Using method of crane clamp guard plate capable of preventing steel coil from being hoisted and damaged

Abstract

The invention discloses a using method of a traveling crane clamp protective plate capable of preventing a steel coil from being hoisted and damaged, and the traveling crane clamp protective plate capable of preventing the steel coil from being hoisted and damaged comprises a traveling crane body and the steel coil; the travelling crane body comprises a travelling crane clamp, a lifting appliance protection plate and a bolt; a travelling crane clamp is arranged on the travelling crane body and is used for clamping and moving a steel coil; and the lifting appliance protection plate is mounted on the inner side of the travelling crane clamp and is firmly connected with the travelling crane clamp through a bolt. By changing the appearance and the size of the traveling crane hanger guard plate and increasing the thickness of the bottom of the guard plate, the risk that the edge of a steel coil is rubbed is greatly reduced, the hanging damage rate of the edge of the steel coil is reduced, material withdrawing and repairing losses are reduced, the belt breakage accident caused by the edge damage of supplied materials of a continuous rolling unit is reduced, and the production stability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cold rolling and continuous rolling mill production, and in particular to a method for using a crane clamp guard plate to prevent steel coil hoisting damage. Background Art

[0002] Under the production background of "product structure optimization and adjustment" of the cold-rolled 1720 acid-rolled unit, a large number of high-grade silicon steel products with rough edge coils (rolled without trimming) with a thickness of 0.35 are produced. Due to the special properties of high-grade silicon steel, the quality requirements for the edges of the raw materials of the incoming step beam are extremely high, and no defects such as edge damage can occur, otherwise rolling is very likely to cause belt breakage accidents. Because the crane hoist can scratch the side of the outer ring of the steel coil during the lifting process, the entrance loading inspection is frequently withdrawn due to edge damage. In individual batches of silicon steel raw materials, the edge damage withdrawal reaches 18 coils (360 tons), which has a serious impact on the planned production. After the withdrawal, the loss of steel coil repair is large, and the loss of each coil repair reaches 3,000 yuan.

[0003] Therefore, the applicant, based on many years of rich experience in design, development and actual production in the relevant industry, has conducted research and improvements on the existing structures and deficiencies, and provided a method for using a crane clamp guard plate to prevent steel coil hoisting damage, in order to achieve a more practical purpose. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a method for using a crane clamp guard plate for preventing steel coil hoisting damage, thereby solving the problem of edge damage caused by the guard plate rubbing against the side of the steel coil.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method for using a crane clamp guard plate to prevent steel coil from being damaged during hoisting, comprising a crane clamp guard plate to prevent steel coil from being damaged during hoisting, the device comprising a crane body and a steel coil; the crane body comprising a crane clamp, a hanger guard plate and bolts; the crane body is equipped with a crane clamp, the function of which is to clamp and move the steel coil; the hanger guard plate is installed on the inner side of the crane clamp, and the two are firmly connected by bolts;

[0008] The specific operations are as follows:

[0009] S1: When lifting the steel coil, first make sure that the connecting bolts between the hoisting guard plate and the crane clamp are tightened to ensure that the guard plate will not fall off during the lifting process;

[0010] S2: Operate the crane to move above the steel coil and use the crane clamp to clamp the steel coil. During the clamping process, the hoist guard plate can effectively protect the steel coil from damage and prevent damage caused by friction or impact between the steel coil and the clamp during the lifting process;

[0011] S3: After clamping is completed, the crane slowly lifts the steel coil. During the lifting process, the hoist guard plate continues to play a protective role, ensuring that the steel coil is lifted to the designated location smoothly and safely;

[0012] S4: After reaching the destination, the crane slowly descends until the steel coil is stably placed at the target position, and then the crane clamp is released to complete the entire lifting process. Through the above operations, the loss of steel coils during the lifting process can be effectively reduced.

[0013] Preferably, the hoist guard plate is specifically thickened by 25 mm at the bottom. During the lifting process of the steel coil, there is at least a single-side gap of 25 mm between the side of the outer ring of the steel coil and the clamp guard plate, which effectively prevents the outer ring of the steel coil from overflowing and being scratched and damaged.

[0014] Preferably, the area 100 mm below the thickened area of ​​the spreader guard plate is thinned and cut into a plane chamfer;

[0015] The area 50 mm above the thickened area of ​​the hoist guard plate is thinned and cut into a plane chamfer. Its function is to effectively reduce the damage to the steel coil caused by the thickened step during the hoisting or lowering of the steel coil.

[0016] Preferably, the material of the sling guard plate is a high temperature resistant and corrosion resistant alloy material, and its surface is treated with wear resistance, which can be sandblasted, plated or coated with wear-resistant materials to resist wear and scratches on the surface of the steel coil, thereby extending the replacement cycle of the guard plate.

