A protection method for steel coil cutting

Abstract

This invention provides a protective method for steel coil cutting, belonging to the field of steel inspection auxiliary methods, including the following steps: hoisting the tail of the steel coil upwards, forming a protective gap between the tail and the remaining steel coil; inserting a protective device into the protective gap, with the first direction of the protective device parallel to the width direction of the steel coil. The protective device includes a protective plate body, which has a first direction. A first telescopic cavity is provided within the protective plate body along the first direction, and a first telescopic plate is telescopically arranged within the first telescopic cavity. The first telescopic cavity has a first telescopic opening in the first direction, and the first telescopic plate moves telescopically within the first telescopic cavity through the first telescopic opening. This invention can block the gap between the tail of the steel coil and the remaining steel coil, effectively preventing oxide slag generated during steel coil cutting and sampling from falling into the interior of the steel coil, avoiding scratches on the surface of the steel coil by oxide slag, or leaving pits on the surface of the steel coil due to being pressed in, thus reducing the risk to steel coil quality.

Description

Technical Field

[0001] The invention belongs to the technical field of steel material detection assistance, and in particular relates to a protection method for steel coil cutting. Background Art

[0002] On the hot coil production line of the steel rolling mill, the sampling of the steel coils is usually divided into online sampling and offline sampling. For offline sampling, the crane lifts the steel coil to the offline sampling saddle, and the operator flame cuts a hole at the tail of the steel coil, then hooks the hook on the cut hole, and the tail of the steel coil is lifted open by the crane and other lifting equipment. After the tail of the steel coil is lifted open, the operator cuts a sample of 2 to 3 meters in length from the tail steel coil for sample inspection, and the cutting width is about 1 to 1.5 meters. During the cutting and sampling process, the steel coil will produce a large amount of slag, which is easily dropped into the steel coil due to gravity. During the later processing of the steel coil, the slag can easily scratch the surface of the steel coil, or even be pressed into the surface of the steel coil, leaving pits on the surface of the steel coil, seriously affecting the quality of the steel coil and increasing quality risks. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a protection method for steel coil cutting, which is used to solve the problem that the oxide slag generated during the steel coil cutting and sampling process in the prior art easily falls into the interior of the steel coil, affecting the quality of the steel coil.

[0004] To achieve the above-mentioned object and other related objects, the present invention provides a protection method for steel coil cutting, and provides a protection device, wherein the protection device comprises a protection plate body, the protection plate body has a first direction, a first telescopic cavity is arranged in the protection plate body along the first direction, a first telescopic plate is telescopically arranged in the first telescopic cavity, the first telescopic cavity has a first telescopic opening in the first direction, and the first telescopic plate telescopically moves in the first telescopic cavity through the first telescopic opening;

[0005] The following steps are involved:

[0006] Lift the tail of the steel coil upwards to form a gap to be protected between the tail of the steel coil and the remaining steel coils;

[0007] The protective device is inserted into the gap to be protected, and the first direction of the protective device is parallel to the width direction of the steel coil.

[0008] Optionally, there are two first telescopic plates and two first telescopic cavities, respectively, the two first telescopic plates are respectively arranged in the two first telescopic cavities, the two first telescopic cavities are respectively arranged at two ends of the protective plate body opposite to each other, and the two first telescopic openings are arranged back to back.

[0009] Optionally, a first extension spring is provided between the first telescopic plate and the bottom of the first telescopic cavity, and the first extension spring acts on the first telescopic plate and drives the first telescopic plate to extend out of the first telescopic cavity.

[0010] Optionally, a spring hook is provided in the protective plate body, and a first limiting groove matching the spring hook is provided on the first telescopic plate. When the spring hook is engaged with the first limiting groove, the spring hook constrains the first telescopic plate in the first direction. When the spring hook is separated from the first limiting groove, the first telescopic plate extends out of the first telescopic cavity under the action of the first extending spring.

[0011] Optionally, the spring hook includes a hook body and a return spring, the return spring is arranged along the engagement direction of the spring hook and the first limiting groove, the return spring presses the hook body in the first limiting groove, and a pressing push rod is arranged on the spring hook along the separation direction of the spring hook and the first limiting groove, the pressing push rod is used to compress the return spring and separate the spring hook from the first limiting groove.

