What about the prospects of hydraulic in the domestic mechanical processing industry? How much funds are needed if you invest in this bank. Is there a product that is more suitable for beginners than hydraulic products? Please make a suggestion! The best one mentioned by the branch! thank you all!
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First, control experts to see the hydraulic -hydraulic pressure can be used as "people cannot do, people who are not good for people" (hydraulic pressure does not do those other transmission methods, and it cannot be done well. )
(This paragraph is to see hydraulic pressure from the perspective of the entire control system. The author is not engaged in hydraulic pressure, but is engaged in the control system)
The foreign electronic information science classic textbook series
modern control engineering (No. 1 3) (US) K.OGata is
p.235
If the characteristics of the hydraulic system:
is reliable, accurate, flexible,
The high power weight ratio,
fast Starting and stopping characteristics,
The smoothness and precision of reverse exercise,
It simplified operation
The main advantages of the hydraulic system:
1. Hot exchange With lubrication;
2. Small size and large effort;
3. Fast response (up, stop, reverse);
4. The working conditions can , Survivor);
5. The actuator can be straight, rotating, flexible;
6. Large rigidity.
The main disadvantages of the hydraulic system:
1. The source of hydraulic sources is not as good as the power supply;
2. The cost may be higher than the electrical;
3. r n4. Maintenance difficulty;
5. Oil pollution causes accidents;
6. Non -linear, etc., difficult to improve the design;
7. Poor damping characteristics and unstable problems.
The second part, general induction
(1) General induction of the advantages of hydraulic technology
1). The power parameter is unseenable, convenient to control, transmission, transmission Stable, excellent characteristics-high accuracy;
-easy to perform positive and reverse line or rotation movement and power control, and have a wide range of speed regulation; The transformation of the reciprocating movement (the pump axis turn/hydraulic cylinder round trip);
-hydraulic system loading rigidity is large (5 times the hydraulic motor opening speed is 5 times the motor), high accuracy;
--- can be available Safe, reliably and quickly realize the starting and braking and braking;
-when the hydraulic motor and pump static can not move, it can maintain a large load (force, torque) state;
-easy to be simple The ground limits the pressure and torque;
-can control the power distribution of the multi-load;
-can simply implement the composite control of P Q N;
2) Large power and high power density, that is, the power weight ratio is large (1 larger than the electromagnetic execution element), which can constitute a large power control unit with a small volume, light weight, and fast response speed;
3) System It is highly flexible and highly adaptable. The institution is relatively simple. From the input link (usually pump axis) to the output link (hydraulic motor shaft or hydraulic cylinder pole), the space arrangement is very large;
4 4 ) Good time characteristics — response fast;
(2) Today, the integrated hydraulic technology of electromechanical liquid belongs to the development of high -tech fields
The development of hydraulic control technology, decisively affected by some technological development of some surrounding fields For example, the so -called 'electromechanical integration ()' technology formed by the newly combined with microelectronics technology (including the necessary software) and micro -machine technology, and material technology.
The product of the combination of electrical or electronic technology and hydraulic transmission and control technology --- Electric hydraulic control system has both the dual advantages of electrical and hydraulic pressure, forming a competitive self-technical characteristics. (Easy to implement automatic control and remote control) (can adapt to simulation quantity and digital volume modulation)
electrical or electronic technology has obvious advantages in the aspects of signal detection, amplification, processing, and transmission. The progress of microelectronics integration technology and computer science has made this advantage more prominent. Therefore, the instruction and signal processing unit of the engineering control system and the detection feedback unit use electronic devices almost without exception. In terms of power conversion amplification unit and execution components, hydraulic components have more superiority.
★ In particular, it should be pointed out that in the occasion that transmits large power, it is usually a more effective way to find technology than hydraulic transmission. It can be compared with better solutions.
(3) Undoubtedly, hydraulic transmission also has some performance, and its advantages are not outstanding. At the same time, it is discovered and solved.
about 7-8 years ago, experts and professors of various countries who engaged in hydraulic technology and control technology internationally said that some people said that the hydraulic industry is a sunset industry and other issues. Replacement hydraulic. The conclusion is that the component of hydraulic and electrons is greater than the competitive component of each other. It is the future of win -win. In the field of engineering control, no one can do without anyone.
The hydraulic industry is an unpopular industry today, but it includes many industries in the industry, which has a large prospect of the automotive industry aircraft rocket launcher industry and so on. You can also start a business, but the investment is mainly expensive. A set of tens of thousands of cheap hydraulic solenoid valves is expensive. There are thousands of thousands of cheap. Give you a suggestion that you can buy a hydraulic connector hydraulic hose folder, etc.
There is a capital to do steel business
With the active implementation of the national energy -saving and emission reduction and the gradual implementation of high -efficiency energy -saving motor subsidy policies, the efficient energy -saving motor industry will usher in explosive growth. In the next few years, the proportion of energy -saving motor equipment will reach more than 60%of the new domestic and medium -sized electromechanical equipment, and the market size of energy -saving electromechanical equipment will reach about 50 billion yuan.
The reference to the "Analysis Report on the Planning and Investment Strategic Planning Planning Planning Planning of China's Industrial Electric Industry" shows that the total capacity of my country's motor installed capacity has reached more than 400 million KW, with an annual power consumption of 1200 billion kWh, accounting for the country's total power consumption. 60%, accounting for 80%of the industrial power consumption, the total installed capacity of the fan, pump, and compressor has exceeded 200 million kW, and the annual power consumption has reached 800 billion kWh, accounting for about 40%of the country's total power consumption. Therefore, the energy conservation requirements on the motor are great, and it is also the most reflected place for energy -saving effects.
At present, China's motor accounts for about 21.5 % of the global motor. This data will increase with the recovery of the international economic environment. The domestic market will grow faster than the European and American markets and other countries in the next five years, especially the high -efficiency motor market will have a lot of room for increase.