SJY Towed Hydraulic Lifting Platform – Self-Propelled Lift

Product Introduction

The SJY towable hydraulic lifting platform is a four-wheel towable scissor lift, also known as a maintenance platform, aerial work platform, or mobile lifting platform. It covers 12 models ranging from SJY0.5-4 to SJY0.5-16, with load capacities from 300kg to 2000kg, a maximum lifting height of 16m, and table dimensions up to 2650×1340mm. The platform is moved either manually or by vehicle towing, and the hoisting mechanism is controlled by an electric-hydraulic system with a power supply of either 220V or 380V.

The SJY series is designed for manned aerial maintenance work in standard environments, and is widely used for equipment repair in factory buildings, exterior wall maintenance of buildings, warehouse rack restocking, maintenance of station and airport facilities, and municipal streetlight repair. With its mature structure, easy operation, and flexible transport, this model is a classic choice in the lifting equipment rental market and cost-effective aerial work applications. Note: This model is not suitable for flammable or explosive workshops; explosion-proof environments require dedicated explosion-proof models.

Product Details

• Product Name: SJY four-wheel towable hydraulic lifting platform
• Also known as: Maintenance platform / aerial work platform / mobile elevating work platform
• Model & Specification: SJY series (12 models from 0.5-4 to 0.5-16)
• Category: Scissor-type lifting machinery
• Place of Origin: Changyuan, Xinxiang, Henan
• Customization: Non-standard manufacturing available (load capacity, height, and table dimensions can all be customized)
• Stock Availability: Partial stock available
• Production Lead Time: 7–15 days
• Supply Coverage: Nationwide
• Delivery Method: Customer pickup or freight arranged on behalf of the customer
• Installation: Not required (ready for use upon delivery)
• After-Sales Service: One-year warranty

Operating Precautions

(1) This unit is a vertical-rise/vertical-lower lift platform with no self-propelled drive. It must be moved by manual pulling or towed by a vehicle.

(2) Before use, extend the anti-tip outriggers and secure them firmly. Confirm that all four outriggers are in full contact with the ground and bearing load before stepping onto the platform.

(3) Do not move the lift platform during operation. To relocate, lower the platform to its lowest position, retract the outriggers, and only then move the unit.

(4) This model is intended for conventional environments only. Do not use in flammable or explosive workshops.

(5) This product is custom-built. Drawings, appearance, and parameters are subject to the actual agreement.

Working Principle

The SJY towable hydraulic lifting platform operates on an electro-hydraulic drive principle: once the power supply is connected, the motor drives a gear pump that delivers hydraulic oil into the cylinder. The piston rod extends, pushing the scissor arm assembly to unfold and raise the platform vertically. For lowering, the solenoid valve reverses direction, allowing hydraulic oil to return to the tank through the throttle valve, and the platform descends slowly under its own weight. Anti-tip outriggers are fitted at all four corners of the work platform; once extended before operation, they form a stable support structure that ensures safe working at height.

Power supply options are 220V (single-phase, domestic) or 380V (three-phase, industrial), with a matched power rating of 2.2–3.0 kW. The control system consists of push buttons and a solenoid valve, offering simple and reliable operation. Platform raising and lowering are controlled by push buttons, and power is cut off automatically at the travel limit to prevent over-travel. The unit has no self-propelled drive and must be pulled manually or towed by a vehicle to the work position. The design is simple and maintenance costs are low.

Product Structure

• Chassis assembly — four-wheel towable chassis with tow bar, swivel casters, and fixed wheels. The chassis is fitted with mounting bases for the anti-tip outriggers.
• Scissor arm assembly — high-strength alloy steel scissor units, multiple sets hinged for synchronized telescoping action. Load capacities from 500 to 2000 kg, depending on configuration.
• Work platform — steel guardrail platform (max. 2650×1340 mm) with toe boards and protective railings. A tool box can be fitted as an option.
• Hydraulic system — motor, gear pump, cylinder, and solenoid valve bank, complete with relief valve and throttle flow control valve.
• Electrical control system — push-button control box with lift/lower buttons, emergency stop switch, power indicator, and limit switch protection.

Typical Applications

The SJY series towable lift platform uses a four-wheel towable configuration. It is pulled to the work position by personnel or a vehicle, the anti-tip outriggers are extended, and the platform is ready for lifting. It is particularly well suited to the following scenarios: equipment maintenance and lighting replacement in factory workshops; stocktaking and inventory management on high racks in warehouses; exterior wall painting and curtain wall installation on construction sites; maintenance of station and airport concourse facilities; servicing of municipal street lights, traffic signals, and surveillance poles; and routine maintenance in public buildings such as shopping malls, hospitals, and schools. Power is readily available from a standard 220V socket — no charging wait, plug in and work.

