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 discloses a steering gear, a clearance adjusting mechanism of the steering gear and a vehicle. The steering gear comprises a steering input shaft and a rack meshed with the steering input shaft. The clearance adjusting device comprises an adjusting block, a spring, a transmission wheel, a sensor, a driving component and a controller, wherein the spring presses the adjusting block tightly on the rack, the transmission wheel is arranged at one end, far away from the adjusting block, of the spring, the sensor is arranged between the transmission wheel and the spring and is used for detecting the pressing force between the steering input shaft and the rack, the driving component is matched with the transmission wheel to drive the transmission wheel to move, and the controller receives detecting information of the sensor and controls the driving component to drive the transmission wheel. According to the clearance adjusting mechanism, the meshing clearance between the steering input shaft and the rack is accurately controlled by detecting the pressing force through the sensor, the abnormal sound and the part damage caused by the enlargement of the meshing clearance are avoided, and thus the steering performance, the reliability and the durability of the steering gear are ensued.

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 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 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 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.