Square billet hoisting method

Abstract

The embodiment of the invention provides a square billet hoisting method, which comprises the following steps of: before hoisting, transversely placing two square timbers on the upper side surfaces of the head part and the tail part of a square billet layer respectively, and aligning the two ends of the square timbers in the length direction to the inner side surfaces of two square billets on the outermost edges in the square billet layer respectively, the situation that the square billets in the square billet layer are stacked due to the fact that the two square billets on the outermost edge are turned inwards in the lifting period of the square billet layer is avoided; and the two rigging bodies penetrate through the lower portions of the head portion and the tail portion of the square billet layer in the transverse direction correspondingly, and the two rigging bodies are hooked to hooks of a crane.

Description

Technical Field

[0001] The present invention relates to the field of steel production, transportation and hoisting, and particularly to a method for hoisting square billets. Background Art

[0002] In the steel production, warehousing and logistics processes, the hoisting of square billets (a common form of steel billets) is one of the core processes, and its safety, efficiency and cost are directly related to the production benefits of enterprises. Currently, the common hoisting methods mainly include electromagnetic hoisting, clamp hoisting, vacuum sucker hoisting, etc. Electromagnetic hoisting uses the strong magnetic field generated by an electromagnetic sucker to adsorb the surface of the square billet to complete the hoisting. It is only applicable to ferromagnetic materials, has a limited application range, and there is a safety risk of falling when the power is cut off. Vacuum sucker hoisting uses a vacuum pump to generate negative pressure and adsorbs the surface of the square billet through a sucker to complete the hoisting. It is only suitable for light square billets with a smooth surface and has a limited application range. Clamp hoisting has no requirements for materials and no risk of falling when the power is cut off, but it has a high cost and high requirements for operators. There is a lack of suitable clamp equipment in places such as docks where non-professional square billet hoisting is carried out.

[0003] In the process of implementing the present invention, the applicant found that there are at least the following problems in the prior art:

[0004] The traditional square billet hoisting technology has problems such as the risk of falling when the power is cut off, high requirements for the surface finish of the square billet, high cost of hoisting equipment, and high operation requirements. Summary of the Invention

[0005] An embodiment of the present invention provides a method for hoisting square billets to at least solve the problems of the traditional square billet hoisting technology, such as the risk of falling when the power is cut off, high requirements for the surface finish of the square billet, high cost of hoisting equipment, and high operation requirements.

[0006] To achieve the above object, on the one hand, an embodiment of the present invention provides a method for hoisting square billets, including:

[0007] Before hoisting, place two wooden beams horizontally on the upper sides of the head and tail of the square billet layer respectively, and the two ends of the length direction of the wooden beam are respectively aligned with the inner sides of the two outermost square billets in the square billet layer to prevent the two outermost square billets from turning inwards during the hoisting of the square billet layer, resulting in the stacking of square billets in the square billet layer;

[0008] Pass two slings horizontally through the lower parts of the head and tail of the square billet layer respectively, and hook the two slings on the hooks of the crane.

[0009] Further, hooks are provided at both ends of the wooden beam;

[0010] Before hoisting, after passing two slings horizontally through the lower parts of the head and tail of the square billet layer respectively, pass the two slings through the hooks at both ends of the two wooden beams respectively.

[0011] Furthermore, hooks are provided at both ends of the square timber.

[0012] After the crane lifts the billet layer and positions it in place, two slings are taken out from below the billet layer and respectively passed through the hooks at both ends of the two square timbers, and then the two square timbers are lifted out for reuse.

[0013] Furthermore, the method includes: preliminarily stacking the billets in a well shape or a linear shape into multiple billet layers, and when the multiple billet layers are stacked in a linear shape, the billet layers are separated by strip-shaped spacers.

[0014] Furthermore, it includes: the two slings below the billet layer are respectively located within the vertical projection ranges of the two square timbers.

[0015] Furthermore, the two slings are respectively arranged at positions offset by one-sixth of the billet length from both ends of the billet inward; the billet is the billet arranged in the billet layer.

[0016] Furthermore, the height of the square timber is greater than or equal to 0.5 times the height of the billet. Preferably, the height of the square timber is 0.5 to 1 times the height of the billet.

