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3940results about How to "Improve installation accuracy" patented technology

Integral built-in process for groups of anchor bolts

The invention discloses an integral embedded method for a group of anchor bolts. The method comprises the following steps: after assembled lower positioning plates are fixed on a steel bracket in a foundation trench, the lower ends of the embedded bolts are fixedly connected with the lower positioning plates, and upper positioning plates are correspondingly installed on the embedded anchor bolts; steel pipe cat anchors are arranged on the periphery of the foundation trench to adjust the axial line positions of the embedded bolts, concrete is poured into the foundation trench, and after the concrete pouring is accomplished, the axial line positions of the embedded anchor bolts are adjusted. By adopting the method, the bracket and the ring-shaped positioning steel plate can be processed in a plant in advance, few construction site and little operational sequence time are occupied, the on-site splicing can be accomplished by only a spanner tool, the operational sequence is simple, the conventional on-site splicing time is saved, not only the construction speed is greatly accelerated, simultaneously the installation precision is enhanced, the engineering embedded bolt detection indicates that the permissible accuracy error for the embedded bolt installation is above the requirement of the national regulation, and the qualification rate of the engineering large-scale embedded anchor bolt can be up to 100 percent.
Owner:河北省第四建筑工程有限公司

BIM-based pre-assembling method for double-curved glass curtain wall

The invention relates to a BIM-based pre-assembling method for a double-curved glass curtain wall. The method includes the following steps that three-dimensional models of glass curtain wall components are established according to a modeling standard; detailed glass curtain wall component drawings are guided out and numbered, and then processing and production are carried out; three-dimensional scanning is carried out on the processed glass curtain wall components, point cloud data are obtained, and three-dimensional point cloud models are established through the point cloud data; the three-dimensional point cloud models and the three-dimensional models are compared to obtain deviation values of glass curtain wall component solid bodies, and glass curtain wall component information is adjusted till the deviation values meet glass curtain wall standard requirements; and overall pre-assembling of the three-dimensional point cloud models meeting the requirements is simulated in Revit, accumulative errors in the assembling process are eliminated till the pre-assembled three-dimensional point cloud models are completely matched with the three-dimensional models, and then the glass curtain wall components are delivered out of a factory and delivered to a construction site for solid component installation. By means of the method, the problems that the double-curved glass curtain wall is large in field installation difficulty, low in installation efficiency and low in precision are solved.
Owner:SHANGHAI BAOYE GRP CORP

Method for manufacturing and installing guide rail in container ship cargo hold

The invention discloses a method for manufacturing and installing a guide rail in a container ship cargo hold, which comprises the following steps of: (a) manufacturing the guide rail; (b) two-dimensional preassembly: assembling and welding a processed guide plate and the guide rail on a platform by using a doubling plate as a basal plane; (c) hoisting and boarding: installing an eye ring of the guide rail on the guide rail a quarter away from the upper end, respectively installing one eye ring at the left side and the right side of the guide plate, correspondingly reinforcing the eye rings from the back side, and hoisting the whole guide rail to a slipway; adding a toggle plate behind the doubling plate to reinforce the guide rail with low intensity; and after manufacturing the guide rail of a following ship in two segments, connecting the two segments into one guide rail after correction, and hoisting the assembled guide rail; (d) slipway installation: marking, and installing the guide rail; and (e) packaging and testing. In the method, the guide rail is firstly preassembled on the platform by using the doubling plate as the basal plane, and then, the whole guide rail is hoistedonto the slipway and installed. The invention has simple and reasonable method, convenient construction and high guide rail installation accuracy. The upward and downward hoisting and the reasonable arrangement of containers in the cargo hold can be ensured, and thus, the working efficiency and the ship manufacturing quality are increased.
Owner:YANGFAN GROUP

Large valve and large-diameter pipeline pre-assembly pup joint manufacturing and hoisting method

