CN113700803A

CN113700803A - Double-speed bidirectional speed reducing motor

Info

Publication number: CN113700803A
Application number: CN202111037634.0A
Authority: CN
Inventors: 肖尚读; 张坤
Original assignee: Hefei Yifeite Electronic Technology Co ltd
Current assignee: Hefei Yifeite Electronic Technology Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2021-11-26

Abstract

The invention discloses a double-speed bidirectional speed reducing motor, which relates to the technical field of agricultural plant protection unmanned aerial vehicles and comprises a brushless motor, wherein a first-stage speed reducer and a third-stage speed reducer are respectively arranged at two ends of the brushless motor, a clutch mechanism is arranged between a transmission shaft of the brushless motor and an input shaft of the first-stage speed reducer and the input shaft of the third-stage speed reducer, the clutch mechanism comprises a movable connecting seat and a fixed connecting seat, the movable connecting seat is in sliding connection with the input shaft of the speed reducer, the fixed connecting seat is fixedly connected with the fixed connecting seat, a plurality of connecting blocks are distributed on the circumference of the outer circumference of the movable connecting seat in an array manner, a plurality of connecting grooves for accommodating the connecting blocks are arranged in an inner hole of the fixed connecting seat, the connecting blocks are in sliding connection with positioning grooves, and a trigger mechanism is arranged on the fixed connecting seat and is used for driving the movable connecting seat to slide along the axial direction of the input shaft of the speed reducer, the practical range is wide.

Description

Double-speed bidirectional speed reducing motor

Technical Field

The invention belongs to the technical field of agricultural plant protection unmanned aerial vehicles, and particularly relates to a double-speed bidirectional speed reducing motor.

Background

Agricultural plant protection unmanned aerial vehicle is agricultural unmanned aerial vehicle, is the unmanned vehicles who is applied to the agricultural, and the purpose is the help and improves crops output and monitor crops growth. Its sensor and digital imaging ability can help the peasant to know their field more to help improving crop output and farm efficiency, unmanned aerial vehicle is usually less so that improve duration, and the output of current motor drives a reduction gear and rotates, and the effect of only one-way power transmission and single variable speed can't realize the effect of two-way power transmission and two-way different speed.

Chinese patent CN209462183U discloses a motor with a bidirectional output reducer, which comprises a motor body having two output shafts and a housing, wherein the output shafts pass through the housing, a driving gear is mounted on the output shafts, a slide rail is connected to the inner wall of the housing, a slide sleeve is slidably connected to the slide rail, a bearing seat is mounted on the slide sleeve, a reduction gear set is rotatably mounted on the bearing seat, the driving gear is engaged with the input end of the reduction gear set, a rotating shaft at the output end of the reduction gear set extends out of the housing, and a driving mechanism for driving the bearing seat to translate is mounted on the housing; when needs use the speed reduction function, then make the bearing frame translation through control actuating mechanism to make the driving gear be connected with the gear engagement of reduction gear set's input end department, then can regard the pivot as the output this moment, thereby realize the two-way output speed reduction function of motor, satisfy user's multiple needs demand. However, the double-speed bidirectional speed reducing motor has the following defects that the size is large, the whole weight is increased, the cruising ability is reduced, meanwhile, the bidirectional control needs an additional driving mechanism for driving, bidirectional simultaneous rotation cannot be carried out, and the use limitation is large, so that the double-speed bidirectional speed reducing motor is provided.

Disclosure of Invention

In view of the shortcomings in the prior art, the present invention is directed to a two-speed bidirectional geared motor to solve the problems set forth in the background above.

