A device for reducing foreign object indentation of hot-rolled coiled sheet

Abstract

The application relates to the technical field of hot rolling mills, and discloses a device for reducing foreign matter pressing into hot-rolled coiled plates, which comprises a frame, the frame being detachably installed on an upper water baffle through screws; a first motor, the first motor being fixedly connected with the frame, and a screw rod being fixedly connected with the output end of the first motor through a shaft coupling; and a storage frame, the storage frame being slidingly installed on the frame, and a threaded cylinder being fixedly connected with the storage frame, wherein the threaded cylinder is sleeved on the screw rod, and the surface of the screw rod is threadedly connected with the inner wall of the threaded cylinder; the device can effectively break and peel off large stubborn iron tumors on the surface of the water baffle which are sintered, hardened, and have strong adhesion, in combination with a mechanical chopping and removing cleaning mode; meanwhile, the device can clean residual fine iron filings and residues in the cleaning operation through high-pressure flushing and flexible scraping, eliminate plate surface cleaning blind areas, reduce iron tumor accumulation and regeneration, avoid iron tumor falling caused by rolling mill vibration, generate hidden troubles of foreign matter pressing in, and ensure the long-term clean and non-tumorous working state of the upper water baffle.

Description

Technical Field

[0001] This invention belongs to the field of hot rolling mill technology, and more specifically, relates to a device for reducing the intrusion of foreign objects into hot-rolled coils. Background Technology

[0002] Each stand of the hot strip finishing mill is equipped with an upper baffle plate at the inlet and outlet. This baffle plate is a flat, elongated structure spanning the width of the strip, with its lower surface facing the hot strip. It is used to shield the rolling cooling water and iron oxide scale from splashing, ensuring stable rolling conditions. In actual production, the upper baffle plate is in a harsh environment of high temperature, water vapor, and iron scale splashing for a long time. Its lower surface is prone to adhering to impurities such as iron oxide scale and iron filings. After being baked at high temperature and squeezed by rolling vibration, the impurities continue to accumulate and sinter, eventually forming large hardened iron nodules with high hardness and strong adhesion. This is the main source of foreign object indentation defects in hot rolled coils.

[0003] Currently, the common practice on-site is to use a single high-pressure water jet to clean the nodules on the upper baffle plate. However, by forming a water curtain through fixed nozzles to wash the plate surface, only loose floating skin and fine iron filings can be removed. For large, hardened iron nodules formed by long-term sintering, the impact energy of the water jet is limited, making it difficult to effectively peel off and thoroughly clean them. Moreover, the hardened iron nodules that are not removed will continue to grow, causing the nodules to lose their bond with the plate surface under the continuous vibration of the rolling mill during steel biting, tailing, and high-speed rolling. The detached hard iron nodules fall directly onto the surface of the running strip and are then pressed into the steel coil matrix by the rolls, causing defects such as pits, point-like indentations, and peeling on the plate surface, reducing the surface quality and finished product qualification rate of hot-rolled coils. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a device for reducing the intrusion of foreign objects into hot-rolled coils, comprising: a hot rolling mill; an upper baffle plate, wherein the upper baffle plate is fixedly installed on the hot rolling mill by screws; a scraper assembly, wherein the scraper assembly is disposed on the upper baffle plate and can adhere to the surface of the upper baffle plate to remove large-volume stubborn iron nodules and residual iron filings and slags from the plate surface by rotating and scraping, and collect and process the removed iron nodules, iron filings, etc.; and a crushing assembly, wherein the crushing assembly is disposed on the scraper assembly and can assist in crushing and high-pressure washing of large-volume stubborn iron nodules.

[0005] In a preferred embodiment of the present invention, the scraping assembly includes: a frame, which is detachably mounted on an upper baffle plate by screws; a first motor, which is fixedly connected to the frame, and the output end of the first motor is fixedly connected to a screw rod via a coupling; a storage frame, which is slidably mounted on the frame, and a threaded cylinder is fixedly connected to the storage frame, wherein the threaded cylinder is sleeved on the screw rod, and the surface of the screw rod is threadedly connected to the inner wall of the threaded cylinder; a bracket, which is fixedly connected to the storage frame; a second motor, which is fixedly connected to the bracket, and the output end of the second motor is fixedly connected to a first shaft rod via a coupling, wherein the surface of the first shaft rod is rotatably connected to the inner wall of the bracket; and a plurality of scraper blades, each of which is fixedly connected to the first shaft rod via a straight rod, wherein the plurality of scraper blades are arranged circumferentially, and the surface of the scraper blades is in contact with the surface of the upper baffle plate.

