CN215109801U

CN215109801U - Be applied to thermal-insulated dustproof construction of piston rod

Info

Publication number: CN215109801U
Application number: CN202120955084.XU
Authority: CN
Inventors: 高豪爽
Original assignee: Zhejiang Fengzhou Precision Manufacturing Co ltd
Current assignee: Zhejiang Fengzhou Precision Manufacturing Co ltd
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2021-12-10
Anticipated expiration: 2031-05-07

Abstract

The utility model relates to a be applied to thermal-insulated dustproof construction of piston rod, including cylinder body and piston rod, the cylinder body in install the piston rod, this piston rod upper end passes the cylinder body top, the cylinder body top from top to bottom imbed in proper order and install dirt seal gland, dirt seal and dust ring, dirt seal gland, dirt seal and dust ring all overlap on the piston rod, the dirt seal compress tightly fixedly through dirt seal gland, this dirt seal is ring platelike structure, dirt seal the upper end and arrange round oblique ascending dustproof lip around the hole, this dustproof lip and piston rod periphery wall sliding fit. The utility model discloses increase the structure of dirt seal and dirt seal gland, when guaranteeing the dustproof effect of dirt seal, reduce the smear metal to the injury of dust ring and reduce piling up of inslot filth, and increase the life of sealing member simultaneously.

Description

Be applied to thermal-insulated dustproof construction of piston rod

Technical Field

The utility model relates to an hydro-cylinder technical field especially relates to a be applied to thermal-insulated dustproof construction of piston rod.

Background

When the oil cylinder works, the operation of the oil cylinder is required to be executed through the movement of the piston rod, the piston rod is difficult to be completely isolated from the external environment when extending out in the telescopic movement, and particularly, the oil cylinder works in a field with complex working conditions.

The existing structure is that a dustproof sealing groove is formed in a cylinder body, a dustproof ring is installed in the dustproof sealing groove, the dustproof sealing groove is a through hole, a gap between the dustproof sealing groove and a piston rod is large, a lip of the dustproof ring is located outside, cutting scraps and oil stains are prone to accumulation, and the piston rod can be scratched. During machining, chips fall on the dust seal to damage the dust seal, so that dust prevention is invalid, dust, oil dirt and chips enter the cylinder body, and the service life of the oil cylinder is shortened.

Disclosure of Invention

The utility model aims to solve the technical problem that a be applied to piston rod's thermal-insulated dustproof construction is provided, increases the structure of dirt seal and dirt seal gland, when guaranteeing the dustproof effect of dirt seal, reduces the smear metal to the injury of dust ring and reduce piling up of inslot filth, and increase the life of sealing member simultaneously.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a be applied to thermal-insulated dustproof construction of piston rod, includes cylinder body and piston rod, the cylinder body in install the piston rod, this piston rod upper end passes the cylinder body top, the cylinder body top from top to bottom imbed in proper order and install dirt seal gland, dirt seal and dust ring, dirt seal gland, dirt seal and dust ring all overlap on the piston rod, the dirt seal compress tightly fixedly through dirt seal gland, this dirt seal is ring platelike structure, dirt seal upper end around the hole arranged the ascending dustproof lip of round slope, this dustproof lip and piston rod periphery wall sliding fit.

As right technical scheme a supplement, the dust ring include ring and lower ring, last ring arrange with lower ring is concentric, and the hole diameter of going up the ring is the same with the hole diameter of lower ring, the external diameter of going up the ring be less than the external diameter of lower ring, the cylinder body on set up the ladder groove that holds ring and lower ring.

As a supplement to the technical proposal of the utility model, the dust seal is made of stainless steel material.

As right technical scheme a supplement, dirt seal gland be ring platelike structure, this dirt seal gland is located the last port department of hole and has arranged the round and detain the limit, the limit of detaining push down dirt and seal and dustproof lip.

As a supplement to the technical scheme of the utility model, dirt seal gland and cylinder body top between adopt interference fit or adopt threaded connection.

Has the advantages that: the utility model relates to a be applied to thermal-insulated dustproof construction of piston rod has following several advantages:

1. the clearance between the piston rod and the stepped groove on the cylinder body is small, so that cuttings can be effectively prevented from entering;

2. the structure of the dust seal and the dust seal gland is increased, so that the dust seal dustproof effect is ensured, the damage of cutting scraps to a dustproof ring is reduced, the accumulation of dirt in a groove is reduced, and the service life of a sealing piece can be prolonged;

3. meanwhile, the structures of the dust seal and the dust seal gland can also play a certain heat insulation effect.

Drawings

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

fig. 2 is a schematic structural view of the dust seal of the present invention;

fig. 3 is a schematic structural view of the dust seal cover of the present invention;

fig. 4 is a schematic structural view of the dust ring of the present invention;

fig. 5 is a schematic structural view of the present invention with the dust ring removed.

