38results about How to "Solve the installation accuracy" patented technology

The invention provides a lifting device for wallboard installation, and belongs to the technical field of wallboard installation. The lifting device for the wallboard installation comprises an adjusting piece used for supporting a wallboard, a screw rod movably connected with the adjusting piece and a nut in threaded connection with the screw rod so as to adjust the lifting height of the wallboard, wherein the adjusting piece is provided with a supporting part used for containing the wallboard, a connecting part fixedly connected with the supporting part and an adjusting part movably connectedwith the screw rod and located above the nut. According to the lifting device, height adjustment of a bearing part of the adjusting piece is achieved by adjusting the height position of the nut, thebearing part is adjusted to the lifting height needing to be achieved by the wallboard, then the wallboard is placed, and at the moment, fine adjustment can be made on the wallboard, so that the installation precision of the wallboard is met, and the installation quality and the installation speed of the wallboard are improved.

A digital installation method of an acceleration sensor belongs to the field of aviation manufacturing engineering / aircraft assembly. The steps are as follows: firstly, after the aircraft is docked through digital integration, the aircraft coordinate system and the laser tracker space coordinate system are connected through the ground ERS or TB common reference point. The coordinate axes are aligned and fitted. Secondly, connect the transfer tooling, sensor support and the body structure, use a laser tracker to measure the measurement plate, import the measurement results into the theoretical three-dimensional digital model, and establish a spatial comparison between the theoretical plane and the measured plane. Finally, the deflection angle of the actual measured plane relative to the theoretical plane is obtained through digital and analog measurement and calculation, and the optimal compensation scheme for the body structure is obtained by overall translation along the X-axis. After the body structure is compensated, follow the above steps to connect and retest until the Design requirements. The invention can improve the assembly technology level, shorten the assembly production cycle, improve the installation efficiency, and have great significance for the assembly efficiency and quality of fuselage parts.

A multi-degree-of-freedom tie rod attitude measurement and positioning method, through the positioning device and the drill sleeve, the position accuracy of the tie rod joint and the flange matching hole is guaranteed, and the hole punching caused by the displacement and rotation of the multi-degree-of-freedom direction at the joint is avoided Deviation improves the efficiency of assembly and adjustment. By properly extending the length of the guide part of the drill sleeve, the coaxiality and matching accuracy of the upper and lower holes of the tie rod joint and the upper hole of the flange are ensured, so that the subsequent screw fasteners can be installed smoothly. , effectively solved the problem of the installation accuracy of the tie rod and the flange, ensured the reliable connection between the tie rod and the flange, provided a guarantee for the correct installation of the satellite propulsion system, and is of great significance to the subsequent reliable and normal operation of the propulsion system.

The invention discloses a method for manufacturing a contraction section of a large-scale wind tunnel. According to the size of the contraction section of the wind tunnel, a reverse profile mold is designed and manufactured; the installation position of the shell frame of the contraction section is marked on the mold mold; the line is marked Finally, re-inspect the assembly position; then perform pair welding on the shrinkage section frame on the mold; check the size of the frame after the welding is completed; turn over after the size inspection is qualified, so that the inner shape faces upward, and then assemble the skin; finally For overall assembly, weld the upper, lower, left and right frames together. This manufacturing method can effectively guarantee the profile size of the shrinking section of a large wind tunnel, and has the advantages of simple operation, saving construction period, and wide application range. Learn and apply value.

The invention discloses a cantilever type crane beam installing technology. The cantilever type crane beam installing technology comprises the steps that bracket column and crane beam connecting hole adjustment is conducted, chambering installation is adopted, and strengthening plates are additionally arranged on the face not influencing tracks and are drilled; elevation adjustment is conducted, after bracket column installation is finished, whole-course retest is conducted on the bracket column elevation firstly, the manufactured section height of each crane beam is checked, and after errors are found, and abrasive cushion plates are additionally arranged on the surfaces of bracket columns for adjustment; upper beam and lower beam track horizontal distance adjustment is conducted, if adjustment is conducted towards the inner sides of the bracket columns, abrasive cushion plates are additionally arranged at the upper beam and bracket column connecting positions, if adjustment is conducted towards the outer sides of the bracket columns, a notch is formed in an upper beam through repairing, meeting of the requirement for the adjusted distance is the standard, then, flange slabs the same in size are additionally made for equal-strength welding, and the adjusted distance for the outward movement is achieved for the upper beam. By the adoption of the cantilever type crane beam installing technology, construction precision control, construction scheme optimization and integral structure safety control can be more efficiently achieved

The invention provides a pull screw reinforcing mechanism and a reinforcing mechanism construction method, and belongs to the field of buildings. The pull screw reinforcing mechanism comprises a pullscrew whose one end penetrates through a wall, a mountainous clamp mounted at the end, penetrating through the wall, of the pull screw and tightly bonded on the outer wall of the wall, and a combinedpiece comprising an U type sleeve and a T type sleeve; one end of the pull screw penetrates through the wall, the mountainous clamp, the U type sleeve and the T type sleeve in sequence; one end of theU type sleeve is ejected against the mountainous clamp, and the other end is sleeved on a T type end of the T type sleeve through a screw buckle; a conical hole is formed in the end, far from the U type sleeve, of the T type sleeve; a fixture for clamping the pull screw is mounted in the conical hole; and the mountainous clamp is ejected through rotation of the U type sleeve, so that the pull screw is clamped by the fixture in the T type sleeve under the effect of pressure. The U type sleeve of the device and the T type sleeve with the fixture are connected by adopting the screw buckle, so that the installation is firm, and the installation and disassembly speed is high.

