34results about How to "Meet the requirements of rapid construction" patented technology

The invention discloses a railway fastener dismantling device and an operating method thereof. The device is used for dismantling a fastener on a railway line, and comprises a support, an electric wrench, a sleeve and electromagnets, wherein handles are arranged on two sides of the upper part of the support, the electric wrench is fixed at the lower part of the support, the sleeve is connected with the lower part of the electric wrench, and the electromagnets are arranged on two sides of the support. A nut on the fastener is loosened by the electric wrench, the whole fastener is sucked up by magnetic poles at the bottoms of the electromagnets, and the fastener is enabled to automatically fall off after the electromagnets are powered off and demagnetized. According to the device and the operating method thereof, not only can the nut be dismantled, but also the whole fastener can be dismantled; not only is the labor cost reduced, but also the operation efficiency is improved at the same time.

The invention discloses an embedded track structure suitable for a middle-span and small-span bridge. The embedded track structure comprises a bridge top plate, a bridge deck cast-in-place layer, a connecting element, a reinforced concrete base, two track bearing grooves and two groove type tracks, wherein the bridge deck cast-in-place layer is cast on the bridge top plate; each groove type track is arranged in the corresponding track bearing groove in an embedded manner; the two track bearing grooves are embedded into the reinforced concrete base in parallel in the longitudinal direction; the reinforced concrete base is arranged on the bridge deck cast-in-place layer; the bridge deck cast-in-place layer and the reinforced concrete base are connected into a whole through the connecting element. The embedded track structure has the benefits as follows: by adopting the embedded track structure, the vibration reduction and noise reduction effects are good; the structure is simple, the self weight is light, structural requirements of a city bridge are reduced, the construction cost is reduced and city quick construction requirements are met; the connecting element adopts a rigid connection mode, so that the whole stability of the track structure on the bridge is improved.

The invention discloses a prefabricated and assembled narrow-web combined box girder structure, which comprises a box girder body and two side longitudinal beams respectively arranged at both ends of the box girder body, and a bridge deck is arranged on the top surface of the box girder body; An anti-collision zone is provided on the side of the upper part of each side stringer close to the bridge deck, and the crash zone includes a sealing plate, an anti-collision panel and an anti-collision zone fixedly connected with the side plate of the side stringer. Collision K brace, the anti-collision panel is located on the side of the anti-collision K brace away from the side longitudinal beam, the sealing plate is located above the anti-collision K brace, the anti-collision panel and the side longitudinal beam The beams are fixedly connected to the sealing plates respectively. The prefabricated and assembled narrow-web composite box girder structure and its construction method of the present invention have simple structure and convenient assembly, and can meet the requirements of rapid construction of urban bridges.

The invention provides a concrete prefabricated kerb demoulding auxiliary support frame. The concrete prefabricated kerb demoulding auxiliary support frame comprises a transverse connection beam and two mould support pieces, wherein cross sections of the two mould support pieces are roughly of a 'b' shape, and the mould support pieces extend in the longitudinal direction. The two mould support pieces are respectively arranged in a seated mode and fixed on two end portions of the connection beam. The two mould support pieces are arranged relatively and located on the same side of the connection beam. Seen from the longitudinal direction, the concrete prefabricated kerb demoulding auxiliary support frame is of a 'b d' shape. When a concrete prefabricated kerb is achieved in a prefabricated mode, fulfills requirements of demoulding and is demoulded, the support frame is utilized to conduct auxiliary demoulding. The kerb and a mould are placed on the demoulding auxiliary support frame in a suspending mode. Two end corner portions in the transverse direction of a concrete prefabricated kerb mould are respectively located and limited on the two mould support pieces. Workers can demould conveniently, and simultaneously the reasonable support frame height guarantees that a kerb manufactured product cannot be broken. The appearance quality of the concrete prefabricated kerb is protected, and the working efficiency is improved.

