CN215580750U

CN215580750U - Speed reducing motor

Info

Publication number: CN215580750U
Application number: CN202120814360.0U
Authority: CN
Inventors: 谭军; 任帅军
Original assignee: Shenzhen Linglve CNC Equipment Co Ltd
Current assignee: Shenzhen Linglve CNC Equipment Co Ltd
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2022-01-18
Anticipated expiration: 2031-04-20

Abstract

The application discloses gear motor includes: an output shaft; an input shaft; a reduction gear set connected with the input shaft and the output shaft; the stator assembly is sleeved outside the reduction gear set and is coaxially arranged with the input shaft; the rotor assembly is sleeved outside the stator assembly, is coaxially arranged with the input shaft and is connected with the input shaft; this application has the advantage that overall size is little, the installation of being convenient for.

Description

Speed reducing motor

Technical Field

The application relates to the field of motors, in particular to a speed reduction motor.

Background

A motor rotational speed that is used for general nonstandard equipment, industrial robot etc. is high, and the moment of torsion is little, when in actual use, generally need install the speed reducer additional to reduce rotational speed promotion moment of torsion.

The speed reducer is generally directly arranged on an output shaft of the motor and combined to form a power assembly, and the power assembly manufactured by the mode has the advantages of large length, large volume and troublesome installation, and restricts the design and planning of technical personnel to a certain extent.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. Therefore, the speed reducing motor is small in length and convenient to install.

The gear motor of the embodiment of the application includes:

an input shaft;

the input end of the reduction gear set is connected with the input shaft;

the stator assembly is sleeved outside the reduction gear set and is coaxially arranged with the input shaft;

the rotor assembly is sleeved outside the stator assembly, is coaxially arranged with the input shaft and is connected with the input shaft;

and the output shaft is connected with the output end of the reduction gear set.

According to the present embodiment, at least the following effects are obtained: the stator assembly and the rotor assembly form a motor, the motor is sleeved outside the reduction gear set and is not directly connected to one end of the reduction motor, the overall length of the embodiment is reduced, and the installation is convenient; meanwhile, the reduction gear set also has the function of fixing the stator component, so that compared with the existing product, the reduction gear set also reduces the structure special for fixing the stator component, has light weight and is easy to mount.

According to an embodiment of the present application, the reduction gear set includes:

the inner wall of the needle gear shell is provided with a plurality of needle rollers at intervals along the rotating direction of the input shaft, and the axial directions of the needle rollers are parallel to the axial direction of the input shaft;

the cycloidal gear is arranged in the needle gear shell in a rolling manner, can roll along the rotation direction of the input shaft and is meshed with the needle roller;

the needle gear shell, the needle roller and the cycloid wheel form a cycloid needle type reduction gear set.

According to an embodiment of the application, the input shaft and the output shaft are coaxially arranged.

According to the embodiment of the application, the input shaft is a crankshaft, the cycloidal gear is rotatably arranged on a connecting rod journal of the input shaft, and the axis of the cycloidal gear is superposed with the axis of the connecting rod journal;

the cycloidal gear is connected with the output shaft through a cross round wheel, first gear shaping and second gear shaping are respectively arranged on two sides of the cross round wheel, the first gear shaping and the second gear shaping are mutually vertical, third gear shaping meshed with the first gear shaping is arranged at one end, opposite to the cross round wheel, of the output shaft, and fourth gear shaping meshed with the second gear shaping is arranged on one side, opposite to the cross round wheel, of the cycloidal gear.

According to the embodiment of the application, a wave spring is further arranged between the cycloidal gear and the input shaft, so that the cycloidal gear has the tendency of sliding towards one side of the output shaft to compress the cross round gear and the output shaft.

According to the embodiment of the application, the stator assembly comprises a stator core body and a winding group fixed on the stator core body in a preset mode;

the rotor assembly comprises a rotor shell with an inner cavity, a plurality of magnetic sheets are arranged in the cavity at intervals along the rotating direction of the input shaft, the polarities of the adjacent two magnetic sheets are opposite, and the rotor shell is provided with a connecting hole used for being connected with the input shaft.

According to an embodiment of the application, the rotor housing is fixed on the input shaft by bolts.

According to the embodiment of the application, still include the shell, be equipped with the encoder dish on the rotor subassembly, the motion trail of encoder dish is in the projected position is equipped with the encoder board on the shell.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

Fig. 1 is an exploded schematic view of a reduction motor according to an embodiment of the present application.

Reference numerals: a reduction gear set 100; a cycloid gear 101; a needle housing 102; a needle roller 103; a stator assembly 200; a winding group 201; a stator core 202; a rotor assembly 300; a magnetic sheet 301; a rotor case 302; an input shaft 400; an output shaft 500; a cross-shaped wheel 600.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and 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 therefore, should not be considered as limiting the present application. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

The reduction motor of the embodiment of the present application is described below with reference to fig. 1.

