33results about How to "Easy to open and use" patented technology

The invention discloses a device convenient for pulling out of tissues. The device convenient for pulling out of the tissues comprises the tissues and a packaging bag thereof; a cut mark of an opening which is for the tissues to be pulled out is arranged above the packaging bag; a pull wire is arranged on the packaging bag; one end of the pull wire is arranged at one end of the cut mark of the opening outside the packaging bag; the other end of the pull wire is arranged inside the packaging bag; the pull wire end which is arranged inside the packaging bag passes tissue laminated layers and arrives at the bottom of the tissue laminated layers to be glued with the bottom layer tissue or the bottom inside the packaging bag; the pull wire end which is arranged inside the packaging bag can arrive at an opposite side area of a first layer of tissue to be glued with the inner layer of the packaging bag; the pull wire other portions are arranged inside the packaging bag to be glued with the first layer of tissue; the length of the pull wire section, which is arranged outside the packaging bag, is 2 cm at least. According to the device convenient for pulling out of the tissues, the cut mark on the opening of the packaging bag of the tissues can be conveniently and easily pulled open and meanwhile the tissues on the upper portion are pulled out.

The invention discloses a classification containing box which comprises a box cover, hinges, a hardware containing box, universal wheels and a movable handle, wherein the box cover is arranged on the rear side of the hardware containing box; the box cover is provided with a lock catch and lift handles; the lock catch is arranged at the edge of the middle part of the front surface of the box cover; the lift handle is arranged on the upper surface of the box cover; the two lift handles are symmetrically designed and perpendicular to the box cover, and are seamlessly welded and fixed; the hinges are arranged at contact parts of the box cover and the hardware containing box; the left and right sides of the hinges are respectively welded and fixed on the box cover and the hardware containing box; the hardware containing box is arranged on the universal wheels; and the hardware containing box is perpendicularly and seamlessly welded and fixed with the four universal wheels. The classification containing box disclosed by the invention has the advantages that the structure is simple, hardware parts can be stored in a classification manner, certain hardware parts needing oil soaking can be stored, and a worker can push the classification containing box conveniently.

The invention discloses a transient-state waveform analysis system based on an electronic mutual inductor. The transient-state waveform analysis system based on the electronic mutual inductor comprises an electronic mutual inductor device, a high-precision sampling device and a waveform analysis device, wherein the electronic mutual inductor is connected with the high-precision sampling device via an optical fiber; the high-precision sampling device is connected with the waveform analysis device via an optical fiber; and the electronic mutual inductor device 1 is also connected with a bus alternating-current voltage input module via a line. According to the transient-state waveform analysis system based on the electronic mutual inductor, which is disclosed by the invention, not only the defects that the traditional mutual inductor can not provide higher sampling precision and time response are overcome, but also the data can be stored in a comtrade file format by the waveform analysis device, and the comtrade file format can be checked as postmortem analysis and also can be provided for other mainstream manufacturer analysis systems to serve as a data source.

The invention discloses a positive pressure type air respirator. The positive pressure type air respirator comprises a backboard assembly and an air bottle assembly fixed on the backboard assembly. The air bottle assembly is leaded to a respirator air supply valve through a pressure reducing valve and a face mask air supply hose. An air-guide pipe sliding seat is fixedly installed on the respirator air supply valve. An air-guide pipe is slidably installed on the air-guide pipe sliding seat. The inner end of the air-guide pipe is connected with the outer end of an air supply pull rod. The inner end of the air supply pull rod is movably connected on a locking hook. An air supply pullback spring is installed between the locking hook and an air supply valve body. A locking board is fixedly installed on the air supply valve body. A locking hole is arranged on the locking board. The hook part of the locking hook corresponds to the position of the locking hole. The air supply valve body is hinged to an air supply lever. The other end of the air supply lever opposite to the hinged end is connected on a membrane. The air supply lever contacts with and is connected with the outer end of the air supply pull rod. The positive pressure type air respirator is sensitive in movement, low in respiratory resistance, and good in sealing property, and is suitable for all kinds of positive pressure type air respirator.

