이 웹사이트는 귀하에게 가능한 최고의 사용자 경험을 제공하기 위해 쿠키를 사용합니다. 쿠키 정보는 귀하의 브라우저에 저장되며 귀하가 당사 웹사이트로 돌아올 때 귀하를 인식하고 당사 팀이 귀하가 가장 흥미롭고 유용하다고 생각하는 웹사이트 섹션을 이해하는 데 도움을 주는 등의 기능을 수행합니다.
industrial electric overhead travelling crane is horizontal frame in the workshop, warehouse and open storage yard above, used to lift all kinds of objects of mechanical equipment usually called “crane” or “traveling crane It is a mechanical equipment usually called “crane” or “traveling crane”. It is the machinery industry, metallurgical industry and chemical industry, the most widely used a lifting machinery with the use of enterprises more and more often, in the normal use of maintenance, top running overhead crane will often appear gnawing rail phenomenon. Next we will analyze this phenomenon.
Gnawing rail definition: gnawing rail refers to the crane trolley or trolley running process, the trolley or trolley wheel rim and track side should maintain a certain clearance, but due to the wheel rim and track side contact to produce horizontal lateral thrust, caused by the wheel rim and the track of the friction and wear and tear, usually referred to as gnawing rail.
What are the hazards of ceiling mounted bridge crane?
Heavy duty overhead traveling crane gnawing rail judgment and performance:
What are the reasons for 탑 러닝 오버헤드 크레인 gnawing rail analysis?
Crane gnawing causes many reasons, but the main reason for these two aspects: one is the track deformation; the second is the crane industry manufacturing technology defects and the installer’s ability to install and lack of technology.
Caused by track deformation of the reasons are as follows:
The installation quality of the wheels and the quality of the wheels themselves is also an important reason for the phenomenon of chewing the rails:
Gnawing rail solution-correction track
The new track is installed, must be strictly adjusted before delivery. In the adjustment should be prepared before the corresponding tools, such as: steel tape measure, level meter, tensioner and fine steel wire and so on. Use the steel tape measure to measure the gauge between the two rails, and use the level meter to measure whether the horizontal height of the two rails is the same. Use the tensioner and fine steel wire to adjust the horizontal straightness of the rail. When installing wheels, the horizontal deviation should be controlled at △ ≤ L/1000 (L is the length of the wheel measuring diameter on the parallel datum line), and the vertical deviation should be controlled at △ ≤ H/1000 (H is the length of the wheel measuring height in the vertical direction).
Adjustment of the old track, its methods and requirements are roughly the same as correcting the new track, but before adjusting the old track, it should be inspected in detail, the inspection contents are:
①Check whether there is any crack or breakage of the track.
② Check whether all the bolts and nuts are loose or damaged.
③Check whether there is any damage to the pressure plate and gasket of all tracks.
④When calibrating the whole track, use the appropriate tools and accurate methods to measure the gauge, level and horizontal straightness error of the two rails and record it.
Solve the gnawing rail by adjusting the wheels: Replace the worn wheels in pairs, the influence of the wheels on the operation due to the diameter difference can be eliminated, and the installation accuracy of the wheel set can be adjusted. Reduce the manufacturing error of the wheel set itself.
Inspection and calibration of transmission mechanism
① By carefully checking the transmission mechanism, if it is found that the transmission mechanism has a large gap, the coupling and gearbox must be overhauled or replaced.
② The first big car active wheel adjustment installed, and then based on this, in turn, the overall coupling, reducer and big car walking motor between the horizontal axis of the calibration, in order to avoid shifting, should be used to locate the block welded reducer.
③ Detect and adjust the motor speed on the transmission mechanism, if the motor speed on both sides is still inconsistent, it is recommended to replace the motor with the same model from the same manufacturer.
④ Adjust the brakes at both ends in a coordinated manner, i.e., the brakes at both ends are fully open without additional frictional resistance during operation, which can prevent the phenomenon of unequal braking torque and crane gnawing on the rail when braking.