19results about How to "Improve cornering performance" patented technology

The utility model discloses a guide structure for a railway vehicle, a bogie and the railway vehicle, the guide structure comprises a first rotating support, a second rotating support and a third rotating support, the first rotating support is provided with a first guide wheel suitable for being in contact with a track beam; a second guide wheel suitable for being in contact with the track beam is arranged on the second rotating bracket; the linkage piece is in linkage with the first rotating support and the second rotating support so that the first rotating support and the second rotating support can move along with each other, and the rotating directions of the first rotating support and the second rotating support are opposite. According to the guide structure designed by the utility model, the stress of the guide wheel can be reduced, and the turning capacity of the railway vehicle is improved.

The utility model discloses an electric flat carriage capable of turning freely, which relates to the technical field of electric flat carriages, and adopts the technical scheme that the electric flat carriage comprises an electric flat carriage body, a mounting shaft is mounted on the lower surface of the electric flat carriage body through a bearing, and a rotating gear body is arranged on the outer surface of the mounting shaft; the mounting ring is mounted on the lower surface of the mounting shaft, a mounting frame is fixedly connected to the lower surface of the mounting ring, and a moving wheel body is arranged on the back face of the mounting frame; the rack plate body is mounted on the left side surface of the rotating gear body, and the rack plate body and the rotating gear body are meshed with each other, so that the rotating gear body can drive the mounting shaft to rotate, the mounting shaft can drive the mounting ring and the mounting frame to rotate, and therefore, the angle of the moving wheel body can be quickly adjusted; and the four groups of moving wheel bodies can complete the same operation, so that the whole turning effect of the electric flat carriage body is better.

The invention discloses a covered stent, which relates to the technical field of interventional medical instruments and comprises a covered stent section and bare stent sections connected to two axial ends of the covered stent section. The covered stent section comprises a stent main body in a pipe network shape and a tubular covering film covering the surface of the stent main body; the bare stent section comprises a bare stent connected to the axial end part of the covered stent section; the bare stent is formed by weaving a first metal wire in a spiral spring shape, and the stent main body is formed by weaving a second metal wire in a spiral spring shape; and the bare stent is loaded with an anti-hyperplasia drug. The bare stents are arranged at the two ends of the covered stent section, the anti-hyperplasia medicine is loaded on the bare stents, the bare stents are formed by weaving the first metal wires in the spiral spring shape, the bare stents can better conform to the inner cavity of a blood vessel, stimulation to the blood vessel is reduced, and therefore hyperplasia of smooth muscle cells of the blood vessel is reduced; the anti-hyperplasia drug can inhibit hyperplasia of vascular smooth muscle cells, and finally the situation that the two ends of the covered stent are narrow is prevented or reduced.

The vehicle driving system and the vehicle are used for solving the technical problems that a four-wheel independent driving system is low in working condition efficiency, large in left and right torque consistency control difficulty and high in cost. The vehicle driving system comprises a driving motor, a first planetary gear train and a second planetary gear train which are of the same structure and can transmit torque output by the driving motor to a left half shaft and a right half shaft respectively, and a first clutch and a second clutch which are connected between the driving motor and the first planetary gear train and between the driving motor and the second planetary gear train respectively. The differential mechanism comprises a differential gear, two elements with the same steering trend in the first planetary gear train and the second planetary gear train are meshed with the differential gear, the central axes of the two elements are collinear, and the differential gear is meshed with the differential gear. The drive axle housing is connected with the differential gear and is perpendicular to the central axis of the differential gear, and the brake is connected between the differential gear and the drive axle housing.

The present invention provides a tire for a two-wheeled motor vehicle, which suppresses a decrease in grip force in the lateral direction during drive turning and improves turning performance. The tire for a two-wheeled motor vehicle is a tire (10) for a rear wheel of a two-wheeled motor vehicle, which has a carcass (1) extending annularly across a pair of bead sections (13) as a skeleton, and is provided with a spiral belt (2) formed by helically winding a belt cord in the circumferential direction of the tire on the outside of the carcass in the radial direction of the tire. The belt cord has a 1 * N structure, and the belt cord removed from the tire has an elongation of greater than 0.3% and less than 0.7% when a load of 50 N is applied thereto.

