Safe dumping assembly for electric arc furnace

Abstract

The utility model discloses a safe toppling assembly for an electric arc furnace, which comprises two support frames and a central shaft rotatably arranged on the support frames, the central shaft is used for supporting the electric arc furnace to turn over, the two central shafts are fixedly connected with moment plates, and the moment plates are connected with a double-shaft motor through a positioning plate; arc-shaped grooves are formed in the two supporting frames, racks are arranged in the two arc-shaped grooves, and the two racks are engaged with gears arranged at the ends of two output shafts of the double-shaft motor correspondingly. The problem that in the prior art, in the process that a motor keeps high torque for a long time, an electric arc furnace is overturned to pour a smelting solution, the motor is prone to damage, the electric arc furnace vibrates, the smelting solution in the electric arc furnace splashes, and safety threats are caused to workers is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal smelting technical field, concretely relates to a safe dumping assembly for electric arc furnace. BACKGROUND

[0002] Electric arc furnace is the electric furnace that smelts ore and metal by electrode arc, and energy is very concentrated when electric arc is formed by gas discharge in electric arc furnace, and the temperature of arc area is above 3000 DEG C, for smelting metal, electric arc furnace has greater flexibility than other steelmaking furnace process, can effectively remove impurities such as sulfur and phosphorus, furnace temperature is easy to control, and the equipment occupies small area, and it is suitable for smelting high-quality alloy steel, and refractory materials generally need to be smelted at high temperature during production, and electric arc furnace for production of refractory materials needs to be used during smelting, and due to factors such as large volume and heavy weight, the electric arc furnace needs to be used with a dumping device when dumping the material after smelting to facilitate pouring out the smelting solution in the electric arc furnace to proceed to the next processing procedure.

[0003] The existing electric arc furnace dumping assembly is mostly connected with a support frame as support through a central shaft, and the central shaft is rotatably connected with the support frame for rotating the electric arc furnace, and the central shaft is connected with a speed reducer driven by a motor, and when the smelting solution in the electric arc furnace needs to be poured out, the motor directly drives the electric arc furnace to overturn and pour out the smelting solution by cooperating with the speed reducer.

[0004] During the process of directly driving the electric arc furnace to overturn by the motor cooperating with the speed reducer to make the electric arc furnace overturn and pour out the smelting solution, the weight of the electric arc furnace and the smelting solution in the electric arc furnace provides great resistance to the operation of the motor cooperating with the speed reducer, so a motor with high torque is often used, and the motor needs to maintain stable power output during use, so the probability of damage to the motor is increased during long-time use, that is, the probability of the smelting solution in the electric arc furnace splashing out due to vibration of the electric arc furnace and causing injury to the workers is increased. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problem that the motor is easily damaged in the process of making the electric arc furnace overturn and pouring out the smelting solution by maintaining high torque for a long time in the prior art, and the smelting solution in the electric arc furnace splashes out due to vibration of the electric arc furnace, and provides a safe dumping assembly for electric arc furnace.

[0006] The utility model discloses a safe dumping assembly for electric arc furnace, which comprises two support frames and a central shaft rotatably arranged on the support frames, the central shaft is used for supporting the electric arc furnace to overturn, torque plates are fixedly connected to the two central shafts, and a double-shaft motor is connected to the torque plates through a positioning plate.

[0007] Two arc-shaped grooves are formed in each of the two support frames, and two racks are arranged in the two arc-shaped grooves respectively, and the two racks are engaged with the two gears arranged at the two output shaft ends of the double-shaft motor respectively.

[0008] As a further optimization of the safety dumping assembly for the electric arc furnace, an accommodating groove is formed in the torque plate and is in sliding cooperation with the positioning plate, and the arc-shaped groove is arranged eccentrically with respect to the central shaft, and the central distance between the arc-shaped groove and the center of the central shaft is large when the torque plate is in a horizontal state, and the central distance between the arc-shaped groove and the center of the central shaft is small when the torque plate is in a maximum inclination angle state.

[0009] As a further optimization of the safety dumping assembly for the electric arc furnace, a roller is arranged in the arc-shaped groove in a sliding manner, and the roller is arranged on the output shaft of the double-shaft motor in a rotating manner.

[0010] As a further optimization of the safety dumping assembly for the electric arc furnace, the accommodating groove and the positioning plate are both arranged in a square shape.

[0011] As a further optimization of the safety dumping assembly for the electric arc furnace, a reinforcing block is arranged between the torque plate and the electric arc furnace.

[0012] As a further optimization of the safety dumping assembly for the electric arc furnace, an elastic buffer layer is arranged on the inner wall of the arc-shaped groove, and the elastic buffer layer is made of rubber.

