35results about How to "Guaranteed steering performance" patented technology

The invention discloses a control system of a virtual rail bus or train. The control system comprises a vehicle head detection assembly which is mounted on a vehicle head assembly and is used for acquiring a state signal of a vehicle head, a compartment state detection assembly which is mounted on a compartment assembly and is used for acquiring a state signal of a compartment, a vehicle tail state detection assembly which is mounted on a vehicle tail assembly and is used for acquiring a state signal of a vehicle tail, and a trace following controller which is used for reckoning coordinate information of the mass center of each compartment body and coordinate information of each axle according to data detected by the state detection assemblies, wherein the trace following controller transmits a steering instruction to a drive-by-wire steering gear of each axle through a communication network to follow traces of rear wheels and front wheels. The control system of the virtual rail bus or train has the advantages of simple theory, convenient operation, capability of achieving optical control effect and the like.

The invention relates to a hydraulic system of a mining dump truck. A hydraulic steering system in the hydraulic system of the mining dump truck comprises a steering oil cylinder, a hydraulic power oil source and a steering gear, wherein the steering gear is connected with the steering oil cylinder, and the hydraulic power oil source is connected with a port P of the steering gear. The hydraulic steering system further comprises a uniform-pressure-drop valve and a first shuttle valve, an oil inlet of the uniform-pressure-drop valve is communicated with the port P of the steering gear, an oil outlet of the uniform-pressure-drop valve is communicated with an oil tank loop, a pressure control oil port of the uniform-pressure-drop valve is communicated with an oil outlet of a shuttle valve, and two oil inlets of the shuttle valve are communicated with a port L and a port R of the steering gear respectively. According to the hydraulic system of the mining dump truck, the steering gear and a pilot valve are not in combined use, an overflow speed regulating loop is formed by connecting the uniform-pressure-drop valve to the inlet and the outlet of the steering gear, steering performance is ensured, the structure is simplified, and certain cost can be reduced. Converging of lifting and the hydraulic steering system is achieved in lifting, and energy consumption is reduced.

The invention discloses a control strategy capable of realizing sliding steering in allusion to the conventional four-wheel-hub motor driven vehicles with wire controlled four-wheel steering. According to the control strategy, a sliding steering mode can be switched through a steering switch when a steering system of a vehicle is in failure, the operation space of the vehicle is limited, and the vehicle encounters a special road surface; a comprehensive electronic controller is used for judging the steering trend of the vehicle according to a corner displacement signal of a steering wheel; and output torques of four hub motors are directly controlled through a sliding steering torque distributor and then the speed difference requirements between the wheels at two sides during the steering are satisfied, so that the sliding steering with different turning radius can be realized. Through the sliding steering control strategy provided by the invention, the direction controllability of vehicles can be fully ensured on the basis of the conventional four-wheel steering.

The invention provides a rubber wheel hinging type bogie for a guiding trolleybus and the guiding trolleybus. The bogie comprises two active steering axle assemblies or the combination of one active steering axle assembly and a power shaft assembly / non-power shaft assembly supported by two tires or one tire. The two assemblies are connected through a hinging assembly. The guiding trolleybus comprises a trolleybus head assembly, one or more expandable trolleybus body assemblies, a trolleybus tail assembly and a control system. The rubber wheel hinging type bogies are arranged between the trolleybus head assembly and the trolleybus body assemblies and between the trolleybus body assemblies and the trolleybus tail assembly. The rubber wheel hinging type bogie for the guiding trolleybus and the guiding trolleybus have the advantages of being simple in structure, convenient to install, convenient to control and the like.

The invention provides an outdoor adjustable large-scale nozzle. The outdoor adjustable large-scale nozzle comprises a mounting base, a nozzle cavity, and a rubber telescopic section, a water dispersal fan is arranged in the nozzle cavity, the nozzle cavity comprises an arc water outlet plate at the front end, a water inlet thin pipe directly facing the arc water outlet plate, and a mounting stepon the outer side of the water inlet thin pipe, the arc water outlet plate comprises a fixed arc plate on the outer side and a moving arc plate on the inner side, a plurality water outlet holes are formed in each of the fixed arc plate and the moving arc plate, the two ends of the rubber telescopic section are connected to the mounting base and the mounting step respectively, and a water inlet hose and four air bags evenly distributed on the periphery of the water inlet hose are arranged in the rubber telescopic section. The outdoor adjustable large-scale nozzle has the advantages of being scientific in design, large in spraying range, small in spraying blind spot, and high in practicality.

