A stopper and method for a continuous casting mold vibration device

Abstract

The application belongs to the technical field of metallurgical continuous casting, and particularly relates to a stopper and method for a continuous-casting-machine crystallizer vibration device. The stopper for the continuous-casting-machine crystallizer vibration device is installed between a vibration-frame body and a fixed-frame body, and comprises a stop pin shaft, the lower part of which is fixedly connected with the fixed-frame body, and the upper part of which is fixedly connected with the vibration-frame body, a vibration-proof fixing assembly is arranged on the outer side of the lower part of the stop pin shaft and above the fixed-frame body, a bolt hole is arranged on the upper part of the stop pin shaft, and an adjustable stop component is connected in the bolt hole. The application has simple structure, is easy to install, and is convenient to adjust online. The start-vibration position of the vibration device, i.e. the vibration zero point, can be determined before a servo cylinder is installed, the vibration unit body is limited and protected, and mechanical damage caused by too large vibration amplitude of the vibration-frame body due to control system failure or other external factors is prevented.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of metallurgical continuous casting, and particularly relates to a stopper for a crystallizer vibration device of a continuous casting machine and a method. BACKGROUND

[0002] The crystallizer is a billet forming device in continuous steel casting and is a core component of the continuous casting machine, referred to as the heart device of the continuous casting machine. It is a water-cooled ingot mold, and its function is to strongly cool the high-temperature molten steel continuously injected into its cavity through the water-cooled copper wall, to lead out the heat, so that the molten steel gradually solidifies into a casting billet with a required cross-sectional shape and billet shell thickness. And the casting billet with a liquid core is continuously pulled out from the lower opening of the crystallizer, creating conditions for complete solidification in the secondary cooling area. Since the solidification process is carried out under continuous and relative movement of the billet shell and the crystallizer wall, the crystallizer vibration device used to prevent the billet shell from sticking to the crystallizer wall is a very important production device in the continuous casting process.

[0003] The crystallizer vibration device can be used to support the crystallizer, and its main function is to reciprocally vibrate the crystallizer up and down, or more precisely, to make the crystallizer move along the radius of the continuous casting machine in an arc-like manner with a given amplitude, frequency and waveform deflection characteristic, so as to make demolding easier. Specifically, during the continuous casting process, when the casting billet sticks to the crystallizer wall, if the crystallizer is fixed, the billet shell may be pulled apart, causing a breakout. When the crystallizer is vibrated upward, the sticking part and the crystallizer rise together, the billet shell is pulled apart, and the un-solidified molten steel immediately fills the broken part to begin forming a new solidification layer. When the crystallizer is vibrated downward and the vibration speed is greater than the pulling speed, the billet shell is in a compressed state, the crack is healed, and the connection is re-established, at the same time, the casting billet is forced to eliminate sticking, and "demolding" is obtained. At the same time, due to the up-and-down vibration of the crystallizer, the relative position of the liquid surface and the crystallizer wall is periodically changed, which is conducive to the leakage of lubricating oil and protective slag between the crystallizer wall and the billet shell for lubricating the crystallizer, thereby improving the lubrication conditions, reducing the pulling friction resistance, and preventing the billet from being pulled apart and sticking to the copper wall of the crystallizer during the solidification process, thereby avoiding sticking breakout accidents.

[0004] The existing crystallizer vibration device has the problems that when the control system fails or other external factors cause unexpected vibration of the vibration frame body with an excessively large amplitude, the vibration unit body itself is damaged, the crystallizer and the equipment installed below the crystallizer collide, the stroke of the servo hydraulic cylinder reaches the limit value, the cylinder body is damaged, or the sealing element is damaged, thereby reducing the service life of the servo hydraulic cylinder. SUMMARY

[0005] In view of the above problems, the present application aims to provide a position limiter and method for a continuous casting machine crystallizer vibration device, which is simple in structure, easy to install, convenient to adjust online, and capable of determining the vibration starting position of the vibration device, i.e., the vibration zero point, before the installation of a servo cylinder, and protecting the vibration unit body from excessive vibration amplitude caused by accidental vibration of the vibration frame body due to control system failure or other external factors.

