SJY Mobile Scissor Lift Platform Electric Hydraulic

The SJY series four-wheel mobile scissor lift platform features a scissor lift structure combined with a four-wheel chassis for flexible mobility. It offers excellent stability, a spacious work platform, and high load capacity, making it ideal for extended working ranges at height and suitable for multiple workers simultaneously. The platform surface is fitted with anti-slip insulated plastic wave-pattern plates or checkered steel plates, which are easy to replace and give the unit a clean, professional appearance. Models range from SJY0.3-4 to SJY3-12, with lifting capacities from 300 to 3000 kg and lifting heights from 4 to 18 m. Power options include manual or electric drive.

The SJY series mobile lifting platforms are available in two capacity ranges: standard (300–1000 kg) and heavy-duty (1000–3000 kg). Standard models are designated SJY0.3/0.5/0.8/1.0 with lifting heights of 4–18 m, while heavy-duty models are designated SJY1/3 with lifting heights of 8–18 m. Each unit is equipped with a hand pump for emergency lowering during power outages, and lifting power is available in 220V or 380V supply options.

Four-Wheel Mobility for Easy Relocation: Equipped with four swivel casters and a tow bar, the platform can be quickly moved between work sites without permanent installation—ideal for property maintenance, construction, and venue applications requiring frequent repositioning.

Spacious Platform for Multi-Worker Operation: Platform sizes range from 1750×750mm to 3400×1800mm, accommodating up to 3–4 workers simultaneously. Combined with a 300–3000 kg load capacity, it provides ample room for tools and materials, significantly boosting productivity at height.

Emergency Lowering Without Power: A hand pump (manual pump) is provided for emergency use. In the event of a power failure or motor malfunction, the platform can be safely lowered using the manual pump, ensuring personnel and cargo always return to the ground safely.

Stable Scissor Structure: Multiple scissor arm sets provide cross-bracing support, keeping the platform level and stable throughout the entire lifting range with minimal sway. High-lift models (12–18 m) feature reinforced scissor arm assemblies for demanding outdoor applications at greater heights.

Dual-Voltage Compatibility: Power supply supports both 220V single-phase and 380V three-phase configurations, allowing flexible selection based on site conditions without the need for an additional transformer.

The SJY series mobile scissor lift platform operates on an electro-hydraulic drive with scissor arm telescoping. A motor-driven hydraulic pump station generates high-pressure hydraulic oil, which drives the hydraulic cylinder to extend the cross-connected scissor arm sets. As the linkage angle of the scissor arms increases, the work platform rises vertically. For lowering, the solenoid directional valve opens the return oil path, and the hydraulic oil flows back to the tank at a controlled rate through the throttle valve under the combined dead weight of the platform and load, allowing the scissor arms to retract gradually and the platform to descend smoothly.

The four-wheel chassis provides mobility. Before lifting operations begin, the four adjustable corner outriggers must be extended and firmly supported on the ground to relieve the tires of load. The hydraulic system is equipped with a burst valve and overload protection valve—if a hose ruptures, the oil circuit automatically locks. During power outages, the platform can be safely lowered using the manual pump.

Note: The asterisk separators used in the original table for large-tonnage models have been standardized to ×.

The platform consists of the following core structural components:

Work Platform: A welded platform made of slip-resistant insulated plastic embossed plate or checkered steel plate, fitted with foldable guardrails and a toe board on all sides. Platform sizes range from 1750×750mm to 3400×1800mm to suit various working area requirements.

Scissor Arm Assembly: High-strength structural steel cross-link arms connected via pin hinges. Models with 4–6m lifting height feature 2 scissor arm sets, 8–14m models feature 3–4 sets, and 16–18m models feature 5–6 sets. All arm assemblies undergo weld flaw detection testing, with a safety factor ≥2.0.

Hydraulic Drive System: Comprises a motor, hydraulic pump station, hydraulic cylinder, solenoid directional valve, throttle valve, and piping. A manual hand pump is also provided for emergency lowering during power outages or system failures. Power options include 220V or 380V supply.

Four-Wheel Chassis: A steel chassis fitted with 4 swivel casters and a tow bar for easy movement between workstations. Adjustable outriggers at all four corners must be extended during operation to relieve tire load and ensure stability throughout the lifting process.

Safety Protection Devices: Hydraulic explosion-proof valve, limit switch, overload protection valve, emergency stop button, manual lowering valve, and mechanical safety support bar ensure safe operation.

Factory Equipment Installation & Maintenance: For high-altitude work in factories such as large equipment installation, pipe fitting, and lighting maintenance, the SJY series offers excellent mobility for quick repositioning between workstations. The spacious platform can accommodate multiple maintenance personnel and tools.

Property & Mall Routine Maintenance: For routine upkeep of commercial buildings and offices—ceiling repairs, light fixture replacement, exterior cleaning, etc.—the lightweight SJY0.3-4 model weighs only 400kg and fits through standard passenger elevators, making it ideal for occupied facilities.

