87results about How to "The amount of deformation is easy to control" patented technology

The invention relates to a piezoelectric self-powersupply low power consumption remote controller, belonging to the technical field of energy resources and electronics. The metal substrate of a bending piezoelectric vibrator is fixed on a lower shell by a pressing block; the piezoelectric vibrator is connected with a power circuit on a printing circuit board by a lead; the printing circuit board is fixed on an upper shell; the upper shell is provided with an upper locating block; the inside of the lower shell is fixedly connected with a lower locating block; the two shaft ends of a rotary force-applying mechanism are connected with the inclined slideway of a shell in a sliding way; a button is connected with the rotary force-applying mechanism in a pressing way; an offsetting spring is connected with a top block; the top block is contacted and connected with the rotary force-applying mechanism; the shaft of the rotary force-applying mechanism is fixedly connected with two groups of locating gears and a group of tines; the power circuit is connected with the circuit of the remote controller. The piezoelectric self-powersupply low power consumption remote controller has the advantage of utilizing a piezoelectric generating device to supply power for the remote controller, thus being capable of avoiding the problems of inconvenient use brought by replacing batteries and incapable use brought by not replacing the batteries in time when the power is out of use; and being capable of avoiding the secondary cost in use and the environment pollution caused by a plurality of waste batteries.

The invention discloses a manufacturing process of an aluminum alloy wheel, which comprises the following steps: step 1) forming a casting blank in a low-pressure casting mode; step 2) forming a positioning hole on a spoke blank of the casting blank; step 3) preheating the casting blank by a first heating device; step 4) cooling the spoke blank of the casting blank; step 5) mounting the casting blank to a spinning machine; step 6) spinning a wheel rim blank of the casting blank by the spinning machine, heating the wheel rim blank by a second heating device to sufficiently ensure that the spinning temperature is not reduced and simultaneously the wheel rim blank keeps certain plasticity to control the deformation and the deforming speed of the wheel rim blank in the hot spinning process soas to obtain a crude product with good appearance and mechanical properties; and step 7) to step 9) performing heat treatment, mechanical processing and arrangement on the crude product so as to obtain the aluminum alloy wheel with low cost, light weight and good mechanical properties.

The invention discloses a light valve module which is suitable to be assembled on an optical machine base by screws. The light valve module comprises an imaging element, a carrier, a circuit board, a buffer piece and a rigid plate, wherein the whole piece of buffer sheet made of insulating material capable of elastic deformation is overlapped on the rear side of the circuit board; the rigid plate made of rigid material is overlapped on the rear side of the buffer sheet; the circuit board, the buffer sheet and the rigid plate are provided with a plurality of corresponding through holes or through grooves. The screws are orderly arranged through the corresponding through holes and the through grooves of the rigid plate, the buffer sheet and the circuit board to be locked in a fixing part of the optical machine base. With the improved buffer sheet, deflection caused by locking is easy to control and the number of assembly parts and assembly tolerance can be reduced.

The invention relates to a TIP TIG welding method of LNG storage tanks. The welding system comprises control functions of automatic adjustment of arc pressure height, laser automatic tracking of welding seams, the heat input amount of welding wires, the speed adjustment of wire feeding, an oscillator, welding current pulses and the like in cooperation, and the welding method comprises the welding process of a pre-welding preparation stage, invoking welding technology parameters, and automatic system adjustment in the welding construction process, wherein the pre-welding preparation stage comprises the following sub-steps of: according to the welding technology requirement, performing burnishing pretreatment on the plate end bevels of the workpieces to be welded and the shapes of the end parts of tungsten electrodes, and adjusting the angles and the positions of tungsten electrodes and welding wires; realizing centering of the welding steams by laser scanning; and invoking the welding technology parameter group of back welding, stuffing, surface covering and the like to perform welding construction. According to the TIP TIG welding method of LNG storage tanks disclosed by the invention, a favorable welding steam forming effect can be achieved, the welding efficiency is high, and the quality of the welding steams is stable.

