Integrated permanent magnet cylinder

Abstract

An integrated permanent magnet roller comprises a permanent magnet roller, a torque limiting mechanism and a backstop mechanism, a brake mechanism, a hydraulic system and a monitoring device and a brake torque monitoring device, characterized in that the brake mechanism, the torque limiting mechanism and the backstop mechanism are directly connected with the permanent magnet roller to form an integrated compact structure; the torque limiting mechanism and the backstop mechanism integrated structure A and the brake mechanism B are respectively connected with a fixed shaft through a torque limiting outer tooth hollow shaft and an outer tooth hollow shaft to form an integrated compact structure. Through integrated arrangement, the application realizes controllable setting of the backstop torque of the backstop mechanism in a mechanical and hydraulic control mode, saves the installation space through flexible arrangement of the installation positions of the torque limiting mechanism, the backstop mechanism and the brake mechanism, improves the assembly precision and reduces the installation workload.

Description

TECHNICAL FIELD

[0001] The application relates to a belt conveyor driving, braking and backstop integrated device, in particular to an integrated permanent magnet roller with a wet friction braking mechanism and a torque-limited backstop mechanism. BACKGROUND

[0002] The belt conveyor is widely used in the bulk material conveying field of coal, cement and electricity, and has the characteristics of continuous conveying, high efficiency, energy saving and environmental protection. The driving part, the braking part and the backstop part are the core components of the belt conveyor. However, they are independent functional units and need to be assembled on site by the user after the single product is used with the conveyor, which causes a complex system, scattered arrangement, large volume and large occupation. In the narrow space field of coal mine underground, the installation and use are limited. In addition, the system is assembled by separate components on site, and the assembly precision is low, which causes large system vibration and noise, low system integration, lack of efficient fusion of each component, high failure rate, low system reliability and short equipment service life.

[0003] The permanent magnet roller is a new driving device. The fixed shaft is fixed and the cylinder skin rotates. It cannot be installed with a brake and a backstop on the fixed shaft like a conventional system. The existing technology increases a disc brake on the outer edge of the roller, which causes processing and installation difficulties and poor use effect. At the same time, the brake friction material uses asbestos and other materials, which causes environmental pollution, fast brake shoe wear, frequent adjustment and replacement, and cannot meet the requirements of long-time continuous and reliable braking of the belt conveyor.

[0004] The patent with the application number 201910134937.0 discloses a brake device of a permanent magnet direct drive roller. The structure realized by the patent is a large gear fixedly installed on the roller and a small gear engaged with the large gear. The small gear is fixedly connected with a rotating shaft, and the rotating shaft is provided with a brake. The roller is driven by a belt to drive the small gear to rotate, and the low-speed transmission is changed into high-speed transmission. The brake and the backstop are installed on the high-speed shaft to realize the braking of the permanent magnet direct drive roller. The disadvantage of the patent is that the brake and the backstop are transmitted by the gear and another high-speed shaft, which occupies a large space. The reliability of the open gear transmission is also low. In addition, the brake mode lacks effective monitoring and fault diagnosis method for key state parameters such as braking torque, braking displacement and brake wear, and the intelligent level is low. SUMMARY

[0005] To address the aforementioned issues, the present invention aims to provide an integrated permanent magnet roller that integrates the functions of a drive motor, roller, backstop, and brake. This solves the problem that permanent magnet rollers cannot achieve braking or backstop on inclined belt conveyors, and enables long-term safe braking of belt conveyors. It features high assembly precision, saves installation space, and reduces installation workload. Furthermore, it incorporates comprehensive condition monitoring and fault diagnosis methods, providing big data support for intelligent development, resulting in a more reliable, intelligent, and easier-to-manage and maintain system.

[0006] The objective of this invention is achieved as follows: an integrated permanent magnet roller, comprising a permanent magnet roller, a torque limiting mechanism and a backstop mechanism, a braking mechanism, a hydraulic system and its monitoring device and a braking torque monitoring device, characterized in that the braking mechanism, the torque limiting mechanism and the backstop mechanism are directly connected to the permanent magnet roller to form an integrated compact structure; the integrated combination structure A of the torque limiting mechanism and the backstop mechanism and the braking mechanism B are connected to the permanent magnet roller through a roller end cap with a positioning function; the integrated combination structure A of the torque limiting mechanism and the backstop mechanism and the braking mechanism B are respectively connected to a fixed shaft through a torque limiting external tooth hollow shaft and an external tooth hollow shaft, forming an integrated compact structure.

