WO2023216286A1

WO2023216286A1 - Transmission shaft gear

Info

Publication number: WO2023216286A1
Application number: PCT/CN2022/093555
Authority: WO
Inventors: 林冬明; 陈建伟; 林力
Original assignee: 浙江联合齿轮有限公司
Priority date: 2022-05-11
Filing date: 2022-05-18
Publication date: 2023-11-16
Also published as: CN217152708U

Abstract

A transmission shaft gear, comprising a gear body, wherein an axially protruding connecting sleeve is provided on the gear body, a shaft hole which is coaxially formed and used for allowing a transmission shaft to pass therethrough is formed at the centre of the connecting sleeve and the gear body, a heat dissipation structure is provided on the inner surface of the connecting sleeve and the inner surface of the gear body, a key groove is provided in the connecting sleeve, and a connecting member matching the key groove and used for increasing the connection stability of the gear body is provided on the connecting sleeve. The transmission shaft gear has the advantages of having connection stability and a good heat dissipation performance, and solves the problem of an existing transmission shaft gear having poor connection stability.

Description

drive shaft gear

Technical field

The utility model belongs to the technical field of gears and relates to a transmission shaft tooth.

Background technique

The shaft is a cylindrical object that goes through the middle of the bearing or the middle of the wheel or the middle of the gear, but there are also a few that are square. The shaft is a mechanical part that supports rotating parts and rotates with them to transmit motion, torque or bending moment. Generally, it is It is a metal round rod, and each segment can have a different diameter. The gear shaft is one of the common types of shafts. The gears on the shaft are continuously meshed for power transmission, thereby realizing the linkage of the mechanical structure.

The gear shafts currently on the market are integrally formed or assembled. Most of the assembled gear shafts are connected through keys. The inner surface of the gear is in direct contact with the surface of the shaft. Due to the relatively simple structure, During long-term work, loosening occurs due to vibration and other reasons, causing noise, and friction generates more heat, which affects the normal operation of the equipment.

technical problem

The purpose of this utility model is to provide a transmission shaft tooth with stable connection and good heat dissipation to solve the above problems.

Technical solutions

In order to achieve the above purpose, this utility model adopts the following technical solutions:

A transmission shaft gear, including a gear body, characterized in that the gear body is provided with an axially protruding connecting sleeve, and a coaxial line is provided at the center of the connecting sleeve and the gear body for There is a shaft hole for the transmission shaft to pass through. The inner surface of the connecting sleeve and the gear body is provided with a heat dissipation structure. The connecting sleeve is provided with a keyway and is provided with a connection that cooperates with the keyway to improve the stable connection of the gear body. pieces.

In the above-mentioned transmission shaft gear, the heat dissipation structure includes a first inscribed ring provided on the inner surface of the connecting sleeve and a second inscribed ring provided on the inner surface of the gear body. The first inscribed ring A heat dissipation ring cavity is formed between the ring and the second inscribed ring.

In the above-mentioned transmission shaft gear, the second inscribed ring is disposed on the end of the gear body away from the connecting platform and the side surface of the second inscribed ring is flush with the side surface of the gear body.

In the above-mentioned transmission shaft gear, the first inscribed ring is disposed on the end of the connecting sleeve away from the gear body and the side surface of the first inscribed ring is flush with the side surface of the connecting sleeve. The keyway is opened on the first internal ring.

In the above-mentioned transmission shaft gear, the keyway is transversely opened on the upper first inscribed ring, and the inner end of the keyway transversely penetrates the first inscribed ring and communicates with the inside of the heat dissipation ring cavity.

In the above-mentioned transmission shaft gear, the connecting piece and the keyway are arranged on the same vertical plane.

In the above-mentioned transmission shaft gear, the connecting piece includes an assembly part and a mounting part, the assembly part is provided at the lower end of the mounting part, and the connecting sleeve has an assembly hole for the assembly part to pass through.

In the above-mentioned transmission shaft gear, the mounting part and the mounting hole are fixed by threads.

In the above-mentioned transmission shaft gear, the connecting sleeve and the gear body are integrally formed

beneficial effects

Compared with the existing technology, the advantage of this utility model is that: the outer surface of the gear body is provided with a ring gear for transmission, the inner surface of the gear is provided with a shaft hole for the transmission shaft to pass through, and the gear body is connected through a connecting sleeve. Improve the stability of the connection. At the same time, the heat dissipation structure is used between the connecting sleeve, the gear body and the transmission shaft to improve the heat dissipation. The connector is used to connect the connecting sleeve and the transmission key after the transmission key is inserted into the keyway.

