Vacuum arc furnace head rotating positioning device

Abstract

This utility model relates to a rotary positioning device for the furnace head of a vacuum consumable furnace. Several buffer devices are bolted to the furnace station housing. An inner ring of a slewing bearing is fixed to the upper end face of the connecting flange of the furnace station housing. A rotating column support for the furnace is bolted to the upper end face of the outer ring of the slewing bearing. A drive rotation device is installed on one side of the slewing bearing on the furnace station housing. The drive rotation device drives the slewing bearing, causing the rotating column support to rotate. When the rotating column support touches one of the buffer devices, it stops rotating. Buffer devices are installed at the extreme positions on both sides of the furnace head rotary positioning device, absorbing the impact kinetic energy when the furnace head rotates to its extreme position, eliminating the impact force between the furnace head and the rotary positioning device, ensuring stable operation, and improving the reliability of the equipment.

Description

Technical Field

[0001] The embodiments of this utility model relate to a rotary positioning device in the field of vacuum self-consuming furnace technology, specifically to a rotary positioning device for the furnace head of a vacuum self-consuming furnace. Background Technology

[0002] In existing vacuum arc remelting furnaces, the furnace head needs to periodically rotate and switch between two stations during operation. Specifically: after remelting, the furnace head is first rotated from one station to the other; then, after remelting at the original station, the ingot is unloaded, a new ingot mold is installed, and new base material is hoisted in; next, the furnace head is rotated from the other station back to the original station; finally, the electrodes of the new base material are clamped, and the next arc remelting cycle begins. In this way, the vacuum arc remelting furnace repeatedly performs these operations to meet the on-site smelting production needs.

[0003] Traditional furnace head rotation positioning devices combine proximity sensor signal sensing with bolt hard limiters. When the furnace head rotates into the proximity sensor's sensing range, the control system issues a command to stop the furnace head rotation. However, due to the furnace head's inertia, it continues to rotate at a certain angle, colliding with the bolt hard limiter and generating impact force. This affects the stability of the furnace head's operation and even the smooth operation of the entire vacuum arc furnace. Furthermore, during the design process, different types of positioning devices need to be selected to match vacuum arc furnaces of different tonnages, making the design and selection process very complex. Utility Model Content

[0004] The purpose of this utility model is to provide a vacuum consumable furnace head rotation positioning device that has a buffer device set at the extreme positions on both sides of the furnace head rotation positioning device. The buffer device absorbs the impact kinetic energy when the furnace head rotates to the extreme position, eliminates the impact force between the furnace head and the rotation positioning device, and can be matched with the application conditions of consumable furnaces of different tonnages.

[0005] To achieve the above objectives, the present invention provides a vacuum self-consuming furnace head rotation positioning device, comprising:

[0006] Self-consuming furnace station box;

[0007] A buffer device, wherein several buffer devices are fixed to the self-consuming furnace station box by bolts;

[0008] A slewing bearing, with its inner ring fixed on the upper end face of the connecting flange of the consumable furnace station box;

[0009] The self-consuming furnace rotating column support is fixed to the upper end face of the outer ring of the slewing bearing by bolts.

[0010] A drive rotation device is provided on one side of the slewing bearing on the self-consuming furnace station housing; the drive rotation device drives the slewing bearing, causing the self-consuming furnace rotating column support to rotate; when the self-consuming furnace rotating column support touches one of the buffer devices, the self-consuming furnace rotating column support stops rotating.

[0011] Furthermore, in the vacuum self-consuming furnace head rotation positioning device of this utility model, two buffer devices are fixed on both sides of the self-consuming furnace rotating column support and above the self-consuming furnace station box.

[0012] Furthermore, in the vacuum self-consuming furnace head rotation positioning device of this utility model, the buffer device is symmetrically distributed along the central axis of the self-consuming furnace station box.

