Title:
HYDRAULIC CRUSHER
Document Type and Number:
Japanese Patent JP2023083823
Kind Code:
A
Abstract:
To provide a hydraulic crusher allowing rotational controllability of a hydraulic crusher body to be improved.SOLUTION: A hydraulic crusher 10 is provided with: a pair of crusher arms 11; a crusher body 12 supporting the pair of crusher arms 11 in a freely openable/closable manner; a fixation bracket 13 rotatably connecting the crusher body 12 to an arm of an operating carriage; a hydraulic actuator 20 disposed on the crusher body 12, for opening/closing the pair of crusher arms 11; a hydraulic motor 30 having a rotation mechanism rotating the crusher body 12; an opening/closing hydraulic flow passage 21 connected from an operating carriage side to the hydraulic actuator 20; a rotational hydraulic flow passage 31 branching from the opening/closing hydraulic flow passage 21 and connected on the hydraulic motor 30; and rotational hydraulic flow passage opening/closing means 40 for sending hydraulic oil of an opening side flow passage 22 of the opening/closing hydraulic flow passage 21 to the hydraulic motor 30 when hydraulic flow between two points within the opening side flow passage 22 stops.SELECTED DRAWING: Figure 2
Inventors:
HONMA MASATOSHI
Application Number:
JP2021197753A
Publication Date:
June 16, 2023
Filing Date:
December 06, 2021
Export Citation:
Assignee:
FURUKAWA ROCK DRILL CO LTD
International Classes:
B02C1/02; E02F9/22; E02F3/36; E04G23/08
Attorney, Agent or Firm:
田中 秀▲てつ▼
Hajime Hirose
Tetsuya Mori
Hajime Hirose
Tetsuya Mori
Previous Patent: antenna device
Next Patent: Detection device, substrate processing device, and article manufacturing method
Next Patent: Detection device, substrate processing device, and article manufacturing method