The invention relates to grader front wheel drive and provides a grader front wheel drive hydraulic system in order to solve the problem that when front wheels of an existing grader are driven, unilateral slippage is likely to occur and affects the linear operation and the steering performance. The grader front wheel drive hydraulic system includes a grader front wheel drive control valve, whereina variable pump is connected with the P port of the grader front wheel drive control valve through a pipeline; the C1 port, D1 port, C2 port and D2 port of the grader front wheel drive control valveare correspondingly connected with the working ports of left and right front wheel hydraulic motors; the LS port is connected with a load feedback port of the variable pump; and the T port and the oilinlet port of the variable pump are connected with a hydraulic oil tank through pipelines. According to the hydraulic system, the left and right front wheels are separately controlled to avoid unilateral slippage, the linear operation and steering performance of graders can be ensured, different working condition modes can be selected according to the ground conditions of operation, the assistingeffect of the front wheels can be flexibly and effectively exerted, and the working efficiency and economical efficiency of the whole machine are improved.

In a vehicle including an idle stop device (2) that automatically stops an engine (3) when predetermined stop conditions including a condition that vehicle speed V is larger than 0 and equal to or lower than predetermined speed V1 hold and an electric power steering device (1), an assist current upper limit value Iah equivalent to an upper limit value of an assist amount in the electric power steering device (1) is set to 0 when the vehicle speed V is 0, the assist current upper limit value Iah is set to a first upper limit value Iah1 larger than 0 when the vehicle speed V is higher than the predetermined speed V1, and, when the engine (3) is automatically stopped by the idle stop device (2), the assist current upper limit value Iah is set to a third upper limit value Iah2 between 0 and the first upper limit value Iah1 when the vehicle V is larger than 0 and equal to or lower than the predetermined speed V1.

The invention relates to the field of automatic transporters and particularly provides an AGV (automated guided vehicle). The AGV comprises a frame and wheels arranged on the frame and is characterized in that the wheels are arranged at the corners of the frame, and the wheels are the driving steering wheels for driving the AGV to move. The AGV has the advantages that when the AGV turns, each driving steering wheel at the corresponding corner of the frame can provides power for the turning of the AGV, the driving torque of the driving steering wheels is large, each driving steering wheel can be independently controlled, the four driving steering wheels can be coordinated to form the overall direction of the turning of the AGV, the problem that the universal wheels, which cannot actively change directions, of an existing AGV affect the motion of the AGV during turning in the prior art is avoided, the multiple driving steering wheels work at the same time during the turning or in-situ turning of the AGV, the driving force output by the AGV is strong, and the turning effect of the AGV can be guaranteed.

The invention discloses a steering and suspension system. The steering and suspension system comprises spring struts, wheel brackets, steering engines and wheel-side steering engines, wherein the connecting lines between upper supporting points of the spring struts and the centers of lower guiding spherical hinges forms first king pin axes; upper guiding elements and the lower guiding spherical hinges form second king pin axes or pin shaft axes coincided with the first king pin axes are used as the second king pin axes; the steering engines are used for driving the spring struts to rotate around the first king pin axes; and the wheel-side steering engines are used for driving the wheel brackets to rotate around the second king pin axes. According to the steering and suspension system, as wheels are driven by the steering engines to steer during the running of a vehicle, and the wheels are driven by the wheel-side steering engines to steer during parking of the vehicle, the steering performance of the vehicle during running is guaranteed under a condition of obviously reducing requirements on a steering control system and the parking process is also simplified. In addition, the steering and suspension system can also be simplified by eliminating the steering engines; and the steering and suspension system is used for realizing non-steering rear axles of automobiles.

The invention provides an urban green belt irrigating system. The urban green belt irrigating system comprises a plurality of humidity sensors arranged inside a green belt, a plurality of spray nozzles arranged on both sides of the green belt, and a control terminal, wherein every spray nozzle comprises a mounting base, a spray nozzle cavity, a rubber expansion joint, a communication receiving unit, a timer and a microprocessor; the inside of the spray nozzle cavity is provided with a water scattering fan, the spray nozzle cavity comprises an arc water outlet plate, a water inlet fine tube facing right against the arc water outlet plate, and a mounting step outside the water inlet fine tube, wherein the arc water outlet plate comprises an outer fixed arc plate and an inner movable arc plate which are both provided with a plurality of water outlet holes; both ends of the rubber expansion joint are connected to the mounting base and the mounting step respectively, and the inside of the rubber expansion joint is provided with a water inlet hose and four airbags around the water inlet hose.

The invention provides an outdoor high-temperature-preventing adjustable large-range spray head, which comprises a mounting base, a spray head cavity, a rubber telescopic joint, a microprocessor and atemperature sensor. A water dispersal fan is arranged in the spray head cavity, and the spray head cavity comprises an arc-shaped water discharging plate at the front end, a water feeding fine pipe directly facing the arc-shaped water discharging plate, and a mounting step on the outer side of the water feeding fine pipe; the arc-shaped water discharging plate comprises a fixed arc-shaped plate on the outer side and a movable arc-shaped plate on the inner side; a plurality of water discharging holes are formed in the fixed arc-shaped plate and the movable arc-shaped plate correspondingly; thetwo ends of the rubber telescopic joint are connected to the mounting base and the mounting step correspondingly; and a water feeding flexible pipe and four airbags evenly distributed on the periphery of the water feeding flexible pipe are arranged in the rubber telescopic joint. The outdoor high-temperature-preventing adjustable large-range spray head has the advantages of being scientific in design, large in spraying range, small in spraying bind area and high in practicability.

