51results about How to "Reduce lifting difficulty" patented technology

The invention provides an adjustable track beam girder erection platform. The adjustable track beam girder erection platform comprises a base and a positioning and storing device; the base can be arranged on a bridge pier, and the positioning and storing device is used for allowing a track beam to be placed; the adjustable track beam girder erection platform further comprises at least two sets ofadjusting mechanisms arranged on the base, wherein each adjusting mechanism supports and fixes the positioning and storing device and is distributed between the base and the positioning and storing device at intervals, each adjusting mechanism comprises a sliding assembly capable of moving in a bridge clockwise direction and a bridge transverse direction, and the sliding assembly supports the positioning and storing device. The invention further provides a track beam girder erection method, and the girder erection platform is adopted. The girder erection platform can accurately control the attitude of the track beam on the bridge pier, the track beam does not need to be precisely controlled when the track beam is hoisted and constructed, the hoisting difficulty of the track beam can be greatly reduced, the installation precision requirement of the track beam can be met, the control is easy, the adjustment is convenient, in addition, the girder erection platform can be reused, and the economical efficiency is also good.

The invention discloses a vertical rotating and lifting construction method of a steel structure arch rib. The vertical rotating and lifting construction method of the steel structure arch rib comprises: constructing bridge piers and each temporary foundation, installing temporary rotating hinges on arch springing embedded sections of the bridge piers, erecting a tower and arranging lifting devices at the top of the tower; assembling first main arch sections and second main arch sections, installing main body sections of the second main arch sections, and hinging one ends of the first main arch sections and one ends of the second main arch sections to the corresponding temporary rotating hinges; installing an anchorage, synchronously vertically rotating and lifting the first main arch sections, and monitoring the horizontal displacement of the tower; supplementarily installing interference sections, connected with the main body sections, of the second main arch sections; synchronouslyvertically rotating and lifting the second main arch sections, and carrying out monitoring; installing closure sections, and supplementarily installing the temporary rotating hinges; uninstalling thelifting devices; and constructing concrete side arches. According to the vertical rotating and lifting construction method, a bridge rib is divided into five sections and assembly is carried out on the ground, the installation quality is high, a main arch is divided into two sections for vertical rotating and lifting, the stress of each stress point and the tower is constantly monitored during thevertical rotating process, the difficulty of lifting is reduced, the construction is easy, the construction period can be effectively shortened, and the safety and stability of the lifting process are guaranteed.

The invention discloses an oil pipe carrying device for oil reservoir engineering. The oil pipe carrying device comprises vertical columns, a top plate, a first fixed plate, a second fixed plate, connection plates, placing plates, plug pins, first motors, rotating wheels, digging ropes, fixed blocks, sliding blocks, guide plates, bearing plates, position-limiting blocks, hydraulic rods, supportingplates, idler wheels, second motors, gears, position-limiting plates, toothed plates, moving plates, guide rods, extending plates, second hydraulic rods and support plates. The oil pipe carrying device for the oil reservoir engineering is simple in structure and convenient to operate, short-distance carrying can be conveniently performed on oil pipes, inconvenience brought by needing to use transport vehicle carrying or manpower carrying is avoided, and the labor force is greatly reduced; the oil pipe carrying device can realize simultaneous storing of the multiple oil pipes through rotationand fixation of the placing plates, the transfer efficiency is improved when the carrying is performed, the operating time is reduced, and convenience is brought to the oil reservoir engineering; andby means of the arrangements of the support plates and the supporting plates, quick supporting can be performed on the oil pipes, operations are conveniently performed when oil pipe hoisting is performed, and the oil pipe hoisting difficulty is reduced.

The invention provides a vertical water turbine upper frame lifting device. The device comprises a base, a frame support column, a coiling mechanism, a transverse bracket, a lifting frame and fixtures; the frame support column is fixedly mounted on one side of the base; the transverse bracket is mounted above the frame support column, and is vertically connected with the frame support column; an electric block is connected under a free end of the transverse bracket; the lifting frame is connected under the electric block; multiple fixtures are uniformly mounted at the bottom of the lifting frame; the transverse bracket is provided with a slide rail in the length direction; an electric slide block is connected above the electric block; the electric slide block is mounted on the slide rail;and a hydraulic lifting rod is arranged between the frame support column and the transverse bracket. The device solves the difficulty of no special lifting tool for upper frames, greatly reduces the lifting difficulty of the upper frames, realizes stable lifting and mounting of the upper frames by using the lifting frame and the fixtures, eliminates potential safety hazards, shortens the maintenance period, and greatly saves the manpower and material resources.

The invention discloses a gear-rack bolt lifting system and a lifting method thereof. The gear-rack bolt lifting system is arranged on a pile leg in a sleeving way, and comprises a moving ring beam, alifting rack, a lifting unit, a lifting foundation and a bolt mechanism, wherein the lifting foundation is arranged on a deck of an offshore platform; the lifting unit is arranged on the lifting foundation; the bottom end of the lifting rack penetrates through the lifting foundation; and the lifting rack meshes with a lifting gear. The intermittent lifting of the offshore platform is realized; and compared with a hydraulic bolt lifting system, the average lifting speed is faster, the gear-rack bolt lifting system is stable and reliable, the use of a lifting oil cylinder easy to leak and difficult to maintain is avoided, the lifting efficiency is high, and the average lifting speed can reach to 30m / h. The lifting rack is arranged on the bottom part of the moving ring beam, and no pile fixing chamber and a fixed ring beam is needed to be used, so that the structure is simplified, the cost is greatly saved, and the lifting difficulty is reduced.

