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79results about How to "Lower working height" patented technology

Rapid construction method of arched pipe truss

InactiveCN110259145ASee the connectionAccurately determine the center of gravityGeometric CADBuilding material handlingRisk strokeRapid construction
The invention discloses a rapid construction method of an arched pipe truss. The rapid construction method comprises the following steps that (1) a BIM structural model of the arched pipe truss is established; (2) horizontal integrated pre-assembly and segment welding are performed in a factory for the pipe truss to form truss bodies to be transport to a site; (3) the truss bodies are assembled to form two main trusses; (4) in-span brackets are installed; (5) the two main trusses are lifted and welded to connect the two main trusses into the pipe truss; (6) the assembled pipe truss is lifted in place to complete installation of the pipe truss; (7) the steps 2-6 are repeated to form two pipe trusses, a secondary truss and a roof support are installed, so that the installed part forms a whole force system; and (8) the steps 2-7 are repeated until all pipe trusses are installed. According to the rapid construction method of the arched pipe truss, in-span vertical one-time splicing rapid construction of the arched pipe truss can be completed in the case of poor on-site site conditions, the risks of working at height are reduced, the construction period is ensured, the construction cost is saved, and multiple purposes are achieved at one stroke.
Owner:CHINA METALLURGICAL CONSTR ENG GRP

Built-in pilot operated solenoid valve

The invention discloses a built-in pilot operated solenoid valve with a self-locking function. The built-in pilot operated solenoid valve mainly consists of a primary valve body, a filter neck, a filter, a valve bush, a cylindrical spring, a spring force regulating pad, a current-limiting pin, current blocking rings, a primary valve element, a secondary valve coil assembly, a magnetism isolating pad, a secondary valve element and a secondary valve seat, wherein a secondary valve adopts a coil and permanent magnet combined drive source, has a bistable-state passive self-holding function, and power can be provided for state shifting by two coils. By virtue of matching between mounting force of the current-limiting pin and mounting force of the cylindrical spring, reliable action of a primary valve is realized. Under a small-flow working condition, a medium can flow to the downstream through a channel between the current-limiting pin and the secondary valve. A reverse sealing structure made of a metal-hard plastic can give consideration to gastight requirements of high-pressure and low-pressure working conditions. The product can be used gas and liquid-path switch valves with large-flow multi-action needs, and is especially suitable for a high-pressure medium. By virtue of interface adaptive improvement, the built-in pilot operated solenoid valve further can be used as a control valve of an attitude and orbit control liquid rocket engine.
Owner:XIAN AEROSPACE PROPULSION INST

Switching system of sliding rail

The invention discloses a switching system of a sliding rail and belongs to the technical field of automobile welding production. The switching system of the sliding rail is characterized by comprising a fixed rail set, a servo drive mechanism, a sliding trolley and single-unit switching mechanisms, wherein the single-unit switching mechanisms are located at the intersecting position of rails of the fixed rail set, and each single-unit switching mechanism comprises a rotating rail set, a universal supporting wheel set and an air cylinder drive set; each rotating rail set comprises a rotating rail, a rotating wheel and a rotating side arm; the two ends of each rotating rail are connected with the rails of the fixed rail set, and each rotating rail is fixedly connected to the corresponding rotating wheel; each rotating wheel is fixedly connected with the corresponding rotating side arm, and the other end of each rotating side arm is hinged to a piston rod of the corresponding air cylinder; each universal supporting wheel set comprises a fixed wheel, a connecting body, a universal sphere and a sliding wheel, and each sliding trolley is fixedly connected with the corresponding fixed wheel; and the sliding wheels are arranged at the lower end of the corresponding universal sphere and clamped on the two sides of the corresponding rotating rail. By means of the single-unit switching mechanism, production of multiple vehicle models on the same line is achieved on the same plane. The switching system of the sliding rail has the beneficial effects of reducing cost and improving efficiency.
Owner:ANHUI RUIXIANG IND

Steel structure building and wall construction method thereof, and girder and column steel member

