SJD Hydraulic Guide Rail Lift Platform for Warehouse Loading

The SJD series rail-guided fixed lifting freight lift is a non-scissor Hydraulic Lifting Platform specifically designed for vertical goods transport between floors 2 to 5 in industrial factory buildings, restaurants, and hotels. It utilizes a hydraulic drive with rail-guided structure, requiring a minimum installation height of only 75~165mm. With no overhead suspension point required, it is ideal for elevator shafts and locations where excavating a pit is not feasible. The equipment operates smoothly and is simple and reliable to operate, featuring dual hydraulic and electrical safety protection. With a load capacity ranging from 500 to 3000kg and a lifting height of 3.5 to 14m, it serves as an economical vertical goods transport alternative to elevators.

The SJD series covers multiple models from 0.5t to 3t: SJD0.5-4.5 (500kg load capacity), SJD1.0 series (1000kg load capacity), SJD2.0 series (2000kg load capacity), and SJD3.0 series (3000kg load capacity, including a dedicated model for lifting vehicles). Each model can be customized in Table Dimensions, lifting height, and loading/unloading direction based on site-specific conditions, offering flexible solutions tailored to customer needs.

Rail-guided fixed lifting freight lifts are available in three structural configurations: single-cylinder single-arm, single-cylinder double-arm, and double-cylinder double-arm, each suited to different load capacities and installation space requirements:

Single-Cylinder Single-Arm Rail-Guided Lifting Freight Lift: Featuring a hydraulic design with one Hydraulic Cylinder and two guide rails, this configuration offers low cost and minimal space occupancy, making it suitable for loads up to 1 ton with platform dimensions within 1.5m in length and width. The equipment features Electric control with hydraulic lifting, comes with an automatic leveling function, and offers a high Safety factor. It is widely used in supermarkets, hardware stores, small factories, and similar venues.

Single-Cylinder Double-Arm Rail-Guided Lifting Freight Lift: This design incorporates one Hydraulic Cylinder and four guide rails, with the cylinder positioned on one side of the lift and an adjustable wire rope on the other. It is suitable for loads up to 2 tons. The single-cylinder design enables 90-degree loading/unloading of goods, making it ideal for confined spaces where specific loading direction requirements exist.

Double-Cylinder Double-Arm Rail-Guided Lifting Freight Lift: Featuring two Hydraulic Cylinders and four guide rails, this configuration is designed for loads exceeding 2 tons. With synchronized dual-side cylinder drive, it delivers superior load capacity and operational Stability, making it well-suited for heavy-duty, large-platform industrial freight applications.

Minimum installation height of only 75mm: Unlike traditional freight lifts that require pit excavation, the SJD series requires a minimum installation height of only 75~165mm. This eliminates the need for deep foundation work, significantly reducing civil construction costs, and is particularly suitable for locations with elevator shafts or where underground construction is not possible.

Wide load capacity range, 500~3000kg optional: From compact freight lifts for supermarkets (SJD0.5) to large industrial units (SJD3.0), the series covers a load range of 0.5 to 3 tons. Table Surface dimensions can be customized to meet vertical goods transport requirements across diverse industries.

Dual hydraulic and electrical safety protection: Equipped with multiple safety devices including hydraulic anti-burst valves, Limit switches, an Emergency Stop Button, and Overload Protection, the lifting process is smooth and reliable, ensuring secure goods transport at all times.

No overhead suspension point required, simple structure: Featuring floor-level installation, there is no need for load-bearing structures at the top of the building, making it particularly suitable for Factory building Retrofit projects. The guide rails ensure the platform remains level and tilt-free throughout the entire lifting travel.

Multiple loading/unloading directions available: Depending on the site layout, 90-degree or 180-degree loading/unloading directions can be selected. The single-cylinder double-arm model is especially well-suited for installation scenarios where three sides are against walls in space-constrained environments.

The SJD series rail-guided lifting freight lift operates on a hydraulic drive principle with rail guidance. A motor-driven hydraulic pump generates high-pressure hydraulic oil, which drives the Hydraulic Cylinder to push the loading platform vertically along fixed guide rails. During ascent, hydraulic oil enters the cylinder, extending the Piston Rod and raising the platform smoothly along the rails. During descent, the Solenoid Directional Valve opens the return oil passage, and the hydraulic oil flows back to the tank at a controlled rate through the Throttle Valve, driven by the Dead Weight of the goods, achieving a smooth Lowering motion.

The rail system consists of guide rails fixed to the building structure and Guide Rollers mounted on both sides of the platform, ensuring the platform remains level throughout the entire lifting travel and preventing jamming caused by eccentric loads. The hydraulic system incorporates an anti-burst valve — in the event of an unexpected rupture in the Hydraulic Pipeline, the valve automatically locks closed, preventing rapid platform descent and ensuring equipment safety.

Note: The red-highlighted data in the 1t and 2t rows are corrections of original data errors (0001000); the model name SJD3.0-4.5 (automotive lifting) has been completed with parentheses, and the overall dimensions have been completed with multiplication sign separators.

The lift platform consists of the following core components:

Loading Platform: A welded platform made of anti-skid checkered steel plate, equipped with foldable or detachable guardrails on all sides, and fitted with guide rollers on both sides that run along the guide rails to ensure smooth lifting without load shifting.

Hydraulic Drive System: Comprising a motor, hydraulic pump station, hydraulic cylinders, solenoid directional valve, and piping, this system provides stable lifting power. The number of hydraulic cylinders ranges from 1 to 2 depending on the model.

Guide Rail System: Guide rail assemblies fixed to the building structure or within the shaft, working in conjunction with the guide rollers on both sides of the platform to constrain movement strictly along the vertical axis, preventing horizontal sway and rotation.

