CN218625199U

CN218625199U - Air spring with dustproof mechanism

Info

Publication number: CN218625199U
Application number: CN202222942266.0U
Authority: CN
Inventors: 杨忠宁; 宋羽
Original assignee: Guizhou Longfei Air Spring Co ltd
Current assignee: Guizhou Longfei Air Spring Co ltd
Priority date: 2022-11-05
Filing date: 2022-11-05
Publication date: 2023-03-14
Anticipated expiration: 2032-11-05

Abstract

The utility model discloses an it relates to air spring technical field of air spring with dustproof mechanism, aim at avoiding the dust, the dust gets into the air spring barrel, keep the unanimous not relative rotating of piston rod and barrel simultaneously, and air spring both ends parts can be changed, its technical scheme main points are that the barrel encircles with the junction of piston rod and is equipped with the dust cover, the one end welding that the piston rod got into the barrel has the tooth limit piston, it has a plurality of tooth trace grooves to dig in the barrel to coincide with the border of tooth limit piston, two rod end mechanism departments set up in piston rod pole point, another department installs the tail end at the barrel, rod end mechanism's both ends post welds respectively in the pole point of piston rod and the tail end of barrel, the locking screw welds the toe top surface at the end post, the lock nut screw thread connects at locking screw and laminates in engaging lug.

Description

Air spring with dustproof mechanism

Technical Field

The utility model belongs to the technical field of the air spring technique and specifically relates to indicate an air spring with dustproof mechanism.

Background

The gas spring is an industrial accessory which can play a role in supporting, buffering, braking, height adjustment, angle adjustment and the like. It is composed of the following parts: the device comprises a pressure cylinder, a piston rod, a piston, a sealing guide sleeve, filler, an in-cylinder control element, an out-cylinder control element, a joint and the like. The principle is that inert gas or oil-gas mixture is filled into a closed pressure cylinder, the pressure in a cavity is several times or dozens of times higher than the atmospheric pressure, and the motion of a piston rod is realized by utilizing the pressure difference generated by the fact that the cross section area of the piston rod is smaller than that of the piston.

In the existing air spring used, one end of a piston rod of the air spring is inserted into an air lever, the other end of the piston rod is arranged outside, dust and dust are inevitably introduced into the joint of the exposed piston rod and the air cylinder, so that the volume in the air cylinder is reduced, the sliding friction of the piston rod at the joint is increased, and even the piston rod and the sealing guide sleeve are damaged, so that the air spring is required to be frequently checked and maintained, and the service life of the air spring is also shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an air spring with dustproof mechanism can prevent in the dust gets into the barrel, can lock piston rod and barrel as an organic whole, satisfies the demand of changing different end parts under different sight.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides an air spring with dustproof mechanism, includes piston rod, dust cover, barrel and rod end mechanism, the barrel encircles with the junction of piston rod and is equipped with the dust cover, two rod end mechanism departments set up in the piston rod pole point, and the tail end at the barrel is installed to another department, the one end welding that the piston rod got into the barrel has the tooth limit piston, it has a plurality of tooth trace grooves identical with the border of tooth limit piston to open the chisel in the barrel.

Further, a rubber layer ring is arranged on the inner side, close to the piston rod, of the dust cover, and the rubber layer ring is tightly attached to the piston rod without a gap.

Further, rod end mechanism includes the end post, ends advance nut, engaging lug, locking screw and lock nut, two department end posts weld respectively in the rod point of piston rod and the tail end of barrel, the periphery of end post is screwed there is the nut that advances of ending, the engaging lug is twisted and is closed in the top of end post, the locking screw welds the toe top surface at the end post, the locking nut screw thread connects at locking screw and laminates in the engaging lug.

To sum up, the beneficial technical effects of the utility model are that:

1. the dust cover is adopted, so that dust can be prevented from entering the cylinder body;

2. the toothed piston is selected, so that the piston rod and the cylinder can be locked into a whole without relative rotation;

3. a rod end mechanism is applied, so that the requirements of replacing different end parts under different scenes are met.

