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Electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine

A rock drilling rig, logic control technology, applied in the field of electro-hydraulic logic control circuit, can solve problems such as poor adaptability, inability to realize automatic matching of rock drilling key actions, compound logic control, non-adjustable, etc., and achieve the effect of improving drilling efficiency

Active Publication Date: 2014-05-28
SUNWARD INTELLIGENT EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the remaining problems are poor reliability and poor adaptability of rock drilling, drill tail breakage, drill rod breakage, drill sticking, failure to pass through interlayer geology and other application bottlenecks, which seriously restrict the application and promotion of this new product
The full-power throttling hydraulic system of small excavators is used to control hydraulic rock drills. It can only realize the independent and non-adjustable control of the three key rock drilling actions of impact, rotation, and advancement, and cannot realize the automatic matching and compounding of the three key rock drilling actions. logic control

Method used

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  • Electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine
  • Electro-hydraulic logic control loop of rock drilling actions of hydraulic rock drilling machine

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing, specific embodiment of the present invention is described in further detail:

[0016] attached figure 1 and figure 2 The electro-hydraulic logic control circuit for the rock drilling action of a hydraulic rock drilling rig is shown, which consists of an adjustable pressure relay 1.1, a pressure relay 1.2, a pressure relay 1.3, a pressure reducing valve 3.1, a pressure reducing valve 3.2, and an electromagnetic reversing valve 2 , electromagnetic reversing valve 4, and overflow valve 5 constitute a two-stage pressure propulsion logic control loop for rotary pressure control, and simultaneously low-pressure propulsion control and low-pressure impact logic control loop; pressure relay 1.3, electromagnetic reversing valve 4, and overflow valve 5 form a propulsion pressure control level Two-stage impact pressure logic control loop; pressure relay 1.2 and electromagnetic reversing valve 6 form a rotary pressure control push-up...

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Abstract

The invention relates to an electro-hydraulic logic control loop of rock drilling actions of a hydraulic rock drilling machine. A first pressure relay, a second pressure relay, a third pressure relay, a first pressure reducing valve, a second pressure reducing valve, a first electromagnetic directional valve, a second electromagnetic directional valve and an overflow valve or a speed regulating valve constitute a first logical control loop of controlling two-stage pressure propulsion by revolution pressure and simultaneously controlling low-pressure impact by low-pressure propulsion; the third pressure relay, the second electromagnetic directional valve and the overflow valve or the speed regulating valve constitute a second logic control loop for controlling two-stage impact pressure by propulsion pressure; and the second pressure relay and a third electromagnetic directional valve constitute a logic control loop of controlling propulsion and lifting by revolution pressure.

Description

technical field [0001] The invention relates to a rock drilling action control circuit of a hydraulic rock drilling rig, in particular to an electro-hydraulic logic control circuit for the hydraulic rock drilling rig to realize the three key rock drilling actions of impact, rotation and propulsion. Background technique [0002] Hydraulic rock drilling rigs are widely used in rock drilling operations due to their advantages of high efficiency and energy saving. The working conditions of rock drilling and drilling are harsh and complicated, and the specific performance is that according to different rock types and hardness, the three key rock drilling actions of impact, rotation, and advancement need to have good adjustability; adapt to caves, cracks, and interlayers in rock formations And other complex geology, the three key rock drilling actions of impact, rotation and propulsion and their matching are equipped with automatic logic control, automatic anti-air strike and anti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B44/06F15B21/08
Inventor 王东升刘鹏赵宏强高淑蓉林宏武
Owner SUNWARD INTELLIGENT EQUIP CO LTD
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