CN214499922U

CN214499922U - Speed reducer

Info

Publication number: CN214499922U
Application number: CN202022978544.9U
Authority: CN
Inventors: 贡林欢; 罗利敏; 郭树生; 孙佳路
Original assignee: Ningbo Zhongda Leader Intelligent Transmission Co ltd
Current assignee: Ningbo Zhongda Leader Intelligent Transmission Co ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-10-26
Anticipated expiration: 2030-12-09

Abstract

The application relates to a speed reducer, belongs to the transmission field, including driving motor, one-level reduction gears and second grade reduction gears, one-level reduction gears with second grade reduction gears all adopts cycloid reduction gears. The cycloidal speed reducing mechanism has the advantages of compact structure and small size, and because effective contact of each component in the cycloidal speed reducing mechanism is more, the transmission efficiency is more ideal.

Description

Speed reducer

Technical Field

The application relates to the field of transmission devices, in particular to a speed reducer.

Background

The speed reducer is an independent device formed by combining a motor and a speed reducing mechanism, and has the advantages of stable rotating speed, large output torque and the like. Because of the above advantages, the speed reducer is widely used in a solar power generation system for driving a solar panel to rotate along with the rise and fall of the sun. Among them, a reducer used in a solar power generation system generally employs a combination of a driving motor, a planetary gear reducer, and a worm gear reducer. In view of the above-mentioned related art, the inventors consider that the speed reducer has a drawback of being bulky.

SUMMERY OF THE UTILITY MODEL

In order to reduce the volume of the speed reducer, the application provides the speed reducer.

The application provides a speed reducer adopts following technical scheme:

a speed reducer comprises a driving motor, a primary speed reducing mechanism and a secondary speed reducing mechanism, wherein the primary speed reducing mechanism and the secondary speed reducing mechanism both adopt cycloid speed reducing mechanisms.

Through adopting above-mentioned technical scheme, first order reduction gears and second grade reduction gears all adopt cycloid reduction gears, compare in traditional planetary gear reducer and the mode of turbine worm reduction gear combination, have reduced the volume of speed reducer, have reduced the manufacturing cost of speed reducer. And the effective contact of each component in the cycloid speed reducing mechanism is more, so that the transmission efficiency is more ideal.

Optionally, the secondary speed reducing mechanism comprises a mounting seat, a secondary input shaft, a secondary output assembly and a secondary cycloid disc assembly for transmitting the torque input by the secondary input shaft to the secondary output assembly;

the mounting base is provided with a mounting hole, and the inner wall of the mounting hole is uniformly provided with two-stage fixing convex teeth at intervals along the circumferential direction;

the secondary input shaft is in transmission connection with the primary speed reducing mechanism and is provided with a secondary first crankshaft part and a secondary first crankshaft part;

the secondary output assembly comprises at least one secondary output ring; the secondary output ring is rotatably mounted between the mounting seat and the secondary input shaft; the secondary output ring is provided with at least two secondary cycloid shafts at intervals in the circumferential direction of the end face facing the secondary cycloid disc assembly;

the secondary cycloid disc assembly comprises a secondary first cycloid disc rotatably mounted on the secondary first crankshaft part, a secondary second cycloid disc rotatably mounted on the secondary second crankshaft part, and a secondary cycloid sleeve for the insertion and matching of the secondary cycloid shaft;

the side wall of the second-stage first cycloid disc is circumferentially provided with a circle of second-stage first cycloid convex teeth which can be meshed with the second-stage fixed convex teeth, and the second-stage first cycloid disc is provided with a second-stage first cycloid hole which is used for the insertion of the second-stage cycloid sleeve and has an outer diameter larger than that of the second-stage cycloid sleeve;

and a circle of second-stage second cycloid discs capable of being meshed with the second-stage fixed convex teeth are arranged on the circumferential direction of the side wall of each second-stage second cycloid disc, and each second-stage second cycloid disc is provided with a second-stage second cycloid hole for the insertion of the second-stage cycloid sleeve and the outer diameter of the second-stage second cycloid hole is larger than that of the second-stage cycloid sleeve.

Through adopting above-mentioned technical scheme, the second grade input shaft transmits the moment of torsion to second grade cycloid dish subassembly, and second grade cycloid dish subassembly is owing to the limited of the fixed dogtooth of second grade in the mount pad to through the cooperation of second grade cycloid sleeve and cycloid axle, carry the moment of torsion to in the second grade output ring, finally transmit the moment of torsion to solar power system by second grade output ring in. The two-stage speed reducing mechanism has ideal speed reducing ratio and compact structure, is beneficial to reducing the volume of the speed reducer and reducing the production cost of the speed reducer.

Optionally, the secondary output assembly includes two secondary output rings, and the two secondary output rings are a secondary first output ring and a secondary second output ring respectively; the second grade cycloid dish subassembly is located the first output ring of second grade with between the second grade second output ring, the first output ring of second grade is equipped with the confession the first transmission jack of the one end male second grade of second grade cycloid axle, the second grade second output ring is equipped with the confession the other end male second transmission jack of second grade cycloid axle.

Through adopting above-mentioned technical scheme, above-mentioned second grade reduction gears has two second grade output rings for the speed reducer has two output ports, thereby can drive two sets of solar panel and rotate. And because pass through the second grade pendulum line axle between the first output ring of second grade and the second output ring for the rotation of both is comparatively synchronous, makes the rotation synchronization rate of two sets of solar panel also comparatively ideal.

Optionally, the secondary output assembly further comprises a secondary first locking screw connecting the secondary first output ring and the secondary second output ring; the second-stage first cycloid disc is provided with a first through hole for the second-stage first locking screw to pass through, and the second-stage second cycloid disc is provided with a second through hole for the second-stage first locking screw to pass through; in the operation process of the two-stage speed reducing mechanism, the two-stage first locking screw does not interfere with the first through hole, and the two-stage first locking screw does not interfere with the second through hole.

Through adopting above-mentioned technical scheme, connect through the first lock screw of second grade between the first output ring of second grade and the second output ring of second grade, help promoting the degree of synchronism of both rotations. Because the secondary cycloid disc assembly is arranged between the secondary first output ring and the secondary second output ring, the mechanism in the mounting hole is locked by locking the secondary first output ring and the secondary second output ring, and the probability of dislocation of components in the mounting hole is reduced.

