Ladle crane and converter system

Abstract

The application discloses an oxygen lance hoisting frame and a converter system, and relates to the technical field of tilting and transporting of slender parts. The oxygen lance hoisting frame comprises a vertical frame body, a hoisting connecting part, a retractable clamping part, a limiting suspension part and a rotating wheel. The hoisting connecting part is arranged at the top end of the vertical frame body and is used for hoisting the oxygen lance hoisting frame. The retractable clamping part is provided with a retractable clamping groove and a locking assembly. The locking assembly is arranged at the opening end of the retractable clamping groove. The limiting suspension part is arranged on the side wall of the vertical frame body and is not higher than the retractable clamping part, avoids the position directly below the retractable clamping groove, and is used for being clamped on a clamping and hoisting platform to hoist the oxygen lance hoisting frame. The rotating wheel is rotatably arranged at the bottom end of the vertical frame body and is used for rolling contact with the ground. The application can save labor to tilt the oxygen lance from a vertical state to a horizontal state and can conveniently realize the taking and placing of the oxygen lance in the hoisting space of the furnace.

Description

Technical Field

[0001] This application relates to the field of tilting and transporting slender components, and more specifically to oxygen lance hoisting frames and converter systems. Background Technology

[0002] In existing technologies, steelmaking is often achieved through a converter system. A typical converter system includes an oxygen lance maintenance unit, a converter, a ground rail assembly, a furnace mouth platform, an upper frame, and an overhead hoisting device. The space between the upper frame and the furnace mouth platform is the upper hoisting space, and the space between the furnace mouth platform and the ground is the ground space. The ground rail assembly is located on the ground and is used to transport the oxygen lance from the ground space to or from the oxygen lance maintenance unit. The overhead hoisting device is located on the upper frame and is used to hoist the oxygen lance between the ground space and the upper hoisting space through the hoisting holes in the furnace mouth platform, and also to hoist the oxygen lance between the upper hoisting space and the converter.

[0003] The existing converter system has the following two problems. First, when the oxygen lance is lowered to the ground through the lifting hole, how can it be tilted from a vertical to a horizontal position with less effort? Second, how can the oxygen lance be conveniently accessed and placed in the furnace's overhead lifting space? Utility Model Content

[0004] In view of this, in order to solve the above-mentioned technical problems, this application provides an oxygen lance hoisting frame and a converter system.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is to provide an oxygen lance lifting frame, which includes: Stand body; The hoisting connection is located at the top of the vertical frame body and is used to suspend the oxygen lance hoisting frame. The retractable clamping part is provided with a retractable clamping groove and a locking component; the locking component is provided at the open end of the retractable clamping groove so that when the open end of the retractable clamping groove is locked, the retractable clamping groove clamps the oxygen lance and when the open end of the retractable clamping groove is released, the retractable clamping groove releases the oxygen lance. The limiting suspension part is located on the side wall of the vertical frame body, avoiding the direct below the retractable clamping slot and not higher than the retractable clamping part. It is used to hook onto the clamping and hanging platform to suspend the oxygen lance hoisting frame. And a rotating wheel, which is rotatably mounted at the bottom of the vertical frame body, for rolling contact with the ground.

[0006] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide a converter system, which includes an oxygen lance maintenance device, a converter, a lower hoisting device, a furnace mouth platform layer, a positioning and hanging platform, a furnace upper frame layer, and an upper hoisting device; the space between the furnace upper frame layer and the furnace mouth platform layer is the furnace upper hoisting space, and the space between the furnace mouth platform layer and the ground is the ground space. The lower hoisting device is located below the furnace mouth platform layer and is used to hoist the oxygen lance hoisting frame in the ground space to the oxygen lance maintenance device or to lift it away from the oxygen lance maintenance device. The upper hoisting device is installed on the furnace frame layer and is used to hoist the oxygen lance hoisting frame between the ground space and the positioning hoisting platform through the hoisting holes of the furnace mouth platform layer, as well as to hoist the oxygen lance between the oxygen lance hoisting frame on the positioning hoisting platform and the converter. The positioning and hanging platform is equipped with a vertical frame storage slot, which is used to store a section of the vertical frame body below the limiting suspension part, so that the limiting suspension part can be hooked onto the positioning and hanging platform.

