Movable dismounting device for small and medium sleeves of blast furnace

Abstract

The invention discloses a movable dismounting device for small sleeves in a blast furnace. The movable dismounting device comprises a bearing assembly capable of moving on a tuyere platform and a dismounting assembly fixedly assembled on the top of the bearing assembly. The bearing assembly is provided with a horizontal mounting plate, and the dismounting assembly is provided with a supporting seat, a baffle, a hydraulic jack and two hook rods. The supporting seat is fixedly assembled at the top of the horizontal mounting plate; the baffle is vertically fixed with the horizontal mounting plate; the bottom of the hydraulic jack abuts against the supporting base, and the top of the hydraulic jack abuts against the baffle. The baffle is provided with two first through holes, and the supporting base is provided with two second through holes. The rod body can rotate along the axes of the first through hole and the second through hole, the hook head and the tailstock are fixedly connected to the two ends of the rod body respectively, the tailstock is fixedly connected to the side, away from the hydraulic jack, of the baffle, and the distance between the two hook rods is equal to the shaft diameter of the side, away from the large blast furnace sleeve, of the small blast furnace sleeve to be disassembled. The device has the characteristics of short disassembly time, labor saving and difficulty in damaging the small and medium sleeves in the blast furnace.

Description

Technical Field

[0001] The present invention relates to the technical field of the disassembly of the middle and small sleeves of blast furnaces, and particularly to a movable disassembly device for the middle and small sleeves of blast furnaces. Background Art

[0002] As the core equipment for ironmaking, the stability and efficiency of the operation of a blast furnace are directly related to the quality and output of steel production. The tuyere, as a key component of the blast furnace, shoulders the important task of accurately delivering hot air and fuel into the furnace, and plays an indispensable role in maintaining the high-temperature smelting environment in the furnace. The tuyere area is usually composed of multiple levels of nested large sleeves, middle sleeves, and small sleeves that are respectively responsible for different cooling and structural support functions. The large sleeve is located on the outermost layer relative to the blast furnace and mainly plays a supporting and fixing role; the middle sleeve is located between the large sleeve and the small sleeve, and its function combines the spatial positioning of the auxiliary cooling water channel and the impact load buffering; the small sleeve is located on the innermost layer, directly contacts the high-temperature area, and is embedded with a spiral cooling water channel, which is the core component of the cooling system.

[0003] The large sleeve is usually fixedly connected to the tuyere flange interface reserved on the blast furnace wall by a high-strength bolt group in an embedded manner. The outer surfaces of the large sleeve and the middle sleeve, as well as the outer surfaces of the middle sleeve and the small sleeve, all adopt a tapered fit, and achieve a tight fit through the self-locking effect of the tapered surface. During the ironmaking process of the blast furnace, due to the erosion of the burden and the coal gas flow, or due to the long-term contact with the high-temperature area, the middle sleeve and the small sleeve are prone to damage and need to be disassembled for maintenance and repair. However, in the prior art, when replacing the middle and small sleeves of the tuyere, it is usually to use a slide hammer to hook the inner edge of the middle and small sleeves and use a sledgehammer to strike and disassemble, which requires the cooperation of multiple people, takes a long time, has a high risk, and during the striking process, due to the uncertainty of force control, it is extremely easy to cause additional damage to the middle and small sleeves. Summary of the Invention

[0004] Based on this, it is necessary to provide a movable disassembly device for the middle and small sleeves of a blast furnace in view of the above technical problems, which has the characteristics of short disassembly time, labor saving, stable disassembly force, and not easy to damage the middle and small sleeves of the blast furnace.

[0005] The present invention provides a movable disassembly device for the middle and small sleeves of a blast furnace, including a bearing assembly that can move on the tuyere platform and a disassembly assembly fixedly assembled on the top of the bearing assembly;

[0006] The bearing assembly is provided with a horizontal mounting plate, and the disassembly assembly is provided with a support seat, a baffle, a hydraulic jack, and two hook rods that can extend into the inner part of the middle and small sleeves of the blast furnace and hook the front sleeve edge;

[0007] The support seat is fixedly assembled on the top of the horizontal mounting plate, and the baffle is perpendicularly fixed to the horizontal mounting plate;

[0008] The hydraulic jack is fixedly connected to the horizontal mounting plate and is located between the support seat and the baffle. The supporting direction of the hydraulic jack is perpendicular to the baffle. The bottom of the hydraulic jack abuts against the support seat, and the top abuts against the baffle.

