Intelligent two-step(two-shift) automatic speed variator of drive torque - resistance moment drive sensing

Abstract

The invention discloses an intelligent two-gear automatic gearbox for driving the transmission and sensing of torsional moment-resistance moment. The intelligent two-gear automatic gearbox comprises a gearbox body, a fixed shaft relatively fixed with the gearbox body, a transmission shaft sleeve sleeved on the fixed shaft, a driven camshaft, a self-adaptive transmission and sensing driving assembly arranged on the transmission shaft sleeve and a self-adaptive automatic gear shifting and speed change assembly arranged on the driven shaft; a sensing device is arranged on the fixed shaft; the self-adaptive automatic gear shifting and speed changing assembly comprises a rapid-gear cam mandril type gear overrunning clutch, a slow-gear overrunning clutch gear mechanism and a speed change spring self-adaptive cirque body cam mechanism in parallel arrangement; the sensing device is simultaneously a transmission member, can detect torsional moment, rotational speed and driving resistance and a vehicle speed signal according to the driving resistance, automatically complete two-gear shifting without cutting driving force, avoid unstable operation of an engine or a motor, satisfy the use in a mountainous area, hill and heavy load and improve the dynamic property, economy, safety and comfort of locomotive.

Description

technical field [0001] The invention relates to a transmission of a motor vehicle or mechanical power equipment, in particular to an intelligent two-speed automatic transmission with drive torque-resistance torque transmission and sensing. Background technique [0002] In the prior art, electric vehicles, motorcycles, and electric bicycles basically directly control the current or the throttle to control the speed through the speed control handle or the accelerator pedal, or use the manual mechanical automatic transmission mechanism to realize the speed change. The operation of the handle or the accelerator pedal depends entirely on the driver's operation, which often results in a mismatch between the operation and the driving conditions, causing the engine to stall or the motor to run unstable and stalled. [0003] Motor vehicles need to achieve intelligent control of current or throttle, and load, torque or speed are important parameters. The measurement of this index gen...

AI Technical Summary

Problems solved by technology

However, this sensing device is structurally designed to be installed on the wheel hub. Small motorcycles or electric bicycles are light in weight. If they are installed at the center of the rear wheel and the center of gravity is tilted backward, it will affect the safe driving performance and cannot be automatically replaced. block

[0004] Other transmission sensing devices that are operated and controlled by the rider only based on experience without knowing the driving resistance inevitably have the following problems: 1. When starting, going uphill and with a heavy load, the motor or motor is forced to The engine speed drops and works in the low-efficiency area, causing the motor to stall, heat up, or even stop rotating when the battery increases the supply current

2. Since there is no driving torque-driving resistance sensor, it lacks "road sense" and cannot reflect the driving torque of the motor, the mechanical efficiency loss and motion resistance of the transmission system, and the change in the transmission inertia of the wheels and the rotating parts of the transmission system, so it is difficult to realize the driving force and driving force. Resistance Torque Balance Control

Can not solve the electric vehicle motor torque-speed characteristics, very incompatible with the driving requirements of the vehicle, often contrary to it, and difficult to achieve scientific problems of precise control

3. Since there is no mechanical transmission to adjust the torque and speed, relying entirely on the battery for high-current power supply will inevitably shorten the battery life. It can only be promoted and used in plain areas, and cannot be used in mountainous, hilly and heavy-load conditions, which narrows the scope of use; 4. Hub-type motors are generally installed in the center of the rear wheel and the center of gravity is tilted backward, which affects safe driving; 5. The installation space at the drive wheel is small, and it is difficult to accommodate automatic transmissions and other new technologies after the motor is installed; 6. Control system It does not have the function of self-adaptation, and cannot automatically detect, correct and eliminate the driver's operation errors; 7. When the vehicle speed changes suddenly, the motor will run in an unsteady state, which will inevitably cause the motor power and driving resistance to be difficult to match

8. The function of the control system is single, it is difficult to integrate intelligent synchronization to accurately control the steering and braking, and the driving safety is poor; 9. The continuation distance is short, the climbing ability is poor, and the scope of application is small

[0005] Therefore, there is a need for a transmission sensing automatic automatic transmission. The sensing device can be directly connected to the transmission system to participate in the transmission, accurately detect the torque-resistance signal, and can automatically change gears without cutting off the driving force when the driving resistance changes. , to solve the engine or electric motor torque - speed change is small can not meet the road use under complex conditions

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