284results about How to "Retractable" patented technology

The invention discloses a cable taking-up and paying-off device for a wire control robot. The cable taking-up and paying-off device for the wire control robot comprises a synchronous belt transmission mechanism, a cable winding mechanism, a cable arranging mechanism and a cable taking-up and paying-off motor. The synchronous belt transmission mechanism comprises a main driving synchronous belt wheel, a winding drum driving synchronous belt wheel, a lead screw driving synchronous belt wheel, a winding drum driving synchronous belt and a lead screw driving synchronous belt. The cable winding mechanism comprises a winding drum, a first winding drum support, a second winding drum support, a first winding drum bearing, a winding drum driving shaft, a winding drum driving wheel, a second winding drum bearing, a winding drum supporting shaft and a winding drum follower wheel. The cable arranging mechanism comprises a bidirectional lead screw, a first lead screw support, a second lead screw support, a first lead screw bearing, a second lead screw bearing, a lead screw sliding block, an unthreaded shaft and a cable guiding block. The invention further discloses a cable taking-up and paying-off method of the cable taking-up and paying-off device for the wire control robot. According to the cable taking-up and paying-off device and cable taking-up and paying-off method for the wire control robot, a cable can be taken up and paid off in order, the tightness is proper, the stability and effectiveness are good, the probability of intertwining and breaking of the cable is lowered, the practicability is high, and using and popularization are convenient.

The invention discloses a wire-control coalmine rescue detection robot and a cable extension and retraction method thereof. The wire-control coalmine rescue detection robot comprises a robot body and a cable extension and retraction box arranged at the top of the robot body. A cable extension and retraction device is arranged in the cable extension and retraction box. The robot body comprise a robot body cabinet, two travelling track assemblies and four swinging arm track assemblies. The robot body cabinet comprises a lower cabinet cavity, an upper cabinet cavity, a sensor cavity, three gear cavities and two supporting wheel cavities. The cable extension and retraction device comprises a cable extension and retraction motor, a synchronous belt transmission mechanism connected with an output shaft of the cable extension and retraction motor, and a cable winding mechanism and a cable arranging mechanism which are both connected with the synchronous belt transmission mechanism. The cable extension and retraction method of the wire-control coalmine rescue detection robot comprises the steps of cable connection and cable extension and retraction. By adoption of the wire-control coalmine rescue detection robot and the cable extension and retraction method thereof, cables are extended and retracted in order and are appropriate in degree of tightness, cable entanglement and breaking are reduced, and stable transmission of control signals, relevant sensor information and a power supply can be guaranteed.

The invention relates to the electric receiving device of the electric vehicle. The current receiver for current in and return comprises the electric boots and the spring device, with two parallel parallelogram four linking bar structure and a separation structure, each four link structure made by the top and down lining bars hinged to the corresponding side plate and isolation plate, the separation structure composed of the air cylinder, air cylinder linking pole hinged to the cylinder piston end, lower linking brake bar with two rocker arms with the lower linking brake bar hinged to the lower linking bar pin shaft fixed to two side walls, one of the rocker arm hinged to the air cylinder linking bar, the other being the stop leaning against the low linking bar, each isolation plate bottom installed with an electric receiving boot, each four link bar structure having its top link bar connected to the said spring device. It solves the technical issues of current receiver contact or separation with the electric supply track smoothly, and the grounding issue of it.

The invention discloses a propeller folding device for an unmanned aerial vehicle. The propeller folding device comprises a base board, three or more vehicle arms, a center ring and a steering engine assembly; the vehicle arms are sequentially arranged on the base board in the circumferential direction, one ends of the vehicle arms are hinged to the base board through shafts and can rotate around the hinge points, and the other ends of the vehicle arms are used for intalling propeller assemblies of the unmanned aerial vehicle; the center ring is located in the middle of the base board, a connecting rod is arranged between each engine arm and the center ring, and the steering engine assembly is used for driving the center ring to rotate to push the vehicle arms to rotate to be unfolded or folded through the connecting rods. The propeller folding device has the advantages of being simpler in structure, easier and more convenient to operate, capable of greatly improving the portability and the like.