[0006] In a preferred embodiment of the present invention, a plurality of first rubber plates are fixedly connected to the first shaft, and the plurality of first rubber plates are arranged in a circumferential manner, wherein the surface of the first rubber plates is in contact with the surface of the upper baffle plate.

[0007] In a preferred embodiment of the present invention, the storage frame has a through hole and a perforated plate is fixedly connected to the storage frame. The scraping assembly further includes: a collection box, which is slidably connected to the inner wall of the through hole of the storage frame, and a screw plate is fixedly connected to the collection box, wherein the bottom of the collection box is a detachable double-layer filter plate; and bolts, which are threadedly connected to the inner wall of the screw plate, wherein the surface size and shape of the bolts are adapted to the size and shape of the inner wall of the perforated plate.

[0008] In a preferred embodiment of the present invention, a baffle is fixedly connected to the side of the storage frame away from the shovel bar, a circular hole plate is fixedly connected to the baffle, a spring rod is slidably connected to the inner wall of the circular hole plate, and a second rubber plate is fixedly connected to the spring rod. The baffle is fixed obliquely in the opposite direction away from the shovel bar, and the spring rod is composed of a rod and a spring. The two ends of the spring in the spring rod are respectively fixedly connected to the rod and the circular hole plate.

[0009] In a preferred embodiment of the present invention, a rubber column is fixedly connected to the frame, wherein the position of the rubber column corresponds to that of the storage frame.

[0010] In a preferred embodiment of the present invention, the material crushing assembly includes: a sleeve fixedly connected to a storage frame, the inner wall of the sleeve being rotatably connected to a second shaft via a bearing; a first gear fixedly connected to the second shaft; a second gear fixedly connected to the first shaft, the first and second gears being fitted with a toothed chain, wherein the gears mesh with the first and second gears respectively; a plurality of first arc-shaped blocks uniformly fixedly connected to the second shaft; a hole frame fixedly connected to a baffle, the inner walls of the plurality of holes of the hole frame being slidably connected to round rods; a plurality of second arc-shaped blocks fixedly connected to the plurality of round rods respectively, wherein the first and second arc-shaped blocks have the same surface size and shape; a plurality of return springs respectively fitted onto the plurality of round rods, wherein the two ends of the return springs are fixedly connected to the second arc-shaped blocks and the hole frame respectively; and a plurality of cutter holders fixedly connected to the ends of the plurality of round rods away from the second arc-shaped blocks, wherein the cutter holders are composed of plates and a plurality of metal cutters.

[0011] In a preferred embodiment of the present invention, a protective cover is fixedly connected to the bracket, and the protective cover is sleeved on the first gear, the second gear and the gear chain.

[0012] In a preferred embodiment of the present invention, the material crushing assembly further includes: a plurality of nozzles, the plurality of nozzles being uniformly fixed to a baffle; and a first pipe, the first pipe being fixed to the plurality of nozzles, wherein one end of the first pipe is provided with a connecting buckle.

[0013] In a preferred embodiment of the present invention, a second pipe is fixedly connected to the storage frame, and a pump is provided on the second pipe. One end of the second pipe is connected to the first pipe, and the other end is connected to the inner wall of the storage frame.

[0014] Compared with the prior art, the present invention has the following advantages: This invention combines mechanical shredding and scraping to effectively break and peel off large, stubborn iron nodules that are sintered, hardened, and have strong adhesion on the surface of the baffle plate. At the same time, it eliminates blind spots in the cleaning process by using high-pressure washing and gentle scraping to remove fine iron filings and residues left over from the cleaning operation. This reduces the accumulation and regeneration of iron nodules, avoids the risk of iron nodules falling off due to mill vibration, and prevents foreign objects from being pressed in. This ensures that the upper baffle plate remains clean and free of nodules for a long time. Attached Figure Description

[0015] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of a partial three-dimensional structure; Figure 3This is a three-dimensional structural diagram of the framework of the present invention; Figure 4 This is a three-dimensional structural diagram of the storage frame of the present invention; Figure 5 This is a three-dimensional structural diagram of the filter plate of the present invention; Figure 6 This is a three-dimensional structural diagram of the second rubber sheet of the present invention; Figure 7 This is a three-dimensional structural diagram of the shovel blade of the present invention; Figure 8 For the present invention Figure 7 A magnified view of a portion of the image; Figure 9 This is a three-dimensional structural diagram of the tool holder of the present invention.

