49results about How to "Will not block the line of sight" patented technology

The invention discloses a multi-dimensional theater. The multi-dimensional theater comprises a theater body, a screen, one or more movable stages and one or more pod type auditoriums, wherein the theater body is internally provided with a spherical space, the screen is arranged on the inner wall of the theater body, used for displaying videos, and provided with one or more performance windows, the movable stages are arranged on the theater body and can extend into the spherical space from the performance windows, each comprise a telescopic performance stage body which can extend into the spherical space from the corresponding performance window, and are used for carrying players for live performance, and the pod type auditoriums are arranged in the spherical space of the theater body and can be moved in the spherical space in multiple dimensions. According to the multi-dimensional theater, the players can be carried to conduct live performance while audience watches videos on the screen, the audience can interact with the players and can swing forwards, backwards, leftwards and rightwards, move up and down and rotate, and therefore the content of the spherical videos can be watched at multiple angles, the constraint of plane vision is removed, and the immediacy sense and the reality sense of watching are enhanced.

The invention relates to a tunneling, anchoring and supporting integrated machine, which comprises a tunneling device, and is characterized in that the tunneling device is hinged with a body, wherein the tunneling device is provided with an anchoring and supporting device; the specific structure is that the anchoring and supporting device comprises a frame, a top telescopic supporting device, a bottom telescopic supporting device, a left telescopic component, a right telescopic component and an onboard bolting machine; one end of the left telescopic component and one end of the right telescopic component are fixedly arranged on the frame; the other ends of the left telescopic component and the right telescopic component are hinged with the onboard bolting machine respectively; the onboard bolting machine is positioned and rotated around a hinge point; one end of the top telescopic supporting device and one end of the bottom telescopic supporting device are fixedly connected to the frame; hydraulic guide devices are arranged on the two sides of the tunneling device; and one end of each of the hydraulic guide devices is fixedly connected with the rear part of the tunneling device, and the other end of each of the hydraulic guide devices is hinged with the frame of the anchoring and supporting device.

The invention discloses a navigation method and device based on a mobile terminal and a rearview mirror vehicle traveling recorder. The navigation device includes the rearview mirror vehicle traveling recorder used for communication connection with the mobile terminal having a navigation function; the rearview mirror vehicle traveling recorder is provided with a back-clamping type structure; the rearview mirror vehicle traveling recorder also includes a wireless connection module, an MCU processor, a display screen, a power amplifier and a loudspeaker; the wireless connection module can be connected with the mobile terminal and receive navigation data sent from the mobile terminal; the MCU processor connected with the wireless connection module is used for processing the navigation data received by the wireless connection module, controls the display screen to display navigation and controls the loudspeaker to broadcast navigation after processing; the display screen is connected with the MCU processor; the power amplifier is connected with the wireless connection module; the loudspeaker is connected with the power amplifier. In the process of vehicle traveling, mobile phone navigation is fully utilized, the advantage of smartphone real-time navigation (free) is fully enjoyed, and the problems that the mobile phone is small in navigation sound and small in screen are perfectly solved.

The invention discloses an electric power measurement teaching device, which comprises an electric power measurement device, and further comprises a display panel which is vertically arranged, whereina mounting plate is arranged at the bottom of each electrical element of the electric power measurement device, and the electrical elements are fixed to a same display side of the display panel by virtue of the mounting plates; mounting holes are distributed in the display panel; pin columns are arranged at the upper sides of the mounting plates, and notches, in which the mounting holes can be clamped, are arranged in the pin columns; magnets are embedded in the mounting plates; and the display panel is a metal plate or a magnetic insulating plate. According to the electric power measurementteaching device provided by the invention, teaching can be demonstrated through plane development of the electric power measurement device, and the electric power measurement teaching device is well organized in circuit layout, convenient for students in understanding and practicing and capable of overcoming student learning psychology of feeling deep and afraid of measurement device technology; meanwhile, sight lines of students can be prevented from getting sheltered, and coherent and ordered classroom teaching can be guaranteed, so that teaching efficiency and quality are effectively improved; and in addition, in accordance with structures of different measurement devices, arrangement positions and wiring modes of electrical elements on the measurement devices are variable, and the measurement teaching device is simplified.

