Transporting volatile lithium cathode precursors and anode powders across multi-story processing decks presents dust-ignition risks and cross-contamination hazards. This BT4 explosion-proof reciprocating VRC lift elevates 1500 kg bulk bags at 15 meters per minute, sustaining continuous 24-hour duty cycles across a 4500 mm vertical stroke.
Ex d IIB T4 Explosion-Proof: Sealed electricals, motor drives, and button stations prevent combustible dust ignition.
Battery-Grade Contamination Control: Zero copper, lead, or zinc contact materials protect cathode purity.
Insulated SUS304 Cladding: Dual 0.5 mm stainless steel walls with 50 mm rockwool insulation isolate process air.
| Technical Parameter | Standard Specification | Engineering Customization Range |
| Rated Load Capacity | 1,500 kg (1.5 Metric Tons pallet load) | Fully Customizable to Client Specifications (500 kg – 5,000 kg) |
| Vertical Stroke / Height | 4,500 mm (2 Stops / 2 Levels) | Fully Customizable to Client Specifications (Up to 25 meters) |
| Carriage Usable Dimensions | 1,500 mm (W) × 1,500 mm (D) × 2,000 mm (H) | Fully Customizable to Client Specifications |
| Lifting Linear Speed | 15.0 m/min (VFD controlled profile) | Sized per daily throughput requirements |
| Daily Material Throughput | 150 Metric Tons / 24-Hour Continuous Operation | Engineered for multi-shift industrial service |
| Explosion-Proof Rating | Ex d IIB T4 / IP54 (Dust & Gas Proof) | ATEX Zone 1/21 or Zone 2/22 certified packages |
| Contamination Restrictions | Cu-Free, Pb-Free, Zn-Free Materials (Excluding electricals) | 100% Stainless steel contact surface build |
| Carriage Deck Construction | 4 mm SUS304 Stainless Steel Checkered Plate | Solid flat SUS316L / Wear-resistant polymer plates |
| Primary Tower Framework | 120 × 120 × 4 mm Structural Square Steel Tubing | Modular bolt-together sections ≤ 3.0 m length |
| Tower Enclosure Walls | 0.5 mm SUS304 + 50 mm Rockwool + 0.5 mm SUS304 Panels | Corrugated sheet steel / Wire mesh enclosures |
| Drive Mechanism Type | 20A Heavy-Pitch Roller Chain + Sprocket Drivetrain | Direct-acting hydraulic cylinder drive |
| Geared Drive Motor | 7.5 kW Dongli Brake Motor (Tier-2 Energy Efficiency) | SEW-Eurodrive / Nord explosion-proof motor |
| Landing Gate Configuration | Blue Rapid PVC Roll-Up Doors (W1500 × H2000 mm) | Stainless steel bi-parting / Vertical sliding gates |
| Control System Architecture | Siemens S7-200 SMART PLC + Siemens VFD | Schneider / Omron ex-proof control packages |
| Power Supply Rating | 380V / 50Hz / 3-Phase | Fully Customizable to Client Specifications (208V–480V, 60Hz) |
The outer support tower uses 120×120×4 mm structural square tubing with modular mast sections under 3.0 meters for building access. Carriage framework consists of 120×60×4 mm rectangular hollow sections topped with a 4 mm solid SUS304 stainless steel diamond tread floor plate that supports manual pallet jack wheel loads. Dual heavy-duty 20A roller chains provide positive mechanical drive without stretch under full payload. External tower walls feature 0.5 mm SUS304 stainless steel interior and exterior skin sandwich panels with 50 mm non-combustible rockwool core insulation.
The drivetrain uses a 7.5 kW high-efficiency industrial gearmotor with IP54 protection and Class F insulation, mounted inside an Ex d IIB T4 cast enclosure. Guide rails feature dry composite slider blocks, eliminating open grease reservoirs that collect airborne lithium powder. GRADIN delivers a 12-month complete mechanical and electrical warranty, structural load test reports, explosion-proof conformity certificates, and full schematic documentation.
