Self-lubricating chain and conveying system
By using a self-lubricating chain design with polytetrafluoroethylene (PTFE) bushings and self-lubricating washers, the problems of chain wear and noise are solved, resulting in improved stability and efficiency.
Patent Information
- Application Number
- CN202422349474.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-09-25
AI Technical Summary
Increased wear on chains in conveyor systems due to increased running time and high temperatures leads to reduced operational stability, increased noise, increased maintenance frequency, and decreased work efficiency.
The chain features a self-lubricating design, including outer and inner links. Self-lubricating bushings made of polytetrafluoroethylene (PTFE) or composite materials are fitted between the connecting pin and the sleeve, and equipped with self-lubricating washers to reduce friction and wear.
It reduces chain wear, improves operational stability and reduces noise, lowers maintenance frequency and costs, and increases work efficiency.
Smart Images
Figure CN223495456U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chain technology, and more specifically, to a self-lubricating chain and a conveying system. Background Technology
[0002] Currently, as the operating time of chains in conveyor systems increases, especially under high-temperature conditions, their wear gradually increases, leading to a decrease in operational stability and an increase in operating noise. This, in turn, increases the frequency of maintenance and reduces operational efficiency. Utility Model Content
[0003] The purpose of this invention is to provide a self-lubricating chain and conveying system, which can play a self-lubricating role, thereby reducing its wear and tear, improving its operational stability, reducing its operating noise, and thus reducing its maintenance frequency and cost, thereby improving its work efficiency.
[0004] The embodiments of this utility model are implemented as follows:
[0005] In a first aspect, this utility model provides a self-lubricating chain, which includes multiple outer links and multiple inner links, and the multiple outer links and multiple inner links are connected in sequence to form a ring;
[0006] Each outer link includes a connecting pin and two outer link plates, with the connecting pin connected to the two outer link plates.
[0007] Each inner link includes a first self-lubricating bushing, a sleeve, and two inner link plates; the first self-lubricating bushing is fitted onto the connecting pin, and the sleeve is fitted onto the first self-lubricating bushing; both inner link plates are connected to the sleeve and are located between the two outer link plates.
[0008] In an optional embodiment, the connecting pin is fitted with a first self-lubricating washer, which is located between adjacent outer and inner chain plates along the axial direction of the connecting pin.
[0009] In an optional embodiment, a second self-lubricating washer is provided on the connecting pin shaft, and the second self-lubricating washer is located between the sleeve and the adjacent inner chain plate along the axial direction of the connecting pin shaft.
[0010] In an optional embodiment, the inner link further includes a first roller and a second self-lubricating bushing, the first roller being rotatably connected to the sleeve and located between two inner link plates;
[0011] The second self-lubricating bushing is positioned between the first roller and the sleeve.
[0012] In an optional embodiment, the two ends of the connecting pin are respectively provided with connecting blocks and connecting threads, and the connecting blocks and connecting threads are distributed on the outer sides of the two outer chain plates.
[0013] The outer link also includes a second roller and a connecting nut. The second roller is rotatably connected to the connecting pier, and the connecting nut is threadedly connected to the connecting thread.
[0014] In an optional embodiment, the outer link further includes a third self-lubricating bushing disposed between the second roller and the connecting pier.
[0015] In an optional embodiment, a third self-lubricating washer is provided on the connecting pin shaft, and the third self-lubricating washer is located between the end of the connecting pin shaft and the connecting pier along the axial direction of the connecting pin shaft.
[0016] In an optional embodiment, the connecting pin is fitted with a fourth self-lubricating washer, which is located between the connecting pier and the adjacent outer chain plate along the axial direction of the connecting pin.
[0017] In an optional embodiment, a washer is provided between the connecting nut and the outer chain plate.
[0018] Secondly, this utility model provides a conveying system, which includes the aforementioned self-lubricating chain.