[0009] The baffle is provided with two first through holes whose axes are perpendicular to the baffle. The support seat is provided with two second through holes whose axes coincide with the axes of the two first through holes respectively. The distances from the two first through holes to the horizontal mounting plate are equal.

[0010] The hook rod is provided with a rod body that can rotate along the axes of the first through hole and the second through hole, and a hook head and a tail seat respectively fixedly connected to both ends of the rod body. The tail seat is fixedly connected to the side of the baffle away from the hydraulic jack. The rod bodies of the two hook rods respectively pass through a set of first through holes and second through holes with coincident axes. The distance between the two hook rods is equal to the shaft diameter on the side of the small sleeve of the blast furnace to be disassembled away from the large sleeve of the blast furnace.

[0011] Further, the hook head is plate-shaped. Define a plane passing through the axis of the rod body as the dividing plane. The hook head is located on one side of the dividing plane and is perpendicular to the dividing plane. The hook head is perpendicular to the axis of the hook rod.

[0012] Further, the support seat is an isosceles right trapezoidal cylindrical structure, and the length direction of the support seat is perpendicular to the axis of the rod body;

[0013] The side wall of the support seat close to the baffle is perpendicular to the horizontal mounting plate, and the side wall of the support seat away from the baffle is inclined towards the hook head, and the inclination angle is equal to the inclination angle of the blast furnace wall.

[0014] Further, two fixed pulley guide rails are respectively arranged at both ends of any one of the second through holes. The two fixed pulley guide rails are respectively arranged on the upper and lower sides of the second through hole. The fixed pulley guide rails are fixedly connected to the support seat through the guide rail mounting frame;

[0015] The rail surface of the fixed pulley guide rail is an arc-shaped curved surface, and the rail surface of the fixed pulley guide rail is in fitting contact with the rod body.

[0016] Further, a positioning and fixing member is arranged at one end of each second through hole close to the baffle. The positioning and fixing member is provided with a positioning nut and a Z-shaped anti-loosening screw. The positioning nut is fixedly connected to the side wall of the support arm, and the axis of the positioning nut is perpendicular to the horizontal mounting plate;

[0017] The Z-shaped anti-loosening screw is threadedly connected to the positioning nut.

[0018] Further, the tail seat is threadedly connected to the rod body.

[0019] Further, an L-shaped handle for rotating the hook rod is arranged on the side of the tail seat away from the rod body, and the L-shaped handle is fixedly connected to the tail seat.

[0020] Further, a counterweight rack for placing different counterweight blocks is arranged at one end of the bottom of the bearing assembly away from the hook head.

[0021] Further, the hydraulic jack is arranged between the two hook rods.

[0022] The beneficial effects of the present invention are as follows: By moving the disassembly component through the bearing component, the hook head of the hook rod enters the middle and small sleeves of the blast furnace from the outside of the tuyere and hooks the front sleeve edge. Then, the hydraulic jack is started to push the baffle plate. The baffle plate drives the entire hook rod to move away from the tuyere through the tail seat, thereby applying an outward pulling force to the middle and small sleeves of the blast furnace, realizing the disassembly of the middle and small sleeves of the blast furnace. The whole process saves manpower and operation time, and the force exerted by the hydraulic jack is continuous and stable, without causing additional damage to the middle and small sleeves of the blast furnace. Description of the Drawings

[0023] Figure 1 is a schematic diagram of the assembly relationship between the disassembly component and the horizontal mounting plate provided by the embodiment of the present invention;

[0024] Figure 2 is Figure 1 the top view structure diagram of

[0025] Figure 3 is a schematic diagram of the structure of the hook rod provided by the embodiment of the present invention;

[0026] Figure 4 is a schematic diagram of the assembly relationship between the support seat and the fixed pulley guide rail provided by the embodiment of the present invention;

[0027] Figure 5 is a schematic diagram of the structure of the positioning and fixing part provided by the embodiment of the present invention;

[0028] Figure 6 is a schematic diagram of the disassembly device for the middle and small sleeves of the blast furnace to disassemble the middle sleeve of the blast furnace provided by the embodiment of the present invention.

