115results about How to "Shortened wheelbase" patented technology

The invention provides an unmanned aerial vehicle cruising and monitoring system for forest fire. The weight of the unmanned aerial vehicle is reduced, flight time is prolonged, an unmanned aerial vehicle cruising range is enlarged, route planning is carried out for fire monitoring, and an unmanned aerial vehicle flight control system is combined with a geographic information system. The route planning not only guarantees monitoring quality and monitoring full coverage but also considers the hardware parameters and the flight safety of the cruising unmanned aerial vehicle, a rotary head carries a thermal infrared imager and a colorful high-definition camera, the thermal infrared characteristics of the image of the forest fire are fully utilized, and an automatic monitoring and identification method for forest fire information is designed. Even if the forest fire monitoring distance of the unmanned aerial vehicle is long, fire characteristics can be accurately captured. A colorful high-definition image is compressed and transmitted back to a ground command post, a high-definition fire video image can be quickly transmitted to the ground, a fire position can be accurately reported, so that convenience is brought to the ground command post in accurately judging a fire situation and organizing people to fight the fire, and precious fire-fighting time is saved.

In a vehicle seat having a seat back and a seat cushion that are placed in one of a normal position and a reclining position that is more reclined than the normal position, a link mechanism is operable to change the positions of the seat back and the seat cushion by moving the seat back and the seat cushion in relation to each other, so that a back contact point of the seat back, where a predetermined portion of the back of the seated person contacts the seat back, contacts the predetermined portion of the back of the seated person in both the normal position and the reclining position, and so that an ischial contact point of the seat cushion, where a tuber-of-ischium of the seated person contacts the seat cushion, contacts the tuber-of-ischium of the seated person in both the normal position and the reclining position.

A suspended articulated front axle for vehicles, in particular farm tractors, wherein each axle shaft has at least one portion whose longitudinal axis of symmetry slopes by a sweep-back angle with respect to a line perpendicular to the longitudinal axis of symmetry of the vehicle. The sweep-back angle is such that the outer end of the sloping portion is located further back than the inner end of the portion in the common forward traveling direction of the vehicle.

An all terrain adapter for a wheelchair that removably clamps onto the foot support of the wheelchair and supports a relatively large diameter, slightly inclined swivelling nose gear wheel at an extended distance from the foot support to stabilize the wheelchair when it is being pushed over soft or uneven surfaces and which swivels around when the wheelchair is moved forward to lift the front wheels of the wheelchair clear of the ground.

The invention relates to a flexible direct-drive type steering rack, which uses a flexible beam to enable a structure to be flexible. Left and right lateral racks easily do relative nodding movement, so as to be applicable to a triangular pit with a larger rail. The structure is flexible so that a series of suspension can be simplified to a very thin layer of rubber cushion, and the production cost is reduced; an elasticity transmission device is elastically suspended through a permanent magnet motor, so that the torque can be transmitted, the transmission efficiency can be improved, and the weight of a transmission mechanism can be reduced; a traction force and a braking force can be directly transmitted to a car body instead of the structure of the steering rack, and the stress condition of the structure of the steering rack is optimized; meanwhile, the length of a traction rod is not limited by the structure, so that the traction rod can be longer, the secondary addition rigidity brought by the traction rod can be reduced, and the riding comfort degree of a vehicle can be improved. A motor is suspended between wheel pairs, so that a shaft distance can be reduced. Therefore, the steering rack not only can have higher critical speed through a smaller curve, but also has good submissiveness on route irregularity.

A motor hold shaft installation type permanent-magnetic direct-drive bogie comprises two frame devices, two permanent-magnetic synchronous traction motors, two triangular elastic supporting devices and four wheel pair box devices, wherein two adjacent front and rear wheel pair box devices are connected through the frame devices, two wheels on the left and right symmetric sides are connected through an axel, the permanent-magnetic synchronous traction motors and the axle are integrated through rotors, and driving is realized by rotating the axel; the two frame devices are symmetrically located on the left side and the right side of the advancing direction of a railway vehicle and are connected by double traction rod devices, and the triangular elastic supporting devices are connected with the permanent-magnetic synchronous traction motors and the double traction rod devices. According to the motor hold shaft installation type permanent-magnetic direct-drive bogie, the permanent-magnetic synchronous traction motors are adopted, rotor excitation power is saved, the motor efficiency is improved, the transmission efficiency is improved further after a gear box device is saved, the wheel base of the bogie is shortened, and the motor hold shaft installation type permanent-magnetic direct-drive bogie has the advantages that energy is saved, environment is protected and the small curve through capacity is high, and can be widely applied to various urban railway traffic vehicles.

