Oxygen lance lifting device for steel ladle

Abstract

The oxygen lance lifting device for the steel ladle comprises a connecting hook and a lifting device, an oxygen lance arrangement groove is formed in a connecting plate of the connecting hook, an oxygen lance is arranged in the oxygen lance arrangement groove, two locking supporting seats are symmetrically arranged on the connecting plate on the two sides of the oxygen lance arrangement groove, and the ends of the locking supporting seats are rotationally connected with a first connecting block. The locking end of the first connecting block is matched with an oxygen lance arranging base arranged on the lifting device, the connecting end of the first connecting block is rotationally connected with the second connecting block, the second connecting block is rotationally connected with one end of the sliding lifting hook, and the sliding lifting hook is in sliding connection with the connecting plate. The oxygen lance lifting device has the beneficial effect that the scheme provides the oxygen lance lifting device for steelmaking. The connection between the oxygen lance and the lifting device is improved, and the controllable locking structure is utilized to fix the oxygen lance on the lifting device, so that the operation of replacing the oxygen lance is more convenient. The problem that in a traditional oxygen lance lifting mechanism, due to the fact that the temperature on the furnace cover is high, the oxygen lance is difficult to fix manually is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of steelmaking, more particularly to an oxygen lance lifting device for a ladle. BACKGROUND

[0002] After the electric furnace tapping, the molten steel is injected into the ladle for refining. The oxygen lance is generally used during the ladle refining. During smelting, the oxygen lance is inserted into the ladle from above the ladle cover and blows oxygen into the molten steel. After smelting is completed, the oxygen lance is lifted outside the ladle. In the prior art, the lifting device and the oxygen lance are fixedly connected by manual fixing methods such as welding. When the oxygen lance needs to be replaced, workers need to work on the furnace cover. Since the temperature on the electric arc furnace cover is high, it is difficult to operate when the oxygen lance needs to be replaced, which is not conducive to production. SUMMARY

[0003] The utility model overcomes the deficiency in the prior art and provides an oxygen lance lifting device for a ladle.

[0004] The utility model discloses a purpose is realized through the following technical scheme.

[0005] An oxygen lance lifting device for a ladle, comprising a coupling hook and a lifting device, a coupling plate of the coupling hook is provided with an oxygen lance setting groove, an oxygen lance is arranged in the oxygen lance setting groove, two locking support seats are symmetrically arranged on the coupling plate on the two sides of the oxygen lance setting groove, the end of the locking support seat is rotatably connected with a first connecting block, the locking end of the first connecting block is matched with an oxygen lance setting seat arranged on the lifting device, the connecting end of the first connecting block is rotatably connected with a second connecting block, the second connecting block is rotatably connected with one end of a sliding hook on the corresponding side, the sliding hook is slidably connected with the coupling plate, and the other end of the sliding hook is fixedly connected with a sling.

[0006] The oxygen lance setting seat is of an annular structure.

[0007] A centralizing piece is arranged in the oxygen lance setting seat.

[0008] The centralizing piece is a hollow circular tube structure with a tapered cross section.

[0009] The lifting device comprises a support, a power unit, a transmission mechanism, an oxygen lance lifting base and an oxygen lance setting seat, the power unit and the transmission mechanism are arranged on the support, the power unit and the transmission mechanism are connected in a matched mode, the transmission mechanism is provided with the oxygen lance lifting base, and the oxygen lance lifting base is provided with the oxygen lance setting seat.

[0010] An auxiliary limiting ring is arranged on the oxygen lance lifting base, and the auxiliary limiting ring is arranged at a position matched with the oxygen lance setting seat.

[0011] A coupling fixing seat is arranged on the lifting device, the coupling fixing seat is fixedly arranged on the electric arc furnace, and the support of the lifting device is fixedly connected with the coupling fixing seat.

[0012] The sealing sleeve is arranged at a position matched with the oxygen lance inlet of the electric arc furnace.

[0013] The utility model discloses the beneficial effects that:

[0014] The utility model provides a kind of oxygen lance lifting device for steelmaking. The connection between oxygen lance and lifting device is improved, and the oxygen lance is fixed on lifting device using controllable locking structure, so that the operation of replacing oxygen lance is more convenient. Overcome the problem that manual fixing oxygen lance is difficult due to high temperature on the furnace cover in the traditional oxygen lance lifting mechanism.

