41results about How to "Solve the defect of single function" patented technology

The invention provides a multi-meteorological-parameter synchronous measuring method based on spectrum characteristic signals and a laser radar. Various kinds of scattering spectrum characteristic information is extracted from a detected laser echo signal spectrum, further, inversion is carried out on the atmospheric wind field through the frequency deflection in the detection spectrum signals, the detection on the gas density is realized through detecting the Rayleigh scattering spectrum energy, the detection on the atmospheric temperature can be realized through detecting the full width at half maximum of the Brillouin scattering spectrum or the Brillouin frequency shift, and the detection on the aerosol concentration, optical thickness and the like is realized through detecting the Miescattering spectrum energy, so the defect of the single function of the traditional time domain laser radar is solved, and the goals of multi-parameter synchronous measurement and operation cost reduction are reached.

The invention discloses a bilateral upper limb rehabilitation training device which comprises a support, a rotating shaft, two swing arms, two movable rods, two handles and a positioning rod. The rotating shaft is arranged horizontally, the two ends of the rotating shaft are erected on the support, the two swing arms are meshed and nested on the rotating shaft, piston holes are formed in a pistonportion, one ends of the two movable rods are inserted into the piston holes, the two handles are fixedly installed at the other ends, stretching out of the piston holes, of the two movable rods respectively, and the two ends of the positioning rod are fixedly connected to the other ends, stretching out of the piston holes, of the two movable rods respectively. The device is simple in structure, multifunctional, high in practicability and capable of effectively solving the problems that an existing rehabilitation training device is complex in structure, poor in stability, single in function, high in price and the like.

The invention relates to a novel portable USB (universal serial bus) concentrator. Mobile power supplies and USB concentrators are matched products necessary for the daily use of mobile devices such as mobile phones, and conventional mobile power supplies and USB concentrators are independent products, and are required to be bought, stored and used respectively, so that great inconvenience is caused. The novel portable USB concentrator comprises a shell, wherein an uplink USB interface and downlink USB interfaces are arranged in the shell; a HUB and power management chip, a discharge management chip, downlink USB interface discharge management chips, a boosting chip, a charging chip and an AC-DC (alternating current-direct current) converter and safety plug are arranged in the shell. The novel portable USB concentrator is a product combining a mobile power supply and a USB concentrator, and the AC-DC converter and safety plug in the concentrator can be used for simultaneously providing power for a plurality of mobile devices, so that convenient and rapid experiences are provided for users, and the shortcoming of being undiversified in function of the two products, namely the mobile power supply and the USB concentrator, is overcome.

The campus service crowdsourcing platform disclosed by the invention comprises a demand publishing unit, an audit unit, a fund trusteeship unit and a social activity unit. The demand publishing unit is configured to publish a demand task by a demand side. The approval unit is configured to approve whether the requirements published by the demand side meet the publishing conditions, and the publishing conditions include whether the difficulty of the requirements task matches the ability of university students and the description details of the requirements task, and the requirements task afterthe approval is published; The fund trusteeship unit is configured to manage a bounty paid by a demanding party to a server that completes a demanding task; The social activity unit is configured to publish activity details, and a user who intends to participate can sign up to participate in the activity; The audit unit is further configured to audit the social activity details. The campus servicecrowdsourcing platform of the invention not only provides a demand task matched with the ability of university students, and improves the practical ability of students, but also provides a platform for social activities, and improves the social ability of students.

An energy-saving type tap nozzle comprising a sleeve, an externally-connected pipe mounted on the sleeve and an atomizer mounted between the sleeve and the externally-connected pipe. The externally-connected pipe is in screwed connection with an external tap water outlet. A water inlet is formed in the externally-connected pipe. The atomizer comprises a water outlet disc, a rubber ring and an atomizing piece, wherein the rubber ring and the atomizing piece are mounted on the water outlet disc. The water outlet disc comprises a bottom disc and a flow guiding column integrally connected to the middle of the bottom disc. The flow guiding column is sleeved with the rubber ring. Water flow holes are formed in the bottom disc. The flow guiding column is provided with an inward-extending assembly groove. The atomizing piece is mounted in the assembly groove. The groove bottom of the assembly groove further penetrates inwards to form an atomizing opening. When the sleeve is loosened, water flows turn into a columnar shape to be sprayed from the water flow holes in the bottom disc of the atomizer. When the sleeve is screwed up, the water flows are sprayed from the atomizing opening in an atomized mode. According to the energy-saving type tap nozzle, water can be sprayed in a water column mode and an atomized mode simultaneously, the water using amount is saved, practicability is high, and high popularization significance is achieved.

