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Signal oil output structure of impact cylinder of hydraulic rock drill

A technology of hydraulic rock drill and output structure, applied in the direction of impact drilling, reciprocating drilling rig, drilling equipment, etc., can solve problems such as design and processing difficulties, reduce processing difficulty, prolong cylinder life and service interval, and improve product quality. quality effect

Pending Publication Date: 2021-08-10
SUNWARD INTELLIGENT EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a signal oil output structure of the impact cylinder of the hydraulic rock drill that can simplify the structure of the impact cylinder in view of the design and processing difficulties caused by the multi-signal oil ports of the impact cylinder of the existing hydraulic rock drill

Method used

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  • Signal oil output structure of impact cylinder of hydraulic rock drill
  • Signal oil output structure of impact cylinder of hydraulic rock drill
  • Signal oil output structure of impact cylinder of hydraulic rock drill

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0031] For the convenience of description, the relative positional relationship of each component, such as: the description of up, down, left, right, etc., is described according to the layout direction of the drawings in the specification, and does not limit the structure of this patent.

[0032] Such as image 3 As shown, the first embodiment of the signal oil output structure of the impact cylinder of the hydraulic rock drill of the present invention includes an impact cylinder and a reversing valve 5 , and the impact cylinder includes an impact cylinder 4 and an impact piston 3 .

[0033] One end of the impact piston 3 is installed in the impact cylinder 4, and the impact piston 3 is provided with a first annular boss 31 and a second annular boss 32 that are matched with the inner cavity...

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Abstract

The invention discloses a signal oil output structure of an impact cylinder of a hydraulic rock drill. The signal oil output structure is characterized in that an impact cylinder body is only provided with a signal oil port communicating with a control cavity of a reversing valve, when an impact piston returns, the impact piston completes a return stroke control stroke Sc before the left side edge of the signal oil port, and the signal oil port communicates with a piston front cavity; and when the impact piston strokes, after the impact piston starts from the right side of the signal oil port and completes a stroke control stroke Sic, the signal oil port communicates with a piston middle cavity. According to the signal oil output structure, the machining difficulty of the hydraulic rock drill cylinder is reduced, the machining yield of the cylinder is increased, the service life of the cylinder is prolonged, the service interval of the cylinder is prolonged, and the product quality is improved.

Description

technical field [0001] The invention relates to a reversing valve of a hydraulic rock drill, in particular to a signal oil output structure of an impact cylinder of a hydraulic rock drill. Background technique [0002] At present, the reversing action of the reversing valve of the hydraulic rock drill is controlled by the movement position feedback of the impact piston, that is, the reversing valve is driven by the feedback signal oil of the movement position of the impact piston, and then the return stroke and the stroke of the impact piston are controlled by the reversing valve. Such as figure 1 , figure 2 As shown, at present, the motion position feedback of the impact piston 3 is provided by setting the return commutation signal port 1 and the stroke reversing signal port 2 on the cylinder body 4 of the percussion piston 3 respectively, and connecting the return commutation signal port 1 and the The stroke reversing signal oil port 2 communicates with the control cavi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B1/26E21B41/00E21B47/00
CPCE21B1/02E21B41/00E21B47/00
Inventor 何清华丁河江宋磊
Owner SUNWARD INTELLIGENT EQUIP CO LTD
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