Wear-resistant roller chain for motorcycle

Abstract

The utility model discloses a wear-resistant roller chain for a motorcycle. The wear-resistant roller chain comprises an inner chain plate, an outer chain plate, a pin shaft, a roller and a sleeve, the inner chain plate and the outer chain plate are connected through a pin shaft, a sleeve is sleeved on the outer side of the pin shaft, and a roller is sleeved on the outer side of the sleeve. The pin shaft comprises two half shafts connected through a threaded structure, an oil storage cavity is formed in the pin shaft, an oil injection hole is formed in the end of the pin shaft and communicated with the oil storage cavity, an oil channel is formed in the wall of the pin shaft, the oil storage cavity is communicated with one end of the oil channel, and a gap between the outer wall of the pin shaft and the inner wall of the sleeve is communicated with the other end of the oil channel. A spiral oil storage ring groove is formed between the outer wall of the sleeve and the inner wall of the roller, and the spiral directions are opposite. And sealing rings are arranged on the pin shafts and the sleeves between the inner chain plates and the outer chain plates. The two ends of the sleeve extend out of the side face of the inner chain plate, chamfers are arranged at the edges of the two ends, and the sealing rings are embedded into the chamfers. According to the utility model, a friction pair of the pin shaft and the sleeve can be effectively lubricated, and the abrasion is reduced, so that the service life of the chain is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycle chains, in particular to a wear-resistant roller chain for motorcycles. Background Art

[0002] As a common means of transportation, motorcycles have high requirements for the reliability and durability of the transmission system in daily use. The main failure mode of motorcycle transmission roller chains (referred to as motorcycle chains) is wear, so wear performance is an important indicator for evaluating the intrinsic quality of motorcycle chains. The key parts that affect the wear performance of motorcycle chains are carburized sleeves and pins. The normal wear of the chain occurs between the sleeve and the pin. When the chain is running, the lubricating oil between the sleeve and the pin is easy to be thrown out, and the loss of lubrication causes chain wear.

[0003] Therefore, the chain needs to be cleaned and lubricated regularly. The traditional lubrication method is to brush lubricating oil directly on the surface of the chain. A small amount of lubricating oil enters the friction pair through the gap between the pin and the sleeve, while most of the lubricating oil cannot completely fill the oil layer in the friction pair. The lost lubricating oil cannot be effectively replenished. Over time, dry friction occurs between the sleeve and the pin, causing further deterioration of the wear degree, affecting the transmission efficiency of the motorcycle and even causing safety hazards. Utility Model Content

[0004] The utility model aims to provide a wear-resistant roller chain for motorcycles, which can conveniently fill lubricating oil into the friction pair of a pin shaft and a sleeve, thereby maintaining the wear resistance of the chain.

[0005] The utility model adopts the following technical scheme to solve the above-mentioned problems: a wear-resistant roller chain for motorcycles, comprising an inner chain plate, an outer chain plate, a pin shaft, a roller and a sleeve, wherein the inner chain plate and the outer chain plate are connected by a pin shaft, a sleeve is sleeved on the outer side of the pin shaft, an end of the sleeve is plugged into the hole of the inner chain plate and a roller is sleeved on the outer side of the sleeve, the pin shaft comprises two half shafts connected by a threaded structure, an oil storage cavity is arranged in the pin shaft, and an oil filling hole is arranged at the end of the pin shaft, the oil filling hole is communicated with the oil storage cavity, an oil passage is opened on the wall of the pin shaft, the oil storage cavity is communicated with one end of the oil passage, and a gap between the outer wall of the pin shaft and the inner wall of the sleeve is communicated with the other end of the oil passage.

[0006] Preferably: an oil layer structure is provided between the outer wall of the sleeve and the inner wall of the roller, and both the outer wall of the sleeve and the inner wall of the roller are provided with spiral oil storage ring grooves, and the spiral directions of the two are opposite.

[0007] Preferably, a sealing ring is provided on the pin shaft and the sleeve between the inner link plate and the outer link plate.

[0008] Preferably, both ends of the sleeve extend out of the inner link plate side surface, and both ends are provided with chamfers along the edges, and the sealing ring is embedded in the chamfers.

[0009] Preferably, the end of the pin shaft is provided with a flange, and the flange is tightly fastened to the side of the outer link plate.

[0010] Preferably: a cover is provided at the end of the pin shaft, and the edge of the cover is wrapped outside the flange.

[0011] Preferably: the inner link plate and the outer link plate are made of 40Cr steel, which are quenched and tempered, and the surface is coated with a hard chrome or nickel plating layer; the pin shaft and the sleeve are made of GCr15 steel and are subjected to high-frequency quenching treatment.

