CN114818096B - Manufacturing method of rotary steel ladder of dust remover based on BIM technology - Google Patents

Abstract

The invention discloses a method for manufacturing a rotary steel ladder of a dust remover based on a BIM (building information modeling) technology. The method comprises the following steps: s1, drawing a three-dimensional model of the rotary steel ladder by using TEKLA software; s2, switching the three-dimensional model into a vertical map, and measuring the length of a line segment L between corresponding bisectors; s3, switching the three-dimensional model into a top view, wherein the length between the intersection points of the perpendicular lines at the equal dividing points of the straight line segments HK and the arc line segments HK is X; s4, combining the elevation view and the top view to form a combined lofting view; s5, lofting on the platform according to the combined lofting drawing; s6, rounding the inner ladder beam and the outer ladder beam by using a roller bed; s7, drawing an assembly line of the pedals on the inner ladder beam and the outer ladder beam; s8, welding the pedal with the inner side ladder beam; and S9, hoisting the outer ladder beam to the assembled pedal, and welding the outer ladder beam and the pedal according to the assembly line position of the outer ladder beam. The invention saves the technical measures and materials of the bracket, improves the construction efficiency and increases the operation safety.

Description

Manufacturing method of rotary steel ladder for dust collector based on BIM technology

technical field

The invention relates to the construction of building steel structures, in particular to a manufacturing method of a rotary steel ladder for a dust collector based on the BIM technology.

Background technique

During the installation and construction of the dust collector, due to the large rotation radius of the rotating steel ladder on the outside of the dust collector, it rises in a spiral shape and the rising height is high. Assembly and welding, the material of the ladder beam is channel steel or steel plate.

At present, the traditional method of processing and manufacturing the rotary steel ladder of the dust collector is: in the elevation view of each different component of the CAD drawing, select several points (generally no less than 4) on the inner and outer sides of the lower flange plate as the production control points Measure its elevation, and then measure the arc length between the projected corresponding position of each control point on the plane of the lower flange plate and the projection of the end plane of the lower flange plate, and start to draw on the production platform according to the measured value. The inner and outer projection lines of the lower flange plate are welded with angle steel and channel steel to form a bracket according to the position of the control point on the component to perform the spatial positioning of the control point, and then rotate the steel on the tire tool composed of different control point brackets of the same component. The assembly and welding of the box beam of the ladder steel structure requires vertical assembly and welding of the rotating steel ladder. Because the top of the rotating steel ladder has a high vertical height from the ground (usually more than 2 meters), the technical It consumes a lot of materials, and it is difficult to assemble and weld during production, which affects the quality of the product and poses a greater safety hazard.

The Chinese invention patent application with the application number of CN202011006518.8 discloses a hyperbolic component modeling method in TEKLA software. The invention application can only be used for the modeling of hyperbolic components, and cannot be used for the production of spirally rising rotating steel ladders.

SUMMARY OF THE INVENTION

The present invention aims to solve the above technical problems, and provides a method for manufacturing a rotary steel ladder for a dust collector based on BIM technology, which saves costs and improves construction efficiency.

The present invention solves its technical problem, and the technical scheme adopted is:

A method for manufacturing a rotary steel ladder for a dust collector based on BIM technology, comprising the following steps:

S1. According to the CAD design drawings of the rotating steel ladder, use BIM technology to use TEKLA software to draw the three-dimensional model of the rotating steel ladder;

S2. Switch the three-dimensional model of the rotating steel ladder to an elevation view, connect the lowest point E and the highest point F of the inner ladder beam of the rotating steel ladder, use EF as the hypotenuse of the right triangle to make a right triangle EFG, and connect the right triangle EFG to the The hypotenuse EF and the right-angled side EG in the horizontal direction are divided into multiple points, and the corresponding bisected points are connected with straight lines, and the length of the line segment L between the corresponding bisected points is measured. The length of the line segment L corresponds to the inner ladder beam. the actual height of the location;

