152results about How to "Low maintenance cost" patented technology

The utility model discloses a robot navigation system and a navigation method. The robot navigation system comprises a navigation network which is formed by a plurality of wireless access points, a wireless communication module which is used for transferring data and collecting the intensity sequence communicated with the wireless access points, a sensor which is used for checking that the robot meets barriers or not, and a position server which is used for storing the referenced intensity sequence and running the intricate position arithmetic, and is characterized in that the position server is connected with the wireless communication module and interacts with the navigation network. The navigation method is characterized in that the robot judges the next target position until reaches the destination by comparing the intensity sequence collected in real time with stored reference intensity sequence of the position points; when the robot meets barriers, the robot records and demarcates the intensity sequence of the position in order to avoid entering the position again, therefore achieving intellectual learning; the robot can upload the correlative information to the position server and achieve the assistant navigation position by the help of the database of the position server and the position arithmetic. The utility model is not likely to be affected by the environment and also has the advantages of low cost of maintenance.

An embedded wireless sensing network intelligent platform comprises network nodes, a base station, a wireless gateway, and a central control computer, and carries out communication according to an IEEE802.15.4-based Zigbee communication protocol standard. The technique provides an intelligent platform for an embedded wireless sensing network, which can combine required different sensors according to practical control requirement to develop wireless sensing network systems meeting different requirements. The intelligent platform can thoroughly get rid of a wire access manner adopted in conventional sensing control system, and overcome disadvantages such as wiring difficulty, high cost, and maintenance / management difficulty caused by the wire control manner. The platform has high development flexibility, wide operation and application ranges, low cost of system construction and maintenance. Compared with other wireless control manners, the system networking manner has the advantages of combined short-range multihop and grid manner, high intellectualization and reliability, high stability, low power consumption, and long service life.

The invention relates to a shear hysteretic damper, which comprises an upper rigid connecting plate and a lower rigid connecting plate which are connected with a building structure, a hysteretic energy-consuming web plate, and a flange plate, wherein the rigid connecting plates and the flange plate are fixedly connected to the hysteretic energy-consuming web plate. At least one side of the hysteretic energy-consuming web plate is provided with transverse stiffening ribs or / and longitudinal stiffening ribs. The flexibility-fineness ratio parameter of the hysteretic energy-consuming web plate is between 0.2 and 0.5, the plate thickness ratio of the flange plate to the web plate is not less than 4, the rigidness ratio of the stiffening ribs is not less than 3.0, and the shape factor is between 0.5 and 1.5. The hysteretic energy-consuming web plate is made of rolled steel the yield strength of which is not more than 235MPa, the flange plate and the rigid connecting plates are made of the rolled steel the yield strength of which is not less than 235MPa, and the stiffening ribs are made of the rolled steel the yield strength of which is not less than 235MPa. The shear hysteretic damper has the advantages of simple structure, stable performance, low manufacture and maintenance cost, small space occupation ratio, easy space distribution, replacement after an earthquake and the like.

The invention discloses a ground fault current compensation system and method for a self-produced power supply phase power supply. The system comprises a phase power supply generator, a phase power supply phase compensator, a fling-cut switch, a controller and a voltage transformation device. An output end of a phase compensator of a power supply is connected to a system neutral point through thefling-cut switch. The system can passively generate power distribution network power supply phase power supply and harmonic phase power supply and input anti-phase power supply phase power supply andthe harmonic phase power supply into the system according to fault logic. The complete compensation of power distribution network grounding fault reactive current, harmonic current and active currentis achieved, the defect that compensation is incomplete by adopting a power electronic device inversion injection method after electricity is taken from a bus system is overcome, and the problems thatan active inversion method has a poor metallic grounding compensation effect and a traditional arc suppression coil cannot achieve full compensation are solved. The system is efficient and accurate and can completely compensate overvoltage and overcurrent generated by a grounding fault, the safety of a power grid and equipment is guaranteed, and the risk of electric shock of a human body is completely avoided.