The invention relates to a clean face recognition device with a camera protection function. The device comprises a main body, a camera, a protection mechanism and a cleaning mechanism. The protectionmechanism comprises a first drive component, a support block, a sleeve, a cover plate, a first torsion spring, a locking component, a slot, a drive block, a first spring and a push rod. The cleaning mechanism comprises a second drive component, a telescopic rod, a fourth transmission rod, a moving block, a second motor and a cleaning brush. According to the clean face recognition device with a camera protection function, the camera can be retracted through the protection mechanism, so that the camera is protected; the damage probability of the camera is reduced; the practicality of the face recognition device is improved; the camera can be cleaned through the cleaning mechanism; the camera can be kept clean; the shooting sharpness of the camera is improved; and the practicality of the facerecognition device is further improved.

The invention relates to a new energy car charging pile with a waterproof function. The new energy car charging pile with the waterproof function comprises a body, an operating panel, a charging cable, a charging head, a bracket and a base, and further comprises a winding mechanism and a waterproof mechanism. The winding mechanism includes a driving assembly, a rotating shaft, a winding disk, a third gear, a second gear, a screw rod, a moving block, a guide ring and a sliding rod. The waterproof mechanism includes a lifting ring, a waterproof film and at least two power assemblies. Each powerassembly comprise a guide rod, a driving unit, two springs, two first transmission rods, two second transmission rods and two sliding blocks. According to the new energy car charging pile with the waterproof function, the winding and unwinding of a charging cable are realized through the winding mechanism, the protective effect of the charging cable is improved, and the service time of the charging cable is prolonged; and through the waterproof mechanism, the winding and unwinding of the waterproof film are realized, the probability of water entering the charging pile is reduced through the waterproof film, and the practicability of the charging pile is improved.

The invention discloses a tubular motor which can separate the brake by non-electromagnetic force, comprising a mounting plate fixed on the wall, a engine base, a housing while a actuating motor, reduction apparatus, output shaft and a brake apparatus are mounted inside the housing. Wherein, the brake apparatus comprises a electromagnet, a spring mounted on the electromagnet, a brake block connected to the spring and a brake wheel relative to the brake block; one end of actuating motor meshes the brake wheel while another end meshes the output shaft via reduction apparatus; one end of draught device which is mounted on the brake apparatus is connected to the brake block while another end outward the housing of tubular motor. Said invention adds a draught device on the brake apparatus of tubular motor, which solves the problem of close door curtain when the power is out. The advantages of invention comprise simple structure, easy operation, long service life, and wide application without increased cost.

The invention discloses an intelligent following control system and an intelligent following control method for a cable of a chain-driving coal cutter. The system comprises a following control terminal which is used for communicating with a coal cutter control mainframe, used for controlling the running of the coal cutter and controlling a cable drawing device of the coal cutter to run. The method comprises the following steps: (1) initializing the following control terminal; (2) controlling the tensioning and collecting the signals of a chain and a cable clamp; (3) starting and running a following control system; (4) judging if a running feedback signal of the coal cutter exists between the coal cutter control mainframe and a following control mainframe; (5) judging if a rotating direction of a motor is anticlockwise when the running feedback signal of the coal cutter exists; (6) judging if the change in tensioning force of the chain is decreasing when no running feedback signal of the coal cutter exists; and (7) alarming for fault and halting the following control system. According to the invention, the following state of the coal cutter and the cable drawing device of the coal cutter can be monitored in real time, the cable of the coal cutter can be protected and dragged in time and the secondary bending of the cable is avoided in a coal mining process of the coal cutter.

