66results about How to "Retractable realization" patented technology

The invention discloses a device for launching and recovering a boat on a mother ship. An opening and a launching and recovering door are arranged on the rear side of a cabin. The launching and recovering door comprises a door plate seat driven by a lifting device to ascend and descend and a door plate hinged on the door plate seat, and the door plate is driven by an opening and closing device to be opened and closed. A rail leading to the opening is arranged in the cabin, a trolley for carrying the boat and moving on the rail is arranged on the rail, and a bracket capable of docking with the rail when the door plate is opened is arranged on the door plate. The door plate is opened to enable the bracket to be docked with the rail, the boat is pushed onto the door plate, the door plate is driven by the lifting device to descend below the water level, and accordingly the boat is launched. When the boat is recovered, the door plate and the bracket are driven to descend below the water level, the boat runs to above the bracket, then the door plate is lifted to enable the bracket to support the boat, the door plate is lifted continuously to enable the bracket to be docked with the rail, and the boat is pulled into the cabin. By the device, launching and recovery of the boat on the mother ship is achieved quite conveniently, and the whole boat launching and recovery process is stable and safe.

The invention discloses a propeller folding and unfolding device for an unmanned aerial vehicle. The propeller folding and unfolding device comprises a bottom plate, three or more engine arms, a center ring, a driving component and a belt wheel 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, synchronous belt teeth are arranged on the center ring, a connecting rod is arranged between each engine arm and the center ring, and the driving component drives the center ring to rotate through the belt wheel transmission component and a synchronous belt so that the engine arms can be pushed to complete unfolding or folding through the connecting rods. The propeller folding and unfolding 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 relates to a firmly plugged portable router based on the Internet of things, which comprises a main body and at least two network cable interfaces, and is characterized by further comprising a connecting mechanism, a retracting and releasing mechanism and a central control mechanism, a plugging assembly comprises a sliding block, a sleeve, a connecting rod, a connecting wire, a driving block, a first spring, two reinforcement rods and two electrodes, a limiting assembly comprises a first fixing rod, a second fixing rod, a guide block, a transmission rod, a second spring, a sliding slot, a rotating rod, a first limiting block, a first limiting rod, a second limiting rod, a clamping block and a torsion spring, and the retracting and releasing mechanism comprises a driving assembly, a guide rod, a connecting block and a second limiting block. In the firmly plugged portable router based on the Internet of things, the connecting mechanism improves the firmness of the connection between the router and a socket so as to reduce the dropping probability of the router, and the retracting and releasing mechanism not only realizes the retraction and release of the electrodes butalso reduces the loosening probability of the electrodes so as to improve the stability of the electrodes.

The invention relates to a portable ultrasonic thickness gauge which comprises a main body, a cable and a probe and further comprises a winding and unwinding mechanism and a preprocessing mechanism. The winding and unwinding mechanism comprises a first motor, a driving shaft, a guiding ring and a guiding assembly. The guiding assembly comprises a lead screw, a triggering rod, a guiding rod, a driving sleeve, a transmission sleeve, a connecting lantern ring, a fourth magnet, a support, a first gear, a third gear, a driving unit, a moving sleeve, two connecting sleeves and two third magnets. Thepreprocessing mechanism comprises a driving assembly, a reinforcing lantern ring, a cleaning brush, a power sleeve, a fifth gear and two connecting assemblies. According to the portable ultrasonic thickness gauge, the cable can be wound to the driving shaft through the winding and unwinding mechanism, and thus the storage convenient level of the ultrasonic thickness gauge is increased; and the cleaning brush can be driven to rotate through the preprocessing mechanism, then the surface of a detected object is cleared through the cleaning brush, and thus the probability of breakdown occurring to the probe is decreased.

