CN-224222337-U - Off-line short stress finish rolling mill roll gap measurement and groove pull welding auxiliary device

CN224222337UCN 224222337 UCN224222337 UCN 224222337UCN-224222337-U

Abstract

The utility model discloses an off-line short-stress finish rolling mill roll gap measuring and groove rolling welding auxiliary device which comprises a frame body, a first driving component used for driving an upper roll of a short-stress finish rolling mill to rotate forwards, a second driving component used for driving a lower roll of the short-stress finish rolling mill to rotate reversely, and a controller. The first driving component and the second driving component are fixedly connected with the frame body. The controller is used for controlling the first driving assembly and the second driving assembly to simultaneously drive the upper roller and the lower roller of the short-stress finish rolling mill to rotate in opposite directions so as to measure the roll gap, or independently controlling the first driving assembly to drive the upper roller of the short-stress finish rolling mill to rotate so as to carry out groove stretch welding. The device can assist in measuring the roll gap and assisting in rolling groove pull welding under the off-line state of the short-stress finish rolling mill, can shorten the stop time of a steel rolling production line, improves the production efficiency, and effectively prevents the occurrence of safety accidents.

Inventors

JIAO JIAN
CHENG JIANXUN
LIU YANCHAO
BU TAO
GAO XING

Assignees

陕西龙门钢铁有限责任公司

Dates

Publication Date: 20260512
Application Date: 20250616

Claims (4)

1. An off-line short stress finish rolling mill roll gap measurement and groove draw welding auxiliary device, which is characterized by comprising: A frame body (1); the first driving assembly (2) is used for driving the upper roller of the short-stress finish rolling mill (7) to rotate in the forward direction, and the first driving assembly (2) is fixedly connected with the frame body (1); the second driving assembly (3) is used for driving the lower roller of the short-stress finish rolling mill (7) to reversely rotate, and the second driving assembly (3) is fixedly connected with the frame body (1); The controller (4) is used for controlling the first driving assembly (2) and the second driving assembly (3) to simultaneously drive the upper roller and the lower roller of the short-stress finish rolling mill (7) to rotate in opposite directions so as to perform roll gap measurement, or independently controlling the first driving assembly (2) to drive the upper roller of the short-stress finish rolling mill (7) to rotate so as to perform groove stretch welding; The first driving assembly (2) and the second driving assembly (3) are both provided with a speed reduction motor (5) and a universal shaft (6), and one end of the universal shaft (6) is fixedly connected with the speed reduction motor (5) in the axial direction; The distance between the axes of the output shafts of the gear motors (5) of the two driving components is equal to the set distance between the axes of the roller heads of the upper roller and the lower roller of the short-stress finish rolling mill (7), and the gear motors (5) of the two driving components are electrically connected with the controller (4); One end of a universal shaft (6) of the first driving assembly (2) far away from the gear motor (5) is fixedly connected with the upper roller axial direction of the short-stress finish rolling mill (7), and one end of the universal shaft (6) of the second driving assembly (3) far away from the gear motor (5) is fixedly connected with the lower roller axial direction of the short-stress finish rolling mill (7).
2. The off-line short stress finish rolling mill roll gap measuring and groove drawing welding auxiliary device according to claim 1, wherein the controller (4) comprises a first control circuit for simultaneously controlling the speed reducing motors (5) of the first driving assembly (2) and the second driving assembly (3) to rotate in opposite directions, a second control circuit for independently controlling the speed reducing motors (5) of the first driving assembly (2) to rotate, a change-over switch for switching the first control circuit and the second control circuit according to different working conditions, a start button and a stop button; The first control circuit is electrically connected with the speed reducing motor (5) of the first driving assembly (2) and the speed reducing motor (5) of the second driving assembly (3), and the second control circuit is electrically connected with the speed reducing motor (5) of the first driving assembly (2); The first control circuit and the second control circuit are electrically connected with the change-over switch, and the start button and the stop button are connected between the external power supply and the change-over switch.
3. The off-line short stress finish rolling mill roll gap measuring and groove drawing welding auxiliary device according to claim 2, wherein one end of the universal shaft (6) is fixedly connected with a shaft sleeve (61), and the other end is fixedly connected with a hexagonal sleeve (62) for axially and fixedly connecting with the roll head of an upper roll or a lower roll of the short stress finish rolling mill (7); The shaft sleeve (61) is fixedly connected with the gear motor (5) in the axial direction.
4. The off-line short stress finish rolling mill roll gap measuring and groove drawing welding auxiliary device according to claim 3, wherein the frame body (1) is of an upper-lower double-layer structure, a driving motor of the first driving assembly (2) is fixedly assembled on the upper layer of the frame body (1), and a driving motor of the second driving assembly (3) is fixedly assembled on the lower layer of the frame body (1).