The purpose of the invention can be realized by the following technical scheme: a double-speed bidirectional speed reduction motor comprises a brushless motor, wherein a first-stage speed reducer and a third-stage speed reducer are respectively arranged at two ends of the brushless motor, the brushless motor is a double-shaft output motor, a clutch mechanism is arranged between a transmission shaft of the brushless motor and input shafts of the first-stage speed reducer and the third-stage speed reducer, and the clutch mechanism is configured to switch connection and disconnection of the transmission shaft and input shafts of the first-stage speed reducer and the third-stage speed reducer respectively; the clutch mechanism comprises a movable connecting seat and a fixed connecting seat, the movable connecting seat is connected with the input shaft of the speed reducer in a sliding mode, the fixed connecting seat is connected with the fixed connecting seat, a plurality of connecting blocks are distributed on the outer circumference of the movable connecting seat in a circumferential array mode, a plurality of connecting grooves for containing the connecting blocks are formed in the inner hole of the fixed connecting seat, the connecting grooves are axially close to the side of the movable connecting seat and penetrate through the side of the movable connecting seat, the connecting blocks are connected with the positioning grooves in a sliding mode, and a trigger mechanism is arranged on the fixed connecting seat and used for driving the movable connecting seat to slide along the axial direction of the input shaft of the speed reducer.

As a further scheme of the invention, the triggering mechanism comprises a reset rod and a reset spring, the fixed connecting seat is provided with a plurality of electromagnets and circular grooves near the side end face of the movable connecting seat, the electromagnets and the circular grooves are arranged alternately, the reset rod is accommodated in the circular grooves and is in sliding connection with the fixed connecting seat, the reset spring is accommodated in the circular grooves, one end of the reset spring is fixedly connected with the reset rod, the other end of the reset spring is fixedly connected with the inner wall of the circular grooves, and the movable connecting seat is provided with a plurality of metal blocks near the side end face of the fixed connecting seat and is opposite to the electromagnets.

As a further scheme of the invention, a metal block is arranged on the end face of the reset rod, which is far away from the side end face of the movable connecting seat, and an electromagnet is arranged on the inner wall of the circular groove.

As a further scheme of the invention, one side of the reset rod, which is close to the movable connecting seat, is provided with a ball body, and the ball body is in rolling connection with the reset rod.

As a further scheme of the invention, one end of the connecting block, which is close to the fixed connecting seat, is in an arc shape, and the notch at one side of the connecting groove, which is close to the movable connecting seat, is in a wide-mouth arrangement.

As a further scheme of the invention, the input shaft of the speed reducer is radially provided with a guide block, the guide block is detachably connected with the movable connecting seat, an inner hole of the movable connecting seat is axially provided with a positioning groove for accommodating the guide block, and the positioning groove is in sliding connection with the guide block.

The invention has the beneficial effects that: the invention has simple structure, high integration degree, small volume, wide application range and is convenient for controlling the clutch state of the double output shafts of the speed reducing motor. The unidirectional power transmission of the brushless motor is changed into bidirectional power output; the brushless motor drives the speed reducers in two directions to work simultaneously, the integration degree is high, and after the speed reducers in the first stage and the third stage work, the rotating speeds of two independent movable shafts are different; under the combined action of the oil seal and the sealing ring, independent waterproofness is realized.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is an exploded schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a brushless motor of the present invention;

FIG. 3 is a schematic illustration of the three stage speed reduction assembly configuration of the present invention;

FIG. 4 is a schematic view of the one-stage reduction assembly of the present invention;

FIG. 5 is a schematic structural view of the clutch mechanism of the present invention;

FIG. 6 is a cross-sectional view of FIG. 5;

FIG. 7 is a schematic structural diagram of the articulated seat of the present invention;

FIG. 8 is a schematic structural view of the fixing base of the present invention;

FIG. 9 is a schematic view of the motor casing structure of the present invention;

FIG. 10 is a schematic view of a first configuration of the motor cover of the present invention;

