Pre-centering device and tundish car

Abstract

The utility model discloses a pre-centering device and a tundish vehicle, and solves the problem that the operation efficiency is low in the continuous production and continuous casting tundish quick change process of a continuous casting machine due to the fact that a submersed nozzle on a tundish and an upper opening of a crystallizer are not centered in the prior art. Wherein the pre-centering device comprises a limiting assembly, the limiting assembly comprises two opposite limiting plates, the limiting plates are arranged on a cross beam of a middle car set frame, and the two sides of an upper opening of the crystallizer and the two limiting plates are located in the same vertical plane. The limiting assembly in the pre-centering device can simulate the position of an upper opening of a crystallizer, when a tundish car set is located at a baking position, a worker can adjust the position of a tundish by referring to the limiting assembly, the purpose of centering a submersed nozzle in advance is achieved, it is guaranteed that the submersed nozzle and the upper opening of the crystallizer are located in the same vertical plane, and the accuracy is improved. When the tundish car set is moved to a steel casting position, the tundish car set can be directly inserted into an upper opening of a crystallizer for steel casting operation, so that the efficiency of continuous tundish quick-change production operation without continuous casting of a continuous casting machine is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of casting machine steel pouring, and particularly relates to a pre-centering device and a tundish car. BACKGROUND

[0002] Continuous casting machine opening pouring is an important part of continuous casting machine steel pouring operation, and plays a key role in realizing normal continuous casting machine steel pouring operation.

[0003] In the prior art, in order to ensure the normal operation of opening pouring, the tundish car needs to be opened to the steel pouring position to determine the relative position of the submerged entry nozzle and the upper mouth of the crystallizer, and the centering (centering of the submerged entry nozzle and the upper mouth of the crystallizer) operation is performed at the steel pouring position; and in the continuous production and non-stop pouring of the tundish in the continuous casting machine, the above-mentioned centering method will reduce the production efficiency, and the speed of steel pouring will be affected; at the same time, the submerged entry nozzle is also prone to breakage due to misalignment of the submerged entry nozzle and the upper mouth of the crystallizer. Therefore, it is of great significance to study the pre-centering device of the tundish submerged entry nozzle to improve the production efficiency of the casting machine. SUMMARY

[0004] To solve the above technical problems, the application provides a pre-centering device to solve the misalignment of the submerged entry nozzle on the tundish and the upper mouth of the crystallizer in the prior art, which leads to low operation efficiency in the continuous production and non-stop pouring of the tundish in the continuous casting machine.

[0005] The technical scheme adopted to achieve the purpose of the application is as follows:

[0006] A pre-centering device, comprising:

[0007] A limiting component for determining the position of the upper mouth of the crystallizer, the limiting component comprising two oppositely arranged limiting plates, both of which are arranged on the cross beam of the tundish car group frame, and the two sides of the upper mouth of the crystallizer are in the same vertical plane with the opposite sides of the two limiting plates; wherein,

[0008] When the submerged entry nozzle on the tundish moves between the transverse projection planes of the two limiting plates, it indicates that the submerged entry nozzle and the upper mouth of the crystallizer are in the same vertical plane, and when the tundish car group moves to the steel pouring position, the tundish can be directly poured, and the submerged entry nozzle can be inserted into the upper mouth of the crystallizer.

[0009] In order to better achieve the application, the limiting component further comprises a mounting portion in the above structure.

[0010] Both of the two limiting plates are arranged on the mounting portion, and the mounting portion is fixedly mounted on the cross beam.

[0011] In order to better realize the present application, further optimization is made in the above structure, the mounting portion is in a long strip plate structure, two limiting plates are arranged at two ends of the mounting portion to form a "N" shape structure; in the mounting state, the length direction of the mounting portion is parallel to the length direction of the cross beam.

[0012] In order to better realize the present application, further optimization is made in the above structure, a through hole is arranged on the mounting portion, a threaded hole is arranged on the cross beam, and a bolt is connected through the through hole and the threaded hole to realize the fixation of the mounting portion.

[0013] In order to better realize the present application, further optimization is made in the above structure, the through hole is a waist-shaped hole, and the length direction of the through hole is parallel to the length direction of the mounting portion.

[0014] In order to better realize the present application, further optimization is made in the above structure, the mounting portion is connected and fixed with the cross beam by welding.

[0015] In order to better realize the present application, further optimization is made in the above structure, the one side of the limiting plate facing the cross beam and the one side of the limiting plate away from the cross beam are both provided with a reflective sticker.

[0016] In order to better realize the present application, further optimization is made in the above structure, the frame of the tundish vehicle group is in a rectangular frame structure, and the number of the limiting assemblies is two groups, and two groups of the limiting assemblies are arranged on two groups of cross beams of the frame of the tundish vehicle group.