[0007] Beneficial Effects: Unlike existing technologies, this application has at least the following two beneficial effects. Firstly, it allows for a more effortless tilting of the oxygen lance from a vertical to a horizontal position. Specifically, as the lifting device lowers the oxygen lance mounting frame to the ground, the rotating wheels roll on the ground, guiding the frame to tilt to a horizontal position, thus causing the oxygen lance mounted on it to follow suit. Secondly, it facilitates the easy placement and removal of the oxygen lance within the furnace's lifting space. Specifically, the vertical frame storage slot stores a section of the vertical frame body below the limiting suspension part, allowing the limiting suspension part to be easily attached to the positioning and hanging platform. This facilitates the operation of the locking components by the staff on the positioning and hanging platform, enabling the locking components to lock or release the opening end of the retractable clamping slot, thereby controlling the locking or releasing of the oxygen lance in the retractable clamping slot, so as to realize the storage and retrieval of the oxygen lance on the oxygen lance hoisting frame. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the oxygen lance hoisting frame of this application; Figure 2 This is a schematic diagram of the area where the lifting connection part of the oxygen lance lifting frame of this application is located; Figure 3 This is a schematic diagram of the area where the retractable clamping part and the limiting suspension part of the oxygen lance hoisting frame of this application are located; Figure 4 Figure 3 Enlarged schematic diagram of region A in the middle; Figure 5 This is a schematic diagram of the area where the locking and limiting seat of the oxygen lance hoisting frame of this application is located; Figure 6 This is a schematic diagram of the area where the open-type limiting seat of the oxygen lance hoisting frame of this application is located; Figure 7 This is a schematic diagram of the area where the rotating wheel and the sleeve-type limiting seat of the oxygen lance hoisting frame of this application are located; Figure 8 This is a schematic diagram of one state of the converter system of this application. Figure 8 The oxygen lance is inserted into the converter; Figure 9 yes Figure 8 Enlarged schematic diagram of region B in the middle; Figure 10 This is a schematic diagram of one state of the converter system of this application. Figure 10 The medium oxygen lance is mounted on the oxygen lance hoisting frame; Figure 11 This is a schematic diagram of one state of the converter system of this application. Figure 11 The oxygen lance was lowered to the ground level. Figure 12 This is a schematic diagram of one state of the patent system of this application. Figure 12 The oxygen lance is lifted using a medium-to-lower hoisting device; Figure 13 This is a top view of the oxygen lance being lifted by the lower hoisting device.

[0009] Explanation of reference numerals in the attached figures: Converter system 10; Furnace hoisting space 11; Ground space 12; Ground 13; Oxygen lance maintenance device 100; Converter 200; Furnace opening 201; Lower hoisting device 300; Main beam 310; End beam 320; End crane 330; Lower hoisting car 340; First flexible connector 341; Furnace opening platform layer 400; Hoisting hole 401; Positioning and hanging platform 500; Vertical frame storage slot 501; Furnace frame layer 600; Upper hoisting device 700; Second flexible connector 710; Oxygen lance 900; Oxygen lance hoisting frame 800; vertical frame body 810; hoisting connection part 820; retractable clamping part 830; limiting suspension part 840; rotating wheel 850; sleeve-type limiting seat 860; open-type limiting seat 870; rotating wheel mounting seat 880; clamp-type limiting seat 890. First sidewall 811; connecting wall 812; second sidewall 813; first strip groove 814; second strip groove 815; hoisting connection hole 821; connecting shaft 822; connecting plate 823; retractable clamping groove 831; locking assembly 832; locking bolt 8321; baffle 8322; locking nut 8323; screw storage groove 8324; second hinge shaft 8325; first swing arm 833; second swing arm 834; arc plate 1; outer stiffener 2; first hinge shaft 835; second arc surface 836; plate structure 837; clamping part fixing seat 838; hanging plate 841; upper side stiffener 842; sleeve hole 861; limiting opening 871; first arc surface 872; limiting slot 891; clamping block 892; limiting plate 893; supporting stiffener 894; third arc surface 895. Detailed Implementation

[0010] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0011] Furthermore, all directional indicators (such as up, down, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0012] Please see Figure 8 As shown, the converter system 10 of this application includes an oxygen lance maintenance device 100, a converter 200, a lower hoisting device 300, a furnace mouth platform layer 400, a positioning and hanging platform 500, a furnace upper frame layer 600, and an upper hoisting device 700. The positioning and hanging platform 500 is provided with a vertical frame storage slot 501. It should be noted that the furnace mouth platform layer 400 can be a platform located on the outer periphery of the furnace mouth 201 of the converter 200, but is not limited to this.

[0013] The space between the furnace frame layer 600 and the furnace mouth platform layer 400 is designated as the furnace hoisting space 11, and the space between the furnace mouth platform layer 400 and the ground 13 is designated as the ground space 12.

