Small excavators are commonly used construction machinery, which can work in a narrow space. However, due to the short service life of small excavators and their vulnerability to damage, regular maintenance is required.Generally speaking, the maintenance of small excavators includes daily maintenance, regular maintenance and special maintenance. Routine maintenance is essential, including regular inspection of machine parts, start-up test before use and shutdown test after use. Regular maintenance is generally carried out once a year or half a year, and the main purpose is to carry out a detailed overhaul of the whole machine. The special maintenance is to carry out some specific maintenance work under specific use conditions (such as long time work, large amount of use, and abnormal conditions).Small excavators are very practical, but there are also some failures. Small excavators are common construction equipment and are also vulnerable to damage. Let's look at the common faults of small excavators.The peculiar smell inside the cab is caused by the filter element of the small excavator that cannot be replaced in time or the filter element has been blocked. In addition, because the seal of the small excavator is not tight, it will also lead to peculiar smell inside the cab.Engine oil burning is caused by the leakage of engine cooling water or the tightness of engine air brake. If the air brake of the engine is not tight, the engine cooling water will leak, which will cause the engine to burn oil.The insufficient air intake of small excavators will also cause engine oil burning. There are many reasons for this situation, including engine air brake leakage, brake pad looseness, inductance switch failure, flywheel brake, flywheel failure, flywheel start, flywheel brake pad looseness and other reasons. If you want to repair this problem, you must repair it according to the specific situation.There are many reasons for this situation, such as cracking of the wrap disc, loose flying disc, loose large disc, loose large disc brake pad, loose transmission belt and other reasons. To fix this problem, we must repair it according to the specific situation.

According to the latest statistics of China Construction Machinery Industry Association, in September this year, 25 excavator manufacturers included in the statistics sold 26000 excavators of all kinds, up 64.8% year on year. Among them, the domestic sales volume was 22600, up 71.4% year on year; 3436 sets were exported, up 31.3% year on year.In the first nine months of this year, a total of 236500 excavators were sold in China, an increase of 32% year on year, which has exceeded the sales of the whole year last year. Among them, the domestic sales volume was 212800 units, up 33.2% year on year; 23700 sets were exported, up 22.2% year on year.This means that the sales of domestic excavators will hit a new record this year.In 2019, the sales of domestic excavators reached 235700 units, up 15.9% year on year, breaking the sales record of 203000 units in 2018.Since this year, the year-on-year growth rate of monthly excavator sales has exceeded 50% for six consecutive months.In January and February, affected by the COVID-19, the sales volume of domestic excavators declined sharply, but after March, the double-digit growth was achieved against the trend, and after April, the sales growth continued to exceed 50%.In April, 25 excavator manufacturers included in the Association's statistics sold 45400 excavators of all kinds, with a year-on-year growth rate of 59.9%; In May, the sales of excavators still maintained a good momentum, reaching 31700 units, with a year-on-year growth rate of 68%.In June, the sales volume of excavators was 24600, up 62.9% year on year; The sales volume of excavators in July was 19100, up 54.8% year on year; In August, the sales volume of excavators was 209 thousand, up 51.3% year on year.Many institutions predicted that under the influence of a number of favorable policies, the construction machinery industry will maintain a high outlook.The construction machinery industry is one of the important industries in China's machinery industry. Its product market demand is greatly affected by the national infrastructure construction, and its downstream customers are mainly concentrated in infrastructure, real estate and other investment-intensive industries, which are closely related to the macroeconomic cycle.The sales manager of excavators in Shandong Province once told Interface News that the current tightening of environmental policies is a major factor affecting the recent surge in excavator sales.Since this year, domestic excavators have implemented the fourth national emission standard. GF Securities once estimated that among the domestic excavator holdings, there are about 800000 in the first and second emission standards. If all of these machines are eliminated in the next five years, the average annual replacement volume will reach about 160000, and the demand for replacement is still relatively strong.Soochow Securities pointed out that in October, the production scheduling of construction machinery core parts manufacturers increased by more than 40% year on year, still showing a high growth rate. With the arrival of the fourth quarter of the stock season and the gradual emergence of the effect of infrastructure recovery, it is expected that the sales of excavators will continue to maintain a strong trend.Soochow Securities said that under the background of the continuous demand for the renewal of old excavators, the improvement of the replacement effect of excavators on loaders, and the non-pessimistic investment in real estate infrastructure, the annual sales of excavators in China is expected to reach more than 300000, with a year-on-year increase of more than 30%.Galaxy Securities pointed out that with the gradual easing of the epidemic and the gradual recovery of the economy, the market's expectation of the reverse cycle of infrastructure investment has weakened, but from the perspective of forward-looking indicators, the sales growth of excavators and heavy trucks is still strong. Under the background of accelerated construction of major projects in the second half of the year, it is expected that the infrastructure investment in the second half of the year will further develop.According to TianyanchaAPP data, in the past decade, the number of excavator-related enterprises (all enterprises) in China has increased from 10000 to 56000, an increase of nearly five times, and the number of new enterprises has increased year by year.

In recent years, in the domestic excavator machinery market, the purchase boom of wheeled excavators has increased year by year. With the strong promotion of national policies, the rapid development of new rural construction and the new reconstruction of rural roads have overwhelmingly carried out the price of wheeled small excavators. It is expected that the sales of wheeled excavators in the country will show an increasing trend in the next decade.The advantage of the wheel excavator is that it is easy to walk, unlike the combination of the crawler truck and the trailer, but now the traffic is convenient. Does the wheel excavator need a driver's license to walk on the road? Where do I get the license? What kind of license?Excavators belong to construction machinery, but are different from forklifts and loaders. Many regulations have not clearly pointed out where the wheel excavator went? Will I be prosecuted for walking on the road?At present, in the national market, Tianjin, Liaoning, Jilin, Guangdong and other regions, the road traffic management department of wheeled excavator will investigate and deal with unlicensed vehicles. Traffic control has not yet appeared in most other regions. After all, there are no clear regulations.With the increasing number of domestic wheel excavators, traffic control is only a matter of time. Customers who buy wheel models should consider this factor from a long-term perspective when purchasing a car. Why do you say that because it involves taxes, licenses and other contents and expenses?Take Shenyang City, Liaoning Province as an example, the wheel excavator must pay tax before applying for the license plate, which is the same as the purchase of private cars, but the tax rate of the wheel excavator model is 10% of the cost of the car purchase, that is to say, 20000 tax will be paid for 200000 cars, which undoubtedly adds a layer of investment pressure to the buyers.In this way, customers who want to buy a car still have to choose calmly, because some domestic brand models are duty-free. Of course, the manufacturer and model must be formal, and must pass the review of the National Locomotive Center and the State Administration of Taxation.As far as I know, the wheel excavator of Baoding brand in Texas is tax-free, so its wheel excavator is very popular in many traffic. The reason for the control area is that it is not easy to get money from anyone after all, and the avoidable investment should be avoided.