[0015] On this basis, the connection part of oxygen lance and lifting mechanism and the lifting mechanism are further improved. The oxygen lance can be better set on the lifting mechanism to move up and down, so that the overall device is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic diagram of the utility model;

[0017] Figure 2 It is the structure schematic diagram of the connecting hook;

[0018] Figure 3 It is the structure schematic diagram of oxygen lance arranged on the connecting hook;

[0019] Figure 4 It is the structure schematic diagram of the connecting hook and oxygen lance setting seat butt joint;

[0020] Figure 5 It is the structure schematic diagram of the lifting device;

[0021] Figure 6 It is the structure schematic diagram of the transmission mechanism;

[0022] In the figure: 1, connecting hook; 11, connecting plate; 12, oxygen lance setting groove; 13, locking support seat; 14, first connecting block; 15, second connecting block; 16, sliding hook; 17, sling; 2, lifting device; 21, oxygen lance setting seat; 22, support; 23, power unit; 24, transmission mechanism; 25, oxygen lance lifting base; 26, auxiliary limiting ring; 27, connecting fixed seat; 28, sealing sleeve; 3, oxygen lance; 4, centralizing member. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model will be further described below through specific embodiment.

[0024] EMBODIMENT

[0025] The utility model provides an oxygen lance lifting device for a ladle, which comprises a coupling hook 1 and a lifting device 2, a coupling plate 11 of the coupling hook 1 is provided with an oxygen lance setting groove 12, an oxygen lance 3 is arranged in the oxygen lance setting groove 12, two locking support seats 13 are symmetrically arranged on the coupling plate 11 on both sides of the oxygen lance setting groove 12, end portions of the locking support seats 13 are rotationally connected with first coupling blocks 14, locking ends of the first coupling blocks 14 are matched with an oxygen lance setting seat 21 arranged on the lifting device 2, connecting ends of the first coupling blocks 14 are rotationally connected with second coupling blocks 15, the second coupling blocks 15 are rotationally connected with one end of a corresponding side sliding hook 16, the sliding hook 16 is slidingly connected with the coupling plate 11, and the other end of the sliding hook 16 is fixedly connected with a sling 17.

[0026] The oxygen lance setting seat 21 has a ring structure.

[0027] The oxygen lance setting seat 21 is provided with a centralizing piece 4.

[0028] The centralizing piece 4 has a hollow circular tube structure with a tapered cross section.

[0029] The lifting device 2 comprises a support 22, a power unit 23, a transmission mechanism 24, an oxygen lance lifting base 25 and the oxygen lance setting seat 21, the power unit 23 and the transmission mechanism 24 are arranged on the support 22, the power unit 23 and the transmission mechanism 24 are connected in a matched mode, the transmission mechanism 24 is provided with the oxygen lance lifting base 25, and the oxygen lance lifting base 25 is provided with the oxygen lance setting seat 21.

[0030] The oxygen lance lifting base 25 is provided with an auxiliary limiting ring 26, and the auxiliary limiting ring 26 is arranged at a position matched with the oxygen lance setting seat 21.

[0031] The lifting device 2 is provided with a coupling fixing seat 27, the coupling fixing seat 27 is fixedly arranged on an electric arc furnace, and the support 22 of the lifting device 2 is fixedly connected with the coupling fixing seat 27.

[0032] The coupling fixing seat 27 is provided with a sealing sleeve 28, and the sealing sleeve 28 is arranged at a position matched with an oxygen lance inlet of the electric arc furnace.

[0033] The working principle of the utility model is as follows:

[0034] As shown in Figure 1 , Figure 5 and Figure 6 , the lifting device 2 is fixedly connected with a furnace cover of the electric arc furnace through the coupling fixing seat 27. The lifting device 2 is driven by the power unit 23 to drive the transmission mechanism 24 to drive the oxygen lance lifting base 25 to vertically move up and down, and the oxygen lance 3 is fixedly arranged in the oxygen lance setting seat 21. The sealing sleeve 28 is used for sealing between the oxygen lance 3 and the electric arc furnace.

[0035] Further, in the embodiment, the power unit 23 is a motor, and the transmission mechanism 24 is a chain drive.

[0036] As shown in Figure 2 and Figure 3 , the coupling hook 1 uses the coupling plate 11 as the base of the component, the oxygen lance setting groove 12 is used to pass and fixedly connect the oxygen lance, and the oxygen lance 3 and the coupling hook 1 are integrated into a structure, which is installed as a whole during installation, and can also be hoisted as a whole during construction, without the need for integration operation on the furnace cover, so that the construction is more convenient. In the embodiment, the welding mode is used to complete the fixation.

