CN214404617U

CN214404617U - Rear-mounted large-torque speed-reducing and speed-regulating permanent magnet coupler

Info

Publication number: CN214404617U
Application number: CN202122207438.5U
Authority: CN
Inventors: 黄忠念; 王琪华; 陈维平
Original assignee: Nanjing Magnet Intelligent Technology Co ltd
Current assignee: Nanjing Magnet Intelligent Technology Co ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2021-10-15
Anticipated expiration: 2031-09-13

Abstract

The utility model discloses a rearmounted big moment of torsion speed reduction speed governing type permanent magnet coupler, including the coupler box, permanent magnet coupler, cooling module, the reduction box, the reduction case lid, speed reduction subassembly and controller, permanent magnet coupler rotates and sets up in the coupler box, permanent magnet coupler's output shaft and input shaft expose the both ends of coupler box respectively, cooling module sets up in the coupler box, the bottom of reduction box links to each other with the one end that is close to permanent magnet coupler output shaft on the coupler box, the reduction subassembly sets up in the reduction case body, the reduction subassembly links to each other with permanent magnet coupler's output shaft, the reduction case lid is fixed to be set up in the top of reduction box, the electricity is connected between controller and the cooling module; the general permanent magnet coupler is easy to heat, and the service life of components inside the permanent magnet coupler is shortened; the utility model discloses a decelerator that sets up, the output shaft drive ratio of control permanent magnet coupler, through the cooling module who sets up, to the permanent magnet coupler cooling.

Description

Rear-mounted large-torque speed-reducing and speed-regulating permanent magnet coupler

Technical Field

The utility model relates to a mechanical transmission field, specific is a rearmounted big moment of torsion speed reduction speed governing type permanent magnet coupler.

Background

At present, the permanent magnet coupler is widely used in the field of mechanical transmission due to excellent characteristics, the permanent magnet coupler is utilized, mechanical connection between a motor and a load can be realized, the flexible connection is realized, energy is saved, the impact current of the motor can be reduced, the service life of the motor is prolonged, but when the permanent magnet coupler is used, the permanent magnet coupler can generate large heat, the interior of the permanent magnet coupler needs to be kept dustless and dry as much as possible to avoid the damage of electronic elements, therefore, the operation environment of the permanent magnet coupler needs to be kept airtight, the heat in the permanent magnet coupler is difficult to dissipate, the service life of the permanent magnet coupler is influenced, and the output rotating speed of the permanent magnet coupler is difficult to adjust.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that, to the shortcoming of above prior art, provide a rearmounted big moment of torsion speed reduction speed governing type permanent magnet coupler, the utility model discloses convenient operation, safe and reliable, simple structure, it is with low costs, both can be through the cooling device who sets up to the inside cooling of permanent magnet coupler to the inside air dust removal dehumidification of permanent magnet coupler, the output shaft speed of output that can also be through the planetary gear set control permanent magnet coupler that sets up.

In order to solve the technical problem, the technical scheme of the utility model is realized through following mode: a rear-mounted large-torque speed-reducing and speed-regulating permanent magnet coupler comprises a coupler box body, a permanent magnet coupler, a cooling assembly, a speed-reducing box body, a speed-reducing box cover, a speed-reducing assembly and a controller, wherein the permanent magnet coupler is arranged in the coupler box body, a coupler output shaft and a coupler input shaft of the permanent magnet coupler are respectively exposed out of two ends of the coupler box body, the cooling assembly is arranged in the coupler box body, the controller is electrically connected with the permanent magnet coupler, the speed-reducing box body is cylindrical, the bottom end of the speed-reducing box body is connected with one end, close to the coupler output shaft, of the coupler box body, an output shaft through hole is formed in the bottom end of the speed-reducing box body, the coupler output shaft penetrates through the output shaft through hole in the bottom end of the speed-reducing box body to extend into the speed-reducing box body, the speed-reducing assembly is arranged in the speed-reducing box body, the speed-reducing assembly is connected with the coupler output shaft, and the speed-reducing box cover is fixedly arranged at the top end of the speed-reducing box body, one end of the speed reducing assembly is exposed out of the speed reducing box cover, and the controller is fixedly arranged on the coupler box body;

the end, far away from the reduction box body, of the reduction box cover along the axial direction is provided with an outward-formed shaft fixing seat, the shaft fixing seat is a cylinder, the bottom end of the shaft fixing seat is provided with a through hole which penetrates through the reduction box cover along the axial direction, the bottom end of the shaft fixing seat is provided with a first oil seal groove, a first oil seal ring is arranged in the first oil seal groove, the bottom end of the shaft fixing seat is provided with a third limiting boss along the edge close to the side wall, the top end of the shaft fixing seat is provided with a first connecting flange, a fixing seat gland is connected onto the first connecting flange, the fixing seat gland is provided with a shaft through hole along the axial line, and the end, close to the shaft fixing seat, of the fixing seat gland is outward-formed and provided with a fourth limiting boss;

the coupler box body comprises an upper box body and a lower box body, two partition plates are arranged on the inner edge of the upper box body, the two partition plates divide the inner part of the upper box body into three cavities, the three cavities comprise two cooling cavities and a coupler installation cavity, the structures of the lower box body and the upper box body are completely the same, the partition plates in the lower box body and the upper box body correspond to each other, and a gap between the partition plates in the lower box body and the upper box body is sealed by gluing;

the cooling assembly comprises a filtering device, a miniature negative pressure pump and two cooling devices, the filtering device is arranged in one cooling cavity in the lower box body, one cooling device is arranged in the other cooling cavity in the lower box body, the other cooling device is arranged in one cooling cavity in the upper box body, the miniature negative pressure pump is fixedly arranged in the cooling cavity provided with the cooling device in the upper box body, and the miniature negative pressure pump is electrically connected with the controller;

the cooling device comprises a water tank, a water tank cover, an air pipe, a refrigerating sheet and a plurality of heat conducting sheets, wherein the water tank, the air pipe and the plurality of heat conducting sheets are all made of heat conducting metal;

the water tank is a tank body with an opening at one end, the cover of the water tank is fixedly arranged at the opening end of water, the refrigeration piece is fixedly arranged in the water tank, and the refrigeration piece is electrically connected with the controller; one end of the water tank along the thickness direction is fixedly connected with the partition board, the air pipe is a rectangular hollow pipe, one end of the air pipe along the thickness direction is fixedly connected with one end of the water tank along the thickness direction, a plurality of heat-conducting fins are arranged in the air pipe side by side along the length direction of the air pipe, the length direction of each heat-conducting fin is parallel to the width direction of the air pipe, the length of each heat-conducting fin is smaller than the width of the air pipe, the heat-conducting fins are welded and sealed with the inner contact surface of the air pipe, two sealing sheets are fixedly arranged at the two ends of the air pipe along the width direction, the sealing sheets are welded and sealed with the air pipe, one end of each heat-conducting fin along the length direction is welded with one sealing sheet, every two adjacent heat-conducting fins are connected with different sealing sheets, namely, the plurality of heat-conducting fins and the sealing sheets are combined to separate the inside of the air pipe into an S-shaped corrugated passage, the S-shaped corrugated passage is defined as an air passage, and joints are arranged on the two sealing sheets corresponding to the two ends of the air passage, the two straight-through joints are respectively positioned on the upper side and the lower side of the sealing sheet in the vertical direction;

the filtering device comprises a filtering box, a filtering box cover and a filtering medium, wherein the filtering box is a rectangular open box body, the filtering medium is arranged in the filtering box, the filtering box cover is arranged at the open end of the filtering box, a gap at the joint between the filtering box cover and the filtering box is sealed by sealant, and an air pipe joint is arranged on the upper side of one side end and the lower side of the other side end of the filtering box along the length direction;

