The road sweeper is a special sanitation vehicle equipped with sweeping systems such as sweeping brushes. It is mainly used for cleaning operations in large and medium-sized urban sanitation departments. The road sweeper greatly liberated the work intensity of sanitation workers, improved work efficiency, and reduced secondary pollution such as dust. If a road sweeper is well maintained, its service life has greatly exceeded its own value. Then some car owners will have questions. Does my car need maintenance if it is useless? Of course, it is necessary because the road sweeper was useless for more than a month, and when it was used again, many parts were found to be damaged, some of which were serious enough to require major repairs. The following is the manufacturer's summary of the hazards of not using the road sweeper for a long time?
1. Oil seal aging: When the sweeper stops, the contact force around the oil seal is always uneven. In the direction where the force is large, the oil seal variable is large; the longer the road sweeper is stopped, the more difficult it is to recover the variable until the oil seal is permanently deformed, which is very easy to leak oil.
2. Engine oil oxidizes and corrodes parts: If the road sweeper is stopped for a long time, the oil oxidation will be serious. After the engine oil is oxidized, the lubrication effect will be poor, and some acidic substances will also cause corrosion to the machine parts. The longer the road sweeper is stopped, the more serious the deterioration. When the engine is started again, dry friction or semi-dry friction will be formed between the cylinder and the piston, which accelerates the wear of the parts, and the starting resistance is greatly increased, causing difficulty in starting.
3. The battery is scrapped in advance: Lead-acid batteries are generally used on road sweepers, which are characterized by self-discharge once the road sweeper stops. Under normal conditions, self-discharge of the battery every day and night can reduce the capacity by more than 1%. What is particularly serious is that after a long-term self-discharge of the battery, sulfide is generated on the surface of the electrode plate, which affects the recharging effect of the battery, and eventually causes the battery to be scrapped early.
4. Tire deformation: After the road sweeper stops, the weight of the road sweeper will be borne by the 4 tires that touch the ground, causing the contact parts to shrink and deform. The longer the road sweeper is stopped, the more difficult it is to recover the deformed parts, which will change the weight distribution around the tires and cause an uneven rolling radius, resulting in unbalanced tires. Once the sweeper enters high-speed driving, the vehicle body will shake, which can accelerate the wear of the tires and can also bring hidden dangers to driving safety.
5. Electronic components malfunction: The electronic components and connectors on the road sweeper have a common feature, that is, they must be waterproof, moisture-proof, and corrosion-proof, otherwise they will cause malfunctions. For the electronic components or plug-in connectors of the road sweeper, the possibility of being damp will greatly increase, and the longer the parking time, the higher the probability of failure.
Now that everyone knows that there are so many hazards in the long-term suspension of road sweepers, it is necessary to avoid long-term suspension. However, in some cases, some car owners have to stop the sweeper for a period of time. At this time, preventive work should be done in advance and necessary maintenance measures should be taken to keep it in good condition.
1. Clean and tidy the road sweeper
Before the road sweeper truck is parked, the whole car should be cleaned and tidied up to avoid leaving mud stains. The tire pressure should be adjusted to the upper limit, the fuel tank should be filled with fuel, and the entire vehicle circuit should be closed. If the parking period exceeds one month, not only should the tire pressure be adjusted to the upper limit, but also the garbage sweeper should be moved a few centimeters every other week to prevent the tires from being compressed in a fixed position to cause deformation of the radiation wire in this part.
2. Drain antifreeze
Before the road sweeper is stopped, all the antifreeze in the cooling system should be drained, the oil should be drained, and the pile head should be removed after the battery is fully charged, and it should be changed regularly during parking.
3. Use a jack to set up the car
Before the road sweeper stops, use a reliable jack to frame the car so that the tires and suspension components are no longer stressed.
4. Keep ventilation in the garage
The garage where sweepers are parked should always be ventilated to keep the relative humidity of the air below 70%. The rusty parts and the surface of the machine parts should be coated with oil, grease, or wrapped up with oiled paper. The pores on each assembly mechanism should be sealed to prevent air, moisture, and dust from entering the interior.
5. Dry the carpet in the car
The cotton and linen products on the car, such as carpets, can easily absorb moisture. Especially in humid areas and rainy seasons, it is more susceptible to damp and mildew. Therefore, it is best for car owners to entrust their family members to frequently check the cotton and linen products on the car, air them in time, and keep them dry.
6. The gasoline tank must be tightly sealed
When the road sweeper is stopped for a long time, the octane number of gasoline will decrease with the loss of light components and the increase of the gum content, thereby reducing its anti-knock resistance. Therefore, the gasoline tank should be tightly sealed and the temperature should not be too high. It is best not to store gasoline for too long.
7. Start the engine once a month
If the road sweeper is not used for a long time, it is best to entrust your family to start the engine once a month to check the engine's operation. If there is any abnormality, it needs to be adjusted and repaired in time.
8. Drive one mileage per week
When the car owner does not use the car for a period of time, it is best to entrust the family to drive the car on the highway for a certain mileage every week to maintain the various performance of the garbage sweeper.
9. Check the battery frequently
The electrolyte level of the battery must be 10-15mm higher than the electrode plate. If it is insufficient, add distilled water in time, keep sufficient power, and charge the battery if necessary.
10. Special reminder
During the long-term parking period, road sweepers should avoid dampness and rodent damage. Humidity will not only corrode metal parts, but also damage electrical components, which is fatal to a road sweeper with a high degree of automation; and rodent damage will erode wires, tires, and interior parts. Therefore, we must avoid the above-mentioned damages, and do not allow moisture and rodents to take advantage of.
