Elevator traction machine brake monitoring device

Abstract

An elevator traction machine brake monitoring device comprises an elevator control cabinet and an elevator traction machine, the elevator traction machine comprises a motor, a brake wheel, a traction wheel and a brake, the brake comprises a brake base, a brake mechanism and an electromagnet device, and the brake base and the brake mechanism are both installed on a motor body of the motor. The electromagnet device is mounted on the brake base and is in transmission fit with the brake mechanism; a mounting assembly is arranged on the brake base, a brake state monitoring module is mounted on the mounting assembly, the brake state monitoring module is in communication connection with a monitoring control module, and the monitoring control module is in communication connection with an elevator control cabinet. During use, the rotation condition of the brake wheel is detected through the brake state monitoring module after the brake wheel is braked by the brake mechanism, and if the brake wheel is not effectively braked at the moment, the monitoring control module sends a brake abnormity alarm signal to the elevator control cabinet to give an alarm, so that safe operation of an elevator is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a monitoring device for a brake of an elevator traction machine. Background Art

[0002] The elevator traction machine is the power equipment of the elevator, which is used to transport and transmit power to make the elevator run. The elevator traction machine is usually composed of a motor, a brake wheel, a traction wheel and a brake. The motor is usually a permanent magnet synchronous motor. The brake wheel and the traction wheel are both installed on the rotating shaft of the motor and can rotate synchronously with the rotating shaft. The brake is installed on the motor body of the motor and can cooperate with the brake wheel to stop the rotating shaft of the motor. For the elevator traction machine, the safety and reliability of the brake is one of the important factors to ensure the safe operation of the elevator, which is directly related to the safety of the elevator equipment and passengers.

[0003] Referring to the Chinese patent No. CN202222236578.X, an intelligent monitoring device for elevator brake performance is disclosed, which includes a base, a magnet is provided on the top of the base, an elevator traction mechanism brake wheel is provided under the base, a spare tensioning device, a PLC controller and a safety alarm are provided on the lower surface of the base from left to right, a plurality of connecting seats are symmetrically provided on both sides of the base, a brake rod assembly and a counting device are provided on one side of the connecting seat, and a brake arm is connected under the connecting seat. During the use of the elevator brake, the number of times the compression spring is extended and retracted can be accurately calculated, and the wear of the compression spring can be estimated in advance. When the compression spring reaches the upper limit of use, the alarm function is automatically started, and the elevator is temporarily braked by starting the spare tensioning device. The protection can be timely and effectively reminded to replace the compression spring, and the compression spring is avoided from being overused, causing the brake to fail, thereby causing greater safety hazards. However, this structure can only monitor the use of the compression spring to realize the alarm, and the monitoring function is relatively single. When the brake shoe of the brake is seriously worn, the brake is also prone to fail to effectively stop the brake wheel, so that there is a problem that it cannot accurately monitor whether the brake wheel is effectively stopped, and the safety of the elevator cannot be guaranteed. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides an elevator traction machine brake monitoring device.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] An elevator traction machine brake monitoring device comprises an elevator control cabinet and an elevator traction machine, wherein the elevator traction machine comprises a motor, a brake wheel, a traction wheel and a brake, wherein the brake comprises a brake base, a brake mechanism and an electromagnet device, wherein the brake base and the brake mechanism are both mounted on the motor body of the motor, the electromagnet device is mounted on the brake base and is in transmission cooperation with the brake mechanism, and the electromagnet device and the motor are both connected and controlled by the elevator control cabinet; the characteristics are as follows:

[0007] The brake base is provided with an installation component, on which is installed a brake status monitoring module for detecting the rotation of the brake wheel after the brake mechanism performs a braking action on the brake wheel. The brake status monitoring module is communicatively connected to a monitoring control module for sending the detection result to the elevator control cabinet according to the monitoring signal of the brake status monitoring module, and the monitoring control module is communicatively connected to the elevator control cabinet.

[0008] In the utility model, a brake in-place monitoring component for judging whether the brake arm is in-place when performing a braking action is provided on the brake base, and each of the brake in-place monitoring components corresponds to a brake arm of a brake mechanism.

[0009] In the utility model, the brake in-place monitoring assembly comprises an in-place monitoring switch and a brake monitoring base, the brake monitoring base is mounted on the brake base, and the in-place monitoring switch is mounted on the brake monitoring base.

[0010] In the utility model, the in-place monitoring switch is also communicatively connected with the monitoring control module.

[0011] In the utility model, the braking status monitoring module includes a detection shaft, a detection roller and an encoder. The detection roller is rotatably mounted on the mounting assembly via the detection shaft, and the detection shaft is driven by the detection roller to rotate synchronously; a detection ring that rotates synchronously with the brake wheel is provided on the outer circumference of the brake wheel, and the detection ring is coaxially arranged with the brake wheel; the roller surface of the detection roller rolls in contact with the outer circumference of the detection ring, and the detection roller can drive the detection shaft to rotate when it is driven to rotate by the detection ring; the encoder is mounted on the mounting assembly and the detection shaft of the encoder is connected to the detection shaft.

[0012] In the utility model, the mounting assembly includes a mounting base and two movable swing arms. The mounting base is mounted on a brake base. The two movable swing arms are symmetrically arranged front to back and one end of each is configured on the mounting base. The detection roller is located between the other ends of the two movable swing arms. The two ends of the detection shaft are respectively rotatably matched with the other ends of the two movable swing arms, and the encoder is mounted on one of the movable swing arms.

[0013] In the utility model, one end of the two movable swing arms are rotatably mounted on the mounting base using the same swing mounting shaft, and a spacer is mounted on the swing mounting shaft. The opposite ends of the spacer are respectively fixedly connected to the two movable swing arms; an elastic support component is arranged between the middle part of each movable swing arm and the mounting base to enable the detection roller to always maintain rolling contact with the detection ring.

[0014] In the utility model, the elastic support assembly includes a monitoring compression spring, a monitoring bolt, a first connecting seat and a second connecting seat. The first connecting seat is rotatably mounted on the middle part of the movable swing arm; the second connecting seat is rotatably mounted on the mounting base, and the screw section of the monitoring bolt passes through the connecting through hole of the first connecting seat and is threadedly engaged in the connecting screw hole of the second connecting seat; the monitoring compression spring is sleeved on the screw section of the monitoring bolt, and one end of the monitoring compression spring abuts against the first connecting seat, and the other end abuts against the second connecting seat.

[0015] In the utility model, a buffer ring is sleeved on the screw section of the monitoring bolt, the buffer ring is located between the first connecting seat and the bolt head of the monitoring bolt, and the buffer ring is made of rubber material.

[0016] In the utility model, the mounting base is matched on the brake base in an adjustable height.

