Derailing prevention device for fire door of converter

Abstract

The utility model discloses an anti-derailing device for a converter fire door, which belongs to the field of converter equipment and comprises an upper main wheel arranged on the top surface of the converter fire door and a lower main wheel arranged on the bottom surface of the converter fire door, the upper main wheel is in rolling connection with an upper track of the fire door, and the lower main wheel is in rolling connection with a lower track of the fire door. The converter fire door is connected between the fire door upper track and the fire door lower track in a sliding manner through the upper main wheel and the lower main wheel; comprising an auxiliary wheel assembly fixedly connected to one side of the lower portion of the converter fire door, and the auxiliary wheel assembly comprises a connecting part and an auxiliary wheel arranged on the lower portion of the connecting part; the auxiliary wheels are in rolling connection with an auxiliary rail, and the auxiliary rail is parallel to the fire door lower rail; by adding the auxiliary wheel assembly, optimizing the supporting structure, arranging the cleaning part, improving the design of the connecting part and the like, the stability and the safety performance of the fireproof door are effectively improved, the derailment risk is reduced, and a guarantee is provided for safe and smooth steel-making production.

Description

Technical Field

[0001] The utility model belongs to the technical field of converter equipment, and in particular relates to a converter fire-blocking door anti-derailment device. Background Art

[0002] During the converter smelting process, the fire-blocking door is one of the important protective equipment for converter safety production. To ensure the safety of the smelting process, the converter fire-blocking door must be closed during the blowing period and only opened when adding scrap steel or adding iron. The fire-blocking door currently used is a single-track operation. In order to facilitate the opening and closing operation of the converter fire-blocking door, an upper main wheel is provided on the top surface of the converter fire-blocking door and a lower main wheel is provided on the bottom surface of the converter fire-blocking door. The upper main wheel is rollingly connected to the upper track of the fire-blocking door, and the lower main wheel is rollingly connected to the lower track of the fire-blocking door. The converter fire-blocking door is slidably connected between the upper track of the fire-blocking door and the lower track of the fire-blocking door through the upper main wheel and the lower main wheel. Since the upper track of the fire-blocking door and the lower track of the fire-blocking door are both set as single tracks, when the lower track of the fire-blocking door is accumulated with debris such as splashes during the converter blowing process or smoke hoods, skirts, and slag accumulation at the furnace mouth, the accumulated debris can easily cause the lower main wheel of the fire-blocking door to detach from the lower track of the fire-blocking door, causing the fire-blocking door to fall and other abnormalities. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a converter fire-blocking door anti-derailment device.

[0004] The utility model is implemented as follows: a converter fire-blocking door anti-derailment device comprises an upper main wheel arranged on the top surface of the converter fire-blocking door and a lower main wheel arranged on the bottom surface of the converter fire-blocking door, the upper main wheel is rollingly connected to the upper track of the fire-blocking door, the lower main wheel is rollingly connected to the lower track of the fire-blocking door, the converter fire-blocking door is slidingly connected between the upper track of the fire-blocking door and the lower track of the fire-blocking door through the upper main wheel and the lower main wheel; it also comprises an auxiliary wheel assembly fixedly connected to one side of the lower part of the converter fire-blocking door, the auxiliary wheel assembly comprises a connecting part and an auxiliary wheel arranged at the lower part of the connecting part; the auxiliary wheel is rollingly connected to the auxiliary track, and the auxiliary track is arranged parallel to the lower track of the fire-blocking door.

[0005] Furthermore, the auxiliary wheel assembly is arranged in the middle of the side width of the converter fire stop door to provide stable support for the converter fire stop door.

[0006] Alternatively, the number of the lower main wheels is two, which are symmetrically arranged along the center of the converter fire-blocking door; the two lower main wheels and the auxiliary wheel assembly form a stable triangular support structure.

[0007] Furthermore, a cleaning portion is provided on the bottom surface of the converter fire-blocking door, and the cleaning portion is adjacently arranged on both sides of the traveling direction of the lower main wheel to clear debris on the track under the fire-blocking door.

[0008] Furthermore, the cleaning portion is configured as a cleaning plate, the width of the cleaning plate on one side is 10-20 mm greater than the width of the track under the fire stop door, and the bottom surface is 3-5 mm away from the top surface of the track under the fire stop door.

[0009] Furthermore, the cleaning plate is arranged to be inclined 5°-10° toward the outer side of the lower main wheel along the direction of the lower track of the vertical fire-blocking door, so as to facilitate the cleaning of debris by the cleaning plate.

[0010] Furthermore, the connecting portion is a shell structure with an opening at the bottom, a support shaft is fixedly connected inside the shell structure, a bearing is sleeved on the support shaft, and the auxiliary wheel is sleeved on the bearing, so that the auxiliary wheel can roll relative to the support shaft.