[0007] The objective of this invention can also be achieved as follows: The torque limiting mechanism includes a torque limiting external toothed hollow shaft, a backstop internal toothed ring, a torque limiting internal friction plate group, a torque limiting external friction plate group, a torque limiting adjusting screw, and a torque limiting pressure sensor; the torque limiting internal friction plate group is embedded on the external teeth of the torque limiting external toothed hollow shaft, and the torque limiting external friction plate group is embedded on the internal teeth of the backstop internal toothed ring; a torque limiting pressure sensor for detecting the pressure between the friction plates is installed between the torque limiting adjusting screw and the torque limiting internal and external friction plate groups; the torque limiting mechanism is connected to the fixed shaft of the permanent magnet drum through the torque limiting external toothed hollow shaft, and the torque is limited by setting the pressure of the friction plate group; the backstop mechanism includes a backstop internal toothed ring, a backstop assembly, a backstop outer ring, and a backstop mechanism end cover shared with the torque limiting mechanism; the backstop mechanism is connected to the drum end cover through the supporting end cover and rotates with the drum; a spacer ring is provided between the drum end cover and the backstop outer ring of the backstop mechanism, and a spacer ring is also provided between the backstop outer ring of the backstop mechanism and the backstop mechanism end cover.

[0008] The brake mechanism comprises an inner tooth friction plate group, an outer tooth friction plate group, and an outer tooth hollow shaft, the outer tooth hollow shaft is sleeved on the fixed shaft and rotates and moves axially with the permanent magnet roller; the brake mechanism front end cover is fixedly connected with the brake mechanism shell-inner tooth ring, the brake mechanism shell-oil cylinder, and the brake mechanism rear end cover; the outer tooth of the outer tooth hollow shaft is embedded with the inner tooth friction plate group, the inner tooth of the brake mechanism shell-inner tooth ring is embedded with the outer tooth friction plate group, and the inner tooth friction plate group and the outer tooth friction plate group are inserted into each other to form a static and dynamic friction pair; the static and dynamic friction pair formed by the inner tooth friction plate group and the outer tooth friction plate group is located in a brake chamber formed by the brake mechanism front end cover, the brake mechanism shell-inner tooth ring, and the piston outer ring end face; the brake mechanism shell-oil cylinder is internally provided with a piston, the piston end face is formed by an outer ring end face, an inner ring end face, and a groove between the outer ring end face and the inner ring end face, the groove is inserted into the middle partition wall of the oil cylinder, and the inner ring end face of the piston extends into the oil cylinder cavity and moves under the pushing of the pressure oil; a plurality of blind holes are formed in the end face opposite to the brake mechanism rear end cover of the piston, disc springs are arranged in the blind holes, guide rods are arranged in the holes of the disc springs, the outer end heads of the guide rods abut against adjusting screws arranged on the brake mechanism end cover, and the adjusting screws are locked by adjusting nuts outside.

[0009] The hydraulic system comprises a hydraulic station, a cooling oil system, and a pressure oil system; the cooling oil system fills cooling oil into the gap between the friction plate groups in the brake chamber through the oil path of the cooling oil system of the hydraulic station, cools the friction plate, returns to the hydraulic station through the cooling oil outlet, and prevents the friction plate from overheating and sparking during braking.

[0010] The pressure oil system fills pressure oil into the oil cylinder cavity through the oil path of the pressure oil system of the hydraulic station, drives the entire piston to reciprocate under the pushing of the pressure oil, and realizes the pressing and release separation between the inner and outer friction plates of the brake mechanism.

[0011] The hydraulic system monitoring device is provided with a cooling oil temperature sensor installed on the cooling oil inlet channel or the oil return channel, which is used for monitoring the temperature of the cooling oil entering the brake chamber and adjusting the oil supply flow rate in time according to the oil temperature change to ensure the cooling effect; and a pressure oil pressure sensor installed on the pressure oil inlet channel, which is used for monitoring the oil pressure change of the pressure oil entering the oil cylinder cavity and adjusting the oil supply pressure in time according to the oil pressure change to ensure the braking effect.

