693results about How to "Improve shock resistance" patented technology

An electrical connector consists of a plug connector and a receptacle connector to be fitted. An insulator is supported only by plug contacts each provided between second and third fixed portions with an elastic portion having at least one snaked portion so as to be floating in a housing. The shape of the second contact portion of each of the plug contacts is substantially in the form of a plate-shaped piece so that the second contact portion of the plug contact and the first contact portion of a receptacle contact are caused to contact each other in line contact at one location, and the elastic portion is arranged within a range from a position below the second contact portion to a position below the insulator. The electrical connector thus constructed is superior in resistance to vibration, and achieves space-saving and floating of the insulator.

The invention relates to a connection structure of a building composite floor slab and a steel bar truss shear wall, and belongs to the field of building members. a one-way or two-way prestressed steel bar and a light steel rid are embedded in a prefabricated slab at the lower part of the connection structure; an oblong hole is formed in the end part of the light steel rib; an upper layer steel bar of the composite floor slab is paved in a notch in the upper part of the light steel rib; poured-in-place concrete is positioned at the upper part of the prefabricated slab to cover the light steel rib and the upper steel bar; a steel frame is arranged at the periphery of the shear wall, and is welded with a steel bar truss together; a pre-buried steel plate is arranged on the wall surface of the shear wall; a steel plate bracket, a reinforcing steel bar and a connecting plate all connected with the composite are welded onto the pre-buried steel plate; a concave pit is formed in the upper end of the shear wall; a short pattern steel fastener is welded on the steel frame at the lower end of the shear wall; the shear wall is connected with the composite floor slab; the composite floor slab is directly placed on the steel plate bracket of the shear wall, and is fixed in a manner that a bolt penetrates through the oblong hole in the end part of the light steel rib and the oblong hole in the connecting plate welded on the pre-buried steel plate of the wall surface of the shear wall; meanwhile, the reinforcing steel bar welded on the pre-buried steel plate of the wall surface of the shear wall is connected with the composite floor slab.

The invention discloses a composite macromolecular waterproof board, which consists of high density polyethylene, linear low density polyethylene, a thermoplastic elastomer, an antioxidant, an anti-ageing agent and a filler. The composite macromolecular waterproof board has high permeability resistance, high barrier property, high penetration resistance, resistance to acid, alkali and various chemical substances, high elongation and wear resistance, is free from chemical pollution, and can effectively improve the surface energy of polyethylene. The invention also discloses a method for preparing the composite macromolecular waterproof board.

A vacuum pump has a pump mechanism section that performs evacuation to set a space to be evacuated to a predetermined degree of vacuum and an electric motor section for driving the pump mechanism section. A controller of the vacuum pump executes deceleration control to decrease a rotational speed of the electric motor section when an increase in load torque of the vacuum pump per unit time abruptly changes upward.

The invention relates to the airbag type package material field, in particular to a manufacturing process of an airbag type vibration isolating pad, comprising the following steps: 1) bundling a TPU chip material, broadening 2 cm for four sides on the basis of a product specification area, and cutting into a flaky material; 2) placing the flaky material in a first moulding mould; 3) pressing a platen on the flaky material and fastening the platen; 4) manufacturing a plurality of grooves on the flaky material by a molder through vacuum heating in a suction manner, wherein the heating temperature is 400+/-10 DEG C, the running speed is 0.7m/min, the vacuum degree is 20kg and the pressure is maintained for 6s; and 5) placing the material with a plurality of independent grooves in a second moulding mould, stacking a layer of fabric to form a hollow shape, deflating gas in the second moulding to form gas chamber negative pressure, regulating a pressure valve according to the pressure requirement of the product on the airbag, switching on a welding machine, using current of 2.1A to generate high frequency current for 10s, preserving the pressure for 5s, switching off all gas inlet passages of all gas chambers, and pressing and sealing into respective independent airbags. The manufacturing process is simple, and the manufactured airbag type vibration isolating pad has good vibration isolating effect, and can effectively protect office equipment such as mobile computers and the like.

