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पॉवर ट्रांसमिशन गिअरबॉक्स

पॉवर ट्रांसमिशन गिअरबॉक्स

power transmission gearbox, जगातील अव्वल 10 गिअरबॉक्स उत्पादक, power transmission gearbox manufacturer, gearbox types,

power transmission gearbox is an important mechanical component widely used in wind turbine.Its main function is the wind turbine under the action of the wind power generated by the transfer to the generator and make it get the corresponding speed.

Usually the speed of the wind turbine is very low, far less than the speed required by the generator power generation, must be realized through the power transmission gearbox gear pair speed up action, so the power transmission gearbox is called speed up box.

Chinese gearbox foreign names power transmission gearbox for pass power generator lubrication way Gear oil lubrication, semi-fluid lubricating grease is widely used in transportation equipment, chemical equipment, environmental protection machinery common name acceleration deceleration installation lie, vertical, swing base type, the torque arm type series products are 3 ~ 26 type wind power fields

Helical power transmission gearbox Product Description

1.हेर्व्य कर्तव्य गिअरबॉक्स टॉर्क श्रेणी: 470000N.m पर्यंत

2.Helical power transmission gearbox Output speed:1.7~1200rpm

3.हेव्ही ड्यूटी गिअरबॉक्स इनपुट पॉवर: 2.2 ~ 5366 किलोवॅट

पॉवर ट्रांसमिशन गिअरबॉक्स

4.Helical power transmission gearbox Mounting solution: foot mounted,shaft mounted,shrink disk mounted.

5.Heavy duty gearbox Input:shaft with key-way,IEC flange;

6.Helical power transmission gearbox Output:hollow shaft with key-way,hollow shaft with shrink disk;

7.Heavy duty gearbox Shaft arrangment: A,B,C,D (detailed please see catalogue)

Gears and drivelines can operate in almost every industrial process and are available in all possible shapes and sizes, so they face an extremely wide range of operational requirements and conditions. But no matter what industry or application, all industrial drives face a common challenge -- they must operate as reliably, efficiently and cost-effectively as possible.

पॉवर ट्रांसमिशन गिअरबॉक्सपॉवर ट्रांसमिशन गिअरबॉक्स

1, force also power transmission gearbox modular design, transmission ratio coverage range, fine and reasonable distribution; 2. Transmission power range: 0.12kw-200kw; 3, shape design suitable for azimuth universal installation configuration; 4. Accurate transmission ratio, covering 3.77-281.71, can be arbitrarily selected according to needs; 5. The gear is grinding by a high-precision gear grinder, with stable transmission, low noise and 98% interstage efficiency; 6. Double couplet power transmission gearbox specially designed for special low-speed occasions, F.. R.. The transmission ratio of decelerating motor is extended to 31434. Main material editing 1. Case: cast iron; 2. Gear: 20CrMo steel, treated with carbon and nitriding (maintain hardness HRC60 of tooth surface and thickness of hard layer after fine grinding > 0.5 mm); 3. Flat key: 45 steel. Installation form editing Horizontal installation Vertical installation Axial loading installation Install with locking disc.

पॉवर ट्रांसमिशन गिअरबॉक्स

Industrial transmission Extensive conditions and requirements Gears and drivelines can operate in almost every industrial process and are available in all possible shapes and sizes, so they face an extremely wide range of operational requirements and conditions. But no matter what industry or application, all industrial drives face a common challenge -- they must operate as reliably, efficiently and cost-effectively as possible. SKF meets these requirements SKF helps manufacturers and users find ways to optimize transmission performance and reliability. By using a system approach, SKF can help you realize the full potential of your gear set and improve performance and reliability in the following ways: Maximum torque Reduced size design Long service life Achieve 100% operational reliability Improving energy efficiency

Heavy duty gearbox characteristics:

1.Helical power transmission gearbox Housing material:HT250 high-strength cast iron ;

2.Heavy duty gearbox Housing hardness:HBS190-240;

3.Helical power transmission gearbox Gear material:20CrMnTi alloy steel,other materials requested:17CrNi2Mo,20CrNi4

4.सर्व कर्तव्य गीअरबॉक्स गीअर्सची पृष्ठभाग कठोरता: एचआरसी58-62;

5.Helical power transmission gearbox Gear core hardness:HRC33-40;

6.हर्षी शुल्क गीअरबॉक्स इनपुट / आउटपुट शाफ्ट मटेरियल: 42CrMo मिश्र धातु स्टील;

