72results about How to "Offset torque" patented technology

The invention provides an aerocar which comprises a car body, and further comprises a lifting device and a self-rotating device, wherein the lifting device is arranged on the car body; the self-rotating device comprises a first guide plate and a first driving device; the first guide plate is arranged on the car body in a pivoted manner; the pivot axis of the first guide plate extends in the horizontal direction; the first guide plate is positioned in the middle or below the lifting device; the first driving device is used for driving the first guide plate to pivot. The aerocar provided by the invention is not only prevented from self-rotation phenomenon, but also is convenient to steer.

The invention provides a sliding cover hinge of sliding cover type mobile electronic device comprising fixing body, upper sliding body, middle sliding body. Drive mechanism can store energy and drives upper sliding body and middle sliding body for inverse motion when releasing the energy. The drive mechanism comprises cross type bracket of two directions which has common central axis and pivots around the axis. In the inventive scheme upper sliding body and middle sliding body can shift to reverse direction corresponding to fixed body so as to enlarge exponentially relative range when openingsliding cover, display screen and keyboard size is enlarged with same overall size; in addition, two direction brackets produces torques relative to mobile electronic device and the torques are equaland opposite in direction, so torques can mutually counteract to enable sliding cover sliding more smoothly than ever structure.

Provided is a double-die-plate squeeze casting machine used for light metal. The double-die-plate squeeze casting machine comprises die locking devices, die closing oil cylinders, a movable die plate, large bars, die moving oil cylinders, a fixed die plate, T-shaped grooves, T-groove bolts and a base. Each die locking device comprises a die locking oil cylinder, a first locking nut, long screws, a steel plate and a second locking nut. Each die locking oil cylinder comprises a die locking piston and a die locking cylinder body. Each die closing oil cylinder comprises a die closing piston sleeve and a die closing cylinder body. Each rapid die moving oil cylinder comprises a die moving piston and a die moving cylinder body. According to the double-die-plate squeeze casting machine used for the light metal, the four large bars are locked through the four independent die locking oil cylinders correspondingly; even if the installing plane or the parting surface of the movable die plate and the fixed die plate has certain non-parallelism, the effect that the locking force of each large bar is completely equal can also be ensured; the length of a machine body of the squeeze casting machine can be shortened through the movable die plate, the fixed die plate and the matched oil cylinders, so that the occupied area of the equipment is reduced, the workshop capacity and the output rate are increased, the integral rigidity and the operational stability of the equipment can further be improved, and the die closing speed and the die closing efficiency are increased through the simplified structure.

The invention discloses an automatic weeding robot and a control method thereof. The rice field weeding control has the effects of promoting the growth of rice and saving fertilizer, and overcomes the problem that the existing weeding devices cannot remove the weeds between the plants. The automatic weeding control robot comprises a marching mechanism, an inter-row weeding mechanism, an inter-plant weeding mechanism, a machine frame and a camera. The marching mechanism comprises a first stepper motor, a motor seat, a first bushing, an axle and marching wheels. The inter-row weeding mechanism comprises a first direct current motor, a gear box, a first drive shaft, a second shaft, a third shaft, a second bushing, an inter-row weeding shaft and an inter-row weeding claw. The inter-plant weeding control mechanism comprises a second direct current motor, a fourth transmission shaft, a first pulley, a bearing box, a swinging central shaft, a second stepper motor, a bearing, a swinging arm, a second pulley, a swinging box, a drive belt, an inter-plant weeding shaft and an inter-plant weeding claw. When in the working process, the automatic weeding control robot can ensure that the rice is not damaged when removing the grasses between the plants.

The invention belongs to the technical field of drilling, and particularly relates to a directional drilling execution mechanism based on a three-speed drill bit. The directional drilling execution mechanism comprises a drill bit drill stem, a drill bit, a pressing support plate, pressing electromagnetic telescopic rods, a connection structure, a positioning mechanism, a motor, an electromagnetic telescopic support plate, rotation pairs and a universal joint, wherein the drill bit is connected with the motor through the drill bit drill stem, the connection structure, the universal joint and a motor revolving shaft; the universal joint is provided, so that the drill bit drill stem can still be driven by the motor to rotate after assuming a certain angle relative to the motor revolving shaft; the drill bit drill stem is arranged on the pressing support plate; three rotation pairs are added when two pressing electromagnetic telescopic rods are arranged on the pressing support plate and the pressing telescopic rod support plate; through the design, when the drill bit drills forwards, the drill bit is allowed to form a certain angle with the motor. By adopting the directional drilling execution mechanism, the angle between the drill bit drill stem and the motor revolving shaft can be controlled, directional drilling can be performed, and high practicability is achieved.