CN214742443U - Automatic oil supplementing hydraulic cylinder - Google Patents

Abstract

The utility model discloses an automatic oil-supplementing hydraulic cylinder, which comprises a cylinder body, a piston rod and a sealing component, wherein an automatic oil-supplementing structure is also arranged in the cylinder body; the automatic oil supplementing structure comprises a push block, a sliding block assembly and a first spring, wherein the sliding block assembly is slidably arranged on the inner bottom wall of the cylinder body; the bottom end of the piston rod is fixedly connected with a top block, an oil storage groove is formed in the inner bottom wall of the cylinder body, and the piston rod can abut against the sliding block assembly when descending and enables the sliding block assembly to block a notch of the oil storage groove; the utility model discloses be equipped with automatic oil supplementing structure, when the piston rod shrink, the kicking block is contradicted compression spring one on the ejector pad, and after external force disappears, spring one is because of self elasticity with piston rod jack-up, this part of jack-up is the vacuum area, leads to pressure step-down in the cylinder body, and hydraulic oil just can be automatic gets into in the cylinder body through the glib talker, realizes automatic oil supplementing function.

Description

Automatic oil supplementing hydraulic cylinder

Technical Field

The utility model relates to an automatic fluid pressure cylinder mends.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or swinging motion); it has simple structure and reliable operation. When the reciprocating motion is realized by using the reciprocating motion device, a speed reducing device can be omitted, no transmission gap exists, and the reciprocating motion is stable, so that the reciprocating motion device is widely applied to hydraulic systems of various machines;

in the prior art, cylinder bodies of some oil cylinders are large, a large amount of oil needs to be injected into the cylinder bodies for jacking, at present, oil supplement of the hydraulic oil cylinders is generally carried out by using oil pump motors, when a large amount of hydraulic oil needs to be quickly and efficiently used, a plurality of groups of oil pump motors are wasted and uneconomical, and therefore the hydraulic oil cylinders capable of automatically supplementing oil need to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model provides an automatic mend oily pneumatic cylinder can solve the hydro-cylinder among the prior art and do not possess the problem of automatic oil supplementing function.

An automatic oil supplementing hydraulic cylinder comprises a cylinder body, a piston rod and a sealing assembly, wherein an automatic oil supplementing structure is further arranged in the cylinder body;

the automatic oil supplementing structure comprises a push block, a sliding block assembly and a first spring, wherein the sliding block assembly is slidably arranged on the inner bottom wall of the cylinder body;

a groove capable of accommodating the push block is formed in the bottom wall of the cylinder body, and the first spring is installed in the groove;

the bottom end of the piston rod is fixedly connected with a top block, and the top block is positioned right above the push block;

an oil storage tank is further formed in the inner bottom wall of the cylinder body, and an oil injection nozzle on the cylinder body is communicated with the oil storage tank;

and when the piston rod descends, the piston rod can abut against the sliding block assembly and enables the sliding block assembly to block the notch of the oil storage tank.

Preferably, the sliding block assembly comprises a sliding block and a second spring, the sliding block is slidably arranged on the inner bottom wall of the cylinder body, a sliding groove is formed in the inner bottom wall of the cylinder body, a part of the sliding block is located in the sliding groove, and the second spring is installed in the sliding groove and abuts against the sliding block.

Preferably, the oil storage tank is annular, and two sliding block assemblies are symmetrically arranged in the cylinder body;

the top block is a conical block;

the one end of slider has been seted up the direction inclined plane, the other end is connected with cowl, two the baffle can block the notch of oil storage tank.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model is provided with an automatic oil supplementing structure, when the piston rod is contracted, the ejector block is abutted against the push block to compress the first spring, when the external force disappears, the first spring jacks up the piston rod due to self elasticity, the part which is jacked up is a vacuum area, so that the pressure in the cylinder body becomes low, hydraulic oil can automatically enter the cylinder body through the oil injection nozzle, and the automatic oil supplementing function is realized;

still be equipped with sliding block set spare, when the piston rod shrink, the slider can progressively block the oil storage tank to the increase resistance plays the cushioning effect, effectively avoids piston rod and cylinder body collision and produces the condition emergence of cylinder body deformation, improves life.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

fig. 2 is a partial sectional view of the automatic oil supply structure of the present invention.

Description of reference numerals:

1-cylinder body, 2-piston rod, 3-push block, 4-spring I, 5-groove, 6-top block, 7-oil storage tank, 8-slide block, 9-spring II, 10-chute, 11-guide inclined plane and 12-baffle.