The invention relates to a building adopting an aseismatic precasted reinforcing steel truss shear wall composite structure, and belongs to the architectural field. The building adopts the scheme that reinforcing steel truss concrete shear walls provided with steel frames and composite floor slabs with prestressed concrete sheets are precasted; a foundation is connected with steel columns and the shear walls; the steel columns are connected with steel beams; the steel beams are connected with the composite floor slabs and the shear walls; the shear walls are connected with the composite floor slabs; an upper section of each shear wall is connected with the lower section of each shear wall; the steel columns are connected with the shear walls; the steel beams are combined and connected with the shear walls. According to the invention, the safety, economy and durability of the building can be ensured in virtue of the reliable integrity and seismic resistance of the connection between the structural elements; the steel structural elements and the steel concrete composite members have favorable connection performance, the labor environment for operators is improved, the construction period is shorted and the construction cost is reduced furthest; besides, the large span can be realized as the building structural elements are made of steel materials with higher strength, so that the building is easy to refit and renovate after several years, and the high durability is realized.

The invention discloses a wireless self-networking group detection based mudslide early warning sensing device, system and method. The system comprises an RTU (remote terminal unit) and multiple mudslide monitoring early warning sensing devices, wherein each mudslide monitoring early warning sensing device is taken as a MESH network node, the RTU has a concentrator for data collection integrated therein, and the RTU is in wireless communication connection with all the mudslide monitoring early warning sensing devices through the concentrator. The wireless self-networking group detection based mudslide early warning sensing device, system and method, based on multiple sensors, cooperatively realize mudslide monitoring early warning and have remarkable social benefits.

The invention discloses a method for producing ceramsite from an FCC waste catalyst. The main raw materials used in the method are the FCC waste catalyst, coal ash and petrochemical alkali waste neutralizing liquid. The method comprises the steps of treating the FCC waste catalyst with liquid alkali, uniformly mixing the treated FCC waste catalyst with coal ash, finally adding a proper amount of the petrochemical alkali waste neutralizing liquid in proportion, and carrying out processes of balling, drying and calcination, so as to obtain the ceramsite. The ceramsite is produced from waste of thermal power plants and petrochemical engineering enterprises, so that the waste treatment problem of the relevant enterprises is solved, and meanwhile, the ceramsite with reliable quality and high strength can be obtained.

A connector is mounted on a printed circuit board in an enclosure. A member is interposed between the enclosure and the printed circuit board so as to hold the printed circuit board on the enclosure. The member allows change in the attitude of the printed circuit board relative to the enclosure. When the connector is coupled to the other connector, the connector receives a force from the other connector in the electronic apparatus. The force induces the change in the attitude of the connector and the printed circuit board. The change in the attitude in this manner enables consumption of the energy of the force within the member. Generation of stress can be suppressed in a bonding member such as a solder coupling the connector with the printed circuit board, for example. Generation of cracks can be prevented in the solder. Shockproof is improved for the connector.

The invention provides an EVA (Ethylene vinyl-acetate) film used for laminated glass which is prepared from raw materials in percentage by weight as follows: 69-89.5% of ethylene-vinyl acetate copolymer, 10-30% of polyolefin plastomer, 0.2-0.4% of a silane coupling agent, 0.2-0.5% of an optical stabilizer and 0.1-0.4% of an antioxidant. The content of vinyl acetate in the ethylene-vinyl acetate copolymer is 32-33%. The EVA film consists of an upper layer, a middle layer and a lower layer, wherein the upper and lower layers are prepared from the ethylene-vinyl acetate copolymer, the silane coupling agent, the optical stabilizer and the antioxidant. The middle layer is prepared from the polyolefin plastomer. The EVA film provided by the invention is not only high in strength and transparency, but also good in sound insulating and shockproof performance. The invention further provides a preparation method of the EVA film, and the process is simple and easy to control.

