CN219366457U

CN219366457U - Buffering protection hydraulic cylinder

Info

Publication number: CN219366457U
Application number: CN202320264405.0U
Authority: CN
Inventors: 陈翊凡
Original assignee: Quanzhou Junde Machinery Co ltd
Current assignee: Quanzhou Junde Machinery Co ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-07-18
Anticipated expiration: 2033-02-21

Abstract

The utility model belongs to the technical field of hydraulic cylinders, and particularly relates to a buffering protection hydraulic cylinder, which structurally comprises a cylinder body, wherein a cylinder cavity is formed in the inner side of the cylinder body, one cylinder end of the cylinder body is penetrated by a piston rod in a sealing manner, a piston is attached to the inner side of the cylinder cavity in a movable manner, and the piston is fixedly connected with the piston rod; the cylinder body and the outer side of the piston are fixedly provided with a protection component; the protection assembly comprises a convex ring, wherein the periphery of the convex ring is fixedly provided with a first magnetic ring in a fit manner, the convex ring is provided with two groups of convex rings which are relatively and fixedly arranged at two opposite ends of the piston, the convex rings are arranged at two ends of the piston, the periphery of the convex ring is provided with a first magnetic ring, the outer side of a cylinder body is provided with a second magnetic ring, the second magnetic ring is arranged on the outer side of the first magnetic ring, and the inner side of the second magnetic ring is the same as the magnetic pole on the outer side of the first magnetic ring, so that repulsive force is formed between the first magnetic ring and the second magnetic ring, the axial stability of the piston during displacement is improved, and the eccentric wear phenomenon is greatly reduced.

Description

Buffering protection hydraulic cylinder

Technical Field

The utility model belongs to the technical field of hydraulic cylinders, and particularly relates to a buffering protection hydraulic cylinder.

Background

The hydraulic cylinder is a hydraulic executive component which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion); when the device is used for realizing reciprocating motion, a speed reducing device can be omitted, and a transmission annular gap is not formed, so that the device is stable in motion, and is widely applied to hydraulic systems of various machines;

the output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between two sides of the effective area of the piston; the hydraulic cylinder basically consists of a cylinder barrel, a cylinder cover, a piston rod, a sealing device, a buffer device and an exhaust device;

the prior art (application number: CN201720379435.0, a hydraulic buffer cylinder) adopts a gasket to perform the contact buffer protection of the movable end of the piston; the piston moves in a straight reciprocating manner in the hydraulic cylinder, hydraulic oil is used as power, a sealing part of the piston of the hydraulic press is in flexible contact with the cylinder wall, the piston can incline under larger pressure, the moment is larger than the overturning moment of the piston, and the eccentric wear phenomenon can occur when the piston moves along the hydraulic cylinder wall.

Disclosure of Invention

First, the technical problem to be solved

In order to overcome the defects in the prior art, a buffering protection hydraulic cylinder is provided so as to solve the problems provided by the background art.

(II) technical scheme

The utility model is realized by the following technical scheme: the utility model provides a buffering protection hydraulic cylinder which comprises a cylinder body, wherein a cylinder cavity is formed in the inner side of the cylinder body, one cylinder end of the cylinder body is penetrated by a piston rod in a sealing manner, a piston is attached to the inner side of the cylinder cavity in a movable manner, and the piston is fixedly connected with the piston rod;

the cylinder body and the outer side of the piston are fixedly provided with a protection component;

the protection component comprises a convex ring, the periphery of the convex ring is fixedly attached to a first magnetic ring, the convex ring is provided with two groups of convex rings and is fixedly arranged at two opposite ends of the piston in a movable mode, one ring end of the convex ring is fixedly attached to the piston, a cushion layer is fixedly arranged at the other end of the convex ring, a second magnetic ring is fixedly arranged on the outer side of the cylinder body and is arranged on the outer side of the first magnetic ring, and the inner side of the second magnetic ring is identical to the magnetic pole on the outer side of the first magnetic ring.

Further, the outside of the cylinder body is provided with oil holes which are communicated with the cylinder cavity, and the oil holes are provided with two groups and are respectively arranged at two sides of the piston.

Further, the cushion layer is soft nitrile rubber.

Further, an annular gap is formed between the periphery of the first magnetic ring and the inner wall of the cylinder cavity.

(III) beneficial effects

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

through setting up bulge loop 51 at piston 4 activity's both ends to set up first magnetic ring 52 at bulge loop 51 periphery, cylinder body 1 outside sets up second magnetic ring 54, and second magnetic ring 54 locates the outside side of first magnetic ring 52, and the magnetic pole of second magnetic ring 54 inboard and first magnetic ring 52 outside is the same, makes to form repulsion between first magnetic ring 52 and the second magnetic ring 54, with this axial stability when improving piston 4 displacement, reduces the degree of bias greatly.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of the structure of the present utility model;

in the figure: the cylinder body-1, the cylinder cavity-2, the piston rod-3, the piston-4, the protection component-5, the convex ring-51, the first magnetic ring-52, the cushion layer-53 and the second magnetic ring-54.

