A method for assembling and dividing a cone-shaped bucket in a large steel coal bucket

Abstract

A method for assembling and dividing a conical bucket in a large steel coal bucket comprises a conical bucket, wherein the upper end port of the conical bucket is a square structure, and the lower end port of the conical bucket is a circular structure; on the side wall of the conical bucket, four isosceles triangle structures are divided and obtained by taking the side of the square structure as the base and the point on the side of the circular structure as the vertex; and four fan-shaped structures are divided and obtained in the area between two adjacent isosceles triangle structures on the side wall of the conical bucket; the triangular structure is divided into a second triangular structure and a trapezoidal structure of smaller specifications, and the fan-shaped structure is divided into a fan-shaped structure and a curved-edge trapezoid of smaller specifications, thereby reducing the number of divisions while ensuring the structural strength after splicing, thereby reducing the division requirements and welding requirements; the splicing edges in the triangular structure and the fan-shaped structure are distributed in a horizontal and vertical grid, which is easy to disperse stress and reduce the risk of bulging.

Description

Technical Field

[0001] The invention relates to the technical field of cutting a square-top and conical bucket, and in particular to an assembling and dividing method of a square-top and conical bucket in a large steel coal bucket. Background Art

[0002] The large steel coal buckets currently on the market include the Tianfangdi conical bucket and the cone bucket, which are arranged in sequence from top to bottom. The lower port of the Tianfangdi conical bucket overlaps and is welded with the upper port of the cone bucket, and the cutting and welding processing methods of the Tianfangdi conical bucket completely rely on the manufacturing and processing experience of the personnel. For the components that are difficult to form manually in some parts, extensive construction methods such as fusing and post-pressing forming are adopted, which will cause problems such as misalignment and serious deformation of some components and excessive welds, which will lead to low project quality, long construction period, high rework rate, serious material waste, and very demanding technical requirements for on-site workers.

[0003] Publication No. CN108687489B discloses a method for manufacturing a large hopper. During pre-assembly, the parts are strictly assembled according to the axis, center line, elevation control line and process drawing. In this assembly method, there are many assembling blocks, and the cutting and welding requirements are high. The assembly is difficult and inefficient. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a method for assembling and dividing a square cone-shaped bucket in a large steel coal bucket, aiming to reduce the number of cut assembly blocks and lower the requirements for division and welding.

[0005] A method for assembling and dividing a conical bucket in a large steel coal bucket, comprising a conical bucket, an upper end port of the conical bucket being a square structure, a lower end port of the conical bucket being a circular structure, dividing and obtaining four isosceles triangle structures on the side wall of the conical bucket with the side edge of the square structure as the bottom edge and a point on the side edge of the circular structure as the vertex, and dividing and obtaining four fan-shaped structures in the area between two adjacent isosceles triangle structures on the side wall of the conical bucket;

[0006] A second triangular structure that coincides with the vertex and waist of the isosceles triangle structure is segmented at the vertex of the isosceles triangle structure, and a trapezoidal structure distributed left and right is segmented in the area between the base of the isosceles triangle structure and the base of the second triangular structure;

[0007] A second fan-shaped structure is cut out at the top corner of the fan-shaped structure, which coincides with the vertex and side of the fan-shaped structure. The area between the arc-shaped side of the fan-shaped structure and the arc-shaped side of the second fan-shaped structure is cut out to form left and right curved-edge trapezoidal structures, and the left and right sides of the curved-edge trapezoidal structures are straight edges. The arc-shaped sides of the second fan-shaped structure and the curved-edge trapezoidal structure are concentrically arranged. At the same time, at least four curved-edge trapezoidal structures are cut out of the fan-shaped structure, and the straight edges of the upper and lower adjacent curved-edge trapezoidal structures are respectively located on both sides of the center line of the fan-shaped structure.

[0008] The difference in vertical distance between the base of the second triangular structure and the arc side of the second fan-shaped structure at the nodes on the side of the isosceles triangular structure is greater than 20 cm; the total number of second triangular and trapezoidal structures segmented from the isosceles triangular structure is less than the total number of second fan-shaped structures and curved-edge trapezoidal structures segmented from the fan-shaped structure;

[0009] The segmentation method further comprises the following steps:

[0010] Step 101: Flatten the second fan-shaped structure and the curved trapezoidal structure to obtain a plane structure, arrange all the second triangular structures, trapezoidal structures and plane panels constituting the conical bucket on the rectangular raw material plate to be cut, and calculate the coverage rate of the rectangular plate;

[0011] Step 102: when the coverage is less than the set value, increase the total number of the second triangular structure, the trapezoidal structure, the second fan-shaped structure and the curved trapezoidal structure segmented from the isosceles triangular structure and the fan-shaped structure, and execute step 101; otherwise, execute step 103;

[0012] Step 103: Obtain the optimal segmentation of the conical buckets of the sky, the square and the earth.