An all terrain adapter for a wheelchair that removably clamps onto the foot support of the wheelchair and supports a relatively large diameter, slightly inclined swivelling nose gear wheel at an extended distance from the foot support to stabilize the wheelchair when it is being pushed over soft or uneven surfaces and which swivels around when the wheelchair is moved forward to lift the front wheels of the wheelchair clear of the ground.

The invention relates to a direct-driving type bogie structure. A permanent magnetic motor is elastically suspended by an elastic driving device, so that torque can be transferred, the transmission efficiency is improved, the weight of a driving mechanism is reduced; and traction force and braking force are directly transmitted to a vehicle body and are not transmitted through a bogie frame, so that the stressing condition of the a bogie frame is optimized, the length of a traction pull rod is not limited by the bogie frame structure, the traction pull rod can be longer, diallel additional rigidity caused by the traction pull rod is reduced, and the taking comfort of a vehicle is improved. The motor is suspended between wheel pairs, so that the axle distance is reduced, the bogie can pass a shorter curve, has higher critical speed, and has good submissiveness to unevenness of a road.

The invention provides a rail vehicle wheel pair motor direct driving system. The system comprises a driving motor, a soft starter and two elastic couplings, and the soft starter is in controlled electrical connection with the driving motor; the driving motor is a permanent magnet synchronous motor with a hollow rotating shaft, the axle of a rail vehicle traverses through the hollow shaft of the driving motor, and then two ends of the axle are fixedly connected with a wheel pair; each of the elastic couplings comprises a driving plate, a pull rod, a rubber ball joint, a driving pin and a connecting bolt, the driving plate is connected with the pull rod through the driving pin, and the rubber ball joint is fixedly arranged in the pull rod; the elastic couplings are fixedly connected with vehicle wheels by allowing the connecting bolts to traverse through the rubber ball joints; and two ends of the rotating shaft of the driving motor are in transmission connection with the elastic couplings respectively. The rail vehicle wheel pair motor direct driving system effectively saves the cost, reduces the noise, improves the transmission efficiency and improves the curve negotiating ability of a bogie; and compared with asynchronous motors with a same capacity, the driving motor has the advantages of greatly reduced size and mass, and obvious energy saving effect.

A utility vehicle with adjustable wheel assemblies to accommodate different weight attachments selectively engageable with the vehicle. Adjustment assemblies are provided to engage each of the front wheel assemblies. Each adjustment assembly includes a guide plate, a first arm of a first length and a second arm of a second length. The operator will select the appropriate one of the first and second arms to secure to the guide plate and to one of the front wheel assemblies. The guide plates include holes therein for locking the selected one of the arms in a particular orientation. This is accomplished by inserting a pin through an aperture in the selected first or second arm and one of the holes in the guide plate. A first end of the selected first or second arm is secured to the guide plate and a second end thereof is engaged with the associated wheel assembly.

A monorail tramcar rail using a rising and falling parallel turnout comprises a connected floor (optional), a monorail trunk rail, a turnout fixed root, a turnout straight-moving rising and falling moving body, a straight-moving trunk rail fixed joint, a turnout turning rising and falling moving body and a turning trunk rail fixed joint. During forking (combination can be achieved in the opposite direction), the turnout straight-moving rising and falling moving body is raised out of the ground, and the turnout turning rising and falling moving body falls into the ground in parallel, so that the turnout is in the straight moving structure; and on the contrary, when the turnout straight-moving rising and falling moving body falls into the ground and the turnout turning rising and falling moving body is raised out of the ground in parallel alternately, the turnout is in the turning structure. The rail turnout alternation is simplified through a rising and falling parallel alternate rail connection method, so that the defects that train intervals are limited due to the fact that straddle type monorail turnouts are complicated in structure and time-consuming to transport are effectively overcome. By the aid of the original design of the 'monorail trunk rail' structure, the special clamping-moving requirements of ultra-high-speed integrated left and right horizontal clamping-moving wheel groups are met.