A bus arrival prompting system comprises a vehicle-mounted terminal, a network server and a client side. According to the system, an intelligent device of a user with a satellite positioning module and a wireless network data transceiver module is used as the client side, data carried with vehicle numbers and location information are sent to the network server through the vehicle-mounted terminal which is installed on the bus, the network server back feeds a vehicle line and a direction of the vehicle line and a position of the bus which is close to the user and travels in the direction of the user to the client side of the user according to a number and the direction of the vehicle line and a position of the user, the number and the direction of the vehicle line are inquired by the user through the client side, the client side displays an inquired real-time position icon of the bus on an electronic map in a screen according to the received location information of the bus, the vehicle speed and estimated time of arrival of the bus which is closest to the user are figured out, and simultaneously the figured out vehicle speed and estimated time of arrival of the bus are displayed on the screen of the client side.

The invention discloses steel slag asphalt graded crushed rock mixture. The steel slag asphalt graded crushed rock mixture comprises the following components in percentage by weight: 90-93 percent of aggregate particle, 4-6 percent of asphalt and 3-4 percent of limestone mineral powder, wherein the aggregate comprises the following four grain compositions in percentage by weight: 21-24 percent of grain composition 1, 20-28 percent of grain composition 2, 19-25 percent of grain composition 3 and 32-37 percent of grain composition 4; the granularity of the grain composition 1 is smaller than or equal to 31.5mm and larger than 19mm, the granularity of the grain composition 2 is smaller than or equal to 19mm and larger than 9.5mm, the granularity of the grain composition 3 is smaller than or equal to 9.5mm and larger than 4.75mm, and the granularity of the grain composition 4 is smaller than or equal to 4.75mm and larger than 0mm; and the aggregate is steel slag or the mixture of the steel slag and limestone. Proved by experiments, the mixture has the advantages of low cost, reasonable granularity grain size distribution, water proof performance and good stability.

The invention discloses an updating method utilizing full view camera to update streetscape database. The updating method includes (1), selecting a full view camera as streetscape data source to measure geographic position and shooting angle of the selected full view camera and locate on an electronic map; (2), selecting streetscape video at any time section taken by the full view camera and capturing some keyframes; (3), unfolding the overlook fisheye images of the captured keyframes to connect into an envisage full view image suitable for human eyes; (4), projecting the full view image on the full view coordinate system of the corresponding position of the electronic map according to the captured geographic position and shooting angles to form a full view map. The full view camera is taken as data source, so that the updating method has instantaneity and accuracy and is low in updating cost and maintaining cost.

The invention discloses a grounding fault current compensation system and method for a self-generated power supply phase power supply. The grounding fault current compensation system comprises a phasepower supply converter, a fling-cut switch, a voltage transformation device and a controller, wherein the input end of the phase power supply converter is connected with a bus, the output end of thephase power supply converter is connected with the input end of the fling-cut switch, the voltage transformation device is connected between the phase power supply converter and a system neutral pointin series, the controller is connected with a voltage transformer of the bus, and the output end of the controller is connected with the input end of the fling-cut switch. The system can passively generate a power distribution network power supply phase power supply and a harmonic phase power supply, and the reversed-phase power supply phase power supply and the harmonic phase power supply are put into the system according to fault logic, so that complete compensation of reactive current and harmonic current of the grounding fault of the power distribution network is achieved, the defect thatthe compensation is incomplete by adopting a power electronic device inversion injection method after electricity is taken from a bus system is overcome, and the problems that an active inversion method is poor in metallic grounding compensation effect and a traditional arc suppression coil cannot achieve full compensation are solved.

The invention discloses a pedal durability tester and belongs to the field of vehicle accessories. The pedal durability tester comprises a biaxial double-action type cylinder, two pedals, a rod end joint bearing, a pedal support, an experimental tool and a pneumatic system; two panels are fixed on the experimental tool via the pedal support; the biaxial double-action type cylinder is fixed on the experimental tool; two rod ends of the biaxial double-action type cylinder are connected with the rod end joint bearing; and the pneumatic system is connected to the tester via the biaxial double-action type cylinder. The pedal durability tester has the beneficial effects of capability of carrying out the durability test of the two pedals, convenience for maintenance and change and easiness for the acquisition of a gas source and low manufacturing and maintaining costs; and the reciprocating movement velocity of the cylinder can be continuously adjusted from a low speed to a high speed by adjusting the air inflow of the cylinder so as to meet the requirements on the test speed of the pedal under different conditions.

