Title:
ROD SEALING UNIT AND LOW-NOISE VIBRATION ROCK DRILL USING SAME
Document Type and Number:
WIPO Patent Application WO/2022/225096
Kind Code:
A1
Abstract:
A low-noise vibration rock drill according to the present invention comprises: a main body part having a sound-insulation space therein and having a support-coupling part at one end portion thereof; a drifter, which is supported by a forward/backward transfer unit in the sound-insulation space of the main body part to move forward and backward in the sound-insulation space; a rod provided in the drifter so as to be inserted into and withdrawn from the sound-insulation space of the main body part; a low-noise rod sealing unit having a base member, which has a through-hole corresponding to a rod-withdrawing hole of the main body part, and a housing member, which is supported by the base member to be suspended by means of an elastic member for preventing the vibration of the rod from being transmitted to the main body part and has a rod-supporting part for slidably and rotatably supporting the rod; and a vibration generation unit which is provided in the main body part to create a vacuum inside the sound-insulation space and which suctions external air to cool the drifter.
Inventors:
PARK JEONG YEL (KR)
Application Number:
PCT/KR2021/008394
Publication Date:
October 27, 2022
Filing Date:
July 02, 2021
Export Citation:
Assignee:
DAEDONG ENG CO LTD (KR)
International Classes:
E21B7/02; E21B4/00; E21B6/00
Foreign References:
| KR20200045994A | 2020-05-06 | |||
| KR101110352B1 | 2012-02-15 | |||
| JP2015229226A | 2015-12-21 | |||
| KR20200045991A | 2020-05-06 | |||
| KR20210052411A | 2021-05-10 |
Attorney, Agent or Firm:
LEE, Jea Ryang (KR)
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