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Hydraulic impactor control system and hydraulic rock drill

A technology of hydraulic impactor and control system, applied in the field of hydraulic control, can solve the problem of not being able to adjust impact energy and impact frequency independently, and achieve the effect of independent adjustment

Active Publication Date: 2022-04-08
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a hydraulic impactor control system and a hydraulic rock drill, aiming to solve the technical problem that the existing hydraulic impactor piston reversing depends on the stroke feedback hole and cannot independently adjust the impact energy and impact frequency.

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  • Hydraulic impactor control system and hydraulic rock drill
  • Hydraulic impactor control system and hydraulic rock drill
  • Hydraulic impactor control system and hydraulic rock drill

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Embodiment Construction

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0015] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof.

[0016] It should also be understood that the terminology used ...

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Abstract

The invention discloses a hydraulic impactor control system and a hydraulic rock drill, the hydraulic impactor control system comprises a flow distribution valve, a main reversing valve and an overflow valve, and the flow distribution valve comprises a control oil switching valve, a main oil path switching valve, a first throttling valve, a second throttling valve and a pressure reducing valve. The through-flow area of the first throttling valve and the through-flow area of the second throttling valve are adjusted, oil liquid resistance of oil cavities on the two sides of a valve element of the main oil way switching valve is changed, and therefore the movement speed of the valve element of the main oil way switching valve is changed, the main oil way switching time interval is adjusted, and namely the reversing frequency of an impactor piston is adjusted. The reversing frequency of the impactor piston is determined by the reversing frequency of the main oil way switching valve, and the movement of the impactor piston, namely the impact energy, is determined by the pressure of the main oil way, so that the impact energy and the impact frequency of the impactor are independently adjusted.

Description

technical field [0001] The invention relates to the technical field of hydraulic control, in particular to a hydraulic impactor control system and a hydraulic rock drill. Background technique [0002] The hydraulic impactor has developed rapidly for more than 100 years, and there are three generations of products so far. But in terms of structure and control principle, there is basically no substantial change, and it has been used until now. At present, the hydraulic impactors used at home and abroad are controlled by stroke feedback, that is, the reversing control of the reciprocating motion of the impactor piston is controlled by the feedback hole on the cylinder block of the impactor through the high pressure, the piston flow distribution reversing valve spool changes direction, and the main oil circuit is switched. , to realize the reversing of the impactor piston. The stroke feedback working principle of the hydraulic impactor determines its technical characteristics,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/08E21B1/26F15B11/042
CPCY02E10/20
Inventor 吴万荣田广天邹利民陈旺
Owner CENT SOUTH UNIV
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