The utility model belongs to the technical field of medical apparatus and instruments, concretely relates to a score structure and score balloon, score structure includes the score silk at the surface of balloon and is provided with the fixing piece at the both ends of score silk, the fixing piece is annular hollow structure, the one end away from score silk on the fixing piece is provided with the fixed ring, the utility model has high connecting strength, is not easy to fall off, further improves the overbending capacity, reduces the operation risk, improves the security.

The vehicle driving system and the vehicle are used for solving the technical problems that a four-wheel independent driving system is low in working condition efficiency, large in left and right torque consistency control difficulty and high in cost. The vehicle driving system comprises a driving motor, a first planetary gear train, a second planetary gear train and a differential mechanism, the first planetary gear train and the second planetary gear train can transmit torque output by the driving motor to a left half shaft and a right half shaft respectively, and the differential mechanism comprises a first differential gear and a second differential gear which are meshed with each other. Two elements with the same steering trend in the first planetary gear train and the second planetary gear train are meshed with the first differential gear and the second differential gear respectively, and the first clutch and the second clutch are connected between the driving motor and the first differential gear and between the driving motor and the second differential gear respectively. The first clutch and the second clutch are arranged on the left half shaft and the right half shaft and at least have a semi-clutch state and a complete separation state so as to adjust the torque transmitted to the left half shaft and the right half shaft by the driving motor, and at most one of the first clutch and the second clutch is in the semi-clutch state.

The present invention provides a motorcycle tire for use on uneven terrain. In the motorcycle tire for use on uneven terrain, excellent traction performance and cornering performance are exhibited. The motorcycle tire for use on uneven terrain has a tread portion (2). The tread portion (2) includes: a base surface (8) and a plurality of pattern blocks (10) protruding from the base surface (8) toward the outer side of the tire radial direction. At least one of the plurality of pattern blocks (10) includes a convex pattern block (15). The convex pattern block (15) includes: a pattern block body (16) and at least one convex portion (17) extending along the tire circumferential direction with a width smaller than the tire axial direction of the pattern block body (16). At least the convex portion (17) of the convex pattern block (15) is connected to the base surface (8) via a first base portion (21).

The invention discloses a rail transport vehicle which comprises a carriage and bogies, the bogies comprise the first bogie, the first bogie comprises a first frame body, a first wheel set and a differential transmission device, and the first wheel set is rotatably installed on the first frame body; the first wheel set is suitable for being in rolling fit with the track so as to drive the carriage to run along the track through the first frame body. Wherein the first wheel group comprises two driving wheels which are oppositely arranged in the width direction of the carriage, the two driving wheels are in power connection through a differential transmission device, and the differential transmission device is configured to adjust the rotation speed ratio of the two driving wheels. According to the rail transport vehicle, the rotation speed ratio of the two driving wheels can be adjusted through the differential transmission device so as to adapt to curve running, and therefore the first bogie can drive the carriage to achieve turning under the extremely-small turning radius, and the turning performance of the rail transport vehicle is improved.

The vehicle driving system and the vehicle are used for solving the technical problems that a four-wheel independent driving system is low in working condition efficiency, large in left and right torque consistency control difficulty and high in cost. The vehicle driving system comprises a driving motor, a first planetary gear train, a second planetary gear train, a first clutch connected between the driving motor and the first planetary gear train, a second clutch connected between the driving motor and the second planetary gear train, and the first clutch and the second clutch at least have a semi-clutch state and a complete joint state. The differential mechanism comprises a first differential gear and a second differential gear which are meshed with each other, and two elements with the same steering trend in the first planetary gear train and the second planetary gear train are meshed with the first differential gear and the second differential gear respectively; and the transmission shaft is connected between one of the first differential gear and the second differential gear and the drive axle housing.

