253 results about "Downforce" patented technology

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 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.

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.

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 digital twinning, and particularly discloses a cab wind resistance contour optimization method based on digital twinning, which comprises the following steps: S1, establishing a three-dimensional model of a cab, and calculating front wind resistance according to an included angle between planes; s2, marking a standard plane in the initial model, obtaining the air velocity of the standard plane, calculating the air pressure of the standard plane, and calculating the rising force based on the air pressure; s3, marking an influence surface in the initial model, obtaining the air velocity of the influence surface, calculating the air pressure of the influence surface, and calculating the downforce based on the air pressure; and S4, calculating the friction force and the wind resistance coefficient of the initial model, and selecting an optimal model based on the wind resistance coefficient. According to the method, the effect of the optimized cab wind resistance contour is judged through a more reasonable method, so that the cab wind resistance contour with the best effect is selected, the air resistance during vehicle running is reduced, the load and fuel consumption of an engine are reduced, and the running cost is saved.

An active downforce control method for a vehicle may include determining an index of phase-shifted interactions between a driver of the vehicle and a controller. The controller is configured to control one or more aerodynamic actuators. Furthermore, the method may include determining one or more inputs to the active downforce control, at least partially, based on the index of phase-shifted interactions. The method may also include controlling one or more aerodynamic actuators, at least partially, based on the one or more inputs to the active downforce control.

A trencher for cutting a trench into a trenching surface. The trencher includes a rotatable cutting wheel and a motor for rotating the cutting wheel. The trencher includes a shroud assembly. The rotatable cutting wheel is at least partially disposed within the shroud assembly. A lift frame raises and lowers the cutting wheel and shroud assembly. A lift frame actuator moves the lift frame from a transport position to a lowered, trenching position. A skid is connected to the lift frame for contacting the trenching surface during trenching operations. The skid is forward of the shroud assembly. The shroud assembly is moveable relative to the skid. A downforce device enables the skid to apply a downforce to the trenching surface during trenching operations. The downforce device is separate from the lift frame actuator.

This utility model belongs to the technical field of new energy vehicle horn frame technology, and particularly relates to a dual-station dimension inspection device for new energy vehicle horn frames. It includes a body, with four evenly distributed sliding grooves on one side of the upper wall and three evenly distributed sliding grooves on the other side. Movable blocks slide within the sliding grooves, and detachable detection columns are mounted on the top surface of the movable blocks. A gantry frame is fixedly mounted on the top surface of the body, with two guide rods sliding within the upper arm of the gantry frame. A pressure plate is fixedly mounted at the lower end of the guide rods, and two uprights are fixedly mounted on the top surface of the gantry frame. A scale is provided on the front of each upright. This utility model allows for the inspection of mounting holes for horn frames of different specifications by adjusting the position of the detection columns. A spring applies downward pressure to the pressure plate, causing the bottom surface of the pressure plate to press firmly against the top surface of the horn frame. The pointer on the scale indicates the thickness of the horn frame.

This invention relates to the field of automotive braking, specifically providing a lightweight brake pump system for light trucks. The system includes a brake pump housing. A retaining ring is installed on one side of the housing, acting on a push rod inside a connector and an external telescopic cylinder. The telescopic cylinder can be deformed under pressure and then spring back to its original position. A foot brake assembly is connected to one end of the telescopic cylinder. By pressing the pedal of the foot brake assembly, the assembly rotates and generates downward pressure. This downward pressure causes the push rod to slide. As the push rod slides, it causes a piston push plate to move along the inner side of the brake pump housing. The piston push plate's movement generates thrust, which squeezes the brake fluid and converts the pressure into braking force, which is then transmitted to the other brake calipers. Because the piston push plate has a large contact area with the brake fluid, the brake fluid responds quickly to the thrust, resulting in greater braking force and better performance for the brake calipers.

