354results about How to "Easy to Modular Design" patented technology

The invention provides a frame panel type satellite configuration and a modular satellite adopting the same. The frame panel type satellite configuration comprises a four-edge-column frame and honeycomb structure plates; the four-edge-column frame is used for bearing axial load when being connected with four connecting interfaces for carrying, wherein the four-edge-column frame comprises rod pieces and rod-piece joints; each rod piece is provided with a plurality of bosses; the bosses are provided with installing holes for connection with the honeycomb structure plates by first fasteners; a plurality of through holes are arranged in the extending surfaces of the end parts of the rod pieces and are used for connection with the rod-piece joints by second fasteners; the honeycomb structure plates provide installing surfaces for single satellite equipment and simultaneously provide in-plane shearing rigidity for the four-edge-column frame.

The invention discloses a multi-parallel inverter motor speed regulating system and a control method of the multi-parallel inverter motor speed regulating system. The system is formed by connecting multiple inverter modules in parallel. The direct current sides of multiple inverter sub modules are directly connected with a direct current power supply with a direct current bus capacitor in parallel. The alternating current sides of the multiple inverter sub modules are connected with multiple sets of smoothing reactors respectively in series and then directly connected in parallel to drive an alternating current motor. By the adoption of the structure, modularization expansion of the motor speed regulating system is easily conducted, and the fault-tolerance performance of the motor speed regulating system is enhanced. By means of a random SVPWM method based on carrier phase shifting, switching frequency of parallel inverters is equivalently improved, switching subharmonic energy within narrow frequency bands is equalized, the harmonic performance of output currents of the parallel inverters is improved, and electromagnetic interference resistance of the motor speed regulating system is enhanced. By the adoption of a space vector synthetic technology for dynamically allocating SVPWM zero vectors, zero-sequence circulating currents between the parallel inverter modules are effectively eliminated, and normal operation of the system is guaranteed.

The invention provides a processing method of dynamic data of an embedded browser. A JavaScript engine of the browser is used in a web page for expanding a non-standard JavaScript method for calling back a dynamic data acquisition module; acquisition of dynamic data is specifically realized in the dynamic data acquisition module in an application procedure; layout is carried out on the dynamic data in the web page for realizing the combination of the dynamic data with the web page, and the browser analyzes the layout of the web page for completing the layout and display of the dynamic data. The method carries out the interaction by the related method of calling the JavaScript engine for expansion in the web page, the callback way and the dynamic data acquisition module of the application procedure which is independent out of the browser, realizes the acquisition of the dynamic data and determines the display form; and the layout of the dynamic data is completed by the independent layout in the web page, and the management of the browser is carried out by the browser without the need of external application procedure for intervention, thereby being capable of separating the data acquisition of the browser, the layout and the display, reducing the coupling degree of the browser with the external application procedure and simplifying the complexity.

The invention provides a coaxial coupling driving system of double planetary gear systems and double motors. The coaxial coupling driving system comprises the double motors, the double planetary gear systems and the like. Each planetary gear system comprises a gear ring, a planetary carrier and a sun wheel. A rotor of the first motor is connected with the gear ring of the first planetary gear system. A rotor of the second motor is connected with the sun wheel of the first planetary gear system and the sun wheel of the second planetary gear system through synchronizers correspondingly. The planetary carriers of the two planetary gear systems are connected with an output shaft. The gear ring of the second planetary gear system is connected with a shell. The output shaft is connected with the input end of a deceleration differential. The output end of the deceleration differential is connected with two wheels through two half shafts. A motor control device is connected with an energy storage device and conducts electric power transmission. The motor control device is further connected with the first motor and the second motor and outputs a control command. The coaxial coupling driving system has the characteristic that the vehicle dynamic property, the energy consumption economical efficiency, the geographical adaptability and the application adaptability are better.