S3. Switch the three-dimensional model of the rotating steel ladder to a top view. The horizontal projection line of the center line of the inner ladder beam is an arc segment HK, and the connecting end point H and the end point K form a straight line segment HK, and the length of the straight line segment HK is equal to the length of the right triangle EFG. The length of the right-angle side EG, the straight line segment HK is divided into multiple equal points, the number of bisected points is equal to the number of bisected points in step S2, and the vertical line of the straight line segment HK is made through each bisected point, and the straight line segment HK is passed through. The length between the intersection of the vertical line at the bisector and the arc segment HK is X, the distance between the adjacent bisectors of the straight segment HK, and the distance between the two ends of the straight segment HK and its immediately adjacent bisectors. distance is Y;

S4. Combine the elevation view and the top view of the inner ladder beam to form a combined stakeout diagram. The right-angled side EG of the right triangle EFG in the elevation view coincides with the straight line segment HK in the top view, and draw the center line of the inner ladder beam and the outer ladder beam On the projection line M on the façade, the intersection of the projection line M and the extension line of the line segment L is Z, marking the direction of the curved circle of the rotating steel ladder;

S5. Stake out on the platform according to the combined stakeout diagram, and set up a horizontal welding bracket for the inner ladder beam. The bracket includes two uprights and a crossbar between the two uprights. A bracket is set at each Z point, and the crossbar spans the line segment. EF is parallel to the line segment L, the height of the top surface of each crossbar is the X value of the corresponding point, the center of the crossbar corresponds to the Z point, and the two ends of the crossbar are welded with uprights respectively;

S6. Use a rolling bed to round the inner ladder beam and the outer ladder beam;

S7. Place the curved inner ladder beam and the outer ladder beam respectively on the bracket for trimming, and draw the assembly line of the pedal on the inner ladder beam and the outer ladder beam;

S8. Place the pedal on the inner ladder beam according to the position of the assembly line, and weld the pedal and the inner ladder beam;

S9, hoist the outer ladder beam to the assembled pedal, and weld the outer ladder beam and the pedal according to the position of the assembly line of the outer ladder beam.

Compared with the prior art, the present invention adopting the above-mentioned technical scheme has the following beneficial effects:

The invention saves the technical measures and materials of the bracket, reduces the construction cost, shortens the production period, improves the construction efficiency, increases the operation safety, and improves the production precision of the rotary steel ladder of the dust collector.

Further, the optimization scheme of the present invention is:

In step S2 and step S3, the dividing points are at least three points.

Description of drawings

Fig. 1 is the three-dimensional model diagram of the rotating steel ladder of the embodiment of the present invention;

Fig. 2 is the elevation view of the inner ladder beam of the embodiment of the present invention equally divided;

Fig. 3 is the top plan view of the inner side ladder beam of the embodiment of the present invention;

Fig. 4 is the combined set-out diagram of the embodiment of the present invention;

5 is a perspective view of a stent according to an embodiment of the present invention;

Fig. 6 is the perspective view of the support erection of the embodiment of the present invention;

7 is a schematic diagram of the erection of an inner ladder beam according to an embodiment of the present invention;

8 is a schematic diagram of the pedal assembly of the embodiment of the present invention;

FIG. 9 is a schematic diagram of the assembly of an outer ladder beam according to an embodiment of the present invention.

In the figure: rotating steel ladder 1; inner ladder beam 1-1; outer ladder beam 1-2; pedal 1-3; first bracket 2; left column 2-1; cross bar 2-2; right column 2-3; The second bracket 3 ; the third bracket 4 .

