A bolt transition link with sealing ring
By designing the transition link with sealing ring, the problems of low wear resistance and tensile strength, non-versatile, easy to disintegrate and short service life in the prior art are solved, and the adaptability and service life of conventional and enhanced chains are extended.
Patent Information
- Application Number
- CN202421505503.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The transition links for existing agricultural machinery chains have problems such as low wear resistance and tensile strength, lack of versatility, easy to cause disintegration failure and short service life.
A bolt transition link with seal ring is designed, using a combination of O-type and D-type transition chain plates, seamless sleeves, rollers, seal rings and bolt transition pins. Through the seal ring design and the engagement structure of the bolt transition pins, the tensile strength and wear resistance are improved, and versatility and service life are enhanced.
The adaptability to conventional chains and reinforced chains is achieved, the service life of the transition links is extended, excessive wear between the sleeve and the pin is avoided, and the transition links are prevented from failing by meshing with the nut and thread.
Smart Images
Figure CN222702473U_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of chain transmission, and specifically relates to a bolt transition chain link with a sealing ring. Background Art
[0002] Transition links for agricultural machinery chains are required to have a stable structure, tensile strength that meets 80% of the chain standard, high wear resistance and strong interchangeability. Figure 1 The figure shows a transition link for agricultural machinery chain in the prior art. This structural transition link has the following defects:
[0003] 1. The sleeve for the transition link is a seamed sleeve with obvious burrs and guide protrusions, and has low wear resistance and tensile strength.
[0004] 2. Transition links can only be used with chains of the same model. The enhanced series and conventional series of chains of the same model are not interchangeable.
[0005] 3. There is a clearance fit between the transition chain plate and the transition pin in the transition chain link, and the profile and transition pin are milled to achieve the anti-rotation function. The split pin is used as a locking part. If the transition chain link is operated for a long time, there is a risk that the split pin will be worn off and the chain link will fall apart and fail.
[0006] 4. The transition link is a vulnerable part of the chain. The transition pin and sleeve are severely worn, which reduces the service life of the transition link. Utility Model Content
[0007] In view of the problems of the prior art, the present invention discloses a bolt transition link with a sealing ring, aiming to solve the problems 1-4 described in the background technology.
[0008] To achieve the above purpose, the novel technical solution used is:
[0009] A transition chain link with a sealing ring bolt comprises an O-type transition chain plate, a D-type transition chain plate, a sleeve, a roller, a sealing ring, and a transition pin. The O-type transition chain plate and the D-type transition chain plate are arranged opposite to each other, one side of the O-type transition chain plate and the D-type transition chain plate is connected to a sleeve, and the other side is connected to a transition pin. Both ends of the sleeve are respectively interference fit with the O-type assembly holes arranged on the same side of the O-type transition chain plate and the D-type transition chain plate, and a roller is fitted with a gap outside the sleeve. The transition pin passes through the O-type assembly hole of the O-type transition chain plate on the other side and the D-type assembly hole of the D-type transition chain plate 3, and is gap fit with the corresponding O-type assembly hole and D-type assembly hole. The end of the transition pin is locked by a nut, and the sleeve and the transition pin are both provided with a sealing ring.
[0010] Preferably, the O-type transition chain plate and the D-type transition chain plate are both Z-shaped folded plate structures, and the relatively arranged O-type transition chain plates and the D-type transition chain plates constitute a structure with a small spacing at one end and a large spacing at the other end. The sleeve is assembled with the exposed head on the side of the O-type transition chain plate and the D-type transition chain plate with a small spacing, and a first sealing ring is arranged at the exposed head.
[0011] Preferably, the portion of the transition pin that passes through the D-shaped assembly hole is provided with an external thread and is threadedly connected to the nut via the external thread.
[0012] Preferably, the partial cross-section of the transition pin passing through the D-shaped assembly hole is a D-shaped structure matching the D-shaped assembly hole, and the nut includes a first nut located on the inner side and a second nut located on the outer side.
[0013] Preferably, the thickness of the first nut is greater than that of the second nut.
[0014] Preferably, the transition pin is located at both ends of the inner part of the O-type transition chain plate 4 and the D-type transition chain plate 3 and is respectively provided with a second sealing ring.
[0015] Preferably, the end of the transition pin away from the external thread is processed by a pier head.
[0016] Preferably, the sleeve is a seamless sleeve.
[0017] The beneficial effects of the new bolt transition chain link with sealing ring are:
[0018] 1. This new type can be adapted to the links of conventional chains and reinforced chains by selecting sleeves and transition pins of appropriate sizes, and has high versatility.