The invention relates to an active power quality adjuster, consisting of a fundamental wave compensation part and a harmonic wave compensation part, and the two parts compensate fundamental current and harmonic current respectively. An H-bridge cascade multilevel inverter and a fundamental wave connection inductance are connected in series at the fundamental wave compensation part, so that reactive compensation and unbalanced load compensation can be dynamically carried out; the H-bridge cascade multilevel inverter and a unituning passive filter are connected in series to form the harmonic wave compensation part which is connected across the two ends of the fundamental wave connection inductance. Therefore, the power quality adjuster can lower switching frequency and loss of the H-bridge cascade multilevel inverter at the fundamental wave compensation part greatly on one hand, and only a fraction of fundamental current passes the harmonic wave compensation part and the whole part only undertakes fundamental voltage of the fundamental wave connection inductance without undertaking fundamental voltage on the other hand, thereby effectively reducing the capacity of the H-bridge inverter and the withstand voltage at the harmonic wave compensation part.

The invention discloses a novel cascaded three-phase bridge converter and belongs to alternating current (AC) / direct current (DC) converters. The converter comprises three-phase AC power supplies, three input inductors and three cascaded three-phase voltage type bridge converters, wherein the three-phase AC power supplies are in star connection and do not have a neutral line. A voltage stress of a switching tube is reduced by using a connection mode of cascaded superposition of three-phase input line voltages, so the converter is applicable to high-voltage and high-power level occasions; and when three-phase input power supplies are unbalanced, inter-phase energy can be compensated for each other, so DC output voltages of each three-phase bridge are automatically equalized. By using cascade connection between bridge arms of the three-phase bridges, compared with a three-phase cascaded converter which is cascaded in same level (m level) and consists of single-phase H-bridge cascaded converters, the novel cascaded three-phase bridge converter has the advantage that: six active switching tubes and m+1 output capacitors are eliminated, so the cost and volume of the converter are reduced.

The invention discloses a self-excitation mixed-excitation brushless direct current (DC) power-generating system and a control method thereof, belonging to the category of brushless DC power-generating systems. The power-generating system comprises a mixed-excitation brushless DC generator, a filtering capacitor, two current transformers, an excitation current detecting and regulating circuit, an output current detecting and regulating circuit, an output voltage detecting and regulating circuit and a digital voltage-regulating controller. The control method comprises three steps of control, i.e., voltage feedback control, load current feedback control and excitation current feedback control. The DC power-generating system does not need an external auxiliary power supply and can realize constant-voltage output within a wide rotating speed and large load range. The digital control leads to easy realization of parameter adjustment and modularization design. The DC power-generating system has an important application value in an independent-power-supply DC power-generating system of an airplane, a ship, an automobile, and the like.

The invention relates to a large-power multilevel converter based on a high-frequency isolation transformer, and the large-power multilevel converter comprises a main circuit and a phase-shift control circuit of the main circuit, wherein an input stage of the main circuit is a cascade-type H-bridge rectifier, an intermediate stage of the main circuit is a high frequency direct current-direct current (DC-DC) isolation converter, and an output stage of the main circuit is a diode embedded multilevel inverter. Each H bridge rectification circuit of the cascade-type H-bridge rectifier outputs identical direct-current voltage, and the phase-shift control circuit controls the capacitance voltage at the DC side by controlling a phase shifting angle of each H-bridge rectification circuit. The large-power multilevel converter has advantages that since the cascade-type H-bridge rectifier is adopted, each H-bridge rectification circuit outputs identical DC voltage, and the phase-shift control circuit controls the capacitance voltage at the DC side by controlling the phase-shifting angle of each H-bridge rectification circuit, the unbalance problem of the capacitance voltage at the DC side in a topological structure can be flexibly solved, the independent control for the DC-side capacitance voltage is realized, the voltage stress on each switch device is reduced, and the modularization design is favored.

