A driving rope detection device for an elevator

Abstract

The present invention belongs to the technical field of non-destructive testing of ropes, and specifically discloses a driving rope testing device for an elevator, comprising a vibration transmission detection mechanism, a clamping and fixing mechanism, a tensioning and holding mechanism, and a travel assembly. The clamping and fixing mechanism includes a longitudinal frame, and the longitudinal frame and the rope body are arranged in parallel. The vibration transmission detection mechanism includes a vibration generating assembly and a vibration detecting assembly, and the vibration generating assembly and the vibration detecting assembly are respectively located at the two ends of the longitudinal frame. The tensioning and holding mechanism and the travel assembly are arranged on the longitudinal frame. This scheme utilizes the characteristic that when vibration is transmitted in the form of waves on the rope body, it absorbs energy and causes amplitude attenuation due to factors such as internal friction. The amplitude attenuation is used to determine whether there is local damage in the current measuring section. In addition, the present invention proposes a tensioning and holding mechanism that can maintain the intermediate span unchanged during the tensioning process.

Description

Technical Field

[0001] The invention belongs to the technical field of non-destructive detection of ropes, and in particular relates to a driving rope detection device for an elevator. Background Art

[0002] The drive rope of the elevator is the main tensile unit of the elevator, so it needs to be inspected regularly. This rope may be made of metal or other high-strength materials, but it is basically a structure in which several strands of fine wire are twisted together. This structure can not only ensure the overall tensile strength of the rope, but also make it flexible and easy to reel in. At the same time, due to the large number of fine steel wires, even if a few of them break, the remaining steel wires can still make it have sufficient strength.

[0003] However, regular inspections are still required, and damaged or broken ropes need to be repaired or replaced in a timely manner. Due to the compact spatial layout of the elevator and the high longitudinal height, it is difficult for manual inspection to enter such a small space. On the other hand, long-term high-intensity operations in a small space are difficult and dangerous. Therefore, it is necessary to use small robots to replace manual operations.

[0004] Non-destructive testing in this kind of confined space is generally performed using visual inspection, but vision can generally only identify surface defects of objects. If the fine wires inside are broken, it is generally difficult to detect. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a device for non-destructive testing of driven ropes in a narrow space. This scheme utilizes the characteristic that when vibration is transmitted in the form of waves on the rope body, it will absorb energy and cause amplitude attenuation due to factors such as internal friction. The amplitude of the attenuation is used to determine whether there is local damage in the current measuring section; in order to control variables and ensure the effectiveness of the measurement, the present invention proposes a tensioning maintaining mechanism, which can drive the tensioning gear to rotate and tension the rope body through a cylinder with stable internal pressure. The rolling structure between the clamping wheel and the rope body can maintain the middle span unchanged during the tensioning process.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a driving rope detection device for an elevator, comprising a vibration transmission detection mechanism, a clamping and fixing mechanism, a tensioning and holding mechanism, and a travel assembly. The clamping and fixing mechanism includes a longitudinal frame, which is arranged parallel to the rope body. The vibration transmission detection mechanism includes a vibration generating assembly and a vibration detecting assembly, which are respectively located at two ends of the longitudinal frame. The tensioning and holding mechanism and the travel assembly are arranged on the longitudinal frame.

[0007] Preferably, the vibration detection component includes a sensing module and a sensing bracket, the sensing bracket is fixed to the inside of the longitudinal frame, the sensing module is fixed to the sensing bracket, the sensing module is sleeved on the rope body and in contact with the rope body, and the traveling distance of the traveling component each time is less than the distance between the vibration generating component and the vibration detection component, thereby avoiding the occurrence of a detection blind spot.

[0008] This solution can detect the integrity of the rope within the span by measuring the amplitude attenuation during vibration transmission. This detection method is highly efficient and accurate, and will not cause damage to the rope being tested.

[0009] Furthermore, the sensing module includes an airbag and a pressure sensor, and the pressure sensor is located inside the airbag.