in the cooling device in the lower box body, a straight joint below the straight joint in the vertical direction is connected with an air inlet joint through a first air pipe, the air inlet joint is fixedly arranged on a partition plate which is closest to the straight joint in the cooling device in the lower box body, one end of the air inlet joint penetrates through the partition plate and extends into a coupler mounting cavity of the lower box body, and the air inlet joint is arranged at the lower side of the partition plate; in the cooling device in the lower box body, a second air pipe is connected to a straight joint above the straight joint in the vertical direction, the free end of the second air pipe penetrates through two clapboards in the lower box body to be connected with an air pipe joint at the lower side of one side end of the filter box in the length direction, and the second air pipe is arranged close to the bottom end in the lower box body;

an air pipe joint at the upper side of the other side end of the filter box along the length direction is connected with an air inlet of the miniature negative pressure pump through a third air pipe, and an air outlet of the miniature negative pressure pump is connected with a straight-through joint at the lower part in the vertical direction in the upper box body through a fourth air pipe; a fifth air pipe is connected to the upper straight joint in the vertical direction in the upper box body, the free end of the fifth air pipe is connected with an exhaust joint, the exhaust joint is fixedly arranged on a partition plate which is closest to the straight joint in the upper box body, and one end of the exhaust joint penetrates through the partition plate and extends into a coupler installation cavity of the upper box body;

the permanent magnet coupler is rotatably arranged in the coupler mounting cavities of the upper box body and the lower box body.

The utility model discloses, through the speed reduction subassembly that sets up, adjust the rotational speed of permanent magnet coupler output, thereby it is right the utility model discloses the rotational speed of final output is adjusted, through the filter equipment who sets up, miniature negative pressure pump and two heat sink cooperations, when the function of permanent magnet coupler distributes the heat to the air on every side, utilize miniature negative pressure pump to produce the negative pressure, take coupler installation intracavity air out, and through two heat sink, to the air cooling of taking out, and the air reflux after will cooling to coupler installation intracavity, accomplish the heat exchange to the permanent magnet coupler, reduce the temperature of permanent magnet coupler, through filter equipment, filter dust impurity and moisture in the air, avoid the inside electrical components of permanent magnet coupler to damage, prolong the life of permanent magnet coupler.

The utility model discloses the technical scheme who further injects is:

two driving rotor carriers are arranged in the permanent magnet coupler, each driving rotor carrier is a circular plate, one end of each driving rotor carrier, which is far away from the other driving rotor carrier, is provided with a plurality of airflow disturbance tubes, each airflow disturbance tube is a tube which is formed by splicing a plurality of insulating heat-conducting metal flat plates and is provided with openings at two ends, one side end of each airflow disturbance tube is fixedly connected with the driving rotor carrier, the airflow disturbance tubes are uniformly arranged at intervals along the circumferential direction of the driving rotor carrier, the two ends of each airflow disturbance tube along the length direction are rectangular openings, the lengths of the rectangular openings at the two ends are the same, the widths of the rectangular openings at the two ends are different, the width M of the opening at one end is 1.5 times of the width H of the opening at the other end, the two ends of each airflow disturbance tube along the length direction are all arranged along the circumferential direction, and the direction from one end with the width M to one end with the width H of each airflow disturbance tube on one driving rotor carrier is clockwise, each airflow turbulence pipe on the other active rotor carrier is anticlockwise from one end with the width M to one end with the width H; through the air current disturbance pipe that sets up, make permanent magnet coupler when rotating, the air gets into in the air current disturbance pipe by the great one end of width of air current disturbance pipe to discharge by the less one end of width of air current disturbance pipe, both increased the efficiency of heat exchange between air and the permanent magnet coupler, can make the mobility of air reinforcing again, make the hot-air accelerate the come-up, make things convenient for cooling module to extract the hot-air.

A plurality of wavy radiating fins are arranged on the inner wall of one side end of each airflow disturbance tube connected with the driving rotor carrier; the heat exchange efficiency between the permanent magnet coupler and the air is increased.

The speed reducing assembly comprises a transmission output shaft, a sun gear, three planet gears, six first needle roller bearings, three first locking bolts, a triangular rotating disc, a second locking bolt, an internal tooth gear ring, a gear ring fixing seat and two second needle roller bearings; the middle section of the transmission output shaft along the axial direction is provided with a second limiting boss which is formed outwards; the two ends of each planetary gear along the axial direction are symmetrically provided with first bearing installation grooves which are formed inwards, gear rotating shafts are arranged at three vertex angles of the triangular rotating disc, one end of each gear rotating shaft, which is close to the triangular rotating disc, is provided with a first limiting boss, the geometric center of the triangular rotating disc is provided with a circular installation boss which is formed outwards, and an installation hole is formed in the axial direction of the circular installation boss; the gear ring fixing seat is a circular tube, and one end of the gear ring fixing seat along the axial direction is provided with a fixing plate; the output rotating speed of the permanent magnet coupler is adjusted through the planetary gear set, the structure is simple, and the cost is saved.

The sun gear is fixedly arranged on the output shaft of the coupler, the six first needle roller bearings are divided into three groups in pairs, the three groups of the first needle roller bearings are respectively arranged on the three planet gears, and the two first needle roller bearings of each group are respectively arranged in first bearing mounting grooves at two ends of the planet gears along the axial direction; the three planetary gears are respectively and rotatably arranged on the three gear rotating shafts, a first needle bearing on each planetary gear is in sliding fit with the gear rotating shafts, a gap is formed between a shaft hole of each planetary gear and the corresponding gear rotating shaft, an inner ring of the first needle bearing, close to a first limiting boss, on each planetary gear is abutted against the first limiting boss, three first locking bolts are respectively arranged on the three gear rotating shafts, each first locking bolt is abutted against the inner ring of the first needle bearing, far away from the first limiting boss, on the corresponding planetary gear, the two second needle bearings are sleeved on the transmission output shaft, the two second needle bearings are respectively positioned on two sides of the second limiting bosses, the internal gear ring is fixedly arranged in the gear ring fixing seat, and the fixing plate is fixedly connected with the bottom end of the reduction box body; one end of the transmission output shaft penetrates through a through hole at the bottom end of the shaft fixing seat and extends into the reduction box body, the transmission output shaft penetrates through the first oil seal ring and is in interference fit with the first oil seal ring, the two second needle roller bearings are embedded into the shaft fixing seat, an outer ring of the second needle roller bearing close to the bottom end of the shaft fixing seat is abutted against the third limiting boss, the other end of the transmission output shaft penetrates through a shaft through hole of the fixing seat gland to expose the shaft fixing seat, and an outer ring of the second needle roller bearing close to the fixing seat gland is abutted against the fourth limiting boss; a connecting boss is arranged at one end of the transmission output shaft extending into the reduction box body, the connecting boss penetrates through a mounting hole in the circular mounting boss, the circular mounting boss and the connecting boss are matched with the key groove through keys to synchronously rotate, and the transmission output shaft abuts against one end of the circular mounting boss; the second locking bolt is arranged at one end of the connecting boss penetrating into the mounting hole, the second locking bolt abuts against the triangular rotating disc, and the three planetary gears are meshed and matched with the sun gear and the internal tooth gear ring simultaneously; simple structure, cooperation precision, long service life.

A third oil seal groove is formed in one end, close to the second needle bearing, of the fixed seat gland in the axial direction, a third oil seal ring is arranged in the third oil seal groove and in interference fit with the third oil seal groove, and the third oil seal ring is sleeved on the transmission output shaft; through the oil seal ring, prevent that the cooling oil in the reduction box from oozing outward.