Optionally, a secondary protection sleeve is sleeved outside the secondary first locking screw, and two ends of the secondary protection sleeve respectively abut against the side wall of the secondary first output ring and the side wall of the secondary second output ring.

Through adopting above-mentioned technical scheme, the probability that the screw thread of second grade locking screw caused damage to second grade first cycloid dish and second cycloid dish has been helped reducing to the second grade protective sleeve section of thick bamboo.

Optionally, the second-stage first output ring has a second-stage first mounting portion extending toward the outer side of the mounting seat, and the speed reducer is further provided with a first output cylinder mounted on the second-stage first mounting portion; the second grade second output ring has towards the second grade second installation department that the mount pad outside extends, the speed reducer still is equipped with to fix and installs the second output section of thick bamboo at second grade second installation department.

Through adopting above-mentioned technical scheme, the settlement of first output section of thick bamboo and second output section of thick bamboo is the extension to two second grade output ring structures to the equipment between solar panel support and the above-mentioned speed reducer has been made things convenient for. Every group solar panel support all has an installation pipe of being connected with the speed reducer, when carrying out the equipment of above-mentioned speed reducer and solar panel support, can with the installation pipe suit at first output cylinder or second output cylinder to carry out the circumference locking between them, can accomplish the equipment of above-mentioned speed reducer and solar panel support, this kind of mounting means simple structure, simple to operate.

Optionally, the primary speed reducing mechanism comprises a primary input shaft, a primary fixed frame, a primary cycloid disc assembly and a primary movable frame;

the primary input shaft is in transmission connection with a motor output shaft of the driving motor and is provided with a primary crankshaft part;

the primary cycloid disc assembly is rotatably arranged on the primary crankshaft part; the outer side wall of the primary cycloid disc assembly is provided with a circle of primary first cycloid convex teeth and a circle of primary second cycloid convex teeth at intervals;

the primary fixing frame is provided with a primary first cycloid groove, and a circle of primary first fixing convex teeth capable of being meshed with the primary first cycloid convex teeth are arranged on the inner wall of the primary first cycloid groove in the circumferential direction;

the primary movable frame is provided with a primary second cycloid groove, and a circle of primary second fixed convex teeth capable of being meshed with the primary second cycloid convex teeth are arranged on the inner wall of the primary second cycloid groove in the circumferential direction; the first-stage movable frame is also provided with a first-stage output part matched with the second-stage input shaft.

Through adopting above-mentioned technical scheme, on the one-level input shaft transmitted the moment of torsion to one-level cycloid assembly, through the first cycloid dogtooth of one-level first in one-level cycloid assembly and the first fixed dogtooth of one-level mount injectd to through the cooperation of the fixed dogtooth of one-level second cycloid dogtooth and the one-level second of one-level movable frame in one-level cycloid assembly, make the moment of torsion can carry out the output through one-level output part. Above-mentioned one-level reduction gears can realize the second grade through the speed reduction of the first cycloid dogtooth of one-level and the first fixed dogtooth of one-level and the speed reduction of the fixed dogtooth of one-level second cycloid dogtooth and one-level second for the speed reduction effect is comparatively ideal, can also keep one-level reduction gears compact structure degree, helps reducing the volume of speed reducer, has reduced the manufacturing cost of speed reducer.

Optionally, the primary fixing frame is mounted on the secondary second output ring.

Through adopting above-mentioned technical scheme, install the one-level mount on second grade second output ring for the one-level mount need not install subaerial, makes whole speed reducer only install fixedly through the mount pad, has made things convenient for the installation of speed reducer, and makes the cooperation compactness of one-level reduction gears and second grade reduction gears, helps reducing the volume of speed reducer, has reduced the manufacturing cost of speed reducer.

Optionally, the primary cycloid disc assembly comprises a primary first cycloid disc, a primary second cycloid disc and a primary first locking screw for connecting the primary first cycloid disc and the primary second cycloid disc; the first-stage first cycloid convex teeth are arranged on the outer side wall of the first-stage first cycloid disc; the first-stage second cycloid convex teeth are arranged on the outer side of the first-stage second cycloid disc.

Through adopting above-mentioned technical scheme, one-level cycloid dish assembly is passed through the first locking screw locking cooperation of one-level by the first speed reduction dish of one-level and one-level second speed reduction dish, helps simplifying the production and processing of one-level cycloid dish assembly.

Optionally, the primary output part is an annular primary output ring, and a secondary internal spline is arranged on the inner wall of the primary output ring; the end part of the secondary input shaft extends into the primary output ring, and the end part of the secondary input shaft is provided with a secondary external spline matched with the secondary internal spline.

Through adopting above-mentioned technical scheme, the transmission of moment of torsion is realized to the cooperation that one-level output ring and second grade input shaft adopted second grade internal spline and second grade external spline, and the mode transmission efficiency of this kind of moment of torsion transmission is higher, and the transmission is comparatively stable.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the primary speed reducing mechanism and the secondary speed reducing mechanism are both in the mode of the cycloid speed reducing mechanism, so that the size of the speed reducer is reduced, the production cost of the speed reducer is reduced, and the transmission efficiency of the speed reducer is more ideal due to more effective contact of each component in the cycloid speed reducing mechanism;

2. two secondary output rings are arranged on the secondary speed reducing mechanism, so that two groups of solar panels can be driven to rotate, and the synchronism of the two groups of solar panels is ideal;

3. the first-stage speed reducing mechanism has ideal structure compactness, is beneficial to reducing the volume of the speed reducer and reducing the production cost of the speed reducer;

4. the first-level fixing frame of the first-level speed reducing mechanism is fixed on the second-level first output ring, so that the speed reducer is fixed on the ground only through the mounting seat, the mounting of the speed reducer is facilitated, and the matching compactness of the first-level speed reducing mechanism and the second-level speed reducing mechanism is also improved.

Drawings

Fig. 1 is an exploded schematic view of a drive motor, a primary speed reduction mechanism, and a secondary speed reduction mechanism in the present application.

Fig. 2 is a schematic structural diagram of a drive motor in the present application.

Fig. 3 is a schematic sectional structure view of a one-stage reduction mechanism in the present application.

