To provide a crawler belt tension adjusting device that can improve workability of crawler belt tension adjustment work.SOLUTION: A grease passage 29 of a frame-side rod 24 includes: an axial passage portion 29A axially extending from a grease chamber 28; a supply passage portion 29B extending from the axial passage portion 29A toward a screw seat 30B of an internal thread hole 30; and a discharge passage portion 29C disposed at a different position from the supply passage portion 29B, extending from the axial passage portion 29A toward a position close to an opening 30A of the grease passage 29 than the screw seat 30B, and opened to a circumferential surface 30C of the internal thread hole 30. A grease supply valve 32 includes: an external thread portion 33A disposed on an outer circumference of a valve casing 33 to be screwed into the internal thread hole 30; and a grease discharge groove 39 disposed on the valve casing 33, having one end communicated with the opening 30A of the grease passage 29 and the other end extending to an axially halfway portion on the outer circumference of the valve casing 33, and communicable to the discharge passage portion 29C when the grease supply valve 32 is released.SELECTED DRAWING: Figure 6
【課題】履帯張り調整作業の作業性を向上することができる履帯張り調整装置を提供する。【解決手段】フレーム側ロッド24のグリース通路29は、グリース室28から軸方向に延びる軸方向通路部29Aと、軸方向通路部29Aからめねじ孔30のねじ座30Bに向けて延びる供給通路部29Bと、供給通路部29Bと異なる位置で軸方向通路部29Aからねじ座30Bよりもグリース通路29の開口30A側に位置してめねじ孔30の周面30Cに向けて開口する排出通路部29Cとを有している。給脂弁32は、弁ケーシング33の外周に設けられめねじ孔30に螺出入されるおねじ部33Aと、弁ケーシング33に設けられ一端側がグリース通路29の開口30A側に連通し他端側が弁ケーシング33の外周を軸方向途中部位まで延びて給脂弁32を緩めたときに排出通路部29Cに連通するグリース排出溝39とを有している。【選択図】図6
CRAWLER BELT TENSION ADJUSTING DEVICE
履帯張り調整装置
2020-01-30
Patent
Electronic Resource
Japanese
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