Under-furnace mobile maintenance platform for converter and refining furnace

Abstract

The utility model discloses an under-furnace mobile maintenance platform for a converter and a refining furnace, and relates to a mobile maintenance platform technology. The platform longitudinal beams and the platform cross beams are adjacently arranged, the four stand columns are arranged at the bottoms of the joints of the platform longitudinal beams and the platform cross beams, a platform frame is integrally formed, the working platform is arranged on the platform frame, trunnion supports of a cross structure are arranged between the two stand columns, and the two trunnion supports are symmetrically arranged. Trunnions are arranged on the trunnion supports, pillow supports are arranged at the bottoms of the trunnion supports, pillows are arranged on the pillow supports, the overhauling platform can be hoisted through gantry hooks through the trunnions symmetrically arranged on the two sides, and the overhauling platform can be located on a buggy ladle through the pillows symmetrically arranged on the two sides. And the maintenance platform can be quickly transferred to a maintenance working surface below a converter and a refining furnace, so that the maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a mobile maintenance platform under a converter and a refining furnace, and relates to the mobile maintenance platform technology. Background Art

[0002] When the equipment under the steelmaking converter and refining furnace fails to be repaired, especially the high-altitude equipment such as water-cooled furnace cover, smoke hood, medium pipeline, etc., it is necessary to set up scaffolding to the working surface for maintenance, and the whole maintenance process takes a long time. In case of sudden failure, it is also necessary to temporarily coordinate the scaffolding construction personnel to prepare materials and enter the site, resulting in long-term unplanned maintenance, which is very unfavorable to production stability and will cause large production stoppage losses.

[0003] For example, the argon-blowing water-cooled smoke hood of the existing converter argon station and the water-cooled furnace cover of the refining furnace are in close contact with high-temperature molten steel for a long time. The working conditions are harsh and pipeline leakage accidents are prone to occur. Each furnace base is overhauled more than 10 times a year due to leakage of the furnace cover or smoke hood. It takes 2 hours to set up scaffolding from the slag pit under the furnace to the working surface of about 5 meters. Taking a 100t converter as an example, the steel production is affected by 200t per hour, and each maintenance and scaffolding affects the steel production by 400t.

[0004] In order to reduce maintenance time and improve maintenance efficiency, a movable maintenance platform is proposed to replace the scaffolding. It can be quickly hoisted and moved to the maintenance operation position under the converter and refining furnace through existing equipment in the factory, so as to solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a mobile maintenance platform under the converter and the refining furnace in view of the defects or shortcomings in the prior art. The maintenance platform can be hoisted by means of the ear shafts symmetrically arranged on both sides, and the maintenance platform can be seated on the ladle car by means of the pillow seats symmetrically arranged on both sides, which is conducive to the rapid transfer of the maintenance platform to the maintenance work surface under the converter and the refining furnace, thereby improving the maintenance efficiency.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it includes a working platform 1, a platform longitudinal beam 2, a platform cross beam 3, and a column 4. The platform longitudinal beam 2 and the platform cross beam 3 are arranged adjacent to each other. Four columns 4 are arranged at the bottom of the connection between the platform longitudinal beam 2 and the platform cross beam 3, and the whole constitutes a platform frame. The working platform 1 is arranged on the platform frame, and a cross-structured ear shaft support 9 is arranged between two columns 4. The ear shaft support 9 is symmetrically arranged in two groups, and an ear shaft 8 is arranged on the ear shaft support 9. A pillow seat support 7 is arranged at the bottom of the ear shaft support 9, and a pillow seat 6 is arranged on the pillow seat support 7.

[0007] Furthermore, a base plate 16 is provided on the side of the ear shaft 8 facing the ear shaft support 9 , and a plurality of ribs 17 are provided on the base plate 16 to connect with the ear shaft 8 , and an axis end baffle 18 is provided on the side of the ear shaft 8 away from the ear shaft support 9 .

