CN215928259U

CN215928259U - Reduction gear set

Info

Publication number: CN215928259U
Application number: CN202121204038.2U
Authority: CN
Inventors: 周业刚; 范能胜; 还乔生
Original assignee: Jiangsu Sheng'an Transmission Co ltd
Current assignee: Jiangsu Sheng'an Transmission Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-03-01
Anticipated expiration: 2031-05-31

Abstract

The utility model discloses a reduction gear set which comprises an output gear, two planet pinions, a planet gear support, a sun gear and an inner gear ring. The reduction gear set utilizes the output gear, the two planet pinions, the inner gear ring and the sun gear to be helical teeth, improves the transmission stability of the gear set, enhances the bearing capacity of the gear set and prolongs the service life; the shaft shoulder and the shaft sleeve are used for facilitating axial positioning of the planet pinion, so that the planet pinion is prevented from slipping; the bearing is abutted against the annular step surface, so that the step shaft is conveniently supported, and the transmission stability of the planet pinion is enhanced; the input speed is reduced by the matching of the output gear, the two planet pinions, the inner gear ring and the sun gear.

Description

Reduction gear set

Technical Field

The utility model relates to a gear set, in particular to a reduction gear set.

Background

The planet reducing mechanism that present automobile used all is straight tooth structure basically, and the noise is big, and planet wheel antifriction gasket, sun gear antifriction gasket can wear and tear after using for a long time moreover, lead to gear engagement clearance to produce the change, therefore planet wheel reducing mechanism beats the tooth, fault rates such as generate heat are higher.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the reduction gear set can improve the transmission stability and increase the bearing capacity.

The technical scheme is as follows: the utility model provides a reduction gear set which comprises an output gear, two planet pinions, a planet gear support, a sun gear and an inner gear ring;

the teeth of the output gear, the two planet pinions, the inner gear ring and the sun gear are all helical teeth; the inner gear ring is coaxially and fixedly arranged on the right side surface of the output gear through a plurality of positioning bolts; two step shafts are rotatably arranged on the planet wheel bracket; the two planet pinions are respectively arranged on the two step shafts; a shaft shoulder is arranged on the step shaft, and the right side of the planet pinion is propped against the shaft shoulder; the two planet pinions are in central symmetry with respect to the axis of the inner gear ring and are positioned by the planet wheel support; an annular step surface is arranged on the circumferential surface on the right side of the hub of the output gear; the left ends of the two step shafts are respectively provided with a bearing, and the left sides of the bearings are abutted against the annular step surface; a shaft sleeve is sleeved on the step shaft and is positioned between the bearing and the planet pinion;

the two planet pinions are meshed with the inner gear ring; the sun gear is arranged in the inner gear ring and is simultaneously meshed with the two planet pinions.

Furthermore, a mounting groove is arranged on the left side surface of the output gear spoke.

Furthermore, an annular groove is arranged on the right side surface of the spoke of the output gear; the rim of the inner gear ring extends leftwards to form a cylinder; the left edge of the cylinder extends outwards along the radial direction to form an annular plate; the annular plate is buckled in the annular groove; the bottom of the annular groove is provided with a plurality of threaded holes, and the end part of each positioning bolt penetrates through the annular plate and is screwed on each threaded hole.

Furthermore, a plurality of positioning grooves are formed in the left side surface of the annular plate; the bottom of the annular groove is provided with a plurality of convex blocks which are buckled in the positioning grooves.

Furthermore, a key groove for mounting a key is arranged on the shaft hole of the sun wheel.

Furthermore, a clamp spring groove for installing a bearing clamp spring is arranged on a central hole of the output gear.

Compared with the prior art, the utility model has the beneficial effects that: the output gear, the two planet pinions, the inner gear ring and the sun gear are all helical teeth, so that the transmission stability of the gear set is improved, the bearing capacity of the gear set is enhanced, and the service life is prolonged; the shaft shoulder and the shaft sleeve are used for facilitating axial positioning of the planet pinion, so that the planet pinion is prevented from slipping; the bearing is abutted against the annular step surface, so that the step shaft is conveniently supported, and the transmission stability of the planet pinion is enhanced; the input speed is reduced by the matching of the output gear, the two planet pinions, the inner gear ring and the sun gear.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a right side view of the present invention;

fig. 3 is a left side view of the present invention.

Detailed Description

The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.

Example 1:

as shown in fig. 1 to 3, the present invention provides a reduction gear set comprising: comprises an output gear 1, two planet pinions 13, a planet wheel bracket 7, a sun gear 15 and an inner gear ring 2;

the teeth of the output gear 1, the two planet pinions 13, the inner gear ring 2 and the sun gear 15 are all helical teeth; the inner gear ring 2 is coaxially and fixedly arranged on the right side surface of the output gear 1 through a plurality of positioning bolts 12; two step shafts 8 are rotatably mounted on the planet wheel bracket 7; two planetary pinions 13 are respectively mounted on the two step shafts 8; a shaft shoulder 16 is arranged on the step shaft 8, and the right side of the planet pinion 13 is abutted against the shaft shoulder 16; the two planet pinions 13 are centrosymmetric about the axis of the inner gear ring 2 and are positioned by the planet wheel carrier 7; an annular step surface 9 is arranged on the circumferential surface of the right side of the hub of the output gear 1; the left ends of the two step shafts 8 are respectively provided with a bearing 5, and the left side of each bearing 5 is propped against the annular step surface 9; a shaft sleeve 6 is sleeved on the step shaft 8, and the shaft sleeve 6 is positioned between the bearing 5 and the planet pinion 13;

the two planet pinions 13 are meshed with the inner gear ring 2; the sun gear 15 is mounted in the ring gear 2, and the sun gear 15 simultaneously meshes with the two planet pinions 13.