An amorphous alloy ribbon stretching device combined with a nanoindenter comprises a base, a high-precision turbo-type coarse and fine tuning differential head, fixed columns, a movable baffle, a fixed baffle, a motor, a motor power supply, a gear, a sample holder, clamps and a remote control, wherein the high-precision turbo-type coarse and fine tuning differential head is located between the fixed columns, one end of the high-precision turbo-type coarse and fine tuning differential head is connected with the movable baffle, the fixed baffle is located at one end of the base and is integrally connected with the base, a spring is sandwiched between the movable baffle and the fixed baffle, the sample holder is arranged on the base and located between the movable baffle and the fixed baffle, the clamps are attached to the sample holder, the motor and the motor power supply are fixed on the base, and a drive shaft of a micro motor is connected with the high-precision turbo-type coarse and fine tuning differential head through the gear. The device is used for testing micro-nano rheological mechanical behaviors, and has controllable deformation and strain and high accuracy. The device is particularly suitable for testing micro-nano mechanical behaviors of a film material in different tensile strain states in a tensile strain process.

The invention relates to a slot turning process for a stator coil and an auxiliary tooling device thereof. The process of the invention comprises the following steps: flatly wrapping a spread coil with a white cloth tape compactly once, wherein the white cloth tape is not allowed to be overlapped at a straight line edge; then preforming in a slot turning mold; compacting a lower layer edge of the coil by a coil rod and a slot wedge in the slot turning mold; then raising a first coil out of an iron core to a certain height, and raising the rest coils sequentially to be higher than the previous coil for a certain distance; in the process of raising at the upper layer edge, applying force vertical to the direction of an iron core surface for providing a guarantee for inserting the next coil smoothly; when each coil is raised, fixing a special iron rod and the upper layer edge firmly with a nylon cable tie; then raising the upper layer edge by a slot turning rod; after slot turning of the coil is finished, withdrawing the slot wedge, and taking out the coil rod and the like; when the lower layer edge of the coil is out of the slot, raising out the lower layer edge integrally by the special iron rod, wherein the straight line edge after the lower layer edge is raised out is straight without deformation; after slot turning is finished, removing the white cloth tape of the coil; wrapping outer insulation according to the insulation wrapping requirement of the coil; and normally inserting the coil as a slot turning position coil after the coil meets the requirement.

The invention relates to an amorphous alloy coating tension device using with a nanoindentor. The amorphous alloy coating tension device comprises a base, a high-precision worm type coarse and fine tuning micrometer head, fixed vertical columns, a movable baffle plate, a fixed baffle plate, an elastic base sheet, a motor, a power source of the motor, and a gear, wherein the high-precision worm type coarse and fine tuning micrometer head is positioned between the fixed vertical columns, and one end of the high-precision worm type coarse and fine tuning micrometer head is connected with the movable baffle plate; the fixed baffle plate is positioned at one end of the base, and is connected with the whole base; the elastic base sheet is clamped between the movable baffle plate and the fixed baffle plate; the motor and the power source of the motor are fixedly arranged on the base; a transmission shaft of the miniature motor is connected with the high-precision worm type coarse and fine tuning micrometer head through a gear. When the amorphous alloy coating tension device is jointly used with the nanoindentor to test the hardness, and the micronanometer rheological mechanics behaviors of viscoelasticity, anelasticity and the like, the continuous tensile deformation of amorphous alloy is realized, the deformation amount and strain are controllable, and the precision is high. The device is especially suitable for testing the micronanometer rheological mechanics behaviors of coating material under different tensile and strain states in the tensile and deformation process.

The invention relates to a magnetic coupling step-by-step excitation type fluid energy harvester and belongs to the field of power generation. The inner side of the cylinder wall of a shell is provided with a reed, and the end portion of the shell is provided with a support. A positioning strip, a boss and a limiting plate are arranged on the left side of the vertical plate of the support. A counter bore is formed in the boss. A pin hole is formed in the limiting plate. An upper lug plate and a lower lug plate are arranged on the right side of the vertical plate. Overflowing holes and guide holes are formed in the upper lug plate and the lower lug plate. The two ends of a pin shaft are fixed in pin holes. A pin hole of a lever is arranged on the pin shaft in the sleeved mode. A suspension magnet is arranged at the end of the left arm of the lever. A magnetic block is arranged at the end of the right arm of the lever. A coil is installed in the counter bore of the boss, and energy transducers are arranged on the upper side and the lower side of the boss. The free ends of the energy transducers are provided with suspended magnets. The homosexual magnetic poles of the suspended magnets and the suspension magnet are oppositely arranged. Guide holes at the two ends of a blunt body are sleeved on to a guide column. The two ends of the guide column are respectively fixed in the guide holes of the upper lug plate and the lower lug plate. Two springs are sleeved onto the guide column. The two ends of the springs are respectively pressed on the blunt body and the upper lug plate or the lower lug plate. Magnetic strips are arranged on the wing plates of the blunt body. The opposite magnetic poles of the magnetic strips and the magnetic block are arranged oppositely.

