阅读说明：本技术 大口径弯扭钢管柱拼接方法 (Large-caliber bending steel pipe column splicing method ) 是由 陈宇斌 孙海 孙占华 吴鹏 王耀祖 于 2021-07-15 设计创作，主要内容包括：本发明涉及金属构件安装领域,具体是一种大口径弯扭钢管柱拼接方法。包括如下步骤：根据设计图在电脑上利用CAD绘制大口径弯扭钢管柱立体模型；以相邻的两个钢管的中心线相交得出的平面作为拼接平台的水平基准面,对接的钢管在该平面的投影变成两个对接的梯形,按照设计标图标注的各控制点尺寸,在拼接平台上放出各控制点的位置,连接各点就得到对接钢管在拼装平台的实际投影角度及尺寸；在拼接平台上放好地样,点焊固定；将钢管固定后焊接。通过将扭曲的大口径钢管柱拼接的空间角度很好地转化为平面角度,降低大口径弯扭钢管柱的制作难度,制作的精度更加准确,效率更高。(The invention relates to the field of metal component installation, in particular to a large-caliber crankle steel pipe column splicing method. The method comprises the following steps: drawing a large-caliber bending-torsion steel pipe column three-dimensional model on a computer by utilizing CAD according to a design drawing; taking a plane obtained by intersecting central lines of two adjacent steel pipes as a horizontal reference plane of the splicing platform, changing the projection of the butted steel pipes on the plane into two butted trapezoids, releasing the positions of control points on the splicing platform according to the sizes of the control points marked by a design map, and connecting the points to obtain the actual projection angles and sizes of the butted steel pipes on the splicing platform; placing a ground sample on the splicing platform, and fixing by spot welding; and fixing the steel pipe and then welding. The space angle formed by splicing the twisted large-caliber steel pipe columns is well converted into a plane angle, the manufacturing difficulty of the large-caliber twisted steel pipe columns is reduced, the manufacturing precision is more accurate, and the efficiency is higher.)

1. The large-caliber crankle steel pipe column splicing method is characterized by comprising the following steps of:

step 1, drawing a large-caliber bent steel pipe column three-dimensional model on a computer by utilizing CAD according to a design drawing;

step 2, determining a plane principle according to two crossed straight lines, wherein the central line (3) of the adjacent steel pipe (1) is crossed with the central line (4) of the steel pipe (2) to obtain a plane, the plane is used as a horizontal reference plane of a splicing platform, the projection of the steel pipe (1) and the steel pipe (2) on the plane is changed into two butted trapezoids, two end points of the crossed line of the two trapezoids are projection points of a high point (5) and a low point (6) of the butt joint surface of the steel pipe (1) and the steel pipe (2), and the central line of the high point and the low point of the butt joint surface of a single section of steel pipe is marked in the blanking process;

step 3, drawing a perpendicular line from the end point of the center line 4 at the far end of the steel pipe (2) to the extension line of the center line 3 of the steel pipe (1), releasing the position of each control point on the steel platform according to the size of each control point marked by a design map, and connecting each point to obtain the actual projection angle and size of the steel pipe (1) and the steel pipe (2) on the assembly platform;

step 4, laying a ground sample on the splicing platform, fixing a pipe connecting jig frame (7) along the projection line of the central lines of the projections of the steel pipes (1) and (2) on the splicing platform, and fixing by spot welding;

step 5, placing the steel pipe (1) and the steel pipe (2) on a splicing platform, enabling projections of horizontal center lines of two end faces of the steel pipe (1) and the steel pipe (2) to coincide with a pay-off end line on a ground sample, fixing the steel pipe (1) and the steel pipe (2) and then welding;

and 6, installing the next section of steel pipe, continuously taking the plane determined by the center line of the section of steel pipe and the adjacent steel pipe as the horizontal reference plane of the splicing platform, and repeating the steps 2 to 5 to finish the splicing of the whole steel pipe column.

Technical Field

The invention relates to the field of metal component installation, in particular to a large-caliber crankle steel pipe column splicing method.

Background

Traditional large-caliber bend-torsion steel pipe column splicing method mainly controls and inspects the angle of bend-torsion steel pipe column splicing by a manufacturing sample plate, cannot accurately control the space angle and the overall size of the large-caliber bend-torsion steel pipe column, is rough in manufacturing method, needs to manufacture a large number of sample plates to measure the angle of a connecting pipe, is inaccurate in measuring size, large in error, time-consuming and labor-consuming, and directly influences the control of the overall quality of the bend-torsion steel pipe column.

Disclosure of Invention

The invention aims to solve the problems, and provides a large-caliber crankle steel pipe column splicing method which can accurately control the material receiving size and control accuracy of the crankle steel pipe column.