The invention relates to a friction clutch (1) comprising a housing (2), a counter pressure plate (6) fixed to the housing, a pressure plate (4) movable to a limited extent in an axial direction (A) of the friction clutch (1), a plurality of actuation devices (5), a spring mechanism (15) and a clutch disc (3), the clutch disc (3) is frictionally clamped between the counter-pressure plate (6) and the pressure plate (4) by the force generated by the spring mechanism (15), the pressure plate (4) being separated from the clutch disc (3) by means of the actuating device (5) against the force generated by the spring mechanism (15) in the disengaged state of the friction clutch (1), and the pressure plate (4) being separated from the clutch disc (3) by means of the actuating device (5) against the force generated by the spring mechanism (15) in the disengaged state of the friction clutch (1). Each of the actuating devices (5) has a respective actuating lever (9) and an intermediate lever (10), the outer end (11) of the actuating lever (9) in the radial direction (R) of the friction clutch (1) being rotatably fixed to the housing (2) via an actuating bearing (16), the intermediate lever (10) having a first end (13) located radially (R) outside and a second end (14) located radially (R) inside, the first end (13) being rotatably fixed to the housing (2) via an actuating bearing (16), and the second end (14) being rotatably fixed to the housing (2) via an actuating bearing (16). An intermediate lever (10) acts on the pressure plate (4) at a first end (13) and engages on the counter pressure plate (6) at a second end (14), the intermediate lever (10) being rotatably fixed to the actuating lever (9) via an intermediate bearing (17), and the intermediate lever (10) being rotatably fixed to the counter pressure plate (6) via an intermediate bearing (17). A first rod section (18) of the intermediate rod (10), which extends in the radial direction (R) between the intermediate bearing (17) and the first end (13), is further away from the pressure plate (4) in the axial direction (A) than the actuating bearing (16).

The application discloses a vehicle model self-adaptive intelligent front wheel air resistance plate system, and belongs to the technical field of automobile aerodynamics optimization. The vehicle model self-adaptive intelligent front wheel air resistance plate system comprises a parameter sensing layer, an intelligent decision layer and an execution control layer. The parameter sensing layer is used for collecting sensing parameters in real time. The intelligent decision layer is used for calculating a minimum wind resistance coefficient, maximizing a downforce and completing adjustment within a response time constraint, and forming a control instruction based on the sensing parameters by using a deep reinforcement learning algorithm under given vehicle model characteristics and working conditions. The execution control layer is used for executing the control instruction. The front wheel air resistance plate is dynamically adjusted under the action of the execution control layer. The disclosed system realizes dynamic adjustment of parameters such as curvature, thickness and chord length by combining multi-dimensional parameter sensing, intelligent decision and execution control three-layer optimization architecture and self-adaptive curved surface material, so that optimal wind resistance and lift control can be realized under various vehicle models and complex working conditions.

A downforce indicator device for indicating a downforce acting on an insertion tool includes a tool receptacle for receiving an insertion tool, a downforce measurement unit for measuring a downforce acting on the tool receptacle, and a downforce indicator unit for indicating the measured downforce. The downforce measuring unit includes a first and a second sleeve, coaxially and displaceably disposed on the first sleeve in the axial direction. The first sleeve is connected to the second sleeve by a limiting element which can be displaced axially on the first sleeve to establish a maximum position of the second sleeve for an axial displacement of the second sleeve directed away from the first sleeve. The first sleeve and the second sleeve form a common receptacle for receiving a spring element acting on the second sleeve in the direction towards the maximum position. The maximum position is associated with a minimum downforce.

The utility model relates to the technical field of elevator maintenance, and discloses a lift car limiting device for elevator maintenance, which comprises a mounting plate, a limiting mechanism is arranged on the mounting plate, the limiting mechanism comprises a fixing frame and a guide rod, and the guide rod is fixedly connected inside the fixing frame. The mounting plate is mounted on the shaft wall of the bottom end of the elevator shaft, when an elevator needs to be overhauled, the lift car is moved to the bottom of the elevator shaft, the lift car falls on the limiting seat, the limiting seat can move downwards under the downward pressure of the lift car, the descending force of the limiting seat can be buffered by the spring, and the lift car is prevented from being overhauled. The problem of collision damage caused by contact between the lift car and the limiting seat is avoided, after the lift car stops stably, the hydraulic oil cylinder is started to push the tooth block to move in the direction of the mounting plate, the tooth block is meshed with the tooth plate, and therefore the position of the limiting seat is fixed, the limiting seat can achieve the purpose of limiting and supporting the lift car, and the service life of the lift car is prolonged. And therefore, the safety during elevator maintenance is improved.

