Hot rolling underground coiling roll wiping device and roll wiping method

Abstract

The present invention discloses a hot-rolled underground coiling roll wiping device, which includes a fixed base. Fixed rotating shafts are respectively installed at both ends of the fixed base. A reciprocating cylinder is horizontally installed in the middle of the fixed base. A pressing cylinder is vertically arranged on one side of each fixed rotating shaft. The pressing cylinder is connected to a pressing mechanism. The pressing mechanism is sleeved on the middle part of the fixed rotating shaft. A swing frame is sleeved on one end of the relative inner sides of the two fixed rotating shafts. A number of polishing blocks are arranged on the swing frame. The present invention can clean the impurities attached to the surface of the roll in real time online, avoid the accumulation of impurities, and ensure the quality of the strip. It solves the problems of poor cleaning effect of the strip surface and low working efficiency before the existing hot-rolled strip steel enters underground coiling, enhances the environmental adaptability, reduces the maintenance difficulty and intensity, and improves the production efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel rolling, relates to a wiping roller device for hot-rolled underground coiling, and also relates to a method for wiping the roller of the above device. Background Art

[0002] Before the hot-rolled strip enters the underground coiling, although most of the laminar cooling and scale have been cleaned, there are still uncertain stubborn oxide residues on the strip surface. During the process of the pinch roll biting the strip into the coiler, some residues will stick to the pinch roll, and the surface quality of the subsequent strip passing through the pinch roll will be affected. Some imported wiping roller devices are also selected for some hot-rolled underground coiling, but due to high costs, poor environmental adaptability, high failure rates and other reasons, the use effects are not ideal. The conventional practice of the existing technology is to manually grind and clean during shutdown maintenance, but this practice seriously affects product quality and production efficiency. Summary of the Invention

[0003] An object of the present invention is to provide a wiping roller device for hot-rolled underground coiling, which solves the problems of poor cleaning effect and low working efficiency of the strip surface before the hot-rolled strip enters the underground coiling.

[0004] Another object of the present invention is to provide a method for wiping the roller of the wiping roller device for hot-rolled underground coiling.

[0005] A technical solution adopted by the present invention is: a wiping roller device for hot-rolled underground coiling, including a fixed base, fixed rotating shafts are respectively installed at both ends of the fixed base, a reciprocating cylinder is horizontally installed in the middle of the fixed base, a pressing cylinder is vertically arranged on one side of each fixed rotating shaft, the pressing cylinder is connected to a pressing mechanism, the pressing mechanism is sleeved on the middle of the fixed rotating shaft, a swing frame is sleeved at one end of the relative inner sides of the two fixed rotating shafts, and a plurality of polishing blocks are arranged on the swing frame.

[0006] The present invention is further characterized in that the swing frame includes two vertically arranged connecting plates, a wear-resistant plate extends out from the middle of each connecting plate, the reciprocating cylinder is a double-headed cylinder, the cylinder heads at both ends of the reciprocating cylinder contact the wear-resistant plate, a linear bearing is connected to the side of each wear-resistant plate away from the reciprocating cylinder, the linear bearing is sleeved on the fixed rotating shaft, a guide groove is fixedly arranged at the bottom of the connecting plate, the guiding direction of the guide groove is the same as that of the fixed rotating shaft, the guide groove is in a "C" structure, and the wear-resistant plate is slidably connected to the middle of the guide groove.

[0007] The pressing mechanism includes a swing arm, a rotating bearing is installed in the inner hole at the bottom of the swing arm, the rotating bearing is sleeved on the fixed rotating shaft, the rotating bearing rotates around the fixed rotating shaft, radial bearings are arranged at the bottom of the swing arm with their axes perpendicular to each other, the radial bearings are perpendicular to the axial direction of the rotating bearing, the bottom of the swing frame is fixedly connected to the radial bearings, and the radial bearings are in rolling connection with the bottom of the guide groove.

[0008] A plurality of arc-shaped polishing blocks are horizontally arranged at the top of the connecting plate, and the working surface of the polishing block is in an arc-shaped structure.

[0009] The fixed base fixes the fixed rotating shaft through a bearing housing. There is a clearance between the linear bearing and the rotating bearing sleeved on the fixed rotating shaft, and they will not contact each other.

[0010] A guide ring is arranged outside the linear bearing, and a seal is arranged outside the guide ring.

[0011] A telescopic protective sleeve is arranged on the exposed part of the fixed rotating shaft during movement.

