Jie Li

Bio: Jie Li is an academic researcher from Zhejiang University. The author has contributed to research in topics: Mechanism (engineering) & Materials science. The author has an hindex of 2, co-authored 5 publications receiving 11 citations.

Crank-connecting rod mechanical steering mechanism

Abstract: The invention discloses a crank-connecting rod mechanical steering mechanism which comprises a steering handlebar, a steering shaft, a crank, a rotating hinge, a connecting rod, a spherical hinge, a steering strip housing, a steering strip and the like; wherein the steering handlebar is connected with the steering shaft by an upper bracket and a lower bracket, the steering shaft is sequentially connected with the crank, the rotating hinge, the connecting rod, the spherical hinge and the center of the steering strip, the steering shaft is externally provided with a steering column tube and is connected with a tapered roller by a steering bushing, the steering column tube is externally provided with a steering column tube supporting seat, the steering strip is externally provided with the steering strip housing which is opened with a spherical hinge chute, two ends of the steering strip are connected with a steering knuckle by a tie rod, and the steering column tube supporting seat and the steering strip housing are connected with a chassis. The mechanism effectively solves the spatial arrangement problem that the steering shaft is placed in the middle and two ends of the steering strip output symmetrically, simultaneously, wider range of wheel turn angles and reasonable inner deflection angles and outer deflection angles are realized; therefore, the mechanism has the advantagesof reasonable structure, simple operation and convenient mounting and the like.

Handle type mechanical steering mechanism

Abstract: The utility model discloses a handle type mechanical steering mechanism, comprising a steering handle, an upper bracket, a lower bracket, a steering shaft, a steering column tube, a steering column tube support, a universal joint, a rack-and-pinion gear set, a horizontal pull rod and a steering knuckle; the steering handle is connected with the steering shaft by the upper bracket and the lower bracket, the steering shaft is connected with the rack-and-pinion gear set by the universal joint, the steering column tube is connected outside the steering shaft and is connected with a tapered roller by a steering lining, the steering column tube support is arranged outside the steering column tube, one end of the rack-and-pinion gear set is connected with the universal joint by the horizontal pull rod, and the other end of the rack-and-pinion gear set is connected with the steering knuckle, and the steering column tube support and the rack-and-pinion gear set are connected with a carriage The handle type mechanical steering mechanism effectively solves the problems of middle arrangement of the steering handle and spatial layout of symmetrical output of two ends of the steering rack, can realize carriage wheel rotating angle and rational carriage wheel inner and outer drifting angles in a large range and has the advantages of rational structure, simple operation and convenient installation and the like

Transmission link type gear shifting control mechanism

Abstract: The utility model discloses a transmission link type gear shifting control mechanism, which comprises a gear shifting controller, a gear shifting stay rope, a link, a rocker arm and a power variable-speed shaft, wherein the gear shifting controller is sequentially connected with the gear shifting stay rope, the link, the rocker arm and the power variable-speed shaft. The link is divided into threesections which are mutually perpendicular in space, a ball-shaped hinge is utilized between the end of the first section of the link and the gear shifting stay rope, a rotational hinge is utilized between the second section of the link and a vehicle frame, and a rotational hinge is utilized between the end of the third section of the link and one end of the rocker arm. The other end of the rockerarm is equipped with a square hole, one end of the power variable-speed shaft is equipped with a square connector engaged with the square hole of the rocker arm, and the rocker arm is integrally connected with the power variable-speed shaft through nuts and gaskets. The transmission link type gear shifting control mechanism has the advantages of reasonable structure, simple control and convenientmounting.

Remote gear shifting control mechanism for gearbox

Abstract: The utility model discloses a remote gear shifting control mechanism for a gearbox, which comprises a gear shifting controller, a gear shifting guy cable, a connecting rod, a pull rod, a rotating arm and a power variable-speed shaft, wherein, the gear shifting controller is connected in sequence with the gear shifting guy cable, the L-shaped connecting rod, the pull rod, the rotating arm and the power variable-speed shaft in sequence, a spherical hinge is adopted between the right end of the L-shaped connecting rod and the gear shifting guy cable, a rotary hinge is adopted between the middle part of the L-shaped connecting rod and a vehicle frame, a spherical hinge is adopted between the upper end of the L-shaped connecting rod and the pull rod, a rotary hinge is adopted between one end of the rotating arm and the pull rod, a square hole is formed at the other end of the rotating arm, and a square joint matched with the square hole on the rotating arm is arranged at one end of the power variable-speed shaft and connected with the rotating arm and the power variable-speed shaft to be a whole through a nut and a gasket. The utility model has the advantages of reasonable structure, easy manipulation and convenient installation.

