CN219324617U - Multifunctional loop for bar steel rolling - Google Patents

Abstract

A multifunctional loop for rolling steel bar is composed of cage structure and oversized box, steel rolling channel in the middle of box, and two sides of said channel with enough space. The outlet side is provided with a movable baffle plate which is connected in a hinged manner. The sleeve lifting arm and the segmented guide groove are designed integrally, and a double-support structure is adopted. The looper platform is provided with two inverted L-shaped push-pull protective covers. A movable baffle is arranged at the outlet side. The utility model provides the loop device which is convenient and safe to operate and has better stability, the production efficiency and the accident handling efficiency are obviously improved, and the site safety environment is improved.

Description

Multifunctional loop for bar steel rolling

Technical Field

The utility model belongs to the technical field of metallurgy, and relates to auxiliary equipment for controlling bar continuous rolling tension and improving bar dimensional accuracy.

Background

In the continuous rolling process of the bar, loop devices are arranged between frames of the pre-finishing mill and the finishing mill group and used for buffering the dimensional change caused by the speed change of the rolling mill, and the rolling mill control system adjusts the speed of the rolling mill in real time through the loop amount, so that tension-free rolling is realized, and the purpose of improving the dimensional accuracy of the bar is achieved.

As a necessary auxiliary device for rod rolling, the prior art loopers have difficulty in meeting higher and higher production requirements in the aspects of stability, safety, convenience in operation and the like. Chinese patent

The utility model discloses a plurality of steel rolling loops, the structure is basically similar, adopts cantilever type to play the cover mechanism more, can all realize the tension-free rolling. Chinese patent

The disclosed multi-line loop for split rolling adopts an integrated design of a movable bench and a sleeve lifting roller, but a solution for adjusting the height of the sleeve lifting roller is not provided. Because the loop is an electromechanical integrated device, steel stacking accidents caused by various reasons are more in the rolling process, the loop device is still deficient in the aspects of running stability, safety, convenience in operation and the like, and particularly, flying steel causes great potential safety hazards to personnel and equipment in a production field.

Disclosure of Invention

In order to make up the defects of the existing steel rolling loop of the bar, the utility model aims to provide a loop device which is convenient to operate, safe and better in stability, remarkably improves the production efficiency and the accident handling efficiency and improves the site safety environment by utilizing the existing loop base to carry out brand new design on a loop table.

The technical scheme of the utility model is as follows:

the utility model provides a rod steel rolling is with multi-functional loop, includes loop frame, import compression roller, export compression roller, import bearing roller, export bearing roller, play cover roller, cylinder, play cover roller height adjustment device, compression roller height adjustment device, all rollers all set up oil gas lubrication and water cooling, play the lifting motion of cover arm by the cylinder control and by play the high spacing connecting rod control of cover, its characterized in that: the loop frame, the left protective cover, the right protective cover and the movable baffle at the outlet side form a cage structure, and the steel rolling channel is positioned in the middle of the box body of the loop frame.

The sleeve lifting roller is arranged on the sleeve lifting arm in a bolt fixing mode, the steel passing channel is positioned in the middle of the sleeve lifting arm, and the sleeve lifting arm is of a double-support structure and is fixed on the loop frame through a sleeve lifting arm rotating shaft.

The utility model has the beneficial effects that: the loop frame, the two push-pull protective covers and the movable baffle plates form a cage structure, an ultra-wide box body is adopted to be arranged, a steel rolling channel is positioned in the middle of the box body of the loop frame, and the ultra-large box body can play a role in buffering when a loop steel stacking accident occurs, so that the function of a waste box is realized; the double-support integrated sleeve lifting mechanism arranged in the loop frame works stably and is accurate to control; the movable baffle at the outlet side can avoid flying out of red steel when accidents occur, and meanwhile, the movable baffle can detect the displacement of the baffle through the displacement sensor, is interlocked with the rolling mill and an upstream flying shear control system, timely starts the automatic breaking function of the flying shears when steel is piled, stops the automatic steel feeding of a rolling line, and avoids the expansion of the accidents; the protection cover is closed in the production process, so that the red steel flies out when accidents are avoided, and the protection cover can be completely opened when rolling is stopped, so that cleaning of scrap steel and loop spot inspection and maintenance are not affected.