The invention relates to the technical field of medical treatment and discloses an infant anti-falling sickbed which comprises a bed body, a bed head frame, a bed tail frame and bedrails. Blocking units for blocking an infant from falling from gaps of the bedrails are arranged below the bedrails, each blocking unit comprises a cylinder mounted on the side face of the bed body, the output end of each cylinder is connected with a protection rod, a foldable protection curtain is arranged on each protection rod, and the bottom of each protection curtain is fixed on the lateral portion of the bed body; the bed body comprises a safety area and warning areas positioned on two sides of the safety area, triggering units for triggering the blocking units are arranged in the warning areas, and protection bag units for catching the infant are arranged at the bottom of the bed body. Through mutual cooperation of the blocking units and the triggering units, the gaps of the bedrails can be blocked, so that probability of the infant in falling from the bed is lowered; when the blocking units still cannot block the infant from falling, the protection bag units can catch the falling infant to avoidfall injury of the infant due to direct falling to the ground, so that safety of the sickbed is improved greatly.

The invention discloses an automobile part welding device with a protection function. The automobile part welding device comprises an upper transverse plate, electric telescopic rods, a lower transverse plate and a protection cover. An adjusting transverse rod is arranged below the upper transverse plate. The left end and the right end of the adjusting transverse rod are movably connected with first fixed vertical plates. A first drive motor is fixedly mounted at the right end of the adjusting transverse rod. The lower transverse plate is located at the bottom ends of the electric telescopic rods. A connecting rod is connected in each second fixed vertical plate in a penetrating manner. Connecting balls are mounted between each connecting rod and a connecting sleeve in an embedded manner.Automobile parts are fixedly arranged in fixed clamps. A third storage battery is fixedly mounted below a second drive motor. According to the automobile part welding device with the protection function, the protection function is achieved, the personal safety of workers is guaranteed, and other faces of the automobile parts can be welded; and alignment of two automobile parts is facilitated, andoperation is quite simple and convenient.

The invention provides an oral cavity support for auxiliary positioning of oral cavity tumor radiotherapy. The oral cavity support comprises a cylindrical support frame and a tongue depressor. The tongue depressor is inserted into the support frame; the support frame comprises an upper supporting piece and a lower supporting piece which are connected in a sliding mode in the height direction, an adjusting screw rod used for adjusting the height of the support frame is arranged between the upper supporting piece and the lower supporting piece, an observation window is arranged at one end of the tongue depressor, a plurality of shielding strips are arranged in the observation window, the shielding strips comprise a fixed shielding strip and a plurality of movable shielding strips, the fixed shielding strip is fixedly connected with the side wall of the observation window, the movable shielding strips are connected with the observation window in a sliding mode, a linkage mechanism is arranged between every two adjacent shielding strips, and the linkage mechanisms drive the shielding strips to partially or completely shield the observation window. According to the oral cavity support for auxiliary positioning of oral cavity tumor radiotherapy, the height of the oral cavity support and the width of the tongue depressor can be conveniently adjusted, meanwhile, the occlusion position is individually designed, and the oral cavity support can be suitable for being used by various patients.

The invention discloses a portable speech content shooting and recording device based on optical zooming. The device comprises an image acquisition device and at least one mobile terminal. Each mobileterminal is in communication connection with the image acquisition device and controls the image acquisition device to acquire video images meeting requirements. The image acquisition device transmits the acquired video image to the mobile terminal for storage. The image acquisition device comprises variable-focus image acquisition equipment, a control system of the image acquisition equipment and a supporting structure for supporting the image acquisition equipment. The image acquisition device is fixedly connected with the control system, the control system is in communication connection with the mobile terminal, and the image acquisition device is movably connected with the supporting structure. According to the device, the problem that a user needs to lift a mobile phone irregularly to take pictures or record videos in a conference in the prior art can be solved, the two hands of the user are liberated, and clear video images can be obtained more effectively.