[0037] As shown in Figure 4 , the fixed coupling hook 1 and the oxygen lance 3 are connected with the oxygen lance setting seat 21 in the mode of insertion. The lower end of the oxygen lance 3 can be well kept at a vertical downward angle into the oxygen lance setting seat 21 through the action of the centralizing piece 4, and an auxiliary limiting ring 26 is further arranged to facilitate the limiting of the oxygen lance 3. The number of the auxiliary limiting ring 26 is one in the embodiment, which can be adjusted according to the actual situation.

[0038] The coupling hook 1 controls the first coupling block 14 and the second coupling block 15 through the relative position of the sliding hook 16 and the coupling plate 11. When the sliding hook 16 rises relative to the coupling plate 11, the connecting end of the second coupling block 15 moves to the coupling plate 11, driving the first coupling block 14 to rotate to an open angle, so that the oxygen lance setting seat 21 can enter between the locking support seats 13. When the sliding hook 16 descends relative to the coupling plate 11, the connecting end of the second coupling block 15 moves to the opposite direction of the coupling plate 11, driving the first coupling block 14 to rotate to a closed angle, and the locking end of the first coupling block 14 is locked with the bottom of the oxygen lance setting seat 21, fixing the position of the oxygen lance.

[0039] In use, the sliding hook 16 always keeps a natural downward state under the influence of gravity, which can make the first coupling block 14 always keep a locked state. At the same time, the oxygen lance 3 provides an upward force during oxygen blowing, so that the coupling plate 11 always receives an upward force, which can also ensure that the first coupling block 14 always keeps a locked state.

[0040] When replacement is needed, the locking state can be contacted by lifting the lifting cable 17, the oxygen lance 3 can be quickly replaced, which is very convenient for on-site construction.

[0041] The embodiments of the utility model have been described in detail, but the content described can only be the preferred embodiments of the utility model, and cannot be considered as limiting the implementation range of the utility model. Any equivalent changes and improvements made within the scope of the utility model application shall still belong to the patent coverage range of the utility model.

Claims

1. An oxygen lance lifting device for a steel ladle, characterized in that: The device includes a connecting hook and a lifting device. The connecting plate of the connecting hook is provided with an oxygen lance setting slot, and an oxygen lance is installed in the oxygen lance setting slot. Two locking support seats are symmetrically provided on the connecting plates on both sides of the oxygen lance setting slot. The end of the locking support seat is rotatably connected to the first connecting block. The locking end of the first connecting block matches the oxygen lance setting seat provided on the lifting device. The connecting end of the first connecting block is rotatably connected to the second connecting block. The second connecting block is rotatably connected to one end of the corresponding side sliding hook. The sliding hook is slidably connected to the connecting plate. The other end of the sliding hook is fixedly connected to the sling.

2. The oxygen lance lifting device for a steel ladle according to claim 1, characterized in that: The oxygen lance holder has a ring-shaped structure.

3. The oxygen lance lifting device for a ladle according to claim 1, characterized in that: The oxygen lance holder is equipped with a centering element.

4. The oxygen lance lifting device for a steel ladle according to claim 3, characterized in that: The straightening component is a hollow circular tube structure with a tapered cross-section.

5. The oxygen lance lifting device for a steel ladle according to claim 1, characterized in that: The lifting device includes a support frame, a power unit, a transmission mechanism, an oxygen lance lifting base, and an oxygen lance mounting base. The support frame is equipped with the power unit and the transmission mechanism, which are connected in cooperation. The transmission mechanism is equipped with the oxygen lance lifting base, and the oxygen lance lifting base is equipped with the oxygen lance mounting base.

6. The oxygen lance lifting device for a steel ladle according to claim 5, characterized in that: An auxiliary limiting ring is provided on the oxygen lance lifting base, and the position of the auxiliary limiting ring matches that of the oxygen lance mounting base.

7. The oxygen lance lifting device for a steel ladle according to claim 5, characterized in that: The lifting device is equipped with a connecting and fixing seat, which is fixedly installed on the electric arc furnace. The support of the lifting device is fixedly connected to the connecting and fixing seat.

8. The oxygen lance lifting device for a steel ladle according to claim 7, characterized in that: The connecting mounting base is equipped with a sealing sleeve, and the position of the sealing sleeve matches the oxygen lance inlet of the electric arc furnace.

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