The Leg And Chassis Technology of The BOB-LIFT Aerial Work Platform

The chassis and leg technology of the BOB-LIFT 27-meter high-altitude work vehicle reveals how it can provide the operator with a sense of security like walking on a flat surface at a height of several dozen meters.

The stability of an aerial work platform depends on two key factors: the contact area with the ground and the control of the center of gravity.

The ground contact area determines the "base point" of the vehicle. The wider the outriggers are extended, the larger the supporting area becomes, and the less likely the vehicle is to tip over. Just like when a person stands, spreading the feet apart is more stable than bringing them together; the principle is the same.

Center of gravity control determines the "balancing ability" of the vehicle. When the boom extends to a certain height and angle, the center of gravity of the entire vehicle will change. If the chassis design is unreasonable, the counterweight is insufficient, or the legs' support is unstable, it may cause the vehicle to tilt or even tip over.

Therefore, a qualified aerial work platform must invest sufficient effort in the leg system and chassis structure. The BOB-LIFT 27-meter aerial work platform has achieved industry-leading stability performance by focusing on these two aspects.

The BOB-LIFT 27-meter high-altitude work vehicle adopts an H-shaped outrigger design, which is recognized as one of the most stable solutions in the field of high-altitude work vehicles at present.

Where does the advantage of H-type outriggers lie?

Compared with traditional X-type or swing-leg type outriggers, the H-type outriggers have a larger support area when unfolded, with wider longitudinal and lateral support distances, which can effectively cover the overturning moments generated by the boom during operation in all directions.

Specifically, the H-shaped outriggers of BOB-LIFT have the following features:

Large span design: The lateral span between the front and rear outriggers reaches the industry-leading level, ensuring that the boom has a stable support foundation within a 360-degree rotation range.

Independent leveling function: Each leg can be independently adjusted in height. Even on uneven ground (such as slopes or bumpy roads), the automatic leveling system can ensure that the entire vehicle remains level.

Large-diameter support plate: The end of the leg is equipped with a large-area support plate, which effectively disperses the grounding pressure and prevents sinking on soft ground (such as mud or sand).

One-click extension: The hydraulic legs are controlled centrally. The operator can complete the extension and leveling of the legs from the cab without having to get out of the vehicle and operate manually. It is both fast and safe.

During actual testing, the BOB-LIFT 27-meter aerial work platform remained extremely stable even when fully loaded and with the boom extended to its maximum length. Whether it was the extension or retraction of the boom, the rotation of the slewing platform, the operator hardly felt any additional vibrations.

If the outriggers are the "feet" of an aerial work vehicle, then the chassis is its "framework". A sturdy chassis is the foundation for bearing the vehicle's weight and resisting deformation.

Before the BOB-LIFT 27-meter high-altitude work vehicle is put into production, it must undergo strict stability tests:

Static overturning test: Extend the boom to its maximum length, load the platform with 1.5 times the rated load, and ensure that the vehicle does not overturn or show obvious tilting.

Dynamic stability test: Simulate the actual working conditions, perform combined actions such as boom extension, slewing, and rotation, to test the dynamic stability of the entire vehicle.

Slope test: Deploy the outriggers on an inclined road surface to test the response speed and leveling accuracy of the automatic leveling system.

Wind load test: Simulate the stability of the vehicle under different wind speed conditions.

For high-altitude work, efficiency, height and flexibility are all important, but stability is the top priority.

BOB-LIFT, a 27-meter high-altitude work vehicle, with its solid H-shaped outriggers, high-strength chassis and intelligent safety system, provides reliable support for every high-altitude operation. Whether you are repairing the curtain wall on the exterior wall of a nine-story building or inspecting the bearings under a bridge across the river, BOB-LIFT can ensure your safe operation and smooth operation.

Because BOB-LIFT fully understands: Stability is the greatest respect for the operators.