Drawings

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

FIG. 2 is a schematic sectional view of the dust cover of the present invention;

FIG. 3 is a schematic view of the cross sections A, B and C of the cylinder body of the present invention;

fig. 4 is an enlarged schematic view of the rod end mechanism of the present invention;

1. a piston rod; 2. a dust cover; 3. a cylinder body; 4. a rod end mechanism; 5. a rubber layer ring; 6. a toothed piston; 7. tooth trace grooves; 8. an end post; 9. a stop nut; 10. connecting lugs; 11. locking the screw rod; 12. and locking the nut.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses an air spring with dustproof mechanism, including piston rod 1, dust cover 2, barrel 3 and rod-end mechanism 4, barrel 3 encircles with the junction of piston rod 1 and is equipped with dust cover 2, and 4 departments of two rod-end mechanisms set up in 1 pole point of piston rod, and another department installs the tail end at barrel 3, and dust cover 2 is provided with rubber layer ring 5 near the inboard of piston rod 1, and rubber layer ring 5 hugs closely piston rod 1 seamless.

Referring to fig. 3, a toothed piston 6 is welded at one end of the piston rod 1 entering the cylinder 3, and a plurality of tooth trace grooves 7 chiseled in the cylinder 3 are matched with the edge of the toothed piston 6.

Referring to fig. 4, the rod end mechanism 4 includes an end post 8, a stop nut 9, a connection lug 10, a locking screw 11 and a locking nut 12, the two end posts 8 are respectively welded to the rod tip of the piston rod 1 and the tail end of the cylinder 3, the stop nut 9 is screwed on the periphery of the end post 8, the connection lug 10 is screwed on the top end of the end post 8, the locking screw 11 is welded on the top surface of the rod tip of the end post 8, and the locking nut 12 is in threaded connection with the locking screw 11 and attached to the connection lug 10.

The working principle is as follows: one end of a piston rod 1 of the air spring extends into a cylinder body 3, an air cavity is formed by a tooth edge piston 6 and the cylinder body 3, the other end of the piston rod is provided with a connecting lug 10 through a locking screw rod 11 and a locking nut 12, the piston rod can be fixed by the connecting lug 10 and combined with other components, and the other components can be replaced by other components, the tail end of the cylinder body 3 is treated similarly, a dust cover 2 arranged at the joint of the piston rod 1 and the cylinder body 3 can move relative to the piston rod 1 at any time, the gap of the joint is always kept closed, meanwhile, a rubber layer ring 5 is tightly hooped on the inner side of the dust cover 2, the rubber layer ring 5 is provided with a sealing ring of a multilayer fit piston rod 1, dust can be avoided to the maximum degree, and enters the gap of the joint, so that the long-time use of the air spring is ensured.

The embodiment of this embodiment is the preferred embodiment of the present invention, not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model should be covered within the protection scope of the utility model.

Claims

1. The utility model provides an air spring with dustproof mechanism, includes piston rod (1), dust cover (2), barrel (3) and rod end mechanism (4), characterized in that: the dust cover (2) is arranged at the joint of the cylinder body (3) and the piston rod (1) in a surrounding mode, one position of each rod end mechanism (4) is arranged at the rod tip of the piston rod (1), and the other position of each rod end mechanism is arranged at the tail end of the cylinder body (3).

2. A gas spring with a dust prevention mechanism as set forth in claim 1, wherein: one end of the piston rod (1) entering the cylinder body (3) is welded with a tooth edge piston (6), and a plurality of tooth trace grooves (7) are chiseled in the cylinder body (3) and are matched with the edge of the tooth edge piston (6).

3. A gas spring with a dust prevention mechanism as set forth in claim 1, wherein: the inner side of the dust cover (2) close to the piston rod (1) is provided with a rubber layer ring (5), and the rubber layer ring (5) is tightly attached to the piston rod (1) without a gap.

4. A gas spring with a dust prevention mechanism as set forth in claim 1, wherein: rod end mechanism (4) include end post (8), end nut (9), engaging lug (10), locking screw (11) and lock nut (12), two department end posts (8) weld respectively in the tail end of the pole point of piston rod (1) and barrel (3), the periphery of end post (8) is screwed and is had end nut (9), engaging lug (10) are twisted and are closed in the top of end post (8), locking screw (11) are welded in the toe top surface of end post (8), locking nut (12) screw thread phase connects in locking screw (11) and is laminated in engaging lug (10).