CN209761839U

CN209761839U - high-efficient steering pump

Info

Publication number: CN209761839U
Application number: CN201920610685.XU
Authority: CN
Inventors: 陈益标; 张卫平; 朱丹青
Original assignee: JIANGXI HYDRAULIC PIECES Ltd
Current assignee: JIANGXI HYDRAULIC PIECES Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2019-12-10
Anticipated expiration: 2029-04-30

Abstract

The utility model provides a high-efficient steering pump, including casing and pivot, the pivot includes first axis body, second axis body, third axis body, fourth axis body and fifth axis body, the diameter of second axis body is greater than the diameter of first axis body, the maximum diameter of third axis body is less than the diameter of second axis body, and the diameter of third axis body reduces towards the direction of keeping away from the second axis body gradually, the diameter of fourth axis body equals with the minimum diameter of third axis body, the diameter of fifth axis body is less than the diameter of fourth axis body; a first mounting cavity, a second mounting cavity and a third mounting cavity are arranged on the shell corresponding to the rotating shaft, a bearing matched with the second shaft body is arranged in the first mounting cavity, and an oil seal is arranged on one side, close to the second mounting cavity, of the bearing; the second mounting cavity is matched with the third shaft body in shape, the inner wall of the second mounting cavity is provided with a plurality of sealing rings, and the sealing rings are in sliding sealing fit with the third shaft body; the multi-stage sealing structure is formed in the rotating shaft and the shell, so that the sealing performance can be effectively improved, and the problems of oil leakage and oil leakage are prevented.

Description

High-efficient steering pump

Technical Field

The utility model relates to a steering pump field, more specifically relates to a high-efficient steering pump.

Background

The power steering pump is used as a power source in an automobile steering system, provides power for the steering system, reduces the operating force of a driver, and directly influences the operating comfort and safety of the driver due to the performance of the power steering pump. The power steering pump used in the present automobile steering system mainly comprises a shell, a rotating shaft, a bearing, a shaft seal, a rotating blade, a pressure plate and the like, wherein the bearing, the shaft seal and the rotating blade are all assembled on the rotating shaft, the bearing and an oil seal are abraded by a large amount when the rotating pump runs at a high speed, most of the existing steering pumps only adopt a common oil seal as a sealing element, and the problems of oil leakage and oil leakage are easy to occur after long-time work, so that the existing steering pumps still have larger lifting space on the sealing structure.

SUMMERY OF THE UTILITY MODEL

For overcoming the defects of the prior art, the utility model aims to solve the technical problem that a high-efficient steering pump is proposed, its novel structure through the inside multistage seal structure that forms of pivot and casing, can effectively promote sealing performance, prevents to take place oil impregnate, oil leak problem.

To achieve the purpose, the utility model adopts the following technical proposal:

The utility model provides a high-efficiency steering pump, which comprises a shell and a cavity arranged on one side of the shell, wherein a shell cover is arranged on the outer side of the cavity, the shell cover is fixedly connected with the shell through screws, and a high-pressure oil channel, an overflow port and an oil outlet which are communicated with the cavity are arranged in the shell; a rotating vane and a bearing plate are arranged in the cavity, the outer wall of the bearing plate is matched with the inner wall of the cavity, and the bearing plate is positioned on one side of the rotating vane, which is far away from the shell cover; a rotating shaft penetrates through the shell through a bearing, the rotating shaft comprises a first shaft body, a second shaft body, a third shaft body, a fourth shaft body and a fifth shaft body which are sequentially connected, the diameter of the second shaft body is larger than that of the first shaft body, the maximum diameter of the third shaft body is smaller than that of the second shaft body, the diameter of the third shaft body is gradually reduced towards the direction far away from the second shaft body, the diameter of the fourth shaft body is equal to that of the third shaft body, and the diameter of the fifth shaft body is smaller than that of the fourth shaft body; a first mounting cavity, a second mounting cavity and a third mounting cavity are sequentially formed in the shell corresponding to the rotating shaft, a bearing matched with the second shaft body is mounted in the first mounting cavity, and an oil seal is arranged on one side, close to the second mounting cavity, of the bearing; the second mounting cavity is matched with the third shaft body in shape, a plurality of sealing rings are embedded in the inner wall of the second mounting cavity, and the sealing rings are in sliding sealing fit with the third shaft body; the third mounting cavity is matched with the fourth shaft body in shape, and the end face, far away from the third shaft body, of the fourth shaft body is flush with the cavity bottom of the cavity; the fifth shaft body extends into the cavity, movably penetrates through the bearing plate and is fixedly connected with the rotating blade; the casing is close to one side of first installation cavity is equipped with the gland, be equipped with the through-hole on the gland, the diameter of through-hole is less than the diameter of the second axle body, install in the through-hole with the bearing of first axle body adaptation, the gland passes through screw fixed mounting and is in on the casing.

