Oil seal chain with large oil storage capacity

Abstract

The utility model discloses an oil seal chain with large oil storage capacity, which comprises an inner chain plate and an outer chain plate, a pin shaft penetrates through the outer chain plate, a sleeve is arranged on the inner chain plate, the sleeve is sleeved on the pin shaft, a sealing ring is arranged between the inner chain plate and the outer chain plate, and an oil storage cavity is arranged on the sealing ring. The lubricating effect is reliable and the structure is simple.

Description

Technical Field

[0001] The utility model belongs to the technical field of chains, and specifically relates to an oil-sealed chain with a large oil storage capacity. Background Art

[0002] Currently, bushing chains and roller chains are commonly used in the industrial and motorcycle industries to transmit force and torque. In some applications, bushing chains or roller chains with oil seals are used. The oil seals trap grease between the bushing and the pin, providing lubrication for the chain bushing and pin.

[0003] Existing oil-sealed bushing and roller chains can only seal a small amount of lubricating oil or grease between the bushing and the pin. This oil or grease in the sealed space is lost during use. Consequently, during operation, the bushing and pin wear out faster due to insufficient lubrication, shortening the chain life and potentially causing tooth skipping.

[0004] Utility model patent number CN205877072U, published on January 11, 2017, discloses an oil-sealed harvesting chain. The chain comprises several interconnected fixed link units and several interconnected detachable link units. Both the fixed and detachable link units include connecting outer straight plates, inner link plates, and sleeves. O-rings are located between the connecting outer and inner link plates. The sleeves are fitted with rollers at both ends. A pin is located within the sleeves of the fixed link units, while a connecting pin is located within the sleeves of the detachable link units. One end of the connecting pin has a socket with a cotter pin. The connecting outer straight plates are shaped like an isosceles triangle, with blade teeth located along the waist of the connecting outer straight plates. This oil-sealed harvesting chain lacks a large oil storage area and lacks long-lasting, reliable lubrication. Utility Model Content

[0005] The utility model aims to address the deficiencies of the prior art and to provide an oil seal chain with a large oil storage area, reliable lubrication effect and simple structure, and with a large oil storage capacity.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The oil-sealed chain with a large oil storage capacity comprises an inner link plate and an outer link plate. The outer link plate is penetrated by a pin shaft. A sleeve is provided on the inner link plate. The sleeve is arranged on the pin shaft. A sealing ring is provided between the inner link plate and the outer link plate. An oil storage cavity is provided on the sealing ring.

[0008] The oil storage cavity is arranged on one side of the sealing ring close to the inner chain plate, and the oil storage cavity is annular.

[0009] A boss is provided in the middle of the oil storage cavity, and the pin shaft passes through the boss.

[0010] The two sides of the sealing ring respectively abut against the outer link plate and the inner link plate, and the thickness of the boss is smaller than the thickness of the sealing ring.

[0011] The boss and the sealing ring are an integral structure formed of a single material or multiple materials.

[0012] The oil storage cavity is evenly distributed with through holes.

[0013] The sleeve is sleeved with a roller.

[0014] The technical effects of the utility model are as follows: the oil seal chain with a large oil storage capacity of the utility model is adopted, the oil storage cavity of the sealing ring is reasonably designed, the oil storage area is expanded, so that it can seal more lubricating grease, avoiding the situation that the sleeve and the pin shaft will wear out due to insufficient lubrication, reducing the probability of chain failure, and extending the life of the chain; at the same time, a boss structure is designed on the sealing ring to ensure a large-capacity oil storage cavity, improve the installation stability of the sealing ring, make it difficult to make radial movement on the pin shaft, reduce the leakage loss of lubricating grease, and ensure long-term reliable lubrication effect; it also has the advantages of simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] This manual includes the following drawings, which show the following contents:

[0016] Figure 1 This is a half-section view of the oil seal chain with large oil storage capacity of the utility model;

[0017] Figure 2 This is a three-dimensional schematic diagram of the oil seal chain with large oil storage capacity of the utility model;

[0018] Figure 3 This is a schematic diagram of the sealing ring installation of the utility model;

[0019] Figure 4 It is a half-section view of the sealing ring of the utility model;

[0020] Figure 5 It is a three-dimensional schematic diagram of the sealing ring of the utility model;

[0021] Figure 6 It is a half-section view of the second sealing ring of the present invention.

[0022] The markings in the figure are: 1. inner link plate; 2. outer link plate; 3. pin shaft; 4. sleeve; 5. roller; 6. sealing ring; 7. oil storage chamber; 8. boss; 9. through hole. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the specific implementation methods of the present invention by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate their implementation.

[0024] like Figures 1 to 3 As shown, the oil-sealed chain with a large oil storage capacity includes an inner link plate 1 and an outer link plate 2. The outer link plate 2 is penetrated by a pin shaft 3. A sleeve 4 is provided on the inner link plate 1. The sleeve 4 is provided on the pin shaft 3. A sealing ring 6 is provided between the inner link plate 1 and the outer link plate 2, and an oil storage chamber 7 is provided on the sealing ring 6.

[0025] Sealing ring 6 is made of rubber, and its oil reservoir 7 is designed to create a cavity that can accommodate more lubricating grease. During chain production, the oil chamber sealed by sealing ring 6 can be filled with more grease. During chain use, this provides long-term and sufficient lubrication of sleeve 4 and pin 3, reducing wear on these two elements and chain elongation, significantly extending the chain's service life. Each chain unit in the entire chain utilizes this structure to ensure overall lubrication performance.