Fig. 4 is an exploded view of a primary cycloid disc assembly of the present application.

Fig. 5 is an exploded view of the primary mount of the present application.

FIG. 6 is a schematic view of the assembly of the drive motor and the primary reduction mechanism of the present application;

fig. 7 is an exploded view of a primary mobile frame of the present application.

Fig. 8 is a schematic structural view of the two-stage reduction mechanism of the present application without the first output cylinder and the second output cylinder.

Fig. 9 is a schematic structural diagram of the mount in the present application.

Fig. 10 is an exploded schematic view of the two-stage speed reducing mechanism in the present application.

Fig. 11 is a schematic diagram of the structure of the second stage first output ring in the present application.

Fig. 12 is an assembly schematic diagram of the primary speed reducing mechanism and the secondary speed reducing mechanism in the present application.

Fig. 13 is a schematic structural view of the two-stage reduction mechanism of the present application, to which the first output cylinder and the second output cylinder are attached.

Description of reference numerals: 1. a drive motor; 11. mounting a plate; 12. an output shaft of the motor; 121. a primary external spline; 13. a first-stage third locking screw; 2. a first-stage speed reduction mechanism; 21. a primary input shaft; 211. a primary input aperture; 212. a primary internal spline; 213. a primary crankshaft part; 214. a first-stage first bearing; 215. a primary second bearing; 216. a primary third bearing; 217. a first stage of support sleeve; 218. a primary second support sleeve; 22. a primary cycloid disc assembly; 221. a first cycloid disc of one level; 2211. a first-stage counter bore; 2212. a first stage first drive hole; 2213. a first bearing half-groove; 2214. a first cycloidal lobe; 222. a first-level second cycloid disc; 2221. a first threaded hole; 2222. a primary second drive aperture; 2223. a second bearing half-groove; 2224. a first-stage second cycloid convex tooth; 223. a first locking screw; 224. a first transmission shaft; 225. a first-stage first bearing groove; 23. a primary fixing frame; 231. a first-stage fixing ring; 2311. a primary second bearing groove; 2312. a primary first seal ring; 232. a first cycloidal outer ring of one stage; 2321. a first fixed tooth; 2322. mounting a counter bore; 2323. a first pin hole; 233. a first-stage second locking screw; 234. a first swing groove; 235. mounting screws; 236. installing a bolt; 24. a first-stage movable frame; 241. a primary movable ring; 2411. a first-stage fourth counter bore; 2412. a primary third drive aperture; 2413. a primary output loop; 24131. a secondary internal spline; 242. a first-stage second cycloid outer ring; 2421. a first-stage fourth threaded hole; 2422. a first-stage fourth transmission hole; 2423. a first-stage second fixed convex tooth; 243. a first-stage fourth locking screw; 244. a primary second transmission shaft; 245. a first-stage second swing groove; 3. a secondary speed reducing mechanism; 31. a mounting seat; 311. mounting holes; 312. installing a convex ring; 3121. a needle rolling groove; 3122. fixing the roller pins; 313. a second-stage roller pin; 314. an installation part; 3141. strip-shaped counter bores; 315. a secondary first seal groove; 316. a secondary second seal groove; 317. a secondary fixed convex tooth; 32. a secondary input shaft; 321. a secondary external spline; 322. a secondary first crankshaft part; 323. a secondary second crankshaft portion; 324. a secondary first inner bearing; 325. a secondary second inner bearing; 326. a second stage third inner bearing; 327. a second-stage fourth inner bearing; 3281. a secondary first support ring; 3282. a secondary second support ring; 3283. a secondary third support ring; 3284. a secondary fourth support ring; 33. a secondary cycloid disc assembly; 331. a second-level first cycloid disc; 3311. a second-level first cycloid hole; 3312. a second-stage first cycloid convex tooth; 3313. a first through hole; 332. a second-level cycloid disk; 3321. a second-level second cycloid hole; 3322. a second-stage second cycloid convex tooth; 3323. a second through hole; 333. a secondary cycloidal sleeve; 3331. a secondary cycloid jack; 34. a secondary output component; 341. a second-stage first output ring; 3411. a second-stage first transmission jack; 3412. a secondary first threaded hole; 3413. a second-stage first outer bearing groove; 3414. a secondary first mounting portion; 34141. a first mounting threaded hole; 34142. a second pin hole; 3415. a first limit ring groove; 3416. a first limit ring plate; 342. a secondary second output ring; 3421. a second stage second drive jack; 3422. a second-stage first counter bore; 3423. a secondary second outer bearing groove; 3424. a secondary second outer bearing; 3425. a second limit ring groove; 3426. a second limit ring plate; 3427. a secondary second mounting portion; 343. a secondary swing shaft; 344. a secondary first locking screw; 3441. a secondary protective sleeve; 345. a secondary first outer bearing; 346. a secondary first seal ring; 3471. a first output cartridge; 3472. a second output cartridge; 348. a secondary second seal ring; 349. and a secondary third seal ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-13.

The embodiment of the application discloses a speed reducer. The speed reducer is mainly applied to a solar power generation system and is matched with an installation pipe in a solar panel support.

Referring to fig. 1, the reduction gear includes a drive motor 1, a primary reduction mechanism 2, and a secondary reduction mechanism 3.

Referring to fig. 2, the end side wall of the motor output shaft 12 of the drive motor 1 is circumferentially provided with a primary external spline 121. The housing of the drive motor 1 is provided with a mounting plate 11 for mounting the drive motor at the end provided with the motor output shaft 12.

Referring to fig. 3, the primary speed reducing mechanism 2 includes a primary input shaft 21, a primary cycloid disc assembly 22, a primary fixed frame 23, and a primary movable frame 24.

Referring to fig. 2 and 3, the primary input shaft 21 is provided with a primary input hole 211 for insertion of the motor output shaft 12 of the driving motor 1. The first-stage input shaft 21 is provided with a first-stage internal spline 212 for engaging with the first-stage external spline 121 on the inner wall of the first-stage input hole 211, so that the torque output by the driving motor can be transmitted into the first-stage reduction mechanism 2 through the engagement of the first-stage external spline 121 and the first-stage internal spline 212.