The invention relates to face recognition equipment with a wide monitoring range. The face recognition equipment with the wide monitoring range comprises a main body and a camera and further comprisesan extending-retracting mechanism, a protecting mechanism and at least two flying devices; the extending-retracting mechanism comprises an inflating assembly and at least two extending-retracting assemblies; each extending-retracting assembly comprises a driving unit, a vent hole, a fixing rod, a lifting block, a landing gear, an airbag, a hose, a third connecting wire and a fixed pulley; and theprotecting mechanism comprises a rotating assembly and two protecting assemblies. According to the face recognition equipment with the wide monitoring range, the extending and retracting of the landing gears are realized by using the extending-retracting mechanism to reduce the shielding of the landing gears on the cameras so that the shooting effect of the camera is improved to improve the shooting effect of the face recognition equipment; through adoption of the protecting mechanism, the extending and retracting of two first stopping plates and two second stopping plates are realized to reduce the probability that the cameras suffer collisions in the landing process of the face recognition equipment; and therefore, the losses of people are reduced.

The invention provides a retractable hydraulic swing cylinder direct driving fin stabilizer device, which is characterized in that: a mounting seat is installed in a bilge part; The first hydraulic swing cylinder is fixedly mounted on the mounting seat and comprises a first cylinder body, a retracting rotating shaft, a first cylinder blade, a rotating shaft blade, and two oil ports; a connector, wherein a low end of that connector is fixedly connected with a retracting / releasing rotate shaft; a second hydraulic swing cylinder, which is fixedly connected with the upper end of the connector, andthe axial direction is perpendicular to the axial direction of the first hydraulic swing cylinder, and includes: second cylinder, a fin shaft oppositely disposed on the inner wall of the second cylinder, protruding toward the fin shaft and extending in the axial direction, two second cylinder blades oppositely disposed on the fin shaft, protruding toward the inner wall of the second cylinder block and extending in the axial direction, and two sets of oil ports provided on the second cylinder block corresponding to the two second cylinder blades; and a fin fixedly connected to the protruding end of the fin shaft.

The invention relates to the technical field of lower limb exercise devices and discloses a joint motion exercise device for hemiplegic lower limbs. The device comprises a box body. The top inside thebox body is fixedly connected with a vertical driving connection mechanism. Front and back sides at the top of the box body are both equipped with mounting through grooves. Insides of the two mounting through grooves are internally equipped with intermediate connecting mechanisms. The two intermediate connecting mechanisms are both connected with arc connecting rods at the inside part of the boxbody. One ends, away from the corresponding intermediate connecting mechanisms, of the two arc connecting rods are fixedly connected with inside arc stirring parts. The box body, the vertical drivingconnection mechanism, the intermediate connecting mechanisms, the arc connecting rods, a long arc connection mechanism, a positioning support mechanism, a rope folding and unfolding mechanism, a connection rope and a control panel cooperate with each other. Therefore, the leg movement range can be adjusted by a current joint motion exercise device for hemiplegic lower limbs. Leg joints can exercise with legs.

The invention relates to a dust-proof portable electrocardiograph with a cable retraction function. The electrocardiograph comprises a main body, an interface, two detection heads and two cables; andthe electrocardiograph further includes a cable retraction mechanism and a dust removal mechanism, the cable retraction mechanism comprises a reeling shaft, two elastic ropes, two second bearings andtwo cleaning components, the dust removal mechanism includes a dust cover, a ventilation tube, a cam, a piston block, an air cylinder, a transmission rod, a spring, a filter net, a communication tubeand a check valve, and each cleaning component includes a first gear, a second gear, a first bearing, a rotating sleeve pipe and a cleaning brush. In the dust-proof portable electrocardiograph with the cable retraction function, retraction of the cable is realized through the cable retraction mechanism, so that the convenience of storing a cable is improved, and the convenience of carrying the electrocardiograph is improved; and dust of the interface can be removed through the dust removal mechanism, so that the probability of poor contact of the electrocardiograph is reduced, and the reliability of operation of the electrocardiograph is improved.

The invention relates to an Internet of Things-based building walkie-talkie with a protection function. The building walkie-talkie comprises a main body and a control panel; the building walkie-talkiefurther comprises a retracting and release mechanism, a cleaning mechanism and a central control mechanism; the retracting and release mechanism comprises two second guide rods, two third guide rods,two first driving assemblies, two displacement assemblies and two protection assemblies; and the cleaning mechanism comprises a connecting shaft, a cleaning brush, two lifting blocks, two toothed bars, two gears, two second driving assemblies and two first guide rods. According to the Internet of Things-based building walkie-talkie with the protection function of the invention, the retracting andrelease mechanism is adopted, so that the retracting and release function of the building walkie-talkie can be realized, and therefore, the building walkie-talkie can be automatically retracted whennot being used, and the aging speed of the building walkie-talkie can be slowed down; the control panel can be cleaned through the cleaning mechanism, so that the surface of the control panel can be kept clean, and therefore, the sensitivity of each device on the control panel can be improved, and the practicality of the walkie-talkie can be improved.

