Tundish sizing nozzle quick-change mechanism capable of automatically detecting track and nozzle placement

Abstract

The utility model discloses a tundish sizing nozzle quick-change mechanism capable of automatically detecting track and nozzle placement, which comprises a transverse moving track, a transverse moving trolley, a centering and positioning device, a pushing track, a nozzle pushing trolley, a monitoring device, a bracket and an electric control box, wherein the transverse moving track is arranged at the edge of a crystallizer housing; a transverse moving trolley is arranged on the transverse moving track; centring positioning devices are respectively arranged on steel rails, close to the crystallizer housing, of the transverse moving rail and correspond to each flow of the crystallizer; a pushing rail is arranged at the top of the transverse moving trolley; the pushing track is perpendicular to the transverse moving track. A water gap pushing trolley is arranged on the pushing track; a monitoring device is arranged at the rear end of the top of the water gap pushing trolley; a bracket is arranged at the front end of the upper part of the water gap pushing trolley; the electric control box is arranged at the end head of one end of the transverse moving track; the electrical control box is connected with the transverse moving trolley, the water gap pushing trolley and the monitoring device through cables.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metallurgical equipment technical field, further belongs to steelmaking continuous casting equipment technical field, specifically relates to a kind of middle package sizing nozzle quick-change mechanism of automatic detection track and water gap placement with simple structure, easy installation, reliable operation. BACKGROUND

[0002] In steelmaking continuous casting production, intermediate ladle is used to stabilize molten steel level, reduce static pressure, purify molten steel, adjust composition temperature, split molten steel and store molten steel. The intermediate ladle sizing nozzle is a functional refractory material for controlling the flow of molten steel during continuous casting of small square billets. The pouring speed of the billet is adjusted only by the sizing nozzle. During the entire pouring process, the hole diameter must remain constant to ensure a stable casting speed. Therefore, the sizing nozzle must be safe and reliable during use. In addition to not being blocked, cracked or falling off, the hole diameter of the nozzle requires a small reaming speed. During pouring, the hole diameter of the intermediate ladle sizing nozzle gradually expands due to erosion, wear and other reasons. When the hole diameter exceeds a certain value, a new sizing nozzle must be replaced to ensure the quality of the cast billet. Currently, intermediate ladle sizing nozzle quick-change devices are widely used in continuous casting production, but the following shortcomings exist during use:

[0003] 1. During the replacement of the sizing nozzle, the caster wears protective gloves and manually places the sizing nozzle into the quick-change mechanism of the intermediate ladle, then operates the hydraulic quick-change cylinder to push the sizing nozzle along the track to complete the replacement of the old sizing nozzle. Due to the normal pouring state, the temperature of the quick-change mechanism area is 280-320℃, the temperature of the caster's operating environment area is 50-80℃, and sometimes it is accompanied by high-temperature liquid splashing, so the risk of burns increases when manually placing the sizing nozzle;

[0004] 2. During the replacement of the sizing nozzle, the splashing of molten steel can cause the intermediate ladle quick-change mechanism track to stick to steel. Since the quick-change mechanism track area is in the visual blind area and is not easy to observe, the sticking of cold steel can cause the quick-change mechanism cylinder to not push normally or not push to the correct position, resulting in casting interruption;

[0005] 3. The intermediate ladle quick-change mechanism can deform during use, which cannot be observed by the naked eye. The deformation can cause the joint between the intermediate ladle seat brick nozzle and the sizing nozzle to increase, and the molten steel can easily pass through the joint during the replacement of the sizing nozzle, causing a molten steel leakage accident;

[0006] 4. The frequency of replacing the sizing nozzle can cause the joint between the intermediate ladle seat brick nozzle and the sizing nozzle to be pinched, which can cause the joint to increase or the moving track of the next sizing nozzle to deviate from the correct track. Since the pinched position cannot be directly observed by the naked eye, if pinching occurs, it can cause the molten steel to directly pass through the joint during the next replacement of the sizing nozzle.

[0007] Therefore, developing a simple structure, easy to install, reliable operation of automatic detection track and water port placement of the intermediate ladle sizing nozzle quick change mechanism is the key to solve this problem. The utility model discloses a content

[0008] The utility model discloses a simple structure, easy to install, reliable operation of automatic detection track and water port placement of the intermediate ladle sizing nozzle quick change mechanism.

