A tension roll doctor device for a cold reduction annealing line

Abstract

The application discloses a cold-rolled annealing unit tension roller scraper device and relates to the technical field of cold-rolled strip steel production equipment. The device comprises two symmetrically arranged support plates fixedly installed on the front and rear sidewalls of a rack, one side of each support plate is fixedly connected with a vertically arranged guide rod, the sidewall of the guide rod is sequentially sleeved with a bottom washer, a compression spring, a top washer and an adjusting nut from bottom to top, the other side of the two support plates is rotationally connected with a mounting rod, the side of the mounting rod away from the guide rod is detachably fixedly installed with a scraper plate, the two ends of the mounting rod are fixedly connected with a poking rod after penetrating through the sidewall of the support plate, a long slot is vertically formed in one end of the poking rod, the guide rod is inserted into the long slot, and the bottom washer abuts against the upper surface of the poking rod. The application can adjust the adhesion pressure, replace the scraper plate conveniently, scrape completely, run stably, improve the strip steel quality and production efficiency, and is suitable for cold-rolled annealing units.

Description

Technical Field

[0001] This application relates to the technical field of cold-rolled strip steel production equipment, and in particular to a tension roller scraper device for a cold-rolled annealing unit. Background Technology

[0002] In the production process of cold-rolled strip steel, the cold rolling annealing unit is the key equipment for softening the strip steel and eliminating internal stress. As the core component in the unit that controls the tension of the strip steel and ensures the continuity of production, the surface cleanliness of the tension roller directly affects the quality of the strip steel products and the stability of production. In actual production conditions, cold-rolled strip steel often has impurities such as rolling oil, iron powder, and oxide scale adhering to its surface. These impurities are easily transferred to the surface of the tension roll during the contact process between the strip steel and the tension roll and gradually accumulate. If not removed in time, on the one hand, the accumulated impurities will cause irregular protrusions on the surface of the tension roll, resulting in defects such as indentations and scratches on the strip steel surface, which seriously affects the appearance and mechanical properties of the product; on the other hand, the accumulation of impurities will change the friction coefficient between the tension roll and the strip steel, leading to a decrease in the strip steel tension control accuracy, and even causing production accidents such as strip steel deviation and breakage, increasing downtime maintenance time and production costs. In existing technologies, fixed scraper devices are often used to remove impurities from the surface of tension rollers. These devices have the following technical drawbacks: First, the contact pressure between the scraper and the tension roller surface cannot be adjusted. When the tension roller surface is worn or the thickness of the impurity accumulation changes, the contact may be too loose, resulting in incomplete scraping, or too tight, causing excessive wear on the tension roller and the scraper, thus shortening the service life of the equipment. Second, the scrapers are mostly installed by welding or integral bolt fixing. When the scraper wears out, the entire device needs to be disassembled for replacement, which is cumbersome, time-consuming, and affects production efficiency. Utility Model Content

[0003] This utility model addresses the aforementioned problems in the existing technology by providing a tension roller scraper device for a cold rolling annealing unit.

[0004] The objective of this utility model is mainly achieved through the following solution: A tension roller scraper device for a cold rolling annealing unit is disclosed. The tension roller is rotatably connected to the frame of the cold rolling annealing unit at both ends. The scraper device includes two symmetrically arranged support plates, which are fixedly installed on the front and rear side walls of the frame. A vertically arranged guide rod is fixedly connected to one side of each support plate. The side wall of the guide rod is fitted with a bottom washer, a compression spring, a top washer, and an adjusting nut from bottom to top. An installation rod is rotatably connected between the other sides of the two support plates. A scraper plate is detachably and fixedly installed on the side of the installation rod away from the guide rod. A toggle rod is fixedly connected to both ends of the installation rod after passing through the side wall of the support plate. An elongated hole is opened vertically at one end of the toggle rod. The guide rod is inserted into the elongated hole, and the bottom washer abuts against the upper surface of the toggle rod.

[0005] Preferably, the side wall of the mounting rod is provided with a mounting block in the longitudinal direction, the scraper plate is provided with a T-shaped groove in the longitudinal direction on the side facing the mounting block, a T-shaped protrusion is inserted in the T-shaped groove in the longitudinal direction, and a mounting groove is opened on the side of the T-shaped protrusion facing the mounting block, so that the mounting block can be inserted into the mounting groove. The side walls of the scraper plate, the T-shaped protrusion and the mounting block are all provided with multiple fixing holes in the upper and lower directions, and the fixed connection between the scraper plate, the T-shaped protrusion and the mounting block is achieved by locking bolts passing through the fixing holes and locking nuts threaded to the locking bolts.

