Large-span structure of closed coal conveying gallery of large-dip-angle belt conveyor

Abstract

The invention discloses a large-span structure of a closed coal conveying gallery of a large-dip-angle belt conveyor, which comprises at least one large-dip-angle belt conveyor, a plurality of large-dip-angle belt conveyors and a plurality of small-dip-angle belt conveyors, the large-span closed gallery structure is a through truss, and the large-dip-angle belt conveyor is arranged in the large-span closed gallery structure and keeps the same dip angle; the support column system is composed of a main frame column, an auxiliary frame column and a frame beam, and a double-row-column lateral force resisting system is formed so as to jointly bear horizontal force caused by the large-dip-angle belt conveyor and the large-span closed gallery structure. A structure with a large dip angle can be formed, the device can be matched with installation of a large-dip-angle belt conveyor, and the device can serve as a main coal conveying channel of an iron and steel plant or a coal-fired power plant. By adopting the through truss structure, a closed space can be formed, pulverized coal is prevented from flying, the environmental protection requirement of a factory is met, and the passing safety of maintainers can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying corridors, and in particular to a large-span structure of a closed coal conveying corridor of a large-angle belt conveyor. Background Art

[0002] High-angle belt conveyors are a type of equipment developed based on conventional belt conveyor technology, capable of conveying materials at extremely high angles. As a highly efficient continuous conveying device, they have played an important role in industries such as coal, ports, electricity, and building materials.

[0003] Enclosed coal handling corridors are the dominant structural form used for the main coal handling routes in coal-fired power plants in China. They prevent the spread of coal dust, meeting power plant environmental protection requirements. They also provide access for maintenance personnel.

[0004] While existing high-angle belt conveyor support technologies utilize steel truss structures, these structures are typically designed as open trestles, which do not meet environmental protection requirements. Furthermore, these structures have a relatively small span (less than 15m), making the land beneath the trestles difficult to utilize.

[0005] In the existing closed corridor structure technology, although there are large-span steel truss structures, such structures are only suitable for coal conveyor belts with a small inclination angle, and therefore cannot be used for large-angle belt conveyors. Summary of the Invention

[0006] The main purpose of the present invention is to provide a large-span structure of a closed coal conveying corridor of a large-angle belt conveyor, aiming to solve the existing technical problems.

[0007] To achieve the above-mentioned object, the present invention provides a large-span structure of a closed coal conveying corridor of a large-angle belt conveyor, comprising:

[0008] There shall be at least one high-angle belt conveyor;

[0009] The large-span enclosed corridor structure is a bottom-supported truss, and the large-angle belt conveyor is arranged in the large-span enclosed corridor structure and maintains the same inclination angle;

[0010] The support column system is composed of main frame columns, auxiliary frame columns and frame beams, forming a double-row column lateral force resistance system to jointly withstand the horizontal forces caused by the large-angle belt conveyor and the large-span closed corridor structure.

[0011] Furthermore, the large-span closed corridor structure includes oppositely arranged inclined lower chords, an oppositely arranged inclined upper chord is provided above the inclined lower chord, the inclined upper chord is connected to the inclined lower chord through a plurality of web members, secondary roof beams are provided between the inclined upper chords and between the inclined lower chords, the upper surface of the inclined lower chord is arranged with a corridor bridge deck, and the inclined lower ends of the inclined upper chord and the inclined lower chord are provided with truss end columns.

[0012] Furthermore, the corridor bridge deck is composed of a corrugated steel plate bottom formwork and a cast-in-place concrete slab. The corridor bridge deck is connected to the floor and roof secondary beams through bolts. The bolts are arranged along the length direction of the floor and roof secondary beams and are welded to the upper flange of the floor and roof secondary beams at every trough along the corrugated steel plate bottom formwork.

[0013] Furthermore, a pedestrian steel ladder is arranged on the corridor bridge deck, and the pedestrian steel ladder is welded in sections to the steel ladder embedded parts anchored on the cast-in-place concrete slab. The pedestrian steel ladder is arranged on both sides of the high-angle belt conveyor.