The invention discloses a steel structure building and a wall construction method thereof, and a girder and column steel member. The wall construction method of the steel structure building includes the following steps that firstly, the prefabricated steel member serving as a stand column and / or a roof girder is fixedly installed, the steel member comprises a steel member body extending in the column height or girder length direction, and the steel member body is provided with prefabricated rib plates extending in the same direction on the side surfaces in an outward convex mode; secondly, when a wall board is erected, the wall board is horizontally moved till the edge of the board surface on one side is placed on the corresponding prefabricated rib plate, and the vertical edge of the attaching side of the wall board faces the side surface, where the prefabricated rib plate is located, of the steel member body; and thirdly, the side, away from the prefabricated rib plate, of the wall board is pressed with connecting rib plates. The prefabricated rib plates are prefabricated on the steel member, the prefabricated rib plates can play a role in prepositioning the wall board, the wall board can be installed in a horizontal moving mode after being erected, and thus the operation difficulty of wall board installation is reduced, and the wall construction safety and efficiency are improved.
Owner:常华北

Integrated connection module structure of nuclear power station safe shell steel lining and mounting method thereof

The invention discloses an integrated connection module structure of a nuclear power station safe shell steel lining. The structure comprises a baseplate ring segment, a haunching area wall plate anda horizontal segment, the baseplate ring segment and the horizontal segment are both horizontally arranged, and the haunching area wall plate is vertically arranged; the baseplate ring segment is fixedly connected with the lower end of the haunching area wall plate, the upper end of the haunching area wall plate is fixedly connected with one end of the horizontal segment, and a first reinforcing joint is arranged on the connection portion of the baseplate ring segment and the haunching area wall plate; a second reinforcing joint is arranged on the connection portion of the haunching area wallplate and the horizontal segment, a third reinforcing joint is arranged at the end, away from the haunching area wall plate, of the horizontal segment, and the baseplate ring segment, the haunching area wall plate, the horizontal segment, the first reinforcing joint, the second reinforcing joint and the third reinforcing joint are integrally assembled into an entirety and then fixedly connected with the lowest layers of the baseplate ring segment and a nuclear power station safe shell steel lining cylinder. The integrated connection module structure has the advantages that module assembly is conducted on an assembly field, hoisting in position at a time is achieved, and the intersecting construction time of construction with an inner shell is reduced.
Owner:CHINA NUCLEAR IND HUAXING CONSTR

Double-screw type automatic lifting trolley

The invention discloses a double-screw type automatic lifting trolley which comprises a trolley body, a walking device, a lifting device and an optoelectronic switch. The trolley body comprises a top cover, a shear fork type guide device and a base, the shear fork type guide device comprises a linear guideway fixed to the base, a left knife and fork and a right knife and fork, and the knives and forks are connected with the top cover and the base through a pin shaft and the linear guideway; the walking device is installed on the lower face of the base, the lifting device is arranged between the top cover and the base, the top end of the lifting device is fixedly connected with the top cover through a flange, and the bottom end of the lifting device is fixed to the base through a bolt; and the top cover is provided with a material support, a magnetic force tension dividing device transverse beam is arranged above the material support, and the optoelectronic switch is installed at the lower end of the magnetic force tension dividing device transverse beam. The double-screw type automatic lifting trolley is small in working height and large in lifting stroke, the production efficiency is improved, and the labor intensity of workers is reduced. The double-screw type automatic lifting trolley is novel in structure and compact in overall structural layout, and the total line cost is reduced.
Owner:JIER MACHINE TOOL GROUP

Bottom die trolley of short-line matching prefabricated box girder

The invention discloses a bottom die trolley of a short-line matching prefabricated box girder. The bottom die trolley comprises an upper-layer support, a lower-layer support, an adjusting device, a jacking device and a walking device. The two supports are vertically stacked, and are small in size and low in center of gravity. The walking devices are connected to the bottoms of the two transversesides of the lower-layer support. Vertical limiting columns are connected to the middle positions of the front end and the rear end of the lower-layer bracket; the limiting column penetrates through the upper-layer support to enable the two supports to be vertically limited through a fastener, the adjusting device is a telescopic device arranged in the horizontal direction, one end of the adjusting device is hinged to a hinge base on the upper-layer support, the other end of the adjusting device is hinged to the limiting column and vertically limited, and the multiple jacking devices are vertically connected to the upper-layer support. Horizontal transverse movement of the upper-layer support relative to the lower-layer support and rotation of the upper-layer support around the limiting column on one side can be achieved through telescopic movement of the adjusting device, the jacking device is used for jacking the matching beam, the vertical height or inclination angle of the matchingbeam can be adjusted, longitudinal movement of the matching beam carried by the bottom die trolley is achieved through the walking device, and operation is easy.
Owner:湖南五新智能科技股份有限公司