[0013] As a further optimization of the safety dumping assembly for the electric arc furnace, the two output shafts of the double-shaft motor pass through the two arc-shaped grooves respectively and are fixedly arranged with limiting discs.

[0014] As a further optimization of the safety dumping assembly for the electric arc furnace, the support frame is arranged in an inverted U shape.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The torque plate, the double-shaft motor arranged on the torque plate, the gear arranged at the end of the double-shaft motor and the rack arranged on the support frame are cooperated to drive the central shaft to rotate, then the double-shaft motor is driven to support and overturn the electric arc furnace to pour the smelting solution, the torque plate is arranged to reduce the torque required when the double-shaft motor operates, and the torque required when the double-shaft motor bears the electric arc furnace to overturn and tilt is also reduced, thereby the damage of the double-shaft motor caused by the continuous high torque output is reduced, and the probability that the smelting solution is splashed out due to the vibration of the electric arc furnace caused by the damage of the double-shaft motor and the harm to the workers is reduced.

[0017] Further, the arc-shaped groove is arranged eccentrically with the central shaft, that is, the distance between the center of the arc-shaped groove and the central shaft is maximum when the electric arc furnace is kept in the vertical state, and the distance between the center of the arc-shaped groove and the central shaft gradually decreases with the gradual tilting of the electric arc furnace, so that the tilting speed of the electric arc furnace gradually increases, that is, the tilting speed is relatively low during the process of tilting and pouring the smelting solution of the full electric arc furnace, so as to reduce the occurrence of the splashing phenomenon of the smelting solution, and when the smelting solution in the electric arc furnace is less, the tilting and pouring speed is relatively fast, so as to increase the discharge speed of the residual smelting solution, that is, the work efficiency of the worker is improved to a certain extent. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a front view structural schematic diagram of the utility model;

[0019] Fig. 2 It is a rear view structural schematic diagram of the utility model;

[0020] Marked in the figure: 1, support frame; 2, arc-shaped groove; 301, limiting disc; 302, gear; 303, roller; 304, rack; 305, double-shaft motor; 306, positioning plate; 401, torque plate; 402, adaptive groove; 403, reinforcing block; 5, electric arc furnace; 6, central shaft. DETAILED DESCRIPTION

[0021] In order to better understand the utility model, the content of the utility model will be further illustrated below in combination with examples, but the content of the utility model is not limited to the following examples.

[0022] As Figs. 1-2 Indicated, a kind of electric arc furnace safety dumping assembly, same as prior art is, including with the center of electric arc furnace 5 fixed connection and coaxial center arrangement of two central shafts 6, two central shafts 6 are all rotationally connected with support frame 1, support frame 1 supports central shaft 6 for electric arc furnace 5 overturning tilt, further pour the smelting solution in electric arc furnace 5.

[0023] Different from the prior art, the arc-shaped groove 2 is arranged on the support frame 1, the torque plate 401 is fixedly arranged on the two central shafts 6, the double-shaft motor 305 is connected with the torque plate 401 through the positioning plate 306, the gear 302 is fixedly arranged on the two output shafts of the double-shaft motor 305, the two gears 302 are respectively engaged with the two racks 304 arranged on the two arc-shaped grooves 2, when the double-shaft motor 305 operates, the torque plate 401 is driven to rotate the central shaft 6 through the engagement of the gears 302 and the racks 304, the longer torque provided by the torque plate 401 can reduce the initial torque required for the operation of the double-shaft motor 305, and can cooperate with the gears 302 and the racks 304 to reduce the pressure of the double-shaft motor 305 when driving the electric arc furnace 5 to maintain the overturning and dumping, when the double-shaft motor 305 is damaged, the gears 302 and the racks 304 can be used to realize buffering, and the arc-shaped groove 2 is used for limiting to reduce the probability of continuous vibration and overturning of the electric arc furnace 5, that is, to reduce the probability of splashing of the smelting solution in the electric arc furnace 5.

[0024] The support frame 1 is arranged in an inverted U shape, so that the support frame 1 can bear the arc-shaped groove 2 and also maintain the stability of supporting the electric arc furnace 5 through the central shaft 6.

[0025] The two output shafts of the double-shaft motor 305 pass through the arc-shaped groove 2 and are fixedly provided with the limiting disc 301, the limiting disc 301 is arranged to assist in limiting the axial position of the gear 302, thereby further maintaining the engagement stability of the gear 302 and the rack 304.