FIG. 11 is a second perspective view of the motor cover of the present invention;

in the figure: 100. a first-stage speed reducer; 200. a motor; 300. a third-stage speed reducer; 201. a motor housing; 202. a drive shaft; 203. a first bearing; 204. a motor cover; 205. a third bearing; 206. a seal ring; 207. a second bearing; 208. a gasket; 209. a clamp spring; 210. a coil assembly; 211. a rotor assembly; 301. a third-stage planetary gear set; 302. a small seal ring; 303. a movable shaft; 304. a cover plate; 305. an inner bearing; 306. oil sealing; 307. an outer bearing; 308. a gasket; 309. a clamp spring; 101. a primary planetary gear set; 102. a movable shaft; 103. a cover plate; 104. a seal ring; 105. an inner bearing; 106. oil sealing; 107. an outer bearing; 108. a clamp spring; 109. a gasket; 20101. a through hole; 20102. a first limit groove; 20103. a cavity; 20401. a through hole; 20402. a sealing groove; 20403. a second limit groove; 20404. a third limiting groove; 4. a movable connecting seat; 5. fixing the connecting seat; 6. a guide block; 7. a reset lever; 8. a return spring; 9. a reducer input shaft; 71. a sphere; 51. a circular groove; 52. an electromagnet; 53. connecting grooves; 41. a flange; 42. a metal block; 43. connecting blocks; 44, positioning grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 11, in an embodiment of the present invention, a two-speed bidirectional speed-reducing motor includes a brushless motor 200, a first-stage speed reducer 100 and a third-stage speed reducer 300 are respectively disposed at two ends of the brushless motor 200, the brushless motor 200 is a dual-shaft output motor, a clutch mechanism is disposed between a transmission shaft 202 of the brushless motor 200 and a transmission-reducer input shaft 9 of the first-stage speed reducer 100 and the third-stage speed reducer 300, and the clutch mechanism is configured to switch connection and disconnection between the transmission shaft 202 and the transmission-reducer input shaft 9 of the first-stage speed reducer 100 and the third-stage speed reducer 300, respectively; clutching mechanism includes swing joint seat 4 and fixed connection seat 5, swing joint seat 4 and reduction gear input shaft 9 sliding connection, fixed connection seat 5 and 202 fixed connection, a plurality of connecting blocks 43 of circumference array distribution on the outer circumference of swing joint seat 4, a plurality of spread grooves 53 that hold connecting block 43 have been seted up in fixed connection seat 5's the hole, spread grooves 53 axial is close to swing joint seat 4 side and runs through, connecting block 43 and constant head tank 44 sliding connection, be equipped with trigger mechanism on the fixed connection seat 5 and be used for driving swing joint seat 4 along reduction gear input shaft 9 axial slip.

Specifically, as shown in fig. 1 to 4, the brushless motor 200 includes a motor casing 201, a rotating shaft 202, a first bearing 203, a motor cover 204, a third bearing 205, a seal ring 206, a second bearing 207, a gasket 208, a clamp spring 209, a coil assembly 210, and a rotor assembly 211, as shown in fig. 5, the motor casing 201 is screwed with the motor cover 20, one side of the motor cover 20 is fixedly sleeved with the coil assembly 210, the motor casing 201 and the motor cover 20 are sleeved with a plurality of bearings, the same transmission shaft 202 is sleeved in the plurality of bearings, one end of the transmission shaft 202 is limited with the motor cover 204 through the gasket 208 and the clamp spring 209, the transmission shaft 202 is under the action of the plurality of bearings, so that the transmission shaft 202 is more stable and outputs power more accurately, the rotor assembly 211 is sleeved on the transmission shaft 202, two ends of the transmission shaft 202 are respectively extended to two sides of the motor casing 201 and the motor cover 204 which are relatively separated, and are respectively connected with a first-level speed reduction assembly and a third-level speed reduction assembly, thereby realizing simultaneous bidirectional power output.

Specifically, the motor casing 201 includes a casing through hole 20101, a limiting groove 20102, and a cavity 20103, as shown in fig. 9, the through hole 20101 has a first limiting groove 20102 formed therein, the first limiting groove 20102 is adapted to the first bearing 203, and the cavity 20103 is internally provided with the rotor assembly 211 and the coil assembly 210.

