2.24.2026 / 4-minute read

Longda Food Cold Storage Lift Case Study: 1500kg Hydraulic Lift for Pallet Rack Handling | Anti-Freeze Solution

Overview

Longda Food Group, a leading enterprise in the food processing industry, required an efficient internal logistics solution for its cold storage facility.

The task involved transporting heavy-duty post pallets or insert-type racks, weighing 1500kg per load, between the first and second floors.

The freezing environment posed significant challenges for equipment stability, safety, and material durability.

Basic Parameters

Parameter	Specification
Application	1500kg Cold Storage Lift for Qiao Gu Jia (Post Pallet) Handling
Load Capacity	1500 kg
Car Size (mm)	1500 (W) x 1500 (D) x 2200 (H)
Hoistway Size (mm)	2400 (W) x 1900 (D)
Travel Height	4100 mm (2 Stops / 2 Stations)
Speed	30 m/min
Entry Type	2400 mm Through-Type (Front & Rear)
Motor	Dongli 11kw (Low-temperature adapted)
Control System	Siemens SMART 200 PLC + 10″ Kunlun Tongtait HMI
Operation Modes	Manual & Automatic
Guide Rails	T90 (Car) / TK5A (Counterweight)
Safety Devices	Anti-drop safety gear, chain break detection, light curtain, polyurethane buffers
Landing Doors	PVC High-Speed Rolling Doors (2 sets, integrated)
Main Structure	1205mm square tube frame / 16080*4mm car frame
Enclosure	Rock wool panel insulation

Requirements

Sub-Zero Environment: All equipment needed to operate reliably within a cold storage room, requiring special consideration for lubricants, electrical components, and metal brittleness.
Specialized Cargo: The “Qiao Gu Jia” racks are large (1500*1500mm) and require precise alignment with aisle directions. A light curtain detection system was mandatory to prevent oversized loads from colliding with doors or the shaft.
Tight Timeline: Commissioning was required by the end of July, leaving no room for delays in manufacturing, delivery, or installation.

Solution

Robust Structural Design:
- Through-Type Configuration: The 2400mm clearance allows for a straight pass-through flow, perfectly aligning with the racking system and eliminating the need for manual turning inside the lift.
- Reinforced Frame: Constructed with 120*5mm main tubes and a 160*80*4mm car frame to handle the dynamic load of 1500kg without deflection or wear over time.
Cold Storage Adaptability:
- Cold-Tolerant Drive: Equipped with a Dongli 11kw geared motor filled with low-temperature lubricants to ensure smooth starts even in freezing conditions.
- Insulated Enclosure: The entire hoistway is enclosed with rock wool panels, minimizing temperature exchange and protecting the mechanical structure from extreme thermal stress.
Advanced Control & Safety Systems:
- Intelligent Operation: A Siemens SMART200 PLC and a 10-inch Kunlun Tongtait HMI provide both manual and automatic modes, offering operators clear status updates and control.
- Multi-Layered Protection:
  - Light Curtain Detection: Installed at the car entrance, it immediately stops operation and triggers a warning beacon if the load exceeds dimensional limits, preventing accidental collisions.
  - Chain Break Safety: In the unlikely event of a chain failure, an elevator-type safety gear instantly engages on the T90 guide rails, locking the car in place.
  - Buffers: Polyurethane buffers provide a smooth and quiet stop at terminal landings.
Integrated High-Speed Doors:
- Two sets of PVC high-speed rolling doors are fully integrated with the lift controls. They open automatically upon arrival and close rapidly after departure, significantly reducing cold air loss and improving energy efficiency.