Chair performance characteristics

① Product introduction: The appearance shape and size of the seat are designed according to the principle of ergonomics, the seat is comfortable, compact, safe and durable, convenient installation and maintenance. The overall shape of the seat is novel and unique, and the curved surface is soft and delicate. Steel double spring folding and turning mechanism, quiet folding, strong reliability. Various installation methods, can be one of the best choices for indoor and outdoor stadiums.
② Implementation standard: QB/T 2601-2013 "Public Seats in Sports Venues"; GB/T3199-1996 "Aluminum and aluminum alloy processing products packaging, marking, transportation, storage"; GB/T6892-2000 "Industrial aluminum and aluminum alloy hot extrusion profiles"; GB/T10357-1989 "Mechanical property test of furniture, strength and durability of chairs and stools"; GB/T19352.1~4-2003 "Quality requirements of thermal spraying structure Part 1-4 Comprehensive quality requirements"
③ Plastic parts of the seat: the backrest and seat plate are designed according to the ergonomic principle, which can fit the human body curve to the maximum extent. The material is made of pure PP raw material and nitrogen gas auxiliary molding. The material has good impact resistance, toughness, mechanical strength and chemical stability, making the seat reliable and wear-resistant and comfortable. The combustion performance level meets the requirements of GB8624-2012 standard B1(C).
④ Mechanical test: the seat design force is 200kg/ bit, and the static load test is carried out according to the standard GB/T 10357.3 standard: the seat plate is 2000N, the backrest is 760N, 10 times; Durability joint test: seat plate 950N, backrest 330N, 200,000 times; After the test, the seat does not break or crack; There is no obvious deformation in the loading part. The structure is not loose. And passed the SGS test of the European mechanics Level 4 standard (EN 12727:2016 test reached level 4); American standard mechanical standard ANSI/BIFMAX5.4-2012.
⑤ Left (right) seat flank: the left and right seat flank is located on both sides of the seat, is the hardware link seat components, is the mechanism that the seat plate can be stressed, the material is made of high-fiber nylon, the strength is higher than aluminum alloy, some conventional metals, has excellent toughness, wear resistance, further increase the feeling of sitting, while ensuring the strength of the seat
⑥ Seat hardware part: backrest connector, middle flipping mechanism, aluminum alloy material, spring steel material, designed as a double spring mechanism, to ensure rebound strength, durability, etc., aluminum alloy parts using casting aluminum process, surface spray powder, make the surface clean and bright, comfortable aesthetic feeling, durable.
⑦ Side and vertical bracket: The vertical bracket is composed of two symmetrical square cold-rolled sheets of 5mm thickness, and a 5mm thick square bottom plate. The laser cutting machine is formed and then the corner is rounded and the side is neat. The structure is simple, the installation is convenient, and the strength is high, which can ensure the stability of the seat system.

Structure description of movable stand bed frame

The movable stand is mainly composed of guardrail, pedal, stand controller, bottom front beam, anti-slip strip, corner guard, aluminum alloy decorative strip, load-bearing beam and support system. Active stand light weight, large load, bed load 500KG/㎡, guardrail load 100KG/M.
1. Support system: The stand support system is welded from 40mm*120mm*2.5mm steel pipe, with reasonable structure and strong bearing capacity. Under the support system is the walking wheel frame, the outline size is 40mm*120mm, the support wheel is installed under the support wheel frame, the diameter is 100mm, the width is 30mm. The column of the support system is a rectangular tube of 40mm*120mm*2.5mm, the upper part of the column is connected with the bearing beam, and the guiding mechanism is arranged below the column for guiding the walking wheel frame of the next layer, ensuring that the stand always moves in a straight line. A diagonal brace is arranged between the column and the rear beam of the support structure to ensure that the column and the rear beam are always in a vertical state, ensuring the stability and safety of the support system, and there will be no swaying from side to side.
2. Front and rear bearing beams: The front and rear of each bed frame are provided with load-bearing beams, the rear load-bearing beams are made of cold-rolled steel plate bent, the overall size is 40mm*220mm*2.5mm, the front beams are 20mm*40mm*2.0mm rectangular tubes, the front and back beams are closely connected with the supporting columns, forming a whole, the structure design is reasonable, the bearing capacity is strong, and the deformation is not easy.
3, pedal system: pedal system is mainly composed of support bracket, wood, surface layer, aluminum alloy decorative strip, rubber anti-slip strip, plastic corner protection. The support bracket is welded with 40MM*40MM*1.5MM square steel pipe and evenly arranged between the front beam and the back beam. Laminated plywood with a thickness of 18mm is laid on the top of the support bracket. The plywood is fixed on the support bracket by screws. The countertop is flat and not easy to be deformed. The surface of the wooden board is laid with gray PVC floor glue with a thickness of 2MM. The surface is flat, non-slip and wrinkle-free, which is easy to clean. Aluminum alloy decorative strips are installed on the front and both sides of each layer of pedals, the overall size is 60MM*72MM*1.5MM, and rubber anti-slip strips are inlaid above the aluminum alloy, and plastic corner guards are installed at the aluminum alloy corner. Based on the above design, the pedal looks beautiful and can effectively prevent the audience from slipping and scratching.
Step: A box-type step is set at the channel of each layer above the stand, the height of which is half of the height of the storey. The step skeleton is bent by cold-rolled steel plate with a thickness of 1.5MM. The top of the skeleton is laid with wooden boards, floor glue, aluminum alloy and corner protection.
4, safety guardrail: on both sides of the stand bed frame, the rear side is installed with safety guardrail, the height and spacing of the guardrail are designed and manufactured according to relevant national standards. The guardrail adopts laminated design, which can automatically expand with the grandstand when it expands. The outer frame of the guardrail is made of 20MM*40MM*1.5MM steel pipe bent, and the guardrail and the stand bed frame are fixed and connected by bolts, which has strong bearing capacity and is not easy to deformation.
5, drive system: drive system is mainly composed of drive wheel, drive shaft, sprocket, reducer motor, etc., drive motor installed in the first row below the platform, using domestic well-known manufacturers products, working voltage voltage 380V/220V, frequency 50HZ, power 0.37KW-1.5KW range, motor noise less than 50DB. The output torque of the motor is transmitted to the driving wheel through the chain, sprocket, transmission shaft, etc. The inner core of the driving wheel is cast iron, and the outer layer is wrapped in rubber, which increases the friction while protecting the ground from damage to the maximum extent. Each group of driving mechanism is equipped with 4 driving wheels to ensure smooth operation of the stand and no deviation phenomenon.
6, electrical system: The grandstand electrical system uses three-phase 380V or single-phase 220V power supply, equipped with overload protection and leakage protection device, when there is leakage or overload can be quickly cut off the main power supply, so as to avoid accidents. The control part of the movable stand adopts 24V low-voltage control circuit, and the first row vertical plate is installed with a handle socket. When operating the stand, you only need to insert the handle plug into the socket to expand, withdraw and suspend the operation of the stand. The movable stand is equipped with a limit switch, which can automatically stop running when it is deployed or withdrawn in place.
7. Side decoration: In order to prevent spectators from entering the inside of the stand, flannel side curtains are used on both sides of the stand, and the stand bed frame is installed with side curtain slides, which can be automatically closed with the stand when the stand is extended. The side curtain has red, gray, black for users to choose, the side curtain is not only beautiful and generous, but also has a sound absorption effect, which can improve the reverberation effect of indoor sound.

Dimension drawing

Case

Detail drawing