[0017] The beneficial effects of the utility model: the utility model is provided with a braking state monitoring module and a monitoring control module. When in use, the braking state monitoring module detects the rotation of the brake wheel after the braking mechanism performs a braking action on the brake wheel. If the brake wheel is not effectively braked at this time, the monitoring control module sends a braking abnormality alarm signal to the elevator control cabinet to alarm, thereby ensuring the safe operation of the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is a three-dimensional diagram of an elevator traction machine;

[0020] Figure 2 This is the front view of the elevator traction machine;

[0021] Figure 3 is a three-dimensional diagram of a brake status monitoring module;

[0022] Figure 4 This is the right view of the brake status monitoring module;

[0023] Figure 5 for Figure 4 Sectional view of AA in the middle;

[0024] Figure 6 The figure is a schematic diagram of installing the rope retaining assembly on the brake base;

[0025] Figure 7 This is a schematic diagram of the installation of the rope retaining installation shaft;

[0026] Figure 8 is a three-dimensional diagram of the environment monitoring module;

[0027] Fig. 9 This is a schematic diagram of the structure of thermal conductive silicone in the temperature monitoring hole;

[0028] Fig.10 is a structural schematic diagram of a backup brake device;

[0029] Fig.11 FIG. 4 is a connection block diagram of this embodiment. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0031] Reference Figure 1-11 A monitoring device for an elevator traction machine brake comprises an elevator control cabinet 1 and an elevator traction machine 2. The elevator traction machine 2 comprises a motor, a brake wheel 22, a traction wheel 23 and a brake. The brake wheel 22 and the traction wheel 23 are both mounted on the rotating shaft of the motor and can rotate synchronously with the rotating shaft. The brake comprises a brake base 24, a brake mechanism 25 for cooperating with the brake wheel 22 to stop the traction wheel 23, and an electromagnet device 26 for controlling the operation of the brake mechanism 25. The brake base 24 and the brake mechanism 25 are both mounted on a motor body 21 of the motor. The electromagnet device 26 is mounted on the brake base 24 and is in transmission cooperation with the brake mechanism 25. The electromagnet device 26 and the motor are both connected and controlled by the elevator control cabinet 1.

[0032] Furthermore, a mounting assembly 3 is provided on the brake base 24, and a brake state monitoring module 4 is installed on the mounting assembly 3 for detecting the rotation of the brake wheel 22 after the brake mechanism 25 performs a braking action on the brake wheel 22. The brake state monitoring module 4 is communicatively connected to a monitoring control module 5 for sending a detection result to the elevator control cabinet 1 according to a monitoring signal of the brake state monitoring module 4, and the monitoring control module 5 is communicatively connected to the elevator control cabinet 1. The utility model detects the rotation of the brake wheel 22 after the brake mechanism 25 performs a braking action on the brake wheel 22 through the brake state monitoring module 4. If the brake wheel 22 is not effectively braked at this time, the monitoring control module 5 sends a brake abnormality alarm signal to the elevator control cabinet 1 to alarm, thereby ensuring the safe operation of the elevator.

[0033] As a preferred embodiment, there are two braking mechanisms 25, which are respectively located on the left and right sides of the brake wheel 22. The two braking mechanisms 25 are symmetrically arranged on the left and right sides. Two action connecting rods 261 corresponding to the two braking mechanisms 25 are arranged on the electromagnet device 26. The braking mechanism 25 includes a brake arm 251, a brake shoe 252, a first mounting shaft 253, a brake rod 254 and a brake compression spring 255. The lower end of the brake arm 251 is rotatably mounted on the motor body 21 using the first mounting shaft 253, and the upper end is matched with the action connecting rod 261; the brake shoe 252 is rotatably mounted on the brake arm 251 using the second mounting shaft 256.

[0034] Furthermore, a brake matching hole is provided on the brake arm 251, one end of the brake rod 254 is installed on the side of the brake base 24, and the other end is extended through the brake matching hole and is installed with a brake matching block 257, the brake compression spring 255 is sleeved on the brake rod 254 and located between the brake matching block 257 and the brake arm 251, and the two ends of the brake compression spring 255 are respectively abutted against the brake matching block 257 and the brake arm 251. When the electromagnet device 26 is energized, a bidirectional electromagnetic thrust is generated, so that the action link 261 drives the brake arm 251 to swing, during which the brake shoe 252 releases the brake wheel 22, and the brake compression spring 255 is compressed; when the electromagnet device 26 is powered off, the electromagnetic force disappears, and the brake arm 251 is driven to swing under the action of the expansion pressure of the external brake compression spring 255, so that the brake shoe 252 is pressed against the brake wheel 22, and the braking is completed.

[0035] Furthermore, the brake mating block 257 is slidably mounted on the brake rod 254 and can move along the axial direction of the brake rod 254. A brake mating nut 258 is threadedly mounted on the other end of the brake rod 254. The brake mating nut 258 is located on the side of the brake mating block 257 that is away from the brake compression spring 255, thereby limiting the brake mating block 257 from sliding out of the other end of the brake rod 254. At the same time, the position of the brake mating block 257 can be adjusted by rotating the brake mating nut 258, and the axial position of the brake compression spring 255 installed on the brake rod 254 can be adjusted to achieve the adjustment of the compression amount of the brake compression spring 255, thereby controlling the braking force of the brake.

[0036] As a preferred embodiment, the brake base 24 is provided with two brake in-place monitoring components 27 for judging whether the brake arm 251 is in-place when performing the braking action, and the two brake in-place monitoring components 27 correspond to the brake arms 251 of the two brake mechanisms 25 respectively. Further, the brake in-place monitoring component 27 includes a brake in-place monitoring switch 271 and a brake monitoring base 272, the brake monitoring base 272 is mounted on the brake base 24, the brake in-place monitoring switch 271 is mounted on the brake monitoring base 272, and the monitoring ends of the brake in-place monitoring switches 271 of the two brake in-place monitoring components 27 correspond to the brake arms 251 of the two brake mechanisms 25 respectively. When the brake arm 251 is pressed against the detection end of the brake in-place monitoring switch 271 during the braking process, it indicates that the brake arm 251 has been in-placed, and the brake in-place monitoring switch 271 is connected to the elevator control cabinet 1 for communication, so that the elevator control cabinet 1 can know the brake mechanism 25 and complete the braking action of the elevator traction machine 2.

[0037] As a preferred embodiment, the in-place monitoring switch 271 adopts a micro switch, and the in-place monitoring switch 271 is also communicated with the monitoring control module 5, so that the monitoring data of the in-place monitoring switch 271 is also synchronized to the monitoring control module 5. After receiving the monitoring signal of the in-place monitoring switch 271, the monitoring control module 5 starts to use the braking status monitoring module 4 to monitor whether the brake wheel 22 is still rotating. If the brake wheel 22 is still rotating beyond the preset threshold, the monitoring control module 5 determines that the brake has an abnormal fault and sends a braking abnormality alarm signal to the elevator control cabinet 1, and the elevator control cabinet 1 alarms the outside world accordingly.

