66results about How to "Reduce steering effort" patented technology

The invention relates to the field of electromechanical systems and motor vehicle application, and in particularly relates to a 5-ton-class circulating ball type dual-mode electric power steering device. The electric power steering device comprises a steering device housing assembly, an input shaft and screw assembly, a sector shaft assembly, a supporting base assembly, a turbine, a worm, an inner end cap assembly, a rotating angle and torque sensor, an outer end cap assembly, a plum connecting sleeve assembly and a motor assembly. A motor serves as a power source; power is transmitted to the input shaft and screw assembly via a worm gear and the worm, and the input shaft and screw assembly outputs torque and angle displacement via a sector shaft. The 5-ton-class circulating ball type dual-mode electric power steering device has two control modes of angle (position) and torque (assisting power).

During impact of an opening solid-material bullet, a slightly concave or substantially blunt-nosed nose structure of at most 1.2× caliber is provided to such a bullet by mushrooming to generate a blast wave. The bullet opens to a size that is 1.1 to 1.15× caliber. The mushrooming is achieved by arranging on the nose of the bullet a cavity that is in the direction of the center axis of the bullet and has a substantially even-sized diameter.

The invention provides a wire-control four-wheel independent steering system based on a universal transmission structure. The system comprises a rotary motor (1), a reducer (2), a buffer device (3), a drive shaft (4), a McPherson suspension system (5), a rotating device (6), a transmission device (8) and a ball universal joint (9). the power of the rotary motor (1) is input in the transmission device (8) through the ball universal joint (9) and the drive shaft (4); the direction and size of the rotary movement are changed by a gear pair (7); a steering knuckle is driven by the rotating device (6) to rotate to realize rotating angle between minus 90 DEG to plus 90 DEG. Because of the constant velocity of the ball universal joint, the linear relationship between input angle and wheel turning angle does not change with the change of positioning parameters which increases the ability of the control system to resist external disturbance and enhance its robustness. At the same time, the structure reduces the kingpin inclination angle by the outward movement of the arrangement of the transmission device (8) to increase the driving stability.

A steering device of a power-driven child vehicle comprises a steering wheel, a steering rod, a planet gear reducer, a steering front fork and wheels. The steering wheel is connected with the planet gear reducer through the steering rod, speed reduction and torque increase of input of the steering wheel are achieved through the planet gear reducer, and the steering front fork is driven to drive the wheels to perform steering. By setting a transmission ratio of the planet gear reducer, torque required by the steering wheel when the wheels perform steering can be reduced effectively, and steering difficulty is reduced. By means of the steering device, control force during steering of the child vehicle can be reduced, use difficulty of the child vehicle is reduced, the rotation angle of the steering wheel during steering can be enlarged effectively, and playability of the child vehicle is improved.

The invention discloses a control method of an electro-hydraulic type power-assisted steering system. The system comprises a motor, an energy accumulator, a hydraulic pump, an oil storage groove, a steering valve, a steering power-assisted cylinder and a control unit and the like, wherein a look-up table for data of the threshold value range of oil pressure of the energy accumulator is preset in the storage of the controller, and the data the threshold value range of oil pressure of the energy accumulator corresponds to the size of the needed assisting steering power calculated according to parameters such as the speed and the steering torque and the like of a vehicle; when the steering occurs, the control unit obtains the upper and lower limit threshold value of the oil pressure of the needed energy accumulator by acquiring signals such as the speed and the steering torque and the like of the current vehicle and inquiring in the look-up table. In the control method, the corresponding size of the assisting power can be provided according to the driving condition and the current assisting power need of the vehicle, the controllability of the vehicle in steering is effectively improved and the energy consumption is saved.

