CN210317976U - Oil cylinder with built-in gas leakage-proof sealing ring - Google Patents

Abstract

The utility model relates to a related technical field of hydro-cylinder specifically is a built-in gaseous hydro-cylinder of preventing leaking sealing ring, including the cylinder, the inside sliding connection of cylinder has piston rod, and piston rod's surperficial joint has the sealed lantern ring, and the skin weld of the sealed lantern ring has the location slide bar, and the skin weld of location slide bar has the meshing pole, and the inside of installation sliding sleeve is equipped with the meshing groove, and the meshing pole meshing is connected in the inside in meshing groove, and beneficial effect is: when installing hydraulic check valve, put into the inside of cylinder with hydraulic check valve through the installing port, two sets of connecting rods of hydraulic check valve inboard enter into the inside of location loop bar, prescribe a limit to the position of hydraulic check valve, and the closing plate seals the installing port simultaneously, with the inside of multiunit fixing bolt spiro union at cylinder and closing plate, the completion is fixed hydraulic check valve's secondary, simple structure, be convenient for observe and the installation, guarantee the leakproofness, be fit for promoting.

Description

Oil cylinder with built-in gas leakage-proof sealing ring

Technical Field

The utility model relates to a related technical field of hydro-cylinder specifically is a built-in gaseous hydro-cylinder of preventing leaking the sealing ring.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or swinging motion), has simple structure and reliable work, can omit a speed reducer when realizing reciprocating motion, has no transmission clearance and moves stably, and is widely applied to hydraulic systems of various machines.

In the prior art, when the hydraulic oil cylinder is used, sealing protection is generally performed on the hydraulic oil cylinder by adopting a sealing ring, a buffer switch and the like, the sealing structure such as the sealing ring is fixedly arranged on the inner wall of the hydraulic oil cylinder, and when a piston rod works and operates, the sealing ring and other structures are continuously rubbed to generate abrasion, so that the sealing effect is poor, gas in the hydraulic oil cylinder is easy to leak, and the using effect is poor; and hydraulic check valve has generally been welded in the hydraulic cylinder, and hydraulic check valve needs to install through the frock, can't observe the installation, and the sealing washer is crowded bad easily in the installation, takes place to warp, influences the leakproofness, and welded mounting means is not convenient for dismantle it simultaneously, operates complicacy.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a built-in gaseous hydro-cylinder of preventing leaking the sealing ring to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an oil cylinder with a built-in gas leakage-proof sealing ring comprises a cylinder barrel, wherein a piston connecting rod is connected inside the cylinder barrel in a sliding mode, a sealing sleeve ring is clamped on the surface of the piston connecting rod, an inner sealing ring is welded on the inner wall of the sealing sleeve ring and connected to the surface of the piston connecting rod in an extrusion mode, a positioning slide rod is welded on the surface of the sealing sleeve ring and connected to the inside of an installation sliding sleeve in a clamping mode, a meshing rod is meshed and connected to the inside of the installation sliding sleeve, a sliding groove is formed in the inner wall of the cylinder barrel, the installation sliding sleeve is connected to the inside of the sliding groove in a sliding mode, a buffer sleeve is arranged on the inner wall of the cylinder barrel and sleeved on the outer end of the piston connecting rod, a positioning sleeve is welded on the lower surface of the buffer sleeve, a hydraulic check valve is screwed to the inside of the, the welding has the position sleeve pole on the inner wall of cylinder, the connecting rod joint is in the inside of position sleeve pole, and the skin weld of connecting rod has the closing plate, and the inside spiro union of cylinder and closing plate has fixing bolt.

Preferably, the sealing lantern ring and the inner sealing ring are both in a circular ring-shaped structure, the surface of the inner sealing ring is welded on the inner wall of the hollow part of the sealing lantern ring, the inner sealing ring is in an elastic structure, and the inner wall of the inner sealing ring is connected to the surface of the piston connecting rod in an extrusion mode.

