Online replacement method for the steel structure of belt conveyors

Abstract

The present application discloses an on-line replacement method for the steel structure of a belt conveyor, which includes the following steps: 1) Decompose the steel structure of the belt conveyor according to the original steel structure of the belt conveyor; 2) Utilize the shutdown time to gradually construct from the tail of the belt conveyor to the head of the belt conveyor, place the split horizontal steel structure close to the inner side of the original horizontal steel structure, and perform segmented welding and reinforcement according to the belt conveyor steel structure drawing until a formed steel structure identical to the structure of the steel structure drawing is formed inside the original steel structure; 3) After fixing the new steel structure, remove the original steel structure, thereby completing the replacement of the steel structure of the belt conveyor without stopping production. The on-line replacement method for the belt conveyor of the present invention, without stopping the machine, utilizes the short-term shutdown time of the belt conveyor every day, adopts local segmented welding to form, and finally realizes the replacement of the overall steel structure of the belt conveyor, without affecting the stable operation of production, and is a very simple and practical belt conveyor steel structure replacement method.

Description

Technical Field

[0001] This application relates to the technical field of belt conveyor steel structure replacement, and more specifically, to an on-line replacement method for belt conveyor steel structures. Background Art

[0002] After long-term operation, the steel structure of the belt conveyor is prone to rust and corrosion, and its strength cannot meet the production requirements, so it needs to be replaced in time. Since the feeding belt runs in a single line, if the whole is replaced, the coke oven will have to stop production, resulting in great economic losses. Therefore, it is urgent to develop an on-line replacement method for the belt conveyor steel structure to ensure the stable operation of production. Summary of the Invention

[0003] Aiming at the above deficiencies of the existing technology, the purpose of the present invention is to provide an on-line replacement method for belt conveyor steel structures.

[0004] To achieve the above object, an on-line replacement method for belt conveyor steel structures provided by the present invention adopts the following technical solutions:

[0005] The on-line replacement method for belt conveyor steel structures includes the following steps:

[0006] 1) Decompose the belt conveyor steel structure according to the original steel structure of the belt conveyor. The steel structure in the horizontal direction is split into multiple sections of steel structures, and the steel structures in the vertical direction and the reinforcing rib plates are cut according to the original steel structure of the belt conveyor.

[0007] 2) Utilize the shutdown time to gradually construct from the tail of the belt conveyor to the head of the belt conveyor. Press the split horizontal steel structures in step 1) tightly against the inner side of the original horizontal steel structures, and perform segmented welding and reinforcement according to the belt conveyor steel structure drawings until a formed steel structure the same as the structure in the steel structure drawings is formed inside the original steel structure, that is, the new steel structure.

[0008] 3) After fixing the new steel structure, remove the original steel structure, thus completing the replacement of the belt conveyor steel structure without stopping production.

[0009] Preferably, the length of each of the multiple sections of steel structures into which the steel structure in the horizontal direction is split is not greater than 2 meters.

[0010] Preferably, the steel structures in both the horizontal direction and the vertical direction are made of No. 7 equal-angle steel with a thickness of 6 mm, and the reinforcing rib plates are processed and manufactured with steel plates with a thickness of 8 mm.

[0011] Preferably, the horizontal steel structure in the new steel structure is indented 6 mm - 10 mm inward based on the horizontal steel structure of the original steel structure.

[0012] Preferably, the new steel structure can be fixed on the columns of the original belt conveyor steel structure.

[0013] Compared with the prior art, the method for online replacement of the belt conveyor steel structure of the present invention utilizes the short downtime of the belt conveyor every day without stopping the machine. By adopting local segmented welding forming and finally replacing the whole belt conveyor steel structure, it does not affect the stable operation of production, and is a very simple and practical method for replacing the belt conveyor steel structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] By reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, other features, objects, and advantages of the present invention will become more apparent:

[0015] Figure 1 is the overall schematic diagram of the original belt conveyor steel structure;

[0016] Figure 2 is the sectional structure schematic diagram of the new belt conveyor steel structure;

