145results about How to "Improve driving stability" patented technology

The invention relates to an agricultural robot, and discloses an animal husbandry pushing robot autonomous navigation method based on a laser radar, which comprises a microsecond-level multi-sensor time synchronization architecture based on an FPGA (Field Programmable Gate Array); in a navigation layer, seamless switching between the GNSS and the laser SLAM is realized by constructing a virtual fusion observation value by utilizing extended Kalman filtering and a self-adaptive dynamic weight algorithm; in the sensing layer, an RGB-I multi-mode model fused with laser reflectivity and a biological micro-motion detection technology are adopted, and feed and biological obstacles are accurately distinguished; and in the execution layer, flexible self-adaptive material pushing is achieved in combination with material groove edge fitting and force-position hybrid control, and the navigation precision, the operation quality and the safety of the material pushing robot in the all-weather and unstructured pasture environment are effectively improved.

The invention provides a double-output air cylinder which comprises a cylinder body, a cylinder cover, a piston, a piston rod and a piston rod. A cavity is formed in the cylinder body, a partition plate is arranged in the cavity, and the partition plate divides the cavity into a front cavity and a rear cavity; the piston assembly comprises a first piston arranged in the front cavity in a sliding fit mode and a piston rod arranged on the head portion of the first piston, and the piston rod extends out of the cylinder body and serves as a first output end. The rotating assembly comprises a rotating assembly body arranged in the rear cavity, a driving shaft is arranged on the rotating assembly body, and the driving shaft penetrates through the partition plate, is in rigid connection with the first piston and can drive the piston rod to rotate in the radial direction. The double-output air cylinder is compact in structure, small in size, capable of adjusting the output shaft at any angle, high in adjusting precision, reliable and stable to use, particularly suitable for mechanical arms of non-standard equipment, and wide in application range, and has a self-locking effect.

The utility model relates to a power supply vehicle which comprises an engineering chassis which comprises a vehicle frame, a front steering drive axle, a rear drive axle and an electric drive device, the front steering drive axle is connected to the front end of the bottom of the vehicle frame in a rotating mode, and the rotating face of the front steering drive axle is a vertical face; the rear drive axle is arranged at the rear end of the bottom of the frame, the electric drive device is arranged on the frame, and the electric drive device is in transmission connection with the front steering drive axle and the rear drive axle; wheels are arranged on the two sides of the front steering drive axle and the two sides of the rear drive axle. The power battery system is arranged on the frame, the power battery system comprises a storage battery and a charging interface, and the storage battery is electrically connected with the charging interface; and the control system is connected with the power battery system and the electric driving device. According to the utility model, energy compensation can be dynamically provided for the electric engineering mechanical equipment, so that the electric engineering mechanical equipment can operate far away from an electric power coverage area.

The invention provides a tractor inflation and deflation system and method and a tractor. A tractor inflation and deflation system comprises a control valve set, an air source, a plurality of wheel side valves, a plurality of tires, a front axle and a rear axle, the control valve set is connected with the air source and the wheel side valves through pipelines, the wheel side valves are connected with the tires, and the tires are installed on the front axle and the rear axle respectively.

The invention relates to the technical field of vehicle control, and discloses a vehicle scheduling method and device, a vehicle and a storage medium, and the method comprises the steps: obtaining the driving state information of a vehicle before the vehicle is driven to an intersection without traffic lights, and obtaining the relative positions and predicted driving path information of other vehicles in a current intersection region; in each sampling period, determining a corresponding multi-objective optimization function based on the traffic interaction scene where the vehicle is located; wherein the traffic interaction scene is determined based on the driving state information of the vehicle and the relative positions and predicted driving path information of other vehicles; constructing a vehicle longitudinal dynamic model based on the driving state information of the vehicle, and constructing a model prediction control problem in combination with a multi-objective optimization function and a safety constraint condition; and solving the model prediction control problem to obtain a target control input sequence in a control time domain, and outputting the first control input quantity in the target control input sequence to an execution mechanism of the own vehicle to realize real-time regulation and control of the own vehicle.

