Published by Hebei Yunxinda — This official disassembly guide illustrates the standardized, safe, and efficient dismantling process for electric retractable grandstands. It applies to venue relocation, equipment maintenance, site renovation and long-term storage.

1. Pre-Disassembly Preparation & Safety Rules

Before starting disassembly, complete all safety checks to avoid mechanical clamping, falling parts or electrical hazards.

- Power cut-off: Completely turn off the main power supply and control cabinet power, ensure no electric standby during the whole process.

- Reset equipment status: Fully retract the grandstand into compact nested state and confirm all tiers are stably stacked.

- Site protection: Clean the surrounding area, reserve enough operating space, and place warning signs to prevent irrelevant personnel from entering the construction zone.

- Tools preparation: Prepare torque wrenches, socket sets, Allen tools, protective gloves and packaging materials for parts classification.

2. Disassembly Sequence Principle

Follow the professional rule: disassemble installation accessories first, electrical system second, and main frame last. Reverse the installation order to ensure safe, orderly and non-destructive dismantling.

3. Step-by-Step Disassembly Process

Step 1: Remove Seats & Safety Accessories

Start with removable exterior parts. Dismantle guardrails, side baffles, aisle handrails and folding seat units row by row. Loosen the seat base bolts and take down each seat assembly completely. Classify and pack seats, bolts and small accessories to avoid loss or damage.

Step 2: Dismantle Electrical System & Control Devices

After confirming power disconnection, remove the control cabinet, external power lines, signal lines and limit switch wires. Disconnect the motor power connector and clean up the wiring grooves. Remove the geared motor and synchronous sensing devices separately and protect electrical components from dust and collision.

Step 3: Release Synchronous Transmission System

Loosen the chain tensioner and remove the transmission chain, connecting rods and synchronous linkage components. Make sure all movable tiers are in independent sliding state without mechanical connection restraint.

Step 4: Detach Movable Tier Frames

Disassemble the nested movable frames tier by tier from the rearmost row forward. Remove the connecting bolts between frames, separate the cross beams, vertical columns and inclined supports. During disassembly, keep each frame balanced to avoid tilting and deformation.

Step 5: Remove Roller & Guide Assemblies

Dismantle the bottom roller brackets, walking casters and limit guide structures. Check the rollers for wear before packaging for reuse or replacement.

Step 6: Dismantle Fixed Base Frame

Finally, remove the front fixed frame. Loosen the ground expansion bolts and lift the entire fixed load-bearing frame. Clean the installation ground and remove residual fixing accessories.

4. Parts Classification & Packaging Management

After disassembly, classify all steel frames, plastic seats, electrical parts, fasteners and transmission components. Protect painted steel surfaces with wrapping film, store electrical accessories in waterproof cartons, and label each batch clearly for subsequent reinstallation or transportation.

5. Key Safety & Technical Notes

- Never disassemble the grandstand while powered on or in extended working state.

- Do not forcibly pry or cut structural parts to avoid permanent deformation.

- All cables and connectors must be disassembled gently to prevent wire breakage and insulation damage.

- Record the assembly sequence during dismantling, which greatly improves reinstallation accuracy.

- Damaged or worn parts should be replaced before reinstallation to ensure future operation safety.

6. After-Disassembly Maintenance

Clean steel frame surfaces, remove dust and rust spots, and apply supplementary anti-rust treatment. Lubricate roller shafts and transmission parts for long-term storage. Complete equipment inspection and make a disassembly & maintenance report.

Summary

Standard disassembly of electric retractable grandstands ensures zero structural damage, complete component preservation and smooth reinstallation. Hebei Yunxinda provides professional one-stop services including grandstand installation, dismantling, relocation, maintenance and technical guidance for global venue projects.