Wheel type center steering system

Abstract

The invention is composed of engine, stepless transmission, stepped transmission, differential, steering gear, transmission box, lifter, lumped brake, tripod, frame, circuit, oil circuit, solenoid valve and sensor, etc., and is a A non-memory, non-angle, instantaneous, and linear power steering system that can steer without displacement, avoiding the memory and nonlinearity of mechanical steering in angle and trajectory, and saving a lot of computing costs for intelligent driving. The solenoid valve directly controls the steering gear , CVT, brakes and lifters, etc., are beneficial to remote control, automatic driving, assisted driving and network driving, and gain advantages in maintenance, safety, operation and car popularization; this system has four-wheel drive and eight-wheel drive, four-wheel drive The four-wheel drive is mainly equipped with cars, and the eight-wheel drive is mainly equipped with harvesters; such a harvester does not require car transportation, which is conducive to passing extreme roads, the cab is not super high, and there is also intelligent driving when driving, which saves a truck for practitioners increase people's willingness to buy a machine.

Description

technical field [0001] The wheel center steering system is a non-angle, non-memory, instantaneous and linear power steering mechanism, mainly used in harvesters and smart cars, related to the field of driverless cars, involving a dual-flow transmission. Background technique [0002] 1. The center steering originated from the Second World War. It was first used in tanks and was famous all over the world for turning around in place. Due to the material strength and manufacturing limitations at that time, coupled with the huge destructive power of the war, the failure rate of center steering tanks was very high; After the war, the use of center steering was still tanks, and civilian use was very rare. During World War II, the road traffic in various countries was very underdeveloped, and tanks had strong off-road capabilities. The center steering system is a compromise between off-road and high mobility. The current application range is almost zero, but the market demand is gr...

AI Technical Summary

Problems solved by technology

[0003] 2. At present, my country has basically realized agricultural mechanization. There are a large number of combine harvesters, and the mobility is also very large. In addition, the seasonality of harvesting is very strong; therefore, the investment in human resources has increased, and the benefit of a single machine has dropped significantly, causing a lot of unnecessary waste.

Generally speaking, the two harvesters have their own advantages in terms of price, efficiency, maintenance, stubble cutting, feeding amount, straw and threshing load; the large granary and the engine are almost on the right, and the center of gravity is also on the right. , the fuselage tilts more laterally, and the direction is seriously to the right, which affects the manipulation and operation

[0004] 3. The bridges of super-long heavy trucks cannot be evenly distributed, which is conducive to steering. The trailer is the best evidence. The tow head is short, the steering is good, the cargo box is long, and the bridge is always behind. When turning and turning around, The steering of the tractor and the cargo box form a rotational moment or leverage, and the overall steering of the vehicle is achieved and completed. This is not a two-pronged steering method. How difficult it is for a car that is more than ten meters long and weighs dozens of tons to achieve steering; the trailer is turning Sometimes the rearview mirror has a large blind spot, which poses a great threat to small vehicles, especially at intersections, where accidents are more likely

Of course, the existing tanks are designed with shock absorbers, and each roller needs a shock absorber. The fixing of the rollers and shock absorbers is bound to be troublesome and cost-effective. Especially for heavy tanks, maintenance and repairs are naturally time-consuming. Strenuous; on rough roads, the shock absorber makes the rollers must fluctuate up and down, the track is loose and tight, and the drive will lag, which brings uncertainty to the driving. The probability of occurrence on muddy and slopes is high

[0006] 5. In rural areas, three-wheeled motorcycles are mainly means of transportation. It is a non-memory, instantaneous angle steering system. Its simple maneuverability is well known to women and children. It can be seen that this control system is successful, but its stability has shortcomings , horizontal tilting or too sharp turning, prone to rollover, less protection for the driver, weathered by wind and rain, can not meet the task of handling between farmland and machine farming roads, especially for crops with large yields, such as: corn, Sugarcane, rice, onions, cabbage, etc. can only be carried on the shoulders, which is very tiring; coupled with the aging population, the rural labor force is very tense during the harvest season

[0007] 6. At present, cars have entered the countryside, and the roads are very congested. The technical requirements for drivers have increased. Many people pursue driving licenses. It is a pity that some people have a driver's license but do not drive.

The timing and process of turning the steering wheel, the timing and process of returning to the direction, the priority of accelerator and brake, and the shifting of gears are often realized through multiple times. The dense signals and commands produce many singular points, which are very unfavorable for automatic driving and cause uncertainty. There is a high probability of sexual or cyclical commands, causing the car to freeze in place or even stall, seriously threatening driving safety

During the mechanical steering process, the trajectories of the front wheels and the rear wheels will hardly overlap, that is, the road section that the front wheels can pass, the rear wheels may not be able to pass; in many driving, the steering angle and the steering wheel angle are not linear, and the driver must pass the estimation And observation to control the throttle and steering wheel angle, the driver must consider, in terms of hardware and programs, unmanned cars may need a lot of cost to overcome; even in rail transportation, unmanned driving is not 100% sure, there are many in the background Manual service, there is also a driver on duty on the train

What's more, the current roads have a lot of traffic, and a skilled driver often faces the risk of accidents. How will unmanned cars face the drivers of adjacent cars? The driving behavior caused by human nature and habits

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