Let's talk about the maintenance problems of the gearbox of the lawn mower.

What maintenance issues do I need to pay attention to when using a lawn mower gearbox?

The lawn mower is a kind of weeding equipment commonly used in garden operations. Because its main purpose is to cut weeds, it is a kind of garden machinery that is prone to failure. Therefore, it is a very important step for its daily use and maintenance. The lawn mower gearbox is one of the affected parts. The following editor will introduce some maintenance work related to the lawn mower gearbox.

1. Oil maintenance

Before using the lawn mower each time, check whether the oil level is between the upper and lower scales of the oil gauge. The new machine should change the oil after 5 hours of use, and replace it again after 10 hours of use. After that, the oil should be changed regularly according to the requirements of the manual. The oil should be changed when the engine is hot, and do not add too much oil, otherwise, there will be black smoke, insufficient power (too much carbon in the cylinder, small spark plug gap), engine overheating, etc. Do not add too little oil, otherwise the engine gear will make noise, the piston ring will wear and damage when accelerating, and even the engine Will be severely damaged.

2. Maintenance of air filter

Before and after each use, check whether the air filter is dirty, and clean it frequently in Qin Ying. If it is too dirty, it will cause difficulty in starting the engine, black smoke, and insufficient power. If the filter element is made of paper, remove the filter element and dust it off. If the filter element is a sponge, you can clean it with gasoline, and then drop some lubricating oil on the filter element to keep the filter element moist, which is more conducive to dust absorption.

Why does the gearbox of the lawn mower often fail?

You may not have heard of such products as gearboxes. In fact, gearboxes are widely used, especially in some wind turbines. Today, I will tell you why the gearboxes of lawn mowers often fail:

Statistics show that about 50% of the failures of wind power gearboxes are still related to the selection, manufacture, lubrication or use of bearings. At present, due to backward technical conditions and other reasons, many core components such as motors, gearboxes, blades, electric control equipment and yaw systems of domestic megawatt and above units are imported, the gearbox bearings, yaw bearings, pitch bearings, spindle bearings, etc. used in these large wind turbines are completely imported, so a more accurate bearing life calculation method is particularly important for the design of wind turbine gearboxes.

Because the bearing requires high reliability, the service life of the bearing should not be less than 130000 hours. However, due to too many factors affecting the fatigue life of the bearing, the theory of the fatigue life of the bearing still needs to be improved. At present, there is no unified calculation method accepted by various industries at home and abroad. Operating temperature, lubricating oil viscosity and cleanliness, speed and other factors have a great impact on bearing life. When the operating state becomes worse (temperature increases, speed decreases, and pollutants increase), the bearing life may be greatly reduced. In-depth analysis of various factors affecting the bearing life of wind power gearbox and research on more accurate bearing life calculation methods are the top priorities for the domestic bearing industry and even the wind power industry.

Xiao Bian has been introduced here. Thank you for watching. Let's see you next time.