A top gear box alpha angle fault detection method for top gear box

Abstract

The application discloses a top gear box alpha angle fault detection method of a bell-less top gear box, and the method comprises the following steps: S1, reading the encoder indication and the code disc indication respectively; S2, comparing the encoder indication and the code disc indication; S3, when the encoder indication is equal to the code disc indication, the upper and lower limit method is adopted for detection, and when the encoder indication is not equal to the code disc indication, the star differential speed reducer and the gearbox are maintained; and S4, determining the dismounting position according to the detection result. The method has the advantages of reducing the influence on the blast furnace production, avoiding the cost increase and abnormal furnace conditions of the blast furnace, and the like.

Description

Technical Field

[0001] This invention relates to the field of fault detection technology for bellless furnace top transmission gearboxes, and particularly to a method for detecting α-angle faults in bellless furnace top transmission gearboxes. Background Technology

[0002] The charging feeder is one of the most critical pieces of equipment in a bell-less blast furnace. Its stable performance directly affects the quality of the blast furnace charging and plays a decisive role in adjusting and ensuring stable furnace conditions. When abnormal furnace conditions occur and gas flow occurs in the pipes, the high-pressure gas flow that rises instantaneously inside the furnace will hit the charging feeder, causing it to tilt upwards. The components inside the transmission gearbox will be damaged by the enormous external force. When it is necessary to eliminate the influencing factors, the transmission gearbox is the most difficult part to troubleshoot. Problems inside the gearbox cannot be diagnosed based on digital data. If the problem is not detected and eliminated in time, it will have a huge impact on the blast furnace.

[0003] Therefore, a method for detecting α-angle faults in the top transmission gearbox of a bellless furnace is provided, which can solve the above problems. Summary of the Invention

[0004] The technical problem this invention aims to solve is that when a blast furnace experiences abnormal operation and gas flow in the pipeline, the sudden rise in high-pressure gas flow inside the furnace hits the material distributor, causing it to tilt upwards. This results in damage to various components within the transmission gearbox due to the immense external force. When troubleshooting influencing factors, the transmission gearbox is the most difficult part to address, as internal problems cannot be identified digitally. Failure to detect and resolve these problems promptly can have a significant impact on the blast furnace. Therefore, this invention provides a method for detecting α-angle faults in the bell-less blast furnace top transmission gearbox. This method includes:

[0005] A transmission gearbox and a star-shaped differential reducer; several transmission gears are distributed inside the transmission gearbox, and the star-shaped differential reducer and the transmission gearbox are driven by several gears, and are disposed on the upper part of the transmission gearbox; the transmission gearbox includes a rotating ring, a tilting ring, a tilting reducer, and a drive connecting rod; the fabric spreader is suspended on the drive connecting rod inside the transmission gearbox; the tilting reducer is used to realize the up and down tilting of the fabric spreader, characterized in that it includes:

[0006] S1. Read the encoder readings and code disk readings respectively;

[0007] S2. Compare the encoder readings and the code disk readings;

[0008] S3. When the encoder reading is equal to the code disk reading, the upper and lower limit method is used for detection. When the encoder reading is not equal to the code disk reading, the star differential reducer and gearbox are inspected.

[0009] S4. Determine the disassembly location based on the test results.

[0010] Furthermore, the procedure for repairing the star-shaped differential reducer and gearbox when the encoder reading is not equal to the code disk reading includes: repairing the star-shaped differential reducer when the encoder reading is greater than the code disk reading, and repairing the gearbox when the encoder reading is less than the code disk reading.

[0011] Furthermore, the upper and lower limit method detection includes:

[0012] Remove the two electrical limit switches on the encoder while the blast furnace is operating continuously.

[0013] Set the material distributor to the position next to the machine in the on-site control box;

[0014] Set the tilting mechanism to its lower limit to check if the lower part of the tilting mechanism is functioning properly.

[0015] Move the tilt mechanism to its upper limit to check if the upper part of the tilt mechanism is functioning properly.

[0016] Furthermore, determining whether the lower part of the tilting mechanism is normal by tilting to the lower limit includes: stopping the tilting when it is close to the lower limit of 15°, and continuing to tilt downwards after the tilting motor has stopped. If the tilting angle stops at 13°, it indicates that the lower part of the tilting transmission mechanism is normal. If the tilting continues without stopping at the mechanical limit of 13°, it indicates that the lower part of the tilting transmission mechanism is faulty.

[0017] Furthermore, the fault in the lower part of the tilting transmission mechanism is that the driven wheel on the tilting rotary ring and the tilting reducer is misaligned.

[0018] Furthermore, determining whether the upper part of the tilting mechanism is normal by tilting to the upper limit includes: stopping the tilting when it is close to the upper limit of 50°, and continuing to tilt upwards after the tilting motor has stopped. If the tilting angle stops at 53°, the mechanical limit is working normally and the upper part of the tilting transmission mechanism is normal. If the tilting angle does not stop at 53°, it indicates that there is a fault in the upper part of the transmission mechanism.

[0019] Furthermore, the fault in the upper part of the transmission mechanism is: damage to the tilting reducer and damage to the internal worm gear.

