SU1548549A1 - Device for indicating half-coupling shift of safety clutches of roll drives of multistand mill - Google Patents

Abstract

The invention relates to pipe production, can be used on multi-stand rolling mills. The purpose of the invention is to increase the reliability of monitoring the shift of the coupling halves of the safety clutches of the roll drive drives of a multi-stand mill. The mismatch of the positions of the coupling halves is measured and its value is fed to the inputs of the indication and signaling units. 4 il.

Description

The invention relates to pipe production and can be used on rolling multi-mill continuous rolling mills (pipe rolling reduction, calibration and continuous mills).

The aim of the invention is to increase the reliability of monitoring the shift of the coupling halves of the safety clutches of the rolls of the multi-stand rolling mill.

On league. 1 - 3 shows the diagrams of the elements of the drive of the rolls of the stand of the multi-stand mill with the placement of safety mubt and inductive sensors; in fig. 4 is a block diagram of a device for controlling the shift of half an AMU.

The device contains two installed (welded) coaxially along the generatrix of two coupling halves 1 and 2 of the pre-burn. of the wounding coupling interconnected by shear safety

fingers 3, two core 4 inductive sensor 5. Safety muAtm installed on the connecting shafts, which transmit torque from the actuators 6 to the rolls of each of the stands 7 mnogokletevogo mill. The device contains two elements NOT 8, two elements AND 9 and element OR 10 on each safety coupling, and the output of the first inductive sensor 5 of each coupling is connected to one of the inputs of the first element AND 9, the other input of which is connected to the output of the second inductive sensor 5 the same coupling through the first element HE 8, the output of the second inductive sensor 5 of the same coupling is connected to one of the inputs of the second element AND 9, the second input of which is connected to the output of the first inductive sensor 5 of the same muyta through the second element 8 cops and 9 of each coupling

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connected to the inputs of the element OR 10 of the corresponding coupling, the outputs of which are connected to the inputs of the display unit 11 and the common element OR 12, the output of which is connected to the input of the signaling unit 13.

The device works as follows.

During normal operation of the continuous rolling mill, both coupling halves 1 and 2 of each safety clutch rotate synchronously. Anchors 4 inductive sensors 5 simultaneously pass under the windings of these sensors and from each pair of inductive sensors 5 pulses arrive at the elements NOT 8 and the outputs of the elements 9 and the pulses disappear simultaneously and the signal O is present at the output of the element OR 10. 13 do not work.

When the shear fingers of the safety clutch of any stand break, the pulses on elements 8 and 9 do not come and disappear simultaneously, at their output and output of the element OR 1 0 there is a signal, the corresponding signal goes to the corresponding LED of the display unit 11 and it lights up as that stand where the half coupling shift occurred. The same signal is fed to one of the inputs of the element OR 12 and turns on the alarm device 13. The mill operator receives

where the half coupling shift occurred when the safety fingers broke.

This completely eliminates the possibility of the contact of the fixing element with the sensor in the course of operation and ensures the elimination of the influence of interference and creates the possibility of reliable signaling with determination

cage numbers.

Claims (1)

Invention Formula i A device for monitoring the shift of the coupling halves of the safety luffers of the rolls of the stands of the multi- rolling mill, containing for each coupling two inductive sensors, each measuring which is located along the common forming coupling and rigidly connected with one of the coupling halves, and the display unit differing in that, in order to increase the reliability of control, it is equipped with two elements AND, two elements NOT, an OR circuit for each coupling and a display unit, and the output of the first inductive sensor of each coupling is connected to one of the inputs of the first elec cient And, the other input of which is connected to the output of the second inductive sensor is of the same coupling element through the first NOT to yield, torogo inductive sensor of the same coupling is connected to one of the inputs of the second AND gate, the second input of which che information about the fact of triggering pre-, the second element is NOT connected of the guarding cell and the number of the cage where it happened, on the basis of which it promptly takes measures to replace the shear safety fingers in the couplings.40 The invention provides improved control reliability and provides prompt detection of the cage number. During the course of the first inductive sensor of the same coupling, the outputs of the coupling elements are connected to the inputs of that OR of the corresponding coupling, which are connected to the inputs of the block and the common element OR, which is connected to the input of the decomposition unit. with the output of the first inductive sensor of the same coupling, the outputs of the elements AND of each coupling are connected to the inputs of the OR element of the corresponding coupling, the outputs of which are connected to the inputs of the display unit and the common element OR, the output of which is connected to the input of the alarm unit. 1 Yu