输送带双向弧形断带抓捕器的设计与研究

为实现输送机断带时不同运动方向断带的抓捕,提出双向弧形断带抓捕器结构方案,并以GX1000型输送带为应用算例设计抓捕器主要参数,对双向弧形抓捕器的抓捕过程进行虚拟样机仿真,获得主要部件速度特性,加工制作抓捕器1:2模型样机,对其进行抓捕过程及抓捕力测试试验,基于小模型相似理论,推导抓捕器原型机抓捕力参数。结果表明:针对不同运动方向的断带,双向弧形断带抓捕器的虚拟样机和实验室条件下模型样机可进行不同转向的抓捕动作,形成可靠楔形空间抓捕制动,实现了单机的可双向抓捕,抓捕器原型机极限抓捕力P_p>56.4 kN,极限抓捕力P_p大于理论所需抓捕力F′_zc(F′_zc=23.15 kN),满足安全抓捕制动要求。

DESIGN AND RESEARCH OF THE BROKEN BELT PROTECTOR WITH BIDIRECTIONAL AND ARC SHAPED CATCHING SCHEME FOR CONVEYER BELT

In order to realize the protection of broken conveyer belt with different moving direction,the scheme of broken belt protector with bidirectional and arc shaped catching scheme was proposed,and the main parameters were designed taking the GX1000 type conveyer belt as application example.The virtual prototype simulation of the broken belt protector catching process was done,and the velocity characteristic of main components was obtained.The model prototype with 1/2 structure size of the prototype machine was manufactured,and the test of catching process and the catching force were carried out.And the catching force parameters of prototype machine were derived based on small-scale model similarity theory.Consequently,the virtual and model prototype of broken conveyer belt protector with bidirectional and arc shaped catching scheme can carry out catching motion by different directions acorrding to the direction of broken belt motion,and wedge-shaped space for catching is formed and catching brake is finished.The broken belt protector single machine can realizes bidirectional catching.The limit catching force of prototype machine is higher than 56.4 kN,and the limit catching force is higher than theoretical cutting force which is 23.15 kN,and the demand of catching brake safely is met.