Preferably, the location slide bar is circular shaft-like structure, and the installation sliding sleeve is circular frame structure, and the meshing pole all is provided with the multiunit with the meshing groove, and the location slide bar passes through the multiunit meshing pole joint inside the hollow portion of installation sliding sleeve, and the skin weld of installation sliding sleeve has two sets of slide bars, slide bar sliding connection in the inside of slide groove.

Preferably, cushion collar and position sleeve all are ring shape structure, and the hollow part internal diameter of cushion collar is greater than the hollow part internal diameter of position sleeve, and the piston connecting rod comprises three group round bars, and the diameter top-down of three group round bars reduces in proper order, and the extrusion of upper end round bar is connected on the surface of position sleeve, and the mid portion round bar cup joints inside the hollow part of position sleeve.

Preferably, the connecting rods are provided with four groups, the four groups of connecting rods are symmetrically welded on the surfaces of two sides of the hydraulic check valve respectively, the four groups of connecting rods are all in a circular rod-shaped structure, the positioning sleeve rods are provided with two groups, the positioning sleeve rods are in a circular frame structure, the surface of the sunken part of each positioning sleeve rod is welded on the inner wall of the cylinder barrel, and the two groups of connecting rods on the inner side are clamped inside the sunken parts of the positioning sleeve rods respectively.

Preferably, the outside is two sets of the surface welding of connecting rod is on the inner wall of closing plate, and the closing plate comprises two sets of arcs and a set of rectangular plate, and the radian of arc is the same with the radian of cylinder, and the inside of cylinder is equipped with the installing port, and the closing plate spiro union is in the inside of installing port, and fixing bolt is provided with the multiunit, and multiunit fixing bolt spiro union is in the inside of cylinder and closing plate.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the inner sealing ring is of an elastic structure and is extruded on the surface of the piston connecting rod, a closed connecting structure is formed, gas is prevented from leaking, sealing protection is conducted, meanwhile, the sealing lantern ring slides in the cylinder barrel through the positioning slide rod and the mounting slide sleeve, the piston connecting rod moves along with the inner sealing ring, abrasion of the inner sealing ring is avoided, the sealing performance of the inner sealing ring is guaranteed, and the using effect is good;

2. when installing hydraulic check valve, put into the inside of cylinder with hydraulic check valve through the installing port, two sets of connecting rods of hydraulic check valve inboard enter into the inside of location loop bar, prescribe a limit to the position of hydraulic check valve, and the closing plate seals the installing port simultaneously, with the inside of multiunit fixing bolt spiro union at cylinder and closing plate, the completion is fixed hydraulic check valve's secondary, simple structure, be convenient for observe and the installation, guarantee the leakproofness, be fit for promoting.

Drawings

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

FIG. 2 is a schematic view of the explosion structure of the sealing sleeve ring and the buffering sleeve of the present invention;

FIG. 3 is a schematic view of the connection structure of the positioning slide rod and the mounting slide sleeve of the present invention;

FIG. 4 is a schematic view of the connection structure of the hydraulic check valve and the positioning sleeve rod of the present invention;

fig. 5 is an enlarged view of a structure a in fig. 1.

In the figure: the hydraulic cylinder comprises a cylinder barrel 1, a piston connecting rod 2, a sealing lantern ring 3, an inner sealing ring 4, a positioning sliding rod 5, a mounting sliding sleeve 6, a meshing rod 7, a meshing groove 8, a sliding groove 9, a buffer sleeve 10, a positioning sleeve 11, a hydraulic one-way valve 12, a connecting rod 13, a positioning sleeve rod 14, a sealing plate 15 and a fixing bolt 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution: an oil cylinder with a built-in gas leakage-proof sealing ring comprises a cylinder barrel 1, a piston connecting rod 2 is connected inside the cylinder barrel 1 in a sliding mode, a sealing sleeve ring 3 is clamped on the surface of the piston connecting rod 2, an inner sealing ring 4 is welded on the inner wall of the sealing sleeve ring 3, the inner sealing ring 4 is connected to the surface of the piston connecting rod 2 in an extrusion mode, the sealing sleeve ring 3 and the inner sealing ring 4 are both in a circular ring structure, the surface of the inner sealing ring 4 is welded on the inner wall of the hollow part of the sealing sleeve ring 3, the inner sealing ring 4 is in an elastic structure, the inner wall of the inner sealing ring 4 is connected to the surface of the piston connecting rod 2 in an extrusion mode, due to the elastic effect of the inner sealing ring 4, the inner sealing ring 4 is extruded and clamped to the surface of the;

