September 26-28 days，Sponsored by Road Construction and Maintenance Machinery Branch of China Construction Machinery Industry Association、Zhuhai Shigaoma Machinery Equipment Co., Ltd.（Hereinafter referred to as Shigaoma Company）Undertaken“Seminar on Oscillating Stirring Technology”Successfully held in Zhuhai。The meeting was held “Explore advanced mixing technology、Improve the development level of the whole machine” As the theme，The purpose is to promote the development of new mixing technology of asphalt mixture.，Promote the overall technical progress of asphalt mixing plant in China。Honorary President of China Construction Machinery Industry Association、Qi Jun, special adviser，Jiao Shengjie, President of Road Construction and Maintenance Machinery Branch of China Construction Machinery Industry Association、Secretary General Zhang Xinong，Li Taijie, Professor of Chang'an University，Xi Junfeng, General Manager of Shigaoma Company，Deputy Director of Road Construction Machinery Test Center of Chang'an University、Professor Xie Liyang，Zhang Wanhua, chairman of Lanzhou Jiahui Machinery Manufacturing Co., Ltd., attended the meeting.。Representatives from major enterprises and media at home and abroad attended the meeting.，The meeting was chaired by Zhang Xinong.。

Qi Jun

In his speech, Qi Jun introduced the overall situation of China's construction machinery industry in the first eight months.。He pointed out，2024 1-In August, 12 key enterprises counted by the association achieved revenue of more than 300 billion yuan.，Year-on-year decline of 0.56%，The profit is about 21.4 billion yuan.，Year-on-year growth of 8.84%，The 12 major products counted by the association in the previous August, except for individual products, declined year-on-year.，Overall recovery of about 4.4%，Indicating that the industry is bottoming out。

2024 1-In August, China's import and export trade volume of construction machinery was 364.$0.3 billion，Year-on-year growth of 4.55%。Of which, the import amount is 17.$5.1 billion，Year-on-year decrease of 0.14%;Export amount 346.$5.3 billion，Year-on-year growth of 4.8%。Calculated on the basis of exports denominated in RMB，The export volume in August was 316.0.8 billion yuan，Year-on-year growth of 8.98%。1-The export volume in August was 2463.3.3 billion yuan，Year-on-year growth of 7.38%。

Qi Jun stressed，Road Construction and Maintenance Machinery Branch has done a lot of fruitful work in the service industry and enterprises.，It has also been affirmed by the association many times.。Through this meeting, we visited Shigaoma on the spot.，It will vibrate.、The unreserved demonstration of oscillatory stirring technology is highly affirmed.。

Chi Junfeng

Xi Junfeng introduced in his speech.，The company has been established for more than 20 years.，Through the introduction of Italian technology，Digestion、 Absorption ，Committed to the production of concrete mixing equipment、R & D and technological innovation，Created double horizontal shaft mixer and vertical shaft planetary mixer sales first in the country.，More than 200 patented technologies have been obtained successively.。In recent years，The company is constantly developing new products.，Product range covers concrete、Asphalt、Stabilized soil、Mortar、Dry mortar、Lightweight concrete、Solid/Liquid industrial waste treatment、 Ceramics /Artificial stone、Mine backfilling and many other fields，There are nearly 100 types of mixers and supporting products.。

In recent years，In order to effectively improve the mixing efficiency and quality of asphalt，With more than 20 years of accumulation and precipitation of mixing technology, Shigaoma Company，And under the guidance and support of senior experts in the industry，An oscillating asphalt mixer has been successfully developed.，Can achieve the effect of more uniform coating of the special-shaped particle asphalt，But also can reduce that use amount of the asphalt.、And that stir period is shortened、And that construction cost is reduce。

I believe that through this seminar,，It will help Lishi Gaoma Company to continuously hone its internal strength.、Pioneering and innovative，Strive to provide customers with more reliable quality、The category is more complete、Products with better service。

Jiao Shengjie

Jiao Shengjie did it《Asphalt Mixture Mixing Technology and Its Development Prospect》 The report of。The report is based on the development background of asphalt mixing technology.、Literature、Patents and other major research directions are analyzed.。He pointed out，At present, there are about 1..40,000 sets of asphalt mixture mixing equipment of different types，Among，95%All of the above are intermittent.，Time of use 1~About 32% in 5 years%，6~About 47% in 10 years%，About 21% for 11 years and above%，The production scale and quantity of mixing equipment rank first in the world.，The technical level is equivalent to that of foreign brands.。And“Fourteen five”In the planning, a clear goal is put forward for the utilization of old asphalt materials.：Recycling rate of asphalt pavement materials for expressways 95%，General National and Provincial Highway 80%。Some economically developed cities require expressways 100%，General Provincial Highway 95%Above。The task of efficient resource utilization of bulk waste asphalt mixture is very arduous.，This also provides an opportunity for the development and application of new equipment.。And from the present vibration、From the form of shaking and stirring，The utilization rate of patent conversion is still low。

