CN210799988U

CN210799988U - Coaxial asynchronous transmission mechanism

Info

Publication number: CN210799988U
Application number: CN201921759400.5U
Authority: CN
Inventors: 曾益良
Original assignee: Guangdong Zhuohongda Intelligent Transmission Technology Co Ltd
Current assignee: Guangdong Zhuohongda Intelligent Transmission Technology Co Ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-06-19
Anticipated expiration: 2029-10-18

Abstract

The utility model discloses a coaxial asynchronous transmission mechanism, including output shaft, input shaft, first drive gear, ball bearing, first location bearing, second location bearing, the gomphosis chamber has been seted up at the lower part middle part of output shaft, the gomphosis chamber comprises three coaxial linking and the cylindricality chamber that the diameter from top to bottom scales up gradually mutually, the top of input shaft is formed with the gomphosis axle that agrees with mutually with the gomphosis chamber, the upper end of input shaft is formed with at the link end side play of gomphosis axle and accepts the annular slab. When the double-stage speed reducer is applied to a coaxial double-stage speed reducer, the embedded shaft at the top end of the input shaft is embedded into the embedded cavity at the bottom of the output shaft in an alignment mode, the input shaft is fixedly installed through the first positioning bearing, the output shaft is fixedly installed through the second positioning bearing, the input shaft and the output shaft can be positioned on the same axis, the output shaft and the input shaft can rotate asynchronously, the embedded shaft and the embedded cavity are in limit fit with each other, and the coaxiality of the output shaft and the input shaft of the speed reducer can be guaranteed when the speed reducer is subjected.

Description

Coaxial asynchronous transmission mechanism

Technical Field

The utility model belongs to the technical field of the speed reducer, concretely relates to coaxial asynchronous transmission mechanism.

Background

The speed reducer has the functions of speed matching and torque transmission between the prime motor and the working machine, can reduce the rotation speed of the prime motor to a required rotation number and obtain a power transmission mechanism with larger torque, the driving mechanism of the speed reducer mainly comprises a gear set for changing the torque, an output shaft for transmitting the power and an input shaft, and the speed reducer has various types according to the arrangement mode of the driving mechanism, wherein the coaxial double-stage speed reducer is one of the two types, the output shaft and the input shaft are separated and arranged on the same axis, gears on the output shaft and the input shaft are respectively meshed with the gear set, the power input by the prime motor is transmitted to the gear set through the input shaft and then is transmitted to the output shaft through the gear set to be output, namely the purpose of changing the torque is achieved, but the arrangement mode of the output shaft and the input shaft is that when the speed reducer is impacted by strong stress, once the gear set is displaced, the output shaft and the input shaft are prone to shift, so that the output shaft and the input shaft are not on the same axis, and mechanical errors are generated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coaxial asynchronous transmission to solve the problem that proposes among the above-mentioned background art.

This utility model adopts for achieving the above purpose:

a coaxial asynchronous transmission mechanism comprises an output shaft, an input shaft, a first transmission gear, a ball bearing, a first positioning bearing and a second positioning bearing, wherein a tabling cavity is formed in the middle of the lower portion of the output shaft, the tabling cavity is formed by three cylindrical cavities which are coaxially connected and gradually increase in diameter from top to bottom, a tabling shaft which is matched with the tabling cavity is formed in the top end of the input shaft, a bearing annular plate is formed at the upper end of the input shaft on the side of a connecting end of the tabling shaft, a first annular baffle plate is formed below the bearing annular plate on the upper portion of the input shaft, a first transmission gear is connected between the bearing annular plate and the first annular baffle plate on the upper portion of the input shaft through a double key, the top end and the bottom end of the first transmission gear are respectively abutted against the bearing annular plate and the first annular baffle plate, a first limiting annular ladder which is coaxial with the input shaft and is in a cylindrical shape is formed on the lower portion of the, the gomphosis is provided with first location bearing on the first spacing annular ladder, two ball bearing have been nested between first location bearing and first ring baffle on the input shaft, the lower extreme of output shaft is formed with second drive gear, be formed with the second ring baffle in second drive gear's top on the output shaft, the upper portion of output shaft is formed with the axis for the output shaft and is the spacing annular ladder of columniform second, the gomphosis is provided with second location bearing on the spacing annular ladder of second, on the output shaft before second location bearing and second ring baffle nested have two ball bearing.