[0006] Preferably, the upper and lower surfaces of the scraper are provided with pads, and the pads are tightly attached to the upper and lower surfaces of the scraper by locking bolts and locking nuts.

[0007] Preferably, the scraper blade has an arc-shaped scraping section on the side away from the mounting block, and one side of the scraping section is in contact with the side wall of the tension roller.

[0008] Preferably, the side wall of the mounting rod is provided with two clamping blocks at the position where it contacts the mounting block, and the clamping blocks abut against the side wall of the scraper plate.

[0009] In summary, compared with the prior art, the present invention has the following beneficial technical effects: (1) This utility model uses a guide rod, a clamping spring and an adjusting nut to adjust the pressure of the clamping spring on the lever by rotating the adjusting nut, thereby driving the mounting rod and the scraper to rotate around the support plate, thereby adjusting the contact pressure between the scraping part of the scraper and the surface of the tension roller. When the surface of the tension roller is worn or the thickness of the impurity accumulation changes, the pressure can be quickly adjusted, which avoids incomplete scraping caused by loose contact and prevents excessive wear of the equipment caused by tight contact, thus ensuring a long-term stable scraping effect. (2) This utility model adopts a combination connection structure of T-shaped protrusion, mounting block and locking bolt and locking nut to realize the detachable and fixed installation of scraper plate and mounting rod. When the scraper plate is worn, only the locking nut and locking bolt need to be removed to quickly take out the T-shaped protrusion and scraper plate. No overall disassembly device is required, which greatly shortens the maintenance time and improves production efficiency. (3) This utility model enhances the tightness of the connection between the scraper plate and the mounting block by using a pad plate, restricts the displacement of the scraper plate by using a clamping block, and ensures the stability of the movement trajectory of the actuating rod by the matching structure of the guide rod and the elongated hole. This effectively avoids the loosening and displacement of the device under long-term vibration conditions, ensures the long-term reliable operation of the equipment, and reduces the incidence of production accidents. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is the front view of this utility model; Figure 3 This is an exploded view of the present invention; Figure 4 This is a schematic diagram of the installation of the scraper blade and the mounting rod in this utility model; Figure 5 yes Figure 3 Enlarged view of point A in the middle.

[0011] Reference numerals: 1-Support plate, 2-Guide rod, 3-Bottom washer, 4-Compression spring, 5-Top washer, 6-Adjusting nut, 7-Mounting rod, 8-Scraper plate, 9-Actuating rod, 10-Elongated hole, 11-Mounting block, 12-T-groove, 13-T-protrusion, 14-Mounting groove, 15-Fixing hole, 16-Locking bolt, 17-Locking nut, 18-Plate, 19-Scraper plate, 20-Compression block. Detailed Implementation

[0012] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.

[0013] like Figure 1-5As shown, this utility model discloses a technical solution: a tension roller scraper device for a cold rolling annealing unit. The two ends of the tension roller are rotatably connected to the frame of the cold rolling annealing unit. The scraper device includes two symmetrically arranged support plates 1, which are bolted to the front and rear side walls of the frame. Each support plate 1 has a vertically arranged guide rod 2 welded, threaded, or bolted to its left side via a fixing post. From bottom to top, the side wall of the guide rod 2 is fitted with a bottom washer 3, a compression spring 4, a top washer 5, and an adjusting nut 6. The adjusting nut 6 is positioned between the top of the guide rod 2 and the bottom of the guide rod 2. Threaded connection; a mounting rod 7 is rotatably connected between the right sides of the two support plates 1 via a bearing. A scraper plate 8 is detachably and fixedly installed on the middle of the side of the mounting rod 7 away from the guide rod 2. The scraper plate 8 corresponds to the position of the tension roller, and the length of the scraper plate 8 is not less than the length of the tension roller. The two ends of the mounting rod 7 pass through the side wall of the support plate 1 and are fixedly connected to a lever 9 by bolts. The lever 9 can rotate around the mounting rod 7. The free end of the lever 9 has an elongated hole 10 that runs through it from top to bottom. The guide rod 2 is inserted into the elongated hole 10, and the bottom washer 3 abuts against the upper surface of the lever 9.

