Set lanzavigas Usabiaga
All lanzavigas is a device designed for mounting precast beams for bridges and viaducts. In short it is a bridge crane modular lattice beams composed of rectangular elements. These can connect to form two beams of 120 m in length. It has two lift trucks of 100 tons capacity each to shift the burden over the two trusses. The difference with a conventional crane lies in shuttle cars each of its support. Unlike translation carts only allow longitudinal movement on the beam rail, these possible translations of the lattice girders in the direction perpendicular to the beam rail. In this way the whole lanzavigas placed on the stirrup or on a vain has been mounted, can be launched to the next. Elements of the set lanzavigas
Usabiaga Lanzavigas
Usabiaga Lanzavigas
BEAM TRACK
Formed by two beams HEB 600 braced together by a square of side rail 30 mm in the upper wings. Stops placed at the ends of the beams prevent the assembly from leaving lengthwise. A distance of 1030 mm wheelbase HEB beams, gives overall dimensions 1330 mm wide, 630 mm in height and length of 15m, 17m and 20m which are used depending on the width of the lintel of the structure to be mount.
TENSOR
Chains rated load 10 tons quer lane connecting the beams fixing lugs in safety plugs and anchors on the board in anticipation lintels rollover potential side rail beams.
Lattice structure
Trusses consist of rectangular sections of 1.1 m wide and 4.2 meters high and 20 m long. The modules are formed by two beams IPE 360 in the upper chord and two beams IPE 500 at its bottom chord. With twelve modules of 20 m we can form two blades 120 feet long total.
SHUTTLE CARTS
They consist of two racks with four grooved wheels mounted on ball bearings. These racks are interconnected by a rocker embulonado so that the resulting element is a dual carriage with bearings on opposite sides and perpendicular directions. The upper rolling cart allows trusses moving in its longitudinal direction, the bottom of the cart moves the whole in the direction of the beam rail. Clamps placed on the sides of cars rolling bearing profiles embrace lanes running in both directions of preventing possible derailment.
LIFT TRUCKS
The whole beam launcher has two lift trucks consist of a frame with two grooved treads two wheels each that can be adjusted so that the bearing distended 5m, 6m or 7m between themselves depending on the separation which are mounted the two lattice girders. The winch, engine, gearbox and hook mounted on each carriage resulting in a lifting system which has the following characteristics:
Capacity: 100 tons.
Lifting height: 10 m.
Entrance portico AND CLOSING
Structural steel portal in the form of closed section profiles that are placed at the ends of lattice girders. These unite in solidarity between the two trusses.
Usabiaga Lanzavigas
Usabiaga Lanzavigas
Usabiaga Lanzavigas
Usabiaga Lanzavigas
JOINT ASSEMBLY
Fitting abutment 1 (highest bracket) to install the set lanzavigas.
It will need an area 65m long viaduct in the direction of riding
approximately 25m wide x along the step input beams, suitable for
stand the test of cranes and trucks that are used during assembly (axle loads of 20
tn approximately). • Download the material in the assembly area. The material is taken to set lanzavigas
job site in trucks loaded and unloaded by cranes from the same small
tonnage
- Staff: a team of editors.
- Equipment: Trucks transport.
- 50 ton crane for unloading
- The work will be the level of the platform to engage laspiezas trucks and at ground level when unhooking.
LAUNCHED
Main beams will be shifted using the engines of cars translational, throwing them toward the vain to ride until the end of the frame vertical than the stack where the dice are placed two meters leveling.
The lift truck closest to the entrance portico is moved to a closer laposición it. In this position, will engage a ballast of 20 tons a mode is a counterweight.
- Staff: 1 equipment assemblers
- Equipment: One of the workers of all lanzavigas handle the keypad from the stirrup. Another of the workers will support the first indicating the positions of the complex from a puntosobre the lintel. We will need to have access to the lintel, and prepare a lifeline Paraquad can engage in it by the safety harnesses.
MOUNTING ELEMENTS ON LINTEL
Using the second lift truck, will be the modules that make up the dice-leveling concrete, and assembled in three turrets on the lintel. This maneuver is repeated with the beam rail and trucks to leave translational transfer system mounted on the lintel.
The next step will be to support all lanzavigas on translation carts side inthe stack. This set focuses on the beam rail bracket and discharged the burden of 20 tons. In this way, with trucks as a rocker pivot on these and all cars will be supported on the bracket and battery.
- Staff: 1 equipment assemblers
- Equipment: 80 ton crane
One of the workers of all lanzavigas handle the keypad from the stirrup. Other operators will support the first indicating the positions of the complex from a point above the lintel. We will need to have access to the lintel, and prepare a lifeline so that they can engage in it by the safety harnesses.
MOUNT BEAMS
All lanzavigas, as its name suggests, is a device designed for mounting precast beams. Here are the maneuvers to perform in assembly
- Receiving beams.
- The beams are taken to the lanzavigas on a truck. The vehicle was reversing on the porch or portico entrance step.