[0014] Furthermore, the steep-angle belt conveyor is installed on the inclined lower chord plane system, and its legs are welded to the leg embedded parts anchored in the cast-in-place concrete slab.

[0015] The beneficial effects of the present invention are embodied in:

[0016] The present invention can be constructed with a large inclination angle, compatible with the installation of high-angle belt conveyors, and can serve as the main coal transport channel in steel mills or coal-fired power plants. The use of a bottom-supported truss structure creates an enclosed space, preventing the scattering of coal dust, meeting the factory's environmental protection requirements, and ensuring the safety of maintenance personnel.

[0017] The present invention adopts a large-span structure, does not occupy a large amount of space below the horizontal projection range of the structure, and improves land utilization.

[0018] The support system of the present invention adopts a double-row column lateral force resistance support system, and has good force bearing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 AA section diagram of the structure;

[0021] Figure 3 This is a schematic diagram of the large-span closed corridor structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the local structure of the corridor bridge deck of the present invention;

[0023] Figure 5This is a schematic diagram of the local structure of the corridor bridge deck of the present invention;

[0024] Figure 6 This is a schematic diagram of the support column system structure of the present invention;

[0025] Description of reference numerals:

[0026] 1. High-angle belt conveyor; 2. Large-span enclosed corridor structure; 21. Oblique lower chord; 22. Oblique upper chord; 23. Web member; 24. Truss end column; 25. Secondary beam of floor and roof; 26. Corridor bridge deck; 261. Corrugated steel plate bottom formwork; 262. Cast-in-place concrete slab; 263. Bolts; 264. Leg embedded parts; 265. Steel ladder embedded parts; 266. Pedestrian steel ladder; 27. Corridor roof; 3. Support column system; 31. Main frame column; 32. Auxiliary frame column; 33. Frame beam. 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-6 The present invention provides a large-span closed coal conveying corridor structure of a large-angle belt conveyor, comprising:

[0029] A high-angle belt conveyor 1 is provided with at least one;

[0030] The large-span closed corridor structure 2 is a bottom-supported truss, and the large-angle belt conveyor 1 is arranged inside the large-span closed corridor structure 2 and maintains the same inclination angle;

[0031] The support column system is composed of main frame columns 31, auxiliary frame columns 32 and frame beams 33, forming a double-row column lateral force resistance system to jointly withstand the horizontal forces caused by the large-angle belt conveyor 1 and the large-span closed corridor structure 2.

[0032] The present invention incorporates the following key technologies: a steeply inclined through-the-wall truss structure serves as the main structure of the long-span enclosed corridor. A double-row column frame structure serves as the lateral force support system for the long-span enclosed corridor. Welded steel sections with angled upper flanges serve as secondary beams for the floor and roof. Highly inclined pedestrian steel ladders are connected in sections on the floor.

[0033] The present invention can form a structure with a large inclination angle, which can match the installation of a large-angle belt conveyor and can serve as the main coal transportation channel for steel mills or coal-fired power plants. By adopting a bottom-supported truss structure, an enclosed space can be formed to prevent the scattering of coal powder, meet the environmental protection requirements of the factory, and ensure the safety of maintenance personnel. The present invention adopts a large-span structure, which does not occupy a large amount of space below the horizontal projection range of the structure, thereby improving land utilization. The support system of the present invention adopts a double-row column lateral force support system with good load-bearing performance.

[0034] In another embodiment, the support column system 3 may be a steel frame structure or a reinforced concrete frame structure.

[0035] In one embodiment, the large-span enclosed corridor structure 2 includes opposing inclined lower chords 21, with opposing inclined upper chords 22 disposed above the inclined lower chords 21. The inclined upper chords 22 are connected to the inclined lower chords 21 via a plurality of web members 23. Floor and roof secondary beams 25 are disposed between the inclined upper chords 22 and the inclined lower chords 21. A corridor deck 26 is disposed on the upper surface of the inclined lower chords 21. Truss end columns 24 are disposed at the oblique lower ends of the inclined upper chords 22 and the inclined lower chords 21. The truss end columns 24 are connected to the top ends of the main frame columns 31, and the connection can be bolted or welded.

[0036] In another embodiment, the web members 23 in the large-span closed corridor structure 2 are arranged according to design requirements.