The invention provides a sewing machine protection cover capable of preventing fingers from being pricked. The protection cover comprises a protection ring and connecting rod fixing pieces, wherein the protection ring is mounted on the connecting rod fixing pieces through a left connecting rod piece and a right connecting rod piece, and the connecting rod fixing pieces and machine head fixing pieces form a whole and can be mounted on the lower side of a sewing machine head. When protection is required, the protection ring can be turned to the lower part, and the periphery of a sewing machine is covered; when the protection ring is required to be moved away, the protection ring is upwards rotated by 90 degrees around connecting rod rotating shafts in the connecting rod fixing pieces. With the adoption of the sewing machine protection cover, the defect that the fingers are pricked due to slow reaction of a photoelectric protection device and circuit failure can be overcome, and the danger that the fingers of the sewing beginner are pricked can be effectively prevented. Besides, the protection cover is made of high-strength transparent plastic and cannot shield the sight of an operator, and industrial accidents of a sewing operator can be effectively prevented.

The invention relates to a cutting-off tool which is provided with an arc-shaped tool body and a tool handle, wherein the tool body and the tool handle are integrated. A bend which is integrated with the tail portion of the tool handle is arranged at the tail portion of the tool handle. The cutting-off tool is characterized in that a first handle and a second handle cover the periphery of the tool handle, the first handle and the second handle are oppositely combined, the inner side face of the first handle and the inner side face of the second handle are oppositely combined, the upper end of the first handle and the upper end of the second handle are in close fit and fixed through a straining ring, the bend is located on the lower side of the lower end of the first handle or the lower side of the lower end of the second handle, a first groove is formed in the inner side face of the first handle, a second groove is formed in the inner side face of the second handle, the tool handle is arranged in the first groove and the second groove, a plurality of first convex ribs are arranged on the outer side face of the first handle, and a plurality of second convex ribs are arranged on the outer side face of the second handle. The cutting-off tool has the advantages of being simple in structure, high in safety, long in service life and the like.

The invention discloses a range hood which comprises a tank body component, a full screen and a drive mechanism; the tank body component is provided with an oil fume inlet; the full screen is used foropening and closing the oil fume inlet; the drive mechanism is installed on the tank body component; the full screen is installed on the drive mechanism; the drive mechanism drives the full screen tolife and overturn relative to the tank body component and comprises a driving rod and a drive device; one end of the driving rod is pivotably installed on the tank body component, and the other end of the driving rod is pivotably installed on the full screen; and the drive device is hinged to the driving rod and drives the driving rod to rotate to drive the full screen to lift and overturn. The range hood according to the embodiment of the invention has the advantages that the range hood is good in consistency of the whole structure, beautiful in appearance and convenient to clean, cannot block a sight line of a user in the use process, cannot hinder the user in space and is good in user experience and the like.

The invention belongs to the field of plant cultivation, and particularly relates to a landscape tree shape cultivation method for a fraxinus chinensis street tree. The method comprises the steps of cultivation of a trunk, cultivation of skeleton branches and cultivation of a crown shape. According to the method, a current annual cultivation method is adopted for the early tree shape cultivation of a fraxinus chinensis sapling, continuous shape cultivation of 4-6 years is conducted, and therefore the fraxinus chinensis tree is full and attractive in crown shape, neat in plant shape and beautiful in posture. By means of the tree shape cultivation method, the reasonable crown structure is kept, all stages of branch structures are distinct in layer, the overall tree potential is balanced andstable, and the stability of the fraxinus chinensis tree in strong storm and rain can be enhanced. By means of the method, dense branches and thin and weak branches are timely removed, the density ofthe branches is consistent, the side branches are evenly distributed, the interior of the crown is ventilated and is pervious to light, the leaves are dark green and luxuriant, and the occurrence of diseases and pests of the fraxinus chinensis tree is reduced.

