CN209800407U - Anti-leakage hydraulic oil cylinder - Google Patents

Abstract

The utility model relates to a leakage-proof hydraulic oil cylinder, which is provided with a cylinder body, a sliding sleeve, a piston rod and a piston, wherein the left side of the piston rod extends into the cylinder body through the sliding sleeve and is connected with the piston; the left side of piston rod with the retaining ring and retaining ring mounting have been tied between the piston, are equipped with the anti-loosening piece, the piston with be equipped with the steckel between the inner wall of cylinder body, the sliding sleeve with be equipped with seal assembly between the piston rod, be equipped with sealed pillar, sealed pillar is equipped with the strip convex part, the cylinder body is connected with the hydraulically controlled check valve. The utility model has the advantages of convenient processing, convenient installation, looseness prevention and skid prevention; effectively improve piston rod life and sealed effect among the pneumatic cylinder, prevent that the piston rod from the waste of fluid that the leakage of fluid leads to and reduce the work efficiency of pneumatic cylinder in reciprocating motion process, set up the hydraulically controlled check valve, increase the tightness of oil-out 11, make the long-time pressurize of oil circuit.

Description

Anti-leakage hydraulic oil cylinder

Technical Field

The utility model relates to a hydro-cylinder design technical field especially relates to a prevent leaking hydraulic cylinder.

Background

The hydraulic system in the hot-pressing veneering machine needs to stably realize quick closing and pressure maintaining on the hot-pressing plate, and the heating and curing of the glue during veneering are finished in the pressure maintaining stage, so the closing speed is high, which is beneficial to the process and the efficiency, on one hand, the heating of the plate blank under non-pressure can be reduced, the excessive water loss on the surface of the plate blank is prevented, the warping is prevented, meanwhile, the pre-curing of the glue is also prevented, and the veneering quality is reduced; on the other hand, the auxiliary time can be shortened, and the productivity of the press can be improved.

The hydraulic oil cylinder is used as the core part of a hydraulic system in the hot-pressing veneering machine and bears impact pressure at a quick opening and closing speed, so that the requirements on the structural quality and the sealing performance of the hydraulic oil cylinder are high. Most wood processing presses adopt more conventional plunger type hydraulic oil cylinders, and during the frequent and quick opening and closing use process of the hydraulic oil cylinders, oil leakage can occur, the working efficiency of the hydraulic oil cylinders is reduced by light persons, the performance of the whole hot-pressing veneering machine is reduced by heavy persons, and the whole hot-pressing veneering machine cannot work even under pressure, so the existing hydraulic oil cylinders need to be improved.

Disclosure of Invention

The utility model aims at overcoming the defect of prior art, providing a prevent leaking hydraulic cylinder.

Realize the utility model discloses the technical scheme of purpose is: a leakage-proof hydraulic oil cylinder is provided with a cylinder body, a sliding sleeve, a piston rod and a piston, wherein the left side of the piston rod extends into the cylinder body through the sliding sleeve and is connected with the piston; the left side of piston rod with retaining ring and retaining ring mounting have been tied between the piston, the retaining ring is located the left side of retaining ring mounting, the retaining ring mounting with be equipped with anti-loosening member between the piston, the piston with be equipped with the steckel between the inner wall of cylinder body, the sliding sleeve with be equipped with seal assembly between the piston rod, seal assembly towards the one side bilateral symmetry of piston rod is equipped with sealed pillar, evenly be equipped with four strip convex parts between the sealed pillar, the cylinder body has the oil-out, the oil-out connect in the rodless chamber of cylinder body, the oil-out is connected with the hydraulically controlled check valve.

According to the technical scheme, the guide sleeves are arranged between the piston and the inner wall of the cylinder body and are symmetrically arranged on the left side and the right side of the Stent seal.

According to the technical scheme, the connecting part between the left side of the piston rod and the piston is in the shape of a convex, the convex part of the shape of the convex is the same as the transverse length of the check ring, and the residual part of the shape of the convex is the same as the transverse length of the check ring fixing piece.

