34results about How to "Eliminate buoyancy" patented technology

The invention relates to a combined metal filling box with slurry blocking pieces and a manufacturing method of the combined metal filling box, and belongs to the field of general building structures. The filling box (1) comprises an upper assembly (2), a lower assembly (3) and supports (4); dense meshes (7) are formed in strip-shaped metal sheets (5) in a die-cutting forming manner; metal pieces die-cut out of the meshes (6) form the slurry blocking pieces (7) tilted outwards; two meander lines (9) are formed on each metal sheet; the two ends of the metal sheets are bent by 90 degrees in the same direction along the meander lines, respectively, to form the upper and lower assemblies of a U-shaped structure each with three planes; at least three supports are embedded in the upper and lower assemblies and locked to each other; two U-shaped abutting edges between the upper and lower assemblies are connected to form the filling box. The filling box is convenient to produce, transport and mount, and good in mechanical properties; besides, a hollow floor system formed by use of the filling box is good in reliability, earthquake resistance and cracking resistance.

The gas compression method / system restricts flow of emulsified liquid-gas mixture through many substantially radial capillary tube-passages in a rotating disk by either one-way valves, narrowing the passages, hydraulic impedance and / or reinforcement of coriolis forces in terminal end tail segments of the capillary passages. Compressed gas is released from peripherally collected compressed gas-liquid emulsion (beyond the terminal ends of the tubes) in a arcuate peripheral disc space when the compressed gas bubbles emerge from the peripherally collected emulsion. A compressed gas drain draws off gas from the peripheral space. Liquid drain draws off liquid from the space. In different embodiments, radial outboard flow through the capillaries is effected by various one-way valves which may be a single valve in the passage or multiple valves. Coriolis force in tail segments is enhanced by angular displacement in the direction of rotation. Valves may be used in combination with such tail-end segments.

The invention relates to a ventilation metal filling tank and a method for manufacturing the same, and belongs to the field of structures of common buildings. The ventilation metal filling tank (1) comprises upper assemblies (2), lower assemblies (3) and supports (4). The upper assemblies and the lower assemblies are made of metal sheets (5), each metal sheet is divided into a face plate (7) and two side plates (8) by two bend lines (6) on the metal sheet, dense meshes (9) are formed in regions of the face plates, slurry stopping sheets (10) are formed by metal sheets punched from the meshes, two ends of each metal sheet are respectively bent by 90-degree angles along the corresponding bend lines towards the same direction to form the corresponding upper assembly and the corresponding lower assembly, each of the upper assemblies and the lower assemblies is of a U-shaped structure with three surfaces, at least three supports are embedded in each upper assembly and the corresponding lower assembly, and the upper assemblies and the lower assemblies are oppositely fastened with one another to form the ventilation metal filling tank. The ventilation metal filling tank and the method have the advantages that the ventilation metal filling tank is quite convenient to produce, transport and mount and good in mechanical property, and a hollow floor system with the ventilation metal filling tank is good in reliability, earthquake resistance and cracking resistance.

The invention relates to a light material filling piece with a hard base and a manufacturing method thereof, and belongs to the field of general building structures. The filling piece (1) comprises a body (2) made of a light foam material, a hard base (3), a reinforcing layer (4) and an isolating layer (5), wherein the body (2) is arranged on the hard base (3); the upper surface of the body (2) is provided with the reinforcing layer (4); the rest exposed outside surface of the body (2) is also provided with the isolating layer (5); the periphery of the hard base (3) is upwards warped (6) to wrap the lower part of the body (2) in the hard base (3); the filling piece (1) is filled in concrete (7); and the hard base (3) of the filling piece (1) is exposed from the lower surface of a concrete floor slab. The filling piece is very convenient to produce, transport and install; the shock and vibration resistance is high; a hollow floor system formed by the product has large span, light weight and good sound insulation and heat insulation good; and the reliability, the shock resistance and the crack resistance are high.

The invention discloses a method and a structure for preventing a pit-type building foundation floating. The method comprises the following steps that: a water collecting pit is arranged under the bottom plane of the pit; the bottom part of the water collecting pit is provided with a water overflow outlet; the water overflow outlet is provided with a valve; when the water table is higher than the flotage generated by the water overflow outlet to the pit, the valve of the water overflow outlet is opened, groundwater overflows into the water collecting pit, and then a water pump pumps out water in the water collecting pit so as to reduce the water table, eliminate or reduce the flotage generated by the groundwater to the pit, and prevent damaging the building because of the pit floating. The method and the structure adopt a novel anti-floating principle to eliminate the flotage generated by the water to the pit by water dredge and drainage, and are suitable for the ground conditions of various ground layers under the building. The method and the structure can prevent the floatation of the ground water to the pit damaging the pit or the building during heavy rains or accident great water accumulation.

