CN221093533U

CN221093533U - Winch with brushless motor and brake mechanism integrated

Info

Publication number: CN221093533U
Application number: CN202322404085.7U
Authority: CN
Inventors: 崔晓君
Original assignee: Ningbo Lianda Winch Co Ltd
Current assignee: Ningbo Lianda Winch Co Ltd
Priority date: 2023-09-04
Filing date: 2023-09-04
Publication date: 2024-06-07
Anticipated expiration: 2033-09-04

Abstract

The utility model relates to the technical field of winches, in particular to a winch with a brushless motor and a brake mechanism integrated, which comprises a brushless motor mechanism, a brake mechanism, a transmission shaft, a gear box mechanism, a winch barrel and a controller mechanism; the brushless motor mechanism is connected with one end of the transmission shaft through a brake mechanism, and the other end of the transmission shaft is connected with a planetary gear unit in the gear box mechanism; one end of the winding drum is rotatably connected to the brushless motor mechanism, and the other end of the winding drum is fixedly connected with the planetary gear unit; the controller mechanism is arranged between the brushless motor mechanism and the gear box mechanism; the controller mechanism is used for controlling the brushless motor mechanism to drive. The utility model has the advantages that the brushless motor mechanism is combined with the brake mechanism, the rotating speed is controllable through the brushless motor mechanism, and meanwhile, the stability and the reliability of the winch during braking can be improved through the brake mechanism, so that the service life of the winch is prolonged, and the occurrence of accidents is reduced.

Description

Winch with brushless motor and brake mechanism integrated

Technical Field

The utility model relates to the technical field of winches, in particular to a winch with a brushless motor and a brake mechanism integrated.

Background

The existing winch such as a winch integrating a permanent magnet brushless motor and a controller is disclosed in China patent (CN 218217032U), and comprises a brushless motor and the controller, wherein the brushless motor comprises a stator with coil windings and a motor support, the stator is fixed in the motor support, a rotor and a rotating shaft fixed at the center of the rotor are arranged in the stator, the rotating shaft is rotationally connected with the motor support, one end of the rotating shaft is fixedly connected with a magnetic steel support, cylindrical magnetic steel is arranged in the magnetic steel support, the controller comprises a control circuit board, one end, close to the cylindrical magnetic steel, of the motor support is fixed with the control circuit board, and a sensor chip for realizing angle detection with the cylindrical magnetic steel is arranged on the control circuit board. The problem that current brushless motor's sensor and cylindrical magnet steel distance are farther is solved, adopts above-mentioned scheme, is in the same place brushless motor and controller integration, shortens the length of whole electric capstan, reduces space occupation, and convenient die sinking reduces manufacturing cost, has improved the reliability, and the complete machine uses the wiring simpler.

Through foretell capstan winch and among the current capstan winch, rotate through brushless motor direct drive transmission shaft, can exist because capstan winch brushless motor stops rotating when being in the brake, because the transmission shaft can receive the gravity effect of traction object and appear reversing the atress, if appear the atress too big, cause the motor to damage very easily, influence capstan winch life.

Disclosure of utility model

The utility model aims to solve the technical problem that the existing winch is damaged due to overlarge stress when the winch is braked, and provides the winch with the brushless motor and the brake mechanism integrated with each other, wherein the brushless motor is matched with the brake mechanism, so that the stability and the reliability of the winch when the winch is braked can be improved while the rotating speed is controllable, and the service life of the winch is prolonged.

