Lifting control device of oxygen lance

Abstract

The utility model provides a control lifting device of oxygen lance, including oxygen lance, lift platform, thread lift mechanism and transmission mechanism, lift platform is provided on lift mechanism and is used for installing oxygen lance, lift mechanism includes threaded rod and slider, lift mechanism is connected with transmission mechanism through threaded rod, and the transmission mechanism is connected with the transmission mechanism through the slider. According to the utility model, when the requirement on the position of the oxygen lance in the steelmaking production process is effectively met, the oxygen lance can be driven to move up and down through the kinetic energy transmission mode among the threaded rod, the sliding block and the transmission device, so that the oxygen lance can be driven to move up and down; the risk that in the prior art, connecting bolts among a steel cable, a connecting base and a reel body are broken is completely eradicated.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen lance lifting control, in particular to a control lifting device for an oxygen lance. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] The oxygen lance is a key piece of process equipment in oxygen converter steelmaking. Its performance directly impacts the smelting results and blowing time, thus influencing steel quality and yield. The lance's structure and performance largely determine the effectiveness of oxygen steelmaking. In particular, the oxygen lance plays a dominant role in top-blown oxygen converter steelmaking. It controls crucial process factors such as the contact area between the oxygen jet and the melt pool, the oxygen jet's penetration depth, the melt pool's agitation, the degree of elemental oxidation, the melt pool's heating rate, and the iron oxide content in the slag. Consequently, it plays a crucial role in slagging, spattering, and impurity removal, converter steelmaking endpoint control, and various technical and economic indicators of steelmaking. The oxygen lance consists of three components: the nozzle, the lance body, and the lance tail.

[0004] The nozzle is made of industrial pure copper and is the most important part of the oxygen lance. When the oxygen lance is adapted for use with the converter, a support frame is required to support and fix the oxygen lance. Therefore, there is a problem that the position of the oxygen lance is fixed, which makes it inconvenient for the user to quickly adjust the position of the oxygen lance according to the use requirements of the oxygen lance, thereby reducing the convenience and adaptability of the oxygen lance.

[0005] In addition, the inventors also found that the existing oxygen lance lifting device raises and lowers the oxygen lance by winding a steel cable through a driving mechanism, such as Chinese patent invention patent CN219385209U, which discloses an oxygen lance lifting and lateral movement device, which uses a steel cable to drive the oxygen lance to move up and down. Patent CN2016104004301 also discloses an oxygen lance lifting device. The driving mechanism in the device drives the connecting seat to rotate and synchronously drives the drum to rotate. After the drum rotates, it will retract or lower the wire rope upward, and synchronously drive the lance lifting trolley to move up and down, thereby realizing the lifting and lowering of the oxygen lance. Since the connecting bolts connecting the connecting seat and the drum body for connecting the oxygen lance reel are very easy to loosen or break during use, and there is also a risk of the steel cable breaking during the lifting process, once the connecting bolts or steel cable break or loosen and fall off, the oxygen lance will fall down with the lifting trolley, which poses a great safety hazard in production safety and has low operational stability and safety of use. Utility Model Content

[0006] In response to the risk of breakage of the connecting bolts between the steel cable, the connecting seat and the drum body in the prior art, the utility model provides a control and lifting device for the oxygen lance. On the basis of meeting the use requirements of the oxygen lance in the steelmaking production process, the kinetic energy transmission method between the threaded rod + slider + transmission device is used to improve the operating stability and safety of the entire device.

[0007] To achieve the above objectives, one or more embodiments of the present invention provide the following technical solutions: a control and lifting device for an oxygen lance, comprising an oxygen lance, a lifting platform, a threaded lifting mechanism, and a transmission mechanism.

[0008] The lifting platform is arranged on the lifting mechanism and is used for installing the oxygen gun.

[0009] The threaded lifting mechanism includes a threaded rod and a slider, the threaded rod includes a first threaded rod and a second threaded rod, the slider includes a first slider and a second slider, the first slider is installed on the first threaded rod, and the second slider is installed on the second threaded rod. The first slider and the second slider are connected to the lifting platform, and the slider drives the lifting platform to move up and down.