[0012] The brake torque monitoring device is provided with a disc spring pressure sensor at the outer end of the guide rod for monitoring the pressure change of the disc spring in real time, the disc spring pressure sensor converts the electric signal into digital signal and displays the pressure value, and converts the measured pressure value of the disc spring into brake torque value; according to the brake torque value, on the one hand, the setting torque of the assembly torque wrench is determined when the brake mechanism is manufactured and assembled, and on the other hand, the wear degree of the friction plate is analyzed and judged and the remaining service life of the friction plate is predicted in the working state through the monitoring of the disc spring pressure sensor; when the friction plate is worn too much and the brake torque is greatly reduced, the pressure value of the disc spring is uniformly adjusted and calibrated through the adjusting screw to ensure the necessary brake torque value.

[0013] The torque limiting mechanism and the backstop mechanism are installed on the same side of the permanent magnetic drum or are separately installed on the two sides of the permanent magnetic drum.

[0014] The torque limiting mechanism and the backstop mechanism are installed in the drum skin of the permanent magnetic drum or the torque limiting mechanism and the backstop mechanism A are installed outside the drum skin of the permanent magnetic drum.

[0015] The beneficial effects of the present application are:

[0016] 1. The integrated permanent magnetic drum end cover supports and positions the torque limiting mechanism, the backstop mechanism and the brake mechanism, solves the problem that the permanent magnetic drum cannot realize the brake and backstop functions in the traditional way, realizes integration, has smaller volume, higher precision, smaller vibration and higher reliability.

[0017] 2. The displacement monitoring, wear monitoring and higher intelligent degree are realized by detecting and adjusting the pressure between the friction plates of the brake mechanism through the sensing and adjusting mechanism, long-time continuous controllable safe braking is realized, the braking time can reach and exceed 180 seconds, and the heating over-temperature and spark generation are avoided.

[0018] 3. The controllable setting of the backstop torque of the backstop mechanism is realized by the integrated setting of the torque limiting mechanism and the backstop mechanism.

[0019] 4. The installation space is saved, the assembly precision is improved, and the installation workload is reduced by flexibly arranging the installation positions of the torque limiting mechanism, the backstop mechanism and the brake mechanism. DETAILED DESCRIPTION

[0020] Figure 1 is a structure schematic view of an embodiment 1 of the integrated permanent magnetic drum of the present application;

[0021] Figure 2 is a mechanism schematic view of an embodiment 2 of the integrated permanent magnetic drum of the present application;

[0022] Figure 3 is a right view (cross section) of the integrated permanent magnetic drum of the present application;

[0023] Figure 4 yes Figure 1 A partially enlarged view of the connection between the intermediate torque limiting mechanism and the backstop mechanism A and the drum;

[0024] Figure 5 yes Figure 2 A partially enlarged view of the connection between the intermediate torque limiting mechanism and the backstop mechanism A and the drum;

[0025] Figure 6 yes Figure 1 or Figure 2 A partially enlarged view of the connection between the braking mechanism B and the drum; Detailed Implementation

[0026] The present invention will be further described below with reference to specific embodiments, and the advantages and features of the present invention will become clearer as a result. However, these embodiments are merely exemplary and do not constitute any limitation on the scope of the present invention. Those skilled in the art should understand that modifications or substitutions can be made to the details and form of the technical solutions of the present invention without departing from the spirit and scope of the present invention, but all such modifications and substitutions fall within the protection scope of the present invention.

