CN215521835U

CN215521835U - Speed reducer

Info

Publication number: CN215521835U
Application number: CN202121708725.8U
Authority: CN
Inventors: 王小林; 石小登
Original assignee: Guangzhou Ruibao Electrical Co ltd
Current assignee: Guangzhou Ruibao Electrical Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-01-14
Anticipated expiration: 2031-07-26

Abstract

The utility model relates to a speed reducer, which comprises a first duplicate gear set, a second duplicate gear set, a first bevel gear, a second bevel gear and a shell, wherein the first duplicate gear set is connected with the first bevel gear; the first duplicate gear set consists of N first duplicate gears which are sequentially and rotatably sleeved on the same shaft; the first-stage gear of the first duplicate gear positioned at the foremost end can be meshed with a driving gear sleeved at the input end of the power source; the second duplicate gear set consists of N second duplicate gears which are sequentially and rotatably sleeved on the same shaft, each second duplicate gear is meshed with the adjacent first duplicate gear, and a second stage gear of the second duplicate gear positioned at the rearmost end is meshed with the driven gear; the first bevel gear and the driven gear are fixedly sleeved on the transmission shaft; the second bevel gear is meshed with the first bevel gear and fixedly sleeved on the output shaft. The speed reducer can provide angle transmission, can meet the use requirements of high torque and high strength, and is compact in structure and convenient to install.

Description

Speed reducer

Technical Field

The utility model relates to a speed reducer, in particular to a speed reducer capable of realizing corner transmission.

Background

The reduction gearbox is an industrial product with wide application, can reduce the output rotating speed of power sources such as a motor, an internal combustion engine, an external combustion engine and the like, and simultaneously increases the output torque. At present, straight-tooth cylindrical reduction boxes are available in the market, so that the occupied space is large, the requirement of multi-space size installation cannot be met, and corner transmission cannot be realized.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention has been developed to provide a speed reducer that overcomes or at least partially solves the above-mentioned problems.

The speed reducer includes:

the first duplicate gear set consists of N first duplicate gears which are sequentially and rotatably sleeved on the same shaft, wherein N is an integer and is greater than or equal to 2; the first-stage gear of the first duplicate gear positioned at the foremost end can be meshed with a driving gear sleeved at the input end of the power source;

the second duplicate gear set consists of N second duplicate gears which are sequentially and rotatably sleeved on the same shaft, each second duplicate gear is meshed with the adjacent first duplicate gear, a second stage gear of the second duplicate gear positioned at the rearmost end is meshed with the driven gear, and the power of the power source can be transmitted to the driven gear through the driving gear, each first duplicate gear and each second duplicate gear;

the first bevel gear and the driven gear are fixedly sleeved on the transmission shaft;

the second bevel gear is meshed with the first bevel gear and fixedly sleeved on the output shaft;

the shell comprises a first direction sub-shell, a second direction sub-shell and a sub-shell connecting piece; the sub-shell connecting piece is fixedly connected with the first direction sub-shell and the second direction sub-shell simultaneously; the first duplicate gear set, the second duplicate gear set and the driven gear are arranged in a space surrounded by the first direction sub-shell; the first bevel gear and the second bevel gear are arranged in a space surrounded by the second direction sub-shell.

Optionally, an edge of one end of the first direction sub-housing, which is far away from the sub-housing connecting piece, extends outwards to form a first annular connecting portion, and the first annular connecting portion is provided with a bolt through which a power source extending into the first annular connecting portion can be locked; the driving gear sleeved on the input end of the power source can penetrate through a through hole formed in one end, far away from the sub-shell connecting piece, of the first direction sub-shell and is meshed with the first-stage gear of the first duplicate gear located at the foremost end.

Optionally, one end of the first direction sub-housing adjacent to the sub-housing connection member forms a bearing chamber, and the transmission shaft is supported by bearings arranged in the two bearing chambers.

Optionally, the second direction sub-housing is formed with a second annular connecting portion surrounding the sub-housing connecting member outer peripheral wall, the second annular connecting portion being provided with a bolt and fixedly connected with the sub-housing connecting member by the bolt.

Alternatively, the second direction sub-housing may have two oppositely disposed bearing chambers formed therein, and the output shaft may be supported by bearings disposed in the two bearing chambers.

Optionally, the axis of the transmission shaft is perpendicular to the axis of the output shaft.

The speed reducer provided by the embodiment of the utility model can provide angle transmission, can meet the use requirements of high torque force and high strength, and is compact in structure and convenient to mount.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a perspective view of one embodiment of a retarder of the present invention;

FIG. 2 is a cross-sectional view of the retarder of FIG. 1;

FIG. 3 is an exploded view of the retarder of FIG. 1;

fig. 4 is an assembly view of the drive portion of the reducer of fig. 1.

