CN218408354U

CN218408354U - Cycloid speed reducer

Info

Publication number: CN218408354U
Application number: CN202222885546.2U
Authority: CN
Inventors: 康凤明; 康峰; 赵广辰
Original assignee: SHANDONG HONGKANG MACHINERY MANUFACTURING CO LTD
Current assignee: SHANDONG HONGKANG MACHINERY MANUFACTURING CO LTD
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-01-31
Anticipated expiration: 2032-10-31

Abstract

The utility model provides a cycloid decelerator, including motor and the transmission module who is close to output shaft one end, transmission module is including the fixed flange fixing base of locating on the motor casing, the output shaft passes flange fixing base middle part setting, be equipped with eccentric bearing on it, the cycloid wheel that eccentric bearing overcoat was established, the circumference is equipped with a plurality of perforation on the cycloid wheel, transmission module still includes the locating pin, its one end passes the perforation on the cycloid wheel and with flange fixing base fixed connection, the other end is located the perforation, the cycloid wheel still rotates the cover and is equipped with the pin wheel shell outward, flange fixing base outer lane rotates the cover and is equipped with the flange roating seat, the flange roating seat is with inboard fixed connection of pin wheel shell, motor output shaft rotates and drives the eccentric rotation of cycloid wheel, under the locating pin effect, promote the pin wheel shell and drive the flange roating seat and rotate, make the structure of device compacter, the installation of locating pin is more firm, cooperation pin wheel shell pivoted setting, make this decelerator have great transmission moment under the condition of same reduction ratio.

Description

Cycloid speed reducer

Technical Field

The utility model relates to a transmission technical field specifically is a cycloid decelerator.

Background

The cycloidal reducer, also called cycloidal pin gear reducer, is a novel transmission device applying planetary transmission principle and adopting cycloidal pin gear engagement, and is widely applied to driving or speed reduction transmission operation in various industries due to the characteristics of excellent transmission performance, high speed reduction ratio and the like.

In the patent document No. 202080097231.2 published on 30.9/2022, a cycloidal reducer is disclosed, which, like the operating principle of a conventional cycloidal reducer, drives a cycloidal wheel to eccentrically rotate through an input shaft, and realizes speed reduction transmission under the action of the cycloidal wheel and a pin gear shell, and meanwhile, the low-speed rotation motion of the cycloidal wheel is transmitted to an output shaft through a positioning pin, so as to obtain a low output rotation speed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem existing in the background technology, the utility model provides a cycloid speed reducer.

The utility model discloses technical scheme as follows:

a cycloidal speed reducer comprises a motor, wherein one end of the motor, which is close to an output shaft, is connected with a transmission module, the output shaft is positioned in the transmission module, the transmission module comprises a flange fixing seat which is fixedly arranged at one end of the motor, which is close to the output shaft, and is fixedly connected with a motor shell, the output shaft passes through the middle part of the flange fixing seat, an eccentric transmission part is arranged on the flange fixing seat, the eccentric transmission part comprises an eccentric bearing arranged on the output shaft and a cycloidal gear sleeved on the eccentric bearing, a plurality of perforations are arranged on the periphery of the cycloidal gear, the transmission module further comprises a positioning pin, one end of the positioning pin passes through the perforations on the cycloidal gear and is fixedly connected with the flange fixing seat, the other end of the positioning pin is positioned in the perforations, a needle gear shell is rotatably sleeved outside the cycloidal gear, a flange rotating seat is rotatably sleeved on the outer ring of the flange fixing seat, and is fixedly connected with the inner side of the needle gear shell, when the output shaft of the motor rotates to drive the eccentric bearing to rotate, because of the characteristic of the tooth profile curve on the cycloid wheel and the limitation of the needle teeth on the needle gear shell, the cycloid wheel revolves under the drive of the eccentric bearing and has the plane movement trend of autorotation relative to the needle gear shell, the positioning pin penetrates through the through hole to be connected with the flange fixing seat, so that the self-transmission trend of the cycloid wheel is held back, the needle gear shell is driven to rotate under the interaction of the tooth profile curve on the cycloid wheel and the needle gear shell, the rotation of the flange rotating seat is driven by the rotation of the needle gear shell, the speed reduction output work of the device is completed, the needle gear shell and the output shaft of the motor rotate in the same direction under the action of the cycloid wheel, the output torque and the input torque of the speed reduction device are ensured to be in the same direction, and the output part of the device does not need to be arranged on the opposite side of the motor so as to complete the receiving work of the motion state of the positioning pin, the rotation state information of the pin gear shell can be received only through the flange rotating seat located on the outer ring of the flange fixing seat, the speed reduction output work of the device is completed, the structure of the device is more compact, meanwhile, the positioning pin and the flange fixing seat are fixedly connected in a setting mode, the device is arranged more simply and conveniently, the positioning pin is installed more firmly, a tooth profile curve on the cycloid wheel is matched to push and drive the pin gear shell to rotate, and the speed reducer has larger transmission torque under the condition of the same speed reduction ratio.

