592 results about "Downforce" patented technology

A diffuser element for the underside of a vehicle comprises in longitudinal vertical section, in sequence from front to rear, a first smoothly and monotonically rising panel, and a second panel, and a gap between the first and second panels, wherein the edge of the second panel adjacent the gap comprises a substantially flat planar section which is offset from and below the plane of the first panel ahead of the gap. This type of gap in the diffuser serves to bleed off the boundary layer from the airflow passing through the diffuser, thus enhancing its effectiveness and improving the downforce that is generated as a result. The gap is preferably located in the front half of the diffuser and can form the entrance to a duct leading to an exit on the rear of the vehicle.

Tire traction is dynamically increased in a vehicle by performing a sequence of steps. The vehicle includes a controllable suspension having a damper, a spring, and an active element, a suspension controller, and a controllable aerodynamic element. The body of the vehicle is positioned at a level which allows for a predetermined amount of upward suspension travel. The suspension controller receives a trigger after the body of the vehicle is positioned at a level which allows for a predetermined amount of upward suspension travel. The suspension controller generates a first control signal upon receipt of the trigger. The first control signal is sent to the active element to generate the positive impulse. The positive impulse causes application of force to the wheel of the vehicle in a downward direction, thereby dynamically increasing tire traction. Oscillation of the body of the vehicle is inhibited using the damper as the body of the vehicle oscillates as a result of the spring, thereby inhibiting oscillation of tire traction. The rise of the body of the vehicle is limited by modulating the variable downforce on the body of the vehicle generated by the controllable aerodynamic element.

The invention discloses an impact resistance testing device and method for carton production, and relates to the technical field of impact testing devices.The impact resistance testing device comprises a baffle, four supporting frames and sliding rods are arranged at the upper end of the baffle, a top cover is arranged at the upper ends of the four supporting frames, and a transmission chain is arranged between the top cover and the baffle; a carton is arranged in the middle of the upper end of the baffle, a pressure applying mechanism for carrying out impact test on the carton is arranged among the four transmission chains, and an impact mechanism for changing the impact area to carry out impact resistance test on the carton is arranged in the pressure applying mechanism. According to the invention, a plurality of impact testing methods are provided through cooperation of the pressure applying mechanism and the impact mechanism to simulate various pressures and impacts possibly encountered in the actual transportation and storage process of the carton, so that the pressure resistance and the impact resistance of the carton can be evaluated more accurately; and the transmission chain controls the pressing force of the pressing mechanism, so that the bearing capacity of the carton can be quantified, and the deformation degree and the limit value of the carton under different pressures are determined.

The invention discloses a multi-station air tightness detection device for a stop valve, and relates to the technical field of air tightness detection. The device comprises a device body, a driver is arranged at the top of the device body, a plurality of positioning grooves are formed in the top of the driver at equal intervals, sealing assemblies are arranged in the positioning grooves of the driver, an inflator is arranged in the center of the top of the driver, and a hydraulic telescopic column is arranged on the outer wall of the inflator; an anti-deviation device is arranged on the edge of the top of the driver, and an anti-pollution device is arranged in the anti-deviation device. By means of the clamping stability of the hydraulic clamping device on the stop valve and the downward pressure of the electric telescopic rod, the good stability of the stop valve in the detection process is guaranteed, and the situation that errors occur in the detection result due to the dislocation phenomenon is avoided; and the situation that the labor intensity of workers is increased due to the fact that the workers need to press the stop valve with large force in the detection process of the stop valve is avoided.

A row unit system for a seeder includes a frame, a parallel linkage configured to couple the frame to a mount associated with a toolbar of the seeder, an opener disc rotatably coupled to the frame, and a packer wheel assembly. The packer wheel assembly includes a packer wheel arm pivotally coupled to the frame, a packer wheel rotatably coupled to the packer wheel arm, and a packer wheel actuator pivotally coupled to the packer wheel arm and the frame, wherein the packer wheel actuator is configured to control a downforce applied by the packer wheel to soil.

A method for downforce control includes receiving sensor data from sensors, using a feedforward control to determine a first requested normal force at the first axle of the vehicle and a second requested normal force at the second axle of the vehicle and the sensor data, using a feedback control to determine a first requested normal force adjustment at the first axle of the vehicle and a second requested normal force adjustment at the second axle of the vehicle using the sensor data, fusing the first requested normal force at the first axle of the vehicle with the first requested normal force adjustment to determine a first-adjusted normal force request at the first axle, and fusing the second requested normal force with the second requested normal force adjustment to determine a second-adjusted normal force request at the second axle.