Description of reference numerals: 1. a first bevel gear; 2. a second bevel gear; 3. a first duplicate gear; 4. a driving gear; 5. a second duplicate gear; 6. a driven gear; 7. a drive shaft; 8. a bearing; 9. an output shaft; 10. a first directional sub-housing; 11. a second direction sub-housing; 12. a sub-housing connection; 13. fixing a column; 14. a second annular connecting portion; 15. a first annular connecting portion.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below are exemplary embodiments for explaining the present invention with reference to the drawings and should not be construed as limiting the present invention, and those skilled in the art can make various changes, modifications, substitutions and alterations to the embodiments without departing from the principle and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

The terms "central," "longitudinal," "lateral," "length," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like, referred to or as may be referred to in the description of the utility model, are used in the indicated orientation or positional relationship indicated in the drawings for convenience in describing the utility model and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the utility model.

Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Furthermore, the terms "comprises," "comprising," and any variations thereof, are intended to cover non-exclusive inclusions.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A decelerator according to an embodiment of the present invention will be described with reference to the accompanying drawings.

Referring to fig. 1 to 3, a decelerator according to an embodiment of the present invention includes a housing, a first double gear set, a second double gear set, a first bevel gear 1, and a second bevel gear 2.

The housing can provide a mounting platform or mounting space for other components of the reducer and can protect the components disposed in the interior space enclosed by the housing.

The first duplicate gear set is arranged in a space surrounded by the shell, the first duplicate gear set is composed of N first duplicate gears 3 which are sequentially and rotatably sleeved on the same shaft, two ends of the shaft are fixedly connected with the shell, and N is an integer and is more than or equal to 2. In this embodiment, N is 3, and it should be understood that the value of N can be adjusted according to the reduction ratio.

The first duplicate gear 3 comprises a first-stage gear and a second-stage gear, wherein the reference circle of the first-stage gear is larger than that of the second-stage gear, and the number of teeth of the first-stage gear is larger than that of the second-stage gear. Each first duplicate gear 3 is sleeved on the same shaft in the same orientation, for example, corresponding to the view of fig. 2, the second stage gear of each first duplicate gear 3 is located below the first stage gear corresponding to the same first duplicate gear 3.

The first-stage gear of the first duplicate gear 3 located at the foremost end can be engaged with the driving gear 4 at the input end of the power source, such as a motor, an internal combustion engine, an external combustion engine, etc., corresponding to the view angle of fig. 2, that is, the first-stage gear of the first duplicate gear 3 located at the uppermost end can be engaged with the driving gear 4 at the input end of the power source.

The second duplicate gear set is arranged in a space surrounded by the shell, the second duplicate gear set is composed of N second duplicate gears 5 which are sequentially and rotatably sleeved on the same shaft, and two ends of the shaft are fixedly connected with the shell. Corresponding to the embodiment, the second duplicate gear set is composed of 3 second duplicate gears 5 which are sequentially and rotatably sleeved on the same shaft.

Similarly, the second duplicate gear 5 includes a first stage gear and a second stage gear, wherein the reference circle of the first stage gear is larger than that of the second stage gear, and the number of teeth of the first stage gear is larger than that of the second stage gear. The second duplicate gears 5 are sleeved on the same shaft in the same orientation, for example, corresponding to the view of fig. 2, the second stage gear of each second duplicate gear 5 is located below the first stage gear of the same second duplicate gear 5.

Referring to fig. 2, for convenience of description, the first duplicate gear 3 of the first duplicate gear set is defined as a first duplicate gear a, a first duplicate gear B, and a first duplicate gear C, and the second duplicate gear 5 of the second duplicate gear set is defined as a second duplicate gear a, a second duplicate gear B, and a second duplicate gear C, respectively. Each of the second duplicate gears 5 is engaged with the adjacent first duplicate gear 3, that is, the second stage gear of the first duplicate gear a is engaged with the first stage gear of the second duplicate gear a, the second stage gear of the second duplicate gear a is engaged with the first stage gear of the first duplicate gear B, the second stage gear of the first duplicate gear B is engaged with the first stage gear of the second duplicate gear B, the second stage gear of the second duplicate gear B is engaged with the first stage gear of the first duplicate gear C, and the second stage gear of the first duplicate gear C is engaged with the first stage gear of the second duplicate gear C. The second stage gear of the second duplicate gear 5 located at the rearmost end meshes with the driven gear 6 located in the space enclosed by the housing, i.e., the second stage gear of the second duplicate gear C meshes with the driven gear 6. The power of the power source can be transmitted to the driven gear 6 through the driving gear 4, the first duplicate gear a, the second duplicate gear a, the first duplicate gear B, the second duplicate gear B, the first duplicate gear C and the second duplicate gear C in sequence.