[0010] The sensing module can use airbag-converted pressure sensing, or directly place the vibration sensor against the rope body to achieve higher-precision measurement. Engineers can make their own choices regarding the trade-off between cost and accuracy.

[0011] Preferably, the vibration generating assembly includes a vibration generating motor and a cam, the vibration generating motor is arranged on a longitudinal frame, the cam is arranged on the output shaft of the vibration generating motor, the protrusions of the cam are evenly distributed in a ring shape, and the protrusions of the cam can contact the rope body.

[0012] Through the rotation of the cam, the rope body can be made to vibrate at a specific frequency. In the process of transmitting the vibration from the bottom end to the top end of the vertical frame, the amplitude will be attenuated due to losses such as the internal friction of the rope. If some filaments are broken, the above-mentioned internal friction loss will be reduced, and the degree of amplitude attenuation will be reduced. In this way, it is possible to detect whether the rope is damaged.

[0013] Furthermore, the clamping and fixing mechanism also includes a combined fork frame assembly and a clamping wheel assembly. The combined fork frame assembly is symmetrically arranged at both ends of the longitudinal frame, and the clamping wheel assembly is rotatably arranged in the combined fork frame assembly.

[0014] Preferably, the combined fork frame assembly consists of a fork frame combination seat and a fork frame plate, the fork frame combination seat is provided with a waist hole, and the fork frame plate is provided with a stud, which passes through the waist hole and is fixed by a nut.

[0015] As a further preferred embodiment of the present invention, the clamping wheel assembly includes a clamping shaft, a clamping wheel and a synchronous gear. The clamping shaft is rotatably arranged in the fork frame plate, the clamping wheel is fixedly connected to the clamping shaft, and the groove of the clamping wheel is evenly distributed with anti-slip grooves in an annular shape. The clamping wheel and the rope body are in rolling contact, the synchronous gear is fixedly connected to the clamping shaft, and the two synchronous gears are engaged for transmission.

[0016] Through the rolling contact between the clamping wheel and the rope body, on the one hand, the movement of the entire device along the rope body can be accurately controlled by the traveling component; on the other hand, the rope body within the detection span can be fully and controllably tensioned through the tensioning holding mechanism.

[0017] Furthermore, the tensioning and holding mechanism includes a pneumatic tensioning assembly and a tensioning execution assembly, and the pneumatic tensioning assembly and the tensioning execution assembly are arranged on the longitudinal frame.

[0018] Preferably, the pneumatic tensioning assembly includes a cylinder and an air intake valve, the cylinder is fixed to the longitudinal frame, the air intake valve is arranged at the tail of the cylinder, the air intake valve is provided with a pressure relief valve and an air supply pipe, and the air supply pipe is connected to an external air source.

[0019] The air inlet valve can control the gas entering the cylinder. When the air pressure exceeds the preset value of the pressure relief valve, the pressure relief valve will discharge the excess gas, thereby maintaining the stability of the internal pressure of the cylinder, and thus keeping the tension of the rope body stable and controllable.

[0020] As a further preferred embodiment of the present invention, the tensioning execution assembly includes a rack guide seat, a tensioning rack and a tensioning gear. The rack guide seat is fixed to the longitudinal frame, the tensioning rack is engaged and slidably arranged in the rack guide seat, and one end of the tensioning rack is fixed to the telescopic part of the cylinder.

[0021] As a further preferred embodiment of the present invention, the tensioning gear is sleeved on the clamping shaft at the bottom end of the longitudinal frame, a ratchet assembly is provided between the tensioning gear and the clamping shaft, the tensioning rack and the tensioning gear are engaged for transmission, the traveling assembly includes a traveling motor and a traveling gear, the traveling motor is fixedly connected to the longitudinal frame, the traveling gear is fixedly connected to the output shaft of the traveling motor, and the traveling gear is engaged for transmission with the synchronous gear at the top end of the longitudinal frame.

[0022] The travel distance of the traveling component each time is slightly smaller than the detection span of this device (the distance between the vibration generating component and the vibration detecting component), so that the detection range can cover the entire rope body, avoiding the problem of being unable to detect and identify when the breaking position is just near the outside of the vibration generating component or the vibration detecting component.

