Steel wire rope tension monitoring device for multi-rope friction type hoister

Abstract

The invention relates to the technical field of auxiliary shaft hoister monitoring, in particular to a steel wire rope tension monitoring device for a multi-rope friction hoister, which comprises a lower hoop and an upper hoop, connecting rods are fixedly connected to the top of the front side of the lower hoop and the front side of the bottom of the upper hoop, and a tension sensor is fixedly connected between the two connecting rods. And the rear side of the upper hoop is fixedly connected with a curved frame. According to the steel wire rope tension monitoring device for the multi-rope friction type hoister, the lower hoops are arranged and installed outside the steel wire rope close to the fixed end of the top of the hoister, the steel wire rope is deformed due to tension in the stress process, the distance between the upper hoops and the lower hoops is increased, and the tension of the steel wire rope is monitored. Therefore, vertical tension is applied to the tension sensor through the connecting rod so as to collect pull rod tension generated by axial tension of the steel wire rope in real time, and the floating frame located at the top of the upper hoop and connected through the curved frame makes contact with the outer side of the steel wire rope through the floating wheel so as to carry out stress supporting on the top of the curved frame.

Description

Technical Field

[0001] This invention relates to the field of auxiliary shaft hoisting technology, specifically to a wire rope tension monitoring device for multi-rope friction hoists. Background Technology

[0002] As is well known, multi-rope friction hoists are often used in mining operations to ensure the vertical transport of goods and personnel under sufficient strength. Wire rope tension monitoring is a key technology to ensure the safe operation of multi-rope hoisting systems. The core is to monitor the wire rope tension in real time, control the tension difference within the allowable deviation, and provide early warnings of risks such as overload, slack rope, and rope breakage. Mainstream monitoring methods include hydraulic type, which is indirectly measured by a balance cylinder pressure sensor; vibrating wire type, which is directly measured by series installation; machine vision non-contact type, which is based on vibration and deflection calculation; and electromagnetic induction non-contact type, which utilizes changes in magnetic permeability.

[0003] The problems with existing technologies are that conventional monitoring methods are relatively simple, and traditional wire rope tension monitoring methods, such as some simple pressure sensor monitoring, are difficult to accurately capture subtle changes in wire rope tension, making it difficult to meet the high-precision monitoring requirements for the safe operation of hoists. Furthermore, the errors of the sensing equipment itself, as well as the limitations imposed by the installation location, and external factors such as the connection between the wire rope and pulleys or the hoist during operation may also affect the accuracy of monitoring.

[0004] Based on the problems mentioned above, we found that existing wire rope tension monitoring devices have difficulty solving these problems simultaneously. Even when using multiple sensors, the data deviation is difficult to unify due to different installation locations. Therefore, we propose a multi-rope friction hoist wire rope tension monitoring device that is floatingly installed on the outside of the wire rope, integrates different monitoring methods to reduce monitoring errors, and is quick to install and remove. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a wire rope tension monitoring device for multi-rope friction hoists. It features floating installation on the outside of the wire rope, integration of different monitoring methods to reduce monitoring errors, and rapid installation and removal.

[0007] (II) Technical Solution

[0008] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a wire rope tension monitoring device for a multi-rope friction hoist, comprising a lower ring hoist and an upper ring hoist, wherein connecting rods are fixedly connected to the top of the front side of the lower ring hoist and the front side of the bottom of the upper ring hoist, and a tension sensor is fixedly connected between the two connecting rods; a curved frame is fixedly connected to the rear side of the upper ring hoist, a floating frame is movably connected to the top of the curved frame, and a contact detection component is provided on the inner side of the curved frame;

[0009] The contact detection assembly includes a contact roller, a pressure sensing device is snapped into the inner side of the contact roller, and a flexible contact ring is provided on the inner side of the contact roller, the flexible contact ring being in contact with the pressure sensing device.

[0010] A floating wheel is rotatably connected to the inner side of the floating frame. A frame is fixedly connected to the front side of the bottom of the floating frame. A reduction motor is installed on the inner side of the frame. The output end of the reduction motor passes through the frame and is fixedly connected to a calibration module. Vibration sensors are installed on the inner sides of both the lower and upper ring hoops.