The utility model provides a monorail crane cab. The monorail crane cab comprises a body, a bearing frame, walking wheels and guide wheels. The body is provided with a space for accommodating a driver; the bearing frame is arranged above the body and comprises a first bearing plate and a second bearing plate which are symmetrically arranged on the two sides of a rail. Mounting parts are arranged on the first bearing plate and the second bearing plate; the walking wheels are symmetrically arranged on the two sides of the track, installed on the first bearing plate and the second bearing plate correspondingly and suitable for moving along the bearing face of the track. An included angle of 70-90 degrees is formed between a wheel shaft of the guide wheel and the extending direction of a wheel shaft of the traveling wheel; the guide wheels are installed below the walking wheels through the installation parts, located at the edge of the bearing face of the track and suitable for providing supporting force in the horizontal direction for the edge of the bearing face of the track. According to the monorail crane cab, balance can be better kept during running, the running stability is improved, and the running safety is guaranteed.

This application discloses an underground multi-line intersecting battery-powered vehicle track, relating to the field of track technology. It includes several base plates, on which two sets of intersecting tracks are arranged, each track comprising an inner rail and an outer rail. A diamond-shaped plate is provided at the intersection of the rubber sections of the two sets of tracks, and each diamond-shaped plate has four transition plates. The transition plates are staggered with the inner rails located at both ends of the diamond-shaped plate. A directional rail, which can conform to the inner wall of the outer rail, is provided on both sides of the base plate. A control box for driving the directional rails to move is provided on the base plate. The diamond-shaped plate and its four transition plates at the track intersection can precisely guide the battery-powered vehicle wheels during track changes, allowing the wheels to smoothly transition from the original track to the target track. The directional rails on both sides of the base plate, which can move horizontally, cooperate with the control box that drives their movement to automate the track-changing operation, greatly simplifying the track-changing process, reducing track-changing time, and simultaneously reducing the safety risks associated with manual operation.

The invention discloses an electromagnetic suspension based on a planetary roller screw and a permanent magnet fault-tolerant motor, and belongs to the technical field of vehicle suspensions and motor driving. The electromagnetic suspension comprises a permanent magnet fault-tolerant motor, a reverse planetary roller screw and a spring. The permanent magnet fault-tolerant motor serves as a driving source, a rotor of the permanent magnet fault-tolerant motor is integrated with the lead screw nut, the permanent magnet fault-tolerant motor rotates to enable the pin rollers to rotate and revolve around the lead screw at the same time, then the rotating motion is converted into linear motion of the lead screw, and therefore axial acting force is output. The spring is connected with the shell and the lower connector, mainly bears the static weight of the vehicle body and has a synergistic effect with the acting force output by the motor. The device is compact in structure, high in transmission efficiency, good in fault-tolerant operation capacity, good in reliability, high in road impact resistance and capable of effectively restraining vibration of a vehicle body.

The invention belongs to the technical field of automobile part control, and particularly discloses and provides an aerodynamics-based wheel cover intelligent control system which comprises a vehicle basic data import module, a wind condition data acquisition module, a vehicle condition data acquisition module, a driving state analysis module, a wheel cover adjustment analysis module and a wheel cover adjustment execution terminal. According to the method, the vehicle structure chart, the wind condition data and the vehicle condition data are integrated, air flow can be simulated more accurately, the adjustment requirement of the wheel cover is judged, and then the scientificity and accuracy of decision making are greatly improved. The driving state analysis module and the wheel housing adjustment analysis module cooperate with each other, whether the wheel housing needs to be adjusted or not can be intelligently judged based on data collected in real time, specific adjustment categories and indexes can be determined, the wheel housing is automatically adjusted according to the actual situation, various complex driving conditions can be adapted, and the driving efficiency is improved. And the timeliness and the effectiveness of wheel cover control are ensured.