[0011] The utility model has the following advantages and technical effects:

[0012] First, the stability of the converter fire-blocking door is significantly improved by adding an auxiliary wheel assembly. The design of the auxiliary wheel assembly provides the fire-blocking door with an additional support point during the sliding process, thereby effectively reducing the risk of derailment due to uneven tracks or vibrations. In particular, the auxiliary wheel assembly is arranged in the middle of the width of the side of the converter fire-blocking door, which can provide more uniform support force and make the fire-blocking door more stable during operation.

[0013] Secondly, by rationally arranging the lower main wheel and auxiliary wheel components, a stable triangular support structure is formed. This structure not only enhances the overall stability of the fire door, but also can resist impact forces from different directions to a certain extent, further improving the safety performance of the fire door.

[0014] In addition, the device is also equipped with a cleaning unit that can effectively remove debris on the track under the fire door. This not only ensures the smooth operation of the fire door, but also extends the service life of the track. The design of the cleaning unit takes into account the fit with the track and the cleaning effect, making the cleaning process both efficient and thorough.

[0015] Finally, the design of the connection part also reflects the ingenuity of the device. The support shaft is fixed by a shell structure with an opening at the bottom, and bearings and auxiliary wheels are sleeved on the support shaft, so that the auxiliary wheels can roll freely relative to the support shaft. This design not only ensures the stability of the auxiliary wheels, but also makes their replacement and maintenance more convenient.

[0016] To sum up, the converter fire stop door anti-derailment device of the utility model effectively improves the stability and safety performance of the fire stop door and reduces the risk of derailment by adding an auxiliary wheel assembly, optimizing the supporting structure, setting a cleaning part and improving the design of the connecting part, thereby providing a strong guarantee for the safety and smooth progress of steelmaking production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a structural schematic diagram provided by an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the auxiliary wheel assembly provided by an embodiment of the utility model.

[0019] In the figure: 1. converter fire-blocking door; 2. auxiliary wheel assembly; 3. lower track of fire-blocking door; 4. auxiliary track; 5. cleaning part; 6. connecting part; 7. auxiliary wheel; 8. lower main wheel; 9. supporting shaft; 10. upper track of fire-blocking door; 11. upper main wheel. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0021] The converter fire-blocking door is a device located at the mouth of the steelmaking converter, mainly used to block the high temperature and flames generated by the converter. During the steelmaking process, the converter fire-blocking door effectively isolates the high-temperature area, protects the workers from high-temperature damage, and also helps maintain the stability of the steelmaking environment.

[0022] See also Figure 1 to Figure 2 In order to facilitate the opening and closing operation of the converter fire damper door 1, an upper main wheel 11 is provided on the top surface of the converter fire damper door 1, and a lower main wheel 8 is provided on the bottom surface of the converter fire damper door. The upper main wheel 11 is rollingly connected to the upper track 10 of the fire damper door, and the lower main wheel 8 is rollingly connected to the lower track 3 of the fire damper door. The converter fire damper door is slidably connected between the upper track 10 of the fire damper door and the lower track 3 of the fire damper door through the upper main wheel 11 and the lower main wheel 8; the upper track 10 of the fire damper door and the lower track 3 of the fire damper door are both set as single tracks. After the splashing of the converter refining process or the smoke hood, skirt board, furnace mouth slag and other debris are accumulated on the lower track 3 of the fire damper, the accumulated debris can easily cause the lower main wheel of the fire damper door to separate from the lower track of the fire damper door, causing the fire damper door to tip over and other abnormalities.

[0023] In order to solve the above problems, the utility model proposes a converter fire stop door anti-derailment device, comprising an auxiliary wheel assembly 2 welded and fixed to one side of the lower part of the converter fire stop door 1, and the auxiliary wheel assembly 2 is arranged in the middle of the side width of the converter fire stop door 1 to balance and support the converter fire stop door 1; preferably, when the lower main wheels 8 are symmetrically arranged in two along the center of the converter fire stop door 1, the auxiliary wheel assembly 2 and the two lower main wheels 8 form a stable triangular support structure.

[0024] The auxiliary wheel assembly 2 includes a connecting portion 6 and an auxiliary wheel 7 arranged at the lower part of the connecting portion 6. The connecting portion 6 is a shell with an open bottom. A support shaft 9 is welded and fixed in the connecting portion 6. A bearing is sleeved on the support shaft 9. The auxiliary wheel 7 is sleeved on the bearing so that the auxiliary wheel 7 can roll relative to the support shaft 9.

[0025] An auxiliary track 4 is arranged parallel to one side of the lower track 3 of the fire-blocking door. The auxiliary track 4 corresponds to the auxiliary wheel 7 , and the auxiliary wheel 7 is rollingly connected to the auxiliary track 4 .

[0026] The bottom surface of the converter fire-blocking door is welded with a cleaning part 5, which is adjacently arranged on both sides of the lower main wheel 8 in the direction of travel. When the lower main wheel 8 reciprocates, the cleaning part 5 first removes the debris on the lower track 3 of the fire-blocking door to prevent the lower main wheel 8 of the fire-blocking door from falling off the lower track 3 of the fire-blocking door due to the influence of the debris. The cleaning part 5 is set as a cleaning plate, which is made of iron plate. The cleaning plate is set at an angle of 5°-10° to the outer side of the lower main wheel 8 in the direction perpendicular to the lower track 3 of the fire-blocking door to facilitate the removal of debris; further, the width of the cleaning plate is 10-20mm larger than the width of the lower track 3 of the fire-blocking door on one side, and the bottom surface is 3-5mm away from the top surface of the lower track 3 of the fire-blocking door.