Other advantages, objects and features of the present invention will be partly reflected by the following description, and partly will be understood by those skilled in the art through the research and practice of the present invention.

Description of the drawings

Figure 1 is a schematic diagram of the connection structure of the present utility model.

Figure 2 is a schematic diagram of the overall structure of the present utility model.

In the picture, 1. Gear body; 2. Connecting sleeve; 3. Shaft hole; 4. Heat dissipation structure; 5.

Connector; 6. First internal ring; 7. Second internal ring; 8. Heat dissipation ring cavity; 9.

Assembly part; 10. Installation part; 11. Keyway; 12. Assembly hole.

Best Mode of Carrying Out the Invention

The utility model will be further described below in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, a transmission shaft gear includes a gear body 1. The gear body 1 is provided with an axially protruding connecting sleeve 2, and a coaxial line is opened at the center of the connecting sleeve 2 and the gear body 1. A shaft hole 3 is opened for the transmission shaft to pass through. A heat dissipation structure 4 is provided on the inner surface of the connecting sleeve 2 and the gear body 1. A keyway 11 is provided on the connecting sleeve 2 and a keyway 11 is provided to cooperate with the keyway 11 for lifting. The gear body 1 is connected to a stable connecting piece 5.

In this embodiment, the outer surface of the gear body 1 is provided with a ring gear for transmission, and the inner surface of the gear is provided with a shaft hole 3 for the transmission shaft to pass through. The gear body 1 uses a connecting sleeve 2 to improve the stability of the connection. , at the same time, the heat dissipation structure 4 is used between the connecting sleeve 2, the gear body 1 and the transmission shaft to improve the heat dissipation. The connector 5 is used to connect the connecting sleeve 2 and the transmission key after the transmission key is inserted into the keyway 11.

In this embodiment, the heat dissipation structure 4 includes a first inscribed ring 6 disposed on the inner surface of the connecting sleeve 2 and a second inscribed ring 7 disposed on the inner surface of the gear body 1. The first inscribed ring 7 A heat dissipation ring cavity 8 is formed between 6 and the second inscribed ring 7 . The connecting sleeve 2 and the gear body 1 only contact the transmission shaft through the first internal ring 6 and the second internal ring 7, thereby reducing the contact area between the gear and the transmission shaft.

In this embodiment, the second inscribed ring 7 is disposed on the end of the gear body 1 away from the connecting platform, and the side surface of the second inscribed ring 7 is flush with the side surface of the gear body 1 .

In this embodiment, the first inscribed ring 6 is disposed on the end of the connecting sleeve 2 away from the gear body 1 and the side surface of the first inscribed ring 6 is flush with the side surface of the connecting sleeve 2. The keyway 11 is opened on the first internal ring 6 .

In this embodiment, the keyway 11 is transversely opened on the upper first internal ring 6 , and the inner end of the keyway 11 transversely penetrates the first internal ring 6 and communicates with the inside of the heat dissipation ring cavity 8 .

In this embodiment, the connecting piece 5 and the keyway 11 are arranged on the same vertical plane.

In this embodiment, the connector 5 includes an assembly part 9 and an installation part 10. The assembly part 9 is provided at the lower end of the installation part 10. The connection sleeve 2 is provided with an assembly hole 12 for the assembly part 9 to pass through. In order to facilitate connection. In order to maintain the stability of the connection, the mounting part 9 and the mounting hole 12 are fixed by threaded connection, and the connecting member 5 can be a bolt. The assembly part 9 of the connecting piece 5 can be penetrated downward into the heat dissipation ring cavity 8 by thread rotation. When there is a transmission key in the keyway 11 and a screw hole is provided on the transmission key, the assembly part 9 can penetrate into the transmission key. In the screw hole of the key, the connecting sleeve 2 and the transmission key are fixed. When there is no screw hole on the transmission key, the connecting piece 5 can move downward to abut against the transmission key to maintain the stable contact between the connecting sleeve 2 and the transmission key. . In order to ensure the overall working strength of the gear, the connecting sleeve 2 and the gear body 1 are integrally formed.

