CN219472460U - Dustproof sealed type amplitude-variable oil cylinder - Google Patents

Abstract

The utility model relates to the technical field of amplitude-variable oil cylinders, in particular to a dustproof sealed amplitude-variable oil cylinder, which comprises a shell, wherein a piston head is sleeved in the shell in a sliding manner, a first annular groove, a second annular groove and a third annular groove are respectively arranged on the piston head, a piston head sealing ring tightly attached to the shell is wrapped in the first annular groove, a piston head anti-fouling ring tightly attached to the shell is wrapped in the second annular groove, and a piston head anti-wear ring tightly attached to the shell is wrapped in the third annular groove. According to the utility model, the piston head and the built-in sleeve are provided with the corresponding sealing ring, the anti-fouling ring and the dustproof ring structures, so that the sealing and dustproof effects of oil in the oil cylinder can be ensured, and a buffer space is reserved between the buffer sleeve and the built-in sleeve when the piston rod is ejected out through the cooperation of the buffer sleeve and the spring.

Description

Dustproof sealed type amplitude-variable oil cylinder

Technical Field

The utility model relates to the technical field of amplitude-variable cylinders, in particular to a dustproof sealed amplitude-variable cylinder.

Background

The cylinder is a hydraulic cylinder, the hydraulic cylinder is a linear motion type actuating element with output force being in direct proportion to the effective area of a piston and pressure differences on two sides of the piston, the hydraulic cylinder has the function of converting hydraulic energy into mechanical energy, the input quantity of the hydraulic cylinder is the flow and pressure of fluid, and the output is linear motion speed and force.

The piston of the hydraulic cylinder can complete linear reciprocating motion, the output linear displacement is limited, and the hydraulic cylinder is an energy conversion device for converting hydraulic energy into mechanical energy of reciprocating linear motion.

The hydraulic cylinder basically consists of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffer device and an exhaust device, and other devices are necessary according to specific application occasions.

The oil cylinder is mainly used for places needing to support heavy objects for a long time, can still support heavy objects when oil pressure is removed, is safe and reliable, can be used for underwater single-action, load retraction and nut self-locking, so that the load is safer, and is particularly an easy-to-operate control and self-locking jack in large engineering.

In the current oil cylinder structure, in order to ensure the oil pressure pushing and oil pressure retracting of a piston rod, the sealing stability of a piston head part is required, so that the piston head part is required to be further sealed and protected to ensure the service durability of the oil cylinder.

Disclosure of Invention

The utility model aims to provide a dustproof sealing type amplitude variation oil cylinder so as to solve the problem of further sealing and protecting a piston head part.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a dustproof sealed type amplitude-changing hydro-cylinder, includes the casing, sliding sleeve is equipped with the piston head in the casing, be provided with first ring channel, second ring channel and third ring channel on the piston head respectively, the parcel has the piston head sealing washer of hugging closely with the casing in the first ring channel, the parcel has the piston head antifouling ring of hugging closely with the casing in the second ring channel, the parcel has the piston head antifriction ring of hugging closely with the casing in the third ring channel.

Preferably, a piston rod is fixed on the piston head, and an end cover sleeved with the piston rod in a sliding way is fixed at the end part of the shell.

Preferably, the inner wall of the shell is fixedly embedded with an inner sleeve, and the piston rod and the inner sleeve are arranged in a sliding and penetrating manner.

Preferably, a fourth annular groove is formed in the inner sleeve, and an inner sleeve anti-fouling ring clung to the shell is wrapped in the fourth annular groove.

Preferably, a fifth annular groove is formed in the inner sleeve, and an inner sleeve sealing ring tightly attached to the shell is wrapped in the fifth annular groove.

Preferably, a sixth annular groove is formed in the inner sleeve, and a dust-proof ring of the inner sleeve, which is tightly attached to the shell, is wrapped in the sixth annular groove.

Preferably, a spring which is wound around the piston rod is fixed on the built-in sleeve, and a buffer sleeve which is sleeved with the piston rod in a sliding manner is fixed on the spring.