The invention discloses a water pipe retractable device, which comprises: a base; a water pipe retractable shaft, which is erected on the base and driven to rotate by a retractable driving mechanism; The water chamber is provided with a water pipe joint connected to one end of the water pipe; the water inlet joint, the end of the water pipe retracting shaft provided with the water guide chamber is connected to the water inlet joint in a rotatable manner; and the swing pipe device includes: a bracket, which erected on the base; the swing tube guide rail, which is erected on the bracket; the sliding seat, which is arranged on the swing tube guide rail and driven by a swing tube driving mechanism to slide; and two guide rollers, the two guide rollers are erected in parallel on the sliding seat. The invention can automatically realize the retracting and unwinding of the water pipe, and the pipe swing device can make the water pipe neatly rolled up on the water pipe retracting shaft or neatly released in layers, so as to effectively improve the retracting efficiency of the water pipe and reduce the labor of workers. strength.

The invention discloses an unmanned above-water warning and defending system. The unmanned above-water warning and defending system comprises a buoy connected with a main vessel, a foldable drone anda mission payload mounted on the foldable drone; the inside of the buoy is provided with a controller, a horizontal sensor, an infrared sensor, an optical transceiver, a storage battery power module,a sea wave power generator, a drone take-off and landing platform and an electric winch, wherein the horizontal sensor, the infrared sensor, the optical transceiver, the storage battery power module and the sea wave power generator are connected with the controller, the sea wave power generator is connected with the storage battery power module for supplying power, the optical transceiver and thestorage battery power module achieve signal and power transmission with the foldable drone via photoelectric compound cables wound on the electric winch, and the drone take-off and landing platform and the driving motor of the electric winch are connected with the controller. The unmanned above-water warning and defending system can carry the drone to a designated position via the buoy and launchthe drone after determining sea surface conditions, then achieve sea surface monitoring with the drone, thereby achieving the aims of flexible movement, long-time operation, remote monitoring and unattended working and expanding the monitoring and defending range of submarine vessels.

The invention provides a heavy anti-collision buffer vehicle. The heavy anti-collision buffer vehicle comprises a bearing truck, a lorry-mounted crane, an auxiliary frame assembly, a reversal drivingmechanism, a folding lamp holder assembly and a folding buffer block assembly, the lorry-mounted crane is arranged behind a cab of the bearing truck and on the auxiliary frame assembly of the front ofa carriage, the folding lamp holder assembly is arranged on the last side of the carriage of the bearing truck, the folding buffer block assembly is located on the rear side of the folding lamp holder assembly, and the lower end of the folding lamp holder assembly is arranged on the auxiliary frame assembly through a connecting base. According to the heavy anti-collision buffer vehicle, a first-stage buffer block assembly and a second-stage buffer block assembly are adopted for series side by side front and back, the buffer distance is long, and the anti-collision effect is good. Functions ofthe anti-collision buffer vehicle are increased by arranging the lorry-mounted crane, and lifting and hoisting operation can be carried out in traffic construction.

The invention relates to an optical transmitter-receiver with stable signal transmission. The optical transmitter-receiver comprises a shell, a circuit board and at least two interfaces, and further comprises a radiating mechanism and a reinforcing mechanism; the radiating mechanism comprises a heat-conducting plate, a water pump, a water tank, two water pipes, at least two radiating sheets, at least two reinforcing sleeves and at least two transceiving components; the reinforcing mechanism comprises two protective components and two locking components; the protective component comprises a connecting base, a cover plate, a rubber strip, two rotating rods and two limiting blocks; in the optical transmitter-receiver with stable signal transmission, the heat produced by the circuit is conducted to the external of the shell through the radiating mechanism, thereby reducing the influence on an electronic device on the circuit board by high temperature and improving the signal transmission stability of the optical transmitter-receiver; two rubber strips are driven to rotate through the reinforcing mechanism, so that the joint can be fixed through the rubber strip; the connection stability of the joint and the connector is improved, and the signal transmission stability of the optical transmitter-receiver is further improved.

