Slag line diameter measuring device suitable for tundish stopper rod

Abstract

A slag line diameter measuring device suitable for a tundish stopper rod comprises a displacement part, a lifting part, a rotating disc, a limiting part and a diameter measuring part. The lifting part is arranged on the displacement part; the turntable is arranged on the lifting part; the limiting part and the diameter measuring part are arranged on the turntable; the bottom plate, the vertical plate and the universal wheels are arranged; the vertical plate is vertically arranged at one end of the top end face of the bottom plate, and a supporting frame is connected between the side wall of the vertical plate and the top end face of the bottom plate. Universal wheels are arranged at the four corners of the bottom end face of the bottom plate. According to the utility model, the outer diameter measurement efficiency and precision at the slag line position of the tundish stopper rod are improved.

Description

Technical Field

[0001] This utility model relates to a diameter measuring device, and more particularly to a device capable of measuring the outer diameter of the portion of the tundish stopper rod located between the protective slag and the molten steel, belonging to the technical field of tundish stopper rod diameter measuring equipment. Background Technology

[0002] In continuous casting, molten steel is poured from the ladle into the tundish, then diverted from the tundish to the crystallizer. The molten steel flows through the nozzle via the tundish stopper rod and solidifies into a billet. After the tundish is brought online, the stopper rod is completely immersed in the molten steel, forming a "slag line" between the molten steel and slag interface. This area is more severely corroded than other parts, becoming the most vulnerable part of the rod. The portion of the stopper rod located at the slag line is prone to breakage during production, leading to production interruptions. Currently, the outer diameter of the stopper rod at the slag line is measured by deliberately lowering the molten steel level in the tundish to expose the slag line, then manually visually estimating the diameter to determine the stopper rod's service life. However, manual visual estimation has significant errors and cannot accurately determine the outer diameter of the stopper rod at the slag line, making it impossible to accurately predict the stopper rod's lifespan and increasing the risk of breakage. Therefore, a diameter measuring device is needed that can accurately measure the outer diameter of the stopper rod at the slag line. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a slag line diameter measuring device suitable for tundish stopper rods, which can accurately measure the outer diameter of the part of the stopper rod corroded by the slag line.

[0004] The problem described in this utility model is solved by the following technical solution:

[0005] A slag line diameter measuring device suitable for tundish stopper rods includes a displacement section, a lifting section, a turntable, a limiting section, and a diameter measuring section; the lifting section is disposed on the displacement section; the turntable is disposed on the lifting section; the limiting section and the diameter measuring section are both disposed on the turntable; a base plate, a vertical plate, and casters are included; the vertical plate is vertically disposed at one end of the top surface of the base plate, and a support frame is connected between the side wall of the vertical plate and the top surface of the base plate; casters are provided at the four corners of the bottom surface of the base plate.

[0006] The above-mentioned slag line diameter measuring device applicable to tundish stopper rods includes a lifting part comprising a fixed horizontal plate, a guide plate, a lifting plate, and a rope puller. The fixed horizontal plate is located at the top of the side wall of the vertical plate. Guide holes are provided on both sides of the fixed horizontal plate, and a guide plate passes through each guide hole. The bottom end of the guide plate is connected to one end of the top surface of the lifting plate. The lifting plate is located below the fixed horizontal plate. The rope puller is located on the fixed horizontal plate, and its rope passes through a hole in the fixed horizontal plate and connects to the top surface of the lifting plate.

[0007] The above-mentioned slag line diameter measuring device applicable to the tundish stopper rod has a circular hole at the center of the lifting plate, and a limiting groove on the inner wall of the circular hole; a limiting strip is provided on the outer circumference of the turntable, and the limiting strip on the side wall of the turntable is set on the inner wall of the central hole of the lifting plate; the outer circumference of the turntable is in contact with the inner wall of the central hole of the lifting plate.

[0008] The above-mentioned slag line diameter measuring device applicable to tundish stopper rods includes a diameter measuring part comprising a first diameter measuring mechanism, a second diameter measuring mechanism, and a distance measuring mechanism; a strip-shaped hole is provided at the center of the turntable along its radial direction; the first diameter measuring mechanism and the second diameter measuring mechanism are both located in the strip-shaped hole at the center of the turntable; and the distance measuring mechanism is located between the first diameter measuring mechanism and the second diameter measuring mechanism.