A second oil seal groove is formed in the bottom end of the reduction box body and is coaxially arranged with an output shaft through hole in the bottom end of the reduction box body, a second oil seal ring is arranged in the second oil seal groove and is sleeved on the output shaft of the coupler, and a second oil seal gland is arranged at the top end of the second oil seal groove and is abutted against the second oil seal ring; through the oil seal ring, the cooling oil in the speed reducing box is prevented from permeating into the coupler box body.

The inner wall of the top end of the reduction box body is inwards formed with a leakage-proof groove, one end of the reduction box cover, which is close to the reduction box body in the axial direction, is provided with a leakage-proof boss matched with the leakage-proof groove of the inner wall of the top end of the reduction box body, the bottom of the leakage-proof groove is provided with a sealing washer, and the leakage-proof boss is embedded into the leakage-proof groove and tightly presses the sealing washer; further preventing the cooling oil in the reduction box body from leaking outwards.

A fourth oil seal groove is formed inwards at one end of the reduction box cover, which is close to the reduction box body along the axial direction, along the axial line, a fourth oil seal ring is arranged in the fourth oil seal groove, the fourth oil seal ring is sleeved on the transmission output shaft, a fourth oil seal gland is arranged at the groove top of the fourth oil seal groove, and the fourth oil seal gland abuts against the fourth oil seal ring; and the cooling oil in the reduction box body is prevented from leaking outwards.

The controller is provided with a display and a control button; the start and stop of the cooling assembly are controlled, and the cooling assembly is simple, convenient and easy to operate.

The utility model has the advantages that: by adopting the technical proposal of the utility model, the speed-reducing and speed-regulating permanent magnet coupler is provided, and by the speed-reducing component, the rotating speed output by the permanent magnet coupler is adjusted, so that the rotating speed finally output by the utility model is adjusted, and the rotating speed is adjusted by matching the filter device, the micro negative pressure pump and the two cooling devices, when the permanent magnet coupler operates and radiates heat to the surrounding air, the miniature negative pressure pump is utilized to generate negative pressure, the air in the coupler installation cavity is pumped out and passes through the two cooling devices, cooling the extracted air, returning the cooled air to the coupler installation cavity to complete heat exchange of the permanent magnet coupler, reducing the temperature of the permanent magnet coupler, passing through a filtering device, dust impurities and moisture in the air are filtered, so that electric elements inside the permanent magnet coupler are prevented from being damaged, and the service life of the permanent magnet coupler is prolonged.

Drawings

Fig. 1 is an axial view of the overall structure of the present invention.

Fig. 2 is an axial explosion structural view of the coupler housing 1 of the present invention.

Fig. 3 is a partial enlarged view of a portion a of fig. 2.

Fig. 4 is a front view of the present invention.

Fig. 5 is a cross-sectional view taken at B-B in fig. 4.

Fig. 6 is a partial enlarged view of fig. 5 at C.

Fig. 7 is a partial enlarged view of fig. 5 at D.

Fig. 8 is a cross-sectional view taken at E-E of fig. 5.

Fig. 9 is a rear view of the present invention.

Fig. 10 is a cross-sectional view at F-F in fig. 9.

Fig. 11 is a partial enlarged view at L in fig. 10.

Fig. 12 is a cross-sectional view at G-G in fig. 9.

Fig. 13 is a partial enlarged view at K in fig. 12.

Fig. 14 is a partial enlarged view of fig. 12 at N.

Fig. 15 is a left side view of the present invention.

Fig. 16 is a cross-sectional view taken at P-P in fig. 15.

Wherein: 1-coupler box body, 1 a-upper box body, 1 b-lower box body, 2-permanent magnet coupler, 2 a-coupler output shaft, 2 b-coupler input shaft, 2 c-driving rotor carrier, 3-reduction box body, 3 a-second oil seal groove, 3 b-second oil seal ring, 3 c-second oil seal gland, 4-reduction box cover, 4 a-shaft fixing seat, 4 b-first oil seal groove, 4 c-first oil seal ring, 4 d-first connecting flange, 4 e-third limiting boss, 5-controller, 6-fixing seat gland, 6 a-fourth limiting boss, 6 b-third oil seal groove, 6 c-third oil seal ring, 7-partition plate, 8-miniature negative pressure pump, 9-water tank, 10-water tank cover, 11-air pipe, 12-refrigeration piece, 13-heat conduction piece, 14-sealing piece, 15-air channel, 16-straight joint, 17-filter tank, 17 a-air pipe joint, 18-filter tank cover, 19-filter medium, 20-first air pipe, 21-exhaust joint, 22-second air pipe, 23-third air pipe, 24-fourth air pipe, 25-fifth air pipe, 26-air inlet joint, 27-transmission output shaft, 27 a-second limit boss, 27 b-connecting boss, 28-sun gear, 29-planetary gear, 29 a-first bearing installation groove, 30-first needle roller bearing, 31-first locking bolt, 32-triangular rotating disc, 32 a-gear rotating shaft, 32 b-a first limiting boss, 32 c-a circular mounting boss, 32 d-a mounting hole, 33-a second locking bolt, 34-an internal gear ring, 35-a gear ring fixing seat, 35 a-a fixing plate, 36-a second needle bearing, 37-a leakage-proof groove, 38-a leakage-proof boss, 39-a sealing gasket, 41-an air flow disturbance tube, 42-a wave-shaped cooling fin, 43-a fourth oil seal groove, 44-a fourth oil seal ring and 45-a fourth oil seal gland.

Detailed Description

The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings in the embodiments of the present invention.

It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements can be directly connected or indirectly connected through an intermediate medium, and the two elements can be communicated with each other, so that the specific meaning of the terms in the invention can be understood by those skilled in the art.

Example 1

As shown in fig. 1 and fig. 2, a rear-mounted large-torque speed-reducing and speed-regulating permanent magnet coupler comprises a coupler housing 1, a permanent magnet coupler 2, a cooling assembly, a speed-reducing housing 3, a speed-reducing housing cover 4, a speed-reducing assembly and a controller 5, wherein the permanent magnet coupler 2 is arranged in the coupler housing 1, a coupler output shaft 2a and a coupler input shaft 2b of the permanent magnet coupler 2 are respectively exposed out of two ends of the coupler housing 1, the cooling assembly is arranged in the coupler housing 1, the controller 5 is electrically connected with the permanent magnet coupler 2, the speed-reducing housing 3 is cylindrical, the bottom end of the speed-reducing housing 3 is connected with one end of the coupler housing 1 close to the coupler output shaft 2a, an output shaft through hole is arranged at the bottom end of the speed-reducing housing 3, the coupler output shaft 2a penetrates through the output shaft through hole at the bottom end of the speed-reducing housing 3 and extends into the speed-reducing housing 3, the speed-reducing assembly is arranged in the speed-reducing housing 3, the speed reduction assembly is connected with the coupler output shaft 2a, the speed reduction box cover 4 is fixedly arranged at the top end of the speed reduction box body 2, cooling oil is arranged in the speed reduction box body 3, one end of the speed reduction assembly is exposed out of the speed reduction box cover 4, and the controller 5 is fixedly arranged on the coupler box body 1;

in this embodiment, the permanent magnet coupler 2 is a product known in the art, and can be purchased directly.

