It is mainly composed of a car chassis and a ladder operating device. The aerial ladder part is generally telescopic, with a manned platform or a load platform, and the lifting, rotation and extension of the aerial ladder are controlled by a hydraulic device.
This vehicle is mainly used for fire rescue, firefighters can use the ladder truck to climb to the higher floors of the fire building to rescue trapped people. It also plays a role in building construction and maintenance, such as installing curtain walls, repairing external wall equipment, painting external walls and other high-altitude operations.
The truck works mainly through the hydraulic system.
The hydraulic pump is the power source, which is generally driven by the engine of the vehicle. When working, the hydraulic pump transfers the hydraulic oil to each hydraulic cylinder and the hydraulic motor. When it is necessary to raise the ladder, the hydraulic cylinder pushes the boom of the ladder to extend one by one, just like the pull rod antenna. By controlling the flow rate and pressure of the hydraulic oil, the speed and height of the ladder can be accurately controlled.
The rotation of the ladder is realized by the hydraulic motor, which drives the ladder to rotate on the chassis, which can adjust the direction of the ladder and accurately align the target position. There are also corresponding control devices and safety devices at the manned or loaded platform to ensure the stability of the platform and the safety of personnel and items.
What are the differences between the maximum working height and load of the ladder truck
Depending on the vehicle's use, type, brand and other factors:
1. Fire ladder truck:
Maximum operating height: Generally common fire ladder truck operating height between 20 meters to 80 meters, the more typical 23 meters, 32 meters, 48 meters, 52 meters and other models. At present, the world's highest fire ladder truck can reach a height of more than 100 meters, but this kind of ultra-high ladder truck is expensive and relatively small in number.
2. Load: the load of different fire ladder trucks is different, for example, the rated load capacity of some fire ladder trucks working buckets is about 400-600 kg, which can usually carry several people and a small amount of rescue equipment.
3. Aerial ladder moving truck and other aerial work truck:
4. Maximum working height: The working height of this type of ladder truck is 28 meters, 30 meters, 33 meters, 38 meters, 47 meters and other options.
5. Load: the single load of the ladder such as the ladder moving car can generally reach 400 kg.
Precautions for operation of ladder truck
1. Before homework
(1) The ladder truck must be comprehensively inspected, including the vehicle chassis, hydraulic system, ladder structure, safety devices, etc., to ensure that the equipment is in good working condition.
(2) Check the weather conditions and avoid working in bad weather such as strong winds, heavy rain, lightning and so on, because bad weather may affect the stability of the ladder.
2. Homework
(1) Operate the ladder truck in strict accordance with the operation manual. The operator should be familiar with the control device and control the lifting, rotation and extension speed of the ladder.
(2) Pay attention to load limit, can not overload. Overloading may cause the ladder to tilt and collapse, leading to serious accidents.
(3) Always pay attention to the working status of the ladder and the surrounding environment, ensure that there are no obstacles in the working area, and avoid collision between the ladder and buildings, wires and other objects.
(4) The operator on the platform should fasten the safety belt and ensure that the safety belt is securely connected.
3. After homework
(1) Lower the ladder, return the vehicle and ladder equipment, and turn off the power and hydraulic system.
(2) Check the equipment again to prepare for the next use.
