PQC tower crane electrical control system is an economical electrical control solution based on the advanced foreign technologies.The system integrates slewing, luffing and hoisting mechanisms and power supply into a case.Compared with RCS,PQC electrical control system is more compact in structure and simper & more economical in circuit. This electronic control cabinet slewing mechanism adopts RCV speed regulation with features of stable operation and accurate positioning.Luffing mechanism adopts 2 control modes:3-gear self-coupling voltage reduction + eddy speed regulation or 2-gear pole-changing speed regulation. Hoisting mechanism adopts 3-speed motor pole -changing speed regulation. The traditional circuit is improved, overcoming problems of easy contactor damage and large impact on the mechanism during hoisting or speed reduction of motor. Temperature range:-20ºC-+40ºCHumidity:lower than 85%RH(no moisture condensation)
Altitude:the attitude of installation location shall not be higher than 1000m. Power grid quality:the voltage fluctuation range shall not exceed ±10% of the rated voltage. Power capacity shall be guaranteed fully.
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| Model | 25PC13A | 33PC15 | 40LVF13 | 40LVF15 | 60LVF25 |
| Rated Single Rope Tension KN | 13 | 15 | 13 | 15 | 25 |
| Magnification | 4 | 4 | 4 | 4 | 4 |
| Rated Power of the motor KW | 18/18/3.5 | 24/24/5.5 | 30 | 30 | 45 |
| Working Frequency Hz | 50 | 50 | 6-50-100 | 6-50-100 | 6-50-100 |
| Hoisting Speed m/min | 33.5-17-3 | 37.5-19-3 | 2.5-18-36 | 2.5-20-40 | 2.5-20-40 |
| Hoisting Capacity t | 2.5-2.5-5 | 3-6-6 | 5-5-2.5 | 6-6-3 | 10-10-5 |
| Rope capacity | 360 | 400 | 360 | 400 | 500 |
| Nominal Diameter of Wirerope mm | 10 | 12 | 10 | 12 | 14 |
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For SUMITOMO Cylinder Seal Kit
Maintenance of Sumitomo hydraulic cylinder seals
Daily maintenance and upkeep can effectively solve the sealing problem of hydraulic cylinders, extend the service life of hydraulic cylinders, and improve the work efficiency of construction machinery.
1. Regularly check the wear of the hydraulic cylinder seals, and if severe wear is found, it should be replaced in a timely manner.
2. Clean the hydraulic cylinder seals to prevent impurities such as dust and sand from entering the interior of the seals.
3. Use appropriate hydraulic oil and avoid using expired or non compliant hydraulic oil to avoid damage to the hydraulic cylinder seals.
4. Avoid using hydraulic cylinders under excessive pressure or load to avoid damage to the seals.
5. Regularly check the liquid level and pressure of the hydraulic cylinder to ensure its normal operation and avoid damage to the sealing components due to hydraulic cylinder failures.
6. When the hydraulic cylinder is stopped for a long time, regular maintenance should be carried out, such as applying anti rust oil, to prevent aging or deformation of the sealing components.
For Sumitomo Cylinder Seal Kit, For Sumitomo Center Joint Seal Kit, Sumitomo Center Joint Seal Kit, Sumitomo Bucket Cylinder Seal Kit
Safe Seal Technology Co., Ltd. , https://www.sprsealkits.com