[0014] The lower hoisting device 300 is located below the furnace mouth platform layer 400 and is used to hoist the oxygen lance hoisting frame 800 in the ground space 12 to or from the oxygen lance maintenance device 100.

[0015] The upper hoisting device 700 is installed on the furnace frame layer 600 and is used to hoist the oxygen lance hoisting frame 800 between the ground space 12 and the positioning hoisting platform 500 through the hoisting hole 401 of the furnace mouth platform layer 400, and to hoist the oxygen lance 900 between the oxygen lance hoisting frame 800 on the positioning hoisting platform 500 and the converter 200.

[0016] Specifically, in combination Figure 8 See Figures 1-7 As shown, the oxygen lance hoisting frame 800 includes a vertical frame body 810, a hoisting connection part 820, a retractable clamping part 830, a limiting suspension part 840, and a rotating wheel 850.

[0017] A hoisting connection 820 is located at the top of the vertical frame body 810 for the upper hoisting device 700 to suspend the oxygen lance hoisting frame 800. A retractable clamping part 830 is provided with a retractable clamping groove 831 and a locking assembly 832. The locking assembly 832 is located at the open end of the retractable clamping groove 831, so that when the open end of the retractable clamping groove 831 is locked, the retractable clamping groove 831 clamps the oxygen lance 900, and when the open end of the retractable clamping groove 831 is released, the retractable clamping groove 831 releases the oxygen lance 900. A limiting suspension part 840 is located on the side wall of the vertical frame body 810, avoiding direct below the retractable clamping groove 831 and not higher than the retractable clamping part 830, for attaching to the positioning hoisting platform 500 to suspend the oxygen lance hoisting frame 800. The rotating wheel 850 is rotatably mounted at the bottom end of the vertical frame body 810 for rolling contact with the ground 13.

[0018] The above method has at least two beneficial effects. First, it makes it easier to tilt the oxygen lance 900 from a vertical to a horizontal position. Specifically, when the upper hoisting device 700 lowers the oxygen lance hoisting frame 800 to the ground space 12 and it contacts the ground 13, as the upper hoisting device 700 continues to lower the oxygen lance hoisting frame 800 to the ground 13, the rotating wheel 850 can roll on the ground 13 to guide the oxygen lance hoisting frame 800 to tilt to a horizontal position, thereby allowing the oxygen lance 900, which is mounted on the oxygen lance hoisting frame 800, to tilt to a horizontal position along with the oxygen lance hoisting frame 800. Second, it facilitates the easy placement and removal of the oxygen lance 900 in the furnace hoisting space 11. Specifically, the vertical frame storage slot 501 stores a portion of the vertical frame body 810 below the limiting suspension part 840, allowing the limiting suspension part 840 to be easily attached to the positioning and hanging platform 500. This facilitates the operation of the locking component 832 by the staff on the positioning and hanging platform 500, enabling the locking component 832 to lock or release the opening end of the retractable clamping slot 831, thereby controlling the locking or releasing of the oxygen lance 900 on the retractable clamping slot 831, so as to realize the storage and retrieval of the oxygen lance 900 on the oxygen lance hoisting frame 800.

[0019] In particular, combined Figure 8and Figure 12 See Figure 13 Compared to the existing technology where ground-mounted vehicle track components require a certain amount of ground space, this application utilizes a lower hoisting device 300 to lift the oxygen lance mounting frame 800 from the ground space 12, thus freeing up sufficient ground space 13 below the lower hoisting device 300 for use as a passageway for transport devices, including but not limited to forklifts or trucks. When the oxygen lance 900 is not requiring maintenance, the oxygen lance mounting frame 800 is suspended and hooked onto the mounting platform 500, facilitating the transport device's access to and from the freed-up ground space below the lower hoisting device 300.

[0020] It should be noted that the oxygen lance lifting frame 800 can also be used in other alternative examples to assemble other slender components besides the oxygen lance 900, so as to facilitate the tilting and transportation of these other slender components. For the sake of clarity in the subsequent embodiments of this application, the use of the oxygen lance lifting frame 800 for assembling the oxygen lance 900 will be used as an example for illustration.

[0021] Optionally, such as Figure 10 As shown, the areas where the lower hoisting device 300 and the oxygen lance maintenance device 100 are located are on opposite sides of the area where the converter 200 is located. In this way, when the oxygen lance hoisting frame 800 is lowered to the ground space 12 through the hoisting hole 401, it can be prevented from bumping into the converter 200, the lower hoisting device 300, or the oxygen lance maintenance device 100 during the process of lowering the oxygen lance hoisting frame 800 to the ground 13.