The invention solves the problems and adopts the technical scheme that:

a large-caliber bending-twisting steel pipe column splicing method comprises the following steps:

step 1, drawing a large-caliber bent steel pipe column three-dimensional model on a computer by utilizing CAD according to a design drawing;

step 2, determining a plane principle according to two crossed straight lines, wherein the central line 3 of the adjacent steel pipe 1 is crossed with the central line 4 of the adjacent steel pipe 2 to obtain a plane, the plane is used as a horizontal reference plane of the splicing platform, the projection of the steel pipe 1 and the steel pipe 2 on the plane is changed into two butted trapezoids, two end points of the crossed line of the two trapezoids are projection points of a high point 5 and a low point 6 of the butt joint surface of the steel pipe 1 and the steel pipe 2, and the central line of the high point and the low point of the butt joint surface of a single section of steel pipe is marked in the blanking process;

step 3, making a perpendicular line from the end point of the central line 4 at the far end of the steel pipe 2 to the extension line of the central line 3 of the steel pipe 1, releasing the position of each control point on the steel platform according to the size of each control point marked by a design map, and connecting each point to obtain the actual projection angle and size of the steel pipe 1 and the steel pipe 2 on the assembly platform;

step 4, well placing a sample on the splicing platform, fixing a pipe connecting jig frame 7 along the projection line of the central line of the projections of the steel pipe 1 and the steel pipe 2 on the splicing platform, and fixing by spot welding;

step 5, placing the steel pipe 1 and the steel pipe 2 on a splicing platform, enabling projections of horizontal center lines of two end faces of the steel pipe 1 and the steel pipe 2 to coincide with a pay-off end line on a ground sample, fixing the steel pipe 1 and the steel pipe 2, and then welding;

and 6, installing the next section of steel pipe, continuously taking the plane determined by the center line of the section of steel pipe and the adjacent steel pipe as the horizontal reference plane of the splicing platform, and repeating the steps 2 to 5 to finish the splicing of the whole steel pipe column.

Compared with the prior art, the invention adopting the technical scheme has the outstanding characteristics that:

the space angle formed by splicing the twisted large-caliber steel pipe columns is well converted into a plane angle, and then the plane angle is processed and manufactured, so that the manufacturing difficulty of the large-caliber bent and twisted steel pipe columns is reduced, the construction method is easy and simple to operate, batch production can be realized for pipe butt joint at the same angle, the manufacturing precision is more accurate, and the efficiency is higher.

Drawings

FIG. 1 is a schematic top view of an overall structure of an embodiment of the present invention;

FIG. 2 is a schematic top view of a partial structure according to an embodiment of the present invention;

in the figure: a steel pipe 1; a steel pipe 2; the central line 3 of the steel pipe 1; the central line 4 of the steel pipe 2; butt joint surface height point 5; butt joint face low point 6; and (7) taking over the pipe clamping fixture.

The specific implementation mode is as follows:

the invention will be further illustrated by the following examples, which are intended only for a better understanding of the present invention and therefore do not limit the scope of the invention.

Referring to fig. 1 and 2, a large-caliber crankle steel pipe column splicing method comprises the following steps:

step 1, drawing a large-caliber bent steel pipe column three-dimensional model on a computer by utilizing CAD according to a design drawing;

step 2, determining a plane principle according to two crossed straight lines, wherein the central line 3 of the adjacent steel pipe 1 is crossed with the central line 4 of the adjacent steel pipe 2 to obtain a plane, the plane is used as a horizontal reference plane of the splicing platform, the projection of the steel pipe 1 and the steel pipe 2 on the plane is changed into two butted trapezoids, two end points of the crossed line of the two trapezoids are projection points of a high point 5 and a low point 6 of the butt joint surface of the steel pipe 1 and the steel pipe 2, and the central line of the high point and the low point of the butt joint surface of a single section of steel pipe is marked in the blanking process;

step 3, making a perpendicular line from the end point of the central line 4 at the far end of the steel pipe 2 to the extension line of the central line 3 of the steel pipe 1, releasing the position of each control point on the steel platform according to the size of each control point marked by a design map, and connecting each point to obtain the actual projection angle and size of the steel pipe 1 and the steel pipe 2 on the assembly platform;

step 4, well placing a sample on the splicing platform, fixing a pipe connecting jig frame 7 along the projection line of the central line of the projections of the steel pipe 1 and the steel pipe 2 on the splicing platform, and fixing by spot welding;

step 5, placing the steel pipe 1 and the steel pipe 2 on a splicing platform, enabling the projections of the horizontal center lines of the two end surfaces of the steel pipe 1 and the steel pipe 2 to coincide with the pay-off lines on the ground sample, fixing the steel pipe 1 and the steel pipe 2, and then welding;

and 6, installing the next section of steel pipe, continuously taking the plane determined by the center line of the section of steel pipe and the adjacent steel pipe as the horizontal reference plane of the splicing platform, and repeating the steps 2 to 5 to finish the splicing of the whole steel pipe column.

Compared with the prior art, the invention adopting the technical scheme has the outstanding characteristics that:

the space angle formed by splicing the twisted large-caliber steel pipe columns is well converted into a plane angle, and then the plane angle is processed and manufactured, so that the manufacturing difficulty of the large-caliber bent and twisted steel pipe columns is reduced, the construction method is easy and simple to operate, batch production can be realized for pipe butt joint at the same angle, the manufacturing precision is more accurate, and the efficiency is higher.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined in the appended claims.