Main pump pressure control system for drill jumbo

A technology for controlling system and main pump pressure, applied in fluid pressure actuation system components, fluid pressure actuation devices, servo motors, etc. pressure, the effect of reducing flow requirements

Pending Publication Date: 2018-06-08
徐州徐工铁路装备有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The main pump is always in the highest pressure setting state, which cannot be automatically matched according to the needs of the actuator and load;
[0005] (2) The set pressure of the main pump is higher than the required pressure of the rock drill. When only the rock drill is working, the pressure oil from the main pump needs to be decompressed to the rock drill, resulting in energy loss, and the rock drill works for a long time, resulting in a huge energy loss;
[0006] (3) When the rock drill and the drilling boom move at the same time, the main pump is in a state of high pressure and large flow, which makes the driving motor load extremely large, and even seriously overloads the motor

Method used

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  • Main pump pressure control system for drill jumbo

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, the present invention includes a power source module, an impact pressure selection module, an impact pressure decompression module, a main pump pressure control module, a drill boom control pilot module, a drill boom motion sensing module and a drill boom multi-way valve 9; wherein, the power source The module includes fuel tank 1 and hydraulic control constant pressure pump 2; the shock pressure selection module includes 3.1 shock selection valve 3.1, shuttle valve 3.2, first damping port 3.3, second damping port 3.3, first relief valve 3.5, second relief valve Valve 3.7, third relief valve 3.8, first check valve 3.6, second check valve 3.10 and first hydraulic control reversing valve 3.9; impact pressure decompression module includes second hydraulic control reversing valve 4.1, hydraulic control Pressure reducing valve 4.2 and hydr...

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Abstract

The invention relates to a main pump pressure control system for a drill jumbo. The system comprises a power source module, an impact pressure section module, an impact pressure reduction module, a main pump pressure control module, a drill arm control guide module, a drill arm action sensing module and a drill arm multiway valve. Compared with the prior art, the main pump pressure control systemfor the drill jumbo has the advantages that the set pressure of a main pump is automatically matched according to the requirement of an execution mechanism, the working pressure of the main pump is increased, the flow requirement of a rock drill is reduced to make the main pump in a high-pressure small-flow state at the same time, and the load of a motor is at a reasonable level.

Description

technical field [0001] The invention relates to a pressure control system, in particular to a main pump pressure control system of a rock drilling rig, belonging to the technical field of rock drilling rigs. Background technique [0002] The rock drilling jumbo is a kind of equipment used for drilling blastholes. Generally, a hydraulic pump is used as the power source, which can supply pressure oil to the hydraulic rock drill and each hydraulic cylinder at the same time. The pressure of the hydraulic pump needs to match that of the actuator. Reasonable hydraulic pump pressure control technology helps to reduce the power consumption of the rock drilling rig and improve the construction efficiency of the whole machine. [0003] A set of existing rock drilling system is made up of main pump, hydraulic rock drill, drilling arm multi-way valve, drilling arm oil cylinder etc. Since the pressure requirements of the drill boom cylinder are not consistent with those of the hydraulic...

Claims

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Application Information

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IPC IPC(8): F15B11/028F15B21/00
CPCF15B11/028F15B21/001F15B2211/255F15B2211/25F15B2211/275F15B2211/20515
Inventor 赵建东张青国周忠尚陈保磊焦中兴
Owner 徐州徐工铁路装备有限公司
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