The invention relates to an intelligent sound box with a display screen folding and unfolding function. The intelligent sound box comprises a main body and a display screen, and further comprises a folding and unfolding mechanism and a heat dissipation mechanism. The heat dissipation mechanism comprises an air pump, a second pipeline, a first pipeline, a third pipeline, a second electric valve, asealing plate and at least two vent holes. The folding and unfolding mechanism comprises a lifting plate, a connecting assembly, a storage groove, two sealing cylinders, two lifting rods, two elasticropes and two first electric valves. The connecting assembly comprises a rotating shaft, two mounting bearings and a friction block. According to the intelligent sound box with the display screen folding and unfolding function, folding and unfolding of the display screen are achieved through the folding and unfolding mechanism, the probability that the display screen is damaged is reduced, the service life of the intelligent sound box is prolonged, the heat dissipation efficiency of the intelligent sound box is improved through the heat dissipation mechanism, and the working stability of the intelligent sound box is improved.

The invention discloses a device and a method for charging an electric automobile in traveling, and belongs to the technical field of the electric automobile. The device is characterized in that a storage battery is arranged on the electric automobile; a power supply line cathode is arranged on a traveling road; a power supply line anode is correspondingly arranged above the electric automobile; an anode sliding contact and a cathode sliding contact are arranged on the electric automobile; conductors are arranged on the anode sliding contact and the cathode sliding contact and are contacted with the anode and the cathode respectively; the conductors of the two sliding contacts are electrically connected to corresponding electrodes of the storage battery; an anode sliding contact deploying and retracting device and a cathode sliding contact deploying and retracting device are arranged and enable the anode sliding contact and the cathode sliding contact to be contacted with the anode and the cathode of the power supply line respectively, so that the electric automobile is charged in traveling. The device and the method are environment-friendly and have higher popularization and use value.

The invention relates to a fire-fighting emergency illumination device. The fire-fighting emergency illumination device comprises a main body and two illuminating lamps, and further comprises a retracting and stretching mechanism and a moving mechanism, wherein the retracting and stretching mechanism comprises a driving assembly, a first guide rod, a second guide rod, a lifting plate, two first moving sleeves, two second moving sleeves, two sliding strips, two cover plates, two lifting blocks and two transmission rods, the moving mechanism comprises a guide rail, two reinforcing rods, two moving bases, two moving wheels and two second motors, and the driving assembly comprises a first motor, a rotating disc, two connecting lines and two springs. In the fire-fighting emergency illuminationdevice, the illuminating lamps are driven to ascend and descend through the retracting and stretching mechanism, then the illuminating lamps can retract and stretch, then the fireproof performance ofthe emergency illumination lamp is improved, the fire-fighting emergency lamp can be driven to move along the guide rail through the moving mechanism, then the probability that the fire-fighting emergency lamp is shielded by a collapse object is reduced, and then the illumination effect of the fire-fighting emergency lamp is improved.

The invention relates to the technical field of water quality detection. The invention further discloses a remote control type water quality online sampling and detecting device. The device comprisesa transverse plate, a vertical rod is fixedly mounted at the top end of the transverse plate; a top plate is fixedly mounted at the top end of the vertical rod, an electric push rod is fixedly mountedat the left end of the vertical rod, a mounting frame is fixedly mounted at the output end of the electric push rod, a first motor is fixedly mounted at the top end of an inner cavity of the mountingframe, and a transmission rod is fixedly mounted at the output end of the first motor. The remote control type water quality online sampling detection device has the advantages that water sources atdifferent positions and different depths can be sampled, and the sampling efficiency is high; and the problems that some water quality sampling devices cannot sample water sources at different positions and at different depths, a detection result is one-sidedness, when deeper water is sampled, sampling can only be carried out at water level sections one by one, the sampling time is long, and the efficiency is low are solved.

