Crawler hydraulic excavator is an earthmoving machine that uses a bucket to dig the material above or below the bearing surface and load it into a transport vehicle or unload it to a storage yard. The materials excavated are mainly soil, coal, sand, and soil and rock after pre-loosening. From the perspective of the development of construction machinery, the development of ten Tian excavator is relatively fast, and energy-saving excavator as one of the most important construction machinery models in engineering construction, its correct selection is more important. Widely used in mining and urban and rural construction of special machinery and equipment, advanced performance, unique technology.
1. Rotating mechanism inspection provisions:
Rotary drive device should work smoothly, should not overheat;
The rotating platform should rotate smoothly, without blocking and impact, and the rotating gear should be meshed and lubricated well.
Gear oil level of rotary reduction device should reach the oil level mark height.
2. There should be no abnormal noise, overheating and leakage when the walking drive motor and the rotary drive motor work.
3. The operating speed of the working device should be normal, and the sinking amount of the piston rod of the working device hydraulic cylinder should not be greater than 100mm/h.
4. The control valve should be able to effectively control the left and right rotation of the rotating platform, the extension and retraction of the bucket rod, the rise and fall of the boom and other actions.
5. Inspection regulations for large excavator working devices:
Boom, bucket rod, bucket should not be deformed, cracked, open welding;
Bucket teeth should be complete, complete, should not be loose;
The connecting shaft pins of the boom, bucket rod and bucket should be well lubricated, and the shaft pins should be fixed firmly.
6. Brake and safety device inspection provisions:
When the walking pedal is in the free state and the walking lever is in the neutral position, the walking brake should be automatically in the braking state.
After releasing the control lever of the multi-channel reversing valve, the control lever should automatically change its position, and the working function of the excavator should be stopped; The pilot control switch rod should work reliably and effectively.