The utility model aims at realizing the following technical scheme:

A winch with a brushless motor and a brake mechanism integrated comprises a brushless motor mechanism, a brake mechanism, a transmission shaft, a gear box mechanism, a winch barrel and a controller mechanism; the brushless motor mechanism is connected with one end of the transmission shaft through a brake mechanism, the brake mechanism comprises a driving seat, a reverse expansion torsion spring, a driven seat and a brake sleeve which are coaxially arranged, the driving seat is coaxially arranged with the driving shaft, the driving seat is rotationally connected with the driven seat, and the driven seat is connected with the transmission shaft; the driving seat is movably connected with one end bending pin of the reverse-expansion torsion spring, the driven seat is fixedly connected with the other end bending pin of the reverse-expansion torsion spring, and the whole formed by the driving seat, the reverse-expansion torsion spring and the driven seat is arranged in a brake sleeve which is fixedly arranged on the motor shell; the outer ring of the reverse-expansion torsion spring is in friction contact with the inner wall of the brake sleeve in the initial state, and the friction force between the reverse-expansion torsion spring and the inner wall of the brake sleeve in the initial state is smaller than the friction force formed by the expansion of the reverse-expansion torsion spring and the inner wall of the brake sleeve during braking; the other end of the transmission shaft is connected with a planetary gear unit in the gear box mechanism; one end of the winding drum is rotatably connected to the brushless motor mechanism, and the other end of the winding drum is fixedly connected with the planetary gear unit; the controller mechanism is arranged between the brushless motor mechanism and the gear box mechanism; the controller mechanism is used for controlling the brushless motor mechanism to drive.

Through brushless motor mechanism and brake mechanism combination, realize that the rotational speed is controllable through brushless motor mechanism, stability and reliability when can promoting the capstan winch brake simultaneously through brake mechanism, and then promote capstan winch life, reduce the occurence of failure.

Preferably, the outer circumferential surface of the brake sleeve is provided with a positioning block in an annular array, the positioning block is provided with a groove, the motor shell is provided with a sleeve seat connected with the brake sleeve, the sleeve seat is provided with a notch matched with the positioning block, the circumferential surface of the sleeve seat is provided with an annular groove which passes through the notch and is complementary with the groove, and the brake sleeve and the sleeve seat are embedded into the annular groove and the groove through an outer clamp to be fixed; the brake sleeve is internally provided with a positioning bushing for positioning the passive seat, and the positioning bushing is limited in the brake sleeve through a clamp spring. The groove on the brake sleeve is fixed with the annular groove of the sleeve seat through the outer clamp, the fixing effect and connectivity are further improved, meanwhile, the positioning accuracy of the brake sleeve can be further achieved through the positioning bushing, meanwhile, the brake sleeve is limited, and the stability in the use process is improved.

Preferably, the brushless motor mechanism includes a motor housing, a stator, a rotor, and a drive shaft; the stator is fixed in the motor shell, and a coil is sleeved on the stator; the rotor is rotationally connected in the stator, the driving shaft is arranged in the center of the rotor, and the driving shaft is rotationally connected in the motor shell; the driving shaft is connected with one end of the transmission shaft through a brake mechanism. The brushless motor structure is convenient for better control the rotating speed, and can output larger torque.

Preferably, the gear box mechanism comprises a gear box bracket, a gear box outer cylinder, a gear box end cover and the planetary gear unit; the gear box outer cylinder is fixedly connected between the gear box bracket and the gear box end cover; the gear box end cover is provided with inner ring teeth; the planetary gear unit includes a first planetary gear set, a second planetary gear set, and a third planetary gear set; the end part of the transmission shaft sequentially passes through the third planetary gear set, the second planetary gear set and the first planetary gear set to be rotationally connected to the end cover of the gear box; the end part of the transmission shaft is fixedly connected with a hexagonal center wheel; the hexagonal center wheel is in transmission connection with the first planetary gear set; the first planetary gear set, the second planetary gear set and the third planetary gear set are sequentially connected in a transmission mode. The stable transmission is realized through three groups of planetary gears, and the speed reduction effect is realized.

