Detection method and detection device for impact energy of hydraulic breaking hammer

Abstract

The invention relates to a detection method and a detection device for impact energy of a hydraulic breaking hammer. The detection method comprises the following steps: firstly, a pressure sensor detects the impact force of a drill rod of the breaking hammer and converts into voltage signals. Secondly, a data collection card collects the voltage signals. Thirdly, a computer reads data collected by the data collection card and processes the data. And lastly, the computer outputs the processing result through an output module. The detection device comprises the pressure sensor, the data collection card, the computer and the output module, wherein the pressure sensor, the data collection card, the computer and the output module are connected in sequence, and the pressure sensor is fixed on an action level plane of the drill rod of the breaking hammer through a senor fixing part. Compared with the prior art, the detection method and the detection device for impact energy of a hydraulic breaking hammer have the advantages of being simple in method, convenient to operate, accurate in detection result, and the like.

Description

technical field [0001] The invention relates to the field of performance detection of a breaker, in particular to a method and device for detecting the impact energy of a hydraulic breaker. Background technique [0002] The impact energy reflects the breaking capacity of the hydraulic breaker, and the impact frequency reflects the breaking rate of the hydraulic breaker. As two performance parameters, impact energy and impact frequency determine the working quality of the breaker. In the samples or technical documents of many manufacturers, only the impact frequency is often provided, and the impact energy is not marked. Compared with the impact frequency, the detection of impact energy has higher requirements in terms of technology and cost, and the impact energy obtained due to different detection methods is also different. Because there is no unified testing method and standard in China at present, the accuracy, repeatability, and comparability of the measured results are...

AI Technical Summary

Problems solved by technology

[0004] Patent CN1387030 is a device and method for calculating the kinetic energy of the piston by measuring the pressure of the nitrogen chamber. The measurement method is simple and easy to implement, but it cannot be used for the full hydraulic action hydraulic hammer without the nitrogen chamber.

At the same time, it calculates the displacement of the piston movement based on the volume change of the nitrogen chamber, calculates the maximum speed of the piston movement, and finally obtains the kinetic energy, but ignores the active area of ​​the front and rear chambers of the piston and the weight of the piston itself

Although the resulting results reflect the kinetic energy of the piston to a certain extent, they cannot accurately reflect the impact energy of the hydraulic impactor.

Generally, although the impact energy detected by similar methods reflects the kinetic energy of the piston to a certain extent, there is a certain energy loss after being transmitted to the drill rod, which makes the detected impact energy inconsistent with the actual energy acting on the object, and the measurement results are more accurate. deviation from the true value

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