Transportation vehicle hydraulic system

A technology for hydraulic systems and trucks, applied in fluid pressure actuators, servo motors, servo meter circuits, etc., which can solve the problems of increased manufacturing costs, high prices, and long lead times for vulnerable parts, ensuring smooth loading and unloading , Guarantee the stability and avoid the effect of falling

Inactive Publication Date: 2018-12-18
广汉川友机械租赁有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the special support trucks currently on the market are expensive, and purchasing in large quantities is also a huge expense for coal mines
At present, the hydraulic support support trucks used in major coal mines in my country can be used for underground and ground transfer of hydraulic supports at the same time, because they must meet the requirements of explosion protection, which increases their manufacturing costs and uses a large number of special components. components, and the delivery cycle of vulnerable parts is long, which affects the work efficiency of coal mines

Method used

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  • Transportation vehicle hydraulic system

Examples

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Embodiment 1

[0018] Such as figure 1 As shown, a truck hydraulic system includes an oil supply circuit, a synchronous lifting unit, an outrigger unit and a clamping unit, and the outrigger unit, a synchronous lifting unit and a clamping unit are sequentially arranged on the oil supply circuit, A first decompression circuit with a first decompression valve connected in series flows out from the clamping unit and the lifting unit, and a second decompression circuit connected with a second decompression valve in series flows out from the oil supply circuit and the outrigger unit.

[0019] The outrigger unit includes two identical outrigger control circuits, and the two outrigger control circuits are sequentially separated from the oil supply circuit, and the three-position four-way reversing valve and the frame car are sequentially arranged on the outrigger control circuit. Outrigger hydraulic lock, the two inlets and outlets of the frame car outrigger hydraulic lock are respectively connecte...

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PUM

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Abstract

The invention discloses a transportation vehicle hydraulic system which comprises an oil supply loop, a synchronous lifting unit, a supporting leg unit and a clamping unit; and the oil supply loop issequentially provided with the synchronous lifting unit, the supporting leg unit and the clamping unit in a shunting manner. The transportation vehicle hydraulic system provided by the invention can ensure that four sets of lifting mechanism perform synchronous running in the hydraulic bracket disassembly process so as to ensure smooth and steady disassembly of a hydraulic bracket. Meanwhile, in the hydraulic system, a balance loop is used, and running of a hydraulic lifting system is ensured to be safe; and beyond that, a balance valve forms a certain backpressure in the lifting system so asto perform regulation on a speed, the smoothness of work of the hydraulic lifting system is guaranteed, and the problems that glide of a piston of a hydraulic cylinder is generated caused by leakage of a pipeline and a valve and the like are avoided.

Description

technical field [0001] The invention relates to the field of hydraulic control of a support transport vehicle, in particular to a hydraulic system of a transport vehicle. Background technique [0002] In my country's energy structure, coal is still the main energy source, and according to statistics, its application ratio has reached about 70%. Regardless of whether it is the international or domestic energy sector, the dominant position of coal in the energy structure will generally not change much for a long time to come. As an important basic industry, the coal industry is related to the country's energy security and economic lifeline, and plays a vital role in the economic development of our country, especially in our province, and plays an important role in social progress and economic development. impetus. Economic growth will inevitably increase the demand for coal, thereby promoting the development of the coal industry in the direction of mechanization of transport...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/22F15B13/06
CPCF15B11/22F15B13/06F15B2211/205F15B2211/71
Inventor 兰勇
Owner 广汉川友机械租赁有限公司
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