The invention discloses a large valve and large-diameter pipeline pre-assembly pup joint manufacturing and hoisting method. The manufacturing and hoisting method is characterized in that a prefabricated segment and a pre-assembly entirety are manufactured in a ground machining field, and the pre-assembly entirety is hoisted in place with a vertical transportation machine to be connected with an installed overhead large-diameter pipeline in a butt-joint welding mode; the method comprises the technological processes of construction preparing, prefabricated segment manufacturing, pre-assembly entirety manufacturing, pre-assembly entirety hoisting, butt-joint welding of the pre-assembly entirety and the installed overhead pipeline and checking and accepting. The hoisting method has the advantages that the tedious and high-difficulty high-altitude operation process is simplified and completed in the ground machining field, and therefore the problems that in traditional construction, the construction processes are tedious, the construction period is long, the high-altitude operation construction operation surface requirement is high, and the welding and installing quality is difficult to guarantee are solved; the whole construction process is in a safe, stable and controllable state, the installation precision is high, the construction period can be shortened, the construction efficiency is improved, the labor and material cost is reduced, and the economic benefit is significant.
Owner:广西建工第五建筑工程集团有限公司

Drill bit of replaceable cutter head type structure

The invention discloses a drill bit of a replaceable cutter head type structure. Currently, a drill bit of a replaceable cutter head type structure high in machining accuracy, high in mounting accuracy and stable in rotating does not exist. The drill bit comprises a cutter rod, a cutter head and a fixing screw. The cutter rod comprises a cutter rod body. The drill bit is characterized in that a cutter head locating groove is formed in the front end of the cutter rod body, two supporting planes are arranged on the cutter head locating groove, after one supporting plane rotate around the axis of the cutter rod by 180 degrees, the supporting plane and the other supporting plane are overlapped, a locking groove is formed in a fixing column, the fixing column is arranged in a cutter head locating hole in a sleeved mode, a cutter head body is placed in the cutter head locating groove, the two supporting faces on the cutter head are tightly attached to the two supporting planes on the cutter rod respectively, the locating bottom face on the cutter head is tightly attached to the bottom of the cutter head locating groove, the fixing screw is in thread connection into a cutter head fixing hole, and the front end of the fixing screw abuts against the locking groove in the cutter head. The drill bit is high in machining accuracy, high in mounting accuracy, stable in rotating and stable in cutting, the cutter head can be abandoned, and service life is long.
Owner:ZHEJIANG XINXING TOOLS CO LTD

Adhesion clamp for smoke baffle

The invention relates to an adhesion clamp for a smoke baffle. The adhesion clamp for the smoke baffle comprises a frame. The frame is provided with a table top, an upper mounting plate and at least one set of adhesion structure. The adhesion clamp for the smoke baffle is characterized in that the adhesion structure comprises a shelf, a circumferential limiting structure, two L-shaped limiting blocks and two pressing mechanisms; the circumferential limiting structure is used for restraining the smoke baffle in the circumferential direction, and comprises a front positioning block, a rear positioning block, a left positioning block and a right positioning block; the front positioning block and the rear positioning block are fixed to the shelf; the left positioning block and the right positioning block are restrained on the shelf and can slide left and right synchronously; the two L-shaped limiting blocks are used for limiting rotary shaft components, and can move vertically under driving of an air cylinder mounted on the upper mounting plate; and the two pressing mechanisms can press the rotary shaft components onto the upper end face of the smoke baffle to maintain the pressure for adhesion. By means of the adhesion clamp, the rotary shaft components can be accurately and firmly mounted onto the smoke baffle, the dimensions of the rotary shaft components at the two ends of the smoke baffle can be accurate, the both sides are balanced in error, and the situation that errors are lumped at one end is avoided.
Owner:NINGBO FOTILE KITCHEN WARE CO LTD

Assembling type reaction frame device for shield launching and propulsion

The invention discloses an assembling type reaction frame device for shield launching and propulsion, and the device is arranged on a bottom plate of a work shaft, wherein the reaction frame device comprises a frame and a plurality of supporting rods; the frame is connected to the bottom plate of the work shaft by a hinge; the first ends of the supporting rods are connected with the frame; the second ends of the supporting rods are connected with the bottom plate of the work shaft; the frame is coaxial to a tunnel portal; the frame further comprises two cross beams and two vertical beams which are mutually connected to form a rectangular frame; the frame also comprises a plurality of reaction ring assembling beams and a plurality of bolt holes; the reaction ring assembling beams are arc-shaped and are respectively connected at the four corners in the rectangular frame; the surfaces of the reaction ring assembling beams and the surface of the rectangular frame form a plane; and the bolt holes are distributed on the surface of the frame and are corresponding to the positions of longitudinal bolt holes of pipe pieces. Since the whole assembling structure can be repeatedly utilized and the position can be freely adjusted, the assembling type reaction frame device is applicable to different types of work shafts.
Owner:SHANGHAI TUNNEL ENGINEERING CO. LTD. +1