[0017] On the other hand, the present application also provides a tundish vehicle, which comprises a tundish vehicle group, a tundish and the above-mentioned pre-centering device.

[0018] The tundish vehicle group can reciprocate between a baking position and a steel pouring position, and the upper opening of the crystallizer is located at the steel pouring position.

[0019] The tundish is arranged on the tundish vehicle group, and the tundish can move along the length direction of the cross beam of the frame of the tundish vehicle group and the direction perpendicular to the horizontal plane.

[0020] Both of the limiting plates in the pre-centering device are arranged on the cross beam.

[0021] In order to better realize the present application, further optimization is made in the above structure, the number of the tundish vehicle groups is two groups, two groups of the tundish vehicle groups are arranged on opposite sides of the steel pouring position, and the two groups of the tundish vehicle groups can alternately move to the steel pouring position.

[0022] As can be seen from the above technical solution, the limiting component in the pre-alignment device provided in this application can simulate the position of the top opening of the crystallizer. When the tundish car group is in the baking position, the operator can refer to the limiting component to adjust the position of the tundish on the tundish car group so that the immersion nozzle of the tundish is located between the transverse projection planes of the two limiting plates, thus completing the pre-alignment operation of the immersion nozzle and ensuring that the immersion nozzle and the top opening of the crystallizer are in the same vertical plane. When the tundish car group moves to the steel pouring position, it can control the tundish to descend so that the immersion nozzle can be directly inserted into the top opening of the crystallizer for steel pouring, thereby improving the steel production efficiency and avoiding the occurrence of immersion nozzle breakage. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a pre-alignment device according to this application;

[0024] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0025] Figure 3 This is a structural schematic diagram of a medium-sized casting car according to this application (the medium-sized casting car group is either waiting to enter the steel pouring position or moving towards the steel pouring position);

[0026] Figure 4 This is a structural schematic diagram of a medium-duty car according to this application (when the medium-duty car group is in the steel pouring position);

[0027] Figure 5 This is a schematic diagram of the frame structure of a mid-car group in a mid-car group according to this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1-Limiting component, 11-Limiting plate, 12-Mounting part, 121-Perforation, 13-Reflective sticker;

[0030] 2-Medium-sized train set, 21-Crossbeam;

[0031] 3-Intermediate liner, 31-Submersible nozzle;

[0032] 4-Crystallizer top opening. Detailed Implementation

[0033] To enable those skilled in the art to better understand this application, the technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] In the embodiments of this application, such as Figures 1 to 5 As shown, the pre-alignment device includes a limiting component 1; wherein,

[0035] The limiting assembly 1 comprises two opposite limiting plates 11, both of which are arranged on the cross beam 21 of the tundish car group 2, as shown in Figure 3 The two sides of the upper opening 4 of the crystallizer are in the same vertical plane with the opposite sides of the two limiting plates 11, and the positions of the upper opening 4 of the crystallizer are simulated by the two limiting plates 11, so as to facilitate the pre-centering operation of the workers.

[0036] When the tundish car group 2 is at the baking position, the workers can adjust the position of the tundish 3 so that the submerged entry nozzle 31 on the tundish 3 is moved between the transverse projection planes of the two limiting plates 11, as shown in Figure 3 , to complete the pre-centering operation of the submerged entry nozzle 31.

[0037] When the tundish car group 2 is opened to the casting position, the submerged entry nozzle 31 on the tundish 3 is just above the upper opening 4 of the crystallizer, at which time the workers can directly operate the tundish 3 to drop the tundish 3, so that the submerged entry nozzle 31 is inserted into the upper opening 4 of the crystallizer to perform the casting operation, as shown in Figure 4 .

[0038] Figure 3 and Figure 4 The two dashed lines on the upper opening 4 of the crystallizer are the extensions of the width of the upper opening 4 of the crystallizer (not actually existing);

[0039] Through Figure 3 and Figure 4 , it can be seen that the two sides of the upper opening 4 of the crystallizer are in the same vertical plane with the opposite sides of the two limiting plates 11, and the positions of the upper opening 4 of the crystallizer can be determined by the two limiting plates 11. The pre-centering device can move with the tundish car group 2 and the relative position does not change during the movement of the tundish car group 2. The position of the upper opening 4 of the crystallizer can be accurately determined by the pre-centering device, and the pre-centering operation can be performed during the movement of the tundish car group 2 to the casting position, without the need to perform the centering operation when the tundish car group 2 is at the casting position, so as to save time and effectively improve the production efficiency of the steel.