7.Helical power transmission gearbox Input / Output shaft hardness:HRC25-30;

8.Heavy duty gearbox Heat treatment:tempering,cementiting,quenching.etc.;

पॉवर ट्रांसमिशन गिअरबॉक्स

9.Helical power transmission gearbox Machining precision of gears:accurate grinding, 6-5 Grade;

10.हेव्ही ड्यूटी गिअरबॉक्स नॉईज (मॅएक्स): 60 ~ 68 डीबी;

11.Helical power transmission gearbox Lubricating oil:GB L-CKC220-460, Shell Omala220-460;

12.Heavy duty gearbox Temp. rise (MAX):40°C ;

13.Helical power transmission gearbox Efficiency:94%~96% (depends on the transmission stage) ;

14.हेवी ड्यूटी गिअरबॉक्स टेम्प. उदय (तेल) (MAX): 50 ° से;

15.Helical power transmission gearbox Backlash:≤20Arcmin;

16.Heavy duty gearbox Vibration:≤20µm;

पॉवर ट्रांसमिशन गिअरबॉक्स

The power transmission gearbox must be rigid enough to bear the force of the wind wheel and the reaction force generated by the gear transmission, so as to prevent deformation and ensure the transmission quality.The design of the gearbox body should be carried out according to the layout arrangement, processing and assembly conditions, convenience for inspection and maintenance of the wind turbine power transmission.With the rapid development of power transmission gearbox industry, more and more industries and different enterprises have used power transmission gearbox, there are more and more enterprises in the power transmission gearbox industry development.

पॉवर ट्रांसमिशन गिअरबॉक्स

पॉवर ट्रांसमिशन गिअरबॉक्स

According to the modular design principle of unit structure, power transmission gearbox greatly reduces the types of parts, suitable for mass production and flexible selection.The spiral bevel gear and helical gear of the power transmission gearbox are carburized and quenched with high-quality alloy steel, the hardness of the tooth surface is up to 60±2HRC, and the grinding accuracy of the tooth surface is up to 5-6 grade.

Drive parts of the bearings are selected domestic famous brand bearings or imported bearings, seals choose skeleton oil seal;Sound absorption box body structure, large box surface area and large fan;Make the machine temperature rise, noise reduction, operation reliability is improved, the transmission power increases.Parallel shaft, straight shaft, vertical and horizontal universal box body can be realized. The input mode is motor connection flange and shaft input.Output shaft can be right Angle or horizontal output, with solid shaft and hollow shaft, flange

कार्बरायझिंग आणि शमन

Type I output shaft.The gearbox can meet the installation requirements of narrow space, and can also be supplied according to customer requirements.Its volume is 1/2 smaller than soft-tooth power transmission gearbox, its weight is halved, its service life is increased 3~4 times, and its bearing capacity is increased 8~10 times.Widely used in printing and packaging machinery, three-dimensional garage equipment, environmental protection machinery, transportation equipment, chemical equipment, metallurgy, mining equipment, steel and power equipment, mixing equipment, road construction machinery, sugar industry, wind power, escalator elevator drive, shipping areas, light industry, paper making, metallurgy industry, sewage treatment, building materials industry, lifting machinery, conveyor line, assembly line such as high power, large transmission ratio, high torque applications.With good cost performance, conducive to supporting the domestic equipment.

पॉवर ट्रांसमिशन गिअरबॉक्स

Effect of editing

The power transmission gearbox has the following functions:

1, acceleration and deceleration, is often said to be the transmission gearbox.

2. Change the transmission direction, for example, we can use two sector gears to transfer the force vertically to the other rotating shaft.

3. Change the rotation torque.Under the condition of the same power, the faster the speed of the gear, the smaller the shaft torque, and vice versa.

4. Clutch function: we can separate the engine from the load by separating two originally engaged gears.Such as the brake clutch and so on.

5. Distribute power.For example, we can use one engine to drive multiple slave shafts through the gearbox spindle, thus realizing the function of one engine to drive multiple loads.

