Breakdown prevention and treatment of small crane brake,Analysis of small crane brake fault prevention and fault handling, safety brake is important components of the crane, with stop suspension, parking and other objects fall, only good brakes are guarantee of crane running accuracy and safety production ability, the crane brake will appear the lack of braking force, brake suddenly failure, small crane wheel brake high temperature and smoke, brake pad brake arm is not open and mechanical failure.

The causes of these mechanical failures are analysed as follows:
A. brake band brake wheel or excessive wear; brake with small local shedding; the main spring adjustment too loose; the brake band and the brake wheel with grease; hinge outside the card place or excessive wear parts; small crane locking nut loosening the whole rod loose; hydraulic push rod brake the impeller rotation is not flexible;
B. brake pads are heavy or loose, or long running magnets are stuck, the main spring fails, or the main parts of the brakes are damaged;
C. the gap between the brake and gasket is too large or too small;
D. small crane stuck place or hinge with adjustable brake torque is too large, or loose brake cylinder hydraulic push rod in oil and mixed with air or hydraulic push rod brake used oil does not meet the requirements, or the brake pad and the brake wheel dirt.
Preventive measures regularly check the small crane brake and maintain the small crane. The brake of the lifting mechanism must be operated once every class, and the brake of the running mechanism
Once a day, check the following:
There is no delay and wear A. hinge, the fastening place has no slack;
Is the movement of the moving parts of the B. small crane normal?;
C. is the hydraulic system normal?;
Is the wear between the D. brake wheel and brake belt normal and clean?. According to the inspection to determine whether the small crane brake is normal, and resolutely put an end to running in spite of illness, while the brakes should be regularly lubricated and maintained.
In order to ensure the safe operation of the crane, the brake must be adjusted frequently, so as to ensure the work requirements of the corresponding mechanism. The small crane brake temperature is too high and the brake belt is smoked. This assumes that the installation is not working properly. Sometimes indeed brake off, but there is one does not have to brake band brake wheel, small crane task rub, the short-term temperature of the brake wheel up to 300~400 Deg. C, brake with smoke, should be timely intervention of the brake of the brake wheel brake frame is parallel to the surface. The small crane hoisting mechanism energy moment decreases gradually, this is because the brake belt wear, the main spring gradually intensify or brake frame joints hole or shaft wear too much wait for a reason to form, assuming brake band wear to half of the original thickness is changed. Wear small lifting axle more than 5% of the original diameter of more than 1 mm, ellipticity to change orifice wear more than the original aperture 5%, available from the new preparation of reamer reaming, and the corresponding pin shaft.