[0027] The diagram shows the following labels: Support 1; Pressure oil connector 2; Cooling oil inlet 3; Adjusting screw 4; Cooling oil outlet 5; Disc spring pressure sensor 6; Braking mechanism rear end cover 7; Housing-internal gear ring 8; Drum shell 9; Braking mechanism front end cover 10; External gear hollow shaft 11; Fixed shaft 12; Guide rod 13; Piston 14; Housing-cylinder 15; Disc spring 16; Internal gear friction plate assembly 17; External gear friction plate assembly 18; Stator 19; External rotor 20; Adjusting nut 21; Torque-limiting external gear hollow shaft 22; Torque-limiting adjusting screw 23; Torque-limiting pressure sensor 24; Torque-limiting internal friction plate assembly 25; Torque-limiting external friction plate assembly 26; Backstop internal gear ring 27; Spacer ring 28; Backstop assembly 29; Backstop mechanism end cover 30; Backstop outer ring 31; Support end cover 32; Drum end cover 33. The torque-limiting mechanism and backstop mechanism combination A, and the braking mechanism B.

[0028] like Figures 1-6 As shown, an integrated permanent magnet drum includes a permanent magnet drum, a torque limiting mechanism, a backstop mechanism, a braking mechanism, a hydraulic system and its monitoring device, and a braking torque monitoring device. The permanent magnet drum includes a stator 19, an outer rotor 20, a drum shell 9, and a fixed shaft 12. The stator 19 is connected to the fixed shaft 12, and the outer rotor 20 is connected to the drum shell 9. The torque limiting mechanism and backstop mechanism are combined A, and the braking mechanism B is connected to the permanent magnet drum through a support end cover 110 with positioning function and a front end cover 10 of the braking mechanism. A and B are connected to the fixed shaft 12 through a torque limiting external tooth hollow shaft 22 and an external tooth hollow shaft 11, forming an integrated compact structure.

[0029] The torque limiting mechanism and freewheel mechanism A and the brake mechanism B can be installed on the same side of the permanent magnet roller, or can be installed separately on both sides of the permanent magnet roller.

[0030] The torque limiting mechanism and freewheel mechanism A is integrated into a structure, including a freewheel outer ring 31, a freewheel assembly (composed of a wedge block, a limit pin shaft and a spring, which is a known technology) 29, a freewheel inner ring 27, a torque limiting inner friction plate group 25, a torque limiting outer friction plate group 26, a torque limiting sensor 24, a torque limiting adjusting screw 23, a torque limiting outer tooth hollow shaft 22, a spacing retainer ring 28, a freewheel mechanism end cover 30, a support end cover 32, the freewheel outer ring 31 is connected with the support end cover 32 and rotates with the permanent magnet roller, the freewheel inner ring 27 is also the outer ring of the torque limiting mechanism. The torque limiting inner tooth friction plate group 25 is embedded on the outer teeth of the torque limiting outer tooth hollow shaft 22, and the torque limiting outer tooth friction plate group 26 is embedded on the inner teeth of the freewheel inner ring 27, and the two groups of friction plate groups are inserted together to form a static and dynamic friction pair.

[0031] When the freewheel outer ring 31 rotates forward, the freewheel assembly 29 is in a free state, and the resistance to the freewheel outer ring 31 is small; when the freewheel outer ring 31 moves reversely, the freewheel assembly 29 simultaneously contacts the freewheel outer ring 31 and the freewheel inner ring 27, and applies a braking force to the freewheel outer ring 31. In this process, the freewheel assembly 29 is in a locking state, which limits the relative movement of the freewheel inner ring 27 and the freewheel outer ring 31, the fixed shaft 12 is connected with the support 1, and the support 1 is fixed on the foundation, which has a freewheel function.

[0032] The brake mechanism B includes an adjusting screw 4, a disc spring pressure sensor 6, a brake mechanism rear end cover 7, a housing-inner ring 8, a brake mechanism front end cover 10, an outer tooth hollow shaft 11, an adjusting nut 21, a piston 14, a housing-oil cylinder 15, an inner tooth friction plate group 17, an outer tooth friction plate group 18; the outer tooth of the outer tooth hollow shaft is embedded with the inner tooth friction plate group, and the inner tooth of the housing-inner ring is embedded with the outer tooth friction plate group, and the inner tooth friction plate group and the outer tooth friction plate group are inserted together to form a static and dynamic friction pair; the brake mechanism has a brake mechanism rear end cover 7 and a brake mechanism front end cover 10 at both ends and is supported and fixed by bearings, and the friction force between the inner tooth friction plate group and the outer tooth friction plate group is detected by the disc spring pressure sensor 6 and adjusted by the adjusting screw 4.

