Manufacturing method for steel ladder around cylinder

A manufacturing method and steel ladder technology, which is applied in the field of steel structure manufacturing, can solve problems such as curvature of finished veneer, poor consistency of helix angle, long time of high-altitude operation, and influence on the manufacturing accuracy of the whole ladder, etc.

Active Publication Date: 2017-01-04
CHINA 19TH METALLURGICAL CORP
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

In this manufacturing process, when the plate rolling operation is implemented, the curvature and helix angle of the finished veneer are not consistent due to the different feeding angles of the veneer on the plate rolling machine.
The curvature and helix angle of the finished veneer are the main factors affecting the manufacturing accuracy of the support plate, which in turn affects the manufacturing accuracy of the whole ladder
[0006] In addition, when the whole ladder is manufactured, the high-altitude operation takes a long time and the safety factor is low

Method used

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  • Manufacturing method for steel ladder around cylinder
  • Manufacturing method for steel ladder around cylinder

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing, the present invention will be further described:

[0034] see figure 1 , figure 2 As shown, the manufacture method of this cylindrical steel ladder 1 comprises the following steps:

[0035] Fabrication of support plates, including the following processes:

[0036] a. Lay at least two plates that meet the design requirements and use them to make the inner support plate 3 and the outer support plate 4 respectively. Because the width of the inner support plate 3 and the outer support plate 4 is the same, but the length of the superimposed drawing method of the outer support plate 4 is greater than the length of the superimposed drawing method of the inner support plate 3, so the effective length for making the outer support plate plate should be greater than that of the outer support plate. In order to make the effective length of the inner support board plate 6, the effective width of the two plates is the same.

[003...

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Abstract

The invention relates to the field of steel structure manufacturing, and provides a manufacturing method for a steel ladder around a cylinder. When the manufacturing method for the steel ladder around the cylinder is used for manufacturing the steel ladder around the cylinder, the accuracy of the steel ladder around the cylinder can be better guaranteed, the time for working high above the ground is shortened, and safety factors are improved; a method that an unfolding line of a ladder beam is marked on an overall panel, and interrupted cutting and overall plate curling are carried out is adopted, ladder sections are assembled on the ground according to the size of a real sample, and steps and guard bars are installed according to needs; and step plates are installed on a stacking support plate according to sets from the upper layer to the lower layer on the ground, and a method that cutting separation is carried out on one layer once installation is completed on the layer is adopted for manufacturing.

Description

technical field [0001] The invention relates to the field of steel structure production, and provides a method for manufacturing a steel ladder around a cylinder. Using the method for making a steel ladder around a cylinder to make a steel ladder around a cylinder can better ensure the accuracy of the steel ladder around a cylinder and reduce the time for working at heights , improve the safety factor. Background technique [0002] In the manufacture of steel structures, it is often encountered in the manufacture of spiral staircases surrounding a cylinder (which can be referred to as a steel ladder around a cylinder for short). see figure 1 As shown, the circular-cylindrical steel ladder 1 is based on a cylinder 2 with a radius of R, and is fixedly connected to the outer surface of the cylinder 2, spirally rising. This cylindrical steel ladder 1 includes spirally rising inner support plates 3 and outer support plates 4 on both sides, and a step plate 5 fixedly connected b...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 叶金林
Owner CHINA 19TH METALLURGICAL CORP
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