34results about How to "Low amortized cost" patented technology

The invention discloses a welded combined T-shaped steel column correcting device and method. The correcting device is composed of multiple correcting units which are on the same straight line. Each correcting unit comprises a platform support, two L-shaped clamps and a jack. Each platform support is formed by welding two stand columns and a cross beam. A vertical beam is arranged on the upper surface of each cross beam, wherein each vertical beam is perpendicular to the corresponding cross beam. The two ends of each vertical beam are provided with two rectangular connecting blocks, wherein every two rectangular connecting blocks are parallel with the corresponding cross beam. Each connecting block is uniformly provided with multiple threaded holes. Each L-shaped clamp is integrally formedby a transverse plate and a vertical plate. Each transverse plate is provided with threaded holes matched with the threaded holes in the connecting blocks. Threaded connecting pieces penetrate the threaded holes in the transverse plates and the threaded holes in the connecting blocks, so that the two L-shaped clamps are fixedly connected with the two connecting blocks correspondingly. Each jack is arranged between the corresponding vertical beam and a to-be-corrected welded H-shaped profile steel web plate. A base of each jack tightly jacks the corresponding vertical beam. The stroke end of each jack tightly jacks the corresponding to-be-corrected welded H-shaped profile steel web plate. The welded combined T-shaped steel column correcting device has the advantages of being simple in structure, easy to operate, low in cost, high in efficiency and the like.

A method for monitoring a device (1) for regulating the flow of a gas, comprising a flow conduit (2) and a shutter assembly (3) that defines a restriction (4) in the flow conduit (2). The method comprises the following operations: causing the transit of gas through the flow conduit (2); defining a sequence of time intervals (Z1...Zn) of corresponding durations (t1...tn); during each time interval(Zi), determining a value of density (di) and a value of velocity (Vi) of the gas at the restriction (4); calculating the product of the value of density (di), of the value of velocity (Vi), of the duration (ti) of the time interval (Zi) and of a correction coefficient (ki) to obtain a corresponding value of equivalent wear (ui); for each time interval (Zi), adding all the values of equivalent wear (u1... ui) calculated for the current time interval (Zi) and for the preceding time intervals (Z1...Z(i-1)) to obtain a cumulative value (cui); comparing the cumulative values (cui) with a predefined limit value (cu*), corresponding to a condition of maximum wear allowable for the shutter assembly (3), to obtain an indication of the condition of efficiency of the shutter assembly (3).

The invention discloses a simply supported prefabricated integrally-cast superposed bridge. The prefabricated integrally-cast superposed bridge comprises inverted T-shaped prestressed prefabricated beam parts, cast-in-situ parts and horizontal baffles, and is characterized in that each cast-in-situ part comprises a cast-in-situ plate and a cast-in-situ superposed part at the upper part of the beam part; pretensioned prestressed steel strands are embedded in the upper parts of a web plate and a lower flange of each inverted T-shaped prestressed prefabricated beam part; the horizontal baffles adopt prefabricated plates, and are longitudinally arranged at intervals between the web plates of the adjacent prefabricated beam parts at the two ends of each beam part and positioned above the flanges of the prefabricated beam parts; and the inverted T-shaped prestressed prefabricated beam parts adopt manufacturing moulds commonly used with buildings, and mould plates are good in commonality, convenient to mount and dismount, high in working efficiency and low in amortized cost.

A T-shaped component manufacturing die comprises a web side die body, a flange side die body and a pedestal terrace. The T-shaped component manufacturing die is characterized in that the web side die body comprises two vertical boards and a top board, the lower ends of the two vertical boards are connected with horizontal L-shaped beams and connected with rhombic retraction jacks in a spaced mode in the longitudinal direction, the flange side die body comprises two side boards and is connected with the pedestal terrace through a bolt, and the width of the upper opening of the flange side die body is smaller than that of the lower opening of the flange side die body. As a door-shaped side die body is adopted, not only can a rectangular component be manufactured, but also a T-shaped or inverted-T-shaped column and a T-shaped or inverted-T-shaped beam can be manufactured by combining the flange side die body, T-shaped columns or beams with different widths and different heights can be manufactured, universality is high, and use efficiency is high.

The inclined wedged fixture and assembling and disassembling tool for building formwork includes polished rod, inclined wedge and characterized inclined sleeve being one long flat steel pipe with hole in the same axial inclination as that of the inclined wedge. The polished rod is penetrated into the hole of the inclined sleeve, and the inclined wedge is wedged into the interval between the polished rod and the inclined sleeve hole. The present invention has separated fixture and assembling and disassembling tool, the formwork position may be regulated with installing pliers with crank link mechanism, and the fixture may be detached with the inclined wedge. The technology of the present invention is simple and reliable, and has easy assembling and disassembling and low cost.

The invention discloses a construction method of a movable assembled light formwork cast-in-place box culvert. The construction technological process is as follows; step 1, an assembled light formwork structure is designed and manufactured; step 2, formwork entry inspection and assembly are carried out; step 3, a box culvert foundation pit is excavated, and a foundation is treated; step 4, a construction bottom plate, a guide wall and wall body reinforcing steel bars are installed; step 5, a core mold and an outer mold are installed; step 6, roof reinforcing steel bars are installed; step 7, a plug plate is installed; step 8, the side wall and top plate concrete are poured and the concrete is cured; step 9, the outer mold is disassembled; step 10, the edge formwork is disassembled and moved; step 11, the middle formwork is disassembled and moved; and step 12, subsequent segment construction is conducted. The cast-in-place reinforced concrete box culvert is suitable for cast-in-place reinforced concrete box culvert construction in highway, railway, water conservancy and municipal pipe gallery projects.