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

The present embodiment is a method for manufacturing a rotary steel ladder for a dust collector based on BIM technology, which is performed according to the following steps:

S1. According to the CAD design drawings of the revolving steel ladder 1, use BIM technology to use TEKLA software to draw the three-dimensional model of the revolving steel ladder 1 (as shown in Figure 1). The revolving steel ladder 1 is mainly composed of inner ladder beam 1-1 and outer ladder beam 1. -2 and three pedals 1-3, the inner ladder beam 1-1 and the outer ladder beam 1-2 are both channel steel and the notches are arranged opposite to each other;

S2. Switch the 3D model to an elevation view (as shown in Figure 2), connect the lowest point E and the highest point F of the inner ladder beam 1-1 of the rotating steel ladder 1, and use EF as the hypotenuse of the right triangle to make a right triangle EFG , divide the hypotenuse EF of the right-angled triangle EFG and the right-angled side EG in the horizontal direction into three equal parts, and divide them into four equal parts. The lengths L ₁ , L ₂ and L ₃ of the line segments between the bisectors, the length of the right-angled side GF of the right triangle is L ₄ , and L ₁ , L ₂ , L ₃ and L ₄ are the corresponding positions of the inner ladder beams 1-1 the actual height;

S3. Switch the three-dimensional model to the top view (as shown in Figure 3), the horizontal projection line of the center line of the inner ladder beam 1-1 is the arc segment HK, and the connecting end point H and the end point K form a straight line segment HK, and the length of the straight line segment HK Equal to the length of the right-angled side EG of the right-angled triangle EFG, divide the straight line segment HK into 3 equal points, and draw a vertical line of the straight line segment HK through each bisected point. The lengths between the vertical line at the bisector and the intersection of the arc segment HK are X ₁ , X ₂ and X ₃ in sequence, and the distance between the endpoint H of the straight line segment HK and its immediate bisector is Y ₁ , the straight line The distances between the adjacent bisectors of the segment HK are Y ₂ and Y ₃ in turn, and the distance between the endpoint K of the straight line segment HK and its immediately adjacent bisectors is Y ₄ ;

S4. Combine the elevation view and the top view of the inner ladder beam 1-1 to form a combined stakeout view (as shown in Figure 4). The right-angled side EG of the right-angled triangle EFG in the elevation view coincides with the straight line segment HK in the top view, and the inner side is drawn. The projection line M of the center line of the ladder beam 1-1 and the outer ladder beam 1-2 on the façade, the intersection point of the projection line M and the extension line of the line segment L is Z ₁ , Z ₂ and Z ₃ in turn, marking the rotation The curved direction of the steel ladder 1;

S5. Stake out on the platform according to the combined stakeout diagram (as shown in Figure 6), and set up the horizontal welding brackets for the inner ladder beams 1-1. There are three horizontal welding brackets, which are the first brackets 2 with the same structure ( 5), the second bracket 3 and the third bracket 4, the first bracket 2 is mainly composed of a left column 2-1, a cross bar 2-2 and a right column 2-3, the cross bar 2-2 is located in the left column 2 Between -1 and the right column 2-3, the material of the left column 2-1 and the right column 2-3 is angle steel, and the cross-section of the cross bar 2-2 is rectangular. Each Z point is provided with a bracket, the first bracket 2, the second bracket 3 and the third bracket 4 are located at the Z ₁ point, the Z ₂ point and the Z ₃ point respectively, and the cross bar 2-2 spans the line segment EF and is parallel to the line segment L , the height of the top surface of each crossbar 2-2 is the X value of its corresponding point, and the heights of the top surfaces of the crossbars 2-2 of the first bracket 2, the second bracket 3 and the third bracket 4 are respectively X ₁ , X ₂ and X ₃ , the centers of the cross bars 2-2 of the first bracket 2, the second bracket 3 and the third bracket 4 correspond to points Z ₁ , Z ₂ and Z ₃ respectively, and the cross bars 2- After the height and position of ;

S6. Use a rolling bed to make a curved circle on the inner ladder beam 1-1 and the outer ladder beam 1-2;

S7. Place the curved inner ladder beam 1-1 and the outer ladder beam 1-2 on the three brackets respectively for trimming, and draw on the webs of the inner ladder beam 1-1 and the outer ladder beam 1-2 Assembly line N of pedals 1-3 (shown in Figure 7);

S8. Place the pedals 1-3 on the web of the inner ladder beam 1-1 according to the position of the assembly line N, and weld the pedals 1-3 and the inner ladder beam 1-1;

S9, hoist the outer ladder beam 1-2 to the assembled pedal 1-3, and weld the outer ladder beam 1-2 and the pedal 1-3 according to the position of the assembly line N.

