What are the common problems with electronic universal testing machines? [Information]

Content Abstract: The electronic universal testing machine is a new generation of dual-space microcomputer controlled electronic universal testing machine designed specifically for universities and research institutes. For example, the WDW-E series microcomputer-controlled electronic universal test machine (floor-standing type) product is actually relatively simple to operate, but it may not be so easy for novices. They may encounter this and that problem during operation. So here I will summarize the problems we encountered when using the electronic universal test machine.

The electronic universal testing machine is a new generation of dual-space microcomputer controlled electronic universal testing machine designed specifically for universities and research institutes. The electronic universal testing machine is actually relatively simple to operate, but it may not be so easy for novices. They may encounter one and another during the operation. So here, Jinan Hengsi Shanda will summarize the problems we encountered when using the electronic universal testing machine. I hope it will be helpful to everyone.

1. The beam only lowers but not rises.

Check whether the upper limit switch of the crossbeam has been damaged and replace the limit switch if it is damaged. The beam moves in the opposite direction: it may be an error in the test machine software, so you can contact the Jinan test machine manufacturer in time

The painted surface is incomplete, not smooth, uneven and inconsistent tones, including freckles, wrinkles, air and adhesions.

Pressing the lift button beam of the universal tester did not respond:

1) The emergency stop button is pressed and the emergency stop button is pulled up.

2) Thermal relay protection, open the electrical control cabinet, and reset the thermal relay.

The upper and lower limit switches of the beam are broken: replace the limit switch.

Turn on the power supply of the test machine. If you don’t hear the “drip…” sound, it means that the power supply is not normal.

The processed surfaces of the electronic universal testing machine parts have rust, burrs, bumps, scratches and other defects. The appearance surface of the WDW microcomputer-controlled electronic universal testing machine (door type) has protrusions, depressions, rough and unevenness and other damages that are not marked. The counterscrew protrudes on the outer surface of the part, and there is a significant eccentricity between its head and the counterhole. The paint and putty of the test machine are not strong enough, cannot resist oil and corrosion, and may cause peeling and falling off.

2. The moving beam is not lifted smoothly.

If it is not electrical reasons, first check that the lubrication between the screw and the base hole is insufficient, or the foreign object is blocked, or the locking screw of the lower nut of the screw is loose. There are freckles on the surface of the electroplated parts, the coating is uneven, and there is peeling. The color of the test machine paint is not beautiful and generous, the tones are not soft, the color is not harmonious, the boundaries of different colors are not clear, and they are contaminated by each other.

Different experimental velocities will obtain different experimental results: the beam movement speed is uneven, so the speed needs to be checked and checked; deformation occurs when the beam is subjected to force: the material of the beam is improper, and the self-gravity is easily increased, which makes the measurement result in incorrect, and the beam should be replaced in time.

Lubricating grease should be frequently added to the hub of the test machine. The primer has not carefully removed rust, sand, oil and other dirt before. The unfabricated surfaces of all parts and accessories of the electronic universal testing machine are not primed.

3. Doors and covers are not easy to load and unload.

The sign is not fixed in a prominent position. There is significant dislocation at the edges of the joint surfaces of the test machine and the components. The fixed position of the sign is inaccurate, uneven, unstable, and crooked. The computer should be placed in a dry and airy room. The various signs on the test machine are unclear. The surface color of the blackened parts becomes uneven, with freckles, rust and other phenomena.

If not used for a long time, power should be turned on once a month. The yellow light of the speed controller is flashing, please replace the fuse on the speed controller. The machine has no action after the point rises (or falls): If the limit lever does not reply in time, move the limit lever up and down with your hand.