[0038] As a preferred embodiment, the braking state monitoring module 4 includes a detection shaft, a detection roller 41 and an encoder 42. The detection roller 41 is rotatably mounted on the mounting assembly 3 via the detection shaft, and the detection shaft is driven by the detection roller 41 to rotate synchronously; a detection ring 221 is provided on the outer peripheral surface of the brake wheel 22 and rotates synchronously therewith, and the detection ring 221 is coaxially arranged with the brake wheel 22, and the detection ring 221 is arranged away from the brake shoe 252 and the spare brake shoe 91, so as to avoid the brake shoe 252 and the spare brake shoe 91 from rubbing and damaging the detection ring 221; the roller surface of the detection roller 41 rolls in contact with the outer peripheral surface of the detection ring 221, and the detection roller 41 can drive the detection shaft to rotate when it is driven to rotate by the detection ring 221; the encoder 42 is mounted on the mounting assembly 3 and the detection shaft of the encoder 42 is connected to the detection shaft.

[0039] As a preferred embodiment, the mounting assembly 3 includes a mounting base 31 and two movable swing arms 32. The mounting base 31 is mounted on the brake base 24. The two movable swing arms 32 are symmetrically arranged front to back and one end of each is configured on the mounting base 31. The detection roller 41 is located between the other ends of the two movable swing arms 32. The two ends of the detection shaft are respectively rotatably matched with the other ends of the two movable swing arms 32. The encoder 42 is installed on one of the movable swing arms 32.

[0040] In this embodiment, one end of the two movable swing arms 32 are rotatably mounted on the mounting base 31 using the same swing mounting shaft 33, and a spacer 34 is mounted on the swing mounting shaft 33. The opposite ends of the spacer 34 are respectively fixedly connected to the two movable swing arms 32, thereby separating the two movable swing arms 32. At the same time, under the connecting action of the spacer 34, the two movable swing arms 32 can synchronously rotate and swing around the swing mounting shaft 33 as the rotation center; an elastic support component is arranged between the middle part of each movable swing arm 32 and the mounting base 31 to enable the detection roller 41 to always maintain rolling contact with the detection ring 221. The elastic support component elastically supports the detection roller 41, so that the detection roller 41 can rise and fall with the changes in the outer peripheral surface of the detection ring 221, thereby always maintaining a state of contact with the outer peripheral surface of the detection ring 221, thereby ensuring that the detection roller 41 can effectively monitor the rotation of the brake wheel 22.

[0041] Furthermore, the elastic support assembly includes a monitoring compression spring 35, a monitoring bolt 36, a first connecting seat 37 and a second connecting seat 38. The first connecting seat 37 is rotatably mounted on the middle part of the movable swing arm 32. The first connecting seat 37 is provided with a connecting through hole. The outer diameter of the screw section of the monitoring bolt 36 is smaller than the aperture of the connecting through hole. The second connecting seat 38 is rotatably mounted on the mounting base 31. The second connecting seat 38 is provided with a connecting screw hole. The screw section of the monitoring bolt 36 passes through the connecting through hole and is threadedly engaged in the connecting screw hole to achieve the engagement between the monitoring bolt 36 and the first connecting seat 37 and the second connecting seat 38. The monitoring compression spring 35 is sleeved on the screw section of the monitoring bolt 36, and one end of the monitoring compression spring 35 abuts against the first connecting seat 37, and the other end abuts against the second connecting seat 38.

[0042] As a preferred embodiment, a buffer ring 39 is mounted on the screw section of the monitoring bolt 36. The buffer ring 39 is located between the first connecting seat 37 and the bolt head of the monitoring bolt 36. The buffer ring 39 is made of rubber material and can reduce the impact force of the first connecting seat 37 on the bolt head of the monitoring bolt 36.

[0043] As a preferred embodiment, the mounting base 31 is height-adjustably matched on the brake base 24. For example, a brake adjustment base 28 is disposed at the bottom of the brake base 24, a first oblong hole 281 is disposed on one side of the brake adjustment base 28, the length direction of the first oblong hole 281 extends in the vertical direction, mounting screw holes 311 are disposed on the mounting base 31, each mounting screw hole 311 corresponds to one mounting screw hole 311, and mounting bolts 282 threadedly matched in the mounting screw holes 311 are inserted through the first oblong holes 281. After loosening the mounting bolts 282, the height position of the mounting base 31 can be adjusted, so that the detection roller 41 can stably roll and contact the brake wheel 22.

[0044] As a preferred embodiment, in order to prevent the mounting base 31 from sliding downward due to the vibration of the elevator traction machine 2, a convex tooth groove 283 is provided on one side surface of the brake adjustment base 28, and the convex tooth groove 283 extends in the vertical direction and passes through the upper and lower ends of the brake adjustment base 28. A plurality of limiting convex teeth 284 arranged from top to bottom are raised on the bottom surface of the groove of the convex tooth groove 283, and the limiting convex teeth 284 extend in the front-to-back direction, and a limiting groove is formed between the upper and lower adjacent limiting convex teeth 284; a plurality of matching convex teeth 312 arranged from top to bottom are provided on the mounting base 31, and at least one of the matching convex teeth 312 is matched in one of the limiting grooves. The matching convex teeth 312 and the limiting convex teeth 284 cooperate with each other to increase the friction between the mounting base 31 and the brake adjustment base 28, so that the mounting base 31 is not easily displaced downward.

[0045] As a preferred embodiment, two rope blocking assemblies 7 are provided on the bottom of the brake base 24 for preventing the wire rope from slipping off the traction wheel 23. The two rope blocking assemblies 7 are arranged symmetrically between the left and right sides. The rope blocking assembly 7 includes a rope blocking installation shaft 71, a rope blocking member 72, and a rope blocking monitoring module 73. The middle part of the rope blocking member 72 is installed on the brake base 24 using the rope blocking installation shaft 71, and the rope blocking member 72 can rotate around the rope blocking installation shaft 71.

[0046] Furthermore, a rope blocking arm 721 for blocking the steel wire rope is provided at the lower end of the rope blocking member 72. The length of the rope blocking arm 721 extends along the axial direction of the traction wheel 23. The rope blocking arm 721 blocks the outer peripheral surface of the traction wheel 23, thereby preventing the steel wire rope from escaping from the rope groove of the traction wheel 23.

