37results about How to "Enough lift" patented technology

The invention provides a three-dimensional material warehouse lifting device which comprises a supporting frame, a plate carrying base, a plate carrying device, lifting device bodies and a lifting drive device. The lifting drive device is arranged on the top of the supporting frame. The lifting device bodies are arranged on the two sides of the supporting frame correspondingly and driven by the lifting drive device. The plate carrying device is arranged on the lifting device bodies and can move up and down under the effect of the lifting device bodies. The plate carrying base is arranged belowthe plate carrying device. By the adoption of the plate lifting device, plates can be lifted, and then placed into a three-dimensional material warehouse matched with the plates, meanwhile, the plates taken out from the three-dimensional material warehouse can be conveyed to the bottom layer, and the plates are exchanged among stations.

The invention relates to a cable-cable pile pulling method and a cable-cable pile pulling system, belonging to the technical field of pile removal in water conservancy, highway, railway, municipal, bridge and other projects. The cable pile pulling method includes the following steps: 1) exposing the top of the pile to be pulled after pretreatment; 2) drilling a certain number of first and second anchor holes on the top of the pile to be pulled; One end of the anchor cable material is lowered to the bottom of the first anchor hole and the second anchor hole, and the other end is exposed to the top of the pile to be pulled out; 4) Pour grout into the first and second anchor holes; 5) Pass the lifting equipment Pulling up the piles to be pulled out, in pulling out the piles, the other end of the anchor cable material fixed in the second anchor hole is lifted symmetrically or asymmetrically by lifting equipment at the same time to pull up the piles to be pulled out or make the piles to be pulled out laterally displaced. The inclined cable pile pulling method and the inclined cable pile pulling system can better meet the requirements of the lifting force of the pile pulling. At the same time, when the inclined cable is lifted asymmetrically, the horizontal force can be obtained, so that the horizontal displacement of the pile can be achieved, and the pile pulling resistance can be reduced. .

The invention discloses a Variable-wing type aircraft with a controllable circular rector, comprising a propeller, a main engine, an aircraft body, wings, a vertical tail and a horizontal tail, wherein an impeller power machine is arranged at the connecting part of the middle part of the aircraft body and the wings; each wing is internally provided with an impeller; the rotating shafts of the impellers are fixed on an end plate of the wings through bearings; an output shaft of the impeller power machine is connected with the rotating shafts of the impellers; the parts of the wings, above or below the impellers, are open; the front edge and the rear edge of each wing are internally provided with an upper movable arc-shaped cover plate and a lower movable arc-shaped cover plate which are used for covering the upper surface and the lower surface of the corresponding impeller; and the upper arc-shaped cover plate and the lower arc-shaped cover plate are connected with control motors through guide rails, worms and reducers. According to the controllable-circular-rector variable-wing type aircraft, the impellers rotate to accelerate air flow so as to generate circular rector, so that the wings increase the extra lift, and the aircraft can generate enough lift to fly when the speed of relative movement of the aircraft and air is very low; consequently, the taking off and landing safety of the aircraft is greatly improved, and the aircraft can generate enough lifting force to realize the short-distance taking off and landing.

The invention discloses an aerial pesticide spraying device which comprises an aircraft body, a spraying mechanism and a landing mechanism, wherein the aircraft body is provided with wings, the spraying mechanism is arranged in the aircraft body, the landing mechanism is fixed at the bottom of the aircraft body, and the spraying mechanism is arranged in the wings. When a first impeller and a second impeller which are arranged in the aerial pesticide spraying device rotate reversely, generated reverse liquid flows cause cross interference to achieve a damping effect, and the mechanical energy generated by device landing is converted to internal energy so as to achieve a buffering effect; the higher the sliding speed of the device is, the greater the impact force is, and the greater the damping is; when the device slides and nearly stops, the rotation speeds of the first impeller and the second impeller are reduced, and the damping is correspondingly reduced; when the device lands at a high speed, buffering is provided; and the surfaces of spray nozzles are leveled to the bottoms of the wings, so that the flight resistance is reduced, the aerodynamic structure performance of the wings is kept, enough lift force of the wings is generated during flight, and the problem of larger flight resistance caused by exposure of the spraying mechanism is solved.