As shown in fig. 7, the one end of the reduction box cover 4 that is far away from the reduction box body 3 along the axial direction is equipped with the shaft fixing seat 4a of outside shaping, the shaft fixing seat 4a is the drum, the bottom of the shaft fixing seat 4a is equipped with the through-hole that runs through the reduction box cover 4 along the axial direction, the bottom of the shaft fixing seat 4a is equipped with first oil seal groove 4b, be equipped with first oil seal circle 4c in the first oil seal groove 4b, the bottom of the shaft fixing seat 4a is equipped with the spacing boss 4e of third along the border that is close to the lateral wall, the top of the shaft fixing seat 4a is equipped with first connecting flange 4d, there is fixing seat gland 6 through bolted connection on the first connecting flange 4d, fixing seat gland 6 is equipped with an axle through hole along the axis, the outside shaping of one end that fixing seat gland 6 is close to the shaft fixing seat 4a is equipped with the spacing boss 6a of fourth.

As shown in fig. 10, 11, 12, 13 and 14, the coupler housing 1 includes an upper housing 1a and a lower housing 1b, and a joint between an upper end of the upper housing 1a and a lower end of the lower housing 1b is sealed by silicone; the inner edge of the upper box body 1a is provided with two partition plates 7, the two partition plates 7 divide the interior of the upper box body 1a into three cavities, the three cavities comprise two cooling cavities and a coupler installation cavity, the structure of the lower box body 1b is completely the same as that of the upper box body 1a, the partition plates 7 in the lower box body 1b and the upper box body 1a correspond to each other, and a gap between the lower box body 1b and the partition plates 7 in the upper box body 1a is sealed through silica gel adhesion, so that the coupler installation cavity is isolated from the two cooling cavities;

the cooling assembly comprises a filtering device, a miniature negative pressure pump 8 and two cooling devices, the filtering device is arranged in one cooling cavity in the lower box body 1b, one cooling device is arranged in the other cooling cavity in the lower box body 1b, the other cooling device is arranged in one cooling cavity in the upper box body 1a, the miniature negative pressure pump 8 is fixedly arranged in the cooling cavity in the upper box body 1a, the miniature negative pressure pump 8 is electrically connected with the controller 5, and the controller 5 can control the start and stop of the miniature negative pressure pump 8;

the cooling device comprises a water tank 9, a water tank cover 10, an air pipe 11, a refrigerating sheet 12 and a plurality of heat conducting sheets 13, wherein the water tank 9, the air pipe 11 and the plurality of heat conducting sheets 13 are all made of heat conducting metal;

in this embodiment, the refrigeration sheet 12 is a product known in the art and can be purchased directly;

the water tank 9 is a tank body with an opening at one end, the water tank cover 10 is fixedly arranged at the opening end of the water tank 9, a contact surface gap between the water tank cover 10 and the water tank 9 is sealed through silica gel, the refrigerating sheet 12 is fixedly arranged inside the water tank 9, cooling liquid is arranged in the water tank 9, the refrigerating sheet 12 is electrically connected with the controller 5, the refrigerating sheet 12 is started through the controller 5, the refrigerating sheet 12 is refrigerated after being electrified, so that the cooling liquid in the water tank 9 is cooled, after the cooling liquid is cooled, one side wall of the water tank 9 connected with the air pipe 11 is cooled, one side wall of the air pipe 11 connected with the water tank 9 is cooled, the plurality of heat conducting sheets 13 are synchronously cooled, and air flowing through the air duct 15 exchanges heat with one side wall of the water tank 9 through the heat conducting sheets 13 and the air pipe 11, so as to be cooled;

one end of the water tank 9 in the thickness direction is fixedly connected with the partition plate 7 through a bolt, the air pipe 11 is a rectangular hollow pipe, one end of the air pipe 11 in the thickness direction is fixedly connected with one end of the water tank 9 in the thickness direction, and the air pipe 11 is preferably connected with the water tank 9 through welding; the heat conducting fins 13 are arranged in the air duct 11 side by side along the length direction of the air duct 11, the length direction of the heat conducting fins 13 is parallel to the width direction of the air duct 11, the length of the heat conducting fins 13 is smaller than the width of the air duct 11, the heat conducting fins 13 are welded and sealed with the inner contact surface of the air duct 11, two sealing sheets 14 are fixedly arranged at the two ends of the air duct 11 along the width direction, the sealing sheets 14 are welded and sealed with the air duct 11, one end of each heat conducting fin 13 along the length direction is welded with one sealing sheet 14, and every two adjacent heat conducting fins 13 are connected with different sealing sheets 14, namely the inside of the air duct 11 is divided into an S-shaped corrugated passage by the combination of the heat conducting fins 13 and the sealing sheets 14, the S-shaped corrugated passage is defined as the air duct 15, the air flowing into the air duct 11 flows from one end of the air duct 15 to the other end of the air duct 15 along the path of the air duct 15, and the time of air heat exchange flowing into the air duct 11 is prolonged, the two sealing pieces 14 are provided with straight joints 16 corresponding to the two ends of the air duct 15, the straight joints 16 enable the air duct 15 to be communicated with an external air duct, and the two straight joints 16 are respectively positioned on the upper side and the lower side of the sealing pieces 14 in the vertical direction;

the filtering device comprises a filtering box 17, a filtering box cover 18 and a filtering medium 19, wherein the filtering box 17 is a rectangular open box body, the filtering medium 19 is arranged in the filtering box 17, the filtering box cover 18 is arranged at the open end of the filtering box 17, and a gap at the joint between the filtering box cover 18 and the filtering box 17 is sealed by a sealant, so that air flowing into the filtering box 17 is prevented from flowing out from the gap at the joint between the filtering box 17 and the filtering box cover 18; the upper side of one side end and the lower side of the other side end of the filter box 17 along the length direction are respectively provided with an air pipe joint 17 a;

in this embodiment, the filter medium 19 is a product known in the filtering field and can be purchased directly, and in this embodiment, a filter material capable of removing dust and moisture is preferred;

in the cooling device in the lower box body 1b, a straight joint 16 which is arranged below the lower box body 1b in the vertical direction is connected with an exhaust joint 21 through a first air pipe 20, the exhaust joint 21 is fixedly arranged on a partition plate 7 which is arranged in the lower box body 1b and is closest to the straight joint 16 in the cooling device, one end of the exhaust joint 21 penetrates through the partition plate 7 and extends into a coupler installation cavity of the lower box body 1b, and the exhaust joint 21 is arranged on the lower side of the partition plate 7, so that the cold air is heavy in quality and is not easy to float upwards, the exhaust joint 21 is arranged on the lower side of the partition plate 7, the exhausted air after cooling is positioned at the lower end of the coupler installation cavity, and the air is prevented from being exhausted and sucked into a cooling assembly again;

in the cooling device in the lower box body 1b, a second air pipe 22 is connected to a straight joint 16 above in the vertical direction, the free end of the second air pipe 22 penetrates through two clapboards 7 in the lower box body 1b to be connected with an air pipe joint 17a on the lower side of one side end of a filter box 17 in the length direction, the second air pipe 22 is arranged close to the bottom end in the lower box body 1b, and a gap between the second air pipe 22 and the contact surfaces of the two clapboards 7 is sealed through silica gel;

an air pipe joint 17a at the upper side of the other side end of the filter box 17 in the length direction is connected with an air outlet of the miniature negative pressure pump 8 through a third air pipe 23, and an air inlet of the miniature negative pressure pump 8 is connected with a straight-through joint 16 which is arranged below the upper box body 1a in the vertical direction through a fourth air pipe 24; a fifth air pipe 25 is connected to the upper straight joint 16 in the upper box 1a in the vertical direction, the free end of the fifth air pipe 25 is connected with an air inlet joint 26, the air inlet joint 26 is fixedly arranged on the partition plate 7 which is closest to the straight joint 16 in the upper box 1a, and one end of the air inlet joint 26 penetrates through the partition plate 7 and extends into the coupler installation cavity of the upper box 1a, so that the hot air is light in weight and easy to float upwards, and the air inlet joint 26 is installed above the coupler installation cavity and can absorb the hot air quickly;