Drawings

Fig. 1 is a vertical cross-sectional view of the present utility model.

Fig. 2 is a front side perspective view of the present utility model.

Fig. 3 is a rear side perspective view of the present utility model.

Fig. 4 is a side perspective view of the sleeve assembly of the present utility model.

FIG. 5 is a cross-sectional view of the inventive set-up height limit link.

In the figure: 1-loop frame, 2-inlet side carrier roller, 3-inlet side compression roller, 4-inlet side compression roller height adjusting bolt, 5-loop lifting roller, 6-outlet side compression roller, 7-outlet side compression roller height adjusting bolt, 8-outlet side carrier roller, 9-outlet side expanding guide groove, 10-main water pipe, 11-cylinder, 12-left protective cover, 13-right protective cover, 14-outlet side movable baffle, 15-loop lifting height limiting connecting rod, 16-loop lifting arm, 17-loop lifting roller water pipe, 18-loop lifting roller rotating shaft, 19-cylinder connecting shaft, 20-fork connecting rod, 21-screw sleeve, 22-nylon sleeve, 23-locking nut and 24-articulated screw.

Detailed Description

The utility model is further described below by means of specific examples.

The multifunctional loop for steel rolling of bars is shown in fig. 1-3, and comprises a loop frame 1, an inlet side carrier roller 2, an outlet side carrier roller 8, an inlet side carrier roller 3, an outlet side carrier roller 6, a loop lifting roller 5, a loop lifting arm 16, an air cylinder 11, a left protective cover 12, a right protective cover 13, an outlet side movable baffle 14 and a loop lifting height limiting connecting rod 15, wherein the loop frame 1 is a steel structure welding piece, the left protective cover 12 and the right protective cover 13 can be opened or closed in a push-pull mode on a sliding rail of the loop frame 1, and the loop frame 1 is connected with other parts in a bolt connection mode. The loop frame 1, the left protective cover 12, the right protective cover 13 and the outlet side movable baffle 14 form a cage structure, and a steel rolling passage is positioned in the middle of the box body of the loop frame 1.

Fig. 3 shows: the main water pipe 10 is fixed on the non-operation side of the loop frame 1 through a pipe clamp, and continuous cooling is provided for the inlet side carrier roller 2, the outlet side carrier roller 8, the inlet side compression roller 3, the outlet side compression roller 6 and the loop lifting roller 5 through a hard pipe and a soft pipe. All rollers are internally provided with rolling bearings and oil-gas lubrication.

Fig. 4 shows: the sleeve lifting roller 5 is mounted on the sleeve lifting arm 16 in a bolt fixing manner, the steel passing channel is positioned in the middle of the sleeve lifting arm 16, and the sleeve lifting arm 16 is of a double-support structure and is fixed on the loop frame 1 through the sleeve lifting arm rotating shaft 18. The cylinder 11 is connected with the sleeve lifting arm 16 in a hinged connection mode through a cylinder connecting shaft 19, and drives the sleeve lifting arm 16 and the sleeve lifting roller 5 to act, so that the sleeve lifting and falling function is realized. The sleeve lifting height limiting connecting rods 15 are arranged at two sides of the air cylinder 11 and are fixed on the loop frame 1 in a hinged mode, and are hinged with the air cylinder connecting shafts 19, and the sleeve lifting height limiting connecting rods 15 are used for controlling the rotation angle of the sleeve lifting arms 16 so as to control the sleeve lifting height of the sleeve lifting rollers 5. The sleeve lifting roller water pipe 17 is fixed below the sleeve lifting arm 16 through bolts and pipe clamps, and can uninterruptedly cool the sleeve lifting roller 5.

