“At the end of 2015, the cumulative sales of new energy vehicles in China will exceed 300,000 vehicles; by the end of next year, China will become the country with the largest number of new energy vehicles in the world.†The National 863 Energy Conservation and New Energy Vehicle Project Supervision Advisory Group Wang Binggang, the team leader, recently put forward the above points.
Wang Binggang said that under the government’s focus and policy guidance, new energy vehicles have made significant progress in 2014 and 2015. From January to October this year, 100,000 vehicles have been sold. From 2014 to 2015, it produced and sold more than 200,000 vehicles in less than two years.
By the end of 2015, the cumulative sales of new energy vehicles in China will exceed 300,000 vehicles, and will become the world’s largest country in terms of sales of new energy vehicles as in the United States. From the perspective of development momentum, China’s development momentum is even higher than that of the United States. In 2015, sales of new energy vehicles in China exceeded that of the US in the same period. By next year, China will become the world’s country with the largest cumulative sales of new energy vehicles.
It should be noted that new energy vehicles have entered a period of rapid development, and even if they have achieved substantial results, there are still some major problems in the current promotion of private energy vehicles for new energy vehicles:
I. The development of various promotion cities is not balanced, and the promotion of a few cities has made little progress.
Second, the infrastructure is seriously lagging behind, charging is difficult, and some plug-in vehicles have lower electricity rates.
Third, the lack of R&D investment, and the new energy of new energy vehicles are not balanced, yet they cannot meet the market demand.
Fourth, the development of the battery industry is lagging behind, and R&D forces are scattered.
V. The problem of local protection is ubiquitous and affects the promotion of work and the healthy development of the industry.
In addition, there are several issues that we are more concerned about:
First, promotion work should be released to the whole country from next year. At this stage, there is no way that the enthusiasm of the local government cannot be achieved.
Second, the impact of the adjustment of subsidy policy on promotion work and industry guidance. The state has introduced a subsidy policy, and the local subsidy policy is very worthy of study. There is no subsidy for new energy vehicles now. Excessive subsidies will not work, and will be cancelled sooner or later. In the future, there will be many subsidy policies for new energy vehicles, such as cancellation of restrictions on travel and other policies, which will promote new energy development. The period from 2016 to 2020 is a transition period. It is very important how the subsidy policy is implemented after the transition period.
Third, with the passage of time, battery performance and quality are mixed. How to deal with the impending deterioration of battery performance, warranty, maintenance, and complaints. All businesses and government departments must make some preparations for this.
Fourth, as soon as the work of the battery scrapping and recycling of batteries is started, it should be laid out as soon as possible.
Fifth, we must eliminate security risks and reduce fire accidents.
The analysis of the power field of new energy automotive industry, how to maintain a large driving force to solve the resistance of the promotion work, to solve these problems so that new energy vehicles continue to move forward, has been pushed to the track of rapid growth, there is much work to be done here.
Finally, Wang Binggang proposes that: at the end of this year and early next year, carry out the scientific evaluation of the promotion effect of new energy vehicles, sum up experience, improve work, and provide a better basis for the work of the next five years.
The Tapered Roller Bearing belongs to the separation type bearing, and the inner and outer rings of the bearing have a conical raceway. This type of bearing is divided into single, double and four row Tapered Roller bearing according to the number of the roller. The single row tapered Roller Bearing can bear the radial load and the single direction axial load. When a bearing is subjected to a radial load, an axial force will be produced, so another bearing that can withstand the axial force of the opposite direction is needed to balance it.
There is a single row tapered roller bearing outer ring, the inner ring and a conical roller by maintaining a basket frame into the inner module. The outer ring can be separated from the inner ring assembly. According to the standard of the ISO tapered roller bearing dimension, any standard type tapered roller bearing outer ring or inner ring assembly should be able to achieve international interchangeability with the same type of outer ring or inner ring assembly. For example, the outer ring of the same type should conform to the ISO492 (GB307) rule besides the external dimension and tolerance. The conical angle of the inner ring assembly and the diameter of the component cone must also comply with the relevant provisions of the interchangeability.
Usually, the conical angle of the outer raceway of the single row tapered roller bearing is between 10 degrees ~19 degrees, and it can simultaneously bear the joint action of axial load and radial load. The larger the cone angle, the greater the ability to bear the axial load. The bearing of the big cone angle, the postposition code plus the B, the cone angle between 25 degrees ~29 degrees, can bear a large axial load. In addition, the single row tapered roller bearing can adjust the size of the clearance during the installation process.
The outer ring (or inner ring) of a double row tapered roller bearing is a whole. The two inner ring (or outer ring) has similar small end faces, and the middle has a spacer. The clearance is adjusted by the thickness of the spacer, and the pre interference of double row tapered roller bearings can also be adjusted by the thickness of the spacer.
The performance of the four row tapered roller bearing is basically the same as that of the double row tapered roller bearing, but the radial load of the double row tapered roller bearing is greater than that of the double row tapered roller bearing, and the limit speed is slightly lower, which is mainly used for heavy machinery.
Multi seal double, four row tapered roller bearings, ZWZ provides long life, multi seal double, four row tapered roller bearings. The new design of the bearing is personalized and the traditional design method of the fully sealed bearing is changed. A new seal structure combined with seal and dust-proof is adopted to improve the sealing effect and improve the sealing performance. Compared with open structure bearings, the life of multi seal double and four row tapered roller bearings increased by 20% to 40%, and the consumption of lubricants was reduced by 80%.
Tapered roller bearings are widely used in automobile, rolling mill, mine, metallurgy, plastic machinery and other industries.
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