The present invention relates to a safety vest, and more specifically, to a safety vest which has an LED, a light emitting device, adhered thereto, wherein the LED is covered with a light transmitting unit comprising a thin film light transmitting portion and a thick film light transmitting portion to protect the LED from external shock and to allow the vest to be recognized by other people by improving visibility from both long and short distances and also from the front and the sides, and a buoyancy generation means is provided to allow the vest to play a role as a life vest in water without a decrease in the worker's work ability.

The invention provides an underwater robot control method and device. The underwater robot control method comprises the following steps that the position information of an underwater robot is obtained, wherein the position information comprises the coordinate parameters of the underwater robot and the operation parameters of an engine. The operation state of the underwater robot is judged according to the coordinate parameters of the underwater robot and the operation parameters of the engine, wherein the operation state comprises a trapped state and an escaping state. When it is judged that the underwater robot is in the trapped state, an inflation signal is sent to an inflation electromagnetic valve of an escape air bag.When it is judged that the underwater robot enters the escaping state from the trapped state, a deflating signal is sent to a deflating electromagnetic valve of the escaping air bag, and the deflating electromagnetic valve recycles air to an air storage tank through acompressor. According to the method, the buoyancy of the air bag can be eliminated immediately after the underwater robot gets out of trap, so that the underwater robot does not need to interrupt theworking process.

The invention relates to an assembled breathable filling box and a fabrication method thereof, and belongs to the field of common building construction. The filing box (1) comprises an upper assembly (2), a lower assembly (3) and stiffeners (4), wherein the upper assembly and the lower assembly are prepared from strip-shaped metal sheets (5) which are smaller than 1mm in thickness; each metal sheet is divided into a panel (7), two side plates (8) and two additional sides (9) by four meander lines (6) on the metal sheet; dense meshes (10) are formed in the panel; two ends of each metal sheet are respectively bent 90 degrees along the meander lines towards different directions, so as to form the upper assembly and the lower assembly, which respectively include three surfaces and two sides and are in a U-shaped structure; at least two stiffeners are arranged in each direction in the upper assembly and the lower assembly; and the upper assembly and the lower assembly are oppositely buckled to form the filling box. The filing box provided by the invention is convenient to produce, transport and install and good in mechanical property; and a hollow floor system formed by the product is relatively good in reliability, shock resistance and crack resistance.

The invention discloses a high precision electronic balance which comprises a push-pull cover, a weighing tray, a base plate, a movable plate and a calibration device. The base plate is provided with four first through holes, a motor is fixed at the right end of the base plate, the movable plate is provided with four second through holes, a gear is fixed at the right end of the movable plate, and the motor drives the movable plate to move through the gear. The high precision electronic balance enables air temperature around the weighing tray to be close to air temperature around the calibration device through air convection, eliminates difference of buoyancy of objects in the weighing tray and calibration device buoyancy, and is small in measuring result error and accurate in measuring result.

The invention relates to a hollow floor filled by breathable boxes and a manufacturing method of the hollow floor and belongs to the field of general building structures. The hollow floor (1) comprises beam top iron pieces (2), beam bottom iron pieces (3), ribbed beam stirrups (4), plate top iron pieces (5), concrete (6) and breathable box combined bodies (7), wherein the beam top iron pieces, beam bottom iron pieces and ribbed beam stirrups form ribbed beams (8); the hollow floor plane is divided into multiple partitions (9) by two ribbed beams of which the directions are mutually orthogonal; the breathable boxes (10), steel wire meshes (11) and positioning separators (12) form the breathable box combined bodies (7); the breathable box combined body is mounted in each partition; the plate top iron pieces are assembled on the upper part of the breathable box combined body; the hollow floor is formed after concreting; and the thickness of the concrete on the lower part of the breathable box is more than or equal to 30mm. According to the hollow floor disclosed by the invention, raw material production and field floor construction are extremely convenient, and the hollow floor is large in span, light in weight and high in structural reliability, shock resistance and crack resistance.