The invention provides a novel modular multi-level solid-state transformer and an internal model control method thereof. The solid-state transformer comprises a modular multi-level converter, a DC-DC isolator and a DC-AC inverter, wherein the alternating current side of the modular multi-level converter is connected to a high-voltage AC network and the direct current side of the modular multi-level converter is connected to the input end of the DC-DC isolator; the direct current side of the DC-AC inverter is connected to the output end of the DC-DC isolator and the alternating current side of the DC-AC inverter is connected to a low-voltage AC network or load; through changing the number of power sub-modules connected to each bridge arm of the modular multi-level solid-state transformer in series, the voltage application range of the solid-state transformer is flexibly adjusted, and a problem of application of the solid-state transformer in middle-high voltage occasions is effectively solved. According to the characteristics of internal model control, an internal model current inner loop is combined with a PI voltage outer loop, and a new double closed loop control structure is constructed, so that the modular multi-level converter and the DC-AC inverter are controlled; and through the control method, the current has a quicker response speed and stronger anti-disturbance capability.

The invention discloses an electromagnetic transient mathematical model of a distributed power-flow controller based on an MMC, control system and a modeling method. The distributed power-flow controller comprises a parallel connection side converter composed of a three-phase converter based on the MMC at the parallel connection side and a parallel connection side single-phase converter and a series connection side converter composed of multiple sets of series connection side single-phase converter; the electromagnetic transient mathematical model mainly comprises a parallel connection side converter model and a series connection side converter model; the control system comprises a parallel connection side control model and a series connection side control model, the parallel connection side control model comprises a three-phase converter control module based on the MMC at the parallel connection side and a parallel connection side single-phase converter module, and the series connection side control model comprises a series connection side third harmonic control module and a series connection converter active power reactive power control module. The electromagnetic transient mathematical model is designed by adopting modularization, the sub module switch-on and switch-off frequency is lowered, and the loss is lowered; the control system adapts to different voltage grades, and is applicable to flexible alternating current transmission occasions.

The invention discloses an expansion driving type hoisting and lifting mechanism, which comprises an expansion device, a driving device, a guide wheel, a rope unreeling reel, a lifting hook group and a fixed pulley group. The expansion device is provided with a wheel shaft, a plurality of expansion wheels, a bracket and a displacement device laterally moving back to a driving end, wherein the driving device comprises a gear motor, a driving wheel, a driving shaft, a bearing and a bearing support; a steel wire rope is crosswise wound between the driving device and the expansion device; one end of the steel wire rope, coming out from the driving device, is wound through the lifting hook group and the fixed pulley group and then fixed on a steel structure having a supporting effect; the other end of the steel wire rope, coming out from the expansion device, is fixedly wound on a rope containing reel through the guide wheel; and the driving wheel of the driving device and the rope containing reel simultaneously rotate anticlockwise or clockwise, so as to drive the lifting hook group to be lifted or descended. The mechanism is particularly suitable for occasions with large lifting heights and narrow installation spaces, has a simple structure, and is low in cost and beneficial to modular designs.

The invention discloses a self-excitation mixed-excitation synchronous motor alternating current (AC) power-generating system and a control method thereof, belonging to a synchronous motor AC power-generating system. The power-generating system comprises a mixed-excitation synchronous motor, two current transformers, an excitation current detecting and regulating circuit, an output current detecting and regulating circuit, an output voltage detecting and regulating circuit, a rectifier bridge, a filtering capacitor and a digital voltage-regulating controller. The control method comprises three steps of control, i.e., voltage feedback control, load current feedback control and excitation current feedback control. The AC power-generating system does not need an external auxiliary power supply and can realize constant-voltage output within a wide rotating speed and large load range. The digital control leads to easy realization of parameter adjustment and modularization design. The AC power-generating system has an important application value in a constant-frequency or variable-frequency AC power-generating system of an airplane, a ship, an automobile, a wind power generation system and the like.