the permanent magnet coupler 2 is rotatably arranged in the coupler mounting cavities of the upper box body 1a and the lower box body 1 b;

the cooling assembly works as follows:

the controller 5 controls the micro negative pressure pump 8 and the refrigerating fins 12 in the two groups of cooling assemblies to be started, the air inlet of the micro negative pressure pump 8 generates negative pressure, so that the fourth air pipe 24 generates negative pressure, the air duct 15 in the cooling device arranged in the upper box body 1a generates negative pressure, the fifth air pipe 25 generates negative pressure, after the fifth air pipe 25 generates negative pressure, hot air floating up and above the coupler installation cavity is absorbed through the air inlet joint 26, the hot air flows into the air duct 15 of the cooling device in the upper box body 1a through the fifth air pipe 25, the refrigerating fins 12 are powered for refrigeration, so that the cooling liquid in the water tank 9 is cooled, after the cooling liquid is cooled, the cooling air duct on one side wall of the water tank 9 connected with the air duct 11 is cooled, the cooling air duct on one side wall of the water tank 11 connected with the water tank 9 is cooled, the plurality of heat conducting fins 13 are synchronously cooled, and the air flowing through the cooling fins 15 exchanges heat with one side wall of the water tank 9 through the heat conducting fins 13 and the air duct 11, therefore, the flowing hot air is cooled, the air after primary cooling flows into the fourth air pipe 24 through the other end of the air duct 15 of the cooling assembly in the upper box body 1a, flows into the micro negative pressure pump 8 through the fourth air pipe 24, flows into the third air pipe 23 through the exhaust port of the micro negative pressure pump 8, flows into the filter box 17 through the third air pipe 23, is dedusted and dehumidified through the filter medium 19 in the filter box 17, is guided into the air duct 15 in the cooling device in the lower box body 1b through the second air pipe 22, and flows through the first air pipe 20 and is discharged into the lower end of the coupler installation cavity in the lower box body 1b through the exhaust joint 21 after secondary cooling.

Two driving rotor carriers 2c are arranged in the permanent magnet coupler 2, the driving rotor carriers 2c are circular plates, one end of each driving rotor carrier 2c, which is far away from the other driving rotor carrier 2c, is provided with a plurality of airflow turbulence tubes 41, the airflow turbulence tubes 41 absorb part of heat on the driving rotor carriers 2c, when the permanent magnet coupler 2 rotates, the two driving rotor carriers 2c rotate synchronously, when the two driving rotor carriers 2c rotate, the airflow turbulence tubes 41 rotate synchronously along with the driving rotor carriers 2c, the airflow turbulence tubes 41 enable the air near the driving rotor carriers 2c to pass through the interior of the airflow turbulence tubes 41, take away the heat transferred from the driving rotor carriers 2c to the airflow turbulence tubes 41, enhance the air fluidity near the driving rotor carriers 2c, and enhance the heat exchange effect between the air near the driving rotor carriers 2c and the driving rotor carriers 2c, namely, the heat dissipation effect is enhanced;

the air flow disturbance tube 41 is a tube with two open ends formed by splicing a plurality of insulating heat-conducting metal flat plates, one side end of the air flow disturbance tube 41 is fixedly connected with the active rotor carrier 2c, the air flow disturbance tube 41 is uniformly arranged along the circumferential direction of the active rotor carrier 2c at intervals, two ends of the air flow disturbance tube 41 along the length direction are rectangular openings, the lengths of the rectangular openings at the two ends are the same, the widths of the rectangular openings at the two ends are different, the width M of the opening at one end is 1.5 times of the width H of the opening at the other end, air flows into the air flow disturbance tube 41 from the end with the larger opening of the air flow disturbance tube 41 and flows out from the end with the smaller opening of the air flow disturbance tube 41, the air is slightly compressed in the air flow disturbance tube 41, the heat exchange effect with the air flow disturbance tube 41 is enhanced, and the heat dissipation effect of the air flow disturbance tube 41 is enhanced;

both ends of each air flow turbulence pipe 41 in the length direction are arranged along the circumferential direction, the direction from one end with the width M to one end with the width H of each air flow turbulence pipe 41 on one active rotor carrier 2c is clockwise, the direction from one end with the width M to one end with the width H of each air flow turbulence pipe 41 on the other active rotor carrier 2c is anticlockwise, the directions of the air flow turbulence pipes 41 on the two active rotor carriers 2c from the large opening to the small opening are opposite, and the air flow turbulence pipes can adapt to the forward rotation and the reverse rotation of the permanent magnet coupler 2;

a plurality of wavy cooling fins 42 are arranged on the inner wall of one side end of each airflow turbulence tube 41 connected with the active rotation carrier 2c, the wavy cooling fins 42 conduct the heat of the airflow turbulence tube 41, and the plurality of wavy cooling fins 42 increase the instantaneous contact area with the air in the airflow turbulence tube 41, so that the heat dissipation efficiency is improved.

As shown in fig. 5, 6 and 8, the speed reduction assembly includes a transmission output shaft 27, a sun gear 28, three planetary gears 29, six first needle bearings 30, three first lock bolts 31, a triangular rotating disk 32, a second lock bolt 33, an internally toothed ring gear 34, a ring gear holder 35 and two second needle bearings 36; a second limiting boss 27a which is formed outwards is arranged at the middle section of the transmission output shaft 27 along the axial direction; two ends of each planetary gear 29 in the axial direction are symmetrically provided with first bearing installation grooves 29a which are formed inwards, three vertex angles of the triangular rotating disc 32 are provided with gear rotating shafts 32a, one end of each gear rotating shaft 32a, which is close to the triangular rotating disc 32, is provided with a first limiting boss 32b, the geometric center of the triangular rotating disc 32 is provided with a circular installation boss 32c which is formed outwards, and an installation hole 32d is formed in the axial direction of the circular installation boss 32 c; the gear ring fixing seat 35 is a circular tube, and one end of the gear ring fixing seat 35 in the axial direction is provided with a fixing plate 35 a;

the sun gear 28 is fixedly arranged on the coupler output shaft 2a, the six first needle roller bearings 30 are divided into three groups in pairs, the three groups of first needle roller bearings 30 are respectively arranged on the three planet gears 29, and each group of two first needle roller bearings 30 are respectively arranged in the first bearing installation grooves 29a at the two ends of the planet gears 29 along the axial direction; the three planetary gears 29 are respectively rotatably arranged on the three gear rotating shafts 32a, the first needle bearing 30 on each planetary gear 29 is in sliding fit with the gear rotating shaft 32a, a gap is reserved between the shaft hole of each planetary gear 29 and the corresponding gear rotating shaft 32a, and the planetary gear 29 rotates on the gear rotating shaft 32a by using the first needle bearing 30 to avoid friction between the planetary gear 29 and the gear rotating shaft 32 a;

the inner ring of the first needle bearing 30 on each planetary gear 29, which is close to the first limit boss 32b, abuts against the first limit boss 32b, the three first locking bolts 31 are respectively arranged on the three gear rotating shafts 32a, each first locking bolt 31 abuts against the inner ring of the first needle bearing 30 on the corresponding planetary gear 29, which is far away from the first limit boss 32b, and the inner ring of the first needle bearing 30 abuts against the first limit boss 32b and the first locking bolt 31, so that when the planetary gear 29 rotates, no contact exists between the first limit boss 32b and the first locking bolt 31, and friction between the planetary gear 29 and the first limit boss 32b and the first locking bolt 31 is avoided when the planetary gear 29 rotates;