The invention discloses an experimental practical training integrated device for electrical automation teaching. The experimental practical training integrated device comprises a supporting table, wherein an accommodating tank is arranged in the position, close to the rear edge, of the upper part of the supporting table; an experimental practical training unit is arranged in the accommodating tank; a control unit is arranged on the outer side wall, close to the front part of the supporting table, of the accommodating tank; a programming unit is arranged in the position, close to the front edge, of the upper part of the supporting table. The experimental practical training integrated device is reasonable in design, safe, reliable, stable to operate and convenient to move, has better vibration reducing performance and is not easily damaged, the defect of single function of a traditional experimental practical training device for electrical automation teaching is overcome, the teaching effect is effectively improved, a teacher can be assisted to perform practical training on students through combination of practice with theory, so that not only can comprehensive knowledge level of theelectrical automation of the students be improved, but also the students can be aware of lack of electrical automation knowledge, and the device is beneficial to the students to make up the deficiency by hard studying later.

A room wall switch circuit with a light-operated LED night light comprises a switch, of which one end is connected with a live wire end of a 220v power supply, and the other end is connected to the zero line end of the 220v power supply via a large lighting lamp. First capacitors are parallelly connected to the two ends of the large lighting lamp. One end of the switch is connected to one end of a bridge type rectifier diode via a second capacitor, and the other end of the switch is connected with the other end of the bridge type rectifier diode. A third capacitor and a Zener diode are parallelly connected to one end of the bridge type rectifier diode. After one end of the third capacitor and one end of the Zener diode are parallelly connected to the bridge type rectifier diode, the other ends of the third capacitor and the Zener diode are grounded. The cathode of the Zener diode is connected with one end of a first resistor, and the other end of the first resistor is connected with a serial circuit formed by a first night light and a second night light. A photoresistor is connected to the anode of the first resistor, the other end of the photoresistor is connected to the base electrode of a triode, and the base electrode of the triode is grounded via a third resistor. The collector electrode of the triode is grounded, and the emitter electrode of the triode is connected with the cathode of the second night light.

The invention discloses an upper limb rehabilitation training device. The upper limb rehabilitation training device comprises a support, a transmission shaft, a motor, two cylinders and two handles, wherein the transmission shaft is arranged horizontally and two ends of the transmission shaft are separately erected on the support; the motor is fixed on the support; a rotating shaft of the motor iscoaxially and fixedly connected with the transmission shaft; the two cylinders are engaged with each other and sleeve the transmission shaft; a piston cavity, a piston rod and two air holes are arranged in a piston portion; one end of the piston rod is inserted in the piston cavity; and the piston rod can carry out piston type reciprocating movement in the piston cavity under the effect of an external air pump. The upper limb rehabilitation training device is simple in structure, diversified in function and high in practicality, and the problems that existing rehabilitation training equipmentis complicated in structure, poor in stability, single in function, high in price and the like are solved effectively.

The invention relates to a multipurpose lifeboat crane which comprises a base, wherein a suspension arm is arranged on the base through a slewing bearing, fast releasing hooks connected with a lifeboat are arranged at the bottom of the suspension arm, a lifeboat winch is arranged at the lateral portion of the suspension arm, and a hand pulling slewer and a hand pulling lowering device are connected onto the lifeboat winch through steel wire ropes respectively and used for controlling slewing and lowering of the lifeboat. An electric lifting winch is arranged at the upper portion of the suspension arm and connected with a lifting hook through the steel wire rope, and the lifting hook is positioned at the head of the suspension arm. Due to the fact that the lifeboat winch is arranged on the lateral portion of the suspension arm and the hand pulling slewer and the hand pulling lowering device are connected onto the lifeboat winch through the steel wire ropes respectively, the lifeboat can be quickly lowered to achieve escape. The lifting hook is arranged on the suspension arm through the electric lifting winch, therefore, goods can be hoisted, and the shortcoming that the lifeboat in the prior art is single in function is overcome. Furthermore, the multipurpose lifeboat crane is flexible and reliable in usage, capable of saving cost and small in floor space.

