36results about How to "Increase the wheelbase" patented technology

An all-terrain vehicle (ATV) includes a frame and a pair of front and rear wheels suspended from the frame. A straddle-type seat has a main portion and a secondary portion to accommodate a driver and a passenger. The wheelbase of the ATV is increased in length (compared to conventional ATVs) so as to increase stability and comfort for the driver, and/or to accommodate a passenger behind the driver. The passenger and secondary seat portion are disposed in front of the rear wheel axis and moved closer to the center of the wheelbase. Moreover, the combined center or gravity of the ATV, rider, and passenger is moved closer to the center of the wheelbase to improve stability, comfort and/or safety. The driver and passenger each have sufficient space to actively position themselves without significantly interfering with each other.

The invention discloses a bridge dynamic weighing method based on the long-gauge fiber grating sensing technology and a bridge dynamic weighing system thereof. The dynamic weighing method comprises the steps that long-gauge sensors are arranged: the long-gauge sensors are arranged on the initial entering and final exiting side span units of a vehicle and the part between the two side span units along the length direction of the bridge; load condition monitoring of a vehicle to be identified and load condition monitoring of a standard vehicle are performed: the vehicle of which various parameters are known acts as the standard vehicle, the strain response data of each sensing unit under the load condition of the standard vehicle are acquired, and the maximum strain of each sensing unit only caused by the axle load is calculated; and vehicle load identification under the load condition of the vehicle to be identified is performed. The maximum bending strain value only caused by the axle load under the load condition of the standard vehicle is analyzed and compared with the corresponding value under the load condition of the standard value so that the total weight of the driving load on the bridge and the load of each vehicle can be identified, the overload vehicle can be effectively pre-warned and thus damage to the big long-span bridges can be avoided.

A vehicle includes an electric motor disposed downward of a battery. The vehicle is provided with a motor control unit configured to receive electrical power from the battery and to supply the electrical power of the battery to the electric motor, and a case that accommodates the motor control unit. The case is positioned downward of the battery and forward of the electric motor, and is arranged in a posture in which the length in the front-rear direction of an accommodating portion in the case is less than the vertical height thereof in a side view of the vehicle body. Accordingly, a compact longitudinal layout of the electric motor and the motor control unit that controls the electric motor is achieved.

The invention discloses a split assembly and disassembly type device for measuring an automobile four-wheel aligner, which aims at solving the problems of the prior art that the integral size of equipment is large, the processing cost is higher, the waste on leveling time of the equipment is caused, the assembly difficultly is large, and the like. The device comprises a toe-in zero point inspection frame, a front bench inspection part and a back bench inspection part, wherein the toe-in zero point inspection frame comprises a front transverse beam, a back transverse beam, a left longitudinal beam, a right longitudinal beam, a left front support leg, a right front support leg, a left back support leg and a right back support leg, the two ends of the front transverse beam and the back transverse beam are connected with the front ends and back ends of the left longitudinal beam and the right longitudinal beam to form a plane rectangular framework, the top end surfaces of the left front support leg, the right front support leg, the left back support leg and the right back support leg which are vertically arranged and the bottoms of the four corners of the rectangular framework are fixed by bolts, the front bench inspection part is arranged at the front ends of the left longitudinal beam and the right longitudinal beam of the toe-in zero point inspection frame and are fixed by bolts, and the back bench inspection part is arranged at the back ends of the left longitudinal beam and the right longitudinal beam of the toe-in zero point inspection frame and are fixed by bolts.

The invention discloses a lane departure active deviation rectifying method based on torque control. The method comprises the steps of enabling an active deviation rectifying system to enter an activated state when meeting an activation condition, and enabling the active deviation rectifying system to obtain road information and vehicle parameter information in real time; calculating a feed-forward torque based on the acquired information; determining a target yaw velocity of vehicle deviation rectification based on the obtained information, and calculating a feedback torque according to the target yaw velocity; calculating compensation torque according to the feed-forward torque, the feedback torque and the steering wheel torque, and inputting the compensation torque into the steering system to complete torque deviation rectifying control. According to the invention, a feed-forward and feedback control scheme is adopted, target parameters can be quickly followed, the lane departure deviation rectifying action of the vehicle is completed, the system is stable, the operand is low, and the memory consumption of a controller is low; by taking the yaw velocity of the vehicle as a target control value, a good deviation rectifying effect is guaranteed when the vehicle runs on a curve.

