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237results about How to "Reduce overall height" patented technology

Friction-spring three-dimensional compounded shock isolating pedestal

The friction spring three-dimensional composite shock-proof bearing belongs to the shock insulation and damping control area. The application of the prior three-dimensional composite shock-proof bearing into the large span mesh roof structure has the following problems: (1) the level shock-proof bearing is series-connected with the vertical shock-proof device, the height of the bearing is large, so it is lack of stability ; (2) the horizontal displacement of the structure under earthquake is large, (3) it is lack of vertical pulling-proof ability, the bearing rotational capacity is insufficient. The composite shock-proof bearing in the invention mainly includes horizontal shock-proof device and vertical shock-proof device, the whole appearance of bearing is cylindrical. The horizontal direction of the bearing uses the plate slip shock-proof device to lower the height of bearing, and the stability is effectively guaranteed, at the same time the horizontal direction also is equipped with reset and spacing device to make the bearing has reset and spacing functions. The vertical direction uses spring shock-proof and has rational rotary capability through the structure design. In addition, the integral bearing in the invention has the anti-pulling performance.
Owner:BEIJING UNIV OF TECH

Inner roof external climbing type formwork construction platform for super high-rise building construction

The invention discloses an inner roof external climbing type formwork construction platform for super high-rise building construction. The inner roof external climbing type formwork construction platform comprises a hydraulic creeping formwork system arranged on the outer side of a building and located on building walls and a jacking platform system arranged on the inner side of the building and located between adjacent building walls. The jacking platform system comprises a climbing device, an operating platform arranged on the climbing device and wall-attached embedder parts installed on the building walls and used for the climbing device to climb and attach. The hydraulic creeping formwork system adopted on a building external wall and the jacking platform system adopted on the inner side of the building and located between the building walls simultaneously operate to replace a traditional integral jacking type construction platform, horizontal supporting steel beams are not needed, oil cylinder climbing can be achieved only by installing the wall-attached embedder parts on the building walls, the total height of the construction platform and a supporting frame body of the platform is decreased, and a construction difference between a vertical structure and a horizontal structure is decreased, so that the hydraulic climbing system does not influence horizontal structure construction.
Owner:中国华西企业股份有限公司 +2

Process for fabricating a micro-electro-mechanical system with movable components

A process for fabricating a micro-electro-mechanical system (MEMS) composed of fixed components fixedly supported on a lower substrate and movable components movably supported on the lower substrate. The process utilizes an upper substrate separate from the lower substrate. The upper substrate is selectively etched in its top layer to form therein a plurality of posts which project commonly from a bottom layer of the upper substrate. The posts include the fixed components to be fixed to the lower substrate and the movable components which are resiliently supported only to one or more of the fixed components to be movable relative to the fixed components. The lower substrate is formed in its top surface with at least one recess. The upper substrate is then bonded to the top of the lower substrate upside down in such a manner as to place the fixed components directly on the lower substrate and to place the movable components upwardly of the recess. Finally, the bottom layer of the upper substrate is removed to release the movable components from the bottom layer for floating the movable components above the recess and allowing them to move relative to the lower substrate, while keeping the fixed components fixed to the top of the lower substrate.
Owner:MATSUSHITA ELECTRIC WORKS LTD

Novel structural high-pressure balance valve

The invention relates to a novel structural high-pressure balance valve, which comprises a valve body (1), a stuffing box assembly, a valve rod assembly, a support assembly, a hand wheel assembly, a four-element ring (10) and a split jacket (26), wherein a concave groove is arranged on the inner wall of a top hole of the valve body, the four-element ring (10) is arranged on the concave groove, aninner ring of the four-element ring (10) protrudes out of the concave groove, and the bottom of a projection part is in contact with the top surface of the stuffing box assembly; the valve rod assembly comprises a valve rod (9) inserted into the stuffing box assembly and a valve clack (2), the top of the valve rod (9) is connected with the support assembly through the split jacket (26), the valveclack (2) is a cylindrical cavity, a pressing plate is arranged in the valve clack (2), an inner wall of the valve clack (2) at the upper part of the pressing plate is a screw thread, the screw thread is connected with a thread spacer sleeve (31), the bottom of the valve rod (9) is inserted into the thread spacer sleeve (31), the bottom of the valve rod (9) protrudes, the bottom of the thread spacer sleeve (31) is concave, the valve rod (9) and the thread spacer sleeve (31) are matched, so that the valve rod (9) and the thread spacer sleeve (31) are in lapped joint; the stuffing box assembly comprises a stuffing box (7), a first O-shaped sealing part, a second O-shaped sealing part and a third O-shaped sealing part; an O-shaped ring is an F4 type all-coated fluororubber O-shaped sealing ring, and is an axially assembled structure; and fluid balance holes are arranged on the pressing plate in the valve clack (2) and the thread spacer sleeve (31). The novel structural high-pressure balance valve, provided by the invention, has the advantages of simple structure, convenience for use and small volume.
Owner:YUEYANG ZHUSHENG VALVE PIPELINE

