CN217508471U

CN217508471U - Connecting structure

Info

Publication number: CN217508471U
Application number: CN202221495352.5U
Authority: CN
Inventors: 王颖; 嵇耀; 刘力波; 姬中晴; 顾炀
Original assignee: Nanjing High Speed and Accurate Gear Group Co Ltd
Current assignee: Nanjing High Speed and Accurate Gear Group Co Ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-09-27
Anticipated expiration: 2032-06-15

Abstract

The utility model discloses a connecting structure, which is used for connecting a first rotating shaft and a second rotating shaft, wherein, the connecting structure comprises a shaft sleeve and a limiting structure, one end of the shaft sleeve along the axial direction is fixedly connected with the first rotating shaft, and the other end is detachably connected with the second rotating shaft; along the axial of first pivot, limit structure sets up between first pivot and second pivot, and limit structure can inject the second pivot along the axial position for first pivot. This connection structure can connect first pivot and second pivot, and for prior art need not the lubricating oil lubrication, can avoid the risk of the oil leak that is caused by lubricating oil, and simplified the structure, saved the cost.

Description

Connecting structure

Technical Field

The utility model relates to an engineering machine tool technical field especially relates to a connection structure.

Background

The power driving system of equipment in industries such as building materials, metallurgy and the like mostly consists of a motor and a speed reducer. In a driving system formed by a motor and a planetary gear structure, a spline is usually adopted to directly connect an output shaft of the motor with a sun gear of the planetary gear structure. This kind of connection structure receives the restriction of spline lubrication condition, and when being applicable to the motor of miniwatt, spline connection department can adopt the lubricating grease lubrication, and when the motor worked under high-power condition, spline connection department required fluid lubrication, but fluid is difficult sealed, has great oil leak risk, can produce adverse effect to the motor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a connection structure to solve among the prior art when the motor during operation under high-power condition, the difficult sealed problem that leads to having the oil leak risk of fluid.

To achieve the purpose, the utility model adopts the following technical proposal:

a connecting structure for connecting a first rotating shaft and a second rotating shaft, the connecting structure comprising:

one end of the shaft sleeve along the axial direction is fixedly connected with the first rotating shaft, and the other end of the shaft sleeve is detachably connected with the second rotating shaft;

and the limiting structure is arranged between the first rotating shaft and the second rotating shaft and can limit the position of the second rotating shaft relative to the first rotating shaft along the axial direction.

Preferably, the connecting structure further comprises a flat key, and the shaft sleeve is fixedly connected with the first rotating shaft through the flat key.

Preferably, the number of the flat keys is multiple, and the flat keys are distributed at intervals along the circumferential direction of the shaft sleeve.

Preferably, the second rotating shaft comprises a first shaft section and a second shaft section which are arranged at intervals along the axial direction, the first shaft section is provided with a plurality of gear shaping teeth at intervals along the circumferential direction, the other end of the shaft sleeve is provided with a plurality of slots at intervals along the circumferential direction, the gear shaping teeth and the slots are arranged in a one-to-one correspondence manner, and the gear shaping teeth are inserted into the slots along the axial direction.

Preferably, the first and second axle segments of the second axle are integrally formed.

Preferably, the limiting structure includes a first limiting member and a second limiting member, the first limiting member is detachably connected to the first rotating shaft, the second limiting member is detachably connected to the second rotating shaft, and the first limiting member and the second limiting member are axially abutted along the first rotating shaft.

Preferably, the first limiting part is provided with a first limiting surface, the second limiting part is provided with a second limiting surface, and the first limiting surface is abutted to the second limiting surface.

Preferably, one of the first limiting surface and the second limiting surface is a plane, and the other is a spherical surface.

Preferably, the first rotating shaft is an output shaft of a motor, and the second rotating shaft is a sun gear of a planetary gear structure.

Preferably, the motor further comprises a sealing assembly fixedly sleeved on the peripheral surface of the shaft sleeve, the sealing assembly is used for sealing a gap between the shaft sleeve and the motor box body, and the shaft sleeve is rotatably connected to the motor box body.

The utility model has the advantages that:

an object of the utility model is to provide a connection structure, this connection structure is used for connecting first pivot and second pivot, wherein, connection structure includes axle sleeve and limit structure, this connection structure, through setting up the axle sleeve, the axle sleeve is along axial one end and first pivot fixed connection, the other end and second pivot can be dismantled and connect, thereby realize connecting first pivot and second pivot, when first pivot rotated, first pivot drove the rotation of second pivot through the axle sleeve, thereby realized the linkage of first pivot and second pivot; secondly, through setting up spacing subassembly, spacing subassembly sets up between first pivot and second pivot to can follow the relative position of axial limited first pivot and second pivot. This connection structure can connect first pivot and second pivot, and for prior art need not the lubricating oil lubrication, can avoid the risk of the oil leak that is caused by lubricating oil, and simplified the structure, saved the cost.

Drawings

FIG. 1 is a schematic structural view of a connection structure provided in an embodiment of the present invention;

fig. 2 is a partial view of fig. 1 at a.