[0013] Furthermore, the width of the curved trapezoidal structure is the radial distance between the upper and lower arc sides thereof, and the width of each curved trapezoid is the same.

[0014] Furthermore, the height range of the second triangular structure, the trapezoidal structure, the second fan-shaped structure and the curved trapezoidal structure is 1m~1.5m, and the length of the base of the second triangular structure, the trapezoidal structure, the second fan-shaped structure and the curved trapezoidal structure is less than 5m.

[0015] The beneficial effects of the present invention are as follows: by dividing the triangular structure into a second triangular structure and a trapezoidal structure of smaller specifications, and dividing the fan-shaped structure into a fan-shaped structure and a curved-edge trapezoid of smaller specifications, and making the nodes on the splicing seams far away from each other, the number of divisions is reduced while ensuring the structural strength after splicing, thereby reducing the division requirements and welding requirements; the splicing edges in the triangular structure and the fan-shaped structure are distributed in a horizontal and vertical grid, which is easy to disperse stress and reduce the risk of bulging. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the dividing line of the large-scale conical bucket in the present invention. DETAILED DESCRIPTION

[0017] The present invention is described in detail below in conjunction with the accompanying drawings. The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention. The directional terms such as left, middle, right, top, and bottom in the embodiments of the present invention are only relative concepts or are based on the normal use state of the product, and should not be considered as restrictive.

[0018] A method for assembling and dividing a conical bucket in a large steel coal bucket, such as Figure 1 As shown, it includes a conical bucket of the sky, square and earth. The upper end port of the conical bucket of the sky, square and earth is a square structure, and the lower end port of the conical bucket of the sky, square and earth is a circular structure. On the side wall of the conical bucket of the sky, square and earth, four isosceles triangle structures 1 are divided and obtained by taking the side of the square structure as the base and the point on the side of the circular structure as the vertex. On the side wall of the conical bucket of the sky, square and earth, the area between two adjacent isosceles triangle structures 1 is divided and obtained by four fan-shaped structures 2.

[0019] A second triangular structure 12 is segmented at the vertex of the isosceles triangular structure 1, which coincides with the vertex and waist of the isosceles triangular structure 1. The base of the second triangular structure 12 is located in the middle of the isosceles triangular structure 1. Trapezoidal structures 11 distributed left and right are segmented in the area between the base of the isosceles triangular structure 1 and the base of the second triangular structure 12.

[0020] A second fan-shaped structure 21 is segmented at the top corner of the fan-shaped structure 2 to coincide with the vertex and side of the fan-shaped structure 2, and a curved trapezoidal structure 22 distributed on the left and right is segmented in the area between the curved side of the fan-shaped structure 2 and the curved side of the second fan-shaped structure 21, and the left and right sides of the curved trapezoidal structure 22 are straight sides;

[0021] The following steps are also included:

[0022] Step 101: Flatten the second fan-shaped structure and the curved trapezoidal structure to obtain a plane structure, arrange all the second triangular structures, trapezoidal structures and plane panels that constitute the conical bucket on the rectangular raw material plate to be cut, and calculate the coverage rate of the rectangular plate; the coverage rate calculation formula is: Us=∑Sn / S 原 ;

[0023] The total number of the second triangular structure, the trapezoidal structure, the second fan-shaped structure and the curved trapezoidal structure is n, Sn: the area of ​​the plate numbered n; S 原 : The area of ​​the raw material board;

[0024] Step 102: when the coverage is less than the set value, which is 0.9 in this embodiment, the total number of the second triangular structure, the trapezoidal structure, the second fan-shaped structure and the curved trapezoidal structure divided from the isosceles triangular structure and the fan-shaped structure is increased, and step 101 is executed; otherwise, step 103 is executed;

[0025] Step 103: Obtain the optimal segmentation of the conical buckets of the sky, the square and the earth.

[0026] Among them, in order to improve the connection rigidity of the side between the fan-shaped structure 2 and the isosceles triangle 1, the vertical distance between the base of the second triangular structure 12 and the arc side of the second fan-shaped structure 21 at the node on the side of the isosceles triangle structure 1 is greater than 20 cm; because, when it is less than this value, the unstable factors near the node will be superimposed, making the connection relationship in the superimposed area unstable, thereby aggravating the aging and deformation of the area between the two nodes; since the isosceles triangle structure 1 is easy to divide and its structural strength is easy to ensure, in order to facilitate the arrangement of the above two nodes, the total number of second triangles 12 and trapezoidal structures 11 divided out of the isosceles triangle structure 1 is less than the total number of second fan-shaped structures 21 and curved trapezoidal structures 22 divided out of the fan-shaped structure 2.