[0040] It is worth noting that the tundish car group 2 can only move linearly between the baking position and the casting position. After the pre-centering of the submerged entry nozzle 31 is completed, the position of the submerged entry nozzle 31 is always in the same vertical plane with the upper opening 4 of the crystallizer during the movement of the tundish car group 2.

[0041] In some embodiments, the limiting assembly 1 described above further comprises a mounting portion 12; wherein,

[0042] Two limiting plates 11 are arranged on the mounting part 12, and the mounting part 12 is fixedly mounted on the cross beam 21. Preferably, the mounting part 12 is in a long strip-shaped plate structure, and the two limiting plates 11 are arranged at the two ends of the mounting part 12 to form a “N” shaped structure, as shown in Figure 1 ; in the mounting state, the length direction of the mounting part 12 is parallel to the length direction of the cross beam 21, and the opening of the limiting assembly 1 faces upward, as shown in Figure 5 .

[0043] In some embodiments, the mounting part 12 is provided with a through hole 121, and the cross beam 21 is provided with a threaded hole. The bolt is connected through the through hole and the threaded hole to fix the mounting part 12, so that the installation and disassembly of the pre-centering device are more convenient. Preferably, the through hole 121 is a waist-shaped hole, as shown in Figure 1 , and the length direction of the through hole 121 is parallel to the length direction of the mounting part 12. When the pre-centering device is installed, the worker can move the pre-centering device along the length direction of the cross beam 21 to ensure that the opposite sides of the two limiting plates 11 are respectively in the same vertical plane with the two sides of the upper opening 4 of the crystallizer, so as to ensure the centering accuracy.

[0044] Of course, the mounting part 12 can also be connected and fixed with the cross beam 21 by welding, so as to avoid the relative displacement between the pre-centering device and the cross beam 21 in the tundish car group 2, which causes the centering accuracy to be reduced.

[0045] In some embodiments, one side of the limiting plate 11 facing the cross beam 21 and the side away from the cross beam 21 are both provided with a reflective sticker 13, as shown in Figure 1 and Figure 2 . When the pre-centering is performed in a relatively dark environment, the worker can use the light emitting device to irradiate the limiting assembly 1, and the reflective sticker 13 can reflect the light, so that the worker can quickly determine the position of the limiting plate 11 and quickly complete the pre-centering work.

[0046] It is worth noting that when the tundish car group 2 is at the baking position, the submerged nozzle 31 will also be heated and reddened by the molten steel in the tundish 3. This part of light can also be reflected by the reflective sticker 13, so that the worker can quickly determine the position of the limiting plate 11.

[0047] In some embodiments, the frame of the tundish car group 2 is in a rectangular frame structure, and the number of limiting assemblies 1 is two. The two limiting assemblies 1 are arranged on the two cross beams 21 of the frame of the tundish car group 2, as shown in Figure 5 ;

[0048] In the pre-centering process, the worker can stand on the moving track of the tundish car group 2 and be located on the extension line of the connecting line of the two sets of limiting components 1, observe the position of the submerged nozzle 31 at this point, and determine the position of the submerged nozzle 31 when the submerged nozzle 31 moves to the transverse projection plane between the two limiting plates 11 in the limiting component 1, complete the pre-centering operation.

[0049] Based on the above pre-centering device, the embodiment provides a tundish car, which comprises a tundish car group 2, a tundish 3 and the above pre-centering device; wherein,

[0050] The tundish car group 2 can reciprocate between the baking position and the steel pouring position, and the mold upper opening 4 is located at the steel pouring position.

[0051] The tundish 3 is arranged on the tundish car group 2, and the tundish 3 can act along the length direction of the crossbeam 21 of the tundish car group 2 (centering of the submerged nozzle 31) and the direction perpendicular to the horizontal plane (tundish lifting and tundish lowering).

[0052] The two limiting plates 11 in the pre-centering device are arranged on the crossbeam 21 of the frame of the tundish car group 2.

[0053] In some embodiments, the above-mentioned tundish car group 2 has two sets, and the two sets of tundish car groups 2 are arranged on the opposite sides of the steel pouring position respectively, and the two sets of tundish car groups 2 can alternately move to the steel pouring position, so as to further improve the production efficiency of the steel.

[0054] Through the above embodiment, the application has the following beneficial effects or advantages:

[0055] 1) The limiting component 1 in the pre-centering device can simulate the position of the mold upper opening 4, and when the tundish car group 2 is at the baking position, the worker can adjust the position of the tundish 3 on the tundish car group 2 by referring to the limiting component 1, so that the submerged nozzle 31 of the tundish 3 is located between the transverse projection planes of the two limiting plates 11 to complete the pre-centering operation of the submerged nozzle 31, ensure that the submerged nozzle 31 and the mold upper opening 4 are in the same vertical plane, and when the tundish car group 2 moves to the steel pouring position, the tundish 3 can be controlled to descend, so that the submerged nozzle 31 directly inserts into the mold upper opening 4 to perform the steel pouring operation, thereby improving the production efficiency of the steel.