The gear motor of the embodiment of the application includes:

an input shaft 400;

a reduction gear set 100 having an input end connected to the input shaft 400;

a stator assembly 200 sleeved outside the reduction gear set 100 and coaxially disposed with the input shaft 400;

the rotor assembly 300 is sleeved outside the stator assembly 200, coaxially disposed with the input shaft 400, and connected to the input shaft 400.

An output shaft 500 connected to an output end of the reduction gear set 100;

the reduction gear set 100 may be configured as follows: common gear reducers, worm-gear reducers, planetary gear reducers, cycloidal pin gear reducers, harmonic gear reducers, and the like.

Specifically, the overall shape of the reduction gear set 100 is cylindrical, and the overall shapes of the stator assembly 200 and the rotor assembly 300 are both cylindrical, so that the overall length of the embodiment can be reduced, the three components are tightly installed, and the volume can be reduced, so that the embodiment has the advantage of convenience in installation.

In addition, the general motor has a structure for fixing the stator, and the weight of the structure is large, in this embodiment, the stator assembly 200 is sleeved outside the reduction gear set 100, so the reduction gear set 100 also has an effect of fixing the stator assembly 200, and therefore, compared with the existing product, the reduction gear set also has the characteristic of light weight.

According to the gear motor of the embodiment of the application, the following effects are also achieved: compared with the existing product, the utility model has the advantages of light weight, compact structure, small volume and convenient installation.

In some embodiments of the present application, the reduction gear set 100 includes:

the reduction gear set 100 includes:

a needle housing 102 having an inner wall provided with a plurality of needles 103 at intervals in a rotational direction of the input shaft 400, an axial direction of the needles 103 being parallel to an axial direction of the input shaft 400;

a cycloid gear 101 which is provided in the needle housing 102 so as to be capable of rolling in the rotational direction of the input shaft 400 and is engaged with the needle roller 103;

the needle gear housing 102, the needle roller 103 and the cycloidal gear 101 form a cycloidal needle type reduction gear set 100, and the reduction principle is as follows: the input shaft 400 causes the cycloid gear 101 to revolve in the needle housing 102, while the cycloid gear 101 rotates in the reverse direction with respect to the revolution direction thereof, and causes the output shaft 500 to rotate by the rotation thereof, thereby achieving reduction of the input rotational speed.

For example, in some cases, the number of the cycloid gears 101 is only one, and the transmission efficiency is high; in other cases, two cycloidal gears 101 may be provided, and the two cycloidal gears 101 are symmetrically arranged with respect to the input shaft 400, and the provision of two cycloidal gears 101 may further reduce the motor rotation speed and increase the torque.

Specifically, the cycloidal pin type reduction gear set has the advantages of large reduction ratio, large bearable torque and small axial size, and the length of the cycloidal pin type reduction gear set can be further reduced.

In some embodiments of the present application, the input shaft 400 and the output shaft 500 are coaxially disposed.

Specifically, the input shaft 400 and the output shaft 500 are coaxially arranged, so that the use of other transmission parts can be reduced, the structural weight is further reduced, when the cycloidal gear 101 is selected to form the cycloidal pin type reduction gear set 100, the cycloidal gear 101 is simultaneously used as the input end and the output end of the reduction gear set, and the structure is compact.

In some embodiments of the present application, the input shaft 400 is a crankshaft, and the cycloidal gear 101 is rotatably disposed on a connecting rod journal of the input shaft 400;

the cycloidal gear 101 is connected with the output shaft 500 through a cross-shaped circular wheel 600, first gear shaping and second gear shaping are respectively arranged on two sides of the cross-shaped circular wheel 600 and are perpendicular to each other, third gear shaping meshed with the first gear shaping is arranged at one end, opposite to the cross-shaped circular wheel 600, of the output shaft 500, and fourth gear shaping meshed with the second gear shaping is arranged on one side, opposite to the cross-shaped circular wheel 600, of the cycloidal gear 101.

Specifically, the cycloid wheel 101 is rotatably connected with the input shaft 400 through a rotating bearing, and the wheel surface of the cross round wheel 600 can roll on the inner wall of the pin gear shell.

In a conventional method, a plurality of pin holes are arranged on the cycloidal gear 101 at intervals along the rotation direction of the cycloidal gear, and a plurality of pins matched with the pin holes are arranged on the output shaft 500, the diameter of each pin is smaller than that of each pin hole, so that the cycloidal gear 101 can rotate in the reverse direction when rolling, and the pins are pushed to revolve around the output shaft 500 through the pin holes so as to drive the output shaft 500 to rotate.

However, this arrangement has a drawback that, when only one cycloid wheel 101 is provided, a virtual position exists in the first stroke when the motor rotates in the reverse direction, and if a heavy load exists at this time, a large impact is applied to the pin, and the reduction gear set 100 is damaged seriously.

Therefore, the output shaft 500 and the cycloidal gear 101 are connected through the cross round wheel 600, so that the cycloidal gear 101 can slide relative to the output shaft 500 along any direction, and virtual stroke does not exist; and meanwhile, a plurality of groups of mutually meshed gear shaping are used, so that the embodiment also has the characteristics of high precision and good rigidity.

