An installation method for the conical section of the hopper of a steel silo in a raw material yard

Abstract

The present invention discloses a method for installing cone sections of a steel silo hopper in a raw material yard, which comprises splitting the outer wall of the hopper into a cone section structure in the form of stepped sections, and first assembling the cone section pieces of each cone section on the ground to form a surrounding hierarchical structure. The pre-assembly realizes the cone section welding and hierarchical positioning, and then uses connecting angle steels for preliminary positioning and fixation, strictly controls the required distance of the weld, and then circumferentially welds and fixes the cone sections of adjacent levels through horizontal connecting plates, avoiding the conventional method of only being able to splice and lift the hopper one section at a time, and finally installing a wear-resistant lining on the inner wall, which solves the problem of the hopper being suspended above the operator during the splicing process and requiring vertical cross-operation.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure hopper cone sections, and more particularly to an installation method for a steel silo hopper cone section in a raw material yard. Background Art

[0002] Steel silos are common storage equipment in industrial enterprises. They are generally composed of one or more groups of steel silos and conveying mechanisms to form a storage line. The inner wall of the steel silo is generally provided with wear-resistant materials, but it is inevitable that wear will occur during long-term use. Therefore, the steel silo needs to be replaced, especially the cone section where the wear is the most serious. The side wall of the funnel is conventionally designed as a continuous straight section. The spacing between the on-site steel silo support columns is generally less than the diameter of the steel silo. During processing, the funnel needs to be divided into multiple pieces for on-site assembly. However, there is only space for assembling one section of the funnel at the bottom of the silo. There is an urgent need for a method to safely and efficiently assemble the cone section of the steel structure funnel in a small space.

[0003] The existing technology has the following disadvantages: (1) The conventional method of assembling one segment and then lifting the segment is time-consuming and labor-intensive, and the assembled funnel is always hanging at the top, which poses a high safety risk for vertical cross-operation; (2) The installation process requires high lifting accuracy, requiring personnel to adjust the position, and deformation is prone to occur during the welding process. Summary of the Invention

[0004] In response to the above defects or improvement needs of the prior art, the present invention provides a method for installing the cone section of a steel silo hopper in a raw material yard, in which the outer wall of the hopper is divided into a cone section structure in the form of stepped sections, and the cone section pieces of each cone section can be assembled on the ground to form a surrounding hierarchical structure. The pre-assembly realizes the cone section welding and hierarchical positioning, and then the connecting angle steel is used for preliminary positioning and fixation, and the required distance of the weld is strictly controlled. The cone sections of adjacent levels are circumferentially welded and fixed through horizontal connecting plates, avoiding the conventional method of assembling and lifting the hopper one section at a time, solving the problem that the hopper is always suspended above the operator during the splicing process and requires vertical cross-operation, thereby improving the installation efficiency and safety of the funnel cone section.

[0005] In order to achieve the above object, the present invention provides a method for installing a steel silo hopper cone section in a raw material yard, comprising the following steps:

[0006] S100: Decompose the continuous conical section of the silo wall in the design drawing into conical sections with stepped silo walls. Based on the actual installation space on site, the hopper is segmented into multiple upper, middle, and lower conical sections, with segment heights generally ranging from 1.5m to 2m. To ensure that each level of the hopper can be stacked and assembled on the ground, the bottom opening of the upper conical section is 50mm larger in diameter than the top opening of the lower conical section, and the slopes of the inclined conical hoppers at different levels are consistent. The upper and lower conical sections are welded together using a horizontal connecting plate. The horizontal connecting plate and each level of the conical section are further divided into multiple arc-shaped plates of equal size based on the actual installation space on site. To avoid the formation of through-seam welds in the hopper conical section, which could create weak points, the vertical welds of each level of the conical section should be staggered during construction modeling. After segmentation is completed, unified modeling and processing drawings are drawn.

[0007] S200, assembling the cone segments: transporting the cone segments of the lower cone segment to the bottom of the target location where the funnel is to be installed in order from top to bottom, connecting the multiple cone segments end to end and welding them to form a vertical weld, and then transporting the cone segments of the middle cone segment to the periphery of the lower cone segment for welding and assembly. After the middle cone segment is assembled and welded into shape, the upper cone segment is completed by continuing to weld the periphery of the middle cone segment according to the method for assembling the middle cone segment;

[0008] S300: Docking the cone sections. Lift the upper cone section to a height higher than the middle cone section. At the lower edge of the upper cone section, evenly distribute multiple first brackets around the outer wall of the upper cone section, with the through holes on the first brackets facing downward. At the upper edge of the middle cone section, corresponding to the first brackets, weld and fix a second bracket to the outer wall of the middle cone section, with the through holes of the second bracket facing upward and aligned with the through holes of the first bracket. Adjust the position of the upper cone section until the required distance for circumferential welding is met. Use adjustment bolts to connect and fix each group of corresponding first brackets to the second bracket, and then complete the circumferential welding fixation between adjacent cone sections.

