Furnace door lifting mechanism of submerged arc furnace

Abstract

The utility model discloses a submerged arc furnace door lifting mechanism which comprises a fixed pulley and a steel wire rope and further comprises a fixed support, a rotating disc, a connecting rod and a connecting piece, the vertically-arranged rotating disc is arranged on the fixed support in a rotating mode, and a rotating drive with an output shaft fixed to the center of the rotating disc is fixed to the back face of the fixed support. The front faces of the fixing supports are each fixedly provided with a sliding groove, and a connecting rod is arranged between the two sliding grooves in a sliding mode. A longitudinally arranged sliding rail is fixed on the connecting rod corresponding to the turntable; and a sliding block fixed with the turntable is arranged in the sliding rail in a sliding manner. The furnace door lifting and descending device has the advantages that the rotating disc is controlled to rotate in one direction through rotation driving, the furnace door lifting and descending processes can be achieved, the control structure is simple, and operation is convenient; moreover, the steel wire rope is directly driven by the connecting rod, so that the risk of accidental falling of the furnace door caused by corrosion can be avoided, the safety is improved, and meanwhile, the maintenance frequency and the maintenance cost can be reduced.

Description

Technical field:

[0001] The utility model relates to the technical field of furnace door lifting, in particular to a furnace door lifting mechanism of a submerged arc furnace. Background technology:

[0002] Traditional submerged arc furnaces use hydraulic cylinders as furnace door lifting mechanisms. Specifically, a steel wire rope is fixed between the top of the piston rod of the hydraulic cylinder and the top of the furnace door, and the middle of the steel wire rope is guided by a fixed pulley. When the furnace door is closed, the piston rod of the cylinder extends. When the furnace door needs to be lifted, the hydraulic oil is first delivered to the control valve station of the hydraulic cylinder through the oil pump in the hydraulic station, and then, through the control of the valve station, the piston rod of the hydraulic cylinder is controlled to retract, and then the furnace door is driven upward through the steel wire rope. When the furnace door needs to be closed, the control piston rod of the control console is extended to complete the lowering of the furnace door. In the process of using the hydraulic cylinder to control the lifting and lowering of the furnace door, two instructions need to be sent to the control console to complete a reciprocating motion. The control process is cumbersome, and the seal of the hydraulic cylinder is easily corroded by the flue gas overflowing from the submerged arc furnace. There is a risk of cylinder pressure relief and accidental falling of the furnace door. The damage frequency is high, and regular maintenance is required, and the maintenance cost is high. Utility model content:

[0003] The utility model aims to provide a lifting mechanism for a furnace door of an electric arc furnace.

[0004] The utility model is implemented by the following technical scheme: a furnace door lifting mechanism of an ore-heating furnace, which includes a fixed pulley and a steel wire rope, and also includes a fixed bracket, a turntable, a connecting rod and a connecting piece, wherein the turntable arranged vertically is rotatably provided on the fixed bracket, and an output shaft is fixed to the back of the fixed bracket and is a rotation drive fixed to the center of the turntable; a slide groove is fixed to the front of the fixed bracket on both sides of the turntable, and the connecting rod is slidably provided between the two slide grooves; a longitudinally arranged slide rail is fixed to the connecting rod corresponding to the turntable, and a slider fixed to the turntable is slidably provided in the slide rail; the end of the connecting rod adjacent to the furnace door is fixed to one end of the steel wire rope, and the other end of the steel wire rope passes around the fixed pulley and is fixed to the top end of the furnace door.

[0005] Furthermore, the rotary drive is a variable frequency motor.

[0006] Furthermore, a vertically arranged C-shaped fixing piece is fixed at the connecting end of the connecting rod and the steel wire rope, and fixing holes are opened on the two side plates of the C-shaped fixing piece, and the ends of the steel wire rope are passed through the fixing holes for binding and fixing.

[0007] The advantages of the utility model are as follows: in the present application, the lifting and lowering processes of the furnace door can be realized by rotating the turntable in one direction through a rotary drive control, the control structure is simple, and the operation is convenient; and, the steel wire rope is directly driven by the connecting rod, which can avoid the risk of accidental falling of the furnace door caused by corrosion, improve safety, and at the same time reduce the frequency of maintenance and reduce maintenance costs. Description of the drawings:

[0008] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0009] Figure 2 for Figure 1 A partial enlarged view of .