The invention discloses a tension-adjustable power cable mounting and erecting new energy tensioner, which is used for executing two actions of take-up and pay-off on the basis of two large winding wheels aiming at the erecting process of a power cable, and is provided with a stress guide wheel and a differential gear which are associated with each other aiming at the middle position of the two large winding wheels. The device is essentially based on the hooping force generated when the power cable is wound on a large winding wheel, the downward pressure generated by the power cable on a stress guide wheel is combined, the stress change is converted into hydraulic change, and the key point is that the stress guide wheel generates a linear movement process in the vertical direction in the winding process of the power cable, so that the power cable is wound on the large winding wheel. According to the power cable erecting device, a driving gear is actively controlled and limited through hydraulic pressure changes, and the purpose is that in the power cable erecting process, the workload for a power piece is reduced through the conversion process of stress and hydraulic pressure in three positions.

The invention relates to an electric drive device (10) for a motor vehicle comprising a housing (18), at least one electric machine (20) which has at least one rotor (24) rotatable about an axis of rotation (26) relative to the housing (18), at least one planetary gear set (28) arranged in the axial direction of the electric machine (20) next to the electric machine (20), which has a sun gear (30) non-rotatably connected to the rotor (24), a planet carrier (32) forming an output of the planetary gear set (28) and rotatable about the axis of rotation (26) relative to the housing (18), planet gears (38) rotatably held on the planet carrier (32) and a ring gear (36) non-rotatably connected to the housing (18), and a cooling and lubrication system (44) which has a pump (46) for pumping a cooling and lubricating medium.The cooling and lubrication system (44) includes a receiving area (48) in which the cooling and lubrication medium can be received, forming a sump (50).

An example manure application unit can include: a main arm pivotally mounted to a toolbar mount tube; a coulter blade operatively connected to the main arm; a closure arm pivotally mounted to the main arm; a closure blade mounted to the closure arm; a main arm downforce assembly, operatively connected between the toolbar mount tube and the main arm, to provide an adjustable downforce force to maintain the coulter blade engaged with ground; and a closure arm torsion spring, operatively connected to the closure arm, to provide varying downforce forces on the closure blade to maintain the closure blade engaged with the ground during operation.

The invention relates to the technical field of tire detection, and discloses an automobile tire service life prediction method and system, the system comprises a support device, a sliding assembly, a sensor assembly and a control module; the acquisition unit acquires parameter information of the tested tire to determine a downward pressure when the tested tire is in contact with the sliding assembly, controls the driving motor to rotate to acquire vibration data of the tested tire within a preset time, and acquires temperature data of the tested tire based on the infrared thermometer; the processing unit performs normal distribution processing on the vibration data to determine vibration representative data; establishing a temperature distribution diagram according to the temperature data; determining a first life prediction value of the tested tire according to the tread wear; the judgment unit determines a wear evaluation value; and the adjusting unit adjusts the first service life prediction value to obtain a final tire service life prediction value. According to the method, the vibration and temperature anomaly evaluation values are combined with the tread wear data, so that the tire life is dynamically adjusted and predicted, and the prediction precision of the tire life is improved.

The invention relates to the technical field of transportation, in particular to loading and unloading equipment for transportation engineering, and solves the problems that when the loading and unloading equipment for the transportation engineering such as train double-wing loading and unloading machines is used, the end corners of a belt conveyor receive downward pressure, and the downward pressure can influence the service life of a hydraulic air cylinder, so that the service life of the hydraulic air cylinder is influenced. And the outer surface of the belt conveyor is inevitably stained with dust and impurities in the conveying process, and if the dust and the impurities are not cleaned in time, the service life of a belt on the belt conveyor is influenced. Comprising a train double-wing loading and unloading machine movable base. A supporting point can be manufactured on one side of the lower end face of the belt conveyor through the hydraulic cylinder anti-fatigue supporting mechanism, a belt located on the belt conveyor can be automatically cleaned firstly through the self-cleaning maintenance mechanism, and a protective layer is automatically sprayed on the outer surface of the belt; by means of the technical scheme, the service life of the hydraulic air cylinder and the belt conveyor is prolonged.

A land vehicle having an aerodynamic system includes a rear air diffuser positioned at the lower rear of the land vehicle and configured to redirect airflow from under the land vehicle upward behind the land vehicle while the land vehicle is traveling in a forward direction, and a rear wing positioned at the upper rear of the land vehicle and configured to generate downforce when the land vehicle is traveling in a forward direction. The rear air diffuser and the rear wing may be configured and arranged to merge the flow of air from underneath the land vehicle with the flow of air from above the land vehicle.