The invention discloses a vehicle empennage control method, device and equipment based on road adhesion coefficient estimation, and the method comprises the steps: obtaining a driving state parameter of a target vehicle in a current time period, and determining adhesion coefficient time sequence data and slip rate time sequence data of the target vehicle; acquiring image information of a road in front of the target vehicle, and extracting a road texture feature matrix and a road color feature matrix; inputting the attachment coefficient time series data, the slip rate time series data, the road texture feature matrix and the road color feature matrix into a pre-trained road attachment coefficient estimation model to obtain a road attachment coefficient estimation value at the next moment; and according to the road adhesion coefficient estimation value, determining a corresponding optimal downforce, and according to the optimal downforce, adjusting and controlling the empennage of the target vehicle. The method improves the accuracy of road adhesion coefficient estimation and the accuracy of vehicle empennage control, thereby improving the safety and stability of vehicle driving, and can be applied to the technical field of vehicle control.

This invention discloses an anti-theft manhole cover for municipal engineering water supply and drainage, belonging to the field of municipal engineering technology. It includes a manhole base, a manhole cover body, a shock-absorbing rubber strip, a locking mechanism, and a concealed anti-theft unlocking component. The inner wall of the manhole base has a V-shaped groove, into which a shock-absorbing rubber strip with an internal buffer air chamber and anti-detachment ribs is embedded, significantly improving shock absorption, noise reduction, and self-cleaning performance through aerodynamic effects. The locking mechanism is located at the bottom of the manhole cover. Its pressure-bearing transmission component, when subjected to vertical vehicle loads, converts downward pressure into horizontal thrust, forcing the locking tongue to engage in the locking hole of the manhole base, preventing the manhole cover from eccentric jumping and circumferential rotation. The anti-theft unlocking component uses a concealed rotating rod with a dustproof camouflage cover to retract the linkage cable, pulling the locking tongue back to achieve manual unlocking. This achieves the linkage of adaptive locking, pneumatic buffering, and mechanical anti-theft, thereby eliminating the "road trap" hazard and extending the component's lifespan.

The utility model relates to the technical field of accessory welding machining, and discloses an automobile accessory welding bearing platform which comprises a supporting frame, a workbench is fixedly connected to the top of the supporting frame, a first limiting groove is formed in the workbench, a fixed base is slidably connected to the upper surface of the workbench, and an adjusting assembly is arranged on the upper surface of the fixed base. The adjusting assembly comprises a connecting handle, a second limiting groove is formed in the outer wall of the connecting handle, a first connecting rod is slidably connected to the outer wall of the second limiting groove, a second connecting piece is fixedly connected to the outer wall of the first connecting rod, and a first connecting piece is rotatably connected to the bottom of the second connecting piece. According to the device, the connecting handle is pressed downwards to drive the second connecting piece to move, the second connecting piece exerts downward pressure on the first connecting piece after being subjected to acting force, meanwhile, the circular fixing plate is disengaged, meanwhile, the position of the fixing base on the first limiting groove is moved to achieve the effect of fast adjusting and fixing, and the equipment utilization rate and the production efficiency are improved.

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

The present invention is directed to a novel vehicle configuration with at least one tunnel (2) enclosed inside the vehicle body, wherein the tunnel (2) comprises an inlet (9), an outlet (10) and a middle section forming a neck (14) of the tunnel (2), wherein the tunnel (2) is narrower at the neck (14) than at the inlet (9) and outlet (10) to achieve Venturi effect The tunnel (2) is applicable to any vehicle type, with all propulsion systems, and especially to electric sports cars. The vehicle configuration with the at least one enclosed tunnel (2) has the following main advantages: reduced drag coefficient, increased downforce, increased vehicle structural rigidity, and better stability of the vehicle travelling at high speeds.

