CN209959605U

CN209959605U - Hydraulic cylinder

Info

Publication number: CN209959605U
Application number: CN201920368908.6U
Authority: CN
Inventors: 刘兆平
Original assignee: Jiangsu Lixueda Hydraulic Co Ltd
Current assignee: Jiangsu Lixueda Hydraulic Co Ltd
Priority date: 2019-03-21
Filing date: 2019-03-21
Publication date: 2020-01-17
Anticipated expiration: 2029-03-21

Abstract

The utility model relates to a hydraulic 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 hydraulic cylinder is characterized in that a check ring and a check ring fixing piece are sleeved and connected between the left side of the piston rod and the piston, the check ring is located on the left side of the check ring fixing piece, a GREEN ring is arranged between the piston and the inner wall of the cylinder body, a Y-shaped ring and an O-shaped ring are arranged between the sliding sleeve and the piston rod, the Y-shaped ring and the O-shaped ring are overlapped and connected, the cylinder body is provided with an oil outlet, the oil outlet is connected to a rodless cavity of the cylinder body, and the oil outlet is connected with. The utility model discloses piston processing is convenient, does not need processing slot and screw thread etc. to fasten, and sealing performance is good between sliding sleeve and the piston rod, and the life cycle is long, and dust impurity is difficult to get into, and the oil-out sets up hydraulically controlled check valve, increases oil-out 11's tightness, makes the long-time pressurize of oil circuit.

Description

Hydraulic cylinder

Technical Field

The utility model relates to the field of hydraulic techniques, especially, relate to a pneumatic cylinder.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion or swinging motion. When the hydraulic cylinder is used for carrying out reciprocating motion, a speed reducing device is not needed, a transmission gap is not formed, and the motion is stable, so that the hydraulic cylinder is widely applied to hydraulic systems of various machines.

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 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 cylinder are high. Most wood processing presses adopt more conventional plunger type hydraulic cylinders, and during the frequent and quick opening and closing use process of the hydraulic cylinders, oil leakage can occur, the working efficiency of the hydraulic 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 cylinders need to be improved.

Disclosure of Invention

The utility model aims at overcoming the defect of prior art, providing a pneumatic cylinder suitable for can realize that hot pressing wainscot machine is stable quick closed and can not leak.

Realize the utility model discloses the technical scheme of purpose is: a hydraulic 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 hydraulic cylinder is characterized in that a check ring and a check ring fixing piece are sleeved and connected between the left side of the piston rod and the piston, the check ring is located on the left side of the check ring fixing piece, a GREEN ring is arranged between the piston and the inner wall of the cylinder body, a Y-shaped ring and an O-shaped ring are arranged between the sliding sleeve and the piston rod, the Y-shaped ring and the O-shaped ring are overlapped and connected, the cylinder body is provided with an oil outlet, the oil outlet is connected to a rodless cavity of the cylinder body, and the oil outlet is connected with.

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 Glae ring.

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.

According to the technical scheme, the Y-shaped ring is provided with the concave groove, and the upper side of the O-shaped ring is connected with the concave groove of the Y-shaped ring in an overlapping mode.

According to the technical scheme, the lowest side of the Y-shaped ring and the lower side of the O-shaped ring are located on the same horizontal plane.

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 discloses piston processing is convenient, does not need processing slot and screw thread etc. to fasten, and sealing performance is good between sliding sleeve and the piston rod, and the life cycle is long, and dust impurity is difficult to get into, and the oil-out sets up hydraulically controlled check valve, increases oil-out 11's tightness, makes 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 view of the Y-shaped ring and the O-shaped ring of the present invention.

In the figure: 1-cylinder body, 2-sliding sleeve, 3-piston rod, 4-piston, 11-oil outlet, 21-Y-shaped ring, 22-O-shaped ring, 23-dustproof pad, 24-connecting flange, 211-concave groove, 41-check ring, 42-check ring fixing piece, 43-Glare ring, 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, the present invention has a hydraulic cylinder, which has 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 member 42 are sleeved and connected between the left side of the piston rod 3 and the piston 4, the check ring 41 is positioned at the left side of the check ring fixing member 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, a Glare ring 43 is arranged between the piston 4 and the inner wall of the cylinder body 1, the friction force is low, the crawling is avoided, the starting force is small, the high pressure is resisted, a Y-shaped ring 21 and an O-shaped ring 22 are arranged between the sliding sleeve 2 and the piston rod 3, the Y-shaped ring 21 and the O-shaped ring 22 are overlapped and connected, the oil leakage at the connection part of the sliding sleeve 2 and the piston rod 3 can be effectively prevented by the Y-shaped ring 21 and the O-shaped ring 22, the sealing effect is good, the cylinder body 1 is provided with an oil outlet 11, the oil outlet, the pressure of the oil path is maintained for a long time.

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 GREEN 43, and the guide sleeves 44 ensure the coaxiality of the piston rod and the cylinder barrel and play a role in supporting.

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.

Referring to fig. 2, the Y-shaped ring 21 has a concave groove 211, and the upper side of the O-shaped ring 22 is connected with the concave groove 211 of the Y-shaped ring 21 in an overlapping manner, so that the installation is convenient and the connection is tight.

The lowest side of the Y-shaped ring 21 and the lower side of the O-shaped ring 22 are positioned on the same horizontal plane, and the lowest side of the Y-shaped ring 21 and the lower side of the O-shaped ring 22 simultaneously play a role in sealing.

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

1. A hydraulic 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: check ring (41) and 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 located on the left side of the check ring fixing piece (42), a Glare ring (43) is arranged between the piston (4) and the inner wall of the cylinder body (1), a Y-shaped ring (21) and an O-shaped ring (22) are arranged between the sliding sleeve (2) and the piston rod (3), the Y-shaped ring (21) is overlapped and connected with the O-shaped ring (22), the cylinder body (1) is provided with an oil outlet (11), the oil outlet (11) is connected with a rodless cavity of the cylinder body (1), and the oil outlet (11) is connected with a hydraulic control one-way valve (5).

2. A hydraulic cylinder according to 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 GREEN ring (43).

3. A hydraulic cylinder according to 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 hydraulic cylinder according to 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 hydraulic cylinder according to claim 1, wherein: the Y-shaped ring (21) is provided with a concave groove (211), and the upper side of the O-shaped ring (22) is connected with the concave groove (211) of the Y-shaped ring (21) in an overlapping mode.

6. A hydraulic cylinder according to claim 5, wherein: the lowest side of the Y-shaped ring (21) and the lower side of the O-shaped ring (22) are positioned on the same horizontal plane.

7. A hydraulic cylinder according to claim 5, wherein: the joint of the sliding sleeve (2) and the piston rod (3) is also provided with a dustproof pad (23).

8. A hydraulic cylinder according to claim 1, wherein: the sliding sleeve (2) is also provided with a connecting flange (24).