[0011] Using the above technical solution, by setting up lower and upper ring clamps, installed on the outside of the wire rope near the fixed end of the hoist top, the wire rope deforms due to tension during the stress process, increasing the distance between the upper and lower ring clamps. Therefore, a vertical tension is applied to the tension sensor via a connecting rod to collect the tension force generated by the axial tension of the wire rope in real time. A floating frame located at the top of the upper ring clamp, connected by a bend frame, contacts the outside of the wire rope through a floating wheel to provide force support at the top of the bend frame. The contact detection component located inside the bend frame, under normal conditions, contacts the wire rope surface through contact rollers, while a flexible contact ring contacts and slightly presses against the wire rope surface. The pressure sensor, through the smooth flexible contact ring, presses against the surface to monitor the micro-deformation of the wire rope due to tension. The pressure sensor then transmits the pressure signal. The signal is converted into an electrical signal, preprocessed, and output as a real-time pressure value. The single-rope tension value is obtained through mechanical calculation. By setting a flexible contact ring, the jump error caused by the gaps between the multiple strands of the wire rope can be avoided when the pressure sensor contacts the uneven surface of the wire rope. It can also complement and verify the data obtained from the tension sensor. Since the upper and lower rings are installed on the outside of the wire rope and close to the hoist, they are always far away from the pulley, reducing error and vibration. At the same time, they do not contact the hoist itself. Even if the wire rope tension increases and causes length deformation, the floating frame will be slightly pulled down by the top upper ring through the floating wheel. Therefore, the resistance pressure of the contact detection component on the wire rope is automatically constant. No matter how the wire rope vibrates or jumps, the sensor contact pressure remains unchanged, with no idle stroke, no impact, and no signal jump.

[0012] The present invention is further configured such that: an outer baffle is slidably connected to the outer side of the frame, a wheel frame is fixedly connected to the front side of the outer baffle, and the inner side of the wheel frame is rotatably connected to a contact roller.

[0013] By adopting the above technical solution, by setting an outer baffle, the cable can slide horizontally along the curved frame to install the wheel frame through the outer baffle, and the position of the wheel frame relative to the curved frame can be adjusted as needed to apply appropriate pressure to the wire rope.

[0014] The invention is further configured such that: a pressing bolt is threadedly connected to the rear side of the outer baffle, and the front side of the pressing bolt penetrates the outer baffle and is rotatably connected to the wheel frame.

[0015] By adopting the above technical solution, by setting a counterweight bolt, when the counterweight bolt is rotated, the counterweight bolt will rotate along the crank frame. At this time, the outer baffle connected to it by thread will move horizontally to drive the wheel frame to move horizontally, thereby achieving the effect of adjusting the position of the contact roller.

[0016] The invention is further configured such that: an assembly base is inserted into the outer side of the floating frame, the bottom of the assembly base is fixedly connected to the top of the curved frame, and through holes are opened on the inner sides of both the assembly base and the curved frame. A threaded pin is inserted into the inner side of the through hole, and the threaded pin passes through the assembly base and the curved frame and is threadedly connected to an assembly nut.

[0017] Using the above technical solution, by setting up an assembly base for connecting the floating frame and the curved frame, after the upper and lower ring clamps are installed on the outside of the wire rope, the floating frame can be fitted inside the wire rope and inserted into the assembly base, and then fixed by threaded pins and assembly nuts.

[0018] The present invention is further configured such that: a limiting plate is slidably connected to the front side of both the lower ring hoop and the upper ring hoop; a side plate is fixedly connected to the front side of the limiting plate; a tension spring is fixedly connected to the front side of both the lower ring hoop and the upper ring hoop; and the front side of the tension spring is fixedly connected to the side plate.

[0019] Using the above technical solution, a limiting plate is set to fix the lower or upper ring hoop to the outside of the wire rope. When the side plate is pulled from the right side of the lower or upper ring hoop, the tension spring is stretched and stored. At this time, the limiting plate opens from the front side of the lower or upper ring hoop. The wire rope is then inserted into the inner side of the lower and upper ring hoop respectively. The tension spring rebounds and resets, causing the limiting plate to re-insert into the opening of the lower or upper ring hoop.

