72results about How to "Offset torque" patented technology

The invention discloses a coaxial double-rotor helicopter core and a helicopter. The coaxial double-rotor helicopter core comprises an upper rotor and a lower rotor which are coaxially connected through a rotary shaft, a server for controlling the upper rotor and the lower rotor to swing and motors for controlling the upper rotor and the lower rotor to rotate oppositely. The rotary shaft comprises an inner shaft body and an outer shaft body, the inner shaft body is connected with the upper rotor, the outer shaft body is connected with the lower rotor, and the upper rotor and the lower rotor are connected through a swash plate assembly. The swash plate assembly comprises an upper swash plate and a lower swash plate. Each of the upper swash plate and the lower swash plate comprises an inner control panel and an outer control panel which are connected through a knuckle bearing. The inner control panel of the upper swash plate is connected with the upper rotor through first connecting rods and rotates reversely along with the upper rotor. The outer control panel of the lower swash plate is connected with the server and controlled by the server to be linked vertically. The inner control panel of the lower swash plate and the outer control panel of the upper swash plate are in linkage through second connecting rods and rotate forwards along with the outer shaft body. By the adoption of the coaxial double-rotor helicopter core, the linkage synchronous adjustment of the upper rotor and the lower rotor is achieved, the torque generated in the rotation process of the two rotors can be effectively counteracted, and the helicopter is more stable.

The invention discloses a coaxial dual-propeller mechanism capable of achieving synchronous folding of paddles. A mounting bracket is provided with a motor, a rotary reversing gear assembly and a coaxial dual-propeller part, and the coaxial dual-propeller part comprises a forward foldable propeller, a reverse foldable propeller, an inner shaft and an outer shaft tube; a linkage rotation mechanismis arranged between the end of the outer shaft tube and the inner shaft, the inner shaft and the outer shaft tube are coaxially embedded, one of the inner shaft and the outer shaft tube drives the forward foldable propeller, the other of the inner shaft and the outer shaft tube drives the reverse foldable propeller, and the output end of the motor is directly connected with the inner shaft, and connected with the outer shaft tube through the rotary reversing gear assembly. By means of the coaxial dual-propeller mechanism, the moment when an aircraft enters water, the propellers can be folded,the impact force can thus be reduced, and the use of the coaxial dual propellers offsets the torque generated when the propellers rotate; meanwhile, through synchronization of folding angles of the propellers, the probability of collision generated when the dual-propeller mechanism rotates relatively is also avoided, and the propelling requirement of an underwater-aerial amphibious aircraft is metto a certain degree.

The invention discloses a tool and method for machining comb lines on an inner wall of a cylinder liner, and belongs to the field of machining. The tool for machining the comb lines on the inner wall of the cylinder liner comprises a knife holder and a comb line knife. The comb line knife comprises a hilt, a crossbeam, auxiliary hilts and rollers, a U-shaped groove is formed in each auxiliary hilt, and directions of openings of the U-shaped grooves in the two auxiliary hilts are opposite to each other. Each U-shaped groove is connected with the corresponding roller through a corresponding hinge pin, and outer circle surfaces of the two rollers are higher than the tops of the corresponding U-shaped grooves. A threaded rod is mounted in the middle of each of the two auxiliary hilts, and each auxiliary hilt is connected with the corresponding threaded rod through a corresponding fixing device. In addition, the method for machining the comb lines on the inner wall of the cylinder liner comprises the following steps: step A, mounting a clamp and a knife; step B, adjusting the clamp and the knife; step C, rolling the comb lines; step D, removing burrs; and step E, cleaning and polishing the comb lines. The special tool is used for machining the comb lines, damage to a machine tool is small, and machining steps are simple; and the machined cylinder liner can adsorb carbon deposits and is high in strength.

