| model | platform size | total size | height | weight | Max working radius | net weight |
| TGZ-8 | 1200*800 | 5200*1585*1900 | 8m | 200KG | 4.5M | 1500kg |
| TGZ-10 | 1200*800 | 5400*1665*1900 | 10m | 200KG | 5M | 1700kg |
| TGZ-12 | 1200*800 | 6400*1665*1900 | 12m | 200KG | 6M | 2000kg |
| TGZ-14 | 1200*800 | 6200*1730*2100 | 14m | 200KG | 8.5M | 2350kg |
| TGZ-16 | 1200*800 | 7000*1730*2200 | 16m | 200KG | 9M | 2600kg |
| TGZ-18 | 1200×800 | 7100×1850×2260 | 18m | 200KG | 10 | 4300kg |
| TGZ-20 | 1200×800 | 7700×1850×2260 | 20m | 200KG | 12M | 4450kg |
Towable Articulating Boom Lift – Rotation and Lifting Mechanism Explained
A Towable Articulating Boom Lift, also known as a trailer-mounted aerial work platform, is a highly versatile lifting machine designed for working at height in construction, facility maintenance, tree trimming, and utility installation. Its compact trailer structure allows it to be easily transported by vehicles, while its articulated boom system enables operators to reach complex working positions.
The key technical features of this machine lie in its hydraulic lifting system and slewing rotation mechanism, which together allow the platform to move vertically, horizontally, and around obstacles with precision.
Articulating Boom Lifting System
The lifting movement of the towable boom lift is primarily achieved through a multi-section articulated boom structure powered by hydraulic cylinders. This design allows the platform to move smoothly in multiple directions.
1. Main Boom Lifting Mechanism
The main boom is connected to the turntable base through a heavy-duty hinge point. A large hydraulic lifting cylinder is installed between the chassis and the boom.
When the hydraulic pump supplies pressurized oil:
The hydraulic cylinder extends, pushing the boom upward.
The boom rotates around the base hinge, raising the entire arm.
When the cylinder retracts, the boom lowers gradually.
This mechanism converts hydraulic linear motion into rotational lifting motion, allowing the boom to achieve stable elevation while maintaining structural rigidity.
2. Secondary Articulating Boom
Above the main boom is a secondary articulating arm, which increases flexibility and working reach.
This section uses an additional articulation hydraulic cylinder that:
Adjusts the angle between the main boom and the upper boom
Allows the platform to reach over obstacles such as roofs, equipment, or tree branches
Improves positioning accuracy during aerial work
The articulated structure enables the machine to perform "up-and-over" movements, which are not possible with straight telescopic lifts.
3. Platform Leveling System
To ensure operator safety, the work basket remains horizontal during lifting. This is achieved through a mechanical or hydraulic self-leveling linkage system.
The system automatically adjusts the platform angle as the boom moves, ensuring that the operator platform remains stable and level at all heights.
Hydraulic Rotation (Slewing) System
Another critical function of the towable boom lift is horizontal rotation, which allows the boom to cover a wide working area without moving the chassis.
1. Turntable Slewing Mechanism
The boom assembly is mounted on a rotating turntable located at the top of the chassis. The turntable is connected to the frame through a slewing bearing (slew ring).
The rotation is driven by:
A hydraulic motor
A worm gear or planetary reduction gearbox
A slewing ring gear
When the hydraulic motor operates, it drives the gearbox, which rotates the slewing ring and allows the entire boom structure to rotate around the vertical axis.
2. 360-Degree Continuous Rotation
Most towable boom lifts are designed to achieve 360° continuous rotation, providing a wide working radius without repositioning the machine.
This greatly improves efficiency in applications such as:
Building exterior maintenance
Lighting installation
Tree trimming
Warehouse maintenance
Hydraulic Power System
The lifting and rotation movements are powered by a compact hydraulic power unit, which typically includes:
Electric motor or gasoline engine
Hydraulic pump
Oil reservoir
Directional control valves
Hydraulic hoses and cylinders
The operator controls the boom movement through control levers or electronic joysticks, which regulate hydraulic oil flow to each actuator.
This hydraulic system ensures:
Smooth lifting motion
Precise positioning
Stable operation at high elevation
Stabilization System
Before lifting operations begin, the machine must be stabilized using four hydraulic outriggers.
These outriggers:
Extend outward from the chassis
Increase the support base area
Level the machine on uneven ground
Once deployed, they ensure the boom lift remains structurally stable during lifting and rotation.
Advantages of Towable Articulating Boom Lifts
A towable articulating boom lift offers several advantages compared with other aerial work platforms:
Easy transportation with standard vehicles
Flexible articulated boom for obstacle clearance
360° rotation for large working coverage
Compact storage and low transportation cost
Reliable hydraulic lifting system
Because of these benefits, trailer-mounted boom lifts are widely used in construction, facility maintenance, municipal engineering, and landscaping industries.
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