CN216618448U

CN216618448U - Motor structure of hydrostatic continuously variable transmission

Info

Publication number: CN216618448U
Application number: CN202123456892.0U
Authority: CN
Inventors: 王运梅; 陈湘; 曾祥旭; 汤志彬
Original assignee: Heitek Power Co ltd
Current assignee: Heitek Power Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-27
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a motor structure of a hydrostatic stepless speed changer, which comprises a shell, a transmission shaft arranged in the shell, a rotating assembly arranged on the transmission shaft, a base detachably arranged in the shell, and a thrust plate arranged on the base and matched with the rotating assembly; the transmission shaft is linked with the rotating assembly and is used for driving the rotating assembly to rotate; the rotating assembly, the thrust plate and the base are matched and tightly expanded and arranged in the shell, and the rotating assembly is in limited linkage with the transmission shaft through axial key slot splicing and matching; an annular clamping ring is arranged on the inner wall of the rotating assembly, and the transmission shaft coaxially penetrates through the clamping ring; the transmission shaft is sleeved with a spring, one end of the spring is abutted to the snap ring, and the other end of the spring is abutted to the key on the transmission shaft so as to provide elasticity for the rotary assembly to be attached to the shell. The utility model has the characteristic of convenient installation when the active pump body is installed, and can improve the assembly efficiency.

Description

Motor structure of hydrostatic continuously variable transmission

Technical Field

The utility model relates to a plunger pump, in particular to a motor structure of a hydrostatic continuously variable transmission.

Background

The conventional hydrostatic continuously variable transmission has a complex internal structure and is generally difficult to mount during mounting, so that the labor cost is increased due to the difficulty in mounting, and the requirement on the precision of a workpiece is higher.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a motor structure of a hydrostatic stepless transmission, which has the characteristic of convenience in installation when the motor is installed and can improve the assembly efficiency.

In order to achieve the purpose, the utility model provides the following technical scheme: a motor structure of a hydrostatic stepless transmission comprises a shell, a transmission shaft arranged in the shell, a rotating assembly arranged on the transmission shaft, a base detachably arranged in the shell, and a thrust plate arranged on the base and matched with the rotating assembly; the transmission shaft is linked with the rotating assembly and is used for driving the rotating assembly to rotate; the rotating assembly, the thrust plate and the base are matched and arranged in the shell in an expanding mode.

As a further improvement of the utility model, the shell and the base are inserted through a plug pin, one end of the plug pin is inserted into the shell, and the other end of the plug pin is inserted into the base.

As a further improvement of the utility model, the rotating assembly and the transmission shaft are in limited linkage through the insertion fit of an axial key groove.

As a further improvement of the utility model, an annular snap ring is arranged on the inner wall of the rotating assembly, and the transmission shaft coaxially penetrates through the snap ring; the transmission shaft is sleeved with a spring, one end of the spring is abutted to the snap ring, and the other end of the spring is abutted to the key on the transmission shaft so as to provide elasticity for the rotary assembly to be attached to the shell.

As a further improvement of the utility model, a bearing is sleeved on one end of the transmission shaft facing the base.

As a further improvement of the utility model, a step used for embedding the bearing outer ring is arranged on the base at a position corresponding to the bearing.

As a further improvement of the utility model, a gasket is further arranged between the spring and the snap ring, and the spring is abutted against the snap ring through the gasket.

The utility model has the advantages that the expansion installation mode does not need to be connected by means of an additional connecting component, the installation process is simplified, the installation is more convenient, the installation efficiency is improved, and the assembly cost is reduced.

Drawings

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

reference numerals: 1. a housing; 2. a drive shaft; 3. a rotating assembly; 4. a base; 5. a thrust plate; 6. a bolt; 7. a snap ring; 8. a spring; 9. a bearing; 10. a step; 11. and (7) a gasket.

Detailed Description

The utility model will be further described in detail with reference to the following examples, which are given in the accompanying drawings.

As shown with reference to figure 1 of the drawings,

a motor structure of a hydrostatic stepless speed changer comprises a shell 1, a transmission shaft 2 arranged in the shell 1, a rotating assembly 3 arranged on the transmission shaft 2, a base 4 detachably arranged in the shell 1, and a thrust plate 5 arranged on the base 4 and matched with the rotating assembly 3; the transmission shaft 2 is linked with the rotating assembly 3 and is used for driving the rotating assembly 3 to rotate; the rotating assembly 3, the thrust plate 5 and the base 4 are matched and tightly arranged in the shell 1 in an expanding mode. The rotating assembly and the transmission shaft are in plug-in fit and limited linkage through an axial key groove.

