Automatic power-off device for electric furnace tipping

Abstract

The utility model relates to the technical field of automatic power-off when an electric furnace is tilted, and in particular refers to an automatic power-off device when an electric furnace is tilted, comprising a power-off box, wherein two slide rails are fixedly arranged at the bottom end inside the power-off box, a slide groove is opened on one side of the two slide rails, sliders are slidably connected inside the two slide grooves, a pressure ring is fixedly arranged between the two sliders, a conductive rod is slidably arranged on the inner side of the pressure ring, a forward and reverse motor drives the conductive rod to move downward, so that the conductive rod leaves a connecting funnel, a ball moves to the bottom end inside the connecting funnel, and the forward and reverse motor reverses to drive the pressure ring to move upward, so that the conductive rod is limited by the ball and cannot move upward, so that when the electric furnace body tilts and moves back to its original position, the device can automatically control the conductive rod to move downward and contact with a conductive plate, thereby avoiding the need to disassemble the power-off box to reset the conductive rod, saving time and manpower, and improving work efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic power-off when an electric furnace tips over, in particular to an automatic power-off device when an electric furnace tips over. Background Art

[0002] A heat treatment furnace is a device that converts electrical energy into thermal energy. It is used to heat materials to improve their performance. When the furnace topples over accidentally, the automatic power-off device is often used to automatically cut off the power to the furnace to reduce the probability of fire.

[0003] The patent specification with the announcement number CN212082055U discloses an automatic power-off device for an electric furnace tipping, comprising an electric furnace box, the bottom of which is fixedly connected with a support foot, and the top of which is fixedly connected with a power-off box. The automatic power-off device for an electric furnace tipping, when the electric furnace box tilts or tips over, the power-off box will also tilt or tip over with the electric furnace box, because the connecting funnel is a truncated cone with a hollow interior and a missing bottom, so during the process of the connecting funnel tilting, the movable ball rolls away from the upper end of the connecting rod due to the tilting, and at this time, the connecting rod loses pressure, and the elastic force of two annular springs will sequentially move the conductive rod, the support plate and the connecting rod upward as a whole, and during the upward movement of the conductive rod, the conductive rod will be separated from the conductive ring, so that the electric furnace box will be powered off, achieving the purpose of automatic power-off of the electric furnace, and when the electric furnace tilts or tips over, personal injury and fire accidents can be avoided.

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned automatic power-off device for tilting an electric furnace has the following problems: when the conductive rod of the device loses the limit of the ball, it will extend into the inside of the connecting funnel. When the electric furnace is moved to its original position, the ball will contact the side of the conductive rod, and the conductive rod cannot be pressed back to its original position. It is necessary to disassemble the power-off box and press the conductive rod back to its original position, which wastes time and manpower and easily reduces work efficiency. In view of this, an automatic power-off device for tilting an electric furnace is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes an automatic power-off device for an electric furnace when it falls over.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an automatic power-off device for tilting an electric furnace, comprising a power-off box, two slide rails are fixedly provided at the bottom end inside the power-off box, a slide groove is opened on one side of the two slide rails, sliders are slidably connected inside the two slide grooves, a pressure ring is fixed between the two sliders, a conductive rod is slidably provided on the inner side of the pressure ring, a forward and reverse motor is fixedly provided at the bottom end inside one of the slide rails, a threaded rod is fixedly provided on the transmission shaft of the forward and reverse motor, the top end of the threaded rod is rotatably connected to the top end inside the corresponding slide rail, the side surface of the threaded rod is threadedly connected to the inside of one of the sliders, a limit rod is fixedly provided inside the other slide rail, and the side surface of the limit rod is slidably connected to the inside of the other slider.

[0007] As a further description of the above technical solution: a connecting plate is fixedly provided inside the power off box, and the bottom end of the connecting plate is fixedly connected to the top end of the two slide rails respectively, so that the connecting plate is convenient for limiting the slide rails and the conductive rods.

