Transfer trolley, an motor driven factory transport vehicle. It has the advantage of simple structure, easy maintenance, large carrying capacity and less pollution. Widely used in machinery manufacturing and metallurgical plant, cooperate with cranes to transport heavy loads inside workshop. They can be divied in many different types as shown below:
· KPT type transfer trolley is powered by the cable laid on the ground directly. For its simple structure, the price is more competitive. While the distance is often limited in 100 meter.
· KPJ type transfer trolley is powered by the cable from the cable reel. With the cable reel, the moving distance is improved to 200 meter compared with the KPT type.
· KPX type transfer trolley is powered by the storage battery, more flexible and safe. While the capacity and the duty group are all affected by the storage battery. Especially, the price and the life span of the bettery is also an important issure.
· KPC type transfer trolley is powered by the slide wire along the rail, so the moving distance is unlimited. The slide wire is the key point and also the weakest link.
· KPD/PKDZ type transfer trolley is powered by the low voltage DC power from the rail. Powered by the rail, the system is more reliable compared with the KPC type; The sytem is also more complicated and expensive.
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Analysis of LED Lighting Application Prospects in Global Road Lighting
The so-called LED is a semiconductor that can convert electrical energy into light energy. LED can be called a light-emitting diode. It is a solid-state semiconductor device that can convert electrical energy into visible light. It can directly convert electricity into light. . The LED adopts electric field illumination, and the LED directly encapsulates the three primary color chips emitting red, green and blue wavelengths to form a multi-chip white LED, which is matched by an appropriate ratio according to the principle of spatial color mixing, so that three colors of light are matched. Mixed into white light, this LED lighting method is called three primary color LED direct color mixing method. LED technology is a breakthrough in lighting technology and an innovation. I believe that the future LED technology will be more advanced and more perfect. The so-called LED is a semiconductor that can convert electrical energy into light energy. LED can be called a light-emitting diode. It is a solid-state semiconductor device that can convert electrical energy into visible light. It can directly convert electricity into light. . In the context of the energy crisis and the increasingly harsh global ecological environment, the form of saving and rational use of effective resources is unstoppable. All these forms of change have changed people's outlook on life and values. The energy shortage will curb the rapid economic development of a country. Electric energy is an indispensable thing in a country. Then, the amount of electricity spent on road lighting every year accounts for 20 to 30% of the global electricity consumption. Therefore, in order to alleviate power shortages and reduce energy consumption, it is necessary to promote The use of green light sources, high energy-saving, long-life, environmentally friendly LED lighting has gradually entered the field of vision. LED illuminators will use very little energy to achieve optimal lighting, which will greatly reduce the power required for road lighting. The replacement of street lamps in road lighting is also a large economic expense, and LED lighting has the advantage of long life. The current life of incandescent lamps on the market is about 1,000.