76results about How to "The structure is evenly stressed" patented technology

The invention discloses an underpinning and reinforcing structure for a seismic isolation bearing of an existing brick-concrete structure. The underpinning and reinforcing structure comprises an enlarged foundation arranged on the original foundation, a lower supporting pier arranged on the upper part of the enlarged foundation, a seismic isolation pad lower embedded board arranged on the upper part of the lower supporting pier, a seismic isolation pad arranged on the upper part of the seismic isolation pad lower embedded board, a seismic isolation pad upper embedded board arranged on the upper part of the seismic isolation pad, double supporting beams arranged on the upper part of the seismic isolation pad upper embedded board and a seismic isolation board arranged on the upper parts of the double supporting beams; pin keys are further arranged inside the double supporting beams; and the double supporting beams, the pin keys and the seismic isolation board are of an integrated type poured and molded structure. The invention further provides a construction method for the underpinning and reinforcing structure for the seismic isolation bearing of the existing brick-concrete structure. In this way, the underpinning and reinforcing structure is stable in structure, is high in safety, and has relatively good seismic resistance; besides, the mounting and constructing are relatively convenient, and the efficiency is high.

The invention discloses a reinforced plasterboard and a preparation method thereof. The plasterboard comprises a plaster base material layer, and a three-dimensional reinforced fiber fabric embedded into the plaster base material layer, wherein the three-dimensional reinforced fiber fabric consists of an upper layer, an intermediate layer and a lower layer; the upper layer and the lower layer are meshed plate fiber layers; the intermediate layer refers to an 8-shaped fiber framework; and the upper and lower ends of the 8-shaped fiber framework are respectively connected with the plate fiber layers on the upper and lower layers. The three-dimensional reinforced fiber fabric serves as a product reinforcement material, and three-dimensional directional enhancement of glass fibers is structurally realized, so that the plate structure is uniform in stress. Compared with gridding cloth layout or short fiber injection and pouring and other processes, the method has the advantages that the breaking strength and compressive strength are greatly improved, and a mechanical guarantee is provided for production of large-specification/size plates. The preparation method disclosed by the invention is simple in process, and the obtained product is good in performance.

The invention mainly discloses an integrated floor module and an assembling method thereof. The integrated floor module comprises a structure module of floor. Equipment system modules, ceiling joists and suspended ceiling boards are sequentially assembled on the lower surface of the structure module from inside to outside; a profiled steel sheet is installed on the upper surface of the structure module, concrete is poured to the upper surface of the profiled steel sheet on site, a floor surface layer is laid on the surface of the concrete, and a finished product of whole floor system is formed. The assembling method includes the steps that the floor system is prefabricated in a factory firstly, then the finished product of the floor system is carried to a construction site, and the floor system is quickly connected with on-site square columns. According to the integrated floor module and the assembling method, modular production of the floor system is achieved, convenience is brought to quick assembly, and industrialization, assembly and standardization of building industry are propelled.

The invention discloses an ink-jet printing trolley and an ink-jet printing device. The ink-jet printing trolley comprises a trolley support assembly, an ink-jet printing module, a curing module, a spray head control module and an ink supply device. The trolley support assembly is slidably arranged on an equipment cross beam for bearing the ink-jet printing module, the curing module, the spray head control module and the ink supply device. The ink-jet printing module is sued for printing images and texts on a printing medium. The curing module is used for curing the printed images and texts. The spray head control module is used for controlling the ink-jet printing module to print. The ink supply device is used for supplying ink to the ink-jet printing module. Relatively more spray heads can be loaded conveniently and rapidly, so that a relatively wider circuit board can be covered by single scanning of the trolley. The quantity of the arranged spray heads can be changed according to actual demand, and the printing demands on different width circuit boards can be met. The ink-jet printing trolley is balanced in structural stress and stable to operate, and can guarantee printing with high efficiency and high quality. The modules are conveniently detached and maintained at ordinary time.