Method for laterally turning heavy rack

The invention relates to a method for laterally turning a heavy rack. According to the method, a support upright is built inside a foundation trench, the rack is turned to the support upright, a turning bracket is arranged at a foundation trench opening, an inner support is arranged inside the rack, and the inner support is connected with a rotary support; a hanging point is selected from the tail part of the rack so as to connect the rack with a crown block; the support upright is removed, and the rack turns under the action of self-gravity of the rack; and after the rack is turned, a temporary support device is installed, the turning bracket is removed, and the temporary support device is removed under the matching of a jack. According to the turning method, the heavy rack can be installed in a common workshop under the condition that a workshop structure is not dismounted, the work height is lowered, the construction difficulty and the risk of work high above the ground are reduced, the rack can be turned only by using the workshop crown block and without a large crane and heavy hydraulic lifting and hydraulic sliding devices, the construction cost is reduced, the construction efficiency is improved, the time limit for a project is shortened, the controllability is strong, the safety and the reliability of the construction site are improved, and the method is suitable for turning various heavy racks.
Owner:CHINA 22MCC GROUP CORP +1

Ultralow belt conveyer

InactiveCN103332431ALower working heightSmall shaft diameterConveyorsRollersEngineeringBelt conveyor
The invention relates to an ultralow belt conveyer. The ultralow belt conveyer comprises a machine frame, a conveying belt, a belt supporting device, a tensioning device and a power device, wherein the machine frame comprise an upper machine frame and a lower machine frame, the upper machine frame is arranged obliquely, the lower machine frame is arranged horizontally, the included angle between the upper machine frame and the lower machine frame is smaller than 22 degrees, a belt pressing shaft device is arranged at the junction between the lower machine frame and the upper machine frame, the conveying belt is tightly pressed by the belt pressing shaft device and elevation steering is achieved, the belt pressing shaft device comprises a pair of belt pressing shaft fittings, the belt pressing shaft fittings are arranged at the two sides of the conveying belt respectively, the length of each belt pressing shaft is far smaller than the width of the conveying belt, and each belt pressing shaft fitting comprises a belt pressing shaft, a bearing and a bearing seat. The ultralow belt conveyer further comprises a rotary shaft fitting and a belt blocking device, wherein the rotary shaft fitting is used for bearing the weight of the conveying belt and limiting the travel distance of the conveying belt, and the belt blocking device is used for correcting the deviation of the conveying belt. The ultralow belt conveyer has the advantages that the size is small, the weight is low, no pit needs to be dug on the ground, and the belt conveyer can be moved manually.
Owner:ZHENGZHOU DINGLI DRYING EQUIP

Sheet metal bending device and bending method

The invention discloses a sheet metal bending device and a bending method. The sheet metal bending device comprises a base, wherein an inverted L-shaped support is fixedly mounted on one side of the top of the base, a hydraulic cylinder is fixedly mounted at the top of the inner wall of the inverted L-shaped support, a mounting groove is formed in the middle of the top of the base, a second rotating motor is fixedly mounted in the mounting groove, and the output end of the second rotating motor is fixedly connected with a second rotating shaft. According to the sheet metal bending device and the bending method, through the corporation of a circular rotary plate, a bending device, a lower mold base, the hydraulic cylinder, an inlet-outlet opening, an upper mold base, a limiting block, a limiting rod, a spring, the second rotating shaft, the mounting groove, the second rotating motor, a storage groove and a forming cavity for use, the working intensity of workers is greatly reduced, andthe sheet metal bending efficiency is improved; and meanwhile, the storage groove can define the position of a metal plate, so that shifting of the metal plate before the metal plate is bent can be avoided, the sheet metal bending quality is improved, and the workers can conveniently place the metal plate.
Owner:TIANJIN BAOJUN TECH DEV

Circular seam milling and friction stir welding integrated device for aluminum alloy storage tank

The invention discloses a circular seam milling and friction stir welding integrated device for an aluminum alloy storage tank. The circular seam milling and friction stir welding integrated device comprises a friction stir welding machine head and a milling machine head and further comprises an annular gantry, a lathe bed, a headstock and a tailstock. The annular gantry is arranged in the middle of the lathe bed. Transmission sliding rails are arranged at the positions, on the two sides of the annular gantry, of the lathe bed. The headstock and the tailstock are installed on the transmission sliding rails on the two sides of the annular gantry correspondingly. A swing mechanism is arranged on the annular gantry, and the friction stir welding machine head and the milling machine head are installed on the swing mechanism. When the circular seam milling and friction stir welding integrated device is used for carrying out circular seam milling and friction stir welding on the aluminum alloy storage tank, a workpiece is mounted on the headstock and the annular gantry as well as the tailstock and the annular gantry, the workpiece does not need to rotate, the friction stir welding machine head and the milling machine head rotate around the workpiece through the swing mechanism to carry out milling machining or welding machining, the problem of device abrasion or precision reduction caused by large inertia brought by workpiece rotation is avoided, and the milling machining quality and the welding quality are guaranteed.
Owner:GUIZHOU AEROSPACE TIANMA ELECTRICAL TECH

