Steering control device for electric wheel mining dump trucks

Abstract

The invention discloses a steering control device for electric wheel mining dump trucks, which belongs to the technical field of steering control system application. The steering control system comprises a steering control system body, which comprises a sucked oil filter, a constant-pressure variable plunger pump, a high-pressure filter, a return oil filter, an integrated steering brake block, steering energy accumulators, a small-displacement steering gear, a steering flow amplifier and double-acting steering cylinders, the constant-pressure variable plunger pump is respectively connected with an oil source and the integrated steering brake block through the sucked oil filter and the high-pressure filter, the return oil filter is directly connected with the integrated steering brake block, the integrated steering brake block is respectively connected with the steering energy accumulators, the small-displacement steering gear and the steering flow amplifier through oil passages, and the steering flow amplifier is connected with the double-acting steering cylinders through oil passages. The steering control system has the beneficial effects that: the structure is simple, the size is small, the weight is light, and the steering control system is quick and convenient to mount and repair and handy to control, is safe and reliable, and brings more convenience to driving.

Description

technical field [0001] The invention relates to a steering control system, in particular to a steering control device for an electric wheel mine dump truck, belonging to the technical field of steering control systems. Background technique [0002] At present, the steering control system of electric wheel dump trucks generally uses quantitative pumps and unloading overflow valves to supply oil. Quantitative pumps generally use gear pumps or vane pumps. The failure rate of the valve is high. There are also some mining dump trucks that use a circuit that combines a load sensing steering valve and a priority valve to achieve a stable steering flow to a certain extent, making the steering performance more stable and reliable. However, the pumps used in these circuits are quantitative pumps, which cannot The flow is provided according to the needs of the load, and part of the liquid flow always returns to the fuel tank through overflow, resulting in power loss. [0003] Since t...

AI Technical Summary

Problems solved by technology

[0002] At present, the steering control system of electric wheel dump trucks generally uses quantitative pumps and unloading overflow valves to supply oil. Quantitative pumps generally use gear pumps or vane pumps. The failure rate of the valve is high

There are also some mining dump trucks that use a circuit that combines a load sensing steering valve and a priority valve to achieve a stable steering flow to a certain extent, making the steering performance more stable and reliable. However, the pumps used in these circuits are quantitative pumps, which cannot The flow is provided according to the needs of the load, and there is always a part of the liquid flow back to the fuel tank through overflow, resulting in power loss

[0003] Since the electric wheel dump truck is a transfer vehicle, the steering is very frequent. Most electric wheel dump trucks use a large-displacement steering gear, which is relatively large in volume and weight, and it is inconvenient to install on the walking machine. Tired easily

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