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Friction Loading Device for Load Simulation of Front Swing Center Nozzle

A load simulation and loading device technology, which is applied in the testing of measuring devices, instruments, and mechanical components, can solve problems such as the inability to simulate the load characteristics of the front swing center nozzle, the difficulty in designing the load simulation system, and the low accuracy of friction torque loading. Achieve the effect of good loading accuracy, stable friction coefficient and convenient torque calibration

Active Publication Date: 2017-01-25
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This brings great difficulties to the design of the load simulation system.
The existing load platform using open-loop loading technology has low friction torque loading accuracy, or poor loading stability, and crawling phenomenon occurs during operation, which cannot simulate the load characteristics of the front swing center nozzle
Although the load table using passive hydraulic loading technology has high loading accuracy, the servo mechanism cannot accurately load the friction torque during dynamic tests such as transient characteristics.

Method used

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  • Friction Loading Device for Load Simulation of Front Swing Center Nozzle
  • Friction Loading Device for Load Simulation of Front Swing Center Nozzle
  • Friction Loading Device for Load Simulation of Front Swing Center Nozzle

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0022] like figure 1 As shown, a front swing center nozzle load simulation friction loading device provided by the present invention includes a friction loading hydraulic system 1 and a friction loading mechanism 2 communicating with the friction loading hydraulic system 1 . The friction loading hydraulic system 1 provides hydraulic power for the friction loading mechanism 2 .

[0023] like figure 2 As shown, the friction loading hydraulic system 1 is composed of an oil source 101, an oil hose 102, an oil return hose 103, a high pressure ball valve 104, a low pressure ball valve 105, a high pressure filter 106, a proportional pressure reducing valve 107, a pressure gauge switch 108, a pressure gauge 109. Electromagnetic reversing valve 110 is formed. The oil outlet of the oil source 101 communicates with the input end of the high-pressure ...

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Abstract

The invention belongs to a friction loading device and specifically discloses a front-oscillation center spray pipe load simulating friction loading device. The device comprises a friction loading hydraulic system and a friction loading mechanism; the friction loading hydraulic system comprises an oil source, a high-pressure ball valve, a high-pressure filter, a proportional pressure reducing valve and an electromagnetic directional valve; the oil outlet of the oil source is communicated with one end of the high-pressure ball valve by use of a pipeline, the other end of the high-pressure ball valve is communicated with one end of the high-pressure filter by use of a pipeline, the other end of the high-pressure filter is communicated with one end of the proportional pressure reducing valve by use of a pipeline, and the other end of the proportional pressure reducing valve is communicated with one end of the electromagnetic directional valve by use of a pipeline; the other end of the electromagnetic directional valve is communicated with the input end of the friction loading mechanism; the friction loading mechanism comprise an outer barrel, a supporting barrel, a friction disc, a rear end cover, a bearing, a hydraulic cylinder, a fixed friction assembly, a movable friction assembly and a rotating shaft. The front-oscillation center spray pipe load simulating friction loading device is capable of simulating the friction load characteristics of a front-oscillation center spray pipe, and is high in friction torque loading accuracy and good in loading stability.

Description

technical field [0001] The invention belongs to a friction loading device, in particular to a friction loading device for simulating the load of a front swing center nozzle. Background technique [0002] Compared with the servo system characteristics of the front swing center nozzle and the rear swing center nozzle, the structural stiffness is about 6.476×10 6 N / m, the equivalent mass is 336.6kg; the rear swing center nozzle servo system has a structural rigidity of 1.0×10 7 N / m, the equivalent mass is 192.7kg. From the analysis results, the resonant frequency of the servo system of the front oscillating nozzle is significantly lower than that of the rear oscillating nozzle, from 220rad / s to 140rad / s; while the resonance peak is higher, increasing from 1.5dB to 3dB; The phase lag of the front oscillating nozzle servo system is significantly higher than that of the rear oscillating nozzle servo system. Taking the system characteristic angular frequency point ω=20rad / s as an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
Inventor 焦玮玮胡宝军王跃轩
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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