What does the shuttle shift of tractor mean?

Crawling gear When the gearbox system of a vehicle equipped with an automatic gearbox fails, in order to protect the vehicle and gearbox, the vehicle cannot engage in D gear at this time, and the gear at this time is 16+8 crawling gear.

For example, a four-speed automatic transmission has seven gears, P, R, N and D, 3.2.1* *, where P is the parking gear, R is the reverse gear, N is the neutral gear and D is the forward gear. When driving normally, you can only shift to the third gear at most, which is the crawling gear.

12+ 12 shuttle shift is relatively hydraulic, and the air filter is used to filter air to prevent dust in the air from being sucked into the cylinder block, mainly to protect the engine.

Gear-type rotary shuttle changing mechanism

ApplicationNo./PatentNo.: 200520072589

A gear-type rotary shuttle changing mechanism comprises an ejector pin, a threaded shuttle and a shuttle regulator, wherein the ejector pin and a nose guide rail are arranged in parallel; The threaded shuttle is formed by connecting a shuttle head, a shuttle rod and a shuttle box; Each threaded shuttle is slidably connected to the ejector pin through a shuttle box, and the shuttle box is provided with a threaded bayonet; Characterized by comprising at least two antenna rods, wherein the antenna rods are arranged along the arc surface of an arc-shaped fixing block or an arc-shaped fixing frame connected to the guide rail of the handpiece, and the belt line bayonet of each antenna rod and its shuttle box are distributed above the handpiece in an arc-shaped arrangement.

The shuttle regulator is located in the center of each antenna rod and its shuttle box, and is arc-shaped, and mainly comprises a seat body and a shuttle changing traction rod, wherein the seat body is installed on the machine head, and the shuttle changing traction rod and the seat body are rotatably connected around the length direction of the antenna rod; The head of the shuttle changing traction rod is matched with the belt bayonet space of each shuttle box, and a rotary positioning mechanism is arranged between the shuttle changing traction rod and the seat body. The scheme is simple in structure and convenient to operate, especially it can realize the multi-color thread changing function of two or more colors, thus weaving fabrics of various colors.