[0022] Optionally, the hoisting device 700 can be found in the relevant records of the existing converter system 10, and will not be described in detail here.

[0023] For example, in one instance, the structure of the overhead hoisting device 700 can be adopted from the furnace top crane in Chinese patent application document CN2017101000445.

[0024] For example, in another example, the structure of the lifting device 700 can adopt the transverse lifting trolley in Chinese patent application document CN2022105678326.

[0025] Combination Figure 8 and Figure 12 See Figure 13As shown, the lower hoisting device 300 may include a main beam 310, an end beam 320, an end trolley 330, and a lower hoisting carriage 340. The main beam 310 and the end beam 320 are suspended and perpendicular to each other. The end trolley 330 is movably mounted on the end beam 320 so as to be able to move along the end beam 320. The two ends of the main beam 310 are respectively movably connected to their respective end beams 320 through the end trolleys 330. The lower hoisting carriage 340 is movably mounted on the main beam 310 so as to be able to move along the main beam 310 and hoist the oxygen lance hoisting frame 800. Multiple main beams 310 are arranged along the extension direction of the end beams 320, and each main beam 310 is correspondingly provided with a lower hoisting carriage 340.

[0026] Combination Figure 8 and Figure 12 See Figure 13 As shown, specifically, the lower hoisting trolleys 340 on different main beams 310 can directly or indirectly lift the oxygen lance mounting frame 800. Indirect lifting of the oxygen lance mounting frame 800 can be achieved by the lower hoisting trolley 340 connecting to the oxygen lance 900 via a first flexible connector 341, so that the oxygen lance 900 is lifted together with the oxygen lance mounting frame 800. Direct lifting of the oxygen lance mounting frame 800 can also be achieved by the lower hoisting trolley 340 connecting to the oxygen lance mounting frame 800 via the first flexible connector 341, so that the oxygen lance 900 on the oxygen lance mounting frame 800 is lifted together with the oxygen lance 900. The first flexible connector 341 includes, but is not limited to, a flexible rope, a wire rope, or a chain.

[0027] For example, and not as a limitation, any main beam 310, the lower hoist 340 on the main beam 310, the end trolleys 330 at both ends of the main beam 310, and the end beams 320 at both ends of the main beam 310 can constitute a single beam crane (not shown in the figure).

[0028] Specifically, compared to the ground area required by ground-mounted vehicle track assemblies in the prior art, the main beam 310 in this application is suspended, so that sufficient ground space 13 can be left below the main beam 310 for use as a passageway for transport devices. These transport devices include, but are not limited to, forklifts or trucks.

[0029] Optionally, combined Figure 8 See Figures 1-7 As shown, the hoisting connection part 820 may be provided with a hoisting connection hole 821 for connection with the second flexible connector 710 of the upper hoisting device 700. The second flexible connector 710 includes, but is not limited to, a flexible rope, a wire rope, or a chain.

[0030] Optionally, combined Figure 8 See Figures 1-7As shown, the hoisting connection 820 may include a connecting shaft 822 and a connecting plate 823. The connecting plates 823 are respectively disposed at both ends of the connecting shaft 822, and the connecting plates 823 are respectively hinged to the connecting shaft 822 and the vertical frame body 810. A hoisting connection hole 821 is formed between the connecting plates 823 at both ends of the connecting shaft 822. Thus, the bottom end of the second flexible connector 710 can pass through the hoisting connection hole 821 through a hook (not shown) to hook the connecting shaft 822.

[0031] Optionally, combined Figure 8 See Figures 1-7 As shown, the oxygen lance hoisting frame 800 includes a sleeve-type limiting seat 860, which is disposed on the side wall of the vertical frame body 810. The sleeve-type limiting seat 860 is provided with a socket hole 861 for inserting the oxygen lance 900 and radially limiting the oxygen lance 900. By using the socket hole 861 to radially limit the oxygen lance 900, the radial sway of the oxygen lance 900 can be further suppressed when the oxygen lance 900 is assembled in the oxygen lance hoisting frame 800.

[0032] Optionally, combined Figure 8 See Figures 1-7 As shown, the oxygen lance hoisting frame 800 includes an open-type limiting seat 870, which is disposed on the side wall of the vertical frame body 810.

[0033] The open-type limiting seat 870 is provided with a limiting opening 871, which retracts from the outside to the inside. The limiting opening 871 is used to house the oxygen lance 900 and to radially limit the oxygen lance 900.

