CN112555353A

CN112555353A - Chain that leakproofness is strong

Info

Publication number: CN112555353A
Application number: CN202011210634.1A
Authority: CN
Inventors: 张逸成
Original assignee: Wuxi Mancheng Chain Transmission Manufacturing Co ltd
Current assignee: Wuxi Mancheng Chain Transmission Manufacturing Co ltd
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-03-26

Abstract

The invention relates to a chain, which has the effect of avoiding the influence of the clearance between an outer chain plate and an inner chain plate on the chain. The invention discloses a chain with high sealing performance, which comprises a plurality of groups of link units, wherein each group of link units comprises two outer chain plates, two inner chain plates, a pin shaft, a shaft sleeve and a roller, the inner chain plates are provided with through holes for the shaft sleeve to fit and penetrate through, the inner chain plates are provided with sealing sleeves which vertically and outwardly extend around the through holes, the outer chain plates are provided with sealing grooves for the sealing sleeves to fit and rotate, the length of the shaft sleeve is the same as the gap between the two outer chain plates, and the rollers are sleeved outside the shaft sleeve. With the help of the cooperation of seal groove and seal groove, realized that axle sleeve and round pin axle interface are kept apart, guaranteed the chain leakproofness, the unable entering of dust, lubricating oil can not flow.

Description

Chain that leakproofness is strong

Technical Field

The invention relates to a chain, in particular to a chain with strong sealing performance.

Background

Chain transmission is a transmission mode for transmitting the motion and power of a driving sprocket with a special tooth form to a driven sprocket with a special tooth form through a chain. The chain transmission has many advantages, compared with the belt transmission, the chain transmission has no elastic sliding and slipping phenomena, the average transmission ratio is accurate, the work is reliable, and the efficiency is high; the transmission power is large, the overload capacity is strong, and the transmission size under the same working condition is small; the required tension is small, and the pressure acting on the shaft is small; it can work in severe environments such as high temperature, humidity, dustiness, pollution and the like.

The sleeve roller chain is generally composed of an inner chain plate, an outer chain plate, a sleeve, a pin shaft and rollers, wherein the outer chain plate is fixed on the pin shaft, the inner chain plate is fixed on the sleeve, and the rollers and the sleeve as well as the sleeve and the pin shaft have fit clearances, so that the rollers and the sleeve as well as the sleeve and the pin shaft can rotate relatively.

In the prior art, a gap is usually reserved between an inner chain plate and an outer chain plate of a chain, a sealing structure is not arranged between the inner chain plate and the outer chain plate, external dust easily enters the gap between a shaft sleeve and a pin shaft from the gap between the inner chain plate and the outer chain plate, so that friction between the shaft sleeve and the pin shaft is increased, the shaft sleeve and the pin shaft are abraded greatly and generate large noise easily, and meanwhile, lubricating oil in the gap between the shaft sleeve and the pin shaft easily runs off from the gap between the inner chain plate and the outer chain plate, and the lubricating oil runs off more.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a chain with strong sealing performance, which has the effect of avoiding the influence of the gap between an outer chain plate and an inner chain plate on the chain.

In order to achieve the technical purpose, the invention provides the following technical scheme: the utility model provides a chain that leakproofness is strong, includes that the multiunit links the unit, every group link the unit and includes two outer link plates, two inner link plates, round pin axle, axle sleeve and roller, set up the through-hole that supplies the axle sleeve laminating to pass on the inner link plate, be provided with the seal cover that encircles the vertical outside extension of through-hole on the inner link plate, set up on the outer link plate and supply seal cover laminating pivoted seal groove, the length of axle sleeve is the same with two outer link plate clearances, the roller cover is established outside the axle sleeve.

Preferably, a sealing ring is embedded in the sealing groove.

Preferably, an elastic sleeve for sealing the end of the pin shaft is arranged outside the outer chain plate.

Preferably, a jacket surrounding the pin shaft is arranged outside the outer chain plate, and the elastic sleeve is tightly inserted into the jacket.

Preferably, the elastic sleeve is made of a rubber material.

