Variable volume type inclined-shaft hydraulic pump

A technology of hydraulic pump and capacity, applied in the direction of liquid variable volume machinery, pumps, multi-cylinder pumps, etc., can solve the problems of reduced sealing performance and accelerated wear of hydraulic machinery, and achieve the effect of improving suction performance and high strength

Active Publication Date: 2014-08-06
NIHON KENKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the wear of the hydraulic equipment...

Method used

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  • Variable volume type inclined-shaft hydraulic pump
  • Variable volume type inclined-shaft hydraulic pump
  • Variable volume type inclined-shaft hydraulic pump

Examples

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Embodiment Construction

[0033]Hereinafter, as a variable capacity inclined axis hydraulic pump according to an embodiment of the present invention, a variable capacity inclined axis hydraulic pump is taken as an example, and follows the Figure 1 to Figure 10 The hydraulic pump will be described in detail.

[0034] figure 1 Here, 1 represents a variable capacity inclined axis hydraulic pump (hereinafter referred to as hydraulic pump 1 ) which is a variable capacity inclined axis hydraulic pump. The hydraulic pump 1 sucks oil from a working oil tank, and supplies pressurized oil to various hydraulic devices (none of which are shown) connected to the downstream side of the hydraulic line.

[0035] 2 is a bushing constituting the outer shape of the hydraulic pump 1 . The bushing 2 is composed of a bushing body 3 and a bushing head 4 . Here, the sleeve body 3 is composed of a substantially cylindrical bearing portion 3A located on one side in the axial direction, and a cylinder block housing portion 3...

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Abstract

The invention relates to a variable volume type incline-shaft hydraulic pump. The invention can provide clean oil without foreign matters supplied to various oil pressure machines. A casing head (4) is provided with a suction side opening arranged on a concave arc-shaped sliding contact surface (4B) and communicating a suction port (10D) with a suction flow path (4C) of a valve plate (10); a discharge side opening arranged on the concave arc-shaped sliding contact surface and communicating a discharge port (10E) and a discharge flow path (4D) of the valve plate; and an opening for a pin (14), which is located between the suction side opening and the discharge side opening and used for allowing displacement of a swing pin (11C) of an inclined rotating mechanism (11). In addition, a wall (15) for separarting the suction side opening and the opening for the pin is arranged. And the valve plate is set to be of a length size capable of blocking the suction side opening in an entire inclination rotating range including a minimum inclination rotating poisiton and a maximum inclination rotating poisiton. Thus, the suction side opening and a casing (2) are separated.

Description

technical field [0001] The present invention relates to, for example, a variable-capacity inclined-axis hydraulic pump installed in construction machines such as hydraulic shovels and hydraulic cranes. Background technique [0002] In general, variable capacity inclined-axis hydraulic pumps are used as hydraulic pumps in construction machines such as hydraulic shovels and hydraulic cranes. This variable capacity inclined-axis hydraulic pump is composed of the following components: a cylindrical sleeve body with one axial side serving as a bearing portion; The arc-shaped recessed arc-shaped sliding contact surface, the sleeve head of the suction flow path and the discharge flow path; rotatably arranged on the bearing portion of the sleeve body, and the front end of the insertion side into the sleeve body becomes The rotating shaft of the drive disk; the cylinder body that is arranged in the above-mentioned casing body and extends in the axial direction is spaced apart in the...

Claims

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Application Information

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IPC IPC(8): F04B1/24
CPCF04B1/2042F04B1/2064F04B1/24F05B2210/11
Inventor 海野豪
Owner NIHON KENKI CO LTD
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