[0016] In the diagram: 1. Upper baffle plate; 2. Scraper assembly; 21. Frame; 22. First motor; 23. Screw; 24. Rubber column; 25. Storage frame; 26. Threaded cylinder; 27. Collection box; 28. Bolt; 2801. Threaded hole plate; 2802. Perforated plate; 29. ​​Filter plate; 210. Support; 211. Protective cover; 212. Second motor; 213. First shaft; 214. Shovel bar; 215. First rubber plate; 216. Baffle 217. Plate; 218. Hole plate; 219. Spring rod; 210. Second rubber plate; 3. Crushing assembly; 31. Hole frame; 32. Sleeve; 33. Second shaft; 34. First arc block; 35. First gear; 36. Second gear; 37. Gear chain; 38. Round rod; 39. Second arc block; 310. Return spring; 311. Knife holder; 312. Nozzle; 313. First pipe fitting; 314. Second pipe fitting; 315. Pump. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0018] Reference Figure 1 and Figure 2 As shown, this embodiment discloses a device for reducing the intrusion of foreign objects into hot-rolled coils, comprising: a hot rolling mill; an upper baffle plate 1, which is fixedly installed on the hot rolling mill by screws; a scraper assembly 2, which is disposed on the upper baffle plate 1 and can adhere to the surface of the upper baffle plate 1 to peel off large-volume stubborn iron nodules and residual iron filings and residues from the plate surface by rotating and scraping; and a crushing assembly 3, which is disposed on the scraper assembly 2 and can assist in crushing and high-pressure washing of large-volume stubborn iron nodules.

[0019] Reference Figure 3-8 As shown, this embodiment discloses a scraping assembly 2 comprising: a frame 21, which is detachably mounted on an upper baffle plate 1 by screws; a first motor 22, which is fixedly connected to the frame 21, and the output end of the first motor 22 is fixedly connected to a screw 23 via a coupling; a storage frame 25, which is slidably mounted on the frame 21, and a threaded cylinder 26 is fixedly connected to the storage frame 25, wherein the threaded cylinder 26 is sleeved on the screw 23, and the surface of the screw 23 is threadedly connected to the inner wall of the threaded cylinder 26; and a bracket 210. The bracket 210 is fixedly connected to the storage frame 25; the second motor 212 is fixedly connected to the bracket 210, and the output end of the second motor 212 is fixedly connected to the first shaft 213 through a coupling, wherein the surface of the first shaft 213 is rotatably connected to the inner wall of the bracket 210; multiple shovels 214 are all fixedly connected to the first shaft 213 through straight rods, wherein the multiple shovels 214 are arranged in a circle, and the surface of the shovels 214 is in contact with the surface of the upper baffle 1. The high-speed rotation of the device can scrape off and peel away iron nodules adhering to the surface of the upper baffle plate 1, which then fall into the storage frame 25 for storage. This reduces the likelihood of stubborn iron nodules remaining on the upper baffle plate 1 and subsequently falling onto the strip surface, causing foreign objects to be pressed into and damage the strip surface, thus improving the cleaning effect on the upper baffle plate 1. In use, the frame 21 is first fixed to the upper baffle plate 1 with screws, and then the first motor 22 is started to drive the screw 23 to rotate. The rotation of the screw 23 drives the threaded cylinder 26 to move away from the first motor 22. The motor 22 moves in a certain direction, and the threaded cylinder 26 drives the storage frame 25 to move. The storage frame 25 drives the first shaft 213 and multiple shovels 214 to move through the bracket 210. At the same time, the second motor 212 is started to drive the first shaft 213 to rotate. The first shaft 213 drives the multiple shovels 214 to rotate. During the rotation, the shovels 214 adhere to the surface of the baffle plate 1 and remove the stubborn iron lumps. The removed iron lumps fall into the storage frame 25 for storage, thereby achieving the removal of stubborn iron lumps.