[0013] Furthermore, in the vacuum self-consuming furnace head rotation positioning device of this utility model, the buffer device further includes:

[0014] A buffer seat plate, which is fixed to the buffer bracket by bolts;

[0015] The buffer is fixed to the buffer seat plate by a threaded connection.

[0016] During the rotation of the vacuum self-consuming furnace head, the buffer head on the buffer directly contacts the bottom plate of the self-consuming furnace rotating column support, absorbing the impact kinetic energy when the bottom plate of the self-consuming furnace rotating column support rotates to the limit position, so as to eliminate the impact force during the rotation of the self-consuming furnace rotating column support.

[0017] A proximity sensor bracket, which is fixed to the buffer bracket by bolts;

[0018] A proximity sensor is fixedly connected to a proximity sensor bracket by threads; the signal sensing position of the proximity sensor can be adjusted by changing the extension length of the proximity sensor.

[0019] A hard limit bolt is fixed on the buffer bracket by a lock nut; by changing the extension length of the hard limit bolt, the rotation limit position of the bottom plate of the self-consuming furnace rotating column bracket corresponding to the hard limit bolt is adjusted.

[0020] A buffer force adjustment knob is used to fix the buffer force adjustment knob to the buffer.

[0021] Furthermore, in the vacuum self-consuming furnace head rotation positioning device of this utility model, the driving rotation device further includes:

[0022] A rotary reducer mounting plate is fixed on the self-consuming furnace station housing.

[0023] A rotary speed reducer is fixed to the rotary speed reducer mounting plate by bolts.

[0024] A pneumatic motor is fixedly connected to the input end of the rotary reducer;

[0025] A pagoda-shaped air connector is used to connect two of the pagoda-shaped air connectors to the pneumatic motor.

[0026] The electromagnetic pneumatic valve is connected to the pagoda-shaped air connector via an air pipe.

[0027] The drive sprocket is fixedly connected to the output shaft of the rotary reducer by a locking screw, so as to transmit torque from the rotary reducer to the drive sprocket;

[0028] A drive chain is fitted onto the teeth of the drive sprocket, and both ends of the drive chain are connected to the two tie rod devices by passing around the outer cylindrical surface of the outer ring of the slewing bearing; through the connection of the drive chain, torque is transmitted from the drive sprocket to the slewing bearing.

[0029] Furthermore, in the vacuum self-consuming furnace head rotation positioning device of this utility model, the output shaft of the pneumatic motor is coaxially connected to the input shaft of the rotary reducer, so that the torque is transmitted from the pneumatic motor to the rotary reducer.

[0030] Furthermore, in the vacuum self-consuming furnace head rotation positioning device of this utility model, the electromagnetic pneumatic valve is connected to a PLC controller via a control line; the PLC controller sends forward, stop, and reverse signals to switch and control the electromagnetic pneumatic valve. The electromagnetic pneumatic valve controls the forward, stop, and reverse operation of the pneumatic motor by changing the on / off state and flow direction of compressed air in the air circuit.

[0031] Furthermore, in the vacuum self-consuming furnace head rotation positioning device of this utility model, an adjustment scale is set on the buffer force adjustment knob. By changing the buffer force adjustment knob to the corresponding scale, the buffer force of the buffer is changed.

[0032] Furthermore, in the vacuum self-consuming furnace head rotation positioning device described in this utility model, the vacuum self-consuming furnace head is placed on the vacuum self-consuming furnace head rotation positioning device.

[0033] Compared with the prior art, the embodiment of this utility model involves fixing several buffer devices to the self-consuming furnace station housing with bolts; fixing the inner ring of the slewing bearing to the upper end face of the connecting flange of the self-consuming furnace station housing; fixing the self-consuming furnace rotating column support to the upper end face of the outer ring of the slewing bearing with bolts; and setting a drive rotation device on one side of the slewing bearing on the self-consuming furnace station housing. The drive rotation device drives the slewing bearing, causing the self-consuming furnace rotating column support to rotate. When the self-consuming furnace rotating column support touches one of the buffer devices, the self-consuming furnace rotating column support stops rotating. Buffer devices are set at the extreme positions on both sides of the furnace head rotation positioning device, realizing the absorption of the impact kinetic energy when the furnace head rotates to the extreme position, eliminating the impact force between the furnace head and the rotation positioning device, ensuring the stable operation of the furnace head and the entire vacuum self-consuming furnace, and improving the reliability of the equipment. Furthermore, to facilitate design selection, the vacuum self-consuming furnace furnace head rotation positioning device provided by this utility model can be matched with the application conditions of self-consuming furnaces of different tonnages.

