CN216951091U

CN216951091U - Steering oil cylinder

Info

Publication number: CN216951091U
Application number: CN202220269882.1U
Authority: CN
Inventors: 吴众
Original assignee: Changsha Changheng Intelligent Technology Co ltd
Current assignee: Changsha Changheng Intelligent Technology Co ltd
Priority date: 2022-02-10
Filing date: 2022-02-10
Publication date: 2022-07-12
Anticipated expiration: 2032-02-10

Abstract

The utility model provides a steering oil cylinder. The steering cylinder includes: the piston comprises a cylinder barrel, a piston rod, a first piston half block, a second piston half block, a third piston half block, a fourth piston half block and an oil seal; an oil cavity is formed in the cylinder barrel; the first piston half block and the second piston half block are combined oppositely in the radial direction to form a first piston, and the third piston half block and the fourth piston half block are combined oppositely in the radial direction to form a second piston; first piston, oil blanket and second piston in the oil intracavity is arranged in proper order, the piston rod stretches into the oil intracavity, first piston, oil blanket and second piston in proper order the card cover in on the piston rod, through adopting the structure of piston and piston rod components of a whole that can function independently, the structure that can simplify the piston rod reduces the preparation degree of difficulty of piston rod, and the material utilization ratio when promoting the preparation of piston rod falls into two piston halves with each piston and can reduces the assembly degree of difficulty of piston and piston rod, increases the lifting surface area between piston and the piston rod, promotes hydro-cylinder's load-carrying capacity.

Description

Steering oil cylinder

Technical Field

The utility model relates to the technical field of hydraulic oil cylinders, in particular to a steering oil cylinder.

Background

The steering cylinder usually uses hydraulic oil as a working medium to convert hydraulic energy of liquid into mechanical energy of linear motion for realizing the steering function of the apparatus, and has been widely applied to a plurality of different fields.

Generally, a steering cylinder includes a cylinder tube, a piston rod and a piston provided in the cylinder tube, and guide sleeves provided at both ends of the cylinder tube. Among the prior art, steering cylinder is in order to guarantee structural strength and leakproofness, can design piston and piston rod into a whole, although this kind of design can satisfy the requirement of structural strength and leakproofness to a certain extent, but because the structure of the piston rod of integral type piston is complicated, lead to the processing degree of difficulty great, and because the piston is big with the external diameter difference of piston rod, the material utilization who leads to the piston rod of integral type piston is extremely low, both superpose, the manufacturing cost who leads to the piston rod of integral type piston is high, low efficiency, can not satisfy the market needs under many scenes.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a steering oil cylinder, which can improve the material utilization rate of the steering oil cylinder, reduce the production difficulty of the steering oil cylinder, improve the production efficiency of a writing oil cylinder and reduce the production cost of the steering oil cylinder.

In order to achieve the above object, the present invention provides a steering cylinder, comprising: the piston comprises a cylinder barrel, a piston rod, a first piston half block, a second piston half block, a third piston half block, a fourth piston half block and an oil seal;

an oil cavity is formed in the cylinder barrel; the first piston half block and the second piston half block are combined in a radial opposite mode to form a first piston, and the third piston half block and the fourth piston half block are combined in a radial opposite mode to form a second piston;

the first piston, the oil seal and the second piston are sequentially arranged in the oil cavity, the piston rod extends into the oil cavity, and the first piston, the oil seal and the second piston are sequentially sleeved on the piston rod in a clamping manner.

The piston rod comprises a first rod body section, a first piston section, an oil seal section, a second piston section and a second rod body section which are sequentially connected;

the first piston is clamped in the first piston section, the oil seal is clamped in the oil seal section, and the second piston is clamped in the second piston section.

The first rod body segment extends from one end of the oil chamber, and the second rod body segment extends from the other end of the oil chamber.

The first rod body section, the first piston section, the oil seal section, the second piston section and the second rod body section are integrally formed and connected.

The first piston section comprises a first subsection connected with the oil seal section and a second subsection connected with the first subsection and the first rod body section;

the second piston section comprises a third subsection connected with the oil seal section and a fourth subsection connected with the third subsection and the second rod body section;

the diameter of the first subsection is smaller than that of the second subsection, and the diameter of the third subsection is smaller than that of the fourth subsection;

the first piston is provided with a first through hole and a second through hole which are respectively matched with the first subsection and the second subsection;

and a third through hole and a fourth through hole which are respectively matched with the third subsection and the fourth subsection are formed on the second piston.

