Blast furnace tuyere small sleeve dismounting and mounting tool and dismounting and mounting method

Abstract

The invention discloses a blast-furnace tuyere small sleeve disassembling and assembling tool and method in the technical field of blast-furnace tuyere overhauling. The blast-furnace tuyere small sleeve disassembling and assembling tool comprises a connecting rack, and two transverse guide columns are arranged on the connecting rack; the force carrying plate is arranged above the connecting rack in the longitudinal direction; the guide frame is in sliding connection with the transverse guide column, and one transverse end of the guide frame is fixedly connected with the force loading plate; the push-pull rod is arranged in the transverse direction, and one end of the push-pull rod is fixedly connected with the other transverse end of the guide frame; the mounting rack is arranged on the outer side of the force loading plate and is fixedly connected with the connecting rack; the two striking hammers are arranged on the two transverse sides of the mounting frame and can apply reverse transverse striking force to the force bearing plate; and the dismounting jig is detachably and fixedly connected with one end of the push-pull rod. According to the invention, the tuyere small sleeve can be automatically disassembled and assembled at the blast-furnace tuyere, manpower and labor intensity can be reduced, and meanwhile, the maintenance environment of the blast-furnace tuyere is improved.

Description

Technical Field

[0001] The invention relates to the technical field of blast furnace tuyere maintenance, and in particular to a blast furnace tuyere small sleeve disassembly and assembly tool and a disassembly and assembly method. Background Art

[0002] The blast furnace tuyere has the characteristics of good conductivity, uniform cooling, high cooling efficiency, dense structure and good wear resistance. It is usually installed in the furnace wall between the furnace belly and the furnace bottom. There is a 500mm tuyere sleeve in the front section extending into the furnace. It is directly subjected to the thermal erosion of liquid slag and severe wear from falling hot materials. It is very easy to burn out and needs to be replaced frequently.

[0003] When replacing the tuyere sleeve, you need to stop the wind first, then remove the pull rod and blowpipe flange bolts, and then use a forklift to pour out the blowpipe. Finally, 9 people are needed to use a card machine to pull the tuyere sleeve axially out. Therefore, when replacing the tuyere sleeve, there are problems such as large number of personnel, high labor intensity, small working space and high maintenance environment temperature. Especially in summer, the on-site working temperature reaches about 60 degrees, and the high-temperature flames in the blast furnace and the high-temperature water vapor sprayed from the inside of the tuyere sleeve can easily burn people. At the same time, flash explosions and gas backflow inside the blowpipe can easily cause gas poisoning.

[0004] Therefore, how to improve the replacement environment of the tuyere sleeve has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] In view of this, the object of the present invention is to provide a blast furnace tuyere small sleeve disassembly and assembly tool to solve the technical problem of poor replacement environment of the existing blast furnace tuyere small sleeve.

[0006] The technical solution adopted by the present invention is: a blast furnace tuyere small sleeve disassembly and assembly tool, the disassembly and assembly tool comprises:

[0007] A connecting frame, wherein two transverse guide columns are provided on the connecting frame;

[0008] A force-carrying plate, the force-carrying plate being arranged above the connecting frame in the longitudinal direction;

[0009] A guide frame, wherein the guide frame is slidably connected to the transverse guide column, and one transverse end of the guide frame is fixedly connected to the load-bearing plate;

[0010] A push-pull rod, wherein the push-pull rod is arranged in a transverse direction, and one end of the push-pull rod is fixedly connected to the other transverse end of the guide frame;

[0011] A mounting frame, the mounting frame is arranged on the outside of the load-bearing plate and is fixedly connected to the connecting frame;

[0012] Striking hammers, two of which are arranged on the lateral sides of the mounting frame and are capable of applying a reverse lateral striking force to the force-carrying plate;

[0013] The disassembly and assembly jig is detachably and fixedly connected to the other transverse end of the push-pull rod.