The utility model discloses in the technical scheme of preferred, the bearing plate is kept away from be equipped with the rubber pad on the terminal surface of commentaries on classics leaf, the rubber pad with the bearing plate bonds fixedly.

The utility model discloses in the technical scheme of preferred, the cap is close to one side of cavity is equipped with spacing pipe, spacing pipe with the open mouth shape looks adaptation of cavity, the outer wall cover of spacing pipe is equipped with the rubber tube, the rubber tube with spacing pipe bonds fixedly.

The utility model discloses in the technical scheme of preferred, still inlay on the shell lid and be equipped with the sealing washer, the sealing washer corresponds the outer edge setting of the uncovered opening of cavity.

The utility model discloses among the technical scheme of preferred, at least, it is three to include the sealing ring, just the sealing ring is close to the inside side of second installation cavity is outer convex cambered surface form.

The utility model has the advantages that:

the utility model provides a high-efficient steering pump, its novel structure, the pivot divide into first axis body, second axis body, third axis body, fourth axis body and fifth axis body, forms multistage ladder structure, cooperates the position that first installation cavity, second installation cavity, third installation cavity in the casing can pivot to carry out effectual injecing, prevents that the pivot from taking place axial removal, ensures the normal rotation of pivot; and the third axis body possesses certain tapering, is equipped with the setting of a plurality of sealing rings again, can realize multistage seal structure, effectively improves sealing performance, and the setting of oil blanket also can further strengthen sealed, and overall structure can effectually prevent to take place oil impregnate, oil leak problem.

Drawings

Fig. 1 is a schematic structural view of a high efficiency steering pump provided in an embodiment of the present invention;

Fig. 2 is a schematic structural view of a housing provided in an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a rotating shaft provided in an embodiment of the present invention.

In the figure:

100. a housing; 200. a cavity; 210. a first mounting cavity; 211. oil sealing; 220. a second mounting cavity; 221. a seal ring; 230. a third mounting cavity; 300. a shell cover; 310. a limiting pipe; 320. a rubber tube; 330. a seal ring; 410. rotating the leaves; 420. a pressure bearing plate; 430. a rubber pad; 500. a rotating shaft; 510. a first shaft body; 520. a second shaft body; 530. a third shaft body; 540. a fourth shaft body; 550. a fifth shaft body; 600. a gland; 610. and a through hole.

