CN218440016U

CN218440016U - Steering power cylinder

Info

Publication number: CN218440016U
Application number: CN202222556986.3U
Authority: CN
Inventors: 陈星星; 郭皓; 陈后续; 王仕宇; 罗新福
Original assignee: Zhejiang Fangzhou Engineering Machinery Equipment Co ltd
Current assignee: Zhejiang Fangzhou Engineering Machinery Equipment Co ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-02-03
Anticipated expiration: 2032-09-23

Abstract

The utility model relates to a power steering cylinder, including cylinder body, piston rod, joint bearing, piston ring and support ring, the cylinder body right side is equipped with the cylinder that the opening faces the right side, and the cylinder body left side is equipped with joint bearing, and the piston rod front end is equipped with the piston, and inserts by the opening part to pass the end cover that covers at the opening part, be equipped with a plurality of rings of recesses on the piston lateral wall, gomphosis piston ring in the recess keeps sealed through a plurality of piston rings and cylinder inner wall, and during the opening stretched into the cylinder is passed through in the end cover left side, was equipped with the support ring between end cover left side outer wall and the cylinder. The advantages are that: a sealing ring is added outside the piston, so that the piston is more sealed and more stable during bidirectional movement; a support ring is added at the opening of the end cover, so that the piston rod can move more stably; simple structure and easy installation and maintenance.

Description

Steering power-assisted cylinder

Technical Field

The utility model relates to a power steering cylinder.

Background

The conventional power steering assembly is divided into a mechanical hydraulic power steering system, an electronic hydraulic power steering system and an electric power steering system, and the mechanical hydraulic power steering system generally comprises a hydraulic pump, an oil pipe, a pressure flow control valve body, a V-shaped transmission belt, an oil storage tank and the like. The system works whether the vehicle is turned or not, and when the steering speed is high and the vehicle speed is low, the hydraulic pump is required to output higher power to obtain higher assistance. The existing steering power cylinder assembly has the defects that: the bidirectional sealing performance is general, and the telescopic part of the piston rod is stable.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a power steering cylinder.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a power steering cylinder, includes the cylinder body, the piston rod, joint bearing, piston ring and support ring, the cylinder body right side is equipped with the cylinder that the opening is towards the right side, the cylinder body left side is equipped with joint bearing, the piston rod front end is equipped with the piston, and insert by the opening part, and pass the end cover that covers at the opening part, be equipped with a plurality of rings of recesses on the piston lateral wall, gomphosis piston ring in the recess keeps sealed through a plurality of piston rings and cylinder inner wall, during the opening stretches into the cylinder is passed through in the end cover left side, be equipped with the support ring between end cover left side outer wall and the cylinder.

Furthermore, the left side of the cylinder body is provided with a cylinder head, the cylinder head is provided with a through hole which is communicated up and down, and a joint bearing is arranged in the through hole.

Furthermore, a connecting threaded sleeve is arranged on the outer side of the opening of the cylinder barrel, and the outer edge of the end cover is connected by penetrating a bolt into the connecting threaded sleeve.

Furthermore, a piston rod jack is arranged in the center of the end cover, the piston rod penetrates through the end cover from the piston rod jack, a sealing ring and an oil scraper ring are respectively embedded in the inner wall of the piston rod jack from left to right, and the outer wall of the piston rod abuts against the sealing ring and the oil scraper ring.

Furthermore, one end of the bolt penetrates through the end cover and the connecting threaded sleeve to be fastened and connected through the nut.

Further, the end cover includes end cover left side and end cover right side, end cover left side and end cover right side integrated into one piece, and piston rod jack runs through end cover left side and end cover right side, and the end cover left side stretches into in the cylinder with the laminating of cylinder inner wall, and the end cover right side covers at cylinder right side end, is equipped with first recess on the outer wall of end cover left side, is equipped with the support ring in the first recess, still is equipped with O type circle between support ring lower extreme and the first recess bottom surface.