The invention relates to a portable ultrasonic steel bar quality detection device. The portable ultrasonic steel bar quality detection device comprises a main body, a fixed bracket, a display screen and a detection box, wherein a feeding box is welded at the left side of the main body; the fixed bracket is mounted on the outer surface of the main body; the fixed bracket and the main body are fastened through nuts; a protection cover is welded at one end of the fixed bracket; an ultrasonic detector is mounted in the protection cover; a baffle plate is mounted at one end, close to the feeding box, of the ultrasonic detector; a detecting head is arranged in the baffle plate in a penetrating manner; the display screen is mounted at the right side of the main body. The portable ultrasonic steelbar quality detection device provided by the invention has the beneficial effects that a foldable plate is arranged, and a pull ring fixed on the foldable plate is pulled to be fixed with a bulge fixed on the detection box, so that the detection box can be simply and conveniently opened to use; the foldable plate is designed so that the foldable plate has a certain sealing effect on an inner wallof the detection box when the detection device is not used.

The invention belongs to the technical field of office supplies, and relates to a pencil lead sharpening box. The pencil lead sharpening box comprises a base, an upper cover and a pencil lead sharpening plate, and is characterized in that a cavity used for storing scraps is formed in the base, and the pencil lead sharpening plate is arranged in the middle of the inner side of the upper cover; and wiping cloth is arranged on the inner side of the upper cover, and arranged above the pencil lead sharpening plate. The pencil lead sharpening box can be used in cooperation with a sharpening-free environment-friendly pencil, an art knife is not needed, the weight is low, and great convenience is brought to a painter. The pencil lead sharpening box is ingenious in concept, simple in structure, easy to produce and manufacture and low in cost, and the problem of potential safety hazards brought by the fact that in the prior art, the pencil is sharpened through a knife is solved.

The invention relates to a dustproof and noise-proof device for a building construction site. The dustproof and noise-proof device comprises a shielding plate and a limiting plate, a rotating shaft isarranged on the top side of the shielding plate, a top plate is installed at the top of the shielding plate through the rotating shaft, a built-in plate is inserted into the top plate, storage cavities are formed in the front side and the rear side of the shielding plate, and air springs are hinged into the storage cavities. The top ends of the air springs are connected to the built-in plate, a storage groove is formed in the inner surface of the shielding plate, so that the top plate is stored in the storage groove after rotating downwards, an inserting groove is formed in the bottom of thestorage groove, a front mark seat and a rear mark seat are further arranged at the bottom of the inner side of the shielding plate, position reference can be conveniently formed when a construction pavement is punched, and the functionality is improved; and the two mark seats can further used for recycling pull cloth, foot nails can be lifted upwards when the two mark seats rotate inwards, the used tool can be limited on the inner side of the shielding plate through the lifted foot nails at the moment, and therefore the functional structure is expanded.

The invention discloses a liquid subpackaging device for clinical examination, which comprises a main body, a test tube and a filter screen. A hand wheel is arranged above the main body, and the right side of the hand wheel is connected with a first gear. An indented column is arranged below the right side of the gear, and the gear is tightly attached to the indented column. A rubber plate is fixed below the indented column, and the indented column and the rubber plate are bonded by glue. The test tube is installed in the main body, and soft plates are arranged on the left side and the right side of the test tube correspondingly. Springs are connected to the right sides of the soft plates, and the soft plates and the springs are connected by welding. A fixing plate is arranged below the springs, and the fixing plate and the main body are connected by welding. Scales are arranged on the outer surfaces of the soft plates. The filter screen is mounted below the test tube. The liquid subpackaging device for clinical examination is provided with the scales, so that a doctor can make a certain judgment by watching the scales when taking liquid in the test tube, and the doctor can take the liquid more accurately.

The invention belongs to the technical field of a safe box, and in particular relates to a single-door double-cabinet safe box. The single-door double-cabinet safe box comprises a cabinet door, a lock control unit, cabinet shells and an articulated mechanism. Compared with a traditional two-cabinet two-door safe box with the same size, the use space inside the safe box is larger. Moreover, an isolating plate and a baffle plate designed in the safe box designed by the invention can be disassembled, so the safe box can be used as double cabinets and can also be used as a single cabinet. Meanwhile, the cabinet door of the safe box designed by the invention can be opened left and right. When the cabinet door is opened from the right side, things stored on the right side in the safe box can be taken out. When the cabinet door is opened from the left side, things stored on the left side in the safe can be taken out. When the things on one side are taken out, the things on the other side are sheltered by the isolating plate and the baffle plate so as to not be leaked. Meanwhile, the safe box designed by the invention has only one cabinet door, so parts required during mounting are fewer in the mounting process compared with the traditional two-cabinet two-door safe box, so the cost is saved.