The invention saves the technical measures and materials of the bracket, reduces the construction cost, shortens the production period, improves the construction efficiency, increases the operation safety, and improves the production precision of the rotary steel ladder of the dust collector.

The above descriptions are only preferred feasible embodiments of the present invention, and are not intended to limit the scope of rights of the present invention. Any equivalent structural changes made by using the contents of the description and accompanying drawings of the present invention are included in the scope of rights of the present invention. .

Claims (2)

1. A method for making a rotary steel ladder for a dust collector based on BIM technology, comprising the following steps: S1. According to the CAD design drawings of the rotating steel ladder, use BIM technology to use TEKLA software to draw the three-dimensional model of the rotating steel ladder; S2. Switch the three-dimensional model of the rotating steel ladder to an elevation view, connect the lowest point E and the highest point F of the inner ladder beam of the rotating steel ladder, use EF as the hypotenuse of the right triangle to make a right triangle EFG, and connect the right triangle EFG to the The hypotenuse EF and the right-angled side EG in the horizontal direction are divided into multiple points, and the corresponding bisected points are connected with straight lines, and the length of the line segment L between the corresponding bisected points is measured. The length of the line segment L corresponds to the inner ladder beam. the actual height of the location; S3. Switch the three-dimensional model of the rotating steel ladder to a top view. The horizontal projection line of the center line of the inner ladder beam is an arc segment HK, and the connecting end point H and the end point K form a straight line segment HK, and the length of the straight line segment HK is equal to the length of the right triangle EFG. The length of the right-angled side EG, the straight line segment HK is divided into multiple points, and the number of bisected points is equal to the number of bisected points in step S2, and the vertical lines of the straight line segment HK are drawn through each bisected point, and each vertical line It intersects with the arc segment HK, the length between the vertical line at the bisector point of the straight segment HK and the intersection point of the arc segment HK is X, the distance between the adjacent bisector points of the straight segment HK, the length of the straight segment HK The distance between the two end points and their immediately adjacent bisector points is Y; S4. Combine the elevation view and the top view of the inner ladder beam to form a combined stakeout diagram. The right-angled side EG of the right triangle EFG in the elevation view coincides with the straight line segment HK in the top view, and draw the center line of the inner ladder beam and the outer ladder beam On the projection line M on the façade, the intersection of the projection line M and the extension line of the line segment L is Z, marking the direction of the curved circle of the rotating steel ladder; S5. Stake out on the platform according to the combined stakeout diagram, and set up a horizontal welding bracket for the inner ladder beam. The bracket includes two uprights and a crossbar between the two uprights. A bracket is set at each Z point, and the crossbar spans the line segment. EF is parallel to the line segment L, the height of the top surface of each crossbar is the X value of the corresponding point, the center of the crossbar corresponds to the Z point, and the two ends of the crossbar are welded with uprights respectively; S6. Use a rolling bed to round the inner ladder beam and the outer ladder beam; S7. Place the curved inner ladder beam and the outer ladder beam respectively on the bracket for trimming, and draw the assembly line of the pedal on the inner ladder beam and the outer ladder beam; S8. Place the pedal on the inner ladder beam according to the position of the assembly line, and weld the pedal and the inner ladder beam; S9, hoist the outer ladder beam to the assembled pedal, and weld the outer ladder beam and the pedal according to the position of the assembly line of the outer ladder beam. 2 . The method for manufacturing a rotary steel ladder for a dust collector based on BIM technology according to claim 1 , characterized in that: in step S2 and step S3 , the dividing points are at least three points. 3 .

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