A downforce control system of a host vehicle includes: at least one module configured to generate a first bias lower bound and a first bias upper bound; a parameter module configured to determine a current understeering angle of the host vehicle; an adaptive bias bounding module configured to generate an understeer and oversteer multiplier based on the current understeering angle; a fusion module configured, based on the first bias lower bound, the first bias upper bound, and the understeer and oversteer multiplier, to generate a second bias lower bound and a second bias upper bound; and a downforce tracking module configured, based on the second bias lower bound and the second bias upper bound, to adjust position of one or more downforce devices of the host vehicle.

The invention discloses an automatic assembling mechanism for railway track fastener nuts, and belongs to the technical field of automatic assembling equipment. The mechanism comprises a mechanical arm, a nut assembling mechanism, a power transmission device, a propelling device, a connecting seat and a visual device, the nut assembling mechanism is composed of a compliant device and a magnetic attraction device, the tail end of a mechanical arm is fixed through a connecting base, a visual device recognizes the position of a fastener in real time and guides the mechanical arm to be positioned, a servo motor transmits torque through a speed reducer and a telescopic universal connecting assembly, nut screwing is achieved, and the compliant device absorbs assembling errors and adapts to the posture. The magnetic attraction device is used for adsorbing and fixing the nut; the six-dimensional force sensor is used for monitoring and feeding back torque in real time; the control system is used for adjusting pre-tightening force; the propelling device is used for applying axial thrust; the device can realize automatic identification, positioning, tightening and pre-tightening control of the nut, and is suitable for various sleeper structures and complex track working conditions.

A method for drift detection and control for a vehicle may include determining an intentional drift probability of the vehicle based at least in part on one or more occupant inputs. The method further may include determining an initial aero bias upper bound using a first control system. The method further may include determining an initial aero bias command using a second control system. The method further may include determining a final aero bias upper bound based at least in part on the intentional drift probability, the initial aero bias upper bound, and the initial aero bias command. The method further may include controlling one or more aerodynamic actuators of the vehicle based at least in part on the final aero bias upper bound and the initial aero bias command.

The present invention provides variable angle wing structure for vehicles installed on the outer side of the handlebar of a motorcycle. It can automatically adjust the angle according to the vehicle speed to provide optimal downforce and assist in vehicle travel. The present structure includes a fixed seat, a pivot shaft, a wind deflector mechanism, a control device, a drive unit, and a vehicle dynamic sensor. Through the control device, the information detected by the vehicle speed sensor is transmitted to the control device, and the inclination angle of the wind deflector is controlled based on the set value to improve driving safety and stability. The variable-angle wind deflector structure of the present invention is applied to motorcycles and compared to the existing fixed-angle wind deflector, it can effectively improve stability during driving, providing a safer driving experience.

The invention relates to a flow guiding apparatus of a motor vehicle, comprising a spoiler which is fastened to a tailgate of the motor vehicle, and to an adjustment kinematics device for adjusting the spoiler between a rest position, in which the spoiler is arranged in a flush-mounted manner in the tailgate, and at least one functional position, in which the spoiler is deployed beyond the vehicle contour or the surface of the tailgate with regard to the height and / or the angle. In order to achieve a downforce effect and / or braking effect and / or aerodynamic improvement during driving of the motor vehicle, the adjustment of the adjustment kinematics device takes place via actuable drive means. This flow guiding apparatus is intended to be developed in such a way that a multiplicity of operating positions of the spoiler can be set with a compact overall design and integration into the movable tailgate, with at least one operating position intended to fulfil the function of an air brake. For this purpose, the adjustment kinematics arrangement comprises at least one adjustment kinematics unit which is formed from a first adjustment kinematics system and a second adjustment kinematics system which is coupled to the former in an operatively connected manner, the first adjustment kinematics system being configured as a four-bar linkage and to set a deployment height, and the second adjustment kinematics system being configured as a four-bar linkage and to set a deployment angle, and an adjustment of the spoiler being a superimposed kinematic adjustment movement of the first and second adjustment kinematics system, and the first adjustment kinematics system comprising at least one pivoting axle which is mounted in a stationary manner and is pivotal via an electric motor as drive means, and the second adjustment kinematics system comprising a pivoting axle which is mounted in a stationary manner and is pivotable via a separately actuable electric motor as drive means.

A downforce system for a vehicle includes: a restrictor configured to restrict a flow of air into a region that is defined at least in part by the restrictor and a ground surface, a rim disposed on the restrictor and configured to form at least a partial seal with the ground surface; a dedicated pressure source disposed outside the restrictor and connected to the restrictor via an air flow path, the pressure source being configured to generate a pressure differential across the restrictor; and a dust and debris removal system configured to prevent dust and debris from exiting the downforce system via the air flow path. By generating a pressure differential across the restrictor, a downforce which acts on the vehicle may be generated. The downforce may result in an improved grip or traction of the vehicle, which may improve handling and safety of the vehicle.

