CN210106532U

CN210106532U - Output shaft for precision planetary reducer

Info

Publication number: CN210106532U
Application number: CN201920910539.9U
Authority: CN
Inventors: 江建斌; 江建敏; 姚文龙
Original assignee: ZHEJIANG SANKAI MECHANICAL AND ELECTRICAL CO Ltd
Current assignee: ZHEJIANG SANKAI MECHANICAL AND ELECTRICAL CO Ltd
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-02-21
Anticipated expiration: 2029-06-17

Abstract

The utility model provides an output shaft for accurate planetary reducer belongs to mechanical technical field. The utility model discloses in, the speed reducer is including the casing that is the tube-shape, this output shaft is including locating the body in the casing, the body rotates with the casing through the bearing to be connected, the body right-hand member has the planet chamber, body left end integrated into one piece has the pivot, the pivot is located outside the casing, the junction of pivot and body is equipped with the strengthening rib, the strengthening rib is the right angled triangle structure, and strengthening rib and body formula structure as an organic whole, the strengthening rib has two at least and along the pivot circumference equipartition; the supporting sleeve is sleeved and fixed outside the body, the right end of the supporting sleeve is pressed against the inner ring of the bearing, an annular convex shoulder is arranged on the inner side wall of the left end of the supporting sleeve, the annular convex shoulder is sleeved outside the rotating shaft, the inner wall of the annular convex shoulder is a conical surface matched with the inclined surfaces of the reinforcing ribs, and the inclined surfaces of all the reinforcing ribs are attached to the conical surface. This precision is output shaft structure for planetary reducer is comparatively stable.

Description

Output shaft for precision planetary reducer

Technical Field

The utility model belongs to the technical field of machinery, a accurate planetary reducer is related to, especially an output shaft for accurate planetary reducer.

Background

The precision planetary reducer is another name for planetary reducer in industry, and its main transmission structure is: planet wheel, sun gear and ring gear. Compared with other speed reducers, the precision planetary speed reducer has the characteristics of high rigidity, high precision, high transmission efficiency (the single stage is 97-98%), high torque/volume ratio, no maintenance for life and the like.

The existing precision planetary reducer generally comprises a shell, an input shaft and an output shaft which are arranged in the shell, and the input shaft and the output shaft are connected through a planetary reduction mechanism. Wherein, the output shaft is including locating the body in the casing, and the right-hand member of body has the planet chamber that is used for installing planetary gear, and the left end integrated into one piece of body has the pivot, and the pivot is located outside the casing.

In the actual product, there is the tool escape groove in the junction of pivot and body, can remain certain stress, takes place disconnected axle risk easily when the output shaft receives great radial force in the use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a stable in structure's output shaft for accurate planetary reducer.

The purpose of the utility model can be realized by the following technical proposal: an output shaft for a precision planetary reducer comprises a cylindrical shell, the output shaft comprises a body arranged in the shell, the body is rotatably connected with the shell through a bearing, a planetary cavity is arranged at the right end of the body, a rotating shaft is integrally formed at the left end of the body and is positioned outside the shell, and the output shaft is characterized in that reinforcing ribs are arranged at the joint of the rotating shaft and the body, the reinforcing ribs are of a right-angled triangle structure, the reinforcing ribs and the body are of an integral structure, and at least two reinforcing ribs are uniformly distributed along the circumferential direction of the rotating shaft; the supporting sleeve is sleeved and fixed outside the body, the right end of the supporting sleeve is pressed against the inner ring of the bearing, an annular convex shoulder is arranged on the inner side wall of the left end of the supporting sleeve, the annular convex shoulder is sleeved outside the rotating shaft, the inner wall of the annular convex shoulder is a conical surface matched with the inclined surfaces of the reinforcing ribs, and the inclined surfaces of all the reinforcing ribs are attached to the conical surface.

Under the combined action of the reinforcing ribs and the conical surfaces of the annular convex shoulders, which are pressed against the inclined surfaces of all the reinforcing ribs, the connecting part of the rotating shaft and the body is effectively supported in the radial direction, so that the connecting part is effectively prevented from being broken under the action of stress, and the structural stability and the transmission precision are effectively improved.

In the output shaft for the precision planetary reducer, the support sleeve is detachably and fixedly connected with the body through a threaded structure.

In foretell precision output shaft for planetary reducer, support cover and casing between be equipped with and be annular skeleton oil blanket, and skeleton oil blanket and casing link firmly, the inner wall of skeleton oil blanket closely supports with the outer wall that supports the cover and supports, and the outer wall of skeleton oil blanket closely supports with the inner wall of casing and supports and lean on.

The supporting sleeve is detachably connected with the body through threads so as to facilitate the disassembly and assembly of the framework oil seal.

In the output shaft for the precision planetary reducer, the right end face of the annular convex shoulder is pressed against the left end face of the body so as to increase the contact area between the support sleeve and the body and increase the connection stability between the support sleeve and the body.

In the output shaft for the precision planetary reducer, the inner side wall of the shell is integrally formed with the annular retaining shoulder, the annular retaining shoulder and the shell are coaxially arranged, the bearing is located between the annular retaining shoulder and the annular convex shoulder, and the outer ring of the bearing is pressed against the annular retaining shoulder.

Compared with the prior art, the output shaft for the precision planetary reducer has the following advantages:

1. under the combined action of the reinforcing ribs and the conical surfaces of the annular convex shoulders, which are pressed against the inclined surfaces of all the reinforcing ribs, the connecting part of the rotating shaft and the body is effectively supported in the radial direction, so that the connecting part is effectively prevented from being broken under the action of stress, and the structural stability and the transmission precision are effectively improved.