Furthermore, the right end of the piston rod is positioned on the outer side of the cylinder barrel and is provided with a connecting hole.

Furthermore, the left end of the piston rod is provided with 2 gradually reduced step surfaces smaller than the piston rod, the step surfaces are gradually reduced from the right side to the left side, each step surface comprises a first step surface and a second step surface, the piston is sleeved on the outer side of the second step surface, and the piston is fixed on the first step surface through threaded connection of a first nut.

Furthermore, an O-shaped ring is arranged between the piston and the second step surface.

Further, the inner chamber that the cylinder inner wall formed, the inner chamber left side is equipped with the cavity that is less than the piston, is equipped with the hole on the chamber wall.

The utility model has the advantages that: 1. a sealing ring is added outside the piston, so that the piston is more sealed and more stable during bidirectional movement;

2. a support ring is added at the end cover and the opening, so that the piston rod can move and stretch more stably;

3. simple structure and easy installation and maintenance.

Drawings

Fig. 1 is a sectional view of the present invention.

Fig. 2 is a schematic view of the cylinder structure.

Fig. 3 is a schematic view of the piston rod structure.

Fig. 4 is a schematic view of the end cap construction.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to fig. 1-4 of the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to the attached drawings 1-4, the power steering cylinder comprises a cylinder body 1, a piston rod 2, a joint bearing 3, piston rings 4 and a support ring 5, wherein a cylinder barrel 6 with an opening 8 facing the right is arranged on the right side of the cylinder body, the joint bearing is arranged on the left side of the cylinder body, a piston 7 is arranged at the front end of the piston rod and is inserted into the opening and penetrates through an end cover 9 covering the opening, a plurality of grooves are formed in the outer side wall of the piston, the piston rings 4 are embedded in the grooves and are kept sealed with the inner wall of the cylinder barrel through a plurality of piston rings, the left side of the end cover extends into the cylinder barrel through the opening, and the support ring is arranged between the outer wall of the left side of the end cover and the cylinder barrel.

A cylinder head 13 is arranged on the left side of a cylinder body, a through hole 14 which is communicated up and down is arranged on the cylinder head, and a joint bearing is arranged in the through hole.

A steering power cylinder is characterized in that a connecting threaded sleeve 15 is arranged on the outer side of an opening of a cylinder barrel, and an outer edge of an end cover is connected by a bolt 16 which penetrates through the connecting threaded sleeve.

A piston rod jack 17 is arranged in the center of an end cover, a piston rod penetrates through the end cover from the piston rod jack, a sealing ring 18 and an oil scraper ring 19 are respectively embedded on the inner wall of the piston rod jack from left to right, and the outer wall of the piston rod abuts against the sealing ring and the oil scraper ring.

One end of a bolt penetrates through an end cover and is tightly connected with a connecting threaded sleeve through a nut.

The utility model provides a power steering cylinder, the end cover includes end cover left side and end cover right side, end cover left side and end cover right side integrated into one piece, and piston rod jack runs through end cover left side and end cover right side, and the end cover left side stretches into in the cylinder and laminates with the cylinder inner wall, and the end cover right side covers at cylinder right side end, is equipped with first recess 20 on the outer wall of end cover left side, is equipped with the support ring in the first recess, still is equipped with O type circle between support ring lower extreme and the first recess bottom surface.

A steering power cylinder is provided, the right end of a piston rod is arranged outside a cylinder barrel and is provided with a connecting hole 21.

The left end of a piston rod is 2 gradually reduced step surfaces which are smaller than the piston rod and are gradually reduced from the right side to the left side, each step surface comprises a first step surface 22 and a second step surface 23, a piston is sleeved on the outer side of the second step surface, and a first nut 24 is in threaded connection with the first step surface to fix the piston.

An O-shaped ring is arranged between a piston and a second step surface.

A cavity formed by the inner wall of a cylinder barrel, a cavity 11 smaller than a piston is arranged on the left side of the cavity, and a hole is formed in the wall of the cavity.

