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Fault prevention and handling failure analysis of brake for truck mounted crane

Update Date: 2015/12/9 comes from: jyrcpr.cn Author: clicks:

??? Xugong truck crane Brake fault prevention and handling fault analysis, brake is an important safety component of truck mounted crane, which has the function of preventing the falling of suspended objects and parking. Only a good brake can guarantee the accuracy and safety of the truck mounted crane. In the operation of the truck, the brake will have insufficient brake power and the brake suddenly fails. Mechanical failure such as smoking with brake shim and not opening the brake arm. The reasons for these mechanical failures are as follows:

A. brake belt or brake wheel wear is too large; brake with a small piece of local shedding; the main spring is too loose; there is grease stain between the brake belt and the brake wheel; there are stuck parts or excessive wear parts outside the movable hinge; loose lock nuts of the small truck crane loosens the whole pull rod; and the impeller of the hydraulic push rod loosening is not flexible.

The B. brake pad is serious or large falling off, or the long stroke electromagnet is jammed, the main spring fails, or the main parts of the brake are damaged.

The clearance between the C. brake and the gasket is too large or too small.

The hinge of D. small car hoist is stuck or the braking torque is too high, or the oil in the hydraulic cylinder of the hydraulic push rod loosening cylinder and mixed with air, or the grease used by the hydraulic push rod sluice does not meet the requirements, or there is dirt between the brake disc and the brake wheel.

Preventive measures are regularly inspected and maintained for small truck mounted brakes. The brake of lifting mechanisms must be run once a time, and the brakes of the operating agencies must be checked once a day.

Whether the A. hinge is stuck or worn and whether the fastening points are loose or not.

B. is the movement of the moving parts of the vehicle mounted crane normal?

C. is the hydraulic system normal?

Is the wear between the D. brake wheel and the brake belt normal and clean? According to the inspection conditions, determine whether the brake is normal or not, and resolutely put an end to the operation of the disease. Meanwhile, the brake should be lubricated and maintained regularly.

In order to ensure Xugong truck crane For safe operation, brakes must be adjusted frequently. Xugong truck crane So as to ensure the corresponding organization's work requirements. Xugong truck crane The brake temperature is too high and the brake belt is fuming. This assumption is due to improper installation and coordination. Sometimes the brakes are closed, but one brake belt does not come to the brake wheel. When the car is running, the temperature of the brake wheel rises to 300~400 degrees and the brake belt smokes. The brake pad should be adjusted in real time to make the braking surface of the brake wheel parallel. The energy moment of the truck mounted crane is gradually reduced, because the wear of the brake belt, the gradual tightening of the main spring or the excessive wear of the hole or shaft of each hinge point of the brake rack, and the assumption that the brake belt is worn to half of the original thickness will be changed. The wear of the suspension shaft is more than 5% of the original diameter, and when the ellipticity is more than 1, the wear of the hole exceeds 5% of the original diameter. The reamer can be reamed and used to prepare the corresponding pin.

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