Preferably, a first engagement ring is fixed on one side of the shell, and a second engagement ring is fixed on the outer end of the piston rod.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the piston head and the built-in sleeve are provided with the corresponding sealing ring, the anti-fouling ring and the dustproof ring structures, so that the sealing and dustproof effects of oil in the oil cylinder can be ensured.

2. The buffer sleeve is matched with the spring, so that a buffer space is formed between the buffer sleeve and the built-in sleeve when the piston rod is ejected.

Drawings

FIG. 1 is an overall block diagram of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model;

FIG. 3 is an enlarged schematic view of the utility model at a;

fig. 4 is an enlarged schematic view of the present utility model at b.

In the figure: 1. a housing; 11. a piston head; 12. a piston head seal ring; 13. a first annular groove; 14. a second annular groove; 15. a piston head anti-fouling ring; 16. a third annular groove; 17. a piston head wear ring; 18. a piston rod; 19. an end cap; 2. a built-in sleeve; 21. a fourth annular groove; 22. an anti-fouling ring is sleeved inside; 23. a fifth annular groove; 24. a sealing ring is sleeved in the inner part; 25. a sixth annular groove; 26. a dust-proof ring is sleeved in the inner part; 4. a spring; 41. a buffer sleeve; 5. a first adapter ring; 51. and a second adapter ring.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

Referring to fig. 1-4, a dustproof sealed amplitude-variable oil cylinder comprises a shell 1, a piston head 11 is sleeved in the shell 1 in a sliding manner, a first annular groove 13, a second annular groove 14 and a third annular groove 16 are respectively arranged on the piston head 11, a piston head sealing ring 12 tightly attached to the shell 1 is wrapped in the first annular groove 13, a piston head antifouling ring 15 tightly attached to the shell 1 is wrapped in the second annular groove 14, and a piston head abrasion-resistant ring 17 tightly attached to the shell 1 is wrapped in the third annular groove 16.

Further, a piston rod 18 is fixed on the piston head 11, an end cover 19 sleeved with the piston rod 18 in a sliding manner is fixed at the end part of the shell 1, through an inlet and outlet structure of hydraulic oil, a valve and other structures, and an oil cylinder part of the device, a complete hydraulic cylinder telescopic cylinder mechanism is formed, the process is that hydraulic oil enters the oil cylinder through a one-way valve through a manual pressurizing rod (a hydraulic manual pump), at the moment, the hydraulic oil entering the oil cylinder can not back up due to the one-way valve, the cylinder rod is forced to be upward, then work is continuously performed to enable the hydraulic oil to enter the hydraulic cylinder, the hydraulic cylinder is continuously lifted, the hydraulic valve is opened when the hydraulic oil is required to be lowered, the hydraulic oil returns to an oil tank, the simplest working principle is realized, the other working principles are all improved on the basis, and the principle of the cylinder and the oil cylinder is basically the same as that of the oil cylinder.

Further, the inner wall of the shell 1 is fixedly embedded with the built-in sleeve 2, the piston rod 18 and the built-in sleeve 2 are arranged in a sliding and penetrating mode, the built-in sleeve 2 can achieve a sealing effect, and the end cover 19 is matched to achieve double dustproof protection, so that air pressure difference generated when hydraulic oil flows in and out is avoided, dust is caused to enter, and leakage occurs in hydraulic oil conveying.

Further, a fourth annular groove 21 is formed in the inner sleeve 2, an inner sleeve anti-fouling ring 22 tightly attached to the shell 1 is wrapped in the fourth annular groove 21, and an oil-fouling permeation preventing effect can be achieved on the inner sleeve 2 and the shell 1.

Further, a fifth annular groove 23 is arranged on the inner sleeve 2, and an inner sleeve sealing ring 24 tightly attached to the shell 1 is wrapped in the fifth annular groove 23.

Further, a sixth annular groove 25 is formed in the inner sleeve 2, an inner sleeve dustproof ring 26 tightly attached to the shell 1 is wrapped in the sixth annular groove 25, and the piston head sealing ring 12, the piston head antifouling ring 15, the piston head abrasion-resistant ring 17, the inner sleeve antifouling ring 22, the inner sleeve sealing ring 24 and the inner sleeve dustproof ring 26 are made of rubber materials, so that the inner sleeve dustproof ring is good in durability and wear resistance, tightly attached and has a sealing effect.