Referring to fig. 3, the primary input shaft 21 is provided with a primary crankshaft part 213 at the middle. The primary crankshaft part 213 is circular in cross section, but the axis of the primary crankshaft part 213 does not coincide with the axis of the primary input shaft 21.

Referring to fig. 3, three bearings are fitted around the primary input shaft 21. The three bearings are respectively a first-stage first bearing 214 arranged on the first-stage crankshaft part 213, a second-stage bearing 215 arranged on one side of the first-stage crankshaft part 213 close to the driving motor, and a third-stage bearing 216 arranged on one side of the first-stage crankshaft part 213 far away from the driving motor. Wherein the rotation axis of the primary first bearing 214 coincides with the axis of the primary crankshaft part 213; the rotational axis of the primary second bearing 215 and the rotational axis of the primary third bearing 216 both coincide with the axis of the primary input shaft 21.

Referring to fig. 3, the primary input shaft 21 is further sleeved with a primary first support sleeve 217 and a primary second support sleeve 218. Wherein, the first supporting sleeve 217 is supported between the first bearing 214 and the second bearing 215, for making the clearance between the first bearing 214 and the second bearing 215 meet the requirement of the design clearance. The primary second support sleeve 218 is supported between the primary first bearing 214 and the primary third bearing 216 for allowing clearance between the primary first bearing 214 and the primary third bearing 216 to meet design clearance requirements.

Referring to fig. 3 and 4, the primary cycloid disc assembly 22 includes a primary first cycloid disc 221, a primary second cycloid disc 222, and a primary first locking screw 223 for connecting the primary first cycloid disc 221 and the primary second cycloid disc 222. The first-level first cycloid disk 221 and the second-level cycloid disk 222 are both in a disc-shaped cycloid disk structure. The first cycloid discs 221 of one level are positioned at one side close to the driving motor, and the outer diameter of the first cycloid discs 221 of one level is larger than that of the second cycloid discs 222 of one level.

Referring to fig. 3 and 4, the first-stage cycloidal disk 221 is circumferentially provided with a plurality of first-stage counter bores 2211 for mounting first-stage locking screws 223 at intervals on an end surface facing the driving motor. The end face of the first-stage second cycloid disc 222 is provided with first-stage threaded holes 2221 which correspond to the first-stage counter bores 2211 one to one and are used for threaded installation of the first-stage locking screws 223. After the first-stage first cycloid disc 221 and the second-stage second cycloid disc 222 are fixedly connected through the first-stage locking screw 223, the opposite end faces of the first-stage first cycloid disc 221 and the second-stage second cycloid disc 222 are attached, and the axes of the first-stage first cycloid disc 221 and the second-stage second cycloid disc 222 coincide with the axis of the first-stage crankshaft part 213. In the present embodiment, the primary cycloid disc assembly 22 is provided with three primary first locking screws 223, and the three primary first locking screws 223 are circumferentially and uniformly spaced.

Referring to fig. 3 and 4, the first-stage first cycloid discs 221 are further provided with first-stage first transmission holes 2212 at circumferential intervals on the end surface. The first-stage second cycloid disc 222 is provided at an end face with first-stage second transmission holes 2222 arranged in one-to-one correspondence with the first-stage first transmission holes 2212. The primary cycloid disc assembly 22 is further provided with a primary first transmission shaft 224 which is inserted into the primary first transmission hole 2212 and the primary second transmission hole 2222. In this embodiment, the aperture of the first-stage first driving hole 2212 and the aperture of the second-stage second driving hole 2222 are kept the same, and the outer diameter of the first-stage first driving shaft 224 is kept the same as the aperture of the first-stage first driving hole 2212 and the aperture of the second-stage second driving hole 2222. After being combined, the first-stage first transmission shaft 224 and the first-stage first locking screw 223 are uniformly arranged on the first-stage cycloid disc assembly 22 at intervals in the circumferential direction.

Referring to fig. 3 and 4, the primary first cycloid disc 221 and the primary second cycloid disc 222 are connected and combined by the primary first locking screw 223 to form the primary cycloid disc assembly 22. The primary cycloid disc assembly 22 has a primary first bearing slot 225 for mounting the primary first bearing 214. Wherein, the first-stage first bearing groove 225 comprises a first bearing half-groove 2213 arranged on the first-stage first cycloid disc 221 and a second bearing half-groove 2223 arranged on the first-stage second cycloid disc 222.

Referring to fig. 4, the first-stage first cycloid discs 221 are uniformly provided with a circle of first-stage first cycloid teeth 2214 in the circumferential direction of the outer side wall. The first-stage second cycloid discs 222 are uniformly provided with a circle of first-stage second cycloid convex teeth 2224 in the circumferential direction of the outer side wall. In this embodiment, the number of teeth of the first cycloidal lobe 2214 of one stage is 44; the number of teeth of the first-stage second cycloid convex teeth 2224 is 42.

Referring to fig. 3 and 5, the primary fixing frame 23 includes a primary fixing ring 231, a primary first cycloid outer ring 232, and a primary second locking screw 233 connecting the primary fixing ring 231 and the primary first cycloid outer ring 232. In the present embodiment, six primary second locking screws 233 are provided in the primary fixing frame 23.

Referring to fig. 3 and 5, the axis of the primary stationary ring 231 and the axis of the primary first cycloid outer ring 232 both coincide with the axis of the primary input shaft 21. The primary fixing ring 231 is provided at an inner side wall with a primary second bearing groove 2311 for mounting the primary second bearing 215. A first-stage first sealing ring 2312 is further disposed between the first fixing ring and the first-stage input shaft 21, and the first-stage first sealing ring 2312 is disposed on a side of the first-stage second bearing 215 close to the driving motor.

Referring to fig. 6, the mounting plate 11 of the driving motor 1 is fixed to the first-stage fixing ring 231 by a turn of the first-stage third locking screw 13. In the present embodiment, the number of the one-stage third locking screws 13 is six, and is circumferentially staggered from the one-stage second locking screws 233.