[0017] Furthermore, the cross-section of the billet in the billet layer is 150mm * 150mm, the length is 12000mm, and 8 billets are placed side by side in each billet layer; the strip-shaped spacer is 10 to 20 cm high, and the strip-shaped spacer is arranged at positions offset by 1000 to 2000 mm from both ends of the billet inward; the width * height * length of the square timber is 150mm * 150mm * 900mm.

[0018] Furthermore, the height of the strip-shaped spacer is 15 cm, and the strip-shaped spacer is arranged at a position offset by 1500 mm from both ends of the billet inward.

[0019] Furthermore, the sling includes a steel wire rope or a chain.

[0020] Furthermore, the billets are stacked in a well shape in an open area or stacked linearly upward during vehicle transportation, and each billet layer is separated by a strip-shaped spacer with a height of 10 to 20 cm at positions 1000 to 2000 mm away from the ends at the head and tail;

[0021] At positions 1000 to 2000 mm away from the ends at the head and tail of each billet layer, a steel wire rope or a chain is horizontally passed through the bottom of each billet layer, and both ends of the steel wire rope or the chain are fixed to the hooks of the crane;

[0022] Before lifting, a square timber is placed above the billet where the force is applied, so that the square timber just abuts against the two outermost billets of the billet layer; hooks are provided on the square timber.

[0023] After hoisting in place, remove the wire rope or chain, pass it through the hook on the square timber, and hoist out the square timber for repeated use.

[0024] The above technical solution has the following beneficial effects: By adding square timbers on both sides of the billet layer on the crane hoisting system based on rigging to support the billets at the edges, it is possible to prevent the billets from stacking on each other after the billet layer is hoisted, and achieve hoisting in place in the original state of the billet layer. Without adding high-cost equipment and having no special requirements for the site and hoisting equipment, efficient hoisting can be achieved, and the hoisting cost can be reduced. The billet hoisting method of the present invention has a wide range of applications, does not require adding high-cost equipment, has high safety and hoisting efficiency, and reduces the hoisting cost. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a flowchart of a billet hoisting method according to one of the embodiments of the present invention;

[0027] Figure 2 It is a schematic diagram of the hoisting connection relationship of a billet hoisting method according to one of the embodiments of the present invention;

[0028] The reference numerals are represented as: 1, rigging; 2, square timber; 3, billet layer. Detailed Embodiments

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0030] On the one hand, as Figure 1 shown, an embodiment of the present invention provides a billet hoisting method, including:

[0031] Step S10, before hoisting, place two square timbers horizontally on the upper sides of the head and tail of the billet layer respectively, and the two ends of the length direction of the square timber are respectively aligned with the inner sides of the two outermost billets in the billet layer to prevent the two outermost billets from turning inward during the hoisting of the billet layer, resulting in the stacking of the billets in the billet layer;

[0032] Step S11, pass two slings horizontally under the head and tail of the billet layer respectively, and hook the two slings on the hooks of the crane.

[0033] In some embodiments, as Figure 2 shown, the square timber 2 is arranged on the upper side of the billet layer 3, and the sling 1 passes through from the lower side of the billet layer. When the crane lifts the sling 1, without the square timber 2, the billets in the billet layer are prone to turn inward and stack starting from the billets at both side edges. When the square timber 2 is provided, the billets at both side edges of the billet layer will be blocked by the two ends of the square timber 2 and cannot turn inward, so as to maintain the layered structure of the billet layer during hoisting. The head (front end) and tail of the billet layer are the head (front end) and tail of the billets in the billet layer. After completing the preparatory work before hoisting, the crane lifts the billet layer and hoists it in place.

[0034] The embodiments of the present invention have the following technical effects: By adding square timbers on the crane hoisting system based on slings to block the billets at both side edges of the billet layer, it is avoided that the billets stack on each other after the billet layer is lifted, and the billet layer is hoisted in place in its original state. High-efficiency hoisting is achieved without adding high-cost equipment and without special requirements for the site and hoisting equipment, and the hoisting cost is reduced.

[0035] Further, hooks are provided at both ends of the square timber;

[0036] Before hoisting, after passing the two slings horizontally under the head and tail of the billet layer respectively, pass the two slings through the hooks at both ends of the two square timbers respectively.