[0047] Furthermore, the brake base 24 is provided with a rope-blocking rotation limiting structure for limiting the rotation angle of the rope-blocking member 72 so that the rope-blocking arm 721 is always in a position capable of blocking the steel wire rope, and a rope-blocking resetting structure for keeping the rope-blocking member 72 at the original angle position when the rope-blocking member 72 is not in contact with the steel wire rope, and the rope-blocking rotation limiting structure and the rope-blocking resetting structure both correspond to the upper end of the rope-blocking member 72;

[0048] Furthermore, the rope stop monitoring module 73 is installed on the brake base 24, and the detection end of the rope stop monitoring module 73 corresponds to the upper end of the rope stop member 72, so that when the rope stop member 72 is rotated and swung by the wire rope, the upper end of the rope stop member 72 can press and trigger the detection end of the rope stop monitoring module 73, so that the rope stop monitoring module 73 can send out a rope stop signal; the rope stop monitoring module 73 is communicatively connected to the monitoring and control module 5, and the monitoring and control module 5 is communicatively connected to the elevator control cabinet 1, and the monitoring and control module 5 receives the rope stop signal, and then the monitoring and control module 5 sends out a rope stop alarm signal to the elevator control cabinet 1 according to the rope stop signal, and the elevator control cabinet 1 stops the elevator car accordingly and sends out an alarm to the outside world.

[0049] When the rope blocking arm 721 of the rope blocking member 72 is hit by the wire rope and the rope blocking member 72 is linked to rotate and swing as a whole, the upper end of the rope blocking member 72 presses on the detection end of the trigger rope blocking monitoring module 73, so that the rope blocking monitoring module 73 can send a rope blocking signal to the monitoring control module 5. The monitoring control module 5 sends a rope blocking alarm signal to the elevator control cabinet 1 according to the rope blocking signal sent by the rope blocking monitoring module 73. This structure directly uses the rope blocking member 72 to trigger the rope blocking monitoring module 73 when blocking the rope, which effectively simplifies the components required to realize the rope blocking monitoring function and achieves the purpose of reducing the production cost. In addition, since the rope blocking member 72 directly triggers the rope blocking monitoring module 73 when blocking the rope, the outside world can be informed in time that the elevator has a situation where the wire rope wants to slip off the traction wheel 23, so that the maintenance workers can be informed in time of the abnormality of the wire rope on the elevator traction machine 2 and arrive at the scene in time to troubleshoot, thereby ensuring the safety of the elevator and reducing the occurrence of elevator accidents.

[0050] As a preferred embodiment, the rope-stopping rotation limiting structure includes a rope-stopping limiting groove 241 provided on the brake base 24, wherein a maximum rope-stopping angle limiting surface 242 and a minimum rope-stopping angle limiting surface 243 are provided in the rope-stopping limiting groove 241, and the upper end of the rope-stopping member 72 extends into the rope-stopping limiting groove 241 and is located between the maximum rope-stopping angle limiting surface 242 and the minimum rope-stopping angle limiting surface 243, and a rope-stopping swinging space is reserved between the maximum rope-stopping angle limiting surface 242 and the minimum rope-stopping angle limiting surface 243 for the upper end of the rope-stopping member 72 to swing. dynamic space; wherein, when the wire rope collides with the rope stop arm 721, the rope stop member 72 rotates around the rope stop mounting shaft 71 along the first rope stop rotation direction, so that the upper end of the rope stop member 72 rotates and swings synchronously until the upper end of the rope stop member 72 abuts against the maximum rope stop angle limit surface 242. When the rope stop member 72 abuts against the maximum rope stop angle limit surface 242, the maximum distance between the rope stop arm 721 and the outer peripheral surface of the traction wheel 23 is not greater than R1, wherein R1 is the radius of the wire rope, and the wire rope is not easy to escape from the rope groove of the traction wheel 23.

[0051] Furthermore, the rope stopping resetting structure includes a rope stopping compression spring 74, and the rope stopping compression spring 74 is arranged in the rope stopping limiting groove 241, one end of the rope stopping compression spring 74 is engaged with the brake base 24, and the other end is engaged with the upper end of the rope stopping member 72. When the rope stopping arm 721 is not contacted by the wire rope, the upper end of the rope stopping member 72 is always kept in contact with the minimum rope stopping angle limiting surface 243 by the action of the rope stopping compression spring 74, so that the rope stopping member 72 is kept in the original angular position; when the rope stopping member 72 rotates along the first rope stopping direction After it swings forward and the wire rope no longer abuts the rope stop member 72, the rope stop compression spring 74 can drive the rope stop member 72 to rotate and reset along the second rope stop rotation direction, so that the rope stop member 72 is reset to a state of abutting against the minimum rope stop angle limit surface 243; when the upper end of the rope stop member 72 abuts against the minimum rope stop angle limit surface 243, the minimum distance between the rope stop arm 721 and the outer peripheral surface of the traction wheel 23 is less than R1 and greater than 0.35*R1, thereby ensuring that the rope stop arm 721 will not contact the surface of the traction wheel 23 and cause friction damage.

[0052] Furthermore, a first rope-stopping spring groove is provided at the upper end of the rope-stopping member 72, and a second rope-stopping spring groove is provided on the maximum rope-stopping angle limiting surface 242. One end of the rope-stopping spring 74 is engaged in the first rope-stopping spring groove, and the other end is engaged in the second rope-stopping spring groove, so that the rope-stopping spring 74 is positioned and installed.

[0053] Furthermore, since the maximum rope-stopping angle limiting surface 242 and the minimum rope-stopping angle limiting surface 243 need to limit the rotation angle of the rope-stopping member 72, the space formed between the maximum rope-stopping angle limiting surface 242 and the minimum rope-stopping angle limiting surface 243 is small, resulting in that it is not easy to directly install the rope-stopping compression spring 74 in the rope-stopping limiting groove 241. For the convenience of installation, one end of the second rope-stopping compression spring groove passes through the outer side surface of the brake base 24 along the left-right direction, and the second rope-stopping compression spring groove is a screw hole. The inner thread of the second rope-stopping compression spring groove is equipped with a rope-stopping top screw 75, and the other end of the rope-stopping compression spring 74 is against the rope-stopping top screw 75; during installation, the rope-stopping compression spring The outer side surface of the brake base 24 is inserted into the second rope stop spring groove, and then the rope stop screw 75 is screwed into the second rope stop spring groove. As the rope stop spring 74 moves toward the rope stop member 72, one end of the rope stop spring 74 extends out from the other end of the second rope stop spring groove and fits into the first rope stop spring groove on the rope stop member 72 in the rope stop limiting groove 241, thereby completing the installation of the rope stop spring 74. At the same time, by twisting the rope stop screw 75 to change the position of the rope stop screw 75 in the second rope stop spring groove, the elastic force of the rope stop spring 74 acting on the rope stop member 72 can also be adjusted, so as to control the elastic force of the rope stop spring 74 to drive the rope stop member 72 to return to its original position as needed.

