Mechanical breaking scale removal device for hot-rolled billets

Abstract

The utility model discloses a hot-rolled steel billet mechanical crushing descaling device relates to hot-rolled production line technical field, including the chassis, the inside of chassis is installed with the conveying roller through the equal distance rotation of bearing, the same number of first servo motor of conveying roller is installed to the equal distance of one side of chassis, and the output of each first servo motor is connected with one end of a conveying roller respectively, and the inner wall of the front end of chassis is rotatably installed with first descaling roller through bearing, and the one side of chassis is installed with second servo motor, and the output of second servo motor is connected with one end of first descaling roller, and first descaling roller is higher than conveying roller. In the utility model, the compact oxide layer of the surface of the blank can be scraped through the rotation of first descaling roller, second descaling roller and second descaling roller, and high pressure water descaling can be efficiently utilized, and the descaling effect is improved, and when not using high pressure water descaling, a part of steel billet surface scale can also be independently handled.

Description

Technical Field

[0001] This utility model relates to the field of hot rolling production line technology, and in particular to a mechanical crushing and descaling device for hot-rolled steel billets. Background Technology

[0002] Square steel billets, as a commonly used hot-rolled steel billet, are mainly used as raw materials for profile rolling. During the production process, square steel billets are heated in a heating furnace to reach the hot rolling temperature and then transported to the rolling mill for rolling. During the heating process, an oxide layer is formed on the surface of the steel billet, which has a serious impact on the surface quality of the rolled products.

[0003] Existing descaling methods include high-pressure water descaling, but due to process and material issues, a dense iron oxide layer forms on the surface of the billet, preventing high-pressure water from penetrating between the oxide layer and the raw material layer, thus greatly reducing the descaling effect. Therefore, a mechanical crushing and descaling device for hot-rolled billets is provided. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a mechanical crushing and descaling device for hot-rolled steel billets. By rotating the first descaling roller, the second descaling roller, and the third descaling roller, the dense oxide layer on the surface of the billet can be scraped off. This facilitates the efficient use of high-pressure water descaling, improves the descaling effect, and can also independently treat a portion of the iron oxide scale on the surface of the steel billet when high-pressure water descaling is not used, thus overcoming the shortcomings of existing technologies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A mechanical crushing and descaling device for hot-rolled steel billets includes a base frame. Conveying rollers are rotatably mounted on the inner side of the base frame via bearings at equal intervals. The same number of first servo motors as the conveying rollers are rotatably mounted on one side of the base frame. The output end of each first servo motor is connected to one end of a conveying roller. A first descaling roller is rotatably mounted on the inner front wall of the base frame via bearings. A second servo motor is mounted on one side of the base frame, with its output end connected to one end of the first descaling roller. The first descaling roller is higher than the conveying rollers. A lifting frame is mounted on the base frame and behind the first descaling roller. An elastic component is mounted on the lifting frame, and a top descaling mechanism is mounted on the elastic component. Side supports are mounted on both sides of the base frame behind the top descaling mechanism, and side descaling mechanisms are mounted on both side supports. A PLC controller is mounted on the base frame. Both the first and second servo motors are electrically connected to the PLC controller. Crushing teeth are provided on the surface of the first descaling roller.

[0007] As a further embodiment of this utility model: the lifting frame includes uprights symmetrically fixed on both sides of the base frame, the upper ends of the two uprights are connected to a top rod, a lifting plate is slidably sleeved on the two uprights, and a hydraulic telescopic rod is installed between the lifting plate and the top rod.

[0008] As a further embodiment of this utility model: the elastic component includes a seat plate, with end plates fixed on both sides of the lower end face of the seat plate, and screws fixed at the four corners of the upper end face of the seat plate. The four screws are respectively inserted into the four corners of the lifting plate, and nuts are screwed to the top of the four screws. A first spring is sleeved on the four screws at the part located between the lifting plate and the seat plate.

[0009] As a further embodiment of this utility model: the top descaling mechanism includes a second descaling roller rotatably mounted between two end plates via a bearing, a third servo motor is mounted on one side of one of the end plates, the output end of the third servo motor is connected to one end of the second descaling roller, and the surface of the second descaling roller is provided with crushing teeth.

[0010] As a further embodiment of this utility model: a first proximity sensor and a second proximity sensor are respectively installed at the front and rear ends of the lifting plate, and the hydraulic telescopic rod, the second proximity sensor and the third servo motor are all electrically connected to the PLC controller.

