A conveyor chain for scratch protection

Abstract

The utility model discloses a conveying chain for preventing scratch relates to flat steel production equipment technical field in rolling mill. Including the chain link of first direction head -to -tail in proper order hinged in plurality, and chain link includes two opposite setting's inner chain board distribution in the second direction perpendicular to first direction, two pivot assembly of the both ends of inner chain board and the roller of hinged sleeve set in the both ends of pivot assembly, along first direction, the outer chain board is provided between two adjacent inner chain board to connect two adjacent chain links, along second direction, the outer chain board is set between inner chain board and the roller, along respectively perpendicular to first direction and the third direction of second direction, the top surface of outer chain board and inner chain board is flush, and the top surface of roller is 1mm~3mm higher than the top surface of outer chain board or inner chain board, and the surface of roller is provided with wear -resisting layer. The utility model can convert the sliding friction between flat steel and chain board into the rolling friction between roller, and makes the flat steel run more smoothly on the conveying chain.

Description

Technical Field

[0001] This utility model relates to the technical field of flat steel production equipment in steel rolling mills, specifically a conveyor chain for preventing scratches. Background Technology

[0002] In the flat steel production process at steel rolling mills, flat steel is collected and conveyed via segmented chain beds. Traditional chains have a fixed chain plate structure. When the flat steel transitions from one segment of the chain bed to another, the height difference between the two segments causes sliding friction between the bottom of the flat steel and the chain plate, resulting in scratches on the flat steel surface (commonly known as "scratching"), affecting product quality and increasing the scrap rate. Although existing technologies employ lubrication or chain plate surface polishing processes, over time, it is still impossible to completely eliminate the sliding friction between the flat steel surface and the chain plate, and maintenance costs are high. Utility Model Content

[0003] The purpose of this invention is to provide a conveyor chain for preventing scratches, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a conveyor chain for scratch prevention, comprising multiple chain links that are sequentially hinged end-to-end along a first direction, the first direction being the length direction of the conveyor chain. Each chain link includes two opposing inner chain plates distributed along a second direction, two rotating shaft assemblies passing through the ends of the inner chain plates, and rollers hinged to both ends of the rotating shaft assemblies. Along the first direction, an outer chain plate is disposed between two adjacent inner chain plates to connect the two adjacent chain links. Along the second direction, the outer chain plate is disposed between the inner chain plates and the rollers. The second direction is perpendicular to the first direction. Along a third direction, the top surfaces of the outer chain plate and the inner chain plate are flush, and the top surface of the roller is 1mm to 3mm higher than the top surface of either the outer or inner chain plate. The surface of the roller is provided with a wear-resistant layer. The third direction is perpendicular to both the first and second directions.

[0005] Based on the above technical features, this utility model symmetrically arranges freely rotatable rollers on both sides of the conveyor chain. The surface of the rollers that contacts the flat steel is 1mm to 3mm higher than the chain plate plane. When the flat steel transitions from one chain bed to another, the bottom of the flat steel only contacts the rollers, and the driving force of the flat steel movement drives the rollers to rotate passively, converting the sliding friction between the flat steel and the chain plate into rolling friction with the rollers (the coefficient of friction is reduced from 0.15 to below 0.01). At the same time, the 1mm to 3mm height difference between the rollers and the chain plate also allows the flat steel to effectively adapt to the speed difference between the two chain beds when transitioning from one chain bed to another, making the flat steel run more smoothly on the conveyor chain. The wear-resistant layer on the surface of the rollers also effectively reduces the frequency of roller maintenance and reduces maintenance costs.

[0006] In this preferred embodiment, the outer chain plate is located outside the inner chain plate, and the roller is located outside the outer chain plate. Along the second direction, the roller, outer chain plate, and inner chain plate are arranged sequentially and abut against each other.

[0007] In a preferred embodiment of this technical solution, the rotating shaft assembly includes a sleeve, a roller, and a pin. The outer chain plate and the inner chain plate are hinged to each other via the sleeve, which is a hollow component. The roller is sleeved on the outer surface of the sleeve and is located between two inner chain plates distributed along a second direction, serving to laterally limit the two opposing inner chain plates. The pin passes through the sleeve along the second direction, and the roller is hinged to both ends of the pin.

[0008] Based on the above technical features, the roller is set between two inner chain plates to laterally limit the two inner chain plates and prevent the chain plates from dislodging; at the same time, the chain plates are connected to the sleeve and the rollers are connected to the pins. The chain plates and rollers move independently to avoid mutual interference between their movements, so as to adapt to long-distance, multi-axis transmission operation conditions.

[0009] In a preferred embodiment of this technical solution, the conveyor chain further includes a limiting component, which includes an elastic retaining ring and a retaining spring. Both ends of the pin are provided with limiting grooves that cooperate with the retaining spring. The elastic retaining ring is sleeved on the pin and is located on the side of the roller away from the outer chain plate. The elastic retaining ring can cooperate with the retaining spring inserted into the limiting groove to limit the roller laterally.

