33PC15/45rcs/55rcs/70rcs25 Hoisting and Trolley Mechanism for Tower Crane
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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Potassium Chloride is a common potash fertilizer. It can improve crops ability of drought resistance, cold resistance, lodging resistance,and pest disease resistance. It can also promote flowering and fruiting, and better use of nitrogen to increase protein content, and promote the production of sugar and starch.
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Potassium Chloride |
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Appearance |
White or red Powder/crystal/granular |
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Total nutrient |
98% min |
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K |
60% min |
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Purity |
95% min |
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Moisture |
1% max |
1. Not suitable for use in saline or alkaline lands and crops such as sugarcane, peach,grape,etc.
2. Chlorine-like crops: onion, spinach, celery, and cabbage
3. Chlorine-resistant crops: rice, wheat, barley, corn
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