The present invention provides a multifunctional clutch, comprising an inner ring, an outer ring, a friction piece, a centrifugal block, a star wheel, a flange plate and a hinge coupler. The hinge coupler comprises a pin rod, a coupler shaft fork, a cross block and a plug pin; the clutch is connected with an output shaft through the hinge coupler; five driving friction pieces and five driven friction pieces are mounted between the inner ring and the outer ring; the inner ring is connected with the star wheel through two single-row radial ball bearings; a return spring is mounted between the star wheel and the retaining check ring; ten cylindrical rollers with retainers are used for loosening or tightening when clutching; the outer ring is provided with six centrifugal blocks; the outer ring input end is connected with the coupler shaft fork; a screw is mounted at the end part of the coupler shaft fork; the screw is sleeved with a return pressure spring; the output end is provided with a pressure plate; the coupler shaft fork is connected with the flange plate through the pin rod and the plug pin; and the flange plate is fixedly connected with the power source through six bolts and mounting holes. The clutch is featured with simple size, compact structure and simple adjusting, and integrating the friction clutch, the overrunning coupler and the hinge coupler into one.

The invention relates to an escape cushion mechanism of a passenger vehicle. The escape cushion mechanism of the passenger vehicle comprises a cushion assembly, a transverse motion assembly, a longitudinal motion assembly and a lifting assembly. The cushion assembly comprises an embedded plate and a sliding plate, the transverse motion assembly comprises a transverse sliding rail and a cylinder A, the longitudinal motion assembly comprises a bottom plate and a longitudinal sliding rail, and the lifting assembly comprises a sliding block, a revolving shaft, a Y-shaped support, a cylinder B, a cylinder C, a cylinder D, a lifting shaft A, a lifting shaft B, a worm and gear assembly and a motor. When traffic accidents occur, the escape cushion mechanism can lift the seat of the passenger vehicle and send passengers out of the vehicle so as to help the passengers to escape a cab of the passenger vehicle, particularly to the disabled. The escape cushion mechanism of the passenger vehicle overcomes the defect of single function in the prior art and is reasonable in structure and strong in practicability.

The invention discloses a target preposition selection method in image recognition of an Android system, and belongs to the technical field of digital image recognition. The method specifically comprises the steps of: enabling a user to select a system service pack on a cloud server according to a to-be-recognized image for downloading, if no corresponding system service pack exists on the cloud server, uploading and then downloading the service pack defined by the user to the cloud server, decompressing the downloaded service pack, decompressing a dex file, a so link library file and a model file, and rebuilding an image recognition function in an Android system to realize preposed selection of a to-be-recognized image, wherein each of the system service pack and the user-defined service pack comprises a model file, a so link library file and a dex file. According to the method, dynamic switching can be achieved for recognition of different types of targets in Android system image recognition, an App packet does not need to be frequently published, and meanwhile the size of the APP packet is not additionally increased.

The invention discloses a multifunctional acoustic wave therapeutic apparatus, which has two main therapeutic functions of acoustic wave and bioelectricity. A power supply converting device 1 is connected with a microcomputer processor 2; a control display device 3 is connected with the microcomputer processor 2; the microcomputer processor 2 is connected with an audio frequency power amplifier circuit 6; the audio frequency power amplifier circuit 6 is connected with an acoustic wave therapeutic head 8; the acoustic wave therapeutic head 8 is used for acting a received amplified acoustic signal to the human body; the microcomputer processor 2 is connected with a pulse booster circuit 7; the pulse booster circuit 7 is connected with a bioelectrode paster 9; and the bioelectrode paster 9 is used for acting a received bioelectric signal which is subjected to voltage boosting treatment to the human body. According to the invention, the resource is saved; the therapeutic range is expanded; and the therapeutic effect is enhanced; a plurality of groups of acoustic wave signals and a plurality of groups of bioelectric signals are stored inside the microcomputer processor 2; with the adoption of the scheme, a corresponding signal can be selected according to the condition of a user so as to carry out targeted therapy; the therapeutic time is shortened; the therapeutic effect is enhanced; and the therapeutic effect is long lasting.