[0023] The beneficial effects achieved by the present invention using the above structure are as follows:

[0024] (1) This scheme can detect the integrity of the rope within the span by measuring the amplitude attenuation during the vibration transmission process. This detection method is highly efficient and accurate, and will not cause damage to the rope being tested.

[0025] (2) The sensing module can use the pressure sensing method converted by the airbag, or directly press the vibration sensor against the rope body to achieve higher-precision measurement. The engineers can make their own choices on the trade-off between cost and accuracy.

[0026] (3) The rotation of the cam can make the rope body vibrate at a specific frequency. In the process of transmitting the vibration from the bottom end to the top end of the vertical frame, the amplitude will be attenuated due to losses such as the internal friction of the rope. If some of the filaments are broken, the internal friction loss will be reduced and the degree of amplitude attenuation will be reduced. In this way, it is possible to detect whether the rope is damaged.

[0027] (4) Through the rolling contact between the clamping wheel and the rope body, on the one hand, the movement of the entire device along the rope body can be accurately controlled by the traveling assembly; on the other hand, the rope body within the detection span can be fully and controllably tensioned through the tensioning holding mechanism.

[0028] (5) The air inlet valve can control the gas entering the cylinder. When the air pressure exceeds the preset value of the pressure relief valve, the pressure relief valve will discharge the excess gas, thereby maintaining the stability of the internal pressure of the cylinder, and thus keeping the tension of the rope body stable and controllable.

[0029] (6) The travel distance of the traveling component each time is slightly smaller than the detection span of the device (the distance between the vibration generating component and the vibration detecting component), so that the detection range can cover the entire rope body, avoiding the problem of being unable to detect and identify when the break position is just near the outside of the vibration generating component or the vibration detecting component. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A perspective view of a driving rope detection device for an elevator proposed by the present invention;

[0031] Figure 2 This is a front view of a driving rope detection device for an elevator proposed by the present invention;

[0032] Figure 3 This is a left side view of a driving rope detection device for an elevator proposed by the present invention;

[0033] Figure 4 for Figure 3 A cross-sectional view along the cutting line AA;

[0034] Figure 5 for Figure 4 A cross-sectional view along the cutting line BB;

[0035] Figure 6 for Figure 4 A partial enlarged view of point Ⅰ in the middle;

[0036] Figure 7 for Figure 1 A partial enlarged view of the middle II;

[0037] Figure 8 for Figure 2 A partial enlarged view of point III in the middle;

[0038] Figure 9 It is a structural diagram of the tensioning actuator component;

[0039] Figure 10 Schematic diagram of vibration waveforms at the vibration source and detection position.

[0040] Among them, 1. Vibration transmission detection mechanism, 2. Clamping and fixing mechanism, 3. Tensioning and holding mechanism, 4. Traveling assembly, 5. Rope body, 6. Vibration generating assembly, 7. Vibration detection assembly, 8. Vibration generating motor, 9. Cam, 10. Sensing module, 11. Sensing bracket, 12. Airbag, 13. Pressure sensor, 14. Vertical frame, 15. Combined fork frame assembly, 16. Clamping wheel assembly, 17. Fork frame assembly seat , 18. Fork frame, 19. Clamping shaft, 20. Clamping wheel, 21. Synchronous gear, 22. Waist hole, 23. Stud, 24. Anti-slip groove, 25. Pneumatic tensioning assembly, 26. Tensioning actuator assembly, 27. Cylinder, 28. Inlet valve, 29. Rack guide seat, 30. Tensioning rack, 31. Tensioning gear, 32. Pressure relief valve, 33. Air supply pipe, 34. Travel motor, 35. Travel gear, 36. Ratchet assembly.