the two second needle bearings 36 are sleeved on the transmission output shaft 27, the two second needle bearings 36 are respectively positioned at two sides of the second limiting boss 27a, the internal gear ring 34 is fixedly arranged in the gear ring fixing seat 35, and the fixing plate 35a is fixedly connected with the bottom end of the reduction box body 3 through bolts; one end of the transmission output shaft 27 passes through the through hole at the bottom end of the shaft fixing seat 4a and extends into the reduction box body 3, the transmission output shaft 27 penetrates through the first oil seal ring 4c and is in interference fit with the first oil seal ring 4c, the two second needle roller bearings 36 are embedded into the shaft fixing seat 4a, the outer ring of the second needle roller bearing 36 close to the bottom end of the shaft fixing seat 4a is abutted against the third limiting boss 4e, the other end of the transmission output shaft 27 penetrates through the shaft through hole of the fixing seat pressing cover 6 to expose the shaft fixing seat 4a, the outer ring of the second needle roller bearing 36 close to the fixing seat pressing cover 6 is abutted against the fourth limiting boss 6a, the two second needle roller bearings 36 are matched with the limiting boss 27a, meanwhile, the two second needle bearings 36 are respectively matched with the third limiting boss 4e and the fourth limiting boss 6a to limit the axial sliding of the transmission output shaft 27, so that the transmission output shaft 27 only rotates along the circumferential direction;

a connecting boss 27b is arranged at one end of the transmission output shaft 27 extending into the reduction box body 3, the connecting boss 27b penetrates through a mounting hole 32d on a circular mounting boss 32c, the circular mounting boss 32c and the connecting boss 27b are matched with a key groove through a key to synchronously rotate, and the transmission output shaft 27 abuts against one end of the circular mounting boss 32 c; the second locking bolt 33 is arranged at one end of the connecting boss 27b penetrating into the mounting hole 32d, the second locking bolt 33 abuts against the triangular rotating disc 32, and the triangular rotating disc 32 is axially and fixedly connected with the transmission output shaft 27 through the second locking bolt 33; and the three planet gears 29 are meshed with the sun gear 28 and the internal tooth ring gear 34 simultaneously; when the sun gear 28 is driven by the coupler output shaft 2a to rotate, the sun gear 28 drives the three planetary gears 29 to synchronously rotate, the three planetary gears 29 are limited by the internal gear ring 34, when the three planetary gears 29 rotate, the three planetary gears 29 need to rotate in the circumferential direction by taking the axis of the transmission output shaft 27 as the rotation axis, when the three planetary gears 29 rotate in the circumferential direction, the triangular rotating disc 32 is driven to rotate, when the triangular rotating disc 32 rotates, the transmission output shaft 27 is driven to rotate, and the rotation speed output by the permanent magnet coupler 2 can be adjusted by adjusting the transmission ratio between the planetary gears 29 and the sun gear 28.

The fixing base gland 6 is provided with a third oil seal groove 6b along the inward molding of one end of the second needle bearing 36 in the axial direction, a third oil seal ring 6c is arranged in the third oil seal groove 6b, the third oil seal ring 6c is in interference fit with the third oil seal groove 6b, the third oil seal ring 6c is sleeved on the transmission output shaft 27, the third oil seal ring 6c prevents external dust from entering the shaft fixing base 4a, and meanwhile, the oil in the shaft fixing base 4a can be prevented from leaking outwards.

A second oil seal groove 3a is formed in the bottom end of the reduction box body 3 and is axially arranged away from one end of the coupler box body 1, a second oil seal ring 3b is arranged in the second oil seal groove 3a, the second oil seal ring 3b is sleeved on the coupler output shaft 2a, a second oil seal gland 3c is arranged at the top end of the second oil seal groove 3a, the second oil seal gland 3c abuts against the second oil seal ring 3b, and the second oil seal ring 3b can prevent cooling oil in the reduction box body 3 from infiltrating into the coupler box body 1;

the inner wall at 3 tops of reduction box is equipped with leak protection groove 37 to the shaping inwards, and the one end that reduction box lid 4 is close to reduction box 3 along the axial is equipped with the leak protection boss 38 with the leak protection groove 37 matched with of the inner wall on 3 tops of reduction box, and leak protection groove 37 bottom is equipped with seal ring 39, and in leak protection boss 38 embedding leak protection groove 37 to sticis seal ring 39, prevent the outside seepage in clearance of cooling oil process junction between reduction box lid 4 and the reduction box 3 in the reduction box 3.

A fourth oil seal groove 43 is formed inwards along the axial line at one end of the reduction box cover 4 close to the reduction box body 3 along the axial direction, a fourth oil seal ring 44 is arranged in the fourth oil seal groove 43, the fourth oil seal ring 44 is sleeved on the transmission output shaft 27, a fourth oil seal gland 45 is arranged at the groove top of the fourth oil seal groove 43, the fourth oil seal gland 45 abuts against the fourth oil seal ring 44, and the fourth oil seal ring 44 can prevent cooling oil in the reduction box body 3 from permeating into the shaft fixing seat 4 a;

the controller 5 is provided with a display and a control button; the circuit of the micro negative pressure pump 8 and the refrigerating sheets 12 in the two cooling devices is controlled to be switched on and off through the cooperation of the display and the control button;

the using process of the embodiment is as follows: the coupler input shaft 2b is connected with a power source and driven to rotate by the power source, the permanent magnet coupler 2 drives the coupler output shaft 2a to rotate, the coupler output shaft 2a rotates to drive the sun gear 28 to rotate, the sun gear 28 drives the three planetary gears 29 to synchronously rotate, the three planetary gears 29 are limited by the internal gear ring 34, when rotating, the three planetary gears 29 need to rotate in the circumferential direction by taking the axis of the transmission output shaft 27 as a rotating axis, when the three planetary gears 29 rotate in the circumferential direction, the triangular rotating disc 32 is driven to rotate, and when the triangular rotating disc 32 rotates, the transmission output shaft 27 is driven to rotate;

the permanent magnet coupler 2 can generate a large amount of heat in the working process, when the permanent magnet coupler 2 rotates, two active rotor carriers 2c rotate synchronously, when the two active rotor carriers 2c rotate, the airflow disturbance tube 41 rotates synchronously along with the active rotor carriers 2c, the airflow disturbance tube 41 enables the air near the active rotor carriers 2c to pass through the interior of the airflow disturbance tube 41, takes away the heat transferred from the active rotor carriers 2c to the airflow disturbance tube 41, enhances the air fluidity near the active rotor carriers 2c, enhances the heat exchange effect between the air near the active rotor carriers 2c and the active rotor carriers 2c, the inner wall of one side end of each airflow disturbance tube 41 connected with the active rotor carriers 2c is provided with a plurality of wave-shaped cooling fins 42, the wave-shaped cooling fins 42 conduct the heat of the airflow disturbance tube 41, and the plurality of wave-shaped cooling fins 42 increase the instantaneous contact area with the air in the airflow disturbance tube 41, improve the heat dissipation efficiency

The cooling assembly is activated by the controller 5,

the cooling assembly works as follows:

The above embodiment is only for explaining the technical idea of the present invention, and the protection scope of the present invention can not be limited thereby, and any changes made on the basis of the technical solution according to the technical idea of the present invention all fall into the protection scope of the present invention.