Referring to fig. 3 and 5, after the primary first cycloid outer ring 232 and the primary fixing ring 231 are connected and fixed by the primary second locking screw 233 to be combined into the primary fixing frame 23, a primary first cycloid groove 234 for arranging the primary first cycloid disc 221 is formed. The first-stage first cycloid groove 234 is provided with a circle of first-stage first fixed teeth 2321 at even intervals in the circumferential direction of the inner wall for meshing engagement with the first-stage first cycloid teeth 2214, that is, the first-stage first fixed teeth 2321 are arranged on the inner side wall of the first-stage first cycloid outer ring 232. In the present embodiment, the number of the first fixed teeth 2321 is 46.

Referring to fig. 3 and 7, the primary movable frame 24 includes a primary movable ring 241, a primary second cycloid outer ring 242, and a primary fourth locking screw 243 for connecting and fixing the primary movable ring 241 and the primary second cycloid outer ring 242.

Referring to fig. 3 and 7, the primary movable ring 241 is circumferentially provided with a plurality of primary fourth counter bores 2411 for mounting the primary fourth locking screws 243 at intervals on the end surface facing away from the driving motor 1. The end surface of the first-stage second cycloid outer ring 242 is provided with first-stage fourth threaded holes 2421 which correspond to the first-stage fourth counter bores 2411 one to one and are used for mounting first-stage fourth locking screws 243. In the present embodiment, the primary movable frame 24 is provided with three primary fourth locking screws 243.

Referring to fig. 3 and 7, the primary movable ring 241 is further provided with primary third transmission holes 2412 at intervals in the circumferential direction on the end surface. The end surface of the first-stage second cycloid outer ring 242 is further provided with first-stage fourth transmission holes 2422 which are arranged in one-to-one correspondence with the first-stage third transmission holes 2412 at intervals in the circumferential direction. The first-stage movable frame 24 is further provided with a first-stage second transmission shaft 244 which can be simultaneously inserted into the first-stage third transmission hole 2412 and the first-stage fourth transmission hole 2422. In the present embodiment, the aperture of the primary third driving hole 2412 and the aperture of the primary fourth driving hole 2422 are consistent, and the outer diameter of the primary second driving shaft 244 is consistent with the aperture of the primary third driving hole 2412 and the aperture of the primary fourth driving hole 2422. After being combined, the first-stage second transmission shaft 244 and the first-stage fourth locking screw 243 are uniformly arranged on the first-stage movable frame 24 at intervals in the circumferential direction.

Referring to fig. 3 and 7, after the first-stage second cycloid outer ring 242 and the first-stage movable ring 241 are connected and fixed by the first-stage fourth locking screw 243 to be combined into the first-stage movable frame 24, a first-stage second cycloid groove 245 for the arrangement of the first-stage second cycloid discs 222 is formed. The first-stage second cycloid groove 245 is provided with a circle of first-stage second fixed convex teeth 2423 for meshing and matching with the first-stage second cycloid convex teeth 2224 at uniform intervals in the circumferential direction of the inner wall, that is, the first-stage second fixed convex teeth 2423 are arranged on the inner side wall of the first-stage second cycloid outer ring 242. In the present embodiment, the number of teeth of the first-stage second fixed teeth 2423 is 44.

Referring to fig. 3, the primary movable ring 241 has a primary output ring 2413 coaxially disposed on an end surface facing away from the drive motor 1. Primary output ring 2413 has a secondary internal spline 24131 disposed on the inner wall.

Referring to fig. 8, the secondary speed reducing mechanism 3 includes a mount 31, a secondary input shaft 32, a secondary output assembly 34, and a secondary cycloid disc assembly 33 that transmits torque input by the secondary input shaft 32 to the secondary output assembly 34.

Referring to fig. 9, the mounting seat 31 has two mounting portions 314 symmetrically disposed at both sides of the bottom end of the mounting seat 31 for mounting. The mounting portion 314 is provided with a strip-shaped counter bore 3141 penetrating through the upper and lower surfaces of the mounting portion 314, and each mounting portion 314 is provided with two strip-shaped counter bores 3141.

Referring to fig. 9, the mounting seat 31 is provided with mounting holes 311 penetrating both end surfaces thereof and arranged coaxially with the primary input shaft 21. The mounting seat is provided with a mounting convex ring 312 on the inner wall circumference of the mounting hole 311. The mounting collar 312 is arranged coaxially with the mounting hole 311. The mounting collar 312 has needle grooves 3121 circumferentially and uniformly spaced on the inner sidewall. The needle groove 3121 is parallel to the axis of the mounting hole 311. Mounting collar 312 snaps fixed needle 3122 into needle groove 3121 to form a ring of secondary fixed teeth 317 on the inner surface of mounting collar 312. In the present embodiment, the number of teeth of the secondary fixed teeth 317 is 72.

Referring to fig. 3 and 8, a secondary input shaft 32 is rotatably mounted in the mount 31, and the rotation axis of the secondary input shaft 32 is arranged coaxially with the primary output ring 2413 in the primary speed reduction mechanism 2. One end of the secondary input shaft 32 close to the primary speed reduction mechanism 2 is inserted into the primary output ring 2413, and the end of the secondary input shaft 32 is further provided with a secondary external spline 321 for engaging with the secondary internal spline 24131.

Referring to fig. 8, the secondary input shaft 32 is provided with a secondary first crankshaft portion 322 and a secondary second crankshaft portion 323 in this order in the middle in a direction away from the primary speed reducing mechanism 2. The secondary first crankshaft part 322 and the secondary second crankshaft part 323 are both circular in cross section and have the same outer diameter. Wherein, the axis of the secondary first crankshaft part 322 and the axis of the secondary second crankshaft part 323 are not coincident with the axis of the secondary input shaft 32, and the axis of the secondary first crankshaft part 322 and the axis of the secondary second crankshaft part 323 are symmetrical with respect to the axis of the secondary input shaft 32.

Referring to fig. 8, four bearings are fitted over the secondary input shaft 32. The four bearings are respectively a second-stage first inner bearing 324 sleeved on the second-stage first crankshaft part 322, a second-stage second inner bearing 325 sleeved on the second-stage second crankshaft part 323, a second-stage third inner bearing 326 sleeved on one side of the first crankshaft part close to the first speed reducing mechanism, and a second-stage fourth inner bearing 327 sleeved on one side of the second crankshaft part far away from the first speed reducing mechanism. Wherein, the axis of the second-stage first inner bearing 324 coincides with the axis of the second-stage first crankshaft part 322; the axis of the secondary second inner bearing 325 coincides with the axis of the secondary second crankshaft part 323; the axis of the second-stage third inner bearing 326 and the axis of the second-stage fourth inner bearing 327 both coincide with the axis of the second-stage input shaft 32.