[0008] Furthermore, the ear shaft support 9 includes a transverse support plate arranged laterally and a longitudinal support plate arranged longitudinally, the transverse support plate is connected to the column 4, the top of the longitudinal support plate is connected to the platform longitudinal beam 2, and the bottom is connected to the pillow support 7.

[0009] Furthermore, a through window is provided on the working platform 1, and a protective cover 11 is provided on the through window. The protective cover 11 is hinged to the working platform 1 through a hinge 15, and a straight ladder 10 is vertically provided at the bottom of the through window.

[0010] Furthermore, a small working platform 12 is provided on the working platform 1, an inclined ladder 19 is provided on one side of the small working platform 12, and a fixing plate 20 is provided on the working platform 1 and connected to the small working platform 12 by bolts.

[0011] Furthermore, platform railings 5 ​​are arranged around the working platform 1 , and the platform railings 5 ​​are arranged higher than the small working platform 12 .

[0012] Furthermore, a connecting rod 22 is provided on one side of the column 4 adjacent to the ear shaft support 9, and a cross support 21 is provided at the diagonal position between the two columns 4 on the side away from the straight ladder 10.

[0013] Furthermore, a counterweight 13 is provided inside the pillow support 7 .

[0014] Furthermore, a handle 14 is provided at the bottom of the protective cover 11 .

[0015] After adopting the above technical scheme, the beneficial effects of the utility model are as follows: through the ear shafts symmetrically arranged on both sides, the maintenance platform can be hoisted using the gantry hook, and through the pillow seats symmetrically arranged on both sides, the maintenance platform can be seated on the ladle car, which is conducive to the rapid transfer of the maintenance platform to the maintenance work surface under the converter and refining furnace, thereby improving the maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

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

[0018] Figure 2 yes Figure 1 A front view of

[0019] Figure 3 yes Figure 2 A top view of

[0020] Figure 4 It is a schematic diagram of the structure of the middle ear shaft 8 of the utility model;

[0021] Figure 5 It is a schematic diagram of the utility model and the gantry hook 23 hoisting matching state;

[0022] Figure 6 This is a schematic diagram of the cooperation state between the utility model and the ladle car 24;

[0023] Figure 7 yes Figure 6 Side view of.

[0024] Explanation of the reference numerals: 1: working platform, 2: platform longitudinal beam, 3: platform cross beam, 4: column, 5: platform railing, 6: pillow seat, 7: pillow seat support, 8: ear shaft, 9: ear shaft support, 10: straight ladder, 11: protective cover plate, 12: small working platform, 13: counterweight, 14: handle, 15: loose-leaf, 16: base plate, 17: rib plate, 18: shaft end baffle, 19: inclined ladder, 20: fixed plate, 21: cross support, 22: connecting rod, 23: gantry hook, 24: ladle car. DETAILED DESCRIPTION

[0025] See also Figure 1-7 As shown, the technical solution adopted in this specific implementation is: it includes a work platform 1, a platform longitudinal beam 2, a platform cross beam 3, and a column 4. The platform longitudinal beam 2 and the platform cross beam 3 are arranged adjacent to each other, and four columns 4 are arranged at the bottom of the connection between the platform longitudinal beam 2 and the platform cross beam 3, forming a platform frame as a whole. In the traditional maintenance operation process, scaffolding is often used for maintenance, which requires much time and manpower. Therefore, in this embodiment, a frame-type maintenance platform is set up, and the main body forms a frame structure through the cross beams and columns. Specifically, the work platform 1 is set on the platform frame and is the main maintenance action area for the operator;

[0026] A cross-structured trunnion support 9 is provided between the two columns 4. Two groups of trunnion supports 9 are symmetrically provided. A trunnion 8 is provided on the trunnion support 9. The trunnion is provided on the trunnion support. It is a matching and symmetrical arrangement. It is particularly important to note that it needs to be provided above the center of gravity of the entire maintenance platform to ensure that the center of gravity is at the bottom during lifting, and the whole will not tilt. The center distance of the trunnion matches the center distance of the gantry hook of the crane used for the molten steel receiving span. When maintenance is required, the maintenance platform can be lifted and moved by aligning the gantry hook with the trunnion position for lifting. It can be placed on the ladle car and then moved to the bottom of the furnace to start maintenance. The overall structure is simple and easy to use, which can effectively shorten the maintenance preparation time and improve the maintenance efficiency.

