Oxygen lance lifting device

Abstract

The utility model provides an oxygen lance lifting device, which is arranged above an oxygen inlet of a converter, and comprises a bracket, an oxygen lance lifting device and an oxygen lance lifting device, the oxygen lance trolley is connected to the support, and an oxygen lance capable of moving along the longitudinal track is arranged on the oxygen lance trolley; the lifting driving mechanism is provided with a winding drum arranged at the end part of the bracket, a driving rope group and a counterweight rope group which are used for driving the winding drum to rotate in opposite directions are wound on the winding drum, the free end of the driving rope group is connected with the oxygen lance, and the free end of the counterweight rope group is connected with a counterweight block. The oxygen lance lifting device can solve the problems that an existing oxygen lance lifting device is complex in accident lifting structure and unstable in function.

Description

Technical Field

[0001] The utility model relates to the technical field of converter smelting equipment, in particular to an oxygen lance lifting device. Background Art

[0002] The smelting of the converter depends on the oxygen lance to spray oxygen into the converter at high speed, and react chemically with the impurity elements in the molten iron to obtain the required qualified molten steel. Usually, each converter is equipped with two oxygen lances online, one of which is in the production position and the other is in the standby position. They are installed on their respective lifting trolleys, and the oxygen lances can be quickly replaced by the transverse trolley. During production, the oxygen lance lifting trolley in the production position inserts the oxygen lance into the converter along the lifting guide rail for oxygen blowing smelting. After the smelting is completed, the oxygen lance trolley rises and lifts the oxygen lance to the top of the converter mouth for standby use.

[0003] The existing oxygen lance lifting system has a complex accident lifting structure and requires regular inspection and testing. In the event of an accident, the accident drive may still not work, posing a hidden danger to production. On the other hand, the main motor drive load is relatively large, the motor capacity is relatively large, and the power consumption is relatively high. Utility Model Content

[0004] The utility model aims to provide an oxygen lance lifting device to solve the problems of complex accident lifting structure and unstable action of the current oxygen lance lifting device.

[0005] The utility model provides an oxygen lance lifting device, which is arranged above the oxygen inlet of a converter and comprises:

[0006] a bracket having a longitudinal track;

[0007] At least one oxygen lance trolley connected to the bracket, the oxygen lance trolley being provided with an oxygen lance movable along the longitudinal track;

[0008] The lifting drive mechanism has a drum arranged at the end of the bracket, on which a driving rope group and a counterweight rope group are wound to drive the drum to rotate in opposite directions, the free end of the driving rope group is connected to the oxygen gun, and the free end of the counterweight rope group is connected to a counterweight block.

[0009] In a preferred embodiment of the present invention, the oxygen lance trolley has a lifting module that can move along the longitudinal track, and the oxygen lance is connected to the lifting module.

[0010] In a preferred embodiment of the present invention, the oxygen gun trolley has a first fixed pulley group, the bracket is provided with a second fixed pulley, and the free end of the driving rope group is connected to the lifting module after passing through the second fixed pulley and the first fixed pulley group in sequence.

[0011] In a preferred embodiment of the present invention, the driving rope group includes a first rope group and a second rope group, one end of the first rope group is wound on the drum, and the other end thereof is connected to a movable pulley, one end of the second rope group is fixed on the bracket, and the other end thereof is connected to the lifting module after passing through the movable pulley, the second fixed pulley and the first fixed pulley group in sequence.

[0012] In a preferred embodiment of the present invention, a third fixed pulley is further provided on the bracket, and the free end of the first rope group is connected to the movable pulley after passing around the third fixed pulley.

[0013] In a preferred embodiment of the present invention, the reel is connected to a drive motor, and the driving force provided by the drive motor can overcome the difference between the gravity of the counterweight block and the gravity of the lifting module to drive the oxygen gun to rise or fall.

[0014] In a preferred embodiment of the present invention, the lifting drive mechanism has a brake capable of locking the reel.

[0015] In a preferred embodiment of the present invention, the bracket is further provided with a transverse track perpendicular to the longitudinal track, and the oxygen lance trolley comprises a transverse movement module, and the transverse movement module is slidably connected to the transverse track.

