; 20, driving mechanism; 30, lifting assembly; 31, screw rod; 32, lifting seat; 33, screw sleeve; 34, reinforcing slide rod; 35, reinforcing clamping block; 40, clamping assembly; 41, clamping seat; 42, driving motor; 43, driving gear; 44, movable toothed disc; 45, clamping block; 50, protection assembly; 51, protection sleeve rod; 52, elastic corrugated rubber ring; 53, protection plate; 54, supporting spring; 55, damping rubber ring; 60, buffer assembly; 61, buffer part; 62, buffer rod; 63, buffer block; 64, fixing rod; 65, buffer plate; 651, through hole; 652, retention hole; 66, first magnet block; 67, second magnet block; 70, damping assembly; 71, damping bag; 72, damping rod; 73, damping piece; 74, extrusion piece; 75, damping spring; 80, unloading assembly; 81, unloading shell; 82, unloading bag; 83, connecting pipe; 84, elastic unloading piece; 90, detection assembly; 91, detection base; 92, movable connecting rod; 93, detection top plate; 94, detection bottom plate; 95, pressure sensor; 96, elastic connecting piece. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0032] Please refer to Figures 1 to 15The utility model provides an elevator steel wire rope tensile strength detection device, including frame 10, set up detection frame 11 and control machine box 12 on frame 10, still including setting up and lifting assembly 30 on detection frame 11, lifting assembly 30 includes lifting seat 32, and the upper side of lifting seat 32 and detection frame 11 all are provided with the clamping assembly 40 of fixed clamping to steel wire rope, and the opposite side of two clamping assemblies 40 all is provided with the protection assembly 50 for the force relief protection of steel wire rope fracture, protection assembly 50 includes the protection sleeve rod 51 of opening inner chamber, and protection sleeve rod 51 one side is fixedly connected with the protection plate 53 through the elastic corrugated rubber ring 52, and protection plate 53 other side is fixedly connected with clamping assembly 40, and the inside of protection sleeve rod 51 is provided with the buffer assembly 60, damping assembly 70 and relief assembly 80 for the force relief protection of steel wire rope fracture, through the relief of buffer assembly 60, simultaneously, can make damping assembly 70 drive relief assembly 80 and further force relief protection to the force of steel wire rope fracture, through the cooperation between protection assembly 50 and buffer assembly 60, through the damping liquid in buffer part 61 is extruded by buffer plate 65 and flows through the through -hole 651, utilizes the viscous resistance attenuation motion mechanical energy of damping liquid, reaches the effect of relief buffer, simultaneously, through the retention hole 652 in the through -hole 651 can further slow down the flow rate of damping liquid, enhances the buffer damping effect, and through the setting can effectively attenuate the reaction force generated when steel wire rope fractures, protects the mechanical structure of detection equipment from being damaged.

[0033] Please refer to Figures 2 to 7 Lifting assembly 30 still includes helical screw rod 31, and helical screw rod 31 is screw combined with helical sleeve 33, and helical sleeve 33 is fixedly assembled on lifting seat 32, and the inside of frame 10 is provided with driving mechanism 20, and the lower end of helical screw rod 31 is fixedly assembled with driving mechanism 20, and driving mechanism 20 is driven to helical screw rod 31, can make lifting seat 32 move up and down and carry out tension detection to steel wire rope, lifting assembly 30 still includes reinforcing slide rod 34 fixedly assembled in detection frame 11, and reinforcing clamp block 35 is fixedly assembled on the outside of lifting seat 32, and reinforcing clamp block 35 one side is in contact with the outer wall of reinforcing slide rod 34, and driving mechanism 20 is driven to helical screw rod 31 and rotates, promotes helical screw rod 31 and helical sleeve 33 and carries out screw combination, further drives lifting seat 32 and clamping assembly 40 and moves down synchronously, starts the tension test of steel wire rope.