The invention provides a rotator towfish retracting / releasing device. The rotator towfish retracting / releasing device comprises a mounting base on which a plurality of upright columns are arranged; the rotator towfish retracting / releasing device is characterized in that guide rails are arranged on the top ends of the plurality of upright columns, a trolley is mounted on the guide rails and is capable of moving along the guide rails, a traveling hanging bracket is mounted on the trolley, and an anti-vibration pulley block and a circular-arc-shaped guide plate are arranged on the traveling hanging bracket; a storage rack is arranged on the mounting base; oscillating arm mechanisms are arranged on the two sides of the storage rack to form a slider-crank mechanism; during working, the oscillating arms are capable of oscillating out of the mounting base or within the mounting base along with the traveling hanging bracket in a linkage manner; the rotator towfish retracting / releasing device is further provided with a retracting / releasing winch; a towrope on the retracting / releasing winch bypasses the anti-vibration pulley block of the traveling hanging bracket and is connected with the rotator towfish. By adopting the structure and mechanisms, the traveling hanging bracket, the oscillating arm mechanisms, a stern line, the towrope, the storage rack and the retracting / releasing winch act together, the rotator towfish retracting / releasing device can complete the actions such as towfish retracting (releasing), towing, emerging out of water, centralizing, reversing and storing, and capable of smoothly realizing the towfish retracting / releasing, towing and storing functions.

The invention provides a shaft disc type line winding and unwinding device used for vibratory impulse shipboard measurement. The shaft disc type line winding and unwinding device is composed of a winding disc, a buckle type line containing shaft disc and a shaft disc supporting frame. The buckle type line containing shaft disc is fixedly connected with the winding disc, and a line passing hole is formed in the center of the buckle type line containing shaft disc. A knob buckle mechanism is mounted in the buckle type line containing shaft disc, and a manual folding rocker is arranged inside the outer side of the buckle type line containing shaft disc in the radial direction. The shaft disc supporting frame is used as a supporting structure of the winding disc and provided with a supporting handle and a parallel-connection shaft hole. Multiple sets of shaft disc type line winding and unwinding devices are expanded in parallel through the shaft holes and knob buckles, and are supported and fixed through auxiliary shaft rods. Through the shaft disc type line winding and unwinding device, reasonable control over the allowance of the two ends of a signal line arranged in any length is achieved, and the trouble that all traditional signal lines are expanded to be arranged can be effectively avoided; meanwhile, the shaft disc type line winding and unwinding device is high in expandability, and multiple shaft disc type line winding and unwinding devices can be combined and fixed in parallel and stored and taken out uniformly; and the structure is reliable, light and rapid.

The invention discloses a top-blowing and bottom-blowing dual-purpose smelting device which comprises a converter, a converter cover, a support, a driving mechanism for driving the converter to rotate and a converting mechanism, a converter body of the converter is spherical, the converter is rotatably connected with the support, a refractory lining is arranged in the converter, a discharging pipe for discharging smoke is arranged at the connecting position of the converter and the support, the converting mechanism comprises a top-blowing pipe, a bottom-blowing structure and an air-inlet pipe, the top-blowing pipe and the bottom-blowing structure are both fixed to the converter cover, the top-blowing pipe and the converter cover are coaxially arranged, the top-blowing pipe is provided with a fireproof wrapping layer, the bottom-blowing structure is arranged at the inner side of the converter cover, the bottom-blowing structure is cylindrical and can be inserted into a converter opening of the converter, the outer wall of the bottom-blowing structure is tightly attached to the inner wall of the converter opening, the bottom-blowing structure is made of the same material as the refractory lining, a plurality of air holes are reserved in the bottom-blowing structure, all the air holes communicate to the air-inlet pipe, the converter cover and the converting mechanism can synchronously move along with rotation of the converter, and the converting mechanism is further provided with a pipeline control mechanism used for limiting the movement path of the air-inlet pipe.