[0010] The transmission mechanism is arranged at the bottom of the thread lifting mechanism and is used to transmit external kinetic energy to the thread lifting mechanism.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The utility model can transfer external kinetic energy to the threaded lifting device through the transmission mechanism. The threaded rod of the threaded lifting device is connected to the lifting mechanism installed with the oxygen gun through a slider. Under the action of external power, the threaded rod will drive the slider and the lifting platform to rise and fall synchronously during the rotation process. Since the utility model abandons the traditional lifting control method of winding steel cable + oxygen gun lifting trolley, while meeting the position requirement of the oxygen gun in the steelmaking production process, the kinetic energy transmission between the threaded rod + slider + transmission device can completely avoid the risk of breakage of the connecting bolts between the steel cable, the connecting seat and the reel body.

[0013] 2. By fixing the oxygen lance in the groove on the top of the support block, and fixing the support block to the placement plate through several bolts, the combination of the support block groove + placement plate can ensure that the oxygen lance in the groove remains stable during the movement of the lifting platform, thereby improving the stability of the oxygen lance and the convenience of assembly.

[0014] 3. Since the base is provided with a cover plate, a connecting plate and a rotating rod, the front side of the cover plate can be quickly assisted in positioning by rotating the rotating rod to avoid the cover plate and the base from falling off. In addition, the drive mechanism and the transmission mechanism can be promptly repaired by removing the cover plate, making installation and maintenance more convenient.

[0015] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0017] Figure 1 2. It is a schematic diagram of the three-dimensional structure of the oxygen lance control lifting device of this embodiment;

[0018] Figure 2 This is a schematic diagram of the internal connections of the base of the oxygen lance control lifting device of this embodiment;

[0019] Figure 3 2. This is a schematic diagram of the transmission mechanism connection of the oxygen lance control lifting device of this embodiment;

[0020] Figure 4 Schematic diagram of the connection between the transmission mechanism and the connecting gear disc of the oxygen lance control lifting device of this embodiment.

[0021] In the figure: In the figure: 1. Oxygen gun; 101. Gas nozzle; 102. Gas input port; 2. Lifting platform; 201. Support block; 202. Placement plate; 203. Protrusion; 3. Threaded lifting mechanism; 301. Threaded rod; 301-1. First threaded rod; 301-2. Second threaded rod; 302. Slider; 302-1. First slider; 302-2. Second slider; 4. Fixed frame; 5. Base; 6. Fixed block; 7. Transmission mechanism; 701. Chain; 702. Transmission gear disc; 703. Connecting gear disc; 704. Limit block; 8. Rotating motor; 9. Mounting bracket; 10. Cover plate; 11. Connecting plate; 12. Turning rod. DETAILED DESCRIPTION

[0022] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention.

[0024] In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0025] Example

[0026] This embodiment provides a control and lifting device for an oxygen lance, such as Figure 1 As shown, it includes an oxygen gun 1, a lifting platform 2, a threaded lifting mechanism 3 and a transmission mechanism 7;

[0027] Since the oxygen lance is highly dependent on the steel smelting process in the oxidation converter, the oxygen lance needs to frequently change its position according to actual needs. Therefore, in this embodiment, the oxygen lance 1 is fixedly installed on the lifting platform. The lifting platform 2 includes a support block 201 and a placement plate 202. The oxygen lance 1 is fixedly installed on the top of the support block, and the two sides of the support block are fixed to the upper surface of the placement plate by a number of bolts.

[0028] Specifically, the lifting platform 2 includes a support block 201 and a placement plate 202. The support block is a rectangular body. The top of the support block 201 is in the shape of a U-shaped groove. The lower end of the oxygen gun is fixed in the U-shaped groove of the support block. The support block 201 is provided with a number of bolt holes at the edges of both sides near the U-shaped groove. The bolt holes on each side are distributed in a straight line. Each bolt hole passes through the support block. The inner side of the bolt hole has an internal thread. The number of bolt holes on both sides is the same and the positions of the left and right bolt holes are opposite to each other. The placement plate 202 is set at the lower end of the support block. It uses a rectangular body with protrusions 203 on both sides. The same number of internal threaded holes are also provided on the placement plate 202 at positions opposite to the several bolt holes of the support plate. The internal threaded holes on the placement plate have a certain depth and penetrate the placement plate. The staff can screw the bolts with external threads into the internal threaded holes of the placement plate through the bolt holes of the support block, and fix the support plate in the middle position of the upper surface of the placement plate. The oxygen gun is firmly installed on the lifting plate through the internal and external threads of the bolts, bolt holes and internal threaded holes. The bolt connection can also facilitate the disassembly and maintenance of professional maintenance personnel in the later stage, thereby improving the assembly convenience and use stability of the oxygen gun.