The invention discloses a windscreen wiper and an automobile using the same. The windscreen wiper comprises a wiping plate, a first wiping rod and a driving device, wherein the wiping plate is clung to the surface of a windscreen, and an initial position of the wiping plate is clung to one upright side surface of the windscreen; the first end of the first wiping rod is connected with the wiping plate; the driving device is used for driving the first wiping rod to rotate; the second end of the first wiping rod is connected with an output shaft of the driving device, and the driving device is close to the bottom side of the windscreen; a bending part of which the shape is the same as that of the side edge of the windscreen is arranged between the first end and the second end of the first wiping rod; the side edge of the windscreen consists of one upright side edge and the bottom side of the windscreen. According to the windscreen wiper, the shape of the wiping rod is changed, so that the sight of a driver cannot be covered when the windscreen wiper is at the initial position, and as a result, the driving safety can be improved.

The invention discloses a stomatology department oral cavity pre-implantation examination device which comprises a headrest base, a supporting frame is fixedly connected to the upper surface of one end of the headrest base, first sliding grooves are symmetrically formed in the upper surface of the supporting frame, tool boxes are movably connected into the first sliding grooves, and a second sliding groove is formed in the upper surface of the other end of the headrest base. A limiting sleeve column is movably connected into the second sliding groove, a mounting plate is movably connected into the limiting sleeve column, and a detection support is arranged on one side of the tool box. According to the oral cavity pre-implantation examination device for the stomatology department, the headrest base is arranged, the head position of a patient is fixed, meanwhile, the headrest base is used for supporting the mounting plate and the tool box, the two hands of medical workers can be liberated, the situation that the oral cavity of the patient is fixed by holding equipment with hands is avoided, the detection stability is improved, and personal errors in the detection process are reduced; the distance between the upper jaw support and the lower jaw support can be locked, occlusion of a patient in the examination process is prevented, and the examination stability is guaranteed.

The invention discloses a method for manufacturing a hat eye brow. The method comprises the following steps: 1) preparing a mold and molding materials; 2) carrying out primary injection molding; and 3) carrying out secondary injection molding. Additionally, the invention also discloses an eye brow comprising an eye brow main body, wherein the eye brow main body is composed of a first component and a second component, wherein the hardness of the first component is less than that of the second component. Because the first component and the second component are respectively manufactured on the injection molding mold by adopting the method provided by the invention, the hardness of the first component and the second component can be set to be different, and further the eye brow composed of the first component and the second component at different parts have different hardnesses.

The invention discloses a range hood. The range hood comprises a box assembly, a full screen, a driving mechanism and a driving assembly, wherein the box assembly is provided with an air inlet; the full screen is used for opening and closing the air inlet; the driving mechanism is mounted on the box assembly, and the full screen is mounted on the driving mechanism; the driving mechanism comprisesa sliding groove assembly and a connecting rod assembly, the sliding groove assembly is arranged on the box assembly and is provided with a first sliding groove and a second sliding groove; the connecting rod assembly is fixed to the full screen and is provided with a first sliding part matched with the first sliding groove and a second sliding part matched with the second sliding grove; the driving device is connected with the connecting rod assembly and is used for driving the connecting rod assembly to enable the first sliding part and the second sliding part to slide in the first sliding groove and the second sliding groove to ascend, descend and turn over the full screen. The range hood provided by the embodiment of the invention has the advantages that the overall structure consistency is good, the appearance is attractive, the sight of a user cannot be blocked in the using process, the user cannot be hindered in space, and user experience is good.

The invention discloses an aircraft engine fan blade cleaning and lubricating system which comprises a blade storage vehicle and cleaning and lubricating equipment arranged on one side of the blade storage vehicle, a storage device is arranged on the upper surface of the blade storage vehicle, and a positioning mechanism is arranged on the lower surface of the blade storage vehicle; according to the invention, through the storage device on the blade storage vehicle, disassembled engine blades can be conveniently conveyed to an explosion-proof workshop and can be automatically cleaned, detected and lubricated after being in butt joint with cleaning and lubricating equipment, positioning guide rails are arranged on the blade storage vehicle, butt joint with a cleaning and lubricating device is facilitated, and the overall height of the storage vehicle is low; sight of an operator will not be and meanwhile, the industrial robot is used for grabbing the blades to an operation area, the automatic cleaning, detecting and lubricating operation procedures can be achieved, the system is higher in automation degree and better in cleaning and lubricating effect, manpower can be effectively liberated, the operation quality and efficiency can be improved, and better guarantee is provided for engine flight safety.