The invention discloses a vegetable oil filtering and separating device. The device comprises a main body, a vegetable oil collecting pipe and a supporting block, wherein a rotating motor is arranged above the main body, the right side of the rotating motor is connected with a first gear, a rack column is arranged below the right side of the gear, the gear is tightly attached to the rack column; a vegetable oil filtering plate is fixed to the lower portion of the rack column, the rack column and the vegetable oil filtering plate are bonded through glue, the vegetable oil collecting pipe is installed in the main body, supporting plates are arranged on the left side and the right side of the vegetable oil collecting pipe correspondingly, springs are connected to the right sides of the supporting plates, and the supporting plates and the springs are connected in a welded mode; fixed plates are arranged below the springs and are connected to the main body in a welded mode, a scale strip is arranged on the outer surface of each supporting plate, and the supporting block is installed below the vegetable oil collecting pipe. The vegetable oil filtering and separating device is provided with the scale strip.

The invention discloses a deformable high-power lamp which comprises a lamp main body, a support assembly and an assembly, the lamp main body comprises a light source plate, a heat dissipation lamp body and a power box, the assembly is detachably connected with the lamp main body and arranged outside the lamp main body, the support assembly is detachably connected with the lamp main body, the support assembly can rotate around the joint of the support assembly and the lamp main body, and a glare cover is arranged on the lamp main body. According to the deformable high-power lamp, the shared main body is adopted, and various shapes are changed in a splicing manner, so that the mold investment in the early stage and the material preparation cost in the later stage are saved, and a user can finish assembly and replacement only by purchasing a single accessory; the glare cover is additionally arranged, on one hand, the light reflectivity is increased, light loss is reduced, on the other hand, stimulation of light to human eyes is reduced, and an adjustable irradiation area can be increased; a stepless speed regulation disc is adopted by the deformable high-power lamp, so that the illumination angle of the deformable high-power lamp can be finely adjusted; the support assembly can be replaced for use and is compatible with tubular installation, and the support pipe diameter is 60-86mm.

The invention discloses a blade detector of a adjustable-pitch propeller. The blade detector of the adjustable-pitch propeller comprises a main body, a hydraulic cylinder and a detecting mechanism, clamping blocks are respectively welded to the outer walls of the left side and the right side of the main body, one ends of the clamping blocks are connected with connecting rods, movable cylinders aremounted at one ends of the connecting rods, the connecting rods and the movable cylinders are tightly fastened through nuts, plugs are connected to the upper parts of the movable cylinders, the hydraulic cylinder is mounted on the inner wall of the bottom of the main body, hydraulic rods are arranged on the hydraulic cylinder, and a pushing plate is fixed to the upper part of the hydraulic rods.The blade detector of the adjustable-pitch propeller is provided with a first movable gear, the first movable gear is driven to drive rotating blades on a second movable gear to rotate by rotating a hand wheel, meanwhile the rotating blades are movably connected with a round groove through a movable wheel, thus the angle formed by the rotating blades and a rotary shaft can be simply and conveniently changed according to the requirements of people, detection of the detecting mechanism is further more accurate, and usage is more convenient.

The invention relates to the technical field of road administration construction, in particular to an environment-friendly integrated vehicle with powder spreading and mixing functions, which comprises a spreading vehicle, a feeding mechanism, a spreading mechanism, a protection mechanism and a competition mechanism, and the feeding mechanism, the spreading mechanism and the competition mechanism are mounted on the spreading vehicle. A water spraying mechanism is mounted on the material scattering vehicle, and an adjusting mechanism is connected to the water spraying mechanism; under the action of the feeding mechanism and the material scattering mechanism, materials can be conveniently placed into the material scattering vehicle to be stored, automatic closing protection is achieved, meanwhile, the materials can be conveniently guided out to be scattered, under the action of the protection mechanism, material guiding of the material scattering mechanism is facilitated, blockage caused when the materials are scattered is prevented, and the service life of the material scattering vehicle is prolonged. And meanwhile, under the action of a locking mechanism, the protection mechanism is conveniently stored, under the action of a water spraying mechanism, water spraying and dust removal can be conveniently conducted on the road surface, the water spraying direction can be conveniently adjusted and controlled, and operation is more convenient.