[0029] like Figure 1 As shown, the oxygen lance 1 is provided with a gas nozzle 101 and a gas input port 102. There are two gas nozzles 101 and two gas input ports 102. The gas input port is located at the upper end of the oxygen lance 1. The two gas input ports are distributed front and back along the U-shaped groove of the support block. The gas nozzle is located at the front end of the oxygen lance, and the two gas nozzles are distributed up and down.

[0030] In order to better drive the lifting and lowering of the lifting platform (oxygen gun), there are protrusions 203 on both sides of the placement plate. This embodiment uses the protrusions on the left and right sides of the placement plate to connect with the threaded lifting mechanism. The protrusions 203 on the left and right sides are located in the middle position of the two sides of the placement plate, and the protrusions adopt a rectangular structure.

[0031] A fixed frame 4 is provided at the rear of the left and right sides of the placement plate. The fixed frame 4 is a vertical rectangular structure with an opening on one side. The open side of the fixed frame faces the lifting platform and is opposite to the protrusion of the lifting platform. The interior of the fixed frame is a hollow structure, and a fixed block is installed at the top of the inner cavity of the fixed frame. The fixed frame adopts a rectangular hollow structure.

[0032] like Figure 2 and Figure 3 As shown, the threaded lifting mechanism 3 includes a threaded rod 301 and a slider 302. The threaded rod 301 includes a first threaded rod 301-1 and a second threaded rod 301-2. The slider 302 includes a first slider 302-1 and a second slider 302-2. The first threaded rod 301-1 and the second threaded rod 301-2 are respectively installed inside a fixed frame 4 with an opening on one side. The first slider 302-1 is installed on the first threaded rod, and the second slider 302-2 is installed on the second threaded rod. The first slider and the second slider are connected to the lifting platform. The slider drives the lifting platform to move up and down, and the protrusions are fixedly connected to the first slider and the second slider of the lifting mechanism respectively.

[0033] Specifically, the outer sides of the first threaded rod 301-1 and the second threaded rod 301-2 are provided with external threads, and one end of the first slider 302-1 and the second slider 302-2 are respectively fixedly connected to the protruding ends on both sides of the placement plate 202, that is, the protruding ends close to the opening side of the fixed frame, and the other ends of the first slider and the second slider are provided with cylindrical through holes with internal threads, and the first threaded rod and the second threaded rod respectively pass through the cylindrical through holes of their corresponding sliders and are connected by internal and external threads, and the first threaded rod and the second threaded rod are respectively movably connected to the fixed block 6 fixed at the top inside the fixed frame through a rotating shaft.

[0034] By providing the threaded lifting mechanism 3, the threaded rod can quickly drive the oxygen lance 1 to move up and down through the slider, thereby improving the lifting convenience of the oxygen lance and ultimately enhancing the adaptability of the oxygen lance.

[0035] like Figure 2 As shown, a base 5 is provided at the lower end of the fixed frame, and the base adopts a hollow rectangular structure. The bottom end of the fixed frame 4 is fixed to the upper surface of the base. Specifically, on both sides of the upper surface of the base 5, there is an opening on one side of the base, and the orientation of the open side is the same as that of the fixed frame. A cover plate 10 is provided at the open end. The cover plate 10 adopts a rectangular plate, and the open side of the base can be blocked by the rectangular cover plate. Two connecting plates 11 are installed on both sides of the base that are perpendicular to and opposite to the surface where the open side is located. A socket is provided on the end of each connecting plate away from the cover plate. The front end of each connecting plate is movably connected to a rotating rod 12 through a damping shaft, and the cover plate can be fixed by rotating the rotating rod.

[0036] Specifically, in this embodiment, connecting plates are provided on both sides of the base, and the number of connecting plates on each side is selected to be 2. The 2 connecting plates on each side are distributed in the upper and lower positions. Since one side of the rotating rod is connected to the connecting plate through the damping rotating shaft, and the other side is fitted with the front side of the cover, the staff can manually rotate the rotating rod to make the rotating rod itself move in a circular trajectory, and the cover can be disassembled at any time by rotating the rotating rod.