पॉवर ट्रांसमिशन गिअरबॉक्स

The design editor

Compared with other industrial power transmission gearbox, because the wind power power transmission gearbox is installed in a narrow engine room tens of meters or even more than 100 meters high from the ground, its own volume and weight have an important impact on the engine room, tower, foundation, wind load of the unit, installation and maintenance costs, so it is particularly important to reduce the external size and weight.At the same time, due to inconvenient maintenance and high maintenance cost, the design life of power transmission gearbox is generally required to be 20 years, and the reliability requirements are extremely demanding.Due to the irreconcilable contradiction between size and weight and reliability, the design and manufacture of wind power gearbox is always in a dilemma.In the overall design stage, the transmission scheme should be compared and optimized with the aim of minimum volume and minimum weight on the premise of satisfying the requirements of reliability and working life.The structure design should be based on the premise of satisfying the transmission power and space limitation, and take into account the simple structure, reliable operation and convenient maintenance as far as possible.Ensure product quality at every step of the manufacturing process;During operation, the gearbox operating conditions (bearing temperature, vibration, oil temperature and quality change

पॉवर ट्रांसमिशन गिअरबॉक्सपॉवर ट्रांसमिशन गिअरबॉक्स

Carry out real-time monitoring and routine maintenance according to specifications.

As the blade tip linear speed cannot be too high, with the increase of the capacity of the single machine, the rated input speed of the power transmission gearbox gradually decreases, and the rated speed of the megawatt superior unit generally does not exceed 20r/min.On the other hand, the rated speed of the generator is generally 1500 or 1800r/min, so the speed ratio of large wind power growth power transmission gearbox is generally around 75 ~ 100.In order to reduce the volume of the gearbox, the wind power growth box above 500kw usually adopts the power shunt planetary transmission.The common structure of 500kw ~ 1000kw includes two forms: parallel shaft of grade 2 + planet of grade 1 and parallel shaft of grade 1 + planet of grade 2.The gearbox of megawatt grade adopts the structure of 2 parallel axes +1 planetary transmission.Because the structure of planetary transmission is relatively complex, and the processing of large inner gear ring is difficult and the cost is high, even if the two-stage planetary transmission is adopted, NW transmission is the most common form [1].

उत्पादन तंत्रज्ञान संपादक

The outer gear of wind power gearbox is usually carburized, quenched and grinded.High efficiency and high precision CNC gear grinding machine introduction, make

High precision CNC gear grinding machine

High precision CNC gear grinding machine

पॉवर ट्रांसमिशन गिअरबॉक्स

Our country outside gear finishing level and foreign countries do not have too big gap, reach 19073 standard and 6006 standard set 5 grade precision technical difficulty.However, there is still a gap between China and foreign advanced technology in heat treatment deformation control, effective layer depth control, tooth surface grinding tempering control, gear tooth modification technology and so on.

Due to the large size and high processing accuracy requirements of wind power power transmission gearbox gear ring, the manufacturing technology of inner gear ring in China lags far behind the international advanced level, which is mainly reflected in the aspects of gear making processing and heat treatment deformation control of internal helical gear.

The machining precision of box, planet frame, input shaft and other structural parts has a very important impact on the meshing quality and bearing life of gear transmission. The assembly quality also determines the life span and reliability of wind power power transmission gearbox.From the importance of the processing and assembling precision of the structural parts, we realize that the equipment level is far from the advanced level of foreign countries.The acquisition of high quality and high reliability wind power gearbox, in addition to advanced design technology and necessary manufacturing equipment support, cannot be separated from the strict quality control of every link in the manufacturing process.The 6006 standard has strict and detailed provisions on the quality assurance of power transmission gearbox [1].

Lubrication editor

The commonly used power transmission gearbox lubrication is gear oil lubrication, semi - fluid grease lubrication, solid lubricant lubrication

पॉवर ट्रांसमिशन गिअरबॉक्स

मोलिब्डेनम डायसल्फाईड

Several ways to slide.For better sealing, higher speed, large load, good sealing performance can be used gear oil lubrication;For poor sealing, low speed can use semi-fluid grease lubrication;Molybdenum disulfide superfine powder can be used for lubrication in oil forbidden or high temperature occasions.

The lubrication system of the power transmission gearbox is very important for the normal operation of the power transmission gearbox. The large wind power generation power transmission gearbox must be equipped with a reliable forced lubrication system to spray oil on the gear engagement area and bearing.Insufficient lubrication accounts for more than half of the gearbox failures.Lubricating oil temperature is related to component fatigue and the life of the whole system.Generally speaking, the maximum oil temperature of the power transmission gearbox in normal operation should not exceed 80℃, and the temperature difference between different bearings should not exceed 15℃.When the oil temperature is above 65℃, the cooling system starts to work.When the oil temperature is less than 10℃ to start, the lubricating oil should be first heated to a predetermined temperature before starting.