According to the cycloid speed reducer, the outer side of the pin gear shell is connected with the gland through the bolt, the outer end of the output shaft is located in the gland, lubricating grease can be added through the gland, and later maintenance is not needed in one-time addition, so that the cycloid speed reducer is more convenient to use.

As a preferred embodiment, the output shaft is rotationally connected with the flange fixing seat and the gland through the limiting bearing, so that the rotation axis of the output shaft of the motor is fixed, the service life of the device is prolonged, and the transmission module can smoothly complete speed reduction transmission work.

According to the cycloid speed reducer, the flange fixing seat comprises the fixing part and the switching part, wherein the switching part is far away from one side of the motor, the fixing part comprises an annular disc shape, and the fixing work of the motor and the flange fixing seat can be completed through the fixing part.

Furthermore, the flange rotating seat is sleeved on the outer ring of the switching part through at least two switching bearings in a rotating mode, so that the flange rotating seat can always keep the rotating shaft to rotate, the service life of the device is prolonged, and the transmission precision between the pin gear shell and the flange rotating seat is guaranteed.

Furthermore, the flange roating seat is including being close to fixed part one side and the outside connecting portion that extend of circumference for be connected with the mechanical mechanism that needs the drive operation, the diameter of connecting portion is greater than the fixed part diameter for the flange roating seat makes can be more convenient with the mechanical mechanism that needs the drive operation is connected.

The beneficial effects of the utility model reside in that: the utility model relates to a cycloid decelerator, motor output shaft rotates and drives eccentric bearing and rotate and drive the cycloid wheel revolution, because the cycloid wheel receives the restriction of locating pin, its tendency of autobiography is contained, and then it rotates to drive the pin gear shell, and the rotation that drives the flange roating seat through the rotation of pin gear shell, accomplish the speed reduction output work of device, the pin gear shell has been guaranteed to rotate with motor output shaft syntropy under the cycloid wheel effect, and then guaranteed this decelerator's output torque and input torque syntropy, make the output part of device need not to set up the opposite side at the motor simultaneously, with the acceptance work of accomplishing locating pin motion state, only can enough accept the rotation state information of pin gear shell through the flange roating seat that is located flange fixing base outer lane, accomplish the speed reduction output work of device, make the structure of device compacter, locating pin and flange fixing base fixed connection's the mode of setting simultaneously, it is simple and convenient more to make the device arrange, the installation of locating pin is more firm, cooperation cycloid wheel profile curve promotes and drives the mode that drives pin gear shell pivoted simultaneously, make this decelerator have great transmission torque under the circumstances of the same speed reduction ratio.

Drawings

The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.