[0034] Please refer to Figures 7 to 9The clamping assembly 40 comprises a clamping base 41, one side of the clamping base 41 is fixedly provided with a driving motor 42, the inside of the clamping base 41 is provided with a driving gear 43 and a movable gear disc 44, and the driving gear 43 is connected with the movable gear disc 44 through meshing, the output end of the driving motor 42 extends to the inside of the clamping base 41 and is fixedly connected with the driving gear 43, three clamping blocks 45 which are uniformly distributed are slidingly installed on the clamping base 41, one side of the clamping blocks 45 is connected with the movable gear disc 44 through meshing, the driving motor 42 drives the driving gear 43 and the movable gear disc 44 to meshingly drive, so that the three clamping blocks 45 are synchronously moved towards each other and the steel wire rope is clamped and fixed; the output end of the driving motor 42 drives the driving gear 43 to rotate, the driving gear 43 drives the movable gear disc and the clamping blocks 45 to meshingly drive through meshing transmission, so that the clamping blocks 45 move towards each other and tightly contact the outer wall of the steel wire rope, and at the same time, appropriate pressure is applied to the steel wire mesh, so that the steel wire rope is clamped and fixed.

[0035] Please refer to Figures 10 to 11 , Figure 15 The protection assembly 50 further comprises a supporting spring 54 fixedly arranged between the protection sleeve rod 51 and the protection plate 53, and a damping rubber ring 55 fixedly arranged on the inner wall of the protection sleeve rod 51; the damping rubber ring 55 is made of rubber material, which can effectively enhance the damping effect on the buffer rod 62, and the supporting spring 54 is beneficial to the resetting of the protection plate 53.

[0036] Please refer to Figures 11 to 13 The buffer assembly 60 comprises a buffer part 61 movably arranged in the inner chamber of the protection sleeve rod 51, one side of the buffer part 61 is fixedly provided with a buffer rod 62, the other end of the buffer rod 62 is fixedly connected with the protection plate 53, and one end of the buffer part 61 away from the buffer rod 62 is fixedly provided with a buffer block 63; the buffer assembly 60 further comprises a first magnet block 66 fixedly arranged on the inner chamber wall of the protection sleeve rod 51, and a second magnet block 67 fixedly arranged on the buffer block 63, the opposite surfaces of the first magnet block 66 and the second magnet block 67 are provided with the same magnetism, and the first magnet block 66 and the second magnet block 67 have repulsive magnetic field force; based on the same magnetism of the opposite surfaces of the first magnet block 66 and the second magnet block 67, repulsive magnetic field force is generated between them, so that additional buffer damping effect is generated on the buffer block 63.

[0037] Please refer to Figures 13 to 14, the buffer assembly 60 further comprises a fixed rod 64 fixedly assembled on the inner wall of the sheath rod 51, the buffer portion 61 is internally provided with a buffer plate 65, the buffer portion 61 is internally provided with damping liquid, one end of the fixed rod 64 penetrates through the buffer block 63 and extends to the inside of the buffer portion 61 and is fixedly connected with the buffer plate 65, a plurality of through holes 651 for the flow of damping liquid are formed on the buffer plate 65, and a retention hole 652 is formed in each through hole 651, and the inner diameter of the retention hole 652 is greater than that of the through hole 651; the damping liquid in the buffer portion 61 is extruded by the buffer plate 65 and flows through the through holes 651, the kinetic energy of the moving machine is attenuated by the viscous resistance of the damping liquid, the effect of buffering and unloading force is achieved, at the same time, the flow rate of the damping liquid is further slowed down through the retention hole 652 in the through hole 651, the buffering and damping effect is enhanced, and the impact force of the damping liquid on the buffer plate 65 is used to realize the buffering and unloading of the impact force of the buffer rod 62 and the steel wire rope.