[0016] In a preferred embodiment of the present invention, the extension direction of the driving rope set is parallel to the extension direction of the transverse track.

[0017] In a preferred embodiment of the present invention, the oxygen lance trolley further comprises a transverse motor for driving the trolley to move along the transverse track.

[0018] Compared with the prior art, the utility model has the following characteristics and advantages:

[0019] 1. The driving device (reel and driving motor) for lifting the oxygen lance is removed from the oxygen lance trolley and installed on the bracket, which simplifies the structural design of the oxygen lance trolley.

[0020] 2. The traction force of the counterweight is used as the power for accident driving, eliminating the accident driving motor or pneumatic motor, simplifying the equipment structure, reducing the inspection and maintenance workload, and eliminating production safety hazards.

[0021] 3. Due to the setting of the counterweight, the drive motor only needs to overcome the difference between the counterweight block and the load of the oxygen gun trolley to achieve the lifting of the oxygen gun, which reduces the load of the drive motor, reduces the capacity of the drive motor, and reduces the power consumption during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0023] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0024] Figure 1 This is a front view structural diagram of the oxygen lance lifting device of the utility model;

[0025] Figure 2 It is a side structural schematic diagram of the oxygen lance lifting device of the utility model.

[0026] Description of Figure Numbers:

[0027] 10. Bracket; 11. Longitudinal track; 12. Transverse track; 13. First crossbeam; 14. Crossbeam; 15. Third crossbeam;

[0028] 20. Oxygen gun trolley; 21. Oxygen gun; 22. Lifting module; 23. Transverse movement module;

[0029] 30. Drum; 31. Driving rope group; 311. First rope group; 312. Second rope group; 32. Counterweight rope group; 33. Counterweight block

[0030] 40. First fixed pulley set; 41. Second fixed pulley; 42. Third fixed pulley; 43. Moving pulley;

[0031] 50. Converter oxygen inlet. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0033] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] like Figure 1 and Figure 2 As shown, the utility model provides an oxygen lance lifting device, which is arranged above the oxygen inlet 50 of the converter, and comprises: a bracket 10, which has a longitudinal track 11; at least one oxygen lance trolley 20, which is connected to the bracket 10, and the oxygen lance trolley 20 is provided with an oxygen lance 21 that can move along the longitudinal track 11; a lifting drive mechanism, which has a drum 30 arranged at the end of the bracket 10, and the drum 30 is wound with a driving rope group 31 and a counterweight rope group 32 that drive it to rotate in opposite directions, the free end of the driving rope group 31 is connected to the oxygen lance 21, and the free end of the counterweight rope group 32 is connected to a counterweight block 33.

[0036] The oxygen lance lifting device of the utility model removes the driving device (reel 30 and driving motor) for driving the oxygen lance 21 to lift from the oxygen lance trolley 20 and installs it on the bracket 10, thereby simplifying the structural design of the oxygen lance trolley 20.

[0037] The oxygen lance lifting device of the utility model utilizes the traction force of the counterweight block 33 as the power for accident driving, eliminates the accident driving motor or pneumatic motor, simplifies the equipment structure, reduces the inspection and maintenance workload, and eliminates production safety hazards.

[0038] The oxygen lance lifting device described in the utility model is arranged above the oxygen inlet 50 of the converter, and is used to inject oxygen into the converter. Since the converter needs to rotate during a working cycle, the oxygen lance 21 arranged above the oxygen inlet 50 of the converter usually has a lifting function. When it is necessary to charge oxygen into the converter, the oxygen lance 21 descends and extends into the oxygen inlet 50 of the converter. When the oxygen charging is completed, the oxygen lance 21 rises and exits from the oxygen inlet 50 of the converter.

[0039] Specifically, Figure 1 and Figure 2 As shown, the bracket 10 is located above the converter, and all components constituting the oxygen lance lifting device are installed on the bracket 10; the bracket 10 is composed of a plurality of beams arranged in parallel and fixed together. In this embodiment, the bracket 10 includes a first beam 13, a second beam 14 and a third beam 15 arranged at different heights. A longitudinal track 11 is provided on the bracket 10, and the extension direction of the longitudinal track 11 is perpendicular to the extension direction of the beams. The setting position of the longitudinal track 11 corresponds to the position of the converter oxygen inlet 50, and the oxygen lance 21 can move up and down along the longitudinal track 11 to complete the oxygenation operation of the converter; in this embodiment, the longitudinal track 11 is connected between the second beam 14 and the third beam 15.

