A driving chain for ADV locomotive

Abstract

An ADV locomotive drive chain belongs to the technical field of chain transmission, and includes a chain body, wherein the chain body includes an inner chain plate, an outer chain plate, a sleeve, a pin, and a roller. The chain body is provided with a sealing ring, and the side wall section of the sealing ring is L-shaped, including an annular plane sealing structure located on the outside, and a cylindrical radial sealing structure extending inward along the inner hole of the annular plane sealing structure. The inner and outer surface sections of the sealing ring are W-shaped structures, and the W-shaped structure is a plurality of annular sealing edges coaxial with the sealing ring. The two ends of the sleeve are interference-fitted with the connecting hole of the inner chain plate, and the pin passes through the sleeve and is interference-fitted with the connecting hole of the outer chain plate. A mutually cooperating sealing space is provided between the sleeve and the pin, and the annular plane sealing structure is provided between the inner and outer chain plates, and the cylindrical radial sealing structure is used in conjunction with the sealing space. The novel type can ensure the structural strength of the chain body and improve the service life of the chain body by improving the pin, sleeve, and sealing ring structure.

Description

Technical Field

[0001] The invention belongs to the technical field of chain transmission, and specifically relates to a driving chain for an ADV locomotive. Background Art

[0002] ADV motorcycles (adventure motorcycles or cars) have high requirements on the life and strength of chain products. Usually, the way to improve the life and strength of such chains is to set a sealing ring. The function of the sealing ring can not only prevent external dust from invading the gap between the sleeve and the pin shaft, but also prevent the internal grease from being thrown out. Therefore, the sealing of the sealing ring can effectively reduce the wear between the pin shaft and the sleeve, ensure the strength of the chain, and improve the service life of the chain.

[0003] However, the design of the existing sealing ring oil seal chain has the following defects:

[0004] 1. The sealing ring is mostly set between the inner link plate and the outer link plate, and the sealing position is single, resulting in poor sealing effect.

[0005] 2. The gap between the inner link plate and the outer link plate is large, resulting in a large contact area between the sealing ring and the air. Over time, the surface of the sealing ring is in direct contact with water, sand, and stone in the air, which can easily lead to cracking, aging, and tearing of the surface of the sealing ring, and even cause the sealing ring to fail. Utility Model Content

[0006] In view of the problems of the prior art, the present invention discloses an ADV locomotive drive chain, the purpose of which is to solve the problems 1 and 2 described in the background technology.

[0007] To achieve the above purpose, the novel technical solution used is:

[0008] An ADV locomotive drive chain comprises a chain body, wherein the chain body comprises an inner link plate, an outer link plate, a sleeve and a pin shaft, the chain body is provided with a sealing ring, the side wall section of the sealing ring is L-shaped, comprising an annular plane sealing structure located on the outside, and a cylindrical radial sealing structure extending inwardly along the inner hole of the annular plane sealing structure, the inner and outer surface sections of the sealing ring are W-shaped structures, the W-shaped structure is a plurality of annular sealing edges coaxial with the sealing ring, the two ends of the sleeve are interference fit with the connecting hole of the inner link plate, the pin shaft passes through the sleeve and is interference fit with the connecting hole of the outer link plate, a mutually cooperating sealing space is provided between the sleeve and the pin shaft, the annular plane sealing structure is arranged between the inner and outer link plates, and the cylindrical radial sealing structure is used in conjunction with the sealing space.

[0009] Preferably, the chain body also includes rollers, and the two ends of two sleeves arranged side by side are respectively interference fit with the two connecting holes of the inner link plate, the rollers are clearance fit outside the sleeves and constitute inner chain links, and the two ends of two pins arranged side by side are respectively interference fit with the two connecting holes of the outer link plate and constitute outer chain links, and the two pins of the outer chain links pass through the sleeves of adjacent inner chain links and are clearance fit with the sleeves.

[0010] Preferably, the sealing space includes a first annular groove provided at both ends of the inner surface of the sleeve by expanding the diameter, a second annular groove is provided on the outer wall of the pin shaft opposite to the first annular groove, and the cylindrical radial sealing structure is constrained between the first annular groove and the second annular groove.