[0027] In order to reduce the difficulty of forming and splicing the fan-shaped structure 2, the arc edges in the second fan-shaped structure 21 and the curved trapezoidal structure 22 are concentrically arranged, so as to facilitate forming; at the same time, at least four curved trapezoidal structures 22 are divided from the fan-shaped structure 2, and the straight edges of the upper and lower adjacent curved trapezoidal structures 22 are respectively located on both sides of the center line of the fan-shaped structure 2, so as to facilitate distinguishing the position of the curved trapezoidal structure 22 during assembly, so that the straight edges located at the center line do not form overlapping nodes, thereby improving the structural strength of the fan-shaped structure 2; in order to facilitate the forming of the curved trapezoidal structure 22 The height of the curved trapezoidal structure 22 is the radial distance between its upper and lower arc sides, and the height of each curved trapezoidal structure 22 is the same, which is convenient for the curved trapezoidal structure 22 to be formed in the same forming machine, thereby improving the forming efficiency and effect of the curved trapezoidal structure 22; the height range of the second triangular structure 12, the trapezoidal structure 11, the second fan-shaped structure 21 and the curved trapezoidal structure 22 is 1m~1.5m, and the bottom side lengths of the second triangular structure 12, the trapezoidal structure 11, the second fan-shaped structure 21 and the curved trapezoidal structure 22 are all less than 5m, which is convenient for workers to process and assemble.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for assembling and dividing a conical bucket in a large steel coal bucket, comprising a conical bucket, the upper end port of the conical bucket is a square structure, and the lower end port of the conical bucket is a circular structure, characterized in that: On the side wall of the Tianfangdi conical bucket, the side of the square structure is used as the base and the point on the side of the circular structure is used as the vertex to split and obtain four isosceles triangle structures, and on the side wall of the Tianfangdi conical bucket, the area between two adjacent isosceles triangle structures is split and obtain four fan-shaped structures; A second triangular structure that coincides with the vertex and waist of the isosceles triangle structure is segmented at the vertex of the isosceles triangle structure, and a trapezoidal structure distributed left and right is segmented in the area between the base of the isosceles triangle structure and the base of the second triangular structure; A second fan-shaped structure is cut out at the top corner of the fan-shaped structure, which coincides with the vertex and side of the fan-shaped structure. The area between the arc-shaped side of the fan-shaped structure and the arc-shaped side of the second fan-shaped structure is cut out to form left and right curved-edge trapezoidal structures, and the left and right sides of the curved-edge trapezoidal structures are straight edges. The arc-shaped sides of the second fan-shaped structure and the curved-edge trapezoidal structure are concentrically arranged. At the same time, at least four curved-edge trapezoidal structures are cut out of the fan-shaped structure, and the straight edges of the upper and lower adjacent curved-edge trapezoidal structures are respectively located on both sides of the center line of the fan-shaped structure. The difference in vertical distance between the base of the second triangular structure and the arc side of the second fan-shaped structure at the nodes on the side of the isosceles triangular structure is greater than 20 cm; the total number of second triangular and trapezoidal structures segmented from the isosceles triangular structure is less than the total number of second fan-shaped structures and curved-edge trapezoidal structures segmented from the fan-shaped structure; The segmentation method further comprises the following steps: Step 101: Flatten the second fan-shaped structure and the curved trapezoidal structure to obtain a plane structure, arrange all the second triangular structures, trapezoidal structures and plane panels constituting the conical bucket on the rectangular raw material plate to be cut, and calculate the coverage rate of the rectangular plate; Step 102: when the coverage is less than the set value, increase the total number of the second triangular structure, the trapezoidal structure, the second fan-shaped structure and the curved trapezoidal structure segmented from the isosceles triangular structure and the fan-shaped structure, and execute step 101; otherwise, execute step 103; Step 103: Obtain the optimal segmentation of the conical buckets of the sky, the square and the earth.

2. The method for assembling and dividing the large steel coal hopper according to claim 1 is characterized in that: The width of the curved trapezoidal structure is the radial distance between the upper and lower arc sides thereof, and the width of each curved trapezoid is the same.

3. The method for assembling and dividing the large steel coal hopper with a square top and a conical bottom according to claim 1, characterized in that: The height range of the second triangular structure, the trapezoidal structure, the second fan-shaped structure and the curved trapezoidal structure is 1m~1.5m, and the length of the base side of the second triangular structure, the trapezoidal structure, the second fan-shaped structure and the curved trapezoidal structure is less than 5m.

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