Detailed Description

Referring to fig. 1, the present utility model provides a buffering protection hydraulic cylinder: comprises a cylinder body 1, which is a shell cylinder of a hydraulic cylinder;

the inner side of the cylinder body 1 is provided with a cylinder cavity 2, wherein an oil hole is arranged on the outer side of the cylinder body 1 and is communicated with the cylinder cavity 2 for the circulation of hydraulic oil;

one cylinder end of the cylinder body 1 is sealed and penetrated by a piston rod 3 { as shown in the figure, an end cover for sealing a cylinder opening is arranged at the cylinder end of the cylinder body 1, and the middle part of the cylinder body is sealed and penetrated by the piston rod 3 (is of an existing structure);

the inner side of the cylinder cavity 2 is attached with a piston 4 movably and is fixedly connected with the piston rod 3, two groups of oil holes are arranged on two sides of the piston 4 respectively, hydraulic oil is introduced into the cylinder cavity 2 through the oil holes to push the piston 4 to slide left and right;

referring to fig. 1, a protection component 5 is fixedly arranged on the outer sides of a cylinder body 1 and a piston 4;

the protection assembly 5 comprises a convex ring 51 (the material of which is the same as that of the existing cylinder body 1);

the convex rings 51 are provided with two groups and are oppositely and fixedly arranged at two movable opposite ends of the piston 4, one ring end of each convex ring 51 is fixedly attached to the piston 4, the other end of each convex ring is fixedly provided with a cushion layer 53, and the cushion layer 53 is used for movably contacting with two movable ends at the inner side of the cylinder cavity 2 to perform buffer protection;

wherein, the cushion layer 53 is soft nitrile rubber, which has excellent oil resistance, high wear resistance, good heat resistance and strong adhesive force; soft nitrile rubber is adopted, so that the buffer protection is stronger;

the periphery of the convex ring 51 is fixedly attached with the first magnetic ring 52, the outer side of the cylinder body 1 is fixedly provided with the second magnetic ring 54, the second magnetic ring 54 is arranged on the outer side of the first magnetic ring 52, and the inner side of the second magnetic ring 54 and the outer side of the first magnetic ring 52 have the same magnetic poles, so that repulsive force is formed between the first magnetic ring 52 and the second magnetic ring 54 according to the above, the axial stability of the piston 4 during displacement is improved, and the eccentric wear phenomenon is greatly reduced.

The first magnetic ring 52 and the second magnetic ring 54 are both magnets.

The periphery of the first magnetic ring 52 and the inner wall of the cylinder cavity 2 form an annular gap (as shown in the figure, the annular gap is arranged around the periphery of the first magnetic ring 52), so that the first magnetic ring 52 is protected, an oil storage space is uniformly formed (oil is conveniently introduced when the cushion layer 53 contacts the movable end of the cylinder cavity 2), and the practicability is high.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The buffer protection hydraulic cylinder comprises a cylinder body (1), wherein a cylinder cavity (2) is arranged on the inner side of the cylinder body (1), one cylinder end of the cylinder body (1) is penetrated by a piston rod (3) in a sealing way, a piston (4) is attached to the inner side of the cylinder cavity (2) in a movable manner, and the piston is fixedly connected with the piston rod (3);

the method is characterized in that: the outer sides of the cylinder body (1) and the piston (4) are fixedly provided with a protection component (5);

the protection component (5) comprises a convex ring (51), a first magnetic ring (52) is fixedly attached to the periphery of the convex ring (51), two groups of convex rings (51) are arranged and are fixedly arranged at two opposite movable ends of the piston (4) relatively, one ring end of each convex ring (51) is fixedly attached to the piston (4), a cushion layer (53) is fixedly arranged at the other end of each convex ring, a second magnetic ring (54) is fixedly arranged on the outer side of the cylinder body (1) and is arranged on the outer side of the first magnetic ring (52), and the inner side of the second magnetic ring (54) is identical to the magnetic pole on the outer side of the first magnetic ring (52).

2. The buffer protection hydraulic cylinder of claim 1, wherein: the outside of the cylinder body (1) is provided with oil holes which are communicated with the cylinder cavity (2), and the oil holes are provided with two groups and are respectively arranged at two sides of the piston (4).

3. The buffer protection hydraulic cylinder of claim 1, wherein: the cushion layer (53) is soft nitrile rubber.

4. The buffer protection hydraulic cylinder of claim 1, wherein: the periphery of the first magnetic ring (52) and the inner wall of the cylinder cavity (2) form an annular gap.