[0020] The present invention is further configured such that: an inner groove is provided on the inner side of the limiting plate; mounting bolts are threaded to the right sides of both the lower and upper ring hoops; and pressure pads are fixedly connected to the left side of the mounting bolts and the inner side of the inner groove.

[0021] By adopting the above technical solution, an inner groove is set to fit the shape of the wire rope and increase friction to prevent slippage. After the wire rope is inserted into the inner side of the upper or lower ring, the mounting bolt can be rotated to make the pressure pad press tightly against the surface of the wire rope.

[0022] The present invention is further configured such that: a laser emitting unit is fixedly connected to the rear side of both the lower ring hoop and the upper ring hoop; a laser receiving unit is provided at the bottom of the laser emitting unit; a top laser receiving unit is fixedly connected to the rear side of the lower ring hoop; and the bottom laser receiving unit is installed on the top of the hoisting equipment.

[0023] By adopting the above technical solution, a laser emitting unit is set up in conjunction with a laser receiving unit. The top laser emitting unit and the laser receiving unit continuously receive laser signals to ensure that the steel wire rope section between the upper and lower ring hoops remains in a state without bending. The bottom laser emitting unit, in conjunction with the laser receiving unit, is used to determine whether the device is perpendicular to the hoist, so as to determine whether the steel wire rope remains vertical.

[0024] The present invention is further configured such that: the calibration module includes an extension shaft fixedly connected to the bottom of the output shaft of the reduction motor; an annular bracket is fixedly connected to the outer side of the extension shaft; an adjusting bracket is slidably connected to the outer side of the extension shaft; a fulcrum is fixedly connected to the outer side of the annular bracket; an adjusting arm is slidably connected to the outer side of the fulcrum; a hammer rod is rotatably connected to the top of the adjusting arm; and a hammer is rotatably connected to the side of the hammer rod away from the adjusting arm.

[0025] By adopting the above technical solution, and by setting up a calibration module, when the reduction motor drives the extension shaft to rotate, the outer support frame and the inner adjusting arm of the extension shaft will also rotate together. The outer hammer rod unfolds due to centrifugal tendency and strikes the vibrating steel wire rope with the hammer. The vibration sensor collects the vibration frequency of the steel wire rope, substitutes it with known parameters to back-calculate the tension value, and compares it with the force measurement data of the pulley and the tension measurement data of the tie rod to achieve calibration, error correction, and fault self-check, and solve the data deviation problem caused by sensor drift and working condition interference.

[0026] The invention is further configured such that a torsion spring is fixedly connected between the hammer rod and the hammer, and the inner side of the adjusting bracket is rotatably connected to the bottom of the adjusting arm.

[0027] Using the above technical solution, by setting a torsion spring, after the hammer hits the wire rope, it will rotate along the hammer rod due to the force. At this time, the torsion spring stores force, and then recovers by the centrifugal tendency in conjunction with the spring's rebound.

[0028] The present invention is further configured such that: an outer edge plate is fixedly connected to the bottom of the extension shaft, an adjusting screw is threadedly connected to the inner side of the outer edge plate, and the top of the adjusting screw is rotatably connected to the adjusting bracket.

[0029] By adopting the above technical solution, an adjusting screw is set up to move up and down as it rotates along the outer edge plate, thereby adjusting the height of the support. When the support is raised and lowered, the adjusting arm connected to it slides and rotates along the fulcrum frame to expand or close synchronously, thereby achieving the effect of adjusting the hammer position.

