Crawler crane (crawler crane), is a high-rise building construction with self-propelled crane. Is the use of a rotary crane boom crawler. Tracked ground area, through the good, strong adaptability, walking with load applied to the construction site lifting operations. Excavation can be carried out, rammed earth, piling and other operations. But walking slowly, the site needs to transfer to other vehicles handling. Crawler crane from the power plant, work organization and boom, turntable, chassis and other components. Failure analysis crawler crane walking walking deviation deviation is a common fault crawler crane, causing many reasons to walk deviation crawler crane walking, especially at the site, due to lack of measuring instruments and test equipment, analysis more difficult.
When push joystick 5:00, joysticks provide pressure oil to the brake 1, open brake, while the joystick to the main valve 4 provide pressure oil push the main valve spool movement, the main valve to provide pressure oil motor 2, the motor is running, thereby drive running gear operation, to achieve crawler cranes walking. The parking brake is played hydraulic brake, downhill speed and so on. Walking from the entire hydraulic system, the motor, brake valve, the main valve and joystick and other components in any one of a fault, will cause walking deviation. According to experience, the failure rate in the order of descending motor control handle, the main valve and the brake,
Crawler crane is on the walking track chassis fitted with lifting gear hoisting machinery, is self-propelled, fully rotating crane Ichikawa, as shown in Figure 3-7. This crane has a flexible, easy to use, on grounds generally flat solid load characteristics can travel and jobs. Crawler crane is commonly used in structural engineering crane hoisting machinery. Crawler cranes can be divided in different ways according to the Transmission mechanical (QU), hydraulic (QUR) and electric (QUD) three. Common hydraulic, electric current transfers need not apply to construction work site.
It has a starting weight or lifting moment. The selection depends on the starting weight, working radius and lifting height, often referred to as "lifting the three elements" between the lifting of the three elements, there is a relationship of mutual restraint. Technical performance of its expression, usually lifting or lifting performance performance graph corresponding digital form. Commonly used in structural engineering installation made crawler cranes, mainly in the following models: W1 a 50, W1 a 100, W2-100, Northwest 78D and so on. In addition, there are some imported models. Crawler device easily damaged and require frequent refueling checks cleared filthy. Because the crane when the load on the ground unit pressure, should generally be working on a more solid and relatively flat ground. When necessary, the laying of stone, sleepers, steel or special steel and wood roadbed boxes, increase the carrying capacity of the ground.
Crawler crane is on the walking track chassis fitted with crane lifting mechanism is self-propelled, full rotation of a crane this crane Chuan flexible, easy to use, on the formation of a solid general travel sites can load and the characteristics of the job. Crawler crane is commonly used in structural engineering crane hoisting machinery.