Claims

1. The rear large-torque speed reduction and regulation type permanent magnet coupler is characterized by comprising a coupler box body (1), a permanent magnet coupler (2), a cooling assembly, a reduction box body (3), a reduction box cover (4), a speed reduction assembly and a controller (5), wherein the permanent magnet coupler (2) is arranged in the coupler box body (1), a coupler output shaft (2 a) and a coupler input shaft (2 b) of the permanent magnet coupler (2) are respectively exposed out of two ends of the coupler box body (1), the cooling assembly is arranged in the coupler box body (1), the controller (5) is electrically connected with the permanent magnet coupler (2), the reduction box body (3) is cylindrical, the bottom end of the reduction box body (3) is connected with one end, close to the coupler output shaft (2 a), of the coupler box body (1), an output shaft via hole is formed in the bottom end of the reduction box body (3), and the coupler output shaft (2 a) penetrates through the via hole in the output shaft at the bottom end of the reduction box body (3) to extend into the reduction box body (2 3) The speed reduction assembly is arranged in the speed reduction box body (3) and is connected with the coupler output shaft (2 a), the speed reduction box cover (4) is fixedly arranged at the top end of the speed reduction box body (3), one end of the speed reduction assembly is exposed out of the speed reduction box cover (4), and the controller (5) is fixedly arranged on the coupler box body (1);

one end of the reduction box cover (4) far away from the reduction box body (3) along the axial direction is provided with an outward-formed shaft fixing seat (4 a), the shaft fixing seat (4 a) is a cylinder, the bottom end of the shaft fixing seat (4 a) is provided with a through hole which axially penetrates through the reduction box cover (4), the bottom end of the shaft fixing seat (4 a) is provided with a first oil seal groove (4 b), a first oil seal ring (4 c) is arranged in the first oil seal groove (4 b), a third limiting boss (4 e) is arranged at the bottom end of the shaft fixing seat (4 a) along the edge close to the side wall, a first connecting flange (4 d) is arranged at the top end of the shaft fixing seat (4 a), a fixing seat gland (6) is connected to the first connecting flange (4 d), a shaft through hole is formed in the fixing seat gland (6) along the axis, and a fourth limiting boss (6 a) is formed at one end, close to the shaft fixing seat (4 a), of the fixing seat gland (6) in an outward forming mode;

the coupler box body (1) comprises an upper box body (1 a) and a lower box body (1 b), two partition plates (7) are arranged on the inner edge of the upper box body (1 a), the two partition plates (7) divide the interior of the upper box body (1 a) into three cavities, the three cavities comprise two cooling cavities and a coupler mounting cavity, the structures of the lower box body (1 b) and the upper box body (1 a) are completely the same, the lower box body (1 b) and the partition plates (7) in the upper box body (1 a) correspond to each other, and gaps between the lower box body (1 b) and the partition plates (7) in the upper box body (1 a) are sealed through gluing;

the cooling assembly comprises a filtering device, a miniature negative pressure pump (8) and two cooling devices, the filtering device is arranged in a cooling cavity in the lower box body (1 b), one cooling device is arranged in the other cooling cavity in the lower box body (1 b), the other cooling device is arranged in one cooling cavity in the upper box body (1 a), the miniature negative pressure pump (8) is fixedly arranged in the cooling cavity in which the cooling device is arranged in the upper box body (1 a), and the miniature negative pressure pump (8) is electrically connected with the controller (5);

the cooling device comprises a water tank (9), a water tank cover (10), an air pipe (11), a refrigerating fin (12) and a plurality of heat conducting fins (13), wherein the water tank (9), the air pipe (11) and the heat conducting fins (13) are all made of heat conducting metal;

the water tank (9) is a tank body with an opening at one end, the water tank cover (10) is fixedly arranged at the opening end of the water tank (9), the refrigerating sheet (12) is fixedly arranged in the water tank (9), and the refrigerating sheet (12) is electrically connected with the controller (5); one end of the water tank (9) along the thickness direction is fixedly connected with the partition plate (7), the air pipe (11) is a rectangular hollow pipe, one end of the air pipe (11) along the thickness direction is fixedly connected with one end of the water tank (9) along the thickness direction, a plurality of heat-conducting fins (13) are arranged in the air pipe (11) side by side along the length direction of the air pipe (11), the length direction of the heat-conducting fins (13) is parallel to the width direction of the air pipe (11), the length of the heat-conducting fins (13) is smaller than the width of the air pipe (11), the heat-conducting fins (13) and the contact surface inside the air pipe (11) are welded and sealed, two sealing pieces (14) are fixedly arranged at two ends of the air pipe (11) along the width direction, the sealing pieces (14) and the air pipe (11) are welded and sealed, one end of each heat-conducting fin (13) along the length direction is welded with one sealing piece (14), and every two adjacent heat-conducting fins (13) are connected with different sealing pieces (14), the air duct (11) is divided into an S-shaped corrugated channel by combining a plurality of heat conducting fins (13) and sealing fins (14), the S-shaped corrugated channel is defined as an air duct (15), through joints (16) are arranged on the two sealing fins (14) at positions corresponding to two ends of the air duct (15), and the two through joints (16) are respectively positioned at the upper side and the lower side of the sealing fins (14) in the vertical direction;

the filtering device comprises a filtering box (17), a filtering box cover (18) and a filtering medium (19), wherein the filtering box (17) is a rectangular open box body, the filtering medium (19) is arranged in the filtering box (17), the filtering box cover (18) is arranged at the open end of the filtering box (17), a gap at the joint between the filtering box cover (18) and the filtering box (17) is sealed by a sealant, and an air pipe joint (17 a) is arranged on the upper side of one side end and the lower side of the other side end of the filtering box (17) along the length direction;

in the cooling device in the lower box body (1 b), a straight joint (16) below the lower straight joint in the vertical direction is connected with an exhaust joint (21) through a first air pipe (20), the exhaust joint (21) is fixedly arranged in the lower box body (1 b) and on a partition plate (7) which is closest to the straight joint (16) in the cooling device, one end of the exhaust joint (21) penetrates through the partition plate (7) and extends into a coupler installation cavity of the lower box body (1 b), and the exhaust joint (21) is arranged on the lower side of the partition plate (7); in the cooling device in the lower box body (1 b), a second air pipe (22) is connected to a through joint (16) above in the vertical direction, the free end of the second air pipe (22) penetrates through two partition plates (7) in the lower box body (1 b) to be connected with an air pipe joint (17 a) on the lower side of one side end of a filter box (17) in the length direction, and the second air pipe (22) is arranged close to the bottom end in the lower box body (1 b);

an air pipe joint (17 a) on the upper side of the other side end of the filter box (17) in the length direction is connected with an exhaust port of the miniature negative pressure pump (8) through a third air pipe (23), and an air inlet of the miniature negative pressure pump (8) is connected with a straight-through joint (16) on the lower side in the vertical direction in the upper box body (1 a) through a fourth air pipe (24); a fifth air pipe (25) is connected to the upper straight joint (16) in the upper box body (1 a) in the vertical direction, the free end of the fifth air pipe (25) is connected with an air inlet joint (26), the air inlet joint (26) is fixedly arranged on a partition plate (7) which is closest to the straight joint (16) in the upper box body (1 a), and one end of the air inlet joint (26) penetrates through the partition plate (7) and extends into a coupler mounting cavity of the upper box body (1 a);

the permanent magnet coupler (2) is rotatably arranged in coupler mounting cavities of the upper box body (1 a) and the lower box body (1 b).