[0020] Furthermore, it also includes testing the change in the tilting motor current. When tilting downwards, the current increases or the motor is adjusted, causing the linkage actuator to tip over.

[0021] Implementing this invention has the following beneficial effects:

[0022] 1. This invention enables inspection of the tilting motor without shutting down the blast furnace, achieving rapid inspection, reducing the impact on blast furnace production, and avoiding increased maintenance costs and abnormal operating conditions. Attached Figure Description

[0023] Figure 1 This is a flowchart of the present invention;

[0024] Figure 2 This is a structural diagram of the furnace top distributor of the present invention;

[0025] The corresponding labels in the attached drawings are: 1-transmission gearbox, 2-rotating slewing ring, 3-tilting slewing ring, 4-tilting reducer, 5-first driven wheel, 6-tilting connecting rod, 10-material feeder, 7-rotating motor, 8-tilting motor, 9-encoder, 11-second driven wheel, 12-third driven wheel, 13-fourth driven wheel, and 14-fifth driven wheel. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example

[0028] Please refer to the accompanying drawings. The technical problem to be solved in this embodiment is that when the blast furnace experiences abnormal furnace conditions and pipeline gas flow, the high-pressure gas flow that rises instantaneously inside the furnace will hit the material distributor, causing the material distributor to tilt upwards. The components inside the transmission gearbox will be damaged by the enormous external force. When it is necessary to eliminate influencing factors, the transmission gearbox is the most difficult part to eliminate. Problems inside the gearbox cannot be determined by digital analysis. If the problem is not detected and eliminated in time, it will have a huge impact on the blast furnace. Therefore, a method for detecting α-angle faults in the bellless blast furnace top transmission gearbox is provided. The bellless blast furnace top transmission gearbox α-angle fault detection method includes:

[0029] A transmission gearbox and a star-shaped differential reducer; several transmission gears are distributed inside the transmission gearbox, and the star-shaped differential reducer and the transmission gearbox are driven by several gears, and are located on the upper part of the transmission gearbox; the transmission gearbox includes a rotating ring, a tilting ring, a tilting reducer, and a drive connecting rod; the fabric distributor is suspended on the drive connecting rod inside the transmission gearbox; the tilting reducer is used to realize the up and down tilting of the fabric distributor, characterized in that it includes:

[0030] S1. Read the encoder readings and code disk readings respectively;

[0031] S2. Compare the encoder readings and the code disk readings;

[0032] S3. When the encoder reading is equal to the code disk reading, the upper and lower limit method is used for detection. When the encoder reading is not equal to the code disk reading, the star differential reducer and gearbox are inspected.

[0033] S4. Determine the disassembly location based on the test results.

[0034] When the encoder reading is not equal to the code disk reading, the maintenance of the star differential reducer and gearbox includes: when the encoder reading is greater than the code disk reading, the star differential reducer is inspected; when the encoder reading is less than the code disk reading, the gearbox is inspected.

[0035] Upper and lower limit methods for detection include:

[0036] Remove the two electrical limit switches on the encoder while the blast furnace is operating continuously.

[0037] Set the material distributor to the position next to the machine in the on-site control box;

[0038] Set the tilting mechanism to its lower limit to check if the lower part of the tilting mechanism is functioning properly.

[0039] Move the tilt mechanism to its upper limit to check if the upper part of the tilt mechanism is functioning properly.

[0040] To determine if the lower part of the tilting mechanism is functioning properly, tilt the device to its lower limit. Stop tilting when it's close to the lower limit (15°). After the tilting motor has stopped, continue tilting downwards. If the tilting angle stops at 13°, the lower part of the tilting transmission mechanism is functioning correctly. If the tilting continues without stopping at the 13° mechanical limit, the lower part of the tilting transmission mechanism is faulty.

[0041] The fault in the lower part of the tilting transmission mechanism is: misalignment of the driven wheel on the tilting slewing ring and the tilting reducer.

[0042] To determine if the upper part of the tilting mechanism is functioning properly, tilt the device to its upper limit (approximately 50°) and stop tilting. After the tilting motor has come to a complete stop, continue tilting upwards. If the tilting angle stops at 53°, the mechanical limit switch is functioning correctly, and the upper part of the tilting transmission mechanism is normal. If the tilting angle reaches 53° but the mechanical limit switch does not stop, it indicates a malfunction in the upper part of the transmission mechanism.

[0043] The fault in the upper part of the transmission mechanism is: the tilting reducer is damaged and the internal worm gear is damaged.

[0044] It also includes testing the change in current of the tilting motor. When tilting downwards, if the current increases or the motor is adjusted, the linkage actuator will tip over.

[0045] In this embodiment: a transmission gearbox for a bellless furnace top material feeder includes a transmission gearbox 1, a rotating motor 7, a tilting motor 8, and various driven gears; the fault detection of the transmission gearbox includes the rotating ring 2, the tilting ring 3, the driven wheel 5, the tilting reducer 4, and the tilting connecting rod 6. Faults in any of these components will cause the material feeding tilting angle to become disordered.

