A hydraulic pump is a hydraulic component that provides pressurized liquid for hydraulic transmission and is a type of pump. Its function is to convert the mechanical energy of the power machine (such as electric motor and internal combustion engine, etc.) into the pressure energy of the liquid. The figure shows the working principle of a single plunger pump. The cam is rotated by an electric motor. When the cam pushes the plunger to move upward, the sealing volume formed by the plunger and the cylinder decreases, and the oil is squeezed out from the sealing volume and discharged to the required place through the one-way valve. When the cam rotates to the descending part of the curve, the spring forces the plunger downward to form a certain vacuum, and the oil in the oil tank enters the sealed volume under the action of atmospheric pressure. The cam makes the plunger rise and fall continuously, the sealing volume decreases and increases periodically, and the pump continuously absorbs and discharges oil.

The construction machinery market has picked up. In February, the year-on-year decline in domestic sales of excavators in my country narrowed, and the growth rate of exports returned to positive. According to statistics from the China Construction Machinery Industry Association, in February 2023, 26 excavator manufacturers sold 21,450 excavators of various types, a year-on-year decrease of 12.4%, of which 11,492 were domestic units, a year-on-year decrease of 32.6%; exports were 9,958 units, a year-on-year increase of 34%. %. From January to February 2023, the sales volume of excavators was 31,893 units, a year-on-year decrease of 20.4%; of which 14,929 were domestic units, a year-on-year decrease of 41.1%; exports were 16,964 units, a year-on-year increase of 14.9%. The Paper learned that the year-on-year decline in excavator sales in February narrowed by 20.7 percentage points from the previous month, of which the year-on-year decline in domestic sales narrowed by 25.9 percentage points from the previous month, and the year-on-year growth rate of export sales turned from negative to positive. It is worth noting that in the first two months of this year, my country's excavator export sales exceeded domestic sales. Orient Securities Research reported that sales of excavators in February were in line with expectations, and the continued slump in domestic sales year-on-year was related to the short-term impact of the national standard switch and Spring Festival factors. In terms of actual construction, according to data from Komatsu's official website, the operating hours of Komatsu excavators in China in February were 76.4 hours, a year-on-year increase of 61%, ending 11 months of year-on-year decline and a month-on-month increase of 79.8%. From the perspective of other regions in the world, in February, the operating hours of Komatsu excavators in China, North America, and Indonesia all achieved positive year-on-year growth. It is worth noting that among overseas markets, the Southeast Asian market has a large demand for engineering construction, and the number of operating hours has continued to increase year-on-year for more than 24 months. According to Komatsu data, the average monthly operating hours in Southeast Asia in 2022 will be 198 hours, which is 2-4 times that of other regions or countries. Guotai Junan Research Report stated that considering the steady increase in demand for engineering construction in overseas regions such as Southeast Asia and Africa, the products of domestic enterprises are more cost-effective, and the electrification is progressing rapidly, it is expected to accelerate their overseas expansion. The global phenomenon of Chinese manufacturing and supply is obvious, and domestic enterprises are expected to further improve the global market Accounting rate. Domestically, this year's government work report pointed out that 3.8 trillion yuan of new special bonds will be issued in 2023, an increase from the 2022 quota. Superimposed on the acceleration of the issuance of new special bonds in January 2023, it will help the recovery of the infrastructure industry and is expected to stimulate the demand for construction machinery. Orient Securities Research Report stated that with the implementation of the China Securities Regulatory Commission’s adjustment and optimization measures for real estate equity financing, the recovery of infrastructure and real estate is expected to increase, and the bottom-up effect of real estate infrastructure will gradually emerge, which is expected to stimulate a rebound in downstream real estate demand. According to the Zheshang Securities Research Report, based on the 8th year of excavators as the update peak period, domestic excavator update demand will bottom out in 2023, and update demand and exports will dominate, driving the sales of the excavator industry to gradually bottom out. Assuming that the sales of excavators will decline by 5% in 2023, the growth rate of exports will decline, and the annual export growth will be 30%, which can hedge the 30% decline in China. It is expected that the sales of excavators will bottom out in 2023.