The invention relates to a prefabricated reinforced concrete culvert T-shape mould, which can solve the problems of hard installment, hard control on the verticality and surface smoothness; loose connection between plates, and concrete leakage, etc. The invention comprises a bottom support, a bottom plate mould, and side plate moulds, while said mould is rectangle whose two sides are mounted with side moulds (2); and two ends are mounted with support side moulds (4); two ends of side mould (2) are mounted with side plate fixed skeletons (5); side moulds () and the support side mould (4) and the side plate fixed skeleton (5) form special-shaped side mould; the baffle mould (6), chair-shaped bottom plate mould (7) and the trapezium bottom mould (8) form the bottom support mould; and the side mould forms the whole mould with bottom support mould. The invention has simple structure and easy installment, which can save cost and labor force, to improve the construction speed and quality.

The invention provides a clamp for vibration testing of a square plate simply supported on four sides. The clamp comprises a base, adjustable locking parts and pressing strips. The base comprises a front support steel channel, a rear support steel channel, a left support steel channel and a right support steel channel which are fixedly connected into a square frame, the front support steel channel and the rear support steel channel are arranged oppositely, and the left support steel channel and the right support steel channel are arranged oppositely. A transverse rib is arranged between the front support steel channel and the rear support steel channel, and the distance between the front support steel channel and the transverse rib is equal to that between the rear support steel channel and the transverse rib. Two longitudinal ribs are arranged on the transverse rib in an equally spaced mode. The two sets of adjustable locking strips with the same length are arranged on the upper surface of the front support steel channel, the upper surface of the rear support steel channel, the upper surface of the left support steel channel and the upper surface of the right support steel channel in parallel respectively. Grooves with the same height are formed in the inner sides of the adjustable locking strips. The pressing strips are arranged in the grooves. The side faces of the steel channels of the base are coated with anticorrosive paint after being subjected to rust removal. Sand blasting is conducted on the surfaces of the adjustable locking strips. The clamp is high in rigidity and clamping force. During vibration testing, the movement of a vibration table top is transferred to the square plate in a distortionless mode.

The invention relates to a self-powered ship-borne positioning and tracking device and belongs to the technical field of ship electronics. An upper cover is arranged on an end part of a cylinder wall of a shell body, the upper cover and a boss of a bottom wall of the shell body are provided with wire coils; two ends of a guide column are fixed on the upper cover and the bottom wall of the shell body; a balance spring, an inertia block and a limiting spring orderly sleeve the guide column; an upper end and a lower end of the inertial block are provided with power generation magnets and sides are provided with suspension magnets; two groups of energy transducers are uniformly arranged on a boss of the cylinder wall through a compression ring and a spacer ring, and spacing discs are uniformly arranged on the spacer ring; the two groups of energy transducers are symmetrically arranged on an upper side and a lower side of the spacer ring, the spacing discs are positioned between two adjacent energy transducers on a circumference, and the width of the spacing disc is greater than distance between the two adjacent energy transducers on the circumference. The transducers are formed by bonding substrates and piezoelectric films, the substrates are installed near the spacer ring, free ends of the energy transducers are provided with suspended magnets, the suspended magnets and the suspension magnets are installed in such a way that same-polarity magnetic poles thereof are opposite to each other, and repulsion between the suspended magnets and the suspension magnets can bend and deform the energy transducers.

The invention provides a welding manufacturing method of a hinge support. The hinge support comprises a base plate, at least one ribbed plate and at least one lug plate, wherein the ribbed plate is connected with the lug plate and the base plate. The welding manufacturing method of the hinge support comprises the following steps that a base material is cut and then is blanked, so that a rough blank of the lug plate, the ribbed plate and the base plate are obtained; the rough blank of the lug plate is chamfered, so that the lug plate is obtained; and the base plate, the ribbed plate and the lugplate are fixed and welded, so that the hinge support is obtained. The welding manufacturing method of the hinge support has the beneficial effects that the method is easy and convenient to implement, the cost is low, deformation of the obtained hinge support can be controlled, the size is accurate, and the mechanical property is better; and the quality is greatly improved, and thus, the requirements of higher-quality projects can be met.