The invention discloses a photovoltaic floating power station follow-up device and a working method thereof. The photovoltaic floating power station follow-up device comprises a water level monitoring device, a computer, a wireless signal transmitting system, a wireless signal receiving system, a fixing rope, a photovoltaic array, an automatic winding and unwinding device and a traction fixing pile; the signal output end of the water level monitoring device is connected with the computer, and the signal output end of the computer is in communication connection with the automatic winding and unwinding device through the wireless signal transmitting system and the wireless signal receiving system; and the automatic winding and unwinding device is installed on a photovoltaic array, the first end of the fixing rope is connected with the traction fixing pile, and the second end of the fixing rope is connected with the automatic winding and unwinding device. Water level information is obtained through the water level monitoring device, and the automatic winding and unwinding device is controlled according to the information, so that winding and unwinding of the fixing rope are achieved. Therefore, the tension of the fixing rope is consistent under the condition that the water level rises and falls.

The invention provides a simple open channel mud level meter convenient to install. The simple open channel mud level meter comprises a fixing frame, a box body, a pay-off reel device, a weighing device, a meter counter device, a steering device, an anti-collision beam device, a controller, a steel wire rope and a fish lead, the fixing frame is connected with the box body in a riveting mode, and the anti-collision beam device, the weighing device, the steering device, the pay-off reel device and a meter counting wheel support are mechanically connected with the box body. One end of the steel wire rope is mechanically connected with the pay-off reel device, the steel wire rope sequentially penetrates through the weighing device, the meter counter device, the steering device and the anti-collision beam device, the tail end of the steel wire rope is mechanically connected with the fish lead, and the controller is electrically connected with the pay-off reel device, the weighing device, the meter counter device and the anti-collision beam device. The controller is the control core of the whole device. It can be guaranteed that the mud level depth of the yellow-guiding main canal or the open canal is conveniently measured, the accuracy of updating canal section information in real time through radar flow measurement and ultrasonic flow measurement sensors is guaranteed, the automation level is high, operation is easy, and safety and reliability are achieved.

The invention discloses a double-layer roller winch for multi-cable-diameter dragging arrayed cables and belongs to the technical field of arrayed cable winding and unwinding equipment. The double-layer roller winch comprises a bracket, an outer roller, an inner roller and a speed reduction motor; the outer roller and the inner roller are both rotationally arranged on the bracket and are correspondingly used for winding and unwinding a zero-buoyancy cable section and a heavy cable section; the wall of the outer roller is provided with a gap for the inner roller to wind the cable; the bracket is further provided with a transmission brake system; the speed reduction motor is used for transmitting power to the outer roller and the inner roller by virtue of the transmission brake system, and the transmission brake system can switch the working state of the outer roller and the inner roller; one end of the inner roller is further provided with a baffle; and the two sides of the baffle are correspondingly used for winding and unwinding the heavy cable section and a transmission array. The double-layer roller winch for the multi-cable-diameter dragging arrayed cables, disclosed by the invention, can realize winding and unwinding of various types of different-cable-diameter arrayed cables of the zero-buoyancy section, the heavy cable section and the transmission arrays, and is concisein overall layout and simple in use.

The invention discloses a multi-multiplying-power lifting mechanism of a mechanical decontamination slusher. The multi-multiplying-power lifting mechanism is used for decontamination work of dirty blocking railings of a water inlet of a water turbine of a power station or a water guide opening of a pump station; and the multi-multiplying-power lifting mechanism comprises a hoist steel wire rope (6), a slusher opening steel wire rope (5), a multi-multiplying-power lifting tool (8) of the hoist steel wire rope (6), a multi-multiplying-power lifting tool (7) of the slusher opening steel wire rope (5), a winding drum device (2) for winding the hoist steel wire rope (6) and the slusher opening steel wire rope (5) at the same time, a driving mechanism (1) of the winding drum device (2) and a rack (3) of the lifting mechanism. Compared with the prior art, a steel wire rope winding and unwinding device (4) for opening and closing the slusher is further arranged at the tail end of the slusher opening steel wire rope (5), and the problem that the volume of the lifting mechanism is obviously increased due to increase of the slusher volume and the dead load of the mechanical decontamination slusher is solved; meanwhile, an opening and closing mechanism is simplified, so that the overall decontamination device is simpler and more compact; and the reliability of the device is improved, and the overall investment of the device is reduced.

