CN212803972U

CN212803972U - Transmission assembly

Info

Publication number: CN212803972U
Application number: CN202021538403.9U
Authority: CN
Inventors: 常方坡; 刘海林; 袁正; 王志龙; 仇静
Original assignee: Anhui Heli Co Ltd
Current assignee: Anhui Heli Co Ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-03-26
Anticipated expiration: 2030-07-28

Abstract

The utility model discloses a transmission assembly, which comprises a half shaft and a connecting end, wherein a first limiting piece is formed on the shaft surface of the connecting end; the sun wheel is provided with a gear body and a connecting body which is formed on the gear body and is coaxially arranged with the gear body, and a second limiting piece is formed on the axial surface of the connecting body; the sleeve body is sleeved on the connecting end and the connecting body and is respectively connected with the first limiting part and the second limiting part in a limited manner, and the sleeve body limits the relative rotation of the connecting end and the connecting body by the first limiting part and the second limiting part; the connecting end of the half shaft and the connecting body of the sun gear are coaxially arranged and detachably connected. The utility model discloses a split type structure of semi-axis and sun gear to can dismantle the mode of connection through the adoption and implement both fixed, make it all replaceable after arbitrary one end damages, the effectual cost of maintenance that has reduced.

Description

Transmission assembly

Technical Field

The utility model relates to an axis body transmission technical field specifically is a transmission assembly.

Background

At present, two structures of a half shaft and a sun gear used by an engineering machinery axle are provided, wherein one structure is that the half shaft and the sun gear are integrated, and the other structure is that the half shaft and the sun gear are connected through a spline;

the structure of a half shaft and sun gear integrated type:

1: one end of the half shaft is a spline, the other end of the half shaft is a size, the sizes of the two ends of the half shaft are greatly different, and a general half shaft is made of bar materials, so that the problem of large machining allowance exists;

2: the half shaft is generally longer, and the stroke of equipment for machining the gear is generally limited;

3: after any end of the spline or the gear is damaged, the integral spline or the gear needs to be replaced, and the maintenance cost is high.

II, a structure that the half shaft and the sun gear are connected through a spline:

1: the axial displacement limit of the sun gear is limited by a shaft snap ring and a retainer ring to move left and right, so that the shaft snap ring is easy to separate or the shaft axially moves after the shaft snap ring is worn, and the limit is unreliable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a transmission assembly to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a transmission assembly comprises a half shaft and a transmission assembly, wherein the half shaft is provided with a connecting end, and a first limiting piece is formed on the shaft surface of the connecting end; the sun wheel is provided with a gear body and a connecting body which is formed on the gear body and is coaxially arranged with the gear body, and a second limiting piece is formed on the axial surface of the connecting body; the sleeve body is sleeved on the connecting end and the connecting body and is respectively connected with the first limiting part and the second limiting part in a limited manner, and the sleeve body limits the relative rotation of the connecting end and the connecting body by the first limiting part and the second limiting part; the connecting end of the half shaft and the connecting body of the sun gear are coaxially arranged and detachably connected.

The sleeve body is of a cylindrical structure and is coaxially arranged with the half shaft and the sun gear.

The first limiting part is a first spline which is circumferentially arranged along the shaft surface of the connecting end and axially arranged, the second limiting part is a second spline which is circumferentially arranged along the shaft surface of the connecting piece and axially arranged, and an internal spline which is matched with the first spline and the second spline is formed on the sleeve body.

The sun gear is of a stepped shaft structure, the diameter of the connecting body is smaller than that of the gear body, and the sleeve body is sleeved on the connecting body and the connecting end in an axial limited mode.

The connecting end is characterized in that a threaded hole is axially formed in the center of the end face of the connecting end, an assembling hole penetrating through the axial thickness of the sun gear is formed in the middle shaft of the sun gear, an axially limited locking accessory is assembled in the assembling hole, and the locking accessory extends out of one end of the outer side of the sun gear and is in threaded connection with the threaded hole.

After the locking accessory is connected with the sun wheel and the half shaft, the end face of one end of the locking accessory is formed on the inner side of the end face of the sun wheel.

According to the above technical scheme, the utility model discloses a split type structure of semi-axis and sun gear to can dismantle the mode of connection through the adoption and implement both fixed, make it all replaceable after arbitrary one end damages, the effectual cost of maintenance that has reduced, concrete beneficial effect as follows:

1: the positioning is implemented in a detachable connection mode, so that the axial movement of the half shaft is prevented, damaged parts are easy to replace, and the maintenance cost is reduced;

2: adopt the locating part that sets up on link and the connector to the use of the cooperation cover body has effectually restricted the relative rotation of semi-axis and sun gear, has further promoted the stability of structure.

Drawings

FIG. 1 is a sectional view of an assembly of a half shaft and a sun gear of the present invention;

FIG. 2 is a side sectional view of the half axle structure of the present invention;

fig. 3 is a side sectional view of the sun gear structure of the present invention.