The present disclosure relates to a vehicle ramp, comprising a ramp body formed by an acute-angle front ramp portion and a rear ramp portion. The core innovation lies in the pivotally connected rotatable anti-slip washer at the lip edge of the front ramp portion: when deployed, it forms a ground transition extension zone, where a reverse static friction force is generated between the washer and the ground utilizing the downforce of the tire, which effectively prevents rearward sliding displacement of the ramp. The washer achieves deployment and locking through the nesting of the protrusion and hollowed-out area, and when retracted, it is secured by a latching block within the groove to maintain the cleanliness of the friction surface.

A vehicle includes a frame configured to pivot relative to a support surface through both positive and negative roll angles and a wheel support coupled to the frame. The wheel support includes an axle mounting portion. An axle defining an axis of rotation is mounted to the wheel support at the axle mounting portion. A downforce generating system is mounted to the wheel support between the frame and the axle mounting portion. The downforce generating system includes a wing support mounted to the wheel support and a downforce generating wing pivotally mounted to the wing support. The downforce generating wing includes an aerodynamic surface having a leading edge. The downforce generating system is configured to maintain a substantially horizontal orientation of the leading edge relative to the support surface as the frame pivots between the positive and the negative roll angles.

The invention relates to a constant-force grinding device and method based on gravity-elastic force dynamic balance, solves the problem of contact force fluctuation caused by blade profile deviation, actuating mechanism positioning error and grinding tool abrasion, and ensures that normal pressure is stabilized at a set threshold value in the polishing process. The device comprises a constant-force coil spring, a motor, a base, a limiting block, a linear guide rail, a balancing weight, a grinding wheel and a foundation frame. The linear guide rail in the vertical direction is installed on the foundation frame, the base is connected to the linear guide rail in a sliding mode and can move up and down on the linear guide rail, the motor is fixed to the base, the upper end of the constant-force coil spring is fixedly connected to the top of the foundation frame, and the lower end of the constant-force coil spring is connected with the base. The balancing weight is installed on the motor or the base, and the balancing weight requirement is calculated according to the target downward pressure F. The contact force stability is improved; the maintenance period is prolonged, and the constant-force floating structure does not need electrical maintenance.

A method for active downforce control for a vehicle may include determining an out-of-phase interaction index between a driver of the vehicle and a controller. The controller is configured to control one or more aerodynamic actuators. The method further may include determining one or more active downforce control inputs based at least in part on the out-of-phase interaction index. The method further may include controlling the one or more aerodynamic actuators based at least in part on the one or more active downforce control inputs.

The invention relates to a hydrogen-diesel oil dual-fuel single-cylinder engine heavy-load working condition combustion control system and method, belongs to the technical field of engines, and is characterized in that an air inlet pressure sensor is mounted near an air inlet valve, a control valve is mounted in an air inlet channel, an electric supercharger and an intercooler are connected to the other air inlet channel in series, and a temperature sensor is mounted; a pressure sensor, a hydrogen sprayer and an oil sprayer are installed in the combustion chamber, and the hydrogen sprayer, the oil sprayer, the electric supercharger, the control valve, the air inlet pressure sensor, the pressure sensor, the intercooler and the temperature sensor are connected with a vehicle-mounted computer at the same time. The control over the pressure rising rate and the pressure fluctuation of the hydrogen-diesel oil dual-fuel single-cylinder engine under the large-load working condition is achieved by adjusting the air inlet supercharging pressure and the fuel injection control strategy, and the problem of abnormal combustion under the large-load working condition is solved.

A vehicle aerodynamic system with dual operating modes to modify downforce across varying speed ranges and driving conditions. The system comprises multiple fans positioned in airflow pathways and deployable skirts that interact with the ground surface. In a first mode, a complete set of skirts creates a fully sealed bounded region under the vehicle with central fans generating maximum downforce at low speeds on smooth surfaces. In a second mode, a subset of skirts (primarily side skirts) modifies the bounded region while all fans operate to provide downforce in dynamic driving conditions with uneven surfaces. The system includes a control mechanism to selectively deploy skirts and operate fans based on driving conditions, optimizing between maximum downforce at low speeds and improved performance over varying terrain at higher speeds.