The invention relates to a liquid glue special bottle, which is formed by a bottle body, an outer cover, an inner cover with plating brush plate, and a pin piston of inner cover. The invention is characterized in that: all components are shaped via blow molding or injection molding with non-polar non-cohesive material; the center of inner cover with plating brush plate has a glue outlet through hole while a hole with the same size of through hole is mounted on the plating brush plate at the extension direction of said through hole; the upper head of pin piston of inner cover is the ball pin piston handle with groove and the lower end is the cone plug-stick with prong and the outer diameter is matched with glue outlet through hole; when fixing the outer cover, the pin piston of inner cover is in the position to seal the glue of bottle and the inner surface of the top of outer cover presses the handle. When using, user can open the outer cover, draws out the pin piston of inner cover, convert the bottle, the plating brush plate of inner cover can be used to plate and glue uniformly with high quality, and after the gluing, user only need to insert the pin piston of inner cover into glue outlet through hole and fixing the outer cover.

The invention discloses a flexible net rack for subtitle-patterned fireworks. The flexible net rack comprises soft fireproof net distributed in a quadrangular frame, the frame consists of a telescopic rods, and locking devices are arranged among a plurality of telescopic sections forming the telescopic rods; each telescopic rod is axially provided with a sliding groove, one end of each of multiple frame net connecting pieces can axially move along the sliding groove so as to be arranged in the sliding groove, and the other end of each frame net connecting piece is connected with the circumference of the fireproof net. By utilizing the technical solution above, the assemble of the subtitle-patterned fireworks is carried out when the telescopic rods are extended, assembled effect pieces arefolded and clustered, each telescopic section of the telescopic rods in a transverse direction and a vertical direction is retracted into a maximum telescopic section, and then the package can be carried out. The volume of the packaged subtitle-patterned fireworks is largely reduced compared with the volume of the subtitle-patterned fireworks packaged by the prior art, and the package transportation cost is effectively reduced.

The invention belongs to the technical field of integrated display devices, and particularly relates to a data extraction integrated display device convenient to maintain, which comprises a main body, a bracket and a keyboard; a first rotating shaft is arranged at the top of the main body, a fixing groove penetrates through the outer side of the first rotating shaft, a sliding rod is arranged in the fixing groove, and a sliding block penetrates through the outer side of the sliding rod; a connecting piece is arranged on the side of the fixing groove, the fixing groove is fixedly connected with the connecting piece, the bracket penetrates through the interior of the connecting piece, a movable strip is connected to the end of the bracket, the bracket is movably connected with the movable strip, a sliding strip is arranged at the bottom of the movable strip, and a buckle is connected to the bottom of the sliding strip. According to the data extraction integrated display device based on the database, the display screen and the keyboard are arranged and can be conveniently unfolded and stored, the occupied space is reduced, meanwhile, the display screen and the keyboard can be better protected, the access door on the side of the device can be rapidly disassembled and assembled, and inspection and maintenance of the interior of the device are facilitated.

The invention relates to the technical field of cups, and discloses a cup cover and a cup thereof. The cup cover comprises a main cover body and a cover side wall surrounding the main cover body along the periphery of the main cover body, the main cover body is in an inverted cylinder shape and comprises a top face and a side wall part, a drinking hole and a direct drinking hole which are connected are formed in the top face, a first sealing part covers the drinking hole, the direct drinking hole is covered with a second sealing part, and a parting line is arranged between the first sealing part and the second sealing part; the side wall part of the main cover body abuts against the inner wall of the cover side wall, and the bottom of the cover side wall is folded inwards to wrap the side wall part of the main cover body; and a locking convex ring which protrudes inwards is arranged on the inner wall of the side wall part of the main cover body. Before the cup cover is used, food in the cup can be prevented from leaking or being polluted, and the cup cover is convenient to open for eating during use; a user can drink water through the drinking hole or directly drink water through the direct drinking hole by using a straw, the structure is simple, and the use is convenient.

The invention relates to a glasses leather sheath convenient to take. The glasses leather sheath is characterized by consisting of two opposite rectangular surfaces, namely a first surface and a second surface, wherein three corresponding sides of the first surface and the second surface are oppositely sewn, the first surface and the second surface are respectively formed by compounding an inner layer and an outer layer, a rectangular spring leaf is respectively arranged between the inner layers and the outer layers of sides of the first surface and the second surface which are not sewn, and the length of the rectangular spring leaf is slightly less than the width of the first surface and the second surface. According to the glasses leather sheath provided by the invention, a shape and a material of a conventional glasses packing box are changed, light outer-layer leather and an inner-layer EVA (Ethylene-Vinyl Acetate) material are adopted and compounded, the inner-layer material can be used for well protecting lenses, the outer-layer leather can be used for well showing the grade through cortex, and the glasses leather sheath is closed in the form of the spring leaf and can be opened by gently pressing two ends of the rectangular spring leaf, so that the glasses leather sheath is convenient to open and use.