[0037] like Figure 4 As shown, in order to provide rotational power to the first threaded rod and the second threaded rod of the threaded lifting mechanism, this embodiment is further provided with a transmission mechanism 7, which is arranged at the bottom of the threaded lifting mechanism and is used to transmit external kinetic energy to the threaded lifting mechanism. Specifically, the transmission mechanism is located at the upper end of the inner cavity of the base, and includes a chain 701, a transmission gear disc 702, a connecting gear disc 703 and a limit block 704. The transmission gear disc 702 and the connecting gear disc 703 are both movably installed inside the chain. The lower ends of the first and second threaded rods pass through the base and are fixedly connected to the connecting gear discs 703 located on both sides of the chain 701. The transmission gear disc 702 is arranged in the middle position of the chain, and the transmission gear disc and the connecting gear disc are respectively engaged with the chain. The transmission gear disc and the connecting gear disc are both provided with ring gears. The transmission gear disc and the connecting gear disc are respectively engaged with the chain through the ring gear. The limit block is arranged on the outside of the chain. The limit block adopts an annular hollow structure. The chain is in the middle position of the limit block, and the chain is wrapped in the middle with the help of the limit block.

[0038] The rear side of the cover plate contacts the front end of the limit block, and the end of the limit block 704 close to the cover plate contacts the rear end of the cover plate. The position of the cover plate 10 can be limited by the limit block 704, avoiding misalignment between the cover plate and the base during docking.

[0039] In this embodiment, a connecting plate, a rotating rod and a limit block are provided in the control lifting device structure of the oxygen gun. The rotating rod and the connecting plate can be used to quickly assist in positioning the front side of the cover plate, and the annular limit block can be used to achieve the technical effect of assisting the front side of the cover plate. On the basis of avoiding misalignment during the docking process of the cover plate and the base, the cover plate and the base can be prevented from falling off during normal production activities.

[0040] like Figure 4As shown, in this embodiment, the external power comes from the driving mechanism, and the driving mechanism transmits the power to the threaded lifting mechanism through the transmission mechanism, and the threaded lifting mechanism drives the slider to move up and down; the driving mechanism includes a rotating motor 8 and a mounting bracket 9, and the mounting bracket is arranged at the bottom end of the base. The rotating motor 8 is installed inside the mounting bracket 9, and the upper end of the rotating motor is fixedly connected to the transmission gear disk 702 located in the middle of the chain. The mounting bracket 9 is connected to the bottom of the inner cavity of the base by bolts. By setting up the mounting bracket, it is convenient for technicians to quickly disassemble and assemble the rotating motor 8, and the mounting bracket can also ensure the stability of the rotating motor during operation.

[0041] The specific model and specifications of the rotating motor 8 proposed in the present invention need to be selected and determined according to the actual specifications of the device. The specific selection calculation method, line connection method and control method all adopt the existing technology in this field, so they will not be described in detail.

[0042] The rotating motor drives the transmission gear disc to rotate by outputting power. Since the transmission gear disc is located in the middle of the annular limit block, the transmission gear disc and the annular limit hole are in meshing connection with the gear and chain, and the two constitute the transmission mechanism of the conveyor belt. The transmission gear disc in the self-rotating state will drive the annular limit block to rotate, thereby driving the connecting gear discs installed on both sides of the annular limit block to rotate. The driving mechanism transmits power to the first and second threaded rods of the threaded lifting mechanism through the transmission mechanism. The first and second threaded rods in the rotating state will drive their corresponding sliders to move up and down, thereby realizing a safe and smooth change of the oxygen gun position.

[0043] The method of using the control lifting device of the oxygen lance described in this embodiment includes the following steps:

[0044] 1. Fix the oxygen lance 1 in the top groove of the support block 201, and fix the support block to the middle position of the upper surface of the placement plate 202 with several bolts to complete the assembly of the oxygen lance 1 and the lifting platform 2.

[0045] 2. After the oxygen gun and the lifting platform are assembled, the rotating motor 8 is started. The rotating motor 8 drives the chain 701 to rotate through the transmission gear plate 702. During the rotation process, the chain can drive the connecting gear plate 703 to rotate through the connection point engaged with the connecting gear plate 703, thereby transmitting power to the first and second threaded rods of the threaded lifting mechanism through the transmission mechanism.