[0009] S400, paving wear-resistant lining, the wear-resistant lining adopts cast stone bricks of different thicknesses, and the thickness of the cast stone bricks laid in each cone section decreases from bottom to top, ensuring that the inner wall of the entire hopper is flat and continuous during paving.

[0010] Furthermore, the S300 includes a welded horizontal connecting plate, which is an annular structure, with its inner circle welded to the cone section located below, and its outer circle welded to the cone section located above, forming two circumferential welds.

[0011] Furthermore, the S200 includes: before the end-to-end seams of each of the cone segments are butted together, installing a ceramic backing plate at the vertical seam so that the vertical weld is formed on one side.

[0012] Furthermore, the S300 includes a welded bottom cone section, which is an integrally formed structure and is directly welded and fixed to the bottom of the lower cone section. The first bracket, the second bracket and the adjustment bolt are retained after installation.

[0013] According to another aspect of the present invention, a steel silo hopper for a raw material yard is provided, comprising a first cone section, a second cone section, a third cone section, a bottom cone section and a horizontal connecting plate, which are sequentially installed from top to bottom. The first cone section, the second cone section and the third cone section are annular structures with a necked mouth, and the annular structure comprises a plurality of arc-shaped cone section pieces, which are welded and fixed end to end, and the joints are vertical welds. The bottom cone section is an integral structure, which is welded and fixed to the bottom of the third cone section. The horizontal connecting plate is arranged at the connection between different cone sections, and the horizontal connecting plate is annular in structure. The horizontal connecting plate is horizontally arranged, and its inner circle is welded to the cone section located below, and its outer circle is welded to the cone section located above, forming two circumferential welds.

[0014] Furthermore, it includes a connecting angle steel, which connects and fixes two adjacent cone sections.

[0015] Furthermore, the connecting angle steel includes a first bracket, an adjusting bolt, and a second bracket. The first bracket and the second bracket are L-shaped brackets with through holes provided thereon. The first bracket is welded and fixed to the outer wall of the upper conical section, and the second bracket is welded and fixed to the outer wall of the lower conical section. The through holes of the first bracket and the second bracket are aligned. Multiple first brackets and second brackets are evenly distributed on the outer circumference of the two conical sections. The adjusting bolt passes through the through hole, and the adjusting bolt fixes the first bracket and the second bracket.

[0016] Furthermore, it includes cast stone bricks of different thicknesses, which are paved and fixed on the inner wall of the entire hopper. The cast stone bricks of different thicknesses laid on each cone section decrease in thickness from bottom to top, ensuring that the inner wall surface of the hopper is flat and continuous.

[0017] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0018] 1. The present invention provides a method for installing the cone section of a steel silo hopper in a raw material yard, which splits the outer wall of the hopper into a stepped cone section structure. The cone section pieces of each cone section can be assembled on the ground to form a surrounding layered structure. The pre-assembly realizes the cone section welding and layer positioning, and then the connecting angle steel is used for preliminary positioning and fixation, and the required distance of the weld is strictly controlled. The cone sections of adjacent layers are circumferentially welded and fixed through horizontal connecting plates, avoiding the conventional method of assembling and lifting the hopper section by section, solving the problem that the hopper is always suspended above the operator during the splicing process and requires vertical cross-operation, thereby improving the installation efficiency and safety of the funnel cone section.

[0019] 2. The present invention provides a method for installing the cone section of a steel silo hopper in a raw material yard. The adjacent cone sections are first preliminarily fixed by connecting angle steels, which reduces the difficulty of docking the annular seams and allows for fine-tuning. The connecting angle steels are not removed after installation, thereby enhancing the overall strength of the funnel and extending the service life of the funnel.

