In-situ heightening transformation method for crane beam of large industrial factory building

Abstract

The invention relates to the technical field of crane transformation, in particular to a large industrial factory building crane beam in-situ heightening transformation method which comprises the steps that firstly, a bracket support is manufactured; secondly, supporting bracket supports are additionally arranged on the two side edges of a shoulder beam for supporting the ends of the original crane beam correspondingly; the top of the supporting bracket bracket is tightly connected with the top of the lower flange of the original crane beam, and one end is firmly welded with the side surface of the original shoulder beam; thirdly, rails on the original crane beams and the original crane beams and base plates on the upper portions of the shoulder beams are cut and dismantled; a track laid on an original crane beam is dismantled; cutting and dismantling the end part of the crane beam above the original shoulder beam part at the position of a support bracket bracket; removing the original base plate between the crane beam and the shoulder beam; 4, designing and installing a shoulder beam column of the heightened crane beam; and fifthly, the rail, the base plate and other accessories are re-installed. And the actual effect of general popularization and application is achieved only by increasing and changing the running height of the crane without dismantling the original workshop and the crane beam system but newly building the crane.

Description

Technical Field

[0001] The present invention relates to the technical field of crane transformation, and specifically refers to a method for increasing the height of a crane beam in place in a large industrial plant building. Background Art

[0002] In order to solve problems such as land shortage, environmental protection, backward production capacity and technology in existing steel plants, it is necessary to transform the existing workshop production line.

[0003] Utilize the original production unit production line address and workshop (such as Figure 1 ), to transform and build a new type of production line. Since the required crane operating heights in the workshop are different, and there are impacts on adjacent production lines and adjacent workshop buildings during the transformation of the workshop building, when the height of the original workshop building meets the requirements for the crane operation of the new production line, as much as possible, do not demolish the original workshop building and the supporting crane beam system and build them all anew.

[0004] Considering the advantages and disadvantages, production impacts and transformation costs comprehensively, consider increasing the height of the crane beam system in place in the original workshop building. It is necessary to meet the requirements for the crane height in the new production line workshop, ensure the normal operation of the original facilities in the adjacent area and the economy of the transformation, and save costs as much as possible. Especially for the situation of transforming a certain span in the original continuous multi-span workshop building, the demolition and transformation of this span cannot affect the surrounding production lines.

[0005] During the transformation process, a method for increasing the height of a crane beam in place in a large industrial plant building is proposed. Summary of the Invention

[0006] (I) Technical Problem

[0007] The present invention aims to solve at least the problem of insufficient height of the original crane beam in the existing technology.

[0008] (II) Technical Content

[0009] This solution provides a method for increasing the height of a crane beam in place in a large industrial plant building, including the following steps:

[0010] Step 1, fabricate a support bracket with a corbel;

[0011] Step 2, add support brackets with corbels on both sides of the shoulder beams at both ends of the original crane beam;

[0012] Among them, the top of the support is fixedly connected to the shoulder beam, and the bottom is firmly welded to the side of the original shoulder column; among them, the top of the support bracket with a corbel is fixedly connected to the top of the lower flange of the original crane beam, and one end is firmly welded to the side of the original shoulder beam;

[0013] Step 3, cut and remove the track on the original crane beam and the original crane beam and backing plate on the upper part of the shoulder column;

[0014] Wherein:

[0015] First, remove the track laid on the original crane beam.

[0016] Secondly, at the support position, cut and remove the part between the original shoulder column and the shoulder beam; secondly, at the support bracket position of the corbel, cut and remove the end of the crane beam above the original shoulder beam part.

[0017] Then, remove the backing plate between the original crane beam and the shoulder beam to expose the main structure of the shoulder beam.

[0018] Step 4, design and install the shoulder column of the crane beam after heightening, and fixedly connect the shoulder column of the heightened part with the original shoulder column.

[0019] Step 5, reinstall the track.

[0020] Preferred Technical Solution 1: The support is mainly composed of H-shaped steel, with thickened rib plates welded on the side of the H-shaped steel, and another group of H-shaped steel is horizontally welded in the middle and lower parts of the main body to form the support.

[0021] Preferred Technical Solution 1: The support bracket of the corbel is mainly composed of H-shaped steel, with stiffening plates welded on the side of the H-shaped steel, and another group of H-shaped steel is horizontally welded in the middle and upper parts of the main body to form the support bracket of the corbel.

[0022] Preferred Technical Solution 2: In Step 2, the end of the main body H-shaped steel of the support bracket of the corbel without stiffening plates is firmly welded to the side of the original shoulder column.

[0023] At the same time, a group of horizontally arranged H-shaped steel in the support bracket of the corbel is tightly welded to the top of the lower flange plate of the original crane beam.

