Online arc-shaped fan-shaped section calibration device on thin slab continuous casting machine

Abstract

The utility model relates to an on-line arc fan-shaped section calibration device on a thin slab continuous casting machine, and belongs to the technical field of continuous casting machines. Comprising a first calibration block and a second calibration block, one side of the first calibration block is hinged to a dummy bar, the other side of the first calibration block is hinged to the second calibration block, the dummy bar is driven, and the first calibration block and the second calibration block are driven to be conveyed to an arc-shaped fan-shaped section to be calibrated. A first connecting block is arranged in the center of one side of the first calibration block, and one side of the first connecting block is hinged to the dummy bar through a first connecting pin shaft; second connecting blocks are symmetrically arranged at the two ends of the other side of the first calibration block. Second storage grooves are symmetrically formed in the two ends of one side of the second calibration block, the second connecting blocks are inserted into the corresponding second storage grooves, and the second connecting pin shafts penetrate through the second connecting blocks and the second storage grooves respectively. The device is simple in structure, convenient to maintain and install and long in service life, calibration accuracy is improved, and quality fluctuation caused by inaccurate online calibration of the fan-shaped section is reduced.

Description

Technical Field

[0001] The utility model relates to an online arc-shaped sector-shaped segment calibration device on a thin slab continuous casting machine, belonging to the technical field of continuous casting machines. Background Art

[0002] With the continuous updating and optimization of continuous casting technology, the variety and quality of steel products have attracted more and more attention from users. Improving the quality of steel products and increasing the proportion of high value-added products are the goals pursued by every steel producer. Soft reduction technology is an important means to reduce the center segregation of the ingot and improve the quality of the ingot. It is an important guarantee for the production of high value-added steel products. In order to complete the soft reduction function of the online fan-shaped segment, the correct fan-shaped segment roll gap calibration method is the basis. The correct fan-shaped segment roll gap calibration method can not only reduce the deviation during roll gap adjustment and improve control accuracy, but also save calibration time and avoid unnecessary operations on site, thereby improving production efficiency. There are two main forms of calibration methods currently used in production:

[0003] 1. Offline calibration, which is done on the offline alignment maintenance table of the arc segment. Since it is done offline, the calibration is convenient. After calibration, it is hoisted online. However, the actual online state of the fan segment is different from the state on the alignment maintenance table. Even if the offline calibration is very accurate, there is a large error in actual online use. The offline calibration currently used is only a preliminary rough calibration to reduce the workload of subsequent online calibration.

[0004] 2. Online calibration. There are two types of online calibration: manual roll gap measuring instrument and automatic roll gap measuring instrument. The manual roll gap measuring instrument is held by the calibration personnel to measure the opening values ​​of the entrance and exit of the fan-shaped segment when it is online. This is related to the measurement method of the calibration personnel and is greatly affected by the measurement personnel. It cannot effectively eliminate the gap between the roller and the inner and outer arc frames, and the error is large. The automatic roll gap measuring instrument is expensive, complex, inconvenient to use, time-consuming, and has high maintenance costs. It cannot completely eliminate the gap between the fan-shaped segments during measurement and has low accuracy. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide an online arc-shaped sector calibration device for a thin slab continuous casting machine in response to the above-mentioned prior art. The device has simple manufacture, convenient installation and maintenance, high safety performance, long service life, improved calibration accuracy, and reduced fluctuations in the specifications and quality of the produced castings caused by inaccurate online calibration of the sector segments.

[0006] The technical solution adopted by the utility model to solve the above-mentioned problem is: an online arc sector segment calibration device on a thin slab continuous casting machine, comprising a first calibration block and a second calibration block, one side of the first calibration block is hinged to the ingot guide rod, and the other side of the first calibration block is hinged to the second calibration block, and the ingot feeding device drives the ingot guide rod to drive the first calibration block and the second calibration block to be sent to the arc sector segment to be calibrated, and then the calibration is performed.

[0007] A first connecting block is arranged at the center of one side of the first calibration block, and one side of the first connecting block is hinged to the dummy rod through a first connecting pin; and second connecting blocks are symmetrically arranged at both ends of the other side of the first calibration block.

[0008] The second calibration block has symmetrically provided inwardly recessed second storage grooves at both ends of one side, the second connecting block is inserted into the corresponding second storage groove, and the second connecting pin passes through the second connecting block and the second storage groove respectively, so that the second calibration block is hinged to the first calibration block.

[0009] The first calibration block and the second calibration block are arc-shaped structural parts respectively.

[0010] A gap is left between the opposite surfaces of the first calibration block and the second calibration block.

