First, elementary schools are generally 200 meters runway
The radius of the curve is 16.7 meters, and the length of the straight section is 46.8 meters. There are 4 tracks. The minimum lane width is 1.22 meters and the maximum is 1.25 meters. The lane width is 5 centimeters. All lane widths should be the same.
Second, secondary schools are generally 400 standard runways
The total length of 400 meters, the curve of the runway is semi-circular, and the innermost radius is 36 meters, each runway is 1.2 meters wide, there are 8 runways. Known standard runway length of 400 meters, refers to the length of the innermost runway, but also know that the innermost radius is 36 meters, so only need to find the perimeter of the two semicircular bends of the innermost runway and Then subtract 400 meters from the perimeter of the two curves to get the straight length. 400-3.14×36×2≈174 174÷2=87 meters
The total length of the fourth track is obtained by the sum of the two semi-circular bends on the fourth lap and the addition of two straights. The front side already knows that the length of the straights is: 87, so the total length of the fourth track is: 87 ×2+2×3.14×(36+1.2×3) ≈423 meters
The total length of the fourth track is obtained by the sum of the two semi-circular bends on the fourth lap and the addition of two straights. The front side already knows that the length of the straights is: 87, so the total length of the fourth track is: 87 ×2+2×3.14×(36+1.2×3) ≈423 meters
The first 87×2+2×3.14×(36+1.2×0) = 400 meters
The second 87×2+2×3.14×(36+1.2×1) ≈408 meters
The third 87×2+2×3.14×(36+1.2×2) =415 meters
The fourth track 87×2+2×3.14×(36+1.2×3) ≈423 meters
Fifth track 87×2+2×3.14×(36+1.2×4) ≈ 430 meters
The sixth track 87×2+2×3.14×(36+1.2×5) ≈438 meters
Seventh Road 87×2+2×3.14×(36+1.2×6) ≈ 445 meters
Eighth Route 87×2+2×3.14×(36+1.2×7) ≈453 Meters
Third, how to choose the ideal marking machine
Some of the exaggerated advertisements made many users feel helpless. They did not know which brand to choose, or even what type of marking machine, to better reflect the value of the equipment. According to the information of nearly ten Chinese and foreign striping machine manufacturers collected by the author himself, after careful research and comparison, the main points that should be noted in the procurement are introduced. To avoid unnecessary trouble, this article will not mention any brands and models. To remind everyone that: The underlined machine described below uses room temperature (cold paint) paint.
The main components:
1. Engine: Most marking machines use the engine as power, but also use batteries as power. If the engine is used, its power is about 2.5HP to 20HP, but it is better to use international famous brands such as Briggs & Stratton and Honda in Japan. Its advantages are self-evident: stable performance and easy procurement of spare parts. Almost determines the running performance of the entire equipment; if the battery is used as power, it must also consider the time each charge can run, preferably not less than 7 hours (approximately 1 day of work time).
2. Air Compressor: For marking machines that rely on air for sparging (not hydraulic spray), it is also the main part that affects the performance of the whole machine. As with engines, you should consider buying products with internationally renowned brand compressors. The greater the amount of emissions, the better, but there is a certain limit.
3. Drum: There are two main functions: First, paint, in this sense, the size of its capacity will affect the number of filling and the progress of the job. Another function that many users neglect is that the container is also a pressure vessel. It is pressurized by a compressor and turns into a pressurized “gas tank†to become the driving force of the scribing work. In this sense, it The sealing, safety, and corrosion resistance are all users should consider. Better barrels are made of stainless steel, and individual products also meet American ASME standards.
4. Spray guns: There are two types on the market. One is the use of “spray box†for spitting. The price is relatively cheap. It is particularly suitable for sports field lawns and general parking lot construction; the other is the use of spray guns for spitting. This is a strict spray gun, but the price of its nozzle is relatively high.
Attachments and other features:
1. Width: International road marking width is 15cm. Considering that the marking machine may be used in parking lots, residential areas, etc., it is necessary to purchase a marking machine with a width adjustment function, which will help Use and save paint. The general adjustable range is 5 to 15 cm.
2. Types of paint: There are two commonly used paints: solvent type and water-soluble type. If the striping machine does not "choose pick and choose", both can be used, you can expand your business scope to the sports field lawn and other places.
3. Handle the spray gun: In addition to using the hand-held spray gun, you can freely use the template to spray various symbols. You can also work on walls, columns, etc. outside the ground. Hand-held spray gun has slowly become the standard configuration of various types of marking machines.
4. Cleaning System: Some marking machines are equipped with an automatic cleaning system, which can quickly clean the piping system after each work, saving more than half of your cleaning time.
5. Glass bead system: Road maintenance companies also need to consider the configuration of glass bead dispensing system as a standard configuration. The system can spray glass beads, so that the construction of the marking line fully meets the requirements of the country.
6. Curved work. Some of the striping machines also have an extra wheel on the rear, which allows you to work freely along curved lines. Engaged in sports fields and multiple corners.
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