Beam-carrying gun car of gun car

Cannon car is a precast beam transport machine specially designed for highway bridge erection. It consists of two independent operating mechanisms (active vehicle and passive vehicle). The main vehicle is equipped with a four-cylinder or six-cylinder diesel engine, which provides driving force for the whole vehicle after four-stage deceleration. The final drive is a big gear or planetary gear drive. Set hydraulic steering and air braking functions. Generally, there are multiple forward gears and reverse gears. The auxiliary vehicle is equipped with a single-cylinder diesel engine to provide power for hydraulic steering. The beam-transporting gun truck has the functions of transporting the beam and feeding the beam into the bridge-erecting machine (the beam pieces are transported under the gantry crane in the precast beam yard and transported to the bottom of the bridge-erecting machine, commonly known as the transportation tool of the auxiliary bridge-erecting machine), which is mainly suitable for the bridge-erecting machine site and the precast beam yard. 1. The driver of the girder vehicle must have a driver's license, and the bell man and foreman must have corresponding valid certificates to prevent unlicensed work.

2. Before use, the operator must check the following conditions of the moving parts of the beam carrier: whether the tire pressure is enough, whether the engine water tank is full, whether the steering gear rotates flexibly, whether the braking device is sensitive, and whether the steering adjustment device is in good condition.

3. The road that the girder vehicle passes through must be checked, and the roadblocks should be removed in time. We should master the pressure on the pavement, and reinforce the pavement with pressure lower than the tire pressure of the beam carrier in time. Uneven road sections must be filled in to keep the road surface smooth. When the beam carrier stops below the gantry crane (in the upper beam area), use the gantry crane to lift the beam to the top of the beam carrier.

4. When loading the beam, the center of gravity of the beam should fall on the longitudinal centerline of the car (the midpoint of the car direction adjusting device), and the deviation should not exceed 20 mm When loading the beam on the curve, the center of the beam can be slightly inclined to the longitudinal centerline of the car. After the beam is installed, it must be tied with a brace and chain block to prevent the beam from overturning.

When the beam falls on the trolley, a hard plate or fiber layer rubber should be placed between the beam and the trolley support to protect the beam concrete.

5. For runtime startup, slow startup must be used. In the process of operation, the heavy beam must use low-grade (v≤ 15m/min), and high-grade (v≤30m/min) can be used when returning with no load.

6. When the girder vehicle is working, there must be a special person to observe and monitor it with the vehicle. If there is any abnormal situation or abnormal sound, the driver should be informed to stop immediately, and the operation can continue only after troubleshooting.

7. sundries, tools, etc. Can not be placed on the beam transported by the beam bracket.

8. When feeding the beam, the beam carrier must slowly move into the tail of the bridge erecting machine. The driver must concentrate and obey the signalman's command. The car cannot collide with the bridge erecting machine.

9. When feeding the beam, the speed of the beam carrier must be consistent with the speed of the crane on the bridge erecting machine.

10. The girder is completely lifted by the bridge erecting machine. After moving forward and leaving the tail, make sure that there are no obstacles around the girder carrier, and then return from the tail of the bridge erecting machine.

1 1. Pavement treatment of tire beam carrier.

A. The longitudinal slope of the road is not more than 4% and the transverse slope is not more than 3%.

B. The wet joint between two spans is connected by a frame connecting plate welded with 10mm steel plate and 10 I-beam, so as to ensure that the beam carrier can cross the wet joint smoothly and reliably. The vertical reinforcement on the beam surface is temporarily bent to avoid puncturing the tire, and the tensioning pit is temporarily filled with sandbags or sleepers.

C. When the beam carrier is walking on the box girder, there must be two pieces of box girder connected together (the wheel distance of the beam carrier is 205cm), so that the beam carrier can walk on the webs of the two pieces of beams. The surface of box girder must be treated accordingly. First, two steel bars of box girder wings must be welded.