SIASUN Four-Lift Automotive Assembly Mobile Robot (Four-Lift Automotive Assembly Mobile Robot)

On most final-assembly lines the heaviest parts of the car arrive last, and they arrive from below. The powertrain, the axles and the battery pack have to rise into a body that is already waiting overhead, and they have to arrive square, level and at precisely the right station. Traditionally that work belongs to fixed lifts, pits and conveyors that are expensive to move once installed. The SIASUN Four-Lift Automotive Assembly Mobile Robot takes the joining task off the floor fixings and puts it on wheels: a self-navigating carrier with four synchronised lifting points, a floating platform and four-wheel steering, designed so that the assembly operation can travel to wherever the plant needs it next.

Robots Europa, based in Dublin, supplies the Four-Lift Automotive Assembly Mobile Robot to vehicle manufacturers, battery integrators and automation system integrators across the European Union and the DACH region. We prepare each quotation against your line layout, your process sequence and your station requirements, arrange delivery to your plant and remain your point of contact for technical support once the robot is in service.

Background

SIASUN and its mobile robot lineage

SIASUN is a Chinese manufacturer of robotics and automation equipment whose origins lie in the Shenyang Institute of Automation of the Chinese Academy of Sciences. Over the years the company has built up a broad range of industrial robots and autonomous mobile platforms, from assembly carriers such as this one through to heavy-duty transport robots for very large loads. Within the Factory Robots category, the assembly mobile robots occupy a particular niche: they do not merely move material from one place to another, they hold a component in position while people or other machines join it to the vehicle.

A family defined by the number of lifting points

SIASUN offers its automotive assembly mobile robot in four versions: the Single-Lift, the Dual-Lift, the Triple-Lift and the Four-Lift Automotive Assembly Mobile Robot described on this page. The name of each version describes how many independent lifting points carry the load. The Four-Lift version sits at the top of that progression, combining four lifting points in a scissor-lift structure with synchronised motion. It is intended for the most demanding stations in final assembly, where a module must be raised a long way, held stable and aligned accurately before it is fastened.

Technical Specifications

Specifications as published by the manufacturer; Robots Europa confirms them against the datasheet at quotation.

The manufacturer has not published the dimensions, the weight, the battery capacity, the travel speed, the operating time, the charging method, the safety sensors, the IP rating or the supply voltage; these are confirmed at quotation.

What does four-point synchronous lifting change at an assembly station?

A heavy module such as a powertrain or a battery pack rarely carries its mass evenly. When a component of that kind is raised on a single central support, any imbalance shows up as tilt, and tilt is exactly what an assembly station cannot tolerate when bolt holes and connectors must line up with the body above. The Four-Lift robot spreads the load across four supports arranged in a scissor-lift structure, and the four points lift synchronously for higher stability and accuracy.

Each lifting point uses a spiral lift with a single-point load of 1,000 kg, a figure that includes the spring force. Together the structure is rated for a load capacity of 3500 kg, and the lifting stroke of 1050 mm gives the platform a long range of vertical travel. In practical terms, this means one carrier can bring a module up from a low transport height to the underside of the body without an intermediate lifting device, while the four supports keep it level throughout the movement.

How do the navigation accuracy and the floating platform work together?

Bringing a module to a station involves two different kinds of precision. The first is getting the vehicle itself to the right place on the shop floor; here the robot achieves a navigation accuracy of ±10 mm / ±1°, using a four-wheel steering drive and omnidirectional mobility that let it approach a station along the path the layout requires rather than the path a fixed track dictates.

The second kind of precision is the final fit between component and body. No vehicle body hangs in exactly the same position every time, which is why the lift platform floats: it allows X ±125 mm, Y ±50 mm and an angle of ±2°. That freedom lets the component be brought into line with its mounting points during the joining step, so that the remaining offset between robot and body is absorbed at the platform rather than forced through the fasteners. Combined with the option of an onboard operator for assisted assembly, the result is a station where the robot carries the weight and the person or fixture handles the last few millimetres.