[0041] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0044] like Figures 1 to 9 As shown, the present invention provides a driving rope detection device for an elevator, comprising a vibration transmission detection mechanism 1, a clamping and fixing mechanism 2, a tensioning and holding mechanism 3, and a traveling assembly 4. The clamping and fixing mechanism 2 includes a longitudinal frame 14, which is arranged parallel to the rope body 5. The vibration transmission detection mechanism 1 includes a vibration generating assembly 6 and a vibration detecting assembly 7, which are respectively located at two ends of the longitudinal frame 14. The tensioning and holding mechanism 3 and the traveling assembly 4 are arranged on the longitudinal frame 14.

[0045] The vibration detection component 7 includes a sensing module 10 and a sensing bracket 11. The sensing bracket 11 is fixed to the inside of the longitudinal frame 14. The sensing module 10 is fixed to the sensing bracket 11. The sensing module 10 is sleeved on the rope body 5 and in contact with the rope body 5. The traveling distance of the traveling component 4 each time is less than the distance between the vibration generating component 6 and the vibration detection component 7, thereby avoiding the occurrence of a detection blind spot.

[0046] This solution can detect the integrity of the rope within the span by measuring the amplitude attenuation during vibration transmission. This detection method is highly efficient and accurate, and will not cause damage to the rope being tested.

[0047] The sensing module 10 includes an airbag 12 and a pressure sensor 13 . The pressure sensor 13 is located inside the airbag 12 .

[0048] The sensing module 10 can adopt the pressure sensing method converted by the airbag 12, or directly place the vibration sensor against the rope body 5 to achieve higher precision measurement. The engineer can make his own choice on the trade-off between cost and precision.

[0049] The vibration generating assembly 6 includes a vibration generating motor 8 and a cam 9. The vibration generating motor 8 is arranged on the longitudinal frame 14, and the cam 9 is arranged on the output shaft of the vibration generating motor 8. The protrusions of the cam 9 are evenly distributed in a ring shape, and the protrusions of the cam 9 can contact the rope body 5.

[0050] Through the rotation of the cam 9, the rope body 5 can be vibrated at a specific frequency. In the process of transmitting the vibration from the bottom end to the top end of the vertical frame 14, the amplitude will be attenuated due to losses such as the internal friction of the rope. If some of the filaments are broken, the above-mentioned internal friction loss will be reduced, and the degree of amplitude attenuation will be reduced. In this way, it is possible to detect whether the rope is damaged.

[0051] The clamping and fixing mechanism 2 further includes a combined fork frame assembly 15 and a clamping wheel assembly 16 . The combined fork frame assembly 15 is symmetrically arranged at both ends of the longitudinal frame 14 , and the clamping wheel assembly 16 is rotatably arranged in the combined fork frame assembly 15 .

[0052] The combined fork frame assembly 15 is composed of a fork frame combination seat 17 and a fork frame plate 18. The fork frame combination seat 17 is provided with a waist hole 22, and the fork frame plate 18 is provided with a stud 23. The stud 23 passes through the waist hole 22 and is fixed by a nut.

[0053] The clamping wheel assembly 16 includes a clamping shaft 19, a clamping wheel 20 and a synchronous gear 21. The clamping shaft 19 is rotatably arranged in the fork frame 18. The clamping wheel 20 is fixedly connected to the clamping shaft 19. Anti-slip grooves 24 are evenly distributed in an annular shape in the groove of the clamping wheel 20. The clamping wheel 20 and the rope body 5 are in rolling contact. The synchronous gear 21 is fixedly connected to the clamping shaft 19, and the two synchronous gears 21 are engaged for transmission.

[0054] Through the rolling contact between the clamping wheel 20 and the rope body 5, on the one hand, the movement of the entire device along the rope body 5 can be accurately controlled by the traveling component 4; on the other hand, the rope body 5 within the detection span can be fully and controllably tensioned through the tensioning holding mechanism 3.

[0055] The tensioning and holding mechanism 3 includes a pneumatic tensioning assembly 25 and a tensioning actuating assembly 26 , and the pneumatic tensioning assembly 25 and the tensioning actuating assembly 26 are arranged on the longitudinal frame 14 .

[0056] The pneumatic tensioning assembly 25 includes a cylinder 27 and an air intake valve 28. The cylinder 27 is fixed to the longitudinal frame 14. The air intake valve 28 is arranged at the tail of the cylinder 27. The air intake valve 28 is provided with a pressure relief valve 32 and an air supply pipe 33. The air supply pipe 33 is connected to an external air source.