[0054] As a preferred embodiment, the rope blocking monitoring module 73 adopts a micro switch installed on the brake base 24. For example, a brake avoidance groove 240 is provided in the middle of the bottom of the brake base 24, and a rope blocking monitoring slot hole 244 connected to the rope blocking limit slot 241 is provided on the groove wall of the brake avoidance groove 240. The rope blocking monitoring module 73 is installed in the rope blocking monitoring slot hole 244 and locked in position by fasteners.

[0055] As a preferred embodiment, the rope blocking installation shaft 71 is arranged in the rope blocking limit groove 241, the lower end of the rope blocking limit groove 241 passes through the bottom surface of the brake base 24, and the upper end of the rope blocking member 72 extends from the bottom opening of the rope blocking limit groove 241 into the rope blocking limit groove 241; the front end of the rope blocking limit groove 241 passes through the front side surface of the brake base 24, and the front end of the brake base 24 is installed with a rope blocking support seat 76 that closes the front end opening of the rope blocking limit groove 241, and the rear end surface of the rope blocking support seat 76 is provided with a first rope blocking axis hole, and the rear groove surface of the rope blocking limit groove 241 is provided with a second rope blocking axis hole corresponding to the first rope blocking axis hole, the front end of the rope blocking installation shaft 71 is adapted in the first rope blocking axis hole, and the rear end is adapted in the second rope blocking axis hole. The above structure supports both ends of the rope blocking installation shaft 71, thereby ensuring the installation stability of the rope blocking installation shaft 71.

[0056] As a preferred embodiment, the monitoring and control module 5 is connected to a current and voltage monitoring module, and the current and voltage monitoring module includes a current monitoring module 531, a voltage monitoring module 532 and a power data processing module. The current monitoring module 531 and the voltage monitoring module 532 are both connected to the power supply of the elevator traction machine 2. The power data processing module includes a power analysis module 533 for determining whether the current and voltage of the elevator traction machine 2 are abnormal, a power monitoring and counting module 534 for recording the number of current and voltage abnormalities, and a power data storage module 535 for storing a mild voltage threshold, a severe voltage threshold, a mild current threshold and a severe current threshold. The power analysis module 533 is electrically connected to the current monitoring module 531, the voltage monitoring module 532, the power data storage module 535, the power monitoring and counting module 534 and the monitoring and control module 5.

[0057] When working, the current monitoring module 531 and the voltage monitoring module 532 transmit the current data and voltage data of the elevator traction machine 2 to the power analysis module 533. When the power analysis module 533 determines that the monitored current data of the elevator traction machine 2 exceeds the light current threshold and does not exceed the heavy current threshold, it is determined that the current data of the elevator traction machine 2 is slightly abnormal, and the power monitoring counting module 534 records a light current abnormality.

[0058] When the number of mild current anomalies recorded by the power monitoring and counting module 534 is greater than or equal to the current recording threshold, the power monitoring and counting module 534 sends a current recording alarm signal to the power analysis module 533, and the power analysis module 533 generates a current accumulation abnormality alarm signal and sends it to the monitoring and control module 5, which is then sent by the monitoring and control module 5 to the elevator control cabinet 1, and the elevator control cabinet 1 automatically controls the motor and the brake to stop the elevator accordingly;

[0059] When the power supply analysis module 533 determines that the monitored current data of the elevator traction machine 2 exceeds the severe current threshold, the power supply analysis module 533 generates a severe current abnormality alarm signal and sends it to the monitoring and control module 5, which is then sent by the monitoring and control module 5 to the elevator control cabinet 1. The elevator control cabinet 1 automatically controls the motor and brake to stop the elevator.

[0060] When the power supply analysis module 533 determines that the monitored voltage data of the elevator traction machine 2 exceeds the slight voltage threshold and does not exceed the severe voltage threshold, it is determined that the voltage data of the current elevator traction machine 2 is slightly abnormal, and the power supply monitoring and counting module 534 records a slight voltage abnormality;

[0061] When the number of minor voltage anomalies recorded by the power monitoring and counting module 534 is greater than or equal to the voltage record threshold, the power monitoring and counting module 534 sends a voltage record alarm signal to the power analysis module 533, and the power analysis module 533 generates a voltage cumulative abnormality alarm signal and sends it to the monitoring and control module 5, which is then sent by the monitoring and control module 5 to the elevator control cabinet 1, and the elevator control cabinet 1 automatically controls the motor and brake to stop the elevator accordingly;

[0062] When the power supply analysis module 533 determines that the monitored voltage data of the elevator traction machine 2 exceeds the severe voltage threshold, the power supply analysis module 533 generates a severe voltage abnormality alarm signal and sends it to the monitoring and control module 5, which is then sent by the monitoring and control module 5 to the elevator control cabinet 1. The elevator control cabinet 1 automatically controls the motor and brake to stop the elevator.

[0063] In addition, when the sum of the number of mild voltage anomalies recorded by the power monitoring and counting module 534 and the number of mild voltage anomalies is greater than or equal to the total record threshold, the power monitoring and counting module 534 sends a total record alarm signal to the power analysis module 533, and the power analysis module 533 generates a total abnormality alarm signal and sends it to the monitoring and control module 5, which is then sent by the monitoring and control module 5 to the elevator control cabinet 1. The elevator control cabinet 1 automatically controls the motor and brake to stop the elevator. The values ​​of the total record threshold, current record threshold and voltage record threshold are all the same.

[0064] As a preferred embodiment, the power analysis module 533 is electrically connected to a manual zeroing switch 536 for allowing a maintenance worker to manually clear all records in the power monitoring and counting module 534. The number of times recorded in the power monitoring and counting module 534 cannot be cleared remotely, and can only be cleared after the maintenance worker arrives at the elevator site and presses the manual zeroing switch 536, thereby ensuring that the maintenance worker actually arrives at the site to perform maintenance and repair on the elevator traction machine 2.

[0065] As a preferred embodiment, the monitoring and control module 5 is connected to an energy consumption detection server for analyzing the operating energy consumption status of the elevator traction machine 2. The energy consumption detection server is electrically connected to the current monitoring module 531 and the voltage monitoring module 532. The energy consumption detection server analyzes the operating energy consumption status of the elevator traction machine 2, and then uses the monitoring and control module 5 to cooperate with the wireless communication module 52 to send it to the remote service platform 10, so that the elevator manufacturer can understand the operating power consumption of the elevator traction machine 2 in a timely manner.