The invention discloses a novel PET (Polyethylene Terephthalate) membrane which comprises a support membrane layer, wherein the support membrane layer is of a conical structure; the outer surface of the support membrane layer is adhered to a buffer layer and a dampproof layer in a matching manner from the inside out; the inner wall of the support membrane layer is clung to one side of a fireprooflayer through an acrylic adhesive; the other side of the fireproof layer is clung to one side of an anti-scratching layer through a thermal insulating layer, a heat preservation layer, an insulating layer, an ink layer and a plurality of metal conductive foil layers in sequence; a PET release film is laminated onto the other side of the anti-scratching layer. The novel PET membrane provided by theinvention adopts the hollow conical support membrane layer, is attractive in appearance and capable of reducing the cost, achieves a buffering protection effect by virtue of the buffer layer, has performances such as moisture prevention, fire prevention, thermal insulation, heat preservation, insulation, electric conduction, scratch resistance and the like, is easy to strip, high in practicalityand wide in application prospects, and can overcome the defect that the conventional PET membrane has a single function.

The invention discloses a household carpet temperature control system in the technical field of electrical products. The household carpet temperature control system comprises a carpet body, wherein the top left side of the carpet body is provided with a heating device, the surface of the heating device is provided with a display screen, the electrical input of the display screen is connected witha row driving module and a column driving module, the electrical input of the row driving module and the electrical input of the column driving module are connected with a display output module, the electrical input of the display output module is connected with a central processing unit, and the electrical output of the central processing unit is connected with a heating system. The household carpet temperature control system adopts a temperature sensor so as to sense the temperature of the carpet in real time, automatically regulates the temperature through a central processing unit temperature regulating circuit so as to enable the temperature to be maintained in a moderate range, and can manually regulate the temperature and set the ideal temperature through a key input system, therebysolving a defect of single function of common carpets in the market at present.

A water-saving type faucet nozzle comprises a sleeve, an exterior tube and an atomizer, wherein the exterior tube is arranged on the sleeve; the atomizer is arranged between the sleeve and the exterior tube; the exterior tube is in screwed connection with an external faucet water outlet; a water inlet hole is formed in the exterior tube; the atomizer comprises a water outlet plate, a rubber ring and an atomizing head; the rubber ring and the atomizing head are arranged on the water outlet plate; the water outlet plate comprises a bottom plate and a flow guiding column which is connected to the middle of the base plate in an integral forming manner; the rubber ring sleeves the outer side of the flow guiding column; water flow holes are formed in the base plate; an assembling groove which extends inwards is formed in the flow guiding column; the atomizing head is assembled in the assembling groove; the groove bottom of the assembling groove is further pierced inwards to form an atomizing opening; when the sleeve is released, water flow becomes columnar water flow, and the columnar water flow is sprayed out from the water flow holes of the base plate of the atomizer; and when the sleeve is tightened, the water flow is sprayed out from the atomizing opening in an atomized manner. The water-saving type faucet nozzle simultaneously has a function of spraying water columns and an atomizing function, and the water use amount is reduced; and the water-saving type faucet nozzle is high in practicality and has great popularization significance.

The invention discloses a method for producing functional type environment-friendly and high-precision digital yarn-dyed jacquard wall cloth. The wall cloth is composite wall cloth and comprises an ultra-high molecular weight polyethylene non-woven fabric layer and a wall cloth surface layer, wherein the wall cloth surface layer is composited on the outer surface of the ultra-high molecular weight polyethylene non-woven layer. The specific operation is as follows: based on requirements of customers, organization design of large-jacquard patterns and formulation of reasonable technological parameters are performed on a fabric of the wall cloth surface layer in a graph scanning manner; winding, warping, weaving and self-cleaning finishing are performed on the fabric of the wall cloth surface layer; finally, the large-jacquard fabric, taken as the wall cloth surface layer, is bonded with the ultra-high molecular weight polyethylene non-woven fabric, adopted as the bottom layer, with a composite technology. According to the method, a large-jacquard digital design technology is adopted, and the personalized high-precision digital yarn-dyed jacquard wall cloth which is provided with special surface effects including sags, crests, embossment and the like, and has a favorable market prospect but relatively lagging product development is designed by composition of different materials and design of the woven fabric structure, and the requirement for the individuality pursuit of fashion fabrics is met.

The invention belongs to the technical field of coffee machine part pretreatment, and particularly relates to a coffee machine processing part pretreatment device which comprises a shell, one side of the top of the shell is fixedly connected with a first supporting plate, and the other side of the top of the shell is fixedly connected with a second supporting plate. Fixing rings are fixedly connected to the top of the first supporting plate and the top of the second supporting plate, a top cylinder is rotatably installed in the middle of the fixing rings, a transmission assembly is installed on the side face of the first supporting plate, a supporting assembly is installed in the shell, an adjusting assembly is installed on the top of the top cylinder, and a sealing bearing is installed in the middle of the top cylinder; an air guide pipe is mounted in the sealing bearing, a limiting groove is formed in the top cylinder, and a sliding rod is slidably mounted in the limiting groove; the part pretreatment device not only can adapt to polishing work of bowl bodies with different sizes and different cambered surface shapes, but also can stably polish bowl surfaces under the condition that the bowl bodies are not clamped.

