CN213332177U

CN213332177U - Gas spring with sealing protection function

Info

Publication number: CN213332177U
Application number: CN202021459017.0U
Authority: CN
Inventors: 岳坤
Original assignee: Xuzhou Donghong Machinery Manufacturing Co ltd
Current assignee: Xuzhou Donghong Machinery Manufacturing Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-06-01
Anticipated expiration: 2030-07-22

Abstract

The utility model relates to an air spring with sealed protection, including overcoat, protection endotheca, piston body, piston rod, sealing washer one, sealing washer two, direction sealing member and U type sealing washer, the overcoat inside through sealing ring fixed connection protection endotheca, protection endotheca inboard divide into one side through the piston body and set up to hydraulic pressure oil pocket and gas chamber, the hydraulic pressure oil pocket keep away from piston body one side protection endotheca inboard sealed cup joint direction sealing member, piston body fixedly connected with bottom of the piston rod, the piston rod top pass hydraulic pressure oil pocket and direction sealing member in proper order and stretch out the protection endotheca, piston body peripheral surface upper portion joint have sealing washer one, piston body peripheral surface lower part joint have sealing washer two.

Description

Gas spring with sealing protection function

Technical Field

The utility model relates to an air spring, concretely relates to air spring with seal protection.

Background

A gas spring (gas spring) is an industrial accessory which can play a role in supporting, buffering, braking, height adjustment, angle adjustment and the like, and comprises the following parts: the air spring comprises a pressure cylinder, a piston rod, a piston, a sealing guide sleeve, a filler (inert gas or oil-gas mixture), an in-cylinder control element, an out-cylinder control element (referring to a controllable air spring), a joint and the like.

SUMMERY OF THE UTILITY MODEL

To the problem that above-mentioned prior art exists, the utility model provides a have sealed protection air spring has realized the inner skleeve structure setting that has the inlayer to and seal and consolidate through the sealing ring with the outer sleeve and be connected, realize the whole wear-resisting function of air spring and strengthen, simultaneously, the piston body that has the main motion effect strengthens sealedly through the sealing washer respectively through upper portion, middle part and lower part, realized on the concertina movement of air spring, the high strength sealed effect, it is serious to have solved foretell degree of wear, causes the technical problem that the degree of seal descends.

In order to achieve the above object, the utility model discloses a following technical scheme realizes: a sealed protection gas spring comprises an outer sleeve, a protection inner sleeve, a piston body, a piston rod, a first sealing ring, a second sealing ring, a guide sealing element and a U-shaped sealing ring, wherein the inner part of the outer sleeve is fixedly connected with the protection inner sleeve through the sealing ring, the inner side of the protection inner sleeve is divided into a hydraulic oil cavity and a gas cavity through the piston body, the inner side of the protection inner sleeve, which is far away from the piston body, of the hydraulic oil cavity is hermetically sleeved with the guide sealing element, the piston body is fixedly connected with the bottom end of the piston rod, the top end of the piston rod sequentially penetrates through the hydraulic oil cavity and the guide sealing element to extend out of the protection inner sleeve, the upper part of the outer peripheral surface of the piston body is clamped with the first sealing ring, the lower part of the outer peripheral surface of the piston body, the outer sleeve is away from the outer surface of one side of the piston rod to form the connecting piece in an integrated mode.

Piston body peripheral surface from last to having seted up seal groove one, U type groove and seal groove two down in proper order, seal groove one, U type groove and seal groove two in correspond joint sealing washer one, U type sealing washer and sealing washer two.

And the second sealing ring is arranged close to one side of the gas cavity.

The gas in the gas cavity is set as synthetic rare gas.

To sum up, the utility model provides a have sealed protection air spring has realized the inner skleeve structure setting that has the inlayer to and seal up and consolidate through the sealing ring with the outer sleeve and be connected, realize that the whole wear-resisting function of air spring is strengthened, simultaneously, the piston body that has main motion effect strengthens sealedly through the sealing washer respectively through upper portion, middle part and lower part, realized on the concertina movement of air spring, the sealed effect of high strength.