The invention discloses a toothed rail car bogie. The toothed rail car bogie comprises a framework and two groups of wheel pairs, wherein the two groups of wheel pairs are mounted on the framework; one group of the two groups of wheel pairs is driving wheel pairs; the other group is non-driven wheel pairs; the driving wheel pairs comprise driving shafts and wheels, wherein the wheels are connectedwith the driving shafts through bearings; the wheels independently move relative to the driving shafts; toothed rail wheels are mounted on the driving shafts in the form of interference fit; and a driving device used for driving the driving shaft to rotate is connected to the framework. The toothed rail car bogie has the advantages that the deadweight of the vehicle can be effectively reduced, the structure of the bogie can be simplified, the performance of the bogie can be improved, the curve trafficability of the vehicle can be improved and so on.

The invention discloses a double-layer and eight-rotor-wing aircraft, and relates to the technical field of unmanned aerial vehicles. The double-layer and eight-rotor-wing aircraft comprises an aircraft body, and eight rotor wing components mounted on the aircraft body; angles between the adjacent components are 45 degrees; each rotor wing component includes a motor suspension arm, a brushless motor and a rotor wing; the rotor wings are connected with output ends of the brushless motors; the brushless motors are mounted at the tail ends of the motor suspension arms; mounting holes are formed in the aircraft body; the other tail ends of the motor suspension arms penetrate through the mounting holes, and are clamped on the aircraft body through mechanisms on two sides of the mounting holes; the mounting directions of the rotor wing components are opposite to the mounting directions of the adjacent rotor wing components; if the motor of one rotor wing component is upward, the motors of the adjacent components are downward, and vice versa; and the rotor wings of the adjacent rotor wing components are slightly overlapped, and are opposite in rotating directions. As eight rotor wings are mounted on the unmanned aerial vehicle, the lift of the aircraft is increased; and through double-layer arrangement of the rotor wings, the size of the aircraft is smaller, and the size of the aircraft is reduced.

A motorcycle for supporting a seated rider straddling a saddle atop a frame and above a motor has an improved torsion acting shock absorbing mount for the cantilevered shock absorbing support of at least one of the motorcycle wheels from the frame. In a preferred embodiment, the torsion acting shock absorber includes a square sectioned metal tube, a correspondingly square sectioned metal shaft, and confined compressible rubber rods acting there between. A shock absorbing suspension is disclosed for both the front steered wheel and the rear driven wheel.

A fuel system for a vehicle is provided. The fuel system is configured to couple to a frame rail of the vehicle. A fuel system frame assembly of the fuel system is configured to couple with the frame rail directly or with another component that is coupled, directly or indirectly, with the frame rail. A cowling of the fuel system can include a fuel pressure vessel. The fuel pressure vessel configured to be placed within and supported by the fuel system frame assembly. The fuel system is configured to enhance component arrangement efficiency when mounted to a vehicle frame rail.

An exhaust system for a motorcycle includes exhaust pipes extending from exhaust ports of an engine, a first muffler chamber for receiving the exhaust pipes, a second muffler chamber arranged parallel to and operatively connected with the first muffler chamber, and a silencer disposed in the second muffler chamber. The exhaust system is distributively arranged in a vehicle width direction such that the first muffler chamber is situated on a left side of a center line of the motorcycle defined along longitudinal direction of the motorcycle, and the second muffler chamber is situated on a right side of the center line. The first and second muffler chambers are disposed at a position below the engine. The exhaust gas from the engine is emitted outside the engine via, in sequence, the exhaust pipes, the first and second muffler chambers and the silencer.

The invention discloses an integral active electric power-assisted steering mechanical structure. The structure comprises an electric power-assisted steering system, a steering system gear ratio system and a back wheel steering system, wherein the electric power-assisted steering system and the steering system gear ratio system are realized by a steering system variable-gear ratio electric power-assisted steering system; the back wheel steering system is a special device system for supplying steering force to a back wheel; the steering system variable-gear ratio electric power-assisted steering system is realized by an electronically-controlled harmonic gear transmission between a steering wheel and a lower transmission shaft; and the back wheel steering system consists of a support shaft ring, an outer shell, a motor stator coil, a permanent magnet rotor, a motor angle sensor, a central hollow shaft, a recirculating ball retarding mechanism, a lock sleeve and a rack shaft. In a steering process, an adjusting motor and a power assisting motor are controlled flexibly and compensate for each other, so that steering sensitivity, portability and operation stability are combined perfectly and operation performance and safety performance are enhanced.

