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Warm congratulations on the launch of the revamped website of Taiwan Da Fa Spring Industry Co., Ltd!

Warm congratulations on the launch of the revamped website of Taiwan Da Fa Spring Industry Co., Ltd!

Dawn Heavy Industries leads the development of domestic spring cone crushers.

The world's first patent for a cone crusher was published in 1878, and it wasn't until 1898 that a product was made. The United States began using cone crushers at the end of the 19th century. The spring cone crusher was designed by the Simmons brothers from Milwaukee, USA, hence it is named the Simmons cone crusher. This machine has a history of about a hundred years; although it has gradually improved and its structure has become more refined, the basic structure has not undergone significant changes. In 1954, China designed and produced the 1200 spring cone crusher based on the Soviet Union's 2100 and 1650 spring cone crushers. In 1958, a large 2200 spring cone crusher was also designed and manufactured. After years of repeated research and practice, the old series of spring cone crushers overcame issues such as insufficient spring pressure, low component strength, and certain structural flaws. Currently, the mass-produced spring cone crushers come in five specifications: 600, 900, 1200, 1750, and 2200, with 14 different cavities. Compared to similar crushers from advanced countries, domestic spring cone crushers still have gaps in quality and performance. To catch up with the world's advanced level, domestic heavy machinery factories have introduced the Simmons and rotary cone crusher technology from the American Nordberg company and collaborated to manufacture this series of cone crushers. The basic parameters specified by the new standards for cone crushers are also comparable to those of the Simmons cone crusher. Therefore, the spring cone crushers produced domestically in the future will essentially be Simmons crushers, and older products will gradually be phased out. The Simmons cone crusher developed and manufactured by Dawn Heavy Industry is based on the introduction and absorption of foreign technology, designed and developed according to customer needs, and based on the principles of laminated crushing and the concept of more crushing and less grinding. It integrates high swing frequency, optimized cavity shape, and reasonable stroke into a modern high-performance spring cone crusher. Practice has proven that the CS series high-efficiency spring cone crusher, with its excellent performance, reliable quality, and high cost-effectiveness, has won the trust of users worldwide and is an ideal substitute for traditional cone crushers. Dawn Heavy Industry leads the development of domestic spring cone crushers with its own brand, technology, and strength.

Chinese and foreign spring companies gather in Dongguan to exchange new technologies.

Yesterday, the opening ceremony of the 2011 National Spring Industry New Products, New Technologies, and Technology Information Exchange and Exhibition was held for the first time in Dongguan, where dozens of domestic and foreign spring manufacturing companies gathered to exchange new technologies. The exhibition was jointly organized by the National Spring Standardization Technical Committee, the General Parts Product Quality Supervision and Inspection Center of the Machinery Industry, and other institutions. Well-known spring manufacturing companies and experts from Italy, Japan, and Taiwan participated in the conference. A representative from a spring manufacturing company in Dongguan stated that there are currently dozens of spring manufacturing companies in Dongguan, but the overall technical level is not high. Many companies survive by competing on price, and those that want to grow need to improve their technical capabilities. The exhibition serves as a great platform for technical exchange and learning.

Points to note before using a spring scale

1. Observe the measuring range, as shown in Figure 1, the range of the spring scale is 5N. Before use, estimate the size of the force to be measured; the force being measured must not exceed the range of the spring scale, otherwise, it may damage the spring scale. 2. Observe the scale value of the spring scale, which is the value represented between the two smallest graduations. Understanding the size of the scale value is beneficial for accurate reading. As shown in Figure 1, the scale value of the spring scale is 0.2N. 3. Check if the pointer is pointing at the zero graduation line. If it is not, it should be zeroed; otherwise, the measurement results will be inaccurate. As shown in Figure 2(d), when no force is applied, the pointer is below the zero graduation value, and when reading the measurement after use, a portion of the value above the pointer will be included, leading to an overestimated measurement result. 4. Before using the spring scale, gently pull the hook back and forth a few times to check if the spring is in contact with the casing, if there is any friction, or if there are any signs of stiffness.

Air suspension: springs installed on the wheels.

Air suspension maintains the same structure as traditional suspension, consisting of two main components: springs and shock absorbers. The difference is that the springs in air suspension are filled with high-pressure air, allowing the stiffness of the springs to vary according to different needs; the damping of the shock absorbers is also adjustable rather than fixed. In other words, the biggest difference between air suspension and traditional suspension is that the characteristics of the suspension are variable, such as height and stiffness, which can be adjusted based on different road conditions. As a result, users have a lot of options when it comes to setting suspension characteristics. Vehicles equipped with air suspension typically offer several modes: automatic, comfort, normal, and sport, allowing users to choose different modes based on road conditions and personal preferences. In automatic mode, the onboard computer adjusts the height of the chassis and the stiffness of the suspension based on vehicle speed and various dynamic parameters. For example, at high speeds, the chassis will automatically lower, and during aggressive driving, the suspension will become stiffer. However, the computer's calculations may not always be accurate, and its response may not be very proactive, which is why there are other modes to choose from. In comfort mode, the chassis is adjusted to the highest position, and the suspension becomes the softest, making it suitable for driving on bumpy roads and greatly improving driving comfort. However, if aggressive driving occurs in this mode, the vehicle will sway significantly, and the limits are relatively low. In normal mode, the height of the chassis and the stiffness of the suspension are at a medium level, suitable for well-paved roads. In sport mode, the chassis is set to the lowest position, and the suspension becomes the hardest, suitable for aggressive driving, although comfort is compromised compared to the previous two modes. From our experience, except for sport mode, the height of the chassis can be manually adjusted in other modes to improve the vehicle's passability, which is very user-friendly. The emergence of air suspension gives a vehicle multiple personalities and greatly enhances its adaptability to different road conditions, making it a beneficial feature for users. Due to the precision of air suspension technology, it is relatively expensive, and maintenance costs are also higher. Air suspension is mostly equipped on luxury models, such as the Mercedes-Benz S-Class, Porsche Cayenne, Audi Q7, etc. However, with the popularization of technology and the reduction of costs, this feature is now trending downwards, with some luxury brand models now available at around 500,000 yuan.

How to maintain a spring mattress

As long as used properly, high-quality spring mattresses are generally sturdy and durable, and can last for a long time. However, attention should be paid during use: 1. Avoid excessive deformation of the mattress during transportation. Do not bend or fold the mattress, and do not tie it tightly with ropes. 2. Do not allow excessive localized pressure on the mattress. Avoid standing on the mattress for long periods or letting children jump on it to prevent localized compression that can cause fatigue deformation and affect elasticity. 3. Do not sit on the edge of the mattress for extended periods. 4. Regularly flip the mattress for use; it can be flipped upside down or rotated end to end. Generally, it should be changed every three months in a typical household. 5. In addition to using bed sheets, it is best to cover the mattress with a mattress protector to avoid soiling. Alternatively, choose a mattress with a removable cover for easy cleaning. 6. Remove the plastic packaging when using the mattress to maintain ventilation and avoid moisture. Do not expose the mattress to direct sunlight for too long. 7. For spring mattresses, place a cotton mat or blanket at the contact points with the bed frame to reduce friction and extend its lifespan. 8. A full coconut mattress should be supported by a wooden board or similar, and should not be placed in mid-air.