[0020] Reference Figure 5 and Figure 6As shown, this embodiment discloses that a plurality of first rubber plates 215 are fixedly connected to the first shaft 213. The plurality of first rubber plates 215 are arranged in a circle, wherein the surface of the first rubber plates 215 is in contact with the surface of the upper baffle plate 1. By setting the first rubber plates 215 to rotate with the first shaft 213, they can scrape off residual iron filings and residues in contact with the surface of the upper baffle plate 1 during the rotation, thereby further improving the cleaning effect on the surface of the upper baffle plate 1. The storage frame 25 has a through hole, and a perforated plate 2802 is fixedly connected to the storage frame 25. The scraping assembly 2 also includes: a collection box 27, which is slidably connected to the inner wall of the through hole of the storage frame 25. A screw hole plate 2801 is fixedly connected to the collection box 27, wherein the bottom of the collection box 27 is a detachable double-layer filter plate 29; and bolts 28, which are connected to the screw hole plate 2801. The inner wall of the perforated plate 2801 is threaded, and the surface size and shape of the bolt 28 are adapted to the inner wall size and shape of the perforated plate 2802. By setting the collection box 27 and the filter plate 29, the internal storage space of the storage frame 25 can be divided into three layers. The two filter plates 29 are used to separate and filter the stored iron nodules and iron filings, which facilitates the subsequent recycling of large-volume iron nodules. In use, the two filter plates 29 are first snapped and fixed in the collection box 27. Then, the collection box 27 is manually inserted into the storage frame 25 through the through hole, so that the perforated plate 2802 coincides with the inner wall of the screw plate 2801. At this time, the bolt 28 is manually screwed into the screw plate 2801 and the perforated plate 2802 to fix the collection box 27. When the iron nodules and iron filings enter the collection box 27, they are filtered by the two filter plates 29.

[0021] Reference Figure 3-5 As shown, this embodiment discloses a baffle 216 fixedly connected to the side of the storage frame 25 away from the shovel bar 214. A circular hole plate 217 is fixedly connected to the baffle 216, and a spring rod 218 is slidably connected to the inner wall of the circular hole plate 217. A second rubber plate 219 is fixedly connected to the spring rod 218. The baffle 216 is fixed obliquely in the opposite direction away from the shovel bar 214. The spring rod 218 consists of a rod and a spring. The two ends of the spring in the spring rod 218 are fixedly connected to the rod and the circular hole plate 217, respectively. By setting the baffle 216 and the second rubber plate 219, the storage frame 25 can be adjusted to allow the shovel bar 214 to move freely. 4. During the removal of iron lumps, the other side of the shovel bar 214 is used to intercept the splashed iron lumps and guide the intercepted iron lumps into the storage frame 25. This reduces the amount of iron lumps that splash out of the collection range of the storage frame 25 during the removal process, further improving the material collection effect. Rubber pillars 24 are fixed on the frame 21, and the positions of the rubber pillars 24 and the storage frame 25 correspond. By setting the rubber pillars 24, the storage frame 25 can be intercepted during the movement process, preventing the storage frame 25 from colliding with the frame 21, thereby improving the safety and lifespan of the storage frame 25 and the frame 21.

