Crane Rail The braking structure functions

After the crane rail is installed on the crane beam, it is necessary to check whether the center line of the track is a straight line, and whether the track span and the top elevation of the rail meet the design requirements. The test results shall be recorded as completed data. The center line of the orbit check theodolite in crane beam, sighting in advance on the wall or roof truss putright center line of the two endpoints, are mirror method to pass the instrument center moved to the center line, and then every 18 m for measuring point, check if the center of the orbit has been online, allowable deviation of plus or minus 2 mm, otherwise, should readjust the orbit. Work is completed, the crane hook is not allowed to light hanging, and stagnant more than 3 meters high from the ground and outdoor gantry crane to put the car commonly known as electric hoist stagnation in the shelter place, want to turn off the power supply and lock rail gantry crane at work. The top elevation of crane beam should meet the design requirements. According to the elevation of the elevation line, take a distance from the side of the column, and set the design elevation point of the bull-leg surface on the column, as the basis of the whole flat ox and the pad. At the same time, a higher elevation of 5 ~ 10cm on top of the top of the top of the beam is measured and the surface of the beam is leveled. After the leveling of the beam surface, the level of the level of the bridge should be placed on the beam of the crane. The design requirements of the elevation of the beam surface shall be no more than plus or minus 3 ~ plus or minus 5mm. The stress condition of the rail is more complicated. During the process of use, the rail end is partially borne by the periodic impact load. Under the action of the train wheel, the rail tread has contact stress, rolling friction in locomotive operation and sliding friction during braking. The damage form of the track mainly includes fracture, tread wear and so on.

In order to adapt to the needs of high-speed railway transport, overloading, and in order to guarantee high speed train at run time, stability, comfort, security, and high operating efficiency of the brake structure of its role as: (1) the crane under lateral force produced by factors such as the car brake, safe walkway on the uniform constant load and live load; (2) guarantee the overall stability of the crane beam, the stability of the outer stability of the auxiliary truss and the overall stability of the side girder; (3) increase the lateral stiffness of the crane beam; (4) used as crane repair platform or safe passage. The brake structure has two forms of brake beam and brake truss, which can be used according to the crane working system and the width of the brake structure. In the middle column, the brake beam is composed of the brake plate and the relevant section of the crane girder on both sides of the column; In the side column, the brake beam is composed of the brake plate, the relevant section of the crane girder and the relevant section of the auxiliary truss. The pattern plate is used as the brake plate, so as to use the steel plate as the brake plate, the anti-skid measures should be adopted.