[0011] Preferably, the annular plane sealing structure is sleeved outside the pin shaft between the inner link plate and the outer link plate, the inner surface of the annular plane sealing structure is in contact with the outer surface of the inner link plate and the end of the sleeve, and the outer surface is in contact with the inner surface of the outer link plate.

[0012] Preferably, the outer end of the sleeve is flush with the outer surface of the inner link plate, and the maximum thickness of the annular plane sealing structure is H, and the gap between the inner and outer link plates is H1, H1 = 50%*H.

[0013] Preferably, the outer diameter of the pin is d, the inner diameter of the first annular groove is D1, D1 = 120% * d, the depth of the first annular groove is H2, H2 = 115% * H, and H2 matches the height H3 of the second annular groove.

[0014] Preferably, H3=110%*H, and the diameter of the second annular groove D2=90%*d; the cylindrical radial sealing structure is tightly matched with the first annular groove and the second annular groove to form an oil sealing structure.

[0015] Preferably, the sealing ring is made of carboxyl nitrile material.

[0016] The beneficial effects of this new ADV locomotive drive chain are:

[0017] 1. The sealing ring of the present invention is provided with a circular annular plane sealing structure 51 and an integrally formed cylindrical radial sealing structure 52. The inner and outer surface cross-sections of the sealing ring 5 are W-shaped structures, which can realize double annular groove sealing between the first annular groove and the second annular groove. Furthermore, the side wall section of the overall structure of the sealing ring is L-shaped, and the outer surface is provided with a W-shaped structure, which can realize L+W dual-form sealing. At the same time, the W-shaped structure of the inner and outer surfaces can realize W-type double sealing effect, that is, the present invention realizes a 2+2+2=6-fold oil sealing effect, which significantly improves the oil sealing capacity.

[0018] 2. This new type allows the inner and outer chain plates to fit with a small gap, reducing the surface area of ​​the sealing ring exposed to the air and increasing the service life of the sealing ring. At the same time, the small gap fit also avoids excessive compression of the sealing ring by the inner and outer chain plates, improves the single-section frame accuracy and side clearance accuracy, thereby improving fatigue resistance and dynamic performance.

[0019] 3. Through the above design, the new type can ensure the structural strength of the chain body and improve the service life of the chain body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 , a schematic diagram of the three-dimensional structure of the new chain body;

[0021] Figure 2 , a front view structural diagram of the new chain body;

[0022] Figure 3 , a schematic diagram of the local structure of the new model at A;

[0023] Figure 4 , a schematic diagram of the cross-sectional structure of the novel pin;

[0024] Figure 5 , a schematic diagram of the local structure of the new model at B;

[0025] Figure 6 , a schematic diagram of the cross-sectional structure of the sealing ring of the present invention (showing the L+W type composite form);

[0026] Figure 7 , a schematic diagram of the cross-sectional structure of the new sleeve;

[0027] 1. Outer link plate; 2. Inner link plate; 3. Roller; 4. Pin; 5. Sealing ring; 51. Circular plane sealing structure; 52. Cylindrical radial sealing structure; 6. Sleeve; 7. Pin end; 8. Second annular groove; 9. Sleeve end; 10. First annular groove. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] Example 1

[0031] An ADV locomotive drive chain, such as Figure 1-7As shown, it includes a chain body, the chain body includes an inner link plate 2, an outer link plate 1, a sleeve 6, a pin 4, and the chain body is provided with a sealing ring 5. Figure 3 , 6 As shown, the side wall section of the sealing ring 5 is L-shaped, including an annular plane sealing structure 51 located on the outside and a cylindrical radial sealing structure 52 extending inward along the inner hole of the annular plane sealing structure 51. The inner and outer surface sections of the sealing ring 5 are W-shaped structures. The W-shaped structure is a plurality of annular sealing edges coaxial with the sealing ring 5. The two ends of the sleeve 6 are interference fit with the connecting holes of the inner link plate 2. The pin shaft 4 passes through the sleeve 6 and is interference fit with the connecting holes of the outer link plate 1. A sealing space that cooperates with each other is provided between the sleeve 6 and the pin shaft 4. The annular plane sealing structure 51 is provided between the inner and outer link plates, and the cylindrical radial sealing structure 52 is used in conjunction with the sealing space.