[0019] The beneficial effects of this utility model embodiment include:
[0020] This self-lubricating chain comprises multiple outer links and multiple inner links, which are sequentially connected to form a ring. Each outer link includes a connecting pin and two outer links, with the connecting pin connected to the two outer links. Each inner link includes a first self-lubricating bushing, a sleeve, and two inner links. The first self-lubricating bushing is fitted onto the connecting pin, and the sleeve is fitted onto the first self-lubricating bushing. Both inner links are connected to the sleeve and located between the two outer links. This self-lubricating chain provides self-lubrication, thereby reducing wear and tear, improving operational stability, and reducing operating noise. Consequently, it reduces maintenance frequency and costs, thus increasing operational efficiency. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1This is a schematic diagram of the structure of the self-lubricating chain in an embodiment of the present invention;
[0023] Figure 2 This is a cross-sectional view of the self-lubricating chain in an embodiment of this utility model.
[0024] Icons: 100 - Self-lubricating chain; 110 - Outer link; 120 - Inner link; 111 - Connecting pin; 112 - Outer chain plate; 121 - First self-lubricating bushing; 122 - Sleeve; 123 - Inner chain plate; 131 - First self-lubricating washer; 132 - Second self-lubricating washer; 124 - First roller; 125 - Second self-lubricating bushing; 113 - Connecting block; 114 - Second roller; 115 - Connecting nut; 116 - Third self-lubricating bushing; 133 - Third self-lubricating washer; 134 - Fourth self-lubricating washer; 117 - Washer. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0029] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 utility model based on the specific circumstances.
[0031] Please refer to Figure 1 and Figure 2 This embodiment provides a self-lubricating chain 100, which includes multiple outer links 110 and multiple inner links 120, which are sequentially connected to form a ring.
[0032] Each outer link 110 includes a connecting pin 111 and two outer link plates 112, with the connecting pin 111 connected to the two outer link plates 112.
[0033] Each inner link 120 includes a first self-lubricating bushing 121, a sleeve 122, and two inner link plates 123; the first self-lubricating bushing 121 is sleeved on the connecting pin 111, and the sleeve 122 is sleeved on the first self-lubricating bushing 121; the two inner link plates 123 are connected to the sleeve 122 and are located between the two outer link plates 112.
[0034] Please refer to Figure 1 and Figure 2 The working principle of the self-lubricating chain 100 is as follows:
[0035] First, the self-lubricating chain 100 is applied to a conveying system, and in other embodiments of this utility model, it can also be applied to other fields;
[0036] The self-lubricating chain 100 includes multiple outer links 110 and multiple inner links 120, which are connected in sequence to form a ring; each outer link 110 includes a connecting pin 111 and two outer links 112, and the connecting pin 111 is connected to the two outer links 112.
[0037] Each inner link 120 includes a first self-lubricating bushing 121, a sleeve 122, and two inner link plates 123. The first self-lubricating bushing 121 is fitted onto the connecting pin 111, and the sleeve 122 is fitted onto the first self-lubricating bushing 121. The two inner link plates 123 are connected to the sleeve 122 and are located between the two outer link plates 112. Thus, during use, the first self-lubricating bushing 121 provides lubrication between the sleeve 122 and the connecting pin 111, thereby preventing increased wear between the sleeve 122 and the connecting pin 111 due to reduced lubrication efficiency over time. This reduces wear between the connecting pin 111 and the sleeve 122 during operation.
[0038] The self-lubricating chain 100 can play a self-lubricating role, thereby reducing its running wear, improving its working stability, and reducing its operating noise. Based on this, it can reduce its maintenance frequency, reduce maintenance costs, and thus improve its working efficiency.
[0039] It should be noted that, in the embodiments, when configuring the aforementioned first self-lubricating bushing 121, the first self-lubricating bushing 121 can be made of multilayer composite materials, which can provide good sliding performance without external lubrication. Specifically, the first self-lubricating bushing 121 can be made of polytetrafluoroethylene (PTFE). Since PTFE has an extremely low coefficient of friction and good chemical stability, it is suitable for various environments. Therefore, using PTFE to make the first self-lubricating bushing 121 can reduce friction and wear, thereby reducing the frequency of maintenance. The first self-lubricating bushing 121 can also be made of engineering plastics, such as polyoxymethylene (POM) and polyimide (PI), which have good wear resistance and self-lubricating properties to reduce friction and maintenance costs.