The invention discloses a shuttle vehicle power supply device, and belongs to the field of shuttle vehicles. The device comprises a support and a winding conductive mechanism, wherein the two heads ofthe winding conductive mechanism are fixed on the support, the device further comprises a motor, the motor is fixed at one end of the support, and an output shaft of the motor is connected with the winding conductive mechanism; a screw rod is fixedly arranged on the support away from one end of the motor and in threaded connection with a wire winding and guiding mechanism; the device further comprises a sensing device and an encoder, the encoder is connected with the motor, a wire on the wire winding and guiding mechanism penetrates through the sensing device and extends outward, and the sensing device, the encoder and the motor are all in signal connection with a control system of a vehicle-mounted terminal of a shuttle vehicle. The shuttle vehicle power supply device has the advantagesthat when power is supplied to the shuttle vehicle, the wire cannot wind and lap, through the improvement of a device structure, the wire can be neatly coiled on a reel during winding and unwinding, through the measurement of the deploying and retracting length and tightening degree of the wire, the rolling precision of the reel is higher, and lapping of the wire is further avoided.

A large cable paying-off, taking-up and testing device comprises a left support and a right support. The left support and the right support are connected with a main shaft in a rotating mode, the main shaft is provided with a roller, a left baffle and a right baffle are arranged at the two ends of the roller, a storage battery, a motor and a gearbox are arranged on the left of the left support, the motor is in transmission connection with one end of the main shaft through the gearbox, the main shaft is coaxially provided with a connecting cylinder located between the left support and a bracket of the left baffle, the connecting cylinder is sleeved with an insulation sleeve, four annular grooves are formed in the outer surface of the periphery of the insulation sleeve in the circumferential direction, four copper rings are arranged in the four annular grooves respectively, two opposite sides of each copper ring are provided with a first conductive contact and a second conductive contact respectively, the four first conductive contacts are each connected with a copper bar, a wiring board is arranged at the outer ends of the four copper bars, and the left baffle is provided with a cable outlet. The large cable paying-off, taking-up and testing device can be used for achieving automatic fixing and automatic taking-up and paying-off and can also be used for conducting an insulation resistance test, a leakage current test, a direct-current withstand test, a dielectric loss factor test and an alternating current withstand test on cables.

The invention discloses a submarine cable laying device suitable for an underwater remote control operation robot. The device is carried at the bottom of an underwater ROV, and accurate cable routingcontrol and recording can be realized by utilizing track control and recording functions of the ROV; the number of turns of rotation is fed back through a tensioning pulley servo motor, the laying length of the cable is accurately measured, calculated and recorded, the tensioning state of the released cable is kept through the servo motor torque for the tensioning pulley driving, and releasing andrecycling of the cable are achieved through cooperation of a cable arranging mechanism and the tensioning pulley. Attitude adjustment is carried out by combining attitude control of the ROV and an electric propulsion system of the cable laying device, and accurate plugging and unplugging of the submarine cable can be realized. The submarine cable laying device is mainly used for plugging connection and laying operation of photoelectric composite cables between main and secondary junction box nodes and between the junction box and a scientific instrument of a submarine scientific observation network, and can also be used for connection and laying of submarine cables and wires used by underwater production equipment and underwater factories.

The invention relates to a foldable expandable umbrella antenna structure framework and an expansion method. The structure framework comprises a foundation, a first level rod, a rotation shaft, a second level rod, a torsion spring, a clamping member, a spring, a rope, a connection rod, a nut and a screw, wherein the foundation is circumferentially connected with the bottom end of the first level rod through the rotation shaft, the top end of the first level rod is in hinge connection with the bottom end of the second level rod through the torsion spring, the clamping member, the spring, the rope and the rotation shaft form the clamping structure, the second level rod is folded and is bent, the top end is clamped in the clamping structure, the lower portion of the first level rod is circumferentially connected with the nut through the connection rod, the nut is mounted on the screw to form a screw nut structure, the nut is driven by the screw to move upwards, the structure framework is folded; the nut is driven by the screw to move downwards, the structure frame is expanded, the rotation shaft rotates to a certain angle, the rope is pulled to open the clamping structure to release constraint, and the second level rod is driven by the torsion spring to open; the structure framework is expanded. The umbrella antenna structure framework has advantages of small folding dimension, large expansion dimension, repeatable folding and expansion, small and light structure and high reliability.