The invention relates to an electric heating film maintaining trapezoidal beam film. The electric heating film maintaining trapezoidal beam film comprises a U-shaped rib, a bottom plate, a side plate,a horizontal rib, an electric heating film, a heat-insulating layer and a protective plate, wherein the horizontal rib is arranged on the upper part of the side plate and extends outwards; the bottomplate and the side plate are in rigid connection; the bottom plate and the side plate are shaped like a horn mouth with a big upper part and a small lower part; the electric heating film adheres to the outer surfaces of the bottom plate and the side plate; the heat-insulating layer is arranged on the outer side of the electric heating film; and the protective plate covers the outer side of the heat-insulating layer. After concrete is formed in a mold, the surface of the mold can be directly heated, so that the electric heating film maintaining trapezoidal beam film is simple to operate and high in maintenance speed; furthermore, the horn mouth-shaped template is adopted, a bottom mold and a side mold are connected into a whole, and a precast beam can directly perform lifting and demolding, so that the mold supporting and disassembling process is omitted.

The invention provides a prestressed special-shaped trough plate. The prestressed special-shaped trough plate comprises a special-shaped concrete slab body and prestressed steel strands buried in thespecial-shaped concrete slab body and taken as main reinforcements. The prestressed special-shaped trough plate is characterized in that the special-shaped concrete slab body comprises a face plate and ribbed beams, the face plate and the ribbed beams are integrated into a whole by pouring, an expanded section flange is arranged at the bottom of each ribbed beam, and longitudinal placing notches are formed in the two sides of the face plate. With the adoption of the prestressed special-shaped trough plate provided with the expanded section flanges at the bottoms of the ribbed beams, the bending resistance of the component is greatly improved, the bearing capacity is improved under the condition of the fixed height of the trough plate, the height of the trough plate is reduced under the condition of the same live load, and meanwhile, the invert arch cracking of the component is effectively controlled under the joint action of the special-shaped concrete slab body and the prestressed steel strands.

An electric heating film curing prefabricated component die comprises a concrete prefabricated component forming template, an electric heating film and a heat preservation layer. The concrete prefabricated component forming template comprises a panel making direct contact with the concrete surface. The electric heating film is attached to the outer side of the panel. The outer side of the electricheating film is provided with the heat preservation layer. After concrete is poured in the die and formed, temperature rise can be directly conducted on the surface of the die, operation is simple, construction is convenient, the heat energy conversion rate is high, the curing speed is high, the die circulation efficiency is high, and the electric heating film curing prefabricated component die can be used for manufacturing prefabricated components in any site.

According to the method and device for adjusting the position of the gravity center of a blade of a wind driven generator. A counterweight point is determined on the blade of the wind driven generatorto be hoisted, a liquid balancing device is arranged on the counterweight point, a built-in counterweight device arranged in the blade of the wind driven generator or an external counterweight devicearranged outside the blade of the wind driven generator, and the gravity center position of the blade of the wind driven generator to be hoisted is adjusted to the position of the gravity center of the blade required by a single-blade lifting appliance by adjusting the mass of the counterweight liquid in the liquid balancing device. According to the method and device, universality of the single-blade lifting appliance is greatly improved, the using efficiency of the single-blade lifting appliance is improved, the unit development progress is accelerated, and the hoisting and spreading cost ofblade is reduced.

The invention discloses a lining circular ring assembled by prefabricated segments with corbel connecting bases and an assembling method of the lining circular ring. The lining circular ring is provided with symmetrical double-sided wedge-shaped rings. The capping block assembling point is located at the 0-degree position of the lining circular ring, the ring width of the outer diameter of the circular ring at the point is the minimum value or the maximum value, the point, opposite to the capping block, of the 180-degree point is a first standard block, and the points, adjacent to the two sides of the first standard block, of the capping block are second standard blocks. The inner arc surface of the second standard block and the inner arc surface of the adjacent block are each provided with a corbel connecting base which is integrally formed and protrudes out of the inner arc surfaces, each corbel connecting base is composed of a connecting base face in the horizontal plane direction and a connecting base face in the vertical plane direction, the four corbel connecting bases are symmetrically distributed in the lining circular ring, and the formed lining circular ring is in a mode1 or a mode 4. The top sealing block and the adjacent blocks on the two sides are spliced into a whole to rotate by 180 degrees around the Y axis to be in place, and the first standard block and the standard blocks sequentially spliced with the first standard block are spliced into a whole to rotate by 180 degrees around the Z axis to be in place in a mirroring mode to form a lining circular ringin a mode 2 or a mode 3. The universality of the segment is improved, and drilling and steel bar planting on the inner arc surface of the segment are avoided.

The invention relates to an assembled parallel straight-through type sunlight heating curing kiln and an installation method thereof. In an existing prefabricated part supply mode, prefabricated parts are produced in advance through a prefabricated part factory and then conveyed to a construction site through a transport vehicle, the prefabricated part factory is usually far away from the construction site, and the mode prefabricated part factory needs operation cost as an enterprise main body. The assembled parallel straight-through type sunlight heating curing kiln is formed by transversely and/or longitudinally assembling N integrated type steel supporting units (1) of a multi-layer stacking part production die table. Each integrated type steel supporting unit of the multi-layer stacking part production die table is of a rectangular frame structure defined by a plurality of vertical steel supports (5) and a plurality of transverse steel supports (6), each vertical steel support is fixedly provided with a plurality of layers of cantilever guiders in the height direction, and the cantilever guiders, located on the same layer, of the multiple vertical steel supports are the same in height. The installation method is used for the assembled parallel straight-through type sunlight heating curing kiln.