[0057] The air inlet valve 28 can control the gas entering the cylinder 27. When the air pressure exceeds the preset value of the pressure relief valve 32, the pressure relief valve 32 will discharge the excess gas, thereby maintaining the stability of the internal pressure of the cylinder 27, and thus keeping the tension of the rope body 5 stable and controllable.

[0058] The tensioning actuator 26 includes a rack guide seat 29, a tensioning rack 30 and a tensioning gear 31. The rack guide seat 29 is fixed to the longitudinal frame 14. The tensioning rack 30 is engaged and slidably arranged in the rack guide seat 29. One end of the tensioning rack 30 is fixed to the telescopic part of the cylinder 27.

[0059] The tensioning gear 31 is sleeved on the clamping shaft 19 at the bottom end of the longitudinal frame 14. A ratchet assembly 36 is provided between the tensioning gear 31 and the clamping shaft 19. The tensioning rack 30 and the tensioning gear 31 are engaged for transmission. The traveling assembly 4 includes a traveling motor 34 and a traveling gear 35. The traveling motor 34 is fixed to the longitudinal frame 14. The traveling gear 35 is fixed to the output shaft of the traveling motor 34. The traveling gear 35 is engaged for transmission with the synchronous gear 21 at the top of the longitudinal frame 14.

[0060] The travel distance of the traveling component 4 each time is slightly smaller than the detection span of the device (the distance between the vibration generating component 6 and the vibration detecting component 7), so that the detection range can cover the entire rope body 5, avoiding the problem of being unable to detect and identify when the breaking position is just near the outside of the vibration generating component 6 or the vibration detecting component 7.

[0061] like Figure 10 As shown, the horizontal axis represents time, the vertical axis represents the amplitude of the rope body 5, the dot-dashed curve represents the waveform of the input end (the location of the vibration generating component 6), and the solid line curve represents the waveform of the detection end (the location of the vibration detection component 7);

[0062] Part a represents the measured original waveform. Since the transmission of the wave takes time, although the frequencies of the two curves are equal, there will be a time difference between them.

[0063] Part b shows the waveform after coupling processing. The waveform curve at the detection end is shifted horizontally. The difference A between the peaks of the two curves represents the amplitude attenuation of the wave during the transmission process.

[0064] During specific use, the user first needs to release the rope body 5 to be tested into a vertical drooping state. In the natural state, the rope body 5 is pulled by its own gravity and is therefore in a certain degree of tension. At this time, the device is installed on the rope body 5, and the travel component 4 can enable the device to move from bottom to top along the rope body 5.

[0065] When the position needs to be transferred, the travel motor 34 needs to be started first. Through the transmission between the travel gear 35 and the synchronous gear 21, the clamping wheel 20 can be rotated to realize the position movement of the device. Since the rope body 5 itself has a certain degree of straightness, the clamping wheel 20 below will also roll along the rope body 5, and the rope body 5 will not bend; in this travel mode, the ratchet assembly 36 will not transmit rotational motion, so the tensioning holding mechanism 3 remains stationary, and a spring can be set inside the cylinder 27 so that the cylinder 27 can automatically retract in a free state.

[0066] Then, the top clamping wheel 20 can be locked by enabling the travel motor 34. At this time, air is supplied to the air inlet valve 28 and the cylinder 27 through the air supply pipe 33, so that the cylinder 27 extends and slides along the rack guide seat 29 with the tensioning rack 30, while rotating the tensioning gear 31. The ratchet assembly 36 can transmit the rotational motion in this rotation direction. Therefore, the tensioning gear 31 can rotate with the clamping shaft 19 and drive the clamping wheel 20 below to rotate, thereby further tensioning the rope body 5. The internal air pressure of the cylinder 27 can realize the control of the tension of the rope body 5.