The invention discloses a linkage type robot clamping device. The linkage type robot clamping device is characterized by comprising a pedestal, a cylinder, a plurality of sliders and a rotary disc, wherein the sliders are arranged on the pedestal in a sliding manner; the rot rotary disc is rotationally connected to the pedestal; the pedestal is provided with horizontal grooves and longitudinal grooves, and the horizontal grooves are vertical to the longitudinal grooves; the horizontal grooves are formed in the two sides of the rotary disc; the longitudinal grooves are formed in the two sides of the rotary disc; the sliders are respectively mounted inside the horizontal grooves and the longitudinal grooves in a sliding manner; connecting rods are mounted at the sliders and the rotary disc in an articulation manner; the end part of the cylinder and the end part of the output shaft of the cylinder are respectively connected to two sliders which are arranged oppositely; a sucking disc is mounted on each slider; the cylinder stretches out or retracts back to drive the sliders at one side to move along the horizontal grooves or the longitudinal grooves; the rotary disc rotates to drive the sliders at the other side to move; each sucking disc is capable of clamping or releasing a work piece. The linkage type robot clamping device has the characteristics of being quick in positioning and high in production efficiency.

The invention relates to a self-powered device for a shipborne positioning and tracking system, and belongs to the technical field of ship electronics. An upper cover is arranged at the end portion of the wall of a shell. Bosses on the upper cover and on the bottom wall of the shell are respectively provided with a coil. The two ends of a guide column are fixed on the upper cover and the bottom wall of the shell. The guide column is sequentially sleeved with a balance spring, an inertia block and a limiting spring from bottom to top. The side edge of the inertia block is provided with a wing plate. The upper end and the lower end of the inertia block are provided with power generation magnets. The thickness of the power generation magnets is the same as the thickness of the coils. Two sets of energy transducers are evenly distributed on the boss on the wall of the shell through a pressing ring and a spacer ring. Limiting radial plates are uniformly distributed on the spacer ring. The two sets of energy transducers are symmetrically arranged on the upper side and the lower side of the spacer ring. The limiting radial plates are located between two adjacent energy transducers on the circumference, and the width of the limiting radial plates is larger than the distance between every two adjacent energy transducers. Each energy transducer is formed by bonding a substrate and a piezoelectric film, and the substrate is arranged close to the spacer ring. The substrate and the limiting radial plates are in contact with the wing plate of the inertia block, while no interaction force exists. The energy transducers are in the natural vertical state.

The invention discloses a liquid-gas dual-state Mini / Micro LED chip mass transfer crystal film and a manufacturing method thereof. The liquid-gas dual-state Mini / Micro LED chip mass transfer crystal film comprises a substrate, a medium storage grid, a liquid-gas dual-state medium, a sealant, an elastic layer and a bonding layer, by means of the characteristics that a liquid-gas dual-state medium is easy to heat and low in boiling point and the viscosity of a bonding layer is obviously reduced after being heated, laser matched with an absorption pattern of the liquid-gas dual-state medium penetrates through a substrate to irradiate the liquid-gas dual-state medium so that the liquid-gas dual-state medium can be gasified to generate bubbles, a chip is pushed to be transferred to a target substrate, and mass transfer of the chip is achieved. Compared with the existing heat release and ablation release, the method has the advantages that the repeated utilization of the crystal film and the high-precision mass transfer of the chip can be realized under the conditions of environment-friendly temperature and no pollutant generation.

The invention relates to a self-powered vehicle-mounted positioning tracking and alarming device, and belongs to the automobile electronic technical field. An ear plate is arranged on each of the left side wall and the right side wall of each of an upper shell and a lower shell, limiting surfaces are arranged on each of the front side wall end and the rear side wall end of each of the upper shell and the lower shell, and a guide groove is arranged on each of the middle parts of the front side wall and the rear side wall of each of the upper shell and the lower shell; the lower shell is provided with an acceleration sensor and a circuit board provided with a transmitting unit; metal substrates are connected between the upper ear plates and the lower ear plates at the left side and the right side in a pressing manner, the middle part and the end part of each metal substrate are respectively provided with a first electromagnetic unit and a second electromagnetic unit, and piezoelectric wafers are pasted at two sides of each metal substrate; third electromagnetic units are arranged above the first electromagnetic unit and the second electromagnetic unit of the upper shell and below the first electromagnetic unit and the second electromagnetic unit of the lower shell; each electromagnetic unit is composed of a magnet and a coil; the upper end and the lower end of a floating plate inlaid with a fourth coil are respectively placed in the upper guide groove and the lower guide groove, and springs are connected between the floating plate and the upper shell and between the floating plate and the lower shell in a pressing manner. The self-powered vehicle-mounted positioning tracking and alarming device has the advantages and characteristics: the device is self-supported with energy, can be used as an independent component to be buried in a body hidden part, and is safe and reliable; the environmental adaptation and power generation capacities of power generation components are strong, the effective frequency band is wide, and the reliability is high.

