How to install steel spiral stairs
1. Installation of steel spiral staircase skeleton tray:
1, recheck the stair height to see if it is consistent with the drawing height.
2. Determine the installation position and hanging connection position of the column in the steel spiral staircase, and measure whether the distance from the column to the walls on both sides is consistent with the drawings.
3. Put the scattered steel spiral staircase tray on the ground. According to the size of the drawing, the stair keel connected with the drawing shall be set in sections as required, and the jacking wire may be fixed.
4. According to the drawing requirements, put the sleeve-type steel spiral staircase tray into the column from above, and guide the last section to fix the tray with the wall.
5. Adjust the direction of the steel spiral staircase tray until it is balanced and coordinated.
6. Fix the jacking wire on the tray of the steel spiral staircase and tighten it until the tray does not shake.
Second, the stair tread plate installation method:
1. Take out the tread board, determine the installation position of the stair tread board, and install it gradually from top to bottom. If there is a small pedal support, adjust the height of the small support, and then drill holes to connect the small support with the pedal without fixing.
2. Check and adjust the overlapping position, and check whether the overlapping data between pedals meet the design requirements.
3. After the correction, drill holes to fix the pedals of steel spiral stairs.
4. Follow the above steps, and finally all the screws can be fixed.
Three, the installation method of stair guardrail:
1, first determine the position of the column to be installed, and drill holes to install the column.
2. Fix the column base, loosen the accessories above, and install the wire drawing and handrail.
3. After the cables and handrails are installed and adjusted to the most suitable position, fix the screws on all fence posts.
Main manufacturing technology of steel spiral staircase
Making lofting
Setting out is the first working procedure in the production process. Only by ensuring the accuracy of the setting-out size can the subsequent construction orders be carried out smoothly and the accumulated errors in the subsequent processing procedures be avoided. Therefore, lofting quality is the key link to ensure the whole production quality. For lofting, we should pay attention to the following two points: first, we must be fully familiar with the drawings before lofting, and check the dimensions of each part in the drawings to ensure that it is checked correctly with civil engineering and other installation projects before construction. Construction shall be carried out in strict accordance with the proportion of design drawings and technical requirements, and the components shall be drawn according to the proportion of1:1; Second, after the samples are made, detailed records should be made.
nc cutting
The following problems should be paid attention to during NC cutting: 1) Make angle templates according to the requirements of blanking drawings, and put them into use only after passing the inspection; 2) When cutting, shrinkage allowance of cutting and welding and assembly error should be fully considered; 3) After programming, keep the cutting machine idling and ensure that its running track is consistent with the blanking size before cutting; 4) During cutting, parameters such as flame size and oxygen pressure should be adjusted according to the template thickness to ensure the smoothness of the incision.
panel
When assembling panels, the following issues should be fully considered: 1) The slit shrinkage should be fully considered, and the allowance should be properly released. Automatic slotting is generally 2? Mm or so, and the manual sewing is 3? Mm or so, the length of weld shrinkage should be determined according to the length of components. 2) Splicing welding shall be considered according to the requirements of welding grade in the drawings. Before welding, the weld should be cleaned, degreased and derusted to ensure the welding quality.
Assembly and welding
1) What is the size of the rotating ladder beam? mm×300？ mm×25？ Mm, in the process of welding to strengthen to prevent deformation of components, pay attention to the size and welding appearance in the process of processing. In order to facilitate field installation, it is required to disconnect at the platform (the position with elevation in Figure 1). Each platform is welded with the lower ladder beam in the workshop, and the platform is disconnected with the upper ladder beam, and then welded after on-site installation. According to the requirements, the spiral staircase should be transported in 9 sections, with 3 floors and 3 sections on each floor. The sealing plate above each platform (that is, the platform plate on the rest platform) should be handed over, and the sealing plate should be welded after the ladder beam is welded on site. In order to facilitate on-site installation and adjustment, the stairs on the second and third floors will be increased by 50? Mm allowance, which will increase the allowance from the plate ingredients, including the platform cover and bottom plate.
2) The webs of box girder are all arc-shaped, which need to be completed by a rounding machine. Because the spiral staircase is round, the radius of the web is relatively simple, and there are four kinds, two outer rings and two inner rings. The mold can be specially made, and each arc must be inspected by the mold. The circular winding machine must be wound several times, and the arc of each winding is small, so it is not allowed to form at one time. Excessive mechanical force will damage the machine. In the process of box girder assembly, some unqualified radians must be corrected by flame or machinery to ensure that the radians meet the requirements of the drawings.
Conclusion: The above is the installation method of steel spiral staircase introduced by Bian Xiao in detail. I believe that after reading it, you should have a certain understanding of the spiral staircase. You can find some professional installation companies to install steel spiral stairs. Last night's installation company won't have any other quality problems during installation. In addition, when choosing the material of steel spiral staircase, you can choose some good quality materials, which may be more expensive, but have a long service life. I hope Bian Xiao's suggestion can help you choose a suitable installation method for the new spiral staircase.
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