CN217294648U

CN217294648U - Integrated electric pump

Info

Publication number: CN217294648U
Application number: CN202221286044.1U
Authority: CN
Inventors: 孟铁
Original assignee: Hebei Sitai Jiaye New Energy Vehicle Parts Co ltd
Current assignee: Hebei Sitai Jiaye New Energy Vehicle Parts Co ltd
Priority date: 2022-03-16
Filing date: 2022-05-25
Publication date: 2022-08-26
Anticipated expiration: 2032-05-25

Abstract

The utility model discloses an integral type electric pump, including integral type motor pump casing, integral type motor pump shaft, motor workpiece, pump workpiece, motor end cover, pump end cover and bearing, it holds the chamber and the chamber is held to have motor workpiece in the integral type motor pump casing, motor workpiece holds the chamber and the chamber one end intercommunication that chamber and pump workpiece held the chamber and is close to each other, integral type motor pump shaft is installed in integral type motor pump casing, motor workpiece includes stator and rotor, the stator is installed on the inner wall that motor workpiece held the chamber, the rotor is installed on integral type motor pump shaft is located the part that motor workpiece held the intracavity, and the rotor is located the stator, pump workpiece installs on the part that integral type motor pump shaft is located pump workpiece and holds the intracavity. The utility model provides a volume that current electro-hydraulic steering booster pump exists and the problem that weight is big, vibration and noise are big and the shaft coupling wearing and tearing.

Description

Integrated electric pump

Technical Field

The utility model belongs to the technical field of the electric pump.

Background

As shown in fig. 1, a conventional electric-hydraulic steering assist pump is formed by connecting a hydraulic oil pump 01 to a motor 03 through an oil pump bracket 02, and a power input shaft of the hydraulic oil pump 01 and a power output shaft of the motor 03 are connected through a coupling 04. The electric hydraulic steering power-assisted pump has the problems of large volume and weight, large vibration and noise and wear of a coupling caused by difficult guarantee of coaxiality of a power input shaft of the hydraulic oil pump and a power output shaft of the motor.

SUMMERY OF THE UTILITY MODEL

The problem of big and the shaft coupling wearing and tearing is greatly reached to volume and weight, vibration and noise that exist for solving current electronic hydraulic power steering pump, the utility model provides an integral type electric pump.

For solving the technical problem, the utility model discloses the technical scheme who adopts does:

an integrated electric pump comprises an integrated motor pump casing, an integrated motor pump shaft, a motor working part, a pump working part, a motor end cover, a pump end cover and a bearing, wherein the integrated motor pump casing is internally provided with a motor working part accommodating cavity and a pump working part accommodating cavity, one ends of the motor working part accommodating cavity and the pump working part accommodating cavity, which are far away from each other, are respectively provided with a motor end opening and a pump end opening, one ends of the motor working part accommodating cavity and the pump working part accommodating cavity, which are close to each other, are communicated, a bearing mounting groove is arranged on an opening or/and near the opening, the motor end cover is mounted at the motor end opening, the bearing is arranged at one side of the motor end cover, which faces the motor working part accommodating cavity, the pump end cover is mounted at the pump end opening, the bearing is mounted in the bearing mounting groove, the integrated motor pump shaft is mounted in the integrated motor pump casing, and the one end of integral type motor pump shaft is installed in the bearing on the motor end cover, and the other end of integral type motor pump shaft passes the bearing in the bearing mounting groove that sets up near on the opening or/and opening and stretches into pump workpiece and hold the intracavity, motor workpiece includes stator and rotor, the stator is installed on the inner wall that motor workpiece holds the chamber, the rotor is installed on the part that integral type motor pump shaft is located motor workpiece and holds the intracavity, and the rotor is located the stator, pump workpiece installs on the part that integral type motor pump shaft is located pump workpiece and holds the intracavity, be provided with on the integral type motor pump casing and hold fluid working medium entry and the fluid working medium export of chamber intercommunication with pump workpiece.

Preferably, at least one of the bearings installed in the bearing installation groove is a sealing bearing or a sealing ring installation groove is further formed in the through opening or/and the vicinity of the through opening and is provided with a sealing ring, so that the pump working part accommodating cavity is isolated from the motor working part accommodating cavity.

Preferably, the pump work part includes central rotor and blade, central rotor installs on the part that integral type motor pump shaft is located the pump work part and holds the intracavity, and central rotor is provided with a plurality of blade mounting groove along its circumference, and slidable mounting has the blade in every blade mounting groove, when central rotor rotates, the inner wall developments in close contact with in chamber is held to blade and pump work part.

Preferably, the fluid working medium is hydraulic oil.