Further, an annular clamping ring 7 is arranged on the inner wall of the rotating assembly 3, and the transmission shaft 2 coaxially penetrates through the clamping ring 7; the transmission shaft 2 is sleeved with a spring 8, one end of the spring 8 is abutted to the snap ring 7, and the other end of the spring 8 is abutted to the key on the transmission shaft 2 so as to provide elastic force for attaching the rotary assembly 3 to the shell 1.

Utilize the elasticity cooperation of spring 8, can let rotatory assembly 3 keep the effort with base 4 reverse, make the tight effect of expanding better to help the sealed of oil absorption and oil extraction. The snap ring 7 can support the spring 8 through a simple structure, and is more practical and convenient to install.

Because have a plurality of plungers on the rotatory assembly 3, the plunger can appear the effect of oil absorption and oil extraction when cooperating with thrust plate 5, and hydraulic pressure can counteract the plunger when the oil extraction, and the plunger produces reaction force to thrust plate 5 this moment, can pass through thrust plate 5 through this effort and transmit base 4 for, and base 4 and rotatory assembly 3 further form tight fit of expanding and install in casing 1 this moment.

Although this solution does not require additional connecting elements for connection, it is an optimization solution that the housing 1 and the base 4 are inserted by a plug 6, and one end of the plug 6 is inserted into the housing 1, and the other end is inserted into the base 4.

This bolt 6 need not cooperate the screw thread mode to advance to connect, only need both ends peg graft can, consequently can not increase the complexity of installation. And this bolt 6's effect is used for the location, can avoid the position of base 4 to produce the skew, simple let bolt 6 insert on base 4 or casing 1 earlier, then with base 4 connection on casing 1 can, consequently still keep the simple characteristics of assembly step, do not need bolt etc. to carry out threaded connection, still played the effect of location simultaneously, improved the stability of user state.

In order to stabilize the rotation of the transmission shaft 2, a bearing 9 is sleeved on one end of the transmission shaft 2 facing the base 4.

Utilize bearing 9 to support transmission shaft 2, can improve transmission shaft 2's stability, also can let rotary assembly 3 and spring 8 remain stable operating condition simultaneously.

Furthermore, a step 10 for fitting into the outer ring of the bearing 9 is provided on the base 4 at a position corresponding to the bearing 9. The bearing 9 can be clamped when the base 4 is expanded and installed through the step 10, so that the bearing is in a stable installation state, and the installation is more convenient and the installation efficiency is higher.

In order to make the cooperation of the spring 8 and the snap ring 7 more stable, a gasket 11 is further arranged between the spring 8 and the snap ring 7, and the spring 8 abuts against the snap ring 7 through the gasket 11. When the spring 8 directly offsets with the snap ring 7, because the tip of spring 8 generally can't be in complete smooth face, consequently inhomogeneous problem can appear to the effort of snap ring 7, if directly let spring 8 and snap ring 7 offset, lead to the life-span of snap ring 7 to shorten easily. Buffering dispersion is carried out the effort through gasket 11, can let snap ring 7's atress more even, helps protecting snap ring 7, improves life.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims

1. A motor structure of a hydrostatic stepless speed changer is characterized by comprising a shell, a transmission shaft arranged in the shell, a rotating assembly arranged on the transmission shaft, a base detachably arranged in the shell, and a thrust plate arranged on the base and matched with the rotating assembly; the transmission shaft is linked with the rotating assembly and is used for driving the rotating assembly to rotate; the rotating assembly, the thrust plate and the base are matched and arranged in the shell in an expanding manner; the rotating assembly is in limited linkage with the transmission shaft through the insertion and matching of an axial key groove; an annular clamping ring is arranged on the inner wall of the rotating assembly, and the transmission shaft coaxially penetrates through the clamping ring; the transmission shaft is sleeved with a spring, one end of the spring is abutted to the snap ring, and the other end of the spring is abutted to the key on the transmission shaft so as to provide elasticity for the rotary assembly to be attached to the shell.

2. The motor structure of claim 1, wherein the housing is inserted into the base through a plug, one end of the plug is inserted into the housing, and the other end of the plug is inserted into the base.

3. The motor structure of claim 1, wherein a bearing is sleeved on one end of the transmission shaft facing the base.

4. The motor structure according to claim 3, wherein a step for embedding an outer race of a bearing is provided on the base at a position corresponding to the bearing.

5. The motor structure according to claim 1, wherein a washer is further disposed between the spring and the snap ring, and the spring abuts against the snap ring through the washer.