Description

Off-line short stress finish rolling mill roll gap measurement and groove pull welding auxiliary device Technical Field The utility model relates to the technical field of steel rolling production, in particular to an off-line short-stress finish rolling mill roll gap measuring and groove drawing welding auxiliary device. Background In the rolling process of steel, a certain number of short stress rolling mills are generally required to form a production line for rolling billets. The roll gap measurement and the roll gap stretch welding of the short stress rolling mill are important links in steel production, the roll gap accuracy directly determines the dimensional accuracy, the roll gap stretch welding can increase the friction force between the roll gap and a rolled piece, the roll gap can be effectively bitten into the rolled piece, slipping is prevented, and stable rolling is ensured. The rolling mill is characterized in that a plurality of rolling mills positioned at the rear end of the production line on the steel rolling production line are short-stress finish rolling mills, the short-stress finish rolling mills are required to realize accurate thickness control and plate shape control, the rolling force applied to the rollers is large, under the condition of huge pressure and high-speed rotation, the surfaces of the rollers and high-temperature billets are in intense friction, so that the metal materials on the surfaces of the rollers are gradually worn, the roller gap is enlarged, the friction force is reduced, and the thickness precision of products is directly influenced. The replacement of the short-stress finish rolling mill on the production line with the spare short-stress finish rolling mill is frequently required on the steel rolling production line. In addition, the roll gap of the replaced spare short stress finish rolling mill needs to meet the set spacing and needs to be welded at the groove. In the prior art, when a standby short-stress finish rolling mill is adopted to replace a short-stress finish rolling mill, the whole production line steel rolling production process is usually stopped, then the standby short-stress finish rolling mill is installed on a production line, an on-site operation box is adopted to control the roll rotation of a single or a plurality of short-stress finish rolling mills on line, an operator measures the roll gap by using a measuring tool in the roll rotation process, and stands at the outlet end of the mill and uses electric welding and packing wires to weld at a rolling groove in a pulling manner. The method of firstly installing the standby short-stress finish rolling mill on the production line and then carrying out roll gap measurement and groove stretch welding on line can finish the replacement of the short-stress finish rolling mill, but the method leads to longer stop time of the production line and reduces the production efficiency of steel rolling. Disclosure of utility model Based on the above, it is necessary to provide an off-line short stress finish rolling mill roll gap measuring and groove pull welding auxiliary device, which can perform auxiliary roll gap measuring and groove pull welding on a standby short stress finish rolling mill under a production line, can reduce replacement time of the standby short stress finish rolling mill, further shortens stop time of a steel rolling production line, and effectively improves production efficiency. The utility model provides an off-line short stress finish rolling mill roll gap measuring and groove pull welding auxiliary device, which comprises: A frame body; The first driving assembly is used for driving the upper roller of the short-stress finish rolling mill to rotate in the forward direction and is fixedly connected with the frame body; The second driving assembly is used for driving the lower roller of the short-stress finish rolling mill to reversely rotate and is fixedly connected with the frame body; the controller is used for controlling the first driving assembly and the second driving assembly to simultaneously drive the upper roller and the lower roller of the short-stress finish rolling mill to rotate in opposite directions so as to measure the roll gap, or independently controlling the first driving assembly to drive the upper roller of the short-stress finish rolling mill to rotate so as to carry out groove stretch welding; The first driving assembly and the second driving assembly are respectively provided with a speed reducing motor and a universal shaft, and one end of the universal shaft is axially and fixedly connected with the speed reducing motor; The distance between the axes of the output shafts of the gear motors of the two driving components is equal to the set distance between the axes of the roller heads of the upper roller and the lower roller of the short-stress finish rolling mill, and the gear motors of the two driving components are electrically connected with