Detailed Description

the technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1 and 2, in the specific embodiment of the present invention, a high efficiency steering pump is disclosed, which includes a casing 100 and a cavity 200 disposed on one side of the casing 100, a casing cover 300 is disposed on the outer side of the cavity 200, the casing cover 300 is fixedly connected to the casing 100 by screws, and a high pressure oil passage, an overflow port and an oil outlet are disposed in the casing 100 and are communicated with the cavity 200; a rotating vane 410 and a bearing plate 420 are arranged in the cavity 200, the outer wall of the bearing plate 420 is matched with the inner wall of the cavity 200, and the bearing plate 420 is positioned on one side of the rotating vane 410 away from the shell cover 100; a rotating shaft 500 is arranged in the casing 100 through a bearing, as shown in fig. 3, the rotating shaft 500 includes a first shaft 510, a second shaft 520, a third shaft 530, a fourth shaft 540 and a fifth shaft 550 which are sequentially connected and integrally formed, the diameter of the second shaft 520 is greater than that of the first shaft 510, the maximum diameter of the third shaft 530 is smaller than that of the second shaft 520, the diameter of the third shaft 530 is gradually reduced towards a direction away from the second shaft 520, the diameter of the fourth shaft 540 is equal to the minimum diameter of the third shaft 530, and the diameter of the fifth shaft 550 is smaller than that of the fourth shaft 540; a first mounting cavity 210, a second mounting cavity 220 and a third mounting cavity 230 are sequentially formed in the shell 100 corresponding to the rotating shaft 500, a bearing matched with the second shaft body 520 is mounted in the first mounting cavity 210, and an oil seal 211 is arranged on one side, close to the second mounting cavity 220, of the bearing; the shape of the second mounting cavity 220 is matched with that of the third shaft body 530, a plurality of sealing rings 221 are embedded in the inner wall of the second mounting cavity 220, and the sealing rings 221 are in sliding sealing fit with the third shaft body 530; the third mounting cavity 230 is matched with the fourth shaft body 540 in shape, and the end surface of the fourth shaft body 540 far away from the third shaft body 530 is flush with the cavity bottom of the cavity 200; the fifth shaft body 550 extends into the cavity 200, and the fifth shaft body 550 movably penetrates through the bearing plate 420 and is fixedly connected with the rotating vane 410; the casing 100 is close to one side of first installation cavity 210 is equipped with gland 600, be equipped with through-hole 610 on the gland 600, the diameter of through-hole 610 is less than the diameter of second axle body 520, install in the through-hole 610 with the bearing of first axle body 510 adaptation, gland 600 passes through screw fixed mounting and is in on the casing 100.

The efficient steering pump is novel in structure, the rotating shaft 500 is divided into the first shaft body 510, the second shaft body 520, the third shaft body 530, the fourth shaft body 540 and the fifth shaft body 550 to form a multi-stage stepped structure, and the positions of the rotating shaft 500 can be effectively limited by matching the first mounting cavity 210, the second mounting cavity 220 and the third mounting cavity 230 in the shell 100, so that the rotating shaft 500 is prevented from moving axially, and the normal rotation of the rotating shaft 500 is ensured; and the third shaft body 530 has a certain taper, and is provided with a plurality of sealing rings 221, so that a multi-stage sealing structure can be realized, the sealing performance is effectively improved, the sealing can be further enhanced by the arrangement of the oil seal 211, and the problems of oil leakage and oil leakage can be effectively prevented by the whole structure.

Further, a rubber pad 430 is arranged on the end surface of the bearing plate 420 far away from the rotating blade 410, and the rubber pad 430 is fixedly bonded with the bearing plate 420; the side of the rubber pad 430 away from the bearing plate 420 abuts against the bottom of the cavity 200, which means that the rubber pad 430 abuts against the joint of the fourth shaft 540 and the fifth shaft 550, and the rubber pad 430 can achieve a primary sealing function under the condition of extrusion deformation.

further, a limiting tube 310 is arranged on one side of the case cover 300 close to the cavity 200, the limiting tube 310 is matched with the open mouth shape of the cavity 200, a rubber tube 320 is sleeved on the outer wall of the limiting tube 310, and the rubber tube 320 is fixedly bonded with the limiting tube 310; the limiting tube 310 and the rubber tube 320 are arranged to facilitate the installation of the housing cover 300 and the matching and positioning between the housing cover 300 and the cavity 200, and provide a sealing condition to prevent high-pressure oil from leaking out of the connection between the housing cover 300 and the cavity 200.

Further, a sealing ring 330 is further embedded in the housing cover 300, and the sealing ring 330 is disposed corresponding to an outer edge of the open opening of the cavity 200; the design of the sealing ring 330 can further enhance the sealing performance of the housing cover 300 and the housing 100, and further enhance the sealing performance of the whole structure.