[0033] The hydraulic system includes a hydraulic station, a cooling oil system and a pressure oil system; the cooling oil system fills cooling oil from the cooling oil inlet of the brake into the gap between the friction plate groups in the brake chamber through the oil circuit of the cooling oil system from the hydraulic station, cools the friction plate, returns to the hydraulic station through the cooling oil outlet, and prevents the friction plate from overheating and sparking during braking.

[0034] The pressure oil system fills the pressure oil into the oil cylinder cavity through the oil passage of the pressure oil system by the hydraulic station, drives the whole piston reciprocating movement under the pushing of the pressure oil, and realizes the compression and release separation between the inner and outer friction plates in the brake mechanism.

[0035] The hydraulic system monitoring device, the cooling oil temperature sensor is installed on the cooling oil inlet channel or the oil return channel, is used for monitoring the cooling oil temperature entering the brake cavity, and timely adjusts the oil supply flow rate according to the oil temperature change to ensure the cooling effect; the pressure oil pressure sensor is installed on the pressure oil inlet channel, is used for monitoring the oil pressure change of the pressure oil entering the oil cylinder cavity, and timely adjusts the oil supply pressure according to the oil pressure change to ensure the braking effect.

[0036] When braking, the hydraulic pressure oil is discharged and returned, the piston 14 is compressed under the spring force of the disc spring 16 to make the inner tooth friction plate group 17 and the outer tooth friction plate group 18 press together, since the outer tooth friction plate group 18 is engaged with the inner teeth of the shell-inner tooth ring 8, and the shell-inner tooth ring 8 is fixed with the brake mechanism rear end cover 7 and the brake mechanism front end cover 10 as a whole, therefore, the inner and outer friction plate groups are in the compression state, and the parking brake is realized.

[0037] When starting, the pressure oil pressure is slowly increased, the piston 14 compresses the disc spring, the normal pressure between the inner and outer tooth friction plate groups 17, 18 is slowly decreased, the inner and outer tooth friction plate groups 17, 18 are converted from static friction to dynamic friction, until completely separated, and the brake is released.

[0038] The backstop inner tooth ring 27 of the backstop mechanism is provided with a spacing retainer 28 between the adjacent bearing inner ring for positioning.

[0039] The torque limiting mechanism is provided with a torque limiting pressure sensor 24 between the torque limiting adjusting screw 23 and the torque limiting inner and outer friction plate groups 25, 26 for detecting the pressure between the friction plates, measuring the normal pressure of the friction plates applied by the torque limiting spring (not labeled in the figure) between the outer friction plate group 25, 26 and the torque limiting adjusting screw 23, and analyzing and judging the wear degree of the friction plates to predict the remaining service life of the friction plates.

[0040] When starting, the cooling oil is first filled into the brake cavity of the brake mechanism, the cooling oil gap between the inner and outer friction plate groups of the brake mechanism is filled by the oil cooling system of the hydraulic station through the cooling oil inlet 3, the friction plates are cooled, the cooling oil returns to the hydraulic station through the cooling oil outlet 5, the oil quantity of the cooling system is calculated, long time continuous controllable safe braking is realized, the braking time can reach and exceed 180 seconds, and the heating overtemperature and spark generation are avoided.

[0041] Then the oil pressure of the control pressure oil is slowly increased, the piston 14 compresses the disc spring, the positive pressure between the inner and outer tooth friction plate sets 17, 18 is slowly decreased, the gap between the inner and outer tooth friction plate sets 17, 18 is gradually increased, until completely separated, the brake is released, at this time the backstop plays the backstop function, preventing the permanent magnet roller from reversing, then the permanent magnet roller starts to rotate forward under the control of electricity, at this time the outer ring of the backstop mechanism rotates forward with the drum skin, and the equipment operates normally.

[0042] The shutdown is divided into normal shutdown, deceleration shutdown and emergency shutdown.

[0043] When the normal shutdown, the speed of the permanent magnet roller is gradually reduced under the control of electricity until the speed approaches zero, the backstop is actuated to achieve backstop, the oil pressure of the brake control pressure oil is reduced to zero, the disc spring pushes the piston to compress the friction plate set of the brake mechanism, and the parking brake is achieved.