[0066] As a preferred embodiment, the monitoring and control module 5 is connected to an environmental monitoring module 8, and the environmental monitoring module 8 includes a noise monitoring module 81, a vibration monitoring module 82 and an environmental monitoring box 83. The environmental monitoring box 83 is installed on the motor body 21 on the elevator traction machine 2. The environmental monitoring box 83 is provided with a noise monitoring position and a vibration monitoring position. The noise monitoring module 81 is installed on the noise monitoring position, and the vibration monitoring module 82 is installed in the vibration monitoring position. The noise monitoring module 81 and the vibration monitoring module 82 are jointly connected to an environmental monitoring analysis module 84 for judging whether the operating noise and vibration of the elevator traction machine 2 are abnormal after receiving the vibration monitoring data. The environmental monitoring analysis module 84 is electrically connected to an environmental monitoring storage module 85, and the environmental monitoring storage module 85 is used to store noise thresholds, vibration thresholds and temperature thresholds. The environmental monitoring analysis module 84 is communicatively connected to the monitoring and control module 5, and the monitoring and control module 5 is communicatively connected to the elevator control cabinet 1.

[0067] The environmental monitoring module 8 of the present invention includes a noise monitoring module 81 and a vibration monitoring module 82. The technical solution utilizes the noise monitoring module 81 and the vibration monitoring module 82 to monitor vibration and noise respectively and send the monitoring data to the environmental monitoring analysis module 84, so that the environmental monitoring analysis module 84 can first determine whether the noise monitoring data monitored by the noise monitoring module 81 is valid according to whether the vibration monitoring data is received. If the vibration monitoring data is received, the environmental monitoring analysis module 84 determines whether the operating noise and vibration of the elevator traction machine 2 are abnormal according to the received vibration monitoring data and noise monitoring data. Therefore, the technical solution utilizes the additional vibration monitoring module 82 to ensure the validity of the noise monitoring data, avoids the elevator traction machine 2 being misjudged as a fault, and effectively ensures the safe operation of the elevator.

[0068] As a preferred embodiment, the environmental monitoring module 8 also includes a temperature sensor 86 for monitoring the temperature of the elevator traction machine 2. The temperature sensor 86 is connected to the environmental monitoring and analysis module 84. When the temperature of the elevator traction machine 2 exceeds the temperature threshold, the environmental monitoring and analysis module 84 determines that the elevator traction machine 2 is abnormal and sends a temperature alarm signal to the monitoring and control module 5.

[0069] Further, a temperature monitoring hole 211 is provided on the motor body 21 of the elevator traction machine 2, and the temperature sensor 86 is installed on the motor body 21, and the detection end of the temperature sensor 86 is inserted into the temperature monitoring hole 211. In this embodiment, the temperature monitoring hole 211 is located on the top surface of the motor body 21, the axial direction of the temperature monitoring hole 211 is vertically arranged, the upper end of the temperature monitoring hole 211 passes through the top surface of the motor body 21, the upper end of the temperature monitoring hole 211 is provided with a temperature monitoring screw hole, and the temperature sensor 86 body of the temperature sensor 86 is provided with a temperature sensor threaded section that is threadedly matched with the temperature monitoring screw hole, so that the temperature sensor 86 is installed on the motor body 21 by threaded connection.

[0070] Furthermore, the temperature sensor 86 is a contact temperature sensor 86, and a heat-conducting medium is provided between the hole wall of the temperature monitoring hole 211 and the outer peripheral surface of the detection end of the temperature sensor 86, and the heat-conducting medium is conducive to better transfer of the temperature of the elevator traction machine 2 to the temperature sensor 86. The heat-conducting medium is a heat-conducting silica gel 871. During installation, the liquid heat-conducting silica gel 871 is first filled into the temperature monitoring hole 211, and then the detection end of the temperature sensor 86 is inserted into the temperature monitoring hole 211 and the heat-conducting silica gel 871 is filled into the gap between the hole wall of the temperature monitoring hole 211 and the outer peripheral surface of the detection end of the temperature sensor 86. After the liquid heat-conducting silica gel 871 is cured, the detection end of the temperature sensor 86 is bonded and fixed in the temperature monitoring hole 211, thereby improving the installation temperature resistance of the temperature sensor 86; at the same time, the heat-conducting silica gel 871 also has good thermal conductivity, so that the temperature of the elevator traction machine 2 is better transferred to the detection end of the temperature sensor 86, thereby reducing the detection error of the temperature sensor 86.

[0071] As a preferred embodiment, the motor body 21 is provided with a backup brake device 9 for braking the brake wheel 22 when the brake state monitoring module 4 detects that the brake wheel 22 is not effectively stopped, and the backup brake device 9 is connected and controlled by the monitoring control module 5. The backup brake device 9 includes a backup brake shoe 91 located directly below the brake wheel 22 and a backup drive device 92 for driving the backup brake shoe 91 to stop the brake wheel 22, and the backup drive device 92 is installed on the motor body 21.

[0072] Furthermore, the backup brake device 9 also includes a backup guide base 93 for guiding the lifting of the backup brake shoe 91, and a backup brake guide rod 94 is respectively provided at the left and right ends of the bottom of the backup guide base 93, and the backup brake guide rod 94 vertically slides and inserts into the vertical guide hole provided on the motor body 21, and the two backup brake guide rods 94 are both vertically arranged, and the two backup brake guide rods 94 are respectively located on the left and right sides of the backup drive device 92, and the backup brake guide rod 94 can slide vertically relative to the motor body 21; the backup drive device 92 can be an electric cylinder, and the backup drive device 9 2 is connected and controlled by the monitoring control module 5, the action output end of the standby driving device 92 is connected to the bottom of the standby guide base 93, the standby brake shoe 91 is located above the standby guide base 93, and the upper part of the standby brake shoe 91 is provided with a braking concave arc surface 911 for matching with the outer peripheral surface of the brake wheel 22, and the braking concave arc surface 911 is set to be concave downward, and the braking concave arc surface 911 can be adapted to the outer peripheral surface of the brake wheel 22, so that the standby brake shoe 91 and the outer peripheral surface of the brake wheel 22 have a larger contact area, thereby ensuring the friction between the two, so that the standby brake shoe 91 can quickly and effectively stop the brake.

[0073] In order to avoid installation errors which may cause the brake concave arc surface 911 on the spare brake shoe 91 to not match the brake wheel 22 well, the bottom center of the spare brake shoe 91 is hinged to the spare guide base 93 using a spare installation axis 95. The spare brake shoe 91 can rotate and swing left and right with the spare installation axis 95 as the rotation center, so that the spare brake shoe 91 can freely rotate and swing to adjust the angle during the process of cooperating with the brake wheel 22, so that the brake concave arc surface 911 can fit the outer circumferential surface of the brake wheel 22 as completely as possible.