Detailed Description

In the following, an embodiment of the present invention will be described in detail with reference to the drawings, but it should be understood that the scope of the present invention is not limited by the embodiment.

As shown in fig. 1 to 2, an automatic oil-supplementing hydraulic cylinder provided in the embodiment of the present invention includes a cylinder body 1, a piston rod 2 and a sealing assembly, wherein an automatic oil-supplementing structure is further disposed in the cylinder body 1;

the automatic oil supplementing structure comprises a push block 3, a sliding block assembly which is slidably arranged on the inner bottom wall of the cylinder body 1 and a first spring 4 connected to the lower side of the push block 3;

a groove 5 capable of accommodating the push block 3 is formed in the inner bottom wall of the cylinder body 1, and the first spring 4 is installed in the groove 5;

the bottom end of the piston rod 2 is fixedly connected with a top block 6, and the top block 6 is positioned right above the push block 3;

the top block 6 is a conical block;

when the piston rod 2 retracts, the ejector block 6 is abutted against the ejector block 3, the ejector block 3 is ejected into the groove 5, the spring I4 is compressed,

an oil storage tank 7 is further formed in the inner bottom wall of the cylinder body 1, and an oil injection nozzle on the cylinder body 1 is communicated with the oil storage tank 7;

when the piston rod 2 descends, the piston rod can abut against the sliding block assembly and enables the sliding block assembly to block the notch of the oil storage tank 7;

the sliding block assembly comprises a sliding block 8 and a second spring 9, wherein the sliding block 8 is slidably arranged on the inner bottom wall of the cylinder body 1, a sliding groove 10 is formed in the inner bottom wall of the cylinder body 1, a part of the sliding block 8 is positioned in the sliding groove 10, and the second spring 9 is installed in the sliding groove 10 and abuts against the sliding block 8;

one end of the sliding block 8 is provided with a guide inclined plane 11, the other end of the sliding block is connected with an arc-shaped baffle 12, and the two baffles 12 can block the notch of the oil storage tank 7;

when the piston rod 2 retracts, the top block 6 abuts against the guide inclined planes 11 of the sliding blocks 8, so that the two sliding blocks 8 move, the oil storage tank 7 is gradually blocked by the baffle 12, resistance is increased, and a buffering effect is achieved;

as shown in fig. 2, the oil storage tank 7 is annular, and two slider assemblies are symmetrically arranged in the cylinder block 1.

The working principle is as follows: when the piston rod 2 contracts, the kicking block 6 is contradicted on ejector pad 3 and slider 8, spring 4 is compressed, slider 8 drives baffle 12 and removes, baffle 12 plugs up oil storage tank 7 gradually, thereby the increase resistance, play the cushioning effect, after external force disappears, spring 4 is because of self elasticity with piston rod 2 jack-up, this part of jack-up is the vacuum region, lead to the 1 internal pressure step-down of cylinder body, hydraulic oil just can be automatic through in the filling nozzle gets into cylinder body 1, realize automatic oil supplementing function.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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 description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.

Claims (3)

1. An automatic oil supplementing hydraulic cylinder comprises a cylinder body, a piston rod and a sealing assembly, and is characterized in that an automatic oil supplementing structure is further arranged in the cylinder body;

the automatic oil supplementing structure comprises a push block, a sliding block assembly and a first spring, wherein the sliding block assembly is slidably arranged on the inner bottom wall of the cylinder body;

a groove capable of accommodating the push block is formed in the bottom wall of the cylinder body, and the first spring is installed in the groove;

the bottom end of the piston rod is fixedly connected with a top block, and the top block is positioned right above the push block;

an oil storage tank is further formed in the inner bottom wall of the cylinder body, and an oil injection nozzle on the cylinder body is communicated with the oil storage tank;

and when the piston rod descends, the piston rod can abut against the sliding block assembly and enables the sliding block assembly to block the notch of the oil storage tank.

2. The automatic oil-replenishing hydraulic cylinder as claimed in claim 1, wherein the slide block assembly comprises a slide block slidably disposed on the inner bottom wall of the cylinder body and a second spring, a sliding groove is formed on the inner bottom wall of the cylinder body, a part of the slide block is located in the sliding groove, and the second spring is mounted in the sliding groove and abuts against the slide block.

3. The automatic oil-supplementing hydraulic cylinder as claimed in claim 2, wherein the oil storage tank is annular, and two of the slider assemblies are symmetrically arranged in the cylinder body;

the top block is a conical block;

the one end of slider has been seted up the direction inclined plane, the other end is connected with cowl, two the baffle can block the notch of oil storage tank.

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