In some embodiments of the present application, a wave spring is further disposed between the cycloidal gear 101 and the input shaft 400, so that the cycloidal gear 101 has a tendency to move toward the side of the output shaft 500, and presses the cross round wheel 600 and the output shaft 500.

Specifically, the wave spring makes tight connection between cycloid wheel 101, cross ring and output shaft 500, ensures the effective operation of this embodiment.

In some embodiments of the present application, the stator assembly 200 includes a stator core 202 and a winding set 201 fixed to the stator core 202 in a predetermined manner;

the rotor assembly 300 includes a rotor housing 302 having an inner cavity in which a plurality of magnetic pieces 301 are disposed at intervals along a rotation direction of the input shaft 400, two adjacent magnetic pieces 301 have opposite polarities, and the rotor housing 302 is provided with a connection hole connected with the input shaft 400.

The stator assembly 200 and the rotor assembly 300 constitute a permanent magnet motor.

For example, the stator core 202 has a cylindrical main body, the outer wall of the main body is provided with a plurality of winding blocks at intervals for fixing the winding set 201, the main body is used for being sleeved on the reduction gear set 100, and in the case of selecting the cycloid needle type reduction gear set 100, the stator core 202 is sleeved outside the needle tooth housing 102 directly.

In some embodiments of the present application, the rotor housing 302 is bolted to the input shaft 400.

Specifically, through bolt fastening, the installation is firm, firm.

In some embodiments of the present application, the present application further includes a housing, the rotor assembly 300 is provided with an encoder disk, and a position of a projection of a motion trajectory of the encoder disk on the housing is provided with an encoder board.

The gear motor of the present application is described below in one specific embodiment, with reference to fig. 1, including:

an output shaft 500, which is a crankshaft;

an input shaft 400 provided coaxially with the input shaft 400;

the reduction gear set 100, which is connected to the input shaft 400 and the output shaft 500, respectively, includes:

a needle housing 102 having an inner wall provided with a plurality of needles 103 at intervals along a rotational direction of the input shaft 400, the rotational direction of the needles 103 being parallel to the rotational direction of the input shaft 400;

a cycloid gear 101, said cycloid gear 101 can roll in the rotation direction of said input shaft 400 in said needle housing 102 and is engaged with said needle 103, said cycloid gear 101 is rotatably disposed on the connecting rod journal of said input shaft 400, the axis of said cycloid gear 101 is coincident with the axis of the connecting rod journal;

The stator assembly 200 is sleeved outside the reduction gear set 100 and coaxially disposed with the input shaft 400, and includes: a stator core 202 and a winding set 201 fixed on the stator core 202 in a predetermined manner.

The rotor assembly 300, sleeved outside the stator assembly 200, coaxially disposed with the input shaft 400, and connected to the input shaft 400, includes: the rotor comprises a rotor shell 302 with an internal cavity, wherein a plurality of magnetic sheets 301 are arranged in the cavity at intervals along the rotation direction of the input shaft 400, the polarities of the adjacent magnetic sheets 301 are opposite, and the rotor shell 302 is provided with a connecting hole connected with the input shaft 400.

The shell for wrap this application's rotor subassembly 300, stator module 200 and reduction gear set 100, be equipped with the encoder dish on the rotor subassembly 300, the motion trail of encoder dish is in the projected position is equipped with the encoder board on the shell.

The working principle of the embodiment is as follows: the stator assembly 200 and the rotor assembly 300 form a permanent magnet motor to drive the input shaft 400 to rotate, the reduction principle of the reduction gear set 100 is a cycloidal pin type speed reducer, and the specific operation principle is as follows, the input shaft 400 drives the cycloidal gear 101 to revolve in the pin gear shell 102, meanwhile, the cycloidal gear 101 rotates reversely relative to the revolution direction of the cycloidal gear, and drives the output shaft 500 to rotate through the rotation of the cycloidal gear, so that the input rotation speed is reduced.

It can be seen that the present embodiment further has: compact structure, small overall length, convenient installation and the like.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A reduction motor, comprising:

an input shaft;

the input end of the reduction gear set is connected with the input shaft;

2. The reduction motor according to claim 1, wherein the reduction gear set comprises:

3. The reduction motor according to claim 2, wherein the input shaft and the output shaft are coaxially disposed.

4. The reduction motor according to claim 3, wherein the input shaft is a crankshaft, and the cycloidal gear is rotatably disposed on a connecting rod journal of the input shaft;

5. The reduction motor according to claim 4, wherein a wave spring is further provided between the cycloid wheel and the input shaft so that the cycloid wheel tends to slide toward the output shaft to press the cross-shaped circular wheel and the output shaft.

6. The reduction motor according to claim 1, wherein the stator assembly includes a stator core and a winding group fixed to the stator core in a predetermined manner;

7. The reduction motor according to claim 6, wherein the rotor housing is fixed to the input shaft by bolts.

8. The gear motor according to claim 1, further comprising a housing, wherein the rotor assembly is provided with an encoder disk, and an encoder plate is provided at a position where a motion track of the encoder disk is projected on the housing.