TANDEM TYPE HYDRAULIC PUMP

PROBLEM TO BE SOLVED: To provide a tandem type hydraulic pump capable of shrinking an axial size of an intermediate region of a casing formed with two-system discharging flow passages and then capable of shortening an entire axial length of the casing.SOLUTION: A tandem type hydraulic pump in accord...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: YAMANE SHINYA
Format: Patent
Sprache:eng ; jpn
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a tandem type hydraulic pump capable of shrinking an axial size of an intermediate region of a casing formed with two-system discharging flow passages and then capable of shortening an entire axial length of the casing.SOLUTION: A tandem type hydraulic pump in accordance with a preferred embodiment includes a casing, two pump units, a suction flow passage and two-system discharging flow passages. The discharging flow passage of each of the systems has two flow inlets, one flow outlet and a merging part. Each of the flow inlets and the flow outlet is arranged at both ends in a flowing direction of hydraulic oil. The merging part merges hydraulic oils flowed in through the two flow inlets in the midway of the hydraulic oil flowing direction and guides it to one flow outlet. Then, the overlapped regions as seen from an axial direction of two-system discharging flow passages are spaced apart in such a way that the shortest size between the inner walls in the two-system discharging flow passages may become more than a prescribed size. In addition, the merging part is arranged at a side near the flow outlet rather than the overlapped regions.SELECTED DRAWING: Figure 2 【課題】2系統の吐出流路が形成されるケーシングの中間部領域の軸方向寸法の短縮を図ることができ、それにより、軸方向全長の短縮が可能なタンデム型油圧ポンプを提供することである。【解決手段】実施形態のタンデム型油圧ポンプは、ケーシングと、2つのポンプユニットと、吸入流路と、2系統の吐出流路と、を持つ。各系統の吐出流路は、2つの流入口と、1つの流出口と、合流部と、を持つ。流入口と吐出口は、それぞれ圧油の流れ方向の両端に配置されている。合流部は、圧油の流れ方向の途中に、2つの流入口から流入した圧油を合流させて1つの流出口に導く。そして、2系統の吐出流路の軸方向から見て重なるラップ領域部分は、2系統の吐出流路の内壁同士間の最短寸法が所定以上となるような間隔をおいて配置されている。また、合流部がラップ領域部分よりも流出口に近い側に配置されている。【選択図】図2