[0011] As a further embodiment of this utility model: the side support includes a vertical plate fixed to the side of the base frame, a connecting block fixed to the side of the vertical plate facing the conveyor roller, an mounting plate rotatably mounted on the connecting block, the mounting plate and the vertical plate having an angle, a T-pin provided on the side of the mounting plate facing the vertical plate, a support block fixed to the side of the vertical plate facing the mounting plate, an extension plate provided on the support block, a slotted opening provided on the extension plate, the T-pin being movably inserted into the slotted opening, and a second spring sleeved on the part of the T-pin located between the extension plate and the mounting plate.

[0012] As a further embodiment of this utility model: the side descaling mechanism includes a mounting groove opened at the end of the mounting plate away from the connecting block, a third descaling roller is rotatably mounted at the mounting groove via a bearing, a fourth servo motor is mounted at the top of the mounting plate, the output end of the fourth servo motor is connected to the upper end of the third descaling roller, and the surface of the third descaling roller is provided with crushing teeth.

[0013] The beneficial effects of this utility model are as follows:

[0014] The rotation of the first descaling roller, the second descaling roller, and the third descaling roller can scrape off the dense oxide layer on the surface of the billet, making it easier to use high-pressure water descaling efficiently, improving the descaling effect, and also independently treating a portion of the iron oxide scale on the surface of the billet when high-pressure water descaling is not used. Attached Figure Description

[0015] Figure 1 This is a first-view three-dimensional structural diagram of a mechanical crushing and descaling device for hot-rolled steel billets proposed in this utility model.

[0016] Figure 2 This is a second-view three-dimensional structural diagram of a mechanical crushing and descaling device for hot-rolled steel billets proposed in this utility model.

[0017] Figure 3 This is a third-view three-dimensional structural diagram of a mechanical crushing and descaling device for hot-rolled steel billets proposed in this utility model.

[0018] Figure 4 This utility model proposes a mechanical crushing and descaling device for hot-rolled steel billets. Figure 1 Enlarged structural diagram at point A in the middle.

[0019] Figure 5 This utility model proposes a mechanical crushing and descaling device for hot-rolled steel billets. Figure 3 Enlarged structural diagram at point B.

[0020] In the diagram: 1. Base frame; 2. Conveyor roller; 3. Vertical plate; 4. Connecting block; 5. Vertical pole; 6. Seat plate; 7. Second proximity sensor; 8. Top rod; 9. Hydraulic telescopic rod; 10. Lifting plate; 11. First descaling roller; 12. Second servo motor; 13. PLC controller; 14. First servo motor; 15. First proximity sensor; 16. Second descaling roller; 17. End plate; 18. Third servo motor; 19. First spring; 20. Screw; 21. Support block; 22. T-pin; 23. Strip opening; 24. Second spring; 25. Third descaling roller; 26. Fourth servo motor; 27. Mounting plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1, referring to Figure 1-5A mechanical crushing and descaling device for hot-rolled steel billets includes a base frame 1. Conveying rollers 2 are rotatably mounted at equal intervals on the inner side of the base frame 1 via bearings. First servo motors 14, the same number as the conveying rollers 2, are rotatably mounted at equal intervals on one side of the base frame 1. The output end of each first servo motor 14 is connected to one end of a conveying roller 2. First descaling rollers 11 are rotatably mounted on the inner front wall of the base frame 1 via bearings. Second servo motors 12 are mounted on one side of the base frame 1, and the output end of the second servo motors 12 is connected to one end of the first descaling rollers 11. The first descaling roller 11 is higher than the conveying roller 2. A lifting frame is installed on the base frame 1 and behind the first descaling roller 11. An elastic component is installed on the lifting frame, and a top descaling mechanism is installed on the elastic component. Side brackets are installed on both sides of the base frame 1 behind the top descaling mechanism. Side descaling mechanisms are installed on both side brackets. A PLC controller 13 is installed on the base frame 1. The first servo motor 14 and the second servo motor 12 are electrically connected to the PLC controller 13. The surface of the first descaling roller 11 is provided with crushing teeth.

[0023] The lifting frame includes uprights 5 symmetrically fixed on both sides of the base frame 1. The upper ends of the two uprights 5 are connected to top rods 8. Lifting plates 10 are slidably sleeved on the two uprights 5. A hydraulic telescopic rod 9 is installed between the lifting plates 10 and the top rods 8.