[0067] When the air pressure reaches the preset value, the cylinder 27 will maintain the current air pressure. Thereafter, the gas slowly enters the air inlet valve 28 through the air supply pipe 33 to replenish the gas inside the cylinder 27. The excess gas is discharged through the pressure relief valve 32. Therefore, the internal air pressure of the cylinder 27 can be maintained, thereby keeping the tension of the rope body 5 between the two sets of clamping wheel assemblies 16 stable.

[0068] Then, the vibration generating motor 8 is started. When the cam 9 rotates, its protruding portion hits the rope body 5, causing the rope body 5 to vibrate. The vibration is transmitted to the vibration detection component 7 in the form of waves. The vibration frequency and amplitude of the rope body 5 at that location can be sensed by the sensing module 10.

[0069] If the sensing module 10 is in the form of an airbag 12 and a pressure sensor 13, then when the rope body 5 vibrates, it squeezes the airbag 12, thereby causing a pressure change in the pressure sensor 13, and then feeding back the vibration frequency and amplitude at that position;

[0070] If the sensing module 10 uses a vibration sensor, the vibration frequency and amplitude of the position can be directly fed back.

[0071] The monitoring data of the sensing module 10 can be fitted into Figure 10 As shown in the curve, during the transmission of the wave from the vibration generating component 6 to the vibration detecting component 7, since the rope is made of several twisted filaments, the internal friction between the filaments will absorb the energy of the wave, resulting in the attenuation of the amplitude;

[0072] In the test environment, since the span between the vibration generating component 6 and the vibration detecting component 7, the tension of the rope body 5, the rotation speed of the cam 9 and other factors are all constant, for the rope body 5 with uniform texture and no damage, the amplitude at the sensing module 10 is also stable compared to the attenuation amplitude at the vibration generating component 6 (the frequencies of the two positions are consistent, but there will be a time difference, so this time difference can be eliminated through software coupling); if the filaments of the rope body 5 are broken, the broken filaments are not tightened, so the friction with other filaments is reduced during the transmission of the wave, thereby reducing the internal friction of the entire rope body 5, and then reducing the attenuation amplitude of the amplitude.

[0073] By detecting the amplitude at the sensing module 10, the damage of the rope body 5 between the vibration generating component 6 and the vibration detecting component 7 can be determined. This method has a high detection efficiency because the rope body 5 within a span is detected at a time.

[0074] For each detected area, you can also test several frequency values. Generally, the frequency selection range is 20-60Hz. After the test is completed, you can enter the next detection area.

[0075] In order to facilitate understanding of the motion process of the present device and the transmission direction of the ratchet assembly 36, the motion process of the present device can also be regarded as a bicycle, the upper clamping wheel 20 represents the front wheel, the lower clamping wheel 20 represents the rear wheel, the ratchet assembly 36 represents the ratchet hub of the rear wheel, the tensioning rack 30 represents the chain, the tensioning gear 31 represents the sprocket, and the rope body 5 represents the road;

[0076] When the device moves upward, the clamping wheel 20 (wheel) will roll in contact with the rope body 5, but the tensioning rack 30 (chain) will not move (equivalent to the sliding of a bicycle); after the front clamping wheel 20 is locked (front brake locked), the tensioning rack 30 descends (the chain rotates forward), which enables the clamping wheel 20 (wheel) below to have a moving tendency. At this time, the ratchet assembly 36 (chain) transmits power, thereby achieving the purpose of tensioning the rope body 5; when the tensioning rack 30 rises and resets (the chain rotates backward), the ratchet assembly 36 does not transmit power.