The diameters of the first rod body section, the second rod body section, the oil seal section, the fourth rod body section and the second rod body section are equal.

The steering cylinder further includes: the two wear-resistant rings are respectively sleeved on the outer peripheral surfaces of the first piston and the second piston, and the two wear-resistant rings are in contact with the side wall of the oil cavity.

A first clamping groove and a second clamping groove are formed on the outer peripheral surfaces of the first piston and the second piston respectively;

the two wear-resistant rings are respectively sleeved on the first clamping groove and the second clamping groove in a clamping manner.

The wear-resistant ring is made of POM.

The steering cylinder further includes: and the two guide sleeves are respectively in threaded connection with two ends of the oil cavity.

The utility model has the beneficial effects that: the utility model provides a steering cylinder, comprising: the piston comprises a cylinder barrel, a piston rod, a first piston half block, a second piston half block, a third piston half block, a fourth piston half block and an oil seal; an oil cavity is formed in the cylinder barrel; the first piston half block and the second piston half block are combined in a radial opposite mode to form a first piston, and the third piston half block and the fourth piston half block are combined in a radial opposite mode to form a second piston; first piston, oil blanket and second piston in the oil intracavity is arranged in proper order, the piston rod stretches into the oil intracavity, first piston, oil blanket and second piston in proper order the card cover in on the piston rod, through adopting the structure of piston and piston rod components of a whole that can function independently, can simplify the structure of piston rod, reduce the preparation degree of difficulty of piston rod, material utilization ratio when promoting the preparation of piston rod, simultaneously, fall into two piston half with each piston and can reduce the assembly degree of difficulty of piston and piston rod, increase the lifting force area between piston and the piston rod, promote the load-carrying capacity of hydro-cylinder.

Drawings

For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the utility model, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the utility model.

In the drawings, there is shown in the drawings,

FIG. 1 is a schematic view of a steering cylinder of the present invention;

FIG. 2 is a schematic view of a piston rod in the steering cylinder of the present invention;

FIG. 3 is an axial cross-sectional view of the first/second piston of the steering cylinder of the present invention;

FIG. 4 is a left side view of the first/second piston of the steering cylinder of the present invention;

fig. 5 is a schematic diagram of the cooperation of the piston rod, the first piston and the second piston in the steering cylinder according to the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes are not set forth in detail in order to avoid obscuring the description of the present application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

Referring to fig. 1 to 5, the present invention provides a steering cylinder, including: the piston comprises a cylinder barrel 10, a piston rod 20, a first piston half block 31, a second piston half block 32, a third piston half block 33, a fourth piston half block 34 and an oil seal 40;

an oil cavity 11 is formed in the cylinder barrel 10; the first piston half 31 and the second piston half 32 are combined in a radially opposite manner to form a first piston 301, and the third piston half 33 and the fourth piston half 34 are combined in a radially opposite manner to form a second piston 302;

the first piston 301, the oil seal 40 and the second piston 302 are sequentially arranged in the oil chamber 11, the piston rod 20 extends into the oil chamber 11, and the first piston 301, the oil seal 40 and the second piston 302 are sequentially sleeved on the piston rod 20 in a clamping manner.

Specifically, the piston rod 20 comprises a first rod body section 21, a first piston section 22, an oil seal section 23, a second piston section 24 and a second rod body section 25 which are connected in sequence;

the first piston 301 is clamped in the first piston section 22, the oil seal 40 is clamped in the oil seal section 23, and the second piston 302 is clamped in the second piston section 24.

Specifically, the first rod body segment 21 protrudes from one end of the oil chamber 11, and the second rod body segment 25 protrudes from the other end of the oil chamber 11.

Specifically, the first piston section 22 comprises a first sub-section 221 connected to the oil seal section 23 and a second sub-section 222 connected to the first sub-section 221 and the first rod body section 21;

the second piston section 24 comprises a third sub-section 241 connected to the oil seal section 23 and a fourth sub-section 242 connected to the third sub-section 241 and the second rod section 25;

the diameter of the first subsection 221 is smaller than that of the second subsection 222, and the diameter of the third subsection 241 is smaller than that of the fourth subsection 242;

the first piston 301 is formed with a first through hole 303 and a second through hole 304 which are respectively matched with the first subsection 221 and the second subsection 222;

the second piston 302 is formed with a third through hole 305 and a fourth through hole 306 which are respectively matched with the third subsection 241 and the fourth subsection 242.