[0027] It should be pointed out that the rolling cooperation between the upper and lower main wheels and the upper and lower tracks of the converter fire-blocking door adopts the existing technology, which will not be described again.

[0028] The working principle of the utility model is introduced as follows:

[0029] When opening or closing the converter fire-blocking door 1, the upper main wheel 11 and the lower main wheel 8 drive the converter fire-blocking door 1 to move. The upper main wheel 11 cooperates with the upper track 10 of the fire-blocking door, and the lower main wheel 8 cooperates with the lower track 3 of the fire-blocking door to realize the movement of the converter fire-blocking door 1. However, the lower track 3 of the fire-blocking door is often piled with debris such as splashes or smoke hoods, skirts, and slag accumulation at the furnace mouth during the converter blowing process; the cleaning parts 5 arranged at both ends of the lower main wheel 8 push away the debris in time during the movement of the lower main wheel 8, thereby avoiding the influence of the debris on the lower main wheel 8.

[0030] Furthermore, the movement of the converter fire damper door 1 relies on the support of two upper and lower monorails. Once the upper main wheel or the lower main wheel malfunctions and becomes detached from the track during operation, the converter fire damper door 1 is prone to tipping over. An auxiliary wheel assembly 2 and a corresponding auxiliary track 4 are provided on one side of the converter fire damper door 1, so that the bottom surface of the converter fire damper door 1 is transformed from a single-track support to a double-track support, thereby effectively controlling the risk of the converter fire damper door 1 derailing and tipping over. Due to the limitations of the use scenarios of the converter fire damper door 1, the tipping direction of the converter fire damper door 1 is fixed. Therefore, only the auxiliary wheel assembly 2 needs to be provided on one side of the converter fire damper door 1.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A converter fire-blocking door anti-derailment device, comprising an upper main wheel (11) arranged on the top surface of the converter fire-blocking door (1), and a lower main wheel (8) arranged on the bottom surface of the converter fire-blocking door (1), wherein the upper main wheel (11) is rollingly connected to the fire-blocking door upper track (10), and the lower main wheel (8) is rollingly connected to the fire-blocking door lower track (3), and the converter fire-blocking door is slidably connected between the fire-blocking door upper track (10) and the fire-blocking door lower track (3) through the upper main wheel (11) and the lower main wheel (8); characterized in that: It also comprises an auxiliary wheel assembly (2) fixedly connected to one side of the lower part of the converter fire-blocking door (1), the auxiliary wheel assembly (2) comprising a connecting portion (6) and an auxiliary wheel (7) arranged at the lower part of the connecting portion (6); the auxiliary wheel (7) is rollingly connected to an auxiliary track (4), and the auxiliary track (4) is arranged parallel to the lower track (3) of the fire-blocking door.

2. The converter fire-blocking door anti-derailment device according to claim 1, characterized in that: The auxiliary wheel assembly (2) is arranged in the middle of the side width of the converter fire-blocking door (1) to provide stable support for the converter fire-blocking door (1).

3. The converter fire-blocking door anti-derailment device according to claim 2, characterized in that: The number of the lower main wheels (8) is two and they are symmetrically arranged along the center of the converter fire-blocking door (1); the two lower main wheels (8) and the auxiliary wheel assembly (2) form a stable triangular support structure.

4. The converter fire-blocking door anti-derailment device according to claim 1, characterized in that: The bottom surface of the converter fire-blocking door (1) is provided with a cleaning portion (5), and the cleaning portion (5) is adjacently arranged on both sides of the lower main wheel (8) in the running direction to clean the debris on the lower track (3) of the fire-blocking door.

5. The converter fire-blocking door anti-derailment device according to claim 4, characterized in that: The cleaning portion (5) is configured as a cleaning plate, the width of the cleaning plate being 10-20 mm greater than the width of the track (3) below the fire stop door on one side, and the bottom surface being 3-5 mm away from the top surface of the track (3) below the fire stop door.

6. The converter fire-blocking door anti-derailment device according to claim 5, characterized in that: The cleaning plate is arranged to be inclined 5°-10° toward the outer side of the lower main wheel (8) along the direction perpendicular to the lower track (3) of the fire-blocking door, so as to facilitate the cleaning of debris by the cleaning plate.

7. The converter fire-blocking door anti-derailment device according to claim 1, characterized in that: The connecting portion (6) is a shell structure with an opening at the bottom, a support shaft (9) is fixedly connected inside the shell structure, a bearing is sleeved on the support shaft (9), and the auxiliary wheel (7) is sleeved on the bearing so that the auxiliary wheel (7) can roll relative to the support shaft (9).

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