Drawings

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

in the figure: the piston comprises an outer sleeve 1, a sealing ring 11, a connecting piece 12, a protective inner sleeve 2, a hydraulic oil cavity 21, a gas cavity 22, a piston body 3, a first sealing groove 31, a U-shaped groove 32, a second sealing groove 33, a piston rod 4, a first sealing ring 5, a second sealing ring 6, a guide sealing piece 7 and a U-shaped sealing ring 8.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in figure 1, the utility model relates to an air spring with sealing protection, including overcoat 1, protection endotheca 2, piston body 3, piston rod 4, sealing washer one 5, sealing washer two 6, direction sealing member 7 and U type sealing washer 8, overcoat 1 is inside to be through sealing ring 11 fixed connection protection endotheca 2, realize reinforcing overcoat 1 degree of wear, and the sealing connection degree between overcoat 1 and the protection endotheca 2, protection endotheca 2 is inside to be provided with piston body 3, divide into hydraulic pressure oil pocket 21 and gas chamber 22 with protection endotheca 2 through piston body 3, can realize after piston body 3 back and forth movement, realize oil-gas mixing, carry out pressure transition, realize piston body 3 slides through direction sealing member 7 guide effect and stretches out piston rod 4, realize air spring pressure supporting effect, direction sealing member 7 sets up in one side that hydraulic pressure oil pocket 21 keeps away from piston body 3, and piston rod 4 and, the piston rod 4 is convenient to replace, the first sealing groove 31, the U-shaped groove 32 and the second sealing groove 33 are respectively arranged on the outer circumferential surface of the piston body 3, the first sealing groove 31, the U-shaped groove 32 and the second sealing groove 33 are correspondingly connected with the first sealing ring 5, the U-shaped sealing ring 8 and the second sealing ring 6 to realize the sealing connection between the inner protective sleeve 2 and the piston body 3, the bottoms of the two sides of the U-shaped sealing ring 8 are correspondingly and closely connected with the first sealing ring 5 and the second sealing ring 6, the sealing characteristic of the U-shaped sealing ring 8 is set, the first sealing ring 5 and the second sealing ring 6 are also strengthened to seal the piston body 3, in order to increase the sealing strength of the gas spring in the reciprocating motion, one side of the outer sleeve 1 is provided with a connecting piece 12 for installation, and the gas cavity 22 is internally provided with synthetic rare gas, has the characteristics of small chemical reaction of inert gas and strong activity, and realizes the functions of sufficient pressure and stability of the gas spring.

To sum up, the utility model provides a have sealed protection air spring has realized the inner skleeve structure setting that has the inlayer to and seal up and consolidate through the sealing ring and be connected with the outer sleeve, realize the whole wear-resisting function of air spring and strengthen, simultaneously, the piston body that has the main motion effect strengthens sealedly through the sealing washer respectively through upper portion, middle part and lower part, has realized on the concertina movement of air spring, the sealed effect of high strength.

Claims

1. A gas spring with sealing protection is characterized by comprising an outer sleeve (1), a protective inner sleeve (2), a piston body (3), a piston rod (4), a sealing ring I (5), a sealing ring II (6), a guide sealing element (7) and a U-shaped sealing ring (8), wherein the protective inner sleeve (2) is fixedly connected inside the outer sleeve (1) through a sealing ring (11), the inner side of the protective inner sleeve (2) is divided into a hydraulic oil cavity (21) and a gas cavity (22) through the piston body (3), the inner side of the protective inner sleeve (2) is hermetically sleeved with the guide sealing element (7) at the side of the hydraulic oil cavity (21) far away from the piston body (3), the piston body (3) is fixedly connected with the bottom end of the piston rod (4), and the top end of the piston rod (4) sequentially penetrates through the hydraulic oil cavity (21) and the guide sealing, the piston body (3) periphery surface upper portion joint have sealing washer one (5), piston body (3) periphery surface lower part joint have sealing washer two (6), piston body (3) periphery surface middle part joint have U type sealing washer (8), U type sealing washer (8) both sides surface bottom correspond and hug closely connect sealing washer one (5) and sealing washer two (6), overcoat (1) keep away from piston rod (4) one side outside surface integrated into one piece connecting piece (12).

2. The gas spring with sealing protection as claimed in claim 1, wherein the outer peripheral surface of the piston body (3) is sequentially provided with a first sealing groove (31), a U-shaped groove (32) and a second sealing groove (33) from top to bottom, and the first sealing groove (31), the U-shaped groove (32) and the second sealing groove (33) are correspondingly clamped with a first sealing ring (5), a U-shaped sealing ring (8) and a second sealing ring (6).

3. A gas spring with seal protection according to claim 1, characterized in that said second seal ring (6) is disposed adjacent to the side of the gas chamber (22).

4. A gas spring with confinement protection according to claim 3, wherein the gas in the gas chamber (22) is provided as synthetic rare gas.