The application provides a kind of wheel stable steering system, including the first driving part of the steering system of front wing assembly, which comprises a wheel core; a threaded part is arranged at the end of the wheel core away from the wheel rim upright column; the end of the wheel core close to the threaded part is threadedly connected with a locking nut through the wheel; a step part is arranged at the end of the threaded part away from the wheel rim upright column, two plug-in holes are arranged on the step part, which are axially symmetrical to the wheel core, a anti-dislocation device is arranged between the two plug-in holes, and the end of the anti-dislocation device extending outward through the plug-in hole axially limits the locking nut; the stable connection between the wheel and the first driving part is realized; the front wing assembly provides the down pressure for the vehicle wheel to realize the stable steering of the two vehicle wheels; and the front wing assembly can reduce the resistance of the vehicle wheel.

A row cleaner assembly includes an upper subframe mounted to an agricultural planter forward of the planter row unit and longitudinally aligned with the trench opening assembly. A lower subframe rotatably supports first and second row cleaner wheels. An intermediate subframe is pivotally connected at a forward end to the upper subframe and is pivotally connected at a rearward end to the lower subframe. A first and second linkages are pivotally connected at a forward end to the upper subframe and are pivotally connected at a rearward end to the lower subframe. An actuator system is capable of applying a downforce and an optional lift force to the lower subframe. The row cleaner assembly may include a gauge wheel supported by a rear strut subframe. The row cleaner assembly may include a depth selector to change the depth of penetration of the row cleaner wheels into the soil surface.

The invention discloses an all-terrain vehicle tire pressurizing type escape system and method, and belongs to the technical field of off-road vehicle auxiliary devices. The system comprises a fixed beam arranged on a frame; the force transmission mechanism forms a tripod structure; the arc-shaped pressing block is used for applying pressure to the tire; the simple inhaul cable system is arranged at the operable position on the side of the driver seat and connected with the force receiving sliding block. The escape method comprises the steps that a rider keeps a sitting posture, the gravity center of the body inclines forwards 0.5 seconds before stepping on an accelerator, and meanwhile the simple inhaul cable system is operated; the arc-shaped pressing block applies downward pressure to the upper surface of the tire through the inhaul cable driving force transmission mechanism; after pressure application is confirmed, accelerator acceleration is immediately followed, and the synergistic effect of body gravity center transfer, mechanical supercharging and power output is achieved. The normal pressure of the tire is actively increased in a mechanical mode, the adhesion coefficient of the tire and the ground is increased, and the problem of tire slipping when a vehicle is trapped is solved; a seat side control design is adopted, so that a single person can get out of trouble autonomously.

The utility model relates to the technical field of press machines, in particular to a hydraulic machine for manufacturing and processing automobile parts, which comprises a main body, a loading component is arranged at the top of the main body, and a pressure applying component is arranged on the side surface of the loading component; the gear on the side face of the electric hydraulic roller is meshed with the rack on the side face of the pressure rod, then the bottom end of the pressure rod exerts pressure on an object, and the press machine has the advantages of being easy to operate, wide in stroke range, completely adjustable in stroke and height position, small in operating force, large in pressure and high in working efficiency. Due to the fact that the electric press is driven by an electric motor to press downwards, an operator can use the minimum pressing force to meet the requirement for part pressing, the damping rod, the spring and the limiting end can guarantee that the electric press cannot crush a workpiece due to too large pressure, and convenience can be provided for disassembly and assembly of the press through the first clamping hoop, the second clamping hoop and the third clamping hoop.