The invention discloses a bottom expanding-multisection side expanding anti-pull prestressed anchoring gravel pile and a construction method and belongs to the technical field of foundation base structures. The gravel pile comprises a side expanding gravel pile body provided with multiple side expanding sections and at least one prestressed anchor cable / rod; an anchor disc is arranged at the top of the side expanding gravel pile body, and a bottom expanding base provided with an expanded bottom is arranged at the bottom of the side expanding gravel pile body. The construction method comprises the steps that a gravel pile hole is dug, and bottom expanding and side expanding are conducted; a hardcore bed is constructed; a reinforced concrete bottom expanding base is constructed, and the anchor cable / rod is fixed in the reinforced concrete bottom expanding base; the side expanding gravel pile body is constructed; the anchor disc at the top of the pile and an anchor plate are constructed, and anchor cable / rod prestressing force is exerted. According to the bottom expanding-multisection side expanding anti-pull prestressed anchoring gravel pile and the construction method, gravel is tightly pressed in a gravel hole through the anchor cable / rod so as to form the gravel pile body, so that the bottom expanding base, the gravel pile body and the anchor disc are made into a force-bearing whole, and thus the anti-pull capacity is effectively improved; in addition, the anti-shearing and anti-slip resistance between a pile body and a soil body is increased through the side expanding gravel pile body and the bottom expanding base, the stratum applicability of a structure is improved, and the influence of underground water is reduced.

A flush water volume regulator is provided, capable of canceling the buoyancy force acting on a water reservoir, wherein flush water in the water reservoir can be circulated with flush water in a flush water tank outside the water reservoir. The flush water volume regulator of the present invention has a water reservoir capable of holding a predetermined amount of flush water, having a water reservoir in which an opening is formed through which flush water inside water reservoir and flush water outside water reservoir can flow, and a float prevention means for causing a force to act on water reservoir in the opposite direction to the buoyancy force produced by flush water on water reservoir in flush water tank when water supply apparatus is supplying water into flush water tank.

The invention provides a hollow floor slab supported by a steel mesh body with holes, the cavity floor is composed of a main beam, a rib beam, concrete and a steel mesh body; the steel bars in the middle of the main beam are less than the steel bars at both ends of the main beam; The slump of the concrete is less than 200mm; the steel mesh body is composed of steel mesh and foamed cement blocks; the steel mesh is expanded steel mesh or punched steel mesh; Blocking the foamed cement block; the upper or lower end of the supporting foamed cement block has a prefabricated notch; the height of the foamed cement block matches the height of the inner space of the steel mesh; at least one supporting foaming block in the steel mesh body Cement blocks and two plugging foam cement blocks.

The invention discloses a sandbar sewage pipe, well anti-floating system, include anti-float plates, Bundle wire, clip rib, steel mesh, U-groove ribs, steel plate fasteners, Staples, bracing ropes, Anti-float plate are arranged at that bottom of the pipeline and bind to the pipeline through bundle wires, A loc wire rib is inserted into that inn side of the bundle wire, and a binding surface with the pipe is added. The steel bar mesh sheet is arranged below the pipe and below the sewage well. The steel bar mesh sheet is welded with U-groove reinforcement or steel plate buckle, and the U-groovereinforcement is not only welded with the mesh surface of the steel bar mesh sheet, but also bound or welded with the reinforcement of the bottom plate foundation; The steel plate buckle is welded onthe reinforcing bar mesh sheet or pierced from the bottom of the reinforcing bar mesh sheet; The clasp binds the wire drawing rope to the pipe, the U-groove rib and the steel plate fastener. The claspbinds the wire drawing rope to the pipe, the U-groove rib and the steel plate fastener. The invention also discloses a construction method of the sandbar sewage pipe and the well anti-floating system. The invention changes the traditional method of deep burying, increasing dead weight and increasing fixed foundation, and provides a stable and safe anti-floating system and construction method forsandbar high-water-level pipe and well construction.

The invention discloses a dam waterproof insulation structure and a manufacturing method. The dam waterproof insulation structure comprises a crush resistance structure plate and an insulation layer;the crush resistance structure plate is used for being fixed to the exterior facade or a slope of a dam, the crush resistance structure plate comprises an installing platform, the bottom end of the insulation layer is arranged at the installing platform, the inner side of the insulation layer is stuck to the exterior facade or the slope, and a first waterproof layer is arranged on the outer surface of the insulation layer. The crush resistance structure plate is arranged below the insulation layer, the crush resistance structure plate is fixed to the dam, upward pressure of water to the bottomof the insulation layer is transmitted to the dam, buoyancy of the insulation layer in water is eliminated, the phenomenon that the insulation layer is damaged or disengaged from the base layer of the dam body is avoided, and the insulation effect is ensured. The first waterproof layer is arranged on the outer surface of the insulation layer, the phenomenon that buoyancy is generated when the insulation layer is soaked with water is avoided, and the stability of the insulation layer is further ensured; the surface of the first waterproof layer is coated with an anti-ice pulling coating, so that the phenomenon that the insulation layer is damaged by an ice layer is avoided.