Z-type straight-through loading allows pallet truck operators to enter through the front W1500×H2000 mm portal and exit straight through the opposite upper deck door. High-speed blue PVC roll-up doors with transparent middle vision panels open and close in sync with carriage docking. For adjacent battery module assembly and cell testing lines, plants can install explosion-proof vertical material lifts to route crated components.
Fail-safe mechanical drop-stop pawls engage hardened mast arrestor cutouts within 0.10 seconds if chain slack occurs. Landing portals integrate Omron limit switches with Siemens S7-200 SMART PLC interlocks, keeping rapid roll-up doors locked until the carriage completes level alignment. The machine meets international manufacturing and hazardous area standards:
ASME B20.1 Safety Standard for Conveyors and Related Equipment
OSHA 1910 Hazardous Classified Locations Standard
ATEX Directive 2014/34/EU and IECEx Equipment in Explosive Atmospheres Standards
NFPA 70 National Electrical Code (NEC Article 500 Class I, Zone 1 / Class II Dust Ignition-Proof)
Lithium Battery Cathode Powder Handling: Vertical transport of 1.5-ton bulk bags containing NMC, LFP, and LCO raw materials to upper reactor vessel decks.
Graphite Anode Compounding: Elevating palletized bulk bags of synthetic graphite powder between raw material storage and slurry mixing towers.
Solid-State Electrolyte Production: Cleanroom vertical transport of high-purity ceramic and sulfide electrolyte precursors under inert conditions.
Chemical Precursor Packaging: Moving 150 metric tons per day of dry chemical reagents between ground receiving bays and second-story dryer silos.
Hazardous Dust Formulation Bays: Vertical routing of combustible metallic powders within ATEX Zone 1 / Zone 21 rated chemical suites.
Battery Recycling & Shredding Lines: Elevating black mass bulk containers to elevated separation and hydrometallurgical processing platforms.
For this heavy-duty series, we can engineer load capacities up to [300] tons, with platform dimensions and lifting heights customized to your operational envelope. Requirements exceeding our standard engineering matrix will undergo a Finite Element Analysis (FEA) by our engineering team to ensure structural viability before proposing a solution.
To initiate the engineering proposal, please provide the following baseline data:
Rated Load Capacity
Maximum Lifting Height & Closed Height
Platform Dimensions (L x W)
Duty Cycle (e.g., operational cycles per hour/day)
Environmental Conditions (e.g., indoor/outdoor, washdown, explosion-proof)
Pit depth or overhead clearance constraints
Yes. The control systems can be equipped with standard communication protocols (e.g., Profinet, Modbus, Ethernet/IP) utilizing [Siemens / Allen-Bradley / Omron] PLCs. This ensures seamless I/O signal synchronization with upstream/downstream conveyors, AGV/AMR units, and your central control room.
Every custom unit undergoes a mandatory Factory Acceptance Test (FAT) prior to dispatch. This includes continuous operational testing at 100% rated load, static overload testing at [120% / 125%] capacity, and the physical triggering of all mechanical anti-fall and hydraulic safety interlocks. FAT documentation and video proof are included in your engineering package.
Upon final approval of the General Arrangement (GA) drawings, the manufacturing lead time is typically 4 to 8 weeks. Oversized structural components are engineered with a modular design to fit into standard shipping containers (20FT/40HQ). On-site assembly utilizes pre-engineered bolted flange connections and heavy-duty aviation plugs, strictly eliminating the need for field welding.
We provide a standard [12/24]-month warranty covering the structural frame and primary hydraulic/electrical components. To minimize operational downtime, a comprehensive set of standard consumables (e.g., cylinder seal kits, travel switches, relays) is shipped alongside your equipment. During the warranty period, replacement parts for non-human-induced failures are dispatched via priority air freight (DHL/FedEx) within 48 hours.
Beyond the warranty, we guarantee lifetime engineering support. Your custom equipment's CAD drawings, electrical schematics, and BOM (Bill of Materials) are permanently archived in our system. This ensures you receive uninterrupted remote troubleshooting, maintenance guidance, and exact spare parts matching for the entire lifecycle of the equipment.
Gradin Machinery is a leading manufacturer specializing in aerial work platforms and hydraulic lifting solutions. With ISO & CE certifications, we provide safe, reliable, and customized equipment for global industrial needs
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