The invention provides an integrated switch for detecting the fall-into-water state and the inclination state and a fall-into-water self-rescue system with the integrated switch. The integrated switch for detecting the fall-into-water state and the inclination state comprises a vertically-placed limiting cylinder, a water level switch and an inclination switch. The limiting cylinder comprises a limiting cylinder first part and a limiting cylinder second part. The water level switch comprises a floating ball. The floating ball is arranged at the bottom in the first limiting cylinder first part. A first vacuum pipe is arranged on the top of the floating ball. A magnet is arranged in the first vacuum pipe and connected with the floating ball through a spring. An electromagnetic coil is arranged on the periphery of the first vacuum pipe. A movable contactor is arranged on the top of the first vacuum pipe. The inclination switch comprises a second vacuum pipe which is arranged above a third electrode point and a fourth electrode point. Mercury, a fifth electrode point and a sixth electrode point are arranged at the bottom in the second vacuum pipe. The integrated switch for detecting the fall-into-water state and the inclination state is simple in structure and low in cost and can automatically open a vehicle window when a vehicle falls into water or turns on one side or turns with the bottom upward so that an escaper can save himself / herself from the vehicle window and escape.

A magnetic levitation synchronous belt conveyor comprises a driving device, a transmission shaft, synchronous belt wheels, a magnetic conveying belt-permanent magnet suspension supporting device, a machine frame and a return roller. The driving device is connected with the transmission shaft which is provided with the two synchronous belt wheels in parallel. Synchronous belts are wound on the two synchronous belt wheels which are arranged in parallel respectively. The two synchronous belts are fixed at the edge of the inner surface of a conveying belt and are arranged in parallel. Permanent magnets are fixed at the center line of the inner surface of the conveying belt and are arranged at equal distance in the conveying direction on the inner surface of the conveying belt. A permanent magnet supporting device is fixed on the machine frame and replaces an upper roller support of a common belt type conveyor. According to the magnetic levitation synchronous belt conveyor, the conveying belt has magnetism, system manufacturing cost and maintaining cost are low, deviation and slipping cannot happen, operation resistance is low, efficiency is high, energy loss is low, operation is stable, noise is low, and high-speed operation can be achieved.

The invention discloses a punching device strong in pressure control effect. The punching device comprises a bottom supporting base plate and a main thread sleeve with the center provided with a mainthread section. The punching device can control the pressure during punching every time, and accordingly the punched product quality and success rate are improved. In addition, the device conducts control under the combination action of various mechanical components, and therefore the manufacturing cost of the device is low, the usage cost and the maintaining cost are lower, and the beneficial effect of economy is achieved. In addition, the device is provided with a three-point positioning and clamping control mechanism, the three-point positioning and clamping control mechanism conducts positioning so that the components can be located at the center position, and accordingly the punching production quality is improved. Furthermore, the device is provided with a large air pressure air one-way flow control mechanism, large air air-pressure one-way flow can be controlled, and the phenomenon of air backflow is avoided. In addition, the device is provided with a top thread screwing type maximum air pressure control mechanism, the punching air pressure maximum value can be controlled under the action of the air pressure, and accordingly the pressure value is controlled.

A circle structure of a motor grader excellent in durability at low maintenance cost. For this purpose, the circle structure includes a drawbar (105), at least one guide shoe (213) attached to the drawbar, an integrated ring-shaped circle gear (211) rotatably supported by the guide shoe, a plurality of circle gear mounting bolts (215) placed at equal pitches on a mounting pitch circle of the circle gear, and a circle (104) which is mounted to the circle gear by the circle gear mounting bolts and rotatable with respect to the drawbar.