[0009] The above-mentioned slag line diameter measuring device applicable to tundish stopper rods includes a first diameter measuring mechanism comprising a first plumb rod, a first upper limit block, a first lower limit block, and a first horizontal plate. The first plumb rod passes through the central strip-shaped hole of the turntable. The first upper limit block and the first lower limit block are both disposed on the side wall of the first plumb rod, with the bottom end face of the first upper limit block pressing against the top end face of the turntable and the top end face of the first lower limit block pressing against the bottom end face of the turntable. The first horizontal plate is disposed at the bottom end of the end face of the first plumb rod near the second diameter measuring mechanism. The plane of the first horizontal plate is horizontal, and the long side wall of the first horizontal plate is connected to the side wall of the first plumb rod.

[0010] The above-mentioned slag line diameter measuring device applicable to tundish stopper rods includes a second diameter measuring mechanism comprising a second plumb rod, a second upper limit block, a second lower limit block, and a second horizontal thin plate. The second plumb rod passes through the central strip-shaped hole of the turntable. The second upper limit block and the second lower limit block are both disposed on the side wall of the second plumb rod, with the bottom end face of the second upper limit block pressing against the top end face of the turntable, and the top end face of the second lower limit block pressing against the bottom end face of the turntable. The second horizontal thin plate is disposed at the bottom end of the end face of the second plumb rod near the first plumb rod. The plane of the second horizontal thin plate is horizontal, and the long side wall of the second horizontal thin plate is connected to the side wall of the second plumb rod.

[0011] The above-mentioned slag line diameter measuring device applicable to tundish stopper rods includes a measuring mechanism comprising a measuring ruler and a spring; a measuring ruler is provided at the top end of the first plumb rod near the second plumb rod, and a square hole is provided at the top end of the second plumb rod, through which the measuring ruler passes; the length direction line of the measuring ruler is a horizontal line; the inner wall of the square hole of the second plumb rod is in contact with the outer wall of the measuring ruler; a spring connects the first plumb rod and the second plumb rod.

[0012] The above-mentioned slag line diameter measuring device applicable to the tundish stopper rod includes a limiting part comprising a slide rail and a limiting strip; the slide rail is disposed on the top surface of the turntable, and the limiting strip is slidably disposed on the slide rail; the length direction line of the slide rail is perpendicular to the length direction line of the strip-shaped hole of the turntable; the center line of the limiting strip is parallel to the length direction line of the strip-shaped hole of the turntable; the two ends of the limiting strip respectively touch the end faces of the first upper limiting block and the second upper limiting block that are close to each other.

[0013] This invention uses a displacement part to move the rest of the parts above the stopper rod; and a lifting part to lift the measuring part, so that it can contact the outer wall of the stopper rod corroded by the slag line, and finally measure the outer diameter of the corroded part of the stopper rod. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a partially enlarged structural diagram of A of this utility model.

[0016] The list of items labeled in the diagram is as follows: 1. Turntable, 2. Base plate, 3. Vertical plate, 4. Fixed horizontal plate, 5. Guide plate, 6. Lifting plate, 7. Rope puller, 8. First plumb line, 9. First upper limit block, 10. First horizontal plate, 11. Second diameter measuring mechanism, 12. Measuring ruler, 13. Spring, 14. Slide rail, 15. Limiting strip. Detailed Implementation

[0017] See Figure 1 This utility model includes a displacement part, a lifting part, a turntable 1, a limiting part, and a diameter measuring part; the lifting part is disposed on the displacement part; the displacement part can drive the rest of the parts to move; the lifting part can drive the limiting part and the diameter measuring part to rise and fall; the limiting part is used to limit the distance between the two vertical rods; the diameter measuring part is used to measure the outer diameter of the stopper rod at a specified position; the turntable 1 is disposed on the lifting part; the turntable 1 can rotate, thereby driving the diameter measuring part to rotate, and through the rotation of the diameter measuring part, the measurement of the outer diameter at the slag line position of the stopper rod is more comprehensive and accurate; the limiting part and the diameter measuring part are both disposed on the turntable 1.

[0018] The device comprises a base plate 2, an upright plate 3, and casters. The upright plate 3 is vertically mounted at one end of the top surface of the base plate 2, and a support frame is connected between the side wall of the upright plate 3 and the top surface of the base plate 2. Casters are provided at all four corners of the bottom surface of the base plate 2. The combination of the base plate 2 and the upright plate 3 can move on the top cover of the tundish via the casters. The top cover is provided with a rod mounting hole, through which the stopper rod extends into the tundish. The device moves to the rod mounting hole and is positioned directly above the stopper rod by the movement of the casters.