Integrative bridge erection machine of shift type transporting and erecting girder and bridge erecting method

The invention provides an integrative bridge erection machine of a shift type transporting and erecting girder, which relates to a bridge erecting device. The invention aims at providing an integrative bridge erection machine of a shift type transporting and erecting girder and a bridge erecting method, which effectively solves of erecting a bridge in a tunnel and a first hole out of a tunnel opening and erecting a bridge with a smaller curve radius. The integrative bridge girder erection machine of the shift type transporting and erecting girder comprises a girder transporting and erecting machine and a lower girder guiding machine, wherein the girder transporting and erecting machine comprises a girder, a front running wheel group and a rear running wheel group; the lower girder guidingmachine comprises a guiding girder, front, middle and rear roller wheel legs and a girder erecting dolly; the movable girder erecting dolly is arranged on the guiding girder, the front part of a maingirder is provided with a main girder shifting and stretching section which extends forwards, the connection of the main girder shifting and stretching section and the main girder is provided with a downward shift supporting seat, and a shift supporting and moving mechanism is arranged on the girder erecting dolly and can slide along the bottom of the main girder shifting and stretching section under the shift supporting seat. When the erection moves ahead, the shift supporting and moving mechanism is raised step by step by the running wheel groups to convert the load to the girder erecting dolly step by step, thereby completing the conversion of carrying and supporting points.
Owner:北京万桥兴运工程技术有限公司

Single-sided clamping type piling device

The invention discloses a single-sided clamping type piling device. The single-sided clamping type piling device structurally comprises a driving device, an adjusting assembly, a clamping device and acontrol system, wherein the driving device comprises a vibration excitation driving device and a rotary driving device, the vibration excitation driving device comprises a vibration excitation box body and a vibration excitation motor, and the rotary driving device comprises a rotary motor and a gear reducer composed of a rotary gear and a speed reduction worm; the adjusting assembly comprises aconnecting frame, a deflection rotating disc, a deflection oil cylinder and a rotary driving device; and the clamping device comprises a side clamping device and a straight push clamping mouth at thelower part of the whole device. The single-sided clamping type piling device has the advantages that the device is not limited by the operation height when working; the structure is smooth and steady;the interference of a pile body and the rotating disc at the upper end is avoided during pile clamping work; the self-locking position function is achieved; the any angle rotation of a connecting suspension arm and parts below the connecting suspension arm is achieved; the device completes the pile driving and extracting operation at each posture and angle; and the device posture control and thepile driving state control can be achieved through wired control or wireless remote control when the device is used.
Owner:江苏坤龙机械科技有限公司

Turnover machine

The invention discloses a turning-over machine which comprises a machine frame, a rotating mechanism, a moving mechanism and at least four sets of fork rods. The rotating mechanism and the moving mechanism are both installed on the machine frame. The rotating mechanism is provided with at least two rotating discs fixed at two ends of a rotating shaft. Each rotating disc is provided with a moving roller supporting and limiting the fork rods to conduct linear movement. Two pairs of fork rods are symmetrically and vertically installed on the moving rollers with the axis of the rotating shaft as the symmetrical center. Two pairs of synchronous gears are connected coaxially, meshed with synchronous racks on the outer sides of the two pairs of fork rods and vertically installed on the rotating shaft. When a moving gear of the moving mechanism rotates, the moving gear drives moving racks on the lower sides of the lower fork rods to move linearly. Under the effect of the synchronous gears and the synchronous racks, moving racks on the upper fork rods also move in the same direction synchronously. When the two pairs of fork rods clamp a plate from the plate feeding position, after the rotating mechanism rotates through 180 degrees, the two pairs of fork rods are driven by the moving mechanism to be pushed backwards to the original plate feeding position to achieve the aim that the two pairs of fork rods clamp the plate in a circulation mode and turn over the plate. Due to the fact that the fork rods only rotate on the upper half ring of the turning-over machine, working height of the turning-over machine is reduced.
Owner:张铭勇
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