- Once there, lift trucks at the ends of the main beam which will enter the beams, hooked one end of the beam to hook lift truck furthest from the truck.
- Maneuver starts to move the beam into the vacuum with combined lift truck rolling over the main beams and the truck backing up until the other end of the beam to be mounted at the height of lift truck hook yet is free. This anger lift truck unlocked and the translation is performed by the truck tractor.
LONGITUDINAL MOVEMENT
Attaching the second end of the beam to the second hook lift truck and the beam suspended from the two cars is carried on until the opening of an aperture which has to be mounted. When attaching the side of the tractor crashes the car 2 and the translation is done with the engine lift trucks.
The dolly is hooked onto the tractor and takes out lanzavigas blades to allow lateral movement thereof.
MOVEMENT Traversal
With an operator in the doorway and one on the bracket / board is made lateral movements. • At this time, moving all over the beams lanzavigas lane, let the beam on the projection of the supports and let go down hooks mounted on the beam supports.
Once supported and hold the hooks, they underpin the work beams with struts. Staff: 2 teams of fitters. Equipment: Trucks dolly for the beams. During these maneuvers will be two installation teams, one on the side of the entrance portico, in bracket or panel formed, and the other side of the portico of closure, on the lintel. The team hooked land side beams to lift trucks and check the positioning of the beam on the corresponding neoprene. One of his workers handled the lift trucks and translation from your side. On the other hand, the second computer checks the positioning of the beam on the corresponding neoprene and an operator control station handle the translation of the cars on the side of the portico of closure. Operators of both teams to handle all lanzavigas, to perform coordinated movements, will be permanently connected by radio.
The order of assembly of one span beams often follows. First are mounted on the ends. These are released focusing on the doorway until they are in the hollow of it and hooks are lowered until they are about 5 inches from the height of the supports of the beams as an additional security measure, so that lateral movements of the whole the beam is at a minimum distance of the lintel in anticipation of an accidental destabilization of the whole. At this time moving the joint rail beams take up his position at the ends of the span. Mounted the end, we continue riding the other, from the ends toward the center.
MOVEMENT BETWEEN VANOS
Mounted span joists, shuttering plates placed, rebar and concrete board, move the set lanzavigas to place on the following vain. All lanzavigas is mounted on an aperture in which the beams have been placed and has concrete slab. On the one hand, the beam rail (beam lane 1) will be supported on the board of the opening above and on the other (beam lane 2) on concrete cubes were used to level the set lanzavigas.
MANEUVERS
To place the pitcher on the next set vain to mount, will have to do the following: With all lanzavigas centered on the longitudinal and transverse mounted vain, and lift trucks on the end opposite the input beams, power translation engines longitudinal joint that moves to the step input beams. We will make this movement until the geometric center of the lattice formed by the blades set on the beam launcher rail is placed on the board. The auxiliary crane will be placed on the board, focusing on this, next to the entrance portico of the whole beam launcher. The auxiliary crane, place the counterweight 25 t between the two blades of the whole pitcher of 2m of the entrance portico. The crane auxiliary hook all launched by the portal of entry and tighten the shot to take a load of 1 t.
We will move the bridge beams lift the whole, from its position near the porch until they stuck close to the entrance portico. The auxiliary lift bridge is located on the beam will track which is supported on the given placement. With the cars in this new position, the auxiliary crane their burden will be varied, from the initial ton load of 23 tons or so. 98 There will be a simultaneous move of all longitudinal progress and actions lanzavigas tractels until the vanguard of the whole launcher, six feet beyond the position of the battery / threshold of the next vain to ride. The auxiliary crane, will be placed on the board, focusing on this, next to the entrance portico of the whole beam launcher. The auxiliary crane, place the counterweight 25 t between the two blades of all launcher to 2m of the entrance portico auxiliary crane hook launcher set by the entrance portico and tighten the shot entering the whole load to separate launcher trucks translation of the beam near the lane entrance portico Using the auxiliary lift bridge, the cars will be removed translation of the beam-side lane closure gate and left between the two blades formed on the board. The lower auxiliary crane hook, making the whole swinging pitcher to leave with an upward slope of approximately 2.
With the lifting bridge beams closest to the entrance portico, will engage the counterweight 25 t be tensioned hoisting ropes leaving the counterweight resting on the ground. Using the auxiliary lift bridge, the dice are placed above the lintel leveling / pillar of the following vain to ride. Using the auxiliary lift bridge, we will raise the beam lane closest to the entrance porch and placed it on the dice leveling placed on the stack / threshold of the next vain to ride. Using the lift bridge auxiliary tanks are mounted on the beam translation placed on the dice lane placement. It released 25 t counterweight down hook lift bridge closest to the entrance portico. The rise auxiliary crane hook, causing the launcher set to quit flip horizontal. Supported on translation carts on the side of the portico of closure. The lifting bridge beams are placed between the two rail beams in the vicinity of the beam closest to the entrance portico. The lower auxiliary crane hook and disengage the entrance portico.
Usabiaga Lanzavigas
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