Referring to fig. 3 and 8, a secondary first support ring 3281, a secondary second support ring 3282, a secondary third support ring 3283 and a secondary fourth support ring 3284 are further sleeved on the secondary input shaft 32. The secondary first support ring 3281 is supported between the primary output ring 2413 and the inner race of the secondary third inner bearing 326 for allowing a clearance between the primary output ring 2413 and the secondary third inner bearing 326 to meet the design clearance requirement. The secondary second support ring 3282 is arranged between the inner ring of the secondary third inner bearing 326 and the inner ring of the secondary first inner bearing 324 for allowing a clearance between the secondary third inner bearing 326 and the secondary first inner bearing 324 to meet a design clearance requirement. The second-stage third support ring 3283 is supported between the inner ring of the second-stage first inner bearing 324 and the inner ring of the second-stage second inner bearing 325, for making the clearance between the second-stage first inner bearing 324 and the second-stage second inner bearing 325 meet the requirement of the design clearance. A secondary third support ring 3283 is supported between the inner race of the secondary second inner bearing 325 and the inner race of the secondary fourth bearing for allowing the clearance between the secondary second inner bearing 325 and the secondary fourth inner bearing 327 to meet the design clearance requirement.

Referring to fig. 8 and 10, the secondary cycloid disc assembly 33 includes a secondary first cycloid disc 331 installed outside the secondary first inner bearing 324 and a secondary second cycloid disc 332 installed outside the secondary second inner bearing 325, and a plurality of secondary cycloid sleeves 333 simultaneously engaged with the secondary first cycloid disc 331 and the secondary second cycloid disc 332. Wherein the axis of the secondary gerotor sleeve 333 is parallel to the axis of the secondary input shaft 32 and the secondary gerotor sleeve 333 has a coaxially arranged secondary gerotor socket 3331. In the present embodiment, the number of secondary gerotor sleeves 333 in the secondary gerotor disk assembly 33 is 12.

Referring to fig. 8 and 10, the second-stage first cycloid discs 331 are uniformly provided with second-stage first cycloid holes 3311 in the end surface circumferential direction. The second-stage first cycloid hole 3311 is for insertion of the second-stage cycloid sleeve 333, and the diameter of the second-stage first cycloid hole 3311 is larger than the outer diameter of the second-stage cycloid sleeve 333. The second-stage second cycloid discs 332 are provided at end faces with second-stage second cycloid holes 3321 corresponding to the second-stage first cycloid holes 3311 one to one. The secondary second cycloid hole 3321 is used for inserting the secondary cycloid sleeve 333, and the bore diameter of the secondary second cycloid hole 3321 is larger than the outer diameter of the secondary cycloid sleeve 333.

Referring to fig. 8 and 10, the second-stage first cycloid disc 331 is provided at an outer side wall with a ring of second-stage first cycloid teeth 3312 for meshing with the second-stage fixed teeth 317. The second-stage second cycloid discs 332 are provided with second-stage second cycloid teeth 3322 on the outer side walls for meshing with the second-stage fixed teeth 317. The number of teeth of the second-stage first cycloid convex teeth 3312 is the same as the number of teeth of the second-stage second cycloid convex teeth 3322. In this embodiment, the number of teeth of the second-stage first cycloid lobe 3312 is 71, and the number of teeth of the second-stage second cycloid lobe 3322 is also 71.

Referring to fig. 8 and 10, the secondary output assembly 34 includes a secondary first output ring 341 mounted outside the secondary third inner bearing 326, a secondary second output ring 342 mounted outside the secondary fourth inner bearing 327, a secondary cycloid shaft 343 connecting the secondary first output ring 341 and the secondary second output ring 342, and a secondary first locking screw 344 connecting and fixing the secondary first output ring 341 and the secondary second output ring 342. The secondary cycloid shaft 343 is in one-to-one correspondence with the secondary cycloid sleeve 333, and the secondary cycloid shaft 343 penetrates through the secondary cycloid sleeve 333 through the secondary cycloid insertion hole 3331.

Referring to fig. 8, a secondary first output ring 341 is provided on the side of the secondary cycloid disc assembly 33 adjacent to the primary reduction mechanism 2, and a secondary second output ring 342 is provided on the side of the secondary cycloid disc assembly 33 adjacent to the secondary reduction mechanism 3.

Referring to fig. 10 and 11, a secondary first transmission insertion hole 3411, which corresponds to the secondary cycloid shaft 343 one by one and into which an end of the secondary cycloid shaft 343 is inserted, is formed in the secondary first output ring 341 in a circumferential direction of an end surface facing the secondary cycloid disc assembly 33. A plurality of second-stage second transmission jacks 3421, which are in one-to-one correspondence with the second-stage cycloid shafts 343 and used for inserting the end parts of the second-stage cycloid shafts 343, are formed in the second-stage second output ring 342 in the circumferential direction of the end surface facing the second-stage cycloid disc assembly 33.

Referring to fig. 8 and 10, the end surface of the secondary second output ring 342 facing away from the secondary cycloid disc assembly 33 is provided with a secondary first counterbore 3422 for mounting the secondary first locking screw 344. The end surface of the secondary first output ring 341 facing the secondary gerotor disc assembly 33 is provided with secondary first threaded holes 3412 corresponding to the secondary first counter bores 3422 in a one-to-one manner and used for mounting the secondary first locking screws 344. In the present embodiment, the secondary output assembly 34 is provided with six secondary first locking screws 344.

Referring to fig. 8 and 10, a secondary protective sleeve 3441 is sleeved on the outer side of each of the secondary first locking screws 344. Both ends of the secondary protective sleeve 3441 abut against the sidewall of the secondary first output ring 341 and the sidewall of the secondary second output ring 342, respectively.

