Re-oilable sealing ring chain

Abstract

The chain of repeatable oiling sealing ring comprises outer chain plates, inner chain plates, pin shafts and sleeves, two outer chain plates are tightly assembled with two pin shafts to form outer chain links, two inner chain plates and two sleeves are combined to form inner chain links, the inner chain links are arranged between the two outer chain plates of the outer chain links, the sleeves are arranged outside the pin shafts and gaps are arranged between the sleeves and the pin shafts, rollers are arranged outside the sleeves between the two inner chain plates, oil injection channels are arranged between the sleeves and the outer chain plates for the entry of lubricating oil, sealing members for sealing the oil injection channels are arranged between the inner chain plates and the outer chain plates, and oil path openers for driving the sealing members to axially move to open or close the oil injection channels are arranged between the sealing members and the inner chain plates. The chain can switch between the sealed state and the unsealed state, so that the lubricating oil can be injected in the unsealed state, and the service life of the product is prolonged.

Description

Technical Field

[0001] This invention belongs to the field of chain technology, specifically relating to a chain with a reusable oil-sealing ring. Background Technology

[0002] The traditional design logic of sealing ring chains is: 1. Factory pre-lubricating: High-quality grease is precisely injected between the chain rollers and bushings at the factory.

[0003] 2. Sealing rings lock in the grease: The core function of the sealing rings (O-rings or X-rings) on both sides is to prevent the internal grease from flowing out, while also blocking external contaminants such as mud and moisture from entering.

[0004] The lifespan of a chain depends not on the fatigue of the metal itself, but on the lifespan of the non-replenishable grease inside. This is a logic of "planned obsolescence," which, from a resource utilization perspective, is a huge waste.

[0005] "One-time" lifecycle: Throughout its service life, the grease gradually depletes, deteriorates, and its performance declines. When users apply grease externally, the oil cannot effectively reach the core friction points that require lubrication (shoulder-sleeve clearances), only lubricating the outer joints of the chain, with limited effect. When the internal grease is depleted, the chain wears faster, leading to the end of its lifespan. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies, this invention proposes a reusable oiling sealing ring chain that can switch between sealed and non-sealed states, thereby enabling lubricant filling in the non-sealed state and extending the product's service life.

[0007] The technical solution adopted in this invention is: A reusable oil-sealed chain includes outer chain plates, inner chain plates, pins, and sleeves. Two outer chain plates and two pins are tightly fitted together to form an outer chain link. Two inner chain plates and two sleeves are combined to form an inner chain link. The inner chain link is located between the two outer chain plates of the outer chain link. The sleeve is sleeved outside the pins with a gap between the sleeve and the pins. Rollers are fitted around the sleeve between the two inner chain plates. An oil injection channel for lubricating oil is provided between the sleeve and the outer chain plates. A sealing element is provided between the inner chain plates and the outer chain plates to seal the oil injection channel. An oil circuit opener / closer is provided between the sealing element and the inner chain plates to drive the sealing element to move axially to open or close the oil injection channel.

[0008] Furthermore, the oil circuit opener / closer includes a sealing ring support plate and a lifting lock plate. The sealing element is installed on the sealing ring support plate, and the lifting lock plate is rotatably installed between the sealing ring support plate and the inner chain plate. When the lifting lock plate is in the locked position, the sealing ring support plate is supported and raised to close the oil injection channel. When the lifting lock plate is in the open position, the sealing ring support plate can descend to open the oil injection channel.

[0009] Furthermore, the upper surface of the sealing ring support plate is provided with two annular grooves that are matched and installed with the corresponding sealing elements.

[0010] Furthermore, the lower surface of each annular groove on the sealing ring support plate is provided with several annularly spaced protrusions.

[0011] Furthermore, the lifting locking plate has an opening portion that can be rotated outward and separated from the sealing ring support plate, and a rotating portion that is always in contact with the sealing ring support plate.

[0012] Furthermore, the opening part has a bayonet structure, which can be fastened to the outside of the corresponding sleeve.

[0013] Furthermore, the opening part has an operating part, which protrudes from the inner and outer links when in the locked position.

[0014] Furthermore, when the opening part is in the locked position, its upper surface contacts the protrusion to lift the sealing ring support plate; when it is in the open position, its upper surface separates from the sealing ring support plate to lower the sealing ring support plate.

[0015] Furthermore, the rotating part has a waist hole structure that corresponds one-to-one with the protrusion. When the lifting locking plate is in the locked position, the protrusion and the waist hole structure are misaligned to lift the sealing ring support plate. When the lifting locking plate is in the open position, the protrusion and the waist hole structure coincide to lower the sealing ring support plate.

