Title:
BOTTOM COVER OPENING AND CLOSING DEVICE OF ROTATIONAL BUCKET
Document Type and Number:
Japanese Patent JP3680082
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve controllability to make it possible to efficiently open the bottom cover of a rotational bucket.
SOLUTION: A bottom cover opening and closing device of a rotational bucket is equipped with a leg member 50 mounted to a kelly bar side and a transfer member 46 mounted to a rotational bucket 100 side and brought into contact with the leg member 50 to transfer rotation, when the bottom cover opening and closing deive is positioned in an intermediate position between an excavation position and a handing-up position, a projection 48a of the transfer member 46 enters a notch 52 formed in the leg member 50 by reverse of the kelly bar to allow the rotation at a specific angle and, at the same time, the kelly bar is connected to the rotational bucket 100 with a joint mechanism 20 for allowing a specific amount of movement in the direction of the axis of the kelly bar between the excavation position and hanging-up position. When it is positioned in a position other than the excavation position, a releasing mechanism 78 for releasing the interlock of a stop device 116 by the reverse of the kelly bar is provided.
Inventors:
Masahiro Nakajima
Toru Toyoshima
Toru Toyoshima
Application Number:
JP22940095A
Publication Date:
August 10, 2005
Filing Date:
September 06, 1995
Export Citation:
Assignee:
Nippon Vehicle Manufacturing Co., Ltd.
Daia Soil Co., Ltd.
Daia Soil Co., Ltd.
International Classes:
E21B11/00; (IPC1-7): E21B11/00
Domestic Patent References:
| JP58017991A | ||||
| JP679893U |
Attorney, Agent or Firm:
Tsutomu Adachi