[0017] Preferably, the hanger guard plate can be designed to be adjustable, and can be quickly adjusted by adding a mechanical device to adapt to steel coils of different sizes and weights, thereby avoiding damage to the surface of the steel coil.

[0018] Preferably, the installation method of the sling guard plate can adopt a modular design, so that replacement and maintenance are faster. The modular design allows for quick removal and replacement of damaged guard plate parts without replacing the entire guard plate.

[0019] The above two improvements can effectively solve the problem of the crane clamp guard plate damaging the side of the steel coil when the crane is lifting the steel coil, reduce the loss of steel coil removal and repair and the loss of edge cracking and broken strip during production line rolling.

[0020] (III) Beneficial effects

[0021] The present invention provides a method for using a protective plate of a crane clamp to prevent damage to a steel coil hoist. It has the following beneficial effects:

[0022] By changing the shape and size of the crane hoist guard plate and increasing the thickness of the bottom of the guard plate, the risk of scratching the edge of the steel coil is greatly reduced, the damage rate of the steel coil edge is reduced, the loss of material withdrawal and repair is reduced, and the accident of strip breakage due to damage to the edge of the incoming material in the continuous rolling unit is reduced, thereby improving production stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the present invention;

[0025] Figure 3 This is a usage state diagram of the present invention.

[0026] In the figure: 1. Crane clamp, 2. Hanger guard plate, 3. Bolts, 4. Steel coil. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-3 The present invention provides a technical solution: a method for using a crane clamp guard plate to prevent steel coil from being damaged by hoisting, comprising a crane clamp guard plate to prevent steel coil from being damaged by hoisting, the device comprising a crane body and a steel coil 4; the crane body comprises a crane clamp 1, a hoist guard plate 2 and bolts 3; the crane body is equipped with a crane clamp 1, and its function is to clamp and move the steel coil 4; the hoist guard plate 2 is installed on the inner side of the crane clamp 1, and the two are firmly connected by bolts 3;

[0029] In the first embodiment, when working, the specific operations are as follows:

[0030] S1: When lifting the steel coil, first ensure that the connecting bolts 3 between the lifting device guard plate 2 and the crane clamp 1 are tightened to ensure that the guard plate will not fall off during the lifting process;

[0031] S2: Operate the crane to move above the steel coil 4, and use the crane clamp 1 to clamp the steel coil 4. During the clamping process, the hoisting device guard plate 2 can effectively protect the steel coil 4 from damage, thereby preventing damage caused by friction or collision between the steel coil and the clamp during the hoisting process;

[0032] S3: After the clamping is completed, the crane slowly lifts the steel coil 4. During the lifting process, the hoisting device guard plate 2 continues to play a protective role to ensure that the steel coil 4 is lifted to the designated position smoothly and safely;

[0033] S4: After reaching the destination, the crane slowly descends until the steel coil 4 is stably placed at the target position, and then the crane clamp 1 is released to complete the entire lifting process. Through the above operation, the loss of the steel coil during the lifting process can be effectively reduced.

[0034] The hoisting guard plate 2 is specifically thickened by 25 mm at the bottom. During the hoisting process of the steel coil 4, there is at least a single-side gap of 25 mm between the side of the outer ring of the steel coil 4 and the clamp guard plate 2, which effectively prevents the outer ring of the steel coil from overflowing and being scratched and damaged.

[0035] The area 100mm below the thickened area of ​​the spreader guard plate 2 is thinned and cut into a plane chamfer;

[0036] The area 50mm above the thickened area of ​​the hoist guard plate 2 is thinned and cut into a plane chamfer. Its function is to effectively reduce the damage to the steel coil caused by the thickened step during the hoisting or landing of the steel coil.

[0037] The above two improvements can effectively solve the problem of the crane clamp guard plate damaging the side of the steel coil when the crane is lifting the steel coil, reduce the loss of steel coil removal and repair and the loss of edge cracking and broken strip during production line rolling.

[0038] In the second embodiment, considering that the crane clamp guard plate works in a high temperature environment, the material selection of the hanger guard plate 2 adopts a high temperature resistant and corrosion resistant alloy material to ensure that the performance of the guard plate is not affected in high temperature and harsh environment, thereby extending the service life. The surface is subjected to wear-resistant treatment, which can be sandblasting, plating or coating with wear-resistant materials to resist wear and scratching on the surface of the steel coil 4, thereby extending the replacement cycle of the guard plate.