[0012] The rotating bearing and the radial bearing adopt maintenance-free stainless steel bearings.

[0013] Another technical solution adopted by the present invention is: a method for wiping rolls of a hot-rolling underground coiler wiping roll device. The above-mentioned hot-rolling underground coiler wiping roll device is adopted, and the implementation is specifically carried out according to the following steps:

[0014] Step 1: Fix the fixed base on the lower cross beam of the pinch roll rack, open the pressing cylinder, the pressing cylinder drives the pressing mechanism to rotate, and the pressing mechanism drives the swing frame to rotate, so as to ensure that the polishing block approaches and presses the roll surface;

[0015] Step 2: Fix the pressing mechanism, rotate the pinch roll, and the swing frame drives the polishing block to wipe the roll surface in the circumferential direction;

[0016] Step 3: Open the reciprocating cylinder, drive the swing frame to perform axial reciprocating translation, eliminate the installation interval of the polishing block, and realize the wiping of the entire roll surface in an S-shaped trajectory.

[0017] The beneficial effects of the present invention are: The present invention can be used in an environment with high temperature, high humidity and a large amount of abrasive shedding during hot rolling, realizing online real-time wiping of the roll surface, avoiding impurity deposition and affecting the surface quality of the strip steel. Online real-time cleaning of the impurities attached to the roll surface, avoiding impurity accumulation and ensuring the strip quality; adopting maintenance-free and high-temperature-resistant fittings, setting multiple protections, enhancing the environmental adaptability, reducing the maintenance difficulty and intensity, reducing the shutdown and maintenance time, reducing the manual grinding and cleaning time, and improving the production efficiency. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the hot-rolling underground coiler wiping roll device of the present invention;

[0019] Figure 2 is a front view of the hot-rolling underground coiler wiping roll device of the present invention;

[0020] Figure 3 is a top view of the hot-rolling underground coiler wiping roll device of the present invention;

[0021] Figure 4 is a schematic structural diagram of the swing frame of the hot-rolling underground coiler wiping roll device of the present invention;

[0022] Figure 5 It is the left structural view of the hot rolling underground coiling roll wiping device of the present invention;

[0023] Figure 6 It is the front structural view of the pressing mechanism of the hot rolling underground coiling roll wiping device of the present invention;

[0024] Figure 7 It is the left structural view of the pressing mechanism of the hot rolling underground coiling roll wiping device of the present invention.

[0025] In the figure, 1. Fixed base, 2. Fixed rotating shaft, 3. Pressing mechanism, 4. Swing frame, 5. Pressing cylinder, 6. Reciprocating cylinder, 7. Polishing block, 8. Rotating bearing, 9. Radial bearing, 10. Linear bearing, 11. Swing arm, 12. Guide groove. Specific embodiments

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments;

[0027] The structure of the hot rolling underground coiling roll wiping device of the present invention is as Figures 1 to 3 shown, including a fixed base 1, fixed rotating shafts 2 are respectively installed at both ends of the fixed base 1, a reciprocating cylinder 6 is horizontally installed in the middle of the fixed base 1, a pressing cylinder 5 is vertically arranged on one side of each fixed rotating shaft 2, the pressing cylinder 5 is connected to the pressing mechanism 3, the pressing mechanism 3 is sleeved on the middle part of the fixed rotating shaft 2, a swing frame 4 is sleeved on one end of the relative inner sides of the two fixed rotating shafts 2, and a plurality of polishing blocks 7 are arranged on the swing frame 4. The pressing cylinder 5 provides a pressing force, the reciprocating cylinder 6 provides the power for reciprocating motion, and the polishing blocks 7 on the swing frame 4 wipe and polish the roll surface.

[0028] As Figure 4 shown, the swing frame 4 includes two vertically arranged connecting plates, wear-resistant plates protrude from the middle of each connecting plate, the reciprocating cylinder 6 is a double-headed cylinder, the cylinder heads at both ends of the reciprocating cylinder 6 contact the wear-resistant plates, a linear bearing 10 is connected to the side of each wear-resistant plate away from the reciprocating cylinder 6, and the linear bearing 10 is sleeved on the fixed rotating shaft 2. A guide groove 12 is fixedly arranged at the bottom of the connecting plate, the guide groove 12 and the fixed rotating shaft 2 have the same guiding direction, the guide groove 12 is in a "C" structure, the middle part of the guide groove 12 is slidably connected to the wear-resistant plate, under the action of the reciprocating cylinder 6, the swing frame 4 drives the polishing blocks 7 to press against the roll surface to perform reciprocating translational motion, and the guide groove 12 plays a role of linear guiding.