The invention provides an outdoor haze-proof adjustable type large-range nozzle. The outdoor haze-proof adjustable type large-range nozzle comprises an installing base, a nozzle hollow cavity, rubberextensible sections, a microprocessor and a haze density sensor; a water dispersing fan is arranged in the nozzle hollow cavity; the nozzle hollow cavity comprises an arc-shaped water discharging plate at the front end of the nozzle hollow cavity, a water feeding thin pipe arranged right opposite to the arc-shaped water discharging plate and installing steps arranged on the outer side of the waterfeeding thin pipe; the arc-shaped water discharging plate comprises a fixed arc-shaped plate on the outer side of the arc-shaped water discharging plate and a moving arc-shaped plate on the inner side of the arc-shaped water discharging plate; a plurality of water discharging holes are formed in the fixed arc-shaped plate and the moving arc-shaped plate; and two ends of the rubber extensible sections are connected to the installing base and the installing steps correspondingly, and the rubber extensible sections are internally provided with water feeding hoses and four air capsules evenly distributed around the water feeding hoses. The outdoor haze-proof adjustable type large-range nozzle has the advantages that the design is scientific, the spraying range is large, the spraying dead zoneis small, and the practicability is high.

The invention discloses a swinging frame type rear wheel driving structure for a spreading machine. The swinging frame type rear wheel driving structure for the spreading machine comprises a first driving unit and a second driving unit; the first driving unit and the second driving unit are oppositely arranged; the structures of the first driving unit and the second driving unit are as same as each other; the first driving unit and the second driving unit both comprise brackets, rotating shafts, driving components, first rotating components and second rotating components; hinging holes are formed in the brackets; the rotating shafts penetrate through the hinging holes in the brackets, are arranged perpendicular to the brackets and are used for the brackets to rotate around; the driving components are arranged on the brackets; the first rotating components and the second rotating components are all arranged on the same sides of the brackets; the structures of the first rotating components and the second rotating components are as same as each other; the first rotating components and the second rotating components all comprise wheel axles and driving wheels; one ends of the wheel axles are connected with the driving components; and the other ends of the wheel axles are connected with the driving wheels. According to the swinging frame type rear wheel driving structure for the spreading machine, the tire ground area is increased by using four driving wheels so that the driving capacity is improved; by using the brackets capable of rotating, the road adaptability of the four driving wheels is made better so that the vehicle slipping possibility is reduced in a maximized manner; and by using independent driving units, and the speeds of left and right driving wheels can be independently controlled to improve the flexibility of a product.

The invention provides an outdoor anti-drying adjustable large-scale nozzle. The outdoor anti-drying adjustable large-scale nozzle comprises a mounting base, a nozzle cavity, a rubber telescopic section, a microprocessor, a timer and a humidity sensor, a water dispersal fan is arranged in the nozzle cavity, the nozzle cavity comprises an arc water outlet plate at the front end, a water inlet thinpipe directly facing the arc water outlet plate, and a mounting step on the outer side of the water inlet thin pipe, the arc water outlet plate comprises a fixed arc plate on the outer side and a moving arc plate on the inner side, a plurality water outlet holes are formed in each of the fixed arc plate and the moving arc plate, the two ends of the rubber telescopic section are connected to the mounting base and the mounting step respectively, and a water inlet hose and four air bags evenly distributed on the periphery of the water inlet hose are arranged in the rubber telescopic section. Theoutdoor anti-drying adjustable large-scale nozzle has the advantages of being scientific in design, large in spraying range, small in spraying blind spot, and high in practicality.

The invention relates to the technical field of vehicles, and in particular relates to a full-time four-wheel drive transmission system of a small and medium-sized all-terrain off-road vehicle. The transmission system comprises a main speed reducer, a CVT and a front differential; the main speed reducer is connected with an engine through a damping part, the input end of the main speed reducer is in transmission connection with the engine through the CVT, one output end is connected with the front differential through a transmission shaft, the front differential is connected with front wheels through half shafts, and the other output end is connected with rear wheels through half shafts; a protection device is mounted at the joint of the transmission shaft and the main speed reducer as well as the front differential or on the CVT transmission and is used for protecting the transmission shaft, the CVT, the main speed reducer and the front differential; an inter-axle differential mechanism and a rear axle differential mechanism which are in meshed connection through a bevel gear set are integrated in the main speed reducer; the system has the beneficial effects that the three differential mechanisms of the system are integrated in a small effective space, the steering performance is guaranteed while power distribution is achieved, and better passing capacity and steering performance are achieved.