2. Under the clamping of the annular retaining shoulders on the support sleeve and the shell, the bearing is effectively limited in the axial direction, so that the axial movement of the bearing is inhibited, and the stability of the whole transmission is improved.

Drawings

Fig. 1 is a schematic structural view of a precision planetary reducer.

Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.

In the figure, 1, a housing; 1a, an annular retaining shoulder; 2. a body; 2a, a planetary cavity; 2b, a rotating shaft; 2c, reinforcing ribs; 2c1, inclined plane; 3. a bearing; 4. a support sleeve; 4a, an annular shoulder; 4a1, a conical surface; 5. and (5) framework oil seal.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, in the output shaft for the precision planetary reduction gear, the reduction gear includes a cylindrical housing 1, and the output shaft includes a main body 2 provided in the housing 1, and the main body 2 is rotatably connected to the housing 1 through a bearing 3.

Specifically, as shown in fig. 1 and 2, the right end of the body 2 has a cylindrical planetary cavity 2a for mounting a planetary gear, the left end of the body 2 is integrally formed with a rotating shaft 2b, and the rotating shaft 2b is located outside the housing 1. The junction of pivot 2b and body 2 is equipped with strengthening rib 2c, and strengthening rib 2c is the right triangle structure, and strengthening

rib

2c and 2 formula structures as an organic whole of body. At least two reinforcing ribs 2c are uniformly distributed along the circumferential direction of the rotating shaft 2 b. In the present embodiment, the number of the reinforcing ribs 2c is preferably four. The body 2 is sleeved and fixed with a support sleeve 4, the right end of the support sleeve 4 is pressed against the inner ring of the bearing 3, the inner side wall of the left end of the support sleeve 4 is provided with an annular convex shoulder 4a, the annular convex shoulder 4a is sleeved outside the rotating shaft 2b, the inner wall of the annular convex shoulder 4a is a conical surface 4a1 matched with the inclined surface 2c1 of the reinforcing ribs 2c, and the inclined surfaces 2c1 of all the reinforcing ribs 2c are attached to the conical surface 4a 1.

Wherein, support set 4 and body 2 and can dismantle the firm connection through helicitic texture. Support to be equipped with between cover 4 and the casing 1 and be annular skeleton oil blanket 5, and skeleton oil blanket 5 and casing 1 link firmly, the inner wall of skeleton oil blanket 5 closely supports with the outer wall that supports cover 4 and supports, and the outer wall of skeleton oil blanket 5 closely supports with the inner wall of casing 1 and supports. Preferably, the framework oil seal 5 is fixedly connected with the shell 1 in a close fit mode.

Further, the right end face of the annular shoulder 4a abuts against the left end face of the body 2, an annular retaining shoulder 1a is integrally formed on the inner side wall of the shell 1, the annular retaining shoulder 1a and the shell 1 are coaxially arranged, the bearing 3 is located between the annular retaining shoulder 1a and the annular shoulder 4a, and the outer ring of the bearing 3 abuts against the annular retaining shoulder 1 a.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides an output shaft for precision planetary reducer, the speed reducer is including being casing (1) of tube-shape, this output shaft is including locating body (2) in casing (1), and body (2) rotate with casing (1) through bearing (3) and are connected, the right-hand member of body (2) has planet chamber (2a), the left end integrated into one piece of body (2) has pivot (2b), and pivot (2b) are located outside casing (1), a serial communication port, the junction of pivot (2b) and body (2) is equipped with strengthening rib (2c), strengthening rib (2c) are the right angle triangle structure, and strengthening rib (2c) and body (2) formula structure as an organic whole, strengthening rib (2c) have two at least and along the circumference equipartition of pivot (2 b); the body (2) is sleeved and fixed with a supporting sleeve (4), the right end of the supporting sleeve (4) is pressed against the inner ring of the bearing (3), the inner side wall of the left end of the supporting sleeve (4) is provided with an annular convex shoulder (4a), the annular convex shoulder (4a) is sleeved outside the rotating shaft (2b), the inner wall of the annular convex shoulder (4a) is a conical surface (4a1) matched with the inclined surface (2c1) of the reinforcing rib (2c), and the inclined surfaces (2c1) of all the reinforcing ribs (2c) are attached to the conical surface (4a 1).

2. The output shaft for the precision planetary reducer of claim 1, wherein the support sleeve (4) is detachably and fixedly connected with the body (2) through a thread structure.

3. The output shaft for the precision planetary reducer of claim 2, wherein an annular framework oil seal (5) is arranged between the support sleeve (4) and the housing (1), the framework oil seal (5) is fixedly connected with the housing (1), the inner wall of the framework oil seal (5) is tightly abutted against the outer wall of the support sleeve (4), and the outer wall of the framework oil seal (5) is tightly abutted against the inner wall of the housing (1).

4. An output shaft for a precision planetary reduction gear according to claim 1, 2 or 3, wherein the right end face of the annular shoulder (4a) is pressed against the left end face of the body (2).

5. The output shaft for the precision planetary reducer according to claim 1, 2 or 3, wherein the inner side wall of the housing (1) is integrally formed with an annular retaining shoulder (1a), the annular retaining shoulder (1a) and the housing (1) are coaxially arranged, the bearing (3) is located between the annular retaining shoulder (1a) and the annular shoulder (4a), and the outer ring of the bearing (3) is pressed against the annular retaining shoulder (1 a).