Excavator sales were still down year-on-year, but with the improvement of downstream construction, there was an increase month-on-month. A few days ago, the latest data released by the China Construction Machinery Industry Association showed that according to the statistics of major excavator manufacturers, 21,500 excavators of various types were sold in February this year, a year-on-year decrease of 12.4%, and the decline narrowed by about 20 percentage points from the previous month. Compared with January, 11,000 more excavators were sold in February, a month-on-month increase of 1.05 times. In January, the Lunar New Year holiday and other reasons affected the sales of excavators. After the Lantern Festival, the start of work in the downstream market improved, and the construction machinery industry recovered. In February, domestic sales of excavators were 11,500 units, a year-on-year decrease of 32.6%, and a month-on-month increase of 2.34 times; export performance also began to pick up, with a single-month export volume of 9,958 units, a year-on-year increase of 34%, and a month-on-month increase of 42%.

CCTV News: In recent years, more and more Chinese construction machinery has appeared in overseas markets, and the continuous growth of overseas orders also confirms that the innovation of my country's construction machinery industry has been more widely recognized. In the excavator assembly workshop of a construction machinery company in Changsha, Hunan Province, the staff are intensely doing assembly work. The relevant person in charge of the company told the reporter that since the beginning of this year, the sales of excavators in overseas markets have been very hot, among which micro excavators are most popular in European and American markets. At present, most of the products produced on this production line are these 2-ton miniature excavators. In recent years, my country's export of various construction machinery products including excavators has maintained a high growth trend. While actively deploying overseas markets, many companies are also constantly upgrading their products to meet the needs of overseas markets. According to data from the Ministry of Industry and Information Technology, my country has formed 22 major categories of construction machinery products, becoming one of the countries with the most complete product categories and varieties. Among them, the output of major products such as excavators, cranes, and loaders ranks first in the world. According to the statistics of 26 excavator manufacturers by the China Construction Machinery Industry Association, in the first 10 months of 2022, my country exported 89,457 excavators, a year-on-year increase of 67.3%. In addition, in the first 10 months of this year, my country's construction machinery exports amounted to US$36.521 billion, a year-on-year increase of 34.2%.

Excavator sales in April exceeded expectations, and the industry's capacity bottleneck reached its limit. It is expected that sales in May will reach 30,000-35,000 units, a year-on-year growth rate of 59%-85%, and continue to hit a new high for the month. The domestic demand for excavators has increased significantly, exceeding market expectations. In the context of the global spread of the epidemic, infrastructure, as a purely domestic demand industry, will be the focus of policy efforts. The following development trends of the excavator industry analyze. The overall growth rate of excavator sales exceeded the forecast in early March. Mainly from the domestic market. The excavator business report pointed out that in March 2020, the domestic market sales of excavators were 46,610 units, a year-on-year increase of 11.24%, and the growth rate rebounded significantly from February; the export market sold 2,798 units, a year-on-year increase of 17..71%. Affected by the epidemic, the growth rate dropped significantly compared to February. With the implementation of the One Belt One Road policy and the development of foreign market infrastructure, all domestic host manufacturers are planning overseas markets. Now from the three major performances to understand the analysis of the development trend of the excavator industry. Performance 1: The excavation machinery industry will become the vanguard of the internationalization strategy of the construction machinery industry. Analysis of the development trend of the excavator industry shows that the international strategic layout of China's high-end equipment manufacturing industry has begun, and the construction machinery industry has taken the lead in the layout. Excavators will become the vanguard of the world's attention in this wave of internationalization, which will change the global competition pattern of China's excavator industry. Of course, it depends on the pace of internationalization strategy of Chinese excavator main engine manufacturers. From the overall perspective, the internationalization road of domestic leading enterprises will continue to open up. Performance 2: Product optimization and export expansion will become new forces for future industry development. According to the analysis of the development trend of the excavator industry, in the case of low-end product profits falling, the optimization of product structure will increase the proportion of high-end product exports and enhance export competitiveness. For high value-added products such as excavators, although they have relatively high export prices, most of them are currently exported The export market is occupied by foreign brands, so expanding the export proportion of local high-end products will effectively improve the export profitability of China's construction machinery and enhance export competitiveness. Export expansion will also greatly expand the sales space of China's excavating machinery. . Performance 3: Localized production to supply the world is an ideal development model for China's excavation machinery industry. According to the analysis of the development trend of the excavator industry, global supply can not only greatly increase the proportion of export revenue, but also promote the development process of globalization. According to the background and experience of the global development of Japanese construction machinery, the appreciation of the yen, trade frictions and rising costs are the direct trigger points, while the vast overseas market demand is the most fundamental driving force. The history is so similar, and these factors are also the direct or indirect driving force for the globalization of China's excavating machinery industry. With the gradual recovery of the economy, road construction, real estate construction, railway construction and other fields directly stimulate the demand for excavators. Affected by the large-scale infrastructure plan promoted by the state and the investment boom in the real estate industry, the Chinese excavator market will have further growth. The prospect of the excavator industry is promising in the future. With the acceleration of economic construction and the implementation of With the increase of construction projects, the demand for excavators will also increase year by year.