[0040] The bracket 10 is provided with an oxygen gun trolley 20, and the fixed position of the oxygen gun trolley 20 on the bracket 10 corresponds to the position of the longitudinal track 11. The oxygen gun trolley 20 is provided with an oxygen gun 21, and the oxygen gun 21 is connected to an oxygen source through a pipeline. The oxygen gun 21 can be detached from the oxygen gun trolley 20 and enter the longitudinal track 11 so as to move up and down in the longitudinal track 11. In this embodiment, the oxygen gun trolley 20 is connected between the first cross beam 13 and the second cross beam 14, and the top of the longitudinal track 11 is connected to the oxygen gun trolley 20 and is located on the same vertical line as the oxygen gun trolley 20.

[0041] Furthermore, the oxygen gun lifting device also has a lifting drive mechanism for driving the oxygen gun 21 to lift and lower. The drum 30 of the lifting drive mechanism is arranged at the end of the bracket 10. The counterweight rope group 32 with a counterweight block 33 at one end is wound on the drum 30. The driving rope group 31 connected to the oxygen gun 21 at one end is also wound on the drum 30. The counterweight block 33 and the oxygen gun 21 are respectively located on opposite sides of the drum 30. The counterweight rope group 32 and the driving rope group 31 can respectively drive the drum 30 to rotate in opposite directions. In this embodiment, the drum 30 is fixed at one end of the first crossbeam 13, one end of the driving rope group 31 is connected to the oxygen gun 21, and the other end is wound on the drum 30 after passing the pulley group and changing direction; one end of the counterweight rope group 32 is connected to the counterweight block 33, and the other end is directly wound on the drum 30. The counterweight rope group 32 extends in the vertical direction. When the drum 30 rotates, driven by the driving rope group 31 and the counterweight rope group 32, the oxygen lance 21 descends while the counterweight 33 rises, or the oxygen lance 21 rises while the counterweight 33 descends.

[0042] The structure and technical effects of the preferred embodiment of the oxygen lance lifting device described in the utility model will be further described below.

[0043] According to one embodiment of the utility model, Figure 1 and Figure 2 As shown, the oxygen lance trolley 20 has a lifting module 22 that can move along the longitudinal track 11 , and the oxygen lance 21 is connected to the lifting module 22 .

[0044] In order to realize the lifting and lowering of the oxygen gun 21, the oxygen gun trolley 20 in the utility model adopts a modular design, which has a lifting module 22 that can be detached from the oxygen gun trolley 20, and the oxygen gun 21 connected to the lifting module 22 can be detached from the oxygen gun trolley 20 together with the lifting module 22 and enter the longitudinal track 11. The lifting module 22 can slide up and down in the longitudinal track 11 and thereby drive the oxygen gun 21 to extend into the converter oxygen inlet 50 or exit the converter oxygen inlet 50.

[0045] According to one embodiment of the utility model, Figure 1 and Figure 2 As shown, the oxygen lance trolley 20 is provided with a first fixed pulley set 40, the bracket 10 is provided with a second fixed pulley 41, and the free end of the driving rope set 31 passes through the second fixed pulley 41 and the first fixed pulley set 40 in sequence and is connected to the lifting module 22. The driving rope set 31 is redirected and guided by the first fixed pulley set 40 and the second fixed pulley set 41 to ensure that it can smoothly drive the oxygen lance 21 to move along the longitudinal track 11 to achieve ascent and descent.

[0046] Specifically, Figure 2 As shown, the first fixed pulley group 40 is located at the top of the oxygen gun trolley 20, and includes two fixed pulleys perpendicular to each other. The first fixed pulley group 40 can guide and reverse the driving rope group 31. One end of the driving rope group 31 is connected to the lifting module 22 on the oxygen gun trolley 20, and the other end will change from extending in the vertical direction to extending in the horizontal direction after bypassing the first fixed pulley group 40. The second fixed pulley 41 is fixed on the first crossbeam 13 and is arranged adjacent to the drum 30. The driving rope group 31 bypassing the first fixed pulley group 40 bypasses the second fixed pulley 41 again and is wound on the drum 30.

