CN219513907U

CN219513907U - Integrated transmission device

Info

Publication number: CN219513907U
Application number: CN202223236350.7U
Authority: CN
Inventors: 余新伟; 张倩; 糜正
Original assignee: Magna PT Powertrain Jiangxi Co Ltd
Current assignee: Magna PT Powertrain Jiangxi Co Ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-08-11
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses an integrated transmission device, which relates to the technical field of mechanical assembly, and comprises a motor and a mechanical pump, wherein the motor comprises a shell, the mechanical pump comprises a rotor component and a cover body, a cavity for accommodating the rotor component is arranged in the shell, the rotor component is detachably connected in the cavity of the shell through the cover body, the rotor component and the cover body of the original mechanical pump are integrated with the shell, the rotor component of the mechanical pump is directly arranged in the cavity of the shell, and the cover body of the mechanical pump is directly connected with the shell of the motor, so that the coaxiality precision of the mechanical pump and an output shaft of the motor is greatly improved, and the control precision and stability of a hydraulic system are improved.

Description

Integrated transmission device

Technical Field

The utility model relates to the technical field of mechanical assembly, in particular to an integrated transmission device.

Background

The motor drives the mechanical pump to be used as a hydraulic scheme with simple principle and compact structure, and is widely applied to industrial production and daily life.

The existing combination mode of the mechanical pump and the motor needs to adopt a shell as a carrier, and the mechanical pump and the motor are respectively arranged on the shell through bolts so as to realize transmission connection between the motor and the mechanical pump.

However, coaxiality of a rotor central shaft of the mechanical pump and a motor shaft is a key for ensuring hydraulic control precision and stability, but the existing installation mode is affected by the precision of two assemblies of the mechanical pump and the motor with a shell respectively, so that the precision is extremely difficult to ensure, and hydraulic fluctuation, insufficient precision and NVH problems are often caused.

Disclosure of Invention

Based on this, the present utility model aims to provide an integrated transmission device, so as to solve the problem that the existing installation mode in the background technology is difficult to ensure the assembly precision between a mechanical pump and a motor.

An aspect of the present utility model provides an integrated transmission device, the device including an electric motor and a mechanical pump, the electric motor including a housing, the mechanical pump including a rotor assembly and a cover, the housing having a cavity therein for accommodating the rotor assembly, the rotor assembly being detachably connected to the housing in the cavity through the cover;

the rotor assembly comprises a first rotor, when the rotor assembly is positioned in the cavity, the first rotor in the rotor assembly is in transmission connection with an output shaft of the motor, a first through hole is formed in the first rotor and used for accommodating one end, close to the first through hole, of the output shaft, so that the output shaft drives the first rotor to rotate when rotating.

Further, the integrated transmission device comprises a connecting assembly for connecting the cover body with the housing.

Further, the connecting assembly comprises a connecting piece, one of the cover body and the shell is detachably connected with the connecting piece, and the other is provided with a mounting hole matched with the connecting piece.

Further, the rotor assembly further comprises a second rotor, and a rotating part matched with the periphery of the first rotor is arranged inside the second rotor;

when the first rotor is positioned in the second rotor, the rotation part is used for enabling the rotation of the first rotor to drive the second rotor to rotate.

Further, the rotor assembly further comprises a rotor shaft sleeve, and the rotor shaft sleeve is sleeved on the outer side of the second rotor.

Further, a second through hole communicated with the first through hole is further formed in the first rotor;

the output shaft comprises a circular part and a special-shaped part connected with the circular part, when the first rotor is in transmission connection with the output shaft, the circular part is positioned in the second through hole, and the special-shaped part is positioned in the first through hole.

Further, the thickness of the first rotor, the thickness of the second rotor and the thickness of the rotor shaft sleeve are all the same;

the thickness of the first rotor, the thickness of the second rotor and the thickness of the rotor shaft sleeve are smaller than the depth of the cavity.

Further, an oil inlet and an oil outlet are formed in one side of the cover body, and a first boss part and a second boss part arranged on the first boss part are arranged on the other side of the cover body;

the first boss piece is provided with an oil inlet communicated with the oil inlet, and the second boss piece is provided with an oil outlet communicated with the oil outlet.

Further, the integrated transmission device further comprises a first sealing ring and a second sealing ring, wherein the first sealing ring is arranged on the first boss, and the second sealing ring is arranged on the second boss.

The beneficial effects of the utility model are as follows:

compared with the connection mode of a mechanical pump and a motor in the prior art, the transmission tool provided by the utility model has the advantages that the rotor component and the cover body of the original mechanical pump are integrated with the shell of the motor, the rotor component of the mechanical pump is directly arranged in the cavity of the shell, the cover body of the mechanical pump is directly connected with the shell of the motor, the coaxiality precision of the mechanical pump and the output shaft of the motor is greatly improved, and therefore, the control precision and the stability of a hydraulic system are improved.

