A chain

Abstract

This utility model provides a chain, relating to the field of engineering machinery technology. The chain includes chain plates, a connecting shaft, and a sleeve. Two chain plates are arranged in pairs, each chain plate having a first end and a second end. Multiple pairs of chain plates are arranged sequentially so that the first end of a chain plate is connected to the second end of an adjacent pair of chain plates. The connecting shaft passes through the first and second ends of two adjacent pairs of connecting members. The sleeve includes a first connecting member and a second connecting member, the two ends of which are respectively connected to the first ends of the paired chain plates. At least a portion of the first connecting member is arc-shaped, and the second connecting member is bent with its two ends respectively connected to the two ends of the first connecting member. The connecting shaft passes between the first and second connecting members. This design not only realizes the basic function of the chain in mechanical transmission but also has significant advantages in terms of structural simplification, convenient assembly, operational stability, and anti-pollution capability.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and more specifically, to a chain. Background Technology

[0002] As a key mechanical component widely used in conveying, transmission, and material handling, the reliability of chains under harsh working conditions directly affects the overall performance and service life of equipment. However, in dusty industrial environments with high particulate matter concentrations, dust, sand, or other fine particulate impurities can easily penetrate the hinge points or gaps between the chain bars. This not only exacerbates the wear of internal friction pairs, leading to decreased transmission efficiency and increased operating resistance, but can also cause the chain bars to jam or even the entire chain to seize under continuous compression, severely affecting the continuous operation capability of the equipment and the service life of the chain. Utility Model Content

[0003] The purpose of this invention is to provide a chain that allows particles and impurities to fall out from the gap between the connecting shaft and the sleeve, reducing the risk of the chain jamming in dusty environments and improving the chain's service life and operational stability.

[0004] The embodiments of this utility model are implemented as follows:

[0005] In a first aspect, this utility model provides a chain, comprising:

[0006] Multiple chain plates, two chain plates are arranged in pairs, each chain plate has a first end and a second end, and multiple pairs of chain plates are arranged sequentially so that the first end of each chain plate is connected to the second end of an adjacent pair of chain plates;

[0007] A connecting shaft passes through the first and second ends of two adjacent pairs of chain plates;

[0008] The sleeve includes a first connector and a second connector. The two ends of the first connector and the second connector are respectively connected to the first ends of two pairs of chain plates. At least a portion of the first connector is arc-shaped, and the second connector is bent and its two ends are respectively connected to the two ends of the first connector. The connecting shaft passes between the first connector and the second connector.

[0009] In an optional embodiment, the second connector includes two first connecting segments connected at an obtuse angle, and the ends of the two first connecting segments are respectively connected to the two ends of the first connector.

[0010] In an optional embodiment, the first connector includes an arc-shaped segment and a second connecting segment, with one end of each of the two second connecting segments connected to both ends of the arc-shaped segment and the other end connected to the first connecting segment.

[0011] In an alternative embodiment, the two second connecting segments are arranged parallel or at an angle.

[0012] In an optional implementation, the angle between the tangent of the second connecting segment and the arc segment and the preset line is α, where 0°≤α≤10°, and the preset line is a line parallel to the line connecting the midpoint of the arc segment and the connection point of the two first connecting segments.

[0013] In an optional embodiment, the first end is provided with a first through hole, the second end is provided with a second through hole, the connecting shaft passes through the first through hole and the second through hole, and the radius of the first through hole and / or the second through hole is the same as the radius of the circle in which the arc segment is located.

[0014] In an optional embodiment, the connecting shaft is interference-fitted with the first through hole and the second through hole.

[0015] In an optional embodiment, the two ends of the first connector and the second connector are respectively welded to the first ends of the two pairs of chain plates.

[0016] In an optional embodiment, the two ends of the first connector are welded to the two ends of the second connector, respectively.

[0017] In an optional embodiment, the distance between the two first ends of the paired chain plates is less than the distance between the two second ends.