[0027] Specifically, in order to enable the maintenance platform to move stably with the ladle car and perform maintenance operations normally, a pillow support 7 is provided at the bottom of the ear shaft support 9, and a pillow seat 6 is provided on the pillow support 7. The pillow seat matches the groove on the ladle car so that the maintenance platform will not move with the ladle car and is placed firmly.

[0028] To be more specific, a base plate 16 is provided on the side of the ear shaft 8 facing the ear shaft support 9, and a plurality of ribs 17 are provided on the base plate 16 to be connected to the ear shaft 8, and an axis end baffle 18 is provided on the side of the ear shaft 8 away from the ear shaft support 9. The ribs can increase the strength of the ear shaft, and the axis end baffle is used to prevent the gantry hook from falling off.

[0029] To be more specific, the ear shaft support 9 includes a transverse support plate arranged laterally and a longitudinal support plate arranged longitudinally, the transverse support plate is connected to the column 4, the top of the longitudinal support plate is connected to the platform longitudinal beam 2, and the bottom is connected to the pillow seat support 7. In this embodiment, the ear shaft support is a cross-shaped structure, and a cross-shaped structure in the vertical direction, which supports the two columns laterally to improve stability, and connects the longitudinal beam and the pillow seat support longitudinally to improve overall stability.

[0030] To be more specific, a through window is provided on the working platform 1, on which a protective cover 11 is arranged. The protective cover 11 is hinged to the working platform 1 through a hinge 15, and a straight ladder 10 is vertically arranged at the bottom of the through window. When the maintenance platform is moved to the maintenance position, the operator can go up to the working platform through the straight ladder, push open the protective cover when moving, and start maintenance work on the working platform through the through window. It should be noted that the protective cover should be covered back when performing maintenance work to prevent falling from the through window.

[0031] To be more specific, a small working platform 12 is provided on the working platform 1, an inclined ladder 19 is provided on one side of the small working platform 12, and a fixed plate 20 is provided on the working platform 1 and connected to the small working platform 12 by bolts. Since the heights of the equipment to be repaired are different, a small working platform is also provided on the working platform to facilitate the repair of areas at different heights. At the same time, an inclined ladder is provided to facilitate climbing, and a fixed plate is provided on the working platform to connect and fix it to the small working platform to increase firmness and improve work safety.

[0032] To be more specific, the working platform 1 is also provided with platform railings 5 ​​around it, and the platform railings 5 ​​are arranged higher than the small working platform 12. The setting of the platform railings increases the safety of maintenance work on the working platform, and must be higher than the small working platform to prevent safety accidents when working on the small working platform.

[0033] To be more specific, a connecting rod 22 is provided on one side of the adjacent ear shaft support 9 of the column 4, and a cross support 21 is provided at the diagonal between the two columns 4 on the side away from the straight ladder 10. In the present embodiment, only one connecting rod is provided, that is, it is provided on the side close to the straight ladder to facilitate entry into the straight ladder for operation, and a group of cross supports are provided between the two columns on the opposite side thereof. By providing the cross supports diagonally, the overall strength of the maintenance platform is increased.

[0034] More specifically, a counterweight 13 is provided inside the pillow support 7, and the counterweight is helpful to lower the overall center of gravity and increase stability during hoisting and movement.

[0035] More specifically, a handle 14 is provided at the bottom of the protective cover 11, which is convenient for pushing open the protective cover. In this embodiment, it is shown at the bottom of the protective cover, and a handle can also be provided at the top to facilitate opening the protective cover from the top.