Safety Protection Devices: Including hydraulic rupture valves (automatically locking the circuit in the event of hose failure), limit switches (restricting maximum/minimum travel), emergency stop buttons, overload protectors, and mechanical safety locks.

Electrical Control System: Multi-point control panels at each floor level enable calling from any floor and precise floor-level stopping, offering simple and intuitive operation. Automatic leveling and delayed door-closing functions can be configured as required.

Industrial Plant Floor Freight: Vertical transport of raw materials, semi-finished goods, and finished products between floors 2 through 5 in factory workshops, with load capacities of 500–3000 kg, serving as a cost-effective alternative to freight elevators.

Restaurant Food & Dish Transport: Conveying ingredients, tableware, and meals from the kitchen to upper floors. The installation height can be as low as 75 mm, requiring minimal modification to the building structure.

Warehouse Racking Transfer: Used in conjunction with forklifts and hand trucks for efficient inter-level cargo transfer within warehouses. Table dimensions can be customized to match existing logistics equipment.

Automotive Maintenance Lifting: The SJD3.0-4.5 (automotive lifting) model features a large 5000×3000 mm platform with a 3-ton load capacity, designed specifically for lifting cars and SUVs during repair and maintenance operations.

Underground Parking / Shaft Applications: With a minimum installation height of 75–165 mm and no excavation required, this solution is ideal for basements, retrofits of existing buildings, and locations with shafts where digging is not feasible.

By Load Capacity: Choose SJD0.5 for loads up to 500 kg, SJD1.0 for 1000 kg, SJD2.0 for 2000 kg, and SJD3.0 series for 3000 kg. Heavier loads require more hydraulic cylinders (single or dual cylinder configurations).

By Lifting Height: The number in the model designation represents the maximum lifting stroke (in meters). For example, SJD1.0-5 offers a maximum stroke of 5 m. For floor heights of 3–4 m, select a 4.5–5 m model; for 6–8 m floor heights, choose an 8–10.5 m model. Note that the minimum platform height is 75–165 mm, so ensure sufficient clearance at the base.

By Installation Space: For confined spaces, choose a single-cylinder single-arm configuration (single-side guidance); for 90-degree loading/unloading, opt for a single-cylinder double-arm setup; where space permits on both sides, a dual-cylinder double-arm configuration offers greater stability. Table dimensions range from a minimum of 1200×1000 mm to a maximum of 5000×3000 mm, selected based on cargo size.

Henan Kelude Heavy Industry Co., Ltd. provides end-to-end services for the SJD series guide-rail lift platforms, covering everything from design and manufacturing to installation and commissioning:

Three-Stage Quality Inspection: Incoming material inspection, weld flaw detection, and full-machine load testing. Every unit undergoes static and dynamic load tests at 1.25 times the rated load before leaving the factory to ensure safety and reliability.

Installation & Commissioning: Customized installation plans are developed based on on-site shaft dimensions and floor structure. Our professional installation team handles on-site construction, maintaining guide rail perpendicularity within ±2 mm, followed by a 48-hour continuous operation test after commissioning.

After-Sales Warranty: Full machine warranty for 12 months (excluding wear parts), with hydraulic pump stations and motors covered for 24 months. After-sales requests are addressed within 48 hours nationwide, and we maintain ample inventory of common spare parts for rapid supply.

Need a Quotation for the SJD Guide-Rail Lift Platform?

Provide parameters such as Load Capacity, lifting height, Table Dimensions, and number of installation floors, and we will customize a solution and Quotation for you within 2 hours.

consultation hotline: 13903802779

Q: Does the SJD Guide-Rail Lift Platform require a pit to be dug?

No. The SJD series features a minimum installation height of only 75~165mm, eliminating the need for deep foundations or pits. It can be installed directly on the ground, significantly reducing civil construction and Retrofit costs. This makes it highly suitable for installation in existing buildings.

Q: What is the difference between a Guide-Rail Lift Platform and a scissor lift platform?

A Guide-Rail Lift Platform moves vertically along fixed Guide Rollers, making it ideal for long-stroke transport (3.5~14m) within a shaft. A scissor lift platform uses folding arms for lifting, typically suited for lower heights (usually ≤6m) and open installations. Guide-rail lifts occupy less space and offer better Stability at equivalent heights, making them particularly suitable for transporting goods between floors.

Q: What are the Power Supply requirements for the SJD series? Is three-phase power needed?

The SJD0.5 model has a motor power of 1.5kW and can be driven by 220V single-phase power. The SJD1.0~3.0 series has a power range of 2.2~4.0kW and a 380V three-phase Power Supply is recommended. The specific power solution can be confirmed by our technical staff based on site conditions during the selection process.

Q: How do you handle Lowering the lift platform in a crash back?

The SJD series is equipped with a Manual emergency Lowering device. In the event of a power outage or malfunction, the Solenoid Directional Valve can be manually operated to slowly release Hydraulic Oil, allowing the platform to Lower safely to the bottom floor. Some models also feature a hand pump for emergency ascent, ensuring goods can be safely retrieved from any position.

Q: How long does it take to install a Guide-Rail Lift Platform?

From Site Survey to Installation & Commissioning, it generally takes 7~15 working days (depending on the Model and number of floors). This includes a Production Lead Time of 5~10 days and 2~5 days for On-Site Installation & Commissioning. We recommend allocating preparation time for shaft modification and power wiring beforehand.

Q: Can the Table Dimensions be customized? What is the maximum size?

Yes, customization is available. In the Standard configuration, the minimum Table Surface size is 1200×1000mm, and the maximum is 5000×3000mm (for the vehicle-lifting model). For special size requirements, please contact the manufacturer for customization. The Load Capacity and guide rail spacing will need to be recalculated based on the Table Dimensions.