[0022] Reference Figure 5-9As shown, this embodiment discloses a material crushing assembly 3 comprising: a sleeve 32, which is fixedly connected to a storage frame 25, and a second shaft 33 rotatably connected to the inner wall of the sleeve 32 via a bearing; a first gear 35, which is fixedly connected to the second shaft 33; a second gear 36, which is fixedly connected to the first shaft 213, and a toothed chain 37 is fitted on the first gear 35 and the second gear 36, wherein the gears mesh with the first gear 35 and the second gear 36 respectively; a plurality of first arc-shaped blocks 34, which are uniformly fixedly connected to the second shaft 33; a hole frame 31, which is fixedly connected to a baffle 216, and round rods 38 are slidably connected to the inner walls of the plurality of holes of the hole frame 31; and a plurality of... A second arc-shaped block 39 is fixedly connected to a plurality of round rods 38, wherein the first arc-shaped block 34 and the second arc-shaped block 39 have the same surface size and shape; a plurality of return springs 310 are respectively sleeved on the plurality of round rods 38, wherein the two ends of the return springs 310 are fixedly connected to the second arc-shaped block 39 and the hole frame 31 respectively; a plurality of cutter holders 311 are respectively fixedly connected to the ends of the plurality of round rods 38 away from the second arc-shaped block 39, wherein the cutter holders 311 are composed of plates and a plurality of metal cutters. By setting the material crushing assembly 3, the cutter holders 311 can apply pressure to the stubborn iron nodules and crush or break them, thereby reducing the volume of the stubborn iron nodules and improving the subsequent processing efficiency. The scraper bar 214 effectively removes iron nodules, avoiding the difficulty of removal caused by the high adhesion strength of the nodules. During use, when the first shaft 213 rotates, it drives the second gear 36 to rotate. The second gear 36 drives the first gear 35 to rotate via the gear chain 37. The first gear 35 drives the second shaft 33 to rotate, causing multiple first arc-shaped blocks 34 on the second shaft 33 to rotate. During rotation, the multiple first arc-shaped blocks 34 contact multiple second arc-shaped blocks 39, using the surface curvature of both to push the second arc-shaped blocks 39 towards the hole frame 31. The multiple second arc-shaped blocks 39, through multiple round rods 38, push multiple cutter holders 311 towards the upper baffle plate 1. When the cutter holders 31... When the device moves to the position of the crushing iron lump, it uses pressure and sharp ends to cut or break the iron lump. When the first arc block 34 leaves the second arc block 39, the second arc block 39 is pulled back to its original position under the extension and retraction force of the return spring 310, and then pushed out again to achieve the reciprocating crushing treatment of the iron lump. A protective cover 211 is fixed on the bracket 210. The protective cover 211 is sleeved on the first gear 35, the second gear 36 and the tooth chain 37. By setting the protective cover 211, the first gear 35, the second gear 36 and the tooth chain 37 can be completely wrapped and blocked from the iron lump and debris scattered from the outside, so as to prevent the iron lump and debris from falling into the meshing point and affecting the normal transmission between the tooth chain 37 and the first gear 35 and the second gear 36.

[0023] Reference Figure 5 and Figure 6As shown, this embodiment discloses that the crushing assembly 3 further includes: multiple nozzles 312, which are uniformly fixed to the baffle 216; and a first pipe 313, which is fixed to the multiple nozzles 312. One end of the first pipe 313 is provided with a connecting buckle. By setting the nozzles 312 and the first pipe 313, a water pipe can be connected to the first pipe 313 to deliver external water to the multiple nozzles 312. The multiple nozzles 312 spray water onto the crushing area of ​​the cutter holder 311 to perform high-pressure washing on the crushed iron lumps and debris, reducing residue and further improving the cleaning effect on the upper baffle 1. In use, the external water pipe is first connected to the first pipe 313 through the connecting buckle, and then the delivery pump delivers water to the first pipe 313 through the water pipe. The multiple nozzles 312 spray water onto the crushing area of ​​the cutter holder 311 to wash the crushed iron lumps and debris on the upper baffle 1. The debris is subjected to high-pressure washing. A second pipe 314 is fixed to the storage frame 25, and a pump 315 is installed on the second pipe 314. One end of the second pipe 314 is connected to the first pipe 313, and the other end is connected to the inner wall of the storage frame 25. By setting the second pipe 314 and the pump 315, the water filtered in the storage frame 25 can be pumped into the first pipe 313 through the second pipe 314 by the pump 315. Then, it is sprayed out by multiple nozzles 312 for reuse, reducing water waste and improving water utilization. When in use, when the washing wastewater, iron nodules, and debris fall into the storage frame 25 together, it enters the collection box 27. After being filtered by the two filter plates 29 in the collection box 27, the water falls to the bottom of the storage frame 25. Then, the pump 315 is started to generate negative pressure inside the second pipe 314 and form suction to draw out the water and transport it to the first pipe 313 for reuse.