The invention discloses a convenient bus passenger waiting station which comprises a ceiling, a supporting bracket used for supporting the ceiling and a backboard arranged between the ceiling and the supporting bracket, wherein the backboard is provided with advertisement boards and a bus line indication board, and the bus line indication board is arranged between the two advertisement boards. The convenient bus passenger waiting station is characterized in that a goods box is arranged on the backboard, and a voice broadcast device is arranged in the goods box; the voice broadcast device is provided with a power line and a signal line, the power line is connected with a power supply, and the signal line is connected with a controller embedded in the backboard; a box cover is arranged on the goods box, and a buckle is arranged on the box cover; and a side board is also arranged between the backboard and the supporting bracket.

The invention provides a multifunctional welding mask, relates to the field of electric welding, and aims to solve the problems that when an existing welding mask is used, splashing high-temperature welding slag is prone to damaging black glass or transparent glass, meanwhile, a protective lens is usually fixed in an embedded mode and is not prone to being replaced, a mask needs to be taken off when part of welding is completed for inspection, many times of repeated wearing of the mask consumes much time, in addition, dust in a welding workshop is much, protective lenses are prone to being polluted, and the sight of operators is blocked are solved. The mask comprises a protecive mask; and a rotating frame is arranged in the middle of the front end of the protective mask; wherein the rotating frame is of a rectangular frame structure, and mounting clamping plates are arranged on the front side and the rear side in the frame of the rotating frame. The wiping cotton is arranged on the opposite inner sides of the first clamping plate and the second clamping plate, the wiping cotton makes close contact with the tempered glass and the black glass, the tempered glass and the black glass are wiped through the wiping cotton in the moving process, and then cleanliness of the protective lens is effectively guaranteed.

The invention provides a corn harvester three-way conveying device which comprises a front header. A plurality of rice pulling devices are arranged on the front header, a left conveying trough, a middle conveying trough and a right conveying trough are arranged in the rear of the front header and connected with the front header, a left horizontal conveyor and a right horizontal conveyor are arranged on the front header, the left horizontal conveyor is communicated with the left conveying trough, the right horizontal conveyor is communicated with the right conveying trough, and rice inclining devices are arranged at the top end of the left conveying trough, the top end of the middle conveying trough and the top end of the right conveying trough. An original conveying trough arranged on one side is changed into the left conveying trough, the middle conveying trough and the right conveying trough, illusion of inclination of a vehicle generated by a driver in driving due to the conveying trough on one side is avoided, a left view field and a right view field of the driver viewing in the middle are the same in range, sight lines cannot be blocked, and the working efficiency of the three conveying troughs is higher than that of one conveying trough.

The invention discloses a rearview system of an automobile. The system is provided with cameras which are fixed on rearview mirrors on the two sides of the automobile and used for collecting image information of the road condition on the rear side of the automobile, an image information is output by the cameras to display screens in the automobile for displaying, the lower edge of a sunshade plateabove a driver's seat of the automobile is hinged to a support plate, the two sides of the support plate are hinged to the display screens opened toward the two sides respectively, the display screenon the left side of the support plate is used for displaying the image information collected by the camera on the left side of the automobile, and the display screen located on the right side of thesupport plate is used for displaying the image information collected by the camera on the right side of the automobile. The system has the advantages that the structure is simple, the system is convenient to use, the line of sight can not be blocked, and storage is convenient to achieve when the system is not in use.