Preferably, the inner gear ring of the second planetary gear set and the inner gear ring of the third planetary gear set are integrated into a complete clutch gear ring; the gear box outer cylinder is provided with a clutch mechanism for driving the clutch gear ring to axially move, and the gear box bracket is provided with outer ring teeth; in the connection state, the inner ring of the clutch gear ring is meshed with the outer ring teeth on the gear box bracket; in a separation state, the inner ring of the clutch gear ring is separated from the outer ring teeth on the gear box bracket. Through sharing a separation and reunion ring gear, can realize that second planetary gear set and third planetary gear set are synchronous in the state of breaking away from simultaneously or synchronous in the connected state, and then can not need to separate second planetary gear set and third planetary gear set one by one, promote the convenience of separation and reunion, finally drive clutch mechanism can drive separation and reunion ring gear and carry out axial displacement to realize separation and reunion of separation and reunion ring gear, and then realize the separation and reunion of capstan winch.

Preferably, a positioning ring groove is arranged on the outer peripheral wall of the clutch gear ring; the clutch mechanism comprises a clutch deflector rod and a limit sleeve; a rotating shaft is arranged on the clutch shifting rod; the rotating shaft is provided with a concave limiting half groove; the lower end of the rotating shaft is provided with a clutch head which is eccentrically arranged relative to the rotating shaft; the clutch head extends into the positioning ring groove of the clutch gear ring and drives the clutch gear ring to axially move; the gear box outer cylinder is provided with a limit sleeve mounting opening; the limit sleeve is fixedly arranged on the limit sleeve mounting port; the limiting sleeve is axially connected with a limiting screw, and the limiting screw extends into the limiting half groove to enable the clutch deflector rod to rotate in a limiting manner relative to the limiting sleeve; when the clutch shifting lever rotates to a limiting end, the clutch gear ring is meshed with the outer ring gear to be in a connection state; when the clutch driving lever rotates to the other limit end, the clutch gear ring is separated from the outer ring gear to be in a separation state. Through the structure of separation and reunion driving lever and stop collar, can make the pivot rotate eccentric clutch head and carry out axial displacement when rotating the separation and reunion driving lever, and then because the clutch head can stable drive separation and reunion ring gear axial displacement in the locating ring groove, finally realized two kinds of states of separation and reunion of capstan winch.

Preferably, the controller mechanism includes an overheat protection module for temperature overheat protection. Can be under the circumstances that the pulling force constantly improves through overheat protection module, can carry out the overtemperature protection to controller mechanism when the appearance temperature is too high, prevent that controller mechanism from burning out owing to the temperature is too high, further promote protection effect and security.

Preferably, the controller mechanism further comprises an overload protection module for current overload protection. Can carry out overload protection to controller mechanism when the electric current overload appears under the circumstances that the pulling force constantly improves through overload protection module, prevent that controller mechanism from burning out, further promote protection effect and security.

In summary, the utility model has the advantages that the brushless motor mechanism is combined with the brake mechanism, the rotating speed is controllable through the brushless motor mechanism, and meanwhile, the stability and the reliability of the winch during braking can be improved through the brake mechanism, so that the service life of the winch is prolonged, and the occurrence of accidents is reduced.

Drawings

Fig. 1 is a schematic diagram of a winch with a brushless motor and a brake mechanism of the present utility model.

Fig. 2 is a cross-sectional view of a winch with a brushless motor and a brake assembly of the present utility model.

Fig. 3 is a cross-sectional view of a brushless motor mechanism of the present utility model.

FIG. 4 is a cross-sectional view of a brake mechanism according to the present utility model

Fig. 5 is an exploded view of a winch with a brushless motor and a brake assembly of the present utility model.

Wherein: 1. a brushless motor mechanism; 11. a motor housing; 111. a sleeve seat; 112. a notch; 113. an annular groove; 25. positioning the bushing; 12. a stator; 13. a rotor; 14. a drive shaft; 15. a coil; 2. a brake mechanism; 21. a driving seat; 22. a reverse expansion torsion spring; 23. a passive seat; 24. a brake sleeve; 241. a positioning block; 242. a groove; 3. a transmission shaft; 31. a hexagonal center wheel; 4. a gear box mechanism; 41. a gear box bracket; 411. outer ring teeth; 42. an outer cylinder of the gear box; 43. a gearbox end cap; 431. inner ring teeth; 410. a first planetary gear set; 420. a second planetary gear set; 430. a third planetary gear set; 44. a clutch gear ring; 441. positioning ring grooves; 5. a winding drum; 6. a controller mechanism; 7. an outer card; 9. a clutch mechanism; 91. a clutch deflector rod; 911. a rotating shaft; 912. a limit half groove; 913. a clutch head; 92. a limit sleeve; 93. and (5) limiting screws.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

