Rough-terrain wheeled crane

Abstract

The utility model discloses a rough-terrain wheeled crane of which all actions are driven in a full-hydraulic manner, and the rough-terrain wheeled crane can realize stepless speed change and has stable speed according to different work conditions, has the advantages of small impact, simple chassis arrangement, light complete vehicle weight, and is portable, safe and reliable in operation. The rough-terrain wheeled crane is provided with an electrohydraulic control system, a driving device and a steering device which are used for realizing fast switch among a plurality of driving modes and steering modes, thereby achieving small turning radius, fully exerting the power performances of an engine, improving the fuel oil economy and saving energy resources. The rough-terrain wheeled crane has a special underframe of an integral box type closed structure and is separately and rigidly suspended, an arc-shaped crane arm and an X-shaped telescopic support leg ensure good cross-country performance, mechanical property and working condition adapting performance of the entire rough-terrain wheeled crane during running and operating. The rough-terrain wheeled crane is convenient to maintain, and especially suitable for small construction places such as airports, oil fields, ports, wharfs, storehouses and other building sites.

Description

technical field [0001] The invention belongs to hoisting machinery and relates to an off-road tire crane. Background technique [0002] Rough terrain cranes are mainly used in narrow construction sites such as airports, oil fields, ports, docks, and warehouses. The crane is required to be convenient and reliable to operate and move, with small turning radius, light weight, good off-road performance, good lifting performance and high strength and rigidity. However, the main structural features of the off-road tire cranes on the market are as follows: 1. The whole vehicle is driven by mechanical transmission, and the power is transmitted from the engine to the front and rear drive axles through the torque converter, gearbox, and transfer case through the transmission shaft. , and then the power is transmitted to the wheel reducer through the main reducer through the half shaft to complete the driving of the whole vehicle. The chassis structure becomes more complex, the weigh...

AI Technical Summary

Problems solved by technology

The chassis structure becomes more complicated, the weight of the whole vehicle increases, and the energy consumption increases

2. Straight-line booms often need to extend the boom longer when operating in ports, docks, warehouses and other special working conditions, or repeatedly adjust the working position to meet the needs of the work and reduce the work efficiency

3. The oil-air suspension system or the suspension system with the leaf spring and the locking hydraulic cylinder need to increase the control pipeline and the corresponding valve group separately, which increases the complexity of the control. It is difficult to realize that the hydraulic cylinder is affected by the stiffness of each leaf spring when it is locked The locking is balanced, and the stability of the vehicle is poor when driving with a load

4. "H"-shaped telescopic outriggers have poor working conditions for small construction sites such as ports, docks, and warehouses.

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