An installation process of a shock absorber for an upper module of a floating production oil storage and unloading device adopts the following steps: 1: placing a hollow pad on the ground; 2: placing the upper module on the hollow pad, and reducing the Install the upper plate of the shock absorber on the upper module; 3: Mark the outer contour of the shock absorber and the column base of the upper module on the hull base; 4: Install the lower plate of the shock absorber on the hull base; 5: Install the shock absorber on the bottom plate of the shock absorber; 6: Install the guide plate for the upper module in place; 7: Lift the upper module to the hull base; 8: Connect the stainless steel plate to the base of the upper module column; 9: Remove the upper module positioning guide plate and install the stopper; ten: Install the elastic support. The invention not only solves the problem of the stability of the upper module equipment in the process of oil processing, but also improves the shock absorption performance of the upper module; moreover, it also solves the problems of the installation accuracy and operation efficiency of the upper module.

Provided in the invention is a flow field calibration apparatus comprising a mounting frame, a support frame, a measuring mechanism and a driving mechanism. The mounting frame is fixed at an upper side wall and a lower side wall of a sprayer nozzle outlet of a test cabin by bolts. The support frame consists of an upper inclined support unit and a lower inclined support unit; the upper inclined support unit and the lower inclined support unit are respectively provided with mounting inclined surfaces for installing the measuring mechanism and are respectively fixed right above and below the sprayer nozzle by the mounting frame, wherein the mounting inclined surfaces of the upper inclined support unit and the lower inclined support unit are respectively parallel to the axis of the sprayer nozzle. Bolt holes that are arranged in rows are respectively formed in the upper inclined support unit and the lower inclined support unit; and bolt holes that are arranged in multiple rows and correspond to each other are formed in the walls of the upper inclined support unit and the lower inclined support unit along the axis direction of the sprayer nozzle. The measuring mechanism includes a measuring frame, a measuring rake group, and an adapter piece; the measuring frame is installed at the support frame; and the measuring rake group is installed at the measuring frame. The driving mechanism is installed at the measuring mechanism, so that the measuring rake group can be driven to make linear motion at the measuring frame.

The invention relates to a bridge construction method, in particular to a construction method for a continuous tie bar steel tube arch bridge; the construction method aims at solving the problems that the construction cycle is long, the potential safety hazard is big, the construction difficulty is big, and the like by adopting the existing support method. The construction method comprises the following steps of performing construction on assembling supports for a steel tube arch; processing the steel tube arch by stages, and hoisting the steel tube arch onto the assembling supports; installing temporary abutment supports and opposite-pull steel stranded wires to enable the steel tube arch to form a bowstring whole bearing structure; supporting the steel tube arch by the temporary abutment supports instead of the assembling supports, and removing the whole assembling supports; installing a longitudinal movement pushing system for the steel tube arch to enable the steel tube arch to move forward; welding the steel tube arch after the steel tube arch are pushed in place. Firstly, The difficult problem that the safety risk is big due to the fact that the pushing distance is far and the steel tube arch needs to cross the existing railways and highways after the steel tube arch is assembled is solved; secondly, the problem that arch feet are low in installation accuracy is solved, so that the linearity and design linearity of the whole steel tube arch are enabled to be consistent, and the stress state and the design state of the steel tube arch are finally enabled to be consistent; thirdly, the stress state and the design state of a beam body are consistent, so the construction quality is finally guaranteed.

The invention discloses a construction method of an arc cable wire slot structure. The arc cable wire slot structure comprises a cable wire slot and a wire slot bearing part, wherein the cable wire slot comprises two segments of linear wire slots and an arc wire slot for connecting the two sections of linear wire slots; the arc segment wire slot is slot-shaped and comprises two connecting units with the same shape and size; two connecting units are in left-right mirroring butt joint, each connecting unit comprises a bottom plate, and a long ledge and a short ledge which are respectively vertical to the bottom plate. The construction method comprises the steps of computing the bend angle of the arc segment wire slot, counting the angle and the type of the arc segment wire slot, drawing a blank part detail drawing by using the 3D software, processing to produce the arc segment wire slot and numbering, paying off according to the mounting of a wire slot support by a design drawing, and mounting the wire slot. The construction method can satisfy the demand of the rigid cable wire slot mounting when the municipal integrated trench construction arc structure part is high in occupancy, the arc wire slot is multiple in specification and model, the cable laying quality requirement is high, and the mounting space arrangement difficulty is large.