[0056] 2) The two surfaces of the limiting plate 11 in the pre-centering device are provided with reflective stickers 13, and the worker can quickly and accurately determine the position of the limiting plate 11 through the light reflected by the reflective stickers 13, and complete the pre-centering operation of the submerged nozzle 31 according to the position of the limiting plate 11, thereby effectively improving the pre-centering efficiency.

[0057] 3) The tundish car includes two groups of tundish car groups 2, which can alternately move to the casting position. When waiting to enter the casting position or moving to the casting position, the staff can adjust the position of the tundish 3, so that the submerged entry nozzle 31 on the tundish 3 is located between the two limiting plates 11, to complete the pre-centering operation of the submerged entry nozzle 31, thereby effectively improving the production efficiency of the steel.

[0058] While the preferred embodiments of the application have been described, modifications and alterations thereto will occur to those skilled in the art upon reading the preceding description. It is intended to include all such modifications and alterations insofar as they come within the scope of the application. Accordingly, the application is not to be limited as by the recited preferred embodiments, but is only limited by the scope of the appended claims.

[0059] Obviously, various modifications and changes are possible in the present application without departing from the scope and spirit of the application. Accordingly, the application intends to include all such modifications and changes insofar as they come within the scope of the claims of the application and their equivalents.

Claims

1. A pre-alignment device, characterized by The application relates to a limiting assembly (1) for determining the position of a crystallizer upper opening (4), the limiting assembly (1) comprising two oppositely arranged limiting plates (11), both of which are arranged on the cross beams (21) of a tundish car group (2) frame, and the two sides of the crystallizer upper opening (4) are respectively in the same vertical plane as the opposite sides of the two limiting plates (11); wherein, when the submerged nozzle (31) on the tundish (3) moves to between the transverse projection planes of the two limiting plates (11), it indicates that the submerged nozzle (31) is in the same vertical plane as the crystallizer upper opening (4), and when the tundish car group (2) moves to a steel pouring position, a tundish dropping operation can be directly performed, so that the submerged nozzle (31) is inserted into the crystallizer upper opening (4). The limiting assembly (1) further comprises a mounting portion (12).

2. The pre-alignment device of claim 1, wherein, Both of the limiting plates (11) are arranged on the mounting portion (12), and the mounting portion (12) is fixedly mounted on the cross beam (21). The mounting portion (12) is a long strip-shaped plate structure, and both of the limiting plates (11) are arranged at the two ends of the mounting portion (12) to form a "N" shaped structure; in the mounting state, the length direction of the mounting portion (12) is parallel to the length direction of the cross beam (21).

3. The pre-alignment device of claim 2, wherein, The mounting portion (12) is provided with a through hole (121), and the cross beam (21) is provided with a threaded hole; a bolt is connected with the threaded hole through the through hole (121) to fix the mounting portion (12).

4. The pre-alignment device of claim 3, wherein, The through hole (121) is a waist-shaped hole, and the length direction of the through hole (121) is parallel to the length direction of the mounting portion (12).

5. The pre-alignment device of claim 4, wherein, The mounting portion (12) is connected and fixed with the cross beam (21) by welding.

6. The pre-alignment device of claim 3, wherein, The one side of the limiting plate (11) facing the cross beam (21) and the one side of the limiting plate (11) away from the cross beam (21) are both provided with a reflective sticker (13).

7. The pre-alignment device according to any one of claims 1 to 6, characterized in that The frame of the tundish car group (2) is a rectangular frame structure, and the number of the limiting assemblies (1) is two groups, and the two groups of limiting assemblies (1) are arranged on the two groups of cross beams (21) of the tundish car group (2) frame.

8. The pre-alignment device of claim 1, wherein, The application further relates to a tundish car group (2), a tundish (3) and the pre-centering device according to any one of claims 1 to 8.

9. A tundish car, characterized by The tundish car group (2) can reciprocate between a baking position and a steel pouring position, and the crystallizer upper opening (4) is located at the steel pouring position. The tundish (3) is arranged on the tundish car group (2), and the tundish (3) can move along the length direction of the cross beam (21) of the tundish car group (2) frame and the direction perpendicular to the horizontal plane. Both of the limiting plates (11) in the pre-centering device are arranged on the cross beam (21). The number of the tundish car groups (2) is two groups, and the two groups of tundish car groups (2) are arranged on the opposite sides of the steel pouring position, and the two groups of tundish car groups (2) can alternately move to the steel pouring position.

10. The package car according to claim 9, wherein ​

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