The invention relates to the technical field of distribution and collection of underground pipelines, in particular to a pipeline taking-up / taking-off device, which includes a rack, a base, traction machines, a gooseneck wheel and a bracket, wherein the base is arranged on the rack and the traction machines are arranged at the lower part of the base. The pipeline taking-up / taking-off device is characterized in that a round hole is formed in the base; a rotary support sleeve is arranged in the round hole; a rotating shaft sleeve is arranged on the support sleeve; the gooseneck wheel is fixedly connected onto the rotating shaft sleeve; a trapezoid-shaped slots is arranged on the periphery of the gooseneck wheel; an end head of the trapezoid-shaped slot is positioned on the inner bore of the rotating shaft sleeve; axial rollers are arranged in the trapezoid-shaped slot; the bracket is arranged below the gooseneck wheel; one end of the bracket is connected with the lower part of the gooseneck wheel; the other end of the bracket is connected with the rotary support sleeve; the gooseneck is horizontally swings left and right on the base along with the rotating shaft sleeve; and the included angle between the left rotating line / the right rotating line and the transverse direction is 45 DEG respectively. The pipeline taking-up / taking-off device is reasonable in design and simple in structure, has the advantages of safety, reliability, convenience for operation, convenience for installation and use and capability of improving pipeline transmission efficiency, and can be widely applied to construction of pipelines, cables, optical fiber cables of an oil well, a gas well and a water well.

The invention discloses a single-layer full-automatic folding recreational vehicle. The single-layer full-automatic folding recreational vehicle comprises a towing vehicle and a folding carriage, wherein the towing vehicle is provided with a frame; the folding carriage comprises a foldable bottom plate, a front plate, a rear plate, wing plates, a left side plate, a right side plate, a top plate, a left top plate and a right top plate, wherein the wing plates are positioned on the left and right sides of both the front plate and the rear plate; the left top plate and the right top plate are positioned on the left and right sides of the top plate; the internal sides of both the left top plate and the right top plate are hinged with the top plate, respectively; the external sides of both the left top plate and the right top plate are connected with the top ends of both the left side plate and the right side plate in a sliding and push-pull way; the bottom ends of both the left side plate and the right side plate are hinged with the external side of the bottom plate, respectively; and the internal side of the bottom plate is hinged with the frame. The single-layer full-automatic folding recreational vehicle further comprises an automatic unfolding mechanism used for driving the bottom plate, the left side plate, the right side plate, the left top plate and the right top plate to expand so as to form the carriage inside; sliding and push-pull devices are arranged between the left side plate and the right top plate and between the right side plate and the left top plate; and the internal sides of the wing plates are hinged with the front plate and the rear plate, respectively; and the external sides of the wing plates are fixed together with the left side plate and the right side plate. The single-layer full-automatic folding recreational vehicle disclosed by the invention is advantaged in that the volume of the folded vehicle is small, the weight of the vehicle is light, the vehicle is flexible to extend; no noise is generated in the extending process, the degree of automation of the vehicle is high, the stability of the vehicle is good, and the vehicle is safe and reliable.

The invention relates to the technical field of hoisting and conveying equipment, in particular to building prefabricated component hoisting and conveying equipment. The building prefabricated component hoisting and conveying equipment comprises a horizontally-arranged base. A bearing block is arranged at the center position of the top face of the base. A rotation shaft is vertically arranged in the bearing block. A supporting plate is horizontally arranged at the top end of the rotation shaft. A rotation mechanism is arranged between the top face of the base and the bottom face of the supporting plate. A threaded hole is formed in one end of the supporting plate and internally provided with a stud. A positioning groove is formed in one end of the top face of the base. The bottom end of the stud is arranged in the positioning groove. A stand column is vertically arranged at the center position of the top face of the supporting plate. A first pulley is arranged at the top end of the stand column. An inclined rod is rotationally arranged at the top end of one side of the stand column. A first telescopic rod is vertically arranged at one end of the top face of the supporting plate. The top end of the first telescopic rod is fixedly connected with the bottom face of the inclined rod, and a second pulley is arranged at the other end of the inclined rod. The building prefabricated component hoisting and conveying equipment is simple in operation, convenient to use and capable of rotating to meet the multi-direction hoisting equipment; and prefabricated component clamping is stable, prefabricated component falling is avoided, and safety work is ensured.