In the figure:

100. a first rotating shaft; 200. a second rotating shaft; 210. a first axle segment; 220. a second axle segment; 300. a motor box body;

1. a shaft sleeve;

2. a limiting structure; 21. a first limit piece; 211. a first limiting surface; 22. a second limit piece; 221. a second limiting surface;

3. a flat bond;

4. and (7) sealing the assembly.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The utility model provides a connecting structure, as shown in fig. 1, the connecting structure is used for connecting a first rotating shaft 100 and a second rotating shaft 200, wherein, the connecting structure comprises a shaft sleeve 1 and a limiting structure 2, one end of the shaft sleeve 1 along the axial direction is fixedly connected with the first rotating shaft 100, and the other end is detachably connected with the second rotating shaft 200; along the axial direction of the first rotating shaft 100, the limiting structure 2 is arranged between the first rotating shaft 100 and the second rotating shaft 200, and the limiting structure 2 can limit the position of the second rotating shaft 200 relative to the first rotating shaft 100 along the axial direction.

As shown in fig. 1, in the connection structure, by providing a shaft sleeve 1, one end of the shaft sleeve 1 in the axial direction is fixedly connected with a first rotating shaft 100, and the other end is detachably connected with a second rotating shaft 200, so as to connect the first rotating shaft 100 with the second rotating shaft 200, and when the first rotating shaft 100 rotates, the first rotating shaft 100 drives the second rotating shaft 200 to rotate through the shaft sleeve 1, so as to realize linkage of the first rotating shaft 100 and the second rotating shaft 200; secondly, by providing the limit assembly, the limit assembly is disposed between the first rotating shaft 100 and the second rotating shaft 200, so that the relative positions of the first rotating shaft 100 and the second rotating shaft 200 can be axially defined. This connection structure can connect first pivot 100 and second pivot 200, and for prior art need not the lubricating oil lubrication, can avoid the risk of the oil leak that is caused by lubricating oil, and has simplified the structure, has saved the cost.

As shown in fig. 1, the connection structure further includes a flat key 3, and the shaft sleeve 1 and the first rotating shaft 100 are fixedly connected through the flat key 3. Thereby achieving the fixed connection of the sleeve 1 and the first rotating shaft 100.

Preferably, the number of the flat keys 3 is multiple, and the plurality of flat keys 3 are distributed at intervals along the circumferential direction of the shaft sleeve 1. Through setting up a plurality of flat keys 3, a plurality of flat keys 3 set up along the circumference interval of axle sleeve 1, and all are used for connecting axle sleeve 1 and first pivot 100 to the connection reliability of axle sleeve 1 and first pivot 100 has been strengthened.

As shown in fig. 1, the second rotating shaft 200 includes a first shaft segment 210 and a second shaft segment 220 that are arranged at intervals along the axial direction, the first shaft segment 210 is provided with a plurality of gear shaping teeth at intervals along the circumferential direction, the other end of the shaft sleeve 1 is provided with a plurality of slots at intervals along the circumferential direction, the plurality of gear shaping teeth and the plurality of slots are arranged in a one-to-one correspondence manner, and the gear shaping teeth are inserted into the slots along the axial direction. The arrangement is that the second rotating shaft 200 is detachably connected with the shaft sleeve 1, the first rotating shaft 100 is in key connection with the shaft sleeve 1, so that the first rotating shaft 100 is connected with the second rotating shaft 200 through the shaft sleeve 1, and when the first rotating shaft 100 rotates, the first rotating shaft 100 drives the second rotating shaft 200 to rotate through the shaft sleeve 1, so that the first rotating shaft 100 and the second rotating shaft 200 are linked; wherein, set up along axial interval through setting up first shaft section 210 and second shaft section 220 to make first shaft section 210 and second shaft section 220 mutual noninterference, when first pivot 100 drives second pivot 200 and rotates, second shaft section 220 can drive other subassembly works.

Preferably, the first and

second hub segments

210 and 220 of the second shaft 200 are integrally formed. Thereby enhancing the structural reliability of the second rotating shaft 200. Specifically, the second rotating shaft 200 is provided with a separation groove, which is located between the first and

second axle segments

210 and 220 in the axial direction of the second rotating shaft 200.

As shown in fig. 1 and fig. 2, the limiting structure 2 includes a first limiting member 21 and a second limiting member 22, the first limiting member 21 is detachably connected to the first rotating shaft 100, the second limiting member 22 is detachably connected to the second rotating shaft 200, and the first limiting member 21 and the second limiting member 22 are abutted along the axial direction of the first rotating shaft 100. Thereby realizing that the relative positions of the first rotating shaft 100 and the second rotating shaft 200 along the axial direction are limited by the first limiting piece 21 and the second limiting piece 22.

Specifically, as shown in fig. 1 and fig. 2, the first limiting member 21 is provided with a first limiting surface 211, the second limiting member 22 is provided with a second limiting surface 221, and the first limiting surface 211 abuts against the second limiting surface 221. Thereby realizing that the relative positions of the first rotating shaft 100 and the second rotating shaft 200 are limited by the first limiting surface 211 of the first limiting member 21 and the second limiting surface 221 of the second limiting member 22.