[0024] Preferred Technical Solution 3: In Step 3, after removal, polish all the positions of the remaining reused structures that involve cutting and removing components.

[0025] Preferred Technical Solution 4: In Step 4, appropriately add rib plates at the positions of the original factory building columns and shoulder columns to ensure the firmness and reliability of the connection points.

[0026] Preferred Technical Solution 5: The heightened part and the original part of the shoulder column form a new steel column system.

[0027] (3) Technical Effects

[0028] Adopting the above structure makes this solution have the following beneficial effects:

[0029] 1. By adopting this in-situ height increase and transformation technology for factory building crane girders, it has strong applicability and pertinence for the transformation of a certain span in the transformation of existing multi-span workshop factory buildings. For the situation of not demolishing the original workshop factory building and crane girder system but building it all anew, and only increasing and modifying the crane operation height, it has the actual effect of being widely promoted and applied. It can not only meet the requirements of crane operation for the transformation and construction of new production lines, but also ensure the normal operation of the original facilities in adjacent areas, and minimize the impact on adjacent production lines and adjacent workshop factory buildings during the transformation of the workshop factory building crane girder system, saving the transformation cost to the greatest extent.

[0030] 2. For the transformation and construction of new "high-end, intelligent, green, and efficient" steel industry production lines advocated by the country today, to eliminate the original backward production unit production lines and solve problems such as land shortage, environmental protection, production capacity, and technological backwardness in the original steel plant, it has a broad application prospect. It is of great significance for "manufacturing green" in the steel industry market and actively practicing the high-quality development of the steel industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0032] Figure 1 is the height diagram of the crane and crane girder before the transformation of this solution;

[0033] Figure 2 is the height diagram of the crane and crane girder after the transformation of this solution;

[0034] Figure 3 is the structural diagram of the connection between the supporting bracket and the original crane girder after the transformation of this solution.

[0035] Among them, 1. Supporting bracket, 11. Main body, 12. Web, 13. Reinforcing plate, 2. Crane girder, 21. Shoulder girder, 22. Shoulder column, 23. Rail, 3. Factory building column. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0037] Embodiment

[0038] The Baosteel Cold Rolling C411 project uses the original workshop building and site to transform and construct a new type of cold rolling electro-galvanized production line with "high-end, intelligent, green, and efficient" features. It is required to increase the height of the crane beam in the workshop from the original 8.85m to 15.35m. The original main workshop building is a continuous multi-span workshop. The 7A - 7B spans are used for transformation, and there are online production unit lines in the other spans. The 7B-axis workshop cannot be simply demolished and rebuilt, and can only be transformed online in place. Through on-site inspections and sufficient preliminary demonstrations and calculations, the technical method of this plan is adopted to increase the height of the crane beam system of the 7A - 7B spans in place online, solve the thorny problem that the structure of the 7B-week workshop cannot be simply demolished and rebuilt, which affects the operation of the production unit line of the 7B - 7C spans, and achieve the goal of using in-place transformation to construct a new type of cold rolling electro-galvanized production line with "high-end, intelligent, green, and efficient" features.

[0039] As Figures 2 - 3 shown, this embodiment provides a method for increasing the height of a crane beam in a large industrial workshop in place. The method specifically includes the following steps:

[0040] Step 1, fabrication of the supporting bracket 1 for the corbel:

[0041] The supporting bracket for the corbel has an H-shaped steel as the main body 11, with stiffening plates 13 on the main body 11. At the same time, another group of H-shaped steels is transversely welded in the upper middle part of the main body 11 to form the supporting bracket 1 for the corbel;

[0042] Among them, the length L of the H-shaped steel of the main body 1 is 500mm, and the specification is HM500*360*14*20;

[0043] There is a web 12 in the middle of the H-shaped steel of the main body 1, and the stiffening plates 13 are welded on both sides of the web 12 at a position 140mm away from the outer edge;

[0044] The thickness of the stiffening plate 13 is 14mm;

[0045] The length of the transverse H-shaped steel = 400mm, and the specification is HW200*200*8*12;

[0046] Step 2, respectively add supporting brackets 1 for the corbels on both sides of the end shoulder beam 21 of the original supporting crane beam 2;

[0047] The top of the supporting bracket 1 for the corbel is tightly fixed to the top of the lower flange of the original crane beam 2, and one end is firmly welded to the side of the original shoulder beam 21; that is, the end of the H-shaped steel of the main body 11 of the supporting bracket 1 for the corbel without the stiffening plate 13 is firmly welded to the side of the original shoulder beam column 22. At the same time, the transverse group of H-shaped steels in the supporting bracket 1 for the corbel is tightly welded to the top of the lower flange plate of the original crane beam 2;