[0019] The lifting mechanism includes a fixed horizontal plate 4, a guide plate 5, a lifting plate 6, and a rope puller 7. The fixed horizontal plate 4 is located at the top of the side wall of the vertical plate 3. Guide holes are provided on both sides of the fixed horizontal plate 4, and a guide plate 5 passes through each guide hole. The guide plate 5 provides guidance for the lifting plate 6 during its lifting process, ensuring reliable lifting. The bottom end of the guide plate 5 is connected to one end of the top surface of the lifting plate 6. The lifting plate 6 is located below the fixed horizontal plate 4. The rope puller 7 is located on the fixed horizontal plate 4, and its rope passes through a hole in the fixed horizontal plate 4 and connects to the top surface of the lifting plate 6. The lifting plate 6 is lifted by pulling and releasing the rope of the rope puller.

[0020] A circular hole is provided at the center of the lifting plate 6, and a limiting groove is provided on the inner wall of the circular hole; a limiting strip is provided on the outer circumference of the turntable 1, and the limiting strip on the side wall of the turntable 1 is provided on the inner wall of the central hole of the lifting plate 6; the outer circumference of the turntable 1 is in contact with the inner wall of the central hole of the lifting plate 6; with the cooperation of the limiting strip and the limiting groove, the turntable 1 can rotate in place at the central hole of the lifting plate 6.

[0021] The diameter measuring section includes a first diameter measuring mechanism, a second diameter measuring mechanism 11, and a distance measuring mechanism; a strip-shaped hole is provided at the center of the turntable 1 along its radial direction; the first diameter measuring mechanism and the second diameter measuring mechanism 11 are both located in the strip-shaped hole at the center of the turntable 1; the first diameter measuring mechanism and the second diameter measuring mechanism slide within the strip-shaped hole at the center of the turntable 1, moving closer to or further away from each other; the distance measuring mechanism is located between the first diameter measuring mechanism and the second diameter measuring mechanism 11; the distance between the first diameter measuring mechanism and the second diameter measuring mechanism corresponds to the outer diameter at the stopper rod slag line position, and the outer diameter at the stopper rod slag line position can be indirectly determined through the distance measuring mechanism.

[0022] The first diameter measuring mechanism includes a first plumb line 8, a first upper limit block 9, a first lower limit block, and a first horizontal sheet 10; the first plumb line 8 passes through the central strip hole of the turntable 1; the first upper limit block 9 and the first lower limit block are both disposed on the side wall of the first plumb line 8, and the bottom end face of the first upper limit block 9 presses against the top end face of the turntable 1, and the top end face of the first lower limit block presses against the bottom end face of the turntable 1; the cooperation of the first upper limit block 9 and the first lower limit block allows the first plumb line 8 to move reliably within the strip hole of the turntable 1 without detaching from the turntable; the first horizontal sheet 10 is disposed at the bottom end of the end face of the first plumb line 8 near the second diameter measuring mechanism 11; The first horizontal thin plate 10 is used to contact the position of the stopper rod corroded by the slag line. The first horizontal thin plate and the second horizontal thin plate can clamp the outer wall of the stopper rod at the position corroded by the slag line. The minimum distance between the two thin plates is the outer diameter of the stopper rod at the corresponding position. It can be seen that the distance between the first and second vertical rods minus the width of the first horizontal thin plate and the width of the second horizontal thin plate is the outer diameter parameter of the stopper rod at the slag line position. The plane of the first horizontal thin plate 10 is a horizontal plane, and the long side wall of the first horizontal thin plate 10 is connected to the side wall of the first vertical rod 8. It can be seen that when the horizontal thin plate contacts the outer wall of the stopper rod, the minimum distance between the stopper rod and the vertical rod is the width of the thin plate.

[0023] The principle of the second diameter measuring mechanism 11 is completely the same as that of the first diameter measuring mechanism. By clamping the outer diameter of the stopper rod with the first and second horizontal thin plates, the outer diameter parameter at the corrosion position of the stopper rod slag line can be calculated. The second diameter measuring mechanism 11 includes a second plumb rod, a second upper limit block, a second lower limit block, and a second horizontal thin plate. The second plumb rod passes through the central strip hole of the turntable 1. The second upper limit block and the second lower limit block are both set on the side wall of the second plumb rod, and the bottom end face of the second upper limit block touches the top end face of the turntable 1, and the top end face of the second lower limit block touches the bottom end face of the turntable 1. The second horizontal thin plate is set at the bottom end of the end face of the second plumb rod near the first plumb rod 8. The plane of the second horizontal thin plate is horizontal, and the long side wall of the second horizontal thin plate is connected to the side wall of the second plumb rod.