[0012] Optionally, a second telescopic cavity is arranged in the first telescopic plate along the first direction, a second telescopic plate is arranged in the second telescopic cavity, a second telescopic opening is opened in the second telescopic cavity, the direction of the second telescopic opening is the same as that of the first telescopic opening, and the second telescopic plate telescopically moves in the second telescopic cavity through the second telescopic opening.

[0013] Optionally, a second extension spring is provided between the second telescopic plate and the bottom of the second telescopic cavity, and the second extension spring acts on the second telescopic plate and drives the second telescopic plate to extend out of the second telescopic cavity.

[0014] Optionally, a spring hook is provided in the protective plate body, a limiting through hole for the spring hook to pass through is provided on the first telescopic plate, a second limiting groove is provided on the second telescopic plate corresponding to the limiting through hole, and the spring hook engages with the second limiting groove after passing through the limiting through hole;

[0015] When the spring hook passes through the limiting through hole, the spring hook constrains the first telescopic plate in the first direction, and when the spring hook is disengaged from the limiting through hole, the first telescopic plate extends out of the first telescopic cavity under the action of the first extension spring;

[0016] When the spring hook is engaged with the second limiting groove, the spring hook constrains the second telescopic plate in the first direction, and when the spring hook is separated from the second limiting groove, the second telescopic plate extends out of the second telescopic cavity under the action of the second extension spring.

[0017] Optionally, the spring hook includes a hook body and a return spring, the return spring is arranged along the engagement direction of the spring hook and the limiting through hole, the return spring passes the hook body through the limiting through hole and engages in the second limiting groove, and a pressing push rod is arranged on the spring hook along the separation direction of the spring hook and the limiting through hole, the pressing push rod is used to compress the return spring and separate the spring hook from the second limiting groove and the limiting through hole.

[0018] Optionally, a handle for holding is provided in the middle of the protective plate body.

[0019] As described above, a protection method for steel coil cutting of the present invention has the following beneficial effects: the protection device is inserted into the gap to be protected between the tail of the steel coil and the remaining steel coils, and the protection plate body can block between the tail of the steel coil and the remaining steel coils, which can effectively prevent the oxide slag generated during the steel coil cutting and sampling process from falling into the steel coil, avoiding the oxide slag scratching the surface of the steel coil, or being pressed into the surface of the steel coil to leave pits on the surface of the steel coil, thereby reducing the quality risk of the steel coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Shown is a schematic structural diagram of a protective device in an embodiment of the present invention.

[0021] Figure 2 Shown is a schematic diagram of the placement of the protective device in an embodiment of the present invention.

[0022] Explanation of the accompanying drawings: protective plate body 1, first telescopic cavity 2, first telescopic plate 3, second telescopic cavity 4, third telescopic plate 5, first extension spring 6, second extension spring 7, return spring 8, spring hook 9, hook body 10, pressing push rod 11, pressing leg 12, handle 13, end cover 14, steel coil tail 15, remaining steel coil 16. DETAILED DESCRIPTION

[0023] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0024] See also Figure 1 to Figure 2It should be noted that the diagrams provided in the present embodiment only illustrate the basic concept of the present invention in a schematic manner, so the diagrams only show the components related to the present invention rather than drawing according to the number, shape and size of the components in actual implementation. The type, quantity and proportion of each component in actual implementation can be changed at will, and the component layout type may also be more complicated. The structure, proportion, size, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can be implemented, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effect and purpose that the present invention can produce. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0025] like Figure 1 and Figure 2 As shown, this embodiment provides a protection method for steel coil cutting, and provides a protection device, the protection device includes a protection plate body 1, the protection plate body 1 has a first direction, a first telescopic cavity 2 is arranged in the protection plate body 1 along the first direction, a first telescopic plate 3 is telescopically arranged in the first telescopic cavity 2, the first telescopic cavity 2 has a first telescopic opening in the first direction, and the first telescopic plate 3 telescopically moves in the first telescopic cavity 2 through the first telescopic opening;

[0026] The following steps are involved:

[0027] (1) The tail of the steel coil 15 is lifted upward, and a gap to be protected is formed between the tail of the steel coil 15 and the remaining steel coils 16;

[0028] (2) Insert the protective device into the gap to be protected, and the first direction of the protective device is parallel to the width direction of the steel coil.