The invention discloses a modularized six-freedom-degree driving vibration isolation platform which comprises four two-freedom-degree driving vibration isolation modules, an object stage and a base, wherein lower connecting plates of the four two-freedom-degree driving vibration isolation modules are respectively arranged on the four corners of the base, L-shaped connecting plates of the four two-freedom-degree driving vibration isolation modules are connected with the object stage, and output shafts of horizontal actuators of the adjacent two two-freedom-degree driving vibration isolation modules of the four two-freedom-degree driving vibration isolation modules are vertical. The driving vibration isolation platform is designed by adopting a module assembling structure, and each module can be looked as an independent vibration isolation stabilizing device which can realize driving and driven combined vibration control in vertical and horizontal directions. Under small-amplitude and low-frequency environment, each module can bear the two-freedom-degree directional driving vibration control of about 500 kg loads which are 27 times of the weight of the module, and the whole vibration isolation platform can bear the six-freedom-degree directional driving vibration control of 2000 kg loads.

A floating type automatic sucker rod screwing on and off device comprises a support, a back-up wrench, a moving wrench and a rotary wrench. The support is sequentially and coaxially provided with the back-up wrench, the moving wrench and the rotary wrench from bottom to top. The back-up wrench is used for clamping a coupling of a first sucker rod and providing reactive torque needed in screwing on and off. The moving wrench is used for clamping the wrench part of a second sucker rod and achieving tightening buckling and tight buckling. The rotary wrench is used for screwing off and screwing on the sucker rods. The floating type automatic sucker rod screwing on and off device has the advantages that the blank of the floating type automatic sucker rod screwing on and off device is filled in, full-automatic and intelligent development of a drilling rig is facilitated, the number of drilling operating personnel is reduced, the operating personnel are far away from a well mouth, the injuries of occurring accidents to the operating personnel are reduced, the integration degree is high, and modular design of downstream equipment is facilitated.

The invention provides a series-parallel inverter combined optical storage microgrid structure and a control method. The whole optical storage microgrid system is formed by an energy storage subsystemand a photovoltaic subsystem which are mutually connected in parallel, wherein the energy storage subsystem and the photovoltaic subsystem supply power for an equivalent regional load concurrently through respective line impedance. The energy storage subsystem and the photovoltaic subsystem are respectively formed by cascading a plurality of inverter modules which are mutually connected in series, and realize improvement in voltage level and power capacity. Compared with the traditional hybrid optical storage microsource, the system structure provided by the invention can realize flexible control for a single energy storage and photovoltaic unit and improve the conversion efficiency of the whole system. In addition, the invention provides an MPPT algorithm based droop control method in order to realize the maximum utilization ratio of renewable photovoltaic energy; and the invention provides an SOC algorithm based upper droop control strategy in order to realize supply and demand power balance of the system and the charge state balance between the series energy storage modules, and reasonable power flow and stable voltage frequency of the off-grid system are achieved without communication.

A non-isolated symmetric self-coupling 18-pulse rectifier power supply system comprises a phase-shifting autotransformer, three circuits of output devices, a time sequence controller and a power output end. The phase-shifting autotransformer is provided with three groups of output ends and one group of input ends, and the output device in each circuit comprises a zero-sequence suppression reversing inductor, a three-phase uncontrolled rectifier bridge and a bidirectional switch BUCK converter, which are connected to each other in turn. The time sequence controller is provided with three groups of control ends which are respectively connected to the control end of the bidirectional switch BUCK converter in each circuit. The output end of the bidirectional switch buck converter in each circuit is connected to the power output end.

The invention relates to a steel sound proof door which is extensively used for occasions where noise needs to be controlled, such as a studio, a theater, a broadcasting studio, a recording studio, a cinema, a sound damping chamber, an audiometric room, a machinery room, a sound proof cover and the like. A door leaf is arranged on a door frame through a swing-up type hinge, the door frame is welded on an embedded part of a door opening, cement mortar is poured into a gap between the door frame and the door opening, and a built-in type sealing threshold is adopted; the door frame is formed by spot-welding a front frame plate and a rear frame plate, the door leaf is formed by spot-welding a front leaf plate and a rear leaf plate into a whole, no steel structural frame is arranged in the door leaf, sound proof materials, sound absorption materials and damping materials are filled in the door leaf, magnetic sealing strips and sponge sound absorption strips are arranged at an intersected crack between the door frame and the door leaf, and the door frame and the door leaf can be overlapped with a door frame or a door leaf with a same structure to form the sound proof door with higher sound proof factor. The steel sound proof door has the advantages of reasonable structure, hermetical seal, easy opening and closing, attractive appearance, no cracking and no lower threshold; and the sound proof factor can be divided into a plurality of levels from 35 db to 55 db.

