The advantage of spider aerial lift compared with self-propelled aerial working platform is that spider aerial lift can adapt to work in more complicated sites. This advantage, even if the track type of different aerial working platforms are not capable of, for example, in the slope, the soil is relatively loose and other places, spider aerial working platform can easily maintain balance. So, what is the system structure and hydraulic control principle of spider aerial lift? There are two main aspects:
1. The working platform can be divided into two parts on the structure of the upper and lower parts, the lower part includes the walking device and legs, the upper part includes the turntable, the big arm, the small arm and the basket. Walking mechanism without traction, the choice of wheel independent drive mode; four legs placed on the ground after the shape of the spider legs, in the whole process of operation to support the operating platform; turntable mounted on the chassis, the turntable can be achieved by rotating the whole vehicle 360, within the scope of the clockwise and counterclockwise rotation; working arm for the telescopic type; basket is used to load heavy loads or operators to the specified operating height for the job, and can be in the Shi70° within the rotation, with the arm, the small arm and the working platform, the basket is used to load heavy objects to the specified operating height for the job, and can be in the Shi70 The basket is used to load heavy objects or operators to the specified working height for operation, and can rotate within 70°, which can realise different heights and different working ranges with the telescopic and luffing working arm.
2. From the form of oil circuit, the working platform adopts double pumps and double circuit system, which reduces the loss of system energy and improves the working efficiency; from the control mode, the working platform adopts electro-hydraulic proportional valve control, i.e., electro-hydraulic proportional valve is used together with the electric controller to achieve continuous control and remote control; from the safety point of view, the working platform owns the emergency stop device, overload device, tilting device, overload device, overload device, tilting device, overload device, tilting device, tilting device, tilting device, tilting device, tilting device, tilting device, tilting device, tilting device, tilting device and tilting device. Overload device, tilting device, anti-collision device and other safety devices. Anti-collision device and other safety devices to ensure that the operating platform in a safe and reliable environment.