[0077] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0078] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A driving rope detection device for an elevator, characterized in that: The invention comprises a vibration transmission detection mechanism (1), a clamping and fixing mechanism (2), a tensioning and holding mechanism (3) and a travel assembly (4), wherein the clamping and fixing mechanism (2) comprises a longitudinal frame (14), wherein the longitudinal frame (14) and the rope body (5) are arranged in parallel, and the vibration transmission detection mechanism (1) comprises a vibration generating assembly (6) and a vibration detecting assembly (7), wherein the vibration generating assembly (6) and the vibration detecting assembly (7) are respectively located at two ends of the longitudinal frame (14), and the tensioning and holding mechanism (3) and the travel assembly (4) are arranged on the longitudinal frame (14); The vibration detection component (7) includes a sensing module (10) and a sensing bracket (11), the sensing bracket (11) is fixed to the inside of the longitudinal frame (14), the sensing module (10) is fixed to the sensing bracket (11), the sensing module (10) is sleeved on the rope body (5) and contacts the rope body (5), and the travel distance of the traveling component (4) each time is less than the distance between the vibration generating component (6) and the vibration detection component (7), thereby avoiding the occurrence of a detection blind area; The tensioning and holding mechanism (3) comprises a pneumatic tensioning assembly (25) and a tensioning actuating assembly (26), wherein the pneumatic tensioning assembly (25) and the tensioning actuating assembly (26) are arranged on a longitudinal frame (14); The pneumatic tensioning assembly (25) includes a cylinder (27) and an air intake valve (28), wherein the cylinder (27) is fixed to the longitudinal frame (14), and the air intake valve (28) is provided at the tail of the cylinder (27). The air intake valve (28) is provided with a pressure relief valve (32) and an air supply pipe (33), and the air supply pipe (33) is connected to an external air source; The tensioning actuator assembly (26) includes a rack guide seat (29), a tensioning rack (30) and a tensioning gear (31), wherein the rack guide seat (29) is fixedly connected to the longitudinal frame (14), the tensioning rack (30) is slidably engaged in the rack guide seat (29), and one end of the tensioning rack (30) is fixedly connected to the telescopic portion of the cylinder (27); The clamping and fixing mechanism (2) further comprises a combined fork frame assembly (15) and a clamping wheel assembly (16), wherein the combined fork frame assembly (15) is symmetrically arranged at both ends of the longitudinal frame (14), and the clamping wheel assembly (16) is rotatably arranged in the combined fork frame assembly (15); The clamping wheel assembly (16) includes a clamping shaft (19), a clamping wheel (20) and a synchronous gear (21); the combined fork frame assembly (15) is composed of a fork frame assembly seat (17) and a fork frame plate (18); the clamping shaft (19) is rotatably arranged in the fork frame plate (18); the clamping wheel (20) is fixed to the clamping shaft (19); the groove of the clamping wheel (20) is uniformly provided with anti-slip grooves (24) in an annular shape; the clamping wheel (20) and the rope body (5) are in rolling contact; the synchronous gear (21) is fixed to the clamping shaft (19); and the two synchronous gears (21) are meshed and transmitted; The tensioning gear (31) is sleeved on the clamping shaft (19) at the bottom end of the longitudinal frame (14); a ratchet assembly (36) is provided between the tensioning gear (31) and the clamping shaft (19); the tensioning rack (30) and the tensioning gear (31) are meshed for transmission; the traveling assembly (4) includes a traveling motor (34) and a traveling gear (35); the traveling motor (34) is fixed to the longitudinal frame (14); the traveling gear (35) is fixed to the output shaft of the traveling motor (34); and the traveling gear (35) and the synchronous gear (21) at the top end of the longitudinal frame (14) are meshed for transmission.

2. The driving rope detection device for an elevator according to claim 1, characterized in that: The sensing module (10) comprises an airbag (12) and a pressure sensor (13), wherein the pressure sensor (13) is located inside the airbag (12).

3. The driving rope detection device for an elevator according to claim 1, characterized in that: The vibration generating assembly (6) includes a vibration generating motor (8) and a cam (9), wherein the vibration generating motor (8) is arranged on a longitudinal frame (14), and the cam (9) is arranged on an output shaft of the vibration generating motor (8), and the protrusions of the cam (9) are evenly distributed in a ring shape, and the protrusions of the cam (9) are capable of contacting the rope body (5).

4. The driving rope detection device for an elevator according to claim 1, characterized in that: The fork frame assembly seat (17) is provided with a waist hole (22), and the fork frame plate (18) is provided with a stud (23), which passes through the waist hole (22) and is fixed by a nut.

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