[0014] Furthermore, to achieve detachable and fixed installation of the scraper plate 8 for easy replacement and maintenance, a mounting block 11 is longitudinally installed on the side wall of the mounting rod 7. The mounting block 11 is welded or bolted to the side wall of the mounting rod 7. A T-shaped groove 12 is longitudinally opened on the side of the scraper plate 8 facing the mounting block 11. A longitudinally arranged T-shaped protrusion 13 is inserted into the T-shaped groove 12. A mounting groove 14 is opened on the side of the T-shaped protrusion 13 facing the mounting block 11. The mounting block 11 can be inserted into the mounting groove 14. Multiple fixing holes 15 are provided vertically through the side walls of the scraper plate 8, the T-shaped protrusion 13 and the mounting block 11. The fixing holes 15 are evenly arranged longitudinally. The fixed connection between the scraper plate 8, the T-shaped protrusion 13 and the mounting block 11 is achieved by locking bolts 16 passing through the fixing holes 15 and locking nuts 17 threadedly connected to the locking bolts 16.

[0015] Furthermore, to enhance the tightness of the connection between the scraper plate 8 and the mounting block 11 and to prevent loosening caused by long-term vibration, pads 18 are provided on both the upper and lower surfaces of the scraper plate 8. The pads 18 are tightly attached to the upper and lower surfaces of the scraper plate 8 by locking bolts 16 and locking nuts 17. The pads 18 are made of elastic wear-resistant material, which can improve the connection stability through pre-tightening force and buffer the vibration and impact of the scraper plate 8 during operation.

[0016] Furthermore, in order to improve the adhesion between the scraper plate 8 and the surface of the tension roller and achieve the removal of impurities in the entire circumference without dead angles, an arc-shaped scraping part 19 is integrally provided on the side of the scraper plate 8 away from the mounting block 11. One side of the scraping part 19 is in contact with the side wall of the tension roller, effectively avoiding local missed scraping.

[0017] Furthermore, to further improve the installation stability of the scraper blade 8 and prevent it from shifting laterally during the scraping of impurities, two clamping blocks 20 are welded or bonded to the side wall of the mounting rod 7 where they contact the mounting block 11. The clamping blocks 20 abut against the side wall of the scraper blade 8. The clamping blocks 20 are made of rigid material. By tightly abutting against the side wall of the scraper blade 8, the lateral displacement of the scraper blade 8 is restricted, ensuring the accuracy of the scraping position.

[0018] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tension roller scraper device for a cold rolling annealing unit, wherein the two ends of the tension roller are rotatably connected to the frame of the cold rolling annealing unit, characterized in that: The scraper device includes two symmetrically arranged support plates (1) at the front and rear. The support plates (1) are fixedly installed on the front and rear side walls of the frame. Each support plate (1) is fixedly connected to a vertically arranged guide rod (2) on one side. The side wall of the guide rod (2) is fitted with a bottom washer (3), a compression spring (4), a top washer (5), and an adjusting nut (6) from bottom to top. An installation rod (7) is rotatably connected between the other sides of the two support plates (1). A scraper plate (8) is detachably fixedly installed on the side of the installation rod (7) away from the guide rod (2). The two ends of the installation rod (7) pass through the side wall of the support plate (1) and are fixedly connected to a lever (9). One end of the lever (9) is provided with an elongated hole (10) that runs through it vertically. The guide rod (2) is inserted into the elongated hole (10), and the bottom washer (3) abuts against the upper surface of the lever (9).

2. The tension roll scraper device for a cold rolling annealing unit according to claim 1, characterized in that: The mounting rod (7) has a mounting block (11) longitudinally arranged on its side wall. The scraper plate (8) has a T-shaped groove (12) longitudinally arranged on the side facing the mounting block (11). A T-shaped protrusion (13) is inserted into the T-shaped groove (12) longitudinally arranged. The T-shaped protrusion (13) has a mounting groove (14) on the side facing the mounting block (11). The mounting block (11) can be inserted into the mounting groove (14). The scraper plate (8), the T-shaped protrusion (13) and the mounting block (11) all have multiple fixing holes (15) running vertically through their side walls. The scraper plate (8), the T-shaped protrusion (13) and the mounting block (11) are fixedly connected by a locking bolt (16) passing through the fixing hole (15) and a locking nut (17) threadedly connected to the locking bolt (16).

3. The tension roll scraper device for a cold rolling annealing unit according to claim 2, characterized in that: The upper and lower surfaces of the scraper plate (8) are provided with pads (18), and the pads (18) are tightly attached to the upper and lower surfaces of the scraper plate (8) by locking bolts (16) and locking nuts (17).

4. The tension roll scraper device for a cold rolling annealing unit according to claim 3, characterized in that: The scraper blade (8) has an arc-shaped scraping part (19) on the side away from the mounting block (11), and one side of the scraping part (19) is in contact with the side wall of the tension roller.

5. The tension roll scraper device for a cold rolling annealing unit according to claim 4, characterized in that: The mounting rod (7) has two pressing blocks (20) at the position where it contacts the mounting block (11), and the pressing blocks (20) abut against the side wall of the scraper plate (8).

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