The invention relates to intelligent disinfecting equipment based on the Internet of Things .The intelligent disinfecting equipment based on the Internet of Things comprises a body and a plurality of disinfecting cabinets arranged in the body .Transmission mechanisms are arranged on the two sides of each disinfecting cabinet .Each transmission mechanism comprises two sliding rails, an adjusting frame and a driving assembly .According to the intelligent disinfecting equipment based on the Internet of Things, working personnel can remotely control the equipment through Bluetooth, and thus the practicability of the equipment is improved; besides, driving wheels are controlled to rotate through driving motors, driving teeth on the peripheries of the driving wheels are matched with driven teeth, the driving teeth are evenly distributed along the semicircular surfaces of the driving wheels in the circumferential direction to collect and release the disinfecting cabinets, and thus the practicability of the disinfecting equipment is improved; furthermore, in a voice control circuit, the model number of an integrated circuit is TDA1521, the output power of the integrated circuit is high, and reliable output of voice signals is ensured; an overheating and overloading short-circuiting protection function is available, and thus the reliability of the disinfecting equipment is improved .

The invention relates to mixing equipment and particularly relates to material mixing equipment for microbial fermenting pre-treatment. The invention aims to provide the material mixing equipment for microbial fermenting pre-treatment, wherein the material mixing equipment for microbial fermenting pre-treatment is good in mixing effect, convenient to use and high in mixing efficiency. In order to solve the technical problems, the invention provides the material mixing equipment for microbial fermenting pre-treatment. The material mixing equipment for microbial fermenting pre-treatment comprises a mixing box and the like. A motor is connected to the middle top portion of the mixing box by way of bolt connection, an output shaft of the motor is connected to a first rotary rod through a coupling, the first rotary rod extends into the mixing box, a first rotary disc is welded to the bottom of the first rotary rod, and stirring rods are eccentrically welded to the bottom of the rotary disc. The mixing equipment provided by the invention is provided with a stirring device which stirs materials, and the stirring rods in different positions stir at the same time, so that the stirring rods in the three different positions stir the materials at the same time.

The invention discloses a sorting system applied to second-level and third-level parcel sorting processing centers. The sorting system comprises a climbing belt conveyor, a linear belt conveyor, at least four matrix sliding grooves, at least two bull's-eye tables, a cage trolley and a mailbag rack; the liner belt conveyor is connected with the climbing belt conveyor, the matrix sliding grooves are evenly distributed at the two sides of the linear belt conveyor, and each matrix sliding groove comprises a sliding groove inlet, a partition plate which is arranged in the sliding groove inlet and divides the sliding groove inlet into to inlet bodies, a straight sliding groove communicated with one inlet body and a turn sliding groove communicated with the other inlet body; the cage trolley is located at the tail ends of the straight sliding grooves; the mailbag rack is located at the tail ends of the turn sliding grooves; the bull's-eye tables are evenly distributed at the two sides of the linear belt conveyor, and a belt of the linear belt conveyor, the bull's-eye tables and the sliding groove inlets are flush in height. According to the sorting system, limited resources of the second-level and third-level parcel sorting processing centers are fully utilized, not only is the parcel sorting efficiency greatly improved, but also the labor intensity of workers is reduced, and the cost of manpower and material resources is effectively reduced.