[0030] (III) Beneficial Effects

[0031] Compared with the prior art, the present invention provides a wire rope tension monitoring device for multi-rope friction hoists, which has the following advantages:

[0032] This multi-rope friction hoist wire rope tension monitoring device, through the installation of upper and lower ring clamps on the outside of the wire rope near the fixed end of the hoist top, utilizes a lower ring clamp. During the process of the wire rope being stressed, deformation occurs due to tension, increasing the distance between the upper and lower ring clamps. This, in turn, applies a vertical tension to the force sensor via a connecting rod, allowing for real-time acquisition of the tension generated by the axial stretching of the wire rope. A floating frame, located at the top of the upper ring clamp and connected via a bend, contacts the outside of the wire rope through a floating wheel, providing force support at the top of the bend. The contact detection component located inside the bend, under normal conditions, contacts the wire rope surface through contact rollers, while a flexible contact ring contacts and slightly presses against the wire rope surface. The pressure sensor, through the smooth, flexible contact ring, presses against the surface to monitor the micro-deformation of the wire rope caused by tension. The pressure sensor... The pressure signal is converted into an electrical signal, and after preprocessing, a real-time pressure value is output. The single-rope tension value is obtained through mechanical calculation. By setting a flexible contact ring, the jumping error caused by the gaps between the multiple strands of the wire rope can be avoided when the pressure sensor contacts the uneven surface of the wire rope. It can also complement and verify the data obtained from the tension sensor. Since the upper and lower rings are installed on the outside of the wire rope and close to the hoist, they are always far away from the pulley, reducing error and vibration. At the same time, they do not contact the hoist itself. Even if the wire rope tension increases and causes length deformation, the floating frame will be slightly pulled down by the top upper ring through the floating wheel. Therefore, the resistance pressure of the contact detection component on the wire rope is automatically constant. Regardless of the wire rope shaking or jumping, the sensor contact pressure remains unchanged, with no idle stroke, no impact, and no signal jump. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structural installation in this invention;

[0034] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0035] Figure 3 This is a schematic diagram of the contact detection component in this invention;

[0036] Figure 4 This is a schematic diagram of the connection of the floating wheel in this invention;

[0037] Figure 5 This is a rear view of the main structure in this invention;

[0038] Figure 6 This is a schematic diagram of the calibration module in this invention;

[0039] Figure 7 This is a schematic diagram of the lower ring hoop in the present invention;

[0040] Figure 8 This is a schematic diagram of the main structure of the present invention from the right side.

[0041] In the diagram: 1. Lower ring clamp; 2. Upper ring clamp; 3. Connecting rod; 4. Tension sensor; 5. Crank frame; 6. Floating frame; 7. Contact detection assembly; 71. Contact roller; 72. Pressure sensing device; 73. Flexible contact ring; 8. Floating wheel; 9. Frame; 10. Gear motor; 11. Calibration module; 111. Extension shaft; 112. Ring bracket; 113. Adjusting bracket; 114. Support frame; 115. Adjusting arm; 116. Hammer rod; 117. Hammer; 12. Outer baffle; 13. Wheel frame; 14. Pressure bolt; 15. Assembly base; 16. Threaded pin; 17. Limiting plate; 18. Side plate; 19. Tension spring; 20. Inner groove; 21. Mounting bolt; 22. Pressure pad; 23. Laser emitting unit; 24. Laser receiving unit; 25. Torsion spring; 26. Outer edge plate; 27. Adjusting screw. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Example 1

[0044] Please see Figure 1-8 A wire rope tension monitoring device for a multi-rope friction hoist includes a lower ring hoist 1 and an upper ring hoist 2. A connecting rod 3 is fixedly connected to the top of the front side of the lower ring hoist 1 and the front side of the bottom of the upper ring hoist 2. A tension sensor 4 is fixedly connected between the two connecting rods 3. A curved frame 5 is fixedly connected to the rear side of the upper ring hoist 2. A floating frame 6 is movably connected to the top of the curved frame 5. A contact detection component 7 is provided on the inner side of the curved frame 5.

[0045] The contact detection assembly 7 includes a contact roller 71, a pressure sensing device 72 is snapped into the inner side of the contact roller 71, and a flexible contact ring 73 is provided on the inner side of the contact roller 71, which contacts the pressure sensing device 72.

[0046] A floating wheel 8 is rotatably connected to the inner side of the floating frame 6. A frame 9 is fixedly connected to the front side of the bottom of the floating frame 6. A reduction motor 10 is installed on the inner side of the frame 9. The output end of the reduction motor 10 passes through the frame 9 and is fixedly connected to a calibration module 11. Vibration sensors are installed on the inner sides of the lower ring hoop 1 and the upper ring hoop 2.