Preferably, the bearing arranged on one side of the motor end cover facing the motor working part accommodating cavity is positioned in the center of the motor end cover.

Preferably, the integrated motor pump casing is integrally formed through casting or 3D printing.

The utility model discloses a design mutually independent motor housing and pump case for having the integral type motor pump casing of the two function concurrently, thereby required pump support and fastener have been connected to pump and motor, power output shaft through with mutually independent motor and the power input shaft design formula motor pump shaft of pump as an organic whole, thereby the power input shaft of having saved the pump and the required shaft coupling of power output shaft connection of motor, the volume of the integral type electric pump who finally obtains, weight and cost greatly reduced, it is big to have avoided simultaneously because of vibration and the noise that the power input shaft of pump and the power output shaft's of motor axiality are difficult to guarantee to cause, the problem of shaft coupling wearing and tearing.

Compare with current electric hydraulic steering booster pump, the utility model discloses an integral type electric pump has simple structure, volume and weight are little, with low costs, vibration and noise are little, the little advantage of maintenance work load.

Drawings

Fig. 1 is a schematic structural view of a conventional electro-hydraulic steering power-assisted pump;

fig. 2 is a schematic structural view of an integrated electric pump according to a first embodiment of the present invention;

fig. 3 is a schematic structural view of an integrated electric pump according to a second embodiment of the present invention;

in the figure: 01. a hydraulic oil pump; 02. an oil pump bracket; 03. an electric motor; 04. a coupling; 1. an integrated motor pump housing; 11. a motor working part accommodating cavity; 12. a pump working member accommodating chamber; 13. a fluid working medium inlet; 14. a fluid working medium outlet; 2. an integrated motor pump shaft; 3. a motor end cover; 4. a pump end cap; 5. a bearing; 6. a bearing; 7. a bearing; 8. and (5) sealing rings.

Detailed Description

The following describes the embodiments of the present invention with reference to the drawings.

First embodiment as shown in fig. 2, the integrated electric pump of this embodiment includes an integrated motor pump casing 1, an integrated motor pump shaft 2, a motor working component, a pump working component, a motor end cover 3, a pump end cover 4 and a bearing, a motor working component accommodating chamber 11 and a pump working component accommodating chamber 12 are provided in the integrated motor pump casing 1, one ends of the motor working component accommodating chamber 11 and the pump working component accommodating chamber 12, which are far away from each other, are respectively provided with a motor end opening and a pump end opening, one ends of the motor working component accommodating chamber 11 and the pump working component accommodating chamber 12, which are close to each other, are communicated, bearing mounting grooves are provided on and near the through openings, the motor end cover 3 is mounted at the motor end opening, a bearing 5 is provided at one side of the motor end cover 3 facing the motor working component accommodating chamber 11, the pump end cover 4 is mounted at the pump end opening, a bearing 7 and a bearing 6 are mounted in the bearing mounting grooves, the integrated motor pump shaft 2 is arranged in the integrated motor pump casing 1, one end of the integrated motor pump shaft 2 is arranged in a bearing on the motor end cover 3, the other end of the integrated motor pump shaft 2 passes through a bearing 6 and a bearing 7 in a bearing mounting groove arranged near and on the port and extends into the pump working part accommodating cavity 12, the motor working part comprises a stator and a rotor, the stator is arranged on the inner wall of the motor working part accommodating cavity 11, the rotor is mounted on the portion of the integrated motor pump shaft 2 located in the motor working part accommodating chamber 11, and the rotor is located in the stator, the pump working part is installed on the part of the integrated motor pump shaft 2 located in the pump working part accommodating cavity 12, and the integrated motor pump casing 1 is provided with a fluid working medium inlet 13 and a fluid working medium outlet 14 which are communicated with the pump working part accommodating cavity 12.

For avoiding unsuitable fluid working medium to hold the chamber by the pump working part and flow into motor working part and hold the intracavity, preferably, bearing 7 of installation is sealed bearing in the bearing mounting groove to it is isolated that the chamber is held to the messenger pump working part and motor working part holds the chamber.

Preferably, the pump working part comprises a central rotor and blades, the central rotor is installed on the part, located in the pump working part accommodating cavity 12, of the integrated motor pump shaft 2, the central rotor is provided with a plurality of blade installation grooves along the circumferential direction of the central rotor, each blade installation groove is internally provided with a blade in a sliding manner, and when the central rotor rotates, the blades are in dynamic close contact with the inner wall of the pump working part accommodating cavity 12. The pump working parts described herein are working parts of a vane pump. Obviously, according to the technical solution of the present invention, the pump working part is not limited to the working part of the vane pump, and any pump working part that can be driven by a single shaft and is suitable for a specific application is possible.

