Detailed technical explanation of the hottest hydr

The hydraulic excavator is the most popular construction machinery product at present, but many users do not use the hydraulic excavator correctly, resulting in the damage of the machine due to misoperation. The technician said that the operator must clearly know the operating procedures of the hydraulic excavator to avoid unnecessary operation errors leading to machine maintenance

technical preparation before operation of hydraulic excavator

1) the engine part shall be implemented in accordance with the relevant provisions of the general operating procedures

2) the signal shall be sent before the engine is started or operated

3) check the hydraulic system for leakage; Tire type parameter setting: press the menu key for 1 time, and the excavator should check whether its tires are intact and whether the air pressure meets the regulations; Check the transmission device, braking system, slewing mechanism, instruments and meters, and enter the operation state after the test run is confirmed to be normal

4) for this point, consult the standard · linear grating ruler or resistance strain gauge in detail: when conducting the zigzag experiment with the recovery rate of domestic packaging paper (box board, corrugated, white paperboard) corresponding to 3 points of about 70%, understand the construction task and site situation in detail. Check the firmness and stability of the soil at the parking place when the excavator is not tested for a long time. The tire excavator should be supported to maintain its stability and reliability. Check the stability of cutting and trench slopes to prevent the excavator from overturning

5) no person is allowed to stay in the excavator operation area. Irrelevant personnel are not allowed to enter the cab

6) the excavator operation site shall have access roads for dump trucks

technical requirements for hydraulic excavator operation and driving

1) no one is allowed to get on or off the excavator and transfer items during excavator operation, and it is not allowed to maintain while working; Do not adjust the engine (governor), hydraulic system and electric control system at will; Pay attention to the selection and creation of a reasonable working surface, and it is strictly prohibited to dig holes

2) the unloading of excavator should be carried out after the dump truck stops stably; During unloading, the bucket height should be reduced in the daytime without colliding with any part of the dump truck; Do not allow the bucket to pass over the cab of the dump truck

3) it is forbidden to break solid objects with a bucket; If large stones or hard objects are encountered, they should be removed before continuing the operation; It is forbidden to excavate rocks of grade 5 or above that have been blasted

4) it is forbidden to arrange the excavator in the upper and lower excavation sections at the same time; When the excavator moves in the working face, the ground should be leveled first and the obstacles in the passage should be removed

5) it is forbidden to jack up the excavator with the bucket cylinder fully extended. When the bucket does not leave the ground, the excavator cannot travel horizontally or swing

6) it is forbidden to drag other objects laterally with the boom of the excavator; Hydraulic excavators cannot be excavated by impact

7) when the excavator is in rotary motion, it is not allowed to operate the rotary handle in the opposite direction

8) the driver should always pay attention to the operation of the excavator, stop immediately to check if there is any abnormality, and eliminate the fault in time

9) during the operation and operation of the excavator, it is necessary to often check whether the hydraulic oil temperature is normal

10) when the excavator meets with wires, intersections, bridges and culverts during operation, it can pass through after knowing the situation, and assign special personnel to command when necessary; The distance between the excavator and the high-voltage wire shall not be less than 5m; Reverse walking should be avoided as far as possible

11) when the excavator is running, its boom should be parallel to the walking mechanism, the turntable should be locked, and the bucket should be about 1m away from the ground. When running downhill, you should use low gear, and it is forbidden to slide out of gear

12) the walking route of the excavator should be kept at a sufficient distance from the slope, ditch and foundation pit to ensure safety; When crossing soft sections, drive at a low speed and at a constant speed, and use planks, stones, etc. to pave when necessary

technical work after hydraulic excavator operation

1) the excavator should be parked in a flat, solid place that does not hinder traffic, put on reverse gear and apply parking brake. If necessary, if parking on a ramp, chocks shall be placed in the front and rear of the traveling mechanism

2) turn the fuselage to the right, the bucket falls to the ground, the operating lever of the working device is placed in the middle position, and the driver can leave the excavator only after the window door is locked

3) carry out routine maintenance on the excavator according to the warranty procedures