The invention discloses an anti-blocking and anti-floating grouting material for shield tunnel synchronous grouting, which comprises the following components: water, cement, water glass and a retarder, and is characterized in that the cement is 42.5-grade Portland cement; wherein the water glass is a sodium silicate aqueous solution with a baume degree of 30-40 degrees and a modulus of 3.1-3.3, and the retarder is an ammonium dihydrogen phosphate crystal with a purity of 99.0% or more, a pH value of 4.0-4.5 and a clarity of 3 or less. The grouting material not only has good anti-floating performance, but also can be used for quickly gelatinizing and eliminating buoyancy borne by the duct piece, so that the anti-floating requirement of the shield tunnel is met; the anti-blocking performanceis good, the situation that the grouting pipe is blocked due to the fact that slurry is gelled in the grouting pipe is avoided, and the construction efficiency is high; and meanwhile, the strength ofstones formed by grouting is high, so that the shield tunnel structure is more stable and reliable.

The invention relates to an assembly type steel net cage filling body and a manufacturing method thereof, and belongs to the field of ordinary building constructions. The filling body (1) comprises an upper component (2), a lower component (3), at least one inner strutting piece (4) and edge reinforcing pieces (5), wherein the upper component and the lower component are made of strip-shaped ribbed expansion nets (6) with the steel plate thickness smaller than 1.0 mm, each ribbed expansion net is provided with two meander lines (7) which divide the ribbed expansion net into one panel (8) and two side plates (9), the two ends of each ribbed expansion net are bent by 90 degrees along the meander lines in the same direction, the upper component (2) with three faces and two edges and the lower component (3) with three faces and two edges are formed, the upper component (2) is of a U-shaped structure, and the lower component (3) is of a U-shaped structure. The inner strutting pieces (4) are installed in the upper component and the lower component, and the upper component and the lower component are oppositely buckled to form the filling body (1). The assembly type steel net cage filling body has very good economical efficiency and applicability and plays a driving role in development of the building technology.

The invention relates to the field of seed cultivation, in particular to rising and falling type water pumping soaking seed cultivation screening equipment for a farm. The technical problems that seeds are scattered by buoyancy at the moment of entering water, and meanwhile, the seeds floating on the water surface expand and sink after being soaked in water and cover qualified seeds, so that the soaking rate of the seeds is reduced, germination is incomplete, and cultivation cannot be conducted are solved. According to the technical scheme, the rising and falling type water pumping and soaking seed cultivating and screening equipment for the farm comprises a supporting frame, a scraping mechanism and the like; and the support frame is connected with a scraping mechanism. According to the seed screening device, seeds are screened, buoyancy borne by the seeds when the seeds enter the water surface is eliminated in a water pumping and conveying mode, it is guaranteed that the seeds cannot be knocked off, are still evenly distributed and can be fully soaked, meanwhile, some impurities and unqualified seeds are screened out, and the working efficiency is improved.

The invention relates to a ventilating plastic box and a manufacturing method thereof, and belongs to the field of common building structures. The plane shape of the plastic box (1) is rectangular, and the ratio of the long edge length to the short edge length is smaller than or equal to two. The plastic box comprises an upper assembly (2) and a lower assembly (3), the upper assembly (2) is composed of a frame plate (4), stiffening ribs (5) and a top cover plate (6), and one or more exhaust holes (7) are formed in the top cover plate; the lower assembly (3) is composed of a frame plate (4), stiffening ribs (5) and a bottom support plate (8), and the bottom support plate (8) is bestrewn with dense vent holes (9). The stiffening ribs are uniformly arranged in the upper assembly and the lower assembly along the inner walls of the frame plates, the inner wall of the top cover plate and the inner wall of the bottom support plate, the upper assembly and the lower assembly are spliced in a vertically aligned mode, and the frame plates are matched. The plastic box is convenient to produce, install and transport and good in mechanical property, and a hollow floor formed by the plastic box is good in reliability, seismic performance and crack resistance.

The invention relates to a ventilation metal filling tank and a method for manufacturing the same, and belongs to the field of structures of common buildings. The ventilation metal filling tank (1) comprises upper assemblies (2), lower assemblies (3) and supports (4). The upper assemblies and the lower assemblies are made of metal sheets (5), each metal sheet is divided into a face plate (7) and two side plates (8) by two bend lines (6) on the metal sheet, dense meshes (9) are formed in regions of the face plates, slurry stopping sheets (10) are formed by metal sheets punched from the meshes, two ends of each metal sheet are respectively bent by 90-degree angles along the corresponding bend lines towards the same direction to form the corresponding upper assembly and the corresponding lower assembly, each of the upper assemblies and the lower assemblies is of a U-shaped structure with three surfaces, at least three supports are embedded in each upper assembly and the corresponding lower assembly, and the upper assemblies and the lower assemblies are oppositely fastened with one another to form the ventilation metal filling tank. The ventilation metal filling tank and the method have the advantages that the ventilation metal filling tank is quite convenient to produce, transport and mount and good in mechanical property, and a hollow floor system with the ventilation metal filling tank is good in reliability, earthquake resistance and cracking resistance.