The invention discloses a water-land-air triphibian robot which comprises a land driving module, a water surface driving module, an aerial flight module, an electric control and sensing module, an undercarriage module and a water surface floating module. Omnidirectional movement of the robot on land is achieved in a front wheel steering and rear wheel driving mode. Lifting and steering of an ROV underwater propeller are achieved in a double-steering-engine control mode, the ROV underwater propeller is used for pushing the propeller to rotate at a high speed, and therefore the robot can move inall directions on water. A telescopic four-rotor aerial flight module is adopted to realize the flight function of the robot; a nuc small computer is used for issuing control instructions to an amphibious module control panel, a flight control panel and the undercarriage module, and full-autonomous movement of the robot is achieved. The robot has the advantages of being compact in structure, complete in function, high in stability, high in flexibility, high in information collecting capacity and the like, and the requirement for multi-mode movement of the robot under the current robot technology development background can be well met.

Before, vehicles with independent suspensions could not alter the tire's positions. Modifications or use of aftermarket parts were needed for the vehicle to perform under more extreme conditions such as gaining clearance for off road use or squatting down low for a wide, racy stance. My invention will allow many scenarios of suspension types to be used on a single vehicle, with a single suspension system. The control arms are fixable in length allowing many variances in ride height, stance and wheelbase. This will broaden the vehicle's purpose and capabilities and will make many aftermarket upgrades to the vehicle unnecessary.

The invention discloses a single-wheel cart device with stirring and speed reducing functions. The single-wheel cart device comprises a carrying basin, wherein an L-shaped plate is arranged at the lower side of the carrying basin, the inner wall of the vertical section of the L-shaped plate is connected to the carrying basin in a sliding manner, and a carrying cavity with an opening in the upper side is formed in the carrying basin. According to the single-wheel cart device, the principle of a monocycle is mainly utilized, and meanwhile, a rolling wheel of the cart is used for providing powerto achieve the stirring effect; the transmission direction can be manually changed, so that the stirring speed can be improved under the condition that the speed of the stirring speed is not changed;the device can automatically descend when the weight is large, and meanwhile, auxiliary wheels at the two sides touch the ground, and also the axle distance is increased, so that the transport is morestable, the automatic speed reduction can be achieved when rotation is too fast under the condition of rotation, accidents are prevented; and springs are used for damping at multiple positions, so that manpower consumption is reduced.

The invention discloses a bestriding type of dual-wheel motorcycle. The frame of the motorcycle consists of two parallel upper longitudinal beams and two parallel lower transverse bent beams, which are connected to the main tube of the motorcycle head. The rear end of the frame is ream jointed to one flat triangle fork through the flat folk spindle. The upper longitudinal beams have a rear section which gradually declined downward for the purpose of reducing the height of the motorcycle seat. The upper inclined forked tube of the flat triangle fork extends itself along the extending line of the rear section of the upper longitudinal beam. The rear shock absorber, which is horizontally mounted, is parallel with the rear section of the upper longitudinal beam and is located below the seat. The front end and the rear end of the rear shock absorber are beam jointed with the upper longitudinal beam and the flat triangle fork respectively. An air filter is available near the point where the upper longitudinal beam, the lower bent beam connected with the main tube of the motorcycle head. Below this point and on the lower bent beam, a water cooler is equipped. A water-cooling motor is mounted on the suspending device equipped on the frame. The front pedals are mounted on the front turning points, which are near the lower end of the lower bent beam. The two pedals extrude out of the frame on both the right side and left side. These pedals can reduce the height of the seat and improve the shock-absorbing effect and comfort in driving.