As shown in fig. 1 to 5, a winch with a brushless motor and a brake mechanism integrated comprises a brushless motor mechanism 1, a brake mechanism 2, a transmission shaft 3, a gear box mechanism 4, a winch drum 5 and a controller mechanism 6; the brushless motor mechanism 1 is connected with one end of a transmission shaft 3 through a brake mechanism 2, and the other end of the transmission shaft 3 is connected with a planetary gear unit in a gear box mechanism 4; one end of the winding drum 5 is rotatably connected to the brushless motor mechanism 1, the other end of the winding drum 5 is fixedly connected with the planetary gear unit, the controller mechanism 6 is used for controlling the brushless motor mechanism 1 to drive, the controller mechanism 6 is arranged between the brushless motor mechanism 1 and the gear box mechanism 4, the controller mechanism 6 can be connected with the brushless motor mechanism 1 in an overhead or underneath mode, and the winding drum and the brushless motor mechanism 1 can form an integral or split structural design, so that the installation and maintenance of the controller mechanism 6 can be facilitated, and the convenience of operation and maintenance is improved. Through brushless motor mechanism 1 and brake mechanism 2 combination, realize the rotational speed is controllable through brushless motor mechanism 1, stability and reliability when can promoting the capstan winch brake simultaneously through brake mechanism 2, and then promote capstan winch life, reduce the occurence of failure.

As shown in fig. 2 and 3, the brushless motor mechanism 1 includes a motor housing 11, a stator 12, a rotor 13, and a drive shaft 14; the stator 12 is fixed in the motor shell 11, and a coil 15 is sleeved on the stator 12; the rotor 13 is rotatably connected in the stator 12, the driving shaft 14 is arranged in the center of the rotor 13, and the driving shaft 14 is rotatably connected in the motor housing 11; the driving shaft 14 is connected with one end of the driving shaft 3 through the braking mechanism 2. The brushless motor structure is convenient for better control the rotating speed, and can output larger torque.

As shown in fig. 2 and 4, the brake mechanism 2 comprises a driving seat 21, a reverse expansion torsion spring 22, a driven seat 23 and a brake sleeve 24 which are coaxially arranged, wherein the driving seat 21 and the driving shaft 14 are coaxially arranged, the driving seat 21 is rotationally connected with the driven seat 23, and the driven seat 23 is connected with the transmission shaft 3; the reverse-expansion torsion spring 22 is sleeved on the driving seat 21 and the driven seat 23, the driving seat 21 is arranged in a fan-shaped groove which is movably matched with a bent foot at one end of the reverse-expansion torsion spring 22, the driven seat 23 is arranged in a bent foot groove which is fixedly matched with a bent foot at the other end of the reverse-expansion torsion spring 22, the whole formed by the driving seat 21, the reverse-expansion torsion spring 22 and the driven seat 23 is arranged in the brake sleeve 24, and the brake sleeve 24 is fixedly arranged on the motor shell 11; the outer ring of the reverse tension torsion spring 22 is in friction contact with the inner wall of the brake sleeve 24 in the initial state, and the friction force between the reverse tension torsion spring 22 and the inner wall of the brake sleeve 24 in the initial state is smaller than the friction force formed by the expansion of the reverse tension torsion spring 22 and the inner wall of the brake sleeve 24 during braking. Through can playing the brake effect, also further promoted the stability and the reliability of brake simultaneously, increase of service life.

