Yongtai Sports Production School Soft Package Indoor Telescopic Stand Seat Support Customization

Description :

　　Electric telescopic grandstand - blow molded folding high back chair technical parameter description

　　Technical specifications and requirements for seats

　　1. The activity grandstand seats are selected as foldable hollow blow molded seats, with front mounted installation. Manually flip the seat. The seats are made of hollow blow molded HDPE material; The seat back width is 490 x 485mm, the seat width is 435 x 420mm, and the center distance is 500mm. The seat is designed with an arc based on ergonomics principles, and the back of the seat is not a straight plate. The arc from the edge of the back to the centerline of the back is greater than 50mm, and the tilt is greater than 50mm. The arc depth is ≥ 50mm, which is more in line with the sitting posture of the human body and provides a comfortable sitting experience.

　　2. The width of the grandstand layer is 850mm, and the width of the tail layer is 600; The first floor height is 330mm, and the staggered height is 300mm. The height design of the grandstand is mainly based on the comfort requirements of human sitting posture. The vertical distance from the calf of the seated person to the ground is generally 300-430mm. The height of the grandstand plus the height of the seat itself, the total height meets the comfort requirements of human sitting posture.

　　3. Requirements for static load of stands: The steel frame and skeleton of the stands must withstand a static load of ≥ 400kg/㎡ when unfolded, and a lateral swing of ≥ 36kg/㎡. The stepped platform can bear a static load of ≥ 400kg/㎡ when unfolded, and the bottom wheel bearing capacity must be ≥ 350Kg/piece.

　　Explanation of material specifications for grandstand seats

　　1. The telescopic drive system for the activity stand seats adopts an internationally advanced computer-controlled and operated electric drive method. The telescopic process is smooth, comfortable, safe, environmentally friendly, and energy-saving, and is more stable and noise free than traditional mechanical electric drive methods. The activity grandstand seats are equipped with synchronous telescopic devices to ensure that there is no directional deviation during extension and retraction. After stretching, they form a stepped shape, and after recycling, they form a box shaped stacked body. The electric system control of the activity stand adopts equipment, which is flexible and convenient to control. Motor technical parameters: voltage 380V, power 0.4-1.5KW, frequency 50HZ, speed 1400 revolutions per minute.

　　2. The framework materials of the bleachers (girders, main bracing columns, main bracing beams, straight beams, front beams, slant support angles and connectors) are molded with profiled steel, rectangular steel pipes and other materials, and the surface of the materials is subject to anti-corrosion and rust prevention treatment; The main beam is formed by folding C-shaped steel, with a specification of 180 × 60 × 30 × 2.5mm; The main support column, main support beam, straight bracket, and front beam are all made of rectangular tubes. The specifications of the main support column are 100 × 50 × 2.5mm, the specifications of the main support beam are 50 × 40 × 2.0mm, the specifications of the straight bracket are 50 × 40 × 2.0mm, and the specifications of the front beam are 40 × 40 × 2.0mm. The slant support support and connectors shall be galvanized pipes with a specification of φ 32 × 2mm. To avoid welding during installation, all structural components of the grandstand are installed using bolted connections. To ensure the support performance of the grandstand skeleton on the pedals, it is required that the center distance S between the cantilever beams be ≤ 600mm. The structure and materials of the grandstand shall be treated with anti-corrosion and rust prevention measures.

　　3. The transmission part of the grandstand adopts high-precision bearings and chain transmission, which is a more reliable device for preventing deviation than synchronous sprockets, ensuring smooth, stable and reliable operation of the grandstand. There is no directional deviation, jamming, slipping, or tooth jumping during extension and retraction;

　　4. The bottom wheels of the steel frame of the activity stand are made of thickened double bearing iron core polyurethane material, which will not leave rolling marks or damage the floor when rolling on it. The driving wheel adopts a wide PU wheel with a diameter of Φ 200mm and spokes of B=50mm, while the driven wheel adopts a wide PU wheel with a diameter of Φ 100mm and spokes of B=32mm. The driving wheels have multiple reinforced ribs covered with PU structure, providing the necessary driving friction for the stands, easily overcoming ground defects, meeting the needs of the stands, and not wearing down the floor.

　　5. The number of telescopic feet in each row can be set according to the size and requirements of the site. Each telescopic foot is equipped with 3 casters. When rolling on the floor, there will be no rolling marks left without damaging the floor.

　　6. The three sides of the grandstand and passage steps are wrapped with aluminum alloy profiles, with a specification of 42 × 67 and embedded with anti slip rubber strips.

　　7. There are safety railings on both sides of the activity stand. The safety guardrails for the stands are made of steel circular pipes with diameters of 38 and 25. After assembly and welding, the surface is treated with electrostatic spraying. The setting of guardrail brackets should be vertical, and the minimum effective distance between adjacent members should not exceed 110mm. The guardrail should be fixed during expansion and contraction.

　　8. The platform and pedals of the activity stand are made of 18mm thick flame-retardant multi-layer board, and the front is covered with 3mm thick fireproof and anti slip adhesive, which is easy to clean, comfortable and durable.

　　9. Anti deviation device: The upper guide rail of the activity stand adopts a limit roller device, and the lower walking beams adopt a hanging hook device. In addition, each platform is driven by a synchronous device to ensure that the stand moves vertically forward without deviation during the walking process.

　　10. Preventing accidental folding: The driving method of the activity stand adopts a rear mounted winch, and its chain is synchronously pushed forward in an "eight" shape. When the winch stops rotating when the stand extends, the chain pulls the stand forward, effectively preventing accidental folding of each layer of the stand.

　　11. The stand frame structure can withstand a load of ≥ 200kg per seat for 30 minutes, with a deformation of ≤ 20mm after unloading; the bed frame structure can withstand an impact of ≥ 80kg in the middle of each layer and a height of 300 ± 20mm without deformation.

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• Telescopic grandstand seats