[0026] like Figure 1 As shown, the oil reservoir 7 is located on the side of the sealing ring 6 near the inner link plate 1. The oil reservoir 7 is annular. Since the sleeve 4 rotates relative to the pin 3, that is, the sleeve 4 and the inner link plate 1 are movable parts, the oil reservoir 7 is designed to face the inner link plate 1. The annular shape of the oil reservoir 7 allows for a larger amount of lubricating oil to flow between the pin 3 and the sleeve 4, achieving uniform lubrication.

[0027] like Figure 4 and Figure 5 As shown, a boss 8 is provided in the center of the oil reservoir 7, and the pin 3 extends through the boss 8. The design of the boss 8 forms two concentric rings on the sealing ring 6, with the oil reservoir 7 between the two rings serving as an oil storage area. The boss 8 facilitates the stable assembly of the sealing ring 6 on the pin 3, increasing the contact area and improving stability while ensuring a large oil storage area for the sealing ring 6. The stable installation of the sealing ring 6 using the boss 8 reduces radial relative movement of the sealing ring 6, minimizing grease leakage, providing longer-lasting lubrication for the chain, and enhancing chain durability.

[0028] like Figure 1 As shown, the sealing ring 6 abuts the outer link plate 2 and the inner link plate 1 on both sides, and the boss 8 is thinner than the sealing ring 6. With this structure, the boss 8 is thinner than the sealing ring 6, and the oil reservoir 7 has a relatively larger space. That is, the boss 8 does not contact the inner link plate 1, and does not hinder the lubricating oil in the oil reservoir 7 from entering the sleeve 4, ensuring reliable lubrication. The sealing ring 6 is located between the outer link plate 2 and the inner link plate 1 and is compressed, making it difficult for the lubricating grease in the oil reservoir 7 to leak, thus achieving long-term and reliable lubrication.

[0029] like Figure 3 and Figure 4 As shown, the boss 8 and the sealing ring 6 are an integral structure formed of a single material or multiple materials. The boss 8 and the sealing ring 6 are integrally formed, and the integrity is better.

[0030] like Figure 6 As shown, through holes 9 are evenly distributed on the oil storage chamber 7. The above structure is another structural form of the sealing ring 6. This structure provides through holes 9 on the basis of the oil storage chamber 7, which can further expand the space of the oil storage chamber 7 and increase the amount of lubricating oil that can be accommodated, so as to achieve a more lasting lubrication effect.

[0031] like Figure 1 and Figure 2 As shown, rollers 5 are mounted on sleeve 4. The length of rollers 5 is less than the axial spacing of the inner link plates 1. Rollers 5 primarily serve to reduce wear between sleeve 4 and the gear teeth, ensure good meshing between the chain and the gear teeth, and increase chain load capacity. In this structure, gaps are provided between the ends of rollers 5 and the inner link plates 1, ensuring smoother rotation and unimpeded movement of rollers 5.

[0032] This oil-sealed chain with a large oil storage capacity has a reasonable design of the oil storage cavity 7 of the sealing ring 6, which expands the oil storage area so that it can seal more lubricating grease, avoids the situation where the sleeve 4 and the pin shaft 3 are worn due to insufficient lubrication, reduces the probability of chain failure, and extends the service life of the chain; at the same time, a boss 8 structure is designed on the sealing ring 6 to ensure a large-capacity oil storage cavity 7 while improving the installation stability of the sealing ring 6, making it difficult for it to make radial movement on the pin shaft 3, reducing the leakage loss of lubricating grease, and ensuring long-term reliable lubrication effect; it also has the advantages of simple structure and low cost.

[0033] The above description of the present invention is provided as an example, in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any application of the above-described concepts and technical solutions of the present invention to other situations without modification, are all within the scope of protection of the present invention.

Claims

1. An oil seal chain with large oil storage capacity, characterized by: The invention comprises an inner link plate (1) and an outer link plate (2), wherein the outer link plate (2) is penetrated by a pin shaft (3), a sleeve (4) is provided on the inner link plate (1), and the sleeve (4) is provided on the pin shaft (3), a sealing ring (6) is provided between the inner link plate (1) and the outer link plate (2), and an oil storage chamber (7) is provided on the sealing ring (6).

2. The oil-sealed chain with large oil storage capacity according to claim 1, characterized in that: The oil storage chamber (7) is arranged on one side of the sealing ring (6) close to the inner link plate (1), and the oil storage chamber (7) is annular.

3. The oil-sealed chain with large oil storage capacity according to claim 2, characterized in that: A boss (8) is provided in the middle of the oil storage cavity (7), and the pin shaft (3) passes through the boss (8).

4. The oil-sealed chain with large oil storage capacity according to claim 3, characterized in that: The two sides of the sealing ring (6) respectively abut against the outer link plate (2) and the inner link plate (1), and the thickness of the boss (8) is smaller than the thickness of the sealing ring (6).

5. The oil-sealed chain with large oil storage capacity according to claim 4, characterized in that: The boss (8) and the sealing ring (6) are an integral structure formed of a single material or multiple materials.

6. The oil-sealed chain with large oil storage capacity according to any one of claims 1 to 5, characterized in that: Through holes (9) are evenly distributed on the oil storage cavity (7).

7. The oil-sealed chain with a large oil storage capacity according to claim 6, characterized in that: The sleeve (4) is sleeved with a roller (5).

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