The output gear 1, the two planet pinions 13, the inner gear ring 2 and the sun gear 15 are all helical teeth, so that the transmission stability of the gear set is improved, the bearing capacity of the gear set is enhanced, and the service life is prolonged; the shaft shoulder 16 and the shaft sleeve 5 are used for facilitating the axial positioning of the planet pinion 13 and preventing the planet pinion 13 from slipping; the bearing 5 is abutted against the annular step surface 9, so that the step shaft 8 is supported conveniently, and the transmission stability of the planet pinion 13 is enhanced; the reduction of the input rotational speed is achieved by the cooperation between the output gear 1, the two planet pinions 13, the ring gear 2 and the sun gear 15.

Further, a mounting groove 11 is provided on the left side surface of the spoke of the output gear 1. The installation groove 11 is used for facilitating the installation of marks such as two-dimensional codes and trademarks.

Furthermore, an annular groove 17 is arranged on the right side surface of the spoke of the output gear 1; the rim of the inner gear ring 2 extends leftwards to form a cylinder 18; the left side edge of the cylinder 18 extends radially outwardly to form an annular plate 14; the annular plate 14 is buckled in the annular groove 17; an annular cavity is formed between the cylinder 18 and the output gear 1; the bearing 5 is positioned in the annular cavity; a plurality of threaded holes are provided at the bottom of the annular groove 17, and the end of each positioning bolt 12 is screwed into each threaded hole after penetrating through the annular plate 14.

The annular plate 14 is buckled in the annular groove 17 to determine the relative position relation between the output gear 1 and the inner gear ring 2, so that the subsequent installation and fixation are facilitated; the inner gear ring 2 is fixed by the matching of the threaded hole and the positioning bolt 12, and the detachable installation of the inner gear ring 2 is realized; the annular cavity provides a mounting space for the bearing 5.

Further, a plurality of positioning grooves 4 are arranged on the left side surface of the annular plate 14; the bottom of the annular groove 17 is provided with a plurality of convex blocks 3 which are buckled in the positioning grooves 4.

The reliability of installation between the inner gear ring 2 and the output gear 1 is enhanced by the matching between the positioning groove 4 and the projection 3.

Further, a key groove 10 for mounting a key is provided in the shaft hole of the sun gear 15. The key installation using the key groove 10 ensures the synchronous rotation of the sun gear 15 and the drive shaft.

Further, a clamp spring groove 19 for installing a bearing clamp spring is arranged on the central hole of the output gear 1. The bearing clamp spring is arranged by utilizing the clamp spring groove 19, so that the axial position of the output gear 1 is fixed.

As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A reduction gear set characterized by: the planetary gear set comprises an output gear (1), two planetary pinions (13), a planetary gear support (7), a sun gear (15) and an inner gear ring (2);

the teeth of the output gear (1), the two planet pinions (13), the inner gear ring (2) and the sun gear (15) are all helical teeth; the inner gear ring (2) is coaxially and fixedly arranged on the right side surface of the output gear (1) through a plurality of positioning bolts (12); two step shafts (8) are rotatably arranged on the planet wheel bracket (7); the two planet pinions (13) are respectively arranged on the two step shafts (8); a shaft shoulder (16) is arranged on the step shaft (8), and the right side of the planet pinion (13) is propped against the shaft shoulder (16); the two planet pinions (13) are centrosymmetric about the axis of the inner gear ring (2) and are positioned by the planet wheel bracket (7); an annular step surface (9) is arranged on the circumferential surface of the right side of the hub of the output gear (1); the left ends of the two step shafts (8) are respectively provided with a bearing (5), and the left side of each bearing (5) is propped against the annular step surface (9); a shaft sleeve (6) is sleeved on the step shaft (8), and the shaft sleeve (6) is positioned between the bearing (5) and the planet pinion (13);

the two planet pinions (13) are meshed with the inner gear ring (2); the sun gear (15) is arranged in the inner gear ring (2), and the sun gear (15) is simultaneously meshed with the two planet pinions (13).

2. The reduction gear set of claim 1, wherein: the left side surface of the spoke of the output gear (1) is provided with an installation groove (11).

3. The reduction gear set of claim 1, wherein: an annular groove (17) is arranged on the right side surface of the spoke of the output gear (1); the rim of the inner gear ring (2) extends leftwards to form a cylinder (18); the left side edge of the cylinder (18) extends radially outward to form an annular plate (14); the annular plate (14) is buckled in the annular groove (17); an annular cavity is formed between the cylinder (18) and the output gear (1); the bearing (5) is positioned in the annular cavity; a plurality of threaded holes are formed in the bottom of the annular groove (17), and the end parts of the positioning bolts (12) penetrate through the annular plate (14) respectively and then are screwed in the threaded holes.

4. The reduction gear set of claim 3, wherein: a plurality of positioning grooves (4) are arranged on the left side surface of the annular plate (14); the bottom of the annular groove (17) is provided with a plurality of convex blocks (3) which are buckled in the positioning grooves (4).

5. The reduction gear set of claim 1, wherein: a key groove (10) for mounting a key is provided in the shaft hole of the sun gear (15).

6. The reduction gear set of claim 1, wherein: a clamp spring groove (19) for installing a bearing clamp spring is arranged on the central hole of the output gear (1).