The motor cover 204 includes a through hole 20401, a sealing groove 20402, and a second limiting groove 20403; a third limiting groove 20404, as shown in fig. 10 and 11, the second limiting groove 20403 and the third limiting groove 20404 are respectively matched with the second bearing 207 and the third bearing 205, and the sealing groove 20402 is matched with the small motor cover sealing ring 206, so that the sealing, waterproof and dustproof effects are achieved.

The three-stage speed reduction part comprises a three-stage planetary gear set 301, a small sealing ring 302, a movable shaft 303, a cover plate 304, an inner bearing 305, an oil seal 306, an outer bearing 307, a gasket 308 and a clamp spring 309

One side of the third-stage planetary gear set 301 is in threaded connection with the motor cover 204, gears in the third-stage planetary gear set 301 are fixedly sleeved with one end of the transmission shaft 202, a movable shaft 303 is sleeved in the third-stage planetary gear set 301 in a rotating mode, one side of the third-stage planetary gear set 301 is in threaded connection with a cover plate 304, an inner bearing 305, an oil seal 306 and an outer bearing 307 are sleeved in the cover plate 304 respectively, the movable shaft 303 penetrates through the cover plate 304 respectively, the inner bearing 305, the oil seal 306 and the outer bearing 307 are sleeved, a gasket 308 and a clamp spring 308 are sleeved at one end of the movable shaft 303, the movable shaft 303 is limited, and therefore the effect of multi-stage speed change is achieved.

Specifically, the primary speed reduction part comprises a primary planetary gear set 101, a movable shaft 102, a cover plate 103, a sealing ring 104, an inner bearing 105, an oil seal 106, an outer bearing 107, a snap spring 108 and a gasket 109.

One side of one-level planetary gear set 101 and motor casing 201 spiro union, the fixed cover of gear and transmission shaft 102 in one-level planetary gear set 101 connects, loose axle 102 has been cup jointed in one-level planetary gear set 101 internal rotation, one side spiro union of one-level planetary gear set 101 has apron 103, the interior bearing 105 of cup jointing respectively in the apron 103, oil blanket 106, outer bearing 107, loose axle 102 runs through in apron 103 respectively, inner bearing 105, oil blanket 106, outer bearing 107, gasket 109 and jump ring 108 have been cup jointed to the one end of loose axle 102, spacing is carried out to loose axle 102, thereby realize the effect of variable speed.

In some embodiments, the triggering mechanism includes a reset rod 7 and a reset spring 8, the fixed connection seat 5 has been close to the end face of the side of the movable connection seat 4 and has been seted up a plurality of electromagnets 52 and circular groove 51, electromagnets 52 and circular groove 52 set up alternately, reset rod 7 is accomodate in circular groove 51 with fixed connection seat 5 sliding connection, reset spring 8 is accomodate in circular groove 51, reset spring 8 one end and reset rod 7 fixed connection, the other end and the inner wall fixed connection of circular groove 51, movable connection seat 4 is close to the end face of the side of fixed connection seat 5 and is equipped with a plurality of metal blocks 42 opposite to electromagnets 52, namely through inserting electromagnet 52 into the battery end, and leading-in remote control, convenient operation is swift.

Preferably, a metal block is arranged on the end face of the reset rod 7 far away from the side of the movable connecting seat 4, and an electromagnet is arranged on the inner wall of the circular groove 51, namely, the reset rod 7 moves towards the right side in advance when the movable connecting seat 4 is closed, so that the resistance of the electromagnet 52 to move towards the right is reduced.

In some embodiments, a ball 71 is disposed on one side of the reset rod 7 close to the movable connecting seat 4, and the ball 71 is in rolling connection with the reset rod 7, so as to reduce the resistance to the rotation of the connecting seat 4.

Preferably, the connecting block 43 is arc-shaped near one end of the fixed connecting seat 5, and the connecting groove 53 is wide-mouthed near the notch on one side of the movable connecting seat 4.

Preferably, the input shaft 9 of the speed reducer is radially provided with a guide block 6, the guide block 6 is detachably connected with the movable connecting seat 4, a positioning groove 44 for accommodating the guide block 6 is axially formed in an inner hole of the movable connecting seat 4, and the positioning groove 44 is slidably connected with the guide block 6.