[0011] Compared with the prior art, the utility model has the advantages of: an online arc-shaped sector calibration device on a thin slab continuous casting machine, which is simple to manufacture, convenient to install and maintain, has high safety performance, long service life, improves calibration accuracy, and reduces fluctuations in the specifications and quality of the produced castings caused by inaccurate online calibration of the sector segments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the connection between an online arc-shaped sector-shaped segment calibration device and a dummy bar on a thin slab continuous casting machine according to an embodiment of the utility model;

[0013] Figure 2 This is a schematic diagram of an online calibration state of an online arc-shaped sector calibration device on a thin slab continuous casting machine according to an embodiment of the utility model;

[0014] Figure 3 It is a schematic diagram of an online arc-shaped sector calibration device on a thin slab continuous casting machine according to an embodiment of the utility model;

[0015] Figure 4 for Figure 3 Schematic diagram of the first calibration block in FIG.

[0016] Figure 5 for Figure 3 Schematic diagram of the second calibration block;

[0017] In the figure, 1 is the first marking block, 1.1 is the first connecting block, 1.2 is the second connecting block, 2 is the second marking block, 2.1 is the second storage groove, 3 is the second connecting pin, 4 is the first connecting pin, and 5 is the dummy rod. DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] like Figure 1 , 3 As shown in Figures 4 and 5, an online arc-shaped sector calibration device on a thin slab continuous casting machine in this embodiment includes an arc-shaped first calibration block 1 and an arc-shaped second calibration block 2. Three first connecting blocks 1.1 are arranged in the center of one side of the first calibration block 1. The three first connecting blocks 1.1 are arranged in parallel along the width direction of the first calibration block 1. The first connecting blocks 1.1 are respectively provided with first connecting holes, and the first connecting pins 4 are penetrated through the first connecting holes and the ingot guide rod 5, so that the first connecting block 1 is hinged with the ingot guide rod 5. Second connecting blocks 1.2 are symmetrically arranged at both ends of the other side of the first calibration block 1, and second connecting holes are respectively provided on the second connecting blocks 1.2. Second placement grooves 2.1 that are recessed inwardly are symmetrically provided at both ends of one side of the second calibration block 1. The second connecting block 1.2 is inserted into the corresponding second placement groove 2.1, and the second connecting pins 3 are respectively penetrated through the second connection holes and pass through the second placement groove 2.1, so that the second calibration block 2 and the first calibration block 1 are hinged. The dummy rod 5 is driven by the dummy device to drive the first calibration block 1 and the second calibration block 2 to the corresponding arc-shaped sector to be calibrated for calibration.

[0020] like Figure 2 As shown, the first calibration block 1 and the second calibration block 2 are connected by a second connecting pin 3, and a gap is left between the opposite surfaces of the first calibration block and the second calibration block. When the arc sector segment is clamped, it is ensured that the first calibration block, the second calibration block and the inner and outer arcs of the arc sector segment are in close contact with each other.

[0021] The first calibration block and the second calibration block are both set according to the inner and outer arc radii of the reference roller array of the continuous casting machine. The first calibration block and the second calibration block are hinged by the second connecting pin, so that the second calibration block and the first calibration block can rotate relative to each other, and the reference arc can rotate inward or outward, reducing the collision with the roller of the fan segment during the conveying process; after rotating to the right position, the mechanical stopper limits the angle of rotation, and the other end of the first calibration block is quickly connected to the ingot rod through the first connecting pin. Before calibration, the first calibration block and the second calibration block are sent to the corresponding arc fan segment to be calibrated through the ingot feeding device, and the four clamping cylinders press the first calibration block and the second calibration block according to the hot billet pressure to calibrate this segment, and the value of each displacement sensor at this time is used as the reference zero position, and then according to the fan segment opening value of the actual casting billet specification, the inlet opening and outlet opening of the fan segment are adjusted through the displacement sensors on the four clamping cylinders. The present invention has a simple structure, is easy to maintain and install, has a long service life, and has high precision, and can effectively ensure that the opening value of the arc-shaped sector segment after online adjustment is consistent with the opening value during actual casting production.

[0022] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. An online arc-shaped sector calibration device on a thin slab continuous casting machine, characterized in that: It comprises a first calibration block and a second calibration block, one side of the first calibration block is hinged to the dummy rod, and the other side of the first calibration block is hinged to the second calibration block, and the dummy rod is driven by the dummy device to drive the first calibration block and the second calibration block to the arc-shaped sector to be calibrated, so as to perform calibration; A first connecting block is arranged at the center of one side of the first calibration block, and one side of the first connecting block is hinged to the dummy rod through a first connecting pin; second connecting blocks are symmetrically arranged at both ends of the other side of the first calibration block; The second calibration block has symmetrically provided inwardly recessed second storage grooves at both ends of one side, the second connecting block is inserted into the corresponding second storage groove, and the second connecting pin passes through the second connecting block and the second storage groove respectively, so that the second calibration block is hinged to the first calibration block; The first calibration block and the second calibration block are arc-shaped structural members respectively; A gap is left between the opposite surfaces of the first calibration block and the second calibration block.

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