[0047] By setting up lower hoop 1 and lower ring 2, which are installed on the outside of the wire rope near the fixed end of the top of the hoist, the wire rope deforms due to tension during the stress process, increasing the distance between the upper hoop 2 and lower hoop 1. Therefore, a vertical tension is applied to the tension sensor 4 through the connecting rod 3 to collect the tension generated by the axial tension of the wire rope in real time. The floating frame 6, located at the top of the upper hoop 2 and connected to the curved frame 5, contacts the outside of the wire rope through the floating wheel 8 to provide force support at the top of the curved frame 5. The contact detection component 7, located inside the curved frame 5, contacts the surface of the wire rope through the contact roller 71 in the normal state. At the same time, the flexible contact ring 73 contacts the surface of the wire rope and slightly presses against it. The pressure sensor monitors the micro-deformation of the wire rope due to tension by pressing against it through the smooth flexible contact ring 73. Later, the pressure sensor transmits the pressure signal. The signal is converted into an electrical signal, preprocessed, and output as a real-time pressure value. The single-rope tension value is obtained through mechanical calculation. By setting a flexible contact ring 73, the jump error caused by the gaps between the multiple strands of the wire rope can be avoided when the pressure sensor contacts the uneven surface of the wire rope. It can also be used to complement and verify the data obtained from the tension sensor 4. Since the upper ring 2 and the lower ring 1 are both installed on the outside of the wire rope and are located close to the hoist, they are always far away from the pulley, reducing error and vibration. At the same time, they do not contact the hoist itself. Even if the wire rope tension increases and causes length deformation, the floating frame 6 will be slightly pulled down by the top upper ring 2 through the floating wheel 8. Therefore, the resistance pressure of the contact detection component 7 on the wire rope is automatically constant. No matter how the wire rope vibrates or jumps, the sensor contact pressure remains unchanged, with no idle stroke, no impact, and no signal jump.

[0048] The outer side of the crank frame 5 is slidably connected to an outer baffle 12. A wheel frame 13 is fixedly connected to the front side of the outer baffle 12. The inner side of the wheel frame 13 is rotatably connected to a contact roller 71. By setting the outer baffle 12, it can slide horizontally along the crank frame 5 to install the wheel frame 13 and adjust the position of the wheel frame 13 relative to the crank frame 5 as needed to apply appropriate pressure to the wire rope. A pressing bolt 14 is threadedly connected to the rear side of the outer baffle 12. The front side of the pressing bolt 14 passes through the outer baffle 12 and is rotatably connected to the wheel frame 13. By setting the pressing bolt 14, when the pressing bolt 14 is rotated, the pressing bolt 14 will rotate along the crank frame 5. At this time, the outer baffle 12 threadedly connected to it will move horizontally to drive the wheel frame 13 to move horizontally. The floating frame 6 is moved to adjust the position of the contact roller 71. An assembly seat 15 is inserted into the outer side of the floating frame 6. The bottom of the assembly seat 15 is fixedly connected to the top of the crank frame 5. Both the assembly seat 15 and the crank frame 5 have through holes on their inner sides. A threaded pin 16 is inserted into the inner side of the through hole. The threaded pin 16 passes through the assembly seat 15 and the crank frame 5 and is threadedly connected to an assembly nut. The assembly seat 15 is used to connect the floating frame 6 and the crank frame 5. After the upper ring hoop 2 and the lower ring hoop 1 are installed on the outside of the wire rope, the floating frame 6 can be fitted inside the wire rope and inserted into the assembly seat 15. It is then fixed by the threaded pin 16 and the assembly nut. The front sides of the lower ring hoop 1 and the upper ring hoop 2 are slidably connected to a limit plate 17. The front side of the limit plate 17 is fixedly connected to a side plate 1. 8. A tension spring 19 is fixedly connected to the front side of both the lower ring hoop 1 and the upper ring hoop 2. The front side of the tension spring 19 is fixedly connected to the side plate 18. A limiting plate 17 is provided to fix the lower ring hoop 1 or the upper ring hoop 2 to the outside of the wire rope. When the side plate 18 is pulled from the right side of the lower ring hoop 1 or the upper ring hoop 2, the tension spring 19 is stretched and stores force. At this time, the limiting plate 17 opens from the front side of the lower ring hoop 1 or the upper ring hoop 2. The wire rope is then inserted into the inner side of the lower ring hoop 1 and the upper ring hoop 2 respectively. The tension spring 19 rebounds and resets, causing the limiting plate 17 to re-insert into the opening of the lower ring hoop 1 or the upper ring hoop 2. An inner groove 20 is provided on the inner side of the limiting plate 17. The right side of both the lower ring hoop 1 and the upper ring hoop 2 are threaded with mounting bolts 21. The left side of the mounting bolts 21 and the inner side of the inner groove 20 are fixed. A pressure pad 22 is fixedly connected, and an inner groove 20 is provided to conform to the shape of the wire rope and increase friction to prevent slippage. The mounting bolt 21, after the wire rope is inserted into the inner side of the upper ring 2 or lower ring 1, can be rotated to make the pressure pad 22 firmly press against the surface of the wire rope. Laser emitting units 23 are fixedly connected to the rear side of both the lower ring 1 and the upper ring 2. A laser receiving unit 24 is located at the bottom of the laser emitting unit 23, and the top laser receiving unit 24 is fixedly connected to the rear side of the lower ring 1. The bottom laser receiving unit 24 is installed on the top of the hoisting equipment. By setting up the laser emitting unit 23 in conjunction with the laser receiving unit 24, the top laser emitting unit 23 and the laser receiving unit 24 continuously receive laser signals.To ensure the wire rope section between the upper hoist 2 and the lower hoist 1 remains unbent, the bottom laser emitting unit 23, in conjunction with the laser receiving unit 24, determines whether the device is perpendicular to the hoist, thus determining whether the wire rope remains vertical.