Wallboard installing component and method for installing decorative wallboard by using same

The invention relates to a wallboard installing component which comprises a main keel (1) and an auxiliary keel (2), wherein the main keel (1) is vertically arranged, and the auxiliary keel (2) is horizontally arranged; the main keel is a rectangular pipe with an opening at the back, and paired grooves (1a, 1a'), which are concave and are downwards extended, are continuously arranged on the front surface of the main keel, thereby paired upward fasteners (1b, 1b') are formed on the main keel; the auxiliary keel is a trough type keel which is provided with downward folding edges at the bottom ends of the upper side wall and the lower side wall; the two downward folding edges form a pair of buckling strip sides (2a, 2a'); the pair of buckling strip sides (2a, 2a') of the auxiliary keel are blocked and arranged in the paired grooves (1a, 1a') of the main keel to form a movable fitting device; a raised fixed point sleeve component (3) is arranged on the front surface (2d) of the auxiliary keel; and a lower buckling strip side of the auxiliary keel is provided with continuously paired limiting wedge openings (2c) which are arranged on left and right side walls of the main keel. The installing component provided by the invention can form a keel structure in which the main keel bears an integral force-bearing point, and the auxiliary keel bears a single row force-bearing point; the decorative wallboard is arranged on the auxiliary keel through the fixed point sleeve component, thereby the balanced load bearing of the keel structure can be realized; and the wallboard installing component is not only easy to install, dismantle and maintain, but also has high installation accuracy.
Owner:湖北格林森绿色环保材料股份有限公司

Automatic assembling tightening machine for special glass bottle and bottle cap

The invention discloses an automatic assembling tightening machine for a special glass bottle and a bottle cap. The automatic assembling tightening machine comprises a control system, a feeding mechanism, a tightening mechanism, a detecting mechanism, a glue cleaning mechanism and a conveying mechanism. The feeding mechanism conveys the glass bottle to a tightening station in a correct pose. The tightening mechanism fastens and tightens the glass bottle cap. A transferring mechanical arm conveys the glass bottle to the detecting mechanism to be detected, and the glue cleaning mechanism conducts glue cleaning. The transferring mechanical arm conveys the glass bottle subjected to glue cleaning to the conveying mechanism, and the conveying mechanism conveys the detected glass bottle to a qualified product collecting position or an unqualified product collecting position. The control system achieves position detecting monitoring and alarming functions through a programmable logic controller (PLC). The tightening machine is controlled in a full closed-loop mode, and automatic control of a production process and accurate control of working table movement are achieved. The tightening machine can control the moment of force for fastening the bottle cap accurately, product quality is stable, bottle cap installing efficiency and installing precision are improved through assembly line work and whole-journey automation control, the structure is simple, and operation is convenient.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Metal laser selective melting forming double-piston controllable preheating powder cylinder

The invention discloses a metal laser selective melting forming double-piston controllable preheating powder cylinder capable of respectively working in two states of single piston and double pistons. When the powder cylinder works in the state of single piston, firstly, a large piston basal plate in a forming cylinder is leveled; and then, the periphery of a cylinder body is heated by using a cylinder body heating ring, and a piston heating plate is used for heating a piston cover plate to realize indirect heating of a forming cylinder and metal powder in a powder feeding cylinder. When the powder cylinder works in the state of double pistons, firstly, a small piston basal plate is leveled; and then, powder in a small piston forming cylinder and a small piston powder feeding cylinder is uniformly heated by using the cylinder body heating ring and the piston heating plate. The powder cylinder adopts an integrated double-piston design; a small piston can be replaced and disassembled to realize the laser forming of metal components with different sizes; powder is saved; and meanwhile, the powder cylinder can be heated in all directions, so that the controllable powder preheating is realized, the powder heating is uniform, the temperature gradient is improved, and the deformation and the split of the components are reduced.
Owner:XI AN JIAOTONG UNIV

