46results about How to "Protect the construction environment" patented technology

The invention discloses a wall grinding device for decoration engineering, comprising a main box, a handle is fixed on the outer wall of the main box, a motor is fixed on the inner bottom of the main box, and an output shaft of the motor penetrates the main box The bottom of the handle is fixed with a polishing plate, the outer wall of the main box is fixed with a protective cover, the upper end of the main box is provided with a pumping mechanism, the side wall of the handle is fixed with an exhaust box and a dust box, the A dust removal mechanism and a dust collection mechanism are respectively provided inside the exhaust box and the dust collecting box. The advantage is that the dust generated by cleaning will accumulate inside the protective cover, so that it will not escape at will, which can protect the construction environment and the safety of users, and the dust generated by processing can be taken away in time without affecting processing. When the overall position of the equipment is changed, it will not cause dust leakage, which is convenient for the use of continuous replacement.

The invention provides a dry-soil-removed reinforced concrete screw pile forming device. The dry-soil-removed reinforced concrete screw pile forming device comprises a steel mould pipe, wherein the steel mould pipe penetrates through a base of a piling machine, and is provided with an external helicoid, a rotating power head is arranged at the upper end of the steel mould pipe, a cross-shaped connector is arranged at the lower part of the steel mould pipe, a steel hoop is welded to the top end of the steel mould pipe, a notch is formed at one end of the steel hoop, and is matched with the cross-shaped connector, clamps are arranged between the steel hoop and a base of the rotating power head, and can be connected with each other to form a whole, and an auxiliary rotating power device is arranged at the middle part of the steel mould pipe. A pile forming method comprises the following steps of: firstly, arranging the steel mould pipe in place, starting the power head to screw the steel mould pipe into a soil layer, starting the auxiliary rotating power device to a designed elevation in the case that the steel mould pipe enters a hard soil layer, completely removing soil in the steel mould pipe, putting a reinforcing cage into the steel mould pipe, grouting and filling concrete into the steel mould pipe, and inversely rotating the power head to check height of the concrete in the steel mould pipe so as to ensure dimension of the external helicoids of the pile until the steel mould pipe gets away from the soil layer, so that a screw pile is formed. The dry-soil-removed reinforced concrete screw pile forming device and the pile forming method provided by the invention have the advantages of high bearing capacity, high pile forming quality, environment friendliness and energy-saving performance, and is particularly applicable to a deep soft soil layer and a flat-bottomed screw pile.

The present invention relates to the technical field related to construction machinery, in particular to a slotting device for building interior decoration, which includes an organism, a slotting assembly, a grinding assembly, a driving assembly, a dust collection assembly and a height adjustment assembly. The two output ends of the driving assembly are respectively It is connected with the slotting assembly and the grinding assembly. The slotting assembly includes a vertical slotting disc, which is rotatably mounted on the bottom of the machine body. The grinding assembly includes a vertical grinding disc. There is a dust-absorbing head, which is fixedly installed on the bottom of the machine body. The height adjustment assembly includes a bottom plate that can be lifted vertically. There are several slotted discs and grinding discs. The top of the machine body is hingedly provided with a push handle. The equipment shown improves the accuracy of slotting, reduces labor intensity, and can adjust the number and size of slotting disks according to requirements, which improves the practicability of the equipment. The dust suction component can collect the dust generated during slotting and grinding. The construction environment is protected.

The invention discloses a steel beam structure capable of being replaced due to earthquake damage. The steel beam structure comprises a combined steel beam and a combined floor slab connected with the combined steel beam, wherein the combined steel beam comprises a first end part steel beam, a first energy dissipation section steel beam, a middle section crossing steel beam, a second energy dissipation section steel beam and a second end part steel beam which are sequentially connected, the first end part steel beam and the second end part steel beam are respectively connected with end posts at the two sides, and all the steel beams are an I beam respectively and are easy to repair. Meanwhile, the repair cost is low, the construction period is short, and the steel beam structure is less restricted by climatic conditions.