What kind of wheeled excavator can be the darling of today's market? What kind of characteristics can provoke the mainstay of investment income? Today we might as well analyze the colorful domestic market and the three major competitive advantages that wheeled excavators need to have to make money: Manipulability: efficient workmanship with soft operation and twice the result with half the effort Under the demand of the mechanized market, high-efficiency work is often indispensable. This is also the magic weapon for wheeled excavators to stand out under fierce competition. However, it is often gentle movements that support high-efficiency work. With "softness" to overcome rigidity and "stableness" to win, wheeled excavators as construction machinery, soft movements and stable workmanship can not only bring users a comfortable and pleasant driving experience, but also make the complex market The working conditions became orderly. In the domestic wheeled excavator market, there are countless brand models, but few can achieve soft and stable handling, because this not only tests the professionalism of major wheeled excavator manufacturers, but also Higher requirements are put forward for the core technical field. In some mature markets, "Nanxinyuan and Beibaoding", which are talked about by people, are also well-known for their soft handling. Multi-function: one machine with multiple uses and multiple working conditions, an all-rounder The reason why wheeled excavators are widely concerned in the domestic market is largely due to their applicability in multiple working conditions. As an excavator, the continuous extension and deepening of the horizontal field of wheeled excavators, the use of various attachments Flexible use makes it have unlimited potential for development. Even in some highly saturated local markets, the wheeled excavator models that are all-pervasive and pervasive still reflect the high returns of flexible response. But how many models of wheeled excavators on the market can truly achieve the word "multi-function"? Presumably there are only a handful of wheeled excavators that are good at earthwork operations, and they often perform mediocre in loading and unloading conditions, but this does not mean that you can have both fish and bear's paws. As long as you pay a little attention to the surrounding market, The reason why some people can survive in the cracks is that they fully apply the multi-purpose of wheeled excavators to the practical market. Low fuel consumption: low-carbon environmental protection, high efficiency and intelligent energy consumption output ratio Presumably seeing low energy consumption, many people do not take it seriously, especially some novice customers who have never been in contact with wheeled excavators. When competition puts daily consumption, especially fuel consumption, on the list that affects net income, the root cause of flat income is the gap in unit fuel consumption. From a professional point of view, we call it the energy consumption-output ratio. Of course, low fuel consumption is not a simple problem of fuel consumption that is isolated, but is based on high-efficiency operations, that is, the operating efficiency of the same model of other brands per unit time is greater than or equal to the fuel consumption of the same model. Economical, this point is also difficult to achieve for some brands that only rely on pure assembly and processing. The useless work loss of each power output link will be controlled at the critical point of entropy increase in the second law of thermal energy. To put it plainly, it is Try to avoid useless work loss in each working device link as much as possible, and put as much fuel kinetic energy into actual work as possible. Manipulative, multi-functional, low fuel consumption, if you want to get a higher return on investment, have you chosen the right wheeled excavator?