[0034] Compared with the prior art, the implementation method of this utility model solves the technical problem that the traditional furnace head rotation positioning device, which uses a combination of proximity sensor signal sensing and bolt hard limit, cannot stop the furnace head rotation when it rotates into the sensing range of the proximity sensor. Instead, due to the inertia of the furnace head, it continues to rotate at a certain angle and collide with the bolt hard limit, generating a certain impact force, which affects the stability of the furnace head operation and even the smooth operation of the entire vacuum arc furnace. Simultaneously, it solves the technical problem that in the design process of the furnace head positioning device, different types of positioning assemblies are needed to match vacuum arc furnaces of different tonnages, making the design and selection process very complex. Attached Figure Description

[0035] Figure 1 This is the front view of the present invention;

[0036] Figure 2 This is a top view of the present invention;

[0037] Figure 3 This is the left view of the present invention;

[0038] Figure 4 This is a front view of the buffer device in this utility model;

[0039] Figure 5 This is a top view of the buffer device in this utility model.

[0040] In the diagram: 1-Buffer device, 2-Waste gas furnace rotating column support, 3-Drive chain, 4-Drive sprocket, 5-Pneumatic motor, 51-Pagoda air connector, 6-Slewing reducer, 7-Waste gas furnace station housing, 71-Slewing reducer mounting plate, 8-Tie rod device, 9-Slewing bearing, 10-Electromagnetic pneumatic valve, 11-PLC controller, 100-Drive slewing device, 101-Buffer, 102-Proximity sensor support, 103-Proximity sensor, 104-Hard limit bolt, 105-Buffer force adjustment knob, 106-Buffer seat plate, 107-Buffer support. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0042] The embodiments of this utility model relate to a rotary positioning device for the furnace head of a vacuum consumable furnace, such as... Figures 1-5 As shown, it includes:

[0043] In this embodiment, the self-consuming furnace station box 7 serves as the base of the vacuum self-consuming furnace head rotation positioning device in this embodiment.

[0044] Several buffer devices 1 are fixed to the self-consuming furnace station box 7 by bolts; the buffer devices 1 are used for buffering.

[0045] The inner ring of the slewing bearing 9 is fixed on the upper end face of the connecting flange of the self-consuming furnace station box 7; the slewing bearing 9 is used to rotate the furnace head of the vacuum self-consuming furnace.

[0046] The self-consuming furnace rotating column support 2 is fixed to the upper end face of the outer ring of the slewing bearing 9 by bolts; the self-consuming furnace rotating column support 2 is used to place the furnace head of the rotating vacuum self-consuming furnace;

[0047] A drive rotation device 100 is installed on one side of the slewing bearing 9 on the self-consuming furnace station box 7. The drive rotation device 100 drives the slewing bearing 9, causing the self-consuming furnace rotating column support 2 to rotate. When the self-consuming furnace rotating column support 2 touches one of the buffer devices 1, the self-consuming furnace rotating column support 2 stops rotating.