[0029] In this embodiment, the first direction of the protective plate body 1 is the length direction of the protective plate body 1, that is, the length direction of the protective device. The length direction of the protective device is placed in the gap to be protected along the width direction of the steel coil. Since the protective plate body 1 can be blocked between the tail 15 of the steel coil and the remaining steel coil 16, it can effectively prevent the oxide slag generated during the steel coil cutting and sampling process from falling into the steel coil, and avoid the oxide slag from scratching the surface of the steel coil, or being pressed into the surface of the steel coil to leave pits on the surface of the steel coil, thereby reducing the quality risk of the steel coil. The first telescopic plate 3 can extend from the protective plate body 1 along the first direction, that is, the width direction of the steel coil, which can increase the protection range of the protective device in the width direction of the steel coil, and can be used for steel coils with a wider width.

[0030] In some embodiments, there are two first telescopic plates 3 and two first telescopic cavities 2, respectively. The two first telescopic plates 3 are respectively arranged in the two first telescopic cavities 2, and the two first telescopic cavities 2 are respectively arranged at the two ends of the protective plate body 1, and the two first telescopic openings are arranged back to back. The two first telescopic plates 3 can be extended from the two ends of the protective plate body 1, respectively, which can further increase the protection range of the protective device in the width direction of the steel coil, so as to be used for steel coils with a wider width.

[0031] In some embodiments, a first extension spring 6 is provided between the first telescopic plate 3 and the bottom of the first telescopic cavity 2, and the first extension spring 6 acts on the first telescopic plate 3 and drives the first telescopic plate 3 to extend out of the first telescopic cavity 2. The first extension spring 6 can provide power for the first telescopic plate 3, so that the first telescopic plate 3 is automatically extended, and there is no need to manually pull out the first telescopic plate 3, which is simple and convenient.

[0032] In some embodiments, a spring hook 9 is provided in the protective plate body 1, and a first limiting groove matching the spring hook 9 is provided on the first telescopic plate 3. When the spring hook 9 is engaged with the first limiting groove, the spring hook 9 constrains the first telescopic plate 3 in the first direction. When the spring hook 9 is separated from the first limiting groove, the first telescopic plate 3 is extended out of the first telescopic cavity 2 under the action of the first extension spring 6. The spring hook 9 can constrain the first telescopic plate 3, so that the first telescopic plate 3 remains in a retracted state when not in use, thereby reducing the size of the protective device and facilitating the storage of the protective device.

[0033] In some embodiments, the spring hook 9 includes a hook body 10 and a reset spring 8, the reset spring 8 is arranged along the meshing direction of the spring hook 9 and the first limiting groove, the reset spring 8 presses the hook body 10 in the first limiting groove, and a pressing push rod 11 is arranged on the spring hook 9 along the separation direction of the spring hook 9 and the first limiting groove, the pressing push rod 11 is used to compress the reset spring 8 and separate the spring hook 9 from the first limiting groove. The reset spring 8 acts on the hook body 10, so that the hook body 10 can reliably limit the first telescopic plate 3, and the pressing push rod 11 can compress the reset spring 8. When the first telescopic plate 3 needs to be extended, the hook body 10 can be separated from the first telescopic plate 3 by pressing the push rod 11, which is simple and convenient.

[0034] In this embodiment, a second telescopic cavity 4 is provided in the first telescopic plate 3 along the first direction, a second telescopic plate is provided in the second telescopic cavity 4, a second telescopic opening is provided in the second telescopic cavity 4, the second telescopic opening is oriented in the same direction as the first telescopic opening, and the second telescopic plate telescopically moves in the second telescopic cavity 4 through the second telescopic opening. The second telescopic plates can extend from the first telescopic plates 3, respectively, and the protection range of the protective device in the width direction of the steel coil can be further increased, so as to be used for steel coils with a larger width.