[0017] In the figure, reference numerals: 1 - steel structure in the horizontal direction, 2 - steel structure in the vertical direction, 3 - reinforcing rib plate, 1' - a section of the steel structure after splitting the steel structure in the horizontal direction. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those of ordinary skill in the art can make several deformations and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0019] Embodiment 1

[0020] The method for online replacement of the belt conveyor steel structure includes the following steps:

[0021] 1) As shown in, according to the original steel structure of the belt conveyor, the belt conveyor steel structure is disassembled, wherein the steel structure 1 in the horizontal direction is split into multiple sections of steel structures, and the steel structure 2 in the vertical direction and the reinforcing rib plate 3 are cut according to the original steel structure of the belt conveyor; Figure 1

[0022] 2) Utilizing the downtime, construction is carried out gradually from the tail of the belt conveyor to the head of the belt conveyor. The split horizontal steel structure in step 1) is closely attached to the inner side of the original horizontal steel structure, and segmented welding and reinforcement are carried out according to the belt conveyor steel structure drawing until a formed steel structure with the same structure as the steel structure drawing is formed inside the original steel structure, that is, the new steel structure;

[0023] ​3) After the new steel structure is fixed, the original steel structure is dismantled, thus completing the replacement of the belt conveyor steel structure without stopping production.

[0024] The length of each of the multiple steel structures into which the horizontal steel structure is split is no more than 2 meters. Figure 2 As shown, the new belt conveyor steel structure segmented structure schematic diagram includes a steel structure 1' after the horizontal steel structure is split, a vertical steel structure 2 and a reinforcing rib 3.

[0025] The horizontal steel structure and the vertical steel structure are both made of No. 7 equal-angle steel with a thickness of 6 mm, and the reinforcing ribs are made of 8 mm thick steel plates.

[0026] The horizontal steel structure in the new steel structure is indented inward by 6mm-10mm based on the horizontal steel structure of the original steel structure.

[0027] The new steel structure can be fixed on the pillars of the original belt conveyor steel structure.

[0028] The online replacement method of the belt conveyor steel structure of the present application was applied to the replacement of the B411 belt steel structure of the third phase coal tower of the coal preparation workshop of Shagang Coking Plant. According to the on-site measurement and combined with the belt conveyor steel structure drawings, a team of 5 people was used to prefabricate the structure on site. In 12 days, the horizontal steel structure was decomposed, and the vertical steel structure and reinforcement plates were cut. The parts were then batch-produced into small scattered pieces. With 4 hours of transportation per day and 4 hours of downtime for online welding, the online replacement of the 246-meter belt conveyor steel structure can be completed in 26 working days.

[0029] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various variations or modifications within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. Method for online replacement of belt conveyor steel structure, characterized in that, It includes the following steps: 1) Decompose the steel structure of the belt conveyor according to the original steel structure of the belt conveyor. The steel structure in the horizontal direction is split into multiple sections of steel structure, and the steel structure and reinforcing rib plates in the vertical direction are cut according to the original steel structure of the belt conveyor; 2) Use the downtime to gradually construct from the tail of the belt conveyor to the head of the belt conveyor. Press the split horizontal steel structure in step 1) against the inner side of the original horizontal steel structure, and perform segmented welding and reinforcement according to the steel structure drawing of the belt conveyor until a formed steel structure identical to the steel structure drawing is formed inside the original steel structure, that is, the new steel structure; 3) After fixing the new steel structure, remove the original steel structure, thus completing the replacement of the steel structure of the belt conveyor without stopping production; The length of each section of the multiple sections of steel structure into which the steel structure in the horizontal direction is split is not greater than 2 meters; The horizontal steel structure in the new steel structure is indented 6 mm - 10 mm inward based on the horizontal steel structure of the original steel structure.

2. The on-line replacement method of the belt conveyor steel structure according to claim 1, characterized in that, Both the horizontal steel structure and the vertical steel structure adopt No. 7 equal-angle steel with a thickness of 6 mm, and the reinforcing rib plates are processed and manufactured with steel plates with a thickness of 8 mm.

3. The online replacement method for the belt conveyor steel structure according to claim 1, wherein, The new steel structure is fixed on the pillars of the original steel structure of the belt conveyor.

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