[0029] Description of the reference numerals: 100, horizontal mounting plate; 200, disassembly component; 210, support seat; 220, baffle plate; 230, hydraulic jack; 240, hook rod; 241, rod body; 242, hook head; 243, tail seat; 244, L-shaped handle; 300, fixed pulley guide rail; 310, guide rail mounting frame; 400, positioning and fixing part; 410, positioning nut; 420, Z-shaped stop screw; 500, moving wheel; 600, counterweight frame; 700, counterweight block; 800, locking wheel; 900, blast furnace wall; 910, large sleeve; 920, middle sleeve; 930, tuyere platform. Detailed Embodiments

[0030] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given with reference to the accompanying drawings.

[0031] It should be noted that in the description of the present invention, "upper", "lower", "top", "bottom", the orientation or positional relationship is based on the orientation or positional relationship shown in the attached drawings. It should be understood that these orientation terms are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention. Figure 1 In one embodiment, as shown in FIGS. and, the movable disassembly device for the small and medium-sized blast furnace tuyere sleeve in this embodiment includes a carrying component that can move on the tuyere platform 930 and a disassembly component 200 fixedly assembled on the top of the carrying component.

[0032] Specifically, the carrying component can be a transport vehicle driven by manpower or electricity, etc., which can carry the disassembly component 200 and move on the tuyere platform 930 to realize the movement of the disassembly component 200 in the axial direction of the small and medium-sized blast furnace tuyere sleeve. Figure 1 and Figure 2 In this embodiment, the carrying component is provided with a horizontal mounting plate 100, and the disassembly component 200 is provided with a support seat 210, a baffle 220, a hydraulic jack 230, and two hook rods 240 that can extend from the inside of the small and medium-sized blast furnace tuyere sleeve and hook the front sleeve edge.

[0033] Specifically, the side with a smaller shaft diameter of the small and medium-sized blast furnace tuyere sleeve is the front end of the small and medium-sized blast furnace tuyere sleeve, and the front sleeve edge of the small and medium-sized blast furnace tuyere sleeve refers to the front sleeve edge of the small and medium-sized blast furnace tuyere sleeve.

[0034] In this embodiment, the carrying component is provided with a horizontal mounting plate 100, and the disassembly component 200 is provided with a support seat 210, a baffle 220, a hydraulic jack 230, and two hook rods 240 that can extend from the inside of the small and medium-sized blast furnace tuyere sleeve and hook the front sleeve edge.

[0035] The side with a smaller shaft diameter of the small and medium-sized blast furnace tuyere sleeve is the front end of the small and medium-sized blast furnace tuyere sleeve, and the front sleeve edge of the small and medium-sized blast furnace tuyere sleeve refers to the front sleeve edge of the small and medium-sized blast furnace tuyere sleeve.

[0036] Specifically, the tabletop of the tuyere platform 930 is a horizontal tabletop, the horizontal mounting plate 100 is parallel to the tabletop of the tuyere platform 930, the two hook rods 240 are the same hook rods 240, and the function of the horizontal mounting plate 100 is to provide an installation tabletop for the disassembly component 200.

[0037] The support seat 210 is fixedly assembled on the top of the horizontal mounting plate 100, and the baffle 220 is perpendicularly fixed to the horizontal mounting plate 100; the hydraulic jack 230 is fixedly connected to the horizontal mounting plate 100, located between the support seat 210 and the baffle 220, the supporting direction of the hydraulic jack 230 is perpendicular to the baffle 220, the bottom of the hydraulic jack 230 abuts against the support seat 210, and the top abuts against the baffle 220. The hydraulic jack 230 is arranged between the two hook rods 240.

[0038] In this embodiment, the hydraulic jack 230 is preferably an electric hydraulic jack 230.

[0039] Specifically, the support base 210 is welded to the horizontal mounting plate 100. A mounting groove frame for the hydraulic jack 230 is provided at the top of the horizontal mounting plate 100. The hydraulic jack 230 is placed in the mounting groove frame. When the hydraulic jack 230 is activated, it can support the baffle 220 to move away from the support base 210.

[0040] In this embodiment, the baffle 220 is provided with two first through holes whose axes are perpendicular to the baffle 220. The support base 210 is provided with two second through holes that respectively coincide with the axes of the two first through holes. The distances from the two first through holes to the horizontal mounting plate 100 are equal.

