CN216789117U

CN216789117U - Sealing structure for chain hinge pair

Info

Publication number: CN216789117U
Application number: CN202220457966.8U
Authority: CN
Inventors: 周健; 张可飞; 马全宝; 周子棠; 王晓龙; 王州
Original assignee: ANHUI HUANGSHAN HENGJIU CHAIN DRIVE CO LTD
Current assignee: ANHUI HUANGSHAN HENGJIU CHAIN DRIVE CO LTD
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-06-21
Anticipated expiration: 2032-03-04

Abstract

The utility model discloses a sealing structure for a chain hinge pair, wherein a chain consists of a plurality of hinges, the hinges are connected through adjacent chain links, each hinge comprises an inner chain plate, an outer chain plate, a sleeve, a pin shaft and a roller, a sealing ring seat is respectively sleeved outside the sleeve and between the inner chain plate and the outer chain plate, a sealing ring groove I is arranged on the side wall, close to the inner chain plate, of the sealing ring seat, an O-shaped sealing ring I is arranged in the sealing ring groove I, a sealing ring groove II is arranged on the side wall, close to the outer chain plate, of the sealing ring seat, an O-shaped sealing ring II is arranged in the sealing ring groove II, a sealing ring groove III is arranged on the inner wall, close to the sleeve, of the sealing ring seat, an O-shaped sealing ring III is arranged in the sealing ring groove III, and the O-shaped sealing ring III is sleeved outside the sleeve. The chain hinge pair can prevent loose material particles from entering the chain hinge pair in a severe working condition environment, so that the chain hinge pair is blocked to cause chain disengagement and failure due to incapability of meshing transmission of the chain.

Description

Sealing structure for chain hinge pair

Technical Field

The utility model relates to the field of hinge sealing, in particular to a sealing structure for a chain hinge pair.

Background

In the traditional industrial conveying chain, a sealing device is not arranged between chain hinge pairs, when the chain is used in a severe and dusty bulk material conveying environment, dust, slurry, micro-particles and the like easily enter between the hinge pairs consisting of the pin shaft, the sleeve and the inner and outer chain plates to cause the chain hinge pairs to be blocked, so that the chain cannot be normally meshed and driven to cause chain detachment and failure; in addition, because the chain hinge pair is not sealed, lubricating oil between the hinge pair is easy to lose, the lubricating property is poor, and the transmission effect and the service life of the chain are seriously influenced.

Later, an O-shaped sealing ring is sleeved on the outer circle of the chain sleeve, although the problems are improved, the O-shaped sealing ring is not protected, and the sealing ring is made of a plastic material, so that the sealing ring is small in number and easy to damage by sharp micro-particles, and the service life of the chain is not obviously prolonged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sealing structure for a chain hinge pair, which can prevent the chain from losing efficacy due to chain disengagement caused by the fact that the chain hinge pair is blocked and the chain cannot be meshed for transmission in a severe working condition environment due to the fact that particles of dust, slurry and other bulk materials enter the chain hinge pair; the chain hinge pair can prevent lubricating oil between the chain hinge pair from leaking, the lubrication of the hinge pair is guaranteed, the abrasion resistance of the pin shaft and the sleeve is improved, and therefore the service life of the chain is prolonged.

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

a sealing structure for a chain hinge pair is characterized in that a chain consists of a plurality of hinges which are connected by adjacent chain links, the hinge comprises an inner chain plate, an outer chain plate, a sleeve, a pin shaft and a roller, wherein a sealing ring seat is respectively sleeved outside the sleeve and between the inner chain plate and the outer chain plate, a first sealing ring groove is arranged on the side wall of the sealing ring seat close to the inner chain plate, a first O-shaped sealing ring is arranged in the first sealing ring groove, the first O-shaped sealing ring is abutted against the inner chain plate, a second sealing ring groove is arranged on the side wall of the sealing ring seat close to the outer chain plate, a second O-shaped sealing ring is arranged in the second sealing ring groove, the O-shaped sealing ring II is abutted against the outer chain plate, a sealing ring groove III is arranged on the inner wall of the sealing ring seat close to the sleeve, and a third O-shaped sealing ring is arranged in the third sealing ring groove and is sleeved outside the sleeve.

Preferably, the first sealing ring groove and the O-shaped sealing ring are respectively provided with two.

Preferably, the two O-ring seals are arranged on the same horizontal plane.

Preferably, the inner chain plate and the outer chain plate press the first O-shaped sealing ring and the second O-shaped sealing ring.