As shown in fig. 4, the outer peripheral surface of the brake sleeve 24 is provided with a positioning block 241 in an annular array, the positioning block 241 is provided with a groove 242, the motor housing 11 is provided with a sleeve seat 111 connected with the brake sleeve 24, the sleeve seat 111 is provided with a notch 112 matched with the positioning block 241, the peripheral surface of the sleeve seat 111 is provided with an annular groove 113 which passes through the notch 112 and is complementary with the groove 242, and the brake sleeve 24 and the sleeve seat 111 are fixed by being embedded into the annular groove 113 and the groove 242 through an outer clip 7; a positioning bushing 25 for positioning the passive seat 23 is arranged in the brake sleeve 24, and the positioning bushing 25 is limited in the brake sleeve 24 through a clamp spring. The groove 242 on the brake sleeve 24 is fixed with the annular groove 113 of the sleeve seat 111 through the outer clamp 7, the fixing effect and connectivity are further improved, meanwhile, the positioning accuracy of the brake sleeve 24 can be further achieved through the positioning bushing 25, meanwhile, the brake sleeve 24 is limited, and the stability in the use process is improved.

When the brake mechanism 2 works, the driving shaft 14 drives the driving seat 21 to rotate clockwise, and the clockwise rotation stress of the driving seat 21 overcomes the initial friction force between the counter-expansion torsion spring 22 and the brake sleeve 24, so that the counter-expansion torsion spring 22 is contracted, and does not form braking with the brake sleeve 24, and the counter-expansion torsion spring 22 rotates clockwise to drive the driven seat 23 to rotate clockwise, so that paying-off operation is realized. When the winch performs traction operation, the driving shaft 14 drives the driving seat 21 to rotate anticlockwise, and the driving seat 21 drives the driven seat 23 to rotate first and then the driven seat 23 drives the right end bent leg of the reverse-expansion torsion spring 22 to rotate anticlockwise because the bent leg at the left end of the reverse-expansion torsion spring 22 is in movable fit with the fan-shaped groove of the driving seat 21. At this time, the left end bending foot of the reverse expansion torsion spring 22 is rotated anticlockwise to overcome the initial friction force between the reverse expansion torsion spring 22 and the brake sleeve 24, and the reverse expansion torsion spring 22 is also contracted, so that the brake cannot be formed with the brake sleeve 24, and the traction operation is realized. When the motor suddenly stops rotating during traction, the passive seat 23 is subjected to reverse stress due to the gravity action of a traction object, and at the moment, the reverse stress overcomes the initial friction force between the reverse tension torsion spring 22 and the brake sleeve 24 (the part of the reverse tension torsion spring 22 close to the passive seat 23 changes quickly, and the part of the reverse tension torsion spring 22 close to the active seat 21 changes slowly under the influence of the initial friction force), and the reverse tension torsion spring 22 expands, so that braking is realized.

As shown in fig. 2 and 5, the gear case mechanism 4 includes a gear case carrier 41, a gear case outer cylinder 42, a gear case end cover 43, and a planetary gear unit; the gear box outer cylinder 42 is fixedly connected between the gear box bracket 41 and the gear box end cover 43; the gear box end cover 43 is provided with inner ring teeth 431; the planetary gear units include a first planetary gear set 410, a second planetary gear set 420, and a third planetary gear set 430; the end of the transmission shaft 3 is rotatably connected to the gear case end cover 43 through the third planetary gear set 430, the second planetary gear set 420 and the first planetary gear set 410 in this order; the end part of the transmission shaft 3 is fixedly connected with a hexagonal center wheel 31; the hexagonal center wheel 31 is in driving connection with the first planetary gear set 410; the first planetary gear set 410, the second planetary gear set 420 and the third planetary gear set 430 are in driving connection in sequence. The stable transmission is realized through three groups of planetary gears, and the speed reduction effect is realized.

