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Variable pump swash plate control moment measuring device

A technology for controlling torque and measuring devices, which is applied in the field of plunger pumps, can solve problems such as hard to obtain and oil pressure pulsation, and achieve the effects of easy replacement, reduced mass, and easy assembly, commissioning, and installation

Active Publication Date: 2019-11-12
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the force of the swash plate is often obtained through numerical research and software simulation. However, many factors are ignored in the calculation process, and they are all considered ideal models. Moreover, with the high-speed rotation of the pump, the oil pressure fluctuates. It is difficult to obtain a more accurate result

Method used

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  • Variable pump swash plate control moment measuring device
  • Variable pump swash plate control moment measuring device
  • Variable pump swash plate control moment measuring device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A variable displacement pump swash plate control moment measuring device, such as figure 1 shown, including

[0039] Host computer 3-3, controller 3-4, data acquisition card 3-5, pressure oil source 2-3, high frequency pressure sensor 3-2, swash plate drive cylinder 2-1, plunger assembly 1-4, Disc 1-3, shaft assembly 1-1, resolver 3-1, variable frequency motor 3-10, servo valve 2-2, loading system 3-9, rotor 1-8, ball screw 1-9, integrated valve block Body 2-4, valve plate 1-10, indicator needle 1-13;

[0040] The upper computer 3-3 controls the speed of the variable frequency motor 3-10, the loading pressure of the proportional overflow valve 3-12 in the loading system 3-9, and the action of the servo valve 2-2 through the controller 3-4;

[0041] The variable frequency motor 3-10 drives the rotor 1-8 through the shaft assembly 1-1, and the rotor 1-8 drives the plunger assembly 1-4 to move. When the plunger assembly 1-4 moves, the slider end of the plunger assembly 1...

Embodiment 2

[0055] In this embodiment, a device for measuring the control moment of the swash plate of a variable variable pump is designed. Through this device, the swing torque of the swash plate under different working conditions and different swing angles can be accurately measured, and provide data support for subsequent mechanism design. This embodiment It can also measure the control torque of the swash plate of the existing model variable pump, which can provide support for the improved design of the pump. At the same time, the device itself is also a valve-controlled volumetric servo pump, which can be directly applied to a volumetric static pressure servomechanism.

[0056] This embodiment is mainly composed of three parts: the pump body part 1, the swash plate variable system 2, and the measurement and control system 3.

[0057] pump parts such as Figure 2-4 As shown, the pump core of the pump to be tested includes the rotor 1-8, the plunger assembly 1-4, the shaft assembly 1...

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Abstract

The invention discloses a variable pump swash plate control moment measuring device. The variable pump swash plate control torque measuring device comprises a pump body part, a swash plate variable system and a measurement and control system. By means of the device, the swing moment of a swash plate under different working conditions and under different swing angle conditions can be accurately measured, and data support is provided for subsequent mechanism design; the control moment of the swash plate of an existing model variable pump can be measured, and support can be provided for improvement design of the pump; and meanwhile, the device is a valve-controlled volume type servo pump and can be directly applied to a volumetric static pressure servo mechanism, and belongs to the technicalfield of plunger pumps.

Description

technical field [0001] The invention relates to a measuring device for a swash plate control torque of a variable variable pump, which belongs to the technical field of plunger pumps. Background technique [0002] The electromechanical hydrostatic servo mechanism has outstanding characteristics such as strong heavy load capacity, high power density, low heat generation, easy structural integration design and redundant design. The electromechanical static pressure servo mechanism has two forms of variable speed and variable displacement. The variable displacement refers to changing the flow rate of the pump flowing into the electromechanical static pressure actuator by changing the displacement of the positive displacement pump to play a control role. The design of the swash plate variable mechanism is a difficult point of the displacement variable pump. During the variable process, the rotor of the pump core will maintain high-speed rotation, and the reciprocating motion of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B51/00
CPCF04B51/00
Inventor 冯伟刘会祥苗克非于斌孙东宁李红岩
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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