Bowl-buckle steel pipe scaffolding is composed of steel pipe vertical poles, horizontal bars, bowl-buckle joints, etc. Its basic structure and erection requirements are similar to those of fastener-type steel pipe scaffolding. The main difference lies in the bowl-buckle joints. The bowl buckle joint is composed of an upper bowl buckle, a lower bowl buckle, a crossbar joint, and a limit pin of the upper bowl buckle. Weld the limit pins of the lower bowl buckle and the upper bowl buckle on the vertical pole, and insert the upper bowl buckle into the vertical pole. The solder plugs on crossbars and diagonal bars. When assembling, insert the horizontal bar and diagonal bar into the lower bowl buckle, press and rotate the upper bowl buckle, and use the limit pin to fix the upper bowl.
Joint erection of bowl-buckle steel pipe scaffolding erection
1) The joint is the connecting device between the vertical pole and the horizontal and inclined poles. The joints should be locked tightly. When erecting, first place the upper bowl buckle on the limit pin, and insert the horizontal bar, diagonal rod, and other joints into the lower bowl buckle, so that the arc surface of the joint is closely attached to the vertical pole. After all the joints are inserted, put the upper bowl buckle down. , and use a hammer to hit the convex head of the upper bowl buckle clockwise along the tangent line until the upper bowl buckle is clamped by the limit pin and stops rotating.
2) If it is found that the upper bowl buckle is not tight, or the limit pin cannot enter the spiral surface of the upper bowl buckle, check whether the vertical pole and the horizontal bar are vertical and whether the two adjacent bowl buckles are on the same horizontal plane (that is, the horizontal bar Whether the horizontality meets the requirements); whether the coaxially of the lower bowl buckle and the vertical pole meets the requirements; whether the verticality of the horizontal plane of the lower bowl buckle and the axis of the vertical pole meets the requirements; whether the horizontal bar joint and the horizontal bar are deformed; whether the horizontal bar joint Check whether the center line of the arc surface is perpendicular to the axis of the crossbar; whether there is a mortar and other debris in the lower bowl buckle; if it is due to assembly, it should be locked after adjustment; if it is due to the rod itself, it should be dismantled and sent for repair.
Requirements for the erection of bowl-buckle type scaffolding: The horizontal distance between the bowl-buckle type steel pipe scaffolding columns is 1.2 m, and the longitudinal distance can be 1.2 m; 1.5 m; 1.8 m; 2.4 m according to the scaffold load, and the step distance is 1.8 m, 2.4 m. When erecting, the joints of the vertical poles should be staggered. The first layer of vertical poles should be staggered with 1.8 m and 3.0 m long poles. 3.0 m long poles should be used for the upper floors, and 1.8 m and 3.0 m long poles should be used for the top layer. Leveling. The vertical deviation of scaffolds with a height of less than 30 m should be controlled within 1/200, and the vertical deviation of scaffolds with a height of more than 30 m should be controlled within 1/400~1/600. The total height vertical deviation should not be greater than 100 mm.
When the erection height H is less than or equal to 20m, the floor-standing bowl-buckle scaffolding can be erected as normal scaffolding. When the erection height is H＞20m and the formwork support system is ultra-high, overweight, or large-span, a special construction design plan must be developed and structural analysis and calculation must be carried out.
The bowl buckle node is composed of an upper bowl buckle, a lower bowl buckle, a vertical pole, a crossbar joint, and an upper bowl buckle limit pin. The bowl buckle node of the scaffolding pole should be set according to the 0.6m module.
Safety technical requirements for dismantling bowl-buckle steel pipe scaffolding
(1) After the scaffolding is used, formulate a dismantling plan. Before dismantling, a comprehensive inspection of the scaffolding should be conducted, all excess objects should be removed, and a dismantling area should be set up to prohibit entry by unrelated personnel.
(2) The demolition sequence is from top to bottom, layer by layer, and the upper and lower floors are not allowed to be demolished at the same time.
(3) The diaphragm braces can only be dismantled when the floor is reached. It is strictly prohibited to dismantle the diaphragm braces before dismantling the structures.
(4) The dismantled components should be hoisted with a spreader or handed down manually. Throwing is strictly prohibited.
(5) The dismantled components should be classified and stacked in time for transportation and storage.
Post time: May-09-2024