[0024] The distance measuring mechanism includes a distance measuring ruler 12 and a spring 13; the distance measuring ruler 12 is provided at the top end of the first plumb rod 8 near the second plumb rod, and a square hole is provided at the top end of the second plumb rod, through which the distance measuring ruler 12 passes; the reading at the junction of the square hole of the second plumb rod and the distance measuring ruler 12 is the distance between the first plumb rod and the second plumb rod; the length direction line of the distance measuring ruler 12 is a horizontal line; the inner wall of the square hole of the second plumb rod is in contact with the outer wall of the distance measuring ruler 12; a spring 13 is connected between the first plumb rod 8 and the second plumb rod; the spring 13 provides a force for the two plumb rods to move closer to each other, ensuring that the thin plates at the bottom ends of the two plumb rods can be pressed tightly against the outer wall of the stopper rod.

[0025] The limiting part includes a slide rail 14 and a limiting strip 15; the slide rail 14 is disposed on the top surface of the turntable 1, and the limiting strip 15 is slidably disposed on the slide rail 14; the limiting strip 15 slides on the slide rail 14, thereby sliding between the two upper limit blocks and disengaging from the two upper limit blocks; the length direction line of the slide rail 14 is perpendicular to the length direction line of the strip-shaped hole of the turntable 1; the center line of the limiting strip 15 is parallel to the length direction line of the strip-shaped hole of the turntable 1; the two ends of the limiting strip 15 respectively touch the end faces of the first upper limit block 9 and the second upper limit block that are close to each other; when the sheet moves downward, in order to ensure that the sheet moves downward smoothly, the two sheets need not contact the stopper rod temporarily, and the stopper rod is located between the two sheets. At this time, the limiting strip 15 presses against the upper limit blocks on both sides, ensuring that the sheets on both sides do not contact the stopper rod, and ensuring that the first horizontal sheet and the second horizontal sheet move downward smoothly along the stopper rod until the two sheets move to the corrosion position of the slag line of the stopper rod and stop moving downward.

[0026] Operating principle: During the process of pouring molten steel in the ladle and changing ladles, the molten steel level in the tundish begins to drop. After the slag line of the stopper rod is exposed, this device is placed on the top cover of the tundish and moved directly above the stopper rod. The position of this device is finely adjusted so that the center point of turntable 1 is directly above the center of the stopper rod. In the initial state, the limiting bar is located between the first and second upper limit blocks. At this time, the vertical bars on both sides cannot approach, and the thin plates on both sides cannot approach either. Then, the rope puller is activated to lower the lifting plate. The first and second horizontal thin plates descend, and the stopper rod is located between the two thin plates but does not contact them. After the vertical height of the first and second horizontal thin plates coincides with the slag line corrosion position of the stopper rod, the limiting bar 15 is pushed to release the restriction on the upper limit blocks. Under the action of the spring... The two vertical rods move closer together until the horizontal plates on both sides clamp the outer wall of the stopper rod corroded by the slag line. At this time, the corresponding reading on the measuring scale 12 minus the width of the first and second horizontal plates is the outer diameter of the stopper rod at the slag line position. Then, the turntable 1 is rotated, and the plates on both sides move circumferentially while clamping the outer wall of the stopper rod at the slag line position. The outer diameter of the stopper rod at the slag line corrosion position is measured along the circumference of the stopper rod. The changes in the measuring scale data are recorded. Then, the actual situation of the stopper rod is judged based on the recorded data, and finally, it is determined whether the stopper rod can continue to be used normally. After the measurement is completed, the two vertical rods are manually separated, and the limit strip 15 is pushed to re-separate the two upper limit blocks. Then, the rope puller is controlled to drive the lifting plate 6 upward, and finally, the device is removed.

Claims

1. A slag line diameter measuring device suitable for tundish stopper rods, characterized in that: It includes a displacement section, a lifting section, a turntable (1), a limiting section, and a diameter measuring section; the lifting section is set on the displacement section; the turntable (1) is set on the lifting section; the limiting section and the diameter measuring section are both set on the turntable (1); the base plate (2), the upright plate (3), and the casters; the upright plate (3) is vertically set at one end of the top surface of the base plate (2), and a support frame is connected between the side wall of the upright plate (3) and the top surface of the base plate (2); casters are provided at the four corners of the bottom surface of the base plate (2).