[0010] Based on the above technical features, the snap ring uses elastic deformation to snap into the limiting groove, and works in conjunction with the elastic retaining ring to significantly reduce the axial movement of the roller, thus meeting the requirements of high-precision axial positioning.

[0011] In this preferred embodiment, the conveyor chain further includes a flat washer, which is sleeved on the pin and located between the roller and the outer chain plate.

[0012] Based on the above technical features, the flat washer, as an isolation layer between the roller and the chain plate, can reduce the direct sliding friction between the roller and the chain plate, effectively reduce the wear rate, extend the service life of the roller and the chain plate, and at the same time, maintain the smoothness of the roller rotation.

[0013] In this preferred embodiment, the rollers are evenly distributed along the first direction, and the axes of the rollers are all parallel to the second direction.

[0014] In this preferred embodiment, the outer surface of the roller is subjected to quenching or plating treatment.

[0015] Based on the above technical features, the wear resistance of the roller surface can be effectively enhanced, thereby effectively reducing the number of times the roller needs to be maintained and reducing maintenance costs.

[0016] In this preferred embodiment, the roller is a self-lubricating bearing.

[0017] Based on the above technical features, the tedious maintenance of manually lubricating the rollers periodically is eliminated, effectively improving the wear resistance of the rollers. Attached Figure Description

[0018] Figure 1 This is a top view of the conveyor chain in an embodiment of the present invention;

[0019] Figure 2 This is a side view of the conveyor chain in an embodiment of the present invention.

[0020] In the diagram: 1. Pin; 2. Outer link plate; 3. Inner link plate; 4. Flat washer; 5. Elastic retaining ring; 6. Roller; 7. Sleeve; 8. Roller. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that in the description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0023] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0025] like Figures 1 to 2As shown, this utility model provides the following technical solution: a conveyor chain for scratch prevention, comprising multiple chain links that are sequentially hinged end-to-end along a first direction. Each chain link includes two opposing inner chain plates 3 distributed along a second direction, two rotating shaft assemblies passing through the ends of the inner chain plates 3, and rollers 8 hingedly sleeved at both ends of the rotating shaft assemblies. The first direction is the length direction of the conveyor chain. Along the first direction, an outer chain plate 2 is disposed between two adjacent inner chain plates 3 to connect the two adjacent chain links. Along the second direction, the outer chain plate 2 is disposed between the inner chain plates 3 and the rollers 8. The aforementioned second direction is perpendicular to the first direction.

[0026] like Figure 2 As shown, along a third direction perpendicular to the first and second directions respectively, the top surfaces of the outer chain plate 2 and the inner chain plate 3 are flush, and the top surface of the roller 8 is higher than the top surface of either the outer chain plate 2 or the inner chain plate 3. The surface of the roller 8 is provided with a wear-resistant layer. When the flat steel transitions from one section of the chain bed to another, the bottom of the flat steel may only contact the roller 8, and the driving force of the moving flat steel will cause the roller 8 to rotate passively, converting the sliding friction between the flat steel and the chain plate into rolling friction with the roller (the coefficient of friction is reduced from 0.15 to below 0.01).

[0027] Furthermore, the top surfaces of the outer chain plate 2 and the inner chain plate 3 are flush, with the outer chain plate 2 located outside the inner chain plate 3. The roller 8 is located outside the outer chain plate 2. Along the second direction, the roller 8, outer chain plate 2, and inner chain plate 3 are arranged sequentially and abut against each other. The rollers 8 are evenly distributed along the first direction, and the axes of the rollers 8 are all parallel to the second direction. Simultaneously, the top surface of the roller 8 is 1mm to 3mm higher than the top surface of the outer chain plate 2 or the inner chain plate 3. This appropriate height difference allows the flat steel to effectively adapt to the speed difference between the two chain bed sections when transitioning from one section to another, making the flat steel run more smoothly on the conveyor chain. The surface of the roller 8 is provided with a wear-resistant layer to effectively reduce the frequency of maintenance and lower maintenance costs.

[0028] like Figure 1 and Figure 2 As shown, the rotating shaft assembly includes a sleeve 7, a roller 6, and a pin 1. The outer chain plate 2 and the inner chain plate 3 are hinged together by the sleeve 7, which is a hollow component. The roller 6 is fitted onto the outer surface of the sleeve 7 and is located between two inner chain plates 3 distributed along a second direction. The roller 6 serves to laterally limit the two opposing inner chain plates 3, preventing lateral dislocation between the inner chain plate 3 and the outer chain plate 2. The pin 1 passes through the sleeve 7 along the second direction, and rollers 8 are hinged to both ends of the pin 1. The inner chain plate 3 and the outer chain plate 4 are hinged to the sleeve 7, and the rollers 8 are hinged to the pin 1. The chain plates and rollers 8 move independently, avoiding mutual interference during their movement, thus adapting to the operating conditions of long-distance, multi-axis transmission conveyor chains.