The utility model belongs to the technical field of pattern tires, and particularly relates to a pattern tire for desert operation, which comprises a tread, transverse zigzag main pattern grooves are formed in the surface of the tread, transverse zigzag pattern grooves are formed in the surface of the tread, and crown middle diamond pattern blocks are arranged on the surface of the tread. Crown side rhombic pattern blocks are arranged on the surface of the tread and are positioned on the right sides of the crown middle rhombic pattern blocks. Through the arrangement of the third thin groove, the fourth thin groove, the pattern thin groove and other groove structures and the cooperation of the groove bottom reinforcing ribs, the trafficability and controllability of the tire are guaranteed, sand is effectively discharged, the heat dissipation performance is guaranteed, the tire is not prone to slipping on the soft sand road surface, abrasion is reduced, groove bottom deformation under high loads is reduced, the tire tread plays a role in protecting the tire body, and the service life of the tire is prolonged. And under the action of the reinforcing balls and the protective sheets, the durability of the reinforcing ribs at the bottoms of the grooves can be improved.

The present invention belongs to the technical field of drive axle control, and specifically discloses a vehicle drive axle control system and a control method, the system comprising: a user collection and identification module, a vehicle safety monitoring module, a vehicle safety confirmation module, a vehicle road monitoring module, a vehicle power confirmation module, a vehicle route monitoring module, a vehicle speed confirmation module, a database and a vehicle driving control terminal; the present invention ensures the user's personalized use experience by confirming the anti-collision safety control information and anti-deviation safety control information of the vehicle according to the user's historical driving information, thereby improving the user's driving safety and improving the energy utilization efficiency. At the same time, by confirming the speed distribution information of the vehicle drive axle according to the steering information when the vehicle travels to the turning area, the turning performance of the vehicle is improved, thereby reducing the wear of the tire, and then ensuring the lateral stability of the vehicle when turning.

The application discloses a vehicle and a method and device for controlling the vehicle to turn in place. The method comprises the following steps: in response to a turning-in-place function starting signal of the vehicle, obtaining a driving mode, a vehicle speed, a steering angle and a steering direction of the vehicle; when it is determined that the vehicle meets the turning-in-place function starting condition according to the driving mode, the vehicle speed and the steering angle, determining a target wheel according to the steering direction; and applying a braking force to the target wheel or locking the target wheel to make the vehicle turn in place. Thus, the minimum turning purpose of the vehicle can be achieved, the vehicle can more smoothly complete the turning-in-place, the turning performance of the vehicle is improved, and the problem of personal safety or property safety caused by poor turning performance of the vehicle during vehicle driving is reduced.

The vehicle driving system and the vehicle are used for solving the technical problems that a four-wheel independent driving system is low in working condition efficiency, large in left and right torque consistency control difficulty and high in cost. The vehicle driving system comprises a driving motor, a first planetary gear train and a second planetary gear train, the first planetary gear train and the second planetary gear train are of the same structure and can transmit torque output by the driving motor to a left half shaft and a right half shaft respectively, and two elements, with the same steering trend, in the first planetary gear train and the second planetary gear train are meshed with each other. One of the first planetary gear train and the second planetary gear train is connected with the drive axle housing through a brake, the first clutch is connected between the drive motor and the first planetary gear train, the second clutch is connected between the drive motor and the second planetary gear train, and the first clutch and the second clutch at least have a semi-clutch state and a complete joint state. The torque transmitted to the left half shaft by the driving motor through the first planetary gear train is adjusted, and the torque transmitted to the right half shaft by the driving motor through the second planetary gear train is adjusted.

The present invention relates to the technical field of tunnel boring machines, and specifically to a multi-stage slag discharge device for TBMs, wherein a first-stage belt conveyor is arranged in the shield of the TBM and is a retractable structure; an intermediate-stage belt conveyor is arranged on each trailer except the tail trailer, and the head driving part of the first-stage belt conveyor and the tail slag receiving part of the adjacent intermediate-stage belt conveyor are overlapped up and down, and the adjacent intermediate-stage belt conveyors are overlapped head-to-tail in sequence; the final-stage belt conveyor is arranged on the tail trailer, and its tail is overlapped with the head of the adjacent intermediate-stage belt conveyor, and its head is overlapped with the slag receiving vehicle, and adjustment devices are installed on both sides of the head and tail of the intermediate-stage belt conveyor and the final-stage belt conveyor for adjusting their positional relationship with the trailer. A multi-stage slag discharge method for a small turning radius TBM of a pumped storage power station, using the above-mentioned device to discharge slag. The present invention solves the problems of slag spillage, falling and deviation of belt conveyors during slag discharge.