[0038] Please refer to Figures 11 to 12 , the damping assembly 70 comprises a damping bag 71 arranged in the inner wall cavity of the sheath rod 51 and a damping rod 72 movably assembled on the inner wall of the sheath rod 51, one end of the damping rod 72 extending into the inner wall cavity of the sheath rod 51 and being fixedly connected with an extrusion piece 74, the other end of the damping rod 72 being fixedly connected with a damping piece 73, a damping spring 75 being arranged around the outer periphery of the damping rod 72, and the damping spring 75 being located between the inner wall of the sheath rod 51 and the damping piece 73; a plurality of grooves matched with the damping piece 73 are formed on the outer side of the buffer block 63; as the buffer block 63 moves, the damping piece 73 will contact the position with the maximum outer diameter of the buffer block 63, so that the damping rod 72 is pushed to drive the extrusion piece 74 to extrude the damping bag 71 under the guidance of the outer wall of the buffer block 63, and the extrusion of the damping bag 71 by the extrusion piece 74 not only attenuates the kinetic energy of the buffer block 63 during movement by the resistance of the damping bag 71.

[0039] Please refer to Figures 10 to 15 , the unloading assembly 80 comprises an unloading shell 81 arranged in the inner wall cavity of the sheath rod 51, an unloading bag 82 arranged in the unloading shell 81, an elastic unloading piece 84 movably arranged on the wall of the unloading shell 81, one side of the elastic unloading piece 84 being in contact with the unloading bag 82, and the other side of the elastic unloading piece 84 being in contact with the damping rubber ring 55; the wall of the unloading shell 81 is fixedly provided with a connecting pipe 83, and the two ends of the connecting pipe 83 are fixedly connected with the damping bag 71 and the unloading bag 82 respectively; the gas in the damping bag 71 is transmitted to the unloading bag 82, so that the unloading bag 82 is expanded and enlarged, the expanded and enlarged unloading bag 82 pushes the elastic unloading piece 84 to move, the elastic unloading piece 84 extrudes the damping rubber ring 55, the damping rubber ring 55 is more closely attached to the outer wall of the buffer rod 62, and the movement of the buffer rod 62 is strengthened.

[0040] Please refer toFigures 3 to 6 The detection frame 11 is provided with a detection assembly 90, the detection assembly 90 comprises a detection base 91 fixedly assembled on the detection frame 11, a movable connecting rod 92 is slidingly installed on the detection base 91, a detection top plate 93 is fixedly installed on the upper end of the movable connecting rod 92, a detection bottom plate 94 is fixedly connected to the lower end of the movable connecting rod 92 through the detection base 91 and the detection frame 11, a pressure sensor 95 is arranged on the upper side of the detection base 91, and an elastic connecting piece 96 for resetting the detection top plate 93 is arranged on the detection top plate 93; the detection bottom plate 94 pulls the detection top plate 93 to be pressed down synchronously through the movable connecting rod 92, and the detection top plate 93 is used for extruding the pressure sensor 95, so that the tension value of the steel wire rope is obtained.

[0041] The elevator steel wire rope tensile strength detection method comprises the following steps: S1: first, one end of the steel wire rope to be detected is accurately placed at the center position of the clamping seat 41; S2: then, the control button on the control box 12 is controlled to drive the clamping assembly 40 to apply appropriate pressure to the steel wire mesh, so that the steel wire rope is clamped and fixed; S3: then, the lifting assembly 30 is driven to move downward by the driving mechanism 20, so that the lifting seat 32 and the clamping assembly 40 are synchronously moved downward, and the tension of the steel wire rope is tested; S4: the tension value of the steel wire rope can be obtained by using the pressure sensor 95 in the detection assembly 90, and the value is transmitted to the display screen of the control box 12 through the background calculation, so as to facilitate the observation and recording of the detection personnel; S5: after the detection is completed, the control button on the control box 12 is controlled to drive the clamping assembly 40 to release the detected steel wire mesh and remove it; S6: then, the lifting assembly 30 is driven to move upward by the driving mechanism 20, so that the lifting seat 32 and the clamping assembly 40 are moved upward and reset; S7: the next steel wire rope to be detected is detected, and the next cycle is continued.