[0016] Furthermore, the seal is fitted onto the outside of a sleeve or pin.

[0017] The beneficial effects of this invention are: it can switch between sealed and unsealed states, thereby enabling the addition of lubricating oil in the unsealed state and extending the service life of the product. Attached Figure Description

[0018] Figure 1 This is a top view of the structure of the present invention.

[0019] Figure 2 This is a partial cross-sectional front view schematic diagram of the present invention.

[0020] Figure 3 This is a schematic diagram of the sealing ring support plate of the present invention.

[0021] Figure 4 This is a cross-sectional view of the sealing ring support plate of the present invention.

[0022] Figure 5 This is a schematic diagram of the lifting locking plate of the present invention.

[0023] Figure 6 This is a cross-sectional view of the lifting locking plate of the present invention.

[0024] Figure 7 This is a top view of the oil passage opening / closing device of the present invention when locked.

[0025] Figure 8 This is a cross-sectional view of the present invention in a sealed state.

[0026] Figure 9 for Figure 8 A magnified structural diagram at point A.

[0027] Figure 10 This is a top view of the oil passage opening / closing device of the present invention when it is open.

[0028] Figure 11 This is a cross-sectional view of the present invention in an unsealed state.

[0029] Figure 12 for Figure 11 A magnified structural diagram at point B.

[0030] In the diagram: 1. Outer chain plate; 2. Inner chain plate; 3. Sleeve; 4. Pin; 5. Roller; 6. Seal; 7. Sealing ring support plate; 71. Annular groove; 72. Protrusion; 8. Lifting lock plate; 81. Opening part; 82. Rotating part; 83. Bayonet structure; 84. Operating part; 85. Waist hole structure; 9. Oil injection channel. Detailed Implementation

[0031] The present invention will be further described below with reference to specific embodiments, but the invention is not limited to these specific embodiments. Those skilled in the art should recognize that the present invention covers all alternatives, improvements, and equivalents that may be included within the scope of the claims.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] See Figure 1-4This embodiment provides a reusable oil-sealing chain, including an outer chain plate 1, an inner chain plate 2, a pin 4, and a sleeve 3. Two outer chain plates 1 and two pins 4 are tightly fitted together to form an outer chain link. Two inner chain plates 2 and two sleeves 3 are combined to form an inner chain link. The inner chain link is located between the two outer chain plates 1 of the outer chain link. The sleeve 3 is sleeved outside the pin 4, and there is a gap between the sleeve 3 and the pin 4. A roller 5 is sleeved on the sleeve 3 between the two inner chain plates 1. An oil injection channel 9 for lubricating oil to enter is provided between the sleeve 3 and the outer chain plate 1. A sealing element 6 is provided between the inner chain plate 2 and the outer chain plate 1 to seal the oil injection channel 9. An oil circuit opener / closer is provided between the sealing element 6 and the inner chain plate 2 to drive the sealing element to move axially to open or close the oil injection channel 9.

[0036] The oil circuit opener / closer described in this embodiment includes a sealing ring support plate 7 and a lifting locking plate 8. The sealing element 6 is installed on the sealing ring support plate 7, and the lifting locking plate 8 is rotatably installed between the sealing ring support plate 7 and the inner chain plate 2. When the lifting locking plate 8 is in the locked position, the sealing ring support plate 7 is supported and raised to close the oil injection channel 9 of the sealing element 6. When the lifting locking plate 8 is in the open position, the sealing ring support plate 7 can be lowered to open the oil injection channel 9 of the sealing element 6.

[0037] Specifically, the upper surface of the sealing ring support plate 7 is provided with two annular grooves 71 that match and are installed with the corresponding sealing elements 6. The lower surface of each annular groove 71 on the sealing ring support plate 7 is provided with several annularly spaced protrusions 72. The lifting locking plate 8 has an opening part 81 that can be rotated outwards and separated from the sealing ring support plate 7, and a rotating part 82 that is always in contact with the sealing ring support plate 7. The opening part 81 has a bayonet structure 83, which can be fastened to the outside of the corresponding sleeve 3. The opening part 81 has an operating part 84, which protrudes from the inner and outer links when in the locked position, facilitating rotation to the lifting locking plate 8. When the opening part 81 is in the locked position, its upper surface contacts the protrusions 72, thereby raising the sealing ring support plate 7; when in the open position, its upper surface separates from the sealing ring support plate 7, thereby lowering the sealing ring support plate 7. The rotating part 82 has a waist hole structure 85 that corresponds one-to-one with the protrusion 72. When the lifting locking plate 8 is in the locked position, the protrusion 72 and the waist hole structure 85 are misaligned to lift the sealing ring support plate 7. When the lifting locking plate 8 is in the open position, the protrusion 72 and the waist hole structure 85 coincide to lower the sealing ring support plate 7.