[0006] The technical solution of the present application is as follows: a position limiter for a continuous casting machine crystallizer vibration device, which is installed between a vibration frame body and a fixed frame body, and comprises a position limiting pin shaft, a vibration-proof fixing assembly arranged on the outer side of the lower part of the position limiting pin shaft and above the fixed frame body, a bolt hole arranged on the upper part of the position limiting pin shaft, and an adjustable position limiting assembly connected in the bolt hole.

[0007] The vibration-proof fixing assembly comprises an adjusting gasket set and a pad, the pad is U-shaped, and a countersunk bolt hole is arranged on each U-shaped pad on the two sides of the position limiting pin shaft, a countersunk bolt is connected in the countersunk bolt hole, and the countersunk bolt is fixedly connected with the fixed frame body through the adjusting gasket set.

[0008] A U-shaped position limiting plate is arranged on the position limiting pin shaft between the upper part of the pad and the lower part of the vibration frame body.

[0009] The adjusting gasket set comprises a plurality of elastic gaskets.

[0010] The adjustable position limiting assembly comprises a bolt and a gland, the gland is located on the upper surface of the vibration frame body, the gland is concave, a mounting hole and a groove are arranged in the center of the gland, and the bolt is fixedly connected with the position limiting pin shaft through the mounting hole.

[0011] The diameter of the groove is greater than the outer diameter of the position limiting pin shaft, and the diameter of the mounting hole is smaller than the outer diameter of the position limiting pin shaft.

[0012] A round gasket is arranged between the gland and the vibration frame body, a through hole is arranged in the middle of the round gasket, the position limiting pin shaft passes through the through hole, and the diameter of the round gasket is the same as the outer diameter of the position limiting pin shaft.

[0013] The gap between the lower edge of the gland and the upper surface of the vibration frame body is 10±0.1 mm, and the thickness of the U-shaped position limiting plate is 10±0.1 mm.

[0014] A position limiting method for a continuous casting machine crystallizer vibration device, which uses the above-mentioned position limiter for a continuous casting machine crystallizer vibration device, and comprises the following steps:

[0015] S1: Confirm that the position limiter is installed at zero position, at this time the concave opening in the gland is downward, and the gland is screwed on the vibration frame body by bolts;

[0016] S2: Before starting the vibration device, adjust the position of the gland so that the concave opening in the gland is upward, the gland is buckled on the round washer on the limit pin shaft, and after adjusting the gap between the lower edge of the gland and the vibration frame body to 10±0.1 mm, the bolts are tightened to lock;

[0017] S3: Extract the U-shaped limit plugboard, start the vibration device, and the position limiter controls the vibration range of the vibration frame body to be kept at ±10 mm.

[0018] The technical effects of the present application are: 1. The present application ensures that the position limiter is fixed and pressed on the vibration frame body during installation and transportation by the cooperation of the gland and the bolt. After the zero position is adjusted on the production line, the gland needs to be buckled on the round washer on the limit pin shaft before the vibration device is started, so as to ensure the gap between the lower edge of the gland and the vibration frame body. The overall device structure is light and convenient to install on the production line; 2. The U-shaped limit plugboard is extracted before the vibration device is started, and the thickness of the U-shaped limit plugboard is 10±0.1 mm, thereby controlling the vibration range of the vibration frame body to be ±10 mm. This vibration range can be adjusted according to the actual situation of the equipment to prevent damage to the vibration unit body, collision between the crystallizer and the equipment installed below, damage to the cylinder body or the sealing element caused by the stroke of the servo hydraulic cylinder reaching the limit value, and reduction of the service life of the servo hydraulic cylinder, thereby protecting the equipment; 3. The present application has simple structure and is easy to install. The vibration zero point of the vibration device can be determined before the servo cylinder is installed, and the vibration unit body is limited and protected, preventing mechanical damage caused by excessive vibration amplitude of the vibration frame body due to control system failure or other external factors.