[0049] The working principle of this embodiment is as follows: The lower hoop 1 and the upper hoop 2 are attached to the outside of the wire rope near the fixed end of the top of the hoist. When the wire rope is subjected to tension and undergoes axial deformation, the distance between the upper and lower hoop 1 increases. The connecting rod 3 drives the tension sensor 4 to collect the axial tension signal. The floating frame 6 connected to the curved frame 5 on the rear side of the upper hoop 2 uses the floating wheel 8 to fit against the outside of the wire rope to achieve force support and floating self-adaptation. The contact roller 71 of the contact detection component 7 on the inner side of the curved frame 5, together with the flexible contact ring 73, is in close contact with the surface of the wire rope, uniformly transmitting the radial micro-deformation of the rope to the pressure sensing device 72, avoiding signal jumps caused by the gap between the rope strands. The two monitoring data complement each other for verification, and the installation position is far away from the pulley to reduce error jitter. At the same time, the floating self-adaptive structure allows the contact detection group to... The component 7 maintains a constant resistance force on the wire rope, unaffected by wire rope vibration or jumping, with no idle stroke, no impact, and no signal jump. The outer baffle 12, in conjunction with the pressure bolt 14, allows for lateral fine adjustment of the position of the wheel frame 13 and the contact roller 71, adjusting the preload as needed. The floating frame 6 and the curved frame 5 are quickly connected and fixed by the assembly seat 15 and the threaded pin 16. The upper and lower ring hoops 1 are quickly clamped by the limiting plate 17 and the tension spring 19, and are tightly fixed by the mounting bolt 21 and the pressure pad 22. The inner groove 20 of the limiting plate 17 fits the rope body to increase friction and prevent slippage. The laser emitting unit 23 and the laser receiving unit 24 on the rear side of the ring hoop monitor the rope posture and device verticality between the upper and lower ring hoops 1 in real time, further correcting deformation and sway errors and improving monitoring accuracy.