[0020] 3. The present invention provides a steel silo hopper for a raw material yard. The internal wear-resistant lining and the outer wall of the hopper are separated and assembled separately. The internal cast stone bricks of different thicknesses ensure that the inner wall of the hopper is continuous and flat, avoiding the accumulation of materials in the horizontal section, reducing the cost of cleaning and maintenance of the funnel in the later stage, and reducing the wear of the hopper by the materials. The outer wall adopts a multi-section structure, which effectively bears the weight of the cast stone bricks of different thicknesses and can be pre-assembled, reducing the time taken for the hanging assembly process and reducing the operational risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front view of a steel silo hopper in a raw material yard according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of assembling a steel silo hopper in a raw material yard according to an embodiment of the present invention;

[0023] Figure 3 This is a top view of a method for installing a steel silo hopper in a raw material yard according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic structural diagram of a connecting angle steel in a steel silo hopper in a raw material yard according to an embodiment of the present invention;

[0025] Figure 5 This is a partial cross-sectional view of the inner wall of a steel silo hopper in a raw material yard according to an embodiment of the present invention;

[0026] Figure 6 This is a flow chart for installing a steel silo hopper in a raw material yard according to an embodiment of the present invention.

[0027] In all the drawings, the same reference numerals represent the same technical features, specifically: 1-first cone section, 2-second cone section, 3-third cone section, 4-bottom cone section, 5-connecting angle steel, 6-cast stone bricks of different thickness, 7-horizontal connecting plate, 8-vertical weld, 9-circumferential weld, 41-mounting support, 51-first bracket, 52-adjusting bolt, 53-second bracket. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0029] like Figures 1-6 The shown embodiment shows a steel silo hopper for a raw material yard, which comprises a first cone section 1, a second cone section 2, a third cone section 3 and a bottom cone section 4, which are installed in sequence from top to bottom, wherein the cone sections located on the upper three layers are all of a tapered annular structure, which comprises a plurality of arc-shaped plates, i.e., cone section pieces, which are fixed by welding at vertical welds 8, and the bottom cone section 4 is an integral structure, which is welded and fixed to the bottom of the third cone section 3, and can be decomposed into a plurality of continuous, tapered cone sections according to the actual size of the hopper; a horizontal connecting plate 7 is provided at the connection between different cone sections, which is of an annular structure and is arranged horizontally, with the inner circle welded to the cone section located below and the outer circle welded to the cone section located above, forming two circumferential welds 9. After the entire hopper is welded, the horizontal connecting plates 7 between the different cone sections form a step, and using this structure, cone sections with multiple horizontal connecting plates 7 welded thereto can be pre-assembled on the ground, and then assembled continuously.

[0030] Furthermore, if Figure 1-Figure 3As shown, the hopper includes a connecting angle steel 5. Before welding two adjacent cone sections, the adjacent ends of the two cone sections are connected and fixed by the connecting angle steel 5. Specifically, the connecting angle steel 5 includes a first bracket 51, an adjusting bolt 52, and a second bracket 53. The first bracket 51 and the second bracket 53 are both L-shaped brackets, and through holes are set on the opposite sides thereof for setting the adjusting bolts 52. The first bracket 51 is welded and fixed to the upper cone section and is located on the outer side of the lower part of the cone section. The second bracket 53 is welded and fixed to the lower adjacent cone section and is located on the outer side of the upper part of the cone section. The through holes of the two brackets are aligned. Multiple first brackets 51 and second brackets 53 are evenly distributed on the outer circumference of the two cone sections. The two cone sections are adjusted to meet the distance requirements for circumferential welding. Then, the opposite sides of the first bracket 51 and the second bracket 53 are fixed by the adjusting bolts 52 to achieve the purpose of temporarily fastening the adjacent cone sections. Subsequently, the horizontal connecting plate 7 is welded to complete the circumferential welding of the adjacent cone sections. Before welding, fine adjustment can be performed by the adjusting bolts 52 to reduce adjustment errors. After the circumferential welding is completed, the connecting angle steel 5 is not removed.

[0031] Furthermore, if Figure 1-Figure 5 As shown, the hopper includes cast stone bricks 6 of different thicknesses, which are paved and fixed on the inner wall of the entire hopper. Preferably, the cast stone bricks 6 of different thicknesses laid on each cone section are reduced in thickness by 5 cm from bottom to top, ensuring that the inner wall surface of the entire hopper is flat from top to bottom, eliminating the stepped platform generated during welding, and avoiding the accumulation of materials on the steps when flowing through the hopper. At the same time, it enhances the wear resistance of the hopper and extends its service life.