[0018] The beneficial effects of the chain provided in this embodiment of the utility model include: the first connecting member, as the main load-bearing structure of the sleeve, has at least a partially arc-shaped design, allowing this part to form a good fit with the connecting shaft, thereby providing stable support force when the chain is tensioned. Furthermore, the arc-shaped first connecting member not only enhances the fit between the connecting shaft and the sleeve, but also, combined with the bent second connecting member, allows for a certain gap between the connecting shaft and the second connecting member of the sleeve during chain operation. This gap structure helps larger particles and impurities to fall out from the gap between the connecting shaft and the sleeve, reducing the risk of chain jamming in dusty environments and improving the chain's service life and operational stability. Attached Figure Description

[0019] 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.

[0020] Figure 1 A schematic diagram of the chain structure provided for an embodiment of this utility model;

[0021] Figure 2 A schematic diagram of the first embodiment of the sleeve provided in this utility model;

[0022] Figure 3 A schematic diagram of the second embodiment of the sleeve provided in this utility model.

[0023] Icons: 10-Chain; 100-Chain plate; 110-First end; 111-First through hole; 120-Second end; 121-Second through hole; 200-Connecting shaft; 300-Sleeve; 310-First connector; 311-Arc segment; 312-Second connecting segment; 320-Second connector; 321-First connecting segment. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] As a key mechanical component widely used in conveying, transmission, and material handling, the reliability of chains under harsh working conditions directly affects the overall performance and service life of equipment. However, in dusty industrial environments with high particulate matter concentrations, dust, sand, or other fine particulate impurities can easily penetrate the hinge points or gaps between the chain bars. This not only exacerbates the wear of internal friction pairs, leading to decreased transmission efficiency and increased operating resistance, but can also cause the chain bars to jam or even the entire chain to seize under continuous compression, severely affecting the continuous operation capability of the equipment.

[0031] Frequent downtime for cleaning and chain replacement not only increases maintenance costs but also affects production efficiency and system stability. Especially in highly automated production lines, unplanned downtime caused by chain jamming can result in significant economic losses.

[0032] Therefore, there is an urgent need to provide a chain structure with excellent sealing and anti-pollution capabilities to effectively prevent the intrusion of particulate impurities such as dust, improve its operational reliability, durability and maintenance convenience in harsh environments, and meet the application requirements of modern industry for efficient and stable transmission systems.

[0033] Please see Figures 1 to 3 This utility model embodiment provides a chain 10, including a chain plate 100, a connecting shaft 200, and a sleeve 300.

[0034] The chain plates 100 are arranged in pairs, each chain plate 100 having a first end 110 and a second end 120. Multiple pairs of chain plates 100 are arranged sequentially so that the first end 110 of the chain plate 100 is connected to the second end 120 of the adjacent pair of chain plates 100. A connecting shaft 200 passes through the first end 110 and the second end 120 of two adjacent pairs of chain plates 100. The sleeve 300 includes a first connecting member 310 and a second connecting member 320. The two ends of the first connecting member 310 and the second connecting member 320 are respectively connected to the first end 110 of the two paired chain plates 100. At least a portion of the first connecting member 310 is arc-shaped, and the second connecting member 320 is bent and its two ends are respectively connected to the two ends of the first connecting member 310. The connecting shaft 200 passes between the first connecting member 310 and the second connecting member 320.

[0035] In this embodiment, the first connector 310 serves as the main load-bearing structure of the sleeve 300. At least a portion of it is arc-shaped, allowing it to form a good fit with the connecting shaft 200, thus providing stable support when the chain 10 is tensioned. Furthermore, the arc-shaped first connector 310 not only enhances the fit between the connecting shaft 200 and the sleeve 300, but also, in conjunction with the bent second connector 320, allows for a certain gap between the connecting shaft 200 and the second connector 320 of the sleeve 300 during chain operation. This gap structure helps larger particles and impurities to fall out from the gap between the connecting shaft 200 and the sleeve 300, reducing the risk of chain jamming in dusty environments and improving the service life and operational stability of the chain 10.

[0036] The second connector 320 is bent, with its two ends connected to the two ends of the first connector 310, thus forming a closed or semi-closed D-shaped structure. This structural design not only simplifies the manufacturing process of the sleeve 300 and reduces mold development costs, but also makes it easier to weld and connect with the chain plate 100 during assembly, thereby improving production efficiency.

