Daily maintenance methods of truck cranes

Routine maintenance of truck cranes is the core to ensure that the truck crane can work normally for a long time. Only by doing routine maintenance of your truck crane can your truck crane work more safely and efficiently. Today I will bring you the daily maintenance methods of truck cranes.

Regarding the maintenance methods of truck cranes, first of all, we should follow the product maintenance instructions provided by the truck crane manufacturer. Before operating the machine, we must read the crane’s use and maintenance instructions and operate according to the instructions. With the increase of service life, mileage and changes in the working environment, the vehicle’s fasteners will become loose, and the assembly gaps between various accessories will increase due to wear and tear. If not replaced in time, normal operation and service life will be affected, and even serious accidents may occur. When a truck crane is in high-intensity and dangerous operations for a long time, it is more important to pay attention to the normal maintenance of the vehicle to avoid accidents.

1. Check whether the chassis power take-off is working normally, whether the fixing bolts of the transmission shaft are loose, whether the work is balanced, and whether there is any abnormal noise or oil leakage from the hydraulic oil pump.

2. The structural parts are the skeleton support of the truck crane. It is a very important inspection item to remove dust, clean and maintain its surface, and show a beautiful and sturdy appearance. When wiping, you can observe whether the appearance of each part is deformed, worn, and whether the weld bead is cracked. If problems are found, repairs can be reported in time to minimize the risk of accidents; the connection of structural components depends on several key hinge points, and their lubrication is crucial to the flexible operation of all structural components to prevent jamming and subsequent hinges. Points play a vital role in disassembly and assembly.

3. The telescopic arm is driven by an oil cylinder or several sets of cables to realize the forward and backward movement of the telescopic arm. Check whether the cable is loose without tension and adjust the preload.

4. Inspection and maintenance of the slewing gear, slewing gear reducer and slewing bearing, as well as the teeth between the slewing gear and the slewing gear reducer also need to be inspected and cleaned of debris, and lubricated oil is applied for daily maintenance.

5. The lifting reducer is the main component of the crane used to lift heavy objects. Check whether the connection between the motor balance valve and the control oil pipe is loose or leaking oil. Observe whether there is any oil stain on the appearance of the reducer to determine whether the internal seal of the housing has failed and whether it cannot achieve the sealing function. At the same time, daily inspections of lifting wire ropes should also be carried out. When the outer wire of the wire rope is worn to 40% of its diameter, or when the diameter of the wire rope is reduced by 7% or more relative to the nominal diameter, the wire rope should be scrapped; the wire rope should also be scrapped if it has broken wires or strands.

6. Hydraulic oil should be observed every day. It is like the blood in people’s veins. Hydraulic oil is the blood of construction machinery. Their quantity and cleanliness are directly related to the reliability of the entire mechanical action. According to the important part of the command operation, the causes and hazards of hydraulic oil deterioration: the color turns white and emulsifies, and the hydraulic cylinder becomes weak.

7. The hydraulic cylinder is an important component that enables interconnected structural components to produce a certain range of motion. Check whether there is oil stains and scratches on the surface of the cylinder piston rod; the valve lock mounting surface of the cylinder is connected to the hard pipe; whether there is oil stains on the guide sleeve; if the cylinder stops working in a semi-mobile mode, you can judge the cylinder by whether it automatically recovers or extends. whether it is working properly. In addition, you can use butter to protect the leaking part of the cylinder rod.

8. During the running-in period, pay attention to the working load of the truck crane. The working load during the trial operation shall not exceed 80% of the rated working load, and an appropriate working load shall be arranged for the truck crane to prevent the machine from overheating during long-term continuous operation.

9. Observe the instrument indications frequently. If abnormal conditions are found, the operation should be stopped in time to eliminate the fault. Operation should be stopped until the cause of the fault is discovered and rectified.

10. After the running-in period of the truck crane, the entire vehicle should be compulsorily maintained, the truck crane should be properly inspected and adjusted, and the engine oil should be replaced.

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