Chain with adjustable length

Abstract

The utility model relates to the technical field of chains, and discloses a length-adjustable chain which comprises an outer chain plate, connecting holes are formed in the two sides of the outer chain plate, locking structures are fixedly arranged on the inner surfaces of the connecting holes, chain barrel structures are arranged on the outer surfaces of the locking structures in a clamped mode, and each chain barrel structure comprises a chain barrel body. Mounting holes are formed in the centers of the two sides of the chain cylinder body, mounting grooves are formed in the two sides of the outer surface of the chain cylinder body, friction rings are clamped to the outer surfaces of the two mounting grooves, and an inner chain plate is clamped to one side of the outer surface of the friction ring on the other side of the chain cylinder body. According to the utility model, the length of the chain is adjusted by changing the form of the connecting piece, the chain is lengthened through the locking structure by selecting the same chain plate and chain cylinder according to the length required to be added, and the locking mechanism is designed by adopting a mechanical locking mode to ensure that the chain can be stably kept at the required length after being locked.

Description

Technical Field

[0001] The utility model relates to the technical field of chains, in particular to an adjustable-length chain. Background Art

[0002] A chain is generally a metal link or loop, mostly used for mechanical transmission and traction. Chain-shaped objects used to block traffic channels, such as in streets, rivers or at the entrance of a harbor, and chains used in mechanical transmission. Chains include four major series: drive chains; conveyor chains; drag chains; special professional chain series are often metal links or loops: chain-shaped objects used to block traffic channels (such as in streets, rivers or at the entrance of a harbor); chains used in mechanical transmission. Chains can be divided into short pitch precision roller chains; short pitch precision roller chains; offset sidebar roller chains for heavy-duty transmission; chains for cement machinery, plate chains; high-strength chains.

[0003] Most of the existing chains are rather cumbersome to adjust, and may cause the gaps between the chains to become larger or smaller, resulting in the chains not being able to be used properly. Moreover, most of the existing chains do not have friction rings and cannot extend the service life.

[0004] Therefore, the utility model provides an adjustable-length chain to solve the problems raised in the above background art. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art, and an adjustable-length chain is proposed. The length of the chain is adjusted by changing the form of the connecting piece. According to the length to be added, the same chain plates and chain barrels are selected and the chain is lengthened through a locking structure. In the design of the locking structure, a mechanical locking method is adopted to ensure that the chain can be stably maintained at the required length after being locked.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An adjustable-length chain, including outer chain plates, connection holes are provided on both sides of the outer chain plates, a locking structure is fixedly arranged on the inner surface of the connection holes, a chain barrel structure is clamped on the outer surface of the locking structure, the chain barrel structure includes a chain barrel body, mounting holes are provided at the central positions on both sides of the chain barrel body, mounting grooves are provided on both sides of the outer surface of the chain barrel body, friction rings are clamped on the outer surfaces of the two mounting grooves, and an inner chain plate is clamped on one side of the outer surface of the friction ring on the other side of the chain barrel body;

[0007] Through the above technical scheme, the outer link plate protects the outside of the chain, the connecting hole facilitates the connection between the outer link plate and the locking structure, the chain barrel structure can fix the relative position of the inner link plate and better connect with the sprocket, the mounting hole is used to connect with the locking structure, and the mounting groove is used to install the inner link plate and the friction ring. The friction ring can effectively reduce friction. The inner link plate forms a stable and tight connection with the chain barrel body through close contact with the friction ring, ensuring that the inner link plate can maintain synchronous movement with the chain barrel body when bearing load, avoiding performance degradation and safety hazards caused by loose connection.

[0008] Furthermore, the mounting holes on both sides of the chain barrel body are through, and the width of the mounting groove is the sum of the width of the friction ring and the width of the inner chain plate;

[0009] Through the above technical solution, the through mounting hole facilitates the installation of the locking structure or alignment with the connecting hole of the outer link plate, ensuring that the chain barrel body can be accurately connected to the outer link plate, improving the efficiency and accuracy of assembly, and the width of the mounting groove is equal to the total width of the friction ring and the inner link plate, so that the two can fit better during installation, reducing the movement gap between them, thereby improving the transmission efficiency.