[0044] When the deceleration shutdown, the brake pressure oil is controlled to be returned to oil, the gap between the inner tooth friction plate set 17 and the outer tooth friction plate set 18 is controlled to be reduced under the spring force of the disc spring until zero, therefore, the braking force is gradually increased, the speed of the permanent magnet roller is gradually reduced, and the controllable braking is achieved.

[0045] When the emergency shutdown under the condition of system power failure, especially when the system power failure just starts to start the conveyor belt, the permanent magnet roller loses the electric driving force, the conveyor speed is quickly reduced to zero, the roller will have a reverse rotation trend under the action of the conveyor rebound force, at this time, the backstop mechanism plays the backstop role, when it belongs to multiple permanent magnet motor drives, if the backstop force of a certain one is too large, it will exceed the backstop friction force set by the torque limiting mechanism, the inner and outer friction plate sets of the torque limiting mechanism will slide, thereby realizing the limiting of the single backstop force, avoiding the impact, and realizing the balance of multiple backstop forces. At the same time, the oil pressure of the brake control pressure oil is controlled to be reduced by the set reduction speed of the hydraulic station system, and the parking brake is achieved.

[0046] In addition, when the backstop outer ring 31 moves reversely, the backstop assembly 29 simultaneously contacts the backstop outer ring 31 and the backstop inner ring 27, and applies a braking force to the backstop outer ring 31. In this process, the backstop assembly 29 is in a locked state, limiting the relative movement of the backstop inner ring 27 and the backstop outer ring 31, the fixed shaft 12 is connected with the support 1, and the support 1 is fixed on the foundation, having the backstop function.

[0047] The difference between the first embodiment and the second embodiment lies in the different connection relationship between the torque limiting mechanism and the backstop mechanism A and the permanent magnet roller, one is that the torque limiting mechanism and the backstop mechanism A are installed in the drum skin of the permanent magnet roller, and the other is that the torque limiting mechanism and the backstop mechanism A are installed outside the drum skin of the permanent magnet roller (see Figure 1 、 Figure 2) ; furthermore, one is the support end cover and the drum end cover of the torque limiting mechanism and the backstop mechanism A are integrated, and one is separated, i.e. the support end cover and the drum end cover are separately arranged and then connected (see Figure 4 、 Figure 5 ).

