Intermediate tank truck of continuous casting machine

Abstract

The invention discloses an intermediate tank truck of a continuous casting machine. The intermediate tank truck comprises a lifting mechanism, low legs and high legs, wherein the lifting mechanism comprises a bracket and four lifting oil cylinders, the four lifting oil cylinders are distributed at the periphery of the bracket, the low legs and the high legs are separately arranged at the two sidesof the bracket, the bracket is separately connected with the low legs and the high legs through the lifting oil cylinders, guide grooves are arranged in the low legs and the high legs in the verticaldirection, the two sides of the bracket are provided with guide wheels, the guide wheels are fixedly arranged on the bracket through rolling bearings, and the guide wheels are arranged in the guide grooves and can move upwards and downwards along the guide grooves. The moving friction wear of the equipment is reduced, the carrying capability of the intermediate tank truck is improved, the structure of the equipment is simplified, the weight of the equipment is reduced, building investment is reduced, maintenance quantity is reduced, the production efficiency is increased, and the running stability of the intermediate tank truck is improved.

Description

technical field [0001] The invention relates to the technical field of metallurgical equipment, in particular to a tundish car of a continuous casting machine. Background technique [0002] The tundish tank car is the key equipment in the steelmaking and continuous casting process. It is located on the continuous casting casting platform and is used to carry the tundish. According to the structure, it can be divided into double floor type (also called door type), high and low leg type (also called half door type) and full suspension type. With the development of steelmaking and continuous casting technology, the number of streams of continuous casting machines is increasing, and the capacity of tundishes is increasing. Generally, casting machines with more than 7 streams use double tundishes for casting, but in order to obtain better continuous The quality of the slab requires that the tundish has good metallurgical functions as well as a good flow field and temperature fie...

AI Technical Summary

Problems solved by technology

During the lifting process of the tundish, the sliding friction resistances at the four corners are different, coupled with the unbalanced load caused by the movement of the center of gravity of the tundish, this will have a negative impact on the synchronization of the four hydraulic cylinders of the lifting mechanism, amplifying the hydraulic pressure. The asynchrony of the control system itself, specifically: Assume that there are four lifting cylinders A, B, C, and D, and the A hydraulic cylinder moves slower than B, C, and D due to the error of the hydraulic control system. It happens that the sliding friction at the A position It is larger than the other three positions, and the speed of A is slower at this time. When the other three corners rise, the gravity of the middle tank will transfer to the A position, and the A slider will be subjected to a larger lateral force. , the increase in lateral force leads to greater friction, which forms a vicious circle. Once this happens, it is very difficult to solve

In addition, this tundish car structure is mostly used in continuous casting machines with less than 6 strands and a total span of less than 9m. When used in 8-strand continuous casting machines, the size of the tundish is too large to cause deformation. The previous solution is to use double tundish casting At this time, the tundish tank car is quite complicated, and the distance between the two streams in the middle must be widened, which not only increases the construction cost, but also increases the operating cost

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