In an engine having a propeller mounted on one end of a crankshaft, the vibrations on an end portion of the crankshaft opposite to the propeller are effectively suppressed with a pair of vibration pendulum type weights arranged outside the crankcase whereby it is possible to easily perform a change of the vibration suppression structure in conformity with the property of the propeller.

This invention relates to a parallel evaporator for vehicle air conditioner. It includes integral type fin flat-tube, fin, multi-holes flat-tube, upper collecting pipe, lower collecting pipe, baffle, inlet pipe and outlet opening. Several parallel and communicated integral type fin flat-tubes are composed of multi-holes flat-tubes and fins. The multi-holes flat-tube and fin are emerged together. The superior end of flat-tube connects to the upper collecting pipe. It inferior end connects to the lower collecting pipe. The upper collecting pipe is divided into fluid inlet-outlet cavity and fluid turning cavity by inner baffle. The fluid inlet-outlet cavity is divided into fluid inlet and outlet cavities by inner baffle. The right side of fluid inlet cavity has inlet pipe. The left side of fluid outlet cavity has outlet pipe. The lower collecting pipe is divided into left and right fluid turning cavities by inner baffle. This invention increases the integral heat transferring efficiency and anti-shock capacity of the parallel fluid evaporator. It also reduces the output air temperature difference of each point at the air output side.

The invention discloses a shockproof suspension shock absorption control method and a device for a museum cultural relic system. Compared with traditional shockproof measures such as improvement of a section of a structural member, improvement of a reinforcement ratio so as to enhance the shockproof ability and additional arrangement of a shock isolation table device, while the shock isolation and shock absorption control cost is not obviously increased and the shockproof ability is effectively improved, time-history analysis and response spectrum analysis calculation are carried out on a museum main body structure-cultural relics integrated system, the earthquake acting force of the museum cultural relic system can be effectively controlled, and huge expenditure is reduced; and as the control method adopted by the system is easy to execute, the cost of the device is comparatively low, large-area promotion and execution of the museum cultural relics are facilitated, damages on the museum cultural relic system by the high-intensity earthquake action can be effectively reduced, and losses are reduced as much as possible.

The invention relates to a high tension transmission line comprehensive tester which is structurally characterized in that a data testing calculation unit is connected with a power supply module, a pulse width modulation (PWM) control unit, a direct current constant voltage constant current source, an impedance matching unit, a standard resistor, a measured line resistor, a relay control unit, a storage and printing unit, a display unit and a keyboard. The PWM control unit, the direct current constant voltage constant current source, a power supply filtering unit, the impedance matching unit, the measured line resistor and a standard resistor are sequentially connected. The relay control unit is connected with an interference voltage detection unit and the impedance matching unit. The resistance-capacitance voltage dividing principle is utilized to measure the static induction voltage under 20kV, a disperse Fourier development technology is adopted to test line loop resistance, digital filtering is utilized to remove alternating current components, only direct current components are measured, and direct current voltage of the line can be still measured accurately after alternating current is overlapped. The tester provides accurate data for fixed value setting of a line automatic device and ensures that a power system runs safely and reliably.

A bank sawing machine comprises a machine body, wherein a saw frame is arranged on the machine body; a workbench is arranged in the saw frame; two vertical columns are arranged in the saw frame; guiding arms are arranged between the two vertical columns; a guiding seat is mounted on each guiding arm; a shockproof seat is mounted on each guiding seat; two swinging shafts are arranged in each shockproof seat; a spring is arranged between the front parts of every two swinging shafts; two rolling wheels are connected onto the rear parts of every two swinging shafts; and a saw belt clearance is left between every two rolling wheels. The bank sawing machine provided by the invention has the beneficial effects that the shock of a saw belt can be reduced and even eliminated when the bank sawing machine is in use; the shockproof effect is obvious; the service life of the saw belt is prolonged; the material section precision is improved; and the saw cutting noise is reduced.

