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JPH084467A Expired / Lapsed JP ⏱️ 0.0 years remaining

Hydraulic circuit of chuck device of full-rotation casing excavator

Assignee: Sumitomo SHI Construction Machinery Co Ltd
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Filing: 1994-06-22
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Granted: —
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Expires: 2014-06-22
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Abstract

Abstract Translated from Japanese (57)【要約】 【目的】 全回転式ケ−シング掘削機のチャック装置に おいて油圧ホ−スの着脱作業をなくし、作業能率を向上 させるための油圧回路を提供することを目的とする。 【構成】 ベ−スフレ−ム上に昇降可能に支持された昇 降フレ−ム12と、昇降フレ−ム12上に立設された固 定側シリンダ3と、昇降フレ−ム12内に回転可能に設 けた下部回転フレ−ム13と、下部回転フレ−ム13上 に立設した回転側シリンダ2と、回転側シリンダ2のロ ッドに連結された上部回転フレ−ムB8と固定側シリン ダ3のロッドに連結された上部回転フレ−ムA10及び これら回転フレ−ムA,B間のベアリング9とからな り、固定側シリンダ3の推力を利用してベアリング9を 介し回転側シリンダ2を作動し、さらにチャックシリン ダ1を作動させて移動バンド5,6,7を開閉するよう にした全回転式ケ−シング掘削機のチャック装置におい て、チャックシリンダ1と回転側シリンダ2間に閉回路 を構成し、閉回路の油量バランスを保つため、チェック バルブ25とリリ−フバルブ26と補助タンク27とを 設けた。 (57) [Summary] [Object] An object of the present invention is to provide a hydraulic circuit for improving the work efficiency by eliminating the work of attaching and detaching the hydraulic hose in the chuck device of the full-rotation casing excavator. A lift frame 12 supported on a base frame so as to be lifted, a fixed side cylinder 3 standing on the lift frame 12, and rotatable inside the lift frame 12. The lower rotary frame 13 provided, the rotary cylinder 2 erected on the lower rotary frame 13, the upper rotary frame B8 connected to the rod of the rotary cylinder 2, and the rod of the fixed cylinder 3. Composed of an upper rotary frame A10 and a bearing 9 between the rotary frames A and B. The thrust of the fixed cylinder 3 is used to operate the rotary cylinder 2 via the bearing 9, and In a chuck device of a full-rotation type casing excavator in which the chuck cylinder 1 is actuated to open and close the moving bands 5, 6 and 7, a closed circuit is formed between the chuck cylinder 1 and the rotation side cylinder 2 and closed. Circuit oil A check valve 25, a relief valve 26, and an auxiliary tank 27 are provided in order to maintain the quantity balance.

Inventors

  • 👤 Seiichirou Kuwamori
  • 👤 誠一郎 桑森

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-09 04:39
CPC Classifications
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