The application discloses an automobile spoiler assembly and an automobile, and relates to the technical field of automobile aerodynamic outer decoration. The assembly comprises a lightweight composite outer decoration base body, a self-adaptive deformation wing plate, a flexible connecting support and a noise reduction component. The self-adaptive deformation wing plate is made of a memory alloy composite material and is internally provided with heating wires. The self-adaptive angle adjustment is realized by temperature control without the use of a motor and hydraulic drive. The low-speed flatness reduces wind resistance, and the high-speed bending increases the downforce. Meanwhile, the self-adaptive deformation wing plate can be heated to remove ice and snow. The flexible connecting support limits the deformation range, and the base body is embedded with a microporous sound-absorbing layer to absorb airflow noise. The application integrates the functions of self-adaptive deformation, active noise reduction and heating and ice removal. The structure is simplified, the failure rate is low, the lightweight strength is high, the application is suitable for full-condition driving and multi-model assembly, and the problems of poor working condition adaptation, large wind noise, complex structure and easy icing in winter of the traditional spoiler are effectively solved.

Motor-vehicle, in particular a supercar with a rear engine, comprising: - a front hood (1) configured to be moved from a closed position to an open position, and vice versa, provided with at least one series of louvers (2) to allow airflow passage from the inside to the outside of the hood (1), - a front trunk (3) covered by the hood (1) in the closed position, comprising a bottom wall (4) equipped with at least one opening (5) to allow air flowing from a front underbody part of the vehicle, towards the hood (1), - an air conveying device (6) arranged within the front trunk (3), configured in fluid communication with said at least one opening (5) and said at least one series of louvers (2), in such a way that the airflow flowing along the front underbody part can pass through the front trunk (3) and flow out from the louvers (2), generating a downforce effect in the front area of the vehicle.

The utility model discloses a device for supplementing air pressure, which comprises an aerosol can, a bottle cap and a valve rod, the aerosol can is opened when the valve rod moves downwards, the aerosol can is closed when the valve rod moves upwards, a piston and a valve seat which are positioned above the valve rod are arranged in the bottle cap, and a lever switch and an elastic torsion mechanism for driving the lever switch to rotate are rotatably connected onto the valve seat. A boss is arranged on the lever switch and abuts against the side face of the valve rod under the action of an elastic torsion mechanism, and a positive pressure chamber for providing downward pressure for the piston when the piston moves upwards is arranged in the bottle cap. The bottle cap is communicated with the outer side, high-pressure fluid on the outer side can enter the bottle cap and acts downwards to push the piston and the valve seat upwards so as to drive the lever switch to move upwards to enable the boss to be separated from the side face of the valve rod, and the boss rotates to the position above the valve rod under the action of the elastic torsion mechanism. The piston and the valve seat are pressed on the valve rod through the boss to push the valve rod to move downwards to open the aerosol can for air supply.

A downward force control system of a host vehicle includes: at least one module configured to generate a first biased lower boundary and a first biased upper boundary; a parameter module configured to determine a current under-steer angle of the host vehicle; an adaptive bias bounding module configured to generate under-steered and over-steered multipliers based on the current under-steered angle; a fusion module configured to generate a second offset lower boundary and a second offset upper boundary based on the first offset lower boundary, the first offset upper boundary, and the under-steered and over-steered multiplier; and a downward force tracking module configured to adjust a position of one or more downward force devices of the host vehicle based on the second offset lower boundary and the second offset upper boundary.

The invention discloses a bottom protection plate assembly, a vehicle and a control method of the vehicle, and belongs to the technical field of vehicles, the bottom protection plate assembly comprises a base, a flexible protection plate and an adjusting mechanism, the base is used for being connected with the bottom of the vehicle body, the flexible protection plate is used for being installed at the bottom of the vehicle body, and the flexible protection plate is provided with a first side and a second side which are arranged away from each other; the first side faces the top of the vehicle body, and the adjusting mechanism is connected with the base and suitable for adjusting the flexible protection plate to be bent towards the second side. Thus, the vehicle has large downward pressure, the tire is in closer contact with the ground, and the road holding force of the tire is increased. And during high-speed driving, the stability and safety of the vehicle can be improved through larger road holding force, and the risks of sideslip and out-of-control are reduced.