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What are the common faults of excavator accessories?
2022-05-20
1. Grinding gear end face:
After the gear pump gear is worn, it should be ground with a high-precision grinder, and a responsible master should be found to operate it. For example, the grinding machine table must be absolutely clean, and no dust is allowed on the platform. Because the worktable is slightly unclean, the ground plane will be offset from the vertical line of the bearing hole.
2. Assemble the gear pump
The wear of the pump casing will be more in the oil inlet cavity. If the pump casing is symmetrical, it can be turned 180 degrees. reuse. For the passive gear, the two ends cannot be exchanged, and a mark should be made when removing it. Because the gears will wear on one side. The driving tooth is integrated with the rotating shaft and cannot be turned over; turning the passive tooth over can change the contact point of the meshing line of the two gears. After the pump is assembled, it is necessary to add a little lubricating oil before rotating it by hand to make it feel smooth.
3. The bearings on the end face should be replaced at the same time during assembly
must be replaced at the same time. Because of the wear of the end face of the pump, the main reason is that the bearing clearance is too large, which causes the gear to sway during rotation.
The above are the relevant handling skills of common faults of excavators, I hope to help you.
Before work, the daily inspection and maintenance should not be less. Check whether the oil, coolant and hydraulic oil of the excavator are sufficient. When it is insufficient, it needs to be refilled in time. Pay attention to prohibit smoking when refueling, so as to avoid fire.
4. Check the hydraulic system of the excavator, observe whether there is leakage in the hydraulic pipeline, operating valve, hydraulic cylinder, oil pump, etc., if necessary, deal with it in time to prevent all hidden dangers.
5. There are still many inspection items before operation, such as checking and adjusting the back tension of the crawler, checking the liquid level of the front window cleaning fluid, checking and cleaning the air filter element, checking the rotary structure, instruments, working devices, etc., after confirming that the excavator is normal Work again.
As a kind of construction machinery, excavators are not small in size, but they still take up a lot of space, so the storage of excavators is a problem that many users have to think about. Precautions:
It is suggested that the excavator should be parked in a dry room. If there is no large indoor space, you can choose to park outdoors, but the ground is required to be flat and covered with wooden boards. In order to avoid rain and sun, cover it with a cloth.
Before long-term storage, it is necessary to protect the machinery, repair the damaged parts, and organize them to keep the technical condition in good condition.
(1) Do not open the radiator compartment partition at will or use it as a heat transfer process for vortex components. It is not always casual due to the effects of high temperature outgassing.
1. Daily inspection
Before the excavator starts construction, it also needs to be checked before starting the engine, such as checking the liquid level of the coolant (adding water), checking whether the air filter element is blocked, checking the oil level of the excavator engine, checking the hydraulic oil level ( Add hydraulic oil), check the excavator fuel level (add fuel), check whether the horn is normal, check the lubrication of the bucket, check the water and sediment in the oil-water separator, etc. As the use time increases, for example, daily inspections cannot be carried out during the continuous rush period, and inspections can be carried out every other week. At this time, attention should be paid to checking the belt tension, battery electrolyte and replacement of the oil in the engine oil pan.
After the gear pump gear is worn, it should be ground with a high-precision grinder, and a responsible master should be found to operate it. For example, the grinding machine table must be absolutely clean, and no dust is allowed on the platform. Because the worktable is slightly unclean, the ground plane will be offset from the vertical line of the bearing hole.
2. Assemble the gear pump
The wear of the pump casing will be more in the oil inlet cavity. If the pump casing is symmetrical, it can be turned 180 degrees. reuse. For the passive gear, the two ends cannot be exchanged, and a mark should be made when removing it. Because the gears will wear on one side. The driving tooth is integrated with the rotating shaft and cannot be turned over; turning the passive tooth over can change the contact point of the meshing line of the two gears. After the pump is assembled, it is necessary to add a little lubricating oil before rotating it by hand to make it feel smooth.
3. The bearings on the end face should be replaced at the same time during assembly
must be replaced at the same time. Because of the wear of the end face of the pump, the main reason is that the bearing clearance is too large, which causes the gear to sway during rotation.
The above are the relevant handling skills of common faults of excavators, I hope to help you.
Before work, the daily inspection and maintenance should not be less. Check whether the oil, coolant and hydraulic oil of the excavator are sufficient. When it is insufficient, it needs to be refilled in time. Pay attention to prohibit smoking when refueling, so as to avoid fire.
4. Check the hydraulic system of the excavator, observe whether there is leakage in the hydraulic pipeline, operating valve, hydraulic cylinder, oil pump, etc., if necessary, deal with it in time to prevent all hidden dangers.
5. There are still many inspection items before operation, such as checking and adjusting the back tension of the crawler, checking the liquid level of the front window cleaning fluid, checking and cleaning the air filter element, checking the rotary structure, instruments, working devices, etc., after confirming that the excavator is normal Work again.
As a kind of construction machinery, excavators are not small in size, but they still take up a lot of space, so the storage of excavators is a problem that many users have to think about. Precautions:
It is suggested that the excavator should be parked in a dry room. If there is no large indoor space, you can choose to park outdoors, but the ground is required to be flat and covered with wooden boards. In order to avoid rain and sun, cover it with a cloth.
Before long-term storage, it is necessary to protect the machinery, repair the damaged parts, and organize them to keep the technical condition in good condition.
(1) Do not open the radiator compartment partition at will or use it as a heat transfer process for vortex components. It is not always casual due to the effects of high temperature outgassing.
1. Daily inspection
Before the excavator starts construction, it also needs to be checked before starting the engine, such as checking the liquid level of the coolant (adding water), checking whether the air filter element is blocked, checking the oil level of the excavator engine, checking the hydraulic oil level ( Add hydraulic oil), check the excavator fuel level (add fuel), check whether the horn is normal, check the lubrication of the bucket, check the water and sediment in the oil-water separator, etc. As the use time increases, for example, daily inspections cannot be carried out during the continuous rush period, and inspections can be carried out every other week. At this time, attention should be paid to checking the belt tension, battery electrolyte and replacement of the oil in the engine oil pan.
2. Weekly maintenance
