High-strength wear-resistant sleeve chain applied to engine transmission

Abstract

A high-strength wear-resistant sleeve chain applied to engine transmission belongs to the technical field of chain transmission and comprises a sleeve chain body composed of a plurality of inner single links and outer single links which are alternately connected, each inner single link comprises an inner chain plate and a sleeve, the outer edges of two connecting holes of each inner chain plate protrude outwards to form a limiting ring, and the outer edges of the outer connecting holes of each inner chain plate protrude outwards to form a sleeve. Inner holes in the two ends of the sleeves form annular limiting grooves through diameter expansion, one ends of the two inner chain plate limiting rings are oppositely arranged, the two sleeves are arranged between the two inner chain plates side by side, and the annular limiting grooves in the two ends of the sleeves are in interference fit with the corresponding limiting rings on the same side respectively. The utility model discloses a high-strength wear-resistant sleeve chain applied to engine transmission, which meets the use requirements under harsh service conditions through brand new design of a single link (an inner chain plate and a sleeve) in the chain.

Description

Technical Field

[0001] The invention belongs to the technical field of chain transmission, and specifically relates to a high-strength wear-resistant sleeve chain used for engine transmission. Background Art

[0002] The high-power and high-torque chain drive in the engine mainly uses the sleeve chain as the transmission medium. The sleeve of the commonly used sleeve chain is a cylindrical structure. In order to adapt to the size of the connection hole of the inner chain plate, the sleeve wall is relatively thin. However, due to the high power and torque of the engine transmission, the existing sleeve chain often fails due to the collision and fragmentation of the sleeve and the wear of the inner walls of both ends of the sleeve. In order to meet the needs of high-intensity use conditions of high-power and high-torque engine chain transmission, it is necessary to improve the existing sleeve chain. Utility Model Content

[0003] In view of the problems of the prior art, the present invention discloses a high-strength wear-resistant sleeve chain for engine transmission, which meets the use requirements under harsh service conditions by completely redesigning the single section (inner link plate + sleeve) in the chain.

[0004] To achieve the above purpose, the technical solution of this novel invention is:

[0005] A high-strength wear-resistant sleeve chain for engine transmission includes a sleeve chain body composed of a plurality of alternately connected inner single sections and outer single sections, wherein the inner single section includes an inner chain plate and a sleeve, the outer edges of two connecting holes of the inner chain plate protrude outward to form a limit ring, the inner holes at both ends of the sleeve are expanded to form annular limit grooves, one end of the limit rings of the two inner chain plates are arranged opposite to each other, and the two sleeves are arranged side by side between the two inner chain plates, and the annular limit grooves at both ends of the sleeve are respectively interference fit with the limit rings corresponding to the same side.

[0006] Preferably, the outer single section includes a pin shaft and an outer link plate, the two outer link plates are arranged opposite to each other, and the two pin shafts are arranged side by side between the two outer link plates. The ends of the pin shafts are respectively interference fit with the corresponding outer link plate connecting holes on the same side, and the pin shaft of the outer single section passes through the sleeve of the adjacent inner single section and is clearance fit with the sleeve.

[0007] Preferably, the sleeve is integrally formed by a powder metallurgy process, and the inner hole of the sleeve and the annular limiting grooves at both ends form an "I"-shaped structure.

[0008] Preferably, the wall of the sleeve is thickened relative to that of a conventional sleeve chain of the same specification, and the degree of thickening satisfies that: annular limit grooves are provided at both ends to provide interference fit between two limit rings, and the structural strength of the annular limit grooves and the limit rings is greater than or equal to the structural strength of the conventional sleeve and the inner link plate connecting hole.

[0009] Preferably, the inner hole diameter of the sleeve, the inner hole diameter of the limiting ring, and the connecting hole diameter of the inner link plate are the same.

[0010] The beneficial effects of the new high-strength wear-resistant sleeve chain used for engine transmission are as follows:

[0011] 1. The inner hole of the sleeve and the annular limit grooves at both ends of the new type form an "I"-shaped structure. The edge of the connecting hole of the inner chain plate is provided with a limit ring that cooperates with the annular limit groove. The inner single-section inner section inner width frame dispersion fluctuation formed after the sleeve and the inner chain plate are assembled can be controlled within 0.05mm, reducing the risk of the sprocket teeth biting the chain plate at the inner section during the meshing process of the chain and the sprocket.

[0012] 2. The wall thickness of the new sleeve is thicker than that of the conventional sleeve chain of the same specification, which can prevent the sleeve from being hit and broken by the sprocket during use, thereby increasing the service life of the sleeve and the sleeve chain.

[0013] 3. The new inner link plate is interference-fitted to the end of the sleeve through a limit ring, which avoids the wear between the pin and the end of the sleeve caused by the "necking" of the sleeve at both ends due to assembly and the uncontrollable roughness of the sleeve inner wall caused by the "necking" caused by the traditional technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 , schematic diagram of the overall structure of the new model - main view.

[0015] Figure 2 , schematic diagram of the overall structure of the new model - top view.

[0016] Figure 3 , schematic diagram of the exploded parts of the new model - front view.

[0017] Figure 4 , schematic diagram of the parts breakdown of the new model - top view.

[0018] 1. Inner link plate; 11. Limiting ring; 2. Outer link plate; 3. Pin shaft; 4. Sleeve; 41. Annular limiting groove. DETAILED DESCRIPTION

[0019] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0020] The following embodiments may be understood as a part of a local structure or method that is expressed separately in the present invention, or may be understood as a combination of the embodiments to explain the connotation of a larger structure or method of the present invention.

