Conveying chain for stainless steel plate production line

Abstract

A conveying chain for a stainless steel plate production line comprises chain links connected with each other, and the chain links connected with each other form a cold area chain link matched with a cooling stainless steel plate and a hot area chain link matched with a hot rolling stainless steel plate. Each cold area chain link comprises a first outer chain plate and a first inner chain plate which are connected through a first pin shaft, an outer attaching plate with the top bent outwards is arranged on the inner side of the first outer chain plate, an inner attaching plate with the top bent outwards is arranged on the outer side of the first inner chain plate, and nylon plates are connected to the surfaces of the bent portions of the tops of the outer attaching plate and the inner attaching plate. Each hot area chain link comprises a second outer chain plate and a second inner chain plate which are connected through a second pin shaft, a first cast iron outer attaching plate with the top bent outwards is arranged on the inner side of each second outer chain plate, and a second cast iron inner attaching plate with the top bent outwards is arranged on the outer side of each first inner chain plate. According to the utility model, the cold area chain link and the hot area chain link are arranged, so that the regionalized conveying differential conveying performance of the stainless steel plate from high temperature to low temperature is realized, and the high-temperature conveying performance and the low-temperature lossless conveying performance are realized at the same time.

Description

Technical Field

[0001] This utility model relates to the field of chains, and in particular to the field of conveyor chain technology for stainless steel plate production lines. Background Technology

[0002] The metallurgical industry currently faces severe overcapacity in the production of ordinary thick plates. Major steel mills are upgrading their products, transforming their existing ordinary thick plate production lines into nickel- and titanium alloy thick plate production lines, i.e., stainless steel plate production lines. Due to the special characteristics of stainless steel products, they require high surface quality and cleanliness, free from any bumps, scratches, or oil stains. The conveyor chains currently used for thick plates are no longer sufficient to meet the quality requirements of the upgraded products. Therefore, developing and producing a conveyor chain suitable for stainless steel plate production lines is crucial for supporting the upgrading and transformation of steel mills and solving the product conveying problem in the metallurgical industry. Domestic metallurgical enterprises have numerous cold-rolled and hot-rolled thick plate production lines, and these enterprises frequently undertake technological upgrades. These production lines require regular maintenance and replacement of critical components such as conveyor chains, resulting in a huge market demand.

[0003] Currently, there is no conveyor chain on the market specifically designed for production lines producing thick stainless steel plates. Using ordinary conveyor chains for thick plate production lines easily causes scratches and bumps to the stainless steel plates. Furthermore, ordinary conveyor chains for thick plate production lines cannot achieve damage-free transport from high to low temperatures. Therefore, a conveyor chain for production lines that can achieve damage-free transport from high to low temperatures is needed. Utility Model Content

[0004] This invention provides a conveyor chain for production lines that enables differentiated conveying of stainless steel plates from high to low temperatures, achieving both high-temperature and low-temperature non-destructive conveying performance.

[0005] A conveyor chain for a stainless steel plate production line includes interconnected chain links, forming a cold zone chain link for cooling stainless steel plates and a hot zone chain link for hot-rolled stainless steel plates. The cold zone chain link includes a first outer chain plate and a first inner chain plate connected by a first pin. The inner side of the first outer chain plate has an outer appendage plate bent outwards at the top, and the outer side of the first inner chain plate has an inner appendage plate bent outwards at the top. Nylon plates are attached to the bent surfaces at the top of both the outer and inner appendage plates. The hot zone chain link includes a second outer chain plate and a second inner chain plate connected by a second pin. The inner side of the second outer chain plate has a first cast iron outer appendage plate bent outwards at the top, and the outer side of the second inner chain plate has a second cast iron inner appendage plate bent outwards at the top. This invention, by setting up cold and hot zone chain links, allows the hot zone chain link to adapt to high-temperature environments and the cold zone chain link to adapt to low-temperature requirements. The combination of the cold and hot zone chain links ensures that the conveyor chain can operate continuously on the entire production line without segmentation or replacement, avoiding downtime or efficiency loss due to chain switching. Through the rational design of materials and structure, the cold and hot zone links can smoothly transition in temperature change areas (such as the cooling section after hot rolling), reducing chain deformation or plate displacement caused by temperature differences.

