Excavator work in harsh environments, the use and maintenance of chassis parts is crucial, we share the use and maintenance of chassis parts from the following components based on many years of experience in excavator in excavator service:
1. The use of chassis parts tips.
The use of chassis parts tips.
1. Crawler Chain Track Joints
The excavator walks on tracks, and the traction force of the horsepower is large when walking. Since each section of the track chain rail joint has a certain length, and the driving wheels are toothed shapes, there will be a polygonal effect when walking(when the whole track plate is parallel to the ground, the driving radius is small, and when the side of the track plate is in contact with the ground, the driving radius is large, resulting in inconsistent speed of the excavator’s walking speed),and thus vibration will be generated. When the operation is not proper, the road surface is uneven, the tensioning force changes, the track chain rail joints have more dirt, and and gravel and other chain foreign objects when walking will cause the resonance of the track chain rail joints, resulting in the track chain rail joints have jumping phenomenon, accompanied by the sound, and will result in the derailment of the track.
2. Supporting wheel ,track and guard plate, driving wheel, carrier wheel
The material of excavator supporting wheel, track and guard, driving wheel, bracket chain wheel is alloy steel added wear-resistant material burned and calcined casting, although there is a heat-treated protective film on the metal surface, but if the operation is not appropriate, track tensioning force is not appropriate, track tensioning force is not appropriate of there are foreign object present, any metal protective film will wear off, and ultimately accelerate the wear and tear of supporting wheel, track and guard, driving wheel, bracket chain wheel.
3. Floating oil seals
Excavator walking motor and reducer, supporting wheel, bracket chain wheel internal need gear oil for lubrication, walking motor and on the reducer, supporting wheel, bracket chain wheel floating oil seal is a kind of non-contact sealing, the role is to prevent oil leakage, the normal situation will not leak oil. But when the outside world has dirt, sand ad gravel and other foreign matter accumulated too much will enter the oil seal inside the oil seal damage, resulting in oil leakage: excavator walking for a long time will lead to oil temperature rise, floating oil seal aging, and ultimately oil leakage phenomenon.
4. Guide wheel and tensioning cylinder！
Excavator guide wheel and tensioning cylinder assembly is a device to maintenance the standard tension of the track, the tension varies with the working conditions and the chassis foreign objects, in order to maintenance the standard tension, it is necessary to check and adjust regularly. When the surface of guide wheel and tension cylinder has oil, sand, dirt and other foreign matter, it needs to be cleaned in time. Otherwise, it will cause oil seal failure and oil leakage.
2. Chassis maintenance knowledge
1. Before the end of each day’s work, unilateral support excavator tracks off the ground 30cm, high-speed walking repeatedly running back and forth to support the measurement of the tracks, through the vibration of the foreign body to loosen or fall off
2. Regularly check the chassis parts, when the chassis parts have too much foreign matter, abnormal operation or clean up after every 250h to prolong the service life of the chassis parts.
3. Wear goggles and helmet when cleaning foreign matter, and keep a safe distance to prevent injuries caused by gravel and sand splashing.
3. Chassis parts use reminders
1. Avoid sharp turns, turning, and high speed walking on rugged roads.
2. Avoid driving the excavator for a long time.
3. Check the undercarriage parts for abnormalities before work every day, and deal with any abnormalities in a timely manner.
4. Check the track tensioning force before each day’s work and adjust it to the require standard according to the Driver’s Manual.
5. Clean the foreign matter on the undercarriage parts after work every day to prevent excessive wear and oil leakage of the undercarriage parts.
Post time: Jun-06-2024