A stepping beam detection device for a back-end process based on a stepping heating furnace

Abstract

The utility model discloses a kind of back blank using step beam detection devices based on step-by-step heating furnace, it is related to heating furnace technical field.The utility model includes step beam body, extension plate and detection device ontology, extension plate is fixed in step beam body front end end, detection device ontology includes probe rod, furnace wall water cooling jacket, roller way side support and proximity sensor, probe rod includes inner tube and outer tube, and water cooling cavity is formed between inner tube and outer tube.The utility model is through the detection of the design novel probe rod type detection device, through extension plate, the detection area of step beam body end is amplified, simultaneously through the probe rod of elastic function with telescopic and mechanical contact to extension plate, the position of step beam is detected by proximity sensor detection probe rod, accurate detection can be realized, guarantee the stability and positional accuracy of subsequent steel billet back furnace, avoid appearing drop furnace problem, improve work efficiency and back furnace effect.

Description

Technical Field

[0001] This utility model belongs to the field of heating furnace technology, and in particular relates to a walking beam detection device for billet return based on a walking beam heating furnace. Background Technology

[0002] The thick plate heating furnace is a walking beam furnace. If there is an abnormality in the rolling mill after normal steel tapping, the billet needs to be returned to the furnace. The conventional method is to wait for the billet to cool naturally before re-entering it from the furnace feed point for re-firing. This method is wasteful of heating and takes a long time. In order to improve efficiency, the billet can be returned directly from the tapping point. However, it is difficult to accurately determine the position of the walking beam manually. After the furnace door is opened, the temperature inside is too high to be accurately observed. If the billet is not positioned accurately during return, it may cause the tapping machine to jam or the billet to fall into the bottom of the furnace after entering the furnace. This will prevent the furnace from tapping steel and directly shut down the furnace. During the process, the billet needs to be kicked and cooled down. After the problem is solved, the furnace needs to be restarted and dried. The whole process takes a lot of time and results in a huge loss of output. Therefore, how to effectively ensure the return of billets online has become an urgent problem to be solved.

[0003] Since the walking beam is driven by a hydraulic cylinder / motor and gear rack, the transmission chain includes factors such as hydraulic valve response delay, gear backlash, wear, thermal deformation in the heating furnace, and load disturbance. Therefore, if a detection device is only installed at the drive point of the walking beam, errors will occur. Thus, it is necessary to perform position detection on the walking beam itself. Summary of the Invention

[0004] The purpose of this invention is to provide a walking beam detection device for billet return based on a walking beam furnace. By designing a novel probe-type detection device, the detection area at the end of the walking beam is enlarged through an expansion plate. At the same time, a telescopic and elastic probe makes mechanical contact with the expansion plate. The position of the walking beam is detected by a proximity sensor. This enables precise detection, ensuring the stability and positional accuracy of the billet during subsequent return to the furnace, avoiding the problem of billet falling out of the furnace, and improving work efficiency and return effect.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a walking beam detection device for billet return based on a walking beam heating furnace, including a walking beam body, an expansion plate and a detection device body;

[0007] The expansion plate is fixed to the front end of the stepping beam.

[0008] The detection device body includes a probe, a furnace wall water-cooled jacket, a roller side support, and a proximity sensor;

[0009] The probe includes an inner tube and an outer tube, with a water-cooled cavity formed between the inner and outer tubes. A sealing plate is fixed between the front ends of the inner and outer tubes, and an arc-shaped ceramic contact head is fixed to the outside of the sealing plate. A sealing ring covering the water-cooled cavity is fixed between the tail ends of the inner and outer tubes. Several connection ports are provided on the circumferential side of the inner tube near the ceramic contact head. An input connector connected to the inner tube is fixed to the outside of the sealing ring, and an output connector connected to the water-cooled cavity is fixed to the circumferential side of the tail end of the outer tube.

[0010] The probe rods are distributed parallel to the stepping beam and the ceramic contact heads face the expansion plate;

[0011] A front support is fixed to the front side of the top of the roller conveyor side support. The tail end of the probe rod passes through the front support and is slidably connected to the front support. A front plate and a rear plate are fixed to the tail end of the probe rod. The output connector is located behind the rear plate. The front support is located between the front plate and the rear plate. A return spring is provided between the front support and the front plate.

[0012] A metal sheet is fixed to the rear side of the rear end plate, a rear support is fixed to the top rear side of the roller conveyor side bracket, a horizontal water-cooling jacket is fixed on the rear support, and the proximity sensor is fixed inside the horizontal water-cooling jacket and arranged opposite to the metal sheet.

[0013] Furthermore, it also includes the furnace wall on the side of the furnace door of the heating furnace, wherein a preset opening is provided on the furnace wall on the side of the furnace door, and the furnace wall water cooling jacket is disposed in the preset opening and the space between the furnace wall and the preset opening is filled with an ultra-high temperature seal.

[0014] Furthermore, the outer tube is provided with a ceramic protective layer on its circumferential side, the ceramic protective layer is provided with a platform portion on its circumferential side, and the inner wall of the furnace water-cooling jacket is provided with a positioning platform that cooperates with the platform portion.