[0008] As a further description of the above technical solution: the interior of the connecting plate and the side of the conductive rod slide with each other, a fixed seat is fixed at the bottom end of the side of the conductive rod, a plurality of return springs are fixed at the bottom end of the fixed seat, and a conductive plate is fixed at the bottom end of the inside of the power-off box, and the fixed seat facilitates the movement of the conductive rod.

[0009] As a further description of the above technical solution: the top of the conductive plate is fixedly connected to the bottom ends of several reset springs respectively, the side of the conductive plate is fixedly provided with a wire, the side of the wire is fixedly connected to the outside of the power-off box, one end of the wire is fixedly provided with a connecting funnel, the side of the connecting funnel is fixedly connected to the inner side of the power-off box, the bottom end of the inner side of the connecting funnel is provided with a ball, the side of the ball fits with the top of the conductive rod, and the bottom end of the power-off box is fixedly provided with an electric furnace body, and the ball facilitates the limiting of the conductive rod so that the conductive rod cannot move up.

[0010] As a further description of the above technical solution: an alarm box is fixedly provided on the top of the power off box, and four pairs of sliding rods are slidably connected inside the alarm box, one end of each pair of sliding rods is fixedly provided with a pressure plate, and the other end of each pair of sliding rods is fixedly provided with an extrusion block, and the sliding rods facilitate limiting the pressure plate.

[0011] As a further description of the above technical solution: a fixed spring is fixedly provided on one side of the four pressure plates, one end of the four fixed springs is fixedly connected to the inner side of the alarm box, and the fixed spring facilitates resetting the pressure plates.

[0012] As a further description of the above technical solution: a hanging rope is fixedly provided at the top end of the alarm box, and a hanging ball is fixedly provided at the bottom end of the hanging rope, and the hanging rope is convenient for fixing the hanging ball.

[0013] As a further description of the above technical solution: an alarm switch is provided on one side of the four extrusion blocks, and the bottom ends of the four alarm switches are fixedly connected to the top of the power-off box; an alarm body is provided on one side of the four alarm switches, and the bottom ends of the four alarm bodies are fixedly connected to the top of the power-off box; the alarm switch is convenient for controlling the opening and closing of the alarm body, and the alarm body is convenient for alarming.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model is designed with an automatic power-off device for tilting an electric furnace. Through design coordination, the forward and reverse motors drive the conductive rod to move downward, so that the conductive rod leaves the connecting funnel, and the bottom end of the conductive rod contacts the conductive plate. At this time, the ball moves to the bottom end of the connecting funnel under the action of gravity and contacts the top end of the conductive rod. The forward and reverse motors reverse and drive the pressure ring to move upward, so that the conductive rod is limited by the ball and cannot move upward. At this time, the heater switch is a passage, and the electric furnace body can be heated normally, so that when the electric furnace body tilts and moves back to its original position, the device can automatically control the conductive rod to move downward and contact the conductive plate, avoiding the need to disassemble the power-off box to reset the conductive rod, which is convenient for saving time and manpower and improving work efficiency.

[0016] 2. The utility model designs an automatic power-off device for an electric furnace that tips over. Through design coordination, when the main body of the electric furnace tips over, the alarm box will also tip over, causing the hanging ball to shake, and the hanging ball will hit one of the pressure plates during the movement. When the pressure plate is squeezed, it will drive the sliding rod to move to the outside of the alarm box, thereby driving the squeezing block to move. The squeezing block will squeeze the alarm switch, turning the alarm switch into a passage, causing the alarm body to start and alarm. As a result, the device can alarm when the main body of the electric furnace tips over, which is convenient for reminding personnel to perform maintenance, thereby reducing production downtime and reducing losses. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a schematic diagram of the internal structure of the power-off box of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation structure of the pressure ring of the utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of the alarm box of the utility model;

[0021] Figure 5 The utility model is a schematic diagram of the internal structure of the alarm box.

