Parking protection and acceleration device

Abstract

The invention discloses a parking protection and acceleration device. The device comprises a potentiometer, a pinion, a bull gear, a switch and an extension spring. The bull gear is a gear smaller than or equal to 1 / 4 . The pinion is connected with the potentiometer and engaged with the bull gear. The bull gear is cut into an inward-recessed step face. The switch is jacked by the inward-recessed step face, so that the switch is turned off or on when the bull gear rotates. The bull gear is connected with a foot rest lever and the foot rest lever is automatically rest through the extension spring after the foot rest lever is released. By the adoption of the parking protection and acceleration device, the switch is jacked by the inward-recessed step face of the bull gear, the microswitch is turned off or on when the bull gear rotates; and meanwhile the pinion is driven to rotate, the pinion drives the potentiometer to rotate to achieve acceleration or deceleration, and therefore the parking protection and acceleration functions are achieved. The parking protection and acceleration device has the beneficial effects of being simple in structure, simple in work principle, safe, reliable and suitable for different structure characteristics.

Description

technical field [0001] The invention belongs to the field of electric engineering vehicles, and more specifically, the invention relates to a parking protection and acceleration device used in electric engineering vehicles. Background technique [0002] In electric construction vehicles, packaged accelerators are mostly used for acceleration, and Hall control or potentiometers are used to control vehicle speed. The advantage of this accelerator is that it is easy to replace as a whole and can be purchased directly, but the price is relatively high. At the same time, the use of this kind of accelerator restricts the structural design of the vehicle, and is especially difficult to adopt in some structures with small spaces. [0003] The other is to directly use potentiometers or Hall components for acceleration, because no matter whether it is a potentiometer or a Hall component, the potential can be changed from 0 to a certain value range, and the car can be stopped as long ...

AI Technical Summary

Problems solved by technology

This method is relatively safe and reliable, and is suitable for different structural characteristics, but the structure of the devices that realize the rotation acceleration of the potentiometer and the switching control of the micro switch is very different, and the working principles are also different.

[0005] In addition, some use optical sensing, infrared, position sensing, etc. to achieve acceleration and stop functions. The cost of such control methods is relatively high, and the circuit is more complicated.

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