Hydraulic pump and construction machine

• Main Author: AKAMI TOSHIYA
• Format: Patent
• Language: Chinese; English
• Published: 05.03.2021
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The invention provides a hydraulic pump and a construction machine. The hydraulic pump is provided with a housing; a shaft supported in the housing so as to be rotatable about an axis; a cylinder bodyfitted to the outer peripheral surface of the shaft and rotated integrally with the shaft, the cylinder body having a cylinder chamber; and a valve plate disposed along the axis so as to overlap thecylinder block, the valve plate having an intake passage and a discharge passage communicating with the cylinder chamber, the valve plate having a communication passage formed on a surface of the valve plate adjacent to the cylinder block and defining a surface forming the intake passage, and the communication path communicates with at least a part of the intake passage. 本发明提供液压泵和施工机械。本发明的液压泵具备：壳体；轴，其以绕轴线旋转自如的方式支承于所述壳体内；缸体，其与所述轴的外周面嵌合，与所述轴一体地旋转，该缸体具有缸室；以及阀板，其以与所述缸体重叠的方式沿着所述轴线配置，具有与所述缸室连通的吸入通路和喷出通路，该阀板具有连通路径，在所述阀板的与所述缸体相邻的面且是用于划分形成所述吸入通路的面形成该连通路径，该连通路径与所述吸入通路的至少一部分连通。