[0034] In this way, compared to the socket-type limiting seat 860, it is more convenient and faster for the oxygen lance 900 to enter and exit the open-type limiting seat 870. Thus, by setting the open-type limiting seat 870, both the ease of assembling and disassembling the oxygen lance 900 on the oxygen lance lifting frame 800 and the radial limiting performance of the oxygen lance lifting frame 800 on the oxygen lance 900 can be considered.

[0035] For example, rather than limiting, in combination Figure 12 See Figures 1-7 As shown, when the oxygen lance hoisting frame 800 is in a horizontal state, the retractable clamping part 830, the sleeve-type limiting seat 860, and the open-type limiting seat 870 can together radially limit the oxygen lance 900, so as to firmly fix the oxygen lance 900 to the oxygen lance hoisting frame 800 and prevent the oxygen lance 900 from falling off the oxygen lance hoisting frame 800.

[0036] Optionally, combined Figure 12 See Figures 1-7As shown, the two side walls of the limiting opening 871 are formed as first arc surfaces 872 that are adapted to the side walls of the oxygen lance 900. In this way, the first arc surfaces 872 on both sides of the limiting opening 871 form surface contact with the oxygen lance 900, which can better limit the radial movement of the oxygen lance 900.

[0037] Optionally, combined Figure 8 See Figures 1-7 As shown, multiple open-type retaining seats 870 are arranged sequentially and spaced apart from top to bottom on the vertical frame body 810, but this is not the only example. In other alternative examples, the open-type retaining seat 870 may also be a single unit.

[0038] Optionally, combined Figure 8 See Figures 1-7 As shown, the oxygen lance hoisting frame 800 includes a locking type limiting seat 890, which is disposed on the side wall of the vertical frame body 810.

[0039] The locking type limiting seat 890 is provided with a limiting slot 891. The limiting slot 891 is used to receive the oxygen lance 900 and to radially limit the oxygen lance 900. The two side walls of the limiting slot 891 are provided with locking blocks 892 protruding from the opening end of the limiting slot 891 for engaging with the oxygen lance 900.

[0040] By using the above method, the locking block 892 cooperates with the oxygen lance 900 to prevent the oxygen lance 900 from disengaging from the opening end of the limiting slot 891, thereby providing a more secure radial limit for the oxygen lance 900. When the retractable clamp 831 releases the oxygen lance 900, the oxygen lance 900 can disengage from or pass through the limiting slot 891 by moving along the extension direction of the vertical frame body 810.

[0041] Optionally, the inner sidewalls of each side of the limiting slot 891 and the corresponding locking block 892 form a third arc surface 895 that is adapted to the sidewall of the oxygen lance 900, but not limited thereto.

[0042] Optionally, combined Figure 8 See Figures 1-7 As shown, the vertical frame body 810 includes a first side wall 811, a connecting wall 812, and a second side wall 813. The first side wall 811, the connecting wall 812, and the second side wall 813 are all formed as walls distributed vertically.

[0043] The first sidewall 811 and the second sidewall 813 are arranged at intervals relative to each other. The connecting wall 812 is arranged between the first sidewall 811 and the second sidewall 813 and connects the first sidewall 811 and the second sidewall 813 respectively, so as to divide the space between the first sidewall 811 and the second sidewall 813 into a first strip groove 814 and a second strip groove 815 separated by the connecting wall 812.

[0044] The retractable clamping part 830, the latching limit seat 890, the open limit seat 870 and the sleeve limit seat 860 are arranged in sequence from top to bottom and are disposed on the second side wall 813.

[0045] Through the above method, the connecting structure formed by the first side wall 811, the connecting wall 812, and the second side wall 813 has strong rigidity, making the vertical frame body 810 less prone to deformation. Optionally, the first side wall 811, the connecting wall 812, and the second side wall 813 can be connected in an H-shape, but are not limited thereto.

[0046] Optionally, combined Figure 8 See Figures 1-7 As shown, the limiting suspension part 840 includes a mounting plate 841 and an upper side stiffener 842. The mounting plate 841 intersects with the first side wall 811, the connecting wall 812, and the second side wall 813. The upper side stiffener 842 is disposed on the upper side of the mounting plate 841 and intersects with both the upper side stiffener 841 and the connecting wall 812. Thus, by using the mounting plate 841 to engage with the positioning suspension platform 500, when the section of the vertical frame body 810 below the mounting plate 841 is stored in the vertical frame storage slot 501, the oxygen lance lifting frame 800 is prevented from falling, keeping the oxygen lance lifting frame 800 suspended. The upper side stiffener 842 can increase the rigidity of the mounting plate 841, avoiding or reducing deformation of the mounting plate 841.