[0040] The first self-lubricating bushing 121 can also be made of composite materials or composite structures, such as:
[0041] The first self-lubricating bushing 121 can be a composite structure of a metal matrix and a porous bronze layer, wherein the metal matrix provides high strength and rigidity, while the porous bronze layer provides good thermal conductivity and mechanical support to ensure the stability of the bushing; it can also be a composite material of metal and plastic, in which a solid lubricant such as PTFE is combined with a metal matrix or plastic matrix through a special process to form a bushing with self-lubricating properties; it can also be a combination structure of alloy steel and stainless steel, which can reduce the coefficient of friction by improving its smoothness and reducing its roughness, thereby reducing operational wear, and the use of alloy steel chain and high-quality stainless steel pins with outer chain plate 112 can reduce metal contact, thereby reducing friction and achieving self-lubrication;
[0042] The aforementioned materials and structural design enable the first self-lubricating bushing 121 to achieve a self-lubricating effect during use, reducing maintenance requirements, decreasing friction and wear, and improving the service life and operating efficiency of the chain.
[0043] Further, please refer to Figure 1 and Figure 2 Based on the above structure, in this embodiment, a first self-lubricating washer 131 is sleeved on the connecting pin 111. The first self-lubricating washer 131 is located between the adjacent outer chain plate 112 and inner chain plate 123 along the axial direction of the connecting pin 111. The purpose of this arrangement is to reduce the gap between the outer chain plate 112 and the inner chain plate 123 and to play a self-lubricating role, thereby reducing their wear.
[0044] In addition, a second self-lubricating washer 132 is fitted onto the connecting pin 111. The second self-lubricating washer 132 is located between the sleeve 122 and the adjacent inner chain plate 123 along the axial direction of the connecting pin 111. The purpose of this arrangement is to reduce the gap between the sleeve 122 and the adjacent inner chain plate 123 and to provide self-lubrication, thereby reducing wear.
[0045] Similar to the principle of the first self-lubricating bushing 121 described above, in this embodiment, the inner link 120 further includes a first roller 124 and a second self-lubricating bushing 125. The first roller 124 is rotatably connected to the sleeve 122 and located between the two inner link plates 123; the second self-lubricating bushing 125 is disposed between the first roller 124 and the sleeve 122. This arrangement can reduce wear between the first roller 124 and the sleeve 122.
[0046] Further, please refer to Figure 1 and Figure 2 In this embodiment, the connecting pin 111 is configured with connecting blocks 113 and connecting threads at both ends, and the connecting blocks 113 and connecting threads are distributed on the outer sides of the two outer chain plates 112. The outer chain link 110 also includes a second roller 114 and a connecting nut 115. The second roller 114 is rotatably connected to the connecting blocks 113, and the connecting nut 115 is threadedly connected to the connecting threads. This configuration can improve the stability of the connection through the connecting blocks 113 and the connecting nut 115. The connecting blocks 113 can reduce the friction and wear between the connecting pin 111 and the chain plate, while providing a certain degree of self-lubrication. In order to reduce the gap between the connecting nut 115 and the outer chain plate 112, a washer 117 is provided between the connecting nut 115 and the outer chain plate 112.
[0047] Similar to the principle of the first self-lubricating bushing 121 described above, the outer link 110 also includes a third self-lubricating bushing 116, which is disposed between the second roller 114 and the connecting block 113, based on the aforementioned connecting block 113 and the second roller 114.
[0048] It should be noted that the arrangement of the first roller 124 and the second roller 114 can be used to support materials or to roll in contact with the guide rail, thereby reducing the wear of the self-lubricating chain 100 during use and reducing its operating noise.
[0049] Based on the above structure, in order to reduce the gap and wear between the end of the connecting pin 111 and the connecting platform 113, a third self-lubricating washer 133 is fitted onto the connecting pin 111. The third self-lubricating washer 133 is located between the end of the connecting pin 111 and the connecting platform 113 along the axial direction of the connecting pin 111. Furthermore, in order to reduce the gap and wear between the connecting platform 113 and the adjacent outer chain plate 112, a fourth self-lubricating washer 134 is fitted onto the connecting pin 111. The fourth self-lubricating washer 134 is located between the connecting platform 113 and the adjacent outer chain plate 112 along the axial direction of the connecting pin 111.