The invention belongs to the technical field of book management, and particularly relates to an intelligent library book borrowing and returning system which comprises a bookshelf, a retrieval systemarranged on a desk, a black line laid on the ground and a database used for storing book data and further comprises a display plate, a base, a book taking mechanism, a book moving mechanism, a walkingmechanism and a control device. The control device is used for controlling the work of the book borrowing and returning system; The display plates are transversely arranged on the bookshelf and divide the bookshelf into multiple layers, and the display plates are used for displaying books; The bookshelf is arranged on the base, through cooperation of the conveying wheel, the conveying belt, the first rolling wheel and the second rolling wheel, the conveying belt is driven by a first motor to rotate clockwise, books are clamped in sequence, and the problem that the books fall off when a walking mechanism moves is solved. The first propelling air cylinder and the second propelling air cylinder are used for replacing the composite mechanical arm, and the safety risk caused by using the composite mechanical arm is avoided.

The invention discloses a delivery device used for an automatic vending machine, comprising a base frame, a backup plate and a control device, wherein a first spindle, a second spindle, a third spindle, a locking piece and a fourth spindle are sequentially arranged on the base frame from top to bottom; a goods holding pate is arranged on the first spindle; a support arm is arranged on the second spindle, one end of the support arm is hinged with the second spindle, the other end of the support arm is hinged with the goods holding plate, and the second spindle is connected with a second spindledriving mechanism; a goods support plate is arranged on the third spindle, a track is arranged on the goods support plate; a goods support piece is arranged on the fourth spindle, one end of the goods support piece is hinged with the fourth spindle, the other end of the goods support piece is movably connected in the track of the goods support plate, and a locking part is arranged on the goods support piece; and a locking piece is connected with a locking driving mechanism. The device realizes delivery by utilizing self gravity of goods, is high in delivery efficiency, can effectively preventgoods sticking, realizes retracting and stretching of the goods holding plate, and achieves the aim of orderly good delivery.

The invention discloses an electric shovel cable collecting vehicle. The electric shovel cable collecting vehicle comprises a vehicle frame, a roller, a drive device and a transformer, wherein the roller can be rotationally arranged on the vehicle frame and used for winding a cable, the drive device is arranged on the vehicle frame and used for driving the roller to rotate to wind or unwind the cable, and the transformer is arranged on the vehicle frame, and an electric shovel cable is connected onto the transformer; the transformer is connected with a control cabinet of the drive device through the cable after transformation; and the control cabinet is connected with the drive device through the cable. According to the electric shovel cable collecting vehicle, the input end of a high-voltage cable, entering the roller, is connected onto a wiring column, one end of another high-voltage cable is connected onto the output end in the roller, the other end of another high-voltage cable is connected onto the transformer, the electric shovel cable is connected onto the transformer, a low voltage produced by the transformer is connected onto the control cabinet of the drive device, and the control cabinet is connected with the drive device through the cable, so that the cable can be wound and unwound.

The invention provides a lamp which comprises a light source, a support part and a base. The support part is fixed on the base. The light source is fixed at one end, away from the base, of the support part. The light source comprises two lighting parts with opposite lighting directions. The base comprises an accommodating cavity at the bottom, at least two lifting frames and rollers, wherein the lifting frames are disposed in the accommodating cavity in a contractible manner, each lifting frame comprises a telescoping rod and two connecting rods, the telescoping rod comprises a first telescoping end and a second telescoping end which are opposite, the first telescoping end and the second telescoping end can be telescope along the axial direction of the telescoping rod, one ends of the two connecting rods are respectively hinged to the first telescoping end and the second telescoping end, the other ends of the two connecting rods are respectively hinged to the two hinge parts of the base, and the rollers are disposed on the telescoping rod and used for moving the lamp. By the lifting frames disposed in the accommodating cavity in the contractible manner, extending and contracting of the rollers are achieved, and the lamp can be switched between a movable state and a fixed state.

