Tips for using excavators in various operations
Tips for using excavators in various operations
1、Excavator operation techniques:
First of all, confirm the surrounding conditions. Rotary operation, the surrounding obstacles, terrain to do a good job, safe operation; operation, to confirm the front and rear direction of the crawler, to avoid causing tipping or impact; try not to put the final drive face digging direction, otherwise it is easy to damage the walking motor or hose; operation, to ensure that the left and right crawler and the ground completely contact, to improve the dynamic stability of the whole machine.
2、Effective digging method:
When the bucket cylinder and connecting rod, bucket rod cylinder and bucket rod are 90 degrees to each other, the digging force is large; when the bucket teeth and the ground maintain an angle of 30 degrees, the digging force that is small cutting resistance; when digging with bucket rod, you should ensure that the bucket rod angle range is between 45 degrees from the front to 30 degrees behind. Use the moving arm and bucket at the same time, can improve the digging efficiency.
Use bucket to dig rocks will cause big damage to the machine, should be avoided; when digging, should adjust the position of the body according to the direction of the crack of the rock, so that the bucket can be shoveled smoothly into the excavation; insert the bucket teeth into the crack of the rock, dig with the digging force of the bucket rod and bucket (should pay attention to the slippage of the bucket teeth); unbroken rocks, should be broken first and then use the bucket to dig.
4、Slope leveling operation:
The machine should be placed flat on the ground to prevent the machine body from shaking, to grasp the coordination of the action of the moving arm and bucket bar, and to control the speed of both is essential for the plane trimming.
The body should be in a horizontal and stable position, otherwise it is difficult to accurately control the rotary unloading, thus extending the operating cycle time; the body and the truck to maintain an appropriate distance to prevent the tail of the body and the truck when doing a 180-degree rotation; try to carry out the left rotary loading, so as to do a wide field of view, high operational efficiency, while correctly grasp the angle of rotation to reduce the time used for slewing; truck position forest than the excavator low, to shorten the dynamic arm lifting time, and good line of sight; first loaded sand, gravel, and then placed large stones, which can reduce the impact on the trunk.
6, soft ground or water operations:
When operating in soft land, should understand the degree of soil looseness, and pay attention to limit the excavation range of the bucket to prevent accidents such as landslides, cave-ins and deeper sinking of the car body.
In the water operation, should pay attention to the car body allowable water depth range (water surface should be below the center of the sprocket wheel); if the level is high, the internal slewing bearing will lead to poor lubrication due to the entry of water, the engine fan blades by the water hit lead to breakage, electrical wiring components due to water intrusion short circuit or broken circuit.
Role of hydraulic excavator for lifting operation into, should confirm the lifting site around the situation, the use of high-strength hook and wire rope, lifting should try to use special lifting device; operation mode should choose micro-operation mode, the action should be slow and balanced; rope length appropriate, too long will make the lifting swing larger and difficult to accurately control; to correctly adjust the bucket position, to prevent the steel wire rope slip; construction personnel try not to close to the lifting object, in order to prevent the occurrence of danger due to improper operation.
8、Smooth operation method:
Operation, the stability of the machine can not only improve efficiency, extend the life of the machine, and can ensure operational safety (put the machine on a flatter ground); drive sprocket in the back side than in the front side of the stability is good, and can prevent the final drive from external impact; track on the ground axis distance is always greater than the wheelbase, so work towards the front of good stability, to try to avoid lateral operation; to keep the digging point close to the machine If the digging point is far away from the machine, the operation will be unstable because of the forward shift of the center of gravity; lateral digging is less stable than forward digging, and if the digging point is far away from the center of the body, the machine will be more unstable, so the digging point and the center of the body should maintain a suitable distance to make the operation balanced and efficient.