To provide an automobile capable of obtaining a front downforce without compromising its design.SOLUTION: A portion of a front fender is configured to be variable between a normally mounted state and a raised state to form a wing in front of a side mirror.SELECTED DRAWING: Figure 2

The invention relates to the technical field of automobile transmission, in particular to a forming device for machining an automobile gearbox shell, and solves the problem that the smoothness of the surface of a guide shaft is affected due to the fact that the surface of the guide shaft is easily contaminated with dust in the prior art. The dust particles can cause the contact surface of the push plate and the guide shaft to be abraded, so that the push plate is not smooth enough to move and even shakes, and the die-casting precision of the gearbox shell is influenced. A forming device for machining an automobile gearbox shell comprises a loading frame, a control module and a die-casting module. The die-casting module comprises a top plate, a bottom plate and a push plate; the top plate and the bottom plate are connected through four guide shafts. By means of the adjustable pressure dividing assembly, uniform distribution of downward pressure on the push plate is achieved. The adjustable pressure dividing assembly can adjust concentration and sharing of downward pressure according to needs, it is ensured that the pressure of all areas in the die casting process is kept consistent, and therefore the precision and the overall quality of die castings are improved.

The utility model relates to the technical field of asphalt road flattening devices, and discloses an asphalt road flattening device which comprises a flattening frame provided with two load-bearing rollers, an adaptive frame is arranged on the side edge of the flattening frame, a sliding bearing seat is arranged in the adaptive frame in a sliding mode, and the load-bearing rollers are arranged on the sliding bearing seat. The two ends of the load bearing roller are rotationally arranged in the sliding bearing seats, springs are arranged at the upper ends and the lower ends of the sliding bearing seats, and handrails used for pushing the flattening frame to move are fixedly arranged on the flattening frame. The asphalt pavement compacting device is simple in structure, has two compacting surfaces acting on an asphalt pavement, can increase the weight of the load-bearing roller by adding water to play a role in rapid compacting during working, and in addition, an additional downward pressure is effectively increased under the action of the linear vibrator, so that the compacting effect is better, and the asphalt pavement compacting device is suitable for popularization and application. Water can be drained after the water filling nozzle cover is taken down, the weight of the load-bearing roller is reduced, and transportation and movement are facilitated.

The invention relates to the technical field of AGV transport vehicles, in particular to an AGV steering wheel with independent suspension and a shock absorption method. The rotary part of the AGV steering wheel with the independent suspension is provided with a supporting table, the supporting table is provided with a mounting part used for being connected with a frame, and the mounting part is constructed to be connected with the frame through a rotating shaft; the pair of power wheel sets are symmetrically arranged along the axis of the rotating shaft, the power wheel sets are located on the two sides of the bearing table respectively, and the supporting end and the buffering end of the wheel frame are located on the two sides of the walking motor respectively; a connecting shaft is arranged between the pair of power wheel sets, the end of the connecting shaft is connected with the supporting end of the wheel frame, and a stand column used for being connected with the supporting table is arranged on the side wall of the connecting shaft. The damping structure is arranged between the wheel carrier and the supporting table and used for applying downward pressure to the wheel carrier, and a pair of damping units of the damping structure are symmetrically arranged along the axis of the rotating shaft. According to the AGV steering wheel with the independent suspension, the steering stability is guaranteed, and particularly, the steering function of the steering wheel is guaranteed when a vehicle frame is in a no-load state.

The invention relates to the field of automobile empennages, in particular to an automotive empennage assembly and a vehicle with the automotive empennage assembly.The automotive empennage assembly comprises a mounting base, and an empennage structure is arranged on the mounting base; the empennage structure comprises a middle wing arranged on the mounting base and two side wings symmetrically distributed at the two ends of the middle wing respectively; the side wings are connected with driving structures used for controlling the side wings to move, and the driving structures comprise swing mechanisms connected to the side wings and driving mechanisms used for controlling the swing mechanisms to move. According to the empennage assembly disclosed by the invention, through the design of the two arc-shaped grooves with different lengths, the side wings can be turned over and then rotated, so that the windward area of the empennage is increased, and enough downward pressure is provided for a whole vehicle; and the stability of the automobile during high-speed driving is enhanced.

A method for downforce control includes receiving vehicle inputs. The method includes determining a first normal-force request at the front axle and a second normal-force request at the rear axle using the purality of vehicle inputs and a prediction model. The prediction model is a combined state space model that integrates a half-car state space model and an actuator state space model, the half-car state space model is developed using a half-car model, and the actuator state space model is developed using a neural network model. The method further includes determining a first position of the first aerodynamic body relative to the vehicle body and a second position of the second aerodynamic body relative to the vehicle body based on the first normal-force request and the second normal-force request, respectively.