Railway Bridge Girder Launcher Crane For Precast Beam Installation

Product Description

Railway Bridge Girder Launcher Crane is a kind of crane. Because it mainly erection road bridge, it is called bridge erecting machine. Its function is to transport the beam piece to the designated position. The main features of the bridge erecting machine are introduced below.

• The arm can move up and down, move forward and backward, swing the head to the left and right, can set up the inclined bridge (0-45 °), the slope bridge 5%, the small curve is convenient and fast;
• The whole machine adopts step-by-step advancement, and the guide arm passes through the hole;
• It adopts gear and rack drive, which has good self-locking performance.
• Relying on driving to drive the outriggers forward, no need to configure the outriggers vertical movement force;
• Use the electric machine to move horizontally to realize the full-scale mechanized falling beam;
• Adopt the hydraulic cylinder to push and add the whole machine to move the way, once the falling edge beam is in place;
• The outriggers use the driving power to achieve longitudinal movement and reduce the power of the whole machine;
• The electrical system is controlled by a programmable controller, with good interlocking performance, preventing two directions from acting simultaneously, effectively controlling misoperations, and ensuring safety and reliability.

Terms of Use

• After the alignment of the bridge erecting machine is completed, it is necessary to make a comprehensive and meticulous inspection of the alignment, focusing on checking whether the front outriggers are vertical, and whether the guide beam fishtail plate, buckle iron, and wheel blocks are firm. Before carrying out beam erection.
• Before the bridging machine is running, it must be checked whether the braking device is complete and good, the bridging machine must be in a normal and good condition, and the braking is flexible and reliable.
• Before hoisting operation, it should be tested once. After bundling the beam, the hoist should be braked 2-3 times, and then the beam should be lifted away a little. Wait for the situation to confirm that it can be officially operated. The front and rear hoisting beam hoist should have the same action and uniform force, so as to prevent the phenomenon that the hoisting load is too large and the beam body swings violently.
• Check the track before starting. There should be no people or obstacles on the ground and in the running range. Before lifting, check the sensitivity of the lifting and walking limit devices, and perform dry running first.
• When hoisting the beam, do not change the speed suddenly or reverse the car to avoid swinging of the beam.
• When lifting, walking and falling, the beam should be kept as horizontal as possible.
• When setting up the beam, a special person shall be set up to take care of the wire rope of the hoist beam trolley hoist. At the same time, a special person shall be set up at the pier to monitor the operation of the beam body.

Package & Delivery

Factors Affecting The Use Of Railway Bridge Girder Launcher Crane

• The influence of environmental temperature is also the main factor. The pre-arching should be controlled according to the design requirements when the bridge erection construction group is assembled. The heights of the rail tops on both sides of the longitudinal running track of the bridge erecting machine must be correspondingly level to maintain balance. The lateral running tracks of the front, middle and rear legs must be horizontal, and the spacing must be strictly controlled. The four tracks must be parallel.
• Unreasonable use of heavy lifting has a great impact on the deformation of the main beam.
• Improper repair Improper gas cutting and welding on the bridge will cause severe deflection of the main beam. Pay attention when changing the trolley track.
• The internal stress of the structure. Because the box-type main beam is a welded structure, the local heating during the welding process causes the metal to expand and contract, resulting in residual force. The unsuitable manufacturing process may also generate large internal stress. The webs of the main beam are not cut according to the requirements of arching. The upper arch of the main beam is obtained by flame heating deformation or by forcible means such as controlling assembly and welding processes.