Supporting hatch coverhydraulic systemThe hydraulic system is used for folding hatch covers on bulk carriers. The opening or closing of the hatch cover is achieved by the extension and retraction of hydraulic cylinders installed between the end hinge arm of the active cover plate and the deck.

1. Ship canopy oil station configuration: adopting dual oil pumps and dual motors, one for backup and one for use, convenient for switching between use.

2. Ship canopy hydraulic cylinder configuration: For bulk carriers under the size of 1000, the entire ship has two compartments, with one compartment equipped with 4 or 6 hydraulic cylinders. For high tonnage ships, the number is correspondingly increased. The size of the hydraulic cylinder for the hatch cover is mainly determined by the various forces required to lift the hatch cover. The larger the lift, the larger the hydraulic cylinder configured.

3. Operation mode of ship hatch cover: manual or electric.

4、 船舶舱盖控制方式：串联和并联两种形式。

Reasons and Control Measures for Noise Generated by Hydraulic System Impact in Ship Hatch Cover

(1) Reasons for noise generated by hydraulic impact

When the hydraulic system is working, various valve components in the pipeline are frequently opened and closed, and the hydraulic pump starts and stops intermittently, causing severe fluctuations in the liquid pressure inside the entire hydraulic system pipeline, with huge differences and peak values several times higher than normal pressure. This causes pressure stamping on the pipeline system, seals, and other components, leading to vibration and noise.

(2) Control measures for hydraulic impact noise

① To prevent hydraulic shock caused by hydraulic cylinder braking, a buffer device can be added at the stroke end of the hydraulic cylinder.

② Install auxiliary components such as accumulators in the hydraulic circuit to absorb impact energy.

③ Installing damping devices or setting damping circuits at the control valve spool end can reduce the movement speed of the spool and prolong the valve opening and closing time, thereby achieving the goal of eliminating hydraulic shock.

Technical requirements for hydraulic system of ship hatch cover:

1. Before assembly, all components need to be sorted and cleaned thoroughly

2. Assemble when conditions permit, and tighten all fasteners without any looseness during assembly.

3. The length can be customized according to specific customer needs or based on on-site craftsmanship.

4. Unqualified products must be strictly controlled and not assembled.

5. After assembly, the overall appearance is beautiful and clean.

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