Development of air springs from fabric to single cord skeleton structure
The spring, that is, 1 has its advantages, the load distribution is optimal, and the ride comfort is improved; the inch road damage is small, providing smooth transportation conditions for fine and fragile goods transportation, reducing the maintenance of the vehicle maintenance, and passing the vehicle suspension system. The electric record device provides 1 security.
With air suspension, reduced system costs and improved technology, air springs are likely to be used in cars such as Mercedes-Benz's new Type 5 premium cars.
1 Air spring definition and use 1.1 Physical principle The working principle of the air suspension system is that when the force acts on the spring, just like any other spring, the gas in the air spring is compressed and generates a reaction force. It has been a long time since the deep burial of this principle. And the modern energy of this kind of spring, in the air Fu spring, the volume of the body is changed, the advantage of the corrugated airbag is the simple method of sealing the external atmosphere of the volume change gas history gas. .
The characteristics of traditional steel springs cannot be changed while in use, while the air spring suspension system can change the gas pressure and automatically adapt to different load conditions. The characteristics of the air spring can be kept constant, independent of the load and independent of the load. This point has a special meaning for the load change or the vehicle with a large difference in mass between the load and the unloading conditions. 1.2 Train air spring ride Very comfortable 12-star new high, the fire is based on the latest technology air suspension system. In Ding 0, the French high-speed train has set a new standard for train ride comfort, and part of it is the use of new air springs in the suspension system.
1.3 Air springs for buses The air springs are widely used as buses for load-adjustable suspension components. This provides an ideal for modernization and advancement to meet the requirements of comfort, safety and safety. With the inclusion, almost all coaches today are equipped with air springs. In addition to improved ride comfort, the air spring suspension also allows the vehicle chassis to rise and lower to make the bus more convenient to the station, and the 1.4-load truck uses air springs to set the juice in the modern load. The air suspension system point is very obvious. The steel spring suspension system can not easily reduce the shock absorption and the comfort of operation, and can deal with the great difference in quality. The air spring can safely transport the fragile goods and greatly reduce the wear of the vehicles and the road. On the other hand, the new 1-cabin suspension system based on the air-free spring-based bath or the non-bathing liquid-reducing device group is heavy. 1 machine improved 15 car air springs in the car horizontal control system, air springs are often combined with shock absorbers. The main purpose of horizontal control is to keep the car in the design position regardless of the load. The air spring can be used as a suspension system in the design of the vehicle with the latest technology electronically controlled air spring device on the front and rear axles. The superiority is that the height is constant and independent of the loading conditions, regardless of the load. The best performance, with aerodynamic compensation, safe driving conditions, comfortable, improved, low noise, no need to adjust the headlights when the load is running.
1.6 Other technical applications Single corrugated stabilizer cabinet 1 is mainly used as a vibration-proof component of the machine to prevent structural noise vibration and shock. The machine runs quieter on the air cushion; in most factories, vibrations and shocks from machines, especially heavy or speed equipment, can cause serious problems. The accuracy of the measuring equipment and the operation of other machines, especially high-precision machines, can be deeply affected by vibrations and impacts, such as the vibration-generating equipment installed on the air springs, so that it is not necessary to invest in the construction of the fire. The basis or transformation of other structures. Therefore, air springs can be seen in a variety of machine designs. Air spring corrugated airbags can be used to support the lifting and tilting of the support line of machines that vibrate or oscillate. It also ensures the flat running of the textile machine. 2 Technical details of the air spring 21 General The wall of the air spring is covered by several layers of high-grade elastomer material. The frame material is composed of an elastic inner layer to seal the bellows, making it airtight. The outer layer protects the skeleton material from mechanical and harmful fibers such as oil gasoline and detergent can be used as the skeleton material. The most common skeleton materials include cord fabrics consisting of tight warp threads and sparsely dropped threads. The two layers of cord fabric are covered in the wall of the air spring elastomer cylinder at a specific angle, and the ends of the fabric are wrapped around the bead ring to form a connection to the steel sheets. The characteristics of the yellowing are preserved under different load conditions.
2.2 Before the textile skeleton material is vulcanized, the textile skeleton material is covered in the wall of the bellows tube to absorb the force generated by the internal pressure of the air spring.
General 1 cross-twisted polyamide yarn 2, strong elastomer material. The most commonly used skeleton materials include two cross-layered Snapdragon 66 cord fabrics, which are characterized by the following properties: Elasticity, ease of processing, chemical compatibility, impregnated fabrics, good adhesion to rubber compounds, water resistance Solution to ammonia hydrolysis chemical resistance, high wear resistance, fatigue and high strength.
2.3 air-lacquered cords and fabrics for storage and transportation of air and corrugated corrugated upper and lower travellers. The corrugated battalion is tightly pressed by the steel plate in order to achieve the required quality standards. There are two points of the force control valve that are firmly fixed to the air spring of the mounting surface. Pay attention to the item to be handled by the treated fabric + the hand touch storage time h 1 Exposure to daylight; 2 unpacking and storage; 3 when wrapped in a black bag, the glue rate is 100 or the yarn is broken. The test should only be done by experts in the field, because the rubber from the user is very different. Companies also often develop financial institutions in their laboratories for the development of new compounds for their users. Hey.