The invention provides a power steering device. The device comprises a housing assembly (1), an input shaft and screw assembly (2), a toothed fan shaft assembly (3), a corner torque sensor (8), and a motor assembly (11), wherein the corner torque sensor is axially connected with an input shaft and a screw shaft by rotating the input shaft forward or backward through a steering wheel; according to the state information (such as a vehicle speed, a turning radius and a road surface inclination) of a travelling vehicle and vehicle structure characteristics (such as a tread, a wheel base and weight), at different speeds, a system dynamically predicts and analyzes to obtain the maximum angle alpha0 permitted by the steering wheel under the assumption that a vehicle is in a critical state of rollover or sideslip; when a driver controls the vehicle over the time of the maximum angle, the system drives a motor to increase a steering resistance reversely and rapidly and prevent the steering wheel from turning, thereby effectively avoiding the rollover or sideslip of the vehicle when the driver controls the vehicle. The power steering device can intelligently calculate the maximum angle permitted by the steering wheel, thereby improving the safety degree of the steering device.

The invention provides a housing assembly of an electric power steering device and a device of same. The housing assembly comprises a first installation cavity, a second installation cavity and a third installation cavity, wherein the first installation is arranged along a horizontal direction and a non-through cavity; the second installation cavity is a non-through cavity; the third installation cavity is a through cavity; the first installation cavity communicates with the second installation cavity; the first installation cavity communicates with the third installation cavity; and the second installation cavity does not communicate with the third installation cavity. The housing has great overall strength and can stand complicate shock and vibration and has reliable use; the housing assembly has great technology property and is easy to process and form; low cost is required, so the housing assembly is suitable for batch production and has high integrating degree and great assembling performance; and the housing assembly is applied to the steering device.

The invention relates to a central steering type independent suspension suitable for serving as an independent suspension of a commercial vehicle. The suspension comprises a spring, a thrust bearing, a hollow section steel structure, two upper cross arms, a steering knuckle and two lower cross arms, wherein the hollow section steel structure is arranged on the steering knuckle; an air spring is connected with the hollow section steel structure through the thrust spring; when the position of the spring is set, the axis of the spring is connected with a ground imprinting center through a tire; the outer ends of the upper cross arms are connected with the hollow section steel structure through spherical hinges; the outer ends of the two lower cross arms are connected to the steering knuckle through spherical hinges; the inner ends of the upper cross arms and the lower cross arms are connected to a car frame through spherical hinges. The suspension is simple and reasonable in structure; a swing arm on the suspension is flexibly arranged in height, the lateral force on a ball pin of the swing arm is small, the road feel is good, the steering force and the impact force transmitted to a steering wheel are small, and the aligning torque required for wheels in a low-speed state can be reasonably provided.

The invention provides a power steering device of an intelligent computing motor target torque. The power steering device comprises a housing assembly (1), an input and screw rod assembly (2), a gear sector shaft assembly (3), a corner torque sensor (8) and a motor assembly (11). When an input shaft is rotated forwardly or backwardly by a steering wheel, the input shaft is connected with a screw rod shaft by an elastic torsion bar and a certain angle is formed between the input shaft and the screw rod shaft, the screw rod shaft can coaxially rotate with the input shaft as the screw rod shaft and the input shaft reach an angular displacement banking limit; the corner torque sensor shaft is axially connected with the input shaft and the screw rod shaft; and the control system computes a target torque of the motor assembly via collecting an output torque value of the corner torque sensor, and drives the motor assembly to output an assisting torque via a torque control mode. The target torque of the motor assembly can be intelligently computed and the motor assembly can be driven to output the assisting torque via the torque control mode, so intelligence degree of the steering device can be improved.

Regulating apparatus for a descender comprises a spool 40, a line 48 wound upon the spool 40 to be drawn off during a descent and a fan 44 or similar brake operative upon the spool to limit its speed of forward rotation and hence the rate of descent. The inertial retarding effect of the moment of inertia of the spool 40 is overcome by an electric motor 42 arranged to accelerate the spool 40 during an initial part of the descent. A free-wheeling tether 50 for the line 48 prevents overrun of the spool 40 from picking up the line 48 at the end of a descent. The motor 42 may be run in reverse to rewind the line 48 after a descent.