[0015] Furthermore, the top edge of the expansion plate is located below or flush with the top surface of the stepping beam, and the bottom of the expansion plate extends beyond the bottom surface of the stepping beam.

[0016] Furthermore, the ceramic contact head includes a hemispherical head, and the flat end of the head is provided with a sleeve portion, which is sleeved and fixed to the front end of the probe rod.

[0017] Furthermore, the roller conveyor side support includes a vertical plate portion, the vertical plate portion is provided with a roller conveyor installation port, the top edge of the vertical plate portion is provided with a horizontal plate portion, the front support and the rear support are both fixed on the horizontal plate portion and a first stiffener is provided at the connection point, and a second stiffener is provided between the vertical plate portion and the horizontal plate portion.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model designs a novel probe-type detection device, which enlarges the detection area at the end of the walking beam through an expansion plate. At the same time, the probe, which is telescopic and elastic, makes mechanical contact with the expansion plate. The position of the walking beam is detected by a proximity sensor. This enables precise detection, ensuring the stability and positional accuracy of the subsequent steel billet reheating, avoiding the problem of billet falling out of the furnace, and improving work efficiency and reheating effect.

[0020] 2. This utility model, through the design of a water-cooled probe structure, can reduce the influence of temperature on the probe. At the same time, the proximity sensor used for detection, the spring section used for elasticity, and the roller side bracket used for installation are installed outside the heating furnace, which can reduce the influence of high temperature inside the furnace and improve service life.

[0021] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a walking beam detection device for billet return based on a walking beam furnace according to the present invention.

[0024] Figure 2 This is a cross-sectional view of the main body of the detection device;

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1-Stepping beam, 2-Expansion plate, 3-Probe rod, 4-Furnace wall water-cooling jacket, 5-Roller side support, 6-Proximity sensor, 7-Heating furnace door side wall, 301-Inner tube, 302-Outer tube, 303-Sealing plate, 304-Ceramic contact head, 305-Sealing ring, 306-Input connector, 307-Output connector, 308-Connection port, 309-Rear end plate, 310-Front end plate, 311-Reset spring, 312-Metal sheet, 313-Platform section, 401-Positioning platform, 501-Front support, 502-Rear support, 503-Horizontal water-cooling jacket, 504-Horizontal plate section, 505-First stiffener, 506-Second stiffener, 507-Vertical plate section. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-2 As shown, this utility model is a walking beam detection device for billet return based on a walking beam furnace, including a walking beam body 1, an expansion plate 2 and a detection device body. The detection device body is misaligned with the hook arm of the hook steel device for steel tapping, and the height of the detection device body is set low. The expansion plate 2 expands the detection area of ​​the walking beam body 1 to avoid mechanical interference during steel tapping.

[0029] The expansion plate 2 is fixed to the front end of the stepping beam 1. The material of the expansion plate 2 is the same as that of the stepping beam 1, and they are connected by welding.

[0030] The detection device body includes a probe rod 3, a furnace wall water-cooled jacket 4, a roller side support 5, and a proximity sensor 6. The proximity sensor 6 is a high-temperature resistant proximity sensor (such as a ceramic-encapsulated or fiber optic sensor).

[0031] The probe 3 includes an inner tube 301 and an outer tube 302, forming a water-cooled cavity between the inner tube 301 and the outer tube 302. A sealing plate 303 is fixed between the front ends of the inner tube 301 and the outer tube 302. An arc-shaped ceramic contact head 304 is fixed on the outside of the sealing plate 303. A sealing ring 305 covering the water-cooled cavity is fixed between the tail ends of the inner tube 301 and the outer tube 302. Several connection ports 308 are provided on the circumferential side of the inner tube 301 near the ceramic contact head 304. An input connector 306 connected to the inner tube 301 is fixed on the outside of the sealing ring 305. An output connector 307 connected to the water-cooled cavity is fixed on the circumferential side of the tail end of the outer tube 302.

[0032] The probe rod 3 is distributed parallel to the stepping beam 1 and the ceramic contact head 304 faces the expansion plate 2;

[0033] A front support 501 is fixed to the front side of the top of the roller conveyor side support 5. The tail end of the probe rod 3 passes through the front support 501 and is slidably connected to the front support 501. A front plate 310 and a rear plate 309 are fixed to the tail end of the probe rod 3. The output connector 307 is located behind the rear plate 309. The front support 501 is located between the front plate 310 and the rear plate 309. A return spring 311 is provided between the front support 501 and the front plate 310.

[0034] A metal sheet 312 is fixed to the rear side of the rear end plate 309. A rear support 502 is fixed to the top rear side of the roller side bracket 5. A horizontal water cooling jacket 503 is fixed on the rear support 502. The proximity sensor 6 is fixed inside the horizontal water cooling jacket 503 and arranged opposite to the metal sheet 312.

[0035] Among them, such as Figure 2 As shown, it also includes a furnace wall 7 on the side of the furnace door of the heating furnace. A preset opening is provided on the furnace wall 7 on the side of the furnace door of the heating furnace. The furnace wall water cooling jacket 4 is set in the preset opening and is filled with an ultra-high temperature seal between it and the preset opening. The ultra-high temperature seal uses filler (such as ceramic fiber).