The first bevel gear 1 and the second bevel gear 2 are arranged in a space surrounded by a shell. The first bevel gear 1 and the driven gear 6 are fixedly sleeved on a transmission shaft 7, a bearing chamber is formed in the shell, and the transmission shaft 7 is supported by bearings 8 arranged in the two bearing chambers. The second bevel gear 2 is engaged with the first bevel gear 1 and is fixedly sleeved on an output shaft 9, a bearing chamber is formed in the housing, and the output shaft 9 is supported by bearings 8 arranged in the two bearing chambers.

Referring now to fig. 2 and 3, in particular, the housing includes a first direction sub-housing 10, a second direction sub-housing 11, and a sub-housing connection member 12. The sub-housing connecting piece 12 is fixedly connected with the first direction sub-housing 10 and the second direction sub-housing 11 at the same time.

In one embodiment, the sub-housing connection member 12 is generally cylindrical, and an upper end surface thereof is formed with an upward protruding fixing post 13, and a lower end surface of the first direction sub-housing 10 is recessed to form a blind hole (not shown) engaged with the fixing post 13, so that the fixing connection between the first direction sub-housing 10 and the sub-housing connection member 12 is realized by the cooperation of the fixing post 13 and the blind hole. An adhesive can be further applied between the lower end surface of the first direction sub-housing 10 and the upper end surface of the sub-housing connection member 12 to improve the connection stability between the two. Of course, the first direction sub-housing 10 and the sub-housing connection member 12 can be fixed in other ways, which are not listed here.

The second direction sub-housing 11 is formed with a second annular connecting portion 14 surrounding the outer circumferential wall of the sub-housing connecting member 12, and the second annular connecting portion 14 is provided with a bolt and is fixedly connected to the sub-housing connecting member 12 by the bolt. Of course, the second direction sub-housing 11 and the sub-housing connection member 12 can be fixed in other ways, which are not listed here.

The first double gear set, the second double gear set and the driven gear 6 are arranged in a space surrounded by the first direction sub-housing 10. One end of the first direction sub-housing 10 close to the sub-housing connection 12, i.e. the lower end of the first direction sub-housing 10, forms a bearing chamber, the sub-housing connection 12 forms a bearing chamber, and the drive shaft 7 is supported by bearings 8 arranged in both bearing chambers.

In order to facilitate the connection and fixation of the power source and the speed reducer, in this embodiment, an edge of one end of the first direction sub-housing 10, which is far away from the sub-housing connection member 12, extends outward to form a first annular connection portion 15, that is, an edge of an upper end of the first direction sub-housing 10 extends outward to form the first annular connection portion 15, and the first annular connection portion 15 is provided with a bolt, by which the power source extending into the first annular connection portion 15 can be locked. The driving gear 4 sleeved on the input end of the power source can penetrate through a through hole formed in one end, far away from the sub-shell connecting piece 12, of the first direction sub-shell 10, namely the upper end of the first direction sub-shell 10, and is meshed with the first-stage gear of the first duplicate gear 3 located at the foremost end.

The first bevel gear 1 and the second bevel gear 2 are arranged in a space surrounded by the second direction sub-housing 11. The second direction sub-housing 11 has two oppositely arranged bearing chambers formed therein, and the output shaft 9 is supported by bearings 8 arranged in the two bearing chambers. The axis of the transmission shaft 7 is perpendicular to the axis of the output shaft 9.

Claims

1. A speed reducer, comprising:

2. A decelerator according to claim 1, wherein: the edge of one end, far away from the sub-shell connecting piece, of the first direction sub-shell extends outwards to form a first annular connecting part, a bolt is arranged on the first annular connecting part, and a power source extending into the first annular connecting part can be locked through the bolt; the driving gear sleeved on the input end of the power source can penetrate through a through hole formed in one end, far away from the sub-shell connecting piece, of the first direction sub-shell and is meshed with the first-stage gear of the first duplicate gear located at the foremost end.

3. A decelerator according to claim 1, wherein: one end of the first direction sub-housing, which is close to the sub-housing connection member, forms a bearing chamber, the sub-housing connection member forms a bearing chamber, and the transmission shaft is supported by bearings arranged in the two bearing chambers.

4. A decelerator according to claim 1, wherein: the second direction sub-housing is formed with a second annular connecting portion surrounding the outer peripheral wall of the sub-housing connecting member, and the second annular connecting portion is provided with a bolt and is fixedly connected with the sub-housing connecting member through the bolt.

5. A decelerator according to claim 1, wherein: the second direction sub-housing is internally formed with two oppositely arranged bearing chambers, and the output shaft is supported by bearings arranged in the two bearing chambers.

6. A decelerator according to any one of claims 1 to 5, wherein: the axis where the transmission shaft is located is perpendicular to the axis where the output shaft is located.