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Variable capacity inclined axis 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: 2017-06-27
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 is accelerated by the metal powder, and the sealing performance is reduced.

Method used

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  • Variable capacity inclined axis hydraulic pump
  • Variable capacity inclined axis hydraulic pump
  • Variable capacity inclined axis hydraulic pump

Examples

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Effect test

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 capacity inclined axis hydraulic pump. The present invention provides clean oil that can be supplied to various hydraulic equipment without foreign matter. Set in the casing head (4): open on the concave arc-shaped sliding contact surface (4B), and communicate with the suction port (10D) of the valve plate (10) and the suction side opening of the suction flow path (4C) ( 12); Open on the concave arc-shaped sliding contact surface, and communicate with the discharge port (10E) of the valve plate and the discharge side opening (13) of the discharge flow path (4D); and between the suction side opening and the discharge side opening , and a pin opening (14) for allowing the displacement of the swing pin (11C) of the tilting rotation mechanism (11). In addition, a partition wall (15) is provided to partition the suction side opening and the pin opening. In addition, the valve plate is set to have a length dimension capable of closing the suction-side opening in the entire tilting range including the minimum tilting position and the maximum tilting position. Thereby, the suction side opening can be isolated from the inside of the sleeve (2).

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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Patent Type & Authority Patents(China)
IPC IPC(8): F04B1/24
CPCF04B1/2042F04B1/2064F04B1/24F05B2210/11
Inventor 海野豪
Owner NIHON KENKI CO LTD
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