Drawings

FIG. 1 is a schematic diagram of an overall structure according to an embodiment of the present utility model;

FIG. 2 is an exploded view of an overall structure according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a cover according to an embodiment of the utility model;

FIG. 4 is a rear view of a cover according to an embodiment of the utility model;

fig. 5 is a schematic structural view of a first rotor according to an embodiment of the utility model.

In the figure: 100. a motor; 110. a housing; 120. an output shaft; 121. a circular portion; 122. a special-shaped part; 200. a mechanical pump; 210. a rotor assembly; 211. a first rotor; 211a, a first through hole; 211b, a second through hole; 212. a second rotor; 213. a rotating part; 214. a rotor sleeve; 220. a cover body; 300. a cavity; 400. a connection assembly; 410. a connecting piece; 420. a mounting hole; 500. an oil inlet hole; 600. an oil outlet hole; 700. a first boss member; 710. a second boss member; 720. an oil inlet; 730. an oil outlet; 800. a first seal ring; 900. and a second sealing ring.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Several embodiments of the utility model are presented in the figures. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-5, an integrated transmission device according to an embodiment of the utility model is shown, the device comprising an electric motor 100 and a mechanical pump 200.

The motor 100 comprises a housing 110, the mechanical pump 200 comprises a rotor assembly 210 and a cover 220, a cavity 300 for accommodating the rotor assembly 210 is arranged in the housing 110, the rotor assembly 210 is detachably connected in the housing 110 through the cover 220, the rotor assembly 210 comprises a first rotor 211, when the rotor assembly 210 is positioned in the cavity 300, the first rotor 211 in the rotor assembly 210 is in transmission connection with an output shaft 120 of the motor 100, a first through hole 211a is formed in the first rotor 211, and the first through hole 211a is used for accommodating one end, close to the first through hole 211a, of the output shaft 120, so that the first rotor 211 is driven to rotate when the output shaft 120 rotates. In the utility model, the rotor assembly 210 and the cover 220 of the original mechanical pump 200 are integrated with the shell 110, the rotor assembly 210 of the mechanical pump 200 is directly arranged in the cavity 300 of the shell 110, and the cover 220 of the mechanical pump 200 is directly connected with the shell 110 of the motor 100, so that the coaxiality precision of the mechanical pump 200 and the output shaft 120 of the motor 100 is greatly improved, and the control precision and stability of a hydraulic system are improved.

Specifically, the output shaft 120 includes a circular portion 121, and a shaped portion 122 connected to the circular portion 121, and the first rotor 211 is further provided with a second through hole 211b communicating with the first through hole 211 a; when the first rotor 211 is in driving connection with the output shaft 120, the circular portion 121 is located in the second through hole 211b, the shaped portion 122 is located in the first through hole 211a, and the example is not limited, and in some practical processes, the main body of the output shaft 120 is cylindrical, and the end is Fang Jian, that is, the circular portion 121 and the shaped portion 122 in this embodiment; correspondingly, the first through hole 211a is an inner square key hole, the second through hole 211b is a central circular hole, and the special shape of the hole is utilized to drive the first rotor 211 to rotate when the output shaft 120 of the motor 100 rotates.

Further, the rotor assembly 210 further includes a second rotor 212 and a rotor bushing 214, wherein the second rotor 212 is sleeved outside the first rotor 211; the rotor shaft sleeve 214 is sleeved on the outer side of the second rotor 212, that is, the diameter of the outer circle of the second rotor 212 is slightly smaller than the inner diameter of the rotor shaft sleeve 214, and the outer diameter of the rotor shaft sleeve 214 is slightly smaller than the inner diameter of the shell 110, so that the rotor shaft sleeve 214, the second rotor 212 and the first rotor 211 are sequentially arranged from large to small, the rotor shaft sleeve 214 is arranged in the cavity 300 and covers the second rotor 212, and the second rotor 212 is arranged in the cavity 300 and covers the first rotor 211; the thickness of the first rotor 211, the thickness of the second rotor 212, and the thickness of the rotor sleeve 214 are all the same, and the thickness of the first rotor 211, the thickness of the second rotor 212, and the thickness of the rotor sleeve 214 are all smaller than the depth of the cavity 300, and in some practical processes, the end surfaces of the second rotor 212 and the rotor sleeve 214 are attached to the end surface of the housing 110.