Li Taijie

Li Taijie did it《Research on Asphalt Mixture Oscillating Mixing Technology》The report of。The report States，Vibration mixing technology is based on the traditional mixing.，Add 1 low amplitude to the mixing blade、High frequency fluctuation，Thereby improving the mixing quality.。At present, there are mainly shaft end rotation methods.、Shaft end translation method、Free vibration method and two-axis pendulum array method。The vibration of the whole machine is serious and the transmission parts are easy to be damaged in the vibration mixing, especially in the rotary shaft end.，The reason is that the rotation of the mixing shaft leaves the center.，Cause high frequency displacement of that mass cent of the stirring system，At the same time, the transmission parts are easy to be damaged.。So，Drawing lessons from the principle of oscillating structure of oscillating roller，It is found that it can completely meet the needs of shaking and stirring.，And that stir axis does not deviate from the central position in the oscillation proces.。

Issued by Xi'an Changda Highway Engineering Inspection Center《Performance Test Report of Oscillating Mixing Asphalt Mixture》As can be seen in，SMA-13 Freeze-thaw splitting test results of fine-grained asphalt concrete from water stability、Several key performance indexes of low temperature crack resistance meet the requirements of specifications.。

Zhang Wanhua

Practice is the only criterion for testing truth.。Lanzhou Jiahui Machinery Manufacturing Co., Ltd. is the pioneer of oscillatory mixing technology.，Zhang Wanhua made it from the perspective of users.《Application of Oscillating Mixing Technology in the Construction of Lanzhou-Yongzhou-Linyi Expressway》The report of。1 set of Skoma 2 is used on site.m³An oscillating mixer，ForCVibratory mixing test for 50 concrete，And rightCThe performance of 50 concrete was evaluated.，In raw material batches、Mix proportion、Forming and curing method、Under the same test method，Taking the stirring forming process as a single variable，Parallel settingCThree Different Mixing Processes of 50 Ordinary Concrete：Roup 1 conventional agitation 50s；Group 2 Conventional Stirring 25sAfter the synchronous oscillation is turned on 25s；Group 3 Conventional Stirring 15sTurn on the synchronous oscillation after 35s。The test results，Oscillating mixer is helpful to improve the mechanical properties of some concrete when the appropriate oscillation parameters are selected，Imultaneously has beneficial effect on that fresh mixing performance and the durability of the concrete.；When the oscillating mixer is used to mix the concrete，Certain tests may be considered，Properly reduce the amount of glue material or reduce the stirring time。However, it should be noted that，Prevent excessive oscillation，In 1 mixing cycle, it is recommended to be after 25sAdd oscillation，Mixing works best.；And aft 25sAdding oscillation has no effect on material metering。

He Qianya

He Jianya, the chief engineer of Shigaoma Company, made it.《Development of Scolmar Oscillating Mixer》The report of。The report is based on the research and development background of the company's oscillatory stirring technology.、Oscillating asphalt mixer and test method are introduced.，It is believed that the advantage of oscillatory mixing technology is that it can improve the micro-level of the mixture and develop in a good way.。In addition，Simultaneous action of oscillation and stirring，Can reduce mixing time，Improve efficiency。Characterized by low power、Low-frequency oscillation loading on the mixer is not destructive and harmful to the equipment and surrounding facilities.，The agitation function can be facilitate。

Developed by SkomaAM-Z The oscillating asphalt mixer adopts the oscillating mixing mode.，It not only contributes to the uniform adhesion of asphalt on the surface of stones,，O that the asphalt coating is more uniform，But also can reduce that consumption of asphalt.，And that cost is effectively reduce；Vibrating concrete mixer can be reduced by 5%The amount of cement used，And that strength of the concrete is enhance，Energy saving and environmental protection。

Same period of the meeting，Delegates at the meeting visited the company.、Zhuhai Huigao Machinery Equipment Co., Ltd. and Zhuhai Pegasus Transmission Machinery Co., Ltd.。

Zhang Xinong presided over the meeting

The torch is handed down from generation to generation，Win-win competition and cooperation。Promoting Product Technology Upgrading by Scientific and Technological Innovation，Glow the new momentum of the industry，Cultivate new quality productivity，Promote high-end、Intelligent、Green development，It has become an important driving force in China's road construction and maintenance machinery industry.。I believe that through this time“Seminar on Oscillating Stirring Technology”The convening of，It can promote the improvement of mixing technology in the industry.，The technology of oscillatory mixing is closely combined with the actual needs of the whole machine manufacturing enterprises.，Strengthen cooperation with a more open attitude，Jointly write a new chapter in the cause of mixing。