The invention discloses a four-die stepless speed change series-parallel hybrid power driving system, belonging to the technical field of automobile hybrid driving. The system comprises an engine, a clutch, two motors, corresponding transmission chains of the two motors, a power transfer switching device, a planetary gear differential device, a deceleration differential device, an energy storage device and a motor control device. The system provided by the invention has the characteristics of better technical inheritance with existing vehicles, overall dynamic property, fuel economy and low emission, and has functions of four-die driving, stepless speed change and series-parallel system; the problems of insufficient driving power, lack in ramp starting ability, large system volume and high cost of the existing similar technologies and the problems that the stepless speed regulation of the engine cannot be realized and the batch industrialization is difficult as the electromechanical components are difficult to manufacture are solved, and organic combination of high performance, low development cost, low system cost and easy implementation of scale industrialization is realized.

The invention relates to a quickly assembled bamboo frame house which comprises plate units, bamboo house frames, connecting pillars and connecting beams; wherein, the frame of the plate unit is made of bamboo veneers or wood beams; the external plate of the plate unit is made of bamboo veneers; the internal plate of a wall plate unit is made of gypsum plates or bamboo veneers or light wooden plates; the internal plate of a house plate unit is made of gypsum plates; and thermal-insulation material or sound-insulation material is filled between the external plate and the internal plate. The connecting pillars and the connecting beams are made of bamboo veneers; the connecting beam is connected with the side of the wall plate unit by bolts; and the wall plate units are connected with each other by the connecting pillars and bolts. The wall plate units at the corners of a house are connected with each other by bolts and angle steel. With excellent quakeproof performance and good thermal-insulation effect, the frame house provided by the invention can be processed and assembled quickly and can be dismounted and reused; moreover, the main construction material is environmental friendly and the material source is wide; therefore, the frame house has low manufacturing cost.

The invention discloses an electronic cigarette with an MEMS micropump. The electronic cigarette comprises a battery (307), an atomizing chamber (302) and a microcomputer control system (306), whereinthe top of the atomizing chamber (302) is connected with a suction nozzle (302), an aerosol spraying device (305) and a heater (309) are arranged at the bottom of the atomizing chamber (302), the heater (309) is in conduction connection with fluid of the micropump (305) through a micropump outlet (202), and the micropump (305) comprises a pump cavity formed by a pump membrane (102), an inlet pumpvalve (104A) and an outlet pump valve (104B); a driver (101) is arranged on the outer side of the pump membrane (102); the microcomputer control system (306) is electrically connected with the micropump (305) through an electrode terminal (313). An oil guiding piece does not make direct contact with a heating piece, the problem that an oil guiding medium is not heated uniformly due to the elasticity of an oil conducting medium and due to the fact that a traditional electronic cigarette makes tight contact with a heating element is avoided, and quantified active tobacco tar supply can be achieved.

The present invention relates to a preassembled tower section of a wind power plant and a method of transporting a tower section of a wind power plant, the method comprising the steps providing the tower section at a preassembly site, preassembling at least one electronic subsystem of the wind power plant onto the tower section, transporting the preassembled tower section from the preassembly site to an installation site. In effect transport thereof is considerably simplified and a higher degree of modular design and preassembly is achieved.