Provided are an array substrate, a display panel and a display device. The array substrate includes a substrate, an active layer, and multiple metal layers. Multiple pixel circuits are formed in the array substrate. A pixel circuit of the multiple pixel circuits includes a drive transistor, a first initialization transistor, and a second initialization transistor. The multiple metal layers include at least a first metal wire extending in a first direction and a second metal wire extending in a second direction. The first metal wire and the second metal wire are located in different layers. The first initialization transistor is connected between the first metal wire and a gate of the drive transistor and is configured to transmit a first initialization voltage on the first metal wire to the gate of the drive transistor. The second initialization transistor is connected between the second metal wire and a light-emitting element and is configured to transmit a second initialization voltage on the second metal wire to the light-emitting element. The technical solutions provided by the present application can improve the stability of the drive current so as to improve the uniformity of display brightness and display color cast.

The utility model discloses a kind of self-propelled crane track adjusting devices, comprising: transmission assembly, including support seat, the support seat is symmetrically provided with two groups, two groups the support seat between being provided with base, the top and bottom of the support seat rotatably install auxiliary wheel;Adjusting group frame, including slide, the slide and support seat end inner wall cooperation sliding connection, the inner wall of the slide is connected with the first axle rotation adjusting wheel, the slide is telescopic with the inner wall of support seat telescopic adjustment position;Track, the track is engaged with auxiliary wheel, adjusting wheel, it is related to track adjusting device technical field, through the power transmission structure of beehive gear and lead screw, screw sleeve, the guiding effect of cooperation guide rib and sliding slot, the accurate, convenient adjustment of track tension is realized, adjustment process is stable, avoid the adjustment failure caused by slide deviation, simultaneously without disassembling component, operation efficiency is high.

The application relates to a smart chassis domain control method, system, vehicle and medium considering random interference. The chassis control domain method comprises the following steps: calculating a working condition expected value of a vehicle according to a reference track. A state equation with random disturbance is constructed, an information exchange mode of four subsystems of the vehicle is set, an optimal output sequence of a subsystem perturbation vector is solved through quadratic programming, an actual control amount is obtained, and finally, front and rear wheel steering angles, four-wheel driving torques and active suspension forces are obtained by distributing the actual control amount. Through the dynamic modeling of a two-freedom vehicle under a compound working condition, the theoretical reference value of the smart chassis is solved, the influence of external random disturbance on the execution subsystem of the smart chassis is considered, the dynamic state equation of the smart chassis is constructed, the actual control amount of the smart chassis is solved based on the cooperative game idea, and the driving stability and safety of the smart chassis are greatly improved.

The invention discloses a mine rail transportation system, which relates to the technical field of mine transportation, and comprises a transportation vehicle and a driving channel, the running channel is at least provided with a ground and two side wall surfaces, and the ground and the two side wall surfaces are respectively provided with a first track and a second track; main power wheels are arranged at the bottom of the transport vehicle, at least one supporting arm is arranged on each of the two sides of the transport vehicle, the far end of each supporting arm is connected with a mounting base, and the mounting bases are rotationally connected with lateral power wheels. The main power wheel and the lateral power wheel are respectively arranged on the first track and the second track in a walking manner; the transport vehicle further comprises a power assembly, and the power assembly is used for driving the main power wheels and the lateral power wheels to rotate. And on the basis that the additional second motor is arranged to increase power, and the second track can provide more abundant supporting force for the transport vehicle, so that the transport vehicle can run at a higher speed and stably.

The utility model provides a kind of liftable chassis structure suitable for shifting robot, for the existing shifting robot structure is mostly single-layer chassis design, limited to its rear structure is higher, it is difficult to seamlessly dock with different height sickbed, this paper designs a kind of new liftable chassis structure suitable for shifting robot to effectively conquer existing robot rear structure is too high, difficult to insert bed body and other difficult problems.When shifting robot moves to patient bedside, under the drive of vertical motor, the seat plate is located on the bed surface, which facilitates nursing staff to place the patient on the shifting robot, while ensuring the balance of the robot;When the shifting robot is running on a smooth road, under the drive of the horizontal motor, the seat plate is smoothly docked through the horizontal movement of the first chassis, effectively improving the convenience and comfort of patient transfer.The rear wheel and the horizontal shifting mechanism are fixed on the second chassis, which improves the driving stability and structural reliability.

