Hoist crane mechanism is unique is the use of a three-drive unit, three drive means is to drive the motor, brake and transmission brake device as one of the three gear (almost without coupling) of a compact and lightweight drive.
2013年12月20日星期五
Crane (car) of the wheel rim contact with the side of the track
Crane (car) of the wheel rim contact with the side of the track, friction and wear in the running process of a kind of phenomenon. Wheel steel crane and the theory of unilateral clearance on the side of the track can generally be classified as 5 ~ 15 mm, as long as crane (car) in the process of running wheels horizontal offset is greater than this value, gnaw rail occurs, it is gnaw rail boundary conditions. Gnaw rail serious when although crane can not continue to use, but flange and rail friction will increase, will affect the service life of some components, to use causes pecuniary loss to unit. For sino hoist span bridge crane, due to factors such as manufacturing, car easy to gnaw rail accidents. Based on this, this paper analyzes the reasons of large span thin sorghum gnaw rail, put forward the corresponding countermeasures and improvement methods is very necessary. Bridge crane gnaw rail car cause analysis for large size hook bridge crane, in the use of more than a year later, often find crane gnaw rail car phenomenon, and all is the car outside rim gnaw rail to readjust the car wheel after the parallelism and perpendicularity to conform to the requirements, still did not solve the problem.
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