[0019] 2. New sealing ring design is added to wrap the lubricating oil between the sleeve and the pin shaft to achieve lubrication; avoid excessive wear between the sleeve and the pin shaft, which will reduce the service life of the transition chain link
[0020] 3. The sleeve assembly adopts an exposed head design, which is convenient for the installation of the sealing ring when linking the chain.
[0021] 4. The transition pin is designed as a bolt transition pin; the nut is threadedly engaged with the transition pin to prevent the transition chain link from falling apart and failing during use.
[0022] 5. The transition pin is designed as a pier head, and the bottom diameter increases evenly to prevent the transition pin from falling off during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 , Schematic diagram of a transition link in the prior art: wherein, (1) a front view; (2) a top view;
[0024] Figure 2, a front view structural diagram of the present invention;
[0025] Figure 3 , a schematic diagram of the top view of the structure of the novel;
[0026] Figure 4 , a schematic diagram of the structure of the new transition pin;
[0027] Figure 5 , schematic diagram of the structure of the new D-type transition chain plate;
[0028] 1. Roller; 2. Sleeve; 3. D-type transition chain plate; 4. O-type transition chain plate; 5. Sealing ring; 6. First nut; 7. Second nut; 8. Transition pin. DETAILED DESCRIPTION
[0029] 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.
[0030] 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.
[0031] Example 1
[0032] A bolt transition link with a sealing ring, such as Figure 2 , 3 As shown, it includes an O-type transition chain plate 4, a D-type transition chain plate 3, a sleeve 2, a roller 1, a sealing ring 5, and a transition pin 8. The O-type transition chain plate 4 and the D-type transition chain plate 3 are arranged opposite to each other, one side of the O-type transition chain plate 4 and the D-type transition chain plate 3 is connected with the sleeve 3, and the other side is connected with the transition pin 8, the two ends of the sleeve 3 are respectively interference fit with the O-type assembly holes set on the same side of the O-type transition chain plate 4 and the D-type transition chain plate 3, the outer clearance of the sleeve 3 is fitted with the roller 1, the transition pin 8 passes through the O-type assembly hole of the O-type transition chain plate 4 on the other side and the D-type assembly hole of the D-type transition chain plate 3, and is clearance-fitted with the corresponding O-type assembly hole and D-type assembly hole, the end of the transition pin is locked by a nut, and the sleeve and the transition pin are both equipped with sealing rings.
[0033] In this embodiment, by providing matching O-type transition chain plates 4, D-type transition chain plates 3 and transition pin shafts 8, the structural strength of the transition chain links can be improved, overcoming the defect in the prior art that the transition chain links are prone to fall apart during use.
[0034] Example 2
[0035] like Figure 2 , 3As shown in , 5, the O-type transition chain plate 4 and the D-type transition chain plate 3 are both Z-shaped folded plate structures, and the relatively arranged O-type transition chain plates 4 and the D-type transition chain plates 3 form a structure with a small spacing at one end and a large spacing at the other end. The sleeve is assembled with the exposed head on the side with a small spacing between the O-type transition chain plates 4 and the D-type transition chain plates 3, and a first sealing ring (not shown in the figure) is arranged at the exposed head.
[0036] In this embodiment, the first sealing ring is used to be added during the process of linking the chain through the present invention. It is put on the outside of the exposed part of the sleeve and is tightened by the outer link plate at the link to achieve oil sealing between the chain pin and the sleeve, thereby avoiding excessive wear between the sleeve and the chain pin, which leads to a reduction in the service life of the transition chain link.
[0037] Example 3
[0038] like Figure 2 , 3 As shown in FIG. 4 , the portion of the transition pin 8 passing through the D-shaped assembly hole is provided with an external thread, and is screwed with a nut through the external thread. The nut fits tightly with the D-shaped transition chain plate, and the locking firmness of the transition chain link is increased.
[0039] Example 4
[0040] like Figure 2 , 3 As shown, the partial cross-section of the transition pin 8 passing through the D-shaped assembly hole is a D-shaped structure matching the D-shaped assembly hole, and the nut includes a first nut 6 located on the inner side and a second nut 7 located on the outer side.
[0041] like Figure 2 As shown, the thickness of the first nut 6 is greater than that of the second nut 7 .
[0042] Example 5
[0043] like Figure 2 As shown, the transition pin 8 is located at both ends of the inner part of the O-type transition chain plate 4 and the D-type transition chain plate 3 and is respectively provided with a second sealing ring.