The invention discloses a variable-frequency heating system for an electric heating plate. The variable-frequency heating system corresponds to the electric heating plate and comprises a controller and a variable-frequency heating device, wherein the variable-frequency heating device is connected with the controller; the controller comprises a control box body; a circuit board is arranged in the control box body and is provided with a power module, a single chip microcomputer, a rectifier, a filter, an inverter, a load circuit and a display module; the power module is connected with an external power supply and is connected with the single chip microcomputer and the rectifier; the single chip microcomputer is connected with the display module; the rectifier is connected with the filter; the filter is connected with the inverter; the inverter is connected with the load circuit; the load circuit is connected with the variable-frequency heating device; and the control box body is provided with a display screen. The variable-frequency heating system is reasonable in design; the performance of the power supply is improved; the heating cost is reduced; the heating volume is reduced; local heating can be finished; and the heating capacity and the heating temperature can be accurately controlled according to the demand quantity, so that waste of energy is reduced; the cost is reduced; and the electro-thermal conversion energy efficiency ratio is greatly improved.

The invention discloses a dual-purpose box type ultraviolet disinfection replaceable handle device which comprises a main body, a box body is installed in the middle of the main body, a disinfection mechanism is installed in the middle of the box body, an ultraviolet disinfection lamp is installed opposite to the disinfection mechanism, and a replacement mechanism is installed at the bottom of theultraviolet disinfection lamp. Hinges are installed on the inner wall of the top end of the box body, and a door body is installed on the inner walls of the hinges. The dual-purpose box type ultraviolet disinfection replaceable handle device is provided with the disinfection mechanism, and the water storage tank contains disinfectant fluid, so that when a user uses the handle or replaces the handle, a disinfection nozzle can automatically spray the disinfectant fluid to the upper end of the handle, the appearance is the same as that of a common handle, and when the handle is replaced, voice prompt and vibration induction can be achieved; a rotary electric machine rotates in a timed mode, the handle is fully disinfected and replaced, a disinfectant is mainly alcohol and other high-volatility substances, continuous normal operation of the rotary motor is guaranteed, and the angle of the rotary shaft can be opened to the maximum degree in a night mode to disinfect the whole vehicle.

The invention discloses a transient-state waveform analysis system based on an electronic mutual inductor. The transient-state waveform analysis system based on the electronic mutual inductor comprises an electronic mutual inductor device, a high-precision sampling device and a waveform analysis device, wherein the electronic mutual inductor is connected with the high-precision sampling device via an optical fiber; the high-precision sampling device is connected with the waveform analysis device via an optical fiber; and the electronic mutual inductor device 1 is also connected with a bus alternating-current voltage input module via a line. According to the transient-state waveform analysis system based on the electronic mutual inductor, which is disclosed by the invention, not only the defects that the traditional mutual inductor can not provide higher sampling precision and time response are overcome, but also the data can be stored in a comtrade file format by the waveform analysis device, and the comtrade file format can be checked as postmortem analysis and also can be provided for other mainstream manufacturer analysis systems to serve as a data source.

The present invention discloses an outdoor meter protection device, and relates to the field of meters, in order to solve the problems that in the prior art, the service life of the instruments and meters is shortened due to that the instruments and meters installed in an open environment are affected by the factors such as external rainfall, snowfall, sun exposure and the like. Transparent glassplates are arranged on both sides of a device casing; a tailgate is arranged on the rear end surface of the device casing; second screws are arranged on both sides of the tailgate; the front end surface of the tailgate is provided with a heat dissipating fan; the front end surface of the heat dissipating fan is provided with a heat dissipating hole; the upper end of the device casing is provided with a cover plate; water plates are arranged at front and rear ends of the cover plate; both the front end surface and the rear end surface of the cover plate are provided with slopes; the outer surface of the water plate is provided with a groove; the front end surface of the device casing is provided with a tempered glass plate; the lower part inside the device casing is provided with a silica gel sheet; and the inside of the silica gel sheet is provided with a meter holder.