Specifically, the diameters of the first rod section 21, the second sub-section 222, the oil seal section 23, the fourth sub-section 242, and the second rod section 25 are equal.

Further, when the first piston 301 is clamped on the first piston section 22, the first through hole 303 is clamped at the first sub-section 221, the second through hole 303 is clamped at the second sub-section 222, the first through hole 303 is communicated with the second through hole 304, and the diameter of the first sub-section 221 is smaller than that of the second sub-section 222, so that a clamping groove structure is formed, and the first piston 301 is further limited to slide along the axial direction of the piston rod 20.

Further, when the first piston 302 is clamped on the second piston section 24, the third through hole 305 is clamped at the third subsection 241, the fourth through hole 306 is clamped at the second subsection 242, the third through hole 305 is communicated with the fourth through hole 306, and the diameter of the third subsection 241 is smaller than that of the fourth subsection 242, so that a clamping groove structure is formed, and the second piston 302 is further limited to slide along the axial direction of the piston rod 20.

Specifically, the steering cylinder further includes: the two wear-resistant rings 50 are respectively sleeved on the outer peripheral surfaces of the first piston 301 and the second piston 302, and the two wear-resistant rings 50 are in contact with the side wall of the oil chamber 11.

Further, a first locking groove 307 and a second locking groove 308 are formed on the outer peripheral surfaces of the first piston 301 and the second piston 302, respectively;

the two wear-resistant rings 50 are respectively fitted on the first locking groove 307 and the second locking groove 308.

Specifically, the material of the wear-resistant ring 50 is Polyoxymethylene (POM).

It should be noted that the wear-resistant ring 50 is sleeved on the outer circumferential surfaces of the first piston 301 and the second piston 302 to effectively limit the relative separation of the first piston half 31, the second piston half 32, the third piston half 33 and the fourth piston half 34, so as to prevent the first piston 301 and the second piston 302 from opening outwards.

During manufacturing, the first piston 301 and the second piston 302 can be manufactured, then the first piston 301 and the second piston 302 are divided into two halves along the longitudinal section of the first piston 301 and the second piston 302, so as to obtain a first piston half block 31 and a second piston half block 32, a third piston half block 33 and a fourth piston half block 34 which can form the first piston 301 and the second piston 302, and the first piston 301 and the second piston 302 can be conveniently sleeved on the piston rod 20 by manufacturing the first piston 301 and the second piston 302 into a form of the first piston half block 31 and the second piston half block 32, the third piston half block 33 and the fourth piston half block 34.

Further, compared with the mode that the piston and the piston rod are connected in a welding or threaded mode in the prior art, the connecting mode has the advantages that the contact area between the piston and the piston rod is large, the load capacity is good, and therefore the steering oil cylinder has the advantages of being low in production cost, high in efficiency and good in performance.

It should be noted that, the first rod body section 21, the first piston section 22, the oil seal section 23, the second piston section 24 and the second rod body section 25 are integrally formed and connected, when manufacturing, the diameter of the original profile is only required to be larger than that of the first rod body section 21, and in the existing structure in which the piston and the piston rod are integrated, the diameter of the original profile is required to be larger than that of the piston, so compared with the prior art, in the steering cylinder of the present invention, the diameter of the profile required for manufacturing the piston rod is greatly reduced, the material utilization rate is greatly improved, and because the piston is not synchronously manufactured any more, the structure of the piston rod is greatly simplified, the manufacturing difficulty is significantly reduced, the manufacturing efficiency is greatly improved, and the manufacturing cost is significantly reduced.

Specifically, the steering cylinder further includes: and the two guide sleeves 60 are respectively in threaded connection with two ends of the oil cavity 11.

