A. Product use

Tilt and swing is a basic environment for mechanical, electrical and electronic products placed on water equipment (including ships, seaplanes, offshore oil exploration platforms). All kinds of mechanical, electrical and electronic products placed on water equipment must undergo the role of this environment.

Tilt test is mainly applied to the products which must work normally or reliably when the inclination of the equipment is large due to the reasons of average, handling, unbalanced loading and wind, and the products whose working performance will be obviously affected by the inclined environment.Such effects generally include：

It leads to the destruction of the original force balance in the product system.

The change of bearing stress condition;

The deterioration of bearing lubrication conditions；

Work disorder is caused by the change of internal free liquid level position.

Internal liquid leakage;

Power transmission lines are damaged and components bear redundant stress.

The shielding effect of electronic instruments becomes worse and electronic signal interference occurs.

The technical parameters of electrical products have changed, resulting in data transmission errors.

Swing test is mainly applicable to the products that must work normally or reliably when the ship is swaying due to external forces such as wind and wave, and the products whose working performance will be obviously affected by the swing environment. Such effects generally include:

Additional inertia force caused by rolling may cause additional dynamic load, which may result in abnormal work or structural damage of the product.

It leads to the destruction of the original force balance in the product system.

The change of bearing stress condition;

The deterioration of bearing lubrication conditions;

The working disorder is caused by the turbulence of the internal free liquid level.

Internal liquid leakage

The location of power transmission line is turbulent, which leads to damage such as breaking, discharging and short circuit.

The virtual welding and shedding of components are caused by carrying excess stress.

The shielding effect of electronic instruments becomes worse and electronic signal interference occurs.

The technical parameters of electrical products have changed, resulting in data transmission errors.

The mechanical, electrical and electronic products installed on the water equipment, which have been confirmed to have the aforementioned effects, should undergo tilt and swing tests.

In addition, besides the tilt and sway on the ship, this test must be carried out for other products which have the requirements of installation accuracy, working accuracy and electronic instrument error under the inclined and sway environment. For example, tilt and sway tests must be done on instruments and instruments of military equipment such as armored vehicles and tanks in operation, as well as human adaptability training of pilots and sailors.

B. Major technical data

1. Test maximum load

500kg

2.Maximum height of gravity center

500mm

3. Desk  dimension

（1350×1000）mm

4. Tilt test parameters

Test item

Inclination angle

Test duration

Transverse inclination

±45°

The left and right sides ≥ 30 minutes

Heeling

±30°

Front and rear ≥ 30min

5. Rocking test parameters

Test item

Angle

Period

Rolling

±45°

3～15s

Pitch

±30°

3～15s

6. Individual and compound swing tests can be carried out.

7. When the inclination test is carried out on the test bench, the test bench should be able to remain at the prescribed position under its maximum load, and no obvious shaking and drift should occur.

8. During the rocking test, the track of the rocking amplitude of the test bench should be a smooth sinusoidal curve with continuous variation.

9. Error of rocking period：≤±5%。

10. Sinusoidal waveform distortion：≤±15%。

11. The error of swing angle≤±5%。

12. Angular indexing value：0.1°。

13. Environmental conditions

Ambient temperature：5℃～35℃

Relative humidity：≤80%

14. Power Supply Conditions

Voltage：AC380V±10%

Power：45kVA

15. Water supply conditions

Clean industrial water, PH value 7-8, pressure 0.3 MPa