[0022] Legend:

[0023] 1. Power-off box; 2. Slide rail; 3. Sliding block; 4. Pressing ring; 5. Conductive rod; 6. Forward and reverse motor; 7. Threaded rod; 8. Limiting rod; 9. Connecting plate; 10. Fixed seat; 11. Reset spring; 12. Conductive plate; 13. Wire; 14. Connecting funnel; 15. Ball bearing; 16. Electric furnace body; 17. Alarm box; 18. Sliding rod; 19. Pressing plate; 20. Extrusion block; 21. Fixed spring; 22. Lifting rope; 23. Lifting ball; 24. Alarm switch; 25. Alarm body. DETAILED DESCRIPTION

[0024] Reference Figure 1-Figure 5 When the cam 1 is in the state of being moved, the cam 11 is moved along the vertical axis 14, and the two cams 12 are in the state of being moved along the vertical axis 14, so that the cam 11 is moved along the vertical axis 14, and the two cams 12 are in the state of being moved along the vertical axis 14, and the two cams 12 are in the state of being moved along the vertical axis 14, and the two cams 12 are in the state of being moved along the vertical axis 14, and the two cams 12 are in the state of being moved along the vertical axis 14, and the two cams 12 are in the state of being moved along the vertical axis 14, and the two cams 12 are in the state of being moved along the vertical axis 14, and the two cams 12 are in the state of being moved along the vertical axis 14, and the two cams 12 are in the state of being moved along the vertical axis 14,

[0025] As a further implementation scheme of the above technical scheme: a connecting plate 9 is fixedly provided inside the power off box 1, and the bottom ends of the connecting plate 9 are fixedly connected to the top ends of the two slide rails 2 respectively, so that the connecting plate 9 is convenient for limiting the slide rails 2 and the conductive rods 5.

[0026] As a further implementation scheme of the above technical scheme: the interior of the connecting plate 9 and the side of the conductive rod 5 slide with each other, a fixing seat 10 is fixed at the bottom end of the side of the conductive rod 5, a plurality of return springs 11 are fixed at the bottom end of the fixing seat 10, and a conductive plate 12 is fixed at the bottom end of the inside of the power-off box 1, and the fixing seat 10 facilitates the movement of the conductive rod 5.

[0027] As a further implementation scheme of the above technical scheme: the top of the conductive plate 12 is fixedly connected to the bottom ends of several reset springs 11 respectively, the side of the conductive plate 12 is fixedly provided with a wire 13, the side of the wire 13 is fixedly connected to the outside of the power-off box 1, one end of the wire 13 is fixedly provided with a connecting funnel 14, the side of the connecting funnel 14 is fixedly connected to the inner side of the power-off box 1, the bottom end of the inner side of the connecting funnel 14 is provided with a ball 15, the side of the ball 15 is fitted with the top of the conductive rod 5, the bottom end of the power-off box 1 is fixedly provided with an electric furnace body 16, the ball 15 is convenient for limiting the conductive rod 5, so that the conductive rod 5 cannot move up.

