what is a multi axle trailer? How do the lowest height modular trailer work 680mm only in height скачать в хорошем качестве

what is a multi axle trailer? How do the lowest height modular trailer work 680mm only in height

https://www.heavydutymodule.com/heavy... Multi axle trailer, also known as modular trailer, hydraulic modular trailer. The internationally famous multi axle trailer manufacturers are: SCHEUERLE (Germany), NICOLAS (France), COMETTO (Italy), GOLDHOFER (Germany). The famous international using companies (large transport companies) are: MAMMOET (Netherlands), ALE (UK), Fagioli (Italy), SARENS (Belgium). 1. The main structure of the multi axle trailer 1) Main beam: welded into an I-shape with high-strength steel, and the lower part of the main beam at both ends of the module is provided with connecting lugs. 2) Auxiliary beam: welded with high-strength steel, and the main beam forms the bearing structure frame of the multi axle trailer 3) cross Beam: connect the main beam and the auxiliary beam. 4) Diagonal support: support the main beam and auxiliary beam. 5) End beam: steering end beam, connecting end beam and holding beam. 6) Suspension system: supported on the sub-beam, playing the role of supporting and connecting the axle. The suspension system includes a running system. 7) Steering system: transfer steering force through tie rod system. 8) Hydraulic system: provide and transmit hydraulic power for suspension and steering. 9) Braking system: including service brake and parking brake, which is composed of air circuit, control system and actuator. 10) Connecting device: connecting pin, connecting bolt, connecting block, etc. 11) Ancillary equipment: power pack, gooseneck, draw bar, control box, etc. 2. Suspension system 2.1 Composition of the suspension system 1) Suspension pivot: fixed on the multi axle trailer auxiliary beam with bolts. 2) Suspension arm: The shaft seat hole is installed between the suspension arm and the pivot, so that the suspension arm rotates to achieve steering under the drive of the steering tie rod. 3) Suspension fork: connect the suspension arm and the axle. 4) swing axle: connect the wheels. 5) Suspension cylinder: connect the suspension arm and the suspension fork, play a supporting role, and adjust the height of the platform. 6) Wheels: including wheels, brake hubs, brake shoes and tires. 3. Steering system 3.1 The steering system is mainly composed of steering pivot, steering hydraulic cylinder, steering longitudinal tie rod, steering cross tie rod, intermediate shaft, steering control panel, suspension and other components. 3.2.1 Transmission of automatic steering Traction rod → steering pivot→ front half longitudinal tie rod→ control disc → transverse tie rod → suspension → wheels. Front steering cylinders → steering circuits→ rear steering cylinders→ rear end beam pivots→ rear half longitudinal tie rods→ rear half steering control discs→ rear half tie rods→ rear half suspension → wheels. 3.2.2 Transmission of force steering Front half steering transmission: hydraulic power → front end beam control valve→ front end beam steering cylinder has a rod cavity→ front steering cylinder→ front steering pivot→ front longitudinal tie rod→ front steering control disk→ front cross tie rod→ front suspension arm → wheel steering. Rear half steering transmission: hydraulic power → front end beam control valve→ front end beam steering cylinder has a rod cavity→ front steering cylinder → hydraulic circuit→ rear end beam steering cylinder→ rear end beam pivot→ rear longitudinal tie rod→ rear steering control panel→ rear cross tie rod→ rear suspension arm → rear wheel steering. 3.3 Steering control mode 3.3.1 Automatic steering Automatic steering is driven by the tractor, and the front part of the multi axle trailer is transmitted by the tie rod (mechanical transmission). The hydraulic cylinder of the rear half by the front and rear steering control box is transmitted through the hydraulic circuit 3.3.2 force steering The force steering can be controlled by the front control box or the rear control box respectively. Steer the steering control valve handles on the front and rear control boxes to steer. When used under special conditions, it can also be controlled at the same time, but the front and rear operation should be coordinated 4. Gooseneck 4.1 Characteristics of the goose neck The power goose neck is a connecting device for the multi axle trailer and the truck to form a semi-trailer multi axle trailer. The multi axle trailer obtains the advantages of a semi-trailer, and the power gooseneck has its own characteristics. 4.1.1 Advantages: The load of the modular trailer can be divided into the saddle of the prime mover (fifth-wheel load), and the puller counterweight is not required. The driving trailer swings less, which can increase the speed. 4.1.2 Features: With hydraulic cylinder, it can realize the change of load pressed on the fifth wheel. With steering, it can realize automatic steering driven by the tractor and hydraulic power control steering.