The invention relates to a patient transfer device suitable for people unable to move freely. A first supporting plate, a second supporting plate and a third supporting plate can be divided into a first supporting area and a second supporting area which are capable of rotating relatively, the lying posture of people unable to move freely can be switched into a turnover posture, and the gravity center of people unable to move freely can be driven to move along a second direction, so that the vertical distance between the projection of the gravity center of people unable to move freely in a direction approximately perpendicular to the ground and the axis of a roller along a second direction can be switched from a state smaller than a set threshold value into a state larger than the set threshold value. In a first use form, the width of the roller along the second direction can be larger than that of a bottom plate, and the width of the roller is decreased when the roller is switched fromthe first use form into a second use form, so that the vertical distance can be switched from the state larger than the set threshold value to the state smaller than the set threshold value accordingto the mode that the axis moves along the second direction.

The invention provides a vehicle steering gear power-assisted steering mechanism. The power-assisted steering mechanism comprises a steering gear, steering tie rods, a left expansion sheath, a right expansion sheath and a power-assisted air pipe. The steering gear comprises a protective cover, a rack, a gear and spherical heads. The gear is connected with a steering disk. The rack comprises an engaging tooth part and a limiting part which are arranged from left to right. The engaging tooth part is engaged with the gear. The gear and the engaging tooth part are covered with the protective cover. The left and right ends of the rack are provided with the spherical heads. Steering balls are fixed to the ends of the steering tie rods. The steering balls are mounted in the spherical heads. The left expansion sheath and the right expansion sheath are mounted at the left and right ends of the rack correspondingly. Fixing rings are mounted on the steering tie rods. the two ends of the left expansion sheath are in sealing connection with the corresponding fixing ring and the protective cover correspondingly. The two ends of the right expansion sheath are in sealing connection with the limiting part of the rack and the corresponding fixing ring correspondingly. The two ends of the power-assisted air pipe communicate with the left expansion sheath and the right expansion sheath correspondingly. Through the vehicle steering gear power-assisted steering mechanism, the problems that the steering disk is hard to steer and the using comfort degree is low are solved.

The invention discloses a new-energy automobile hydraulic detection system. The system is characterized in that the system comprises a controller, a voice module, a state detection module and a hydraulic power assisting module, the voice module, the state detection module and the hydraulic power assisting module are connected with the controller, the hydraulic power assisting module comprises an oil tank, a high-pressure oil outflow pipe, a braking control pump, a motor driver, a motor, a speed reduction mechanism, a low-pressure oil return pipe, a steering control pump, a steering gear and afilter, the oil tank is connected with the high-pressure oil outflow pipe, the steering control pump and the braking control pump are connected with the high-pressure oil outflow pipe and sequentiallyconnected with the low-pressure oil return pipe, the braking control pump, the motor driver, the motor and the speed reduction mechanism, the steering control pump is connected with the steering gear, the low-pressure oil return pipe, the filter and the oil tank are sequentially connected, an automobile steering assisting system reduces steering strength of a driver and enhances controllability,automobile traveling is assisted, and vehicle accidents are reduced.

The invention discloses a hydraulic booster type power monitoring system for a new energy vehicle. The hydraulic booster type power monitoring system for the new energy vehicle is characterized by comprising a hydraulic power assisted module, a state detection module, a protection module, a fuel cell control center and a vehicle total controller; the protection module, the hydraulic power assistedmodule, the state detection module and the vehicle total controller are correspondingly connected with the fuel cell control center; the fuel cell control center comprises an A/D converter, a DSP unit, a CAN unit and a driving circuit; the A/D converter, the CAN unit and the driving circuit are correspondingly connected with the DSP unit; and the DSP unit is connected with the vehicle total controller through the CAN unit. Safety measures widely applied to the field of vehicles only have several indirect assistant effects at present; a vehicle steering power system reduces driver steering force and enhances the controllability; and the hydraulic booster type power monitoring system for the new energy vehicle directly has an assistant effect on vehicle running so that vehicle accidents arereduced.