2. The rear large-torque speed reduction and regulation type permanent magnet coupler according to claim 1, is characterized in that: two active rotor carriers (2 c) are arranged in the permanent magnet coupler (2), the active rotor carriers (2 c) are circular plates, one end, far away from the other active rotor carrier (2 c), of each active rotor carrier (2 c) is provided with a plurality of airflow disturbance tubes (41), each airflow disturbance tube (41) is a tube which is formed by splicing a plurality of insulating heat-conducting metal flat plates and is provided with openings at two ends, one side end of each airflow disturbance tube (41) is fixedly connected with the active rotor carrier (2 c), the airflow disturbance tubes (41) are uniformly arranged along the circumferential direction of the active rotor carrier (2 c) at intervals, the two ends of each airflow disturbance tube (41) along the length direction are rectangular openings, the lengths of the rectangular openings at the two ends are the same, the widths of the rectangular openings at the two ends are different, the width M of the opening at one end is 1.5 times of the width H of the opening at the other end, and the two ends of each airflow disturbance tube (41) along the length direction are arranged along the circumferential direction, and each air flow turbulence pipe (41) on one active rotor carrier (2 c) is clockwise from one end with the width M to one end with the width H, and each air flow turbulence pipe (41) on the other active rotor carrier (2 c) is anticlockwise from one end with the width M to one end with the width H.

3. The rear large-torque speed reduction and regulation type permanent magnet coupler according to claim 2, is characterized in that: and a plurality of wavy radiating fins (42) are arranged on the inner wall of one side end of each air flow turbulence pipe (41) connected with the active rotor carrier (2 c).

4. The rear large-torque speed reduction and regulation type permanent magnet coupler according to claim 1, is characterized in that: the speed reducing assembly comprises a transmission output shaft (27), a sun gear (28), three planetary gears (29), six first needle bearings (30), three first locking bolts (31), a triangular rotating disc (32), a second locking bolt (33), an internal gear ring (34), a gear ring fixing seat (35) and two second needle bearings (36); a second limiting boss (27 a) which is molded outwards is arranged at the middle section of the transmission output shaft (27) along the axial direction; the two ends of each planetary gear (29) in the axial direction are symmetrically provided with first bearing installation grooves (29 a) which are formed inwards, gear rotating shafts (32 a) are arranged at three top corners of the triangular rotating disc (32), one end, close to the triangular rotating disc (32), of each gear rotating shaft (32 a) is provided with a first limiting boss (32 b), a circular installation boss (32 c) which is formed outwards is arranged at the geometric center of the triangular rotating disc (32), and an installation hole (32 d) is formed in the axial direction of the circular installation boss (32 c); the gear ring fixing seat (35) is a circular tube, and a fixing plate (35 a) is arranged at one axial end of the gear ring fixing seat (35).

5. The rear large-torque speed reduction and regulation type permanent magnet coupler according to claim 4, wherein: the sun gear (28) is fixedly arranged on the coupler output shaft (2 a), every two of the six first needle roller bearings (30) are divided into three groups, the three groups of first needle roller bearings (30) are respectively arranged on the three planet gears (29), and each group of two first needle roller bearings (30) are respectively arranged in first bearing mounting grooves (29 a) at two ends of the planet gears (29) along the axial direction; the three planetary gears (29) are respectively rotatably arranged on the three gear rotating shafts (32 a), a first needle bearing (30) on each planetary gear (29) is in sliding fit with the gear rotating shafts (32 a), a gap is formed between the shaft hole of each planetary gear (29) and the corresponding gear rotating shaft (32 a), an inner ring of the first needle bearing (30) on each planetary gear (29) close to the first limiting boss (32 b) is abutted against the first limiting boss (32 b), the three first locking bolts (31) are respectively arranged on the three gear rotating shafts (32 a), each first locking bolt (31) is abutted against an inner ring of the first needle bearing (30) on the corresponding planetary gear (29) far away from the first limiting boss (32 b), and the two second needle bearings (36) are sleeved on the transmission output shaft (27), the two second needle bearings (36) are respectively positioned at two sides of the second limiting boss (27 a), the internal gear ring (34) is fixedly arranged in the gear ring fixing seat (35), and the fixing plate (35 a) is fixedly connected with the bottom end of the reduction box body (3); one end of the transmission output shaft (27) penetrates through a through hole at the bottom end of the shaft fixing seat (4 a) and extends into the reduction box body (3), the transmission output shaft (27) penetrates through the first oil seal ring (4 c) and is in interference fit with the first oil seal ring (4 c), the two second needle roller bearings (36) are embedded into the shaft fixing seat (4 a), the outer ring of the second needle roller bearing (36) close to the bottom end of the shaft fixing seat (4 a) is abutted against the third limiting boss (4 e), the other end of the transmission output shaft (27) penetrates through a shaft through hole of the fixing seat gland (6) and is exposed out of the shaft fixing seat (4 a), and the outer ring of the second needle roller bearing (36) close to the fixing seat gland (6) is abutted against the fourth limiting boss (6 a); a connecting boss (27 b) is arranged at one end of the transmission output shaft (27) extending into the reduction box body (3), the connecting boss (27 b) penetrates through a mounting hole (32 d) in the circular mounting boss (32 c), the circular mounting boss (32 c) and the connecting boss (27 b) are matched with the key groove through a key to synchronously rotate, and the transmission output shaft (27) abuts against one end of the circular mounting boss (32 c); the second locking bolt (33) is arranged at one end of the connecting boss (27 b) penetrating into the mounting hole (32 d), the second locking bolt (33) abuts against the triangular rotating disc (32), and the three planetary gears (29) are simultaneously meshed and matched with the sun gear (28) and the internal tooth ring gear (34).

6. The rear large-torque speed reduction and regulation type permanent magnet coupler according to claim 3, wherein: and a third oil seal groove (6 b) is formed in one end, close to the second needle bearing (36), of the fixing seat gland (6) along the axial direction, a third oil seal ring (6 c) is arranged in the third oil seal groove (6 b), the third oil seal ring (6 c) is in interference fit with the third oil seal groove (6 b), and the third oil seal ring (6 c) is sleeved on the transmission output shaft (27).

7. The rear large-torque speed reduction and regulation type permanent magnet coupler according to claim 1, is characterized in that: the bottom of reduction box (3) is equipped with second oil seal groove (3 a) along the inside shaping of the one end that the axial was kept away from coupler box (1), and the coaxial setting of output shaft via hole of second oil seal groove (3 a) and reduction box (3) bottom, be equipped with second oil seal circle (3 b) in second oil seal groove (3 a), and on coupler output shaft (2 a) was located in second oil seal circle (3 b) cover, the top of second oil seal groove (3 a) was equipped with second oil seal gland (3 c), and second oil seal gland (3 c) offset with second oil seal circle (3 b).

8. The rear large-torque speed reduction and regulation type permanent magnet coupler according to claim 1, is characterized in that: the inside shaping of inner wall on reduction box (3) top is equipped with leak protection groove (37), and the one end that reduction box lid (4) are close to reduction box (3) along the axial is equipped with leak protection groove (37) matched with leak protection boss (38) with the inner wall on reduction box (3) top, and leak protection groove (37) bottom is equipped with seal ring (39), leak protection boss (38) embedding leak protection groove (37) are in to sticis seal ring (39).

9. The rear large-torque speed reduction and regulation type permanent magnet coupler according to claim 1, is characterized in that: one end of the reduction box cover (4) close to the reduction box body (3) along the axial direction is provided with a fourth oil seal groove (43) along the axial line in an inward forming mode, a fourth oil seal ring (44) is arranged in the fourth oil seal groove (43), the fourth oil seal ring (44) is sleeved on the transmission output shaft (27), a fourth oil seal gland (45) is arranged at the top of the fourth oil seal groove (43), and the fourth oil seal gland (45) is abutted to the fourth oil seal ring (44).

10. The rear large-torque speed reduction and regulation type permanent magnet coupler according to claim 1, is characterized in that: and a display and a control button are arranged on the controller (5).