[0047] Optionally, combined Figure 8 See Figures 1-7 As shown, the locking type limiting seat 890 includes a limiting plate 893 and a supporting rib plate 894.

[0048] The limiting plate 893 intersects with the first side wall 811, the connecting wall 812, and the second side wall 813, and protrudes outward from the second side wall 813. The limiting groove 891 is provided on the portion of the limiting plate 893 that protrudes outward from the second side wall 813. The supporting ribs 894 are provided on both sides of the limiting groove 891, and the supporting ribs 894 intersect with the second side wall 813 and the limiting plate 893, respectively.

[0049] By using the above method, the mechanical strength of the locking type limiting seat 890 can be improved by using the limiting plate 893 and the supporting rib plate 894 together, thereby preventing or reducing the deformation of the locking type limiting seat 890 in the vertical direction.

[0050] Optionally, combined Figure 8 See Figures 1-7 As shown, the retractable clamping part 830 includes a first swing arm 833 and a second swing arm 834. The first swing arm 833 and the second swing arm 834 are respectively hinged to the second side wall 813 through a first hinge shaft 835 so as to form a retractable clamping groove 831.

[0051] The inner walls of both the first swing arm 833 and the second swing arm 834 are provided with a second arc surface 836 that is adapted to the side wall of the oxygen lance 900. The locking assembly 832 includes a locking bolt 8321, the head of which is movably connected to the outer end of the first swing arm 833, and the thread of the locking bolt 8321 is threadedly connected to the outer end of the second swing arm 834 to lock the first swing arm 833 and the second swing arm 834.

[0052] In the above manner, the operator manipulates the locking assembly 832 to tighten or loosen the threaded connection between the screw of the locking bolt 8321 and the outer end of the second swing arm 834, thereby locking or loosening the first swing arm 833 and the second swing arm 834. When the first swing arm 833 and the second swing arm 834 are locked, the retractable clamping slot is secured. When the first swing arm 833 and the second swing arm 834 are released, the retractable clamping slot 831 can be released.

[0053] Optionally, combined Figure 8 See Figures 1-7 As shown, the locking assembly 832 includes a baffle 8322 and a locking nut 8323. The baffle 8322 is detachably engaged with the outer end of the second swing arm 834 on the side opposite to the first swing arm 833. The thread of the locking bolt 8321 passes through the baffle 8322 and is threadedly connected to the locking nut 8323 to lock the first swing arm 833 and the second swing arm 834.

[0054] The head end of the locking bolt 8321 is hinged to the outer end of the first swing arm 833 via the second hinge shaft 8325, so that when the locking nut 8323 loosens the baffle 8322, the locking bolt 8321 can swing relative to the second hinge shaft 8325, so that the screw of the locking bolt 8321 swings out of the screw receiving groove 8324 at the outer end of the second swing arm 834 or swings into the screw receiving groove 8324 at the outer end of the second swing arm 834.

[0055] In the above manner, when the locking nut 8323 loosens the baffle 8322, the locking bolt 8321 swings relative to the second connecting shaft, causing the screw of the locking bolt 8321 to swing out of the outer end of the second swing arm 834. This allows the first swing arm 833 and the second swing arm 834 to be manually pried apart to loosen the oxygen lance 900, so that the oxygen lance 900 can be detached from the oxygen lance hoisting frame 800 under the hoisting of the upper hoisting device 700.

[0056] Optionally, combined Figure 8 See Figures 1-7 As shown, the retractable clamping part 830 includes a clamping part fixing seat 838 formed by intersecting plate-like structures 837. Parts of the plate-like structures 837 of the clamping part fixing seat 838 intersect with the first side wall 811, the connecting wall 812, and the second side wall 813, respectively. The first swing arm 833 and the second swing arm 834 are respectively hinged to the clamping part fixing seat 838 via the first hinge shaft 835.

[0057] The first swing arm 833 and the second swing arm 834 both include an arc-shaped plate 1 and an outer rib plate 2. One end of the arc-shaped plate 1 is hinged to the fixed seat through a first hinge shaft 835. A second arc surface 836 is formed on the inner side of the arc-shaped plate 1, and the outer rib plate 2 protrudes out and is disposed on the outer side of the arc-shaped plate 1.

[0058] By means of the above method, the mechanical strength of the retractable clamping part 830 can be improved, and deformation of the retractable clamping part 830 in the vertical direction can be avoided or reduced.