The invention relates to the field of architectural decoration, and provides a wall panel installation structure and installation method that are convenient and quick to install wall decorative panels, save time and effort, smooth decorative panels, and have good decoration quality. The wall decoration panel pavement construction period is long, the pavement process is time-consuming and laborious, the flatness is poor, and the decoration quality cannot be guaranteed. The panel, the horizontal bracing keel is fixed on the wall surface, and the vertical bracing keel is fixed on the back of the decorative panel. The horizontal bracing keel is a U-shaped structure with the opening end facing the decorative panel. There is a movable lock between the horizontal bracing keel and the vertical bracing keel. The two sides of the inner end of the movable lock are respectively elastically clamped on both sides of the opening end of the horizontal support keel, and the outer ends of the movable lock are hooked on the inner ends of the vertical support keel.

The invention discloses a focusing sounding type three-dimensional induced polarization advanced detection system and method loaded on a TBM. The advanced detection system comprises an electrode system, an electrode telescoping device, a multi-path rotation device, a cable system and an induced polarization detection instrument; the electrode system is arranged on a TBM cutterhead, a shield, a trolley and a tunnel side wall, wherein electrodes on the cutterhead, the shield and the trolley are loaded on the TBM through the electrode telescoping device; and the induced polarization detection instrument controls the electrode telescoping device to realize automatic telescoping control over the electrodes, telescopic state detection and contact state detection, and the multi-path rotation device is adopted to realize uninterrupted rotation of measurement signals, hydraulic oil paths and cutterhead water paths and realize load integration of the induced polarization detection system and theTBM. The system and the method have the advantages that the problem of induced polarization advanced detection of a source of water and mud inrush disaster of a TBM construction tunnel can be solved,the automation degree of measurement is high, the safety, the rapidness and the reliability are achieved, three-dimensional inversion imaging can be carried out on a water-contained body in the frontof a tunnel face, and therefore the safe and efficient construction requirements of the TBM construction tunnel are met.

The invention discloses a quick construction method for an over-crossing business line hangar tunnel T-shaped girder in narrow space. The quick construction method includes the following steps that ahangar tunnel foundation pit is dug according to a designed location and a hangar tunnel stand column is constructed; a hangar tunnel vertical girder is constructed, a bracket support is pre-buried and a gantry crane walking railway is set up on the bracket support; a distributive girder and a form board are laid on the top of the hangar tunnel vertical girder to be used as a T-shaped girder primary prefabricating platform, and a gantry crane is arranged on the gantry crane walking railway; a T-shaped girder is poured on the T-shaped girder primary prefabricating platform and hoisted to a vacant zone; if the vacant zone can not be laid fully, then the step is conducted repeatedly; the T-shaped girder primary prefabricating platform is demolished, and the form board is laid on the T-shapedgirder to be used as a T-shaped girder secondary prefabricating platform; a T-shaped girder is poured on the T-shaped girder secondary prefabricating platform and hoisted to a vacant zone and erectingof the T-shaped girder is completed; the T-shaped girder secondary prefabricating platform is demolished and auxiliary facilities are exerted; and other unnecessary facilities are demolished. The problem of insufficient prefabricating places can be solved and the risk of the hoisting operation near the business line is avoided.

The invention relates to an explosion-proof iron runner castable which comprises the following raw materials in percentage by weight: 55-80 percent of fusion tabular corundum, 10-30 percent of silicon carbide, 1-5 percent of soft clay, 2-5 percent of pure calcium aluminate cement, 1-7 percent of submicron powder, 0.5-1.5 percent of explosion-proof agent and 0.05-0.15 percent of water reducing agent, wherein the explosion-proof agent is a mixture of aluminum powder, aluminum lactate, explosion-proof fiber and boron carbide powder with the weight ratio of 1-2:2.5-4:1-2.5:2-4. The castable of the invention has no cracks after demoulding and drying and no spalling during baking, has the safe explosion-proof temperature of 800 DEG C increased from 500 DEG C, can be subjected to construction under heat state and rapid temperature rise without spalling and can meet the operating requirements of rapid construction of middle and small size blast furnace iron runner. The castable has long service life, can improve the environment of a casting house, greatly reduces the labor intensity of the workers, improves the quality of molten iron and enhances the application safety factor of the iron runner.