[0041] As Figure 3 shown, the hook rod 240 is provided with a rod body 241 that can rotate along the axes of the first through hole and the second through hole, and a hook head 242 and a tail seat 243 that are respectively fixedly connected to both ends of the rod body 241. The tail seat 243 is fixedly connected to the side of the baffle 220 away from the hydraulic jack 230. The rod bodies 241 of the two hook rods 240 respectively pass through a set of first through holes and second through holes with coincident axes. The distance between the two hook rods 240 is equal to the shaft diameter of the small sleeve of the blast furnace to be disassembled on the side away from the large sleeve 910 of the blast furnace.

[0042] It should be noted that the distance between the two hook rods 240 can be specifically set according to the shaft diameter of the small sleeve of the blast furnace to be disassembled on the side away from the large sleeve 910 of the blast furnace.

[0043] Based on the description of the first through hole and the second through hole, it can be known that the four through holes in this embodiment are at the same height relative to the horizontal mounting plate 100, so the rod bodies 241 of the two hook rods 240 are parallel.

[0044] The tail seat 243 is arranged on the side of the baffle 220 away from the hydraulic jack 230. When the hydraulic jack 230 drives the baffle 220 to move, after the baffle 220 abuts against the tail seat 243, it will drive the tail seat 243 to move away from the support base 210, that is, move towards the outside of the tuyere. When the rod body 241 is rotated to make the hook head 242 hook the front sleeve edge of the small sleeve of the blast furnace, the hydraulic jack 230 is activated to indirectly move the tail seat 243 towards the outside of the tuyere. At this time, the hook head 242 will apply a continuous and stable pulling force towards the outside of the tuyere to the front sleeve edge, and thus the small sleeve of the blast furnace can be disassembled from the tapered mating structure. Using the hydraulic jack 230 to provide the disassembly force can save manpower and provide a stable and continuous disassembly force, without causing additional damage to the small sleeve of the blast furnace.

[0045] When disassembling the conical mating structure of the small and medium-sized sleeves of a blast furnace, it is necessary to ensure that the disassembly force is along the axis direction of the small and medium-sized sleeves of the blast furnace as much as possible. Otherwise, it will increase the disassembly difficulty and even cause damage to the small and medium-sized sleeves of the blast furnace. For example, when disassembling the medium-sized sleeve 920 of the blast furnace from the large sleeve 910 of the blast furnace, when the disassembly force is inclined downward, the force at the contact area between the lower part of the medium-sized sleeve 920 of the blast furnace and the large sleeve 910 of the blast furnace will be more compact, increasing the disassembly difficulty. And when the force is large, it will damage the medium-sized sleeve 920 and the large sleeve 910 of the blast furnace.

[0046] It should be noted that since the rod bodies 241 of the two hook rods 240 are parallel, and the tail seats 243 of the two hook rods 240 receive equal supporting forces from the baffle 220, the pulling forces of the two hook heads 242 on the small and medium-sized sleeves of the blast furnace to be disassembled are the same in magnitude and direction. In addition, the distance between the two hook rods 240 is equal to the shaft diameter on the side of the small and medium-sized sleeves of the blast furnace to be disassembled away from the large sleeve 910. Then, the pulling forces of the two hook heads 242 on the small and medium-sized sleeves of the blast furnace to be disassembled are along the axis of the small and medium-sized sleeves of the blast furnace to the outside of the tuyere, and the magnitude is the resultant force of the pulling forces of the two hook heads 242, avoiding damage to the small and medium-sized sleeves or the large sleeve 910 of the blast furnace caused by uneven disassembly force.

[0047] The hook head 242 is plate-shaped. Define a plane passing through the axis of the rod body 241 as the dividing plane. The hook head 242 is located on one side of the dividing plane and is perpendicular to the dividing plane. The hook head 242 is perpendicular to the axis of the hook rod 240.

[0048] In this embodiment, the hook head 242 can be a rectangular or semi-circular plate. Specifically, the hook head 242 is perpendicular to the dividing plane and the axis of the hook rod 240. Then, the plate-shaped hook head 242 is parallel to the plane where the front sleeve edge of the small and medium-sized sleeves of the blast furnace to be disassembled is located, and thus can be closely attached to the front sleeve edge of the small and medium-sized sleeves of the blast furnace. The hook head 242 is located on one side of the dividing plane, which can simultaneously satisfy passing the hook head 242 through the small side socket of the small and medium-sized sleeves to be disassembled and enabling the hook head 242 to be closely attached to the front sleeve edge. Among them, when the hook rod 240 needs to be sent into the tuyere, rotate the hook rod 240 so that the hook head 242 faces the inside of the small and medium-sized sleeves of the blast furnace. When disassembling the small and medium-sized sleeves of the blast furnace, rotate the hook so that the hook head 242 faces the outside of the small and medium-sized sleeves of the blast furnace, and make the hook head 242 hook the front sleeve edge of the small and medium-sized sleeves of the blast furnace. At this time, the hook head 242 can be closely attached to the front sleeve edge of the small and medium-sized sleeves of the blast furnace.