[0024] The elastic component includes a seat plate 6, with end plates 17 fixed on both sides of the lower end face of the seat plate 6. Screws 20 are fixed at the four corners of the upper end face of the seat plate 6. The four screws 20 are respectively inserted into the four corners of the lifting plate 10. Nuts are screwed to the top of the four screws 20. A first spring 19 is sleeved on the four screws 20 at the part located between the lifting plate 10 and the seat plate 6.

[0025] The top descaling mechanism includes a second descaling roller 16 rotatably mounted between two end plates 17 via bearings. A third servo motor 18 is mounted on one side of one of the end plates 17. The output end of the third servo motor 18 is connected to one end of the second descaling roller 16. The surface of the second descaling roller 16 is provided with crushing teeth.

[0026] The first proximity sensor 15 and the second proximity sensor 7 are respectively installed at the front and rear ends of the lifting plate 10. The hydraulic telescopic rod 9, the second proximity sensor 7 and the third servo motor 18 are all electrically connected to the PLC controller 13.

[0027] The side support includes a vertical plate 3 fixed to the side of the base frame 1. A connecting block 4 is fixed to the side of the vertical plate 3 facing the conveyor roller 2. An mounting plate 27 is rotatably mounted on the connecting block 4. The mounting plate 27 and the vertical plate 3 are at an angle. A T-pin 22 is provided on the side of the mounting plate 27 facing the vertical plate 3. A support block 21 is fixed to the side of the vertical plate 3 facing the mounting plate 27. An extension plate is provided on the support block 21. A slot 23 is provided on the extension plate. The T-pin 22 is movably inserted into the slot 23. A second spring 24 is sleeved on the part of the T-pin 22 located between the extension plate and the mounting plate 27.

[0028] The side descaling mechanism includes a mounting groove on the mounting plate 27 away from the connecting block 4. A third descaling roller 25 is rotatably mounted in the mounting groove via a bearing. A fourth servo motor 26 is mounted on the top of the mounting plate 27. The output end of the fourth servo motor 26 is connected to the upper end of the third descaling roller 25. The surface of the third descaling roller 25 is provided with crushing teeth.

[0029] Working principle: The base frame 1 is installed on one side of the heating furnace outlet roller conveyor, with the first descaling roller 11 close to the heating furnace outlet. The first servo motor 14 drives the conveyor roller 2 to rotate. When the billet is conveyed out of the heating furnace outlet, the second servo motor 12 drives the first descaling roller 11 to rotate, causing the first descaling roller 11 to scrape off the dense oxide layer on the bottom of the billet. When the front end of the billet moves below the second descaling roller 16, the first proximity sensor 15 detects the billet and transmits the detection signal to the PLC controller 13. The PLC controller 13 then controls the first servo motor 14 to pause, and the PLC... The controller 13 controls the hydraulic telescopic rod 9 to push the second descaling roller 16 downward. Simultaneously, the PLC controller 13 controls the third servo motor 18 to start, driving the second descaling roller 16 to rotate and scrape away the dense oxide layer on the front end of the billet. After the second descaling roller 16 moves up and down once and then resets, the first servo motor 14 starts, and the conveyor roller 2 continues to convey the billet. The top of the billet contacts the second descaling roller 16, compressing the first spring 19. The rebound force provided by the first spring 19 ensures effective contact between the second descaling roller 16 and the billet. As the billet moves and the second descaling roller 16 rotates... The dense oxide layer on the top of the billet can be scraped off. When the rear end of the billet moves below the second descaling roller 16, the second proximity sensor 7 increases the detected distance signal and transmits the signal to the PLC controller 13. The PLC controller 13 then controls the first servo motor 14 to pause again. The PLC controller 13 then controls the hydraulic telescopic rod 9 to push the second descaling roller 16 downward to scrape off the dense oxide layer on the rear end of the billet. After the second descaling roller 16 moves up and down once, it resets. The first servo motor 14 starts again and continues to transport the billet using the conveyor roller 2. The PLC controller 13 controls the two fourth servo motors 26. The start-up mechanism causes the two third descaling rollers 25 to rotate. When the two sides of the billet come into contact with the two third descaling rollers 25, the two mounting plates 27 are pushed and swing, which compresses the two second springs 24. The rebound force provided by the two second springs 24 to the two mounting plates 27 makes the two third descaling rollers 25 effectively contact the two sides of the billet. As the billet moves and the two third descaling rollers 25 rotate, the dense oxide layer on the two sides of the billet is scraped off. The above process facilitates the efficient use of high-pressure water descaling, improves the descaling effect, and can also independently treat a portion of the iron oxide scale on the surface of the billet when high-pressure water descaling is not used.