[0006] A sleeve is fitted around the outer periphery of the first pin, and a roller is fitted around the outer periphery of the sleeve. The sleeve has radially concave-convex stepped structures at both ends along the axial direction, with the end faces of the stepped structures forming a surface contact fit with the inner surface of the first inner chain plate. The outer surfaces of the axial ends of the sleeve are connected to the inner surfaces of the first outer chain plate. The chain sleeve uses a self-made steel-based inlaid graphite self-lubricating bushing, which reduces production costs while effectively meeting the chain's lubrication and tensile strength requirements. It also solves technical problems such as high frictional resistance during chain operation and avoids secondary contamination of the product surface caused by adding lubricating oil to the chain.

[0007] A first L-shaped structural plate is provided between the outer plate and the roller. The first L-shaped structural plate includes a first vertical bending section and a first horizontal extension section. The first horizontal extension section is connected to the bottom surface of the outer plate through a first welding point. The outer plate is connected to the top of the first outer chain plate through a second welding point. The outer plate is connected to the nylon plate by screws. The vertical bending section and the horizontal extension section of the L-shaped structure form a right-angle support, which can evenly distribute the vertical and horizontal loads on the outer plate to the welding points, avoiding local deformation or breakage caused by stress concentration. The horizontal extension section is fixed to the bottom surface of the outer plate through the first welding point, and the outer plate is connected to the top of the first outer chain plate through the second welding point, which significantly enhances the overall rigidity of the chain links and prevents the components from loosening due to vibration or impact during operation.

[0008] The outer side of the inner plate is provided with a second L-shaped structure, which includes a second vertical bending section and a second horizontal extension section. The second vertical bending section is connected to the top of the first inner chain plate through a third welding point, and the second horizontal extension section is connected to the bottom surface of the inner plate through a fourth welding point. The inner plate and the nylon plate are connected by screws. The L-shaped structure achieves a lightweight design through the connection of local welding points, reducing the impact of the chain's own weight on the running resistance. At the same time, the low friction characteristics of the nylon plate further optimize the conveying efficiency in the cold zone.

[0009] A stop block is provided at the connection between the outer plate and the first outer chain plate. The stop block is connected to the first outer chain plate through a fifth welding point and a sixth welding point. The stop block is fixed to the first outer chain plate through the fifth and sixth welding points, forming a rigid connection between the stop block and the outer plate. This can evenly distribute the dynamic loads such as longitudinal tension and lateral vibration generated during chain operation to multiple welding points, avoiding failure of a single welding point due to stress concentration.

[0010] This invention solves the problem of regionalized conveying performance differences of stainless steel plates from high temperature to low temperature by setting cold zone links and hot zone links, and at the same time achieves high temperature conveying and low temperature lossless conveying performance. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings:

[0012] Figure 1 This is a top view schematic diagram of a conveyor chain used in a stainless steel plate production line.

[0013] Figure 2 This is a schematic diagram of the main structure of a conveyor chain used in a stainless steel plate production line.

[0014] Figure 3 A schematic diagram of a conveyor chain AA structure used in a stainless steel plate production line;

[0015] Figure 4 A schematic diagram of a conveyor chain BB structure used in a stainless steel plate production line;

[0016] Figure 5 A schematic diagram of a CC conveyor chain structure for a stainless steel plate production line;

[0017] Figure 6 This is a schematic diagram of a nylon sheet conveyor chain structure for a stainless steel sheet production line. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-6 The specific implementation method further illustrates the technical solution of this patent.

[0019] A conveyor chain for a stainless steel plate production line includes interconnected chain links, which form a cold zone chain link for cooling stainless steel plates and a hot zone chain link for hot-rolled stainless steel plates. The cold zone chain link includes a first outer chain plate 7 and a first inner chain plate 2 connected by a first pin 6. The inner side of the first outer chain plate 7 is provided with an outer attachment plate 8 bent outward at the top, and the outer side of the first inner chain plate 2 is provided with an inner attachment plate 3 bent outward at the top. Nylon plates 4 are connected to the bent surfaces at the top of both the outer attachment plate 8 and the inner attachment plate 3. The hot zone chain link includes a second outer chain plate 25 and a second inner chain plate 13 connected by a second pin 24. The inner side of the second outer chain plate 25 is provided with a first cast iron outer attachment plate 23 bent outward at the top, and the outer side of the second inner chain plate 13 is provided with a second cast iron inner attachment plate 12 bent outward at the top.

