When installing the crane equipment, ensure that the oil make-up valve is horizontal and pay attention to the direction. Port B of the oil makeup valve needs to be connected with the hydraulic motor, otherwise, not only does it have no oil makeup effect, but all the pressure oil supplied to the hydraulic motor will flow back to the oil tank through the valve, so that the weight will not drop.

The size and nature of large crane load has an important impact on the mechanical loss process. Generally speaking, the wear of parts increases proportionally with the increase of load. When the load of the part is higher than the average design load, the wear will increase. In addition, under the same other conditions, the wear under stable load is smaller than that under dynamic load, with fewer failures and short service life.

The test shows that the cylinder wear of the engine under unstable load is twice that under stable load. The engine works under normal load with low failure rate and long service life. On the contrary, when the engine is overloaded, the failure rate will increase significantly, and the service life will be shorter than the design index. The amount of mechanical wear that is often in a wide range of load changes is greater than that of continuous and stable working machinery. In general, the engine used by the generator has a longer service life than the engine used by cranes, small cranes, etc.

The guarantee of normal working load mainly depends on the use of construction machinery by operators. First of all, be careful not to work under the heavy load of a crane that exceeds the capacity of the machine, and use the machine within the capacity of the machine. As the management personnel of construction machinery, when assigning the operators, they should hand over the random construction machinery data and operation manual to the operators so that they can master the mechanical properties and operating procedures normally, and should not arbitrarily withhold the relevant data.

Secondly, it is necessary to ensure the uniform increase and decrease of mechanical load, so that the machinery is in a relatively gentle load change. Specifically, the throttle must be increased and decreased evenly to prevent the engine and working device from moving up and down. Measures to prevent overload of crane wire rope: install load indicator, overload limiter or alarm on the crane to eliminate overload. Strictly abide by the safety operation rules and put an end to artificial overload. In order to prevent the wire rope from overloading, Crane rental company The following measures are recommended!

1. The safety factor shall be correctly selected to minimize the impact of other loads other than static load on the wire rope. For example, bending load can be reduced by increasing pulley and drum diameter, dynamic load can be reduced by improving crane driver's operation level and crane performance, friction resistance can be reduced by adjusting pulley groove shape and supplementing lubricating oil, etc.

2. Strictly abide by the safety operation rules and put an end to artificial overload.

3. Install load indicator, overload limiter or alarm on the crane to eliminate overload.