Routine maintenance and adjustment method of crawler crane torque limiter.Thailand Excavator sprocket
The basic requirements of the moment limiter are as follows: reliable operation, easy to check and calibrate; it can provide the operator with information about the length of the boom, the angle of the boom, the lifting height, the working range, the rated load and the actual lifting load; when the actual lifting mass When it exceeds 95% of the rated value of the lifting mass corresponding to the actual amplitude, the torque limiter shall send an alarm signal; when the actual lifting mass is greater than the rated value corresponding to the actual amplitude but less than 110% of the rated value, the torque limiter shall automatically Cut off the power source in the unsafe direction (rising, increasing the amplitude, extending the boom or a combination of these actions), but allow the mechanism to move in a safe direction; the storage device can automatically record the dangerous conditions during operation and the operation during use. Overload records provide a basis for accident analysis and processing.Thailand Excavator sprocket
The following is a brief introduction to the daily maintenance and adjustment methods of the crawler crane torque limiter:
When the displayed boom length is inaccurate (beyond the specified error range), the boom length sensor should be adjusted. The specific methods are as follows: first retract the boom to the basic arm, check the prestress of the cable reel (the cable must be tightened); then open the upper cover of the length/angle sensor, carefully turn the length potentiometer center shaft with a flat-blade screwdriver, Until the arm length value displayed on the display matches the actual length of the boom.Thailand Excavator sprocket
The angle sensor and the length sensor are installed in the same housing. When adjusting, first retract the boom to the base arm, and the length display must be equal to the actual arm length. At this time, use the inclinometer to measure whether the actual angle of the main arm at 10 and 70 is consistent with the value displayed on the display (or use a tape measure) measure the working range). If the angle value or amplitude value displayed on the display does not match the actual value, the angle sensor must be adjusted. The method is as follows: Loosen the mounting bolts of the length/angle sensor, slightly rotate the housing where the length/angle sensor is located until the angle or amplitude value indicated by the display matches the actual measured value, and then tighten the mounting bolts.Thailand Excavator sprocket
Post time: Aug-12-2022