[0032] In this embodiment, the annular plane sealing structure 51 is arranged between the inner and outer chain plates, and the cylindrical radial sealing structure 52 is used in conjunction with the sealing space, which changes the limitation of the traditional sealing ring being installed between the inner and outer chain plates and achieves a better sealing effect. At the same time, by improving the sleeve and the pin structure, a sealing ring structure is also introduced between the sleeve and the pin, that is, a cylindrical radial sealing structure, which can fully seal the grease between the sleeve and the pin, ensure the lubrication effect of the chain, and avoid the strength reduction caused by rapid wear.

[0033] Example 2

[0034] like Figure 1 , 2 As shown, the chain body also includes rollers 3, two ends of two sleeves 6 arranged side by side are respectively interference fit with the two connecting holes of the inner link plate 2, the rollers 3 are clearance fit outside the sleeves 6, and constitute inner chain links, two ends of two pins 4 arranged side by side are respectively interference fit with the two connecting holes of the outer link plate 1, and constitute outer chain links, and the two pins of the outer chain links pass through the sleeves 6 of adjacent inner chain links and are clearance fit with the sleeves 6.

[0035] This embodiment provides the basic structure of the chain body.

[0036] Example 3

[0037] like Figure 2-7 As shown, the sealing space includes a first annular groove 10 which is arranged at both ends of the inner surface of the sleeve by expanding the diameter, and a second annular groove 8 is arranged on the outer wall of the pin shaft 4 opposite to the first annular groove 10, and the cylindrical radial sealing structure 52 is constrained between the first annular groove 10 and the second annular groove 8.

[0038] Conventionally, the pin shaft and the sleeve end are clearance-fitted, and a sealing ring structure cannot be inserted, which causes the lubricating oil to easily flow out from the gap between the two, resulting in rapid wear between the pin shaft and the sleeve due to reduced lubricating oil. The present invention forms a sealing space by providing a first annular groove and a second annular groove, and introduces a cylindrical radial sealing structure 52 in the sealing space, which can prevent the lubricating oil between the sleeve and the pin shaft from flowing out from both ends.

[0039] Example 4

[0040] like Figure 3 As shown, the annular plane sealing structure 51 is sleeved outside the pin shaft 4 between the inner link plate 2 and the outer link plate 1, and the inner surface of the annular plane sealing structure 51 is in contact with the outer surface of the inner link plate 2 and the end of the sleeve 6, and the outer surface is in contact with the inner surface of the outer link plate 1.

[0041] Example 5

[0042] like Figure 3 , 6 As shown, the outer end of the sleeve 6 is flush with the outer surface of the inner link plate 2, and the maximum thickness of the annular plane sealing structure 51 is H, and the gap between the inner and outer link plates is H1, H1 = 50%*H.

[0043] In this embodiment, through the above design, the inner and outer link plates can be matched with a small gap H1 (compared with the inner and outer link plate gap of a conventional sealing ring chain) to avoid excessive air exposure area of ​​the sealing ring due to excessive gap, thereby avoiding premature failure caused by direct contact between the sealing ring and water, sand and stone in the air.

[0044] Example 6

[0045] like Figure 2-7 As shown, assuming that the outer diameter of the pin is d, the inner diameter of the first annular groove is D1, D1 = 120% * d, and the depth of the first annular groove is H2, H2 = 115% * H, and the H2 matches the height H3 of the second annular groove.

[0046] Example 7

[0047] like Figure 2-7 As shown, H3=110%*H, the diameter of the second annular groove D2=90%*d; the cylindrical radial sealing structure is closely matched with the first annular groove and the second annular groove to form an oil sealing structure.

[0048] Example 8

[0049] like Figure 1 , 2 As shown in , 3 and 6, the sealing ring 5 is made of carboxyl nitrile material.