The invention discloses an intelligent adjusting method, device and equipment for a multifunctional sun shield and a storage medium. The method comprises the steps that illumination intensity data around a vehicle, voice data in the vehicle, gesture data of a driver and position data of the two eyes are collected; comparing the illumination intensity data with a corresponding preset threshold value, and performing analysis in combination with the in-vehicle voice data, the gesture data and the position data to obtain an analysis result; a control signal of the multifunctional sun shield is generated according to the analysis result, the multifunctional sun shield is adjusted according to the control signal, discomfort caused by strong light irradiation to a driver can be eliminated, the sight of the driver cannot be blocked, the driver can observe the road condition, the sun shield is accurately controlled by combining gestures, voice and the positions of the two eyes, and the driving safety is improved. Therefore, the sun shield is more intelligent, a comfortable driving feeling is provided for a driver, the intelligent adjusting speed and efficiency of the multifunctional sun shield are improved, and the user experience is improved.

The invention discloses a windshield wiper assembly of a windshield and a vehicle with the windshield wiper assembly, the windshield wiper assembly comprises a flexible glass layer, and at least part of the flexible glass layer is located on the outer side of the windshield to shield the windshield; the transmission assembly is used for driving the flexible glass layer to move relative to the windshield; and the cleaning piece is arranged at the end part of the windshield and is used for wiping the part, which moves to the end part of the windshield, of the flexible glass layer. Therefore, the flexible glass layer is arranged on the outer side of the windshield to shield the windshield, and then the cleaning piece located at the end of the windshield is used for laterally cleaning the flexible glass layer, so that the situation that the cleaning assembly shields the sight of a driver and passengers can be avoided, and the use experience and the use safety are improved; and the windshield wiper assembly does not have cleaning dead angles, so that a better wiping effect and a better cleaning effect are achieved.

The invention discloses an electronic type automotive rearview mirror. The electronic type automotive rearview mirror comprises a camera unit, an image processing and controlling unit, a power supply unit and an image display unit, wherein the camera unit comprises a plurality of cameras which are respectively mounted on the left side, the right side and the rear side of an automobile; the image processing and controlling unit is used for processing and controlling image information collected by the cameras and transmitting the processed image information to the image display unit to display; the power supply unit is used for supplying the power to other units; the image display unit is used for displaying the processed image information for an automobile driver; the cameras are respectively connected with the image processing and controlling unit; the image processing and controlling unit is respectively connected with the power supply unit and the image display unit; the power supply unit is also respectively connected with the image display unit and the cameras. Through the electronic type automotive rearview mirror, the plurality of cameras are mounted and are used for splicing and fusing the collected images; the image information of more area positions can be obtained; the sight of the driver cannot be shielded.

The invention relates to a machining technology of a large holding clamp on an electro-hydraulic hammer, and belongs to the technical field of machining of large holding clamps on electro-hydraulic hammers. The technology comprises the following steps that (1) a blank is selected, and the blank is placed on a sawing machine to be subjected to rough machining; (2) the blank is placed in a heating furnace to be preheated; (3) the blank is subjected to primary heating, then primary heat preservation is carried out, and then the blank is subjected to upsetting; (4) the blank obtained after upsetting is subjected to secondary heating, then secondary heat preservation is carried out, and then the blank is drawn; (5) the blank obtained after upsetting is subjected to tertiary heating, then tertiary heat preservation is carried out, and then the blank is subjected to bend forging; and (6) the blank is subjected to quartus heating, then quartus heat preservation is carried out, the blank is cooled in the furnace till the temperature ranges from 550 DEG C to 600 DEG C, and then the blank is discharged out of the furnace for air cooling till the room temperature is achieved. The large holding clamp on the electro-hydraulic hammer saves raw materials and is not prone to being broken off, good in product quality and good in holding-on performance.

The invention belongs to the field of plant cultivation, and particularly relates to a landscape tree shape cultivation method for a fraxinus chinensis street tree. The method comprises the steps of cultivation of a trunk, cultivation of skeleton branches and cultivation of a crown shape. According to the method, a current annual cultivation method is adopted for the early tree shape cultivation of a fraxinus chinensis sapling, continuous shape cultivation of 4-6 years is conducted, and therefore the fraxinus chinensis tree is full and attractive in crown shape, neat in plant shape and beautiful in posture. By means of the tree shape cultivation method, the reasonable crown structure is kept, all stages of branch structures are distinct in layer, the overall tree potential is balanced andstable, and the stability of the fraxinus chinensis tree in strong storm and rain can be enhanced. By means of the method, dense branches and thin and weak branches are timely removed, the density ofthe branches is consistent, the side branches are evenly distributed, the interior of the crown is ventilated and is pervious to light, the leaves are dark green and luxuriant, and the occurrence of diseases and pests of the fraxinus chinensis tree is reduced.