[0059] For example, rather than limiting, in combination Figure 8 See Figures 1-7 As shown, the oxygen lance hoisting frame 800 includes a rotating wheel mounting base 880, which intersects with the first side wall 811, the connecting wall 812, and the second side wall 813, and is integrally formed with a sleeve-type limiting seat 860. Rotating wheels 850 are rotatably mounted on both sides of the rotating wheel mounting base 880. Thus, rotatably mounting the rotating wheels 850 on the rotating wheel mounting base 880 reduces or avoids wobbling of the rotating wheels 850 during rotation.

[0060] Optionally, combined Figure 8 See Figures 1-7 As shown, the rotating wheel mounting base 880, the sleeve-type limiting seat 860, the open-type limiting seat 870, the latching-type limiting seat 890, the retractable clamping part 830, and the vertical frame body 810 are integrally formed, but are not limited thereto. In other alternative examples, the rotating wheel mounting base 880, the sleeve-type limiting seat 860, the open-type limiting seat 870, the latching-type limiting seat 890, and the retractable clamping part 830 may be welded to the vertical frame body 810.

[0061] The following describes the hoisting process of the oxygen lance 900 in the converter system 10, mainly including steps 1 to 6.

[0062] See Figure 8 and Figure 10 As shown, in step 1: when the oxygen lance 900 needs to be maintained, the hoisting device 700 hoists the oxygen lance 900, which extends into the converter 200, to the oxygen lance hoisting frame 800 of the positioning and hanging platform 500.

[0063] Combination Figure 10 See Figures 1-7 As shown, in step 2: the workers on the clamping and hanging platform 500 operate the oxygen lance hoisting frame 800 and the oxygen lance 900, so that the oxygen lance 900 is respectively limited to the clamping type limiting seat 890, the open type limiting seat 870 and the sleeve type limiting seat 860, and a portion of the oxygen lance 900 is stored in the loosened retractable clamping groove 831.

[0064] Combination Figure 10 See Figures 1-7 As shown, in step 3: the operator on the clamping and hanging platform 500 operates the locking component 832 to lock the open end of the retractable clamping groove 831 so that the retractable clamping groove 831 clamps the oxygen lance 900, thereby assembling the oxygen lance 900 onto the oxygen lance hoisting frame 800.

[0065] Combination Figures 1-7 See Figure 10 and Figure 11 Step 4: The workers on the hoisting platform 500 disconnect the upper hoisting device 700 from the oxygen lance 900 and connect the upper hoisting device 700 to the hoisting connection part 820, so that the vertical frame body 810 of the oxygen lance hoisting frame 800 exits the vertical frame storage slot 501. The upper hoisting device 700 is used to lower the oxygen lance hoisting frame 800 to the ground space 12 through the hoisting hole 401.

[0066] Combination Figures 1-7 See Figure 11 and Figure 12 Step 5: The staff on the ground 13 adjust the position of the oxygen lance hoisting frame 800 so that when the rotating wheel 850 of the oxygen lance hoisting frame 800 contacts the ground 13, the rotating wheel 850 guides the bottom of the oxygen lance 900 hoisting gun to move towards the area below the lower hoisting device 300 so that the oxygen lance hoisting frame 800 tilts to a horizontal state.

[0067] Combination Figures 1-9 See Figure 12 Step 6: The workers on the ground 13 disconnect the upper hoisting device 700 from the hoisting connection part 820, and operate the lower hoisting device 300 to hoist the oxygen lance 900 and the oxygen lance hoisting frame 800 together to the oxygen lance maintenance device 100 for maintenance of the oxygen lance 900.

[0068] After repairing the oxygen lance 900, reverse steps 1 to 6 above to reposition the repaired oxygen lance 900 to the converter 200.

[0069] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. An oxygen lance hoisting frame, characterized in that, The oxygen lance hoisting frame includes: Stand body; A hoisting connection is provided at the top of the vertical frame body and is used to suspend the oxygen lance hoisting frame; The retractable clamping part is provided with a retractable clamping groove and a locking component; the locking component is provided at the open end of the retractable clamping groove so that when the open end of the retractable clamping groove is locked, the retractable clamping groove clamps the oxygen lance and when the open end of the retractable clamping groove is released, the retractable clamping groove releases the oxygen lance. The limiting suspension part is disposed on the side wall of the vertical frame body, avoiding the direct below the retractable clamping slot and not higher than the retractable clamping part, for attaching to the clamping and hanging platform to suspend the oxygen lance hoisting frame. And a rotating wheel, which is rotatably mounted at the bottom end of the vertical frame body, for rolling contact with the ground.