[0020] As a preferred structure, the first pin 6 is sleeved around the outer periphery of the sleeve 5, and the sleeve 5 is sleeved around the outer periphery of the roller 1; the two ends of the sleeve 5 along the axial direction are respectively formed with radially concave and convex stepped structures 22, and the end face of the stepped structure 22 forms a surface contact fit with the inner side surface of the first inner chain plate 2; the outer surfaces of the two ends of the sleeve 5 along the axial direction are respectively connected to the inner side surface of the first outer chain plate 7.

[0021] To further improve the service life of the conveyor chain, a first L-shaped structural plate 15 is provided between the outer plate 8 and the roller 1. The first L-shaped structural plate 15 includes a first vertical bending section 16 and a first horizontal extension section 27. The first horizontal extension section 27 is connected to the bottom surface of the outer plate 8 through a first welding point 17. The outer plate 3 is connected to the top of the first outer chain plate 7 through a second welding point 18. The outer plate 8 is connected to the nylon plate 4 through screws 19.

[0022] Preferably, the outer side of the inner plate 3 is provided with a second L-shaped structure 20, which includes a second vertical bending section 21 and a second horizontal extension section 26. The second vertical bending section 21 is connected to the top of the first inner chain plate 2 through a third welding point 29, and the second horizontal extension section 26 is connected to the bottom surface of the inner plate 3 through a fourth welding point 28. The inner plate 3 and the nylon plate 4 are connected by screws.

[0023] Preferably, a stop block 9 is provided at the connection between the outer plate 3 and the first outer link plate 7, and the stop block 9 is connected to the first outer link plate 7 through a fifth welding point 30.

[0024] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A conveyor chain for a stainless steel plate production line, comprising interconnected chain links, characterized in that: The interconnected links form a cold zone link for cooling stainless steel plates and a hot zone link for hot-rolled stainless steel plates; the cold zone link includes a first outer link plate (7) and a first inner link plate (2) connected by a first pin (6), the inner side of the first outer link plate (7) is provided with an outer attachment plate (8) bent outward from the top, the outer side of the first inner link plate (2) is provided with an inner attachment plate (3) bent outward from the top, and the bent surfaces at the top of the outer attachment plate (8) and the inner attachment plate (3) are both connected with nylon plates (4); the hot zone link includes a second outer link plate (25) and a second inner link plate (13) connected by a second pin (24), the inner side of the second outer link plate (25) is provided with a first cast iron outer attachment plate (23) bent outward from the top, and the outer side of the second inner link plate (13) is provided with a second cast iron inner attachment plate (12) bent outward from the top.

2. The conveyor chain for a stainless steel plate production line according to claim 1, characterized in that: The first pin (6) is sleeved around the outer periphery of the sleeve (5), and the sleeve (5) is sleeved around the outer periphery of the roller (1); the sleeve (5) has radially concave and convex stepped structures (22) at both ends along the axial direction, and the end face of the stepped structure (22) forms a surface contact fit with the inner surface of the first inner chain plate (2); the outer surface of the axial end of the sleeve (5) is connected to the inner surface of the first outer chain plate (7).

3. The conveyor chain for a stainless steel plate production line according to claim 1, characterized in that: The outer plate (8) and the roller (1) are provided with a first L-shaped structural plate (15). The first L-shaped structural plate (15) includes a first vertical bending section (16) and a first horizontal extension section (27). The first horizontal extension section (27) is connected to the bottom surface of the outer plate (8) through a first welding point (17). The outer plate (8) is connected to the top of the first outer chain plate (7) through a second welding point (18). The outer plate (8) and the nylon plate (4) are connected by screws (19).

4. The conveyor chain for a stainless steel plate production line according to claim 1, characterized in that: The inner plate (3) is provided with a second L-shaped structure (20) on the outside. The second L-shaped structure (20) includes a second vertical bending section (21) and a second horizontal extension section (26). The second vertical bending section (21) is connected to the top of the first inner chain plate (2) through a third welding point (29). The second horizontal extension section (26) is connected to the bottom surface of the inner plate (3) through a fourth welding point (28). The inner plate (3) and the nylon plate (4) are connected by screws.

5. The conveyor chain for a stainless steel plate production line according to claim 1, characterized in that: A stop block (9) is provided at the connection between the outer plate (3) and the first outer chain plate (7), and the stop block (9) and the first outer chain plate (7) are connected by a fifth welding point (30).

Images