6results about How to "Precise verticality" patented technology

The utility model discloses an automatic tube plate welding device which comprises a base, a positioning groove is formed in the center of the base, lifting mechanisms are correspondingly arranged on the two sides of the base, lifting rods of the lifting mechanisms stretch out upwards, an integrated station plate is installed at the rod ends, an L-shaped station groove is formed in the inner side of the station plate, and the L-shaped station groove is formed in the inner side of the station plate. And communicating grooves are correspondingly formed in the inner sides of the station grooves, and the station grooves and the communicating grooves correspond to the positioning grooves in the base below in position. According to the device, the positions of the tube holes in the tube plate correspond to the positions of the positioning convex columns on the positioning circular plate, the placing positions are determined under the action of the limiting grooves and the limiting blocks, the positions of the tube bodies can be determined by placing the tube bodies from the tube holes and correspondingly sleeving the lower ends of the tube bodies in the positioning convex columns, and the tube bodies are absolutely vertically placed, so that the accuracy of perpendicularity is ensured; and the position of the pipe body is effectively fixed, and the welding efficiency and quality are improved.

The invention discloses a processing method of a balance valve body, belongs to the technical field of balance valve body processing, and solves the problem of low product processing percent of pass caused by ellipse and eccentricity of a valve core hole processed by the existing balance valve body. According to the method, after the balance valve body is fixed through a first tool clamp, the balance valve body is subjected to face milling, then an O-shaped ring counter bore is machined, then a flange oil port is machined, then a valve element hole is roughly machined after the balance valve body is pressed on a tool plate through a screw, an inclined hole is machined after the valve element hole is machined, and then the balance valve body is machined. According to the machining method of the balance valve body, the size precision requirement of the valve element hole can be effectively guaranteed, the product percent of pass can be effectively increased, and the machining method has the advantages of being high in practicability and wide in application range.

The utility model discloses a wall perpendicularity measuring device for building construction, which belongs to the technical field of building construction and comprises two groups of vertical plates, and one end of the side surface of each vertical plate is movably provided with a foldable first support plate and a foldable second support plate respectively. A horizontal adjusting assembly for adjusting the angles of the first supporting plate and the second supporting plate is arranged on the side face of the vertical plate, and horizontal debuggers are arranged in the first supporting plate and the second supporting plate correspondingly. According to the utility model, a vertical standard is formed through the laser transmitter and the laser receiver, so that data measurement is more accurate, and meanwhile, the displacement sensor can obtain accurate data; then two right-angle sides of a right triangle are formed through the distance difference between the laser transmitter and the laser receiver and the wall and the distance between the first supporting plate and the second supporting plate, accurate wall perpendicularity can be easily obtained through mathematical knowledge, installation is easy, and the angle of the first supporting plate and the angle of the second supporting plate can be conveniently adjusted.

The utility model provides a verticality verification system, and the system comprises a workbench which is used for placing a to-be-verified workpiece; the shell is arranged at the upper part of the workbench and is provided with a placing part; the sliding rod is vertically arranged on the placing part, the sliding block is installed on the sliding rod in a sliding mode, and the measuring equipment is arranged on the sliding block; the driving device is arranged on the placing part and used for driving the sliding block to slide along the sliding rod; and the distance measuring assembly is arranged on the sliding block and the placing part, is used for detecting the movement displacement of the sliding block and is connected with an external control device. The distance measuring assembly is additionally arranged on the perpendicularity verification system and connected with the external control device, so that an accurate distance positioning system composed of the driving device, the distance measuring assembly and control software is formed, and a pointer can be quickly and accurately moved to a specified height position; therefore, the problem that manual pointer displacement and human eye position recognition cannot be accurate is avoided, and the accuracy of position detection of measuring equipment such as a dial indicator is improved.

The utility model provides a kind of novel large-diameter vertical shaft segment assembly precision control's auxiliary tool and device, the auxiliary tool includes fixed frame, the top of one end of the fixed frame is symmetrically provided with two auxiliary plates, two auxiliary plates are arranged in the shape of splay, two side plates of the fixed frame below auxiliary plate are respectively provided with one for adjusting inverted trapezoidal segment angle separation type jack, the bottom of the fixed frame is fixed to the end of right trapezoidal segment, and the lower area of inverted trapezoidal segment is formed between two auxiliary plates.The utility model is simple in structure, reasonable in design, can constrain the turning direction of segment vertical surface, prevent inside and outside turning when vertical shaft segment is lowered and assembled, ensure the perpendicularity of vertical shaft segment lowering, and make screw positioning more accurate when inverted trapezoidal segment is lowered and assembled.

The invention discloses a pile foundation full pile casing for expansive soil and argillaceous sandstone construction and a method thereof. The pile foundation full pile casing comprises a casing body, a plurality of swingable dovetail claws are installed on the end wall of the bottom of the casing body, a plurality of driving rods are vertically and slidably connected into the casing wall of the casing body in a penetrating mode, and the dovetail claws are driven to swing through lifting of the driving rods; the outer wall, close to a top port, of the barrel is rotationally sleeved with a lantern ring, a waveform groove is formed in the inner wall of the lantern ring, a cylindrical head is installed on the outer wall of the driving rod, and the outer wall of the cylindrical head is in sliding connection with the inner wall of the waveform groove; a hanging rod is hinged to the outer wall of the lantern ring. According to the method, the problem that under the complex geological condition, the pile casing is prone to deviation or inclination, and consequently the position of a pile foundation deviates is solved.