Referring to fig. 8 and 10, the second-stage first cycloid discs 331 are provided with first through holes 3313 through which the second-stage first locking screws 344 pass, the second-stage second cycloid discs 332 are provided with second through holes 3323 through which the second-stage first locking screws 344 pass, and in the operation process of the second-stage speed reducing mechanism 3, the second-stage protection sleeves 3441 outside the second-stage first locking screws 344 do not interfere with the edges of the first through holes 3313 and the edges of the second through holes 3323.

Referring to fig. 8, the secondary first output ring 341 further defines a secondary first outer bearing groove 3413 at an end of the outer sidewall adjacent to the secondary cycloid disc assembly 33. The second-stage first output ring 341 has a second-stage first outer bearing 345 fitted to the inner wall of the mounting hole 311, and mounted on the second-stage first outer bearing groove 3413. Wherein the outer ring of the second-stage first outer bearing 345 abuts against the side surface of the mounting convex ring 312. The second-stage first output ring 341 is further sleeved with a second-stage first sealing ring 346 outside the second-stage first outer bearing 345. Wherein the mount 31 is provided with a secondary first seal groove 315 in which a secondary first seal ring 346 is disposed.

The second-stage first output ring 341 also has a second-stage first mounting portion 3414 extending outward of the mount 31. The secondary first mounting portion 3414 has a ring-shaped configuration.

Referring to fig. 12, the outer edge of the first-stage first cycloid outer ring 232 is fitted to the end surface of the second-stage first mounting portion 3414, and the first-stage first cycloid outer ring 232 and the second-stage first mounting portion 3414 are connected by a mounting screw 235. The number of the mounting screws 235 is three, and the three mounting screws 235 are circumferentially uniformly arranged. Wherein, the outer edge part of the first-level first cycloid outer ring 232 is provided with mounting counterbores 2322 which correspond to the three mounting screws 235 one to one and are used for mounting the mounting screws 235. The end surface of the second-stage first mounting portion 3414 is provided with first mounting threaded holes 34141 which correspond to the mounting counterbores 2322 one to one and are in threaded fit with the mounting screws 235.

Referring to fig. 12, a mounting pin 236 is also provided for connection between the outer edge portion of the first one-stage cycloidal outer ring 232 and the second one-stage first mounting portion 3414. The first-stage first cycloid outer ring 232 has a first pin hole 2323 formed in an outer edge portion thereof through which the mounting pin 236 passes, and the second-stage first mounting portion 3414 has a second pin hole 34142 through which the mounting pin 236 is inserted. In this embodiment, the number of the mounting pins 236 between the first-stage first cycloid outer ring 232 and the second-stage first mounting portion 3414 is ten, and ten mounting pins 236 are circumferentially uniformly arranged.

Referring to fig. 13, the speed reducer is further provided with a first output cylinder 3471 which is sleeved on the second-stage first mounting portion 3414 and is used for mounting the mounting pipe of the solar panel support. The first output cylinder 3471 is fixed to the second-stage first mounting portion 3414 by bolts. After the installation pipe is installed at first output cylinder 3471, driving motor and one-level reduction gears 2 are in the installation pipe, can protect driving motor and one-level reduction gears 2 for the ability that the speed reducer can deal with complicated external environment obtains promoting, also can prolong the life of whole speed reducer effectively.

Referring to fig. 8, the second-stage first output ring 341 further has a first stopper ring groove 3415 formed in an inner edge of an end surface facing the first-stage reduction gear 2. The second-stage first output ring 341 has a first stopper ring plate 3416 mounted in the first stopper ring groove 3415 so as to abut against the outer race of the second-stage third inner bearing 326. The first stopper ring plate 3416 is fixed to a bottom surface of the first stopper ring groove 3415 by a screw.

Referring to fig. 8, the second-stage second output ring 342 further defines a second-stage second outer bearing groove 3423 at an end of the outer sidewall near the second-stage cycloid disc assembly 33. The second-stage second output ring 342 is mounted with a second-stage second outer bearing 2424 fitted to the inner wall of the mounting hole 311 on a second-stage second outer bearing groove 3423. Wherein the outer ring of the secondary second outer bearing 2424 abuts against the side surface of the mounting convex ring 312. The secondary second output ring 342 is further sleeved with a secondary second sealing ring 348 outside a secondary second outer bearing 2424. Wherein the mount 31 is provided with a secondary second seal groove 316 in which a secondary second seal ring 348 is disposed.

Referring to fig. 8, the second-stage second output ring 342 further has a second limiting ring groove 3425 formed on an inner side edge of the end surface facing away from the second-stage cycloid disc assembly 33. The second limit ring plate 3426 abutting against the outer race of the second-stage fourth inner bearing 327 is mounted in the first limit ring groove 3415 in the second-stage second output ring 342. The second stopper ring plate 3426 is fixed to the bottom surface of the second stopper ring groove 3425 by screws.

Referring to fig. 8, the two-stage speed reduction mechanism 3 is further provided with a two-stage third seal ring 349 between the second stopper ring plate 3426 and the two-stage input shaft 32. The outer side of the second-stage third seal ring 349 is circumferentially abutted against the second limit ring groove 3425, and the inner side of the second-stage third seal ring 349 is circumferentially abutted against the outer side wall of the second-stage input shaft 32.

Referring to fig. 8 and 13, the secondary second output ring 342 also has a secondary second mount portion 3427 extending outward of the mount 31. The secondary second mount portion 3427 has an annular configuration. The speed reducer is further provided with a second output cylinder 3472 which is sleeved on the second-stage second mounting part 3427 and used for mounting the mounting pipe of the solar panel support.

The implementation principle of this embodiment is as follows: the driving motor 1 finally drives the mounting pipe of the solar panel support to rotate through the first output cylinder 3471 and the second output cylinder 3472 by the speed reduction and the lifting output torque of the first speed reduction mechanism 2 and the second speed reduction mechanism 3, and the first speed reduction mechanism 2 and the second speed reduction mechanism 3 both adopt the cycloid speed reduction mechanism with higher structural compactness, so the volume of the speed reducer is reduced, and the production cost of the speed reducer is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A speed reducer, characterized in that: the speed reducer comprises a driving motor (1), a primary speed reducing mechanism (2) and a secondary speed reducing mechanism (3), wherein the primary speed reducing mechanism (2) and the secondary speed reducing mechanism (3) both adopt cycloid speed reducing mechanisms.