In the drawings:

FIG. 1 is a schematic view of a reduction gear according to an embodiment;

the components represented by the reference numerals in the figures are:

1. a motor; 2. a transmission module; 21. a flange fixing seat; 211. a fixed part; 212. a switching part; 22. an eccentric bearing; 23. a cycloid gear; 24. positioning pins; 25. a pin gear housing; 26. a flange rotating seat; 27. a limit bearing; 271. a first limit bearing; 272. a second limit bearing; 28. switching a bearing; 29. and (7) pressing the cover.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

Examples

The embodiment provides a cycloid speed reduction device, including motor 1, the one end that motor 1 is close to the output shaft is connected with transmission module 2, the output shaft is located transmission module 2, through transmission module 2 accomplishes speed reduction output work.

Particularly, transmission module 2 includes flange fixing base 21, its one end of locating motor 1 and being close to the output shaft and with motor 1's casing fixed connection, flange fixing base 21 is close to one side circumference of motor 1 and outwards extends and forms an annular disk-shaped fixed part 211, the circumference is equipped with a plurality of mounting holes on the fixed part 211, and passes through the installation fixed work of motor 1 and flange fixing base 21 can be accomplished to the mounting hole.

Further, the output shaft passes flange fixing base 21 middle part, and stretches out to be equipped with eccentric driving medium outside flange fixing base 21, eccentric driving medium is including being located flange fixing base 21 outside two eccentric bearings 22 on the output shaft, and two eccentric bearings 22 are 180 misplaces, every eccentric shaft city outer lane all is equipped with cycloid wheel 23, cycloid wheel 23 outer lane is equipped with a plurality of bellied profile curves that are the profile of tooth, and is equipped with a plurality of perforation along its thickness direction circumference array on the cycloid wheel 23.

Further, the transmission module 2 further comprises a positioning pin 24, one end of the positioning pin 24 penetrates through the through holes of the two cycloidal gears 23 to be fixedly connected with the outer end of the flange fixing seat 21, the other end of the positioning pin is located in the through holes, and the end part of the positioning pin is flush with the outer side cycloidal gear 23.

Further, two the outer lane of cycloid wheel 23 still rotates the cover and is equipped with pin gear shell 25, pin gear shell 25 is including being located a plurality of pin gears that its inner circle circumference set up, the pin gear includes that cylindricality structure and axis are parallel with the output shaft axis, flange fixing base 21 still includes the column switching portion 212 that is located fixed part 211 and keeps away from motor one side, switching portion 212 diameter is less than pin gear shell 25 diameter, and its outer lane is rotated through adapter bearing 28 and is equipped with flange roating seat 26, the inboard fixed connection of flange roating seat 26 outside and pin gear shell 25.

Further, the flange roating seat 26 includes near fixed part 211 one side and the outside connecting portion that extend of circumference for be connected with the mechanical mechanism that needs the drive operation, the diameter of connecting portion is greater than fixed part 211 diameter, makes flange roating seat and the mechanical mechanism that needs the drive operation be connected and makes and can be more convenient.

Further preferably, the adapter bearing 28 includes two adapter bearings located on the outer ring of the adapter part 212, so that the flange rotating base 26 can always keep the fixed rotating shaft rotating, the service life of the device is prolonged, and the transmission precision between the pin gear housing 25 and the flange rotating base 26 is ensured, of course, the number of the adapter bearing 28 may also be greater than two, and no limitation is made here.

In this embodiment, there is discoid gland 29 still bolted connection in the pin gear shell 25 outside, the output shaft outer end is located gland 29, through gland 29 can accomplish the interpolation work of lubricating grease, and once add and need not the later maintenance, make the device more convenient when using.

It should be noted that, in this embodiment, the output shaft is rotationally connected to the flange fixing base 21 and the gland 29 through the limiting bearing 27, the limiting bearing 27 includes a first limiting bearing 271 and a second limiting bearing 272, two first limiting bearings 271 are arranged in parallel, a portion of the output shaft located in the flange fixing base 21 is rotationally connected to the flange fixing base 21 through the two first limiting bearings 271, and an end portion of the output shaft is rotationally connected to the gland 29 through the second limiting bearing 272, so that it is ensured that a rotation axis of the output shaft of the motor 1 is fixed, a service life of the device is prolonged, and it is ensured that the transmission module 2 can complete speed reduction transmission work smoothly.