[0024] The implementation principle of this invention is as follows: First, the frame 21 is fixed to the upper baffle plate 1 with screws. Then, the first motor 22 is started to drive the screw 23 to rotate. The rotation of the screw 23 causes the threaded cylinder 26 to move away from the first motor 22. The threaded cylinder 26 causes the storage frame 25 to move closer to the surface of the upper baffle plate 1. The storage frame 25 moves the first shaft 213 and multiple shovel blades 214 through the bracket 210. At the same time, the second motor 212 is started to drive the first shaft 213 to rotate. When the first shaft 213 rotates, it drives the second gear 36 to rotate. The second gear 36 drives the first gear 35 to rotate through the gear chain 37. The first gear 35 drives the second shaft 33 to rotate. Multiple first arc blocks 34 rotate, and during the rotation, multiple first arc blocks 34 come into contact with multiple second arc blocks 39. The surface curvature of the two blocks pushes the second arc blocks 39 toward the hole frame 31. Multiple second arc blocks 39 push multiple cutter holders 311 toward the upper baffle plate 1 through multiple round rods 38. When the cutter holders 311 move to the position of squeezing the iron lump, the pressure and sharp ends are used to cut or break the iron lump. When the first arc blocks 34 leave the second arc blocks 39, the second arc blocks 39 are pulled back to their original position by the extension and retraction force of the return spring 310, and then pushed out again to achieve the reciprocating crushing treatment of the iron lump. At the same time, the external water pipe is connected to the first pipe fitting 313 through the connecting buckle. Then, the external delivery pump drives the water flow through the water pipe to the first pipe fitting 313. Multiple nozzles 312 spray water onto the crushing area of ​​the cutter holder 311 to perform high-pressure washing of the crushed iron lumps and debris on the upper baffle plate 1. As the first shaft 213 rotates, it drives multiple shovels 214 and multiple first rubber plates 215 to rotate. During the rotation, the shovels 214 adhere to the surface of the upper baffle 1 and remove the stubborn iron lumps. The multiple first rubber plates 215 adhere to the surface of the upper baffle 1 and rotate to scrape off the remaining iron filings and debris. The iron lumps, iron filings, debris and water that have been crushed, high-pressure washed, shoveled and softly scraped fall into the collection box 27 of the storage frame 25 for storage. The iron lumps and iron filings are filtered in two layers by two filter plates 29 to separate large iron lumps and iron filings. At the same time, the water flows through the two filter plates 29 and into the bottom layer of the storage frame 25. Then the pump 315 is started to generate negative pressure inside the second pipe 314 and form suction to draw out the water and transport it to the first pipe 313 for secondary use, thereby achieving multiple cleaning of the upper baffle 1. Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for reducing the intrusion of foreign objects into hot-rolled coils, characterized in that: include: Hot rolling mill; Upper baffle plate (1), which is fixedly installed on the hot rolling mill by screws; The scraping assembly (2) is set on the upper baffle plate (1). It can adhere to the surface of the upper baffle plate (1) and peel off large-volume stubborn iron nodules and residual iron filings and residues from the plate surface by rotating and scraping. The scraped iron nodules and iron filings are collected and processed. The crushing component (3) is disposed on the scraping component (2) and is capable of assisting in the crushing and high-pressure washing of large-volume stubborn iron nodules.

2. The device for reducing foreign object indentation in hot-rolled coils according to claim 1, characterized in that: The scraper assembly (2) includes: The frame (21) is detachably mounted on the upper baffle (1) by screws; The first motor (22) is fixedly connected to the frame (21), and the output end of the first motor (22) is fixedly connected to the screw (23) through the coupling. Storage frame (25), the storage frame (25) is slidably mounted on frame (21), and a threaded cylinder (26) is fixedly connected to the storage frame (25), wherein the threaded cylinder (26) is sleeved on screw (23), and the surface of screw (23) is threadedly connected to the inner wall of threaded cylinder (26); A bracket (210) is fixedly connected to a storage frame (25); The second motor (212) is fixedly connected to the bracket (210). The output end of the second motor (212) is fixedly connected to the first shaft (213) through a coupling. The surface of the first shaft (213) is rotatably connected to the inner wall of the bracket (210). Multiple shovels (214) are fixed to the first shaft (213) by straight rods. The multiple shovels (214) are arranged in a circle and the surface of the shovels (214) is in contact with the surface of the upper baffle (1).