More specifically, as shown in fig. 1 and 2, one of the first stopper surface 211 and the second stopper surface 221 is a flat surface, and the other is a spherical surface. So set up, can reduce the area of contact of first spacing face 211 and second spacing face 221, and can reduce the assembly degree of difficulty. Specifically, in the present embodiment, the first limiting surface 211 is a plane, and the second limiting surface 221 is a spherical surface.

More specifically, the first limiting member 21 is screwed to the first rotating shaft 100 through a first screw; the second limiting member 22 is screwed to the second rotating shaft 200 through a second screw. So set up, be convenient for assemble, dismantle, later maintenance or change connection structure. Specifically, the second limiting member 22 is threadedly connected to the first axle segment 210 of the second rotating axle 200 through a second screw.

Specifically, in the present embodiment, the first rotating shaft 100 is an output shaft of a motor, and the second rotating shaft 200 is a sun gear of a planetary gear structure. Thereby realize connecting the output shaft of motor and the sun gear of planet wheel structure through connection structure, need not the lubricating oil lubrication for prior art, can avoid the risk of the oil leak that is caused by lubricating oil, and simplified the structure, saved the cost.

As shown in fig. 1, the motor further includes a sealing assembly 4 fixedly sleeved on the outer peripheral surface of the shaft sleeve 1, the sealing assembly 4 is used for sealing a gap between the shaft sleeve 1 and the motor case 300, and the shaft sleeve 1 is rotatably connected to the motor case 300. Through setting up seal assembly 4, seal assembly 4 can seal the clearance between axle sleeve 1 and the motor box 300, rotate through setting up axle sleeve 1 and connect in motor box 300 for the output shaft of motor can effectively drive the sun gear rotation of planet wheel structure, wherein, the sun gear of planet wheel structure still meshes with the planet wheel of planet wheel structure, thereby drives planet wheel work, specifically, the second wheel shaft section 220 of sun gear meshes with the planet wheel of planet wheel structure.

The specific structure of the sealing assembly 4 is the prior art, and is not described herein again; the specific structure of the planetary gear structure is the prior art, and is not described herein again.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A connecting structure for connecting a first rotating shaft (100) and a second rotating shaft (200), characterized by comprising:

one end of the shaft sleeve (1) along the axial direction is fixedly connected with the first rotating shaft (100), and the other end of the shaft sleeve (1) is detachably connected with the second rotating shaft (200);

the limiting structure (2) is arranged between the first rotating shaft (100) and the second rotating shaft (200) along the axial direction of the first rotating shaft (100), and the limiting structure (2) can limit the position of the second rotating shaft (200) relative to the first rotating shaft (100) along the axial direction.

2. The connection structure according to claim 1, further comprising a flat key (3), wherein the shaft sleeve (1) and the first rotation shaft (100) are fixedly connected through the flat key (3).

3. The connection structure according to claim 2, wherein the flat key (3) is provided in plurality, and the plurality of flat keys (3) are spaced apart from each other in the circumferential direction of the sleeve (1).

4. The connecting structure according to claim 1, wherein the second rotating shaft (200) comprises a first shaft section (210) and a second shaft section (220) which are arranged at intervals along the axial direction, the first shaft section (210) is provided with a plurality of gear shaping teeth at intervals along the circumferential direction, the other end of the shaft sleeve (1) is provided with a plurality of slots at intervals along the circumferential direction, the plurality of gear shaping teeth and the plurality of slots are arranged in a one-to-one correspondence manner, and the gear shaping teeth are inserted into the slots along the axial direction.

5. The connecting structure according to claim 4, wherein the first and second hub segments (210, 220) of the second rotating shaft (200) are integrally formed.

6. The connecting structure according to any one of claims 1 to 5, wherein the limiting structure (2) comprises a first limiting member (21) and a second limiting member (22), the first limiting member (21) is detachably connected to the first rotating shaft (100), the second limiting member (22) is detachably connected to the second rotating shaft (200), and the first limiting member (21) and the second limiting member (22) are abutted along the axial direction of the first rotating shaft (100).

7. The connecting structure according to claim 6, wherein the first limiting member (21) is provided with a first limiting surface (211), the second limiting member (22) is provided with a second limiting surface (221), and the first limiting surface (211) and the second limiting surface (221) are abutted.

8. The connecting structure according to claim 7, wherein one of the first stopper surface (211) and the second stopper surface (221) is a flat surface, and the other is a spherical surface.

9. A connection arrangement according to any of claims 1-5, characterised in that the first rotation shaft (100) is the output shaft of an electric machine and the second rotation shaft (200) is the sun gear of a planetary gear arrangement.

10. The connecting structure according to claim 9, wherein the motor further comprises a sealing assembly (4) fixedly sleeved on the outer peripheral surface of the shaft sleeve (1), the sealing assembly (4) is used for sealing a gap between the shaft sleeve (1) and a motor case (300), and the shaft sleeve (1) is rotatably connected to the motor case (300).