Length adjuster and clamping mechanism for a steering mechanism

Abstract: The steering mechanism includes a center link which extends between opposite longitudinal ends. Each end has a bore with threads which are spaced from the end by an unthreaded portion. A tie rod includes a bore with threads that are spaced form an end of the tie rod by an unthreaded portion. A length adjuster threadedly connects one of the longitudinal ends of the center link with the tie rod. The length adjuster includes threaded sections and an unthreaded middle section. The unthreaded middle section overlaps with the unthreaded portions of the center link and tie rod bores respectively. A first clamp is clamped around the overlapping unthreaded portion of the center link bore and the unthreaded middle section of the length adjuster, and a second clamp is clamped around the overlapping unthreaded portion of the tie rod bore and the unthreaded middle section of the length adjuster.

Single-rod speed change control mechanism and speed changer and right rudder vehicle

Abstract: Provided is a single-rod speed change control mechanism. The single-rod speed change control mechanism comprises a control device (1) and a telescopic rod (2). The control device (1) comprises a limit disc (3) and a control rod (4) arranged in the limit disc (3). The single-rod speed change control mechanism further comprises an intermediate connection assembly (6), and the control rod (4) is connected with the telescopic rod (2) through the intermediate connection assembly (6). The invention further provides a speed changer which comprises the single-rod speed change control mechanism and a right rudder vehicle. Since the control rod can be connected with the telescopic rod through the intermediate connection assembly, the speed change control mechanism can be improved on the basis of an original left rudder vehicle, and majority components of the speed change control mechanism are arranged on the left side of a vehicle. The control device is arranged on the right side of the vehicle so that the single-rod control mechanism of the right rudder vehicle is conveniently arranged, and simultaneously the module design of the speed change control mechanism can be strengthened, and universality of the speed change control mechanism of a left rudder vehicle and the right rudder vehicle is improved.

Parallelogramic four-wheel steering mechanism

Abstract: The invention aims to provide a parallelogramic four-wheel steering mechanism, comprising a chassis, rotating shafts, a wheel supporting frame and wheels The invention is characterized in that the parallelogramic four-wheel steering mechanism also comprises connecting rods and cross rods, wherein, the connecting rods comprise a first connecting rod to a fourth connecting rod; the cross rods comprise a first cross rod and a second cross rod; the wheels are installed on the chassis through the wheel supporting frame and arranged at the lower side of the chassis; the chassis is of a quadrilateral structure; four rotating shafts are respectively arranged on the four corners of the chassis; one end of each connecting rod is respectively arranged on the four rotating shafts; the first cross rod is arranged at the middle of the first connecting rod and the second connecting rod and connected with the first connecting rod and the second connecting rod; the second cross rod is arranged at the middle of the third connecting rod and the fourth connecting rod and connected with the third connecting rod and the fourth connecting rod; and the first cross rod is parallel to the second cross rod with each other The steering mechanism has the advantages of flexible steering and small turning radius; and meanwhile the steering mechanism can achieve straight line lateral walking in a certain angle range under the condition of non-rotation of the body

Two-way connection knuckle bearing steering system

Abstract: A two-way connection knuckle bearing steering system comprises a steering wheel, a steering column, a crank, a two-way connection knuckle bearing, a steering pull rod, reverse tooth knuckle bearings and cleat connecting rods. The steering wheel is fixedly connected with the steering column; the lower part of the steering column is connected or integrally provided with the radially outward crank; the far end of the crank is connected with the two-way connecting knuckle bearing; the two sides of the two-way connecting knuckle bearing are each connected with one end of the steering pull rod; theother end of each steering pull rod is movably connected with a cleat connecting rod through the reverse tooth knuckle bearing; and the cleat connecting rods are connected to front wheels of a kart; an included angle between the steering pull rod on the two sides of the two-way connection knuckle bearing ranges from 160 degrees to 180 degrees. The steering consistency of the front left wheel and the front right wheel is guaranteed when the kart turns, then the stable operability of turning is guaranteed, meanwhile, the turning radius can be adjusted according to actual requirements, and the operability is improved.