3. The device for reducing foreign object indentation in hot-rolled coils according to claim 2, characterized in that: Multiple first rubber plates (215) are fixedly connected to the first shaft (213). The multiple first rubber plates (215) are arranged in a circle, and the surface of the first rubber plate (215) is in contact with the surface of the upper baffle plate (1).

4. The device for reducing foreign object indentation in hot-rolled coils according to claim 2, characterized in that: The storage frame (25) has a through hole, and a perforated plate (2802) is fixedly connected to the storage frame (25). The scraping assembly (2) further includes: Collection box (27), the collection box (27) is slidably connected to the inner wall of the through hole of the storage frame (25), and a screw hole plate (2801) is fixed on the collection box (27), wherein the bottom of the collection box (27) is a detachable double-layer filter plate (29). Bolt (28) is threaded to the inner wall of the bolt hole plate (2801), wherein the surface size and shape of the bolt (28) are adapted to the size and shape of the inner wall of the hole plate (2802).

5. The device for reducing foreign object indentation in hot-rolled coils according to claim 2, characterized in that: A baffle (216) is fixedly connected to the side of the storage frame (25) away from the shovel bar (214). A circular hole plate (217) is fixedly connected to the baffle (216). A spring rod (218) is slidably connected to the inner wall of the circular hole plate (217). A second rubber plate (219) is fixedly connected to the spring rod (218). The baffle (216) is fixed obliquely in the opposite direction away from the shovel bar (214). The spring rod (218) is composed of a rod and a spring. The two ends of the spring in the spring rod (218) are fixedly connected to the rod and the circular hole plate (217) respectively.

6. The device for reducing foreign object indentation in hot-rolled coils according to claim 2, characterized in that: A rubber column (24) is fixed to the frame (21), wherein the rubber column (24) corresponds to the position of the storage frame (25).

7. The device for reducing foreign object indentation in hot-rolled coils according to claim 5, characterized in that: The fragmentation assembly (3) includes: Sleeve (32), which is fixedly connected to storage frame (25), and a second shaft (33) is rotatably connected to the inner wall of sleeve (32) through bearing. The first gear (35) is fixedly connected to the second shaft (33); The second gear (36) is fixedly connected to the first shaft (213). The first gear (35) and the second gear (36) are fitted with a toothed chain (37), wherein the gears mesh with the first gear (35) and the second gear (36) respectively. Multiple first arc-shaped blocks (34) are uniformly fixed to the second shaft (33); Hole frame (31), the hole frame (31) is fixedly connected to the baffle (216), and the inner walls of the multiple holes of the hole frame (31) are slidably connected with round rods (38). Multiple second arc blocks (39) are fixedly connected to multiple round rods (38), wherein the first arc block (34) and the second arc block (39) have the same surface size and shape; Multiple return springs (310) are respectively sleeved on multiple round rods (38), wherein the two ends of the return springs (310) are respectively fixed to the second arc block (39) and the hole frame (31); Multiple tool holders (311) are fixedly connected to one end of multiple round rods (38) away from the second arc block (39), wherein the tool holders (311) are composed of plates and multiple metal cutting blades.

8. The device for reducing foreign object indentation in hot-rolled coils according to claim 6, characterized in that: A protective cover (211) is fixedly connected to the bracket (210), and the protective cover (211) is sleeved on the first gear (35), the second gear (36) and the gear chain (37).

9. The device for reducing foreign object indentation in hot-rolled coils according to claim 5, characterized in that: The crushing assembly (3) also includes: Multiple nozzles (312) are uniformly fixed to the baffle (216); The first fitting (313) is fixedly connected to a plurality of nozzles (312), wherein one end of the first fitting (313) is provided with a connecting buckle.

10. The device for reducing foreign object indentation in hot-rolled coils according to claim 9, characterized in that: A second pipe (314) is fixedly connected to the storage frame (25), and a pump (315) is provided on the second pipe (314). One end of the second pipe (314) is connected to the first pipe (313), and the other end is connected to the inner wall of the storage frame (25).

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