[0042] The specific use mode and effect of the embodiment are as follows: Working principle: in use, first, the steel wire to be detected is accurately placed in the center of the clamping seat 41, then the preset program is started by operating the control button on the control box 12, which in turn controls the operation of the drive motor 42, the output end of the drive motor 42 drives the driving gear 43 to rotate, the driving gear 43 drives the movable turntable and clamping block 45 through meshing transmission, so that the clamping block 45 approaches each other and tightly contacts the outer wall of the steel wire, at the same time, the steel wire is clamped and fixed, then the other end of the steel wire is clamped and positioned in the same way, ensuring that the steel wire remains vertical, and through this setting, not only the center positioning of the steel wire is ensured, but also the stability and accuracy of the steel wire in the detection process are greatly improved; When the steel wire is firmly positioned, the drive mechanism 20 is started by program control, the screw rod 31 is driven to rotate by the drive mechanism 20, the screw rod 31 is screwed with the screw sleeve 33, and the lifting seat 32 and the clamping assembly 40 are driven to move downward synchronously, starting to test the tension of the steel wire; With the continuous downward movement of the lifting seat 32, the steel wire is subjected to gradually increasing tension, and the detection assembly 90 above the steel wire is driven to work, the detection bottom plate 94 pulls the detection top plate 93 downward synchronously through the movable connecting rod 92, the detection top plate 93 extrudes the pressure sensor 95, so as to obtain the tension value of the steel wire, and the value is transmitted to the display screen of the control box 12 through background calculation, which is convenient for detection personnel to observe and record; In the process of increasing tension, when the critical point of tensile strength of the steel wire is reached, the steel wire will break, and the strong reaction force generated when the steel wire breaks will impact the clamping assembly 40, at this time, the protective plate 53 is extruded, driving the buffer rod 62 to move to the inside of the protective sleeve rod 51, the movement of the buffer rod 62 drives the buffer part 61 to move in the protective sleeve rod 51, the damping liquid in the buffer part 61 is extruded by the buffer plate 65 and flows through the through hole 651, the viscous resistance of the damping liquid is used to attenuate the kinetic energy of the motion machine, so as to achieve the effect of buffering and unloading force, at the same time, the retention hole 652 in the through hole 651 can further slow down the flow rate of the damping liquid, enhance the buffering damping effect, and through the setting, the damping liquid is used to realize the buffering and unloading force of the buffer rod 62 and the impact force of the steel wire, so as to achieve the purpose of buffering and damping; In addition, the movement of the buffer rod 62 also drives the buffer block 63 and the second magnet block 67 to move synchronously, since the opposite sides of the first magnet block 66 and the second magnet block 67 have the same magnetism, repulsive magnetic field force is generated between them, thereby generating an additional damping effect on the buffer block 63, and the damping member 73 on the damping assembly 70 is in contact with the buffer block 63, and by using the resistance of the damping member 73 and the groove on the buffer block 63, a certain resistance can be generated on the buffer rod 62, thereby further enhancing the damping effect; With the movement of the buffer block 63, the damping member 73 is in contact with the position of the maximum outer diameter of the buffer block 63, thereby pushing the damping rod 72 to drive the extrusion member 74 to extrude the damping capsule 71 under the guidance of the outer wall of the buffer block 63, the extrusion of the extrusion member 74 on the damping capsule 71 not only attenuates the kinetic energy of the buffer block 63 by using the resistance of the damping capsule 71, but also drives the gas in the damping capsule 71 to be transmitted to the force relief capsule 82, so that the force relief capsule 82 is expanded and enlarged, and the expanded and enlarged force relief capsule 82 pushes the elastic force relief member 84 to move, extrudes the damping rubber ring 55, and makes the damping rubber ring 55 more closely fit the outer wall of the buffer rod 62, thereby achieving the purpose of strengthening the damping of the movement of the buffer rod 62, and further improving the damping effect of the device, effectively avoiding the direct impact of the reaction force of the broken steel wire rope on the mechanical structure of the detection device, further improving the safety performance, and effectively protecting the impact force when the steel wire rope is broken.