Preferably, the fluid working medium is hydraulic oil. The fluid working medium may also be water, air or other fluids depending on the application.

Preferably, the bearing 5 arranged on the side of the motor end cover 3 facing the motor working part accommodating cavity 11 is located in the center of the motor end cover 3.

Preferably, the integrated motor pump casing 1 is integrally formed by casting or 3D printing.

Optionally, the integrated motor pump casing 1 is welded into a whole through a split.

Second embodiment as shown in fig. 3, the integral type electric pump of the present embodiment is different from the first embodiment in that: in this embodiment, the bearing 7 of installation both can be sealed bearing in the bearing mounting groove, also can be non-sealed bearing, still be equipped with the sealing washer mounting groove on the opening and install sealing washer 8 to it is isolated that the chamber is held to make pump working part hold the chamber and motor working part holds the chamber.

The utility model discloses a design mutually independent motor housing and pump case for having the integral type motor pump casing of the two function concurrently, thereby required pump support and fastener have been connected to pump and motor, power output shaft through with mutually independent motor and the power input shaft design formula motor pump shaft as an organic whole of pump, thereby the power input shaft that has saved the pump is connected required shaft coupling with the power output shaft of motor, the volume of the integral type electric pump that finally obtains, weight and cost greatly reduced, it is big to have avoided simultaneously because of vibration and the noise that the power output shaft's of power input shaft of pump and motor axiality is difficult to guarantee to cause, the problem of shaft coupling wearing and tearing.

Obviously, the above embodiments are not the only embodiments of the present invention, and many simple changes can be made without departing from the technical essence thereof, such as: the bearing 6 is a sealed bearing, the bearing 7 can be a sealed bearing or a non-sealed bearing, and the sealing ring 8 can be provided or not, and so on, which are not described herein again.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge scope possessed by those skilled in the art.

Claims

1. An integral electric pump characterized by: the pump comprises an integrated motor pump casing, an integrated motor pump shaft, a motor working part, a pump working part, a motor end cover, a pump end cover and a bearing, wherein the integrated motor pump casing is internally provided with a motor working part accommodating cavity and a pump working part accommodating cavity, one ends of the motor working part accommodating cavity and the pump working part accommodating cavity, which are far away from each other, are respectively provided with a motor end opening and a pump end opening, one ends of the motor working part accommodating cavity and the pump working part accommodating cavity, which are close to each other, are communicated, bearing mounting grooves are arranged on or/and near the through openings, the motor end cover is arranged at the motor end opening, the bearing is arranged at one side of the motor end cover, which faces the motor working part accommodating cavity, the pump end cover is arranged at the pump end opening, the bearing is arranged in the bearing mounting groove, and the integrated motor pump shaft is arranged in the integrated motor pump casing, and the one end of integral type motor pump shaft is installed in the bearing on the motor end cover, and the other end of integral type motor pump shaft passes the bearing in the bearing mounting groove that sets up near on the opening or/and the opening and stretches into pump workpiece and hold the intracavity, motor workpiece includes stator and rotor, the stator is installed on motor workpiece holds the inner wall in chamber, the rotor is installed on the part that integral type motor pump shaft is located motor workpiece and holds the intracavity, and the rotor is located the stator, pump workpiece installs on the part that integral type motor pump shaft is located pump workpiece and holds the intracavity, be provided with on the casing of integral type motor pump and hold fluid working medium entry and the export of fluid working medium that the chamber communicates with pump workpiece.

2. The integrated electric pump of claim 1, wherein: at least one bearing installed in the bearing installation groove is a sealing bearing or a sealing ring installation groove is further arranged on the opening or/and near the opening and is provided with a sealing ring, so that the pump working part containing cavity and the motor working part containing cavity are isolated.

3. The integrated electric pump of claim 1, wherein: the pump working part comprises a central rotor and blades, the central rotor is arranged on the part, located in the containing cavity of the pump working part, of the integrated motor pump shaft, a plurality of blade mounting grooves are formed in the central rotor along the circumferential direction of the central rotor, blades are slidably mounted in each blade mounting groove, and when the central rotor rotates, the blades are in dynamic close contact with the inner wall of the containing cavity of the pump working part.

4. The integrated electric pump of claim 1, wherein: the fluid working medium is hydraulic oil.

5. The integrated electric pump of claim 1, wherein: and the bearing arranged on one side of the motor end cover facing the motor working part accommodating cavity is positioned in the center of the motor end cover.

6. The integrated electric pump of claim 1, wherein: the integrated motor pump casing is integrally formed through casting or 3D printing.