[0048] The vacuum arc furnace head rotation positioning device in this embodiment utilizes a buffer device to absorb the impact kinetic energy when the furnace head rotates to its limit position, eliminating the impact force between the furnace head and the rotation positioning device. This ensures the stable operation of the furnace head and the entire vacuum arc furnace, improving the equipment's reliability. Furthermore, to facilitate design selection, the vacuum arc furnace head rotation positioning device provided in this embodiment can be matched to the application conditions of arc furnaces of different tonnages. It solves the technical problem in existing technologies where traditional furnace head rotation positioning devices use a combination of proximity sensor signal sensing and bolt hard limit. When the furnace head rotates into the proximity sensor's sensing range, the control system issues a command to stop the furnace head rotation. However, due to the furnace head's inertia, it continues to rotate at a certain angle, impacting the bolt hard limit and generating a certain impact force, affecting the stability of the furnace head and even the smooth operation of the entire vacuum arc furnace. It also solves the technical problem that during the design process of the furnace head positioning device, different types of positioning assemblies are needed to match vacuum arc furnaces of different tonnages, making the design and selection process very complex.

[0049] To achieve the aforementioned technical effects, the vacuum self-consuming furnace head rotation positioning device in this embodiment, such as... Figures 1-5 As shown, two buffer devices 1 are fixed on both sides of the rotating column support 2 of the consumable furnace and above the furnace station housing 7. The two buffer devices 1 are symmetrically distributed along the central axis of the furnace station housing 7, each corresponding to the extreme position of the furnace head rotation on each side. During the rotation of the furnace head, the buffer device 1 can absorb the impact kinetic energy when the furnace head rotates to the extreme position, thereby eliminating the impact force between the furnace head and the rotating positioning mechanism, ensuring the stable operation of the furnace head and the entire vacuum consumable furnace, and improving the reliability of the equipment.

[0050] To achieve the aforementioned technical effects, the vacuum self-consuming furnace head rotation positioning device in this embodiment, such as... Figures 1-5 As shown, the buffer device 1 further includes:

[0051] The buffer seat plate 106 is fixed to the buffer bracket 107 by bolts;

[0052] The buffer 101 is fixedly connected to the buffer seat plate 106 by a threaded connection;

[0053] During the rotation of the vacuum self-consuming furnace head, the buffer head on the buffer 101 directly contacts the bottom plate of the self-consuming furnace rotating column support 2, absorbing the impact kinetic energy when the bottom plate of the self-consuming furnace rotating column support 2 rotates to the limit position, so as to eliminate the impact force during the rotation of the self-consuming furnace rotating column support 2.

[0054] The proximity sensor bracket 102 is fixed to the buffer bracket 107 by bolts;

[0055] The proximity sensor 103 is fixedly connected to the proximity sensor bracket 102 by threads; the signal sensing position of the proximity sensor 103 is adjusted by changing the extension length of the proximity sensor 103.

[0056] The hard limit bolt 104 is fixed on the buffer bracket 107 by locking nuts; by changing the extension length of the hard limit bolt 104, the rotation limit position of the bottom plate of the self-consuming furnace rotating column bracket 2 corresponding to the hard limit bolt 104 is adjusted.

[0057] The buffer force adjustment knob 105 is fixed to the buffer 101. The buffer force adjustment knob 105 is used to adjust the buffer force of the buffer 101.

[0058] In this embodiment, the buffer 101 is fixed to the buffer seat plate 106 by a threaded connection. The buffer seat plate 106 is fixed to the buffer bracket 107 by bolts. During the rotation of the furnace head, the buffer head of the buffer 101 directly contacts the bottom plate of the self-consuming furnace rotating column bracket 2, absorbing the impact kinetic energy when the bottom plate of the self-consuming furnace rotating column bracket 2 rotates to the limit position, so as to eliminate the impact force between the self-consuming furnace rotating column bracket 2 and the rotation positioning mechanism.

[0059] The proximity sensor 103 is fixed to the proximity sensor bracket 102 via a threaded connection. The proximity sensor bracket 102 is fixed to the buffer bracket 107 by bolts. The signal sensing position of the proximity sensor 103 can be adjusted by changing the extension length of the proximity sensor 103. During the rotation of the furnace head, when the base plate of the self-consuming furnace rotating column bracket 2 rotates into the signal sensing range of the proximity sensor 103, the proximity sensor 103 immediately sends a furnace head rotation positioning signal to the PLC controller 11. The PLC controller 11 immediately sends a drive command to the solenoid pneumatic valve 10 to cut off the airflow in the air circuit, causing the pneumatic motor 5 to stop rotating.