The invention provides a multi-purpose adaptive second-gear multimode stepless speed changing electric transmission integrated power system. The multi-purpose adaptive second-gear multimode stepless speed changing electric transmission integrated power system comprises a first motor and the like; a planetary gear train comprises a gear ring, a planet carrier and a sun gear; the rotor of the first motor is connected with the gear ring of the planetary gear train; the rotor of the second motor is connected with the sun gear of the planetary gear train and the input end of a transmission chain, respectively; a gear shifting device is connected with the input end of a speed reducing differential mechanism and control on power transfer from the planet carrier of the planetary gear train and the output end of the transmission chain to the speed reducing differential mechanism is realized; the output end of the speed reducing differential mechanism is connected with two wheels by use of two half shafts; a motor control device is connected with an energy storage device to transfer electric energy; the motor control device is further connected with the first motor and the second motor, respectively, and outputs control instructions. The multi-purpose adaptive second-gear multimode stepless speed changing electric transmission integrated power system has the characteristics of better technical inheritance to the existing vehicles, whole vehicle dynamic property, fuel economy and low emission.

The converter is composed of input reactor, n modules of rectification-inversion unit, and output reactor. The input reactor is connected to the input end of module of rectification-inversion unit at first stage, output end of which is connected to the output reactor. Input, output ends of modules of rectification - inversion unit in n stages are connected in series in sequence. All modules of rectification -inversion unit are composed of full controlled H rectification bridge, DC capacitance, and full controlled H inversion bridge. The DC capacitance is connected to the output end of the H rectification bridge, and the input end of the H inversion bridge in parallel. Features are: no need of input and output transformer, using low voltage part to realize high voltage and large power, implementing bidirectional flow of power with no harmonic wave by using SPWM method to control switch tubes, modularized design and balanced control for each cascaded voltage and power.

The invention relates to a combined antenna, in particular to an iridium and GPS (Global Positioning System) combined antenna for an underwater robot. The iridium and GPS combined antenna comprises an antenna adapter component, a fixed base, a connecting pipe and an antenna assembly which are sequentially and hermetically connected, wherein the antenna adapter component comprises a watertight cable, a setting framework, a connector locating ring and a coaxial connector; the setting framework is hermetically connected with the fixed base; one end of the setting framework is provided with the connector locating ring; the coaxial connector is inserted into the connector locating ring, and one end of the coaxial connector is connected with the watertight cable; the watertight cable is hermetically connected with the setting framework; the antenna assembly comprises an antenna housing fixing piece, an iridium antenna, a GPS antenna and an antenna housing; one end of the antenna housing fixing piece is in hermetical and threaded connection with the connecting pipe, and the other end of the antenna housing fixing piece is hermetically connected with the antenna housing; the iridium antenna and the GPS antenna are both encapsulated in the antenna housing and are respectively connected with the other end of the coaxial connector by virtue of a coaxial signal wire. The iridium and GPS combined antenna has the advantages of simple structure, good underwater sealing property and antenna signals, easiness for installation and the like.

The invention proposes a medicine bottle storing and taking mechanism, wherein a medicine bottle is slantingly placed wholly, a guide rail type sliding block mechanism is pushed by an elastic part so that the medicine bottle can be taken out from one side of an outlet conveniently, moreover, as a bottleneck of the medicine bottle to be taken is kept to be towards the outlet all the time, medicine can be taken faster and more conveniently compared with a storing and taking mechanism with the medicine bottle being vertically or horizontally placed. The medicine bottle storing and taking mechanism also comprises a sensing device which can detect that whether the medicine bottle is taken and whether residual medicine bottles are moved in place, calculate the total quantity of the residual medicine bottles and facilitate the management of a computer. The invention also proposes a medicine consumptive-material storing and taking system which comprises the medicine bottle storing and taking mechanism.

The invention relates to a suspension type special lamp shock absorber. The lamp shock absorber comprises a suspending fixed shell (100), shock absorbing rubber blocks (300), a metal pressing block (400), a shock absorbing spring (500) and a spring cover (600), wherein the suspending fixed shell (100) can be arranged at a fixed position; the shock absorbing rubber blocks (300) are arranged along the inner wall of the suspending fixed shell (100); the metal pressing block (400) is arranged in an enclosure consisting of the shock absorbing rubber blocks (300); and the shock absorbing spring (500) and the spring cover (600) are arranged on a connecting screw rod which passes through the suspending fixed shell (100) and the metal pressing block (400). The suspension type special lamp shock absorber provided by the invention effectively solves the problem of shock absorption for a special lamp during suspending installation, obviously improves the shock resistance of the special lamp or an object which is subjected to shock absorption, and obviously prolongs the service life of the special lamp to avoid the economic loss brought by bulb damage to a customer and save the maintenance cost; in addition, the suspension type special lamp shock absorber of the invention has the advantages of simple structure, low cost and convenient use.