[0037] In one embodiment, the corridor deck 26 is composed of a corrugated steel base form 261 and a cast-in-place concrete slab 262. The corridor deck 26 is connected to the floor and roof secondary beams 25 via studs 263. The studs 263 are arranged along the length of the floor and roof secondary beams 25 and welded to the upper flange of the floor and roof secondary beams 25 at every trough along the corrugated steel base form 261. The diameter of the studs 263 should be no less than 20 mm, and their length should be no less than half the thickness of the cast-in-place concrete slab 262, as determined by calculation.

[0038] In another embodiment, a corridor roof is provided above the corridor bridge deck. The corridor roof 27 can be similar to the corridor bridge deck 26, and can be composed of a corrugated steel plate bottom formwork 261 and a cast-in-place concrete slab 262 to form a heavy roof; it can also be designed as a light roof.

[0039] In one embodiment, pedestrian steel ladders 266 are arranged on the corridor deck 26. The pedestrian steel ladders 266 are welded in sections to steel ladder embedded components 265 anchored in the cast-in-place concrete slab 262. The pedestrian steel ladders 266 are arranged on both sides of the steeply inclined belt conveyor 1. The clearance within the long-span enclosed corridor structure 2 should meet the requirements of process equipment operation, pipeline installation, and maintenance personnel.

[0040] In one embodiment, the steep-angle belt conveyor 1 is installed on a plane system of the inclined lower chord 21 , and its legs are welded to the leg embedded parts 264 anchored in the cast-in-place concrete slab 262 .

[0041] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes in which A and B are satisfied at the same time. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A large-span closed coal conveying corridor structure of a large-angle belt conveyor, characterized in that ,include: A high-angle belt conveyor (1) is provided with at least one; The large-span closed corridor structure (2) is a bottom-supported truss, and the large-angle belt conveyor (1) is arranged in the large-span closed corridor structure (2) and maintains the same inclination angle; The support column system is composed of a main frame column (31), an auxiliary frame column (32) and a frame beam (33), forming a double-row column lateral force resistance system to jointly withstand the horizontal force caused by the large-angle belt conveyor (1) and the large-span closed corridor structure (2).

2. The large-span structure of a closed coal conveying gallery of a high-angle belt conveyor according to claim 1, characterized in that: The large-span closed corridor structure (2) comprises oppositely arranged inclined lower chords (21), an oppositely arranged inclined upper chord (22) is arranged above the inclined lower chord (21), the inclined upper chord (22) is connected to the inclined lower chord (21) through a plurality of web members (23), a secondary roof beam (25) is arranged between the inclined upper chords (22) and between the inclined lower chords (21), a corridor bridge deck (26) is arranged on the upper surface of the inclined lower chord (21), and truss end columns (24) are arranged at the inclined lower ends of the inclined upper chord (22) and the inclined lower chord (21).

3. The large-span structure of the closed coal conveying gallery of the high-angle belt conveyor according to claim 2, characterized in that: The corridor bridge deck (26) is composed of a corrugated steel plate bottom formwork (261) and a cast-in-place concrete slab (262). The corridor bridge deck (26) is connected to the floor and roof secondary beam (25) through bolts (263). The bolts (263) are arranged along the length direction of the floor and roof secondary beam (25) and are welded to the upper flange of the floor and roof secondary beam (25) at every trough along the corrugated steel plate bottom formwork (261).

4. The large-span structure of the closed coal conveying gallery of the high-angle belt conveyor according to claim 3, characterized in that: A pedestrian steel ladder (266) is arranged on the corridor bridge deck (26), and the pedestrian steel ladder (266) is welded in sections to a steel ladder embedded part (265) anchored in the cast-in-place concrete slab (262). The pedestrian steel ladder (266) is arranged on both sides of the high-angle belt conveyor (1).

5. The large-span structure of the closed coal conveying gallery of the high-angle belt conveyor according to claim 3, characterized in that: The high-angle belt conveyor (1) is installed on the inclined lower chord (21) plane system, and its legs are welded to the leg embedded parts (264) anchored on the cast-in-place concrete slab (262).

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