[0060] The rigid limit bolt 104 is fixed to the buffer bracket 107 by a lock nut. By changing the extension length of the rigid limit bolt 104, the rotation limit position of the base plate of the self-consuming furnace rotating column bracket 2 corresponding to the rigid limit bolt 104 can be adjusted.

[0061] The buffer force adjustment knob 105 is located at the upper end of the large cylindrical surface of the buffer 101 and is equipped with a corresponding adjustment scale. Depending on the tonnage of the vacuum arc furnace in actual application, it can meet the selection and use of vacuum arc furnaces ranging from 0.5 tons to 30 tons. By changing the buffer force adjustment knob 105 to the corresponding scale, the buffer force of the buffer 101 can be changed accordingly, ensuring that the rotary positioning device of the vacuum arc furnace head works in its optimal state and meets the needs of various tonnage conditions on site.

[0062] To achieve the aforementioned technical effects, the vacuum self-consuming furnace head rotation positioning device in this embodiment, such as... Figures 1-5 As shown, the drive rotary device 100 further includes:

[0063] Fix the rotary reducer mounting plate 71 on the self-consuming furnace station box 7;

[0064] The rotary reducer 6 is fixed to the rotary reducer mounting plate 71 with bolts;

[0065] A pneumatic motor 5 is fixedly connected to the input end of the rotary reducer 6; the pneumatic motor 5 drives the rotary reducer 6 to rotate.

[0066] Two pagoda-shaped air connectors 51 are connected to the pneumatic motor 5; the pagoda-shaped air connectors 51 are used to connect to the air source.

[0067] The pagoda-shaped air connector 51 is connected to the solenoid pneumatic valve 10 via an air pipe; the solenoid pneumatic valve 10 controls the on / off state and flow direction of compressed air in the air circuit.

[0068] A drive sprocket 4 is fixedly connected to the output shaft of the rotary reducer 6 by a locking screw, so that the torque is transmitted from the rotary reducer 6 to the drive sprocket 4.

[0069] A drive chain 3 is mounted on the teeth of the drive sprocket 4. The two ends of the drive chain 3 pass over the outer cylindrical surface of the outer ring on the slewing bearing 9 and are connected to two tie rod devices 8. Through the connection of the drive chain 3, the torque is transmitted from the drive sprocket 4 to the slewing bearing 9.

[0070] The self-consuming furnace rotating column support 2 is fixed to the upper end face of the outer ring of the slewing bearing 9 by bolts. During operation, the self-consuming furnace rotating column support 2 can rotate together with the outer ring of the slewing bearing 9, and drive the furnace head to rotate together, realizing the switching of the furnace head between two working positions.

[0071] The inner ring of the slewing bearing 9 is fixed to the upper end face of the special connecting flange of the self-consuming furnace station box 7 by bolts.

[0072] The pneumatic motor 5 is bolted to the input end of the rotary reducer 6. The output shaft of the pneumatic motor 5 is coaxially connected to the input shaft of the rotary reducer 6, enabling torque transmission from the pneumatic motor 5 to the rotary reducer 6. Two pneumatic connectors on the pneumatic motor 5 are connected to the solenoid pneumatic valve 10 via air pipes. The solenoid pneumatic valve 10 is connected to the PLC controller 11 via control lines. The PLC controller 11 sends forward, stop, and reverse switching signals to the solenoid pneumatic valve 10 to perform corresponding actions. The solenoid pneumatic valve 10 changes the on / off state and flow direction of compressed air in the air circuit, thus switching the forward, stop, and reverse rotation of the pneumatic motor 5.

[0073] The rotary reducer 6 is fixed to the rotary reducer mounting plate 71 by bolts.