Selection Guide

The SJY series offers 12 standard models. Selection is primarily based on two criteria: lifting height and load capacity. For heights of 4–8 m, choose the SJY0.5-4/6/8 (500 kg) — suitable for routine maintenance. For heights of 8–12 m, choose the SJY1.0-8/10/12 (1000 kg) or the SJY2.0-12 (2000 kg) for heavy-duty requirements. For heights of 12–16 m, choose the SJY0.5-14/16 or the SJY1.0-14 (1000 kg/14 m) to cover high-level servicing. Power supply selection: where 380V three-phase industrial power is available, a three-phase motor is preferred for smoother operation; where only 220V single-phase supply is available, choose the single-phase option. Table dimensions increase with model size — the SJY0.5-4 has a table of 1720×1080 mm, while the SJY1.0-14 offers 2600×1340 mm, providing ample space for multi-person teams and material placement.

Operating Instructions

Positioning: Connect the tow bar to a towing vehicle or pull the unit manually to the work location. On level ground, choose a flat, even surface.

Extending the outriggers: Pull out the four anti-tip outriggers and tighten the anchor feet to ensure even load distribution across all four outriggers and a level, stable chassis. Never step onto the platform with the outriggers retracted or unlocked.

Connecting the power supply: Verify that the supply voltage matches the motor nameplate rating (220V or 380V). The cable cross-section must be no less than 2.5 mm². Route the cable away from walkways to prevent tripping hazards.

Lift operation:Press and hold the UP button until the platform reaches the desired height; release it to stop automatically (the limit switch cuts power at full lift). To lower, press and hold the DOWN button — descent speed is smooth and fully controllable.

Operating Safety: The operator must remain on the platform while it is moving. Never push the chassis or adjust the outriggers during operation. After lowering the platform to its lowest position, retract the outriggers before towing the unit to a new location.

FAQ

Q: What is the difference between the SJY towable hydraulic lifting platform and a self-propelled lift?

A: The SJY series features a towable design with no self-propulsion — it must be pulled or towed to the work position by personnel or a vehicle. This makes it simple in construction, low in cost, and easy to maintain. A self-propelled lift, on the other hand, has its own drive system (battery-powered) and can be driven and raised from the platform. The advantage of the SJY is plug-and-play power (220V/380V selectable) with no charging downtime, making it ideal for jobs with multiple fixed workstations. The drawback is that the platform must be lowered and the unit re-towed to relocate, making it best suited for maintenance tasks at relatively fixed positions.

Q: How do I choose the power supply voltage? Which is better, 220V or 380V?

A: A 380V three-phase motor runs more smoothly and draws less current at the same power output, so 380V is the preferred choice where industrial power is available. A 220V single-phase motor can be plugged into a standard outlet, which is more convenient, but the motor draws a higher starting current — we recommend a cable cross-section of at least 2.5mm². There is no noticeable difference in lifting speed or operational stability between the two; the choice depends mainly on the power supply available at your work site.

Q: What are the requirements for using the anti-tip outriggers?

A: Before operation, you must extend all four anti-tip outriggers and tighten the anchor bolts to ensure all four legs make even contact with the ground and the chassis is level and stable. The ground bearing capacity must be no less than 1.5t/m². Steel or wooden plates can be placed under the outriggers to prevent sinking. Never lift or board the platform with the outriggers retracted — the anti-tip outriggers are the first line of safety for elevated work.

Q: Can the towable lifting platform be used on a slope?

A: No. The SJY series requires a flat, hard work surface with an inclination of no more than 2° (side-to-side) / 3° (front-to-back). Operating on a slope shifts the center of gravity and increases the risk of tipping. If work near a slope is unavoidable, tow the unit to a level position before raising the platform.

Q: In the model SJYO.5-10, what do 0.5 and 10 stand for?

A: In SJYO.5-10, "0.5" denotes a rated load capacity of 0.5 tons (500kg), and "10" denotes a maximum lifting height of 10m. Likewise, SJY1.0-12 means a 1-ton capacity and 12m lift height. The model naming convention is consistent, making it easy to identify specifications at a glance. The SJY series offers a maximum load capacity of 2000kg (SJY2.0-12) and a maximum height of 16m (SJY0.5-16), covering the vast majority of towable lifting applications.

Q: What maintenance precautions should I take?