[0009] The utility model discloses a purpose is realized like this, including horizontal shift track, horizontal shift trolley, centering and positioning device, push track, water port push trolley, monitoring device, bracket, electrical control box, the horizontal shift track set up at the edge of crystallizer cover shell, the horizontal shift track on setting horizontal shift trolley, the horizontal shift track of crystallizer cover shell's steel rail near the centering and positioning device of each flow of crystallizer is set respectively, the top of horizontal shift trolley sets up push track, push track is perpendicular with horizontal shift track, push track sets up water port push trolley, the top rear end of water port push trolley sets up monitoring device, the upper front end of water port push trolley sets up bracket, the electrical control box sets up at the end of one end of horizontal shift track, the electrical control box is connected with horizontal shift trolley, water port push trolley, monitoring device respectively through cable.

[0010] The utility model discloses a simple structure, easy to install, reliable operation of automatic detection track and water port placement of the intermediate ladle sizing nozzle quick change mechanism.

[0011] The replacement steps of the sizing nozzle are as follows:

[0012] 1, place the sizing nozzle in the bracket;

[0013] 2, input the flow number to be replaced on the control panel of the electrical control box, and the horizontal shift trolley runs to the front of the corresponding flow;

[0014] 3, the water port push trolley runs forward, and the monitoring device automatically detects whether there is an abnormal condition in the track during the forward running of the water port push trolley.

[0015] 4. The nozzle pushing trolley pushes the sizing nozzle to the working position to complete the replacement operation.

[0016] The utility model discloses in the production process, when replacing the sizing nozzle, it is safe, quick, convenient, prevents the molten steel leakage and the casting flow casting accident caused by the intermediate ladle sizing nozzle quick replacement mechanism exception, and simultaneously can effectively protect the casting worker, reduces the occurrence of the security hidden danger accident such as scalding.

[0017] The utility model discloses simple structure, convenient installation, reliable operation can automatically detect the track of intermediate ladle sizing nozzle quick replacement mechanism and nozzle placement. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram of the utility model.

[0019] In the drawing: 1 - horizontal moving track, 2 - horizontal moving trolley, 3 - centering positioning device, 4 - pushing track, 5 - nozzle pushing trolley, 6 - monitoring device, 7 - bracket, 8 - electrical control box, 9 - sizing nozzle, 10 - intermediate ladle, 11 - intermediate ladle nozzle slide. DETAILED DESCRIPTION

[0020] The utility model makes further explanation in combination with the drawings, but does not limit the utility model in any way, and any alternation based on the utility model teaching falls into the protection scope of the utility model.

[0021] As Figure 1 The utility model discloses a kind of intermediate ladle sizing nozzle quick replacement mechanism, including horizontal moving track 1, horizontal moving trolley 2, centering positioning device 3, pushing track 4, nozzle pushing trolley 5, monitoring device 6, bracket 7, electrical control box 8, the horizontal moving track 1 is set to crystallizer cover shell edge;The horizontal moving track 1 is set horizontal moving trolley 2 on;The rail of the horizontal moving track 1 close to crystallizer cover shell is respectively set centering positioning device 3 at corresponding crystallizer each flow time;The top of the horizontal moving trolley 2 is set pushing track 4;The pushing track 4 is perpendicular to horizontal moving track 1;The pushing track 4 is set nozzle pushing trolley 5 on;The top rear end of the nozzle pushing trolley 5 is set monitoring device 6;The upper front end of the nozzle pushing trolley 5 is set bracket 7;The electrical control box 8 is set to one end of horizontal moving track 1 at the end;The electrical control box 8 is respectively connected with horizontal moving trolley 2, nozzle pushing trolley 5, monitoring device 6 by cable.

[0022] The length of the horizontal moving track 1 is adapted to the length of continuous casting machine cover shell.

[0023] The pushing track 4 is set trolley stop close to intermediate ladle 10 end.

[0024] The monitoring device 6 has the functions of detecting whether the joint between the seat brick nozzle of the tundish 10 and the sizing nozzle 9 is clamped with steel and whether the gap width is appropriate, observing whether there is cold steel sticking on the quick-change mechanism, and achieving accurate placement of the sizing nozzle 9.

[0025] The monitoring device 6 is connected with the alarm of the electrical control box 8.