The invention relates to a piezoelectric energy harvester used for a pipeline airflow detection system, and belongs to the technical fields of new energy and pipeline monitoring. A housing body is mounted on an inner wall of a pipeline through a web plate. A seat plate of a bracket is mounted at an end part of a side wall of the housing body. Inclined mounting surfaces are arranged on ear plates of an upper end and a lower end of the same side of the seat plate. A bottom plate of a half shaft is mounted at end parts of the ear plates of the bracket. A left end and a right end of a cam body ofan exciter are respectively provided with a guide pin and a guide hole, and an upper side and a lower side are provided with multiple cams. Cam surfaces are composed of bottom surfaces, inclined surfaces and top surfaces which are sequentially connected. The guide hole of the exciter is arranged on the half shaft in a sleeving manner, and the guide pin extends out of the seat plate of the bracket.An end part of the guide pin is equipped with a blunt body. A shaft sleeve is arranged at an extending end of the guide pin in a sleeving manner. A support spring and a buffer spring are respectivelyconnected between the seat plate of the bracket and the shaft sleeve and the cam body in a pressing manner. One end of each piezoelectric vibrator is mounted on a mounting surface of the bracket. Jacking blocks mounted at the free ends of the piezoelectric vibrators abut against the cam surfaces. When the exciter is located at a vibration center point, the jacking blocks are in contact with midpoints of the inclined surfaces of the cams.

The invention relates to a wind speed wind direction monitoring device and belongs to the wind monitoring technology field. A bottom wall of an upper casing is provided with a through hole, a side wall of the upper casing is provided with an upper ring stand, an end portion of the side wall of the upper casing is equipped with an upper cover, a top wall of a lower casing is provided with an axialstand with a through hole, a side wall of the lower casing is provided with a lower ring stand, an end portion of the side wall of the lower casing is mounted on a cross board of a support, the crossboard is equipped with a circuit board, the axis stand is equipped with an axial sleeve embedded with a magnetic column, an end portion of the axial stand is connected with the bottom wall of the upper casing through a screw, the bottom wall of the upper casing or the top wall of the lower casing is embedded with sensors, the sensors are uniformly distributed on circumference taking a center of the axial stand as the circle center, the upper and lower ring stands are equipped with arc-shaped piezoelectric oscillators of which free ends are equipped with magnetic sheets, substrates of the piezoelectric oscillator are mounted close to the upper ring stand or the lower ring stand, acting force between the magnetic sheets and the magnetic columns is repulsion force, one end of a swing arm of an exciter is provided with an arc-shaped connection board, the other end is provided with a hollow cylinder, the connection board is mounted on the axial sleeve, a plane of the swing arm is embedded with circular magnets, and the circular magnets are arranged on the circumference of the sensors.

The invention relates to a flag-swinging excitation wind energy gatherer, and belongs to the new energy field. The flag-swinging excitation wind energy gatherer is characterized in that a semiaxis and a sensor are arranged over the disk body of a swing disk; a boss is arranged at the center below the disk body, and a ring table is arranged at the outer rim of the disk body, and a circuit board is arranged below the disk body; a canvas frame sleeve sleeves the semiaxis, and can rotate around the semiaxis, and canvas is arranged on the sleeve; the center of two magnets which are symmetrically arranged below the base plate and the center of the sensor are arranged at the same circumference; a housing is arranged on a pedestal; a connection board of an exciter is arranged on the boss of the pedestal; a swing rod is arranged on the connection board; an excitation disk is arranged on the swing rod; a stud is arranged on the excitation disk; and the stud is in threaded connection with the boss of the swing disk; generation units are uniformly arranged on the side wall of the boss of the pedestal, wherein the free end of each bearing spring contacts the outer edge of the excitation disk, but has no interaction force; each piezoelectric vibrator is an arc structure which is formed through bonding of a substrate and a piezoelectric patch; the bending radius of the substrate is less than the bending radius of each piezoelectric patch; the substrate is arranged in a manner of approaching to the bearing spring; and the free end of the substrate presses against the bearing spring.