The utility model provides a steering cylinder, comprising: the piston comprises a cylinder barrel, a piston rod, a first piston half block, a second piston half block, a third piston half block, a fourth piston half block and an oil seal; an oil cavity is formed in the cylinder barrel; the first piston half block and the second piston half block are combined in a radial opposite mode to form a first piston, and the third piston half block and the fourth piston half block are combined in a radial opposite mode to form a second piston; first piston, oil blanket and second piston in the oil intracavity is arranged in proper order, the piston rod stretches into the oil intracavity, first piston, oil blanket and second piston in proper order the card cover in on the piston rod, through adopting the structure of piston and piston rod components of a whole that can function independently, can simplify the structure of piston rod, reduce the preparation degree of difficulty of piston rod, material utilization ratio when promoting the preparation of piston rod, simultaneously, fall into two piston half with each piston and can reduce the assembly degree of difficulty of piston and piston rod, increase the lifting force area between piston and the piston rod, promote the load-carrying capacity of hydro-cylinder.

As described above, it will be apparent to those skilled in the art that other various changes and modifications may be made based on the technical solution and concept of the present invention, and all such changes and modifications are intended to fall within the scope of the appended claims.

Claims

1. A steering cylinder, comprising: the piston comprises a cylinder barrel (10), a piston rod (20), a first piston half block (31), a second piston half block (32), a third piston half block (33), a fourth piston half block (34) and an oil seal (40);

an oil cavity (11) is formed in the cylinder barrel (10); the first piston half block (31) and the second piston half block (32) are combined in a radial direction oppositely to form a first piston (301), and the third piston half block (33) and the fourth piston half block (34) are combined in a radial direction oppositely to form a second piston (302);

first piston (301), oil blanket (40) and second piston (302) in arrange in proper order in oil pocket (11), piston rod (20) stretch into in oil pocket (11), first piston (301), oil blanket (40) and second piston (302) cutting ferrule in proper order on piston rod (20).

2. The steering cylinder according to claim 1, characterized in that the piston rod (20) comprises a first rod body section (21), a first piston section (22), an oil seal section (23), a second piston section (24) and a second rod body section (25) which are connected in sequence;

the first piston (301) is clamped in the first piston section (22), the oil seal (40) is clamped in the oil seal section (23), and the second piston (302) is clamped in the second piston section (24).

3. The steering cylinder as claimed in claim 2, characterized in that the first rod body segment (21) protrudes from one end of the oil chamber (11), and the second rod body segment (25) protrudes from the other end of the oil chamber (11).

4. The steering cylinder according to claim 2, characterized in that the first rod body section (21), the first piston section (22), the oil seal section (23), the second piston section (24) and the second rod body section (25) are integrally formed and connected.

5. Steering cylinder according to claim 2, characterised in that the first piston section (22) comprises a first sub-section (221) connected to the oil-sealed section (23) and a second sub-section (222) connected to the first sub-section (221) and the first rod section (21);

the second piston section (24) comprises a third subsection (241) connected to the oil seal section (23) and a fourth subsection (242) connected to the third subsection (241) and the second rod section (25);

the diameter of the first subsection (221) is smaller than that of the second subsection (222), and the diameter of the third subsection (241) is smaller than that of the fourth subsection (242);

the first piston (301) is provided with a first through hole (303) and a second through hole (304) which are respectively matched with the first subsection (221) and the second subsection (222);

the second piston (302) is formed with a third through hole (305) and a fourth through hole (306) cooperating with the third subsection (241) and the fourth subsection (242), respectively.

6. Steering cylinder according to claim 5, characterized in that the first rod section (21), the second subsection (222), the oil seal section (23), the fourth subsection (242) and the second rod section (25) are of equal diameter.

7. The steering cylinder as claimed in claim 1, further comprising: the two wear-resistant rings (50) are respectively sleeved on the outer peripheral surfaces of the first piston (301) and the second piston (302), and the two wear-resistant rings (50) are in contact with the side wall of the oil cavity (11).

8. The steering cylinder according to claim 7, wherein the first piston (301) and the second piston (302) are respectively formed with a first locking groove (307) and a second locking groove (308) on the outer peripheral surfaces thereof;

the two wear-resistant rings (50) are respectively clamped on the first clamping groove (307) and the second clamping groove (308).

9. Steering cylinder according to claim 7, characterized in that the material of the wear ring (50) is POM.

10. The steering cylinder as claimed in claim 1, further comprising: the two guide sleeves (60) are respectively in threaded connection with two ends of the oil cavity (11).