CN210290346U

CN210290346U - Dustproof hydraulic oil cylinder

Info

Publication number: CN210290346U
Application number: CN201921220038.4U
Authority: CN
Inventors: 胡正顺; 胡正慎
Original assignee: Wuxi Jufan Technology Co ltd
Current assignee: Wuxi Jufan Technology Co ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-04-10
Anticipated expiration: 2029-07-31

Abstract

The utility model belongs to the technical field of hydraulic cylinder, a dustproof hydraulic cylinder is related to, penetrate the piston rod of cylinder body and seal in cylinder body open-ended bush including hollow cylinder body, part, the cylinder body is equipped with the dirt proof boot outward, the one end of dirt proof boot is fixed in the piston rod exposes the part of cylinder body, and the other end is fixed in on the bush. This hydraulic cylinder can block dust and impurity outside the hydro-cylinder effectively through the installation dirt proof boot, guarantees the cleanliness of fluid, has prolonged the life of hydro-cylinder.

Description

Dustproof hydraulic oil cylinder

Technical Field

The utility model relates to a hydraulic cylinder technical field, in particular to dustproof hydraulic cylinder.

Background

The hydraulic oil cylinder is an execution element with wide application, and the figure of the hydraulic oil cylinder can be seen in all industries of the society. Traditional hydraulic cylinder can set up a dust sealing in the cylinder body for prevent inside dust and the impurity entering hydro-cylinder. Some hydraulic cylinders have quite severe service environments, and some harmful substances and tiny impurities are difficult to avoid entering the hydraulic cylinders in severe environments. The harmful substances and the tiny impurities can affect the cleanliness of oil, and seriously can also damage a sealing element in the oil cylinder, thereby causing the leakage of the oil cylinder.

Therefore, in order to avoid the above problems, it is necessary to provide a dustproof hydraulic cylinder to overcome the problems at present.

Disclosure of Invention

The utility model discloses a main aim at provides a dustproof hydraulic cylinder can prevent that harmful substance and small impurity from getting into that hydraulic cylinder is inside to arouse fluid pollution and hydro-cylinder leakage problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose: a dustproof hydraulic oil cylinder comprises a hollow cylinder body, a piston rod and a bushing, wherein part of the piston rod penetrates into the cylinder body, the bushing is sealed at an opening of the cylinder body, a dustproof sleeve is arranged outside the cylinder body, one end of the dustproof sleeve is fixed to the part, exposed out of the cylinder body, of the piston rod, and the other end of the dustproof sleeve is fixed to the bushing.

Specifically, the dustproof sleeve is made of rubber with a corrugated structure.

Specifically, the dust-proof sleeve is locked on the piston rod through a hoop.

Specifically, the dust-proof sleeve is locked on the bushing through a hoop.

Furthermore, the hoop comprises a flexible strip-shaped part and a locking screw, the strip-shaped part is provided with a fixed end through which the locking screw passes and a free end through which the locking screw can pass, and the strip-shaped part is provided with a plurality of slotted holes; when the locking screw is tightened, the spiral line on the locking screw is matched with the slotted hole to tighten the strip-shaped part.

Compared with the prior art, the utility model discloses technical scheme's beneficial effect is:

this hydraulic cylinder can block dust and impurity outside the hydro-cylinder effectively through the installation dirt proof boot, guarantees the cleanliness of fluid, has prolonged the life of hydro-cylinder.

Drawings

FIG. 1 is a partial cross-sectional view of an exemplary dustproof hydraulic ram;

FIG. 2 is a front perspective view of the clip;

fig. 3 is a left side view of the clip.

Labeled as:

1-a cylinder body;

2-a piston rod;

3-a bushing;

4, a dustproof sleeve;

5 a-first clip, 5 b-second clip, 51-band, 511-fixed end, 512-free end, 513-slotted hole, 52-locking screw.

Detailed Description

The present invention will be described in further detail with reference to specific examples.

Example (b):

as shown in fig. 1, the dustproof hydraulic oil cylinder comprises a hollow cylinder body 1, a piston rod 2 partially penetrating into the cylinder body 1 and a bushing 3 sealed at an opening of the cylinder body 1, wherein a dustproof sleeve 4 is arranged outside the cylinder body 1, one end of the dustproof sleeve 4 is fixed on the part of the piston rod 2 exposed out of the cylinder body 1, and the other end of the dustproof sleeve is fixed on the bushing 3. The size of the left opening and the right opening of the dustproof sleeve 4 is matched with the outer diameters of the piston rod 2 and the bush 3. No matter how the piston rod 2 stretches, the dustproof sleeve 4 can block the passage from the outside to the opening of the cylinder body 1, so that harmful substances and small impurities can be blocked outside the oil cylinder, the cleanliness of oil is guaranteed, and the sealing element in the oil cylinder is prevented from being damaged, so that the leakage of the oil cylinder is avoided, and the service life of the oil cylinder is prolonged.

As shown in fig. 1, the dust boot 4 is made of rubber of a bellows structure. The dustproof sleeve 4 has certain tensile property and can tightly hold the contact surface; and the dustproof sleeve 4 has certain structural strength, so that the axial deformation is in a controllable range.

As shown in fig. 1 to 3, the dust boot 4 is locked to the piston rod 2 by a first clip 5a, and the dust boot 4 is locked to the bush 3 by a second clip 5 b. The dust cover 4 and the piston rod 2 and the bush 3 also have the leakproofness problem, and the dust cover 4 can hold the piston rod 2 and the bush 3 tightly through the

clamps

5a and 5b to realize the sealing of the contact surface.

As shown in fig. 2 and 3, the

clips

5a, 5b include a flexible band 51 and a locking screw 52, the band 51 has a fixed end 511 for passing the locking screw 52 therethrough and a free end 512 capable of passing the fixed end therethrough, and the band 51 is provided with a plurality of slots 513; when the locking screw 52 is tightened, the helical line on the locking screw 52 will match the slot 513 to tighten the band 51. When the dust cap 4 is fixed, the strip portion 51 surrounds the outer side of the port of the dust cap 4, and when the straight-line or cross-line is used for clockwise rotating the straight-line or cross-line groove formed in the head of the locking screw 52, the locking screw 52 is screwed, the slotted hole 513 enables the

clamps

5a and 5b to be small under the action of the thread line of the locking screw 52 and hold the port of the dust cap 4 tightly, and thus the dust cap 4 is firmly fixed on the piston rod 2 or the bush 3.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. The utility model provides a dustproof hydraulic cylinder, includes that hollow cylinder body, part penetrate the piston rod of cylinder body and seal in cylinder body open-ended bush, its characterized in that: the cylinder body is externally provided with a dustproof sleeve, one end of the dustproof sleeve is fixed on the part of the piston rod, which is exposed out of the cylinder body, and the other end of the dustproof sleeve is fixed on the bushing.

2. The dustproof hydraulic ram of claim 1, wherein: the dustproof sleeve is made of rubber with a corrugated structure.

3. The dustproof hydraulic ram of claim 1, wherein: the dustproof sleeve is fixedly locked on the piston rod through a hoop.

4. The dustproof hydraulic ram of claim 1, wherein: the dustproof sleeve is fixedly locked on the bushing through a hoop.

5. A dust-proof hydraulic ram according to claim 3 or 4, characterised in that: the clamp comprises a flexible strip-shaped part and a locking screw, the strip-shaped part is provided with a fixed end through which the locking screw passes and a free end through which the locking screw can pass, and the strip-shaped part is provided with a plurality of slotted holes; when the locking screw is tightened, the spiral line on the locking screw is matched with the slotted hole to tighten the strip-shaped part.