[0048] Step 3, cut and remove the track 23 on the original crane beam 2 and the original crane beam 2 and the backing plate on the upper part of the original shoulder beam column 22;

[0049] Demolish the track 23 laid on the original traveling beam 2;

[0050] At the position of the support 1, cut and demolish the part between the original shoulder column beam 22 and the shoulder beam 21, that is, cut and demolish one section at the end of the original two traveling beams 2 from top to bottom in the middle between the edge of the original shoulder beam 21 and the edge of the H-shaped steel HW200*200*8*12 on the installed support 1; At the position of the support corbel bracket 1, cut and demolish the end part of the traveling beam above the original shoulder beam 21 part, that is, cut and demolish one section at the end of the original two traveling beams 2 from top to bottom in the middle between the original shoulder beam 21 and the edge of the H-shaped steel HW200*200*8*12 on the installed support corbel bracket 1;

[0051] Demolish the backing plate between the original traveling beam 2 and the shoulder beam 21 to expose the body structure of the shoulder beam 21;

[0052] After demolition, grind the positions of all the remaining recycled structures that involve cutting and demolishing components;

[0053] Step Four, design and install the shoulder column beam 22 of the increased-height traveling beam. According to the current situation after demolishing the original steel structure, design the technical requirements for the newly added shoulder column beam 22 of the increased-height traveling beam and the connection nodes with the original structure;

[0054] The shoulder column beam 22 of the increased part is fixedly connected to the original factory building column 3 and the shoulder column beam 22;

[0055] Also appropriately add gusset plates at the positions of the original shoulder column beam 22 and the original factory building column 3 to ensure the firmness and reliability of the connection points;

[0056] Step Five, install a new traveling beam system and supporting facilities on the newly added and increased shoulder column beam 22 of the transformation to meet the requirements of the in-situ height increase transformation of the factory building traveling beam 2, including reinstalling supporting parts such as the track 23 and the backing plate.

[0057] Adopting this in-situ height increase transformation technology for the traveling beam of the factory building has strong applicability and pertinence for the transformation of a certain span in the original continuous multi-span workshop factory building.

[0058] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for in-situ heightening and reconstruction of a crane beam in a large industrial plant, characterized by: The steps include: Step 1: manufacturing a supporting bracket (1) for supporting the stability of the original traveling beam; Step 2, respectively adding supporting brackets (1) on both sides of the end shoulder beam (21) supporting the original traveling beam (2); The top of the supporting bracket (1) is fastened to the top of the lower flange of the original traveling beam (2), and one end is firmly welded to the side of the original shoulder beam (21); Step 3, cutting and removing the track (23) on the original traveling beam (2) and the original traveling beam (2) and the pad on the upper part of the shoulder beam column (22); in: First, the track (23) laid on the original traveling beam (2) is removed; Secondly, at the position of the supporting bracket (1), the end of the traveling beam (2) above the original shoulder beam (21) is cut and removed; Then, the pad between the original traveling beam (2) and the shoulder beam (21) is removed to expose the main structure of the shoulder beam (21); Step 4, designing and installing a shoulder beam column (22) of the heightened rear traveling beam (2), and the heightened shoulder beam column (22) is fixedly connected to the original plant column (3); Step 5: Reinstall the track (23).

2. The method for in-situ heightening and reconstruction of a crane beam of a large industrial plant according to claim 1 is characterized by: The supporting bracket (1) has an H-shaped steel as a main body (11), a stiffening plate (13) is welded to the side of the H-shaped steel, and another group of H-shaped steel is transversely welded to the middle and upper part of the main body (11) to form a bracket (1).

3. The method for in-situ heightening and reconstruction of a crane beam of a large industrial plant according to claim 2 is characterized by: In step 2, one end of the H-shaped steel without the stiffened plate (13) in the main body (11) of the supporting corbel bracket (1) is firmly welded to the side of the original shoulder beam column (22); At the same time, a group of H-shaped steels in the horizontal direction of the supporting bracket (1) are tightly welded to the lower flange plate of the original traveling beam (2).

4. The method for in-situ heightening and reconstruction of a crane beam of a large industrial plant according to claim 1 is characterized by: In step three, after demolition, all locations involving cutting and demolishing components of the remaining reused structure are polished.

5. The method for in-situ heightening and reconstruction of a crane beam of a large industrial plant according to claim 1 is characterized by: In step 4, stiffeners are added at the positions of the original plant columns (3) and shoulder beam columns (22) to ensure that the connection points are firm and reliable.

6. The method for in-situ heightening and reconstruction of a crane beam of a large industrial plant according to claim 1 is characterized by: The increased portion and the original portion of the shoulder beam column (22) form a new steel column system.

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