[0037] In some embodiments, after the sling at the head of the billet layer passes through from under the billet layer, it continues to pass upward through the hooks at both ends of the square timber at the head, and then is hooked on the hook of the crane; after the sling at the tail of the billet layer passes through from under the billet layer, it continues to pass upward through the hooks at both ends of the square timber at the tail, and then is hooked on the hook of the crane; since the sling gradually narrows in a triangular shape from one side of the billet layer to one side of the crane hook, and the two ends of the square timber are limited by the sling, the square timber can be more stably pressed above the billet layer, and cannot move longitudinally along the billet or be skewed. It can not only firmly block the two billets at both side edges of the billet layer, but also exert a downward pressure on the billets under the square timber to interact with the upward pressure exerted by the sling under the billet layer. Utilizing the non-deformability of the square timber, the layered structure of the billet layer is stably maintained. Further improves the safety during the hoisting process.

[0038] Further, hooks are provided at both ends of the square timber;

[0039] After the crane lifts the billet layer and hoists it in place, take out the two slings from under the billet layer, and pass them through the hooks at both ends of the two square timbers respectively, and lift out the two square timbers for reuse.

[0040] By setting hooks at the ends of the square timber, it is convenient to use a crane to remove the square timber after it is hoisted into place, and continue to use it for hoisting the next layer of square billets. There is no need for workers to manually carry the square timber, which reduces physical exertion and improves work efficiency.

[0041] Furthermore, the method comprises: stacking the square billets in a tic-tac-toe shape or a straight shape to form multiple square billet layers in advance, and when the multiple square billet layers are stacked in a straight shape, the square billet layers are separated by strip spacers.

[0042] In some embodiments, when stacking in a tic-tac-toe pattern, both ends of each layer of billet are suspended, which can be easily inserted into the rigging. When stacking in a straight line, it is necessary to place strip spacers horizontally at the head and tail of the billet layer to separate the upper and lower billet layers, so as to facilitate the insertion of the rigging. The strip spacers can be made of wood material that is not easily deformed.

[0043] Furthermore, it includes: two riggings below the square billet layer are respectively located within the vertical projection range of the two square timbers.

[0044] Aligning the rigging and the timbers vertically allows the force applied by the rigging to the billet layer to directly correspond to the force applied by the timbers to the billets on both sides of the edge of the billet layer, without any torsion force on the billets on both sides of the edge.

[0045] Furthermore, it comprises: two riggings are respectively arranged at positions offset inward from two ends of the square billet by one sixth of the length of the square billet; and the square billet is the square billet arranged in the square billet layer.

[0046] The two riggings are respectively arranged at a position offset inward from both ends of the billet by one sixth of the billet length, so as to adapt to billets of different lengths and avoid the billet layers from being unstable and sliding off after lifting due to the rigging force points being too close.

[0047] Furthermore, the height of the square timber is greater than or equal to 0.5 times the height of the square billet. Preferably, the height of the square timber is 0.5 to 1 times the height of the square billet.

[0048] If the height of the square timber is too high, it will be too heavy and not conducive to reciprocating movement; if the height of the square timber is too low, it will be impossible to prevent the square billet from turning inward.

[0049] Furthermore, the cross-section of the square billets in the square billet layer is 150mm*150mm, the length is 12000mm, and 8 square billets are placed side by side in each square billet layer; the strip spacers are 10 to 20 centimeters high, and the strip spacers are arranged at a position 1000 to 2000 millimeters inwardly offset from both ends of the square billets; the width*height*length of the square wood is 150mm*150mm*900mm.

[0050] Further, the height of the strip-shaped spacer is 15 cm, and the strip-shaped spacer is arranged at a position 1500 mm offset inward from both ends of the billet.

[0051] Further, the rigging includes a wire rope or a chain.

[0052] Further, the method includes:

[0053] The billets are stacked in a well shape in an open area or stacked in a line shape during vehicle transportation, and each layer of billets is separated by strip-shaped spacers with a height of 10 to 20 cm at positions 1000 to 2000 mm from the ends at the head and tail.

[0054] At positions 1000 to 2000 mm from the ends at the head and tail of each layer of billets, a wire rope or a chain is horizontally passed through the bottom of each layer of billets, and both ends of the wire rope or the chain are fixed to the hooks of the crane.