[0049] In addition, the plate-shaped hook head 242 is closely attached to the front sleeve edge of the small and medium-sized sleeves of the blast furnace, which can prevent the small and medium-sized sleeves of the blast furnace from flipping downward in the vertical direction where the rod body 241 supports the small and medium-sized sleeves of the blast furnace when the small and medium-sized sleeves of the blast furnace are disassembled, thereby avoiding mutual wear between the small sleeve to be disassembled and the adjacent medium-sized sleeve 920, or between the medium-sized sleeve 920 to be disassembled and the adjacent large sleeve 910.

[0050] In one embodiment, as Figure 4As shown in the figure, the support base 210 is an isosceles right trapezoidal cylindrical structure. The length direction of the support base 210 is perpendicular to the axis of the rod body 241. The side wall of the support base 210 close to the baffle 220 is perpendicular to the horizontal mounting plate 100. The side wall of the support base 210 away from the baffle 220 inclines towards the hook head 242, and the inclination angle is equal to the inclination angle of the blast furnace wall 900.

[0051] The side wall of the support base 210 close to the baffle 220 being perpendicular to the horizontal mounting plate 100 can better fit the bottom of the hydraulic jack 230.

[0052] Specifically, during the disassembly process, the support base 210 needs to be leaned against the blast furnace wall 900 as the force point of the support base 210 in the horizontal direction. In this embodiment, the side wall of the support base 210 away from the baffle 220 inclines towards the hook head 242, and the inclination angle is equal to the inclination angle of the blast furnace wall 900, which can increase the contact area between the support base 210 and the blast furnace wall 900, that is, increase the force-bearing area of the blast furnace wall 900 and avoid damage to the blast furnace wall 900 due to concentrated force-bearing area.

[0053] Since the support base 210 is fixed, in order to facilitate the sliding of the hook rod 240 along the axial direction in the second through hole, in one embodiment, two fixed pulley guides 300 are respectively arranged at both ends of any one of the second through holes. The two fixed pulley guides 300 are respectively arranged on the upper and lower sides of the second through hole. The fixed pulley guide 300 is fixedly connected to the support base 210 through the guide mounting frame 310. The rail surface of the fixed pulley guide 300 is an arc-shaped curved surface, and the rail surface of the fixed pulley guide 300 is in contact and abuts against the rod body 241.

[0054] Specifically, the diameters of the first through hole and the second through hole are slightly larger than the shaft diameter of the rod body 241. The four fixed pulley guides 300 in contact with the rod body 241 of the same hook rod 240 can fix the moving track and direction of the hook rod 240.

[0055] In one embodiment, a positioning and fixing member 400 is arranged at one end of each second through hole close to the baffle 220. As Figure 5 shown, the positioning and fixing member 400 is provided with a positioning nut 410 and a Z-shaped anti-loosening screw 420. The positioning nut 410 is fixedly connected to the side wall of the support arm, and the axis of the positioning nut 410 is perpendicular to the horizontal mounting plate 100. The Z-shaped anti-loosening screw 420 is threadedly connected to the positioning nut 410.

[0056] The positioning and fixing member 400 in this embodiment is used to fix the hook rod 240. For example, when the small and medium-sized sleeve of the blast furnace is removed and before the hydraulic jack 230 needs to be closed, when tightening the Z-shaped stop screw 420, the bottom end of the Z-shaped stop screw 420 is in close contact with the rod body 241 of the hook rod 240, realizing the fixation of the hook rod 240, ensuring that the hook rod 240 will not rotate or slide relative to the second through hole, and finally realizing the fixation of the hook rod 240 to the small and medium-sized sleeve of the blast furnace to be disassembled, facilitating the transfer of the small and medium-sized sleeve of the blast furnace.

