CN210889927U

CN210889927U - Self-lubricating chain

Info

Publication number: CN210889927U
Application number: CN201922095824.2U
Authority: CN
Inventors: 张德耀
Original assignee: High-Tech Industrial Development Zone Chuanghong Machinery Factory
Current assignee: High-Tech Industrial Development Zone Chuanghong Machinery Factory
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-06-30
Anticipated expiration: 2029-11-28

Abstract

The utility model discloses a self-lubricating chain constitutes sleeve roller chain by inner plate, outer link joint, sleeve, round pin axle and roller, and the outer link joint inboard is equipped with soft gasket, and soft gasket is installed through two mounting holes to be side by side with the outer link joint and set up. Preferably, the sleeve is provided with an extension section extending out of the outer side surface of the inner chain plate; the soft gasket is respectively sleeved on the extension sections of the two sleeves through the two mounting holes and is in dynamic sealing connection with the extension sections; an oil storage tank is also formed between the joint surfaces of the soft gasket and the outer chain plate; the extension section extends into the oil storage tank. The beneficial effects of the utility model are that, utilize the sealing characteristic of soft gasket to form the end face seal at lubricated position to prepare lubricating medium through the oil storage tank, and sleeve extension section forms the self-lubricating effect that has automatic microcirculation, and simple structure, processing convenience, and lubricated good, chain long service life.

Description

Self-lubricating chain

Technical Field

The utility model relates to a chain structure, especially a self-lubricating chain that constitutes bush roller chain.

Background

The sleeve roller chain is composed of inner chain plates, outer chain plates, sleeves, pin shafts and rollers, the outer chain plates are fixed on the pin shafts, the inner chain plates are fixed on the sleeves, the rollers and the sleeves and the pin shafts form coaxial rotatable connection relations, and the chain wheel are mainly engaged by rolling friction, so that the sleeve roller chain is light in weight, long in service life, low in cost and wide in application in power transmission, for example, the existing motorcycles and bicycles usually adopt the chain and the chain wheel of the single-row sleeve roller chain to carry out power transmission. The failure mode of chain transmission mainly comprises the fatigue failure of a chain plate; impact fatigue damage of the roller and the sleeve, gluing of the pin shaft and the sleeve, abrasion of the chain pin shaft, overload breaking and the like. Because the chain transmission of the existing motorcycle belongs to typical open type transmission and is influenced by dual factors of bad use conditions and poor lubrication, the chain transmission of the motorcycle is easy to generate chain link abrasion and impact fatigue damage of a roller and a sleeve. Therefore, as for the open-type transmission chain, the lubricating medium can only be filled when the product is assembled, or can be filled periodically, so that how to ensure that the main friction wear link is well lubricated is a problem which needs to be solved urgently by the technical personnel in the field.

Disclosure of Invention

The utility model aims at providing a there is serious lubricated bad problem to open drive chain among the prior art, provides a self-lubricating chain to in the chain working process, utilize soft gasket's sealing characteristic, seal lubricated medium in rolling friction is vice, thereby improve lubricated condition, extension chain life.

In order to achieve the above object, the present invention provides the following solutions.

A self-lubricating chain is a sleeve roller chain consisting of an inner chain plate, an outer chain plate, a sleeve, a pin shaft and a roller, wherein a soft gasket is arranged on the inner side of the outer chain plate and is installed through two installation holes and arranged in parallel with the outer chain plate.

According to the self-lubricating chain adopting the technical scheme, the soft sealing gasket which is parallel to the outer chain plate is arranged on the inner side of the outer chain plate and covers or basically covers the inner side surface of the outer chain plate, so that the covering and shielding area is larger and the sealing effect is better compared with that of an O-shaped sealing ring. When sleeve length is injectd in the inner link board, can seal the fit clearance between inner link board mounting hole and the sleeve, also can seal the fit clearance between pin axle and the sleeve to including lubricating medium in will corresponding the clearance seals, reduce or eliminate lubricating medium seepage, increase of service life. In a chain structure in which the length of the sleeve is provided with a part extending out of the inner chain plate, the lubricating medium in the fit clearance between the inner chain plate mounting hole and the sleeve can be sealed.