[0050] Example 2

[0051] refer to Figure 1-6 A wire rope tension monitoring device for a multi-rope friction hoist also includes a calibration module 11. The calibration module 11 includes an extension shaft 111 fixedly connected to the bottom of the output shaft of the reduction motor 10. An annular bracket 112 is fixedly connected to the outside of the extension shaft 111. An adjusting bracket 113 is slidably connected to the outside of the extension shaft 111. A fulcrum frame 114 is fixedly connected to the outside of the annular bracket 112. An adjusting arm 115 is slidably connected to the outside of the fulcrum frame 114. A hammer rod 116 is rotatably connected to the top of the adjusting arm 115. A hammer 117 is rotatably connected to the side of the hammer rod 116 away from the adjusting arm 115.

[0052] By setting the calibration module 11, when the reduction motor 10 drives the extension shaft 111 to rotate, the support frame 114 on the outside of the extension shaft 111 and the adjusting arm 115 on the inside will also rotate together. The hammer rod 116 on the outside will unfold due to centrifugal tendency and strike the vibrating steel wire rope through the hammer 117. The vibration sensor collects the vibration frequency of the steel wire rope, substitutes the known parameters to back-calculate the tension value, and compares it with the force measurement data of the pulley and the tension measurement data of the tie rod to achieve calibration, error correction, and fault self-check, and solve the data deviation problem caused by sensor drift and working condition interference.

[0053] A torsion spring 25 is fixedly connected between the hammer rod 116 and the hammer 117. The inner side of the adjusting bracket 113 is rotatably connected to the bottom of the adjusting arm 115. By setting the torsion spring 25, after the hammer 117 hits the wire rope, it will rotate along the hammer rod 116 due to the force. At this time, the torsion spring 25 stores force and then returns to its original position through centrifugal force. The bottom of the extension shaft 111 is fixedly connected to the outer edge plate 26. The inner side of the outer edge plate 26 is threaded with an adjusting screw 27. The top of the adjusting screw 27 is rotatably connected to the adjusting bracket 113. By setting the adjusting screw 27, it will rise and fall when rotating along the outer edge plate 26 to push and pull the adjusting bracket 113 to rise and fall. When the adjusting bracket 113 rises and falls, the adjusting arm 115 connected to it will slide and rotate along the fulcrum frame 114 to expand or close synchronously, thereby adjusting the hammer position.

[0054] The working principle of this embodiment is as follows: The reduction motor 10 drives the extension shaft 111 to rotate, which drives the ring bracket 112, the fulcrum frame 114 and the adjusting arm 115 to rotate synchronously. The hammer rod 116 unfolds under centrifugal force, and with the help of the torsion spring 25, the hammer 117 reciprocates to strike the steel wire rope, causing it to vibrate. The vibration sensor collects the vibration frequency and back-calculates the tension value. It is compared with the tension and pressure sensor data to complete online calibration, error correction and fault self-check, and solve the data deviation caused by sensor drift and working condition interference. Rotating the adjusting screw 27 on the outer edge plate 26 can push and pull the adjusting bracket 113 to rise and fall, which drives the adjusting arm 115 to slide and deflect along the fulcrum frame 114, and synchronously adjusts the unfolding range of the hammer rod 116 and the hammer 117, thereby accurately adjusting the hammer position and striking force to adapt to different working condition calibration requirements.

[0055] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. Those skilled in the art can make modifications to this embodiment without contributing any inventive step after reading this specification. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire rope tension monitoring device for a multi-rope friction hoist, comprising a lower ring clamp (1) and an upper ring clamp (2), characterized in that: The top of the front side of the lower ring hoop (1) and the front side of the bottom of the upper ring hoop (2) are both fixedly connected to connecting rods (3). A tension sensor (4) is fixedly connected between the two connecting rods (3). A curved frame (5) is fixedly connected to the rear side of the upper ring hoop (2). A floating frame (6) is movably connected to the top of the curved frame (5). A contact detection component (7) is provided on the inner side of the curved frame (5). The contact detection assembly (7) includes a contact roller (71), a pressure sensing device (72) is snapped into the inner side of the contact roller (71), and a flexible contact ring (73) is provided on the inner side of the contact roller (71), and the flexible contact ring (73) contacts the pressure sensing device (72). The floating frame (6) is rotatably connected to a floating wheel (8). The front side of the bottom of the floating frame (6) is fixedly connected to a frame (9). A reduction motor (10) is installed on the inner side of the frame (9). The output end of the reduction motor (10) passes through the frame (9) and is fixedly connected to a calibration module (11). Vibration sensors are installed on the inner sides of the lower ring hoop (1) and the upper ring hoop (2).