[0044] In this embodiment, when the chain is linked, the second sealing ring can fit tightly with the inner link of the chain, encapsulating the lubricating oil between the inner link sleeve and the transition pin shaft to achieve a lubricated state, thereby avoiding excessive wear between the inner link sleeve and the transition pin shaft, which would reduce the service life of the transition link.
[0045] Example 6
[0046] like Figure 2 , 3 As shown in FIG. 4 , the end of the transition pin 8 away from the external thread is processed by a pier head, and the bottom diameter of the transition pin is uniformly increased, which effectively increases the structural strength of the transition link.
[0047] Example 7
[0048] like Figure 2 As shown, the sleeve 2 is a seamless sleeve.
[0049] The working principle of this new model:
[0050] 1. The difference between the reinforced chain and the conventional chain is that the thickness of the chain plate of the two is different. The thickness of the chain plate of the reinforced chain is 3.25mm, and the thickness of the conventional chain is 2.42mm. By selecting a sleeve of appropriate size, the inner width b1 of one end of the transition link can be adjusted; by selecting a transition pin of appropriate size, the inner width b2 of the other end of the transition link can be adjusted. In other words, by selecting a sleeve and a transition pin of appropriate size, the new type can be adapted to the links of conventional chains and the links of reinforced chains, and has high versatility.
[0051] 2. New sealing ring design is added to wrap the lubricating oil between the sleeve and the pin shaft to achieve lubrication; avoid excessive wear between the sleeve and the pin shaft, which will reduce the service life of the transition chain link
[0052] 3. The sleeve assembly adopts an exposed head design, which is convenient for the installation of the sealing ring when linking the chain.
[0053] 4. The transition pin is designed as a bolt transition pin; the nut is threadedly engaged with the transition pin to prevent the transition chain link from falling apart and failing during use.
[0054] 5. The transition pin is designed as a pier head, and the bottom diameter increases evenly to prevent the transition pin from falling off during use.
Claims
1. A bolt transition link with a sealing ring, characterized by: It comprises an O-type transition chain plate, a D-type transition chain plate, a sleeve, a roller, a sealing ring, and a transition pin shaft. The O-type transition chain plate and the D-type transition chain plate are arranged opposite to each other. One side of the O-type transition chain plate and the D-type transition chain plate is connected to the sleeve, and the other side is connected to the transition pin shaft. The two ends of the sleeve are respectively interference-fitted with the O-type assembly holes arranged on the same side of the O-type transition chain plate and the D-type transition chain plate. The roller is fitted with a gap outside the sleeve. The transition pin shaft passes through the O-type assembly hole of the O-type transition chain plate on the other side and the D-type assembly hole of the D-type transition chain plate (3), and is gap-fitted with the corresponding O-type assembly hole and D-type assembly hole. The end of the transition pin shaft is locked by a nut. The sleeve and the transition pin shaft are both equipped with a sealing ring.
2. A bolt transition link with a sealing ring as claimed in claim 1, characterized in that: The O-type transition chain plate and the D-type transition chain plate are both Z-shaped folded plate structures. The relatively arranged O-type transition chain plates and the D-type transition chain plates form a structure with a small spacing at one end and a large spacing at the other end. The sleeve is assembled with the exposed head on the side of the O-type transition chain plate and the D-type transition chain plate with a small spacing, and a first sealing ring is arranged at the exposed head.
3. A bolt transition link with a sealing ring as claimed in claim 1 or 2, characterized in that: The portion of the transition pin shaft passing through the D-shaped assembly hole is provided with an external thread and is threadedly connected with the nut through the external thread.
4. A bolt transition link with a sealing ring as claimed in claim 3, characterized in that: The partial cross section of the transition pin passing through the D-shaped assembly hole is a D-shaped structure matching the D-shaped assembly hole, and the nut includes a first nut located on the inner side and a second nut located on the outer side.
5. A bolt transition link with a sealing ring as claimed in claim 4, characterized in that: The thickness of the first nut is greater than that of the second nut.
6. A bolt transition link with a sealing ring as claimed in claim 5, characterized in that: The transition pin shaft is located at both ends of the inner part of the O-type transition chain plate (4) and the D-type transition chain plate (3), and is respectively provided with a second sealing ring.
7. A bolt transition link with a sealing ring as claimed in claim 6, characterized in that: The end of the transition pin shaft away from the external thread is processed by a pier head.
8. A bolt transition link with a sealing ring as described in any one of claims 1, 2, 4-7, characterized in that: The sleeve is a seamless sleeve.