[0074] The drive sprocket 4 is fixed to the output shaft of the rotary reducer 6 by locking screws, so as to realize the transmission of torque from the rotary reducer 6 to the drive sprocket 4.

[0075] The drive chain 3 is mounted on the teeth of the drive sprocket 4, with both ends passing over the outer cylindrical surface of the slewing bearing 9 and connected to two tie rod devices 8. Through the connection of the drive chain 3, the torque is transmitted from the drive sprocket 4 to the slewing bearing 9, and then the torque is transmitted to the self-consuming furnace rotating column support 2, which drives the furnace head to switch between forward rotation, stop, and reverse rotation.

[0076] To achieve the aforementioned technical effects, the vacuum self-consuming furnace head rotation positioning device in this embodiment, such as... Figures 1-5 As shown, the vacuum self-consuming furnace head is placed on the vacuum self-consuming furnace head rotation positioning device, and the furnace head can rotate together with the self-consuming furnace rotating column support 2.

[0077] In this embodiment:

[0078] 1) After the vacuum arc remelting furnace completes one remelting cycle, the furnace head is first rotated from one station to the other. Then, after remelting at the original station, the ingot is unloaded, a new ingot mold is installed, and new base material is hoisted in. Next, the furnace head is rotated from the other station back to the original station. Finally, the electrodes of the new base material are clamped, and the next arc remelting cycle begins. In this way, the vacuum arc remelting furnace repeatedly performs the above operations to meet the on-site smelting production needs and obtain the required high-end steel grades.

[0079] 2) During the above production operation, the furnace head of the vacuum self-consuming furnace needs to be periodically rotated and switched between two workstations. Each time the base plate of the rotating column support 2 of the self-consuming furnace rotates into the signal sensing range of the proximity sensor 103, the proximity sensor 103 immediately sends a furnace head rotation positioning signal to the PLC controller 11. The PLC controller 11 immediately sends a drive command to the electromagnetic pneumatic valve 10 to cut off the airflow in the air circuit, so that the pneumatic motor 5 stops rotating.

[0080] 3) Due to the inertia of the vacuum arc furnace burner head, the base plate of the rotating column support 2 of the arc furnace will continue to rotate at a certain angle along with the vacuum arc furnace burner head and collide with the buffer device 1. At this time, the buffer head of the buffer 101 of the buffer device 1 directly contacts the base plate of the rotating column support 2 of the arc furnace, absorbing the rotational kinetic energy of the rotating column support 2 of the arc furnace (along with the vacuum arc furnace burner head), avoiding the base plate of the rotating column support 2 of the arc furnace directly impacting the hard limit bolt 104, that is, eliminating the impact force between the rotating column support 2 of the arc furnace (along with the vacuum arc furnace burner head) and the rotation positioning device, ensuring the stable operation of the burner head and the entire vacuum arc furnace, and improving the reliability of the equipment.

[0081] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A vacuum consumable furnace nozzle rotary positioning device, characterized by, include: Self-consuming furnace station box (7); A buffer device (1) is fixed to the self-consuming furnace station box (7) by bolts. The inner ring of the slewing bearing (9) is fixed on the upper end face of the connecting flange of the self-consuming furnace station box (7); The self-consuming furnace rotating column support (2) is fixed to the upper end face of the outer ring of the slewing bearing (9) by bolts. A drive rotation device (100) is provided on one side of the slewing bearing (9) on the self-consuming furnace station box (7). The drive rotation device (100) drives the slewing bearing (9) to rotate the self-consuming furnace rotating column support (2). When the self-consuming furnace rotating column support (2) touches one of the buffer devices (1), the self-consuming furnace rotating column support (2) stops rotating.

2. The vacuum consumable furnace burner rotary positioning apparatus of claim 1, wherein, Two buffer devices (1) are fixed on both sides of the self-consuming furnace rotating column support (2) and above the self-consuming furnace station box (7).

3. The vacuum self-consuming furnace head rotation positioning device according to claim 2, characterized in that, The buffer device (1) is symmetrically distributed along the central axis of the self-consuming furnace station box (7).

