The tightening and control device of the roll gap measuring arm of the pincer-type online roll gap meter

Abstract

The invention discloses a tightening and control device for the roll gap measuring arm of a pincer type online roll gap meter. The device forms a transmission structure through a driving motor, a sprocket and a chain, and two sliders are arranged on the chain and located in a chute Driven by the drive motor, the upper connecting arm and the lower connecting arm with the hook end are respectively connected to two sliders and the hook ends are respectively against the outer edge sides of the upper measuring arm and the lower measuring arm, the trigger lever is hinged to the box, and the trigger switch is tightened and the unfolding trigger switch are arranged on the inner wall of the box through the saddle-shaped bracket, and when the trigger lever rotates along the hinge point, the tightening trigger switch and the unfolding trigger switch are respectively triggered. This device overcomes the defect that the traditional online roll gap meter will be damaged due to the large travel reverse feeding of the dummy bar under abnormal production conditions. It can automatically shrink when the roll gap gauge is running in the reverse direction, and the roll gap measuring head can automatically open when the roll gap gauge is running forward, ensuring the safe operation of the online roll gap gauge.

Description

technical field [0001] The invention belongs to the field of auxiliary equipment for continuous casting machines, and in particular relates to a tightening and control device for a roll gap measuring arm of a clamp-type online roll gap meter. Background technique [0002] The roll gap value of slab continuous casting is one of the most important parameters of the continuous casting machine, which directly affects the control of quality defects such as central cracks, segregation, triangular area cracks and corner transverse cracks of the slab. Abnormal roll gaps will also cause The service life of the main equipment of the casting machine such as the fan section is low, abnormal damage even leads to vicious accidents such as stagnation of billets. Under the requirements of slab quality control and service life improvement of equipment such as sectors, various diagnostic devices for testing the accuracy of parameters such as roll gaps of continuous casting machines have emerg...

AI Technical Summary

Problems solved by technology

However, the pincer-type online roll gap gauge installed in the middle area of ​​the dummy bar cannot avoid the depressed driving roll. At the same time, the scissor-type roll gap gauge is only suitable for one-way running detection. During internal operation detection, the roll gap of the continuous casting machine during the loading process can only be selected according to the installation direction of the roll gap meter or the roll gap of the casting machine when the dummy rod is pulled down during the pouring process; in addition, the continuous casting machine during the production process It is inevitable that some abnormalities will occur, especially when dealing with abnormalities such as short billets, the dummy rod needs to be sent out of the crystallizer backwards. Although guide plates can be set on both sides of the roll gap measuring head of the roll gap meter, this kind of guide plate is only suitable for short strokes When the online roll gap meter runs reversely with a large stroke, especially when it passes through the position of the driving roller with a small roll gap value during reverse operation, the roll gap measuring head of the roll gap meter will be damaged by a large radial force , in severe cases, even damage the internal mechanism of the roll gap meter

Images