[0026] The positioning plate 306 and the torque plate 401 are arranged in a square shape and are slidably connected through the adaptive groove 402, so as to limit the rotation of the double-shaft motor 305 on the basis of maintaining the sliding of the positioning plate 306 in the adaptive groove 402, so as to stably drive the gear 302 to cooperate with the rack 304 to drive the torque plate 401 to rotate, and the sliding of the positioning plate 306 in the adaptive groove 402 can adapt the shape of the arc-shaped groove 2 to avoid structural interference when the double-shaft motor 305 drives the torque plate 401 to rotate, and the two rotating shafts of the two double-shaft motors 305 are rotatably provided with the rollers 303, and the two rollers 303 are rotatably arranged in the arc-shaped groove 2, so that the gear 302 and the rack 304 can be stably engaged.

[0027] The arc-shaped groove 2 is arranged eccentrically with the central shaft 6, that is, the distance between the center of the arc-shaped groove 2 and the central shaft 6 is the largest when the electric arc furnace 5 is kept in the vertical state, and the distance between the center of the arc-shaped groove 2 and the central shaft 6 gradually decreases as the electric arc furnace 5 is gradually tilted, that is, the initial circumference of the arc-shaped groove 2 is relatively long, so that the double-shaft motor 305 needs to rotate for a relatively long time to complete a certain angle change when the electric arc furnace 5 is initially tilted, so that the speed of the initial tilting of the electric arc furnace 5 is relatively slow, that is, the electric arc furnace 5 is prevented from being tilted too fast, which may cause the full-load smelting solution to splash out and cause harm to the workers, and the tilting speed of the electric arc furnace 5 can be increased when the smelting solution in the electric arc furnace 5 is relatively small, so that the residual smelting solution in the electric arc furnace 5 can be quickly discharged.

[0028] The inner wall of the arc-shaped groove 2 is provided with an elastic buffer layer, which is made of rubber. The elastic buffer layer can buffer the collision caused by the loss of power due to the failure of the double-shaft motor 305, thereby improving the use safety of the assembly.

[0029] The torque plate 401 and the electric arc furnace 5 are provided with a reinforcing block 403. The reinforcing block 403 can improve the stability of the torque plate 401 in driving the electric arc furnace 5 to tilt, and the reinforcing block 403 can reduce the force borne by the connection between the electric arc furnace 5 and the central shaft 6, thereby reducing the structural damage of the electric arc furnace 5 caused by excessive tilting torque, that is, reducing the possibility of the electric arc furnace 5 leaking smelting solution.

[0030] The specific embodiments of the utility model have been described above. It should be understood that the utility model is not limited to the above specific embodiments, and those skilled in the art can make various modifications or changes within the scope of the claims, which does not affect the essential content of the utility model.

Claims

1. A safety tilting assembly for an electric arc furnace, comprising two support frames (1) and a central shaft (6) rotatably arranged on the support frames (1) for supporting the tilting of the electric arc furnace (5), characterized in that: Two center shafts (6) are fixedly connected with torque plates (401), and the torque plates (401) are connected with a double-shaft motor (305) through a positioning plate (306); Two support frames (1) are provided with arc-shaped grooves (2), and the two arc-shaped grooves (2) are provided with racks (304), and the two racks (304) are respectively engaged with gears (302) arranged at two output shaft ends of the double-shaft motor (305).

2. A safety tilt-out assembly for an electric arc furnace as defined in claim 1, characterized in that: The torque plate (401) is provided with an adaptive groove (402) which is in sliding fit with the positioning plate (306), and the arc-shaped groove (2) is arranged eccentrically with the center shaft (6), the center distance between the arc-shaped groove (2) corresponding to the horizontal state of the torque plate (401) and the center of the center shaft (6) is large, and the center distance between the arc-shaped groove (2) corresponding to the maximum inclination angle state of the torque plate (401) and the center of the center shaft (6) is small.

3. A safety tilt-out assembly for an electric arc furnace as defined in claim 2, characterized in that: A roller (303) is slidably arranged in the arc-shaped groove (2), and the roller (303) is rotatably arranged on the output shaft of the double-shaft motor (305) penetrating through the adaptive groove (402).

4. A safety tilt-out assembly for an electric arc furnace as defined in claim 2, characterized in that: The adaptive groove (402) and the positioning plate (306) are both provided in square section.

5. A safety tilt-out assembly for an electric arc furnace as defined in claim 1, wherein: The torque plate (401) is provided with a reinforcing block (403) between the torque plate (401) and the electric arc furnace (5).

6. A safety tilt-out assembly for an electric arc furnace as defined in claim 1, wherein: An elastic buffer layer is arranged on the inner wall of the arc-shaped groove (2), and the elastic buffer layer is made of rubber.

7. A safety tilt-out assembly for an electric arc furnace as defined in claim 1, wherein: The end portions of the two output shafts of the double-shaft motor (305) respectively penetrate through the two arc-shaped grooves (2) and are fixedly provided with limiting discs (301).

8. A safety tilt-out assembly for an electric arc furnace as defined in claim 1, wherein: The support frame (1) is provided in inverted U shape.

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