The working principle of the utility model is: the outer surface of the gear body 1 is provided with a ring gear for transmission, the inner surface of the gear is provided with a shaft hole 3 for the transmission shaft to pass through, and the gear body 1 is connected through a connecting sleeve 2 Stability, at the same time, the heat dissipation structure 4 is used between the connecting sleeve 2, the gear body 1 and the transmission shaft to improve the heat dissipation. The connector 5 is used to connect the connecting sleeve 2 and the transmission key after the transmission key is inserted into the keyway 11.

Specifically, the connecting sleeve 2 and the gear body 1 only contact the transmission shaft through the first inscribed ring 6 and the second inscribed ring 7 to reduce the contact area between the gear and the transmission shaft. The assembly part 9 of the connecting piece 5 is threaded It can be rotated and penetrated downward into the heat dissipation ring cavity 8. When there is a transmission key in the keyway 11 and a screw hole is provided on the transmission key, the assembly part 9 can penetrate into the screw hole of the transmission key to fix the connecting sleeve 2 When the transmission key is not provided with a screw hole, the connecting piece 5 can move downward to contact the transmission key to maintain stable contact between the connecting sleeve 2 and the transmission key.

The specific embodiments described herein are merely illustrations of the spirit of the present invention. Those skilled in the technical field to which this utility model belongs can make various modifications or additions to the described specific embodiments or adopt similar replacement methods, but this will not deviate from the spirit of the utility model or exceed the appended claims. defined range.

Although this article mostly uses the gear body 1, the connecting sleeve 2, the shaft hole 3, the heat dissipation structure 4, the connecting piece 5, the first internal ring 6, the second internal ring 7, the heat dissipation ring cavity 8, and the assembly part 9 , mounting portion 10 , keyway 11 , assembly hole 12 and other terms, but the possibility of using other terms is not excluded. The use of these terms is only for the purpose of describing and explaining the essence of the present invention more conveniently. Interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

A transmission shaft gear, including a gear body (1), characterized in that an axially protruding connecting sleeve (2) is provided on the gear body (1), and the connecting sleeve (2) and the gear body There is a coaxial shaft hole (3) at the center of (1) for the transmission shaft to pass through, and a heat dissipation structure (4) is provided on the inner surface of the connecting sleeve (2) and the gear body (1). ), the connecting sleeve (2) is provided with a keyway (11) and a connecting piece (5) that cooperates with the keyway (11) for stable connection of the lifting gear body (1).
The transmission shaft gear according to claim 1, characterized in that the heat dissipation structure (4) includes a first inscribed ring (6) provided on the inner surface of the connecting sleeve (2) and a first inscribed ring (6) provided on the gear body ( 1) A second inscribed ring (7) on the inner surface. A heat dissipation ring cavity (8) is formed between the first inscribed ring (6) and the second inscribed ring (7).
The transmission shaft gear according to claim 2, characterized in that the second inscribed ring (7) is disposed on the end of the gear body (1) away from the connecting platform and the second inscribed ring The side surface of (7) is flush with the side surface of the gear body (1).
The transmission shaft gear according to claim 2, characterized in that the first inscribed ring (6) is disposed on the end of the connecting sleeve (2) away from the gear body (1) and the first inscribed ring The side surface of (6) is flush with the side surface of the connecting sleeve (2), and the keyway (11) is opened on the first internal ring (6).
The transmission shaft gear according to claim 2, characterized in that the keyway (11) is transversely opened on the upper first inner ring (6), and the inner end of the keyway (11) transversely penetrates the first inner ring (6). The connecting ring (6) is internally connected with the heat dissipation ring cavity (8).
The transmission shaft gear according to claim 1, characterized in that the connecting piece (5) and the keyway (11) are arranged on the same vertical plane.
The transmission shaft gear according to claim 1, characterized in that the connecting piece (5) includes an assembly part (9) and a mounting part (10), and the assembly part (9) is provided on the mounting part (10). ), the connecting sleeve (2) is provided with an assembly hole (12) for the assembly portion (9) to pass through.
The transmission shaft gear according to claim 7, characterized in that the assembly part (9) and the assembly hole (12) are fixed by threads.
The transmission shaft gear according to claim 1, characterized in that the connecting sleeve (2) and the gear body (1) are integrally formed.