The invention discloses a fine ferric oxide desulfurizing agent and a preparation method and an application method thereof. The fine ferric oxide desulfurizing agent is prepared from ferrous sulfate septihydrate, calcium hydroxide, copper sulfate pentahydrate, sodium hydroxide, bentonite and sodium carboxymethylcellulose through mixing, strip extrusion and drying, and comprises, by mass, 57%-68% of ferrous sulfate septihydrate, 18%-25% of calcium hydroxide, 3%-8% of copper sulfate pentahydrate, 6.5%-18% of sodium hydroxide, 3%-10% of bentonite and 1%-3% of sodium carboxymethylcellulose. The fine ferric oxide desulfurizing agent is applied to removal of natural gas, coke-oven gas, oil field gas, synthesis gas, methane, carbon dioxide and organic sulfur such as H2S, COS and mercaptan in liquid hydrocarbon feed gas under the normal-temperature anaerobic condition and is high in desulfurization precision and sulfur capacity. The environment-friendly fine ferric oxide desulfurizing agent is prepared without washing and filtering, and the preparation method has the advantages of simple production technology, low equipment investment and maintenance cost and suitability for large-scale industrial production.

The invention discloses a carrying device for a stair, and relates to the technical field of conveying equipment. The carrying device for the stair comprises transporting tracks, a carrying vehicle and a driving mechanism. The carrying device for the stair is suitable for a stair, by arranging the transporting tracks at the two sides of the stair in a disassembling mode, the carrying vehicle used for transporting goods goes up and down the stair through cooperating with the transporting tracks; the driving mechanism is arranged at the front end of the carrying vehicle, walking wheels at the rear end of the carrying vehicle is driven by driving for walking wheels at the front end of the carrying vehicle; and a ratchet wheel mechanism with a braking protecting function is further arranged for preventing backward slipping of the carrying vehicle. The carrying device for the stair has the characteristics of being simple but compact in structure, compared with existing small-scale carrying tools, the carrying device for the stair has greater heavy object carrying performance, installation is simple and convenient, manufacturing and maintaining cost is low, motor driving is not totally relied, and the carrying device for the stair can also be pulled out from the transporting tracks through manpower.

The invention discloses a profiled steel binding machine, which is characterized in that: the profiled steel binding machine comprises a fixed support, a guide rod which is arranged on the fixed support, a hydraulic cylinder which is deposited on the fixed support, a base which is located above the fixed support, and two placing bases which are used for placing packing belts for binding profiled steel. The guide rod passes through the base; the bottom part of the base is connected with the hydraulic cylinder; the base can move along the guide rod up and down through the hydraulic cylinder; the two placing bases are oppositely arranged on the upper surface of the base; the opposite faces of the two placing bases are arc-shaped; a distance between the arc-shaped faces becomes smaller gradually from up to down; and a distance between the lowermost ends of the arc faces corresponds to a size of the lower part of the profiled steel.

The invention discloses a hub bearing unit which comprises a hub, an outer bearing and an inner bearing. The outer bearing and the inner bearing are installed in an inner cavity of the hub. The innercavity of the hub is provided with a blocking table, the outer ring of the outer bearing and the outer ring of the inner bearing are located on the two sides of the blocking table correspondingly, theleft end of the inner ring of the inner bearing abuts against the right end of the inner ring of the outer bearing, the distance between the outer ring of the outer bearing and the outer ring of theinner bearing is larger than the width of the blocking table, the stepped shaft face of an axle housing spindle nose is sleeved with the hub through the outer bearing and the inner bearing, the rightend of the inner ring of the inner bearing abuts against the stepped end face of the axle housing spindle nose, the left end of the axle housing spindle nose is provided with a spindle nose nut, the spindle nose nut is screwed to tightly press the left end of the inner ring of the outer bearing, and therefore the hub bearing unit is fixed. In this way, the bearing clearance is always in the best state designed in advance, control can be achieved without adjustment, the bearing service life can be prolonged, the maintenance-free state in the guarantee period is achieved, and the automobile repair and maintenance cost is reduced. The invention further discloses an automobile comprising the hub bearing unit.