2. The oxygen lance hoisting frame according to claim 1, characterized in that, The oxygen lance hoisting frame includes a sleeve-type limiting seat, which is disposed on the side wall of the vertical frame body. The sleeve-type limiting seat is provided with a sleeve hole for inserting the oxygen lance and radially limiting the oxygen lance.

3. The oxygen lance hoisting frame according to claim 2, characterized in that, The oxygen lance hoisting frame includes an open-type limiting seat, which is disposed on the side wall of the vertical frame body; The open-type limiting seat is provided with a limiting opening that contracts from the outside in; the limiting opening is used to house the oxygen lance and to radially limit the oxygen lance.

4. The oxygen lance hoisting frame according to claim 3, characterized in that, The two side walls of the limiting opening are formed as a first arc surface adapted to the side wall of the oxygen lance.

5. The oxygen lance hoisting frame according to claim 3, characterized in that, The oxygen lance hoisting frame includes a locking type limiting seat, which is disposed on the side wall of the vertical frame body; The locking seat is provided with a locking groove, and the open end of the locking groove protrudes into the locking groove to provide a locking block for cooperating with the oxygen lance locking block; the locking groove is used to hold the oxygen lance and radially limit the oxygen lance.

6. The oxygen lance hoisting frame according to claim 5, characterized in that, The vertical frame body includes a first side wall, a connecting wall, and a second side wall; the first side wall, the connecting wall, and the second side wall are all formed as walls distributed vertically. The first sidewall and the second sidewall are spaced apart from each other, and the connecting wall is disposed between the first sidewall and the second sidewall and connects the first sidewall and the second sidewall respectively, so as to divide the space between the first sidewall and the second sidewall into a first strip groove and a second strip groove disposed between the connecting wall; The retractable clamping part, the latching limiting seat, the open limiting seat and the sleeve-type limiting seat are arranged in sequence from top to bottom and are disposed on the second side wall.

7. The oxygen lance hoisting frame according to claim 6, characterized in that, The locking type limiting seat includes: A limiting plate is respectively intersecting with the first sidewall, the connecting wall and the second sidewall and protruding outward from the second sidewall. The limiting slot is disposed on the portion of the limiting plate that protrudes outward from the second sidewall. And supporting ribs are provided on both sides of the limiting slot, and the supporting ribs are respectively intersecting with the second side wall and the limiting plate.

8. The oxygen lance hoisting frame according to claim 6, characterized in that, The retractable clamping part includes a first swing arm and a second swing arm. The first swing arm and the second swing arm are respectively hinged to the second side wall through a first hinge shaft so as to form the retractable clamping groove. The inner walls of both the first and second swing arms are provided with a second arc surface that is adapted to the side wall of the oxygen lance; the locking assembly includes a locking bolt, the head of which is movably connected to the outer end of the first swing arm, and the screw of which is threadedly connected to the outer end of the second swing arm to lock the first and second swing arms.

9. The oxygen lance hoisting frame according to claim 8, characterized in that, The locking assembly includes a baffle and a locking nut; the baffle is detachably engaged with the outer end of the second swing arm on the side opposite to the first swing arm; the screw of the locking bolt passes through the baffle and is threadedly connected to the locking nut to lock the first swing arm and the second swing arm. The head end of the locking bolt is hinged to the outer end of the first swing arm via a second hinge shaft, so that when the locking nut loosens the baffle, the locking bolt can swing relative to the second hinge shaft, causing the screw of the locking bolt to swing out of or into the screw storage groove at the outer end of the second swing arm.

10. A converter system, characterized in that, The converter system includes an oxygen lance maintenance device, a converter, a lower hoisting device, a furnace mouth platform layer, a positioning and hanging platform, a furnace upper frame layer, and an upper hoisting device; the space between the furnace upper frame layer and the furnace mouth platform layer is the furnace upper hoisting space, and the space between the furnace mouth platform layer and the ground is the ground space; The lower hoisting device is located below the furnace opening platform layer and is used to hoist the oxygen lance hoisting frame in the ground space to the oxygen lance maintenance device or to the oxygen lance maintenance device. The oxygen lance hoisting frame is the oxygen lance hoisting frame as described in any one of claims 1-9. The upper hoisting device is installed on the furnace frame layer and is used to hoist the oxygen lance hoisting frame between the ground space and the positioning hoisting platform through the hoisting hole of the furnace mouth platform layer, and to hoist the oxygen lance between the oxygen lance hoisting frame on the positioning hoisting platform and the converter. The positioning and hanging platform is provided with a vertical frame storage slot, which is used to store a portion of the vertical frame body below the limiting suspension part, so that the limiting suspension part can be hooked onto the positioning and hanging platform.

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