Further, a conical surplus cavity is formed in the output shaft at the upper part of the embedding cavity.

It is further explained that the shape of the inner wall of the first positioning bearing is matched with the shape of the first limiting annular ladder.

It is further explained that the shape of the inner wall of the second positioning bearing is matched with the shape of the second limiting annular ladder.

Further, the peripheries of the first positioning bearing and the second positioning bearing are provided with vertically through mounting screw holes.

Compared with the prior art, the beneficial effects of the utility model reside in that:

when the double-stage speed reducer is applied to a coaxial double-stage speed reducer, the embedded shaft at the top end of the input shaft is embedded into the embedded cavity at the bottom of the output shaft in an alignment mode, the input shaft is fixedly installed through the first positioning bearing, the output shaft is fixedly installed through the second positioning bearing, the input shaft and the output shaft can be positioned on the same axis, the output shaft and the input shaft can rotate asynchronously, the embedded shaft and the embedded cavity are in limit fit with each other, and the coaxiality of the output shaft and the input shaft of the speed reducer can be guaranteed when the speed reducer is subjected.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic plan view of the present invention;

FIG. 3 is a schematic structural view of a cross-section A-A of the present invention;

wherein: 1. an output shaft; 2. an input shaft; 3. a first drive gear; 4. a ball bearing; 5. a first positioning bearing; 6. a second positioning bearing; 7. a fitting cavity; 8. a fitting shaft; 9. receiving the annular plate; 10. a first annular baffle; 11. a first limiting annular ladder; 12. a second transmission gear; 13. a second annular baffle; 14. a second limiting annular ladder; 15. a surplus cavity; 16. and installing screw holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides the following technical solutions:

a coaxial asynchronous transmission mechanism comprises an output shaft 1, an input shaft 2, a first transmission gear 3, a ball bearing 4, a first positioning bearing 5 and a second positioning bearing 6, wherein a tabling cavity 7 is formed in the middle of the lower portion of the output shaft 1, the tabling cavity 7 is formed by three cylindrical cavities which are coaxially connected and gradually increase in diameter from top to bottom, a tabling shaft 8 which is matched with the tabling cavity 7 is formed at the top end of the input shaft 2, a bearing annular plate 9 is formed at the upper end of the input shaft 2 on the side of the connecting end of the tabling shaft 8, a first annular baffle plate 10 is formed below the bearing annular plate 9 at the upper portion of the input shaft 2, the first transmission gear 3 is connected between the bearing annular plate 9 and the first annular baffle plate 10 through a double key, the top end and the bottom end of the first transmission gear 3 are respectively abutted against the bearing annular plate 9 and the first annular baffle plate 10, a first cylindrical limiting annular ladder 11 coaxial with the input shaft 2 is formed at the lower part of the input shaft 2, a first positioning bearing 5 is embedded on the first limiting annular ladder 11, the inner wall of the first positioning bearing 5 is matched with the first limiting annular ladder 11 in shape, two ball bearings 4 are embedded between the first positioning bearing 5 and a first annular baffle 10 on the input shaft 2, a second transmission gear 12 is formed at the lower end of the output shaft 1, a second annular baffle 13 is formed above the second transmission gear 12 on the output shaft 1, a second cylindrical limiting annular ladder 14 coaxial with the output shaft 1 is formed at the upper part of the output shaft 1, a second positioning bearing 6 is embedded on the second limiting annular ladder 14, and the inner wall of the second positioning bearing 6 is matched with the second limiting annular ladder 14 in shape, two ball bearings 4 are nested in front of the second positioning bearing 6 and the second annular baffle 13 on the output shaft 1, the peripheries of the first positioning bearing 5 and the second positioning bearing 6 are also provided with vertically through mounting screw holes 16, and the mounting screw holes 16 are used for mounting and fixing the output shaft 1 and the input shaft 2 in the speed reducer; in addition, a surplus cavity 15 which is conical is formed in the upper portion of the embedding cavity 7 in the output shaft 1, lubricating grease can be filled between the embedding shaft 8 of the input shaft 2 and the embedding cavity 7 of the output shaft 1 for lubrication, and the surplus cavity 15 is arranged to buffer and store the lubricating grease extruded by the rotation of the output shaft 1 and the input shaft 2.