[0055] Before lifting, a square wooden block is placed above the billet where the force is applied, so that the square wooden block just abuts against the two outermost billets of the billet layer; a hook is provided on the square wooden block.

[0056] After the lifting is in place, the wire rope or the chain is removed, passed through the hook on the square wooden block, and the square wooden block is lifted out for repeated use.

[0057] The above technical solutions of the embodiments of the present invention will be described in detail below in conjunction with specific application examples. For technical details not introduced during the implementation process, reference can be made to the relevant descriptions above.

[0058] The embodiment of the present invention provides a method for lifting billets, which is also a method for improving the lifting efficiency of billets, improving the lifting efficiency and safety, and reducing the production cost.

[0059] The method for lifting billets specifically includes:

[0060] 1. The billets are stacked in a well shape in open areas such as warehouses and docks without using hard materials for separation; during transportation by vehicles such as cars and trains, they are stacked in a line shape, and each layer of billets is separated by materials that are not easily deformed with a height of 10 to 20 cm at positions 1000 to 2000 mm from the ends at the head and tail.

[0061] 2. At the positions where materials are padded at the head and tail of each plate of billets, a wire rope or a chain is horizontally passed through the bottom of each plate of billets, and both ends of the wire rope or the chain are fixed to the hooks of the crane.

[0062] 3. As Figure 2 shown, before lifting, a square wooden block or a billet (tied with a hook) is placed above the billet where the force is applied, so that it just abuts against the two outermost billets. The length of the square wooden block is (N - 2) * the cross-sectional side length of the billet, where N is the number of billets lifted this time.

[0063] 4. After hoisting in place, remove the steel wire rope or chain, pass it through the hook of the square timber or billet, and hoist out the square timber or billet for repeated use.

[0064] Preferably, the cross-section of the billet is 150mm * 150mm (millimeters), the fixed length is 12,000mm, and there are 8 pieces per plate. The billets are stacked in a well shape in open areas such as warehouses and docks without using hard materials for separation; during transportation by vehicles, trains, etc., they are stacked in a line on the net, and each layer of billets is separated by square timbers with a height of 15cm at positions about 1,500mm from the ends at the head and tail. At the positions where square timbers are padded at the head and tail of each plate of billets, a chain is passed horizontally through the bottom of each plate of billets, and the two ends of the chain are fixed to the hook of the crane. Before hoisting, place a square timber with a cross-section of width * height * length of 150mm * 150mm * 900mm and equipped with a hook above the chain so that it just touches the two outermost billets. After hoisting in place, remove the chain, pass it through the hook of the square timber, and hoist out the square timber for repeated use.

[0065] The principle of the embodiment of the present invention is as follows: The billets are stacked in a well shape in open areas such as warehouses and docks without using hard materials for separation; during transportation by vehicles, trains, etc., they are stacked in a line on the net, and each layer of billets is separated by materials that are not easily deformed with a height of 10 - 20cm at positions 1,000 - 2,000mm from the ends at the head and tail. This makes it very convenient to pass the steel wire rope or chain through the bottom of the billets. At the positions where materials are padded at the head and tail of each plate of billets, a steel wire rope or chain is passed horizontally through the bottom of each plate of billets, and the two ends of the steel wire rope or chain are fixed to the hook of the crane, facilitating the hoisting of the billets. Before hoisting, place a square timber or billet (equipped with a hook) above the position where the billets are stressed so that it just touches the two outermost billets to prevent them from flipping and stacking. Once stacked, subsequent manual handling is required, which affects the hoisting efficiency. After hoisting in place, remove the steel wire rope or chain, pass it through the hook of the square timber or billet, and hoist out the square timber or billet for repeated use. The entire process does not require adding high-cost equipment, has no special requirements for the site and hoisting equipment, is widely applicable, and has a relatively high hoisting efficiency.

[0066] The embodiment of the present invention has the following technical effects: It is possible not to add high-cost equipment, has no special requirements for the site and hoisting equipment, is widely applicable, has a relatively high hoisting efficiency, and reduces the hoisting cost.

[0067] It should be understood that the specific order or hierarchy of steps in the disclosed process is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process can be rearranged without departing from the scope of the present disclosure. The appended method claims present the elements of various steps in an exemplary order and are not intended to be limited to the specific order or hierarchy described.