As shown in fig. 2 and 5, the ring gear of the second planetary gear set 420 and the ring gear of the third planetary gear set 430 are integrally formed and combined into one complete clutch ring gear 44; the outer cylinder 42 of the gear box is provided with a clutch mechanism 9 for driving the clutch gear ring 44 to axially move, and the bracket 41 of the gear box is provided with outer ring teeth 411; in the connected state, the inner ring of the clutch gear ring 44 is meshed with the outer ring teeth 411 on the gear box bracket 41; in the disengaged state, the inner race of the clutch ring gear 44 is separated from the outer race teeth 411 on the gear case carrier 41. By sharing one clutch gear ring 44, the second planetary gear set 420 and the third planetary gear set 430 can be synchronously in a disengaged state or in a connected state, so that the second planetary gear set 420 and the third planetary gear set 430 do not need to be separated one by one, the convenience of clutch is improved, and finally the clutch mechanism 9 can drive the clutch gear ring 44 to axially move, so that the clutch gear ring 44 is engaged, and further the winch is engaged.

As shown in fig. 2 and 5, a positioning ring groove 441 is provided on the outer peripheral wall of the clutch ring gear 44; the clutch mechanism 9 comprises a clutch deflector 91 and a limit sleeve 92; the clutch lever 91 is provided with a rotating shaft 911; the rotating shaft 911 is provided with a concave limiting half groove 912; the clutch head 913 eccentrically arranged relative to the rotating shaft 911 is arranged at the lower end of the rotating shaft 911; the clutch head 913 extends into the positioning ring groove 441 of the clutch gear ring 44 and drives the clutch gear ring 44 to axially move; the gear box outer cylinder 42 is provided with a limit sleeve mounting port; the stop collar 92 is fixedly arranged on the stop collar mounting port; the limiting sleeve 92 is axially connected with a limiting screw 93, and the limiting screw 93 extends into the limiting half groove 912, so that the clutch deflector 91 rotates in a limiting way relative to the limiting sleeve 92; when the clutch shift lever 91 rotates to a limit end, the clutch gear ring 44 is meshed with the outer ring gear 411 to be in a connection state; when the clutch lever 91 rotates to the other limit end, the clutch ring gear 44 is separated from the outer ring gear 411 to be in a separated state. Through the structure of clutch driving lever 91 and stop collar 92, can make pivot 911 rotate eccentric clutch head 913 and carry out axial displacement when rotating clutch driving lever 91, and then because clutch head 913 can stable drive clutch gear ring 44 axial displacement in locating ring groove 441, two states of the separation and reunion of capstan have finally been realized.

The controller mechanism 6 includes an overheat protection module for temperature overheat protection. Can be under the circumstances that the pulling force constantly improves through overheat protection module, can carry out the overheat protection to controller mechanism 6 when the appearance temperature is too high, prevent controller mechanism 6 because the too high burning out of temperature, further promote protection effect and security. The overheat protection module is provided by the following means: setting the NTC temperature to 180 degrees temporarily (the temperature can be set according to different product types), embedding an NTC temperature probe in a motor stator enameled wire, connecting an NTC lead to a controller externally, and cutting off an input power supply of the motor when the controller detects that the NTC temperature is higher than 180 degrees, and stopping the motor so as to ensure that the motor is not burnt by high temperature and the magnet is not demagnetized; when the temperature returns to a safe value (the safe temperature value can be set arbitrarily), the controller can restart the motor.

Also included within the controller mechanism 6 is an overload protection module for current overload protection. Can carry out overload protection to controller mechanism 6 when the current overload appears under the circumstances that the pulling force constantly improves through overload protection module, prevent controller mechanism 6 from burning out, further promote protection effect and security overcurrent protection. The overload protection module is implemented by the following steps: the motor controller is internally provided with a high-precision current testing component, when the current exceeds the moment (within 100 ms-5S) of the designed maximum current value in the running process of the motor, the motor controller cuts off the power supply of the motor, so that the motor can be safely protected, and the motor controller can also be safely protected; when the motor is protected, the motor can be restarted immediately, if the current value is within the safety range, the motor can continue to operate, and if the current value still exceeds the maximum current value, the motor can continue to stop for protection.