[0019] The following will be further described with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic diagram of the position limiter for the vibration device of the continuous casting machine crystallizer when the installation zero position is adjusted.

[0021] Figure 2 It is a structure schematic diagram of the position limiter for the vibration device of the continuous casting machine crystallizer when the installation zero position is adjusted.

[0022] Figure 3 It is a structure schematic diagram of the gland of the present application.

[0023] Figure 4 It is a three-dimensional schematic diagram of the installation position of the position limiter for the vibration device of the continuous casting machine crystallizer.

[0024] Figure 5 This is an enlarged schematic diagram of the installation position of a limiter for a continuous casting machine crystallizer vibration device according to an embodiment of the present invention.

[0025] Figure numerals: 1-vibration frame body, 2-fixed frame body, 3-adjusting gasket group, 4-pad, 5-U-shaped limiting plug plate, 6-limiting pin, 7-bolt, 8-round gasket, 9-pressure cover, 91-mounting hole, 92-groove. DETAILED DESCRIPTION Example 1

[0026] like Figures 1-5 As shown, a limiter for a continuous casting machine crystallizer vibration device is installed between a vibration frame body 1 and a fixed frame body 2, and includes a limit pin 6. The lower part of the limit pin 6 is fixedly connected to the fixed frame body 2, and the upper part of the limit pin 6 is fixedly connected to the vibration frame body 1. An anti-vibration fixing component is provided on the outer side of the lower part of the limit pin 6 and above the fixed frame body 2. A bolt hole is provided on the upper part of the limit pin 6, and an adjustable limit component is connected to the bolt hole.

[0027] During actual use, the lower part of the limit pin 6 of the present invention is fixedly connected to the fixing frame body 2, and the upper part of the limit pin 6 is fixedly connected to the vibration frame body 1. An anti-vibration fixing component is provided on the outer side of the lower part of the limit pin 6 and above the fixing frame body 2. A bolt hole is provided on the upper part of the limit pin 6, and an adjustable limit component is connected to the bolt hole. The adjustable limit component controls the vibration range of the vibration frame body to prevent damage to the vibration unit itself, collision between the crystallizer and the equipment installed thereunder, and damage to the cylinder body or seal due to the servo hydraulic cylinder stroke reaching the limit value, thereby reducing the life of the servo hydraulic cylinder, thereby protecting the equipment. Example 2

[0028] Preferably, based on Example 1, in this embodiment, the anti-vibration fixing assembly includes an adjusting gasket group 3 and a pad 4, the pad 4 is U-shaped, and countersunk bolt holes are respectively provided on the U-shaped pad 4 on both sides of the limiting pin shaft 6, and countersunk bolts are connected in the countersunk bolt holes, and the countersunk bolts pass through the adjusting gasket group 3 and are fixedly connected to the fixing frame body 2.

[0029] In actual use, the vibration-proof fixing assembly of the present invention includes an adjustment shim group 3 and a pad 4. The pad 4 is U-shaped. Countersunk bolt holes are respectively provided on the U-shaped pad 4 on both sides of the limit pin 6. Countersunk bolts are connected to the countersunk bolt holes. The countersunk bolts pass through the adjustment shim group 3 and are fixedly connected to the fixing frame body 2. The height of the vibration-proof fixing assembly can be changed by adjusting the thickness of the shim group 3, thereby controlling the vibration range of the vibration frame body. Example 3

[0030] Preferably, on the basis of Embodiment 1 or Embodiment 2, in the present embodiment, a U-shaped limiting insert plate 5 is arranged on the limiting pin shaft 6 between the upper side of the cushion block 4 and the lower side of the vibration frame body 1.

[0031] In actual use, the U-shaped limiting insert plate 5 is arranged on the limiting pin shaft 6 between the upper side of the cushion block 4 and the lower side of the vibration frame body 1, the U-shaped limiting insert plate 5 is pulled out before use, the vibration device is started, and the vibration range of the vibration frame body 1 is controlled by the limiter through the limiting pin shaft 6, which is convenient and fast. Embodiment 4

[0032] Preferably, on the basis of Embodiment 1 or Embodiment 3, in the present embodiment, the adjusting gasket set 3 comprises a plurality of elastic gaskets.