[0046] When there is frequent gas flow in the blast furnace, the driven wheel 5, reducer 4, and tilting connecting rod 6 in the transmission gearbox may be damaged or deformed by external forces. Each of these problems will lead to inaccurate material feeding angle. This invention involves removing the two electrical limit switches on the tilt encoder while the blast furnace is operating continuously. The material distributor is positioned next to the machine on the control box. The tilt is manually adjusted to approximately the lower limit of 15° and then stopped. After the tilt motor stops, the tilt is continued downwards. If the tilt stops at 13°, the mechanical limit switch is functioning correctly, and the lower part of the tilt transmission mechanism is normal. If the tilt does not stop at 13° and the tilt continues, a fault exists within the transmission gearbox, causing inaccurate tilt angles. Alternatively, the tilt is manually adjusted to approximately the upper limit of 50° and then stopped. After the tilt motor stops, the tilt is continued upwards. If the tilt stops at 53°, the mechanical limit switch is functioning correctly, and the upper part of the tilt transmission mechanism is normal. If the tilt does not stop at 53° and the tilt continues, a fault exists within the transmission gearbox. If both of these conditions occur, an internal fault in the transmission gearbox is identified, requiring a shutdown.

[0047] When the transmission gearbox is working normally, the mechanical upper and lower limits of the tilting reducer are 13° to 53°. The rotating ring 2 rotates constantly, while the tilting ring 3 and the tilting reducer 4 operate during fabric feeding. Misalignment of the driven wheel 5 will cause the tilting ring to spin freely, affecting the tilting reducer and tilting mechanism.

[0048] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0049] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A top gear box alpha angle fault detection method for a bell-less furnace, the bell-less furnace gear box distributor comprising a transmission gear box, a star differential speed reducer; a plurality of transmission gears are distributed in the transmission gear box, the star differential speed reducer and the transmission gear box are driven through a plurality of gears, and are arranged on the upper part of the transmission gear box; the transmission gear box comprises a rotary ring, a tilting rotary ring, a tilting speed reducer and a driving connecting rod; the distributor is suspended on the driving connecting rod in the transmission gear box; The tilting reducer is used for realizing up and down tilting of the distributor, and is characterized in that, Comprise: S1. respectively read the encoder indication and the code disc indication; S2. compare the encoder indication and the code disc indication; S3. when the encoder indication is equal to the code disc indication, then the up and down limit method detection is adopted, and when the encoder indication is not equal to the code disc indication, then the star differential reducer and the gearbox are maintained; S4. according to the detection result, the dismounting position is determined; The up and down limit method detection comprises: In the state that the blast furnace production is not blown down, the two electrical limit switches on the encoder are removed; The distributor is operated in the field operation box to the machine position; The tilting is opened to the lower limit, and whether the lower part of the tilting mechanism is normal is judged; The tilting is opened to the upper limit, and whether the upper part of the tilting mechanism is normal is judged.

2. The top gear box alpha angle fault detection method of the bell-less furnace drive according to claim 1, wherein, When the encoder indication is not equal to the code disc indication, the star differential reducer and the gearbox are maintained, which comprises that when the encoder indication is greater than the code disc indication, the star differential reducer is maintained, and when the encoder indication is less than the code disc indication, the gearbox is maintained.

3. The top gear box alpha angle fault detection method of the bell-less furnace drive as claimed in claim 2 wherein, The tilting is opened to the lower limit, and whether the lower part of the tilting mechanism is normal is judged, which comprises that when the tilting is opened to the lower limit 15°, the tilting is stopped, and after the tilting motor is stopped, the tilting is continued to be opened downward, if the tilting angle is stopped at 13°, it is indicated that the lower part of the tilting transmission mechanism is normal, and if the tilting is continued to be opened after the tilting is opened to 13° and the mechanical limit does not stop, it is indicated that the lower part of the tilting transmission mechanism is faulty.

4. The top drive gear box alpha angle fault detection method of claim 3, wherein, The lower part of the tilting transmission mechanism is faulty, which is that the tilting rotating ring and the driven wheel on the tilting reducer are misaligned.

5. The top drive gear box alpha angle fault detection method of claim 4, wherein, The tilting is opened to the upper limit, and whether the upper part of the tilting mechanism is normal is judged, which comprises that when the tilting is opened to the upper limit 50°, the tilting is stopped, and after the tilting motor is stopped, the tilting is continued to be opened upward, if the tilting angle is stopped at 53°, the mechanical limit works normally, and the upper part of the tilting transmission mechanism is normal, and if the tilting is continued to be opened after the tilting is opened to 53° and the mechanical limit does not stop, it is indicated that the upper part of the transmission mechanism is faulty.

6. The top drive gear box alpha angle fault detection method of claim 5, wherein, The upper part of the transmission mechanism is faulty, which is that the tilting reducer is damaged and the internal worm gear is damaged.

7. The top drive gear box alpha angle fault detection method of claim 6, wherein, Further comprising testing the current change of the tilting motor, when the current is increased or adjusted when the tilting is opened downward, the connecting rod executing mechanism is side turned over.

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