The invention relates to the technical field of winch devices, in particular to a winch for captive balloon cable take-up and paying-off. The winch comprises a power assembly and a rotary supporting assembly. The rotary supporting assembly comprises a winding drum and a photoelectric sliding ring, the photoelectric sliding ring and the power assembly are both arranged on the inner side of the winding drum, the power assembly comprises a driving component, a brake component, a first gear pair and a first transmission shaft, the first transmission shaft is connected with the winding drum throughthe first gear pair, the driving component is connected with the first transmission shaft through the brake component so as to drive the winding drum to rotate in the axial direction, an optical fiber and an electric wire at the fixed end of the photoelectric sliding ring are connected with an external optical transmitter and receiver and a power source, an optical fiber and an electric wire of the rotary end of the photoelectric sliding ring are connected with a captive balloon cable, the photoelectrical sliding ring and the winding drum are coaxially arranged, the rotary end is connected with the winding drum, and therefore the winding drum drives the rotary end of the photoelectrical sliding ring to rotate. The internal space of the winding drum is effectively utilized, the overall size of the winch is reduced, and carrying is convenient; and automatic brake of the winch is achieved in the ways of thread rotation and friction piece pressing, and operation is easy and convenient.

The invention provides foldable OLED display equipment. The foldable OLED display equipment comprises a foldable supporting frame body and a foldable driving assembly; a flexible supporting surface isarranged on the folding supporting frame body, and an OLED flexible screen is arranged on the flexible supporting surface; the folding driving assembly is connected with the folding supporting framebody and drives the folding supporting frame body to be unfolded or folded. Compared with the prior art, the foldable OLED display equipment has the beneficial effects that when the foldable OLED display equipment needs to be used, the folding driving assembly drives the folding supporting frame body to be unfolded, and then the flexible supporting face and the OLED flexible screen can be controlled to be unfolded; when the foldable OLED display equipment is not used, the folding driving assembly drives the folding supporting frame body to be folded, that is to say, the flexible supporting face and the OLED flexible screen can be controlled to be folded. Therefore, the size, the space and the safety of the display equipment can be considered, and market requirements are met.

The invention relates to a security unmanned aerial vehicle with undercarriage folding and unfolding functions and a high-definition shooting function. The unmanned aerial vehicle comprises a main body, a camera, four flight devices and four brackets, and further comprises a folding and unfolding mechanism and four supporting mechanisms, the folding and unfolding mechanism comprises a first cylindrical notch, a piston block, a first permanent magnet, a second permanent magnet, an air pressure sensor, a connecting rod and four air collecting assemblies, each supporting mechanism comprises a second cylindrical notch, an undercarriage, a buffer assembly, a spring, a third pipeline, a second electric valve, a second pipeline and a first electric valve, each air collecting assembly comprises anair collecting pipe, a third electric valve and a first pipeline, and each buffer assembly comprises an air conveying hole and an air bag. The buffering effect on the camera is achieved through the folding and unfolding mechanism, shaking of the camera is reduced, the shooting definition of the unmanned aerial vehicle is improved, shielding of the supporting mechanisms on shooting of the camera is reduced through folding and unfolding of the supporting mechanisms, and the practicability of the unmanned aerial vehicle is improved.

The invention provides drum-type automatic hose winding and unwinding equipment which comprises a mounting rack, a winding and unwinding wheel disc, a driving mechanism and a plurality of clamping wheels; the winding and unwinding wheel disc is rotatably connected to the mounting rack and used for winding and unwinding the hose with one end wound on the winding and unwinding wheel disc; the driving mechanism is connected with the power input end of the winding and unwinding wheel disc and used for driving the winding and unwinding wheel disc to rotate; and the clamping wheels are arranged at intervals in the circumferential direction of the winding and unwinding wheel disc and used for applying clamping force to the hose, so that the hose is kept in a tight state during winding and unwinding. According to the drum-type automatic hose winding and unwinding equipment, the hose can be wound and unwound, site construction difficulty caused by disordered placement of the hose is avoided, fixed-point placement is achieved, space is saved, site cleanliness is kept, the hose can be prevented from being damaged due to random stacking, and the cost is reduced; and besides, part of the hose is used for dangerous goods conduction, the drum-type automatic hose winding and unwinding equipment can avoid hose pollution and also can prevent the hose from being polluted, the hose can be reused,and the service life of the hose is prolonged.