[0037] It should be noted that the two ends of the first connector 310 and the second connector 320 are respectively connected to the first ends 110 of the two paired chain plates 100. This connection method ensures the structural stability between the chain plates 100 and the sleeve 300. Through welding, the connection between the chain plates 100 and the sleeve 300 is more secure, effectively preventing loosening or detachment at the connection when the chain 10 is subjected to large tensile or impact forces. The connection between the connecting shaft 200 and the first ends 110 and 120 of the chain plates 100 is an interference fit. This fit further enhances the overall rigidity and load-bearing capacity of the chain 10, making the chain 10 less prone to deformation or breakage during operation.

[0038] Furthermore, since the arc-shaped segment 311 of the first connector 310 has the same hole diameter as the first end 110 of the chain plate 100, it can be positioned by a mandrel during the welding process, so that the hole of the chain plate 100 is firmly attached to the arc-shaped surface of the first connector 310 of the sleeve 300, thereby ensuring the consistency of welding quality and the reliability of the connection structure.

[0039] Therefore, it can be seen that the chain 10 provided in this embodiment of the present invention, through the reasonable layout and cooperation of the chain plate 100, connecting shaft 200 and sleeve 300, not only realizes the basic function of the chain 10 in the mechanical transmission process, but also has significant advantages in terms of structural simplification, convenient assembly, operational stability and anti-pollution capability. This chain 10 structure is suitable for conveying dusty materials or for use in harsh dusty environments.

[0040] Furthermore, the second connector 320 includes two first connecting segments 321 connected at an angle, the angle being an obtuse angle, and the ends of the two first connecting segments 321 are respectively connected to the two ends of the first connector 310.

[0041] In this embodiment, the two first connecting segments 321 are arranged at an obtuse angle relative to the first connecting member 310. This creates a gap between the connecting shaft 200 and the angle between the two first connecting segments 321 while confining the connecting shaft 200 between the first connecting member 310 and the second connecting member 320. This facilitates the shedding of particles and impurities from the gap between the connecting shaft 200 and the sleeve 300, reducing the risk of chain 10 jamming in dusty environments and improving the service life and operational stability of the chain 10.

[0042] Furthermore, the first connector 310 includes an arc-shaped segment 311 and a second connector 312. One end of each of the two second connectors 312 is connected to both ends of the arc-shaped segment 311, and the other end is connected to the first connector 321.

[0043] In this embodiment, the arc-shaped segment 311 and the two second connecting segments 312 are connected to form a U-shape. The two second connecting segments 312 are arranged in parallel and are respectively connected to the two first connecting segments 321, so that the cross-section of the sleeve 300 is approximately D-shaped. The resulting sleeve 300 has a simple structure, a simple manufacturing process, and high structural strength.

[0044] It should be noted that the two ends of the first connector 310 are welded to the two ends of the second connector 320 respectively (the welding points are shown in the black structure in the figure).

[0045] It is also worth mentioning that in other embodiments of this utility model, such as Figure 3 As shown, the two second connecting sections 312 are set at an angle to accommodate other types of connecting shafts 200 or installation requirements.

[0046] In this embodiment, the distance between the two second connecting segments 312 gradually increases in the direction away from the arc segment 311. The angle between the tangent of the second connecting segment 312 and the arc segment 311 (dashed line A as shown in the figure) and the preset line (dashed line B as shown in the figure) is α, where 0°≤α≤10°. The preset line is a line parallel to the line connecting the midpoint of the arc segment 311 and the connection point of the two first connecting segments 321. The preset line is also the symmetry line of the sleeve 300.

[0047] It is understandable that by setting the two second connecting segments 312 at an angle so that the first connecting segment 321 is perpendicular to the corresponding second connecting segment 312, the connection area between the end of the first connecting segment 321 and the second connecting segment 312 can be increased, thereby increasing the structural strength of the sleeve 300.

[0048] Furthermore, the first end 110 is provided with a first through hole 111, and the second end 120 is provided with a second through hole 121. The connecting shaft 200 passes through the first through hole 111 and the second through hole 121, and the radius of the first through hole 111 and / or the second through hole 121 is the same as the radius of the circle in which the arc segment 311 is located, so as to improve the assembly accuracy between the connecting shaft 200 and the through hole to a certain extent, and ensure that the chain 10 maintains a high structural stability during movement.

[0049] In detail, the connecting shaft 200 is interference-fitted with the first through hole 111 and the second through hole 121.

