Ljetne gume

Površina ljetne gume je ravnija u odnosu na šaru zimskih guma, a i struktura same gume je takva da štiti gumu od visokih temperatura. Kada prosječna vanjska temperatura prelazi 7 stepeni, preporučljiva je uporaba ljetnih guma.

Gume za gospodarske mašine

Razlikujemo pune i šuplje pneumatike, u zavisnosti da li vertikalno opterećenje gume apsorbuje guma ili vazduh. Po vrsti primjene postoje pneumatici za utovarivače i za male radne mašine(bobcat).

PR(ply rating) vrijednost.

Određuje stepen mogućnosti opterećenja pneumatika. Što je PR vrijednost veća, guma je otpornija na spoljne utjecaje. U slučaju teških terena ili zahtjevnih uslova eksploatacije preporučljivo je kupiti gume sa većom PR vrijednosti.

Struktura gume

Po strukturi razlikujemo dvije vrste guma.

Dijagonalne gume su takva vrsta guma, gdje kordovi zatvaraju ugao od 45 stepeni u odnosu na rub gume. Između gazećeg sloja i bočnice pneumatika nalaze se jastučasti ulošci koji su napravljeni od rjeđih vlakana, formirajući prijelaz između bočnice i gazećeg sloja.

Kod radijalnih pneumatika se ove dvije funkcije razdvajaju i optimizirana je konfiguracija vlakana na radijalne sile. U slučaju radijalnih pneumatika kordovi su vertikalni u odnosu na uzdužnu osu pneumatika pa samim tim trpe dva puta veća opterećenja u poređenju sa dijagonalnim pneumaticima. Kord radijalnih penumatika se sastoji od upola manjeg broja vlakana nego kod dijagonalnih što proističe iz pravca primjene. Zid pneumatika je tanji, što doprinosi bržem hlađenju pneumatika kao i većoj otpornosti uticaju centrifugalne sile nastale pri velikim brzinama. Zahvaljujući krućoj strukturi, bolje je prianjanje na kolovoz. Takođe je smanjena pokretljivost gazećeg sloja što smanjuje otpor pri rotaciji. Prilikom nailaska na kamen, nastaju veća opterećenja na rastezanje, što doprinosi razdvajanju ili cijepanju slojeva pneumatika; radijalni pneumatici brže propadaju na neravnom kolovozu (kaldrmi) nego dijagonalni pneumatici.

Oznaka strukture pneumatika. Oznaka R označava radijalni pneumatik. Ostale mogućnosti: ukoliko je oznaka samo srednja crta (-) ili slovo D, to označava dijagonalni pneumatik.

Double Star was founded in 1921, is China's first state-owned shoe companies. Here on behalf of the 60,000 employees of the Double Star Group, and in my own name to have been understanding, care, support the development of leaders at all levels of the Double Star brand, to express my most sincere gratitude to friends from all walks of life.

The binary development experience of China's planned economy, reform and opening up, the three stages of the market economy. The early 1980s, the Double Star first boldness and courage to "take the lead" into the sea, the very best in the restricted area, boldly learn the traditional culture of Confucianism, Taoism and Buddhism "for the modern enterprise management, adhere to the" market is the enterprise The top leadership ", the rise of competition in the market to take off in the market competition.

Binary market-oriented, brand strategy, human resources strategy, technology strategy, Lands and technology, management, science and technology, technology Technology to strengthen the management of funds, lower fees as the main line to the production and operation of the strategic adjustment measures, "hostage, security and quality" in order to ensure the successful completion of the whole process of state-owned enterprises from a planned economy to a market economy, a record of the largest traditional manufacturing and processing industries, first-class management, first-class quality of large enterprises Group.

Binary star who always "live up to expectations of the Chinese nation, the faith of winning glory for the Chinese people" for the spirit to "put up their own when their own backbone, feel good about themselves" excellent "inheriting tradition, learn from foreign advanced, creating its own characteristics as the driving force, summed to create a science, in line with the market economy, proven with Chinese characteristics "ABW theory". We advocate that the "markets such as the battlefield," and demanded that "full transition to a market, everyone involved in the competition"; we are adhering to the "Man Hing factory the management people-oriented"; we propose "following the market around the market, with the We adhere to the "enterprise what can reform the market change";, only quality can not reform "; we firmly believe that" the market is not terminated, brand name without lifelong management without a full stop ".

Binary people has always been a brand name in the market economy, the largest political foothold; "good use of money is the best ideological and political work" as a breakthrough; new ways to "do a good quality of products is the greatest good turn deserves another" , has completed a strategic shift out of the city, the mountains, the countryside "to complete a car gives shoemaking to" make shoes ", and then expand to the mechanical cross-sectoral transfer, and build a new framework of the" Double Star ". "Double Star top fashion shoes", "Double Star color tire", "Double Star quad-mode vulcanizing machine" a large number of the world's leading binary unique new products on the world stage to show the strength of the Chinese national enterprises.

Double Star, created a national industry in China one after another miracle out of a state-owned enterprise market road to success. Of the Tenth National People's Congress Standing Committee Xu Jialu, vice chairman of evaluation: Double Star to me more than once shocked and inspired a star of the binary, is dedicated to the Chinese people, the people of the world's outstanding products, another star to the construction of socialism in our dedicated to the Chinese people, new culture process, the Star of the modern oriental culture of the peoples of the world, a microcosm of the history of binary stars is also China's national industrial history, the ambition of the Chinese people, the Chinese people's wisdom in binary fully demonstrated.

Opportunities and challenges in the new era, Double Star will continue to be "objective thought, creation science, seriously do pragmatically dry, happily too cool to live" pragmatic attitude, to provide consumers with more colorful products to make your life more personalized, more stylish, more exciting. Wish all my friends "wear a double star, chic life"!

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