The figure is as follows: 1. the dust seal comprises a cylinder body, 2, a dust seal ring, 3, a dust seal gland, 4, a dust seal, 5, a piston rod, 6, a dust lip, 7, a buckling edge, 8, an upper ring, 9, a lower ring, 10 and a stepped groove.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

The utility model discloses an embodiment relates to a be applied to thermal-insulated dustproof construction of piston rod, as shown in fig. 1-5, including cylinder body 1 and piston rod 5, cylinder body 1 in install piston rod 5, this piston rod 5 upper end passes cylinder body 1 top, 1 top of cylinder body from top to bottom imbed in proper order and install dirt seal gland 3, dirt seal 4 and dust ring 2, dirt seal gland 3, dirt seal 4 and dust ring 2 all overlap on piston rod 5, dirt seal 4 compress tightly fixedly through dirt seal gland 3, this dirt seal 4 is ring platelike structure, dirt seal 4 upper end around the hole and arrange the ascending dustproof lip 6 of round slope, this

dustproof lip

6 and 5 sliding fit of piston rod peripheral wall.

Dust ring 2 include ring 8 and lower ring 9, last ring 8 with lower ring 9 arrange with one heart, and the hole diameter of going up ring 8 is the same with the hole diameter of lower ring 9, the external diameter of going up ring 8 be less than the external diameter of lower ring 9, cylinder body 1 on offer and hold ring 8 and the ladder groove 10 of lower ring 9. The dust ring 2 is divided into an upper ring 8 and a lower ring 9 to form a step-shaped structure, and then the step-shaped structure is matched with the step groove 10, so that the position of the dust ring 2 can be effectively limited.

The dust seal gland 3 is of a circular ring plate-shaped structure, a circle of buckling edge 7 is arranged at the upper port of the inner hole of the dust seal gland 3, and the buckling edge 7 presses the dust seal 4 and the dust lip 6.

The utility model adds the dust seal 4 (the dust seal 4 is made of stainless steel material) above the dust ring 2, the dust ring 2 is hidden inside through the dust seal 4, the dust seal 4 is pressed and fixed through the dust seal gland 3, the outer diameter of the dust seal gland 4 is in interference fit with the aperture of the cylinder body 1, thereby pressing the iron shell dust seal; the dustproof lip 6 of the dust seal 4 is in clearance fit with the piston rod 5, the effect of reducing accumulation of dirt at the lip can be achieved, meanwhile, a certain heat insulation effect can be achieved, and the service life of the dustproof ring 2 is prolonged.

The dust seal gland 3 and the top of the cylinder body 1 can adopt interference fit or threaded connection.

Claims

1. The utility model provides a be applied to thermal-insulated dustproof construction of piston rod, includes cylinder body (1) and piston rod (5), cylinder body (1) in install piston rod (5), cylinder body (1) top is passed to this piston rod (5) upper end, its characterized in that: cylinder body (1) top from top to bottom in proper order the embedding install dirt seal gland (3), dirt seal (4) and dust ring (2), dirt seal gland (3), dirt seal (4) and dust ring (2) all overlap on piston rod (5), dirt seal (4) compress tightly fixedly through dirt seal gland (3), this dirt seal (4) are ring platelike structure, dirt seal (4) upper end around the hole and arranged round slope ascending dustproof lip (6), this dustproof lip (6) and piston rod (5) periphery wall sliding fit.

2. The heat-insulating and dust-proof structure applied to the piston rod as claimed in claim 1, wherein: dust ring (2) include ring (8) and lower ring (9), last ring (8) and lower ring (9) arrange with one heart, and the hole diameter of going up ring (8) is the same with the hole diameter of lower ring (9), the external diameter of going up ring (8) be less than the external diameter of lower ring (9), cylinder body (1) on offer and hold ladder groove (10) of ring (8) and lower ring (9).

3. The heat-insulating and dust-proof structure applied to the piston rod as claimed in claim 1, wherein: the dust seal (4) is made of stainless steel materials.

4. The heat-insulating and dust-proof structure applied to the piston rod as claimed in claim 1, wherein: the dust seal pressing cover (3) is of a circular-ring plate-shaped structure, a circle of buckling edge (7) is arranged at the upper port of the inner hole of the dust seal pressing cover (3), and the buckling edge (7) presses the dust seal (4) and the dust lip (6).

5. The heat-insulating and dust-proof structure applied to the piston rod as claimed in claim 1 or 4, wherein: the dust seal gland (3) is in interference fit with the top of the cylinder body (1) or is in threaded connection with the top of the cylinder body.