CN210600038U - Seamless special-shaped sleeve for chain - Google Patents

Abstract

The utility model belongs to the mechanical design field, especially, seamless heterotypic sleeve of chain, heterotypic telescopic lateral wall are straight arm-type, and its inside wall constitutes two loudspeaker form openings that use heterotypic telescopic central horizontal cross section to become mirror symmetry about the symmetry center becomes, two loudspeaker form opening back of the body mutually, two loudspeaker form open-ended department of meeting the lateral wall level and smooth transition. The utility model discloses a heterotypic sleeve is used for the chain after, but the chain dress is to the bender on during operation heterotypic sleeve and round pin between the axle for line friction contact, compares with the mode of point friction between sleeve and the round pin axle among the prior art and has reduced frictional force, reduces the wearing and tearing volume, has improved the life of chain on the bender equipment, has improved the chain initial stage extension greatly, satisfies the equipment demand.

Description

Seamless special-shaped sleeve for chain

Technical Field

The utility model belongs to the mechanical design field, especially, seamless heterotypic sleeve of chain.

Background

The chain sleeve in the prior art is made of common carbon steel by rolling with sleeve rolling equipment, the end surfaces are uneven, and the concentricity and the roundness are difficult to ensure; the common chain structure comprises an outer sheet, an inner sheet, a common sleeve, a pin shaft and a roller, wherein the outer sheet is in interference fit with the pin shaft, the inner sheet is in interference fit with the common sleeve, the pin shaft is in clearance fit with the common sleeve, and the inner side wall and the outer side wall of the common sleeve are of straight arm type structures, namely the straight arm type structures are the same as the inner side wall and the outer side wall of a cylinder and are straight without inclined planes.

When the chain arranged on the turning machine works, the common sleeve barrel and the pin shaft are in point contact, as shown in figure 4, the weight is the same, the point contact friction is large, and the abrasion is accelerated.

In addition, the chain can not meet the requirement of equipment due to quick elongation, and the cost is greatly increased.

SUMMERY OF THE UTILITY MODEL

According to the not enough of above prior art, the utility model provides a seamless heterotypic sleeve of chain, its life that can improve the chain improves the initial stage extension of chain.

The utility model provides a technical scheme that technical problem adopted does: the utility model provides a seamless heterotypic sleeve of chain, heterotypic telescopic lateral wall is straight arm-type, and its inner wall constitutes two tubaeform openings that use heterotypic telescopic central horizontal cross section to become mirror symmetry from top to bottom as the symmetric center, two tubaeform opening is carried on the back mutually, two tubaeform open-ended department of meeting lateral wall smooth transition.

Furthermore, the upper horn-shaped opening is a structure with an upper end opening and a large lower end opening formed after rotating for one circle in a parabolic track.

Furthermore, the inner side wall of the joint of the upper horn-shaped opening and the lower horn-shaped opening is perpendicular to the central horizontal cross section of the special-shaped sleeve.

Furthermore, the special-shaped sleeve is made of low-carbon alloy steel.

The utility model discloses following beneficial effect has: the special-shaped sleeve of the utility model is arranged in the chain, when the chain is arranged in the turning machine to work, the special-shaped sleeve is in line friction contact with the pin shaft, and compared with the point friction mode between the sleeve and the pin shaft in the prior art, the friction force is reduced, the abrasion loss is reduced, and the service life of the chain on the turning machine equipment is prolonged; meanwhile, the chain lengthening caused by point abrasion between the opening part of the common sleeve and the pin shaft in the prior art is avoided, so that the initial elongation of the chain is greatly improved, and the requirement of equipment is met.

Drawings

Fig. 1 is a schematic front longitudinal sectional view of a profile sleeve according to an embodiment of the present invention;

FIG. 2 is a schematic view of a chain structure using the special-shaped sleeve of the present invention;

FIG. 3 is a partially enlarged schematic view of a chain structure using the special-shaped sleeve of the present invention;

FIG. 4 is a schematic view illustrating a contact wear state between a conventional sleeve and a pin shaft;

FIG. 5 is a schematic view showing the state of contact wear between the special-shaped sleeve and the pin shaft according to the present invention;

in the figure: 1. the outer sheet 2, the inner sheet 3, the special-shaped sleeve 30, the common sleeve 31, the horn-shaped opening 4, the pin shaft 5 and the roller.