The invention relates to a controllable and intelligent magnetic-levitation belt conveyor. The belt conveyor comprises a magnet-clamping conveying belt, magnetic rollers, a magnetic track, a track supporting device, anti-magnetic return idlers, a supporting frame and supporting frame connecting rods; the conveyor adopts the magnetic driving manner; the magnet-clamping conveying belt is made of soft magnetic materials and comprises soft magnetic sheets and a coating film, and the soft magnetic sheets are inlaid in the coating film of the conveying belt; each magnetic roller comprises electromagnetic sheets and a driving roller, the electromagnetic sheets are reversible and are connected with magnetic sheets through leads, and the magnetic poles of the magnetic sheets are controlled throughcontrol on current directions; and the magnetic track comprises electromagnetic sheets and a track body, and the electromagnetic sheets are connected through leads. The conveying belt is suspended above the track and moves forwards according to the principle that like magnetic poles repel, the non-mechanical-friction contact is realized, an existing magnetic gasket type conveyor is optimized, thefriction between the conveying belt and idler groups during conveying is reduced by the aid of magnetic conveying, the service life of the conveying belt is prolonged, and the working efficiency of the conveying belt is improved.

The present invention discloses method of and device for setting carbon, temperature and oxygen detecting probe in steel making converter. Carbon, temperature and oxygen detecting probe is set into steel making converter obliquely via the material feeding pipe in the sealing fume hood. The device includes a frame, a probe bin, a paper tube turning tank, a paper tube guiding board, a paper tube pusher, a probe guide pipe, and a paper tube holder. The present invention has low cost, simple operation and easy application in automatic smelting process, and may be applied in replacing available detection.

The invention relates to an environmental contaminate phytoremediation technology, in particular to a method utilizing liana honeysuckles to remedy cadmium contaminated soil, which solves the problems of slow growing, small overground biomass, long remedy time and the like in the existing method for remedying plants growing in the cadmium contaminated soil. The method is that: honeysuckles are grown in the heavy metal cadmium contaminated environments (water bodies and soils), a better growing state can be maintained, the obvious poisoned symptom is not generated, and significantly different biomasses are not caused, the roots of the honeysuckles can absorb a great quantity of enrichment cadmium which contaminates the environment, and transfer the cadmium to the overground parts, so the cadmium accumulation amount of the overground parts exceeds the critical content standard 100mg / kg of the Cd super enrichment / accumulator plant, the concentration factor is more than 1, and the essential characteristics of the super enrichment / accumulator plant are obtained. The adopted method has low cost, is simple to operate, does not cause secondary pollution, is easy for aftertreatment, can effectively increase the green quantity and improve the ground landscape and the like while treat the environmental pollution.

The invention relates to a high-precision real-time positioning device and a method thereof. The technical characteristics are that the device comprises a polygonous receiver array composed of a plurality of single-point receivers; antenna phase centers of the single-point receivers are positioned at summits and center points of the polygonous receiver array; antennas of the single-point receivers are distributed in a same plane; each single-point receiver comprises an MCU and a receiver connected to the MCU; and the MCUs are in parallel connection and together connected to a processor module. According to the invention, the plurality of single-point receivers are arranged in a regular polygon mode to form a receiver array circuit, and can directly utilize and process positioning signals emitted by a signal source so as to substantially raise the positioning precision. The high-precision real-time positioning device has characteristics of reasonable design, high precision, low cost, convenient usage, etc. The device and the method can be widely applied to the general civil field of high-precision real-time positioning navigation.

The invention relates to a hydraulic drive differential feed system, which comprises an oil cylinder (3) and a ball screw(4) arranged at the front end of the oil cylinder (3); a third gear (7) is arranged at the front end of the ball screw (4); a first gear (5) is fixed on a nut (13) of the ball screw (4); the first gear (5) is meshed with a second gear (2); a fourth gear (6) is hollowly sheathed on a main shaft (1); the fourth gear (6) is meshed with the third gear (7); a fifth gear (8) is positioned at the left side of the third gear (7) and is meshed with the fourth gear (6); a first bevel gear (9) is meshed with a second bevel gear (10) on which a lead screw (11) is fixed. The differential feed system overcomes the shortcomings of the existing differential feed system of a metal cutting machine tool that not only is the number of the grade limited, but also the amount of feed of the machine tool can not be infinitely regulated and the maintenance cost is high. The hydraulic drive differential feed system has the advantages of large transmission torque and better meeting the requirements of processing and manufacturing industry and that the feed speed can be infinitely regulated.