The application mode of the present invention is as shown in fig. 3, the brushless motor drives the transmission shaft 202 to rotate, two ends of the transmission shaft 202 respectively drive the first-stage planetary gear set 101 and the third-stage planetary gear set 301 to rotate, and the first-stage planetary gear set 101 and the third-stage planetary gear set 301 respectively drive the movable shaft 102 and the movable shaft 303 to rotate, so that one brushless motor can simultaneously drive the two shafts to rotate in different directions, and the two shafts have different rotation speeds. Meanwhile, under the combined action of the oil seal 106, the oil seal 306 and the sealing ring 206, independent waterproofness is realized.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", etc., indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the method is simple. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

It will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the spirit and scope of the invention, and any equivalents thereto, such as those skilled in the art, are intended to be embraced therein.

Claims

1. A double-speed bidirectional speed reduction motor comprises a brushless motor (200) and is characterized in that a first-stage speed reducer (100) and a third-stage speed reducer (300) are respectively arranged at two ends of the brushless motor (200), the brushless motor (200) is a double-shaft output motor, a clutch mechanism is arranged between a transmission shaft (202) of the brushless motor (200) and input shafts (9) of the first-stage speed reducer (100) and the third-stage speed reducer (300), and the clutch mechanism is configured to switch connection and disconnection of the transmission shaft (202) and the input shafts (9) of the first-stage speed reducer (100) and the third-stage speed reducer (300) respectively; clutching mechanism includes swing joint seat (4) and fixed connection seat (5), swing joint seat (4) and reduction gear input shaft (9) sliding connection, fixed connection seat (5) and (202) fixed connection, a plurality of connecting blocks (43) of circumference array distribution on the outer circumference of swing joint seat (4), set up a plurality of spread groove (53) that hold connecting block (43) in the hole of fixed connection seat (5), spread groove (53) axial is close to swing joint seat (4) side and runs through, connecting block (43) and constant head tank (44) sliding connection, be equipped with trigger mechanism on fixed connection seat (5) and be used for driving swing joint seat (4) along reduction gear input shaft (9) endwise slip.

2. A two-speed bidirectional speed reducing motor according to claim 1, characterized in that the trigger mechanism comprises a reset rod (7) and a reset spring (8), the fixed connection seat (5) is provided with a plurality of electromagnets (52) and circular grooves (51) near the end face of the side of the movable connection seat (4), the electromagnets (52) and the circular grooves (51) are arranged alternately, the reset rod (7) is accommodated in the electromagnets (52) and slidably connected with the fixed connection seat (5), the reset spring (8) is accommodated in the circular grooves (51), one end of the reset spring (8) is fixedly connected with the reset rod (7), the other end of the reset spring is fixedly connected with the inner wall of the circular groove (51), and the end face of the side of the movable connection seat (4) near the fixed connection seat (5) is provided with a plurality of metal blocks (42) opposite to the electromagnets (52).

3. A two-speed bidirectional reducing motor according to claim 2, characterized in that the end face of the reset lever (7) away from the movable connecting seat (4) is provided with a metal block, and the inner wall of the circular groove (51) is provided with an electromagnet.

4. A two-speed bidirectional reducing motor according to claim 2, characterized in that the restoring rod (7) is provided with a sphere (71) on one side near the movable connecting seat (4), and the sphere (71) is in rolling connection with the restoring rod (7).

5. A two-speed bidirectional reducing motor according to claim 2, wherein one end of the connecting block (43) near the fixed connecting base (5) is arc-shaped, and the connecting groove (53) near the movable connecting base (4) is wide-mouthed.

6. A two-speed bidirectional reducer motor according to claim 2, characterized in that the reducer input shaft (9) is provided with a guide block (6) in a radial direction, the guide block (6) is detachably connected with the movable connecting base (4), a positioning groove (44) for accommodating the guide block (6) is axially formed in an inner hole of the movable connecting base (4), and the positioning groove (44) is slidably connected with the guide block (6).