HYDRAULIC ROTARY MACHINE

• Main Authors: KUBOI HIROAKI, IWANACHI TETSUYA, TAKEI HAJIME
• Format: Patent
• Language: English; Japanese
• Published: 13.12.2021
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

To downsize a hydraulic rotary machine.SOLUTION: A piston pump 100 includes a tilting mechanism 30 that energizes a swash plate 8 according to a control pressure, a support spring 20 that exerts energizing force against energizing force of the tilting mechanism 30 and supports the swash plate 8, and a regulator 50 that controls the control pressure led by the tilting mechanism 30 according to a self-pressure of the piston pump 100. The regulator 50 has an outside spring 51a and an inside spring 51b expanding/contracting following the tilting of the swash plate 8, and a control spool 52 that moves according to the energizing force of the outside spring 51a and the inside spring 51b to adjust the control pressure. The outside spring 51a, the inside spring 51b, and the support spring 20 are provided adjacent to each other and in parallel with respect to the swash plate 8.SELECTED DRAWING: Figure 1 【課題】液圧回転機を小型化する。【解決手段】ピストンポンプ１００は、制御圧に応じて斜板８を付勢する傾転機構３０と、傾転機構３０の付勢力に抗するような付勢力を発揮して斜板８を支持する支持スプリング２０と、傾転機構３０に導かれる制御圧をピストンポンプ１００の自己圧に応じて制御するレギュレータ５０と、を備え、レギュレータ５０は、斜板８の傾転に追従して伸縮する外側スプリング５１ａ及び内側スプリング５１ｂと、外側スプリング５１ａ及び内側スプリング５１ｂの付勢力に応じて移動して、制御圧を調整する制御スプール５２と、を有し、外側スプリング５１ａ及び内側スプリング５１ｂと支持スプリング２０とは、互いに隣接し斜板８に対して並列に設けられる。【選択図】図１