[0029] Furthermore, the conveyor chain also includes a limiting assembly, which includes an elastic retaining ring 5 and a snap ring. Both ends of the pin 1 are provided with limiting grooves that cooperate with the snap ring. The elastic retaining ring 5 is sleeved on the pin 1, and the elastic retaining ring 5 is located on the side of the roller 8 away from the outer chain plate 2. The snap ring uses elastic deformation to engage with the limiting groove. At the same time, working together with the elastic retaining ring 5, the axial movement of the roller 8 can be significantly reduced, which can meet the high-precision axial positioning.

[0030] like Figure 1 As shown, the conveyor chain also includes a flat washer 4, which is sleeved on the pin 1 and located between the roller 8 and the outer chain plate 2. In this invention, the flat washer 4 serves as an isolation layer between the roller 8 and the chain plate, reducing direct sliding friction between them, effectively lowering wear rate, extending the service life of both the roller 8 and the chain plate, and maintaining smooth rotation of the roller 8.

[0031] In this invention, the roller 8 is made of high-hardness wear-resistant alloy steel or ceramic composite material. The outer surface of the roller 8 is quenched or coated to enhance its wear resistance, thereby effectively reducing the frequency of maintenance and lowering maintenance costs. Furthermore, to eliminate the tedious manual lubrication of the roller 8 and further reduce maintenance costs, all rollers 8 on the conveyor chain utilize self-lubricating bearings, effectively improving their wear resistance.

[0032] In this invention, the diameter of the roller 8 can be 30mm to 70mm, and the center distance between the rollers 8 (the distance between the centers of two adjacent rollers) can be selected from 80mm to 120mm. Meanwhile, the running speed of the conveyor chain can be adjusted from 0.5m / s to 2m / s, and it can convey and collect flat steel with a thickness of 9mm to 50mm and a width of 60mm to 140mm.

[0033] Meanwhile, using the chain in this invention to transport and collect flat steel can reduce the scratch rate of flat steel by more than 90% and extend the service life of the transport chain by 30% to 50%.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A scribe-protected conveyor chain, characterized in that It includes multiple chain links that are sequentially hinged end-to-end along a first direction, where the first direction is the length direction of the conveyor chain. The chain link includes two opposing inner chain plates (3) distributed along the second direction, two rotating shaft assemblies passing through the beginning and end of the inner chain plates (3), and rollers (8) hinged to both ends of the rotating shaft assemblies; Along the first direction, an outer link plate (2) is provided between two adjacent inner link plates (3) to connect the two adjacent links; Along the second direction, the outer chain plate (2) is disposed between the inner chain plate (3) and the roller (8); the second direction is perpendicular to the first direction; Along the third direction, the top surfaces of the outer chain plate (2) and the inner chain plate (3) are flush, and the top surface of the roller (8) is 1mm to 3mm higher than the top surface of the outer chain plate (2) or the inner chain plate (3); the surface of the roller (8) is provided with a wear-resistant layer; the third direction is perpendicular to the first direction and the second direction respectively.

2. The conveyor chain of claim 1, wherein, The outer chain plate (2) is located outside the inner chain plate (3), and the roller (8) is located outside the outer chain plate (2). Along the second direction, the roller (8), the outer chain plate (2) and the inner chain plate (3) are arranged in sequence and abut against each other.

3. The conveyor chain of claim 2, wherein, The rotating shaft assembly includes a sleeve (7), a roller (6), and a pin (1), wherein, The outer chain plate (2) and the inner chain plate (3) are hinged to each other by a sleeve (7), which is a hollow component. The roller (6) is sleeved on the outer surface of the sleeve (7), and the roller (6) is located between two inner chain plates (3) distributed along the second direction, for lateral limiting of the two opposing inner chain plates (3); The pin (1) passes through the sleeve (7) in the second direction, and the roller (8) is hinged to both ends of the pin (1).

4. The conveyor chain of claim 3, wherein, It also includes a limiting component, which includes an elastic retaining ring (5) and a retaining spring. Both ends of the pin (1) are provided with limiting grooves that cooperate with the retaining spring. The elastic retaining ring (5) is sleeved on the pin (1), and the elastic retaining ring (5) is located on the side of the roller (8) away from the outer chain plate (2). The elastic retaining ring (5) can cooperate with the snap ring inserted into the limiting groove to limit the roller (8) laterally.

5. The conveyor chain of claim 3, wherein, It also includes a flat washer (4), which is sleeved on the pin (1) and located between the roller (8) and the outer chain plate (2).

6. The conveyor chain of claim 1, wherein, The rollers (8) are evenly distributed along the first direction, and the axes of the rollers (8) are all parallel to the second direction.

7. The conveyor chain of claim 1, wherein, The outer surface of the roller (8) is hardened or plated.

8. The conveyor chain according to any one of claims 1 to 7, characterized in that The roller (8) uses a self-lubricating bearing.

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