Abstract: A method and a system for controlling a gear of the two-speed gearbox and a vehicle is provided. The method for controlling a gear of a two-speed gearbox includes: determining a first target gear of the gearbox reflecting a current driving demand of a user according to a current vehicle-speed; and performing a gear intervention control of the gearbox based on at least one of the following aspects: position information of a drive gear-lever, a rotation-speed of a drive motor of a vehicle, and gear fault information of the gearbox, to shift the first target gear of the gearbox to a second target gear of the gearbox that matches with real-time operation conditions of the vehicle.

Abstract: A lifting mechanism includes: a cross-arm assembly including a first combined arm and a second combined arm arranged in parallel, the first and second combined arms each comprising a first support member and a second support member, the length of the first support member being greater than the length of the second support member; a support connection assembly including a first rotational connection assembly and a first sliding connection assembly fixed to a base, and a second rotational connection assembly and a second sliding connection assembly fixed to the bottom side of a table top, the first and second sliding connection assemblies each comprising a slide rail and a moving member rotatably and slidably arranged in the slide rail; and a driving member connected to the cross-arm assembly and/or the support connection assembly for driving the moving members to change their position on the slide rail.

Abstract: A lift structure with adjustment assistance optimized based on ergonomics includes a top, a base, an X-shaped cross arm and a gas spring, wherein the X-shaped cross arm includes a first directional arm and a second directional arm; wherein one end of the gas spring rotates around a second rotating shaft fixed relative to the first directional arm, and the other end rotates around a third rotating shaft fixed relative to the second directional arm, and the first, second and third rotating axes being parallel with each other; and wherein at the reference height, in a plane where an axis of the gas spring is located and is perpendicular to the respective rotating axes, the axis of the gas spring is tangent to a circumference centered on the first rotating shaft and having a set radius, with a tangent point being located on the second rotating shaft.

Abstract: A method and a system for controlling a gear of the two-speed gearbox and a vehicle is provided. The method for controlling a gear of a two-speed gearbox includes: determining a first target gear of the gearbox reflecting a current driving demand of a user according to a current vehicle-speed; and performing a gear intervention control of the gearbox based on at least one of the following aspects: position information of a drive gear-lever, a rotation-speed of a drive motor of a vehicle, and gear fault information of the gearbox, to shift the first target gear of the gearbox to a second target gear of the gearbox that matches with real-time operation conditions of the vehicle.