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

the chain hinge pair is simultaneously sealed in the axial direction and the radial direction through the O-shaped sealing rings, so that impurities such as external dust, slurry and microparticles are effectively prevented from entering the chain hinge pair, the lubricating oil added between the sleeve and the pin shaft is prevented from flowing out, the sleeve pin shaft is fully lubricated, the wear resistance of the hinge pair is improved, the O-shaped sealing rings are effectively protected by the sealing ring seats, and the service effect and the service life of the sealing rings are ensured. The utility model can prevent the chain hinge pair from being locked and ensure the sufficient lubrication between the pin sleeves, thereby greatly prolonging the service life of the chain in extreme environment.

Drawings

FIG. 1 is a schematic structural view of a sealing structure for a chain hinge pair according to an embodiment of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

in the figure, the bearing comprises an inner chain plate 1, an outer chain plate 2, an outer chain plate 3, a sleeve 4, a pin shaft 5, a roller 6, a seal ring seat 7, seal ring grooves I and 8, O-shaped seal rings I and 9, seal ring grooves II and 10, O-shaped seal rings II and 11, seal ring grooves III and 12 and an O-shaped seal ring III.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, a sealing structure for a chain hinge pair is shown, wherein a chain is composed of a plurality of hinges, and the hinges are connected by adjacent chain links, and each hinge comprises an inner chain plate 1, an outer chain plate 2, a sleeve 3, a pin shaft 4 and a roller 5. A sealing ring seat 6 is sleeved outside the sleeve 3 and between the inner chain plate 1 and the outer chain plate 2 respectively, a sealing ring groove I7 is formed in the side wall, close to the inner chain plate 1, of the sealing ring seat 6, an O-shaped sealing ring I8 is installed in the sealing ring groove I7, and the O-shaped sealing ring I8 is abutted to the inner chain plate 1. The first sealing ring groove 7 and the first O-shaped sealing ring 8 are respectively provided with two, and the two first O-shaped sealing rings 8 are arranged on the same horizontal plane. And a second sealing ring groove 9 is formed in the side wall, close to the outer chain plate 2, of the sealing ring seat 6, a second O-shaped sealing ring 10 is installed in the second sealing ring groove 9, the second O-shaped sealing ring 10 abuts against the outer chain plate 2, and the first O-shaped sealing ring 8 and the second O-shaped sealing ring 10 are tightly pressed by the inner chain plate 1 and the outer chain plate 2. A third sealing ring groove 11 is formed in the inner wall, close to the sleeve 3, of the sealing ring seat 6, a third O-shaped sealing ring 12 is arranged in the third sealing ring groove 11, and the third O-shaped sealing ring 12 is sleeved outside the sleeve 3.

The working principle is as follows: four O-shaped sealing rings are additionally arranged between the inner chain plate 1 and the outer chain plate 2 and are protected by sealing ring seats 6, wherein a first O-shaped sealing ring 8 and a second O-shaped sealing ring 10 are pressed by the inner chain plate 2 and the outer chain plate 2 to seal a plane; the O-shaped sealing ring III 12 is sleeved in the outer circle of the sleeve 3 and the radial sealing ring groove III 11 of the sealing ring seat 6 to seal the outer diameter of the sleeve 3, and the sealing of the chain hinge pair is ensured through the sealing of a plurality of radial and planar O-shaped sealing rings.

The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the present invention as defined in the accompanying claims.

Claims

1. The utility model provides a seal structure for chain hinge is vice, the chain comprises a plurality of hinges, form through adjacent chain link connection between the hinge, the hinge includes inner plate, outer plate, sleeve, round pin axle and roller, its characterized in that: the O-shaped sealing ring is characterized in that sealing ring seats are respectively sleeved outside the sleeve and between the inner chain plate and the outer chain plate, a first sealing ring groove is formed in the side wall, close to the inner chain plate, of each sealing ring seat, a first O-shaped sealing ring is installed in the first sealing ring groove, the first O-shaped sealing ring is abutted against the inner chain plate, a second sealing ring groove is formed in the side wall, close to the outer chain plate, of each sealing ring seat, a second O-shaped sealing ring is installed in the second sealing ring groove, the second O-shaped sealing ring is abutted against the outer chain plate, a third sealing ring groove is formed in the inner wall, close to the sleeve, of each sealing ring seat, a third O-shaped sealing ring is arranged in the third sealing ring groove, and the third O-shaped sealing ring is sleeved outside the sleeve.

2. A sealing structure for a chain hinge pair according to claim 1, wherein: and the first sealing ring groove and the O-shaped sealing ring are respectively provided with two.

3. A sealing structure for a chain hinge pair according to claim 2, wherein: the two O-shaped sealing rings I are arranged on the same horizontal plane.

4. A sealing structure for a chain hinge pair according to claim 1, wherein: the inner chain plate and the outer chain plate tightly press the O-shaped sealing ring I and the O-shaped sealing ring II.