[0029] As Figure 5 、 Figure 6 and Figure 7As shown in the figure, the pressing mechanism 3 includes a swing arm 11. A rotating bearing 8 is installed in the inner hole at the bottom of the swing arm 11. The rotating bearing 8 is sleeved on the fixed rotating shaft 2, and the rotating bearing 8 rotates around the fixed rotating shaft 2. Radial bearings 9 are arranged at the bottom of the swing arm 11 with their axes perpendicular to each other. The radial bearings 9 are perpendicular to the axial direction of the rotating bearing 8. The bottom of the swing frame 4 is fixedly connected to the radial bearings 9, and the radial bearings 9 are in rolling connection with the bottom of the guide groove 12. When the pressing cylinder 5 acts, it drives the swing arm 11 of the pressing mechanism 3 to rotate, and the rotating bearing 8 rotates, so that the radial bearings 9 press the guide groove 12. The radial bearings 9 move linearly in the guide groove 12, and the radial bearings 9 provide a pressing force on the swing frame 4, driving the swing frame 4 to rotate. A number of torsion springs are installed at the top of the swing frame 4, the torsion springs are compressed, and the polishing block 7 presses the roller surface, completing the action of the pressing device.

[0030] The fixed base 1 fixes the fixed rotating shaft 2 through a bearing seat. There is a margin between the linear bearing 10 and the rotating bearing 8 sleeved on the fixed rotating shaft 2, and they do not contact each other. By fixing the fixed rotating shaft 2, the linear bearing 10 moves axially, and double guidance is set. The linear bearing 10 on the swing frame 4 moves axially with the fixed rotating shaft 2 as the guide. A special structural design is adopted in which the radial bearings 9 on the pressing mechanism 3 move axially with the guide grooves 12 at both ends of the swing frame 4 as the guide. The pressing rotation and axial movement are successfully separated, and all axial movements use rolling instead of sliding, greatly reducing the movement resistance. With a stable air source addition, the action is more flexible and smooth.

[0031] A number of arc-shaped polishing blocks 7 are arranged horizontally at the top of the connecting plate to wipe and polish the roller surface. The working surface of the polishing block 7 adopts an arc-shaped structure, which can effectively improve the uneven local stress condition when contacting the roller surface.

[0032] In an embodiment of the hot-rolled underground coiling roll wiping device of the present invention, the rotating bearing 8 and the radial bearing 9 of the pressing mechanism 3 adopt maintenance-free stainless steel bearings, which improve the environmental adaptability and reduce the maintenance difficulty. A guide ring is arranged outside the linear bearing 10 to enhance the guiding function. A seal is arranged outside the guide ring to prevent dust and water. A telescopic protective sleeve is arranged at the exposed part of the fixed rotating shaft 2 on the seal to strengthen the protection of the exposed part.

[0033] The working principle of the hot rolling underground coiling roll wiping device of the present invention is as follows: The pressing cylinder 5 pushes the pressing mechanism 3, and the pressing mechanism 3 drives the swing frame 4 to rotate, ensuring that the arc-shaped polishing block 7 effectively contacts the roll surface; as the roll rotates, the reciprocating cylinder 6 acts, causing the polishing block 7 to wipe and polish the entire roll surface in an S-shaped trajectory under the combined action of the roll rotation and the axial reciprocating translation. When the reciprocating cylinder 6 acts, the swing frame 4 and the linear bearing 10 are guided by the fixed rotating shaft 2, and the radial bearing 9 is guided by the guide grooves 12 at both ends of the swing frame 4. Under the dual guiding action, the swing frame 4 independently drives the polishing block 7 to perform reciprocating translation. During the reciprocating motion, the action of the pressing cylinder 5 is completed, eliminating the influence on the reciprocating motion and maintaining a stable output of the pressing force. The two actions are independent of each other and do not interfere with each other.