Hexagonal or octagonal tangential arrangement of anthracite burning single-fireball direct-flow combustors

The invention provides hexagonal or octagonal tangential arrangement of anthracite burning single-fireball direct-flow combustors, which is characterized in that: two groups of combustors are arranged on each water-cooling wall or two groups of combustors are arranged on two opposite water-cooling walls of a hearth respectively and a group of combustors are arranged on the other two opposite water-cooling walls respectively, each group of combustors are at least divided into a small group; and each small group of combustors are vertically provided with at least two primary air pulverized nozzles and three secondary air pulverized nozzles at intervals. Each coal mill is connected with eight or six primary air pulverized nozzles which have the same level with that of the coal mill. The start and stop of each coal mill affect the running of the eight or six primary air pulverized nozzles which are on the same layer. The hexagonal or octagonal tangential arrangement of the anthracite burning single-fireball direct-flow combustors can decrease the number of the air pulverized nozzles in a single group of combustors on the premise of meeting the requirements of the thermal power of a single air pulverized nozzle and the number of the total air pulverized nozzles, allows the thermal load qHr of a wall in a combustor area to be relatively high, and guarantees the timely ignition of an pulverized anthracite flow and low-load combustion of a boiler without oil.
Owner:SHANGHAI BOILER WORKS

Hydraulic formwork creeping system and formwork creeping method

InactiveCN104120877AOvercome the defect that the formwork cannot be climbed from the bottomReduce overall heightForms/shuttering/falseworksAuxillary members of forms/shuttering/falseworksHydraulic ramHydraulic pressure
The invention discloses a hydraulic formwork creeping system and a formwork creeping method. The hydraulic formwork creeping system comprises a formwork for casting concrete to form a wall, an outer wall rail and a supporting platform. The supporting platform is arranged on the top of the wall. The formwork is arranged below the supporting platform and connected with the supporting platform. The hydraulic formwork creeping system further comprises a formwork creeping device for driving the formwork to creep, and the formwork creeping device is provided with an inverted hydraulic oil cylinder. The hydraulic formwork creeping system further comprises a first beam and a second beam respectively connected with the hydraulic oil cylinder. The supporting platform, the outer wall rail and the first beam are fixed to form a whole in space. The two ends of the first beam and the two ends of the second beam are respectively fixed to the cast wall, the hydraulic oil cylinder stretches out and draws back to drive the first beam and the second beam to ascend alternately so that the whole formed by the supporting platform, the outer wall rail and the first beam can drive the formwork to ascend along with the ascending of the hydraulic oil cylinder, and formwork creeping can be achieved. According to the hydraulic formwork creeping system and the formwork creeping method, the height of the overall formwork creeping is reduced, the hydraulic formwork creeping system is simple in structure and convenient to implement, and safety construction is facilitated through reduced dead weight.
Owner:SHENZHEN TECHEN SCI & TECH CO LTD

Coal dust thickness-thinness separating and distributing structure of single-fireball eight-corner direct-flow burner

The invention discloses a coal dust thickness-thinness separating and distributing structure of a single-fireball eight-corner direct-flow burner. Eight groups of burners are arranged on a boiler body, two groups of the burners are arranged on each water cooled wall, each group of the burners comprises a plurality of the burners with nozzles facing to the same direction, and a center line of each nozzle of the eight groups of the burners forms an imaginary inscribed circle along the same tangential direction in a boiler chamber. In the coal dust thickness-thinness separating and distributing structure, the eight groups of the burners are distributed on four water cooled wall of a boiler, therefore, the coal dust concentration of a thick coal dust area is increased, the heat load qHr of the wall face of the area of the lower burners is higher, and the burning temperature in the area can achieve the requirement of stable-combustion of firing of anthracite. The distance of jet flow from outlets of the nozzles to a downstream adjacent-angle airflow is short, a lower primary air coal dust airflow speed can be adopted, the intensity of a heat flow of the outlets of the nozzles is high, and passing convection and radiation heat transfer amount are improved to ensure timely firing of the airflow of anthracite coal dust and steady burning of the boiler in low load without oil.
Owner:SHANGHAI BOILER WORKS
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