5results about How to "Simplify construction procedures" patented technology

This invention belongs to the field of steel structure building technology, and particularly relates to a connection structure for prefabricated steel structure beams and columns with ultra-large cross-sections. The structure includes: an upper connecting column with a lower supporting column at its bottom; both the upper connecting column and the lower supporting column are hollow square steel tubes; a positioning component fixedly disposed at one end inside the upper connecting column; a clamping component fixedly disposed at one end inside the lower supporting column, which cooperates with the positioning component to clamp the positioning component; and a beam-column connection component fixedly disposed at the outer end of the upper connecting column and / or the lower supporting column, with multiple crossbeams detachably connected to the beam-column connection component. This invention can improve the construction efficiency and assembly accuracy of steel structure beams and columns.

The utility model discloses a three-shaft mixing pile and triple high-pressure jet grouting pile effective pile length control device which comprises an input display screen and a drill rod top power head, a plurality of laser ranging sensors are installed on the upper portion of the drill rod top power head, and a single chip microcomputer and a control system are arranged between the laser ranging sensors. The laser ranging sensor is firstly connected into the single chip microcomputer through a laid electric connection circuit and finally connected into the input display screen, through a drill rod control system, when laser reaches the pile top elevation, a drill rod starts to spray and stir surrounding soil, and when the drill rod reaches the pile bottom elevation, the drill rod is lifted, and the drill rod starts to spray and stir the surrounding soil. The problems that the pile body length control program is tedious, the effective length of the pile body cannot be accurately controlled and the like are effectively solved, particularly, the construction efficiency can be effectively improved, the effective length of the pile body is guaranteed, and control over the cement consumption is improved.

The invention relates to colored putty for concrete surface color difference repair, which belongs to inorganic repair materials and mainly comprises cement, heavy calcium powder filler, mortar admixture, toner and the like. The inorganic material components in the colored putty are relatively good in aging resistance and weather resistance, so that the durability of a concrete surface color difference repairing material exposed in an outdoor service environment can be improved. In addition, compared with an existing organic coating for concrete surface color difference repairing, the material has the great cost advantage. The invention also provides a preparation method of the colored putty.

The present application relates to a kind of magnesium phosphate beads for emergency repair cement that can melt ice and remove snow, its preparation method and repair method, the beads include PVA water-soluble film and content, content includes by mass fraction: dead-burned magnesia 2-3 parts, ammonium dihydrogen phosphate 1 part, retarder 0.15-0.25 parts, acrylamide 0.3-0.6 parts, ammonium persulfate initiator 0.03-0.06 parts, fine aggregate 3.98-4.41 parts. After stirring and mixing each component, the mixed material is obtained, and the beads are prepared by wrapping with PVA water-soluble film according to different mass fractions. The present application determines the total amount of magnesium phosphate cement concrete required for the repair area and the mass of magnesium phosphate beads and water, places the required magnesium phosphate beads in the position to be repaired, adds water, and the components in the film react to complete the repair. The present application only needs to place a certain amount of magnesium phosphate beads and water at the repair position to achieve repair, simplifies the construction procedure, improves the construction efficiency, and has the function of melting ice and removing snow.

The utility model discloses a hidden assembly type trunking lamp bridge frame, which relates to the technical field of trunking lamp bridge frame assembly and comprises bridge frame main bodies and connecting plates, and the trunking lamp bridge frame is formed by splicing a plurality of bridge frame main bodies through the connecting plates. The cross section of the bridge body is of a horizontal C-shaped structure, a lamp hole is formed in the bottom of the bridge body, the top of the bridge body is flanged inwards to form a bent part, and a series of mounting holes are symmetrically formed close to the end of the bent part. A branching mechanism is rotationally mounted in an inner cavity of the bridge frame through a connecting rod; the connecting plate is of a U-shaped structure, a series of mounting holes are evenly distributed in the top face of the connecting plate, a suspender hole is formed in the center of the connecting plate, and a suspender is fixedly installed through bolts. A user is allowed to select the bridge main bodies with different structures according to actual requirements, the bridge is suitable for different installation environments and lamp layouts, the flexibility is high, original exposed accessories are hidden, and the overall impression degree is greatly improved.