Exhibition & Event Setup: For space arrangement, banner hanging, and lighting adjustment in exhibition halls, convention centers, and theaters, the mobile lift platform can be easily relocated to adapt to different venue layouts. Models SJY0.3-8 and above meet working height requirements of 8m and higher.

Building Decoration & Construction: For interior finishing, exterior painting, curtain wall installation, and other construction work, the SJY large-capacity models (SJY1-18, SJY3-12) offer load capacities of 1000–3000kg, capable of carrying substantial decoration materials and heavy tools.

Warehouse Rack Management: For stocking, inventory counting, and organizing goods on high-level racks, the SJY scissor lift platform replaces traditional ladders with a stable elevated work platform, significantly improving warehouse operation safety.

By Working Height: For 4–6m indoor work, choose the SJY0.3/0.5-4/6 (lightweight economy model); for 8–12m, choose the SJY0.3~1.0-8/10/12 (standard model); for 14–18m, choose the SJY0.3-14~18 or SJY1/3-14~18 (high-lift reinforced model).

By Load Capacity: For a single operator with light tools, choose the 300kg model; for two operators with standard tools, choose the 500kg model; for multiple operators with heavy tools, choose the 800–1000kg model; for heavy-duty construction, choose the SJY3 series (3000kg).

By Site Conditions: For narrow aisles or elevator access, prioritize the SJY0.3-4 (dead weight 400kg, dimensions 2150×950×1850mm); for large open areas, choose a model with a larger platform—the SJY3-12 features a 2750×1750mm platform for greater work efficiency. For outdoor use, pay attention to ground hardness and wind conditions.

Henan Kelude Heavy Industry Co., Ltd. provides end-to-end services for the SJY series mobile scissor lift platform, covering design, manufacturing, and after-sales support.

Quality Testing: Every unit undergoes a static test at 1.25 times rated load and a dynamic load test at 1.1 times rated load before leaving the factory. Scissor arm welds are inspected via non-destructive flaw detection, and the hydraulic system undergoes a 24-hour pressure hold test to ensure safety and reliability.

After-Sales Warranty: Full machine warranty for 12 months (excluding wear parts), with the hydraulic pump station and motor covered for 24 months. After-sales requests are responded to within 48 hours nationwide, and common spare parts are kept in ample stock.

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Q: How do I start operating the SJY mobile scissor lift platform once it arrives on site?

Once the platform is at the work position, first engage the parking brake or lock the wheels. Then, extend all four adjustable outriggers fully and secure them firmly on the ground so that the tires are slightly lifted or the main load is relieved. Only after confirming the outriggers are stable should you power on and begin lifting operations. After finishing, lower the platform to its lowest point, retract the outriggers, and the unit is ready to move.

Q: How do I lower the platform during a power outage or malfunction?

The SJY series is equipped with a manual emergency descent device. Locate the manual descent valve in the hydraulic system (typically on the side of the hydraulic power unit) and slowly turn the valve to allow the hydraulic oil to throttle back to the tank, letting the platform descend at a steady speed under gravity. Some models also feature a hand pump, which allows for manual pressure to raise or assist in lowering the platform during a power failure.

Q: Can the mobile scissor lift platform be used outdoors?

Yes, it can be used outdoors, but the following conditions must be met: ① The ground must be firm and level, with outriggers fully extended for support; ② Wind force must be ≤5 (wind speed ≤8m/s); operations are prohibited above level 6; ③ Watch out for slippery conditions on rainy days or wet ground; ④ For prolonged outdoor use, it is recommended to install a rain cover to protect the hydraulic power unit and electrical control box.

Q: What are the power supply requirements for the SJY platform?

The SJY series standard configuration supports 220V single-phase power (can be powered from a standard outlet), with 380V three-phase power available as an option. Standard load capacity models (300~1000kg) feature a motor power of 1.5~2.2kW, while heavy-duty models (1000~3000kg) feature a motor power of 2.2~4.0kW. Please specify your on-site power supply conditions when selecting a model.

Q: The SJY0.3-18 has a lifting height of 18m and a dead weight of 4300kg. How is it transported?

In transport configuration, the SJY0.3-18 measures 4010×2100×3250mm and requires a large truck or flatbed trailer. Most models have a height between 1.85m and 3.25m. Standard-height models (SJY0.3/0.5-4/6 with height ≤2m) can fit through standard indoor doorways. For extra-tall models, pay attention to transport route height restrictions.

Q: Can the platform guardrails be folded? How do I maintain the platform on a daily basis?

The guardrails on the SJY series are designed to be foldable, allowing the overall height to be reduced during transport. For routine maintenance: ① Apply lithium-based grease to the scissor arm pivot points monthly; ② Check the hydraulic oil level and quality quarterly, topping up with the same type of hydraulic oil if low; ③ Inspect the outriggers, wheels, and guardrails for any abnormalities before each use; ④ Replace the hydraulic oil and clean the tank filter screen annually.