The invention discloses a grounding fault current compensation system and method for a self-produced power supply phase power supply. The system comprises a phase supply power converter, an on-off switch, a voltage regulator and a controller. The input end of the phase power supply converter is connected with a bus, and the output end is connected with the input end of the on-off switch. The common connection point of the on-off switch and the system neutral point are connected on the non-homonymous ends on the two sides of the voltage regulator, and the remaining connection points of the voltage regulator are grounded. The controller is connected with the voltage transformer of the bus. The output end of the controller is connected with the input end of the on-off switch and the voltage regulator. The system can passively generate the power supply phase power supply and the harmonic phase power supply of a distribution network and put the reverse phase power supply and the harmonic phase power supply into the system according to the fault logic so as to realize complete compensation of reactive current, harmonic current and active current of the distribution network grounding fault and solve the problems of poor metal grounding compensation effect of the active inverter method and inability of complete compensation of the traditional arc suppression coil.

The invention provides an external air purification device for an air conditioner. The external air purification device for the air conditioner comprises an electrostatic precipitation unit, a control unit and a housing and is characterized in that the control unit comprises a wireless communication module and an infrared ray emitting apparatus and can receive external control instructions and send remote control instructions to the air conditioner or other electric devices, the external air purification device comprises an air flow switch for detecting the start state of an indoor unit of the air conditioner for further automatically starting and stopping the purification unit according to the start and stop of the air conditioner, the electrostatic precipitation unit comprises an air flow channel formed by electrically conductive material films or sheets and a plate array, the spaced two electrically conductive materials are connected to the same electrode of a high-voltage electrostatic power supply, and at least one of the adjacent two electrically conductive materials is an electrically conductive material coated with an insulating material. Therefore, the external air purification device for the air conditioner can quickly add an air purification function to the indoor unit of the air conditioner, has the advantages of being high in purification efficiency, small in air resistance, intelligent in control and the like and can be used as an intelligent home control center if the external air purification device is provided with an air quality sensor.

The invention relates to a biomass semi-gasification heating system. The biomass semi-gasification heating system comprises a biomass semi-gasification furnace, an energy-saving water tank, a heat exchanger, a chimney and an air pre-heating pipe. The biomass semi-gasification heating system organically combines the biomass semi-gasification furnace, the energy-saving water tank, the chimney, the air pre-heating pipe and the indoor heat exchanger together, the combustion and reverse combustion technology is fully used in the design of the biomass semi-gasification furnace, a water cooling wall forms a hearth, the design concept that the air pre-heating pipe conveys the needed air is adopted, the energy-saving water tank is designed into four areas, the structure that water cooling pipes are communicated with the related areas is adopted, and the design of the whole system accords with the concept of energy conservation, so that the biomass semi-gasification heating system is not only low in production, manufacturing, use and maintenance expense, but also convenient to popularize in rural areas. The biomass semi-gasification heating system overcomes the defects of a common heating furnace and a common biomass gasification heating furnace, and improves the effective use efficiency of biomass energy.

The invention discloses a mechanical catapult for carrier-based aircraft. The mechanical catapult comprises a transmission shaft, a winch, clutches, brakes, a flywheel, a wire rope, a runway, and a slide. The mechanical catapult is technically characterized in that except the brakes disposed on a housing and the runway and the slide both disposed on a deck, the rest are all disposed on the transmission shaft; two trays are disposed on the transmission shaft and include one which supports a winch assembly and the other which supports the clutches. The winch assembly is braked to stop rotating, the clutches rotate in the center of the winch along with the transmission shaft, engaging-disengaging sliders are inserted into connections of the winch before catapulting, the winch is driven to rotate with the transmission shaft so as to wind the wire rope onto the winch, and the slide is pulled to drive an aircraft to take off. Catapulting powers are various; a water turbine and a gas turbine are taken as examples in the invention; when the water turbine is used as a power source, water is driven in by self-power of an aircraft carrier through an inflow gate, or a high-pressure water pump is driven by a motor, a diesel engine or the like to impact an impeller, and power is generated; when the gas turbine is used as a power source, power is transmitted to the transmission shaft through a reducer so that catapulting is available.