[0068] In the foregoing detailed description, various features are combined in a single embodiment to simplify the present disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than those clearly recited in each claim. On the contrary, as reflected in the appended claims, the invention lies in less than the full scope of features of the single disclosed embodiment. Accordingly, the appended claims are hereby expressly incorporated into the detailed description, where each claim stands on its own as a separate preferred embodiment of the invention.

[0069] The above-described disclosed embodiments are described to enable any person skilled in the art to make or use the present invention. For those skilled in the art, various modifications to these embodiments are obvious, and the general principles defined herein can be applied to other embodiments without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments given herein, but is consistent with the broadest scope of the principles and novel features disclosed in this application.

[0070] The foregoing description includes examples of one or more embodiments. Of course, it is not possible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but those of ordinary skill in the art should recognize that the various embodiments can be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the word is construed in a manner similar to the term "including". Further, any use of the term "or" in the specification or claims of a patent is to mean "non-exclusive or".

[0071] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above description is only the specific embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for hoisting a square billet, characterized in that, include: Before lifting, two square timbers are placed transversely on the upper sides of the head and tail of the billet layer, and the two ends of the square timbers in the length direction are aligned with the inner sides of the two outermost billets in the billet layer, so as to prevent the two outermost billets from turning inwards during the lifting of the billet layer, resulting in the billets in the billet layer being stacked; Pass the two riggings through the head and tail of the billet layer laterally respectively, and hook the two riggings on the hook of the crane.

2. The method for lifting a square billet according to claim 1, characterized in that, Hooks are provided at both ends of the square wood; Before lifting, pass the two riggings horizontally through the head and tail of the square billet layer, and then pass the two riggings through the hooks at both ends of the two square timbers.

3. The billet lifting method according to claim 1, characterized in that, Hooks are provided at both ends of the square wood; After the crane lifts the billet layer and hoists it in place, two riggings are taken out from under the billet layer and passed through hooks at both ends of two square timbers respectively, and the two square timbers are hoisted out for reuse.

4. The method for lifting a square billet according to claim 1, wherein include: The square billets are stacked in advance in a tic-tac-toe shape or a straight line shape to form a multi-layer square billet layer. When the multi-layer square billet layers are stacked in a straight line shape, the square billet layers are separated by strip-shaped spacers.

5. The billet hoisting method according to claim 1, characterized in that include: The two riggings below the square billet layer are respectively located within the vertical projection range of the two square timbers.

6. The method for lifting a square billet according to claim 1, characterized in that, include: The two riggings are respectively arranged at positions offset inward from both ends of the billet by one sixth of the length of the billet; the billets are the billets arranged in the billet layer.

7. The method for hoisting a square billet according to claim 1, wherein, The height of the square timber is greater than or equal to 0.5 times the height of the square billet.

8. The method for lifting a square billet according to claim 3, wherein The cross-section of the square billets in the square billet layer is 150mm*150mm, and the length is 12000mm. Eight square billets are placed side by side in each square billet layer. The strip spacers are 10 to 20 centimeters high and are arranged at the two ends of the square billets offset inward by 1000 to 2000 millimeters. The width*height*length of the square wood is 150mm*150mm*900mm.

9. The billet hoisting method according to claim 7, characterized in that, The height of the strip spacer is 15 cm, and the strip spacer is arranged at a position offset 1500 mm inwards at both ends of the billet.

10. The billet lifting method according to claim 1, characterized in that, The method comprises: Billets are stacked in a tic-tac-toe pattern in an open area or stacked in a straight line during transportation. Each layer of billets is separated by 10 to 20 cm high strip spacers at the head and tail, 1000 to 2000 mm from the end. Use a wire rope or chain to cross the bottom of each layer of billet at a position 1000 to 2000 mm from the head and tail of each layer of billet, and fix both ends of the wire rope or chain to the hook of the crane; Before lifting, a square wood is placed above the force-bearing part of the billet, so that the square wood just supports the two outermost billets of the billet layer; a hook is arranged on the square wood; After hoisting into place, remove the wire rope or chain, pass it through the hook on the square timber, and hoist the square timber out for reuse.

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