Analysis plan for pendulum problem of hydraulic universal testing machine

Analysis plan for pendulum problem of hydraulic universal testing machine

Not only the test machineImpact testing machineThere is a pendulum, which is also a must-have in hydraulic universal testing machines. The following two things are about the analysis and treatment of common problems of pendulums in hydraulic universal testing machines.

Common fault 1:

The pendulum position is abnormal, and the swing rod is not marked vertically.

The main reason is that the oil has too much viscosity or the oil is too dirty. Exclusion method: Replace oil with appropriate viscosity.

The force measuring piston rotates with great friction or does not rotate. Troubleshooting method: Check whether the test machine is level and troubleshoot the force-testing piston. There is unstable friction. Exclusion method: Clean the swing shaft bearing, tooth rod, pointer, and lug, adjust the level of the test machine to reduce the existing unstable friction.

Common fault 2:

The hammer returns to the position abnormally, sometimes fast and sometimes slow.

Normally, just rotate the buffer to the appropriate position. However, if the oil hole of the buffer is blocked, or the steel ball of the buffer valve has a stolen property with the inlet contact part or the gap is too large, the buffer will fail. The solution is to clean the buffer valve and adjust the gap between the steel ball and the valve seat to about 0.5mm. Place the oil needle knob to reduce the gap between the oil needle and the valve body, and relist the mark of the A.B.C weight. Also, when the temperature has a great influence, the oil can be replaced appropriately.

MoreMaterial testing machineAll in Jinan Hengsi Shanda Instrument Co., Ltd.