Wherein, in order to realize the rotation of the first rotor 211 and drive the second rotor 212 to rotate, a rotation part 213 which is matched with the periphery of the first rotor 211 is arranged in the second rotor 212; when the first rotor 211 is located inside the second rotor 212, the rotation of the first rotor 211 drives the second rotor 212 to rotate through the rotation part 213, in some embodiments, the rotation part 213 may be an internal gear disposed on the second rotor 212, and an external gear matched with the internal gear is disposed on the periphery of the first rotor 211, and the number of teeth of the internal gear is no common divisor with the number of teeth of the external gear.

In addition, the integrated transmission device comprises a connection assembly 400 for connecting the cover 220 with the housing 110, specifically, the connection assembly 400 comprises a connection member 410, wherein one of the cover 220 and the housing 110 is detachably connected with the connection member 410, and the other is provided with a mounting hole 420 matched with the connection member 410, in practical cases, the connection member 410 may be a bolt, and the mounting hole 420 may be a screw hole matched with the bolt; correspondingly, the connecting piece 410 may be disposed on the cover 220, and hole sites through which bolts pass are also disposed on the cover 220.

Further, one side of the cover 220 is provided with an oil inlet hole 500 and an oil outlet hole 600. The other side is provided with a first boss 700 and a second boss 710 arranged above the first boss 700; the first boss 700 is provided with an oil inlet 720 communicated with the oil inlet 500, and the second boss 710 is provided with an oil outlet 730 communicated with the oil outlet 600.

In some practical cases, the oil inlet 500 and the oil outlet 600 are non-standard kidney-shaped oil holes provided on the cover 220, and the center positions of the two oil holes are located between the top circle and the root circle of the internal gear of the second rotor 212, the volume of the oil inlet 500 is changed from small to large in anticlockwise direction, the volume of the non-standard kidney-shaped oil outlet 600 is changed from small in anticlockwise direction, and a circular blind hole is provided at the center position of the cover 220 for avoiding the output shaft 120 of the motor 100.

The integrated transmission device further comprises a first sealing ring 800 and a second sealing ring 900, wherein the first sealing ring 800 is arranged on the first boss 700, and the second sealing ring 900 is arranged on the second boss 710.

In some practical cases, the first boss 700 has a large cylindrical structure, the second boss 710 has a small cylindrical structure, the first seal ring 800 is mounted on the cylindrical surface ring groove of the first boss 700 to form a sealed oil inlet space with the oil inlet application cavity 300, and the second seal ring 900 is mounted on the cylindrical surface ring groove of the second boss 710 to form a sealed oil outlet space with the oil outlet application cavity 300.

To sum up, compared with the installation modes of the motor 100 and the mechanical pump 200 in the prior art, the integrated transmission device in the first embodiment has at least the following advantages:

compared with the prior art, the transmission tool provided by the utility model integrates the rotor assembly 210 and the cover 220 of the original mechanical pump 200 with the housing 110 of the motor 100, the rotor assembly 210 of the mechanical pump 200 is directly arranged in the cavity 300 of the housing 110, the cover 220 of the mechanical pump 200 is directly connected with the housing 110 of the motor 100, the coaxiality precision of the mechanical pump 200 and the output shaft 120 of the motor 100 is greatly improved, and therefore the control precision and the stability of a hydraulic system are improved.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. An integrated transmission, the device comprising an electric motor and a mechanical pump, characterized in that:

the motor comprises a shell, the mechanical pump comprises a rotor assembly and a cover body, a cavity for accommodating the rotor assembly is arranged in the shell, and the rotor assembly is detachably connected in the cavity of the shell through the cover body;

2. The integrated transmission of claim 1, wherein: the integrated transmission device further comprises a connecting component used for connecting the cover body with the shell.

3. The integrated transmission of claim 2, wherein: the connecting assembly comprises a connecting piece, one of the cover body and the shell is detachably connected with the connecting piece, and the other one of the cover body and the shell is provided with a mounting hole matched with the connecting piece.

4. The integrated transmission of claim 1, wherein: the rotor assembly further comprises a second rotor, and a rotating part matched with the periphery of the first rotor is arranged in the second rotor;

5. The integrated transmission of claim 4, wherein: the rotor assembly further comprises a rotor shaft sleeve, and the rotor shaft sleeve is sleeved on the outer side of the second rotor.

6. The integrated transmission of claim 5, wherein: the first rotor is also provided with a second through hole communicated with the first through hole;

7. The integrated transmission of claim 6, wherein: the thickness of the first rotor, the thickness of the second rotor and the thickness of the rotor shaft sleeve are all the same;

8. The integrated transmission of claim 1, wherein: an oil inlet and an oil outlet are formed in one side of the cover body, and a first boss part and a second boss part arranged on the first boss part are arranged on the other side of the cover body;

9. The integrated transmission of claim 8, wherein: the integrated transmission device further comprises a first sealing ring and a second sealing ring, wherein the first sealing ring is arranged on the first boss, and the second sealing ring is arranged on the second boss.