CN217207572U

CN217207572U - Welding type planetary reducer

Info

Publication number: CN217207572U
Application number: CN202123442931.1U
Authority: CN
Inventors: 王道
Original assignee: Changzhou Nanpeng Machinery Co ltd
Current assignee: Changzhou Nanpeng Machinery Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-08-16
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to the technical field of planetary reducers, in particular to a welded planetary reducer, wherein a planet carrier comprises a planet carrier body, a middle shaft section and an output shaft section, the outer end of the planet carrier body is coaxially and fixedly connected with the middle shaft section, the middle shaft section is coaxially and fixedly connected with the output shaft section, and a step surface is formed between the middle shaft section and the output shaft section; the outer end of the middle shaft section and the inner end of the output gear are fixed through laser welding, and the outer end of the output gear and the outer end of the output shaft section are fixed through laser welding; the utility model discloses a set up middle shaft section and output shaft section on the planet carrier to form the step face, so output gear can overlap and establish on output shaft section, and carry out axial positioning by the step face, all adopt laser welding at output gear's front and back both ends simultaneously, make output gear's both ends all can be fixed by laser welding, ensure joint strength, have with low costs and be convenient for freely choose for use the output gear's of different specifications advantage.

Description

Welding type planetary reducer

Technical Field

The utility model belongs to the technical field of planetary reducer technique and specifically relates to a welding formula planetary reducer.

Background

The planetary reducer mainly comprises a gear ring, a sun gear, a planet carrier and a planetary gear, has the characteristics of small structural size, large output torque, large speed ratio, high efficiency, safe and reliable performance and the like, and is widely applied to industrial departments of hoisting transportation, engineering machinery, metallurgy, mines, petrochemical industry, construction machinery, light textile, medical instruments, instruments and meters, automobiles, ships, weapons, aerospace and the like;

at present, the planet carrier is used as a power output planetary reducer, an output gear on the planet carrier is integrally formed with the planet carrier, and the structure has the problems that gear teeth of the output gear on the planet carrier are difficult to process, so that the cost is high.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problem that the output gear on the planet carrier is integrally formed with the planet carrier in the planetary speed reducer in the prior art, so that the gear teeth of the output gear on the planet carrier are difficult to process, and the cost is high, the welding type planetary speed reducer is provided.

The utility model provides a technical scheme that its technical problem adopted is: a welded planetary reducer comprises a mounting seat, a gear ring, a planet carrier, a sun gear and an output gear, wherein the gear ring is fixedly connected with the mounting seat, the planet carrier is arranged in the gear ring, the planet carrier is rotatably provided with the planet gear, the sun gear is meshed with the planet gear, the planet gear is meshed with the gear ring, the planet carrier comprises a planet carrier body, a middle shaft section and an output shaft section, the outer end of the planet carrier body is coaxially and fixedly connected with the middle shaft section, the middle shaft section is coaxially and fixedly connected with the output shaft section, a step surface is formed between the middle shaft section and the output shaft section, and a shaft hole of the output gear is matched with the output shaft section;

the shaft hole sleeve of output gear establishes on the output shaft section, the inner terminal surface and the step face contact of output gear, and fixed through laser welding between the outer end of middle shaft section and the inner of output gear, it is fixed through laser welding between the outer end of output gear and the outer end of output shaft section.

Furthermore, a threaded hole is formed in the end portion of the outer end of the output shaft section, a screw is connected to the threaded hole in an internal thread mode, and the head portion of the screw abuts against the end portion of the outer end of the output shaft section.

Furthermore, a first annular groove with a V-shaped section is formed between the outer end of the middle shaft section and the inner end of the output gear.

Furthermore, a second annular groove with a V-shaped section is formed between the outer end of the output gear and the outer end of the output shaft section.

Further, the periphery wall of middle shaft section is gone up the protrusion and is had coaxial setting annular arch, dispose the skeleton oil blanket between the bellied periphery wall of annular and the internal perisporium of ring gear.

Further, planet carrier body, intermediate shaft section, annular protrusion and output shaft section integrated into one piece.

The beneficial effects of the utility model are that: the utility model discloses welded type planetary reducer adopts and sets up middle shaft section and output shaft section on the planet carrier to form the step face, so output gear can overlap and establish on the output shaft section, and carry out axial positioning by the step face, all adopt laser welding at output gear's front and back both ends simultaneously, make output gear's both ends all can be fixed by laser welding, ensure joint strength, have with low costs and be convenient for freely select for use the output gear's of different specifications advantage.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic diagram of the welding type planetary reducer of the present invention.

In the figure: 1. the planet carrier comprises a mounting seat, 2, a gear ring, 3, a planet carrier, 301, a planet carrier body, 302, a middle shaft section, 3021, an annular bulge, 303, an output shaft section, 3031, a threaded hole, 304 and a step surface;

4. the planetary gear comprises a sun gear 5, an output gear 6, a first annular groove 7, a second annular groove 8, a framework oil seal 9 and a planetary gear.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings, which illustrate the basic structure of the invention only in a schematic way, and thus show only the components that are relevant to the invention, and the directions and references (e.g., upper, lower, left, right, etc.) may be used only to help describe the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.