[0034] The roll wiping method of the hot rolling underground coiling roll wiping device of the present invention is specifically implemented according to the following steps:

[0035] Step 1: Fix the fixed base 1 on the lower crossbeam of the pinch roll rack, open the pressing cylinder 5, the pressing cylinder 5 pushes the pressing mechanism 3 to rotate, and the pressing mechanism 3 drives the swing frame 4 to rotate, thereby ensuring that the polishing block 7 approaches and presses the roll surface;

[0036] Step 2: Fix the pressing mechanism 3, rotate the pinch roll, and the swing frame 4 drives the polishing block 7 to wipe the roll surface in the circumferential direction;

[0037] Step 3: Open the reciprocating cylinder 6, drive the swing frame 4 to perform axial reciprocating translation, eliminate the installation interval of the polishing block 7, and achieve full roll surface coverage wiping in an S-shaped trajectory.

[0038] For the hot rolling underground coiling roll wiping device of the present invention, the entire device adopts the method of fixing the shaft and moving the linear bearing, solving the problem of bearing seat sealing. A seal is provided outside the linear bearing to prevent dust and water. A guide ring is provided, which has its own guiding function and can also play a certain self-cleaning role for the fixed rotating shaft. The structure is simple, the actions are independent, the operation is flexible, and it can realize online real-time wiping and polishing of the roll surface. It has strong applicability and is suitable for use in environments with high temperature, high humidity and a large amount of abrasive shedding in hot rolling.

Claims

1. The wiping method of the wiping roller device for hot-rolled underground coiling, using the wiping roller device for hot-rolled underground coiling, which includes a fixed base (1). Fixed rotating shafts (2) are installed at both ends of the fixed base (1). A reciprocating cylinder (6) is horizontally installed in the middle of the fixed base (1). A pressing cylinder (5) is vertically arranged on one side of each fixed rotating shaft (2). The pressing cylinder (5) is connected to a pressing mechanism (3). The pressing mechanism (3) is sleeved on the middle part of the fixed rotating shaft (2). A swing frame (4) is sleeved at one end of the relative inner sides of the two fixed rotating shafts (2). A number of polishing blocks (7) are arranged on the swing frame (4). The swing frame (4) includes two vertically arranged connecting plates. Wear-resistant plates protrude from the middle of each connecting plate. The reciprocating cylinder (6) is a double-headed cylinder. The cylinder heads at both ends of the reciprocating cylinder (6) contact the wear-resistant plates. On the side of each wear-resistant plate away from the reciprocating cylinder (6), a linear bearing (10) is connected. The linear bearing (10) is sleeved on the fixed rotating shaft (2). A guide groove (12) is fixedly arranged at the bottom of the connecting plate. The guiding direction of the guide groove (12) is the same as that of the fixed rotating shaft (2). The guide groove (12) is in a "C" structure. The wear-resistant plate is slidably connected to the middle of the guide groove (12). The pressing mechanism (3) includes a swing arm (11). A rotating bearing (8) is installed in the inner hole at the bottom of the swing arm (11). The rotating bearing (8) is sleeved on the fixed rotating shaft (2). The rotating bearing (8) rotates around the fixed rotating shaft (2). A radial bearing (9) is arranged on one side at the bottom of the swing arm (11). The radial bearing (9) is axially perpendicular to the rotating bearing (8). The bottom of the swing frame (4) is fixedly connected to the radial bearing (9). The radial bearing (9) is in rolling connection with the bottom of the guide groove (12). A number of arc-shaped polishing blocks (7) are horizontally arranged at the top of the connecting plate. The working surface of the polishing block (7) is of an arc structure. The fixed base (1) fixes the fixed rotating shaft (2) through a bearing seat. There is a margin between the linear bearing (10) and the rotating bearing (8) sleeved on the fixed rotating shaft (2), and they do not contact each other. A guide ring is arranged outside the linear bearing (10), and a seal is arranged outside the guide ring. An expansion protection sleeve is arranged at the exposed part of the moving fixed rotating shaft (2). The rotating bearing (8) and the radial bearing (9) are maintenance-free stainless steel bearings. It is characterized in that, The specific implementation is carried out according to the following steps: Step 1: Fix the fixed base (1) on the lower cross beam of the pinch roll frame. Open the pressing cylinder (5). The pressing cylinder (5) pushes the pressing mechanism (3) to rotate. The pressing mechanism (3) drives the swing frame (4) to rotate, so as to ensure that the polishing block (7) approaches and presses the roll surface. Step 2: Fix the pressing mechanism (3). Rotate the pinch roll. The swing frame (4) drives the polishing block (7) to wipe the roll surface in the circumferential direction. Step 3: Open the reciprocating cylinder (6), drive the swing frame (4) to perform axial reciprocating translation, eliminate the installation interval of the polishing block (7), and realize the wiping of the entire roll surface in an "S" shape trajectory.

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