The invention discloses a two-motor coordination control device for improving the stability of a whole vehicle. The two-motor coordination control device for improving the stability of the whole vehicle comprises a left speed sensor, an electronic control unit, a right speed sensor, a two-motor coordination controller, a left motor controller, a right motor controller, a left wheel hub motor, a left servo controller, a right servo controller, a right wheel hub motor, a left wheel, and a right wheel. The two-motor coordination control device for improving the stability of the whole vehicle can improve the stability of the whole electric vehicle and guarantee the steering effect, and is convenient to operate.

The invention provides a steering system fault-tolerant device and method and a vehicle, including an actuator, a detection mechanism and a control unit ECU; the actuator includes a first steering column tube, an electromagnetic locking component, a second steering column tube, a road sensor motor, a steering column Motor and steering gear; one end of the first steering column tube is used to connect with the steering wheel, and the other end is locked or separated from one end of the second steering column tube through an electromagnetic locking part; the road induction motor is connected to the first steering wheel through the first reduction mechanism The steering motor is connected to the second steering column tube through the second reduction mechanism, and the other end of the second steering column tube is connected to the steering gear; the detection mechanism is used to detect the steering wheel angle signal and the front wheel angle signal; the control unit ECU respectively Connect with detection mechanism, road sense motor, steering motor and electromagnetic locking parts. In the present invention, after the road sense motor or the steering motor fails, the mechanical steering is restored after switching between the two modes, so as to ensure the driver's ability to steer the vehicle in an emergency situation.

The invention provides an urban street anti-haze water spraying system. The urban street anti-haze water spraying system comprises a plurality of haze concentration sensors arranged on both sides of an urban street, a plurality of spray nozzles arranged on roofs of buildings on both sides of the urban street, and a control terminal. Each spray nozzle comprises a mounting base, a spray nozzle cavity, a rubber expansion joint, a communication receiving unit and a microprocessor, wherein a water dispersion fan is arranged in the spray nozzle cavity; each spray nozzle cavity comprises an arc-shaped water outlet plate at the front end, a water inlet thin pipe arranged right opposite to the arc-shaped water outlet plate, and a mounting step at the outer side of the water inlet thin pipe; each arc-shaped water outlet plate comprises a fixed arc-shaped plate at the outer side and a movable arc-shaped plate at the inner side; each fixed arc-shape plate and the correspondingly movable arc-shapeplate are both provided with a plurality of water outlet holes; two ends of each rubber expansion joint are connected to the corresponding mounting base and the corresponding mounting step correspondingly; and a water inlet hose and four air bags uniformly distributed around the water inlet hose are arranged in each rubber expansion joint.

The invention provides an urban street high-temperature-resistant water spraying system that comprises a plurality of temperature sensors arranged on two sides of an urban street, a plurality of sprayers arranged on roofs on two sides of the urban street and a control terminal. Each sprayer comprises a mounting base, a sprayer cavity, a rubber expansion joint, a communication receiving unit and amicroprocessor; a water dispersing fan is arranged in the sprayer cavity; the sprayer cavity comprises an arc-shaped water outlet plate at the front end, a water inlet thin pipe right facing the arc-shaped water outlet plate and a mounting step on the outer side of the water inlet thin pipe; the arc-shaped water outlet plate comprises a fixed arc-shaped plate on the outer side and a movable arc-shaped plate on the inner side, and a plurality of water outlet holes are formed in the fixed arc-shaped plate and the movable arc-shaped plate; two ends of the rubber expansion joint are connected to the mounting base and the mounting step respectively, and a water inlet hose and four air bags evenly distributed around the water inlet hose are arranged in the rubber expansion joint.

The invention relates to the field of a radial tire and especially relates to the radial tire with an asymmetric structure. The radial tire comprises a steel ring part and a tire lateral combined part, wherein the steel ring part comprises a rubber core and a steel ring; the tire lateral combined part comprises a tire sidewall and a seam allowance; the tire is divided into an inner tire side and an outer tire side; the rubber core comprises an inner side tire rubber core and an outer side tire rubber core; the seam allowance comprises an inner side tire seam allowance and an outer side tire seam allowance; the steel ring part and the tire lateral combined part on the inner side and outer side of the tire are arranged in asymmetric form; the height and thickness of the inner side tire rubber core are more than the height and thickness of the outer side tire rubber core; the thickness of the inner side tire seam allowance is less than the thickness of the outer side tire seam allowance. The requirements for various running road conditions of tire are met and the performance requirements for the inner and outer sides of the tire are also met.