The invention mainly discloses an assembling method of floor structural modules. Each floor structural module comprises a plurality of main beams, secondary beams and a plurality of box-type components, the main beams are connected to form an outer frame with the box-type components as unit connecting points, and the secondary beams are arranged in the outer frame defined by the main beams. The assembling method includes the steps that first, the structural modules are prefabricated in a factory; second, the finished structural modules are carried to a construction site, and the structural modules and on-site square columns are fast assembled and connected. According to the method, structural units for the floor modules are formed in the factory, welding is reduced, the quality of machining in the factory is improved, and the industrial degree of steel components is improved.

The invention provides a special-shaped-cross-section hot-rolled steel plate coil and a manufacturing method thereof. The cross section of the special-shaped-cross-section hot-rolled steel plate coil is composed of a base plate (1), a middle double-side thickening region (2), an end double-side thickening region (3) and an inner arc r1, wherein the lengthwise strength of the special-shaped-cross-section hot-rolled steel plate coil can reach 6-600 meters; the middle double-side thickening region (2) and the end double-side thickening region (3) are horizontally connected by the base plate (1) to form an integral body; and the middle double-side thickening region (2) and the end double-side thickening region (3) transit to the base plate (1) through the inner arc r1. The special-shaped-cross-section hot-rolled steel plate coil is prepared by finish rolling by using four-roller composite-orifice rollers and a matched technique. The special-shaped-cross-section hot-rolled steel plate coil is used for producing cold-roll-formed U rib steel, solves the technical problems of welding spot cracking and irrational structural strength caused by insufficient welding thickness on the two ends of the existing uniform-thickness U rib and reduced thickness of the bent angle part, enhances the stability and safety of the bridge, and lowers the manufacturing and maintenance cost of the bridge.

The invention discloses a horizontal loading test system for the bearing capacity performance of a U-shaped shield duct piece structure. The system comprises a duct piece support, a loading longitudinal beam, a reinforced concrete reaction wall, profiled steel reaction columns, a jack, an anchorage device, an active tensed steel strand and a passive tensed steel strand, wherein the duct piece support is provided with duct pieces which are spliced into a ring; a loading ring beam is arranged on the outer side of a duct piece ring; the loading ring beam is arranged on the outer side in a surrounding manner; the loading longitudinal beam is arranged on the outer side of the loading ring beam; the jack is arranged on the outer side of the loading longitudinal beam; the jack is connected with the reinforced concrete reaction wall through the active tensed steel strand anchored through the anchorage device; the reinforced concrete reaction wall is arranged inside the duct piece ring and is fixed through the profiled steel reaction columns; the profiled steel reaction columns are arranged on the inner and outer sides of the reinforced concrete reaction wall, and are connected with the jack through the active tensed steel strand anchored through the anchorage device; the profiled steel reaction columns are arranged on the inner and outer sides of the reinforced concrete reaction wall.

The invention relates to a municipal inspection well and a back excavation construction method thereof. The municipal inspection well is composed of a well cover, a well seat and a well barrel. The municipal inspection well is located in a road face structural layer, the road face structural layer comprises a road face bottom base layer and a road face compaction structure which are arranged from bottom to top sequentially. A ring beam is arranged on the well barrel, the bottom of the well seat is fixed to the ring beam through an expansion bolt, and the well cover is arranged on the well seat; concrete is poured between the inspection well and the road face compaction structure as well as between the inspection well and the road face bottom base layer, a rebar framework is pre-buried in the concrete at the ring beam, a glass fiber soil engineering grid layer and an asphalt concrete layer are arranged above the concrete and the road face compaction structure from bottom to top sequentially, the asphalt concrete layer is flush with the upper surface of the well cover, and the bottom of the concrete is 50-55 cm deeper than the bottom of the road face bottom base layer. The municipal inspection well has the characteristics of being safe, suitable and the like, has good popularized and practical values, and can produce good economic benefits after being widely applied and promoted.