[0033] In actual use, the adjusting gasket set 3 comprises a plurality of elastic gaskets, which can quickly and accurately adjust the height of the anti-vibration fixing assembly, and then control the vibration range of the vibration frame body according to the actual situation. Embodiment 5

[0034] Preferably, on the basis of Embodiment 1 or Embodiment 4, in the present embodiment, as shown in the accompanying drawings, Figure 3 the adjustable limiting assembly comprises a bolt 7 and a gland 9, the gland 9 is located on the upper surface of the vibration frame body 1, the gland 9 is concave, and the center thereof is provided with a mounting hole 91 and a groove 92, and the bolt 7 is fixedly connected with the limiting pin shaft 6 through the mounting hole 91.

[0035] In actual use, the limiter is confirmed to be in the installation zero position before use, at which time the concave opening of the gland 9 is downward, and the vibration frame body 1 is pressed by tightening the bolt 7; before starting the vibration device, the position of the gland 9 is adjusted, so that the concave opening of the gland 9 is upward, the gland 9 is buckled on the round gasket 8 on the limiting pin shaft 6, and after adjusting the gap between the lower edge of the gland 9 and the vibration frame body 1 to 10±0.1 mm, the bolt 7 is tightened to lock. The present application ensures that the limiter is fixed and pressed on the vibration frame body during installation and transportation by the cooperation of the gland and the bolt, and after the zero position is adjusted on the production line, the gland needs to be buckled on the round gasket on the limiting pin shaft before the vibration device is started, so as to ensure the gap between the lower edge of the gland and the vibration frame body, and the overall device structure is light and convenient to install on the production line. Embodiment 6

[0036] Preferably, on the basis of Embodiment 1 or Embodiment 5, in the present embodiment, the diameter of the groove 92 is greater than the outer diameter of the limiting pin shaft 6, and the diameter of the mounting hole 91 is less than the outer diameter of the limiting pin shaft 6.

[0037] In actual use, the diameter of the groove 92 is greater than the outer diameter of the limiting pin shaft 6, and the diameter of the mounting hole 91 is smaller than the outer diameter of the limiting pin shaft 6. Before starting the vibration device, the position of the gland 9 is adjusted to ensure that the gland 9 is buckled on the limiting pin shaft 6. Embodiment 7

[0038] Preferably, on the basis of Embodiment 1 or Embodiment 6, in this embodiment, a round gasket 8 is arranged between the gland 9 and the vibration frame body 1, a through hole is arranged in the middle of the round gasket 8, the limiting pin shaft 6 passes through the through hole, and the diameter of the round gasket 8 is the same as the outer diameter of the limiting pin shaft 6.

[0039] In actual use, the round gasket 8 arranged between the gland 9 and the vibration frame body 1 facilitates adjustment of the limiting gap. Embodiment 8

[0040] Preferably, on the basis of Embodiment 1 or Embodiment 7, in this embodiment, the gap between the lower edge of the gland 9 and the upper surface of the vibration frame body 1 is 10±0.1 mm, and the thickness of the U-shaped limiting insert plate 5 is 10±0.1 mm.

[0041] In actual use, after the gap between the lower edge of the gland 9 and the vibration frame body 1 is adjusted to 10±0.1 mm, the bolt 7 is tightened to lock; the U-shaped limiting insert plate 5 is pulled out, the vibration device is started, and the vibration range of the vibration frame body 1 controlled by the limiting pin shaft 6 is kept at ±10 mm. The vibration range can be adjusted according to the actual situation of the equipment. Embodiment 9

[0042] A limiting method of a continuous casting machine mold vibration device, using the limiting device for the continuous casting machine mold vibration device described above, comprising the following steps:

[0043] S1: Before use, confirm that the limiting device is at the installation zero position, at this time, the inner concave opening of the gland 9 is downward, and the gland 9 is pressed on the vibration frame body 1 by tightening the bolt 7;

[0044] S2: Before starting the vibration device, the position of the gland 9 is adjusted so that the inner concave opening of the gland 9 is upward, the gland 9 is buckled on the round gasket 8 on the limiting pin shaft 6, and after the gap between the lower edge of the gland 9 and the vibration frame body 1 is adjusted to 10±0.1 mm, the bolt 7 is tightened to lock;

[0045] S3: The U-shaped limiting insert plate 5 is pulled out, the vibration device is started, and the vibration range of the vibration frame body 1 controlled by the limiting pin shaft 6 is kept at ±10 mm.

[0046] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A stopper for a continuous casting mold vibration device, the stopper being installed between a vibration frame body (1) and a fixed frame body (2), characterized in that: The vibration-proof fixing assembly is arranged on the outside of the lower part of the limiting pin shaft (6) and the upper part of the fixed frame body (2), the upper part of the limiting pin shaft (6) is provided with a bolt hole, and the bolt hole is connected with an adjustable limiting component; the U-shaped limiting insertion plate (5) is arranged on the limiting pin shaft (6) between the upper part of the cushion block (4) and the lower part of the vibration frame body (1); the adjustable limiting component comprises a bolt (7) and a gland (9), the gland (9) is located on the upper surface of the vibration frame body (1), the gland (9) is concave, the center of the gland (9) is provided with a mounting hole (91) and a groove (92), and the bolt (7) is fixedly connected with the limiting pin shaft (6) through the mounting hole (91).

2. The stopper for a continuous casting mold vibration device according to claim 1, characterized in that: The vibration-proof fixing assembly comprises an adjusting gasket set (3) and a cushion block (4), the cushion block (4) is U-shaped, the U-shaped cushion block (4) on both sides of the limiting pin shaft (6) is respectively provided with a countersunk bolt hole, the countersunk bolt hole is connected with a countersunk bolt, and the countersunk bolt is fixedly connected with the fixed frame body (2) through the adjusting gasket set (3).

3. The stopper for a continuous casting mold vibration device according to claim 2, characterized in that: The adjusting gasket set (3) comprises a plurality of elastic gaskets.

4. The stopper for a continuous casting mold vibration device according to claim 1, characterized in that: The diameter of the groove (92) is greater than the outer diameter of the limiting pin shaft (6), and the diameter of the mounting hole (91) is less than the outer diameter of the limiting pin shaft (6).

5. The stopper for a continuous casting mold vibration device according to claim 1, characterized in that: A round gasket (8) is arranged between the gland (9) and the vibration frame body (1), the middle of the round gasket (8) is provided with a through hole, the limiting pin shaft (6) passes through the through hole, and the diameter of the round gasket (8) is the same as the outer diameter of the limiting pin shaft (6).

6. The stopper for a continuous casting mold vibration device according to claim 1, characterized in that: The gap between the lower edge of the gland (9) and the upper surface of the vibration frame body (1) is 10±0.1 mm, and the thickness of the U-shaped limiting insertion plate (5) is 10±0.1 mm.

7. A method for limiting the oscillation of a continuous casting mold, using the position limiter according to any one of claims 1 to 6. The method comprises the following steps: S1: confirming that the limiter is in the installation zero position, at this time, the concave opening of the gland (9) is downward, the vibration frame body (1) is pressed by the bolt (7) and is tightened; S2: before starting the vibration device, the position of the gland (9) is adjusted, so that the concave opening of the gland (9) is upward, the round gasket (8) on the limiting pin shaft (6) is pressed by the gland (9), after the gap between the lower edge of the gland (9) and the vibration frame body (1) is adjusted to 10±0.1 mm, the bolt (7) is tightened and locked; S3: the U-shaped limiting insertion plate (5) is pulled out, the vibration device is started, and the vibration range of the vibration frame body (1) is kept at ±10 mm by the limiter through the limiting pin shaft (6).

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