The invention discloses an air injection auxiliary device of a rotor unmanned aerial vehicle. The air injection auxiliary device comprises an unmanned aerial vehicle body, a visual module and an air injection auxiliary device body. The visual module comprises a three-axis holder and a camera. The air injection auxiliary device body comprises a base, a rotating shaft, a connecting rod and an air injection device. The air injection device comprises a motor, a fan, an air inlet, an air injection port and a filter screen. The wind resistance of the unmanned aerial vehicle is improved by spraying air towards the same direction of the wind direction through the air spraying auxiliary device. The three-axis holder and the camera are carried, and the air injection mode of the air injection auxiliary device is adopted, so that the active obstacle avoidance capability and the response speed of the unmanned aerial vehicle are improved. The unmanned aerial vehicle can take off and land more simply and stably through different air injection forces of the air injection auxiliary device, and the reliability of the unmanned aerial vehicle is improved. When the unmanned aerial vehicle air injection auxiliary device is in an auxiliary take-off state, all the air injection auxiliary devices inject air vertically and downwards at the same time, and the maximum load of the unmanned aerial vehicle is further improved.

The invention provides a real-time measuring device and a measuring system for ice layer thickness of an ice pool. A fixing box of a lifting device fixes the lifting device and a measuring and separating device on a wall above an ice pool. The fixing box of the lifting device is also internally provided with a stepping motor, a shaft coupling, a steel pipe U-type pulley, and a vertical bearing pedestal, and other components. The bottom of the fixing box is connected with five extension tubes. A steel wire rope is wound on the steel pipe U-type pulley of the lifting device. The steel wire ropeis connected with the fixing box of the measuring and separating device through the extension tube. The fixing box of the measuring and separating device is also internally provided with a stepping motor, a resistance-type ice thickness measuring instrument, a direction connection base, a shaft coupling, a resistance outer sleeve, a bearing, a bearing supporting plate, and a shockproof pipe clamp,and other components. The device and the system are suitable for real-time measurement of ice layer thickness of a water surface of an ice pool in an ice making process, and are advantaged by convenient measurement, high precision, and real-time measurement of ice layer thicknesses on different positions, and effectively improve efficiency of ice layer thickness measurement of the ice pool in anice making process.

The invention discloses a suspension system for an unmanned vehicle. The suspension system comprises a suspension axle, a driving axle and a braking axle; the suspension axle comprises a swing arm, two cross pull rods and a spring shock absorber assembly; the driving axle comprises a cage universal constant speed transmission shaft, a bearing, a handlebar head and wheels; and the braking axle comprises a brake caliber, a brake pad and a brake disc. The system well bears impact and torque under the combined action of the swing arm for bearing a longitudinal force, the cross pull rods for bearing lateral forces of the wheels and the spring shock absorber assembly for bearing the longitudinal force; and the driving axle and the braking axle are directly connected with the wheels through the swing arm, so that the structure is simplified and the transmission link is reduced. The suspension system has the advantages of simple, reasonable and compact structure, good shock absorption performance and the like, and can be applied to the unmanned vehicle or other independently driven vehicles.

The invention relates to the technical field of power generation, and particularly discloses a wave power generation device. The wave power generation device comprises a float bowl arranged on the water surface and a power generation unit arranged under the water surface; a connecting rod is arranged between the float bowl and the power generation unit; the power generation unit comprises a firstpaddle structure and a second paddle structure which are coaxially arranged, and a generator is arranged between the first paddle structure and the second paddle structure; the generator comprises a stator structure and a rotor structure, the rotor structure can rotate relative to the stator structure, and the stator structure is fixed to the connecting rod; the first paddle structure is fixedly connected with the stator structure, and the second paddle structure is fixedly connected with the rotor structure; the rotating directions of the first paddle structure and the second paddle structureare always opposite; and when the first paddle structure and the second paddle structure rotate along with flowing of water, the generator generates electric energy. The wave power generation deviceis simple in structure, small in size and low in cost, can effectively resist impact, can generate power when waves rise or fall, and also improves the energy conversion efficiency.