referring to fig. 2 and 3, a positioning slide bar 5 is welded on the surface of a sealing sleeve ring 3, the positioning slide bar 5 is clamped inside a mounting slide sleeve 6, a meshing rod 7 is welded on the surface of the positioning slide bar 5, a meshing groove 8 is arranged inside the mounting slide sleeve 6, the meshing rod 7 is meshed and connected inside the meshing groove 8, a sliding groove 9 is arranged on the inner wall of a cylinder barrel 1, the mounting slide sleeve 6 is slidably connected inside the sliding groove 9, the positioning slide bar 5 is in a circular rod-shaped structure, the mounting slide sleeve 6 is in a circular frame structure, a plurality of groups of meshing rods 7 and meshing grooves 8 are arranged, the positioning slide bar 5 is clamped inside the hollow part of the mounting slide sleeve 6 through the plurality of groups of meshing rods 7, two groups of slide bars are welded on the surface of the mounting slide sleeve 6, the slide bars are slidably connected inside the sliding groove 9, when the piston connecting rod 2 works, because the sealing sleeve ring 3, the piston connecting rod 2 drives the sealing lantern ring 3 to swing up and down together when swinging up and down, the sealing lantern ring 3 and the inner sealing ring 4 are not easy to wear when in use, the use quality of the sealing lantern ring 3 and the inner sealing ring 4 is ensured, and the sealing performance is further ensured;

referring to fig. 2, a buffer sleeve 10 is arranged on the inner wall of the cylinder barrel 1, the buffer sleeve 10 is sleeved at the outer end of the piston connecting rod 2, the lower surface of the buffer sleeve 10 is welded with a positioning sleeve 11, the buffer sleeve 10 and the positioning sleeve 11 are both in a circular ring structure, the inner diameter of the hollow part of the buffer sleeve 10 is larger than that of the hollow part of the positioning sleeve 11, the piston connecting rod 2 is composed of three groups of round rods, the diameters of the three groups of round rods are sequentially reduced from top to bottom, the round rod at the upper end is connected to the surface of the positioning sleeve 11 in an extrusion manner, the round rod at the middle part is connected to the inside of the hollow part of the positioning sleeve, when the cylinder barrel 1 is used, the piston connecting rod 2 swings up and down, and under the action of the buffer sleeve 10 and the positioning sleeve 11, the piston connecting rod 2 moves up and down in the buffer sleeve 10 and the positioning sleeve 11, and a round rod at the upper end of the piston connecting rod 2 is limited and fixed through the positioning sleeve 11, so that the influence on the tightness caused by overlarge swinging amplitude of the piston connecting rod 2 is avoided;

referring to fig. 1 and 4, a hydraulic check valve 12 is screwed in a cylinder barrel 1, connecting rods 13 are welded on the surface of the hydraulic check valve 12, positioning loop bars 14 are welded on the inner wall of the cylinder barrel 1, the connecting rods 13 are clamped in the positioning loop bars 14, four groups of connecting rods 13 are arranged, the four groups of connecting rods 13 are respectively and symmetrically welded on the surfaces of two sides of the hydraulic check valve 12, the four groups of connecting rods 13 are all in a circular rod-shaped structure, two groups of positioning loop bars 14 are arranged, the positioning loop bars 14 are in a circular frame structure, the surface of a concave part of the positioning loop bars 14 is welded on the inner wall of the cylinder barrel 1, two groups of connecting rods 13 on the inner side are respectively clamped in the concave part of one group of positioning loop bars 14, when the hydraulic check valve 12 is installed, the hydraulic check valve 12 is placed in the cylinder barrel 1 through an installation opening, the connecting rods 13 on the inner side of the hydraulic check valve, the deviation is avoided when the hydraulic one-way valve 12 is installed, and the sealing performance is ensured;

