900t girder carrier to carry precast girder

Girder carrier: 1. Carrying capacity: 900t 2. Rubber type 3. Techking tires26.5R25 tyre series 4. Transmission system

(1) Main feature

1.stable quality

2. competitive price

3. brand-name parts

4. disributor offered

(2). Main feature, purpose and applicable road surface

1.  Main feature:

  a. Vehicle width 7000mm, overall length 43200mm

  b. the vehicle is high-tech products integrating with “motor, electrical device and hydraulic system”,

adopt hydraulic drive, hydraulic suspension and independent steering for each walk bridge and frame hydraulic elevating leveled, using technical grade microcomputer to control and drive, swerve, go up and down, levelling, as well as realize many kinds of running modes such as direct movement, diagonal movement, “splay” type swerve and semi “splay” type swerve.

The whole machine moves very flexibly to achieve driving without slipping or with less slipping and to complete work task in smaller working site

c. Select and use excellent general parts and standard components during design, all main auxiliary equipments are of famous brand at home and abroad, combination property and engineering level of the whole machine reach international advanced level.

2. Purpose

The girder transporter can transport 20m, 24m, 32m box-type concrete girder for double track railway special line for transport of passenger with speed 350km/h and 250km/h, from precast site to girder-erecting workstation via shortcut, roadbed, bridge (steel structure continuous girder and continuous girder with steel and concrete integrated included), and culvert, thus completes relevant girder-erecting work with bridge girder erection machine.

Girder transporter can also carry bridge girder erection machine to transfer to another site in short distance between bridges, to pass twin track tunnel on railway special line for transport of passenger

3. Applicable road surface

Dry road surface with flat cement or asphalt or consolidated stone without oil contamination.

(3) technical parameters

Load capacity		900t
Self weight		280t
Dimension (L x W x H)		38.6m x 6.95m x 3.4m(cab not included)
Moving speed	Empty load in flat	0-12km/h
	Heavy load in flat	0-5km/h
Working pressure	Heavy load in flat	21MPa
	Heavy load in climbing	30MPa
Climbing gradient		5°
Min radius in turning		38.4m  outside
		26.3m   inside
Power		2 x 420kw
Tyre shafts		16
Tyres		26.5R25, 16 X 4=64
Shaft distance		2.1M
Wheel distance		5.0/1.2m
Wheel pressure		< 0.6MPa
Grounding angle		8°
Off-grounding angle		13°

(4) general arrangements

1.Motor of HZY900 girder transporter is placed in rear part, frame girder in middle parts with 2 columns 16 axis, 2 wheels for each wheel set, 64 wheels in total;

a. front 5.5 axis for driving with 22 wheels in total, the tyres are Tsingtao Techking tires 26.5R25 tubeless pneumatic tire which decreases the ground connection pressure of tires to the fullest extent by increasing the contact area;

b. hydraulic pressure suspension device, hydraulic drive, electro-hydraulic steering and hydraulic element are of international famous brand

c. control system is of fieldbus control mode, both the front and rear part install driving cabs with same configuration, main electrical control elements are made in Finland

2. Torsion must be prevented on transporting box-type concrete precast girder.

Because the hydraulic suspension device is in group connection to realize three-point support with isosceles triangle structure, and the box-girder is of symmetrical section, the torsion won’t happen by just keeping its geometric center and center of girder transporter in line when loading

3.When coordinating with girder transporter to feed girder, the statically determinate three-point support is transferred to hyperstatic multipoint support which greatly increase support stability and reduce torsion of frame girder;

a. Because it is still transferred from statically determinate three-point support to hyperstatic multipoint support, the support counterforce does not change, the stress state of box-girder can be kept

b. After lifting one end of box-girder, the suspension center is one strong point, trolley for dragging girder forms two support point, statically determinate three-point is kept.

900t girder carrier to carry precast girder