The invention relates to the technical field of tricycles, in particular to a windproof control system of a tricycle. The tricycle windproof control system comprises the controller, the wind speed sensor and the speed limiting module, the wind speed sensor and the speed limiting module are in communication connection with the controller, the high-precision wind speed sensor is used for collecting the environment wind speed in real time, and the controller automatically judges the wind power level and the vehicle rollover risk; and when risks exist, the controller carries out speed limiting control on a vehicle power part through the speed limiting module, and the upper limit of the vehicle speed is dynamically adjusted. According to the scheme, automatic monitoring, risk pre-judgment and active speed limiting of the driving safety of the tricycle in the strong wind environment are achieved, the driving stability and the rollover resistance of the tricycle are effectively improved, and the system is simple in structure, rapid in response, high in reliability and high in practicability.

A folding wheelchair joint locking structure comprises a fixing seat, a supporting rod, a limiting rod and an extension spring, the fixing seat is fixed to a rear supporting frame, one end of the supporting rod is hinged to a front supporting frame to form a hinged end, the other end of the supporting rod is in sliding fit with the fixing seat to form a movable end, the limiting rod is installed on the fixing seat, and the extension spring is installed on the limiting rod. One end of the extension spring is hooked to the end of the fixing base, the other end of the extension spring is hooked to the movable end of the supporting rod, a double-locking mechanism is achieved through the fixing base, the supporting rod, the limiting rod and the extension spring, and use safety and driving stability are remarkably improved. During folding, the supporting rods are automatically clamped into the positioning grooves to form self-locking, and accidental unfolding caused by carrying vibration is effectively prevented; during unfolding, the limiting rods and the extension springs cooperate to ensure that the front supporting frame and the rear supporting frame are stably unfolded during driving of the joint parts, the stability is improved, the technical defect of joint locking of an existing wheelchair is overcome, and the user experience is improved.

The front independent suspension system of the four-wheel electric vehicle comprises two wheel assemblies and a frame, and two sets of independent front suspensions are arranged on the front portion of the frame in a bilateral symmetry mode. The single-group independent front suspension at least comprises a hub steering knuckle, a shock absorber and a lower swing arm; a hub of the wheel assembly is rotationally mounted on the hub steering knuckle through a bearing; a lower connecting seat is integrally arranged at the lower end of the hub knuckle; the inclined upper end of the lower swing arm is hinged to the lower side of the front part of the frame through a hinge a; the inclined lower end of the lower swing arm is connected with a lower connecting seat through a spherical hinge; the driving stability and comfort of the vehicle are improved; and meanwhile, different road conditions can be adapted.

This utility model relates to a highly reliable anti-disengagement sealing structure for automotive wheel bearings, belonging to the field of automotive parts technology. It includes a wheel hub, with a drive shaft fitted inside the hub, and a wheel bearing positioned between the drive shaft and the hub. The wheel bearing includes an outer ring, within which are a pair of mirror-symmetrically distributed inner rings. Sealing ring assemblies are provided between the outer ring and the inner rings at both ends. The sealing ring assembly includes an outer skeleton fitted with the outer ring, an inner skeleton fitted with the inner ring between the outer skeleton and the inner ring, a sealing lip II that is fixedly connected to the outer skeleton at its front end, and a sealing lip I that is fixedly connected to the outer skeleton at its front end. This design features highly reliable sealing, an anti-disengagement design, extended service life, and improved driving safety. It significantly improves the reliability of the seal and the stability of the structure, effectively preventing the seal from disengaging, thereby extending the service life of the wheel bearing and ensuring driving safety.

The utility model relates to a steering transmission mechanism of automobile, including cam, left and right cam push rod, cam axle, cam frame, its characterized in that cam axle (5) is fixed on the steering gear housing, axial and automobile steering axle parallel, especially to the steering trapezoidal transmission mechanism improved steering transmission mechanism. The mechanism is composed of cam, left and right cam push rod, cam axle, cam frame. The mechanism makes automobile steering each wheel all make pure rolling through the realization real-time variable cross tie rod spacing, effectively reduces the additional resistance of automobile travel, lightens the sideslip of vehicle, further improves automobile travel stability and driving comfort, and lightens tire wear.