The present invention relates to a preassembled tower section of a wind power plant and a method of transporting a tower section of a wind power plant, the method comprising the steps providing the tower section at a preassembly site, preassembling at least one electronic subsystem of the wind power plant onto the tower section, transporting the preassembled tower section from the preassembly site to an installation site. In effect transport thereof is considerably simplified and a higher degree of modular design and preassembly is achieved.

The invention discloses a machine tool for machining a propeller. The machine tool comprises a pedestal, a first machining device, a second machining device, and a workbench. The workbench is fixedly arranged on the pedestal, and the first machining device and the second machining device are symmetrically arranged on both sides of the workbench and are connected to the pedestal. The first machining device consists of a base, a support guide frame, an upper machining mechanism and a lower machining mechanism. The base is fixedly connected to the top surface of the pedestal, the support guide frame is fixedly arranged on the upper surface of the base, and the upper machining mechanism and the lower machining mechanism are respectively arranged on the upper part and lower part of the support guide frame. The upper machining mechanism comprises an upper fixation frame, an upper Y direction driving device, a slide carriage, and a parallel machining mechanism. The lower machining mechanism comprises a lower fixation frame, a parallel machining mechanism, and a lower Y direction driving device. According to the invention, the machine tool working space is expanded, also the rigidity and machining accuracy of the machine tool are improved, machining of the propeller can be completed by one-time clamping, and the efficiency is high.

The invention belongs to the field of sweepers, and discloses a suction sweeper sweeping mechanism which comprises a dust suction box, a disc brush and a rolling brush. The rolling brush is mounted in the dust suction box and provided with one-way spiral bristles, a power component of the rolling brush is arranged at the left end of the dust suction box, the disc brush is mounted on the right side of the dust suction box, a disc brush dust suction device is mounted in the upper front of the disc brush, the rolling brush rotatably brushes and sweeps ground and conveys dust and rubbish in the brushing and sweeping process to the left side of the dust suction box, the lower end of the disc brush dust suction device is communicated with the dust suction box, negative pressure in the dust suction box can be guided, disc brush raise dust is controlled and absorbed, the mechanism integrates a disc brush mechanism, a dust suction box mechanism and a rolling brush mechanism, energy sources are comprehensively used, excellent sucking and sweeping effects are achieved, flying dust of the disc brush in operation is recycled without adding additional energy sources and mechanisms, and secondary pollution to a sweeper can be effectively decreased.

The invention provides a micro electro mechanical system fuse security device. According to the structure of the micro electro mechanical system fuse security device, a longitudinal spring and sliding block driving part comprises a longitudinal fixing support, longitudinal springs and a longitudinal sliding block; one end of each longitudinal spring is connected to the longitudinal fixing support, and the other end of each longitudinal spring is connected with the longitudinal sliding block; a transverse spring and sliding block driving part comprises a transverse fixing support, transverse springs and a transverse sliding block; one end of each transverse spring is connected with the transverse fixing support, and the other end of each transverse spring is connected with the transverse sliding block; the longitudinal sliding block and the transverse sliding block are of a zigzag slot structure in appearance; the two zigzag slots are nested with each other to form a locking mechanism; a cavity is further formed by the zigzag slot structure of the transverse sliding block and used for containing a booster explosive component; the longitudinal spring and sliding block driving part and the transverse spring and sliding block driving part are both formed by integrally etching TiNi-based shape memory alloy thin films. The driving and execution are integrated, an external drive source is omitted, the overall structural size is small, the response time is short, and working reliability is high.