Preferably, the sleeve is provided with an extension section extending out of the outer side surface of the inner chain plate; the soft gasket is respectively sleeved on the extension sections of the two sleeves through the two mounting holes and is in dynamic sealing connection with the extension sections; an oil storage tank is also formed between the joint surfaces of the soft gasket and the outer chain plate; the extension section extends into the oil storage tank. The lubricating medium in the fit clearance between the inner chain plate mounting hole and the sleeve is sealed by utilizing the sealing characteristic of the soft gasket, and meanwhile, the lubricating medium can be filled in the oil storage groove, so that the lubricating medium storage is provided for the rolling friction pair between the pin shaft and the sleeve, and the medium stored in the oil storage groove is sealed in the oil storage groove by utilizing the soft characteristic. The chain is at the operation in-process, through the change of atress situation, form the circumference contact position change between sleeve and the round pin axle, the lubricated medium that the clearance reduction part was extruded flows into the oil storage tank, the clearance increase part forms negative pressure adsorption, and then inhales lubricated medium, two pairs of round pin axles and the alternate atress in-process of sleeve on the same link joint, form the alternative of medium and extrude and inhale, thereby form inside microcirculation in the inslot, utilize lubricated medium formation self-lubricating in the oil storage tank, reach extension chain life's purpose. Wherein, the oil storage tank can be formed on the soft gasket and also can be formed on the outer chain plate, and the proper structural form and processing mode can be selected according to the processing conditions. When the punching die is arranged on the outer chain plate, the punching die can be formed in one step in the blanking process of the chain plate; when the soft gasket is arranged, the soft gasket can be formed by injection molding or punch molding according to different materials. Of course, the oil storage groove can be formed on the outer chain plate partially and on the soft gasket partially, so that the space can be enlarged, and the oil storage amount can be increased.

Preferably, the soft gasket is made of rubber, plastic or nylon, or is made of nonferrous metal. The purpose of sealing the lubricating medium is achieved by utilizing the soft characteristics of the materials, and corresponding materials and processing modes can be reasonably selected according to use requirements and processing conditions, for example, when plastic and nylon are selected, injection molding can be adopted, and when nonferrous metals are selected, punch forming can be adopted.

Further preferably, the oil reservoir is formed in the soft gasket. Therefore, the structure, the processing technology and the processing equipment of the outer chain plate do not need to be changed, and only a proper processing mode needs to be selected according to the gasket, so that the manufacturing cost is reduced.

Preferably, the oil storage tank is formed by communicating two circular counter bores. The oil storage structure has a simple structure and a reasonable oil storage space, and the circular arc structure is beneficial to prolonging the service life of the manufacturing die.

Further preferably, the diameter of the circular counter bore is larger than that of the extension section. So that the oil storage tank has a space completely surrounding the periphery of the end part of the extension section, the lubricating medium circulates sufficiently, and the lubricating effect is ensured.

More preferably, the depth of the oil storage groove is 1/3-1/2 times of the thickness of the soft gasket. So as to ensure the strength and the service life of the gasket on the premise of having enough oil storage space.

More preferably, the soft gasket has a thickness of 1.0mm to 1.5 mm. So as to form the comprehensive performance of good sealing effect, high gasket strength and long service life.

The utility model discloses following beneficial effect has: utilize the sealing characteristic of soft gasket to form the end face seal at lubricated position to prepare lubricating medium through the oil storage tank, and sleeve extension section forms the self-lubricating effect that has automatic microcirculation, and simple structure, processing convenience, it is lubricated good, chain long service life.

Drawings

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

Fig. 2 is a sectional view taken along line a-a of fig. 1 according to the present invention.

Fig. 3 is a schematic structural view of a soft gasket in example 1 of the present invention.

Fig. 4 is a schematic structural diagram of an outer link plate in embodiment 2 of the present invention.

Detailed Description

The present invention will be further described with reference to the following drawings, which are illustrative only for the purpose of disclosing and explaining the present invention in order to fully understand the present invention, but not to limit the present invention within the scope of the described embodiments.