The invention discloses a Bo steering frame used for an electric shunting locomotive. The Bo steering frame comprises a framework, two wheel pairs and two sets of basic braking devices used for braking the wheel pairs. The framework comprises two parallel framework side beams and three framework transverse beams used for enabling the framework side beams to be connected into a whole. The three framework transverse beams comprise two end portion transverse beams located on the end portions of the two ends of the framework side beams and one middle transverse beam located in the middle of the transverse side beams, the framework side beams and the framework transverse beams define a first empty position and a second empty position in an enclosed mode, the two wheel pairs are installed in the first empty position and the second empty position respectively through axle boxes, and the two sets of the basic braking devices are installed on the two end portion transverse beams respectively. Compared with a current Bo steering frame, the axial distance of the Bo steering frame is smaller, and accordingly a curve with a smaller radius can pass the steering frame and the developing requirements of an existing shunting locomotive are met.

The invention discloses a double-deck storage battery box body which comprises a main body bracket, an upper fixed plate and a lower fixed plate, wherein batteries are placed on the upper fixed plate and the lower fixed plate respectively; a sliding plate is fixed on the inner side of the bottom end of the main body bracket; a plurality of holes are formed in the upper surface of the sliding plate, balls are mounted in the holes, and the lower surface of the lower fixed plate is in contact with the balls to enable the lower fixed plate to adopt a withdrawable structure; the fixed sleeve of a regulating mechanism is fixedly connected onto the bottom of the lower fixed plate, and the two ends of an adjustment lever are fixed onto a front end beam and a rear end beam; a limiting plate is fixed at the front end beam of the main body bracket and positioned at the front end of the lower fixed plate; a baffle plate is fixed on the lateral surface of the support frame of the main body frame. According to the invention, the arrangement of the lead-acid storage batteries for starting is changed to a stacking manner from a parallel manner, so that the arrangement space is effectively saved, the arrangement flexibility is improved, the distance between shafts is shortened at the same time to fulfill the purpose of light weight, and the center of gravity of a storage battery box body assembly is dispersed to reduce the bending moment to a fixed point so as to reduce the use of bolts.

A utility vehicle with adjustable wheel assemblies to accommodate different weight attachments selectively engageable with the vehicle. Adjustment assemblies are provided to engage each of the front wheel assemblies. Each adjustment assembly includes a guide plate, a first arm of a first length and a second arm of a second length. The operator will select the appropriate one of the first and second arms to secure to the guide plate and to one of the front wheel assemblies. The guide plates include holes therein for locking the selected one of the arms in a particular orientation. This is accomplished by inserting a pin through an aperture in the selected first or second arm and one of the holes in the guide plate. A first end of the selected first or second arm is secured to the guide plate and a second end thereof is engaged with the associated wheel assembly.

In a vehicle seat having a seat back and a seat cushion that are placed in one of a normal position and a reclining position that is more reclined than the normal position, a link mechanism is operable to change the positions of the seat back and the seat cushion by moving the seat back and the seat cushion in relation to each other, so that a back contact point of the seat back, where a predetermined portion of the back of the seated person contacts the seat back, contacts the predetermined portion of the back of the seated person in both the normal position and the reclining position, and so that an ischial contact point of the seat cushion, where a tuber-of-ischium of the seated person contacts the seat cushion, contacts the tuber-of-ischium of the seated person in both the normal position and the reclining position.

The present invention relates to an engine structure of a motor cycle. The engine is arranged on the rear of a descending pipe arranged on a cycle frame. The engine comprises a crank case, a cylinder body and a cylinder head, wherein the crank case consists of a left crank case and a right crank case, a crank, a main shaft, an output shaft and an engine fuel pump are arranged in the crank case, and the crank is connected to a piston by a connecting rod; the connecting rod and the piston are arranged in the cylinder body, and the center of the crank does not penetrate through the center of the cylinder body; a cam shaft, a rocker arm, an air inlet, an air outlet and a combustion chamber are arranged on the cylinder head; the cylinder body shifts toward the rear of the cycle body, the central line of the cylinder body shifted is between the center of the crank and the center of the main shaft, and the crank rotates clockwise. Thus, part configuration space before the engine can be effectively increased, and side friction produced when the piston runs is reduced. Meanwhile, the purpose in conveniently arranging an exhaust pipe is achieved.