The working principle of the device is as follows: when the output shaft of the motor 1 rotates to drive the eccentric bearing 22 to rotate, because of the characteristic of the tooth profile curve on the cycloidal gear 23 and the limitation of the needle teeth on the needle tooth shell 25, the cycloidal gear 23 revolves under the drive of the eccentric bearing 22 and has the plane motion trend of autorotation relative to the needle tooth shell 25, the positioning pin 24 passes through the through hole to be connected with the flange fixing seat 21, so that the self-transmission trend of the cycloidal gear 23 is held, the needle tooth shell 25 is driven to rotate under the interaction of the tooth profile curve and the needle teeth on the cycloidal gear 23, the rotation of the needle tooth shell 25 drives the flange rotating seat 26 to rotate, the speed reduction output work of the device is completed, and the needle tooth shell 25 is ensured to rotate along the same direction with the output shaft of the motor 1 under the action of the cycloidal gear 23, and then guaranteed this decelerator's output torque and input torque syntropy, make the output part of device need not to set up the opposite side at motor 1 simultaneously, in order to accomplish the receiving work of 24 motion states of locating pin, only can enough accept the rotation state information of pin tooth shell 25 through the flange roating seat 26 that is located the flange fixing base 21 outer lane, accomplish the deceleration output work of device, make the structure of device compacter, locating pin 24 and flange fixing base 21 fixed connection's the mode of setting up simultaneously, it is more simple and convenient to make the device arrange, the installation of locating pin 24 is more firm, the profile curve on the cooperation cycloidal gear 23 promotes the mode that drives pin tooth shell 25 pivoted simultaneously, this decelerator has great transmission torque under the circumstances of messenger's reduction ratio the same.

Claims

1. The cycloid speed reduction device is characterized by comprising a motor (1), wherein one end, close to an output shaft, of the motor (1) is connected with a transmission module (2), the output shaft is positioned in the transmission module (2), and the transmission module (2) comprises:

the flange fixing seat (21) is fixedly arranged at the end part of the motor (1) and is fixedly connected with the motor (1) shell;

the eccentric transmission part comprises an eccentric bearing (22) arranged on the output shaft and a cycloidal gear (23) sleeved outside the eccentric bearing (22), and a plurality of through holes are formed in the circumference of the cycloidal gear (23);

one end of the positioning pin (24) penetrates through the through hole in the cycloid wheel (23) and is fixedly connected with the flange fixing seat (21), and the other end of the positioning pin is positioned in the through hole;

the pin gear shell (25) is rotatably sleeved outside the cycloid wheel (23);

and the flange rotating seat (26) is rotatably arranged on the outer ring of the flange fixing seat (21) and is fixedly connected with the inner side of the needle gear shell (25).

2. The gerotor reduction gear set of claim 1, characterized in that a gland (29) is bolted to the outside of the pin housing (25), and the outer end of the output shaft is located in the gland (29).

3. The cycloidal reduction gear according to claim 2, characterized in that the output shaft is rotatably connected with the flange fixing seat (21) and the gland (29) through a limit bearing (27).

4. The cycloid speed reduction device of claim 1, wherein the flange fixing seat (21) comprises a fixing portion (211) and an adapter portion (212) at a side of the fixing portion (211) far away from the motor (1), the fixing portion (211) comprises an annular disc shape, and the flange rotating seat (26) is rotatably sleeved on an outer ring of the adapter portion (212) through at least two adapter bearings (28).

5. The cycloid reduction gear of claim 4, wherein the flange rotating base (26) includes a connecting portion extending circumferentially outward near one side of the fixed portion (211), the connecting portion having a diameter larger than that of the fixed portion (211).