2. A reducer according to claim 1, wherein: the secondary speed reducing mechanism (3) comprises a mounting seat (31), a secondary input shaft (32), a secondary output assembly (34) and a secondary cycloid disc assembly (33) for transmitting the torque input by the secondary input shaft (32) to the secondary output assembly (34);

the mounting seat (31) is provided with a mounting hole (311), and the inner wall of the mounting hole (311) is uniformly provided with two-stage fixed convex teeth at intervals along the circumferential direction;

the secondary input shaft (32) is in transmission connection with the primary speed reducing mechanism (2), and the secondary input shaft (32) is provided with a secondary first crankshaft part (322) and a secondary second crankshaft part (323);

the secondary output assembly (34) comprises at least one secondary output ring; the secondary output ring is rotatably mounted between the mounting seat (31) and the secondary input shaft (32); at least two secondary cycloid shafts (343) are arranged on the secondary output ring at intervals in the circumferential direction on the end face facing the secondary cycloid disc assembly (33);

the secondary cycloid disc assembly (33) comprises a secondary first cycloid disc (331) rotatably mounted on the secondary first crankshaft part (322), a secondary second cycloid disc (332) rotatably mounted on the secondary second crankshaft part (323), and a secondary cycloid sleeve (333) in plug fit with the secondary cycloid shaft (343);

a circle of second-stage first cycloid teeth (3312) capable of being meshed with the second-stage fixed teeth is arranged on the circumferential direction of the side wall of the second-stage first cycloid disc (331), and the second-stage first cycloid disc (331) is provided with a second-stage first cycloid hole (3311) into which the second-stage cycloid sleeve (333) is inserted and of which the outer diameter is larger than that of the second-stage cycloid sleeve (333);

the second-stage second cycloid disc (332) is provided with a circle of second-stage second cycloid convex teeth (3322) capable of being meshed with the second-stage fixed convex teeth in the circumferential direction of the side wall, and the second-stage second cycloid disc (332) is provided with a second-stage second cycloid hole (3321) for inserting the second-stage cycloid sleeve (333) and with the outer diameter larger than that of the second-stage cycloid sleeve (333).

3. A reducer according to claim 2, wherein: the secondary output assembly (34) comprises two secondary output rings, namely a secondary first output ring (341) and a secondary second output ring (342); the secondary cycloid disc assembly (33) is located between the secondary first output ring (341) and the secondary second output ring (342), the secondary first output ring (341) is provided with a secondary first transmission jack (3411) for inserting one end of the secondary cycloid shaft (343), and the secondary second output ring (342) is provided with a secondary second transmission jack (3421) for inserting the other end of the secondary cycloid shaft (343).

4. A reducer according to claim 3, wherein: the secondary output assembly (34) further comprises a secondary first locking screw (344) connecting the secondary first output ring (341) and the secondary second output ring (342); the second-stage first cycloid disc (331) is provided with a first through hole (3313) for the second-stage first locking screw (344) to pass through, and the second-stage second cycloid disc (332) is provided with a second through hole (3323) for the second-stage first locking screw (344) to pass through; during the operation of the two-stage speed reducing mechanism (3), the two-stage first locking screw (344) does not interfere with the first through hole (3313), and the two-stage first locking screw (344) does not interfere with the second through hole (3323).

5. A reducer according to claim 4, wherein: a secondary protection sleeve (3441) is sleeved outside the secondary first locking screw (344), and two ends of the secondary protection sleeve (3441) are respectively abutted to the side wall of the secondary first output ring (341) and the side wall of the secondary second output ring (342).

6. A reducer according to claim 3, wherein: the two-stage first output ring (341) is provided with a two-stage first mounting part (3414) extending towards the outer side of the mounting seat (31), and the speed reducer is further provided with a first output cylinder (3471) mounted on the two-stage first mounting part (3414); the second-stage second output ring (342) is provided with a second-stage second mounting part (3427) extending towards the outer side of the mounting seat (31), and the speed reducer is further provided with a second output cylinder (3472) fixedly mounted on the second-stage second mounting part (3427).

7. A reducer according to claim 4, wherein: the primary speed reducing mechanism (2) comprises a primary input shaft (21), a primary fixed frame (23), a primary cycloid disc assembly (22) and a primary movable frame (24);

the primary input shaft (21) is in transmission connection with a motor output shaft (12) of the driving motor, and the primary input shaft (21) is provided with a primary crankshaft part (213);

the primary cycloid disc assembly (22) is rotatably mounted on the primary crankshaft part (213); the primary cycloid disc assembly (22) is provided with a circle of primary first cycloid convex teeth (2214) and a circle of primary second cycloid convex teeth (2224) at intervals on the outer side wall;

the primary fixing frame (23) is provided with a primary first cycloid groove (234), and a circle of primary first fixing convex teeth (2321) capable of being meshed with the primary first cycloid convex teeth (2214) are arranged on the inner wall of the primary first cycloid groove (234) in the circumferential direction;

the primary movable frame (24) is provided with a primary second cycloid groove (245), and a circle of primary second fixed convex teeth (2423) capable of being meshed with the primary second cycloid convex teeth (2224) are arranged on the inner wall of the primary second cycloid groove (245) in the circumferential direction; the primary movable frame (24) is also provided with a primary output part matched with the secondary input shaft (32).

8. A reducer according to claim 7, wherein: the primary fixing frame (23) is arranged on the secondary second output ring (342).

9. A reducer according to claim 7, wherein: the primary cycloidal disc assembly (22) comprises a primary first cycloidal disc (221), a primary second cycloidal disc (222) and a primary first locking screw (223) for connecting the primary first cycloidal disc (221) and the primary second cycloidal disc (222); the primary first cycloid teeth (2214) are arranged on the outer side wall of the primary first cycloid disc (221); the primary second cycloid teeth (2224) are arranged on the outer side of the primary second cycloid disc (222).

10. A reducer according to claim 7, wherein: the primary output part is an annular primary output ring (2413), and a secondary internal spline (24131) is arranged on the inner wall of the primary output ring (2413); the end part of the secondary input shaft (32) extends into the primary output ring (2413), and the end part of the secondary input shaft (32) is provided with a secondary external spline (321) matched with the secondary internal spline (24131).