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 discloses a 10kV distribution network robot line breaking tool and a control method, the 10kV distribution network robot line breaking tool comprises a rotary cutter, a fixed cutter and a cutter driving assembly, the rotary cutter is hinged to the fixed cutter, the cutter driving assembly comprises a cutter motor and a cutter driving wheel, the cutter motor drives the cutter driving wheel, the edge of the rotary cutter is provided with gear teeth, and the cutter driving wheel drives the rotary cutter to rotate. The cutter driving wheel is in meshing transmission with the rotary cutter and comprises bristles, the bristles make contact with the gear teeth, and the axial direction of the bristles is parallel to the tooth surfaces of the gear teeth. According to the invention, the brush hairs are utilized to thoroughly sweep away the insulating skin scraps, the aluminum scraps, the steel scraps and other scraps falling on the gear teeth of the rotary cutter, and the failure of meshing transmission between the rotary cutter and the cutter driving wheel is avoided.

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 a preparation method of a transmission shifting fork assembly, and relates to the technical field of mechanical part production methods. The method comprises the following steps of selecting raw materials, preparing a shifting fork body, preparing shifting fork legs, polishing to remove burrs, assembling parts, and conducting cleaning and inspection. By adoption of the method, the shifting fork body and the shifting fork legs which are made of different materials are adopted, a novel shifting fork product is manufactured in a split assembling mode, the shifting fork product can be completely held and clamped in the horizontal direction and the vertical direction under the rotating working condition, and meanwhile the shifting fork body and the shifting fork legs are matched with the assembling end face position between the shifting fork body and the shifting fork legs, and the torsional moment of a half-thread stud and a chuck in the rotating process of the shifting fork is greatly reduced, so that the overall structural strength of the shifting fork is guaranteed, and the purpose of reducing the weight of the shifting fork is achieved on the premise that the structural strength is guaranteed. A positioning mechanism and a rotary clamping mechanism are arranged on a rack, and automatic assembly of the shifting fork body and the shifting fork legs can be achieved under driving of a first driving motor and a second driving motor.

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.

The invention relates to vehicle dynamic information feedback equipment based on Internet-of-vehicles. The vehicle dynamic information feedback equipment comprises a box body, a cavity is formed in the box body, fixing blocks are fixed to the front inner wall and the rear inner wall of the cavity, a fixing box is fixed to the upper sides of the fixing blocks, and a fixing cavity with an upward opening is formed in the fixing box. According to the equipment, a GPS can be stably fixed on the vehicle. The cooling fan can effectively cool, remove dust and rotate coaxially and reversely, torque generated by rotation can be counteracted, meanwhile, the cooling fan has the function of removing dust of a filter screen, automatic closing can be achieved under the condition that an automobile is flooded, water flooding is prevented, damage is reduced due to a damping device, the vehicle dynamic information feedback equipment can move to the outer side of the box body under the condition that signals are weak, therefore the signals are enhanced. And the device can realize effective dust prevention, heat dissipation, water prevention and shock absorption.

The invention discloses a servo motor with a protection structure, and relates to the technical field of driving motors, and the servo motor comprises a motor body assembly, a heat dissipation and cooling assembly and a rotation speed detection assembly. The heat dissipation cooling assembly comprises a rear-end inner ratchet wheel, a rear-end outer ratchet wheel, a front-end inner ratchet wheel, a front-end outer ratchet wheel, a rear-end gear set, an outer-end gear ring, a large gear and a rear-end heat dissipation fan, the rear-end gear set, the outer-end gear ring and the large gear are all rotationally installed on the rear machine base, and the rear-end inner ratchet wheel and the front-end inner ratchet wheel are fixedly installed on a motor shaft in a stacked mode; the rear-end inner ratchet wheel is meshed with the rear-end outer ratchet wheel, the input end of the rear-end gear set is in gear fit with the rear-end outer ratchet wheel, and the output end of the rear-end gear set is in gear fit with the outer-end gear ring; the rear-end cooling fan is fixedly connected with the outer-end gear ring and can rotate together with the outer-end gear ring, the temperature of the motor in an actual power environment is reduced through rotation of the rear-end cooling fan, the demagnetization threshold value is increased, and demagnetization is reduced.