122results about How to "Reduce the modulus of elasticity" patented technology

A thrust measuring system of thrust engine used in small space comprises storage tank of thrust agent, engine, mechanical body, transducer, driving and controlling circuit. It is featured as setting transducer at external side of one end on working beam and balance weight block on another end; placing said driving and controlling circuit in horizontal trench of front and back support beams; arranging engine on connection piece; connecting one end of thrust agent tube to engine and another end to thrust agent storage tank; forming mechanical body by support frame, master shaft, working beam, thrust component and balance weight.

Disclosed is an optical connector apparatus comprising a connector which is connected to an opto-electrical composite cable including an optical fiber strand and a metal conductor, and an object to be connected. The connector is provided with a ferrule which has a conductor portion on at least a part of the surface thereof. The object to be connected is provided with an electrically conductive connector member to be connected to the ferrule. The ferrule and the cable are connected by a caulking structure. When the ferrule is inserted in the connector member, the connector and the object to be connected are electrically and optically connected to each other. Provided is also an optical connector apparatus which comprises a connector having a plurality of ferrules having different distances between the ends of the ferrules and the conductor portion, so that the time at which the connection of the connector to the object to be connected is established differs, and thus the optical connector apparatus is capable of hot swapping. The object to be connected can be a combination of an adapter and a mating connector, or an optical element and an adapter which holds the same, etc.

The invention relates to large-area-friction-induced micron-scale processing equipment in a multipoint contact mode. The large-area-friction-induced micron-scale processing equipment consists of a base, a processing platform drive device, a loading mechanism and a data acquisition and control system, wherein the processing platform drive device consists of a horizontal two-dimensional electronically-controlled translation stage, a manual three-dimensional displacement stage and an L-shaped sample stage; the loading mechanism is formed in a manner that an electric angular displacement stage is arranged on the upper surface of the base, the fixed end of a force-sensitive cantilever beam is fixed on the horizontal working surface of the electric angular displacement stage, and a probe array is fixed on the lower surface of the end part of the free end of the cantilever beam; a laser displacement sensor is located right above the end part of the free end of the cantilever beam; and the horizontal two-dimensional electronically-controlled translation stage, the electric angular displacement stage and the laser displacement sensor are all electrically connected with the data acquisition and control system. The equipment has the advantages of large processing size, high processing efficiency, accuracy in load control, evenness in load distribution and evenness and consistency for processed structures.

The invention discloses an MEMS pressure sensor and a manufacturing method of the MEMS pressure sensor. A sensitive membrane layer which forms a vacuum chamber with a substrate is arranged above the substrate. The sensitive membrane layer comprises a middle sensitive portion and a supporting portion which is arranged at the edge of the sensitive portion and supported on the substrate, wherein the plane where the sensitive portion is located is lower than the supporting portion and is connected with the supporting portion via an inclining portion so that the sensitive portion, the inclining portion and the supporting portion could form a step-shaped structure. According to the MEMS pressure sensor, the sensitive portion, the inclining portion and the supporting portion in the sensitive membrane layer forms a step-shaped sinking structure, so that the internal stress of the sensitive membrane layer could be completely released in the process of depositing the sensitive membrane layer. Because the elastic coefficient of the sensitive membrane layer is low, relative higher sensitivity could be obtained. In addition, the sensitive portion is connected with the supporting portion via the inclining portion, so the sensibility of the sensitive portion to the change of the stress could be greatly reduced so as to improve signal to noise ratio of a chip and improve the performance of the pressure sensor.

The invention discloses a micro-mechanical cantilever beam type pi type continuous reconfigurable microwave band-pass filter. The micro-mechanical cantilever beam type pi type continuous reconfigurable microwave band-pass filter comprises a planar spiral inductor, two identical MEMS variable planar plate capacitors and two identical MIM capacitors are symmetrically arranged at the left and right sides of the planar spiral inductor in sequence, wherein each MEMS variable planar plate capacitor is connected between a CPW signal wire and a ground wire in parallel while each MIM capacitor is connected with the CPW signal wire in series so as to make up a pi type topological structure with band-pass characteristics. The MEMS variable planar plate capacitors achieve different capacitances based on an electrostatic principle; the upper pole plate of each MEMS variable planar plate capacitor is an MEMS cantilever beam while the lower pole plate thereof is the CPW signal wire, wherein the MEMS cantilever beam stretches across the CPW signal wire, and a drive electrode is arranged near the CPW signal wire; an Si3N4 insulating medium layer covers each of the CPW signal wire under the MEMS cantilever beam and the drive electrode. The filter realizes the continuous tuning for the center frequency and the band width and has advantages of low loss, good out-of-band rejection, wide frequency band tuning and small chip area.