[0039] In the third embodiment, the hanger guard plate 2 can be designed to be adjustable, and a mechanical device can be added to quickly adjust it to adapt to steel coils 4 of different sizes and weights, avoiding damage to the surface of the steel coil 4. This design not only improves the versatility of the clamp, but also reduces the time and labor intensity required to replace the guard plate.

[0040] In the fourth embodiment, the installation method of the spreader guard plate 2 can adopt a modular design, which makes replacement and maintenance faster. The modular design allows the damaged guard plate part to be quickly disassembled and replaced without replacing the entire guard plate. Without replacing the entire guard plate, maintenance costs and downtime are further reduced.

[0041] Finally, in order to ensure the improvement effect of the crane clamp guard plate, multiple actual lifting tests were carried out to verify the performance and reliability of the newly designed guard plate under various working conditions. The test results show that the newly designed guard plate can effectively reduce the damage rate of steel coils, improve lifting efficiency, and provide solid technical support for the safe transportation of steel coils.

[0042] To sum up, by changing the shape and size of the crane hoist guard plate and increasing the thickness of the bottom of the guard plate, the risk of scratching the edge of the steel coil is greatly reduced, the damage rate of the steel coil edge is reduced, the loss of material withdrawal and repair is reduced, and the continuous rolling unit's broken belt accidents due to damaged edges of incoming materials are reduced, thereby improving production stability.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for using a protective plate for a crane clamp to prevent damage to a steel coil hoisting, comprising a protective plate for a crane clamp to prevent damage to a steel coil hoisting, characterized in that: The device comprises a crane body and a steel coil (4); the crane body comprises a crane clamp (1), a hanger guard plate (2) and bolts (3); the crane body is provided with a crane clamp (1), the function of which is to clamp and move the steel coil (4); the hanger guard plate (2) is installed on the inner side of the crane clamp (1), and the two are firmly connected by bolts (3); The specific operations are as follows: S1: When lifting the steel coil, first ensure that the connecting bolts (3) between the lifting device guard plate (2) and the crane clamp (1) are tightened to ensure that the guard plate will not fall off during the lifting process; S2: operate the crane to move to the top of the steel coil (4), and use the crane clamp (1) to clamp the steel coil (4). During the clamping process, the hoisting device guard plate (2) can effectively protect the steel coil (4) from damage, thereby preventing damage caused by friction or collision between the steel coil and the clamp during the lifting process; S3: After the clamping is completed, the crane slowly lifts the steel coil (4). During the lifting process, the lifting device guard plate (2) continues to play a protective role, ensuring that the steel coil (4) is lifted to the designated position smoothly and safely; S4: After reaching the destination, the crane slowly descends until the steel coil (4) is stably placed at the target position, and then the crane clamp (1) is released to complete the entire lifting process. Through the above operation, the loss of the steel coil during the lifting process can be effectively reduced.

2. The method for using the protective plate of the crane clamp for preventing the steel coil from being damaged according to claim 1 is characterized by: The hoist guard plate (2) is specifically thickened by 25 mm at the bottom. During the hoisting process of the steel coil (4), there is at least a single-side gap of 25 mm between the outer ring side of the steel coil (4) and the clamp guard plate (2), which effectively prevents the outer ring of the steel coil from overflowing and being scratched and damaged.

3. The method for using the protective plate of the crane clamp for preventing the steel coil from being damaged according to claim 2 is characterized in that: The area 100 mm below the thickened area of ​​the hanger guard plate (2) is thinned and cut into a plane chamfer; The area 50 mm above the thickened area of ​​the hoisting device guard plate (2) is thinned and chamfered into a plane, and its function is to effectively reduce the damage to the steel coil caused by the thickened step during the hoisting or lowering of the steel coil.

4. The method for using the protective plate of the crane clamp for preventing the steel coil from being damaged according to claim 1 is characterized in that: The material selection of the hanger guard plate (2) adopts a high temperature resistant and corrosion resistant alloy material, and its surface is treated with wear resistance, which can be sandblasted, plated or coated with wear-resistant materials to resist wear and scratches on the surface of the steel coil (4), thereby extending the replacement cycle of the guard plate.

5. The method for using the protective plate of the crane clamp for preventing the steel coil from being damaged according to claim 1 is characterized in that: The hanger guard plate (2) can be designed to be adjustable, and can be quickly adjusted by adding a mechanical device to adapt to steel coils (4) of different sizes and weights, thereby avoiding damage to the surface of the steel coil (4).

6. The method for using the protective plate of the crane clamp for preventing the steel coil from being damaged according to claim 1 is characterized by: The installation method of the sling guard plate (2) can adopt a modular design, which makes replacement and maintenance faster. The modular design allows for quick removal and replacement of damaged guard plate parts without replacing the entire guard plate.

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