Method for detecting impact energy of hydraulic breaking hammer
A technology of hydraulic breaker and detection method, which is applied in the direction of measuring device, force/torque/power measuring instrument, instrument, etc., which can solve the problems of unusable, neglected piston action area, piston weight, etc., and achieve safe operation and simple test method Effect
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Embodiment 1
[0020] Such as figure 1 Shown, a kind of detection method of hydraulic breaker impact energy, this method comprises the following steps:
[0021] Step 1) The pressure sensor collects the pressure signal and sends it to the data acquisition card. Depending on the device to be detected, the pressure sensor has a different installation position when used. The pressure sensor can be set at the valve of the nitrogen chamber of the nitrogen explosion hydraulic hammer and the oil nozzle of the upper chamber, or it can be set at the gas-liquid The gas valve of the nitrogen chamber of the combined hydraulic hammer and the oil nozzle of the upper chamber can also be arranged at the oil nozzle of the upper chamber and the oil nozzle of the lower chamber of the full-hydraulic hydraulic hammer.
[0022] Step 2) The data acquisition card converts the pressure signal, and sends the converted signal to the computer;
[0023] Step 3) The computer stores the pressure signal in the memory, and...
Embodiment 2
[0045] For nitrogen explosion hydraulic hammer, such as Figure 4 As shown, when the return stroke starts, the piston upper chamber 42 leads to oil return, and the lower chamber 41 leads to high-pressure oil. The high-pressure oil in the lower chamber 41 pushes the piston 44 and makes the piston move up against its own weight and the pressure of the nitrogen chamber 43 . At this time, nitrogen gas is compressed on the top of the piston, and the pressure of nitrogen gas increases, which makes the piston decelerate and finally completes the return stroke.
[0046] The piston starts to stroke, and the lower chamber 41 switches the oil circuit by the reversing valve 46, so that the upper chamber 42 leads to high-pressure oil, and the lower chamber 41 leads to oil return. During the stroke, the oil pressure of the upper chamber and the nitrogen pressure make the piston move down and perform work on the outside in a rapid stroke. Considering the gravity of the piston, ignoring the ...
Embodiment 3
[0051] For nitrogen explosion hydraulic hammer, such as Figure 5 As shown, most full hydraulic breaking hammers, when the return stroke starts, the piston lower chamber 51 leads to high-pressure oil, and the upper chamber 52 leads to return oil. Affected by the high-pressure oil in the lower chamber, when the piston 53 accelerates and moves up to a certain position, it feeds back to the reversing valve 55 through the signal hole. Due to the annular area A of the upper chamber of the piston 2 Greater than the annular area of the lower chamber A 1 , so the oil pressure in the upper chamber is greater than the oil pressure in the lower chamber, and the piston returns to brake under the pressure difference. At the same time, the stroke starts under the differential connection, returns to the initial state, and starts the next return journey. Considering the gravity of the piston and ignoring the frictional resistance suffered by the piston when it moves, the force balance fo...
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