[0035] Specifically, a second extension spring 7 is provided between the second telescopic plate and the bottom of the second telescopic cavity 4, and the second extension spring 7 acts on the second telescopic plate and drives the second telescopic plate to extend out of the second telescopic cavity 4. The second extension spring 7 can provide power for the second telescopic plate, so that the second telescopic plate is automatically extended, and there is no need to manually pull out the second telescopic plate, which is simple and convenient.

[0036] A spring hook 9 is provided in the protective plate body 1, a limiting through hole for the spring hook 9 to pass through is provided on the first telescopic plate 3, and a second limiting groove is provided on the second telescopic plate corresponding to the limiting through hole. The spring hook 9 is engaged with the second limiting groove after passing through the limiting through hole. When the spring hook 9 passes through the limiting through hole, the spring hook 9 constrains the first telescopic plate 3 in the first direction. When the spring hook 9 is separated from the limiting through hole, the first telescopic plate 3 is extended out of the first telescopic cavity 2 under the action of the first extension spring 6. When the spring hook 9 is engaged with the second limiting groove, the spring hook 9 constrains the second telescopic plate in the first direction. When the spring hook 9 is separated from the second limiting groove, the second telescopic plate is extended out of the second telescopic cavity 4 under the action of the second extension spring 7. The spring hook 9 can constrain the first telescopic plate 3 and the second telescopic plate, so that the first telescopic plate 3 and the second telescopic plate remain in a retracted state when not in use, reduce the size of the protective device, and facilitate the storage of the protective device.

[0037] Specifically, in this embodiment, the spring hook 9 includes a hook body 10 and a reset spring 8, the reset spring 8 is arranged along the meshing direction of the spring hook 9 and the limiting through hole, the reset spring 8 passes the hook body 10 through the limiting through hole and meshes in the second limiting groove, and a pressing push rod 11 is arranged on the spring hook 9 along the separation direction of the spring hook 9 and the limiting through hole, the pressing push rod 11 is used to compress the reset spring 8 and separate the spring hook 9 from the second limiting groove and the limiting through hole. The reset spring 8 acts on the hook body 10, so that the hook body 10 can reliably limit the first telescopic plate 3 and the second telescopic plate, and the pressing push rod 11 can compress the reset spring 8. When the first telescopic plate 3 and the second telescopic plate need to be extended, the hook body 10 can be separated from the first telescopic plate 3 and the second telescopic plate by pressing the push rod 11, which is simple and convenient.

[0038] In this embodiment, a handle 13 for holding is provided in the middle of the guard plate body 1, which is convenient for the operator to hold. In this embodiment, a pressing push rod 11 is provided in the handle 13, and a pressing leg 12 is provided on the pressing push rod 11, and the pressing leg 12 extends from the side of the handle 13, which is convenient for pressing and prevents the pressing push rod 11 from interfering with the steel coil tail 15 and causing the hook body 10 to fall off by mistake.

[0039] The protective plate body 1 is made of steel plate, and an arc-shaped end cover 14 is provided on the end where the second telescopic plate extends. The edges around the protective plate body 1 are also arc-shaped to avoid puncture of the steel coil during the placement of the protective device. The length, width and height of the protective plate body 1 are 700mm, 50mm and 30mm respectively. The first telescopic plate 3 and the second telescopic plate are made of aluminum alloy, which can effectively reduce the weight of the protective device. The length of the first telescopic plate 3 and the second telescopic plate are both 250mm, the thickness of the first telescopic plate 3 is 30mm, and the thickness of the second telescopic plate is 20mm. When the steel coil is cut, the collection device can be taken out when the hook lifts the cut steel plate.

[0040] In summary, the steel coil cutting protection method provided in this embodiment can block between the steel coil tail 15 and the remaining steel coil 16, and can effectively prevent the oxide slag generated during the steel coil cutting and sampling process from falling into the steel coil, and prevent the oxide slag from scratching the surface of the steel coil, or being pressed into the surface of the steel coil to leave pits on the surface of the steel coil, thereby reducing the quality risk of the steel coil. The first telescopic plate 3 can extend from the protective plate body 1 along the first direction, that is, the width direction of the steel coil, which can increase the protection range of the protective device in the width direction of the steel coil, and can be used for steel coils with a larger width.