[0010] Furthermore, the connection holes on both sides of the outer link plate have the same outer diameter as the locking structure, and the materials of the outer link plate and the inner link plate are both 45Mn;

[0011] Through the above technical solution, the high strength characteristics of 45Mn steel can withstand the high loads in the chain drive system, ensuring that the chain barrel body maintains structural stability during long-term operation. The good wear resistance reduces the friction between the inner and outer chain plates, reducing the performance degradation and maintenance costs caused by friction.

[0012] Furthermore, the mounting hole has the same inner diameter as the connecting holes opened on both sides of the outer link plate, and the inner diameter of the mounting hole has the same outer diameter as the locking structure;

[0013] Through the above technical solution, the inner diameter of the mounting hole is the same as the outer diameter of the locking structure, ensuring that the locking structure can be accurately embedded in the mounting hole, forming a mechanical lock, and achieving the fixation between the chain barrel body and the outer chain plate. It ensures the stability of the connection and can also resist vibration and external forces during operation, avoiding performance degradation and safety hazards caused by loose connections.

[0014] Furthermore, the inner diameter of the connection holes opened on both sides of the inner chain plate is the same as the outer diameter of the mounting groove, and the material of the chain barrel body is 45Mn;

[0015] Through the above technical solution, the plasticity and toughness of 45Mn steel enable it to maintain good shape recovery ability when subjected to impact and deformation, thereby extending the service life of the chain barrel body.

[0016] Furthermore, the locking structure adopts a mechanical locking method;

[0017] Through the above technical solution, the mechanical locking method can provide a stable connection, and even under harsh environmental conditions, the stability of the connection can be maintained.

[0018] The utility model has the following beneficial effects:

[0019] 1. A length-adjustable chain proposed by the utility model. The device realizes the adjustment of the chain length by changing the form of the connecting piece. The same chain plates and chain barrels are selected according to the required added length, and the chain is lengthened through the locking structure. In the design of the locking structure, a mechanical locking method is adopted to ensure that the chain can be stably maintained at the required length after locking.

[0020] 2. A length-adjustable chain proposed by the utility model. The chain body is composed of multiple chain links, and the chain links are connected through a locking structure. A friction ring is arranged between the inner chain plate and the outer chain plate, which can effectively extend the service life, thereby adjusting the length of the chain. The locking mechanism is cooperatively connected to lock the chain at the required position after adjusting the chain length and fix the lengthened chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the first axonometric drawing of the utility model;

[0022] Figure 2 is the second axonometric drawing of the utility model;

[0023] Figure 3 is the exploded structural schematic diagram of the utility model;

[0024] Figure 4 is the structural schematic diagram of the chain barrel of the utility model.

[0025] LEGEND DESCRIPTION:

[0026] 1. Outer chain plate; 2. Inner chain plate; 3. Connecting hole; 4. Chain barrel structure; 401. Chain barrel body; 402. Installation hole; 403. Installation groove; 5. Friction ring; 6. Locking structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.

[0028] Embodiment

[0029] Reference Figures 1-4 The utility model provides an embodiment: a length-adjustable chain, including an outer link plate 1, with connecting holes 3 on both sides of the outer link plate 1, the outer link plate 1 ensures a stable connection in the chain drive, the connecting hole 3 is calculated and designed to ensure the cooperation with other components in the device, the inner surface of the connecting hole 3 is fixedly provided with a locking structure 6, the outer diameter of the locking structure 6 matches the inner diameter of the connecting hole 3, and can ensure that the connection is as tight as possible, the outer surface of the locking structure 6 is clamped with a chain barrel structure 4, the chain barrel structure 4 includes a chain barrel body 401, the chain barrel body 401 can fix the distance between the inner link plate 2 and the outer link plate 1 and cooperate with the sprocket, and the center position on both sides of the chain barrel body 401 is opened There is a mounting hole 402, which enables the locking structure 6 to be locked. Mounting grooves 403 are provided on both sides of the outer surface of the chain barrel body 401. Friction rings 5 ​​are clamped on the outer surfaces of the two mounting grooves 403. The friction rings 5 ​​can reduce the friction between the components and can effectively extend the service life of the device. An inner chain plate 2 is clamped on one side of the outer surface of the friction ring 5 on the other side of the chain barrel body 401. The inner chain plate 2 and the outer chain plate 1 are both mounting components for assembling into chain links. The inner diameters of the connecting holes 3 on both sides precisely correspond to the outer diameters of the mounting grooves 403 of the chain barrel body 401, ensuring the connection between the inner chain plate 2 and the chain barrel body 401, and enhancing the connectivity between the components and the stability of the overall structure.