[0036] The working principle of the utility model is as follows: when maintenance is required, the gantry hook 23 is moved to the top of the working platform 1 and hoisted at the position of the ear shaft 8. At the same time, the gantry hook 23 is limited by the shaft end baffle 18 on the outside of the ear shaft 8 to prevent the gantry hook 23 from slipping. Then the entire maintenance platform is lifted and moved to the ladle car 24, and the pillow seat 6 is aligned with the corresponding groove on the ladle car 24, so that the maintenance platform is stably seated on the ladle car 24. At this time, when the ladle car 24 is moved to the bottom of the furnace, the operator goes up to the working platform 1 through the straight ladder 10 and can start maintenance. During maintenance, the protective cover 11 is covered to prevent the operator from falling through the window. When maintenance is required to go to a higher place, the inclined ladder 19 can be used to go up to the small working platform 12 to perform maintenance at a higher place. Compared with building a scaffold, it is not only convenient to move and safer, but also improves maintenance efficiency and reduces production stoppage losses.

[0037] The above description is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A mobile maintenance platform under a converter and a refining furnace, characterized in that: The utility model comprises a working platform (1), a platform longitudinal beam (2), a platform cross beam (3), and a column (4). The platform longitudinal beam (2) and the platform cross beam (3) are arranged adjacent to each other. Four columns (4) are arranged at the bottom of the connection between the platform longitudinal beam (2) and the platform cross beam (3), and the whole constitutes a platform frame. The working platform (1) is arranged on the platform frame. A cross-structured ear shaft support (9) is arranged between two columns (4). Two groups of ear shaft supports (9) are symmetrically arranged. An ear shaft (8) is arranged on the ear shaft support (9). A pillow seat support (7) is arranged at the bottom of the ear shaft support (9), and a pillow seat (6) is arranged on the pillow seat support (7).

2. The mobile maintenance platform under the converter and refining furnace according to claim 1 is characterized by: The ear shaft (8) is provided with a base plate (16) on the side facing the ear shaft support (9), and a plurality of ribs (17) are provided on the base plate (16) and connected to the ear shaft (8), and an axis end baffle (18) is provided on the side of the ear shaft (8) away from the ear shaft support (9).

3. The mobile maintenance platform under the converter and refining furnace according to claim 1 is characterized by: The ear shaft support (9) includes a transverse support plate arranged transversely and a longitudinal support plate arranged longitudinally, the transverse support plate is connected to the column (4), the top of the longitudinal support plate is connected to the platform longitudinal beam (2), and the bottom is connected to the pillow support (7).

4. The mobile maintenance platform under the converter and refining furnace according to claim 1 is characterized by: The work platform (1) is provided with a through window, on which a protective cover plate (11) is arranged. The protective cover plate (11) is hinged to the work platform (1) through a hinge (15), and a straight ladder (10) is vertically arranged at the bottom of the through window.

5. The mobile maintenance platform under the converter and refining furnace according to claim 1 is characterized by: A small working platform (12) is arranged on the working platform (1), an inclined ladder (19) is arranged on one side of the small working platform (12), and a fixing plate (20) is arranged on the working platform (1) and connected to the small working platform (12) by bolts.

6. The mobile maintenance platform under the converter and refining furnace according to claim 1 is characterized by: The working platform (1) is also provided with platform railings (5) around it, and the platform railings (5) are arranged higher than the small working platform (12).

7. The mobile maintenance platform under the converter and refining furnace according to claim 1 is characterized by: A connecting rod (22) is provided on one side of the column (4) adjacent to the ear shaft support (9), and a cross support (21) is provided at a diagonal position between two columns (4) on the side away from the straight ladder (10).

8. The mobile maintenance platform under the converter and refining furnace according to claim 1 is characterized by: A counterweight (13) is arranged inside the pillow support (7).

9. The mobile maintenance platform under the converter and refining furnace according to claim 4 is characterized by: A handle (14) is provided at the bottom of the protective cover plate (11).

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