[0050] In summary, please refer to Figure 1 and Figure 2 In this embodiment, the self-lubricating chain 100 is equipped with a first self-lubricating bushing 121, a second self-lubricating bushing 125, a third self-lubricating bushing 116, a first self-lubricating washer 131, a second self-lubricating washer 132, a third self-lubricating washer 133, and a fourth self-lubricating washer 134. This allows the chain to lubricate surfaces at the following locations: between adjacent chain plates, between rollers and chain plates, between rollers and connecting mounting plates, between rollers and connecting pins 111, between rollers and sleeves 122, and between sleeves 122 and connecting pins 111. The mating surfaces of the connecting pin 111 and other locations provide self-lubrication, thereby reducing gaps and preventing dust from entering the gaps while ensuring the flexible and normal operation of the self-lubricating chain 100. This reduces operational wear, increases structural compactness, and extends the service life of the self-lubricating chain 100. It solves the problems in the prior art where chains in conveying systems require regular lubrication and maintenance, as well as the problems of increased gaps, high noise, low efficiency, and reduced conveying stability caused by thermal expansion under high temperature conditions.
[0051] It should be noted that, referring to the above, the second self-lubricating bushing 125, the third self-lubricating bushing 116, the first self-lubricating washer 131, the second self-lubricating washer 132, the third self-lubricating washer 133, and the fourth self-lubricating washer 134 can all adopt the same structure as the first self-lubricating bushing 121 or be made of the same material. That is, they can be made of polytetrafluoroethylene (PTFE), or they can be made of composite materials or composite structures. The specific details will not be elaborated here.
[0052] Based on the above, please refer to Figure 1 and Figure 2 This embodiment also provides a conveying system, which includes the self-lubricating chain 100 described above. By employing the self-lubricating chain 100, the conveying system can reduce wear during operation due to the self-lubricating effect of the chain 100, thereby improving the smoothness of operation and reducing operating noise. Based on this, it can reduce maintenance frequency and maintenance costs, thereby improving work efficiency.
[0053] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A self-lubricating chain, characterized in that: The self-lubricating chain includes multiple outer links and multiple inner links, which are sequentially connected to form a ring. Each of the outer links includes a connecting pin and two outer links, the connecting pin being connected to the two outer links; Each of the inner links includes a first self-lubricating bushing, a sleeve, and two inner link plates; the first self-lubricating bushing is sleeved on the connecting pin, and the sleeve is sleeved on the first self-lubricating bushing; both inner link plates are connected to the sleeve and are located between the two outer link plates. The connecting pin is fitted with a first self-lubricating washer, which is located between the adjacent outer chain plate and the inner chain plate along the axial direction of the connecting pin. The connecting pin is fitted with a second self-lubricating washer, which is located between the sleeve and the adjacent inner chain plate along the axial direction of the connecting pin.
2. The self-lubricating chain according to claim 1, characterized in that: The inner link also includes a first roller and a second self-lubricating bushing, wherein the first roller is rotatably connected to the bushing and is located between the two inner link plates; The second self-lubricating bushing is disposed between the first roller and the sleeve.
3. The self-lubricating chain according to claim 2, characterized in that: The two ends of the connecting pin are respectively provided with connecting blocks and connecting threads, and the connecting blocks and connecting threads are distributed on the outer sides of the two outer chain plates. The outer link also includes a second roller and a connecting nut. The second roller is rotatably connected to the connecting platform, and the connecting nut is threadedly connected to the connecting thread.
4. The self-lubricating chain according to claim 3, characterized in that: The outer link also includes a third self-lubricating bushing, which is disposed between the second roller and the connecting pier.
5. The self-lubricating chain according to claim 3, characterized in that: The connecting pin is fitted with a third self-lubricating washer, which is located between the end of the connecting pin and the connecting pier along the axial direction of the connecting pin.
6. The self-lubricating chain according to claim 3, characterized in that: The connecting pin is fitted with a fourth self-lubricating washer, which is located between the connecting pier and the adjacent outer chain plate along the axial direction of the connecting pin.
7. The self-lubricating chain according to claim 3, characterized in that: A washer is provided between the connecting nut and the outer chain plate.
8. A conveying system, characterized in that: The conveying system includes a self-lubricating chain as described in any one of claims 1-7.