[0032] Furthermore, if Figures 1-6 As shown, the method for installing the cone section of the steel silo hopper in the raw material yard includes the following steps:

[0033] S100: Decompose the continuous conical section of the silo wall in the design drawing into conical sections with stepped silo walls. Based on the actual installation space on site, divide the hopper into multiple conical sections located at the upper, middle, and lower parts, denoted herein as first conical section 1, second conical section 2, and third conical section 3, respectively. Each conical section is then divided into multiple arc-shaped conical segments, ensuring a 5 cm staggered gap between adjacent upper and lower conical segments. After segmentation, unified modeling and processing drawings are drawn.

[0034] S200: Assembling the cone segments. The cone segments of the third cone segment 3 are transported from top to bottom to the bottom of the target location where the funnel is to be installed. The multiple cone segments are welded end to end to form a vertical weld seam 8. The cone segments of the second cone segment 2 are then transported to the periphery of the third cone segment 3 for assembly. Before the cone segments of the second cone segment 2 are aligned, ceramic backing plates are installed at the vertical seams to facilitate single-sided weld formation. After the second cone segment 2 is assembled and welded, the third cone segment 3 is welded to the periphery of the second cone segment 2 in the same manner as for installing the second cone segment 2.

[0035] S300, docking the cone sections, hoisting the first cone section 1 to a height of 1.6m, which is slightly higher than the height of the second cone section 2. At the lower edge of the first cone section 1, multiple first brackets 51 are welded and fixed to its outer wall at intervals of 30°, with the through holes set on the first brackets 51 facing downwards; at the upper edge of the second cone section 2, corresponding to the first brackets 51, second brackets 53 are welded and fixed to its outer wall at intervals of 30°, with the through holes of the second brackets 53 facing upwards and aligned with the through holes of the first brackets 51. Adjust the position of the first cone section 1 until the position is satisfied. To meet the required distance for circumferential welding, use adjusting bolts 52 to connect and fix the first bracket 51 and the second bracket 53 of each group. After temporarily positioning and fixing the adjacent cone segments by connecting angle steels 5, weld the horizontal connecting plate 7. Its inner circle is welded to the second cone segment 2 located below, and its outer circle is welded to the first cone segment 1 located above, forming two circumferential welds 9. Furthermore, a similar method is used to complete the welding and fixing of the third cone segment 3. The connecting angle steels 5 are not removed after installation. The bottom cone segment 4 is an integrally formed structure and is directly welded to the bottom of the third cone segment 3.

[0036] S400: paving the wear-resistant lining. The wear-resistant lining adopts cast stone bricks 6 of different thicknesses. The thickness of cast stone bricks 6 laid in each cone section decreases by 5 cm from bottom to top to ensure that the inner wall of the entire hopper is flat and continuous during paving.

[0037] Furthermore, if Figure 1 As shown, the S100 includes: the hopper is a stacked stepped hollow thin-walled frustum-shaped volume structure, and the hopper is divided into upper, middle and lower multi-level cone sections according to the actual installation space size on site. To facilitate on-site construction and assembly, the segment height is generally divided into 1.5m to 2m; to ensure that each level of the funnel can be stacked and assembled on the ground, the bottom opening of the upper cone section is 50mm larger in diameter than the top opening of the lower cone section, and the slopes of the inclined cone hoppers of different levels are consistent; the upper and lower cone sections are welded together by a horizontal connecting plate, and the horizontal connecting plate and each cone section are divided into multiple pieces according to the actual installation space size on site, generally three arc-shaped plates of equal size; to avoid the formation of through seams in the hopper cone section welds and the formation of weak points, the vertical welds of each cone section should be staggered alternately during construction modeling.