[0046] 3. The first and second threaded rods rotate under the drive of the transmission mechanism, and when the threaded rods rotate, they can drive the placement plate 202 to move through the slider, thereby achieving the effect of quickly adjusting the position of the oxygen gun 1;

[0047] 4. After the oxygen gun 1 is adjusted to the appropriate position, the rotating motor can be turned off, and the support and positioning of the oxygen gun can be achieved through the threaded cooperation between the slider and the threaded rod.

[0048] The steps involved in the apparatuses of Examples 2, 3, and 4 above correspond to those of Method Example 1. For detailed implementations, please refer to the relevant description of Example 1. The term "computer-readable storage medium" should be understood to mean a single medium or multiple media containing one or more instruction sets; it should also be understood to include any medium capable of storing, encoding, or carrying an instruction set for execution by a processor and causing the processor to perform any method of the present invention.

[0049] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A control and lifting device for an oxygen lance, characterized in that: It includes oxygen gun, lifting platform, thread lifting mechanism and transmission mechanism; The lifting platform is provided on the lifting mechanism and is used for installing the oxygen lance; The threaded lifting mechanism includes a threaded rod and a slider, the threaded rod includes a first threaded rod and a second threaded rod, the slider includes a first slider and a second slider, the first threaded rod is mounted on the first slider, the second threaded rod is mounted on the second slider, the first slider and the second slider are connected to the lifting platform, and the slider drives the lifting platform to move up and down; The transmission mechanism is arranged at the bottom of the thread lifting mechanism and is used to transmit external kinetic energy to the thread lifting mechanism.

2. The oxygen lance control and lifting device according to claim 1, characterized in that: The lifting platform comprises a support block and a placement plate. An oxygen gun is fixedly installed on the top of the support block, and two sides of the support block are fixed to the upper surface of the placement plate by a plurality of bolts.

3. The oxygen lance control and lifting device according to claim 1, characterized in that: The first threaded rod and the second threaded rod are respectively installed in a fixing frame with an opening on one side, the opening side of the fixing frame faces the lifting platform, and the bottom end of the fixing frame is fixed to the upper surface of the base.

4. The oxygen lance control and lifting device according to claim 3, characterized in that: The first threaded rod and the second threaded rod are movably connected to a fixing block fixed at the top end of the fixing frame through a rotating shaft.

5. The oxygen lance control and lifting device according to claim 2, characterized in that: There are protrusions on both sides of the placement plate, and the protrusions are fixedly connected to the first slider and the second slider of the lifting mechanism respectively.

6. The oxygen lance control and lifting device according to claim 1, characterized in that: The transmission mechanism is located at the upper end of the inner cavity of the base, and includes a chain, a transmission gear plate, a connecting gear plate and a limit block. The transmission gear plate and the connecting gear plate are both movably installed inside the chain, and the transmission gear plate and the connecting gear plate are respectively engaged with the chain. The limit block is arranged on the outside of the chain; The lower ends of the first and second threaded rods penetrate into the base and are fixedly connected to the connecting toothed discs located on both sides of the chain.

7. The oxygen lance control and lifting device according to claim 1, characterized in that: It also includes a driving mechanism, which transmits power to the thread lifting mechanism through the transmission mechanism, and the thread lifting mechanism drives the slider to move up and down.

8. The oxygen lance control and lifting device according to claim 7, characterized in that: The driving mechanism includes a rotating motor and a mounting bracket, wherein the mounting bracket is arranged at the bottom end inside the base, the rotating motor is installed inside the mounting bracket, and the upper end of the rotating motor is fixedly connected to the transmission gear disc located in the middle of the chain.

9. The oxygen lance control and lifting device according to claim 3, characterized in that: There is an opening on one side of the base, and the orientation of the open side is the same as that of the fixed frame. A cover plate is provided at the open end to seal the open side. Two connecting plates are installed on the two opposite sides of the base that are perpendicular to the surface where the open side is located. The front end of each connecting plate is movably connected to a rotating rod through a damping rotating shaft, and the cover plate can be fixed by rotating the rotating rod.

10. The oxygen lance control and lifting device according to claim 9, characterized in that: The rear side of the cover plate contacts the front end of the limiting block.

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