[0012] Compared with the prior art, the utility model has the following advantages and effects:

[0013] The pin shaft of the utility model includes through holes opened by the threaded structures of two half shafts, which are aligned after being threadedly connected and combined to form a complete oil passage for the pin shaft, the oil passage is connected to the oil storage chamber, and the oil storage tank is connected to the oil filling hole. When the motorcycle is running for a long time, the lubricating oil between the pin shaft and the shaft sleeve is thrown out during use of its chain, so it is necessary to clean and replenish the lubricating oil regularly. Lubricating oil is injected into the oil storage chamber through the oil filling hole at one end of the pin shaft, and the lubricating oil flows into the gap between the pin shaft and the sleeve through the oil passage to realize the lubricating oil replenishment of the hinge friction pair (between the pin shaft and the sleeve). Compared with the traditional method of adding lubricating oil by brushing the chain, only a small part of the lubricating oil can flow into the friction pair. The utility model directly fills the friction pair through the oil filling hole of the pin shaft, which can effectively reduce wear and improve the service life and transmission efficiency of the chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic structural diagram of a wear-resistant roller chain for motorcycles according to an embodiment of the utility model.

[0015] Figure 2 It is a cross-sectional view of a wear-resistant roller chain for motorcycles according to an embodiment of the utility model.

[0016] Figure numbers: inner link plate 1, outer link plate 2, pin shaft 3, half shaft 31, threaded structure 32, oil filling hole 33, oil storage chamber 34, oil channel 35, flange 36, roller 4, oil storage ring groove 41, sleeve 5, edge 51, sealing ring 6, cover 7. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0018] Example: See Figure 1 and Figure 2In the present embodiment, a wear-resistant roller chain 4 for motorcycles is provided, which is specifically used to improve the efficiency and durability of the motorcycle transmission system, and specifically comprises: an inner link plate 1, an outer link plate 2, a pin shaft 3, a roller 4 and a sleeve 5. The inner link plate 1 and the outer link plate 2 are connected by the pin shaft 3, and the outer side of the pin shaft 3 is sleeved with a sleeve 5. The end of the sleeve 5 is inserted into the hole of the inner link plate 1 and the outer side of the sleeve 5 is sleeved with a roller 4. The pin shaft 3 comprises two half shafts 31 connected by a threaded structure 32. An oil storage chamber 34 is provided in the pin shaft 3 at the threaded structure 32, and an oil filling hole 33 is provided at the end of the pin shaft 3. The oil filling hole 33 is communicated with the oil storage chamber 34. An oil passage 35 is opened on the wall of the pin shaft 3. The oil storage chamber 34 is communicated with one end of the oil passage 35, and the gap between the outer wall of the pin shaft 3 and the inner wall of the sleeve 5 is communicated with the other end of the oil passage 35.

[0019] Specifically, in this embodiment, the pin shaft 3 of the utility model includes two through holes opened by the threaded structures 32 of the half shafts 31, which are aligned after being threadedly connected and combined to form a complete oil passage 35 of the pin shaft 3, the oil passage 35 is connected to the oil storage chamber 34, and the oil storage tank is connected to the oil filling hole 33. When the motorcycle is running for a long time, the lubricating oil between the pin shaft 3 and the sleeve is thrown out during the transmission process of its roller chain, so it is necessary to clean and replenish the lubricating oil regularly. Lubricating oil is injected into the oil storage chamber 34 through the oil filling hole 33 at one end of the pin shaft 3, and the lubricating oil flows into the gap between the pin shaft 3 and the sleeve 5 through the oil passage 35, so as to replenish the lubricating oil of the hinge friction pair (between the pin shaft 3 and the sleeve 5), and the injection is continued until the lubricating oil overflows from between the pin shaft 3 and the sleeve, indicating that the lubricating oil has been filled. Compared with the traditional method of adding lubricating oil by brushing the chain, in which only a small part of the lubricating oil can flow into the friction pair, the utility model directly fills the friction pair through the oil filling hole 33 of the pin shaft 3, which can effectively reduce wear and tear and improve the service life and transmission efficiency of the chain.

[0020] An oil layer structure is provided between the outer wall of the sleeve 5 and the inner wall of the roller 4. The outer wall of the sleeve 5 and the inner wall of the roller 4 are both provided with a spiral oil storage ring groove 41. The spiral directions of the two are opposite, so that the lubricating oil can be distributed along the spiral groove by centrifugal force when the roller 4 rotates, thereby effectively transferring the lubricating oil to the contact surface between the outer wall of the sleeve 5 and the inner wall of the roller 4 to form an oil layer. The oil layer between the outer wall of the sleeve 5 and the inner wall of the roller 4 is incompressible, so that the outer wall of the sleeve 5 and the inner wall of the roller 4 are always supported by the oil layer. The oil layer can not only achieve lubrication between the outer wall of the sleeve 5 and the inner wall of the roller 4, reduce friction, reduce wear and increase the service life of the chain. It also helps to reduce the heat generated by the sleeve 5 and the roller 4 during operation through heat conduction, maintains the temperature stability of the chain, and avoids the degradation of material properties and aggravated wear caused by high temperature.