[0038] It will be easily understood by those skilled in the art that 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 and improvements 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 method for installing the cone section of a steel silo hopper in a raw material yard, characterized in that: The method comprises the following steps: S100, decomposing the continuous conical section of the silo wall in the design drawing into conical sections with stepped silo walls, and segmenting the hopper into upper, middle and lower sections according to the actual installation space size on site, with the section height generally ranging from 1.5m to 2m; to ensure that each level of the hopper can be stacked and assembled on the ground, the bottom opening of the upper conical section is 50mm larger in diameter than the top opening of the lower conical section, and the slopes of the inclined conical hoppers of different steps are consistent; the upper and lower conical sections are welded together by a horizontal connecting plate, and the horizontal connecting plate and each level of the conical section are further divided into multiple arc-shaped plates of equal size according to the actual installation space size on site; to avoid the formation of through seams in the hopper cone section welds, which form weak points, the vertical welds of each level of the cone section should be staggered alternately during construction modeling, and after the segmentation is completed, unified modeling and processing drawings are drawn; S200, assembling the cone segments: transporting the cone segments of the lower cone segment to the bottom of the target location where the funnel is to be installed in order from top to bottom, connecting the multiple cone segments end to end and welding them to form a vertical weld, and then transporting the cone segments of the middle cone segment to the periphery of the lower cone segment for welding and assembly. After the middle cone segment is assembled and welded into shape, the upper cone segment is completed by continuing to weld the periphery of the middle cone segment according to the method for assembling the middle cone segment; S300: Docking the cone sections. Lift the upper cone section to a height higher than the middle cone section. At the lower edge of the upper cone section, evenly distribute multiple first brackets around the outer wall of the upper cone section, with the through holes on the first brackets facing downward. At the upper edge of the middle cone section, corresponding to the first brackets, weld and fix a second bracket to the outer wall of the middle cone section, with the through holes of the second bracket facing upward and aligned with the through holes of the first bracket. Adjust the position of the upper cone section until the required distance for circumferential welding is met. Use adjustment bolts to connect and fix each group of corresponding first brackets to the second bracket, and then complete the circumferential welding fixation between adjacent cone sections. S400, paving wear-resistant lining, the wear-resistant lining is made of cast stone bricks of different thicknesses, and the thickness of the cast stone bricks laid in each cone section decreases from bottom to top, ensuring that the inner wall of the entire hopper is flat and continuous during paving; The S300 includes a welded horizontal connecting plate, which is an annular structure, with its inner circle welded to the cone section located below, and its outer circle welded to the cone section located above, forming two circumferential welds; The step S200 includes: before the end-to-end seams of each of the cone segments are butted together, installing a ceramic backing plate at the vertical seam so that the vertical weld is formed on one side; The S300 includes a welded bottom cone section, which is an integrally formed structure and is directly welded and fixed to the bottom of the lower cone section. The first bracket, the second bracket and the adjusting bolt are retained after installation.

2. A steel silo hopper for a raw material yard installed using the installation method described in claim 1, characterized in that: The invention comprises a first cone section (1), a second cone section (2), a third cone section (3), a bottom cone section (4) and a horizontal connecting plate (7) which are sequentially installed from top to bottom. The first cone section (1), the second cone section (2) and the third cone section (3) are annular structures with a necked mouth. The annular structure comprises a plurality of arc-shaped cone section pieces. The cone section pieces are welded and fixed end to end. The joints are vertical welds (8). The bottom cone section (4) is an integral structure and is welded and fixed to the bottom of the third cone section (3). The horizontal connecting plate (7) is arranged at the connection between different cone sections. The horizontal connecting plate (7) is an annular structure and is arranged horizontally. The inner circle of the horizontal connecting plate (7) is welded to the cone section located below, and the outer circle of the horizontal connecting plate (7) is welded to the cone section located above, forming two circumferential welds (9).

3. The steel silo hopper for a raw material yard according to claim 2, characterized in that: It comprises a connecting angle steel (5), wherein the connecting angle steel (5) connects and fixes two adjacent cone sections.

4. The steel silo hopper for a raw material yard according to claim 3, characterized in that: The connecting angle steel (5) includes a first bracket (51), an adjusting bolt (52), and a second bracket (53). The first bracket (51) and the second bracket (53) are L-shaped brackets with through holes provided thereon. The first bracket (51) is welded and fixed to the outer wall of the upper cone section, and the second bracket (53) is welded and fixed to the outer wall of the lower cone section. The through holes of the first bracket (51) and the second bracket (53) are aligned. A plurality of the first bracket (51) and the second bracket (53) are evenly distributed on the outer circumferences of the two cone sections. The adjusting bolt (52) passes through the through hole, and the adjusting bolt (52) fixes the first bracket (51) and the second bracket (53).

5. The steel silo hopper for a raw material yard according to claim 2, characterized in that: It comprises cast stone bricks (6) of varying thickness, wherein the cast stone bricks (6) of varying thickness are paved and fixed on the inner wall of the entire hopper.

6. The steel silo hopper for a raw material yard according to claim 5, characterized in that: The thickness of the cast stone bricks (6) of different thickness laid on each cone section is reduced by 5 cm from bottom to top to ensure that the inner wall surface of the hopper is flat and continuous.

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