[0050] The sealing ring of the present invention is provided with a circular annular plane sealing structure 51 and an integrally formed cylindrical radial sealing structure 52. The inner and outer surface sections of the sealing ring 5 are W-shaped structures, which can realize the double annular groove sealing between the first annular groove and the second annular groove. Furthermore, the side wall section of the overall structure of the sealing ring is L-shaped, and the outer surface is provided with a W-shaped structure, which can realize L+W dual-form sealing. At the same time, the W-shaped structure of the inner and outer surfaces can also realize the W-type double sealing effect, that is, the present invention realizes the 2+2+2=6-fold oil sealing effect, which significantly improves the oil sealing capacity. On this basis, the inner and outer chain plates are matched with a small gap, which can reduce the area of ​​the sealing ring exposed to the air, reduce the direct contact with water, sand, and stone, and extend the service life of the sealing ring. At the same time, the small gap match can also reduce the axial movement amplitude of the inner single section, avoid excessive compression of the sealing ring, and ensure the stability of the chain structure.

Claims

1. An ADV locomotive drive chain, characterized in that: it includes a chain body, the chain body includes an inner link plate, an outer link plate, a sleeve, and a pin shaft, the chain body is provided with a sealing ring, the side wall section of the sealing ring is L-shaped, including a circular ring-shaped plane sealing structure located on the outside, and a cylindrical radial sealing structure extending inward along the inner hole of the circular ring-shaped plane sealing structure, the inner and outer surface sections of the sealing ring are W-shaped structures, and the W-shaped structure is a plurality of annular sealing edges coaxial with the sealing ring, the two ends of the sleeve are interference fit with the connecting hole of the inner link plate, the pin shaft passes through the sleeve and is interference fit with the connecting hole of the outer link plate, a mutually cooperating sealing space is provided between the sleeve and the pin shaft, the circular ring-shaped plane sealing structure is arranged between the inner and outer chain plates, and the cylindrical radial sealing structure is used in conjunction with the sealing space.

2. The ADV motorcycle drive chain according to claim 1, characterized in that: The chain body also includes rollers, and the two ends of two sleeves arranged side by side are respectively interference fit with the two connecting holes of the inner link plate, and the rollers are clearance fit outside the sleeves to form inner chain links. The two ends of two pins arranged side by side are respectively interference fit with the two connecting holes of the outer link plate to form outer chain links, and the two pins of the outer chain links pass through the sleeves of adjacent inner chain links and are clearance fit with the sleeves.

3. An ADV locomotive drive chain as described in claim 2, characterized in that: the sealing space includes a first annular groove arranged at both ends of the inner surface of the sleeve through expansion, a second annular groove is arranged on the outer wall of the pin shaft opposite to the first annular groove, and the cylindrical radial sealing structure is constrained between the first annular groove and the second annular groove.

4. An ADV motorcycle drive chain as claimed in claim 3, characterized in that: The annular plane sealing structure is sleeved outside the pin shaft between the inner link plate and the outer link plate, the inner surface of the annular plane sealing structure is in contact with the outer surface of the inner link plate and the end of the sleeve, and the outer surface is in contact with the inner surface of the outer link plate.

5. An ADV motorcycle drive chain as claimed in claim 4, characterized in that: The outer end of the sleeve is flush with the outer surface of the inner link plate. Assuming that the maximum thickness of the annular plane sealing structure is H, the gap between the inner and outer link plates is H1, and H1=50%*H.

6. An ADV motorcycle drive chain as claimed in claim 5, characterized in that: The outer diameter of the pin is d, the inner diameter of the first annular groove is D1, D1 = 120% * d, and the depth of the first annular groove is H2, H2 = 115% * H, and the H2 matches the height H3 of the second annular groove.

7. An ADV motorcycle drive chain as claimed in claim 6, characterized in that: The H3 is 110%*H, and the diameter of the second annular groove D2 is 90%*d; the cylindrical radial sealing structure is closely matched with the first annular groove and the second annular groove to form an oil sealing structure.

8. An ADV motorcycle drive chain as claimed in claim 7, characterized in that: The sealing ring is made of carboxyl nitrile material.

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