2. The wire rope tension monitoring device for a multi-rope friction hoist according to claim 1, characterized in that: The outer side of the crank frame (5) is slidably connected to an outer baffle (12), and a wheel frame (13) is fixedly connected to the front side of the outer baffle (12). The inner side of the wheel frame (13) is rotatably connected to a contact roller (71).

3. The wire rope tension monitoring device for a multi-rope friction hoist according to claim 2, characterized in that: The rear side of the outer baffle (12) is threaded with a pressing bolt (14), and the front side of the pressing bolt (14) passes through the outer baffle (12) and is rotatably connected to the wheel frame (13).

4. The wire rope tension monitoring device for a multi-rope friction hoist according to claim 1, characterized in that: An assembly base (15) is inserted into the outside of the floating frame (6). The bottom of the assembly base (15) is fixedly connected to the top of the curved frame (5). Both the assembly base (15) and the curved frame (5) have through holes on their inner sides. A threaded pin (16) is inserted into the inner side of the through hole. The threaded pin (16) passes through the assembly base (15) and the curved frame (5) and is threadedly connected to an assembly nut.

5. The wire rope tension monitoring device for a multi-rope friction hoist according to claim 1, characterized in that: The front sides of the lower ring hoop (1) and the upper ring hoop (2) are slidably connected to a limiting plate (17), and the front side of the limiting plate (17) is fixedly connected to a side plate (18). The front sides of the lower ring hoop (1) and the upper ring hoop (2) are fixedly connected to a tension spring (19), and the front side of the tension spring (19) is fixedly connected to the side plate (18).

6. The wire rope tension monitoring device for a multi-rope friction hoist according to claim 5, characterized in that: The inner side of the limiting plate (17) is provided with an inner groove (20), and the right side of the lower ring (1) and the upper ring (2) are threaded with mounting bolts (21). The left side of the mounting bolts (21) and the inner side of the inner groove (20) are fixedly connected with pressure pads (22).

7. The wire rope tension monitoring device for a multi-rope friction hoist according to claim 1, characterized in that: Laser emitting units (23) are fixedly connected to the rear side of the lower ring hoop (1) and the rear side of the upper ring hoop (2). A laser receiving unit (24) is provided at the bottom of the laser emitting unit (23). The top laser receiving unit (24) is fixedly connected to the rear side of the lower ring hoop (1). The bottom laser receiving unit (24) is installed on the top of the hoisting equipment.

8. The wire rope tension monitoring device for a multi-rope friction hoist according to claim 1, characterized in that: The calibration module (11) includes an extension shaft (111) fixedly connected to the bottom of the output shaft of the reduction motor (10). An annular bracket (112) is fixedly connected to the outside of the extension shaft (111). An adjusting bracket (113) is slidably connected to the outside of the extension shaft (111). A fulcrum frame (114) is fixedly connected to the outside of the annular bracket (112). An adjusting arm (115) is slidably connected to the outside of the fulcrum frame (114). A hammer rod (116) is rotatably connected to the top of the adjusting arm (115). A hammer (117) is rotatably connected to the side of the hammer rod (116) away from the adjusting arm (115).

9. The wire rope tension monitoring device for a multi-rope friction hoist according to claim 8, characterized in that: A torsion spring (25) is fixedly connected between the hammer rod (116) and the hammer (117), and the inner side of the adjusting bracket (113) is rotatably connected to the bottom of the adjusting arm (115).

10. The wire rope tension monitoring device for a multi-rope friction hoist according to claim 8, characterized in that: The bottom of the extension shaft (111) is fixedly connected to an outer edge plate (26), and the inner side of the outer edge plate (26) is threadedly connected to an adjusting screw (27). The top of the adjusting screw (27) is rotatably connected to the adjusting bracket (113).

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