The invention relates to a test tube rack for hematology department, in particular to an easy-to-use test tube rack for hematology department. The technical problem of the present invention is to provide an easy-to-use test tube rack for hematology department that is easy to use and can reduce the workload of medical staff. The technical embodiment of the present invention is: an easy-to-use test tube rack for hematology department, including a base, universal wheels, rollers, a large support plate, a large guide plate, a large pallet, a first lifting rod, a second A screw, a second lifting rod, a second screw, an inverted concave plate, etc.; the left end of the bottom of the base is connected with a universal wheel, the right end of the bottom of the base is connected with a roller, and the top of the base is connected with a large support plate. An easy-to-use test tube rack for hematology department provided by the present invention can conveniently clamp and fix the blood collection test tube without blocking the sight of the medical staff, and is convenient for the medical staff to observe the blood in the blood collection test tube. Reduce the workload of medical staff.

The invention discloses a range hood. The range hood comprises a box assembly, a full screen, a driving mechanism and a driving assembly, wherein the box assembly is provided with an air inlet; the full screen is used for opening and closing the air inlet; the driving mechanism is mounted on the box assembly, and the full screen is mounted on the driving mechanism; the driving mechanism comprisesa sliding groove assembly and a connecting rod assembly, the sliding groove assembly is arranged on the box assembly and is provided with a first sliding groove and a second sliding groove; the connecting rod assembly is fixed to the full screen and is provided with a first sliding part matched with the first sliding groove and a second sliding part matched with the second sliding grove; the driving device is connected with the connecting rod assembly and is used for driving the connecting rod assembly to enable the first sliding part and the second sliding part to slide in the first sliding groove and the second sliding groove to ascend, descend and turn over the full screen. The range hood provided by the embodiment of the invention has the advantages that the overall structure consistency is good, the appearance is attractive, the sight of a user cannot be blocked in the using process, the user cannot be hindered in space, and user experience is good.

The invention provides a lower limb orthosis for rehabilitation treatment. The lower limb orthosis comprises n-shaped front supporting legs, side beams and rear supporting legs which are sequentially connected, a fixing beam is connected between the two front supporting legs, sliding rails are arranged at the bottoms of the two side beams in the length direction of the side beams, long-strip-shaped curtain edges capable of being pulled open or folded are slidably connected into the sliding rails, and hemp ropes which are uniformly distributed in the length direction of the curtain edges are arranged between the two curtain edges; when the curtain edges are pulled open, the hemp ropes are spread in the length direction of the curtain edges to form a chair surface with spaced gaps; and when the hemp ropes form the chair surface, a height difference exists between every two adjacent hemp ropes, and when the curtain edges are folded, the hemp ropes are gathered together to form a rope bundle.

The invention provides a multi-functional welder's mask, which relates to the field of electric welding, in order to solve the problem that when the existing welder's mask is in use, the splashed high-temperature welding slag is likely to cause damage to black glass or transparent glass, and the protective lens is usually fixed by embedding. , it is not easy to replace it, and the mask needs to be removed when some welding is completed for inspection, and it will take a lot of time to wear the mask repeatedly. In addition, there is a lot of dust in the welding workshop, and the protective lens is easily polluted, blocking the operator's sight. It includes a protective mask; a turret is provided in the middle of the front end of the protective mask; the turret is a rectangular frame structure, and the front and rear sides of the turret frame are provided with mounting splints. In the present invention, since the first splint and the second splint are equipped with wiping cotton on the opposite inner sides, and the wiping cotton is in close contact with the tempered glass and black glass, the wiping cotton is used to wipe the toughened glass and black glass during movement, thereby effectively ensuring Cleaning of protective lenses.