referring to fig. 1 and 5, the skin weld of connecting rod 13 has closing plate 15, cylinder 1 has fixing bolt 16 with closing plate 15's inside spiro union, the skin weld of the two sets of connecting rod 13 in the outside is on closing plate 15's inner wall, closing plate 15 comprises two sets of arcs and a set of rectangular plate, the radian of arc is the same with cylinder 1's radian, cylinder 1's inside is equipped with the installing port, closing plate 15 spiro union is in the inside of installing port, fixing bolt 16 is provided with the multiunit, multiunit fixing bolt 16 spiro union is in the inside of cylinder 1 and closing plate 15, after accomplishing the fixed back of hydraulic check valve 12's preliminary location, closing plate 15 contacts and seals the installing port with cylinder 1's surface, then fix closing plate 15 through fixing bolt 16, the secondary fixed knot structure has been formed, multiple fixed knot constructs, fixed effect is better.

The working principle is as follows: in actual work, because the inner sealing ring 4 is of an elastic structure, the inner wall of the inner sealing ring 4 is extruded on the surface of the piston connecting rod 2, a closed connecting structure is formed, the insides of the cylinder barrel 1 and the piston connecting rod 2 are protected in a sealing mode preliminarily, gas is prevented from leaking, meanwhile, the sealing sleeve ring 3 slides up and down in the cylinder barrel 1 through the positioning slide rod 5 and the mounting slide sleeve 6, the piston connecting rod 2 drives the sealing sleeve ring 3 to move together when working, abrasion during connection is avoided, further, the tightness of the inner sealing ring 4 is ensured, the surface of the piston connecting rod 2 is extruded on the surface of the positioning sleeve 11, the working position of the piston connecting rod 2 is limited through the positioning sleeve 11, the abrasion of the oil cylinder caused by overlarge acting force of the piston connecting rod 2 is avoided, the use quality of the oil cylinder is ensured, and a sealing protection structure is further, when the hydraulic one-way valve 12 is installed, the hydraulic one-way valve 12 is placed into the cylinder barrel 1 through the installation opening, meanwhile, the inner connecting rod 13 enters the positioning sleeve rod 14 to limit the position of the hydraulic one-way valve 12, then the sealing plate 15 seals the installation opening, the hydraulic one-way valve 12 is fixed through the multiple groups of fixing bolts 16, the hydraulic one-way valve 12 is installed in a fixing mode without welding, the installation process can be clearly observed, the jack of the hydraulic one-way valve 12 cannot deform, further, the hydraulic one-way valve 12 cannot leak when in use, the use effect is good, when the hydraulic one-way valve 12 has problems in the use process, the operation of disassembling and installing is not needed to be carried out by adopting a tool, only the multiple groups of fixing bolts 16 need to be screwed, and the hydraulic one-way valve 12 can be taken out through the installation opening, the operation is simple and the use is convenient, is suitable for popularization.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an oil cylinder of sealing ring is prevented leaking to built-in gas, includes cylinder (1), its characterized in that: the inner sliding connection of the cylinder barrel (1) is provided with a piston connecting rod (2), the surface of the piston connecting rod (2) is connected with a sealing sleeve ring (3), the inner wall of the sealing sleeve ring (3) is welded with an inner sealing ring (4), the inner sealing ring (4) is extruded and connected on the surface of the piston connecting rod (2), the surface of the sealing sleeve ring (3) is welded with a positioning slide rod (5), the positioning slide rod (5) is connected in the mounting sliding sleeve (6) in a clamping manner, the surface of the positioning slide rod (5) is welded with a meshing rod (7), the inside of the mounting sliding sleeve (6) is provided with a meshing groove (8), the meshing rod (7) is meshed and connected in the meshing groove (8), the inner wall of the cylinder barrel (1) is provided with a sliding groove (9), the mounting sliding sleeve (6) is connected in the sliding groove (9) in a sliding manner, and, buffer sleeve (10) cup joint in the outer end of piston rod (2), and the lower surface welding of buffer sleeve (10) has position sleeve (11), and the inside spiro union of cylinder (1) has hydraulic check valve (12), the skin weld of hydraulic check valve (12) has connecting rod (13), and the welding has position loop pole (14) on the inner wall of cylinder (1), connecting rod (13) joint is in the inside of position loop pole (14), and the skin weld of connecting rod (13) has closing plate (15), and the inside spiro union of cylinder (1) and closing plate (15) has fixing bolt (16).