[0047] According to one embodiment of the utility model, Figure 1 and Figure 2 As shown, the driving rope group 31 includes a first rope group 311 and a second rope group 312. One end of the first rope group 311 is wound on the drum 30, and the other end thereof is connected to a movable pulley 43. One end of the second rope group 312 is fixed on the bracket 10, and the other end thereof is connected to the lifting module 22 after passing through the movable pulley 43, the second fixed pulley 41 and the first fixed pulley group 40 in sequence.

[0048] The counterweight 33 and the oxygen lance 21 are respectively located on both sides of the drum 30. The rotation of the drum 30 drives one of them to rise and the other to fall. When the oxygen lance 21 is working, the height of its rise or fall is relatively large. Therefore, in order to avoid a large height change of the counterweight 33 with the oxygen lance 21, a movable pulley 43 is set in the driving rope group 31 to reduce the lifting height of the counterweight 33 with the oxygen lance trolley 20.

[0049] Preferably, the bracket 10 is further provided with a third fixed pulley 42 , and the free end of the first rope group 311 passes around the third fixed pulley 42 and is connected to the movable pulley 43 .

[0050] Specifically, Figure 1 As shown, the third fixed pulley 42 is fixed on the third beam 15, one end of the second rope group 312 is connected to the lifting module 22 of the oxygen gun trolley 20, and the other end passes around the first fixed pulley group 40 and then extends from the vertical direction to the horizontal direction, and then passes around the second fixed pulley 41 and then extends from the horizontal direction to the vertical downward direction, and then passes around the movable pulley 43 and then extends from the vertical downward direction to the vertical upward direction, and is fixed on the first beam 13 after passing around the movable pulley 43; one end of the first rope group 311 is connected to the movable pulley 43, and the other end passes around the third fixed pulley 42 and then is wound on the drum 30, and the first rope group 311 extends in the vertical direction.

[0051] According to one embodiment of the present invention, the reel 30 is connected to a drive motor, and the driving force provided by the drive motor can overcome the difference between the gravity of the counterweight block 33 and the gravity of the lifting module 22 to drive the oxygen gun 21 to rise or fall.

[0052] The drive motor drives the reel 30 to rotate; without considering the movable pulley 43, in this embodiment, the gravity of the counterweight block 33 is only slightly greater than the gravity of the lifting module 22 and the oxygen lance 21. When the drive motor is turned off, the counterweight block 33 will drive the oxygen lance 21 to the highest position (that is, withdraw from the converter oxygen inlet 50). When it is necessary to charge the converter with oxygen, the drive motor only needs to provide a smaller driving force to overcome the difference between the gravity of the counterweight block 33 and the gravity of the lifting module 22 to drive the oxygen lance 21 to descend, thereby reducing the load of the drive motor, reducing the capacity of the drive motor, and reducing the power consumption during use.

[0053] According to one embodiment of the utility model, the lifting drive mechanism has a brake that can lock the reel 30. In this embodiment, when the drive motor drives the reel 30 to rotate and then drives the oxygen lance 21 to descend to the right position, the oxygen lance 21 needs to stay in the converter oxygen inlet 50 for a period of time to perform oxygenation operation. At this time, the brake on the lifting drive mechanism is opened to lock the reel 30. In an accident condition, the brake will fail due to power failure. At this time, the oxygen lance 21 on the lifting module 22 can be driven by the counterweight block 33 to withdraw from the converter oxygen inlet 50, avoiding production accidents caused by the oxygen lance 21 extending into the converter oxygen inlet 50 for a long time.

[0054] According to one embodiment of the utility model, Figure 1 and Figure 2 As shown, the bracket 10 is further provided with a transverse track 12 perpendicular to the longitudinal track 11 , and the oxygen lance trolley 20 includes a transverse movement module 23 , which is slidably connected to the transverse track 12 .