[0026] The structure of the bracket 7 is adapted to the outer dimension of the sizing nozzle 9.

[0027] The bracket 7 can place and fix the sizing nozzle 9.

[0028] The working principle and working process of the utility model are as follows:

[0029] The transverse moving trolley 2 can run to the front of the corresponding flow through the transverse moving track 1 and achieve accurate positioning through the centering positioning device 3; the nozzle pushing trolley 5 can run on the pushing track 4 and push the sizing nozzle 9 placed on the bracket 7 into the tundish nozzle slide 11; the monitoring device 6 can detect whether the joint between the seat brick nozzle of the tundish 10 and the sizing nozzle 9 is clamped with steel and whether the gap width is appropriate, observe whether there is cold steel sticking on the quick-change mechanism, and achieve accurate placement of the sizing nozzle 9; the monitoring device 6 is connected with the alarm of the electrical control box 8, and the alarm is sent and the replacement operation is stopped when an abnormality is detected.

[0030] The replacement steps of the sizing nozzle 9 are as follows:

[0031] 1. Place the sizing nozzle 9 in the bracket 7;

[0032] 2. Input the flow number to be replaced on the control panel of the electrical control box 8, and the transverse moving trolley 2 runs to the front of the corresponding flow;

[0033] 3. The nozzle pushing trolley 5 runs forward, and the monitoring device 6 automatically detects whether there is an abnormality in the track during the forward running of the nozzle pushing trolley 5; if the abnormality such as clamping steel, sticking steel and abnormal joint width is detected, the alarm rings, the replacement operation is stopped, and the operator performs comprehensive inspection or cleaning;

[0034] 4. The nozzle pushing trolley 5 pushes the sizing nozzle 9 to the working position to complete the replacement operation.

Claims

1. A quick-change mechanism for tundish sizing nozzles that automatically detects track and nozzle placement, comprising a transverse track (1), a transverse trolley (2), a centering and positioning device (3), a push track (4), a nozzle push trolley (5), a monitoring device (6), a bracket (7), and an electrical control box (8), characterized in that: The horizontal moving track (1) is arranged at the edge of the crystallizer cover; the horizontal moving track (1) is provided with a horizontal moving trolley (2); the horizontal moving track (1) is provided with a centering positioning device (3) at the corresponding position of each flow of the crystallizer; the top of the horizontal moving trolley (2) is provided with a pushing track (4); the pushing track (4) is perpendicular to the horizontal moving track (1); the pushing track (4) is provided with a nozzle pushing trolley (5); the top rear end of the nozzle pushing trolley (5) is provided with a monitoring device (6); the upper front end of the nozzle pushing trolley (5) is provided with a bracket (7); the electrical control box (8) is arranged at the end of the horizontal moving track (1); the electrical control box (8) is connected with the horizontal moving trolley (2), the nozzle pushing trolley (5) and the monitoring device (6) through cables.

2. The tundish nozzle quick-change mechanism for automatically detecting the placement of a track and a nozzle according to claim 1, characterized in that: The length of the horizontal moving track (1) is adapted to the length of the continuous casting machine cover.

3. The tundish nozzle quick-change mechanism for automatically detecting the placement of a track and a nozzle according to claim 1, characterized in that: The pushing track (4) is provided with a trolley stop near the tundish (10).

4. The tundish nozzle quick-change mechanism for automatically detecting the placement of a track and a nozzle according to claim 1, characterized in that: The monitoring device (6) has the functions of detecting whether the joint of the seat brick nozzle and the sizing nozzle (9) of the tundish (10) is clamped with steel, whether the gap width is appropriate, observing whether there is cold steel sticking on the quick-change mechanism, and realizing accurate placement of the sizing nozzle (9).

5. The tundish nozzle quick-change mechanism for automatically detecting the placement of a track and a nozzle according to claim 1, characterized in that: The monitoring device (6) is connected with the alarm of the electrical control box (8).

6. The tundish nozzle quick-change mechanism for automatically detecting the placement of a track and a nozzle according to claim 1, characterized in that: The structure of the bracket (7) is adapted to the outer dimensions of the sizing nozzle (9).

7. The tundish nozzle quick-change mechanism for automatically detecting the placement of a track and a nozzle according to claim 1, characterized in that: The bracket (7) can place and fix the sizing nozzle (9).

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