Drop Deck Trailer · Lowbed Semi Trailer

3-Axle 120 Ton Lowbed Trailer for Excavator

Drop Deck Trailer do no longer have any factor boards mounted on their loading platform. They are in everyday used for long-distance freight transportation in logistics. This form of trailers is produced with immoderate stiffness foremost beam that goes via the whole trailer. The longitudinal beam in the the the front is commonly gooseneck type. The…

Drop Deck Trailer

Introduction

Drop Deck Trailer do no longer have any factor boards mounted on their loading platform. They are in everyday used for long-distance freight transportation in logistics. This form of trailers is produced with immoderate stiffness foremost beam that goes via the whole trailer. The longitudinal beam in the the the front is commonly gooseneck type. The pinnacle of core beam is from 4 hundred mm to 550 mm and the longitudinal beam is welded by means of computerized submerged arc welding machine. The the the front quit is dealt with with shot peen and the bypass beam penetrates the longitudinal beam and welds the whole trailer physique together.

Drop Deck Trailer are similar to flatbed trailers except they have two deck levels. The deck drops down after it clears the tractor axles, creating an upper deck and lower deck. The lower deck allows the trailer to haul taller loads than a flatbed trailer.

Drop Deck Trailer

 

Drop Deck Trailers are commonly used to transport heavy vehicles and machineries such as tractor heads and special vehicles, railway vehicles, mining winches, forestry machinery and equipment, agricultural machineries such as excavators, loaders, pavers, and lifting equipment, and other heavy weight goods.

Drop Deck Trailer

 

Specification of Drop Deck Trailer

 

3 Axle

4 Axle

Brand

Haoyue

Haoyue

Application

Heavy Duty Loading

Heavy Duty Loading

Axle

3 Axles

4 Axles

Loading Capacity

30 – 120 Tons

30 – 150 Tons

L*W*H

13000*3000*1760mm

13000*3000*1760mm

Ladder

Mechanical Spring/Hydraulic

Mechanical Spring/Hydraulic

Goose Neck Detachable

Available

Available

Multi-Axles

Available

Available

Steering Axles

Available

Available

Tire Style

Covered or Uncovered

Covered or Uncovered

Main Beam

Material: Q345/T700

Height: 500mm

Upper Plate: 24mm

Middle Plate: 14mm

Lower Plate: 26mm

Platform Thickness

4mm

Axle

3/4 Axles *13/16 Ton

Haoyue/FUWA/BPW/Other

Tire

9.00*22.5/6.5-20 (12/16 Pieces)

Steel/Aluminum

Rim

9.00*22.5/6.5-20 (12/16 Pieces)

Steel/Aluminum

Leaf Spring

90mm*13mm*10/90mm*16mm*10Pcs

Suspension System

Mechanical/Air Suspension

Ladder

Mechanical Spring/Hydraulic

King Pin

#50(2")/#90(3.5")

JOST/Other Brand,Changeable

Landing Gear

28 Tons Two Speed

JOST/Other Brand

Tool Box

Steel/Aluminum

Widened Parts

Available

Painting 

Polyurethane combination painting

 

Product Structure of Drop Deck Trailer

Drop Deck Trailer usually uses concave beam front end with gooseneck shape.  In the front of the gooseneck, usually uses concave beam front end with gooseneck shape.  In the front of the gooseneck, it is connected to the tractor head with kingpin and drive saddle, while in the rear it’s connected to the main weight frame.  Cargo platform is at the middle and wheel frame is at the very end of the trailer. Drop Deck Trailer is connected to the tractor head with kingpin and drive saddle, while in the rear it’s connected to the main weight frame.  Cargo platform is at the middle and wheel frame is at the very end of the trailer.

Drop Deck Trailer

The Frame Fixing Method

The frame fixing method is to fix the frame of trailer and the frame of the truck together to prevent the trailer’s suspension device from moving too much vertically. Three-axle balanced type, double-axle balanced type or rigid suspension type is usually used. A balance weight is installed between the front and rear leaf springs, which will maintain the deflection among the front and rear leaf springs the same amount and balance the force on the front and rear axles. Carbon trioxide gas shielded welding makes the trailer more durable with an elegant appearance. 

Drop Deck Trailer

 

Basic Concept

The Drop Deck Trailer has flat plate type, concave beam type and tire exposed structure. Its frame is step type and the longitudinal beam interface is I-shaped, which has the characteristics of high stiffness and high strength. The main plane of the frame pallet is low, which ensures the stability of transportation. It’s suitable for all kinds of construction machinery, large equipment and heavy weight steel.

Drop Deck Trailer

Specification

Brand Haoyue Haoyue
Application Heavy Duty Loading Heavy Duty Loading
Axle 3 Axles 4 Axles
Loading Capacity 30 - 120 Tons 30 - 150 Tons
L*W*H 13000*3000*1760mm 13000*3000*1760mm
Ladder Mechanical Spring/Hydraulic Mechanical Spring/Hydraulic
Goose Neck Detachable Available Available
Multi-Axles Available Available
Steering Axles Available Available
Tire Style Covered or Uncovered Covered or Uncovered
Main Beam Material: Q345/T700
Platform Thickness 4mm
Axle 3/4 Axles *13/16 Ton Haoyue/FUWA/BPW/Other
Tire 9.00*22.5/6.5-20 (12/16 Pieces) Steel/Aluminum
Rim 9.00*22.5/6.5-20 (12/16 Pieces) Steel/Aluminum
Leaf Spring 90mm*13mm*10/90mm*16mm*10Pcs
Suspension System Mechanical/Air Suspension
Ladder Mechanical Spring/Hydraulic
King Pin #50(2")/#90(3.5") JOST/Other Brand,Changeable
Landing Gear 28 Tons Two Speed JOST/Other Brand
Tool Box Steel/Aluminum
Widened Parts Available
Painting Polyurethane combination painting
Material Q345/T700
Height 500mm
Upper Plate 24mm
Middle Plate 14mm
Lower Plate 26mm

Configuration options to discuss

Lowbed Semi Trailer options below are described at product-family level in the 2025 catalogue. They are not a list of equipment automatically included with this model.

  • Mechanical or air suspension
  • Mechanical spring or hydraulic ramps
  • Detachable gooseneck, steering axles and widened parts are listed options
  • Covered or uncovered tyre arrangement
Should I choose ramps or a detachable gooseneck?

The catalogue offers both arrangements. Provide the machine approach requirements and loading process so that the appropriate arrangement can be specified.

For a quotation, include the cargo, dimensions, loaded weight, loading method, quantity and destination. Ask for the documents applicable to the agreed configuration.

Source: Vehicle Master Product Catalog 2025, PDF pages 13–15. Catalogue configurations are references; confirm the specification and documents for your selected order.

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