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3D Explosion‑Proof Lift Platform for Spray Booths | Ex db IIC T4 Gb | Gradin

POSTED: 6/18/2026

Overview

Project Type: 3D explosion-proof guide rail lift platform
Product Series: Gradin Spray Booth Series
Industry: Automotive painting, industrial machinery coating, aerospace finishing
Core Function: 3-axis motion – lateral rail travel, longitudinal telescopic extension, vertical lifting
Explosion-Proof Rating: Ex db IIC T4 Gb (full system, suitable for Zone 1/2 hazardous areas)
Key Specs: 300kg capacity, 6 m/min lifting speed, 1.5kW motor, 220V/380V global compatible

In industrial spray booths, painting large workpieces (vehicle bodies, heavy machinery components) presents persistent challenges in efficiency, quality, and safety.

Limitations of traditional methods:

Positioning heavy workpieces is time‑consuming and often requires multiple operators, severely impacting painting cycle times.

Fixed scaffolding forces painters to constantly move around, making it difficult to maintain a consistent spray distance – leading to uneven coating.

Paint booths are filled with flammable solvent vapours; standard electrical equipment can generate sparks, creating serious safety hazards.

**Installation completed – live on-site photo**

Basic Parameters

Parameter	Value
Self‑weight	2500 kg
Load capacity	300 kg
Platform size	Customisable
Min. height	500 mm
Lifting speed	6 m/min
Drive	Hydraulic
Motor power	1.5 kW
Power supply	220V / 380V (global)
Control	Explosion‑proof, digital display, E‑stop
3D motion mechanism	Lateral: pulley + track / Longitudinal: chain + extension rail / Vertical: chain + vertical guide rail
Frame	I‑beam steel
Explosion‑proof rating	Ex db IIC T4 Gb (full system)
Customisation	Available

Challenge

3‑axis motion coordination: The platform must move independently in three directions – lateral (rail travel), longitudinal (telescopic extension), and vertical (lifting) – allowing the painter to cover all surfaces from a fixed standing position.
Full explosion‑proof design: All electrical components must meet Zone 1/2 hazardous area requirements – zero ignition sources.
Power‑off safety: The platform must lock immediately on power failure to prevent accidental movement or descent.
Structural stability under load: 300kg capacity combined with 3D mobility demands high rigidity and resistance to eccentric loads.

Solutions

3‑Axis Motion System – Guided by Rails in All Three Directions

Coating quality depends on maintaining a consistent distance and perpendicular angle between the spray gun and the workpiece surface. Traditional methods require painters to move around the workpiece – making consistency difficult. Our platform uses guide rails / tracks for precise, stable motion in all three axes:

Lateral Rail Travel
Pulleys mounted on the base run along steel tracks on the floor, driven by a motor with brakes. Movement is smooth and positioning accurate. Covers the workpiece width, enabling continuous painting from side to side.

Longitudinal Telescopic Extension
A chain‑driven telescopic mechanism moves the platform forward and backward along extension guide rails. Chain drive provides high rigidity and fast response; guide rails ensure precise direction without deviation. Solves depth coverage without the painter changing position.

Vertical Lifting
Chains and vertical guide rails achieve lifting. Chains act as the lifting element; vertical guide rails ensure straightness and stability, preventing platform sway. Reaches the optimal working height for different workpiece sizes.

Result: The painter remains in one fixed, comfortable position while the platform moves in all three directions via remote control – maintaining consistent spray distance and angle, improving coating uniformity, and significantly reducing fatigue.

Full Explosion‑Proof System – Ex db IIC T4 Gb

Our system uses Ex db IIC T4 Gb full‑system protection:

Ex db (flameproof enclosure): Withstands internal explosions without igniting the external atmosphere.
IIC: Highest gas group – covers hydrogen, acetylene, and all common solvent vapours.
T4: Surface temperature ≤135°C – below the auto‑ignition point of most solvents.
Gb: High protection level – suitable for Zone 1 and Zone 2 hazardous areas.

All components (motors, control boxes, push‑buttons, junction boxes) are certified – eliminating ignition sources completely.

Power‑Off Protection & Safety Redundancy

Automatic braking: Platform locks instantly on power failure – no drift or unexpected movement.
Overload protection: Integrated relief valve stops lifting when overloaded.
Emergency manual descent: Even with total hydraulic failure, the platform can be lowered manually and safely.

Heavy‑Duty Rigid Construction

I‑beam steel frame: Optimal strength‑to‑weight ratio.
Industrial‑grade load chains: High tensile strength – no elongation under heavy use.
Reinforced platform deck: Channel steel reinforcement – resists permanent deformation.
Guide rail / track system: Wear‑resistant, low‑friction, ensures motion accuracy in all directions.

Workflow

→Step 1: Workpiece In → Step 2: Lateral Alignment (pulley + track)
→ Step 3: Height Adjustment (chain + vertical guide rail) → Step 4: Longitudinal Extension (chain + extension rail)
→ Step 5: Spraying Operation (3D fine‑tuning via remote) → Step 6: Transfer Out

Product Certificates

FAQ

Answer: Vertical lift alone only solves height access. In spray painting, quality depends on maintaining a consistent distance and perpendicular angle between the spray gun and every surface of the workpiece.

With only vertical movement, painters still have to move around the workpiece – leading to inconsistent distance, awkward postures, and fatigue.

Our platform moves in all three directions – left/right, forward/backward, and up/down – so the painter stands in one fixed, comfortable position while the platform does the moving. The result: uniform coating thickness, reduced rework, and significantly less physical strain.

Answer: It‘s the highest practical explosion‑proof rating for paint booths. Breaking it down:

Ex db (flameproof): If an internal spark occurs, the enclosure contains the explosion – it cannot ignite the external atmosphere.
IIC: The highest gas group – covers all solvents used in paint booths (including hydrogen, acetylene, and every common solvent vapour).
T4: Surface temperature never exceeds 135°C – far below the ignition point of any solvent vapour.
Gb: Suitable for Zone 1 and Zone 2 hazardous areas.

In simple terms: This equipment can be used safely even if flammable vapour is present during normal operation. It eliminates the single biggest risk in paint booth operations.

Answer: The platform locks automatically and immediately. The integrated braking system engages the moment power is lost – the platform stops and holds position securely. It will not descend, drift, or move unexpectedly.

Additionally, even if hydraulic pressure is completely lost, a manual emergency descent valve allows the operator to lower the platform safely and slowly. There is no risk of sudden drops or uncontrolled movement.

Answer: Traditional scaffolding forces painters to constantly move around, climb up and down, and stretch to reach difficult angles – all while trying to maintain a consistent spray distance. The result is almost always uneven coating thickness, especially on complex geometries.

This platform eliminates the human variable. The painter remains in one ergonomic position while the platform moves left/right, forward/backward, and up/down – keeping the spray gun at a constant distance and perpendicular angle to every surface. The result is uniform coating, fewer defects, and significantly less rework. Production data shows a 30‑40% reduction in touch‑up time.

If you want to customize your material handling equipment, please contact us →.