[0057] In one embodiment, the tailstock 243 is threadedly connected to the rod body 241, which can realize the adjustment of the distance between the tailstock 243 and the hook head 242. When the hook head 242 hooks the leading edge of the small and medium-sized sleeve and the hydraulic jack 230 is in the unstarted state, the baffle 220 is closely abutted against the hydraulic jack 230, and then the tailstock 243 is rotated on the rod body 241 to make the tailstock 243 closely abutted against the baffle 220.

[0058] In order to facilitate the rotation of the hook rod 240, in one embodiment, an L-shaped handle 244 for rotating the hook rod 240 is provided on one side of the tailstock 243 away from the rod body 241, and the L-shaped handle 244 is fixedly connected to the tailstock 243.

[0059] In one embodiment, a counterweight frame 600 for placing different counterweight blocks 700 is provided at one end of the bottom of the bearing assembly away from the hook head 242. Different weights of counterweight blocks 700 can be placed on the counterweight frame 600. The function of the counterweight block 700 is to play a balancing role for the bearing assembly relative to the hook head 242 and the front and rear ends of the hook tail after the small and medium-sized sleeve of the blast furnace is disassembled.

[0060] In a specific embodiment, as Figure 6 shown, the bearing assembly is a flatbed transport vehicle. When disassembling the medium-sized sleeve 920 of the blast furnace, the top of the flatbed transport vehicle is a horizontal mounting plate 100, and two moving wheels 500 are fixed to the bottom through the vehicle frame. The axle of the moving wheel 500 is fixedly connected to a counterweight frame 600. A counterweight block 700 is provided on the top of the counterweight frame 600, and a locking wheel 800 is assembled at the bottom of the counterweight frame 600. The locking wheel 800 is provided with a locking mechanism for locking the flatbed transport vehicle during the disassembly process to prevent displacement and cause disassembly failure.

[0061] The disassembly process of the disassembly device of this embodiment for the medium-sized sleeve 920 of the blast furnace is as follows:

[0062] (1) Assemble the disassembly device with the middle sleeve 920 of the blast furnace. First, move the flatbed transporter on the tuyere platform 930 so that the front end of the support arm abuts against the blast furnace wall surface. Start the locking mechanism of the locking wheel 800. Then, for the two hook rods 240, rotate the L-shaped handle 244 so that the hook head 242 of the hook rod 240 faces the inside of the middle sleeve 920 of the blast furnace. Insert the hook rod 240 into the middle sleeve 920 of the blast furnace so that the hook head 242 extends out of the middle sleeve 920 of the blast furnace along the tuyere. Then, rotate the hook rod 240 so that the hook head 242 faces the outside of the middle sleeve 920 of the blast furnace, and pull the hook rod 240 outward from the tuyere so that the hook head 242 is closely attached to the front sleeve edge of the middle sleeve 920 of the blast furnace. Then, move the baffle 220 to abut against the supporting end of the hydraulic jack 230. Then, adjust the distance from the tailstock 243 to the hook head 242 so that the tailstock 243 is closely abutted against the baffle 220.

[0063] (2) Start the hydraulic jack 230 to support the baffle 220 and disassemble the middle sleeve 920 of the blast furnace from the large sleeve 910 of the blast furnace.

[0064] (3) Tighten the Z-shaped stop screw to fix the hook rod 240 to the support seat 210, turn off the hydraulic jack 230, open the locking mechanism of the locking wheel 800, and move the flatbed transporter away from the blast furnace.

[0065] Using the disassembly device of this embodiment can save manpower and shorten the disassembly time at the same time. The disassembly time of the middle sleeve 920 can be shortened to 1-2 hours, reducing the blast furnace downtime. In addition, during the disassembly process, the hydraulic jack 230 can provide a stable supporting force, enabling the pulling force of the pull rod to be outward along the axis of the middle sleeve 920 of the blast furnace, avoiding damage to the middle sleeve 920 and the large sleeve 910 of the blast furnace caused by uneven disassembly force.