Preferably, the inner side of the jacket is provided with a circular limiting groove, and the outer side wall of the elastic sleeve is convexly provided with a limiting bulge which is fitted and clamped into the limiting groove.

In summary, the present invention achieves the following effects:

1. by means of the matching of the sealing groove and the sealing groove, the shaft sleeve and the pin shaft interface are isolated, the sealing performance of the chain is guaranteed, dust cannot enter, and lubricating oil cannot flow out;

2. the sealing of the pin shaft is realized by means of the matching of the sealing sleeve and the clamping sleeve.

Drawings

Fig. 1 is a schematic diagram for showing the overall structure in this embodiment.

In the figure, 1, an outer chain plate; 2. an inner link plate; 3. a pin shaft; 4. a shaft sleeve; 5. a roller; 6. sealing sleeves; 7. a sealing groove; 8. a seal ring; 9. an elastic sleeve; 10. a jacket; 11. a limiting groove; 12. and a limiting bulge.

Detailed Description

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

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Example (b): the utility model provides a chain that leakproofness is strong, as shown in fig. 1, link the unit including the multiunit, every group links the unit and includes two outer link plates 1, two interior link plates 2, round pin axle 3, axle sleeve 4 and roller 5, set up the through-hole that supplies the laminating of axle sleeve 4 to pass on the interior link plate 2, be provided with on the interior link plate 2 around the vertical outside seal cover 6 that extends of through-hole, set up on the outer link plate 1 and supply seal cover 6 laminating pivoted seal groove 7, the length of axle sleeve 4 is the same with two outer link plate 1 clearances, 5 covers of roller are established outside axle sleeve 4.

As shown in fig. 1, a seal ring 8 is embedded in the seal groove 7.

As shown in fig. 1, the outer link plate 1 is provided with an elastic sleeve 9 for sealing the end of the pin shaft 3.

As shown in fig. 1, the outer link plate 1 is provided with a jacket 10 surrounding the pin shaft 3, and the elastic sleeve 9 is tightly inserted into the jacket 10.

As shown in fig. 1, the elastic sleeve 9 is made of a rubber material.

As shown in fig. 1, a circular limiting groove 11 is formed in the inner side of the jacket 10, and a limiting protrusion 12 fitted into the limiting groove 11 is convexly formed on the outer side wall of the elastic sleeve 9.

The cooperation of seal groove 7 and seal cover 6 has guaranteed that the clearance of inner link plate 2 and axle sleeve 4 is broken and is separated, avoids the dust to get into axle sleeve 4. The matching of the clamping sleeve 10 and the elastic sleeve 9 seals the two ends of the pin shaft 3 protruding out of the outer chain plate 1, so that the lubricating oil is prevented from flowing out along the pin shaft 3, and the sealing performance is further improved.

Claims

1. A chain that leakproofness is strong, its characterized in that: link the unit including the multiunit, every group link the unit and include two outer link joint (1), two inner link joint (2), round pin axle (3), axle sleeve (4) and roller (5), set up the through-hole that supplies axle sleeve (4) laminating to pass on inner link joint (2), be provided with on inner link joint (2) and encircle vertical outside seal cover (6) that extend of through-hole, set up on outer link joint (1) and supply seal cover (6) laminating pivoted seal groove (7), the length of axle sleeve (4) is the same with two outer link joint (1) clearances, roller (5) cover is established outside axle sleeve (4).

2. The chain of claim 1, wherein: and a sealing ring (8) is embedded in the sealing groove (7).

3. A highly sealable chain according to claim 2, wherein: and an elastic sleeve (9) used for sealing the end part of the pin shaft (3) is arranged outside the outer chain plate (1).

4. A highly sealable chain according to claim 3, wherein: a jacket (10) surrounding the pin shaft (3) is arranged outside the outer chain plate (1), and the elastic sleeve (9) is tightly inserted into the jacket (10).

5. The chain of claim 4, wherein: the elastic sleeve (9) is made of rubber material.

6. The chain of claim 5, wherein: the inner side of the clamping sleeve (10) is provided with a circular limiting groove (11), and the outer side wall of the elastic sleeve (9) is convexly provided with a limiting bulge (12) which is stuck into the limiting groove (11).