DF900D Nose-girder Positioning Beam Launcher

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DF900D Nose-girder Positioning  Beam Launcherf (DF900D BL for short)develop by us is one of our NDF’s advanced equipments specialized for erecting Class 900t Railway Box-girder Bridge.

With high manufacturing quality, it was developed and improved on the base of our DF900 simple-span type Lauching Girder and desiged with many excellent features by absorbing advantadges of same purpose equipments at home and abroad.

Applicable Scope

   DF900D Launching Girder is used to erecting Railway Precast Concrete Box-girder Bridge with span up to 32meters and weight up to 900tons.  For bridge type, it often used to  erect Double-track monolithic box- girder Bridge, and can meet  different span-beams’ erection (like 32m,24m and 20m) in one project.

   Besides the normal operation, it perfectly meets the needs to erect first-span and last-span beams and can be operated and exchange flexibly between many different construction conditions. And transported by our Elevating Transporter(ET), it can be moved from one place to another and pass through tunnels.


(1)Main Technical Specification:

&#61550   Work Rank: A3

&#61550   Hoisting Capacity : 900t

&#61550   Applicable Span: 32m,24m and 20m

&#61550   Anti-hoisting Impact Factor: 1.05

&#61550   Max. Hoisting Height: 7.2m

&#61550   One-span Forward Moving Speed:0~3.0m/min

&#61550   Factor of Safety Against Overturning:≧1.5

&#61550   Applicable Longitudinal Gradient:≤2.0%

&#61550   Applicable Curve Radius:≥600m

&#61550   Walking Speed of Beam-hoisting Trolley:0~3m/min

&#61550   Hoisting Speed of Beam-hoisting Trolley:

   Heavy Load:0~0.5m/min

  Idle Load:0~1.0m/min

&#61550Beam-hoisting Trolley:

              Transverse fine adjustment Speed :0~5.0mm/s

              Transverse fine adjustment Scope:±250mm

              Longitudinal  fine adjustment Speed:0~5.0mm/s

              Longitudinal fine adjustment Scope: ±250mm

&#61550   Max. Deflection Of Nose-girder:61.5mm

&#61550   Average Beam-erection Speed:2spans/8hours

                                       (totally about 8 kilometres long)              

&#61550   Dimension(Length× Width ×Height):

      1) Whole Machine Overall Dimension:

             Under Working:59.3m×17.1m×12.1m

             Under Transporting:65.5m×17.1m×13.1m

                                  (includes Dimension of itsTranporter)

     2)Max. Part Dimension while transported:11m×3.3m×2.3m

                                  (referring to Nose-girder Main Girder)

&#61550   Weight:

     1) Whole Machine Weight:525tons

     2) Max. Part Weight while transported:27tons

&#61550   Power Source:380V 4Ac

(equiped with 300Kw Diesel Engine)

&#61550   Drive mode:Hydrocylinder driven by Hydraulic

                           Station and other parts by electric motor

&#61550   Control mode:  By control cab and wireless remote control (2) Suitable working condition

   a. Max.working Altitude: ≤2000m

   b. Ambient temperature:-20C°~+ 50C°

   c. Wind power:working≤6 grade,non-working≤11 grade.

   d. The abutment supporting the Launching Girder should be level and  Project Site againsts dangers of flammability, explosive and corrosive gas.

   e. Designed with enough light to meet nighttimes working





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Q:Are there any good signs in the construction elevator door
Referring to the unified code of construction safety technology of GB 50870-2013, and the construction safety inspection standard JGJ59-2011
Q:Can you stir the mortar in a concrete mixer?
Vertical shaft concrete mixer can be mixed with mortar. Self-falling concrete mixer is not suitable to mix mortar, especially the mortar with large flow.
Q:What type of concrete mixer is needed for each hour of concrete 90 cubic meters?
If it's a theoretical one, it's going to build 90 lines per hour, which is 90 square hours per hour, and if it's actually 90 square, it's going to be at least 120 stations.
Q:What is the difference between a concrete mixer and a tanker?
Concrete mixers are also called concrete mixers, and they are called concrete transporters, which are actually a kind of thing What you said may be loaded tanker powder material tank car, is see that pull a big jar of cars on the road, is not only a transportation of concrete so strict said that contains both relations with is included
Q:What is the main function of elevator motherboard?
The elevator motherboard is different from each brand, and it functions like a computer motherboard
Q:How to transport the concrete in the construction site, and how to decorate it?
The transportation of construction site concrete is divided into horizontal transportation and vertical transport, and the horizontal transport can be used for mixing truck, dump truck, belt machine, concrete pump, etc. Vertical transportation has tower crane, door machine crane, car crane, tower belt machine, belt spreader, concrete pump car, concrete drag pump and so on. The arrangement of the vertical transport equipment shall be carried out without affecting the horizontal transport, which is convenient for the transportation of the unloading materials.
Q:How much water does a concrete mixer use every day?
Dosage, depending on your project and mixing station construction factory cleaning every day, because now the country's love the strict monitoring of environmental protection, to maintain clean our factory, is a lot of water to clean the work area. So the client had better prepare the pool to ensure the normal operation of the project.
Q:The concrete, a car, is a plate right? The mix of concrete, one machine at a time, is a dish right
The same is true of self-mixed concrete, but the amount of material is just the amount of raw materials, not the amount of concrete. If the ash bucket, so, you stir a plate, if the transport is not big enough, can also be a less ash, ash bucket may be half a plate of...... So, you say it's not accurate to say that the mixer is either a mixer or a mixture of dust, exactly the amount of a stirring.
Q:How to safely use concrete mixer
Concrete mixer operation method: 1. The concrete mixer should be placed in a firm place, with the support of the bracket or the support of the foot barrel, and cannot be supported by the tyre. Before the concrete mixer starts, check whether the controller is good. When the concrete mixer is hoisted in the hopper, it is strictly forbidden to pass or stop by the hopper and set up the mixer after the work is completed. When the concrete mixer is running, it is strictly forbidden to put the tools in the roller, and pay more attention to safety. When the concrete mixer is on site, it should be fixed in the mixer, cut off the power supply, and when it enters the mixer cylinder, the outside must be monitored. (the operator of the concrete mixer (driver) must be trained in safety technical training, qualified for examination, and will be held on the certificate and strictly prohibit non-driver operation. The concrete mixer must clean the inside, especially in the winter, which can prolong the service life by using no foreign material in the front roller.
Q:What is the main function of the construction elevator safety guard
Falling to a certain speed will automatically card death

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