In the figure: 1 half shaft, 11 threaded holes, 12 spline I, 2 sun gear, 21 gear body, 22 connecting body, 221 spline II, 23 assembly hole, 231 through hole, 232 counter bore, 3 sleeve body and 4 lock accessories.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

Referring to fig. 1, fig. 1 is a sectional view of an assembly of a half shaft and a sun gear according to an embodiment of the present invention. According to the utility model discloses a transmission assembly of embodiment, this transmission assembly contains half axle 1, half axle 1 has the link; the sun gear 2, the sun gear 2 has the gear body 21 and forms on this gear body 21 and the connector 22 of arranging coaxially with it, wherein, the link of semi-axis 1 with the connector 22 of sun gear 2 arranges coaxially and can dismantle the connection, and has cup jointed a cover body 3 on link and connector, and this cover body 3 restriction the relative rotation of link and connector 22. Here, those skilled in the art can understand that the transmission assembly is divided into three major components, namely, the half shaft 1, the sun gear 2 and the sleeve body 3, through a split structural design, and the half shaft 1 and the sun gear 2 are coaxially and detachably connected, so that the split structure is arranged, and the axial fixation is realized; in order to prevent the sun gear 2 and the half shaft 1 from rotating relatively after being axially fixed, a sleeve body 3 is sleeved on a connecting body of the connecting end of the half shaft 1 and the sun gear 2, and the sleeve body 3 is coaxially arranged with the half shaft 1 and the sun gear 2 and used for limiting the relative rotation of the half shaft 1 and the sun gear 2.

Referring to fig. 2, fig. 2 is a structural cross-sectional view of a half shaft 1, as shown in the figure, a right side end of a position where the half shaft 1 is located in the figure is a connecting end, a first spline 12 is machined on a shaft surface of the connecting end, the first spline 12 is a first limiting member, the first spline 12 is circumferentially arranged and axially arranged on the shaft surface of the connecting end, the first spline 12 is used for being matched and connected with a sleeve body 3, a threaded hole 11 is formed in an end surface of the connecting end, and the threaded hole 11 is located at a center point of the end surface and axially formed.

Referring to fig. 3, fig. 3 is a structural side sectional view of a sun gear 2, as shown in the figure, a right side end of a position where the sun gear 2 is located in the figure is a gear body 21, a left side end of the position is a connecting body 22 coaxially formed with the gear body 21, a second spline 221 is machined on the connecting body 22, the second spline 221 is a second limiting member, the second spline 221 is circumferentially arranged and axially arranged on an axial surface of the connecting body 22, the second spline 22 is used for being fittingly connected with a sleeve body 3, an assembling hole 23 penetrating through an axial thickness of the central shaft of the sun gear 2 is formed in a central axis of the sun gear 2, an axially limited locking accessory 4 is assembled in the assembling hole 23, and in practice, the locking accessory 4 extends out to a left side end of the sun gear 2 in the figure and is threadedly connected in a threaded hole 11, so as to axially fix the half shaft 1 and the sun gear 2. Here, the locking attachment 4 described in the present embodiment may be a bolt but is not limited thereto, and it will be understood by those skilled in the art that in performing the fixing, the connection is performed using a bolt whose end is formed with an external thread adapted to be connected in the threaded hole 11. In order to ensure that the bolt does not generate structural interference after being assembled, the assembly hole 23 is composed of a through hole 231 and a counter bore 232 which are coaxially arranged, and the depth of the counter bore 232 is larger than that of the end head part of the bolt, so that the end head part of the bolt can be hidden inside the end surface of the sun wheel 2 after the bolt is connected with the sun wheel 2 and the half shaft 1.

In this embodiment, the sleeve body 3 is configured as a cylindrical structure, and the inner wall of the sleeve body is formed with an internal spline that is adapted to the first spline 12 and the second spline 221, so that the rotation of the connecting end of the half shaft 1 and the connecting body 22 of the sun gear 2 is limited by being sleeved on the connecting end of the half shaft 1 and the connecting body, and the relative rotation of the half shaft 1 and the sun gear 2 is effectively prevented. It should be noted that, in order to facilitate the processing of the half shaft 1, the sun gear 2 and the sleeve body 3, in practice, the connecting end and the connecting body 22 are provided with shaft body structures with the same diameter and size, and the processed first spline 12 and the processed second spline 221 also have tooth-shaped structures with the same size and number.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims

1. A drive assembly, comprising:

the half shaft is provided with a connecting end, and a first limiting piece is formed on the shaft surface of the connecting end;

the sun wheel is provided with a gear body and a connecting body which is formed on the gear body and is coaxially arranged with the gear body, and a second limiting piece is formed on the axial surface of the connecting body;

the sleeve body is sleeved on the connecting end and the connecting body and is respectively connected with the first limiting part and the second limiting part in a limited manner, and the sleeve body limits the relative rotation of the connecting end and the connecting body by the first limiting part and the second limiting part;

the connecting end of the half shaft and the connecting body of the sun gear are coaxially arranged and detachably connected.

2. A drive assembly as claimed in claim 1, wherein: the sleeve body is of a cylindrical structure and is coaxially arranged with the half shaft and the sun gear.

3. A drive assembly as claimed in claim 1, wherein: the first limiting part is a first spline which is circumferentially arranged along the shaft surface of the connecting end and axially arranged, the second limiting part is a second spline which is circumferentially arranged along the shaft surface of the connecting piece and axially arranged, and an internal spline which is matched with the first spline and the second spline is formed on the sleeve body.

4. A drive assembly as claimed in claim 1, wherein: the sun gear is of a stepped shaft structure, the diameter of the connecting body is smaller than that of the gear body, and the sleeve body is sleeved on the connecting body and the connecting end in an axial limited mode.

5. A drive assembly as claimed in claim 1, wherein: the connecting end is characterized in that a threaded hole is axially formed in the center of the end face of the connecting end, an assembling hole penetrating through the axial thickness of the sun gear is formed in the middle shaft of the sun gear, an axially limited locking accessory is assembled in the assembling hole, and the locking accessory extends out of one end of the outer side of the sun gear and is in threaded connection with the threaded hole.

6. A drive assembly as claimed in claim 5, wherein: after the locking accessory is connected with the sun wheel and the half shaft, the end face of one end of the locking accessory is formed on the inner side of the end face of the sun wheel.