2. The slag line diameter measuring device for tundish stopper rods according to claim 1, characterized in that: The lifting mechanism includes a fixed horizontal plate (4), a guide plate (5), a lifting plate (6), and a rope puller (7); the fixed horizontal plate (4) is located at the top of the side wall of the vertical plate (3); both sides of the fixed horizontal plate (4) are provided with guide holes, and each guide hole is provided with a guide plate (5); the bottom end of the guide plate (5) is connected to one end of the top surface of the lifting plate (6); the lifting plate (6) is located below the fixed horizontal plate (4); the rope puller (7) is located on the fixed horizontal plate (4), and its rope passes through the hole on the fixed horizontal plate (4) and connects to the top surface of the lifting plate (6).

3. The slag line diameter measuring device suitable for tundish stopper rod according to claim 2, characterized in that: The lifting plate (6) has a circular hole at its center and a limiting groove on the inner wall of the circular hole; the turntable (1) has a limiting strip on its outer circumference and the limiting strip on the side wall of the turntable (1) is located on the inner wall of the central hole of the lifting plate (6); the outer circumference of the turntable (1) is in contact with the inner wall of the central hole of the lifting plate (6).

4. The slag line diameter measuring device for tundish stopper rods according to claim 3, characterized in that: The diameter measuring part includes a first diameter measuring mechanism, a second diameter measuring mechanism (11) and a distance measuring mechanism; the center of the turntable (1) is provided with a strip-shaped hole along its radial direction; the first diameter measuring mechanism and the second diameter measuring mechanism (11) are both located in the strip-shaped hole in the center of the turntable (1); the distance measuring mechanism is located between the first diameter measuring mechanism and the second diameter measuring mechanism (11).

5. The slag line diameter measuring device for tundish stopper rods according to claim 4, characterized in that: The first diameter measuring mechanism includes a first plumb rod (8), a first upper limit block (9), a first lower limit block, and a first horizontal sheet (10); the first plumb rod (8) passes through the central strip hole of the turntable (1); the first upper limit block (9) and the first lower limit block are both disposed on the side wall of the first plumb rod (8), and the bottom end face of the first upper limit block (9) presses against the top end face of the turntable (1), and the top end face of the first lower limit block presses against the bottom end face of the turntable (1); the first horizontal sheet (10) is disposed at the bottom end of the end face of the first plumb rod (8) near the second diameter measuring mechanism (11); the plane of the first horizontal sheet (10) is horizontal, and the long side wall of the first horizontal sheet (10) is connected to the side wall of the first plumb rod (8).

6. The slag line diameter measuring device for tundish stopper rod according to claim 5, characterized in that: The second diameter measuring mechanism (11) includes a second plumb rod, a second upper limit block, a second lower limit block, and a second horizontal sheet; the second plumb rod passes through the central strip hole of the turntable (1); the second upper limit block and the second lower limit block are both disposed on the side wall of the second plumb rod, and the bottom end face of the second upper limit block presses against the top end face of the turntable (1), and the top end face of the second lower limit block presses against the bottom end face of the turntable (1); the second horizontal sheet is disposed at the bottom end of the end face of the second plumb rod near the first plumb rod (8); the plane of the second horizontal sheet is horizontal, and the long side wall of the second horizontal sheet is connected to the side wall of the second plumb rod.

7. The slag line diameter measuring device suitable for tundish stopper rod according to claim 6, characterized in that: The distance measuring mechanism includes a distance measuring ruler (12) and a spring (13); the distance measuring ruler (12) is provided at the top end of the first plumb rod (8) near the second plumb rod, and a square hole is provided at the top end of the second plumb rod, and the distance measuring ruler (12) passes through the square hole of the second plumb rod; the length direction line of the distance measuring ruler (12) is a horizontal line; the inner wall of the square hole of the second plumb rod is in contact with the outer wall of the distance measuring ruler (12); a spring (13) is connected between the first plumb rod (8) and the second plumb rod.

8. The slag line diameter measuring device for tundish stopper rods according to claim 7, characterized in that: The limiting part includes a slide rail (14) and a limiting strip (15); the slide rail (14) is disposed on the top surface of the turntable (1), and the limiting strip (15) is slidably disposed on the slide rail (14); the length direction line of the slide rail (14) is perpendicular to the length direction line of the strip hole of the turntable (1); the center line of the limiting strip (15) is parallel to the length direction line of the strip hole of the turntable (1); the two ends of the limiting strip (15) respectively touch the end faces of the first upper limit block (9) and the second upper limit block that are close to each other.

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