4. The vacuum self-consuming furnace head rotation positioning device according to claim 1, characterized in that, The buffer device (1) further includes: Buffer bracket (107); The buffer seat plate (106) is fixed to the buffer bracket (107) by bolts. The buffer (101) is fixed to the buffer seat plate (106) by a threaded connection. During the rotation of the vacuum self-consuming furnace head, the buffer head on the buffer (101) directly contacts the bottom plate of the self-consuming furnace rotating column support (2) to absorb the impact kinetic energy when the bottom plate of the self-consuming furnace rotating column support (2) rotates to the limit position, so as to eliminate the impact force during the rotation of the self-consuming furnace rotating column support (2). A proximity sensor bracket (102) is bolted to the buffer bracket (107); A proximity sensor (103) is fixedly connected to a proximity sensor bracket (102) by threads; the signal sensing position of the proximity sensor (103) is adjusted by changing the extension length of the proximity sensor (103); The hard limit bolt (104) is fixed on the buffer bracket (107) by a lock nut; by changing the extension length of the hard limit bolt (104), the bottom plate rotation limit position of the self-consuming furnace rotating column bracket (2) corresponding to the hard limit bolt (104) is adjusted. A buffer force adjustment knob (105) is used to fix the buffer force adjustment knob (105) to the buffer (101).

5. The vacuum self-consuming furnace head rotation positioning device according to claim 1, characterized in that, The drive rotary device (100) further includes: Rotary reducer mounting plate (71) is fixed on the self-consuming furnace station box (7); A rotary reducer (6) is fixed to the rotary reducer mounting plate (71) by bolts. A pneumatic motor (5) is fixedly connected to the input end of the rotary reducer (6). A pagoda-shaped air connector (51) is connected to two pagoda-shaped air connectors (51) on the pneumatic motor (5). Electromagnetic pneumatic valve (10), the pagoda air connector (51) is connected to the electromagnetic pneumatic valve (10) through an air pipe; The drive sprocket (4) is fixedly connected to the output shaft of the rotary reducer (6) by a locking screw, and the torque is transmitted from the rotary reducer (6) to the drive sprocket (4). The drive chain (3) is mounted on the teeth of the drive sprocket (4). The two ends of the drive chain (3) are respectively connected to the two tie rod devices (8) by passing around the outer cylindrical surface of the outer ring on the slewing bearing (9). Through the connection of the drive chain (3), the torque is transmitted from the drive sprocket (4) to the slewing bearing (9).

6. The vacuum self-consuming furnace head rotation positioning device according to claim 5, characterized in that, The output shaft of the pneumatic motor (5) is coaxially connected to the input shaft of the rotary reducer (6), transmitting torque from the pneumatic motor (5) to the rotary reducer (6).

7. The vacuum self-consuming furnace head rotation positioning device according to claim 5, characterized in that, The electromagnetic pneumatic valve (10) is connected to the PLC controller (11) via a control line; the PLC controller (11) sends forward, stop, and reverse signals to switch and control the electromagnetic pneumatic valve (10).

8. The vacuum self-consuming furnace head rotation positioning device according to claim 4, characterized in that, An adjustment scale is set on the buffer force adjustment knob (105). By changing the buffer force adjustment knob (105) to the corresponding scale, the buffer force of the buffer (101) is changed.

9. The vacuum self-consuming furnace head rotation positioning device according to claim 7, characterized in that, The PLC controller (11) sends forward, stop, and reverse switching signals to the electromagnetic pneumatic valve (10); the electromagnetic pneumatic valve (10) controls the forward, stop, and reverse switching of the pneumatic motor (5) by changing the on / off state and flow direction of compressed air in the air circuit.

10. The vacuum self-consuming furnace head rotation positioning device according to any one of claims 1-9, characterized in that, The vacuum self-consuming furnace head is placed on the vacuum self-consuming furnace head rotation positioning device.

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