[0066] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A movable disassembly device for the small and medium-sized sleeves of a blast furnace, characterized in that, It includes a bearing component that can move on the tuyere platform (930) and a disassembly component (200) fixedly assembled on the top of the bearing component; The bearing component is provided with a horizontal mounting plate (100), and the disassembly component (200) is provided with a support seat (210), a baffle (220) that can slide on the top of the horizontal mounting plate (100), a hydraulic jack (230), and two hook rods (240) that can extend into the inner part of the small and medium-sized sleeve of the blast furnace and hook the front sleeve edge; The support seat (210) is fixedly assembled on the top of the horizontal mounting plate (100), and the baffle (220) is perpendicularly fixed to the horizontal mounting plate (100); The hydraulic jack (230) is fixedly connected to the horizontal mounting plate (100), located between the support seat (210) and the baffle (220). The supporting direction of the hydraulic jack (230) is perpendicular to the baffle (220). The bottom of the hydraulic jack (230) abuts against the support seat (210), and the top abuts against the baffle (220); The baffle (220) is provided with two first through holes whose axes are perpendicular to the baffle (220). The support seat (210) is provided with two second through holes whose axes respectively coincide with the axes of the two first through holes. The distances from the two first through holes to the horizontal mounting plate (100) are equal; The hook rod (240) is provided with a rod body (241) that can rotate along the axes of the first through hole and the second through hole, and a hook head (242) and a tail seat (243) respectively fixedly connected to both ends of the rod body (241). The tail seat (243) is fixedly connected to the side of the baffle (220) away from the hydraulic jack (230). The rod bodies (241) of the two hook rods (240) respectively pass through a set of first through holes and second through holes whose axes coincide. The distance between the two hook rods (240) is equal to the shaft diameter of the small and medium-sized sleeve of the blast furnace to be disassembled on the side away from the large sleeve (910) of the blast furnace.

2. The removable disassembly device for the middle and small sleeves of a blast furnace according to claim 1, wherein, The hook head (242) is plate-shaped. Define a plane passing through the axis of the rod body (241) as a dividing plane. The hook head (242) is located on one side of the dividing plane and the hook head (242) is perpendicularly arranged with respect to the dividing plane. The hook head (242) is perpendicular to the axis of the hook rod (240).

3. The movable disassembly device for the small and medium-sized blast furnace tuyere sleeve according to claim 2, wherein, The support seat (210) is an isosceles right trapezoidal cylindrical structure, and the length direction of the support seat (210) is perpendicular to the axis of the rod body (241); The side wall of the support seat (210) close to the baffle (220) is perpendicular to the horizontal mounting plate (100). The side wall of the support seat (210) away from the baffle (220) inclines towards the hook head (242), and the inclination angle is equal to the inclination angle of the blast furnace wall (900); 4. The removable disassembly device for the small and medium-sized blast furnace tuyere according to claim 3, wherein Two fixed pulley guide rails (300) are respectively arranged at both ends of any one of the second through holes. The two fixed pulley guide rails (300) are respectively arranged on the upper and lower sides of the second through hole. The fixed pulley guide rail (300) is fixedly connected to the support seat (210) through a guide rail mounting frame (310); The rail surface of the fixed pulley guide rail (300) is an arc-shaped curved surface, and the rail surface of the fixed pulley guide rail (300) is in fit contact with the rod body (241).

5. The removable disassembly device for the small and medium-sized blast furnace tuyere sleeve according to claim 4, characterized in that, A positioning and fixing member (400) is provided at one end of each of the second through holes close to the baffle (220). The positioning and fixing member (400) is provided with a positioning nut (410) and a Z-shaped anti-loosening screw (420). The positioning nut (410) is fixedly connected to the side wall of the support arm, and the axis of the positioning nut (410) is perpendicular to the horizontal mounting plate (100). The Z-shaped anti-loosening screw (420) is threadedly connected to the positioning nut (410).

6. The removable disassembly device for the small and medium-sized blast furnace tuyere according to claim 1, characterized in that, The tailstock (243) is threadedly connected to the rod body (241).

7. The movable dismounting device for the small and medium-sized blast furnace tuyere according to claim 6, characterized in that, One side of the tailstock (243) away from the rod body (241) is provided with an L-shaped handle (244) for rotating the hook rod (240), and the L-shaped handle (244) is fixedly connected to the tailstock (243).

8. The removable disassembly device for the small and medium-sized blast furnace tuyere according to claim 1, wherein, One end of the bottom of the bearing assembly away from the hook head (242) is provided with a counterweight rack (600) for placing different counterweight blocks (700).

9. The removable disassembly device for the small and medium-sized blast furnace tuyere sleeve according to claim 1, characterized in that, The hydraulic jack (230) is arranged between the two hook rods (240).

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