The invention relates to a comb-teeth capacitive type two-axis accelerometer based on an SOI technology, comprising an insulating substrate; the insulating substrate is provided with a sensitive mass block; fixed comb teeth which are fixed on the insulating substrate by an oxidation layer in the middle of an SOI silicon wafer are respectively arranged at the periphery of the sensitive mass block; a movable comb tooth is also arranged between each peripheral edge of the sensitive mass block and the corresponding fixed comb tooth; the four corners of the sensitive mass block are also respectively connected with four supporting frames; and the four supporting frames are distributed at the periphery of the sensitive mass block in a central symmetry way, and the other ends of the four supporting fames are connected to an anchorage zone. The comb-teeth capacitive type two-axis accelerometer has small volume and light weight, and can realize two-dimensional accelerate measurement with high sensitivity and high resolution.

The present invention provides a thermosetting resin composition which has smaller solidification shrinking and excellent crack resistance and insulation reliability and the like properties, further the invention provides a thermosetting resin composition which has excellent sealing property between the condensate filled in the hole part and the cover coating layer. The thermosetting resin composition provided by the invention is characterized in that the composition comprises the following components: (A) epoxy resin, (B) polyfunctional phenolic compound, (C) solidifying catalyst, (D) filling agent and (E) the thermosetting resin composition of the oxetane compound; the invention also provides a thermosetting resin composition containing the compound which is showed by the general formula (I) and includes the oxazine ring group.

The invention discloses an earthquake vibration monitoring apparatus comprising a vibration monitor including a base body, an elastic plate, a vibration sensing portion, and an oscillator installed at the elastic plate. The circumferential edge of the elastic plate is supported on the base body. The base body has a hollow structure and provides a motion space for the elastic plate. When being vibrated, the elastic plate moves along the direction perpendicular to the elastic plate and drives the oscillator to move; and the vibration sensing portion senses the movement of the elastic plate to generate a vibration signal. Compared with the prior art, the apparatus has the following beneficial effects: the elastic plate vibrates along the axial direction; the resonant frequency is low; the elastic coefficient is low; the vibration induction sensitivity is high; the detection sensitivity is high; the structure is simple; and the cost is low. Therefore, the vibration monitor can sense the tiniest vibration by the elastic plate, so that the detection precision is high.

The invention discloses a driving electrode plate and capacitor upper electrode plate separating type RF MEMS switch which comprises a substrate, a buffer dielectric layer, a ground wire, a coplanar waveguide transmission line, an anchor point, an insulating dielectric layer, elastic folding beams and an upper electrode. The ground wire, the coplanar waveguide transmission line and the anchor point are arranged on the buffer dielectric layer, the coplanar waveguide transmission line is covered with the insulating dielectric layer, a gap is reserved between the upper electrode and the insulating dielectric layer, the upper electrode is divided into a capacitor upper electrode plate and driving electrode plates located at the two ends of the capacitor upper electrode plate, the driving electrode plates are connected with the capacitor upper electrode plate through two sets of elastic folding beams in the bent shape of n with the bent number being one, and the driving electrode plates are connected with the anchor point through two sets of elastic folding beams in the bent shape of n with the bent number being two. According to the driving electrode plate and capacitor upper electrode plate separating type RF MEMS switch with the structure, the microbridge elastic coefficient is effectively reduced, so that the driving voltage of the capacitor type RF MEMS switch is reduced, and the driving voltage can be lower than 3 V.