The invention discloses an automotive longitudinal and transverse arm independent suspension system. The system comprises a front suspension system and a back suspension, the front suspension system is composed of first cantilevers which are located on the left side and the right side of the front of a vehicle, and the back suspension system is composed of second cantilevers which are located on the left side and the right side of the back of the vehicle; the first cantilevers and the second cantilevers each comprises a cantilever main body, a cantilever shaft sleeve, a worm gear assembly fixing base, a shock absorber fixing portion and a transverse stable rod fixing portion; each first cantilever is further provided with an upper steering ball head fixing portion, a lower steering ball head fixing portion and a steering interim swing arm fixing shaft sleeve; each second cantilever is further provided with a back wheel hub support fixing portion. The back suspension system is free of steering; if servo motors are installed on the worm gear assembly fixing bases, free adjustment can be achieved when the vehicle body height is different from the road height, and stepless automated control requirements can be achieved under control of a four-wheel height sensor, a gyroscope and an ECU. Accordingly, the system not only has the comfort of limousine, but also has the high trafficability of off-road vehicles.

The invention discloses a robot with a variable wheelbase and capable of being lifted. The robot comprises a robot platform, driving wheels, driving wheel connecting rods, rear swinging rods, upper swinging motors, upper swinging rods, assisting motors, front swinging connecting rods, steering engines, steering wheels, lower connecting rods, swinging tooth grooves, lower swinging motors, L-shaped steering connecting rods and steering wheel connecting rods. According to the robot disclosed by the invention, the wheelbase can be enlarged, and the gravity center can be reduced, so that the robot can stably passes through a complex road condition, and stability and reliability of quickly passing through a complex road condition of a wheel type robot are improved; through adjusting the wheelbase of the robot and lifting the gravity center, obstacles are safely passed; and in the whole process of changing the wheelbase, two motors are adopted for providing power, so that total weight is reduced, and structure is compact.

The invention discloses a mooring unmanned aerial vehicle and an airborne end of the unmanned aerial vehicle. The unmanned aerial vehicle airborne end comprises a vehicle body and a plurality of vehicle arms connected to the vehicle body. The vehicle arms are connected with rotor wings, each vehicle arm comprises a first arm body and a second arm body connected to the first arm body which are sequentially arranged in the set linear direction, the first arm bodies are fixed to the vehicle body, the second arm bodies are connected to the output ends of the length adjusters, and the length adjusters output movement in the set linear direction so as to drive the second arms to move relative to the first arm bodies. The vehicle arms are arranged to be of a two-section structure, the total length of the vehicle arms can be adjusted by adjusting the relative positions of the arm bodies, the variable wheelbase design of the vehicle-mounted end of the unmanned aerial vehicle is achieved, the unmanned aerial vehicle can adjust the needed wheelbase according to different wind power environments, and the stability of the unmanned aerial vehicle is enhanced.

The invention relates to a patient rehabilitation wheelchair with an adjustable wheel inclination angle, and belongs to the field of medical instruments. The patient rehabilitation wheelchair with the adjustable wheel inclination angle comprises two longitudinal beams which are fixedly connected through a cross beam, a seat is fixed on the cross beam, front fork frames are hinged below the front portions of the two longitudinal beams respectively, rear fork frames are hinged below the rear portions of the two longitudinal beams respectively, front wheels are installed at the lower ends of the front fork frames, and rear wheels are installed at the lower ends of the rear fork frames. The whole gravity center can be lowered during climbing and stair climbing, the attachment area of tires and steps can be increased in a deformation mode, it can be guaranteed that enough friction force exists between the tires and the steps during stair climbing, slipping is not likely to happen, meanwhile, the axle distance can be adjusted, the span is increased, stability is improved, backward turning is not likely to happen, safety is high, and the wheelchair is suitable for application and popularization.