The invention relates to a telescopic pipeline flow energy capture device, and belongs to the technical field of new energy and pipeline monitoring. A shell is installed in a pipeline, and an end cover is installed at the end part of a side wall of the shell; an inner pin hole is formed in the center of a vertical plate of a bracket, and horizontal plates with inclined mounting surfaces are arranged at the upper and lower ends on the same side of the vertical plate; left and right pins are respectively arranged on the left and right sides of an exciter, a plurality of cams are arranged on theupper and lower side along the axial direction of the left and right pins, and a cam surface is composed of a bottom surface, an inclined surface and a top surface, which are connected in sequence; the exciter is placed in the shell, the left pin extends out from the bottom wall of the shell, and a blunt body is installed on the end part of the left pin; a supporting spring and a buffer spring arerespectively arranged on the left pins on the left and right sides of the bottom wall of the shell in a sleeving manner; the vertical plate of the bracket is installed on the right pin through the inner pin hole, and a left spring and a right spring are respectively arranged on the right pins on the left and right sides of the vertical plate; and one end of a piezoelectric vibrator is installed on the mounting surface of the bracket, the piezoelectric vibrator is a cantilever beam structure formed by bonding a substrate with a piezoelectric sheet, a top block at a free end of the piezoelectric vibrator abuts against the cam surface, the top block is in contact with the midpoint of the inclined surface of the cam when it is not working.

The invention provides a machining method of a journal type compressor blade. The machining method comprises the following specific steps of S1, positioning and mounting a blank on a five-axis machining center by taking six positioning points on the blank as a positioning reference; S2, milling all shape elements of the large end to the size of a finished product, and obtaining an annular mounting groove and an angular mounting face; S3, milling all shape elements of the small end to the size of a finished product to obtain small end journal, and at the moment, converting the blank into an intermediate a; S4, positioning and mounting the intermediate a on the five-axis machining center with the outer circle of the annular mounting groove, the outer circle of the small-end journal and the angular mounting face as positioning references, and applying pretension force to the two ends of the intermediate a; and S5, milling the blade basin side and the blade back side of the blade body and other shape elements at the two ends of the blade body to the finished product size. According to the machining method, error accumulation caused by multiple times of reference conversion can be avoided, so that the deformation of the blades is concentrated, and the deformation of the blade in the machining process is controllable.

The invention relates to a dual-purpose piezoelectric generator, and belongs to the technical field of new energy. Two cross beams are arranged on the outer side of the right wall of a body cavity ofa main body, wherein lug plates at the two ends of an inertia body are connected with the cross beams of the main body through reeds, and a main magnet is mounted on the inertia body through an adjusting block; an end cover is mounted at the upper end of the body cavity, the two ends of a guide pin are arranged in a counter bore of the end cover and a counter bore of the bottom wall of the body cavity respectively, and the guide pin is sequentially sleeved with a balance spring, an exciter and a buffer spring from bottom to top; two or two sets of cams are symmetrically arranged on the left side face and the right side face of the exciter, and an auxiliary magnet is mounted on a protruding block in the center of the right side face of the exciter; the cam surface is composed of a bottom face, an inclined face and a top face which are sequentially connected; seat plates with inclined mounting faces are mounted on the left wall and the right wall of the body cavity, piezoelectric vibrators are mounted on the mounting faces and are of cantilever beam structures formed by bonding base plates and piezoelectric pieces, ejection blocks are mounted at the free ends of the piezoelectric vibrators and abut against the cam surface, and when no interaction force exists between the main magnet and the auxiliary magnet, the ejection blocks make contact with the middle points of the inclinedfaces of the cams.

The invention relates to a multipurpose piezoelectric vibration generator, and belongs to the technical field of new energy. The bottom wall of a shell is provided with a guide pin, the end part of the side wall is provided with an end cover, and an airbag is tied to the end cover through a rope; two ends of a cross beam of a bracket are provided with longitudinal beams with inclined mounting surfaces; the upper and lower ends of an exciter are provided with communicated upper and lower guide holes, and the left and right sides are provided with cams; a stepped shaft is sequentially provided with a thin shaft, a middle shaft and a thick shaft from top to bottom, the end part of the thick shaft is provided with a guide hole, and the guide hole sleeves the guide pin and crimps a support spring on the guide pin; the upper guide hole and the lower guide hole of the exciter respectively sleeve the middle shaft and the thick shaft of the stepped shaft, and the thick shaft crimps a lower spring on the top wall of the lower guide hole; the cross beam of the bracket and an upper frequency modulation block are installed on the thin shaft of the stepped shaft, the upper frequency modulation block crimps a buffer spring on the end cover, and the exciter crimps the upper spring sleeving the middle shaft on the cross beam; and a cantilever beam type piezoelectric vibrator formed by bonding asubstrate and a piezoelectric patch which are equal in thickness is mounted on the mounting surface of the bracket, and the flanging of the substrate is crimped to the midpoint of the inclined surface of the cam when the piezoelectric vibrator does not work.