The invention relates to a transmission unit with a planetary gearing system, optionally for bicycles or for trailer bicycles. The transmission unit, which is developed for driving small rear wheels, contains a planetary gearing system with a ring gear (7) which is connected to the bicycle frame (9), a planet carrier (3b) with planet gears (6a, 6b), and one or two sun gears (10, 11). The transmission unit further contains a rear wheel shaft (12) which is coaxial with respect to the sun gears or a rear wheel shaft which has the aforementioned sun gear, and the transmission unit contains a driving mechanism (3) which is coupled to the planet carrier or a driving mechanism (3) which is designed as a planet carrier (3b). The invention is characterized in that a bearing (35) internally bears the rear wheel shaft (12) with respect to the bicycle frame (9) from a radial perspective and between the seat of the rear wheel (40) and the planetary gearing system from an axial perspective, wherein the planetary gearing system and an upstream gear unit, for example a chain drive (1, 2), lie on the same side of the bicycle frame. Thus, upstream belt drives, short distances between the rear wheel and the bottom bracket, and single-arm suspensions in the bicycle frame can be implemented. The transmission unit provides one or two gear ratios.

The invention discloses a railway vehicle bogie. The bogie is arranged in an internal axle box manner, and frameworks are supported on the inner sides of wheel sets, so the axle length is effectivelyshortened, the unsprung mass and dead weight of the bogie are reduced, and the curve passing performance is improved; the arrangement of downward concave sections of side beams and the connection of cross beams to the downward concave sections can effectively reduce the height of the gravity center of the bogie and reserve a high longitudinal space for a vehicle body, and web plates and cover plates can be adopted to enhance the strength of the side beams and improve the bearing capacity of the side beams; two primary positioning components are adopted for positioning, so that the axle distance of the bogie can be further reduced; and a secondary suspension device is additionally arranged to improve the vertical and transverse performances of the bogie and increase the running speed of thebogie, and secondary spring sets are arranged in a centralized mode to reduce torsional deformation of the secondary spring assemblies. The bogie is compact and reasonable in structural arrangement,reliable in performances and beneficial to improving the running stability, stability and running speed of a vehicle.

The invention provides a motorcycle having an installation space for accessories between an engine and a front wheel by arranging a crank case of the engine adjacent to a luggage box in the vertical direction without increasing the height of a seat. The rear end of a main frame member 11 is terminated near the front end of a bottom wall 3b of the luggage box 3, and a rear frame member 12 is provided with a rear frame front portion connected to the rear end of the main frame member 11 and extending to an approximately horizontal direction and a rear frame rear portion bent upward from the rear end of the rear frame front portion along the front face of a rear wheel Wr. The bottom wall 3b of the luggage box 3 for storing a helmet H in approximately horizontal attitude with its lower opening face turned down is arranged along the upper face of the rear frame front portion, and the crank case 28 of the engine E is arranged adjacent to the lower face of the bottom wall 3b.

The invention provides an efficient folding electric scooter which comprises a front wheel and a rear wheel and further comprises a handlebar assembly, a scooter frame and a scooter base; the handlebar assembly is connected with the scooter frame through a connecting base, and the scooter frame is connected with the scooter base through a connecting rod set. Large-amplitude efficient folding of the electric scooter is achieved through two folding steps so that the portable effect of the electric scooter can be improved, the storage space can be saved, and the electric scooter is provided withtwo dragging wheels and can be dragged and carried like a draw-bar box when carried on a flat road.

The invention provides an air-ground amphibious mini unmanned aerial vehicle which comprises a rack, an upper rotor wing component, four lower rotor wing components and a connecting rod. The upper rotor wing component comprises an upper paddle and an upper motor arranged on the rack, the upper paddle is connected with a rotating shaft of the upper motor, and the upper end of the connecting rod is rotatably connected with the rack through an upper steering motor with a self-locking function; center connecting lines of the two lower rotor wing components which are arranged oppositely are perpendicular to each other, each lower rotor wing component comprises a base, an annular hub, a plurality of rollers, a lower paddle and a lower motor, each base is rotatably connected with the lower end of the connecting rod through a lower steering motor with a self-locking function, the center of each annular hub is connected with a base bearing, the rollers are arranged along the periphery of the corresponding annular hub and rotate around a rotating shaft in the tangential direction of the corresponding annular hub, each lower motor is arranged on the corresponding base, and each lower paddle is connected with a rotating shaft of the corresponding lower motor. Lower rotor wings of the unmanned aerial vehicle can realize air-ground amphibious switching by swinging the connecting rod.