The utility model discloses a railway crossing curve track gauge adjusting device relates to railway engineering technical field, it includes the screw rod of transverse between concrete integral ballast bed and steel rail, one end of screw rod is equipped with the pad iron, and the other end inserts and is equipped in the iron block, and the screw rod is equipped with flat washer, spring washer and nut assembly between the iron block and the pad iron. Compared with prior art, the utility model provides a railway crossing curve track gauge adjusting device that can maintain track gauge stability for a long time and reduce maintenance cost.

The invention relates to a mobile transport system for transporting objects, comprising a base frame, a left drive unit and a right drive unit. Here, the drive units are mounted so as to be movable in the vertical direction relative to the base frame. Each drive unit has a plurality of rollers which are each rotatable relative to the drive unit about a rotational axis which extends in the longitudinal direction. The base frame has a plurality of guide slots which extend in the vertical direction, the rollers of the drive units running on the inner walls of the guide slots of the base frame.

The utility model provides a kind of buffer device of automobile shock absorber, it is related to automobile shock absorber technical field, and it includes: fixed seat, first connecting support, protection assembly, buffer assembly, second connecting support and connecting hole;The protection assembly includes base, protective shell and T-shaped guide slot;The buffer assembly includes mounting seat, damper, spring, top block and T-shaped guide block.The utility model can when vehicle travels and meets bump or obstacle, impact force is passed to second connecting support by suspension and is passed to top block, top block drives T-shaped guide block to slide along T-shaped guide slot, spring is compressed to absorb energy, damper shrinks to consume energy, ensure top block movement stability by T-shaped guide block and T-shaped guide slot cooperation, reduce abrasion and prolong life, spring and damper collaborative work improve buffering effect, improve driving stability and ride comfort, and protection assembly effectively blocks impurity to ensure reliability.

A vehicle suspension system includes a pair of torsion spring shafts, a first torsion spring shaft end of each of the pair of torsion spring shafts being connected to a left wheel and a right wheel of a vehicle, respectively, and a second torsion spring shaft end of each of the pair of torsion spring shafts, second torsion spring shaft ends of each of the pair of torsion spring shafts extend in the vehicle width direction so as to symmetrically face each other; and a connecting bracket fixedly connecting the mutually facing second torsion spring shaft ends of the pair of torsion spring shafts.

The invention relates to a precipitated silica, characterized in that it has the following physico-chemical parameters: The precipitated silica according to the invention is produced by the following method: a) initial charge of an aqueous solution of organic and / or inorganic salts and / or alkali and / or alkaline earth silicates and / or organic and / or inorganic bases with pH > 9, b) simultaneous metering of water glass and acidifying agent to this initial charge while stirring at 80 to 98°C for 60 to 120 minutes, c) then stopping the addition of water glass and metering the acid only in smaller amounts than before in order to bring the pH of the mixture (measured at 60°C) to 9.0 to 10.0, d) then stirring the mixture at high temperature > 85°C for 45 minutes to 200 minutes without further addition of reactants, e) acidification using sulfuric acid to a pH of about 3.5 to 4.5 (measured at 60°C) and f) filtration, drying to < 8% loss on drying and then granulation of the mixture. The silica according to the invention can be used for the production of rubber mixtures, in particular for the production of tyres, cable sheaths, hoses, drive belts, conveyor belts, roller coverings, shoe soles, gasket elements and damping elements.

A split type coal mining machine carrier includes an explosion-proof power source vehicle and a self-driving carrying platform, and a synchronous walking control mechanism is arranged between the explosion-proof power source vehicle and the self-driving carrying platform, the synchronous walking control mechanism includes a buffer connection control device and a synchronous walking control system, the buffer connection control device is a buffer connecting rod, includes a first rod body and a second rod body, a buffer oil cylinder is arranged between the first rod body and the second rod body, first and second hinged pieces for connecting front and rear vehicles are respectively arranged at the ends of the first rod body and the second rod body away from the buffer oil cylinder, and the first rod body and the second rod body are mutually inserted, and the cross section of the insertion interface is square, the beneficial effects of the present application are that through the design of the synchronous walking control mechanism and the speed synchronization method, the coordinated movement of the explosion-proof power source vehicle and the self-driving carrying platform is realized, and the driving stability and operation efficiency of the coal mining machine carrier are significantly improved.