[0041] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A method for protecting steel coil cutting, characterized in that: A protective device is provided, the protective device comprising a protective plate body, the protective plate body having a first direction, a first telescopic cavity being arranged in the protective plate body along the first direction, a first telescopic plate being telescopically arranged in the first telescopic cavity, the first telescopic cavity having a first telescopic opening in the first direction, and the first telescopic plate telescopically moving in the first telescopic cavity through the first telescopic opening; The following steps are involved: Lift the tail of the steel coil upwards to form a gap to be protected between the tail of the steel coil and the remaining steel coils; The protective device is inserted into the gap to be protected, and the first direction of the protective device is parallel to the width direction of the steel coil.

2. The method for protecting against steel coil cutting according to claim 1, characterized in that: There are two first telescopic plates and two first telescopic cavities, respectively. The two first telescopic plates are respectively arranged in the two first telescopic cavities, and the two first telescopic cavities are respectively arranged at two ends of the protective plate body opposite to each other, and the two first telescopic openings are arranged back to back.

3. The method for protecting against steel coil cutting according to claim 2, characterized in that: A first extension spring is arranged between the first extension plate and the bottom of the first extension cavity. The first extension spring acts on the first extension plate and drives the first extension plate to extend out of the first extension cavity.

4. The method for protecting against steel coil cutting according to claim 3, characterized in that: A spring hook is provided in the protective plate body, and a first limiting groove matching the spring hook is provided on the first telescopic plate. When the spring hook is engaged with the first limiting groove, the spring hook constrains the first telescopic plate in the first direction. When the spring hook is separated from the first limiting groove, the first telescopic plate extends out of the first telescopic cavity under the action of the first extension spring.

5. The method for protecting against steel coil cutting according to claim 4, characterized in that: The spring hook includes a hook body and a return spring, wherein the return spring is arranged along the meshing direction of the spring hook and the first limiting groove, and the return spring presses the hook body into the first limiting groove. A pressing push rod is arranged on the spring hook along the separation direction of the spring hook and the first limiting groove, and the pressing push rod is used to compress the return spring and separate the spring hook from the first limiting groove.

6. The method for protecting against steel coil cutting according to claim 3, characterized in that: A second telescopic cavity is arranged in the first telescopic plate along the first direction, a second telescopic plate is arranged in the second telescopic cavity, a second telescopic opening is opened in the second telescopic cavity, the direction of the second telescopic opening is the same as that of the first telescopic opening, and the second telescopic plate telescopically moves in the second telescopic cavity through the second telescopic opening.

7. The method for protecting against steel coil cutting according to claim 6, characterized in that: A second extension spring is arranged between the second telescopic plate and the bottom of the second telescopic cavity. The second extension spring acts on the second telescopic plate and drives the second telescopic plate to extend out of the second telescopic cavity.

8. The method for protecting against steel coil cutting according to claim 7, characterized in that: A spring hook is arranged in the protective plate body, a limiting through hole for the spring hook to pass through is arranged on the first telescopic plate, a second limiting groove is arranged on the second telescopic plate corresponding to the limiting through hole, and the spring hook is engaged with the second limiting groove after passing through the limiting through hole; When the spring hook passes through the limiting through hole, the spring hook constrains the first telescopic plate in the first direction, and when the spring hook is disengaged from the limiting through hole, the first telescopic plate extends out of the first telescopic cavity under the action of the first extension spring; When the spring hook is engaged with the second limiting groove, the spring hook constrains the second telescopic plate in the first direction, and when the spring hook is separated from the second limiting groove, the second telescopic plate extends out of the second telescopic cavity under the action of the second extension spring.

9. The method for protecting against steel coil cutting according to claim 8, characterized in that: The spring hook includes a hook body and a return spring, the return spring is arranged along the engagement direction of the spring hook and the limiting through hole, the return spring passes the hook body through the limiting through hole and engages in the second limiting groove, and a pressing push rod is arranged on the spring hook along the separation direction of the spring hook and the limiting through hole, the pressing push rod is used to compress the return spring and separate the spring hook from the second limiting groove and the limiting through hole.

10. The method for protecting against steel coil cutting according to claim 1, characterized in that: A handle for holding is arranged in the middle of the protective plate body.

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