4results about How to "Avoid construction errors" patented technology

The utility model relates to the technical field of photovoltaic power generation, in particular to a photovoltaic support construction device which comprises a base and a moving assembly, a lifting assembly is arranged above the moving assembly, and an overturning assembly is arranged above the lifting assembly. The overturning assembly comprises a bracket, an overturning plate and two oil cylinders I, and a carrying table is arranged on the overturning plate; an upper row of limiting pieces and a lower row of limiting pieces used for fixing the edges of photovoltaic panels are arranged on the front face of the carrying table, each row of limiting pieces comprises a plurality of first check blocks and two second check blocks located on the outermost sides of the first check blocks, the first check blocks are each in an inverted T shape, the second check blocks are each in an L shape, and the bottom faces of the first check blocks and the second check blocks in the upper row are inclined faces; four rows of upper and lower clamping plates are further arranged on the front side of the carrying table, one end of each clamping plate is bent upwards to form a hook part, and the other end of each clamping plate penetrates through the corresponding sliding groove and then is connected with a driving set. According to the utility model, the photovoltaic panel is assembled on the platform deck, then the purline and the supporting assembly are installed in sequence, and the whole is assembled with the pipe pile, so that construction and installation are easy.

This utility model relates to a roof-spanning, compression-free Z-shaped purlin device, comprising a main purlin, a support assembly, and connecting nodes. The support assembly, with its segmented design, distributes the roof load and is positioned below the main purlin. The main purlin's web has an elongated hole. The support assembly is fixed to the main purlin via connecting nodes, which include a positioning pin and an anti-torsion groove. The positioning pin is inserted into the elongated hole on the main purlin's web and engages with the anti-torsion groove to limit and prevent torsion of the main purlin. This device achieves compression-free, high-precision purlin installation, improving construction efficiency and structural safety.

The invention provides a long-aging strippable coating resistant to medium-high temperature concentrated nitric acid protection. According to the present invention, the styrene-ethylene-ethylene-propylene-styrene block copolymer (SEEPS) is adopted as the matrix, the fluorine-containing chain segment and the siloxane chain segment are introduced on the molecular chain through the graft copolymerization technology, and the hydrogenated SEEPS provides the saturated hydrocarbon main chain so as to provide the excellent basic flexibility and the excellent thermoplastic peelable property; the introduction of fluorine atoms endows the chain segment with excellent chemical inertness and low surface energy, and can effectively resist oxidation and permeation of concentrated nitric acid; and the siloxane chain segment provides extremely high bond energy, so that the long-term thermal stability of the coating at the temperature of 100 DEG C is guaranteed. The three components are chemically bonded to form rigid-flexible resin, so that acid resistance, heat resistance and peelability are unified from the source.

The invention discloses a gypsum hollow floor slab positioning auxiliary device and a using method thereof, and relates to the technical field of floor slab installation. The device comprises a mounting frame, a lifting assembly, a calibration assembly, a base and an angle adjusting assembly. The lifting assembly drives a lifting plate to slide vertically through a lifting lead screw, a horizontal sliding block is connected to the lifting plate in a sliding mode, and a calibration assembly is installed above the horizontal sliding block. The calibration assembly comprises a laser line marker rotationally installed on a calibration support, and the angle can be adjusted to adapt to the inclined building seam. The mounting frame is rotationally mounted on the base, and the mounting frame can be adjusted to be horizontal on the uneven ground through cooperation of the angle adjusting assembly and the gradienter. The laser line marker is connected with the positioning installation groove in the rotating block in an inserted mode through the positioning installation block. According to the device, bilateral laser synchronous calibration, laser angle adjustment and device horizontal adjustment are achieved, and the problems that an existing device cannot synchronously calibrate bilateral building seams, the laser angle is fixed, and the laser reference accuracy is difficult to guarantee when the ground is uneven are solved.