[0074] As a preferred embodiment, since the spare brake shoe 91 and the spare guide base 93 are hinged, it is easy for a large height difference between the left and right ends of the spare brake shoe 91 to occur, thereby affecting the cooperation between the spare brake shoe 91 and the brake wheel 22. In serious cases, the left or right end of the spare brake shoe 91 may continuously collide with the spare guide base 93 due to vibration, affecting their service life. Pad support compression springs 96 are provided at the left and right ends of the top of the spare guide base 93. The two pad support compression springs 96 correspond to the left and right ends of the bottom of the spare brake shoe 91 respectively. The upper end of the pad support compression spring 96 is connected to the bottom of the spare brake shoe 91, and the lower end is connected to the top of the spare guide base 93. The two pad support compression springs 96 are used to support the left and right ends of the spare brake shoe 91 respectively. The pad support compression spring 96 supports the spare brake shoe 91, thereby preventing problems caused by the large height difference between the left and right ends of the spare brake shoe 91.

[0075] As a preferred embodiment, the monitoring and control module 5 is connected to a power supply circuit module 54, and the power supply circuit module 54 is used for power supply. The power supply circuit module 54 is connected to the elevator power supply system to access the power supply. In addition, the power supply circuit module 54 is also electrically connected to a backup battery 55. When the elevator power system fails and no longer supplies power to the power supply circuit module 54, the power supply circuit module 54 automatically switches to the backup battery 55 to supply power to the monitoring and control module 5 and various functional modules connected to the monitoring and control module 5, thereby ensuring the implementation of various functional modules of the monitoring and control module 5 when the elevator power system fails, and ensuring the safety of the elevator.

[0076] As a preferred embodiment, the monitoring and control module 5 is also electrically connected to a wired communication module 51 and a wireless communication module 52. The wired communication module 51 is used to connect the elevator control cabinet 1 and each monitoring module, so that the monitoring and control module 5 can send a corresponding alarm signal to the elevator control cabinet 1, and the monitoring signal of each monitoring module can be sent to the monitoring and control module 5; the wireless communication module 52 is connected to the remote service platform 10 through the Internet. The remote service platform 10 is the monitoring platform of the elevator manufacturer. Remote parameter uploading and alarm are realized through the wireless communication module 52, which makes elevator troubleshooting more timely and safer.

[0077] As a preferred embodiment, the remote service platform 10 is connected to a manufacturer alarm 11. After receiving the alarm signal, the remote service platform 10 can use the manufacturer alarm 11 to send an alarm to the staff of the elevator manufacturer, which is beneficial for the staff of the elevator manufacturer to timely understand the alarm status of the elevator. Furthermore, the remote service platform 10 is connected to the owner-side APP 12 and the maintenance-side APP 13, wherein the owner-side APP 12 is used to receive the alarm signal for the owner. After the owner learns about the relevant signal through the owner-side APP 12, he can choose another elevator to travel; the maintenance-side APP 13 is used to receive the alarm signal for the maintenance worker, so that the maintenance worker can understand the alarm and then quickly arrive at the scene to handle the elevator with the fault alarm.

[0078] As a preferred embodiment, the elevator control cabinet 1 is communicatively connected to a property monitoring platform 14, and the property staff of the property company can use the property monitoring platform 14 to receive the alarm signal sent by the elevator control cabinet 1. In addition, the property monitoring platform 14 is connected to a property alarm 15, which is convenient for the property staff to understand the alarm status in time and take relevant countermeasures immediately.

[0079] As a preferred embodiment, the elevator control cabinet 1 is connected to a human infrared sensor 16 for detecting whether there are passengers in the elevator car.

[0080] In order to fully disclose the application scenarios of the elevator traction machine brake monitoring device, this embodiment also discloses an application method of the elevator traction machine brake monitoring device, which includes the following steps:

[0081] Step 1, using the monitoring control module 5 to monitor the elevator using the encoder 42, the rope monitoring module 73, the environment monitoring module 8 and the current and voltage monitoring module;

[0082] Among them, when the elevator control cabinet 1 controls the braking mechanism 25 to perform a braking action on the brake wheel 22 and is monitored by the in-place monitoring switch 271, the in-place monitoring switch 271 sends the monitoring data to the monitoring control module 5. After receiving the signal monitored by the in-place monitoring switch 271, the monitoring control module 5 starts to use the braking state monitoring module 4 to monitor whether the brake wheel 22 is still rotating. If the brake wheel 22 is still rotating by an amplitude exceeding a preset threshold, the monitoring control module 5 determines that an abnormal fault occurs in the brake and forms a braking abnormality alarm signal, and jumps to operation step 3 after sending the alarm signal to the elevator control cabinet 1; if the rotation of the brake wheel 22 does not exceed the amplitude of the preset threshold, no alarm is given and step 3 is not executed;

[0083] When the monitoring control module 5 obtains one or more alarm signals from the rope blocking monitoring module 73, the environmental monitoring and analysis module 84, the power supply analysis module 533 and other modules, the monitoring control module 5 executes step 2 after sending these alarm signals to the elevator control cabinet 1; if the monitoring control module 5 does not obtain any alarm signal, no alarm is issued and step 2 is not executed;

[0084] Step 2, after the elevator control cabinet 1 receives the alarm signal, it sends the alarm signal to the property monitoring platform 14, so that the property staff can understand the alarm status in time and take relevant countermeasures immediately; at the same time, the human infrared sensor 16 is used to detect whether there are passengers in the elevator car;

[0085] If there are passengers, the elevator control cabinet 1 controls the elevator car to transport the passengers to the nearest floor station and brakes the elevator car to level the floor at the nearest floor station, then opens the elevator door to allow the passengers to walk out of the elevator car by themselves, and then shuts down the elevator after there are no passengers in the elevator car to prevent passengers from being trapped in the elevator;

[0086] If there are no passengers, the elevator control cabinet 1 controls the brake to brake the elevator car to stop running immediately, thereby improving the safety of the elevator;

[0087] If during the execution of step 2, the monitoring and control module 5 determines that the brake has an abnormal fault and generates a braking abnormality alarm signal, then step 3 is executed after sending the alarm signal to the elevator control cabinet 1; if the rotation of the brake wheel 22 does not exceed the preset threshold, step 3 is not executed, and then the monitoring and control module 5 sends all the alarm signals received during the entire process of step 2 to the remote service platform 10, which is beneficial for the staff of the elevator manufacturer to timely understand the alarm status of the elevator, and the remote service platform 10 sends the received alarm signal to the owner-side APP 12 and the maintenance-side APP 13, so that the owner can choose other elevators to travel after understanding the relevant signals through the owner-side APP 12 and let the maintenance workers understand the alarm and quickly arrive at the scene to deal with the elevator with the fault alarm;

