What is the characteristic of common crane
Is suitable for the larger construction units or temporary liquidity dispersed site rubber-tyred cranes and open-air handling advantages: (1) the speed is lower than the vehicle type, higher than that of crawler, small bending radius, good cross-country performance, grade ability was 17% ~ 20%; (2) the use of a leg heavy lifting, which can be done on a flat ground without a leg, can be done on all sides, and can also be used to walk slowly. (3) the stable performance is better. Disadvantages: (1) the mobility is worse than the car. (2) the speed is slow and the road is higher. Applicable scope: is suitable for the relatively fixed construction site, especially suitable for narrow construction site Crawler crane advantages: (1) the speed is slow, good cross-country performance, climbing ability big, the traction coefficient as the tyred 1.5 times; (2) it can be constructed in soft ground such as mud and swamps, and it is relatively stable. (3) a variety of work devices can be changed for a wide range of jobs. Disadvantages: (1) destructive to the road while driving; When the distance is longer, it is necessary to ship with the platform trailer. Application range: suitable for a more fixed, ground condition, which is used in crane construction.
Disadvantages: (1) when lifting heavy, you must use a leg, not load. (2) the turning radius is large and the off-road performance is poor. (3) the box type has a heavy lifting arm and affects the weight; (4) the maintenance requirement is high. Scope of application:
Disadvantages: (1) the body is large, apart from the light, it needs to disintegrate, and it takes time and effort to dismantle it. (2) the transfer fee is high and the usage period is short and not economical; (3) high altitude work and high safety requirements; We need to build a foundation. Application scope (1) civil construction of high and high level. (2) construction of heavy industrial plants, such as the structure of the main plant of the power station and the lifting of equipment and the lifting of blast furnace equipment. (3) the internal climbing style applies to the cramped conditions of the construction site. Automobile crane advantage: (1) adopt gm or special car chassis, can move at the speed of the car, be flexible and move fast. (2) it adopts the hydraulic drive, the transmission is stable, the control of the province force, the hoisting speed is fast, the efficiency is high. (3) the heavy arm is folding, the performance is flexible, the transfer is fast.
Lifting machinery is a kind of of weight can perform vertical and horizontal moving machinery, in industrial and civil construction projects as the main construction machinery and widely used. There are many different kinds of hoisting machinery, commonly used for mobile crane in construction, including: tower crane, auto crane, wheeled cranes, crawler cranes, etc., as well as the most basic of vertical transport hoisting machinery, hoist and high-rise building construction lifter. Commonly used crane characteristics and applicable scope of below: tower crane 1. Advantages: (1) the multi-usage models (e.g., mobile, fixed and attached type, etc.), and can meet the need of construction of different; (2) the rise of attachment shall be up to 100 megabytes; (3) the effective operation shall be 80% of the total amount; (4) you can walk in position with the load. (5) the power is motor, reliability, maintainability is good, the running cost is extremely low.