Claims

1. An integrated permanent magnet drum, comprising a permanent magnet drum, a torque limiting mechanism and a backstop mechanism, a braking mechanism, a hydraulic system and its monitoring device, and a braking torque monitoring device, characterized in that, The braking mechanism, torque limiting mechanism, backstop mechanism, and permanent magnet drum are directly connected to form an integrated compact structure; the integrated combination structure A of the torque limiting mechanism and backstop mechanism and the braking mechanism B are connected to the permanent magnet drum through a drum end cap with positioning function; the integrated combination structure A of the torque limiting mechanism and backstop mechanism and the braking mechanism B are respectively connected to the fixed shaft through a torque limiting external tooth hollow shaft and an external tooth hollow shaft, forming an integrated compact structure. The torque limiting mechanism includes a torque-limiting external toothed hollow shaft, a backstop internal toothed ring, a torque-limiting internal friction plate group, a torque-limiting external friction plate group, a torque-limiting adjusting screw, and a torque-limiting pressure sensor. The torque-limiting internal friction plate group is embedded on the outer teeth of the external toothed hollow shaft, and the torque-limiting external friction plate group is embedded on the inner teeth of the backstop internal toothed ring. A torque-limiting pressure sensor for detecting the pressure between the friction plates is installed between the torque-limiting adjusting screw and the torque-limiting internal and external friction plate groups. The torque limiting mechanism is connected to the fixed shaft of the permanent magnet drum via the torque-limiting external toothed hollow shaft, and the torque is limited by setting the pressure of the friction plate group. The backstop mechanism includes a backstop internal toothed ring, a backstop assembly, a backstop outer ring, and a backstop mechanism end cover shared with the torque limiting mechanism. The backstop mechanism is connected to the drum end cover via a supporting end cover and rotates with the drum. A spacer ring is provided between the drum end cover and the backstop outer ring of the backstop mechanism, and a spacer ring is also provided between the backstop outer ring of the backstop mechanism and the backstop mechanism end cover. The braking mechanism includes an internal tooth friction plate assembly, an external tooth friction plate assembly, and an external tooth hollow shaft. The external tooth hollow shaft is sleeved on a fixed shaft and rotates and moves axially with the permanent magnet roller. The front end cover of the braking mechanism is fixedly connected to the housing-internal tooth ring, the housing-cylinder, and the rear end cover of the braking mechanism. The external tooth hollow shaft has internal tooth friction plate assemblies embedded in its external teeth, and the housing-internal tooth ring has external tooth friction plate assemblies embedded in its internal teeth. The internal tooth friction plate assemblies and external tooth friction plate assemblies are interleaved to form a static and dynamic friction pair. The static and dynamic friction pair formed by the internal tooth friction plate assemblies and external tooth friction plate assemblies is subjected to braking... The brake chamber is formed by the front cover of the mechanism, the housing-internal gear ring, and the piston outer ring end face; the piston is installed in the housing-cylinder, and the piston end face is formed by the outer ring end face, the inner ring end face, and the groove between them. The groove is inserted into the middle partition wall of the cylinder. The piston inner ring end face extends into the cylinder cavity and drives the entire piston to move under the pressure of the oil. Multiple blind holes are opened on the end face of the piston opposite to the rear cover of the brake mechanism. Disc springs are built into the blind holes. A guide rod is installed in the middle hole of the disc spring. The outer end of the guide rod abuts against the adjusting screw installed on the end cover of the brake mechanism. The adjusting screw is locked by an external adjusting nut. The braking torque monitoring device includes a disc spring pressure sensor mounted on the outer end of the guide rod for real-time monitoring of changes in disc spring pressure. This sensor converts electrical signals into digital signals and displays the pressure values, calculating the braking torque value from the measured disc spring pressure. Based on this braking torque value, the setting torque of the assembly torque wrench is determined during the manufacturing and assembly of the braking mechanism. Furthermore, during operation, the disc spring pressure sensor monitors and analyzes the wear degree of the friction plates, predicting their remaining service life. When excessive wear of the friction plates leads to a significant drop in braking torque, the pressure value of the disc spring is adjusted and calibrated using an adjusting screw to ensure the necessary braking torque value.

2. The integrated permanent magnet roller according to claim 1, characterized in that, The hydraulic system includes a hydraulic station, a cooling oil system, and a pressure oil system. The cooling oil system, through the hydraulic station, supplies cooling oil from the cooling oil inlet of the brake to the gap between the friction pads in the brake chamber, thereby cooling the friction pads. The oil is then returned to the hydraulic station through the cooling oil outlet to prevent the friction pads from overheating and generating sparks during braking.

3. The integrated permanent magnet roller according to claim 2, characterized in that, The pressure oil system, through the hydraulic station, fills the cylinder cavity with pressure oil via the oil circuit of the pressure oil system. Driven by the pressure oil, the piston reciprocates, realizing the pressing and releasing separation between the inner and outer friction plates of the braking mechanism.

4. The integrated permanent magnet roller according to claim 1, characterized in that, The hydraulic system monitoring device includes a cooling oil temperature sensor installed on the cooling oil inlet or return channel to monitor the temperature of the cooling oil entering the brake chamber and adjust the oil supply flow rate in a timely manner according to the oil temperature change to ensure the cooling effect; and a pressure oil sensor installed on the pressure oil inlet channel to monitor the oil pressure change of the pressure oil entering the cylinder chamber and adjust the oil supply pressure in a timely manner according to the oil pressure change to ensure the braking effect.

5. The integrated permanent magnet roller according to claim 1, 2, 3 or 4, characterized in that, The torque limiting mechanism and the backstop mechanism are all installed on the same side of the permanent magnet drum, or separately installed on both sides of the permanent magnet drum.

6. The integrated permanent magnet roller according to claim 1, 2, 3 or 4, characterized in that, The torque limiting mechanism and the backstop mechanism are installed inside the shell of the permanent magnet drum, or the torque limiting mechanism and the backstop mechanism A are installed outside the shell of the permanent magnet drum.

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