After no stains. The immersion liquid on the fabric should be dried and heat set in a special oven. 4. At the same time, the physical characteristics of the fabric, such as heat shrinkage and extension force, should be adjusted to meet the requirements of the user's technical specifications. The rubber compound should be suitable for the temperature application range of 40700. Therefore, the typical yarn structure is 94.1 parent 252500500, which is passed on the finishing machine of 4, only the latex is impregnated. Although the textile reinforcing material of the air spring is based on the fabric, they are a new development, especially for the high-class sedan. The development of high-performance suspension systems has emerged that must be protected based on the single curtain touch when transporting and storing air spring cords. Avoid illumination to avoid humidity and temperature changes to avoid air oxidation to ensure proper bond quality. 3 is the result of improper handling of the cord.
3 The fabric of air spring fabric is made of nylon 66. The specifications are 235, 470, 940 or 14001佟N, å®Vã–, reading 矶, æµ… indeed shallow 80% S æŽè¯³ palm, lemon 倜, èŸ é”¸, Ten thousand times of load, Zhou Lang, so the point is that the waves at the sand line are extremely careful. To ensure that their physical properties are exactly the same throughout the length. Of course, this is also the case for fabrics produced by yarns. In particular, the warp threads must remain parallel throughout the fabric. This is crucial for the weft, because the collapse will give the fabric a bond to the rubber. The adhesive requirements are very simple in the air test of the adhesion test storage device dipping segment line structure. The design features the following advantages: the mandrel has no intersection through the root cord and has better activity, so the service life is longer and the comfort is improved; the post-vulcanization stabilizer is only 258 successfully developed by Shanxi Bamboo Chemical Research Institute. After the success of the auxiliary plant, the vulcanization stabilizer will be 258. The post-vulcanization stabilizer will be used to remove or reduce the disadvantages caused by vulcanization and reversion. It is also suitable for high-temperature vulcanization, and the vulcanized rubber has excellent heat-resistant oxygen aging properties; at the same time, the post-vulcanization stabilizer book 258 is also an adhesion promoter, which can improve the adhesion of the copper-plated steel wire and the strong material to the rubber. In addition, the post-vulcanization stabilizer 1258 can improve the dynamic viscoelastic properties of the base rubber; the post-vulcanization stabilizer 258 is suitable for the general vulcanization system and the semi-effective vulcanization system of the olefin rubber compound, and can be used for the tire thick product and heat resistance. The product was used in an amount of 1.53.0 parts. Adding a post-vulcanization stabilizer, the 258 product not only has excellent resistance to reversion, but also can resist high tear resistance and dynamic fatigue resistance.
Fan Yunfeng from Shanxi Institute of Chemical Industry for Taoning Corning held a China Business Dialogue and Industry Technology Exchange Conference in Beijing. At the end of 1999, Dow Corning Corporation held a 7-to-1 victory in the 21st century strategy mediation and innovation in Beijing for small Chinese business dialogue and industry. Technical Seminar. More than 300 government and business representatives attended the event. The meeting held a lively discussion and designated speech on how to look at the battles and opportunities and how to face new challenges (1); and in the rubber automotive industry, the textile personal care industry and the building materials industry. The questions that everyone cares about are discussed separately.
Li Jingping, editor of the journal, supplies a small loss of strength during the service life.
The quality requirements of a single cord are even higher than those of a fabric that is already high. The standard procedure requires that each spool be produced under the control of an online digital image processing system. Translated from the UK, such as 16 Ding 6, the fully automatic flat vulcanizing unit was successfully developed by Qingdao Yadong Rubber Machinery Group. Recently, I have passed the identification of scientific and technological achievements organized by the Island Science and Technology Commission. The result is a fully automatic double-launched self-opening flat vulcanizing unit. The electromechanical equipment is controlled by a computer and controlled by a machine. The main part is composed of a plurality of single bodies, and the hydraulic system is centrally supplied with oil by the energy storage device, and has the characteristics of flexible operation, reliable temperature difference of the hot plate, low automation degree and high production efficiency. Coffee program storage data storage temperature conversion control. Various functions such as vulcanization timing vulcanization counting and automatic exhausting push mode. The vulcanizing unit is suitable for batch vulcanization of various rubber model products and thermosetting plastic products, and is an ideal equipment for the rubber and plastic products industry to replace imports.
Extracted from China Chemical Industry, 19991025 Yuehua 888 high oil-filled thermoplastic elastomer passed the identification. Recently, 803383 high oil-filled thermoplastic elastomer developed by Hunan Yueyang Petrochemical Complex Synthetic Rubber Factory passed the national-level achievement appraisal. In response to the shortcomings of the domestic 383 products, the oil absorption rate is low and the oil absorption rate is slow. Yuehua Synthetic Rubber Factory Khan issued 80386 Yunyou Hot Island 4 Elastomer, which was put into production in September 1998. The 80356 high-oil rubber not only has high oil absorption. The rate of oil absorption is fast, and the tensile strength and hardness are higher than similar products, which can meet different market demands. Has good economic and social benefits. Experts believe that this product is not only widely used in the modification of shoe asphalt, but also in the production process, adding new sources of pollution and pollutants. The discharged pollutants all meet the discharge standards after being treated by existing equipment, which meets environmental protection requirements.
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