In the cold winter, adjusting the brightness of the street lights does not have to go outdoors, sitting in the monitoring center can do it; in large shopping malls, parking lots, smart phones can tell you where the toilet is, where the car is parked, and how to install navigation through the LED lighting system. Can do it. On January 6th, the Cross-Strait Coldland Semiconductor Lighting Technology Forum launched a wide-ranging discussion on topics such as hotspots and latest achievements in cold semiconductor lighting technology research and development.
According to the Harbin Science and Technology Bureau, at present, Harbin applies 150,000 LED lamps in the fields of ice and snow, road lighting, indoor lighting, etc., with a total investment of nearly 200 million yuan, achieving an effective integration of ice and snow culture and art, characteristic architectural art and semiconductor lighting. Create a dream of a dreamy ice city and a bright city.
According to Fan Qingwei, director of the Harbin Lighting Inspection Center, the city has applied 150,000 power LED lamps around the snow and ice landscape, road lighting, indoor lighting and other fields, with a total investment of nearly 200 million yuan.
Whether LED lighting is suitable for use in low temperature weather, Harbin Lighting Testing Center conducted cold reliability tests on three cities: Mohe, Jiagedaqi and Harbin. For the first time in the forum, the results of the 12-month cold lighting test were announced. The LED lights can still be used normally under the extreme cold weather of minus 40 degrees. Compared with the traditional high-pressure sodium lamps, the energy consumption is more than 60, the application performance is relatively stable, and the maintenance rate is low.
Intelligent street lights can remotely control which street lights are dim, and there will always be enthusiastic citizens calling to tell the electric department. In Taiwan, there is no need to bother the public. The street lamp management unit can receive a warning at the first time through a unified monitoring center. The computer immediately reports the cause of the malfunction and can realize remote control.
Hoisting Mechanism And Spare Parts
The hoisting mechanism for a Tower Crane typically consists of a combination of a motor, a gearbox, wire ropes, and a hook block. Here is a breakdown of its components and how they work together:
1. Motor: The hoisting motor provides the power needed to lift and lower loads. It is usually an electric motor that generates high torque to handle heavy loads.
2. Gearbox: The motor's rotational motion is transmitted to the hoisting drum through a gearbox. The gearbox helps increase the torque and reduce the speed of the motor, enabling the crane to lift heavy loads at a controlled speed.
3. Hoisting Drum: The hoisting drum is a cylindrical drum around which the wire ropes are wound. It is directly connected to the gearbox and rotates as the motor operates. The drum's size and design determine the amount of Wire Rope it can hold.
4. Wire Ropes:
The wire ropes are wound around the hoisting drum and connected to the hook block. These ropes are made of high-strength steel and have a high load-bearing capacity. Multiple wire ropes are used to distribute the load evenly and ensure stability during lifting operations.
5. Hook Block: The hook block is attached to the lower end of the wire ropes and is responsible for carrying the load. It consists of a pulley system with one or more sheaves, which allows the wire ropes to change direction and support the load securely.
During operation, the motor drives the hoisting drum through the gearbox. As the drum rotates, the wire ropes are wound or unwound, depending on the direction of rotation. This movement raises or lowers the hook block, allowing the crane to lift or lower loads.
The hoisting mechanism is controlled by the crane operator using various controls and switches. Safety features such as limit switches and overload protection systems are also incorporated to prevent accidents and ensure safe lifting operations.
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