The invention relates to an assembled ventilating filling box and a manufacturing method thereof, belonging to the field of general building construction. The filling box (1) includes an upper assembly (2), a lower assembly (3), and a stiffener (4). The upper assembly and the lower assembly are made of strip-shaped metal sheets (5) with a thickness of less than 1 mm. The bending line (6) divides the metal sheet into 1 panel (7), 2 side panels (8) and 2 additional edges (9). The ends are respectively bent 90° in the same direction along the bending line to form the upper and lower components of a U-shaped structure with 3 faces and 2 sides. Install at least 2 stiffeners in each direction of the upper and lower The upper and lower assemblies are snapped together to form a filling box. The filling box of the invention is convenient for production, transportation and installation, and has good mechanical properties, and the hollow floor formed by the product has good reliability, shock resistance and crack resistance.

The invention discloses a bottom expanding-multisection side expanding anti-pull prestressed anchoring gravel pile and a construction method and belongs to the technical field of foundation base structures. The gravel pile comprises a side expanding gravel pile body provided with multiple side expanding sections and at least one prestressed anchor cable / rod; an anchor disc is arranged at the top of the side expanding gravel pile body, and a bottom expanding base provided with an expanded bottom is arranged at the bottom of the side expanding gravel pile body. The construction method comprises the steps that a gravel pile hole is dug, and bottom expanding and side expanding are conducted; a hardcore bed is constructed; a reinforced concrete bottom expanding base is constructed, and the anchor cable / rod is fixed in the reinforced concrete bottom expanding base; the side expanding gravel pile body is constructed; the anchor disc at the top of the pile and an anchor plate are constructed, and anchor cable / rod prestressing force is exerted. According to the bottom expanding-multisection side expanding anti-pull prestressed anchoring gravel pile and the construction method, gravel is tightly pressed in a gravel hole through the anchor cable / rod so as to form the gravel pile body, so that the bottom expanding base, the gravel pile body and the anchor disc are made into a force-bearing whole, and thus the anti-pull capacity is effectively improved; in addition, the anti-shearing and anti-slip resistance between a pile body and a soil body is increased through the side expanding gravel pile body and the bottom expanding base, the stratum applicability of a structure is improved, and the influence of underground water is reduced.

The invention provides a novel diversion drainage structure of a post-cast strip and a construction method of the novel diversion drainage structure of the post-cast strip and belongs to the field of diversion drainage, aiming to overcome huge potential safety hazards due to the fact that an existing conventional post-cast strip structure develops into a structural crack after eroded by underground water, and the crack can expand gradually as time passes to lead to water seepage and even steel bar fracture, basement arching and elevation or displacement of an independent foundation of a bearing platform finally. The construction method includes that the middle plane of every water-stop steel plate is machined to form an 'omega' shape, the space of every 'omega' shape is filled with medium sand wrapped by geotechnical cloth, the outer surface of the geotechnical cloth is coated with cement paste, fast-ribbed formworks and the water-stop steel plates are fixedly bottomed through spot welding every other 500 mm, and the fast-ribbed formworks on the inner sides of every two adjacent water-stop steel plates are in butt joint sequentially.

The invention relates to an anti-floating glass toughening manure pit, comprising a pit body which is provided with a water inlet, a water outlet and a sewage cleaning port; the bottom part in the pit is fixedly provided with a guide flow valve in a sealing way; the guide flow valve comprises a valve body and a permeable adjusting cover; one end of the valve body is provided with a screw socket and the other end thereof is a fixed end which is fixed on the pit in a sealing way; the screw socket is screwed with the permeable adjusting cover; one step is arranged between the screw socket and the fixed end of the valve body; a sealing ring and an isolating plate are sequentially arranged on the step; and an area determined by the inner diameter of the fixed end of the guide flow valve on the pit is internally provided with through holes communicated with the outside. The anti-floating glass toughening manure pit has simple structure, can effectively eliminate the floatage of underground seeper to the glass toughening manure pit, avoiding the glass toughening manure pit from top-pressing the ground outward so as to cause protrusion and crack of the ground and the like, and is applicable to industrial production.