The invention discloses a roadbed protective system in a debris flow gully and an implementation method for the roadbed protective system, and the roadbed protective system is arranged along the debris flow gully (7). The roadbed protective system comprises a blocking dam (2), a stop and deposit field (3), a drainage guide culvert (4) and an energy dissipation slot (5), wherein the blocking dam (2) is positioned in an upstream channel of the debris flow gully (7); the stop and deposit field (3) is positioned between the blocking dam (2) and a roadbed filling body (1) arranged at the downstream; an inlet of the drainage guide culvert (4) is mutually jointed with the stop and deposit field (3); the drainage guide culvert (4) transversely penetrates through the roadbed filling body (1); and a downstream slope surface at the outlet of the drainage guide culvert (4) is jointed with the energy dissipation slot (5). The roadbed protective system overcomes the defects that a drainage guide structure in the prior art is easily damaged and finally causes the roadbed to be destroyed by rush of water, and has the advantages of reducing scouring, on the both sides of the channel, of debris flow, and prevents most of rock blocks from discharging.

A vehicle automatic networking apparatus with a first component and a second replaceable component includes a first identity recognition module on the first component and a second identity recognition module on the second component. The second module in a networking mode transmits a low frequency wake up signal through a low frequency signal transmission circuit to wake up the first module. A first identity recognition module low frequency sensor circuit senses the low frequency wake up signal, and responds by transmitting an identity code of the first component through a low frequency signal transmission circuit. A second module low frequency signal receiving circuit receives and stores the first component identity code. In a following data transmission, the second module sends data with the identity code, and a first component receiving apparatus identifies it. The first and second modules are both located rearward of a second component connection hitch.

The invention discloses a management method of a eutrophic water body. The management method comprises the following steps: uniformly mixing bacillus subtilis, nitrifying bacteria and denitrifying bacteria according to a certain ratio to prepare a denitrification, dephosphorization and algal inhibition compound microorganism preparation, wherein the content of beneficial bacteria in the denitrification, dephosphorization and algal inhibition compound microorganism preparation is as follows: the content of the bacillus subtilis is greater than or equal to 8.0*10<8>cfu / g, the content of the nitrifying bacteria is greater than or equal to 2.0*10<6>cfu / g and the content of the denitrifying bacteria is greater than or equal to 2.0*10<6>cfu / g; directly and uniformly scattering potassium peroxymonosulfate sulfate compound salt grains into a water body to be managed, and directly scattering according to the dosage of 50 to 1000g / Mu / m, and keeping the water body on an electric potential of 500MV or more; after adding the potassium peroxymonosulfate sulfate compound salt and treating the water body for 12h, directly and uniformly scattering the denitrification, dephosphorization and algal inhibition compound microorganism preparation into the water body to be managed, and directly scattering according to the dosage of 50 to 500g / Mu / m. The preparation is directly added by phases and doesnot need to be aerated; the denitrification, dephosphorization and algal inhibition effect is obvious and water body electric potential balance, bacterium phase balance and algal phase balance and a self-purification capability of the water body is formed.

The invention belongs to the field of dust removal equipment, and discloses a combined dust removal device. The device comprises a cyclone dust collector, a horizontal re-separation segment and a dust removal bag, wherein the horizontal re-separation segment comprises a barrel; the side wall of the inlet end of the barrel is provided with a tube I; the side wall of the outlet end of the barrel is provided with a tube II; a central discharge tube is arranged at the outlet end of the barrel; the outlet of the cyclone dust collector is tangentially connected with the inlet of the barrel through the tube I; the inlet of a bag-type dust collector is tangentially connected with the outlet of the barrel through the tube II. The dust removal device provided by the invention has the advantages of small floor area, small investment, low maintenance cost, small pressure drop and long service life; the dust removing efficiency of the whole set of device can be over 99 percent, the dust removing efficiency of the device is increased, and a good dust removing effect is achieved; the combined dust removal device can meet the current environmental emission requirement, and can be widely applied to dust removal of industrial effluent gas from industrial kilns, boilers, flue gas and the like.