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【Steal Seal】Requirements for Construction Machinery Oil Cylinder

【Steal Seal】Requirements for Construction Machinery Oil Cylinder



1. Lightweight

The requirements for walking, moving, and the weight of the traveling machinery on the road are strictly required by the traffic department.

In order to reduce the weight of concrete pump trucks, some companies use aluminum alloy as cylinder components, and some even use carbon fiber to make the entire boom.

2. Energy saving

The trend of the green world is actually the requirement for the efficiency of the oil cylinder, and improving the efficiency of the oil cylinder is a direct energy saving.

The efficiency of the cylinder is the ratio of the output work of the cylinder to the input work. This value is between 0.7 and 0.98. Different cylinders vary greatly, usually between 0.9 and 0.95. The loss of work mainly comes from three aspects: friction loss of seals, internal leakage loss, and oil throttling loss. For oil cylinders with different designs and working conditions, these three losses are very different. The main oil cylinder of a pump truck from a large company has a friction loss of nearly 20KW during normal operation. The intuitive feeling of the efficiency of the oil cylinder is that the actual output force of the oil cylinder is smaller than the theoretical value, and the efficiency measurement is also based on this.

3. Intelligent

Mechanical automation requirements

Mechanical automation requires sensing the real-time working state of the oil cylinder and controlling it. Therefore, sensors and action controllers (various types of valves) must be installed on the oil cylinder, which puts forward new requirements for the structure and sealing of the oil cylinder.

4. Low failure rate and long life

Low cost of use

The failure rate directly determines the use cost of machinery in a large proportion. For the oil cylinder, the failure rate of the sealing system accounts for about 70%. Therefore, for the oil cylinder, the reliability of the sealing system is the decisive factor for the use cost.

5. Environmentally friendly

Little or no pollution

The working medium does not send leaks or even if it sends leaks, there is no impact on the environment

Design better sealing systems and seals to reduce leakage; use a working medium that does not pollute the environment.

It is theoretically impossible that the working medium does not leak, and it is even more impossible in practice. Therefore, using water as the working medium has become the direction of people's efforts again, because even if the water leaks, it will not cause adverse effects on the environment.

6. Low cost

Low cost and relatively cheap price can be purchased and used, which requires oil cylinder design and manufacturing process

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