Converse construction process for middle-high steel structure building

The invention relates to a converse construction process for the middle-high steel structure building, belonging to the steel structure system construction field and aiming at solving the problems that the construction surfaces are less, the construction efficiency is low, the construction period is long and the manufacturing of the steel structure components can not meet the integral mounting quality standard requirements because the steel floorslabs and the steel structure frameworks are constructed synchronously during the construction of the prior steel structure building. The converse construction process for the middle-high steel structure building comprises the following steps: refining and enlarging the connection nodes of the steel structure frameworks; processing and assembling the steel structure components according to the enlarged construction drawing; transporting and stacking the steel structure components; mounting the steel structure frameworks; and moungin the steel floorslabs. Because the converse construction process of mouting the main structures of all the steel structure frameworks before the mouting the steel floorslabs is adopted, the steel structure frameworks and the steel floorslabs can be constructed on the same plane and can be constructed in a vertical and cross way without mutual influence, the construction speed can be accelerated, and the construction efficiency can be improved. The converse construction process is simple, convenient, economical, reasonable, safe and reliable, ensures high mounting precision and can be applied to the construction of various middle-high steel structure buildings.
Owner:BUILDING & MOUNTING ENG CO LTD NO 12 BUREAU MINIST OF RAILWAYS +1

Hole axis detection tool and detection method thereof

The invention belongs to the airplane assembly technology, relates to a tool and a method for detecting assembly error of center points of end faces of joint holes and assembly error of joint hole axes during airplane assembly, and particularly relates to a hole axis detection tool and a detection method thereof. The hole axis detection tool is a shaft, the lower end of the shaft is matched with an assembling join hole, the upper portion of the shaft is provided with two planes machined by utilizing the plane of the axis as a symmetry plane, two through holes are manufactured on the two planes vertically, and center lines of the through holes are intersected with the axis of the shaft. The method includes steps of mounting the shaft in a joint bushing hole of an assembled product during use; measuring coordinates of points 1, 2, 3 and 4 respectively; computing coordinates of center points A and B according to the coordinates of points 1,2,3 and 4; drawing the actual axis, running through the center points A and B, of the joint hole; comparing and analyzing the actual axis of the joint hole and the theoretical axis; accurately analyzing assembly error of the center point of the end face of the joint hole and the hole axis after assembling; and finally taking measures to guarantee assembly accuracy of joints so that quality of products is guaranteed.
Owner:HARBIN

Square steel core filling inner sleeve and opposing screw bolt splicing joint and construction method of splicing joint

InactiveCN102733490AHigh node stiffnessSimple and fast operationBuilding material handlingProject sizeScrew cap
The invention relates to a square steel core filling inner sleeve and opposing screw bolt splicing joint and a construction method of the splicing joint. The joint comprises an upper section square steel pipe, a lower section square steel pipe, a core filling inner sleeve and opposing screw bolts, wherein the core filling inner sleeve and the opposing screw bolts are connected between the upper section square steel pipe and the lower section square steel pipe, the core filling inner sleeve is in a rectangular cylinder shape, concrete is filled inside a tube body, the upper half part of the core filling inner sleeve penetrates through a longitudinal supper section screw bolt and a transverse upper section screw bolt in mutual staggered arranged at top and bottom, and the number of the opposing screw bolts is identical to the number of screw bolt holes arranged on the core filling inner sleeve. The joint rigidity is high, the operation is simple and convenient, the construction speed is high, and compared with the traditional lug plate and flange connection, the joint and the construction method have the advantages that the projected size is greatly reduced, and the design and the installation of adjacent components are convenient. The concrete is also filled in the inner sleeve, the huge pressure transferred by the steel pipe wall can be born, and the inner wall deformation caused by screw cap and screw bolt extrusion is prevented.
Owner:CHINA STATE CONSTRUCTION ENGINEERING CORPORATION
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