The invention relates to a communication iron tower facilitating replacement of antennas. The communication iron tower comprises a tower body and the two or more antennas and further comprises an overhaul mechanism and two or more mounting mechanisms. Each mounting mechanism comprises a first driving assembly, a platform, a supporting rod, a bottom base, a top base, a lifting sleeve, a spring, a rack, a reinforcing assembly and two or more supporting assemblies. The overhaul mechanism comprises a second driving assembly, a climbing ladder, two rotating rods, two steel wire ropes, two or more climbing rods and two or more limiting blocks. According to the communication iron tower facilitating replacement of the antennas, through the mounting mechanisms, the convenient degree of antenna disassembly and assembly is increased, thus the efficiency of antenna replacement of workers is improved, and the practicality of the communication iron tower is improved; and through the overhaul mechanism, rotation of the two rotating rods is achieved, thus retracting and extending of climbing rods are achieved, the convenient degree of overhaul of the communication iron tower is increased, meanwhile, the anti-theft performance of the communication iron tower is improved, and thus the practicability of the communication iron tower is further improved.

The invention relates to an intelligent mechanical tillage boat. The intelligent mechanical tillage boat includes a boat body component, a rotary tillage component and a lifting component; the boat body component includes a boat body, a power component, two water wheels and a front wheel, wherein the water wheels are symmetrically installed on the outside of the boat body, and the power componentis arranged inside the boat body. According to the intelligent mechanical tillage boat, the power component in the boat body component is used for driving, and accordingly the water wheels are drivenby to operate to control the movement of the boat body; a user terminal is used for sending control instructions to control the direction of movement of the boat body, accordingly the tillage positionof the rotary tillage component is changed, and on-site monitoring data is obtained by a monitoring probe; a wireless transmission unit is used for transmitting the on-site monitoring data to the user terminal in real time so that a user can observe and analyze the tillage situation in real time and send different control instructions to effectively adjust the direction of movement of the boat body; the effect of unmanned tillage by the mechanical tillage boat is realized, the tillage intensity is reduced, and the durability and precision of tillage are improved.

The invention discloses an intelligent robot for architectural ornament. The intelligent robot comprises a crawler walking mechanism, an origin rotating mechanism, a rotary turntable mechanism, an extension and retraction adjustment mechanical arm and a construction mechanism, wherein the origin rotating mechanism comprises a base plate lifting device mounted on a base plate, the base plate lifting device comprises a liftable rotary device, and a supporting device supported on the ground is mounted at the lower end of the rotary device; the rotary turntable mechanism comprises a rotary turntable rotationally mounted on the base plate, a rotary driving mechanism is arranged between the rotary turntable and the base plate, and a mechanical arm support base is mounted on the rotary turntable; the extension and retraction adjustment mechanical arm is fixedly mounted on the mechanical arm support base; and the construction mechanism is detachably mounted at the tail end of the extension and retraction adjustment mechanical arm. The intelligent robot is more compact in structural design and flexible and convenient in construction, and can realize various operations such as high-quality continuous spraying.

The invention relates to a checking-in device with high recognition precision and a face recognition function. The device comprises a main checking-in device body, a camera, a keyboard, a protection mechanism and an illumination mechanism, the protection mechanism comprises protection film, a cleaning assembly and two supporting assemblies, and the illumination mechanism comprises a driving assembly, two transmission assemblies, two slide rods, two collecting and releasing openings, tow protection assemblies, two installing plates and at least two illuminating lights; according to the checking-in device with the high recognition precision and the face recognition function, the protection mechanism drives the protection film to rotate and clean the protection film, and therefore the protection film can be kept clean, under the protection effect of the protection film, the probability that the camera is blocked by dust is reduced, and the recognition precision of the checking-in device is improved; collecting and releasing of the illuminating lights can be achieved through the illuminating mechanism, then the illuminating lights provide illumination, and therefore the recognition precision of the checking-in device is further improved.