The invention discloses a high-pressure reverse-blowing ash-removing bag filter system, which is composed of a high-pressure blowing ash-removing system, an upper box body cover, an ash-removing nozzle, an upper box body, a clean air discharging pipe, a filtering cloth bag, a filter body, an ash-containing air inlet pipe, a support, an ash-collecting hopper, an ash-unloading fastener, and a lower box body. The filter body has a ball shaped structure, and thus has the characteristics of uniform stress, good anti-detonating ability, and compact structure; the process of reverse blowing is carried out by adopting a high-pressure blowing ash-removing system, thus the ash can be effectively removed, and the service life of the cloth bag can be prolonged; the system has the characteristics of strong ash-removing performance, high ash-collecting efficiency, low discharge density, simple maintenance, and low energy consumption, and achieves the goal of safe ash-removing.

The invention relates to the technical field of bridge construction and in particular relates to a steel pipe arch bridge cable-stay connecting device and connecting method. The steel pipe arch bridgecable-stay connecting device disclosed by the invention comprises a cable-stay connector connected with a cable stay, wherein a hoisting component is connected onto a steel pipe arch and is hinged with the cable-stay connector by virtue of a rotating pin. According to the connecting device, the cable-stay connector is hinged onto the steel pipe arch, so that the cable-stay connector can adapt tothe angle change of the cable-stay so as to rotate when the angle of the cable-stay is changed. Therefore, the uniform stress of the cable-stay connector is ensured, the cable-stay connector is alwayspositioned in a relatively free state, and normal installation and quality safety of the steel pipe arch bridge is further ensured.

The invention relates to the technical field of relays, and particularly relates to an electromagnetic relay with a button buffer mechanism. The electromagnetic relay comprises a shell, a button assembly and a contact system positioned in the shell, the shell is provided with a mounting seat for mounting the button assembly, the button assembly comprises a button and an elastic piece matched with the button, the bottom of the button is provided with a buffer key rod, and the buffer key rod can extend into the shell to be in movable contact with an armature so that a contact system is connected or disconnected, and the test work of a load end circuit of the electromagnetic relay is completed. The buffer key rod is provided with an action end which is in contact with the armature so that the buffer key rod can buffer and disperse the pressure generated by the action end and the armature which are pressed against each other. And the failure of the detection function of the on-off of the circuit of the electromagnetic relay caused by the breakage of the button due to overlarge and concentrated pressure is prevented.

The invention belongs to the technical field of articles of daily use, and relates to a cookware handle, in particular to a detachable cookware handle which is convenient to detach, firm in connection and not prone to damage. The detachable cookware handle comprises a movable clamping piece, a rotary grooved wheel, a handle, a rotary stem and a screw. The movable clamping piece is provided with a first protrusion and a first sliding chute, and the first protrusion and the first sliding chute are located on the same straight line. A groove is formed in the handle. The rotary grooved wheel is provided with a second sliding chute, second protrusions and a through hole, and the screw penetrates through the through hole and is in screwed connection with the bottom of the groove. The first sliding chute is in sliding fit with the screw, the first protrusion is in sliding fit with the second sliding chute, and the second sliding chute is arc. The radius of curvature of the arc second sliding chute gradually increases from the position close to the first protrusion to the position far away from the first protrusion. The arc center distance difference of the two ends of the arc second sliding chute is equal to the length of the first sliding chute. The rotary stem is provided with a plurality of second clamp grooves, and the second clamp grooves are connected with the second protrusions in a clamping mode.

The invention discloses a steel pipe truss prestress hollow laminated slab. The steel pipe truss prestress hollow laminated slab is composed of a prestress concrete thin plate, high-strength prestresssteel wires, a steel pipe truss and a pentahedron hollow cavity. According to the steel pipe truss prestress hollow laminated slab, all the advantages of high rigidity of the steel pipe truss, high prestress strength and a hollow cavity are combined and integrated into one prefabricated part, the factory machining process of the part is simple, only the prefabricated part needs to be installed onsite, no support or few supports are needed, and no formwork is needed; and the construction process is simple, materials are saved, the self-weight is light, and the application advantages in large-span constructional engineering are particularly obvious.