The invention discloses a double-shaft type pivot mechanism and an electronic device comprising the same. The double-shaft type pivot mechanism comprises a positioning plate, a first main rotating shaft, a second main rotating shaft, a pushing and abutting cam and a linkage assembly. The positioning plate is provided with a first main rotating shaft through hole and a second main rotating shaft through hole, the first main rotating shaft is movably arranged in the first main rotating shaft through hole in a penetrating manner, the second main rotating shaft is pivotally arranged in the second main rotating shaft through hole in a penetrating manner, the pushing and abutting cam is fixed on the second main rotating shaft, and the linkage assembly is connected to the first main rotating shaft and is in linkage with the pushing and abutting cam. When the second main rotating shaft pivots, the pushing and abutting cam pushes and abuts against the linkage assembly, the linkage assembly drives the first main rotating shaft to be relatively away from the second main rotating shaft through hole, and therefore a shaft distance between the first main rotating shaft and the second main rotating shaft is increased. According to the mechanism, an overall thickness of the device is reduced, and the visual effect originally to be shown by a notebook computer is not changed.

The invention provides a variable wheel base unmanned aerial vehicle mechanism with a fire-extinguishing launcher. The unmanned aerial vehicle mechanism comprises a transmission assembly, an engine arm assembly, a launching assembly and a wing assembly, wherein the engine arm assembly comprises a curved bar, an upper joint, a carbon tube, a connecting rod, a lower joint, a Y-shaped connecting rod and a round nut; the curved bar, the upper joint, the carbon tube, the connecting rod, the lower joint and the Y-shaped connecting rod form a parallelogram; and the height of the parallelogram is changed under drive of external force, so that the wings are driven to always swing up and down parallel to the horizontal plane.

The invention relates to the technical field of forklifts, solves the problem that in the prior art, when a pallet fork forks goods and ascends to the position, the forklift tilts forwards or even tilts over, and particularly discloses a forklift structure with adjustable axle distance, and the forklift structure comprises a chassis system, a portal frame system and a driving system. When the fork ascends, especially when the fork picks up the load, the fork ascends and the center of mass ascends, when the center of mass ascends in the front part of the forklift, it is easy to cause the forklift to tilt forward or overturn, thus when the fork ascends to a first preset height, the front wheel is controlled to move forwards through the first driving assembly, so that the axle distance between the front wheel and the rear wheel is adjusted, the front supporting point is moved forwards, and the forklift is prevented from leaning forward. Besides,due to the fact that the fork ascends at the moment, the front wheels move forwards and do not interfere with the fork located at the low position.

The invention discloses a chair back curvature adjusting device. The device comprises a flexible chair back, a first retaining mechanism, a second retaining mechanism, a support for supporting the chair back and at least one locking mechanism, the first retaining mechanism is connected between a first position of the chair back and the support, and the second retaining mechanism is connected between a second position of the chair back and the support, so that the chair back is retained on the support; the second holding mechanism is provided with a second connecting part and a second movable part; the second movable part can freely slide on the support; the second movable part is fixed on the support through the locking mechanism, the second connecting part consists of a fixed part connected to the second movable part, an extending part connected to the chair back and a positioning mechanism connected between the extending part and the fixed part, and the position of the extending partcan be axially changed relative to the fixed part; therefore, by means of the movement of the extending part, the axle distance of the second connecting part is prolonged, and the curvature of the surface of the chair back is changed to be used as compensation for curvature adjustment.

The invention discloses an all-terrain shock-proof suspension type composite tracked robot moving platform which comprises a plate frame and track walking mechanisms fixed to the two sides of the plate frame. The bearing wheels on the moving platform of the robot are installed on the plate frame in a floatable mode through the Kristile suspension frame, the impact on the robot body caused by the uneven road surface can be well reduced, and good buffering and damping performance is achieved. The chain wheels at the two ends of the crawler belt play a role in driving and positioning, in addition, the chain wheels at the two ends are suspended on the disc frame through two first suspension arms arranged in a splayed shape, the upper ends of the first suspension arms are rotationally connected with the disc frame, the lower ends of the first suspension arms are elastically suspended on the upper top frame through first elastic bodies, and after assembly, the first elastic bodies are in a stretching state; through the structure, the two chain wheels play a role in tensioning the crawler belt. The front and back axle distance between the two chain wheels can be automatically adjusted according to the terrain and the platform load, through real-time adjustment, it is guaranteed that the caterpillar band has the tensioning force and does not disengage, and it is guaranteed that the robot works effectively and stably.