The invention discloses a method for producing foamed glass by melting blast furnace slag. The method comprises the following steps: using the blast furnace slag as a main raw material to produce the foamed glass, wherein the blast furnace slag is metallurgical furnace slag produced online in the ironmaking process of a blast furnace; after acquiring the blast furnace slag from a slag discharge opening of the blast furnace, directly mixing with other raw materials in a high-temperature molten state; finally preparing the foamed glass. The method uses melting blast furnace slag with a high content of glass body as the main raw material, makes full use of residual heat of the melting blast furnace slag and secondary resources, and achieves purposes of energy conservation and environmental friendliness.

The invention relates to an active fault spanning aseismic structure and a construction method thereof. A damping ring is arranged in the surrounding rock of the lining structure at a fault fracture zone, the lining structure is located in the inner round of the damping ring, and a certain spacing distance exists between the lining structure and the damping ring; left, right and upper sides of thetunnel cross section at the fault fracture zone are expanded relative to the tunnel cross section of the stable section; the lining structure penetrating through the fault fracture zone is of a vertical segmental structure, and two adjacent lining segments are connected through a folded flexible joint in the deformation joint. The damping ring is adopted to weaken the earthquake action, and partsof seismic wave energy is absorbed to consume and reduce the earthquake energy; the whole lining structure is converted to the lining segment from, flexible chaining connection capable of bearing large deformability between the two adjacent lining segments is adopted, so that the staggered displacement is mainly absorbed by the flexible chaining connection, and the earthquake resistance and damping performance of the tunnel structure is improved. According to the structure, earthquake resistance and diastrophism resistance are combined, and the whole safety of a tunnel can be greatly improved.

The invention provides quakeproof silencing cotton and a preparation method thereof. The quakeproof silencing cotton comprises an upper non-woven fabric layer, a double-component cotton layer and a lower non-woven fabric layer which are sequentially arranged from top to bottom and are adhered to one another by polyene glue, wherein the double-component cotton layer is prepared from polypropylene fibers and vacuum polyester staple fibers, and the mass ratio of the polypropylene fibers to the vacuum polyester staple fibers is 6 to 4. The produced double-component cotton is thin and has non-toxic and environmental-friendly effects; furthermore, the silencing, heat-insulation and quakeproof effects of the cotton are enhanced; meanwhile, the upper and lower surfaces of the cooled double-component cotton is adhered to the non-woven fabric layers by the polyene glue, and the adhered product is subjected to hot roller pressing molding, so that the silencing cotton is high in rigidity, low in thickness and high in durability.

The invention relates to a flexible direct current transmission suspended type valve tower, an assembly method and a suspension connection structure thereof. According to the invention, a top layer valve group is suspended on a steel beam of a building through the suspension connection structure; the suspension connection structures are connected between the top layer valve group and an adjacent lower valve group and between every two adjacent lower valve groups; the suspension connection structure comprises an insulator, a U-shaped bolt fastened with one end of the insulator, and an 8-shaped ring hinged with the other end of the insulator, so that all the lower layer valve groups can be sequentially suspended below the top layer valve group, the valve tower forms an integral suspended structure, and the overall shock resistance of the valve tower is further improved; and as the valve tower ensures that all layers of the valve groups are suspended below the steel beam of the building through the 8-shaped rings, the external insulators and the U-shaped bolts, the valve tower can be conveniently and rapidly assembled on site, and the work efficiency of valve tower assembly is improved.

The invention discloses a polycrystalline silicon battery pack. The polycrystalline silicon battery pack is formed by sequentially stacking first tempered glass, a first glue film, a polycrystalline silicon battery string, a second glue film, a reflecting plate, a third glue film and second tempered glass from top to bottom through a lamination technology, a nanometer titania film layer is arranged on the upper surface of the first tempered glass in a thermocompression bonding mode, a uvioresistant coating is arranged on the lower surface of the first tempered glass in a thermocompression bonding mode, and an elastic rubber layer is arranged on the upper surface of the second tempered glass in a thermocompression bonding mode. In this way, the polycrystalline silicon battery pack has good strength, ultraviolet light resisting performance and vibration resisting performance, the attenuation phenomenon can be effectively delayed, and the service life is long.