Detailed Description

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

The first embodiment is as follows:

as shown in fig. 1-5, a seamless heterotypic sleeve of chain, heterotypic sleeve 3's lateral wall is straight arm-type, and the lateral wall is the same with a common columniform lateral wall promptly, and its inner wall constitutes two loudspeaker form openings 31 that use heterotypic sleeve 3's central horizontal cross section to become mirror symmetry from top to bottom as the center of symmetry, two loudspeaker form opening 31 carries on the back mutually, two the lateral wall smoothness of meeting department of loudspeaker form opening 31 is excessive.

Further, the upper horn-shaped opening 31 has a structure in which an upper end opening and a larger lower end opening are formed after one rotation in a parabolic trajectory.

Further, the inner side wall of the junction of the upper flared opening 31 and the lower flared opening 31 is perpendicular to the central horizontal cross section of the special-shaped sleeve 3.

Further, the special-shaped sleeve 3 is made of low-carbon alloy steel.

Fig. 1-2 show a chain using a special-shaped sleeve 3, which includes an outer plate 1, an inner plate 2, a special-shaped sleeve 3, a pin 4 and a roller 5, wherein the outer plate 1 is in interference fit with the pin 4, the inner plate 2 is in interference fit with the special-shaped sleeve 3, the pin 4 is in clearance fit with the special-shaped sleeve 3, the chain is used on a turning machine, and the special-shaped sleeve 3 is in linear friction contact with the pin 4, so that friction is reduced, and the service life of the chain on the turning machine is prolonged. Through the special-shaped sleeve 3, the original point contact between the special-shaped sleeve 3 and the pin shaft 4 is upgraded to the line contact, the friction force is reduced, the abrasion loss is reduced, the service life of the chain is prolonged to two years from 6 months, and the service life is prolonged by 300%.

As shown in fig. 4, in the semi-finished chain product with the common sleeve 30 in the prior art, the abrasion between the top end of the common sleeve 30 and the pin shaft 4 is point contact abrasion, and because the contact area is small, the initial abrasion is serious, and the chain elongation is obvious;

as shown in figure 5, the chain semi-finished product is provided with the special-shaped sleeve 3, the top end of the special-shaped sleeve 3 and the pin shaft 4 move downwards to the middle part of the sleeve instead of the mouth part because of initial wear, the chain semi-finished product is worn in a linear contact manner, the initial wear is reduced because the contact area is increased, the chain elongation is greatly reduced, and the equipment requirements are met.

The above is the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent structures or equivalent processes that the contents of the specification and the drawings are used for conversion, or directly or indirectly applied to other related technical fields, all the same principles are included in the patent protection scope of the present invention.

Claims (4)

1. The utility model provides a seamless heterotypic sleeve of chain which characterized in that: the lateral wall of abnormal shape telescopic is straight arm-type, and its inner wall constitutes and uses the telescopic central horizontal cross section of abnormal shape to become two tubaeform openings of mirror symmetry about the symmetry center becomes, two tubaeform opening is carried on the back mutually, two the lateral wall smoothness of meeting department of tubaeform opening is excessive.

2. The seamless profiled sleeve of chain as claimed in claim 1, wherein: the upper horn-shaped opening is a structure with an upper end opening and a large lower end opening formed after rotating for a circle by a parabolic track.

3. The seamless profiled sleeve of chain as claimed in claim 1, wherein: the inner side wall of the joint of the upper horn-shaped opening and the lower horn-shaped opening is vertical to the central horizontal cross section of the special-shaped sleeve.

4. The seamless special-shaped sleeve for the chain as claimed in any one of claims 1 to 3, wherein: the special-shaped sleeve is made of low-carbon alloy steel.

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