According to the technical scheme, the maximum outer diameter of the retainer ring is smaller than the maximum outer diameter of the retainer ring fixing piece.

In the technical scheme, the included angle between the sealing support and one surface of the sealing assembly facing the piston rod is 135 degrees.

According to the technical scheme, the square sealing element is arranged in the middle of one surface, back to the piston rod, of the sealing assembly.

According to the technical scheme, the sealing assembly is of an integrated structure made of tetrafluoroethylene-propylene rubber.

According to the technical scheme, the joint of the sliding sleeve and the piston rod is also provided with a dustproof pad.

According to the technical scheme, the sliding sleeve is further provided with a connecting flange.

After the technical scheme is adopted, the utility model discloses following positive effect has:

The utility model has the advantages of convenient processing, convenient installation, looseness prevention and skid prevention; effectively improve piston rod life and sealed effect among the pneumatic cylinder, prevent that the piston rod from the waste of fluid that the leakage of fluid leads to and reduce the work efficiency of pneumatic cylinder in reciprocating motion process, set up the hydraulically controlled check valve, increase the tightness of oil-out 11, make the long-time pressurize of oil circuit.

Drawings

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which

Fig. 1 is a schematic structural view of the present invention;

Fig. 2 is a schematic structural diagram of the sealing assembly of the present invention.

In the figure: 1-cylinder body, 2-sliding sleeve, 3-piston rod, 4-piston, 11-oil outlet, 21-sealing component, 22-dustproof pad, 23-connecting flange, 211-concave groove, 41-check ring, 42-check ring fixing component, 43-steckel seal, 44-guide sleeve and 5-hydraulic control one-way valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

referring to fig. 1 and 2, the utility model has a leak-proof hydraulic cylinder, which comprises a cylinder body 1, a sliding sleeve 2, a piston rod 3 and a piston 4, wherein the left side of the piston rod 3 extends into the cylinder body 1 through the sliding sleeve 2 and is connected with the piston 4; a check ring 41 and a check ring fixing piece 42 are sleeved and connected between the left side of the piston rod 3 and the piston 4, the check ring 41 is positioned on the left side of the check ring fixing piece 42, the piston rod 3 is not required to be fastened by processing grooves, threads and the like, so that the processing difficulty of the piston rod 3 is reduced, an anti-loosening piece 45 is arranged between the check ring fixing piece 42 and the piston 4, the anti-loosening piece 45 can be an anti-loosening screw, the check ring fixing piece 42 is prevented from moving and loosening towards the piston rod 3, a Stent seal 43 is arranged between the piston 4 and the inner wall of the cylinder body 1, the friction resistance is low, and the; sliding sleeve 2 with be equipped with seal assembly 21 between the piston rod 3, seal assembly 21 towards the one side bilateral symmetry of piston rod 3 is equipped with sealed pillar 211, and sealed pillar 211 plays main sealing to piston rod 3, evenly be equipped with four strip convex parts 212 between the sealed pillar 211, strip convex part 212 is pressed to play the auxiliary action to piston rod 3's sealed when the same horizontal plane with strip convex part 212 at sealed pillar 211, cylinder body 1 has oil-out 11, oil-out 11 connect in cylinder body 1's no pole chamber, oil-out 11 is connected with hydraulic control check valve 5, increases oil-out 11's tightness, makes the long-time pressurize of oil circuit.

And a guide sleeve 44 is arranged between the piston 4 and the inner wall of the cylinder body 1, the guide sleeves 44 are symmetrically arranged at the left side and the right side of the Stent seal 43, and the guide sleeves 44 ensure the coaxiality of the piston rod and the cylinder barrel and play a supporting role.

The left side of the piston rod 3 is connected with the piston 4 in a convex shape, the convex part of the convex shape is the same as the transverse length of the retainer ring 41, the rest part of the convex shape is the same as the transverse length of the retainer ring fixing piece 42, and the left side of the piston rod 3 is tightly attached and connected with the piston 4 and is fixed by the retainer ring 41 and the retainer ring fixing piece 42.