The invention provides a water supplement and drainage control method for a hanging board and sunshade board combined support slope greening structure. The water supplement and drainage control methodinvolves a hanging board fixed to a slope, the hanging board is anchored to the slope through a plurality of anchor rods, a sunshade board is anchored to the top of the slope, a plurality of groovesare formed in the hanging board, and water storage tanks are installed at the positions of the grooves. A water supplement and drainage pipe penetrates into the hanging board and is communicated withthe water storage tanks, the sunshade board comprises two metal boards with holes, and the two metal boards are arranged on the top layer and the bottom layer respectively; a pressure plate is fixed to the inner side wall of the metal board on the top layer, springs are fixed to the bottom of the inner wall of the pressure plate, the bottoms of the springs are fixedly provided with an opening-closing plate, and the bottom of the opening-closing plate is provided with the metal plate on the bottom layer; soft water drainage pipes are communicated between the pressure plate and the opening-closing plate. The water supplement and drainage control method has the advantages that construction is convenient, fewer damage factors exist, water drainage and supplement can be facilitated, and later maintenance is facilitated and reduced.

The invention belongs to the technical field of centrifugal speed regulators, and particularly relates to a centrifugal speed regulator device for preventing pulsation. The centrifugal speed regulatordevice for preventing pulsation comprises an input shaft, a disc, fixed blocks, racks, a conical shell and a control rod, wherein the input shaft rotates and drives the disc to rotate; when the rotating speed of the disc is relatively fast, the three fixed blocks move and drive the three corresponding racks to move under the effect of the centrifugal force; the three racks move and drive three corresponding gears to rotate; the three gears rotate and drive an annular gear ring to rotate; three first fixed springs extrude three first hydraulic cylinders; at the moment, the conical shell suffers the acting force of a ball No.1, a ball No.2 and a ball No.3 under the combined action of the first fixed springs and the centrifugal force; and the ball No.1, the ball No.2 and the ball No.3 extrude the conical shell under the action of centrifugal force, and the conical shell moves axially at the moment, so that the conical shell suffers the same pressure force, and further the pulsation phenomenon happening to the centrifugal speed regulator is avoided.

The invention discloses a safety valve. The safety valve comprises a valve body, a valve sleeve, a valve core, a spring seat, a spring, and pressure adjusting screws, wherein the valve body is provided with a valve chamber; the valve sleeve, the valve core, the spring seat, the spring and the pressure adjusting screws are arranged in the valve chamber; the valve body is also provided with a liquid inlet channel, a liquid outlet channel and a valve hole for communicating the liquid inlet channel and the liquid outlet channel; a sliding hole and a pressure chamber positioned at the middle of the sliding hole are arranged at the centre of the valve sleeve; one end of the valve core is provided with a sealing part for blocking the valve hole, and the other end of the valve core is provided with a propping part propped on the spring seat; a sliding part sliding in the sliding hole of the valve sleeve is arranged at the middle end of the valve core; a blind hole and a liquid guide hole are arranged on the valve core, wherein the opening of the valve core is positioned at the centre of the sealing part, and the liquid guide hole is used for communicating the blind hole and a pressure chamber in the valve sleeve; and one end of the spring is propped on the spring seat, and the other end of the spring is propped on the adjusting screw. Compared with the traditional product, the safety valve can effectively reduce the elasticity coefficient of a returning spring on the premise that the same flow is achieved, thus achieving the technical effect under relatively fast dynamic response.

The invention belongs to the technical field of production of autoclaved aerated concrete blocks, and in particular, relates to an autoclaved aerated concrete block blank steam-curing device. The autoclaved aerated concrete block blank steam-curing device comprises a frame and stand columns; the stand columns are fixedly mounted on the frame; a cross beam bracket is fixedly mounted at the upper ends of the stand columns; a pressing plate is arranged under the cross beam bracket; a cylinder is fixedly mounted on the pressing plate, and is movably connected to the cross beam bracket; a cutter is vertically connected between the cross beam bracket and the frame; an autoclaved aerated concrete block blank is placed below the pressing plate; a baffle plate and a spring are arranged on one side, far from the cutter, of the autoclaved aerated concrete block blank; two ends of the spring are fixedly connected with rubber cushion blocks; a rubber band is arranged between the two ends of the spring, and is fixedly connected to the rubber cushion blocks; the rubber band compresses the spring; the spring abuts against one side, near the autoclaved aerated concrete block blank, of the baffle plate; a coil is wound at the upper end of the cutter; and the cutter is connected with a power supply. The autoclaved aerated concrete block blank steam-curing device solves the problem of difficult drying of the interior of the autoclaved aerated concrete block blank due to difficult introduction of steam into a gap of the autoclaved aerated concrete block blank.