The invention discloses a bending method of a stainless steel band pore plate. The bending method is applied to the field of stainless steel part discharging and pressing. The bending method comprisesthe steps that pores are punched or drilled in the stainless steel plate in a flat plate state; a pressing line, needing to be bent, of the stainless steel plate is marked; on the premise of guaranteeing that the stainless steel plate is not cut off, a straight line gap is cut under each pore along the pressing line; the stainless steel plate is put in pressing equipment to be subjected to bending treatment along the pressing line; and the gaps of the formed stainless steel plate are subjected to single-face welding and double-face forming. The problems that in an existing production method,the welding quantity and the deformation quantity are increased, the manufacturing cost is increased, or the pore locating difficulty is increased, the pore precision is not high, and meanwhile the production efficiency is low are mainly solved. By means of the method, under the conditions that material deformation is reduced and the production efficiency is improved, the bending and forming precision of the pores can be guaranteed.

The invention discloses a precise inner hexagon machining lathe for a valve element of a pressure valve and a machining process of the precise inner hexagon machining lathe. The precise inner hexagon machining lathe comprises an equipment base, a moving device is arranged on the left side of the top of the equipment base, a height adjusting mechanism is arranged on the right side of the top of the equipment base, a transverse moving mechanism is arranged on the top of the left side of the height adjusting mechanism, and a broaching tool adjusting mechanism is arranged at the bottom of the transverse moving mechanism. In actual use, lathe machining is adopted, a 120-degree-angle tool is customized, a main shaft is locked, and movement of a tool turret in the Z direction is utilized, so that one angle in a hexagon can be broached, the rest five angles are machined in sequence after the main shaft uniformly rotates by 60 degrees, and therefore, by means of the machining mode, the broaching amount each time is about 0.05 mm, the machining precision of the hexagon can be met, the machined surface is flat and smooth, no stamping stress is generated, the deformation of the size of the inner hexagon after heat treatment can be controlled more easily, circulation of parts is reduced, and the machining efficiency is improved.

The invention relates to a piezoelectric tunnel airflow generator, and belongs to the technical field of new energy. A support is composed of an upper beam, a lower beam, and a baffle connecting the upper beam and the lower beam. The upper beam and the lower beam are located on the same side of the baffle and are symmetrically arranged. Each shape limiting frame is composed of a beam and shape limiting blocks at the two ends of the beam, and arc shape limiting faces are arranged on the shape limiting blocks. The cross beams of the two shape limiting frames are connected through screws, the shape limiting surfaces are oppositely installed, two piezoelectric vibrators and an elastic sheet are connected between the two cross beams in a pressing mode, and the piezoelectric vibrators are located on the two sides of the elastic sheet; each piezoelectric vibrator is composed of a substrate and a piezoelectric plate bonded to one side of the substrate. One side of the substrate is in contact with the elastic sheet, the root of the other side of the substrate is in contact with the shape-limiting surface, and the piezoelectric sheet is not in contact with the shape-limiting surface; the shape limiting blocks at the two ends of the shape limiting frames are connected with the upper beam and the lower beam respectively, and the lug plate of bluff body is installed at the free end of the elastic piece and close to the baffle; and the symmetric center layer in the thickness direction of the elastic sheet, the center line of the bluff body and the symmetric center layer in the width direction of the baffle are positioned in the same vertical plane when not in work.

The invention relates to a flowmeter, and belongs to the technical field of new energy and flow instruments. A shell comprises a fluid cavity and an electric control cavity, a shaft hole is formed in the bottom wall of the fluid cavity, an inlet-outlet is formed in the side wall, and an annular groove and a sinking cavity are formed in the bottom wall of the electric control cavity. A sealing cover is arranged at the end part of the fluid cavity; the circuit board is pressed in the electric control cavity by a cover plate; a magnet is arranged on the wheel disc with the half shaft and the blades, and the half shaft is arranged in the shaft hole; the elastic film is pressed on the bottom wall of the annular groove through the annular plate provided with the sinking groove; a limiting pad or a fixed composite film consisting of a fixed electrode and a fixed friction layer is arranged on the bottom walls of the sinking groove and the sinking cavity; the elastic film is an independent metal layer or a composite film formed by the metal layer, a piezoelectric layer and a dynamic friction layer; the metal layer and the dynamic friction layer form a dynamic composite film; the metal layer and the piezoelectric layer form a piezoelectric energy harvesting unit, the movable and fixed composite films form a friction energy harvesting unit, and mechanical energy is converted into electric energy through bending deformation of the composite films and contact and separation between the composite films and the fixed composite films; and the number of the pulse voltage signals in unit time is used for representing the fluid flow.