The maximum outer diameter of the retainer ring 41 is smaller than the maximum outer diameter of the retainer ring fixing member 42, and the retainer ring 41 is firmly fixed to the left side of the retainer ring fixing member 42.

The angle between the sealing strut 211 and the face of the sealing assembly 21 facing the piston rod 3 is 135 °.

The middle of one surface of the sealing component 21, which faces away from the piston rod 3, is provided with a square sealing element 213, so that the sealing component can be conveniently installed in a corresponding groove of the sliding sleeve 2.

The sealing assembly 21 is of an integrated structure made of tetrafluoroethylene-propylene rubber, is high-temperature resistant and oil resistant, and is stable in structure.

Sliding sleeve 2 with the junction of piston rod 3 still is equipped with dustproof pad 23, can effectually prevent that dust impurity on the piston rod etc. from getting into 1 pollutes hydraulic oil of cylinder body, and the wearing and tearing 1 inner wall of cylinder body reduces the life of pneumatic cylinder.

The sliding sleeve 2 is also provided with a connecting flange 24, so that the installation and connection are convenient.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (9)

1. A leakage-proof hydraulic oil cylinder is provided with a cylinder body (1), a sliding sleeve (2), a piston rod (3) and a piston (4), wherein the left side of the piston rod (3) extends into the cylinder body (1) through the sliding sleeve (2) and is connected with the piston (4); the method is characterized in that: a retainer ring (41) and a retainer ring fixing piece (42) are sleeved between the left side of the piston rod (3) and the piston (4), the retainer ring (41) is positioned at the left side of the retainer ring fixing piece (42), an anti-loosening piece (45) is arranged between the retainer ring fixing piece (42) and the piston (4), a Stent seal (43) is arranged between the piston (4) and the inner wall of the cylinder body (1), a sealing component (21) is arranged between the sliding sleeve (2) and the piston rod (3), one surface of the sealing component (21) facing the piston rod (3) is symmetrically provided with sealing struts (211) left and right, four strip-shaped convex parts (212) are uniformly arranged between the sealing pillars (211), the cylinder body (1) is provided with an oil outlet (11), the oil outlet (11) is connected to the rodless cavity of the cylinder body (1), and the oil outlet (11) is connected with a hydraulic control one-way valve (5).

2. A leak-proof hydraulic ram as claimed in claim 1 wherein: and a guide sleeve (44) is arranged between the piston (4) and the inner wall of the cylinder body (1), and the guide sleeve (44) is symmetrically arranged at the left side and the right side of the Stent seal (43).

3. A leak-proof hydraulic ram as claimed in claim 1 wherein: the left side of the piston rod (3) is connected with the piston (4) in a convex shape, the convex part of the convex shape is the same as the transverse length of the check ring (41), and the residual part of the convex shape is the same as the transverse length of the check ring fixing piece (42).

4. A leak-proof hydraulic ram as claimed in claim 3 wherein: the maximum outer diameter of the retainer ring (41) is smaller than the maximum outer diameter of the retainer ring holder (42).

5. A leak-proof hydraulic ram as claimed in claim 1 wherein: the included angle between the sealing support column (211) and one surface, facing the piston rod (3), of the sealing assembly (21) is 135 degrees.

6. a leak-proof hydraulic ram as claimed in claim 1 wherein: the middle of one surface, back to the piston rod (3), of the sealing component (21) is provided with a square sealing element (213).

7. A leak-proof hydraulic ram as claimed in claim 1 wherein: the sealing component (21) is of an integrated structure made of tetrafluoroethylene-propylene rubber.

8. A leak-proof hydraulic ram as claimed in claim 1 wherein: the joint of the sliding sleeve (2) and the piston rod (3) is also provided with a dustproof pad (22).

9. A leak-proof hydraulic ram as claimed in claim 1 wherein: the sliding sleeve (2) is also provided with a connecting flange (23).