A sealing ring is additionally arranged outside a piston of the power steering cylinder, so that the power steering cylinder is more sealed and more stable during bidirectional movement.

A support ring is additionally arranged at an end cover and an opening, so that a piston rod can stretch and retract more stably.

A piston rod material of a steering power cylinder uses a 45# hard chromium plated rod, a cylinder barrel material is improved by a 45# honing tube, and the performance of a product can be more stable due to standard specification, precise size and bright roughness.

A piston of the steering power-assisted cylinder is made of fluorine rubber, so that the sealing performance is stable, dust and stains can be isolated more effectively, and the service life of a product is prolonged.

A steering cylinder is characterized in that a welding part of the similar steering cylinder on the market leaks oil, the service cycle is not reasonable, after market research, a drying oven stored at 350 to 400 ℃ is adopted, an E7018 welding rod which is baked for 1 to 2h is adopted, a workpiece is welded after being heated, and the stability of the product can be improved and the service life of the product can be prolonged better than that of similar products on the market.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a power steering cylinder, includes cylinder body, piston rod, joint bearing, piston ring and support ring, its characterized in that: the cylinder body right side is equipped with the opening towards the right cylinder, and the cylinder body left side is equipped with joint bearing, and the piston rod front end is equipped with the piston, and inserts by the opening part to pass the end cover that covers at the opening part, be equipped with a plurality of rings of recesses on the piston lateral wall, the gomphosis piston ring in the recess keeps sealed through a plurality of piston rings and cylinder inner wall, and the end cover left side is equipped with the support ring through the opening during stretching into the cylinder between end cover left side outer wall and the cylinder.

2. A steering cylinder according to claim 1, wherein: the left side of the cylinder body is provided with a cylinder head, the cylinder head is provided with a through hole which is communicated up and down, and a joint bearing is arranged in the through hole.

3. A steering cylinder according to claim 2, wherein: the outer side of the opening of the cylinder barrel is provided with a connecting threaded sleeve, and the outer edge of the end cover is connected by penetrating the connecting threaded sleeve through a bolt.

4. A steering cylinder according to claim 3, wherein: the center of the end cover is provided with a piston rod jack, the piston rod penetrates through the end cover from the piston rod jack, the inner wall of the piston rod jack is respectively embedded with a sealing ring and an oil scraper ring from left to right, and the outer wall of the piston rod is abutted against the sealing ring and the oil scraper ring.

5. A steering cylinder according to claim 2, wherein: one end of the bolt penetrates through the end cover and the connecting threaded sleeve to be fastened and connected through a nut.

6. The steering cylinder according to claim 4, wherein: the end cover includes end cover left side and end cover right side, and end cover left side and end cover right side integrated into one piece, and the piston rod jack runs through end cover left side and end cover right side, and the end cover left side is stretched into in the cylinder and is laminated with the cylinder inner wall, and the end cover right side covers at cylinder right side end, is equipped with first recess on the outer wall of end cover left side, is equipped with the support ring in the first recess, still is equipped with O type circle between support ring lower extreme and the first recess bottom surface.

7. The steering cylinder according to claim 4, wherein: the right end of the piston rod is positioned on the outer side of the cylinder barrel and is provided with a connecting hole.

8. A steering cylinder according to claim 7, wherein: the left end of the piston rod is provided with 2 gradually reduced step surfaces smaller than the piston rod, the step surfaces are gradually reduced from the right side to the left side, each step surface comprises a first step surface and a second step surface, the piston is sleeved on the outer side of the second step surface, and the piston is fixed on the first step surface through threaded connection of a first nut.

9. A steering cylinder according to claim 8, wherein: an O-shaped ring is arranged between the piston and the second step surface.

10. A steering cylinder according to claim 1, wherein: the inner chamber that the cylinder inner wall formed, the inner chamber left side is equipped with the cavity that is less than the piston, is equipped with the hole on the chamber wall.