[0055] In actual production, the converter is usually equipped with two oxygen lances 21 online, one of which is in the production position and the other is in the standby position. Figure 1 As shown, two oxygen gun trolleys 20 are provided on the bracket 10, one of which is located directly above the oxygen inlet 50 of the converter, and the other is in a standby position. In order to realize the switching of the oxygen gun 21, the modularly designed oxygen gun trolley 20 also includes a transverse movement module 23, and the transverse movement module 23 and the lifting module 22 constitute the oxygen gun trolley 20. The transverse track 12 is formed on the first crossbeam 13 and the second crossbeam 14, and the extension direction of the transverse track 12 is the same as the extension direction of the crossbeam. The transverse movement module 23 can drive the lifting module 22 and the oxygen gun 21 to slide along the transverse track 12 to realize the switching of the oxygen gun 21.

[0056] According to one embodiment of the utility model, Figure 1 and Figure 2 As shown, the extension direction of the driving rope group 31 (the second rope group 312) is parallel to the extension direction of the transverse track 12. The extension direction of the transverse track 12 is in the horizontal direction, so the extension direction of the driving rope group 31 located above the first crossbeam 13 is also in the horizontal direction, that is, the first fixed pulley group 40 and the second fixed pulley 41 are located at the same height, thereby preventing the driving rope group 31 from slipping.

[0057] According to one embodiment of the utility model, the oxygen lance trolley 20 also has a lateral movement motor driving it to move along the lateral track 12. During the switching lateral movement of the oxygen lance trolley 20, the oxygen lance 21 is not allowed to be raised or lowered and the oxygen lance 21 is in the highest position, and the lateral movement motor is turned on to switch the oxygen lance 21.

[0058] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific embodiment of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. An oxygen lance lifting device, arranged above the oxygen inlet of a converter, characterized in that: include: a bracket having a longitudinal track; At least one oxygen lance trolley connected to the bracket, the oxygen lance trolley being provided with an oxygen lance movable along the longitudinal track; The lifting drive mechanism has a drum arranged at the end of the bracket, on which a driving rope group and a counterweight rope group are wound to drive the drum to rotate in opposite directions, the free end of the driving rope group is connected to the oxygen gun, and the free end of the counterweight rope group is connected to a counterweight block.

2. The oxygen lance lifting device according to claim 1, characterized in that: The oxygen lance trolley has a lifting module that can move along the longitudinal track, and the oxygen lance is connected to the lifting module.

3. The oxygen lance lifting device according to claim 2, characterized in that: The oxygen lance trolley is provided with a first fixed pulley block, the bracket is provided with a second fixed pulley, and the free end of the driving rope group is connected to the lifting module after passing through the second fixed pulley and the first fixed pulley block in sequence.

4. The oxygen lance lifting device according to claim 3, characterized in that: The driving rope group includes a first rope group and a second rope group, one end of the first rope group is wound on the drum, and the other end thereof is connected to a movable pulley, one end of the second rope group is fixed on the bracket, and the other end thereof is connected to the lifting module after passing through the movable pulley, the second fixed pulley and the first fixed pulley group in sequence.

5. The oxygen lance lifting device according to claim 4, characterized in that: The bracket is also provided with a third fixed pulley, and the free end of the first rope group is connected to the movable pulley after passing around the third fixed pulley.

6. The oxygen lance lifting device according to claim 2, characterized in that: The reel is connected to a driving motor, and the driving force provided by the driving motor can overcome the difference between the gravity of the counterweight block and the gravity of the lifting module to drive the oxygen gun to rise or fall.

7. The oxygen lance lifting device according to claim 1, characterized in that: The lifting drive mechanism has a brake capable of locking the reel.

8. The oxygen lance lifting device according to claim 1 or 2, characterized in that: The bracket is also provided with a transverse track perpendicular to the longitudinal track, and the oxygen gun trolley comprises a transverse movement module, and the transverse movement module is slidably connected to the transverse track.

9. The oxygen lance lifting device according to claim 8, characterized in that: The extending direction of the driving rope group is parallel to the extending direction of the transverse track.

10. The oxygen lance lifting device according to claim 8, characterized in that: The oxygen lance trolley also has a transverse motor for driving it to move along the transverse track.

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