[0028] During specific implementation: initially, the conductive plate 12, the conductive rod 5, the ball 15, the connecting funnel 14 and the wire 13 form a passage, and the heater switch of the electric furnace body 16 is connected to the wire 13 through the line. At this time, the heater switch is a passage, and the electric furnace body 16 can be heated normally. When the electric furnace body 16 is tilted, the ball 15 will slide along the connecting funnel 14, so that the conductive rod 5 loses the limit of the ball 15, and the fixing seat 10 is lifted by the reset spring 11, so that the conductive rod 5 moves up, so that the conductive rod 5 leaves the conductive plate 12. At this time, the heater switch is open circuit, and automatic power off is completed. When the electric furnace body 16 is moved back to its original position, the conductive rod 5 extends into the connecting funnel 14 for a distance, so that the ball 15 cannot press the conductive rod 5 back to its original position, and the forward and reverse motor 6 is started. The transmission shaft of the forward and reverse motor 6 drives the threaded rod 7 to rotate, thereby driving the slider 3 to move downward , thereby driving the pressure ring 4 to move downward. When the pressure ring 4 contacts the fixing seat 10, it will press the fixing seat 10 down, causing the fixing seat 10 to move downward, thereby driving the conductive rod 5 to move downward, causing the conductive rod 5 to leave the connecting funnel 14, and the bottom end of the conductive rod 5 contacts the conductive plate 12. At this time, the ball 15 moves to the bottom end of the connecting funnel 14 under the action of gravity and contacts with the top of the conductive rod 5, starting the forward and reverse motor 6 to reverse, thereby driving the threaded rod 7 to reverse, thereby driving the pressure ring 4 to move upward. The ball 15 is heavier, so that the conductive rod 5 is limited by the ball 15 and cannot move upward. At this time, the heater switch is a passage, and the electric furnace main body 16 can be heated normally, so that when the electric furnace main body 16 is tilted and moved back to its original position, the device can automatically control the conductive rod 5 to move downward and contact with the conductive plate 12, avoiding the need to disassemble the power-off box 1 to reset the conductive rod 5, which is convenient for saving time and manpower and improving work efficiency.

[0029] As a further implementation scheme of the above technical scheme: an alarm box 17 is fixedly provided on the top of the power off box 1, and four pairs of sliding rods 18 are slidably connected inside the alarm box 17. A pressure plate 19 is fixedly provided at one end of each pair of sliding rods 18, and an extrusion block 20 is fixedly provided at the other end of each pair of sliding rods 18. The sliding rods 18 facilitate limiting the pressure plate 19.

[0030] As a further implementation scheme of the above technical scheme: a fixing spring 21 is fixedly provided on one side of each of the four pressure plates 19 , and one end of each of the four fixing springs 21 is fixedly connected to the inner side of the alarm box 17 , so that the fixing spring 21 facilitates resetting of the pressure plate 19 .

[0031] As a further implementation scheme of the above technical scheme: a hanging rope 22 is fixedly provided at the top end of the alarm box 17 , and a hanging ball 23 is fixedly provided at the bottom end of the hanging rope 22 , so that the hanging rope 22 is convenient for fixing the hanging ball 23 .

[0032] As a further implementation scheme of the above technical scheme: one side of the four extrusion blocks 20 is provided with an alarm switch 24, the bottom ends of the four alarm switches 24 are fixedly connected to the top of the power-off box 1, one side of the four alarm switches 24 is provided with an alarm body 25, the bottom ends of the four alarm bodies 25 are fixedly connected to the top of the power-off box 1, the alarm switch 24 is convenient for controlling the opening and closing of the alarm body 25, and the alarm body 25 is convenient for alarming.

[0033] During specific implementation: four movable grooves are provided inside the alarm box 17, and a pressure plate 19 is provided inside each movable groove. When the hanging ball 23 moves, it will abut against the edge fillet inside the alarm box 17, and slide along the edge fillet, and finally enter the inside of one of the movable grooves, so that the hanging ball 23 can always hit one of the pressure plates 19 when the electric furnace body 16 is tilted from any direction. The power-off box 1 is arranged at the top of the electric furnace body 16, and the alarm box 17 is arranged at the top of the power-off box 1. When the electric furnace body 16 tilts, the alarm box 17 will tilt with it, so that the hanging ball 23 shakes, and the hanging ball 23 will hit one of the pressure plates 19 during the movement. When the pressure plate 19 is When squeezed, the sliding rod 18 will be driven to move toward the outside of the alarm box 17, thereby driving the squeezing block 20 to move. The squeezing block 20 will squeeze the alarm switch 24, so that the alarm switch 24 becomes a passage, so that the alarm body 25 is started and an alarm is sounded. When the electric furnace body 16 is moved back to its original position, the pressure plate 19 moves back to its original position under the action of the fixed spring 21. There is no need to disassemble the alarm box 17 to reset the pressure plate 19. At this time, the opened alarm switch 24 is closed, so that the device can perform the alarm function again, so that the device can alarm when the electric furnace body 16 falls over, which is convenient for reminding personnel to perform maintenance, thereby reducing production downtime and reducing losses.