[0010] Figure 3 This is a usage state diagram of the utility model.

[0011] Fixed pulley 1, steel wire rope 2, fixed bracket 3, turntable 4, connecting rod 5, rotary drive 6, slide groove 7, slide rail 8, slide block 9, furnace door 10, C-shaped fixing part 11, fixing hole 12. Specific implementation method:

[0012] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0013] like Figures 1 to 3As shown, a furnace door lifting mechanism of an ore-heating furnace comprises a fixed pulley 1 and a steel wire rope 2, and also comprises a fixed bracket 3, a turntable 4, and a connecting rod 5. A turntable 4 arranged vertically is rotatably arranged on the fixed bracket 3, and a rotary drive 6 whose output shaft is fixed to the center of the turntable 4 is fixed on the back of the fixed bracket 3. In this embodiment, the rotary drive 6 is a variable frequency motor. A slide groove 7 is fixed to the front of the fixed bracket 3 on both sides of the turntable 4, and a connecting rod 5 is slidably arranged between the two slide grooves 7. The two slide grooves 7 can support and guide the connecting rod 5. A longitudinally arranged slide rail 8 is fixed to the connecting rod 5 corresponding to the turntable 4, and a slider 9 fixed to the turntable 4 is slidably arranged in the slide rail 8; the end of the connecting rod 5 adjacent to the furnace door 10 is fixed to one end of the steel wire rope 2, and the other end of the steel wire rope 2 is fixed to the top of the furnace door 10 by passing around the fixed pulley 1. A vertically arranged C-shaped fixing piece 11 is fixed at the connecting end of the connecting rod 5 and the steel wire rope 2. Fixing holes 12 are opened on the two side plates of the C-shaped fixing piece 11. The ends of the steel wire rope 2 pass through the fixing holes 12 for binding and fixing.

[0014] Working process:

[0015] The lifting mechanism is located in an upper layer of the plane where the furnace door 10 is located. In the initial position, the slider 9 is located at the rightmost position, and at this time, the furnace door 10 is in a closed state.

[0016] like Figure 1 As shown, when the furnace door 10 needs to be lifted, the rotary drive 6 is started to control the turntable 4 to rotate counterclockwise. At this time, the turntable 4 drives the slide rail 8 to move to the left through the slider 9, thereby pushing the connecting rod 5 to the left as a whole; when the connecting rod 5 is pushed to the left, it drives the wire rope 2 to lift the furnace door 10 upward, and when it rotates to the leftmost position, the furnace door 10 is fully opened.

[0017] like Figure 3 As shown, when the furnace door 10 needs to be closed again, the turntable 4 is controlled to continue to rotate counterclockwise by the rotary drive 6, and the slider 9 drives the slide rail 8 to move to the right, thereby pushing the connecting rod 5 as a whole to the right, and the furnace door 10 begins to descend. When the slider 9 moves to the far right, the furnace door 10 is closed.

[0018] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A furnace door lifting mechanism for a submerged arc furnace, comprising a fixed pulley and a steel wire rope, characterized in that: It also includes a fixed bracket, a turntable, a connecting rod and a connecting piece, wherein the turntable is rotatably arranged vertically on the fixed bracket, and an output shaft is fixed to the back of the fixed bracket and is a rotation drive fixed to the center of the turntable; a slide groove is fixed to the front of the fixed bracket on both sides of the turntable, and the connecting rod is slidably arranged between the two slide grooves; a longitudinally arranged slide rail is fixed to the connecting rod corresponding to the turntable, and a slider fixed to the turntable is slidably arranged in the slide rail; the end of the connecting rod adjacent to the furnace door is fixed to one end of the steel wire rope, and the other end of the steel wire rope is fixed to the top of the furnace door by passing around the fixed pulley.

2. The door lifting mechanism of a submerged arc furnace according to claim 1, characterized in that: The rotary drive is a variable frequency motor.

3. The door lifting mechanism of a submerged arc furnace according to claim 1, characterized in that: A vertically arranged C-shaped fixing piece is fixed at the connecting end of the connecting rod and the steel wire rope, and fixing holes are opened on the two side plates of the C-shaped fixing piece, and the ends of the steel wire rope pass through the fixing holes for binding and fixing.

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