Further, at least three sealing rings 221 are included, and the side surface of each sealing ring 221 close to the inside of the second installation cavity 220 is in an outer convex arc surface shape; the plurality of seal rings 221 are pressed by the third shaft body 530 to form a multi-stage seal structure.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. A high-efficiency steering pump comprises a shell (100) and a cavity (200) arranged on one side of the shell (100), wherein a shell cover (300) is arranged on the outer side of the cavity (200), the shell cover (300) is fixedly connected with the shell (100) through screws, and a high-pressure oil channel, an overflow port and an oil outlet which are communicated with the cavity (200) are arranged in the shell (100); a rotating vane (410) and a pressure bearing plate (420) are arranged in the cavity (200), the outer wall of the pressure bearing plate (420) is matched with the inner wall of the cavity (200), and the pressure bearing plate (420) is positioned on one side, away from the shell cover (300), of the rotating vane (410); the method is characterized in that:

A rotating shaft (500) penetrates through the shell (100) through a bearing, the rotating shaft (500) comprises a first shaft body (510), a second shaft body (520), a third shaft body (530), a fourth shaft body (540) and a fifth shaft body (550), the first shaft body (510), the second shaft body (520) and the fifth shaft body (550) are sequentially connected, the diameter of the second shaft body (520) is larger than that of the first shaft body (510), the maximum diameter of the third shaft body (530) is smaller than that of the second shaft body (520), the diameter of the third shaft body (530) is gradually reduced towards the direction far away from the second shaft body (520), the diameter of the fourth shaft body (540) is equal to that of the third shaft body (530), and the diameter of the fifth shaft body (550) is smaller than that of the fourth shaft body (540); a first mounting cavity (210), a second mounting cavity (220) and a third mounting cavity (230) are sequentially formed in the shell (100) corresponding to the rotating shaft (500), a bearing matched with the second shaft body (520) is mounted in the first mounting cavity (210), and an oil seal (211) is arranged on one side, close to the second mounting cavity (220), of the bearing; the second mounting cavity (220) is matched with the third shaft body (530) in shape, a plurality of sealing rings (221) are embedded in the inner wall of the second mounting cavity (220), and the sealing rings (221) are in sliding sealing fit with the third shaft body (530); the third mounting cavity (230) is matched with the fourth shaft body (540) in shape, and the end surface of the fourth shaft body (540), which is far away from the third shaft body (530), is flush with the cavity bottom of the cavity (200); the fifth shaft body (550) extends into the cavity (200), and the fifth shaft body (550) movably penetrates through the pressure bearing plate (420) and is fixedly connected with the rotating blade (410); casing (100) are close to one side of first installation cavity (210) is equipped with gland (600), be equipped with through-hole (610) on gland (600), the diameter of through-hole (610) is less than the diameter of second axle body (520), install in through-hole (610) with the bearing of first axle body (510) adaptation, gland (600) pass through screw fixed mounting in on casing (100).

2. A high efficiency steering pump as set forth in claim 1, wherein:

the end face, far away from the rotating blade (410), of the bearing plate (420) is provided with a rubber pad (430), and the rubber pad (430) is fixedly bonded with the bearing plate (420).

3. A high efficiency steering pump as set forth in claim 1, wherein:

The cap (300) is close to one side of cavity (200) is equipped with spacing pipe (310), spacing pipe (310) with the open mouth shape looks adaptation of cavity (200), the outer wall cover of spacing pipe (310) is equipped with rubber tube (320), rubber tube (320) with spacing pipe (310) bonding is fixed.

4. a high efficiency steering pump as set forth in claim 1, wherein:

Still inlay on the cap (300) and be equipped with sealing washer (330), sealing washer (330) correspond the outer edge setting of the opening of cavity (200).

5. A high efficiency steering pump as set forth in claim 1, wherein:

The sealing ring structure at least comprises three sealing rings (221), and the side surface of each sealing ring (221) close to the inside of the corresponding second mounting cavity (220) is in an outer convex cambered surface shape.