[0038] In this embodiment, oil circuit openers and closeers are provided at both the upper and lower ends of the chain. Of course, it is also possible to provide an oil circuit opener and closeer at only one end.

[0039] In this embodiment, the sealing element 6 is fitted onto the sleeve 3 or the pin 4, and can be an O-ring or an X-ring.

[0040] In use, the oil circuit opener / closer is in the locked position, meaning the lifting locking plate 8 is located between the sealing ring support plate 7. The upper surface of the lifting locking plate 8 supports the sealing ring support plate 7, thereby sealing the sealing element 6 with the upper chain plate 1, thus keeping the chain in a sealed state and preventing lubricating oil from leaking out from the bushing gap. See [link to relevant documentation]. Figure 7-9 As shown. When oiling is required, open the oil circuit opener / closer, that is, rotate the lifting locking plate 8 to separate its opening part 81 from the sealing ring support plate 7. The rotating part 82 rotates by a corresponding angle so that the protrusion 72 coincides with the waist hole structure 85. At this time, the sealing ring support plate 7 descends, thereby separating the sealing element 6 from the upper chain plate 1 and opening the oil injection channel 9, see Figure 10-12 As shown, at this point, lubricating oil can be injected to allow it to enter the bushing gap. Once the oil injection is complete, rotate the lifting locking plate 8 to re-enter the locking state.

[0041] This invention enables switching between sealed and unsealed states, thereby allowing lubricant to be added in the unsealed state and extending the product's service life.

Claims

1. A reusable oil-sealed chain, comprising outer chain plates, inner chain plates, pins, and sleeves, wherein two outer chain plates and two pins are tightly fitted together to form an outer chain link, and two inner chain plates and two sleeves are combined to form an inner chain link, wherein the inner chain link is located between the two outer chain plates of the outer chain link, the sleeve is sleeved outside the pins with a gap between the sleeve and the pins, a roller is sleeved on the sleeve between the two inner chain plates, an oil injection channel for lubricating oil is provided between the sleeve and the outer chain plates, and a sealing element is provided between the inner chain plates and the outer chain plates to seal the oil injection channel, characterized in that: An oil circuit opener / closer is provided between the seal and the inner chain plate, which can drive the seal to move axially to open or close the oil injection channel.

2. The reusable oil-sealing chain according to claim 1, characterized in that: The oil circuit opener / closer includes a sealing ring support plate and a lifting lock plate. The sealing element is installed on the sealing ring support plate, and the lifting lock plate is rotatably installed between the sealing ring support plate and the inner chain plate. When the lifting lock plate is in the locked position, the sealing ring support plate is supported and raised to close the oil injection channel. When the lifting lock plate is in the open position, the sealing ring support plate can descend to open the oil injection channel.

3. The reusable oiling sealing ring chain according to claim 2, characterized in that: The upper surface of the sealing ring support plate is provided with two annular grooves that are matched and installed with the corresponding sealing components.

4. The reusable oiling sealing ring chain according to claim 3, characterized in that: The lower surface of each annular groove on the sealing ring support plate is provided with several annularly spaced protrusions.

5. The reusable oil-sealing chain according to claim 1, characterized in that: The lifting locking plate has an opening portion that can be rotated outward and separated from the sealing ring support plate, and a rotating portion that is always in contact with the sealing ring support plate.

6. The reusable oilable sealing ring chain according to claim 5, characterized in that: The opening part has a bayonet structure, which can be fastened to the outside of the corresponding sleeve.

7. The reusable oiling sealing ring chain according to claim 5, characterized in that: The opening part has an operating part, which protrudes from the inner and outer links when in the locked position.

8. The reusable oilable sealing ring chain according to claim 5, characterized in that: When the opening part is in the locked position, its upper surface contacts the protrusion to lift the sealing ring support plate; when it is in the open position, its upper surface separates from the sealing ring support plate to lower the sealing ring support plate.

9. The reusable oiling sealing ring chain according to claim 5, characterized in that: The rotating part has a waist hole structure that corresponds one-to-one with the protrusion. When the lifting locking plate is in the locked position, the protrusion and the waist hole structure are misaligned to lift the sealing ring support plate. When the lifting locking plate is in the open position, the protrusion and the waist hole structure coincide to lower the sealing ring support plate.

10. The reusable oiling sealing ring chain according to claim 1, characterized in that: The seal is fitted onto the outside of a sleeve or pin.

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