[0088] Step 3, first, the monitoring and control module 5 controls the spare drive device 92 to control the spare brake shoe 91 to move toward the brake wheel 22 according to the brake abnormality alarm signal so that the spare brake shoe 91 slowly presses against the brake wheel 22, until the brake wheel 22 stops rotating and the encoder 42 stops outputting the monitoring signal to the monitoring and control module 5, the monitoring and control module 5 controls the spare drive device 92 to stop running, completes the braking action of the brake wheel 22 after the brake failure, completes the braking of the motor, so that the elevator car is no longer driven by the elevator traction machine to run, and ensures the safety of the elevator operation; at the same time, after receiving the alarm signal, the elevator control cabinet 1 uses the human infrared sensor 16 to detect whether there are passengers in the elevator car; if there are no passengers, the elevator control cabinet 1 does not feedback the trapped alarm signal; if there are passengers, the elevator control cabinet 1 sends an alarm signal to the monitoring and control module 5 and the property monitoring platform 14 to send a trapped alarm signal, wherein the property monitoring platform 14 can notify the property staff so that the property staff can arrive at the scene in time for processing;

[0089] The monitoring and control module 5 sends all alarm signals to the remote service platform 10, which is beneficial for the staff of the elevator manufacturer to understand the alarm status of the elevator in time, and the remote service platform 10 sends the received alarm signals to the owner-side APP 12 and the maintenance-side APP 13, so that the owner can choose other elevators to travel after understanding the relevant signals through the owner-side APP 12 and let the maintenance workers understand the alarm and quickly arrive at the scene to deal with the elevator with fault alarm, thereby improving the safety of the elevator.

[0090] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means shall fall within the protection scope of the present invention.

Claims

1. An elevator traction machine brake monitoring device, comprising an elevator control cabinet (1), an elevator traction machine (2), the elevator traction machine (2) comprising a motor, a brake wheel (22), a traction wheel (23) and a brake, the brake comprising a brake base (24), a brake mechanism (25) and an electromagnet device (26), the brake base (24) and the brake mechanism (25) are both mounted on a motor body (21) of the motor, the electromagnet device (26) is mounted on the brake base (24) and is in transmission cooperation with the brake mechanism (25), the electromagnet device (26) and the motor are both connected and controlled by the elevator control cabinet (1); characterized in that: The brake base (24) is provided with a mounting assembly (3), and a brake state monitoring module (4) is mounted on the mounting assembly (3) for detecting the rotation of the brake wheel (22) after the brake mechanism (25) performs a braking action on the brake wheel (22). The brake state monitoring module (4) is communicatively connected to a monitoring control module (5) for sending a detection result to the elevator control cabinet (1) according to a monitoring signal of the brake state monitoring module (4), and the monitoring control module (5) is communicatively connected to the elevator control cabinet (1).

2. The elevator traction machine brake monitoring device according to claim 1, characterized in that: The brake base (24) is provided with a brake in-place monitoring component (27) for judging whether the brake arm (251) is in the brake in-place when performing a braking action, and each of the brake in-place monitoring components (27) corresponds to a brake arm (251) of the brake mechanism (25).

3. The elevator traction machine brake monitoring device according to claim 2, characterized in that: The brake in-position monitoring assembly (27) comprises an in-position monitoring switch (271) and a brake monitoring base (272); the brake monitoring base (272) is mounted on a brake base (24); and the in-position monitoring switch (271) is mounted on the brake monitoring base (272).

4. An elevator traction machine brake monitoring device according to claim 3, characterized in that: The in-place monitoring switch (271) is also communicatively connected to the monitoring control module (5).

5. An elevator traction machine brake monitoring device according to any one of claims 1 to 4, characterized in that: The braking state monitoring module (4) comprises a detection shaft, a detection roller (41) and an encoder (42); the detection roller (41) is rotatably mounted on the mounting assembly (3) via the detection shaft, and the detection shaft is driven to rotate synchronously by the detection roller (41); a detection ring (221) is provided on the outer peripheral surface of the brake wheel (22) to rotate synchronously therewith, and the detection ring (221) is coaxially arranged with the brake wheel (22); the roller surface of the detection roller (41) rolls on the outer peripheral surface of the detection ring (221), and the detection roller (41) can drive the detection shaft to rotate when it is driven to rotate by the detection ring (221); the encoder (42) is mounted on the mounting assembly (3), and the detection shaft of the encoder (42) is connected to the detection shaft.

6. An elevator traction machine brake monitoring device according to claim 5, characterized in that: The mounting assembly (3) comprises a mounting base (31) and two movable swing arms (32); the mounting base (31) is mounted on a brake base (24); the two movable swing arms (32) are symmetrically arranged front and rear and one end of each is disposed on the mounting base (31); the detection roller (41) is located between the other ends of the two movable swing arms (32); the two ends of the detection shaft are respectively rotatably matched with the other ends of the two movable swing arms (32); and the encoder (42) is mounted on one of the movable swing arms (32).

7. An elevator traction machine brake monitoring device according to claim 6, characterized in that: One end of the two movable swing arms (32) is rotatably mounted on the mounting base (31) using the same swing mounting shaft (33); a spacer (34) is mounted on the swing mounting shaft (33); opposite ends of the spacer (34) are respectively fixedly connected to the two movable swing arms (32); and an elastic support component is arranged between the middle part of each movable swing arm (32) and the mounting base (31) to enable the detection roller (41) to always maintain rolling contact with the detection ring (221).

8. An elevator traction machine brake monitoring device according to claim 7, characterized in that: The elastic support assembly comprises a monitoring compression spring (35), a monitoring bolt (36), a first connecting seat (37) and a second connecting seat (38), wherein the first connecting seat (37) is rotatably mounted on the middle part of the movable swing arm (32); the second connecting seat (38) is rotatably mounted on the mounting base (31), and the screw section of the monitoring bolt (36) passes through the connecting through hole of the first connecting seat (37) and is threadedly engaged in the connecting screw hole of the second connecting seat (38); the monitoring compression spring (35) is sleeved on the screw section of the monitoring bolt (36), and one end of the monitoring compression spring (35) abuts against the first connecting seat (37), and the other end abuts against the second connecting seat (38).

9. An elevator traction machine brake monitoring device according to claim 8, characterized in that: A buffer ring (39) is sleeved on the screw section of the monitoring bolt (36); the buffer ring (39) is located between the first connecting seat (37) and the bolt head of the monitoring bolt (36); the buffer ring (39) is made of rubber.

10. An elevator traction machine brake monitoring device according to claim 6, characterized in that: The mounting base (31) is matched on the brake base (24) in a height-adjustable manner.

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