[0021] Example 1

[0022] A high-strength wear-resistant bushing chain for engine transmission, such as Figure 1-4 As shown, it includes a sleeve chain body composed of a plurality of alternately connected inner single sections and outer single sections, the inner single section includes an inner link plate 1 and a sleeve 4, the outer edges of the two connecting holes of the inner link plate 1 protrude outward to form a limit ring 11, and the inner holes at both ends of the sleeve 4 are expanded to form annular limit grooves 41, one end of the limit rings 11 of the two inner link plates 1 are arranged opposite to each other, and the two sleeves 4 are arranged side by side between the two inner link plates 1, and the annular limit grooves 41 at both ends of the sleeve 4 are respectively interference fit with the corresponding limit rings 11 on the same side.

[0023] Example 2

[0024] like Figure 1-4 As shown, the outer single section includes a pin shaft 3 and an outer link plate 2. The two outer link plates 2 are arranged opposite to each other. The two pin shafts 3 are arranged side by side between the two outer link plates 2. The ends of the pin shafts 3 are respectively interference fit with the corresponding connecting holes of the outer link plates 2 on the same side. The pin shaft 3 of the outer single section passes through the sleeve 4 of the adjacent inner single section and is clearance fit with the sleeve 4.

[0025] Example 3

[0026] like Figure 1 As shown, the sleeve 4 is integrally formed by a powder metallurgy process, and the inner hole of the sleeve 4 and the annular limiting grooves 41 at both ends form an "I"-shaped structure.

[0027] Example 4

[0028] like Figure 1-4 As shown, the wall of the sleeve 4 is thickened relative to the sleeve of a conventional sleeve chain of the same specification, and the degree of thickening satisfies: annular limit grooves 41 are provided at both ends to be interference fit between two limit rings 11, and the structural strength of the annular limit grooves 41 and the limit rings 11 is greater than or equal to the structural strength of the conventional sleeve and the inner chain plate connecting hole.

[0029] In this embodiment, the data of the relevant structural strength can be obtained through experiments, such as the length of time for the two ends of the sleeve to wear out and fail in the case of meshing transmission with the sprocket. On the other hand, according to the structure of the present invention, it can be inferred that the two ends of the sleeve of the present invention are assembled with the limit ring through the annular limit groove, while the two ends of the conventional sleeve can be directly in contact with the pin shaft. Therefore, according to the structure, it can be known that the present invention will not cause direct wear between the two ends of the sleeve and the pin shaft, and only the thickness of the tube wall at the two ends of the sleeve and the wall thickness of the limit ring can be controlled to achieve the required strength requirements. According to the assembly structure of the present invention, it can be known that in order to meet the requirements of "interference fit between the two limit rings 11 through the annular limit groove 41 at both ends" and "the structural strength of the annular limit groove 41 and the limit ring 11 is greater than or equal to the structural strength of the conventional sleeve and the inner chain plate connection hole", it is necessary to thicken the tube wall of the sleeve as a whole. Therefore, the structural strength of the sleeve of the present invention is significantly greater than that of the conventional sleeve, and the service life of the sleeve chain will be significantly improved.

[0030] Example 5

[0031] like Figure 1-4 As shown, in the above embodiment, the inner diameter of the stop ring can be selected to be larger than the diameter of the inner link plate connecting hole and the inner hole of the sleeve, which can store more lubricating oil, reduce the wear between the inner hole of the sleeve and the pin, and avoid direct contact with the pin. In this embodiment, the inner hole diameter of the sleeve, the inner hole diameter of the stop ring, and the connecting hole diameter of the inner link plate are set to be the same, that is, the pin is matched with the inner hole of the sleeve, the connecting hole of the inner link plate, and the inner hole of the stop ring.

Claims

1. A high-strength wear-resistant sleeve chain for engine transmission, characterized in that it comprises a sleeve chain body composed of a plurality of alternately connected inner single sections and outer single sections, wherein the inner single section comprises an inner chain plate and a sleeve, the outer edges of the two connecting holes of the inner chain plate protrude outward to form a limit ring, the inner holes at both ends of the sleeve are expanded to form annular limit grooves, one end of the limit rings of the two inner chain plates are arranged opposite to each other, and the two sleeves are arranged side by side between the two inner chain plates, and the annular limit grooves at both ends of the sleeve are respectively interference fit with the limit rings corresponding to the same side.

2. A high-strength wear-resistant bushing chain for engine transmission as claimed in claim 1, characterized in that: The outer single section includes a pin shaft and an outer link plate. The two outer link plates are arranged opposite to each other. The two pin shafts are arranged side by side between the two outer link plates. The ends of the pin shafts are respectively interference fit with the corresponding outer link plate connecting holes on the same side. The pin shaft of the outer single section passes through the sleeve of the adjacent inner single section and is clearance fit with the sleeve.

3. The high-strength wear-resistant bushing chain for engine transmission as claimed in claim 2, characterized in that: The sleeve is integrally formed by a powder metallurgy process, and the inner hole of the sleeve and the annular limiting grooves at both ends form an "I"-shaped structure.

4. A high-strength wear-resistant bushing chain for engine transmission as claimed in claim 3, characterized in that: The wall of the sleeve is thickened compared to the sleeve of a conventional sleeve chain of the same specification, and the degree of thickening satisfies: annular limit grooves are provided at both ends to be interference fit between two limit rings, and the structural strength of the annular limit grooves and the limit rings is greater than or equal to the structural strength of the conventional sleeve and the inner chain plate connecting hole.

5. The high-strength wear-resistant bushing chain for engine transmission as claimed in claim 4, characterized in that: The inner hole diameter of the sleeve, the inner hole diameter of the limiting ring, and the connecting hole diameter of the inner chain plate are the same.

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