The maintenance of excavator chassis components is crucial, and the following are the maintenance methods for each chassis component:
Track shoes
Regular inspection: Before and after each use of the excavator, the track shoes should be checked for cracks, deformation, excessive wear, and other conditions. Special attention should be paid to the connection parts of the track shoes to ensure that the connecting bolts are tightened and not loose.
Timely cleaning: During the construction process, the track shoes are prone to carrying dirt, stones, and other debris. They should be cleaned up in a timely manner to prevent these debris from accelerating the wear of the track shoes and also to avoid damage to other components of the walking system.
Correct operation: When driving an excavator, operators should avoid rough operations such as sudden acceleration, sudden braking, and sudden turning, reduce the impact and friction force on the track shoes, and extend their service life.
Reasonable selection of construction site: Try to avoid working on sites that are too rough and have many sharp objects. If construction must be carried out on such sites, the site should be cleaned and leveled in advance to reduce the contact between track shoes and sharp objects and reduce the risk of damage.
Supporting wheel
Maintain cleanliness: Regularly clean the supporting wheel and its surrounding soil and debris to prevent them from entering the interior of the wheel body, affecting the normal rotation of the wheel body and lubrication of the shaft sleeve.
Check lubrication condition: Regularly check the grease filling of the supporting wheel to ensure that there is sufficient grease in the shaft sleeve area. Generally, lubricating grease should be added every 100-150 hours of work. If grease leakage is found, the cause should be promptly identified and the sealing components replaced.
Observation of wear condition: During daily inspections, pay attention to the wear condition of the supporting wheels. If serious wear, uneven wear, or excessive clearance between the shaft sleeves are found on the surface of the wheel body, the supporting wheels should be replaced in a timely manner to avoid affecting the walking performance of the excavator.
Adjust track tension: Properly adjust the tension of the track, as excessive or insufficient tension can increase the load on the support wheels and accelerate their wear. Generally speaking, the sag of the track should be controlled between 30-50 millimeters.
Chain wheel support
Cleaning and inspection: Regularly clean the sprocket wheel, remove surface dirt and debris, and check its wear condition. If severe wear, cracks or inflexible rotation are found on the surface of the sprocket wheel, it should be replaced in a timely manner.
Check installation position: Ensure that the installation position of the sprocket is correct and the clearance between it and the track is appropriate. If the position of the sprocket is found to be offset or interferes with the track, it should be adjusted in a timely manner to prevent damage to the sprocket due to abnormal friction.
Maintaining the track: Keeping the track in good condition is also very important for the maintenance of the idler wheel. If the track is loose, deformed, or unevenly worn, it will increase the load on the sprocket wheel and accelerate its damage. Therefore, it is necessary to regularly check and adjust the condition of the tracks to ensure their normal operation.
Drive wheel
Check tooth wear: The meshing area between the driving wheel teeth and the track shoes is prone to wear, and the degree of wear should be checked regularly. If the tooth wear exceeds the specified range, it will cause poor meshing between the track and the driving wheel, resulting in slipping, jumping teeth and other phenomena, affecting the walking power and stability of the excavator. At this time, the driving wheel should be replaced in a timely manner.
Ensure secure installation: Check if the installation bolts of the drive wheel are tightened. If they are loose, tighten them in a timely manner to prevent displacement of the drive wheel during operation, which may affect its normal engagement and transmission with the track.
Lubrication and heat dissipation: Although the drive wheel usually adopts a sealed lubrication structure, attention should still be paid to its lubrication and heat dissipation. If the temperature of the driving wheel is found to be too high or there is abnormal noise, it may be caused by poor lubrication or poor heat dissipation, and the fault should be checked and eliminated in a timely manner.
Guiding wheel
Check the guiding performance: The guiding wheel mainly plays a guiding role, and it should be regularly checked whether it can accurately guide the running direction of the track. If the guide wheel is found to be skewed or stuck, it will cause the track to deviate and affect the straightness of the excavator's walking. At this time, the guide wheel should be adjusted or replaced in a timely manner.
Maintenance of tensioning device: The guide wheel is connected to the tensioning device, and the state of the tensioning device directly affects the working performance of the guide wheel. Regularly check whether the spring, oil cylinder and other components of the tensioning device are normal, to ensure that they can provide appropriate tension for the track, so that the guide wheel can work normally.
Cleaning and protection: Keep the guide wheel clean to prevent dust, dirt, etc. from entering its interior and affecting its guiding and rotating performance. At the same time, an appropriate amount of lubricating grease can be applied to the surface of the guide wheel to prevent rust and reduce wear.
Through the above maintenance methods, the service life of excavator chassis components can be effectively extended, the work efficiency and reliability of excavators can be improved, and maintenance costs and downtime can be reduced.
