1. Trenching operation.

Ride on the two tracks of the excavator in the middle of the ditch and walk backwards. The upper and lower arms should be extended to appropriate positions, and the back of the bucket should be buried at an angle of 30 with the ground. According to the tightness of the soil, the speed of extending the forearm is determined, and then the composite barrel is rolled according to the amount of soil in the barrel, and then the material is rotated.

2. Level the site.

First, spread most of the soil evenly with buckets and hook it with bucket teeth. Then put the bucket back in the bucket.

Parallel to the ground, keep the ground almost in contact with the back of the bucket, stretch the forearm, unfold the bucket, and continuously lift the boom. At the same time, use rotation to sweep away excess soil and walk backwards.

3, excavator lifting operation.

When lifting the hydraulic excavator, confirm the surrounding conditions of the lifting site, use high-strength hooks and wire ropes, and use special lifting devices as much as possible; The operation mode should be micro-operation mode, and the action should be slow and balanced; If the length of lifting rope is appropriate, too long will make the hanging object swing greatly, which is difficult to control accurately; Correctly adjust the position of the bucket to prevent the wire rope from slipping; Construction personnel should try not to get close to the hoisted object, so as to avoid danger caused by improper operation of solid objects.

4, excavator walking.

When operating the excavator correctly, the working device should be put away as far as possible and close to the center of the machine body to maintain stability; Put the final drive in the back to protect the final drive.

5, excavator crushing operation.

The correct crushing operation should first put the hammer vertically on the object to be crushed. When starting the crushing operation, lift the front car body by about 5 cm. When crushing, the crushing head should always be pressed on the broken objects, and the crushing operation should be stopped immediately after the broken objects are broken.

6. Excavators work in soft places.

Key points of excavator use: when working in soft areas or in water, you should know the degree of soil looseness, and pay attention to limit the digging range of bucket to prevent accidents such as soil slippage, landslide and deep sinking of car body. When the crawler excavator is deeply immersed in mud, put a board under the bucket, support the crawler with the bottom of the bucket, and then put a board under the crawler to drive the machine out.

7. Excavator masonry.

Using a bucket to dig rocks will cause great damage to the machine and should be avoided as far as possible; When excavation is needed, the position of the machine body should be adjusted according to the crack direction of the rock, so that the bucket can be shoveled out smoothly for excavation; Insert the bucket teeth into the cracks in the rock, and use the digging force of the bucket arm and bucket to dig (pay attention to the sliding of the bucket teeth); Unbroken rocks should be broken before digging with a bucket.

8. Keep the margin of the traveling end of the excavator.

It is worth noting that there is a buffer device inside the working hydraulic cylinder, which can gradually release the back pressure near the end of the stroke; If the piston is subjected to impact load after reaching the end of the stroke, it will directly hit the cylinder head or cylinder bottom, which is likely to cause accidents, so try to leave a gap when reaching the end of the stroke.

9. Dumping and loading operations.

The loading machine body should be in a horizontal and stable position, otherwise it is difficult to accurately control the rotary unloading, thus prolonging the operation cycle time; The fuselage is slightly higher than the truck, and a proper distance should be kept to prevent the tail of the fuselage from colliding with the truck when it rotates at 180 degrees; As far as possible, rotate the left side of the installation to broaden the field of vision and improve the operation efficiency, and at the same time correctly grasp the rotation angle and reduce the rotation time; The position of the truck is slightly lower than that of the excavator to shorten the lifting time of the boom and have a good line of sight; Loading sand and gravel first, and then enlarging the stone can reduce the impact on the trunk.