[0043] The preferred embodiments disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and do not limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present application. The embodiments are selected and described in detail in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. An elevator wire rope tensile strength testing device, comprising a base (10), a testing frame (11) mounted on the base (10), and a control box (12), characterized in that: It also includes a lifting assembly (30) disposed on the detection frame (11); The lifting assembly (30) includes a lifting seat (32). The upper side of the lifting seat (32) and the detection frame (11) are provided with clamping assemblies (40) for clamping and fixing the wire rope. The opposite sides of the two clamping assemblies (40) are provided with protective assemblies (50) for unloading force to protect the wire rope from breakage. The protective assembly (50) includes a protective sleeve rod (51) with an inner cavity. A protective plate (53) is fixedly connected to one side of the protective sleeve rod (51) by an elastic corrugated rubber ring (52), and the other side of the protective plate (53) is fixedly connected to the clamping assembly (40). The interior of the protective sleeve rod (51) is provided with a buffer assembly (60), a damping assembly (70), and a force-dissipating assembly (80) for unloading force to protect against wire rope breakage. While the buffer assembly (60) unloads force, the damping assembly (70) drives the force-dissipating assembly (80) to further unload and protect against the force of wire rope breakage.

2. The elevator wire rope tensile strength testing device according to claim 1, characterized in that: The lifting assembly (30) also includes a screw rod (31), on which a screw sleeve (33) is threaded around its outer circumference, and the screw sleeve (33) is fixedly mounted on the lifting seat (32); The base (10) is equipped with a drive mechanism (20). The lower end of the screw (31) is fixedly assembled with the drive mechanism (20). The screw (31) is driven by the drive mechanism (20), which enables the lifting seat (32) to move up and down and to detect the tension of the wire rope. The lifting assembly (30) also includes a reinforcing slide bar (34) fixedly mounted in the detection frame (11), and a reinforcing block (35) fixedly mounted on the outside of the lifting seat (32), with one side of the reinforcing block (35) in contact with the outer wall of the reinforcing slide bar (34).

3. The elevator wire rope tensile strength testing device according to claim 1, characterized in that: The clamping assembly (40) includes a clamping seat (41). A drive motor (42) is fixedly mounted on one side of the clamping seat (41). The clamping seat (41) is provided with a drive gear (43) and a movable gear disc (44). The drive gear (43) and the movable gear disc (44) are connected by meshing. The output end of the drive motor (42) extends into the interior of the clamping seat (41) and is fixedly connected to the drive gear (43). Three evenly distributed clamping blocks (45) are slidably mounted on the clamping seat (41). One side of the clamping block (45) is connected by meshing with the movable gear disc (44). The drive motor (42) drives the drive gear (43) and the movable gear disc (44) to mesh and transmit power, so that the three clamping blocks (45) can move closer to each other synchronously and clamp and fix the wire rope.

4. The elevator wire rope tensile strength testing device according to claim 1, characterized in that: The protective assembly (50) also includes a support spring (54) fixedly mounted between the protective sleeve rod (51) and the protective plate (53), and a damping rubber ring (55) fixedly mounted on the inner wall of the protective sleeve rod (51).

5. The elevator wire rope tensile strength testing device according to claim 4, characterized in that: The buffer assembly (60) includes a buffer part (61) movably assembled in the inner cavity of the protective sleeve rod (51), a buffer rod (62) is fixedly installed on one side of the buffer part (61), the other end of the buffer rod (62) is fixedly connected to the protective plate (53), and a buffer block (63) is fixedly installed on the end of the buffer part (61) away from the buffer rod (62). The buffer assembly (60) further includes a first magnet block (66) fixedly mounted on the inner wall of the protective sleeve rod (51) and a second magnet block (67) fixedly mounted on the buffer block (63). The opposite sides of the first magnet block (66) and the second magnet block (67) are provided to have the same magnetism, and there is a repulsive magnetic field between the first magnet block (66) and the second magnet block (67).

