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目前国内外生产的全液压汽车起重机均配有力矩限制控制器但控制器,在使用中容易损坏；一旦发生故障修复难度大且费用高。为此,笔者研制了一种新型力矩限制控制器,该装置具有性能稳定、成本低、适用性强等特点。1．力矩控制系统工作原理和组成(1)原理起重机实际倾覆力M_(实际)矩是其工作状态(吊臂长度L、仰角θ及吊臂方位角α)及起吊载荷W的函数,即M_(实际)=F(L,θ,α,W),而其允许倾覆力矩M_(允许)则是由工作状态决定的另一个函数,即M_(允计)=F (L,θ,α)。
At present, domestic and foreign production of full hydraulic truck crane is equipped with a torque limit controller but the controller, easy to damage in use; once the fault repair is difficult and costly. To this end, I developed a new torque limit controller, the device has the characteristics of stable performance, low cost, applicability and so on. 1. The working principle and composition of the torque control system (1) Principle The actual tilting force M_ (actual) moment of the crane is a function of its working state (boom length L, elevation angle θ and boom azimuth α) and lifting load W, that is M_ ) = F (L, θ, α, W), and its allowable overturning moment M_ (allowance) is another function determined by the working state, that is, M_ (allowance) = F (L, θ, α).