[0030] The mounting holes 402 opened on both sides of the chain barrel body 401 are through, and the inner diameter of the holes is the same as that of the connecting holes 3 of the outer chain plate 1, ensuring seamless docking between the components. At the same time, they are also the same as the outer diameter of the locking structure 6 to ensure the stability of the connection. The width of the mounting groove 403 is the sum of the width of the friction ring 5 and the width of the inner chain plate 2. The width of the mounting groove 403 is designed to be the sum of the width of the friction ring 5 and the width of the inner chain plate 2, ensuring that the friction ring 5 and the inner chain plate 2 can be tightly clamped and enhance the friction of the components. The connecting holes 3 opened on both sides of the outer chain plate 1 have the same outer diameter as the locking structure 6. The materials of the outer chain plate 1 and the inner chain plate 2 are both 45Mn, which is famous for its good mechanical properties, high strength and wear resistance. It is a material for manufacturing high stress and friction. The most preferred embodiment of the wiping component is that the mounting hole 402 has the same inner diameter as the connecting holes 3 opened on both sides of the outer link plate 1, the inner diameter of the mounting hole 402 is the same as the outer diameter of the locking structure 6, the inner diameter of the connecting holes 3 opened on both sides of the inner link plate 2 is the same as the outer diameter of the mounting groove 403, and the inner diameter of the connecting holes 3 on both sides precisely corresponds to the outer diameter of the mounting groove 403 of the chain barrel body 401, ensuring seamless connection between the inner chain plate 2 and the chain barrel body 401, enhancing the connection strength between the components and the stability of the overall structure. The material of the chain barrel body 401 is 45Mn, and the locking structure 6 adopts a mechanical locking method. The mechanical locking method can not only ensure the stable connection between the chain barrel structure 4 and the outer link plate 1, but also avoid loosening during operation.

[0031] Working principle: The chain plate is directly fixed and opened through the locking structure 6. According to the required increased or decreased length, the inner chain plate 2, the outer chain plate 1 and the chain barrel structure 4 are decreased or increased. The installation groove 403 on the outer side of the corresponding chain barrel body 401 is clamped into the connection holes 3 on both sides of the inner chain plate 2. The friction ring 5 is placed on the part of the installation groove 403 exposed on the chain barrel body 401. The outer chain plate 1 is placed outside the inner chain plate 2, so that the connection holes 3 on both sides of the outer chain plate 1 are aligned with the installation holes 402 on both sides of the chain barrel body 401. The locking structure 6 fixes the chain through the installation holes 402.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A length-adjustable chain, comprising an outer link plate (1), characterized in that: The outer link plate (1) is provided with connection holes (3) on both sides, a locking structure (6) is fixedly arranged on the inner surface of the connection hole (3), a chain barrel structure (4) is clamped on the outer surface of the locking structure (6), and the chain barrel structure (4) comprises a chain barrel body (401), mounting holes (402) are provided at the center positions of both sides of the chain barrel body (401), mounting grooves (403) are provided on both sides of the outer surface of the chain barrel body (401), friction rings (5) are clamped on the outer surfaces of the two mounting grooves (403), and the inner link plate (2) is clamped on one side of the outer surface of the friction ring (5) on the other side of the chain barrel body (401).

2. A length-adjustable chain according to claim 1, characterized in that: The mounting holes (402) opened on both sides of the chain barrel body (401) are through-connected, and the width of the mounting groove (403) is the sum of the width of the friction ring (5) and the width of the inner chain plate (2).

3. The length-adjustable chain according to claim 1, characterized in that: The connection holes (3) opened on both sides of the outer link plate (1) have the same outer diameter as the locking structure (6), and the material of the outer link plate (1) and the inner link plate (2) are both 45Mn.

4. The length-adjustable chain according to claim 1, characterized in that: The mounting hole (402) has the same inner diameter as the connecting holes (3) opened on both sides of the outer link plate (1), and the inner diameter of the mounting hole (402) is the same as the outer diameter of the locking structure (6).

5. The length-adjustable chain according to claim 1, characterized in that: The inner diameter of the connection holes (3) opened on both sides of the inner link plate (2) is the same as the outer diameter of the mounting groove (403), and the material of the chain barrel body (401) is 45Mn.

6. The length-adjustable chain according to claim 1, characterized in that: The locking structure (6) adopts a mechanical locking method.

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