[0034] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic power-off device for an electric furnace that tips over, comprising a power-off box (1), characterized in that: Two slide rails (2) are fixedly provided at the bottom end of the power-off box (1), a slide groove is provided on one side of the two slide rails (2), a slider (3) is slidably connected inside the two slide grooves, a pressure ring (4) is fixedly provided between the two sliders (3), a conductive rod (5) is slidably provided inside the pressure ring (4), a forward and reverse motor (6) is fixedly provided at the bottom end of one of the slide rails (2), a threaded rod (7) is fixedly provided on the transmission shaft of the forward and reverse motor (6), the top end of the threaded rod (7) is rotatably connected to the top end of the corresponding slide rail (2), the side of the threaded rod (7) is threadedly connected to the inside of one of the sliders (3), a limit rod (8) is fixedly provided inside the other slide rail (2), and the side of the limit rod (8) is slidably connected to the inside of the other slider (3).

2. The automatic power-off device for an electric furnace tipping over according to claim 1, characterized in that: A connecting plate (9) is fixedly provided inside the power-off box (1), and the bottom end of the connecting plate (9) is fixedly connected to the top ends of the two slide rails (2) respectively.

3. The automatic power-off device for an electric furnace that falls over according to claim 2, characterized in that: The interior of the connecting plate (9) and the side of the conductive rod (5) slide relative to each other, a fixing seat (10) is fixedly provided at the bottom end of the side of the conductive rod (5), a plurality of return springs (11) are fixedly provided at the bottom end of the fixing seat (10), and a conductive plate (12) is fixedly provided at the bottom end of the interior of the power-off box (1).

4. The automatic power-off device for an electric furnace tipping over according to claim 3 is characterized in that: The top of the conductive plate (12) is fixedly connected to the bottom ends of a plurality of return springs (11), a conductive wire (13) is fixedly provided on the side of the conductive plate (12), the side of the conductive wire (13) is fixedly connected to the outside of the power-off box (1), a connecting funnel (14) is fixedly provided at one end of the conductive wire (13), the side of the connecting funnel (14) is fixedly connected to the inside of the power-off box (1), a ball (15) is provided at the bottom end of the inside of the connecting funnel (14), the side of the ball (15) is in contact with the top of the conductive rod (5), and an electric furnace body (16) is fixedly provided at the bottom end of the power-off box (1).

5. The automatic power-off device for an electric furnace tipping over according to claim 1 is characterized in that: An alarm box (17) is fixedly provided at the top of the power-off box (1), and four pairs of sliding rods (18) are slidably connected inside the alarm box (17), a pressing plate (19) is fixedly provided at one end of each pair of sliding rods (18), and an extrusion block (20) is fixedly provided at the other end of each pair of sliding rods (18).

6. The automatic power-off device for an electric furnace that falls over according to claim 5, characterized in that: A fixing spring (21) is fixedly provided on one side of each of the four pressure plates (19), and one end of each of the four fixing springs (21) is fixedly connected to the inner side of the alarm box (17).

7. The automatic power-off device for an electric furnace that falls over according to claim 6, characterized in that: A hanging rope (22) is fixedly provided at the top end of the alarm box (17), and a hanging ball (23) is fixedly provided at the bottom end of the hanging rope (22).

8. The automatic power-off device for an electric furnace tipping over according to claim 7, characterized in that: One side of each of the four extrusion blocks (20) is provided with an alarm switch (24), the bottom ends of each of the four alarm switches (24) are fixedly connected to the top of the power-off box (1), and one side of each of the four alarm switches (24) is provided with an alarm body (25), the bottom ends of each of the four alarm bodies (25) are fixedly connected to the top of the power-off box (1).

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