Example 1

As shown in fig. 1, a welded planetary reducer includes a mounting base 1, a ring gear 2, a planet carrier 3, a sun gear 4 and an output gear 5, the ring gear 2 is fixedly connected with the mounting base 1, the planet carrier 3 is configured in the ring gear 2, a planet gear 9 is rotatably mounted on the planet carrier 3, the sun gear 4 is meshed with the planet gear 9, the planet gear 9 is meshed with the ring gear 2, the planet carrier 3 includes a planet carrier body 301, a middle shaft section 302 and an output shaft section 303, the outer end of the planet carrier body 301 is coaxially and fixedly connected with the middle shaft section 302, the middle shaft section 302 is coaxially and fixedly connected with the output shaft section 303, a step surface 304 is formed between the middle shaft section 302 and the output shaft section 303, and a shaft hole of the output gear 5 is matched with the output shaft section 303;

the shaft hole of the output gear 5 is sleeved on the output shaft section 303, the end surface of the inner end of the output gear 5 is in contact with the step surface 304, the outer end of the middle shaft section 302 and the inner end of the output gear 5 are fixed through laser welding, and the outer end of the output gear 5 and the outer end of the output shaft section 303 are fixed through laser welding.

A threaded hole 3031 is formed in the end part of the outer end of the output shaft section 303, a screw is connected to the threaded hole 3031 in an internal thread mode, and the head of the screw abuts against the end part of the outer end of the output shaft section 303; by means of the arrangement of the screws, the output gear 5 can be fixed on the output shaft section 303 in advance, laser welding is facilitated, and meanwhile, the connection strength can also be improved.

A first annular groove 6 with a V-shaped section is formed between the outer end of the middle shaft section 302 and the inner end of the output gear 5; by performing laser welding at the first annular groove 6, the welding strength between the outer end of the intermediate shaft section 302 and the inner end of the output gear 5 can be improved.

A second annular groove 7 with a V-shaped section is formed between the outer end of the output gear 5 and the outer end of the output shaft section 303; by performing laser welding at the second annular groove 7, the welding strength between the outer end of the output gear 5 and the outer end of the output shaft segment 303 can be improved.

An annular bulge 3021 is coaxially arranged on the outer peripheral wall of the middle shaft section 302 in a protruding mode, and a framework oil seal 8 is arranged between the outer peripheral wall of the annular bulge 3021 and the inner peripheral wall of the gear ring 2; thereby improving the sealing performance.

Compared with the prior art, the planetary reducer in the embodiment adopts the structure that the middle shaft section 302 and the output shaft section 303 are arranged on the planet carrier 3 to form the step surface 304, so that the output gear 5 can be sleeved on the output shaft section 303 and axially positioned by the step surface 304, and meanwhile, the front end and the rear end of the output gear 5 are both subjected to laser welding, so that the two ends of the output gear 5 are both fixed by the laser welding, the connection strength is ensured, and the planetary reducer has the advantages of low cost and convenience in freely selecting the output gears 5 with different specifications; in addition, the output gear 5 can be fixed on the output shaft section 303 in advance by the arrangement of the screw, so that laser welding is facilitated, and the connection strength can be improved. In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a welded planetary reducer, includes mount pad (1), ring gear (2), planet carrier (3), sun gear (4) and output gear (5), ring gear (2) and mount pad (1) fixed connection, planet carrier (3) configuration is in ring gear (2), it installs planetary gear (9) to rotate on planet carrier (3), sun gear (4) and planetary gear (9) meshing, planetary gear (9) and ring gear (2) meshing, its characterized in that: the planet carrier (3) comprises a planet carrier body (301), a middle shaft section (302) and an output shaft section (303), the outer end of the planet carrier body (301) is coaxially and fixedly connected with the middle shaft section (302), the middle shaft section (302) is coaxially and fixedly connected with the output shaft section (303), a step surface (304) is formed between the middle shaft section (302) and the output shaft section (303), and a shaft hole of the output gear (5) is matched with the output shaft section (303);

the shaft hole sleeve of output gear (5) is established on output shaft section (303), the inner end face and the step face (304) contact of output gear (5), and it is fixed through laser welding between the outer end of middle shaft section (302) and the inner of output gear (5), it is fixed through laser welding between the outer end of output gear (5) and the outer end of output shaft section (303).

2. The welded planetary reducer according to claim 1, wherein: the outer end of the output shaft section (303) is provided with a threaded hole (3031), a screw is connected with the threaded hole (3031) in an internal thread mode, and the head of the screw abuts against the outer end of the output shaft section (303).

3. The welded planetary reducer according to claim 1, wherein: and a first annular groove (6) with a V-shaped section is formed between the outer end of the middle shaft section (302) and the inner end of the output gear (5).

4. The welded planetary reducer according to claim 1, wherein: and a second annular groove (7) with a V-shaped section is formed between the outer end of the output gear (5) and the outer end of the output shaft section (303).

5. The welded planetary reducer according to claim 1, wherein: the outer peripheral wall of the middle shaft section (302) is protruded with a coaxially arranged annular bulge (3021), and a framework oil seal (8) is arranged between the outer peripheral wall of the annular bulge (3021) and the inner peripheral wall of the gear ring (2).

6. The welded planetary reducer according to claim 1, wherein: the planet carrier body (301), the middle shaft section (302), the annular bulge (3021) and the output shaft section (303) are integrally formed.