[0030] Example 2 is an optimization based on Example 1, specifically:

[0031] To extend the service life of the first servo motor 14, the second servo motor 12, the third servo motor 18, and the fourth servo motor 26, protective shells can be installed on the outside of the first servo motor 14, the second servo motor 12, the third servo motor 18, and the fourth servo motor 26 to improve waterproofing.

[0032] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A mechanical crushing and descaling device for hot-rolled steel billets, comprising a base frame (1), characterized in that, The inner side of the base frame (1) is equipped with conveyor rollers (2) that are rotatably mounted at equal intervals via bearings. The same number of first servo motors (14) as the conveyor rollers (2) are rotatably mounted at equal intervals on one side of the base frame (1). The output end of each first servo motor (14) is connected to one end of a conveyor roller (2). The inner front wall of the base frame (1) is equipped with a first descaling roller (11) that is rotatably mounted via bearings. A second servo motor (12) is mounted on one side of the base frame (1), and the output end of the second servo motor (12) is connected to one end of the first descaling roller (11). Above the conveyor roller (2), a lifting frame is installed on the base frame (1) and behind the first descaling roller (11). An elastic component is installed on the lifting frame, and a top descaling mechanism is installed on the elastic component. Side brackets are installed on both sides of the base frame (1) behind the top descaling mechanism, and side descaling mechanisms are installed on both side brackets. A PLC controller (13) is installed on the base frame (1). The first servo motor (14) and the second servo motor (12) are electrically connected to the PLC controller (13). The surface of the first descaling roller (11) is provided with crushing teeth.

2. The mechanical crushing and descaling device for hot-rolled steel billets according to claim 1, characterized in that, The lifting frame includes uprights (5) symmetrically fixed on both sides of the base frame (1), with a top rod (8) connected to the upper end of the two uprights (5), and a lifting plate (10) slidably sleeved on the two uprights (5). A hydraulic telescopic rod (9) is installed between the lifting plate (10) and the top rod (8).

3. The mechanical crushing and descaling device for hot-rolled steel billets according to claim 2, characterized in that, The elastic component includes a seat plate (6), with end plates (17) fixed on both sides of the lower end face of the seat plate (6), and screws (20) fixed at the four corners of the upper end face of the seat plate (6). The four screws (20) are respectively inserted into the four corners of the lifting plate (10), and nuts are screwed to the top of the four screws (20). A first spring (19) is sleeved on the four screws (20) and at the part between the lifting plate (10) and the seat plate (6).

4. The mechanical crushing and descaling device for hot-rolled steel billets according to claim 3, characterized in that, The top descaling mechanism includes a second descaling roller (16) rotatably mounted between two end plates (17) via bearings. A third servo motor (18) is mounted on one side of one of the end plates (17). The output end of the third servo motor (18) is connected to one end of the second descaling roller (16). The surface of the second descaling roller (16) is provided with crushing teeth.

5. The mechanical crushing and descaling device for hot-rolled steel billets according to claim 4, characterized in that, The lifting plate (10) is equipped with a first proximity sensor (15) and a second proximity sensor (7) at its front and rear ends respectively. The hydraulic telescopic rod (9), the second proximity sensor (7) and the third servo motor (18) are all electrically connected to the PLC controller (13).

6. The mechanical crushing and descaling device for hot-rolled steel billets according to claim 1, characterized in that, The side support includes a vertical plate (3) fixed to the side of the base frame (1). A connecting block (4) is fixed to the side of the vertical plate (3) facing the conveyor roller (2). An mounting plate (27) is rotatably mounted on the connecting block (4). The mounting plate (27) and the vertical plate (3) are at an angle. A T-pin (22) is provided on the side of the mounting plate (27) facing the vertical plate (3). A support block (21) is fixed to the side of the vertical plate (3) facing the mounting plate (27). An extension plate is provided on the support block (21). A slot (23) is provided on the extension plate. The T-pin (22) is movably inserted into the slot (23). A second spring (24) is sleeved on the part of the T-pin (22) located between the extension plate and the mounting plate (27).

7. The mechanical crushing and descaling device for hot-rolled steel billets according to claim 1, characterized in that, The side descaling mechanism includes a mounting groove on the mounting plate (27) away from the connecting block (4). A third descaling roller (25) is rotatably mounted in the mounting groove via a bearing. A fourth servo motor (26) is mounted on the top of the mounting plate (27). The output end of the fourth servo motor (26) is connected to the upper end of the third descaling roller (25). The surface of the third descaling roller (25) is provided with crushing teeth.

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