The invention relates to a waggle-preventing device for a crane. The waggle-preventing device for the crane comprises an inhaul cable mechanism, a loading cable mechanism, a towing cable mechanism, aloading cable actuating device, a towing cable actuating device, a pulling block, a pulling block movable pulley and a loading pulley, wherein the loading cable mechanism comprises a loading cable fixed pulley, a loading cable pinch roller, a loading cable actuating device, a loading cable driving device and a loading cable; the towing cable mechanism comprises a towing cable driving device, a wing-shaped supporting rack, a towing cable, a towing cable pinch roller, a towing cable fixed pulley and a towing cable actuating device; the inhaul cable mechanism, the loading cable mechanism and thetowing cable mechanism jointly control the position of a weight in a space, and waggle of the weight is inhibited synchronously depend on a loading cable actuator and two towing cable actuators on thewing-shaped supporting rack. The waggle-preventing device for the crane provided by the invention is large in load and wide in hoisting spatial domain, can play a role of reducing waggle of the hoisted weight along the direction vertical to a lazy arm and the direction of the lazy arm quickly to a great extent, and can meet the demands in a long and narrow cargo placing environment.

The invention discloses a fixing piece for a deep-well pump and a lifting device comprising the fixing piece. The fixing piece for the deep-well pump comprises a hoisting fixture and limiting pieces;a clamping part and a hoisting part are arranged on the hoisting fixture; the clamping part is used for clamping a delivery lift pipe on the deep-well pump; the hoisting part is connected with a traction mechanism; and the limiting pieces are arranged on the hoisting fixture, and can make reciprocating motion along the hoisting fixture to get close to or far from the hoisting part, so as to seal or open the hoisting part. According to the fixing piece for the deep-well pump and the lifting device comprising the fixing piece, the deep-well pump is integrally hoisted away from an underground well, so that the lifting difficulty is lowered; and the deep-well pump is tightly connected with the hoisting fixture, so that the situation that the deep-well pump is unhooked from the hoisting fixturein the hoisting process is avoided and a safe working environment is provided for maintainers.

The invention discloses a method for constructing an arch rib of an upwardly supported box-shaped arch bridge. The constructed upwardly supported arch bridge includes left and right symmetrically arranged arch ribs. When constructing the constructed upwardly supported arch bridge arch ribs, the steps include: 1. Construction of the lower support structure of the bridge; 2. Arch rib construction, the process is as follows: steel arch support construction, translation slideway and lifting device installation, steel arch assembly, arch support frame jacking, arch rib construction first, arch The lowering of the support frame, the installation of the traversing drive device, the lateral movement of the arch support frame, the lifting of the arch support frame, the construction of the post-construction arch ribs and the removal of the arch support frame. The invention is reasonable in design, simple in construction and good in use effect. A steel arch frame is used to construct two arch ribs one after the other, and an arch support and lateral movement device is used to support and laterally move the steel arch frame, which can be simple and convenient. , Quickly complete the construction process of the two arch ribs, and the construction process is safe and reliable, which can effectively improve the construction efficiency of the overhead arch bridge.

The present invention provides a waterproof lightweight type pulling rod case, which comprises a box, wherein a front row of rollers and a rear row of rollers are respectively arranged on the front side and the rear side below the box, the interior close to the rear side inside the box is provided with vertical gas cylinders symmetrically arranged on the left and the right, the middle portion of the gas cylinder is separated to form an upper portion gas cylinder and a lower portion gas cylinder, the uppermost end and the lowermost end of the upper portion gas cylinder are communicated to the uppermost end and the lowermost end of the lower portion gas cylinder respectively through a first gas pipe and a second gas pipe, the upper portion roller seat of the rear row of the rollers is connected to a wheel rod upwardly extending into the lower portion gas cylinder, an upper sliding plug is arranged in the upper portion gas cylinder and is connected to an upwardly extending pulling rod, a lower sliding plug is positioned at the upper end of the lower portion gas cylinder when the upper sliding plug is positioned at the lower end of the upper portion gas cylinder, and the upper sliding plug and the lower sliding plug always maintain reverse movement. According to the present invention, the pulling rod case can be normally pulled in the case of the water on the road surface, and the assisting function can be provided during the climbing of the steps.

The invention discloses a lifting platform for lifting a large-span high-altitude corridor truss. The lifting platform comprises supporting steel plates, a reinforced concrete pier is arranged at thetop surface of a building, and a ground anchor steel plate is embedded in the reinforced concrete pier. Seismic isolation supports are arranged on the supporting steel plates, and an end truss is located on the seismic isolation supports. A cross beam at the rear end of the end truss is connected with the ground anchor steel plate through a ground anchor tie rod. Hoisting platforms are separatelyinstalled on both sides of the top of the end truss. The hoisting platforms include support columns, and the bottom ends of the support columns and stand columns on both sides of the front end of theend truss are connected in a welded mode. The rear sides of the top ends of the support columns are connected with the cross beam at the rear end of the end truss in a welded mode through diagonal tierods. Horizontal suspension beams are welded to the front sides of the top ends of the support columns, and the bottoms of the horizontal suspension beams are connected with the bottoms of stand columns on the front side of the end truss in a welded mode through support rods. The inner sides of the horizontal suspension beams are connected with the middle part of a cross beam at the top of the end truss in a welded mode through diagonal ligaments. The lifting platform has good stability, can reduce the total weight of lifting, reduces the difficulty of lifting, and facilitates the butt jointafter lifting. The lifting platform is convenient to erect and dismantle, and is beneficial to controlling the construction cost.