Example 1, referring to fig. 1, 2, and 3, a self-lubricating chain is a bush roller chain comprising an inner link plate 1, an outer link plate 2, a bush 3, a pin 4, and a roller 5, wherein a soft gasket 6 is disposed on an inner side of the outer link plate 2, and the soft gasket 6 is installed through two installation holes and is juxtaposed to the outer link plate 2.

Wherein, soft gasket 6 soft gasket is moulded plastics by the nylon and forms, and oil storage tank 7 is formed on soft gasket 6. The oil storage tank 7 is formed by smooth communication of two circular counter bores, the middle section of the communication section is formed by a region between two opposite outer circular arcs, and the closer to the circular counter bores, the larger the distance between the two circular arcs is; the diameter of the circular counter bore is larger than the diameter of the extension section by about 1.0mm, namely the diameter of the circular counter bore is larger than the diameter of the extension section by about 0.5mm in the radial direction. The depth of the oil storage tank 7 is 1/3-1/2 times of the thickness of the soft gasket 6. And the thickness of the soft gasket 6 is 1.0mm to 1.5 mm.

In this embodiment, the communicating section between the two circular counter bores in the oil reservoir 7 may also be formed between two parallel lines to form a strip of equal width.

In this embodiment, the soft gasket 6 may also be made of rubber or plastic, and the plastic is injection molded; or may be stamped from a non-ferrous metal.

In example 2, referring to fig. 4, the oil reservoir 7 is formed in the outer link plate 2, and the depth of the oil reservoir 7 is close to or equivalent to the thickness of the soft gasket 6. Wherein, the diameter of the round counter bore is slightly larger than the pin shaft mounting hole on the outer chain plate 2, for example, the diameter is 0.5mm larger in the radius direction; the oil storage tank 7 can be formed at one time in the process of punch forming of the chain plate; the soft gasket 6 is of a flat gasket structure.

The rest of the structure of this embodiment is the same as that of embodiment 1, and is not described herein again.

Example 3, this example differs from examples 1 and 2 mainly in that the bushing 3 is of a non-extension structure with its outer end confined within the inner link plate 1, the outer link plate 2 and the soft gasket 6 are of flat plate-like structures, and no oil reservoir is provided between the two engaging surfaces. The rest of the structure is the same as that of

embodiment

1 or 2, and is not described herein again, and this embodiment is not shown in the drawings.

In example 4, the main difference between this example and example 3 is that the bushing 3 has an extension in the inner link plate 1, and the length of the extension is equal to the thickness of the soft gasket 6. The rest of the structure is the same as that of embodiment 3, and is not described herein again, and this embodiment is not shown in the drawings.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. A self-lubricating chain is a sleeve roller chain consisting of an inner chain plate (1), an outer chain plate (2), a sleeve (3), a pin shaft (4) and a roller (5), and is characterized in that a soft gasket (6) is arranged on the inner side of the outer chain plate (2), and the soft gasket (6) is installed through two installation holes and arranged in parallel with the outer chain plate (2).

2. The self-lubricating chain according to claim 1, characterized in that the bushing (3) has an extension projecting beyond the outer lateral surface of the inner link plate (1); the soft gasket (6) is respectively sleeved on the extension sections of the two sleeves (3) through the two mounting holes and is in dynamic sealing connection with the extension sections; an oil storage tank (7) is formed between the joint surfaces of the soft gasket (6) and the outer chain plate (2); the extension section extends into the oil storage tank (7).

3. Self-lubricating chain according to claim 1 or 2, characterized in that the soft shim (6) is made of rubber, plastic or nylon, or of non-ferrous metal.

4. Self-lubricating chain according to claim 2, characterized in that the oil reservoir (7) is formed on the soft shim (6).

5. Self-lubricating chain according to claim 2 or 4, characterized in that the oil reservoir (7) is formed by two circular counter bores communicating.

6. The self-lubricating chain of claim 5, wherein the diameter of the circular counterbore is greater than the diameter of the extender.

7. The self-lubricating chain of claim 4, wherein the oil storage groove (7) has a depth 1/3-1/2 times the thickness of the soft shim (6).

8. Self-lubricating chain according to claim 4, characterized in that the soft shim (6) has a thickness of 1.0mm to 1.5 mm.