2. The cylinder with a built-in gas leakage-proof sealing ring according to claim 1, wherein: the sealing sleeve ring (3) and the inner sealing ring (4) are both of a circular ring-shaped structure, the surface of the inner sealing ring (4) is welded on the inner wall of the hollow part of the sealing sleeve ring (3), the inner sealing ring (4) is of an elastic structure, and the inner wall of the inner sealing ring (4) is connected to the surface of the piston connecting rod (2) in an extruding mode.

3. The cylinder with a built-in gas leakage-proof sealing ring according to claim 1, wherein: the utility model discloses a positioning slide bar, including location slide bar (5), installation sliding sleeve (6), meshing pole (7) and meshing groove (8), location slide bar (5) are circular shaft-like structure, and installation sliding sleeve (6) are circular frame structure, and meshing pole (7) all are provided with the multiunit with meshing groove (8), and location slide bar (5) have two sets of slide bars through multiunit meshing pole (7) joint inside the hollow part of installation sliding sleeve (6), the skin weld of installation sliding sleeve (6), slide bar sliding connection is in the inside of sliding groove (9).

4. The cylinder with a built-in gas leakage-proof sealing ring according to claim 1, wherein: buffer sleeve (10) all are the ring form structure with position sleeve (11), and the hollow part internal diameter of buffer sleeve (10) is greater than the hollow part internal diameter of position sleeve (11), and piston rod (2) comprise three group's round bars, and the diameter top-down of three group's round bars reduces in proper order, and the surface at position sleeve (11) is connected in the extrusion of upper end round bar, and the mid portion round bar cup joints inside the hollow part of position sleeve (11).

5. The cylinder with a built-in gas leakage-proof sealing ring according to claim 1, wherein: the connecting rods (13) are provided with four groups, the four groups of connecting rods (13) are symmetrically welded on the surfaces of two sides of the hydraulic check valve (12) respectively, the four groups of connecting rods (13) are all in a circular rod-shaped structure, the positioning loop rods (14) are provided with two groups, the positioning loop rods (14) are in a circular frame structure, the surface of the sunken parts of the positioning loop rods (14) is welded on the inner wall of the cylinder barrel (1), and the two groups of connecting rods (13) on the inner side are respectively clamped inside the sunken parts of the positioning loop rods (14).

6. The cylinder with a built-in gas leakage-proof sealing ring according to claim 5, wherein: the outside is two sets of the surface welding of connecting rod (13) is on the inner wall of closing plate (15), and closing plate (15) comprises two sets of arcs and a set of rectangular plate, and the radian of arc is the same with the radian of cylinder (1), and the inside of cylinder (1) is equipped with the installing port, and closing plate (15) spiro union is in the inside of installing port, and fixing bolt (16) are provided with the multiunit, and multiunit fixing bolt (16) spiro union is in the inside of cylinder (1) and closing plate (15).

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