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Self-adaptive valve bank for rock drilling machine

A rock drilling rig, self-adaptive technology, applied in mechanical equipment, servo motor components, fluid pressure actuating devices, etc., can solve the problems of affecting the hole forming effect, user loss, slow return, etc., to improve the lifting response control features, the effect of reducing the time to rework, and reducing the cost of use

Active Publication Date: 2016-02-17
CHONGQING NACHUAN SHANYU HEAVY IND EQUIP CO LTD
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Among them, some anti-jamming systems are realized through complex pilot feedback systems. Either the design is complex, the response speed is slow, and the anti-jamming effect is not good, or the response speed is too fast and the return is slow, which seriously affects the hole-forming effect.
Some are controlled by microcomputers. Although the response speed is fast, the reliability is poor. In the harsh on-site environment, the lines and components are prone to problems. If they cannot be repaired and replaced in time, it will cause heavy losses to users.

Method used

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  • Self-adaptive valve bank for rock drilling machine

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are only used to explain the present invention, and do not constitute a limitation to the protection scope of the present invention.

[0018] Such as figure 1 In the self-adaptive valve group of the rock drilling rig shown, the oil inlet of the manual switch valve 1 communicates with the rotary pressure signal port K, and the pressure oil enters from the rotary pressure signal port K of the valve group, and passes through the manual Switch valve 1 and then flow into the first sequence valve 2 and the second sequence valve 3 of the valve group. The anti-seize function of the present invention can be closed by the manual switch valve 1 . When closed, the maximum rotational pressure is limited to the maximum pressure set by the system.

[0019] The oil inlet port of the first sequence valve 2 communicates with the oil outlet p...

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Abstract

The invention discloses a self-adaptive valve bank for a rock drilling machine. The self-adaptive valve bank comprises a first sequence valve, a first hydraulic operated directional valve, a shuttle valve and the like. The self-adaptive valve bank for a rock drilling machine is simple in structure and high in reliability, the rock drilling machine and a rock drilling tool are protected, and meanwhile the hole-forming efficiency is improved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to an adaptive valve group of a rock drilling rig. Background technique [0002] The full hydraulic surface rock drilling rig is a drilling engineering equipment used for rock excavation and stone mining. Due to the variety of rocks and complex formation conditions, the rotational resistance on the drill bit may suddenly increase and be stuck when drilling. If the rock drilling system cannot deal with the sudden bit jamming in time, it will cause the rotating motor to exceed the tolerance range, resulting in the bit being stuck together with the drill pipe, connecting sleeve and other drilling tools, causing users to suffer large economic losses, and Seriously affect the hole-forming efficiency. [0003] The original down-the-hole impact drills all used pneumatic rotary motors, which had small torque, could not effectively break rocks, had low drilling speed, and had no anti-j...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02
Inventor 程建鹏李红廖明杰王姜力
Owner CHONGQING NACHUAN SHANYU HEAVY IND EQUIP CO LTD
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