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A platform for research: civil engineering, architecture and urbanism
Composite spray head of gas hood method concrete spraying construction mechanical equipment and construction method
The invention discloses a composite nozzle of gas hood method concrete spraying mechanical equipment, and solves the problems of high construction cost and resource waste caused by adopting a single nozzle at present. The spray head comprises a spray head body, the outer side of the spray head body is coated with a compressed air outer spray pipe, and the compressed air outer spray pipe and the spray head body are coaxial. Compared with a single-structure spray head, the composite spray head has the advantages that sprayed concrete can be sealed in the gas hood, loss of the concrete due to diffusion and rebound falling is effectively reduced, and under the same condition, the concrete rebound rate gt of a dry spraying method of an existing single-structure spray head is achieved; the springback rate of the wet-spraying concrete is gt; the springback rate of the wet spraying method of the nozzle with the composite structure can be reduced to be within 5%, and the comprehensive cost can be reduced by 10% or above.
气罩法喷射混凝土机械设备复合喷头，解决现在采用单一喷头造成施工成本高，资源浪费的问题。其包括喷头本体，喷头本体外侧包覆有压缩空气外喷管，压缩空气外喷管与喷头本体同轴心。本发明的复合型喷头，相比单一型结构喷头，可将喷射出的混凝土封闭在气罩内，有效减少混凝土因扩散和反弹掉落损耗，同种条件下，现有单一型结构喷头干喷法混凝土回弹率>30%，湿喷法混凝土回弹率>20%，本发明的复合型结构喷头湿喷法回弹率可降低到5%以内，综合成本可降低10%以上。
Composite spray head of gas hood method concrete spraying construction mechanical equipment and construction method
The invention discloses a composite nozzle of gas hood method concrete spraying mechanical equipment, and solves the problems of high construction cost and resource waste caused by adopting a single nozzle at present. The spray head comprises a spray head body, the outer side of the spray head body is coated with a compressed air outer spray pipe, and the compressed air outer spray pipe and the spray head body are coaxial. Compared with a single-structure spray head, the composite spray head has the advantages that sprayed concrete can be sealed in the gas hood, loss of the concrete due to diffusion and rebound falling is effectively reduced, and under the same condition, the concrete rebound rate gt of a dry spraying method of an existing single-structure spray head is achieved; the springback rate of the wet-spraying concrete is gt; the springback rate of the wet spraying method of the nozzle with the composite structure can be reduced to be within 5%, and the comprehensive cost can be reduced by 10% or above.
气罩法喷射混凝土机械设备复合喷头，解决现在采用单一喷头造成施工成本高，资源浪费的问题。其包括喷头本体，喷头本体外侧包覆有压缩空气外喷管，压缩空气外喷管与喷头本体同轴心。本发明的复合型喷头，相比单一型结构喷头，可将喷射出的混凝土封闭在气罩内，有效减少混凝土因扩散和反弹掉落损耗，同种条件下，现有单一型结构喷头干喷法混凝土回弹率>30%，湿喷法混凝土回弹率>20%，本发明的复合型结构喷头湿喷法回弹率可降低到5%以内，综合成本可降低10%以上。
Composite spray head of gas hood method concrete spraying construction mechanical equipment and construction method
气罩法喷射混凝土施工机械设备复合喷头及施工方法
LIU RUNWEN (author) / LIU MU (author) / LI DENGFENG (author)
2024-06-25
Patent
Electronic Resource
Chinese
Spraying concrete construction equipment for constructional engineering
| European Patent Office | 2021