The invention belongs to the technical field of kitchen utensils, and particularly relates to a multifunctional kitchen knife. The multifunctional kitchen knife comprises a hilt and a knife body, and is characterized in that the upper end of one side, which is close to the hilt, of the knife body is provided with an opener which is shaped like an arc-shaped notch, and a plurality of projections, the material of which is stainless steel, are evenly arranged as a peeler on the side of the knife body. The multifunctional kitchen knife has a simple structure, and is convenient to use; the multifunctional kitchen knife solves the defect that conventional kitchen knives have only one function, and not only can open wine bottles, but also can be used for peeling, thus bringing convenience to the lives of people; the production cost is low, so the multifunctional kitchen knife is convenient to popularize and apply.

The invention discloses a carbon square processing machine. The carbon square processing machine comprises a supporting seat and a furnace body, the furnace body is installed above the supporting seat, a first support is fixed to the left side of the furnace body through bolts, a second support is fixed to the right side of the furnace body through bolts, a bottom shell is rotatably installed at the top end of the first support, an upper shell is hinged to the upper portion of the bottom shell, the upper shell is of a net structure, connecting plates are fixedly arranged on the right side of the bottom shell and the right side of the upper shell, clamping rings are attached to the outer sides of the connecting plates, limiting blocks are slidably installed in the connecting plates and connected with the connecting plates through springs, synchronous belts are attached to the outer sides of the connecting plates, fixing plates are fixedly connected to the surfaces of the synchronous belts, a belt wheel is attached to the lower portion of the synchronous belt and rotationally installed on the right side of the furnace body. The carbon square processing machine can conduct shaking type stir-frying work, meanwhile, a cutting knife can make reciprocating motion through a folding rod on the device, and the function of automatically cutting materials to be processed in the processing process is achieved.

The present invention discloses a zero power consumption touch switch module circuit which is applied to an electronic product. A button switch and a touch switch are used to turn on and turn off a switch of an electrical appliance. In a state that the electrical appliance is turned off, zero power consumption standby of the electrical appliance is achieved. A fifth pin is connected to a +5V power supply of the electrical appliance, and a sixth pin is connected to a CPU control startup and shutdown signal controlling terminal, wherein the low level is used as a startup signal. A third pin and a fourth pin of an optical coupler IC2 are connected to startup and shutdown controlling terminals of the controlled electrical appliance. A first pin is connected to a power supply input end of a 220V power supply, and a seventh pin is connected to one end of a 220V power input of the controlled electrical appliance. After the 220V power supply is connected, the 220V voltage at the L end of the first pin is divided into two paths. One path of the voltage supplies power to a first pin of a bidirectional triode thyristor VT1. The other path of the voltage is connected to a bridge rectifier diode a via a capacitor C1, and the voltage is stepped down by the capacitor C1, rectified by the bridge rectifier diode a, stabilized by a voltage-regulator diode VD1 and filtered by a capacitor C2, and then a 9V voltage is output for powering interior luminescent tubes of an optical coupler IC1 and the optical coupler IC2.

The invention belongs to the technical field of kitchen supplies, and particularly relates to a scraping kitchen knife facilitating bottle opening. The scraping kitchen knife facilitating bottle opening comprises a knife handle and a knife body, and is characterized in that a bottle opener in an arc groove shape is arranged at the upper end of one side, close to the knife handle, of the knife body, and a plurality of protrusions made of stainless steel are evenly arranged on the side faces of the knife body to serve as scraping devices. The scraping kitchen knife is simple in structure and convenient to use; the defect that an existing vegetable knife is single in function is overcome, and the scraping kitchen knife can be used for opening a wine bottle and also can carry out scraping; convenience is brought to life of people; and the construction cost is low, and the knife is convenient to apply and popularize.