When the device works, the brushless motor mechanism 1 drives the transmission shaft 3 to rotate through the driving shaft 14 and the brake mechanism 2, the transmission shaft 3 sequentially drives the first planetary gear set 410, the second planetary gear set 420 and the third planetary gear set 430 to carry out speed reduction transmission through the hexagonal central wheel 31, and finally the winch drum 5 is driven to rotate to realize rope winding or unwinding; when the rope is retracted, the clutch gear ring 44 moves leftwards by rotating the limit end of the clutch deflector 91 on the clutch mechanism 9 anticlockwise, and the clutch gear ring 44 is meshed with the outer ring gear 411 to be in a connection state; so that the torque of the motor can be transmitted to the winding drum 5; when the rope is released, the clutch gear ring 44 moves rightwards by rotating the limit end of the clutch shifting lever 91 on the clutch mechanism 9 clockwise, and the clutch gear ring 44 is separated from the outer ring gear 411 to be in a separation state; the clutch ring gear 44 is controlled with the second planetary gear set 420 and the third planetary gear set 430 at this time, so that the torque of the motor cannot be transmitted to the winding drum 5.

In summary, the utility model has the advantages that the winch is combined with the brake mechanism 2 through the brushless motor mechanism 1, the rotating speed is controllable through the brushless motor mechanism 1, meanwhile, the stability and the reliability of the winch during braking can be improved through the brake mechanism 2, the service life of the winch is further prolonged, and the accident occurrence is reduced.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.

Claims

1. The winch integrating the brushless motor and the brake mechanism is characterized by comprising a brushless motor mechanism (1), a brake mechanism (2), a transmission shaft (3), a gear box mechanism (4), a winch barrel (5) and a controller mechanism (6); the brushless motor mechanism (1) is connected with one end of the transmission shaft (3) through a brake mechanism (2), the brake mechanism (2) comprises a driving seat (21), a reverse expansion torsion spring (22), a driven seat (23) and a brake sleeve (24) which are coaxially arranged, the driving seat (21) is coaxially arranged with a driving shaft (14) in the brushless motor mechanism (1), the driving seat (21) is rotationally connected with the driven seat (23), and the driven seat (23) is connected with the transmission shaft (3); the driving seat (21) is movably connected with one end bending pin of the reverse expansion torsion spring (22), the driven seat (23) is fixedly connected with the other end bending pin of the reverse expansion torsion spring (22), the whole formed by the driving seat (21), the reverse expansion torsion spring (22) and the driven seat (23) is arranged in a brake sleeve (24), and the brake sleeve (24) is fixedly arranged on a motor shell (11) in the brushless motor mechanism (1); the outer ring of the reverse expansion torsion spring (22) is in friction contact with the inner wall of the brake sleeve (24) in the initial state, and the friction force between the reverse expansion torsion spring (22) and the inner wall of the brake sleeve (24) in the initial state is smaller than the friction force formed by the expansion of the reverse expansion torsion spring (22) and the inner wall of the brake sleeve (24) during braking; the other end of the transmission shaft (3) is connected with a planetary gear unit in the gear box mechanism (4); one end of the winding drum (5) is rotatably connected to the brushless motor mechanism (1), and the other end of the winding drum (5) is fixedly connected with the planetary gear unit; the controller mechanism (6) is arranged between the brushless motor mechanism (1) and the gear box mechanism (4); the controller mechanism (6) is used for controlling the brushless motor mechanism (1) to drive.

2. The winch integrated with the brushless motor and the brake mechanism according to claim 1, wherein an annular array of positioning blocks (241) are arranged on the outer circumferential surface of the brake sleeve (24), grooves (242) are formed in the positioning blocks, sleeve bases (111) connected with the brake sleeve (24) are arranged on the motor shell (11), notches (112) matched with the positioning blocks (241) are formed in the sleeve bases (111), annular grooves (113) which pass through the notches (112) and are complementary with the grooves (242) are formed in the circumferential surface of the sleeve bases (111), and the brake sleeve (24) and the sleeve bases (111) are embedded into the annular grooves (113) and the grooves (242) through outer clips (7) to be fixed; a positioning bushing (25) for positioning the driven seat (23) is arranged in the brake sleeve (24), and the positioning bushing (25) is limited in the brake sleeve (24) through a clamp spring.