The invention provides a side wing opening tarpaulin type air suspension semitrailer, relates to the technical field of semitrailer machinery, and aims to solve the problems that a side box plate is difficult to open, the use is very inconvenient, and the tarpaulin needs to be detached because most of the tarpaulin of the existing semitrailer is of a traction structure. The side wing opening tarpaulin type air suspension semitrailer comprises a semitrailer body; side wing plates are fixedly mounted at the edges of the left end and the right end of the top plate body of the semitrailer body in a vertically upward manner; detachable structures are arranged between the side wing plates and the semitrailer body; the tarpaulin is of an inverted-U-shaped structure and is longitudinally installed between the upper ends of the left side wing plate and the right side wing plate in a sliding mode. As the third roll shaft is transversely and rotationally mounted in the middle of the front end of the clamping plate, the height of the third roll shaft tends to the middle of the first roll shaft and the fourth roll shaft, and the extension frame can be slidably clamped to the telescopic base frame through the clamping plate, front-back stretching and retracting are facilitated, tarpaulin can be conveniently stored and folded, and the movable box plate can be conveniently opened for use; meanwhile, the extension frame can be prevented from being broken when not in use.

The invention discloses a constant-temperature sterile storage device for biological medicine. The constant-temperature sterile storage device comprises an outer box body, wherein hollow rods are vertically and fixedly connected to the centers of the two sides of the outer box body; a cross rod is arranged at the upper ends of the hollow rods; a sliding rod is vertically and fixedly connected to the lower end of the cross rod; the sliding rod extends into the hollow rods; a spring is connected between the lower end of the sliding rod and the bottom end of the interior of each hollow rod; rotating shafts are fixedly connected to the two sides of the front end of the outer box body; an inner box body is arranged at the center of the interior of the outer box body; and a plurality of connecting blocks are uniformly and fixedly connected between the outer side of the inner box body and the inner side of the outer box body. According to the constant-temperature sterile storage device, an ultraviolet lamp is used for disinfecting and sterilizing internal medicines, so that the internal sterile environment is guaranteed; the medicines can be disinfected by the ultraviolet lamp after beingused each time, so that the sterilization effect is guaranteed; meanwhile, the cross rod is arranged, so that a soft cushion at the center of the cross rod can be held for moving and carrying duringcarrying, and a user can conveniently use the device; and a lock-free clamping block fixing method is adopted, so that the device can be conveniently opened and used.

A novel self-rescue belt relates to the technical field of escape devices. The novel self-rescue belt comprises a belt head, a belt loop, a belt outer layer and a belt inner layer arranged inside the belt outer layer; a connecting cloth is stitched to the middle portion of one end of the belt outer layer and connected with the belt head through the belt hoop; the belt inner layer and the belt outer layer are connected together through inner connecting fasteners and outer connecting fasteners; both ends of the belt inner layer are provided with steel wire fixing hooks, steel wires are wound on the steel wire fixing hooks, and the belt inner layer plays a role of storing and protecting the steel wires; the belt hoop and one end of the steel wires are used for being fixed onto a fixed object, and the belt outer layer is used for supporting the self weight of a user during a descending process. The novel self-rescue belt is light in weight, convenient to carry, high in safety performance and applicable to a wide user range; can be opened and used conveniently in disasters such fire; is low in cost, high in application value and wide in market prospect.

The invention provides a convenient-to-maintain building model indoor natural ventilation testing device. The device comprises a test model, a transverse base plate, a transverse top plate, a side edge fixing frame, a storage battery, a photovoltaic controller, adjustable ventilation frame structures, adjustable air guide frame structures, an adjustable wind speed detection frame structure, a control board, a power source switch, a display screen, a control chip, a detachable fixed cover structure and a triangular protective cover; the transverse base plate bolt is installed at the lower partof the test model; and the transverse top plate is bolted to the upper part of the test model. According to the convenient-to-maintain building model indoor natural ventilation testing device, mounting bolts, fixing nuts, an air incoming frame and an air guide frame are adopted, the air incoming frame or the air guide frame can be tightened conveniently when the air incoming frame or the air guideframe is used; the mounting bolts can be unscrewed when the air incoming frame or the air guide frame is not used, so that the air incoming frame or the air guide frame can be conveniently maintained; and a reinforcing frame is adopted, so that the reinforcing effect of a solar photovoltaic panel can be improved when the solar photovoltaic panel is used.