66results about How to "Retractable realization" patented technology

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 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 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 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 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 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.