The invention discloses a power saving socket of an electric water heater. The power saving socket comprises an end L and an end N which are connected to a power supply 220V, and further comprises a first capacitor C1, bridge type rectifiers D1 to D4, a voltage stabilizing diode VD1, a second capacitor C2, a first photosensitive resistor VR1, a fifth resistor R5, a fourth resistor R4, a sixth resistor R6, a seventh resistor R7, a first triode Q1, a socket CZ1, a bidirectional controllable silicon VS1, a first resistor R1, a second resistor R2, a bidirectional triggering diode VB1, a photoelectric coupler IC1, a third resistor R3, a third capacitor C3, a sixth triode Q6, a second triode Q2, a ninth resistor R9, an eighth resistor R8, a third triode Q3, a tenth resistor R10, a fourth capacitor C4, a fourth triode D4, a fifth diode D5, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fifth triode Q5 and a touch point P1. The power saving socket is simple in circuit structure and good in actual application effect; the shortcoming that the existing socket has a single function is overcome, and the applicability is improved; the use cost is reduced, and the aim of energy conservation is fulfilled.

The invention belongs to the technical field of orthopedic rehabilitation, and particularly relates to an orthopedic rehabilitation training walking device with adjustable buoyancy, which comprises a shell, a waist bandage, knee joint bandages and ankle joint bandages, a resistance adjusting device is rotatably mounted in the shell, the front end of the resistance adjusting device is connected with an exoskeleton support, and the ankle joint bandages are connected with the exoskeleton support. A waist bandage is installed on the upper portion of the exoskeleton support, knee joint bandages are installed in the middle of the exoskeleton support, ankle joint bandages are installed on the lower portion of the exoskeleton support, a connecting assembly is installed on the surface of the exoskeleton support, and a buoyancy adjusting device is installed on the side face of the connecting assembly. The carbon fiber exoskeleton is placed in the water tank, the walking resistance of the exoskeleton can be adjusted by adjusting the number of balancing weights, the functionality of the device is improved, meanwhile, the rotation resistance of the hip joint can be adjusted through a resistance adjusting device on the side face of the device, and the practicability of the device is improved. And the adjustability of the rehabilitation training device is improved.

The invention discloses an electrical fire and gas intelligent monitoring and alarming system which comprises an external gas monitoring and controlling unit arranged in a gas concentration monitoringarea and an electrical fire and gas intelligent monitoring and alarming device arranged in a communication range of the external gas monitoring and controlling unit. The external gas monitoring control unit is in wireless communication with the electrical fire and gas intelligent monitoring alarm device through Zigbee. A real-time gas concentration value acquired by the external gas monitoring control unit is transmitted to a display screen of the electrical fire and gas intelligent monitoring alarm device, a voice broadcast function is provided, and a set of effective composite function technical solution is provided for early warning, alarm and control of residential gas fire and residential electrical fire.

The invention belongs to the technical field of kitchen supplies, and particularly relates to a kitchen knife capable of scraping skins. The kitchen knife capable of scraping the skins comprises a knife handle and a knife body. The kitchen knife is characterized in that an arc-shaped groove-shaped bottle opener is arranged at the upper end, close to the knife handle, of the knife body; the side face of the knife body is uniformly provided with a plurality of protrusions made of stainless steel to be served as a skin-scraping device. According to the kitchen knife capable of scraping the skins, the structure is simple, and using is convenient; the defect that a former kitchen knife is simplex in function is solved; not only a wine bottle can be opened, but also the skins can be scraped, and hence convenience is brought to the life of people; the cost is low, and application and popularization are facilitated.

The invention belongs to the technical field of green buildings, and particularly relates to an environment-friendly and energy-saving green building which comprises a wall body, photovoltaic panels, connecting shafts, gear blocks and gears, the photovoltaic panels are installed on the periphery of the wall body, the connecting shafts are fixedly arranged on the surfaces of the photovoltaic panels, the connecting shafts are rotationally connected with the wall body, and the gear blocks are arranged on the connecting shafts. The front half part of the connecting shaft is fixedly provided with a tooth block, the front end of the tooth block is in meshed connection with a gear, the surface of the gear is fixedly provided with a tooth column, the front end of the gear is in meshed connection with a rack, the left side and the right side of the rack are fixedly connected with fixing frames, and the rack is connected with the adjacent rack through the fixing frames; a sliding rod is movably mounted in the middle of the wall body, a scraping plate is fixedly connected to the front end of the sliding rod, and a first spring is fixedly connected to the top of the scraping plate; when the building is used, the photovoltaic panels can be unfolded and stored at the same time, and when the photovoltaic panels are stored, the photovoltaic panels are automatically cleaned, and cleaning liquid is automatically supplemented.