6. The elevator wire rope tensile strength testing device according to claim 5, characterized in that: The buffer assembly (60) further includes a fixing rod (64) fixedly mounted on the inner wall of the protective sleeve rod (51). The buffer part (61) is provided with a buffer plate (65). The buffer part (61) is provided with damping fluid. One end of the fixing rod (64) passes through the buffer block (63) and extends into the interior of the buffer part (61) and is fixedly connected to the buffer plate (65). The buffer plate (65) is provided with a plurality of through holes (651) for the flow of damping fluid, and a retention hole (652) is provided in the through hole (651). The inner diameter of the retention hole (652) is larger than the inner diameter of the through hole (651).

7. The elevator wire rope tensile strength testing device according to claim 5, characterized in that: The damping assembly (70) includes a damping bladder (71) disposed in the inner wall cavity of the protective sleeve (51) and a damping rod (72) movably mounted on the inner wall of the protective sleeve (51). One end of the damping rod (72) facing the damping bladder (71) extends into the inner wall cavity of the protective sleeve (51) and is fixedly connected to an extruder (74). A damping element (73) is fixedly mounted on the other end of the damping rod (72) away from the extruder (74). A damping spring (75) is sleeved on the outer periphery of the damping rod (72), and the damping spring (75) is located between the inner wall of the protective sleeve (51) and the damping element (73). The buffer block (63) has several grooves on its outer side that match the damping element (73).

8. The elevator wire rope tensile strength testing device according to claim 7, characterized in that: The unloading assembly (80) includes an unloading shell (81) disposed in the inner wall cavity of the protective sleeve rod (51), an unloading bladder (82) disposed inside the unloading shell (81), and an elastic unloading component (84) movably installed on the wall of the unloading shell (81). One side of the elastic unloading component (84) is in contact with the unloading bladder (82), and the other side of the elastic unloading component (84) is in contact with the damping rubber ring (55). A connecting pipe (83) is fixedly installed on the wall of the unloading shell (81), and the two ends of the connecting pipe (83) are fixedly connected to the damping bladder (71) and the unloading bladder (82) respectively.

9. The elevator wire rope tensile strength testing device according to claim 1, characterized in that: The detection frame (11) is provided with a detection component (90), the detection component (90) includes a detection base (91) fixedly assembled on the detection frame (11), a movable connecting rod (92) is slidably installed on the detection base (91), a detection top plate (93) is fixedly installed on the upper end of the movable connecting rod (92), and a detection bottom plate (94) is fixedly connected to the lower end of the movable connecting rod (92) through the detection base (91) and the detection frame (11). A pressure sensor (95) is provided on the upper side of the detection base (91), and an elastic connector (96) for resetting the detection top plate (93) is provided on the detection top plate (93).

10. A method for testing the tensile strength of elevator wire ropes, applied to the elevator wire rope tensile strength testing device according to any one of claims 1-9, characterized in that, Includes the following steps: S1: First, place one end of the wire rope to be tested precisely at the center of the clamp (41); S2: Then, by operating the control button on the control box (12), the clamping assembly (40) is driven to apply appropriate pressure to the wire mesh to achieve clamping and fixing of the wire rope; S3: Then, the lifting assembly (30) is driven to move down by the drive mechanism (20), which in turn drives the lifting seat (32) and the clamping assembly (40) to move down synchronously, and the tension of the wire rope is tested. S4: The tension value of the wire rope can be obtained by using the pressure sensor (95) in the detection component (90), and the value is calculated in the background and then transmitted to the display screen of the control box (12) for easy observation and recording by the inspection personnel; S5: After the test is completed, the clamping assembly (40) is driven to release and remove the tested wire mesh by operating the control button on the control box (12); S6: Then, the lifting assembly (30) is driven to move upward by the drive mechanism (20), thereby driving the lifting seat (32) and the clamping assembly (40) to move upward and reset. S7: Inspect the next wire rope to be tested and continue to the next cycle.

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