Fig. 5 shows: the lifting sleeve height limiting connecting rod 15 comprises a fork-shaped connecting rod 20, a threaded sleeve 21, a nylon sleeve 22, a locking nut 23 and a hinged screw 24; the fork-shaped connecting rod 20 is sleeved on the screw sleeve 21 through clearance fit; the nylon sleeve 22 is sleeved on the screw sleeve 21 through clearance fit and is positioned between the fork-shaped connecting rod 20 and the screw sleeve 21, so as to play a role in buffering, and reduce impact force and noise between the fork-shaped connecting rod 20 and the screw sleeve 21. The threaded sleeve 21 is in threaded connection with the hinged screw 24, and the contraction length of the air cylinder 11 is adjusted by rotating the threaded sleeve 21 to adjust the length of the limit connecting rod 15; the locking nut 23 is in threaded connection with the hinge threaded sleeve 24 and is used for preventing the threaded sleeve 21 from loosening in the working process; the fork-shaped connecting rod 20 and the double lug seats of the air cylinder 11 are fixed on the same shaft of the loop frame 1; the articulated screw 24 is fixed to the same connecting shaft 19 of the lifting arm 16 as the ball joint of the cylinder 11.

During rolling, the loop can be selected to be put into or not put into. When not being put into, the loop is equivalent to a steel passing channel; when a steel signal is detected during casting, the cylinder rod of the cylinder 11 is retracted to drive the sleeve lifting arm 16 to lift, the blank forms an approximately parabolic running track through the adjustment of the rolling mill control system, and the running tracks of the blanks with different specifications and shapes can be stabilized through adjusting the inlet side press roller 3, the outlet side press roller 6 and the sleeve lifting roller 5 to proper heights. The inlet side carrier roller 2 and the outlet side carrier roller 8 can avoid the damage to the surface of the blank caused by sliding friction between the blank and the bottom plate of the guide groove.

When the loop is in steel stacking accident, red steel can be stacked in the box body of the loop table 1 due to the blocking of the box body of the loop table 1, the left protective cover 12 and the right protective cover 13 of the protective cover, so that the safety of surrounding personnel and equipment is ensured. The looper table 1 is provided with an outlet side movable baffle 14, and the accumulated red steel will cause the outlet side movable baffle 14 to rotate within a certain angle, and the displacement is fed back to the control system of the rolling mill and the flying shears through the sensor, so that the accident breaking function of the upstream flying shears is automatically started, and meanwhile, the rolling line stops feeding steel automatically, thereby avoiding the expansion of the accident. After the rolling mill is completely stopped, the left protective cover 12 and the right protective cover 13 are opened to clean the scrap steel in the box body. Thanks to the oversized box of the looper table 1 and the rapid response of the upstream flying shears, the accumulated scrap steel does not cause extrusion and winding, and the cleaning efficiency is remarkably improved.

The loop for rod steel rolling has stable and reliable loop control function and waste box function, and is a necessary safe and efficient multifunctional loop in rod steel rolling production.

Claims (2)

1. The utility model provides a rod steel rolling is with multi-functional loop, includes loop frame, import compression roller, export compression roller, import bearing roller, export bearing roller, play cover roller, cylinder, play cover roller height adjustment device, compression roller height adjustment device, all rollers all set up oil gas lubrication and water cooling, play the lifting motion of cover arm by the cylinder control and by play the high spacing connecting rod control of cover, its characterized in that: the loop frame, the left protective cover, the right protective cover and the movable baffle at the outlet side form a cage structure, and the steel rolling channel is positioned in the middle of the box body of the loop frame.

2. A multifunctional loop for bar rolling according to claim 1, characterized in that: the sleeve lifting roller is arranged on the sleeve lifting arm in a bolt fixing mode, the steel passing channel is positioned in the middle of the sleeve lifting arm, and the sleeve lifting arm is of a double-support structure and is fixed on the loop frame through a sleeve lifting arm rotating shaft.

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