When the double-stage speed reducer is applied, the embedded shaft 8 at the top end of the input shaft 2 is embedded into the embedded cavity 7 at the bottom of the output shaft 1 in an aligning way, the input shaft 2 is fixedly installed through the first positioning bearing 5, the output shaft 1 is fixedly installed through the second positioning bearing 6, the input shaft 2 inputs power through the prime motor, and can rotate in the embedded cavity 7, the roller bearing and the first positioning bearing 5 without influencing the rotation of the output shaft 1, the first transmission gear 3 and the second transmission gear 12 can be meshed and connected through other gear sets, the power transmitted by the first transmission gear 3 is transmitted to the second transmission gear 12 through other gear sets, the second transmission gear 12 drives the output shaft 1 to rotate in the roller bearing and the second positioning bearing 6, the input shaft 2 and the output shaft 1 are fixedly positioned through the first positioning bearing 5 and the second positioning bearing 6, and the embedded cavity 7 is embedded with the embedded shaft 8 in a limiting way, ensure that the two are stably positioned on the same axis and are not easy to deviate.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a coaxial asynchronous transmission mechanism, includes output shaft (1), input shaft (2), first drive gear (3), ball bearing (4), first location bearing (5), second location bearing (6), its characterized in that: the lower part middle part of output shaft (1) has been seted up gomphosis chamber (7), gomphosis chamber (7) comprise three looks coaxial linking and the cylindricality chamber that the diameter from top to bottom increases gradually, the top of input shaft (2) is formed with gomphosis axle (8) that agree with mutually with gomphosis chamber (7), the upper end of input shaft (2) is formed with in the link end side play of gomphosis axle (8) and accepts annular plate (9), the upper portion of input shaft (2) is formed with first annular baffle (10) below accepting annular plate (9), the upper portion of input shaft (2) is accepting through double bond connection with first drive gear (3) between annular plate (9) and first annular baffle (10), the top, the bottom of first drive gear (3) respectively with accept annular plate (9), first annular baffle (10) offset, the lower part of input shaft (2) is formed with and input shaft (2) coaxial line and be columniform first spacing annular ladder (11) of columniform ) The utility model discloses a spacing annular ladder of output shaft (1), the gomphosis is provided with first location bearing (5) on first spacing annular ladder (11), two ball bearing (4) have been nested between first location bearing (5) and first annular baffle (10) on input shaft (2), the lower extreme of output shaft (1) is formed with second drive gear (12), be formed with second annular baffle (13) in the top of second drive gear (12) on output shaft (1), the upper portion of output shaft (1) is formed with output shaft (1) with the axis and be columniform spacing annular ladder of second (14), the gomphosis is provided with second location bearing (6) on the spacing annular ladder of second (14), output shaft (1) is gone up before second location bearing (6) and second annular baffle (13) nested two ball bearing (4).

2. A coaxial asynchronous transmission according to claim 1, characterized in that: the upper part of the embedding cavity (7) in the output shaft (1) is provided with a conical surplus cavity (15).

3. A coaxial asynchronous transmission according to claim 1, characterized in that: the shape of the inner wall of the first positioning bearing (5) is matched with that of the first limiting annular ladder (11).

4. A coaxial asynchronous transmission according to claim 1, characterized in that: the shape of the inner wall of the second positioning bearing (6) is matched with that of the second limiting annular ladder (14).

5. A coaxial asynchronous transmission according to claim 1, characterized in that: and the peripheries of the first positioning bearing (5) and the second positioning bearing (6) are also provided with vertically through mounting screw holes (16).