In summer, because the wind motor is in full firing state for a long time, plus direct sunlight at high altitude, the operating temperature of the oil rises beyond the set value.When used in the severe cold region of northeast China in winter, the lowest temperature often reaches below 30℃, the lubricating oil in the lubrication pipeline is not smooth, the gear and bearing are not fully lubricated, which causes the power transmission gearbox to stop at high temperature, the tooth surface and bearing wear, in addition, the low temperature will also make the power transmission gearbox oil viscosity increase, the oil pump starts with heavy load, the oil pump motor

पॉवर ट्रांसमिशन गिअरबॉक्स


power transmission gearbox lubricants have an optimal operating temperature range. It is recommended to design a lubricating oil thermal management system on the power transmission gearbox lubrication system: the cooling system starts to work when the temperature exceeds a certain value, and the heating system starts to work when the temperature is below a certain value, always keeping the temperature within the optimal range.In addition, improving the quality of lubricating oil is also an important aspect that the lubrication system must consider. Lubricant products must have excellent low temperature fluidity and high temperature stability, and the research on high-performance lubricating oil should be strengthened [2].

Bearing life

Statistics show that about 50% of the gearbox faults are related to bearing selection, manufacturing, lubrication or use.At present, due to reasons such as backward technology conditions, the core component of more than domestic megawatt units such as motor, gearbox, leaf, electronic control equipment and yaw system, etc., many of them rely on imports, and is applied in the large wind turbines is analyzed.studying the gearbox bearing, yaw bearing, bearing and spindle bearing is completely rely on imports.Therefore, a more accurate bearing life calculation method is particularly important for the design of wind power power transmission gearbox.

पॉवर ट्रांसमिशन गिअरबॉक्स

Wind power power transmission gearbox

Due to the high reliability of the bearing, the service life of the bearing should not be less than 130,000 hours.However, due to too many factors affecting the bearing fatigue life, the theory of bearing fatigue life still needs to be constantly improved. There is no unified calculation method accepted by all industries for the theory of bearing life at home and abroad.

Bearing operating temperature, lubricating oil viscosity and cleanliness, speed and other factors have a great impact on the life of the bearing. When the running state becomes worse (temperature rises, speed decreases, pollutants increase), the life of the bearing may be greatly reduced.In-depth analysis of various factors that affect the bearing life of wind power gearbox, and the study of a more accurate calculation method for bearing life are the top priority of the domestic bearing industry and even the wind power industry [3].

Use the editor

1. Acceleration and deceleration is often referred to as the transmission gearbox.

2. Change the transmission direction. For example, we use two sector gears to transfer the force vertically to the other rotating shaft.

3. Change the rotation torque. Under the same power condition, the gear with a faster speed will experience a smaller torque on the shaft, and vice versa.

Clutch function: we can separate the engine from the load by separating two originally engaged gears, such as the brake clutch.

5. Distribute power. For example, we can use one engine to drive multiple slave shafts through the gearbox spindle, thus realizing the function of one engine to drive multiple loads.

पॉवर ट्रांसमिशन गिअरबॉक्स

ध्वनी प्रक्रिया संपादक

power transmission gearbox is an important part widely used in mechanical transmission. When a pair of gears are meshing, due to the inevitable error of tooth pitch and tooth shape, there will be meshing impact in the process of operation and the noise corresponding to the meshing frequency of the gear, and friction noise will also occur between the tooth surface due to relative sliding.Because gear is the basic part of power transmission gearbox transmission, reducing gear noise is very necessary to control power transmission gearbox noise.Generally speaking, the causes of gear system noise mainly include the following aspects:

1. Gear design.Improper parameter selection, too small coincidence, improper or no modification of tooth profile, unreasonable structure of power transmission gearbox, etc.In gear processing, the error of base pitch and tooth profile is too large, the clearance of tooth side is too large, the surface roughness is too large.

2. Gear train and power transmission gearbox.Assembly eccentricity, low contact accuracy, poor parallelism of shaft, stiffness of shaft, bearing and support is insufficient, bearing rotation accuracy is not high and clearance is improper.

3. Input torque from other aspects.Fluctuation of load torque, torsional vibration of shafting, balance of motor and other transmission pairs, etc.

पॉवर ट्रांसमिशन गिअरबॉक्स

चेरी झांग (विक्री विभाग; मिस.)
एनईआर ग्रुप कंपनी, मर्यादित
यन्ताई बोनवे मॅन्युफॅक्चरर कंपनी, लि
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