3. Winch integrated with a braking mechanism, according to claim 1, characterized in that said brushless motor mechanism (1) comprises said motor housing (11), stator (12), rotor (13) and said drive shaft (14); the stator (12) is fixed in the motor shell (11), and a coil (15) is sleeved on the stator (12); the rotor (13) is rotationally connected in the stator (12), the driving shaft (14) is arranged in the center of the rotor (13), and the driving shaft (14) is rotationally connected in the motor shell (11); the driving shaft (14) is connected with one end of the driving shaft (3) through the braking mechanism (2).

4. Winch integrated with a brushless motor and a brake mechanism according to claim 1, characterized in that the gearbox mechanism (4) comprises a gearbox bracket (41), a gearbox outer cylinder (42), a gearbox end cap (43) and the planetary gear unit; the gear box outer cylinder (42) is fixedly connected between the gear box bracket (41) and the gear box end cover (43); an inner ring tooth (431) is arranged on the gear box end cover (43); the planetary gear unit includes a first planetary gear set (410), a second planetary gear set (420), and a third planetary gear set (430); the end part of the transmission shaft (3) sequentially passes through the third planetary gear set (430), the second planetary gear set (420) and the first planetary gear set (410) to be connected to the end cover (43) of the gear box in a rotating way; the end part of the transmission shaft (3) is fixedly connected with a hexagonal center wheel (31); the hexagonal center wheel (31) is in transmission connection with the first planetary gear set (410); the first planetary gear set (410), the second planetary gear set (420) and the third planetary gear set (430) are sequentially connected in a transmission manner.

5. The winch of claim 4, wherein the ring gear of the second planetary gear set (420) and the ring gear of the third planetary gear set (430) are integrally formed and combined into a complete clutch ring gear (44); a clutch mechanism (9) for driving a clutch gear ring (44) to axially move is arranged on the gear box outer cylinder (42), and outer ring teeth (411) are arranged on the gear box bracket (41); in the connection state, the inner ring of the clutch gear ring (44) is meshed with the outer ring teeth (411) on the gear box bracket (41); in the separated state, the inner ring of the clutch gear ring (44) is separated from the outer ring teeth (411) on the gear box bracket (41).

6. Winch integrated with a brushless motor and a brake mechanism according to claim 5, characterized in that a positioning ring groove (441) is provided on the outer peripheral wall of the clutch ring gear (44); the clutch mechanism (9) comprises a clutch deflector rod (91) and a limit sleeve (92); a rotating shaft (911) is arranged on the clutch shifting lever (91); a limiting half groove (912) which is concave is formed in the rotating shaft (911); the lower end of the rotating shaft (911) is provided with a clutch head (913) which is eccentrically arranged relative to the rotating shaft (911); the clutch head (913) extends into a positioning ring groove (441) of the clutch gear ring (44) and drives the clutch gear ring (44) to axially move; the gear box outer cylinder (42) is provided with a limit sleeve mounting opening; the limiting sleeve (92) is fixedly arranged on the limiting sleeve mounting opening; the limiting sleeve (92) is axially connected with a limiting screw (93), and the limiting screw (93) extends into the limiting half groove (912) to enable the clutch deflector rod (91) to rotate in a limiting manner relative to the limiting sleeve (92); when the clutch shifting lever (91) rotates to a limiting end, the clutch gear ring (44) is meshed with the outer ring teeth (411) to be in a connection state; when the clutch shifting lever (91) rotates to the other limit end, the clutch gear ring (44) is separated from the outer ring gear (411) to be in a separation state.

7. Winch integrated with a brushless motor and a braking mechanism according to claim 1, characterized in that the controller mechanism (6) comprises an overheat protection module for temperature overheat protection.

8. Winch integrated with a brushless motor and a brake mechanism according to claim 7, characterized in that the controller mechanism (6) further comprises an overload protection module for current overload protection.