The inner wall of the shell 1, the piston head 11 and the built-in sleeve 2 are divided into two parts, wherein one part is a piston rod oil pressure propelling part, the other part is a piston rod oil pressure retracting part, the upper end and the lower end of the piston rod oil pressure propelling part are fixedly embedded with a first oil inlet check valve and a first oil outlet check valve, and the upper end and the lower end of the piston rod oil pressure retracting part are fixedly embedded with a second oil inlet check valve and a second oil outlet check valve.

Further, the spring 4 wound around the piston rod 18 is fixed to the inner housing 2, the buffer housing 41 slidably sleeved on the piston rod 18 is fixed to the spring 4, and the initial state of the spring 4 is in a balanced state, so that a buffer effect is achieved between the inner housing 2 and the buffer housing 41 when the piston head 11 moves.

Further, one side of the shell 1 is fixed with a first engagement ring 5, the outer end of the piston rod 18 is fixed with a second engagement ring 51, the first engagement ring 5 and the second engagement ring 51 are of circular ring structures, and can be conveniently hooked with external components.

When the embodiment is used, the following steps are adopted: the piston rod 18 can be driven to carry out telescopic adjustment through the movement of the piston head 11, and the piston head 11 can realize the sealing and oil pollution leakage preventing effects of the piston head 11 through the piston head sealing ring 12, the piston head anti-fouling ring 15 and the piston head anti-wear ring 17.

The end part of the shell 1 can be sealed in a dustproof manner through the built-in sleeve 2, external dust is prevented from entering the shell 1, dust and impurities are adhered to hydraulic oil, and oil pipes, valves and interfaces are blocked.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a dustproof sealed type amplitude-changing hydro-cylinder, includes casing (1), its characterized in that: the anti-fouling piston comprises a shell body (1), and is characterized in that a piston head (11) is sleeved in the shell body (1) in a sliding manner, a first annular groove (13), a second annular groove (14) and a third annular groove (16) are respectively arranged on the piston head (11), a piston head sealing ring (12) tightly attached to the shell body (1) is wrapped in the first annular groove (13), a piston head anti-fouling ring (15) tightly attached to the shell body (1) is wrapped in the second annular groove (14), and a piston head anti-wear ring (17) tightly attached to the shell body (1) is wrapped in the third annular groove (16).

2. The dustproof sealed type amplitude-changing oil cylinder according to claim 1, wherein: a piston rod (18) is fixed on the piston head (11), and an end cover (19) which is sleeved with the piston rod (18) in a sliding way is fixed at the end part of the shell (1).

3. The dustproof sealed type amplitude-changing cylinder according to claim 2, wherein: the inner wall of the shell (1) is fixedly embedded with the built-in sleeve (2), and the piston rod (18) and the built-in sleeve (2) are arranged in a sliding penetrating mode.

4. A dust seal type amplitude changing cylinder as claimed in claim 3, wherein: a fourth annular groove (21) is formed in the inner sleeve (2), and an inner sleeve anti-fouling ring (22) tightly attached to the shell (1) is wrapped in the fourth annular groove (21).

5. The dustproof sealed type amplitude changing cylinder according to claim 4, wherein: a fifth annular groove (23) is formed in the inner sleeve (2), and an inner sleeve sealing ring (24) tightly attached to the shell (1) is wrapped in the fifth annular groove (23).

6. The dustproof sealed type amplitude changing cylinder according to claim 5, wherein: the inner sleeve (2) is provided with a sixth annular groove (25), and an inner sleeve dustproof ring (26) which is tightly attached to the shell (1) is wrapped in the sixth annular groove (25).

7. A dust seal type amplitude changing cylinder as claimed in claim 3, wherein: a spring (4) wound around the piston rod (18) is fixed on the built-in sleeve (2), and a buffer sleeve (41) sleeved with the piston rod (18) in a sliding manner is fixed on the spring (4).

8. The dustproof sealed type amplitude-changing cylinder according to claim 2, wherein: one side of the shell (1) is fixed with a first linking ring (5), and the outer end of the piston rod (18) is fixed with a second linking ring (51).