Device for measuring swash plate angle and vibration characteristic of high-pressure and high-speed axial plunger pump

Abstract

The invention discloses a device for measuring the swash plate angle and the vibration characteristic of a high-pressure and high-speed axial plunger pump. The device comprises a swash plate shaft, aplunger pump shell, a plunger pump sealing cover plate, a magnetic block mounting seat, a noncontact angle sensor, a magnetic block and a plunger pump side end cover. The device has the following advantages: the structure of the axial plunger pump is slightly changed, the processing of the swash plate shaft and the sealing cover plate of the axial plunger pump is only needed, so the processing difficulty is small, and the processing cost is low; the noncontact angle sensor comprises the two following parts: the magnetic block and a sensor body, so the noncontact angle sensor can be easily mounted and maintained; the magnetic block of the noncontact angle sensor is completely sealed, and the magnetic block and the sensor body are separated by the plunger pump sealing cover, so an oil leakage source is reduced; the sensor body is mounted on the outer surface of the sealing cover without arranging a lead wire in the axial plunger pump shell, so the mounting mode is simple; and the swash plate angle and the vibration characteristic of axial plunger pump are measured by sensing the change of a magnetic field direction, so mechanical wearing is avoided.

Description

technical field [0001] The invention belongs to the technical field of hydraulic components, and in particular relates to a swash plate inclination angle and vibration characteristic measuring device suitable for high-pressure and high-speed axial piston pumps. Background technique [0002] The axial piston pump is one of the most important power components in the hydraulic field. Its working principle is that the volume of the sealed working cavity changes through the reciprocating movement of the plunger in the cylinder to realize oil suction and pressure. Axial piston pumps have the advantages of high power density, compact axial installation structure, high efficiency, and convenient flow adjustment, so they are widely used in high-pressure, high-speed, large-flow, and flow-adjusting occasions such as construction machinery, ships, and aviation. [0003] The output flow adjustment method of the axial piston pump is to change the size and direction of the inclination angl...

AI Technical Summary

Problems solved by technology

[0005] Existing methods generally measure the inclination angle and vibration characteristics of the swash plate of the axial piston pump indirectly, such as through indirect measurement of the lug surface of the swash plate of the axial piston pump, or by simulating the axial piston pump during the working process. The swash plate inclination adjustment process reproduces the swash plate angle for indirect measurement, but indirect measurement usually has a large error, and the structure is complex and costly, and the measurement process is complicated

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