[0050] In this embodiment, the connecting shaft 200 serves as a key connecting element between adjacent connecting parts in the chain 10. It employs an interference fit with the first through hole 111 and the second through hole 121, enabling a stable connection through the interference fit during assembly without the need for additional locking structures. This fit not only improves the shear strength of the connecting parts but also effectively suppresses the risk of loosening or disengagement of the connecting shaft 200 due to vibration, impact, or periodic loads during the operation of the chain 10.

[0051] In addition, the two ends of the first connector 310 and the second connector 320 are respectively welded to the first ends 110 of the two paired chain plates 100 (the welding position is shown in the black structure in the figure). The first connector 310 and the second connector 320 are core connecting components. Their two ends are respectively welded and fixed to the first ends 110 of the two paired chain plates 100. This not only ensures the connection strength between the connector and the chain plate 100, but also avoids the loosening or wear problems that may exist in the traditional hinge structure, so that the connection part has higher tensile strength and fatigue durability.

[0052] It should also be noted that the distance between the two first ends 110 of the pair of chain plates 100 is less than the distance between the two second ends 120, so that the two first ends 110 of the multiple pairs of chain plates 100 are connected between the two second ends 120 of another adjacent pair of chain plates 100, and the multiple pairs of chain plates 100 are connected in sequence to finally form the chain 10.

[0053] In summary, this utility model provides a chain 10. Through the reasonable layout and cooperation of the chain plate 100, connecting shaft 200, and sleeve 300, the chain 10 not only realizes its basic functions in mechanical transmission, but also has significant advantages in terms of structural simplification, convenient assembly, operational stability, and anti-pollution capability. This chain 10 structure is suitable for conveying dusty materials or for use in harsh dusty environments.

[0054] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A chain, characterized in that, include: Multiple chain plates (100), two chain plates (100) are arranged in pairs, each chain plate (100) has a first end (110) and a second end (120), and multiple pairs of chain plates (100) are arranged sequentially so that the first end (110) of the chain plate (100) is connected to the second end (120) of the adjacent pair of chain plates (100); A connecting shaft (200) passes through the first end (110) and the second end (120) of two adjacent pairs of chain plates (100). A sleeve (300) includes a first connector (310) and a second connector (320). The two ends of the first connector (310) and the second connector (320) are respectively connected to the first ends (110) of two pairs of chain plates (100). At least a portion of the first connector (310) is arc-shaped. The second connector (320) is bent and its two ends are respectively connected to the two ends of the first connector (310). The connecting shaft (200) passes between the first connector (310) and the second connector (320).

2. The chain of claim 1 wherein, The second connector (320) includes two first connecting segments (321) connected at an angle, the angle being obtuse, and the ends of the two first connecting segments (321) are respectively connected to the two ends of the first connector (310).

3. The chain of claim 2 wherein, The first connector (310) includes an arc segment (311) and a second connecting segment (312). One end of each of the two second connecting segments (312) is connected to both ends of the arc segment (311), and the other end is connected to the first connecting segment (321).

4. The chain of claim 3 wherein, The two second connecting segments (312) are arranged in parallel or at an angle.

5. The chain of claim 3 wherein, The angle between the tangent of the second connecting segment (312) and the arc segment (311) and the preset line is a, where 0°≤a≤10°, and the preset line is a line parallel to the line connecting the midpoint of the arc segment (311) and the connection point of the two first connecting segments (321).

6. The chain according to claim 3, characterized in that, The first end (110) is provided with a first through hole (111), and the second end (120) is provided with a second through hole (121). The connecting shaft (200) passes through the first through hole (111) and the second through hole (121), and the radius of the first through hole (111) and / or the second through hole (121) is the same as the radius of the circle in which the arc segment (311) is located.

7. The chain of claim 6 wherein, The connecting shaft (200) is interference-fitted with the first through hole (111) and the second through hole (121).

8. The chain of claim 1 wherein, The two ends of the first connector (310) and the second connector (320) are respectively welded to the first end (110) of the two pairs of chain plates (100).

9. The chain of claim 1 wherein, The two ends of the first connector (310) are respectively welded to the two ends of the second connector (320).

10. The chain of claim 1 wherein, The distance between the two first ends (110) of the paired chain plates (100) is less than the distance between the two second ends (120).

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