The invention discloses a propeller folding device for an unmanned aerial vehicle. The propeller folding device comprises a bottom plate, three or more engine arms, a center ring, a driving component and a gear transmission component. The engine arms are sequentially arranged on the bottom plate in the circumferential direction, one end of each engine arm is hinged to the bottom plate through a shaft and can rotate around the hinge point, and the other ends of the engine arms are used for allowing a propeller component of the unmanned aerial vehicle to be mounted. The center ring is located in the middle of the bottom plate, the gear transmission component is mounted on the peripheral side of the center ring, transmission teeth for being matched with the gear transmission component are arranged on the center ring, a connecting rod is arranged between each engine arm and the center ring, and the driving component enables the center ring to rotate through the gear transmission component so that the engine arms can be pushed by the connecting rods to rotate to complete unfolding or folding. The propeller folding device has the advantages of being simpler in structure, easier and more convenient to operate, capable of greatly improving portability and the like.

The invention discloses a multi-station foldable electronic education control platform. The control platform comprises a base, a support plate and a movable plate, wherein the movable plate is used for placing a notebook motor and a mouse; the support plate is mounted above the base and connected with the base through a folding mechanism, the movable plate is rotatably mounted on the support plate, a handle is mounted at the side end of the movable plate, a fixing mechanism arranged on the handle is connected with an arc-shaped guide groove formed in the support plate, an L-shaped groove is formed in the handle, and an L-shaped rod is movably mounted in the L-shaped groove. The control platform is novel in design; the arranged L-shaped rod drives a bayonet lock to move in the L-shaped groove through a push rod when moving upward, the bayonet lock is detached from a pin hole, and at this time, the handle can move relative to the pin hole, so that the movable plate is driven by the handle to rotate, and correspondingly the orientation of the front end of the movable plate is adjusted. When a pressing plate is released, the bayonet lock is reclamped into a pin hole in another positionunder the action of a spring, so that the movable plate is fixed, and therefore operation control in three directions is achieved.

The invention relates to a plant protection unmanned aerial vehicle which is convenient to store and has the function of replacing a medicine storage box, including includes a main body, two landing gears, and at least two propellers, and also includes a drug delivery mechanism, a spray mechanism, and a central control mechanism, the drug delivery mechanism comprises a power pump, a first reinforcement assembly, two second reinforcement assemblies, two first delivery tubes, two storage compartments and two connection assemblies, the spraying mechanism includes a second drug delivery tube, Support bar, two support blocks, two second cylinders, two drive rods, two connecting wires, at least two move blocks, at least two first nozzle and at least two second nozzles. In the plant protection unmanned aerial vehicle which is convenient to store and has the function of replacing a medicine storage box, through the medicine conveying mechanism, the convenience of changing the medicine storagebox of the unmanned aerial vehicle is improved, thereby improving the efficiency of changing the medicine storage box of the unmanned aerial vehicle; through the spraying mechanism, the storage and release of the two transmission rods can be realized, the volume of the unmanned aerial vehicle is reduced, and the convenience of the storage of the unmanned aerial vehicle is improved.

The invention relates to a convenient outdoor clothes hanger based on the Internet of Things. The convenient outdoor clothes hanger comprises a base, a rain shelter mechanism, a center-controlled mechanism, two drying mechanisms and three clothesline poles, wherein each drying mechanism comprises a driving assembly, a drying assembly, a first transmission rod, a second transmission rod, a third transmission rod and a limiting rod, the rain shelter mechanism comprises a retracting and deploying assembly and a power assembly, and the retracting and deploying assembly comprises a roller, waterproof cloth, two elastic ropes and two fixed rods. The convenient outdoor clothes hanger based on the Internet of Things has the advantages that the drying mechanisms can control the distances among thethree clothesline poles and can drive the three clothesline poles to rotate vertically, not only is the efficiency of clothes drying improved, but also the convenient level of people drying the clothes is improved; the rain shelter mechanism can achieve retracting and deploying of the waterproof cloth, so that rainwater can be blocked through the waterproof cloth in rainy weather, thereby reducingthe possibility of clothes getting wet and improving the practicability of the clothes hanger.