Who is the Four-Lift Automotive Assembly Mobile Robot for?

The primary buyers are vehicle manufacturers running final-assembly operations in which powertrains, front and rear axles or battery packs are married to the body from below. For plants building electric vehicles, the battery station is often the heaviest and most precise joining operation on the line, and a synchronised four-point carrier is designed for exactly that kind of task.

The robot also suits plants that build several models on the same line. Because it adapts to multi-model, multi-station production environments and supports complex layouts and multi-process combinations, it allows a manufacturer to change the sequence or position of assembly stations without reworking fixed floor installations. Existing facilities with limited space for pits or conveyor lifts are a natural fit for that reason.

System integrators planning automated final-assembly cells form a third group, since intelligent fleet scheduling allows several robots to be coordinated across stations. Where a station involves lighter modules or fewer support points, the Single-Lift, Dual-Lift and Triple-Lift versions may be worth comparing, and Robots Europa can advise on that choice with the quotation.

What is the Four-Lift Automotive Assembly Mobile Robot used for?

1. Powertrain installation – raising engines, electric drive units or complete powertrain modules into the vehicle body from below.
2. Front and rear axle assembly – carrying axle modules to the station and holding them in position while they are fastened.
3. Battery pack mounting – lifting traction batteries to the underbody with four supports keeping the pack level.
4. Manned assisted assembly – serving as a working platform on which an onboard operator completes the joining step.
5. Multi-model final assembly – supporting lines that build several vehicle models across multiple stations.
6. Flexible and complex layouts – replacing fixed lifting equipment where processes are combined or stations must be repositioned.

Pricing and Availability

The Four-Lift Automotive Assembly Mobile Robot is supplied on a quotation basis, because each installation depends on the vehicle models, the station layout and the scheduling arrangement of the individual plant. Robots Europa prepares the quotation after reviewing your requirements. Delivery, customs and support are arranged together with the quotation, so that the full scope is clear before any order is placed. To start the process, please use the quotation request available on this page.

Frequently Asked Questions

What load can the Four-Lift Automotive Assembly Mobile Robot carry?

The robot has a load capacity of 3500 kg. Each of its four spiral lifting points has a single-point load of 1,000 kg, including the spring force.

How high can the platform lift?

The lifting stroke is 1050 mm. The four lifting points move synchronously to keep the load stable during the stroke.

How accurately does the robot position itself?

The navigation accuracy is ±10 mm / ±1°. The floating lift platform then allows X ±125 mm, Y ±50 mm and ±2° for final alignment with the body.

Can an operator work on board the robot?

Yes. The robot supports manned operation and enables assisted assembly with an onboard operator.

Can several robots work together on one line?

The robot features intelligent fleet scheduling and adapts to multi-model, multi-station production environments. The scope of a fleet installation is defined during the quotation.

Which drive system does the robot use?

It uses a four-wheel steering drive with omnidirectional mobility. This allows it to manoeuvre within complex layouts and serve multi-process combinations.

Where can I buy the SIASUN Four-Lift Automotive Assembly Mobile Robot and what does it cost?

You can buy it from Robots Europa, which supplies customers across the EU and the DACH region from Dublin. The cost depends on your configuration and project scope, so please request a quotation through this page.

Summary

Final assembly has always faced the same problem: the heaviest modules must meet the body from below, precisely and without tilt, yet the equipment that does this has usually been bolted to the floor. The SIASUN Four-Lift Automotive Assembly Mobile Robot turns that fixed operation into a mobile one. Four synchronised spiral lifting points in a scissor-lift structure carry up to 3500 kg through a 1050 mm stroke, a floating platform absorbs the last offsets between module and body, and four-wheel steering with omnidirectional mobility brings the whole station to wherever the layout demands. With support for an onboard operator, fleet scheduling and multi-model production, it is aimed at plants that want their powertrain, axle and battery stations to move as quickly as their model plans. For a quotation from Robots Europa, including delivery and support across the EU and the DACH region, this page is the starting point.