[0036] Among them, such as Figure 1 As shown, the outer tube 302 has a ceramic protective layer on its periphery, and a platform part 313 is provided on the periphery of the ceramic protective layer. The inner wall of the furnace water cooling jacket 4 has a positioning platform 401 that cooperates with the platform part 313.

[0037] The top edge of the expansion plate 2 is located below or flush with the top surface of the stepping beam 1, and the bottom of the expansion plate 2 extends beyond the bottom surface of the stepping beam 1.

[0038] Among them, such as Figure 1-2 As shown, the ceramic contact head 304 includes a hemispherical head, and a sleeve portion is provided at the flat end of the head. The sleeve portion is sleeved and fixed to the front end of the probe rod 3.

[0039] Among them, such as Figure 1 As shown, the roller conveyor side support 5 includes a vertical plate portion 507, on which a roller conveyor mounting opening is provided. A horizontal plate portion 504 is provided on the top edge of the vertical plate portion 507. The front support 501 and the rear support 502 are both fixed on the horizontal plate portion 504 and a first stiffening plate 505 is provided at the connection. A second stiffening plate 506 is provided between the vertical plate portion 507 and the horizontal plate portion 504. The roller conveyor side support 5 is installed at the roller conveyor.

[0040] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A walking beam detection device for billet return based on a walking beam furnace, comprising a walking beam body (1) and a detection device body, characterized in that: It also includes the expansion plate (2); The expansion plate (2) is fixed to the front end of the step beam body (1); The detection device body includes a probe (3), a furnace wall water cooling jacket (4), a roller side support (5), and a proximity sensor (6). The probe (3) includes an inner tube (301) and an outer tube (302). A water-cooled cavity is formed between the inner tube (301) and the outer tube (302). A sealing plate (303) is fixed between the front ends of the inner tube (301) and the outer tube (302). An arc-shaped ceramic contact head (304) is fixed on the outside of the sealing plate (303). A sealing ring (305) covering the water-cooled cavity is fixed between the tail ends of the inner tube (301) and the outer tube (302). Several connection ports (308) are provided on the circumferential side of the inner tube (301) near the ceramic contact head (304). An input connector (306) connected to the inner tube (301) is fixed on the outside of the sealing ring (305). An output connector (307) connected to the water-cooled cavity is fixed on the circumferential side of the tail end of the outer tube (302). The probe (3) is distributed parallel to the step beam (1) and the ceramic contact head (304) faces the expansion plate (2); The front support (501) is fixed to the top front side of the roller conveyor side bracket (5). The tail end of the probe (3) passes through the front support (501) and is slidably connected to the front support (501). The tail end of the probe (3) is fixed with a front end plate (310) and a rear end plate (309). The output connector (307) is located behind the rear end plate (309). The front support (501) is located between the front end plate (310) and the rear end plate (309). A return spring (311) is provided between the front support (501) and the front end plate (310). A metal sheet (312) is fixed to the rear side of the rear end plate (309), a rear support (502) is fixed to the top rear side of the roller side bracket (5), a horizontal water cooling jacket (503) is fixed on the rear support (502), and the proximity sensor (6) is fixed inside the horizontal water cooling jacket (503) and arranged opposite to the metal sheet (312).

2. The walking beam detection device for billet return based on a walking beam furnace according to claim 1, characterized in that, It also includes the furnace wall (7) on the side of the furnace door of the heating furnace, which has a preset opening. The furnace wall water cooling jacket (4) is set in the preset opening and is filled with an ultra-high temperature seal between it and the preset opening.

3. The walking beam detection device for billet return based on a walking beam furnace according to claim 1, characterized in that, The outer tube (302) is provided with a ceramic protective layer on its periphery, and the ceramic protective layer is provided with a platform (313) on its periphery. The inner wall of the furnace wall water cooling jacket (4) is provided with a positioning platform (401) that cooperates with the platform (313).

4. The walking beam detection device for billet return based on a walking beam heating furnace according to claim 1, characterized in that, The top edge of the expansion plate (2) is located below the top surface of the stepping beam (1) or flush with the top surface of the stepping beam (1), and the bottom of the expansion plate (2) extends beyond the bottom surface of the stepping beam (1).

5. The walking beam detection device for billet return based on a walking beam furnace according to claim 1, characterized in that, The ceramic contact head (304) includes a hemispherical head, and the flat end of the head is provided with a sleeve, which is sleeved and fixed to the front end of the probe (3).

6. The walking beam detection device for billet return based on a walking beam furnace according to claim 1, characterized in that, The roller conveyor side support (5) includes a vertical plate portion (507), the vertical plate portion (507) is provided with a roller conveyor mounting port, the top edge of the vertical plate portion (507) is provided with a horizontal plate portion (504), the front support (501) and the rear support (502) are both fixed on the horizontal plate portion (504) and a first stiffener (505) is provided at the connection, and a second stiffener (506) is provided between the vertical plate portion (507) and the horizontal plate portion (504).

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