The invention relates to the technical field of mine underground trackless equipment, and discloses a swing frame device of an underground mine transporting truck and a vehicle, the swing frame device comprises two bridge fixing plates, the two bridge fixing plates are respectively provided with a limiting block, the two bridge fixing plates are connected through a front vertical plate and a rear vertical plate, coaxial vertical plate round holes are respectively formed in the front vertical plate and the rear vertical plate, and the limiting blocks are arranged in the vertical plate round holes. A rotary mandrel is welded in the vertical plate round hole, a shaft sleeve is assembled outside the rotary mandrel, and a gland is arranged at the end, away from the vertical plate round hole, of the shaft sleeve. Through transverse swing of the swing frame device, it is guaranteed that when the underground mine transporting truck walks in a four-wheel-driven mode, the underground mine transporting truck touches the ground all the time so as to adapt to underground severe working conditions; the swing frame device depends on the drive axle, so that the mounting space is saved, the vehicle wheelbase is favorably reduced, and the vehicle turning performance is improved; the design of the assembled limiting block facilitates adjustment of the swing angle, enlargement of the contact area with the rack and reduction of the contact stress, and the annular oil groove is formed in the shaft sleeve, so that the service life is prolonged.

The application discloses a kind of double active hinged shield machine cooperative steering control system and control method thereof, it is related to tunneling equipment steering control technical field.The double active hinged shield machine cooperative steering control system includes data acquisition unit, controller and execution unit, controller built-in cooperative operation, PID adjustment, safety constraint and machine jam prevention and control module.The double active hinged shield machine cooperative steering control method, total turning angle is calculated by geometric formula, split to two levels according to distribution coefficient Hinge, adopt inner ring position closed loop+outer ring tail shield correction Double closed loop architecture realizes accurate steering, real-time constraint hinge angle difference and execute over-limit compensation, simultaneously by multi-factor comprehensive evaluation realizes machine jam risk grading prevention and control and active escape.This application can realize 15~30m super-small turning radius, improve trajectory accuracy and equipment reliability, build whole-process machine jam prevention and control system, applicable to small-curvature complex tunneling working condition.

The present invention discloses a multi-degree-of-freedom automobile active aerodynamics kit, including a multi-degree-of-freedom active rear wing, an active diffuser and an active front lip. The multi-degree-of-freedom active automobile rear wing is fixed on the trunk cover of a motor vehicle. The multi-degree-of-freedom active automobile rear wing includes a rear wing bottom plate, a rear wing main plate, an electric push rod and a slider. The rear wing bottom plate is used to be fixedly connected to the trunk cover of the motor vehicle. One end of the electric push rod is fixed to the rear wing bottom plate, and the other end is hinged to the slider. The slider is connected to the rear wing main plate. Compared with the prior art, by adding a multi-degree-of-freedom active rear wing, the rear wing can be raised, lowered and tilted according to different vehicle speeds and driving modes to meet the aerodynamic needs in various states, ensure the stability of the vehicle during driving, reduce the wind resistance coefficient during normal driving, and improve the cornering performance of the vehicle under high-speed driving.

The vehicle frame structure with a liftable axle of the present invention comprises a vehicle frame and one or more axles arranged below the vehicle frame, the axles are composed of axles and leaf springs, front and rear suspensions are fixed below the vehicle frame, the front suspension and rear suspension are respectively provided with front pads and rear pads, the front pads and rear pads are located between the ends of the leaf springs and the inner arc plate of the suspension; the front suspension is provided with a front pad pin for fixing the front pad, and the rear suspension is provided with a rear pad pin for fixing the rear pad. The vehicle frame structure with a liftable axle of the present invention, when the vehicle has insufficient traction on an uphill section, the front and rear pads are unloaded, the bearing point of the axle is moved backward, the axle load is reduced, the saddle load is increased, the pressure of the tractor on the ground is increased, and the traction is increased, so that the climbing performance of the vehicle is increased, the tire slip is avoided, the turning performance of the vehicle is increased, and the service life of the tire is extended.