The invention relates to a method of operating a vehicle, including generating a minimal risk maneuver request of the vehicle in response to a determination that there is an abnormality in a state of the vehicle, in response to the minimal risk maneuver request being generated, selecting a minimal risk maneuver type from among a plurality of minimal risk maneuver types based on the state of the vehicle, and performing a minimal risk maneuver based on the selected minimal risk maneuver type.

The application discloses a caterpillar self-propelled rotary cultivator, which comprises a chassis system, a power system, a transmission system and a rotary cultivator device. The chassis system comprises a frame assembly, a walking driving mechanism and a walking caterpillar assembly. The walking driving mechanism comprises a gearbox arranged at the front end of the frame assembly. The walking caterpillar assembly comprises caterpillars arranged at the left and right sides of the frame assembly, a driving wheel drivingly connected with the output end of the gearbox, rear wheels supporting the caterpillars and a plurality of supporting wheels. The power system comprises an engine and a fuel tank. The engine is arranged on the frame assembly and drivingly connected with the output end of the gearbox. The fuel tank is arranged on the frame assembly. The transmission system comprises a PTO transmission box and a rear output transmission shaft. The input end of the PTO transmission box is drivingly connected with the output end of the engine, and the rear output end of the PTO transmission box is connected with the rear output transmission shaft. The rotary cultivator device is arranged at the tail of the chassis system. Compared with the prior art, the application realizes comprehensive improvement in power transmission, structural layout, driving experience and operation adaptability.

A control device for a roll vehicle includes: an acquisition unit that acquires a target roll angle of a vehicle body in a vehicle width direction determined in accordance with a driving operation state of the roll vehicle, an actual roll angle of the vehicle body in the vehicle width direction that can vary in accordance with roll stiffness generated by a suspension, and a deviation of the target roll angle from the actual roll angle; a determination unit that determines an output value of a roll drive unit in accordance with a first torque value that resists the roll stiffness generated in correspondence with the actual roll angle and a second torque value that is generated in a manner to eliminate the deviation; and a drive control unit that performs control of the roll drive unit in accordance with the output value.

The invention discloses a suspension angle module, a chassis structure, a new energy vehicle and a control method.The suspension angle module comprises a lower swing arm mechanism and a steering seat, the front end of the lower swing arm mechanism is connected with the bottom of the steering seat through a ball head structure, and a hub and a tire are installed at the center of the steering seat through bearing parts; the rear end of the lower swing arm mechanism is rotationally connected with the vehicle body through a bearing piece, and the steering base can swing up and down relative to the vehicle body in the mode that the lower swing arm mechanism serves as a swing arm. A front arm is arranged on the steering base in the direction of a vehicle head, the front end of the front arm is connected with the steering base through a ball head structure, a front arm adjusting component is arranged at the rear end of the front arm, the front arm adjusting component can adjust the in-out stroke of the front arm, and the direction angle adjusting operation of the steering base and wheels is achieved.

The invention discloses a mining rail-mounted inspection robot, and the robot comprises an inspection unit which comprises an inspection robot body, a guide rail, and collection boxes which are symmetrically distributed at the two sides of the inspection robot body; the support driving unit comprises a main driving wheel which is in rolling connection in the guide rail and a first rotating shaft which is fixedly connected in the main driving wheel; the steering connecting unit comprises two groups of symmetrically distributed U-shaped frames fixedly connected to the upper surface of the bearing plate and first T-shaped sliding blocks fixedly connected to the upper surfaces of the two groups of symmetrically distributed U-shaped frames; by means of a sliding block, a transmission gear, a T-shaped push-pull rod and a first micro electric push rod, when the inspection robot body inspects an end point or a starting point, the transmission gear is engaged with a driven gear to drive a driven rod to rotate, and the whole inspection robot body is driven to rotate through a driving motor to a certain extent; and one side of the camera is deflected to carry out synchronous inspection recording.