[0021] The pin shaft 3 and the sleeve 5 between the inner link plate 1 and the outer link plate 2 are provided with a sealing ring 6. The setting of the sealing ring 6 effectively prevents the intrusion of dust and the leakage of lubricating oil, keeps the cleanliness and lubrication between the pin shaft 3 and the sleeve, and thus avoids abrasive wear of the friction pair. The two ends of the sleeve 5 extend out of the side of the inner link plate 1, and the edges 51 at both ends are chamfered, and the sealing ring 6 is embedded in the chamfer. The sealing ring 6 is embedded in the chamfer, which improves the sealing effect of the hinge friction pair (between the pin shaft 3 and the sleeve). In addition, the sealing ring 6 is also provided between the inner link plate 1 and the outer link plate 2, and between the inner link plate 1 and the roller 4. For the relatively bad road conditions (more dust and gravel), it can effectively prevent dust and sand from falling into the hinge pair of the chain to cause chain wear.

[0022] The end of the pin shaft 3 is provided with a flange 36, which is tightly fastened to the side of the outer link plate 2. The end of the pin shaft 3 is provided with a cover 7, and the edge of the cover 7 is wrapped outside the flange 36. The two ends of the pin shaft 3 in this embodiment are provided with a flange 36 structure, and the outer diameter of the flange 36 structure is larger than the aperture of the outer link plate 2, which can effectively avoid the problem of chain breakage caused by the outer link plate 2 falling out when the motorcycle is running. In addition, the cover 7 can not only prevent the lubricating oil from flowing out of the oil filling hole 33, but also prevent impurities such as dust from entering the inside of the pin shaft 3 from the oil filling hole 33, thereby ensuring the cleanliness of the lubricating oil in the oil storage cavity 34 in the pin shaft 3 and extending the service life of the chain.

[0023] The inner link plate 1 and the outer link plate 2 are made of 40Cr steel, and are quenched and tempered to increase the wear resistance of the inner link plate 1 and the outer link plate 2. The surfaces of the inner link plate 1 and the outer link plate 2 are coated with a hard chrome or nickel plating layer, which helps to reduce the energy loss caused by friction and improve the operation efficiency of the chain; the pin shaft 3 and the sleeve 5 are made of GCr15 steel, which has good wear resistance and high contact fatigue performance. The pin shaft 3 and the sleeve 5 are subjected to high-frequency quenching treatment, so that the surface hardness and wear resistance of the pin shaft 3 and the sleeve 5 are greatly improved, which serves as the basic condition for the reliability and durability of the wear-resistant roller 4 chain for motorcycles of the utility model under high load and high-speed operation conditions.

[0024] The above contents described in this specification are merely examples of the present utility model. Those skilled in the art of the present utility model may make various modifications or additions to the specific embodiments described, or replace them in similar ways, as long as they do not deviate from the contents of the present utility model specification or exceed the scope defined in the claims, they shall all fall within the protection scope of the present utility model.

Claims

1. A wear-resistant roller chain for motorcycles, comprising an inner link plate, an outer link plate, a pin, a roller and a sleeve, wherein the inner link plate and the outer link plate are connected by a pin, a sleeve is sleeved on the outer side of the pin, an end of the sleeve is inserted into a hole of the inner link plate and a roller is sleeved on the outer side of the sleeve, characterized in that: The pin shaft comprises two half shafts connected by a threaded structure, an oil storage chamber is arranged inside the pin shaft, and an oil filling hole is arranged at the end of the pin shaft, the oil filling hole is communicated with the oil storage chamber, an oil channel is opened on the wall of the pin shaft, the oil storage chamber is communicated with one end of the oil channel, and the gap between the outer wall of the pin shaft and the inner wall of the sleeve is communicated with the other end of the oil channel.

2. A wear-resistant roller chain for motorcycle according to claim 1, characterized in that: An oil layer structure is arranged between the outer wall of the sleeve and the inner wall of the roller. Both the outer wall of the sleeve and the inner wall of the roller are provided with spiral oil storage ring grooves, and the spiral directions of the two are opposite.

3. A wear-resistant roller chain for motorcycle according to claim 2, characterized in that: A sealing ring is arranged on the pin shaft and the sleeve between the inner link plate and the outer link plate.

4. A wear-resistant roller chain for motorcycle according to claim 3, characterized in that: The two ends of the sleeve extend out of the inner link plate side, and the edges of the two ends are provided with chamfers, and the sealing ring is embedded in the chamfers.

5. A wear-resistant roller chain for motorcycle according to claim 4, characterized in that: The end of the pin shaft is provided with a flange.

6. A wear-resistant roller chain for motorcycle according to claim 5, characterized in that: The end of the pin shaft is provided with a sealing cover, and the edge of the sealing cover is wrapped outside the flange.

7. A wear-resistant roller chain for motorcycle according to claim 6, characterized in that: The inner link plate and the outer link plate are made of 40Cr steel, which are quenched and tempered, and the surface is coated with a hard chrome or nickel plating layer; the pin shaft and the sleeve are made of GCr15 steel and are subjected to high-frequency quenching treatment.

Images