Mechanical soft starting auxiliary driving device

Abstract

The invention discloses a mechanical soft starting auxiliary driving device. The mechanical soft starting auxiliary driving device comprises a prime motor, a mechanical soft starting device, a speed changing device, a working mechanism, a gate control system, a clutch, a second driving motor, a hydraulic pump, a second safe valve, a three-position four-way control valve, a controller, a power device, a combined reversing valve, an energy accumulator, a pressure sensor, a two-position two-way control valve and a first safe valve. When the working mechanism starts, the power device is in the hydraulic motor working condition to assist in starting of the working mechanism, and when the working mechanism brakes, the power device is in the pump working condition to assist in braking. By means of the mechanical soft starting auxiliary driving device, the effects of soft starting and soft stopping of common driving devices can be achieved, moreover, auxiliary braking and braking energy recycling can be achieved through an energy recycling device, the energy consumption of the working mechanism in the starting and stopping process is reduced, and the problem that the common existing driving devices cannot achieve energy saving effect basically is solved.

Description

technical field [0001] The invention relates to a mechanical driving device, in particular to a mechanical soft start auxiliary driving device. Background technique [0002] Belt conveyors / scraper conveyors / loaders / shield cutterheads / crushers and other equipment are widely used in the production process of modern industrial enterprises and are an indispensable part of the production process of modern industrial enterprises. The basic equipment in the production mechanization system. Its performance determines the efficiency and level of transportation mechanization and production mechanization. How to correctly select a reliable and controllable driving device, reasonably control the start-up process to avoid excessive stress and oscillation, and improve the overall economy of equipment are key issues in the design of transportation machinery and production machinery. [0003] At present, the commonly used driving devices include AC variable frequency speed regulation driv...

AI Technical Summary

Problems solved by technology

Using the above-mentioned driving device, although the soft start and soft stop of the working mechanism can be realized, there are still many problems in the actual operation: the AC variable frequency speed regulation drive system is technically difficult, and the use of frequency converters to drive the motor at the rated frequency cannot save energy. , will reduce the efficiency of the system due to the loss of the frequency converter itself, increase the number of fault points, and reduce the reliability. ;Liquid viscous friction soft start system such as Controlled Starting Transmission (Controlled Starting Transmission, CST) controllable soft start device has basically no energy-saving effect, high heat generation, low transmission efficiency, high price and high maintenance cost; hydraulic motor drive device, the price is average It is 2 to 3 times that of the speed-regulating hydraulic coupling drive device, and the price is relatively close to that of the CST soft-start device.

The driving devices currently used basically have no energy-saving effect and cannot realize energy recovery and reuse

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