Why does the Vibrating Screen Main Beam Break Easily?

The main beam of the Vibrating Screen is the beam that supports the vibrator above the screen frame. Under normal circumstances, the vibrating screen of a box vibrator has a compacted main beam, and its working condition is critical to the life of the screen. However, the vibrating screen often comes off the main beam, which is not easy to repair after falling off, which seriously affects production. So what caused the main beam to break? As a Vibrating Screen Manufacturer, let everyone know.

Ore Dressing Vibrating Screen

Operational factors

According to production experience, the main reasons for the termination of the main beam in use are:

1) Bolts are softened

Loose bolts, the movement of the two exciters will destroy the cycle of inertia force of the main beam, which will inevitably cause the exciting force generated by the vibrator to violently impact the main beam, causing the main beam to receive abnormal impact forces, causing the main beam to fall off and break.

2) There is accumulation

Exciting the girder often results in build-up. If it is not cleaned immediately, it will cause serious local wear of the main beam and cause the main beam to break.

3) Starting from overload or load

Overload or load starting mainly causes great loss to the spring and motor of the screening machine. Often overloading starting will destroy the overall force balance of the sand screening machine, and the sand screening machine will have different amplitudes before and after, and the movement trajectory of the material will change. , The impact on the screen frame and the screen will increase, resulting in cracking.

4) Improper feeding

The improper feeding of the production system, the impact of the material will not only locally wear the screen of the sand screen, but also damage the overall balance of the screen. Therefore, the impact of improper feeding on the life of the sand screening machine is particularly serious.

5) Abnormal driving of the excitation motor

Abnormal operation of the excitation motor will directly cause the main beam to break. Until similar conditions occur, there can be very unusual noise. Some errors in routine maintenance methods can easily cause such accidents. For example, when the vibration exciter is at a high temperature, the use of water to reduce the temperature has a great impact on the life of the vibration exciter and the screen beam.

6) Excessive Excitation Force

Excessive excitation force causes a large load on the sand screening machine, which seriously affects the service life of the sand screening machine beam.

Manufacturing factors

Production must follow the drawing requirements. Pay attention to the marked technical requirements. If there is a slight negligence in the manufacturing process, the main beam is prone to problems.

Pay attention to the following points during production:

1) Welding: Use specified welding rods. No welding defects are allowed. The welding process should ensure that welding deformation is small.

2) Use reasonable technology to ensure the geometrical tolerance of the main beam.

3) Heat treatment according to the drawing recommendations.

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