The invention relates to a telescopic pipeline flow generator, and belongs to the technical field of new energy and pipeline monitoring. A shell is installed on the inner wall of a pipeline through aspoke plate; an end cover is installed on the end part of the side wall of the shell; a left pin and a right pin are arranged at the left and right sides of the vertical plate of a bracket; transverseplates with inclined installation surfaces are arranged at the right sides of the upper and lower ends of the vertical plate; the bracket is arranged in the shell; therefore, the left pin extends outthrough the bottom wall of the shell; a bluff body is arranged on the end part of the left pin; a support spring and a buffer spring respectively sleeve the left pin among the bottom wall of the shell, the bluff body and the vertical plate of the bracket; a left spring, an exciter, a frequency modulation block and a right spring sequentially sleeve the right pin from left to right; the exciter isconnected with the frequency modulation block; the right end of the right spring abuts on a stop block on the end part of the right pin; both the upper and lower sides of the exciter are each provided with a movable cam composed of a bottom surface, an inclined surface and a top surface along the axial direction of the pin hole; one end of a piezoelectric vibrator is installed on the installationsurface of the bracket; when non-working, the flange of the substrate of the piezoelectric vibrator is contacted with the midpoint of the inclined surface of the cam; furthermore, the assembly pre-bending deflection is one half of the allowable value thereof; and the allowable deflection of the piezoelectric vibrator is greater than the lifting stroke of the cam.

The invention belongs to the technical field of aero-engine assembly, particularly relates to an installation device for a clamping ring type connecting baffle. The installation device comprises a base, a positioning ring, supports, pressing plates and dial gauge stands; the base is disc-shaped, and the positioning ring is fixedly arranged on the base; the dial gauge stands each comprise a dial gauge head joint, a dial gauge rod and a supporting column, wherein the supporting columns are fixed on the base, the dial gauge head joints are fixed on the supporting columns, the dial gauge rods areconnected with the dial gauge head joints, and dial gauges are installed on the dial gauge head joints; the supports are fixed on the base; the pressing plates are arranged on the supports, wherein adjusting supports are arranged at one ends of the pressing plates and are parallel with bolts, the adjusting supports are fixed to the pressing plates through nuts, and the pressing plates are evenly distributed on the base; and the pressing plates and the dial gauge stands are arranged on the outer side of the positioning ring at intervals, and between every two pressing plates is provide with a dial gauge stand. According to the installation device, the clamping ring type bolt-free connecting baffle can be assembled and disassembled.

The invention discloses an aluminum-based composite material multi-direction double-level deformation restraining device and an application method thereof, particularly relates to an aluminum-based composite material multi-direction double-level deformation restraining device and an application method thereof, and aims at solving the problem that according to a traditional aluminum-based compositematerial extrusion forming method, material diameter-direction size increasing is hard to achieve. The aluminum-based composite material multi-direction double-level deformation restraining device iscomposed of a lower pressing head, an upper pressing head and an annular restraint die. The method comprises the steps that firstly, a cylindrical blank and a cylinder annular wrapping sleeve material which are the same in height are prepared and are in interference fit, and blank preparing is finished; secondly, preheating is conducted, the blank, the upper pressing head, the lower pressing head, a heat preservation bottom plate and the annular restraint die are preheated to the assigned temperature; thirdly, the heat preservation bottom plate, the lower pressing head, the blank and the upper pressing head are placed on a press machine platform; fourthly, the press machine is controlled, and the blank is compressed and deformed; and fifthly, heat treatment is conducted. According to thealuminum-based composite material multi-direction double-level deformation restraining device and the application method thereof, after multi-direction double-level deformation restraining, the comprehensive performance of a composite material can be effectively improved, and the composite material radial size is increased by 15%-25%. The aluminum-based composite material multi-direction double-level deformation restraining device and the application method thereof are used in the aerospace industry.