[0014] Preferably, the connecting platform is provided with a longitudinal guide column and a longitudinal telescopic cylinder, the two longitudinal guide columns are arranged one above the other on the upper and lower sides of the transverse guide column, and the mounting frame is slidably connected to the longitudinal guide column, one end of the longitudinal telescopic cylinder is fixedly connected to the connecting platform, and the other end of the longitudinal telescopic cylinder is fixedly connected to the mounting frame;

[0015] The two striking hammers are spaced apart in the longitudinal direction, and the force-bearing plate is provided with two avoidance holes matched with the striking hammers, and the longitudinal spacing between the two avoidance holes is greater than the longitudinal spacing between the two striking hammers.

[0016] Preferably, the longitudinal guide column and the outer side cover of the mounting frame are provided with a protective cover.

[0017] Preferably, the disassembly and assembly fixture comprises a rod body and a hook head, one end of the rod body is detachably fixedly connected to the push-pull rod, and the hook head is fixedly connected to the other end of the rod body.

[0018] Preferably, the disassembly and assembly fixture includes a support rod and a top sleeve plate, one end of the support rod is detachably fixedly connected to the push-pull rod, the top sleeve plate is fixedly sleeved on the support rod, and the radial dimension of the top sleeve plate is larger than the inner diameter dimension of the large diameter end of the small sleeve of the air outlet.

[0019] The second object of the present invention is to provide a method for disassembling and assembling a blast furnace tuyere small sleeve, wherein the disassembling and assembling method uses the above-mentioned blast furnace tuyere small sleeve disassembling and assembling tool, and the disassembling and assembling method comprises the following steps:

[0020] Remove the blowpipe;

[0021] First, the disassembly and assembly tool is transported to one end of the tuyere sleeve by a forklift, and then the hook head of the disassembly and assembly tool is axially inserted into the tuyere sleeve by the forklift, and the angle of the hook head is adjusted, and then the tuyere sleeve is pulled out by the positive force of the impact hammer on the load plate;

[0022] First, a disassembly and assembly fixture with a top sleeve plate is installed at the end of the support rod, and then the small tuyere sleeve is fixed in the middle tuyere sleeve, and then the small tuyere sleeve is firmly pushed up by the reverse force of the hammer on the load-bearing plate;

[0023] Install the blowpipe.

[0024] Beneficial effects of the present invention:

[0025] The present invention provides a guide frame fixedly connected to the force-carrying plate and capable of laterally moving on a connecting stand, and striking hammers are mounted on mounting frames on both lateral sides of the force-carrying plate. Lateral striking forces in opposite directions can be applied to the force-carrying plate by the two striking hammers, thereby driving a disassembly and assembly fixture at the other end of the push-pull rod to apply a lateral force to the tuyere sleeve. This can not only realize the automated disassembly and installation of the tuyere sleeve at the tuyere of a blast furnace, but can also reduce manpower and labor intensity, while improving the maintenance environment of the tuyere of a blast furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic diagram of the blast furnace tuyere small sleeve disassembly and assembly tool of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the blast furnace tuyere small sleeve disassembly and assembly tool after the protective cover is removed;

[0028] Figure 3 The second structural schematic diagram of the blast furnace tuyere small sleeve disassembly and assembly tool of the present invention after the protective cover is removed;

[0029] Figure 4 A schematic diagram of connecting the platform with the transverse guide column and the guide frame;

[0030] Figure 5 A schematic diagram of connecting the platform with the longitudinal guide column and the mounting frame;

[0031] Figure 6 This is a reference diagram for the usage status of the blast furnace tuyere small sleeve disassembly and assembly tooling.

[0032] Description of reference numerals in the figures:

[0033] 1. Connecting stand; 2. Horizontal guide column; 3. Load-bearing plate; 4. Guide frame; 5. Push-pull rod; 6. Mounting frame; 7. Strike hammer; 8. Disassembly and assembly fixture; 9. Longitudinal guide column; 10. Longitudinal telescopic cylinder; 11. Avoidance hole; 12. Protective cover; 13. Rod body; 14. Hook head; 15. Support rod; 16. Top cover plate; 17. First column; 18. Second column; 19. Small air outlet cover; 20. Forklift. DETAILED DESCRIPTION

[0034] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and 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 operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0038] Examples, such as Figure 1-Figure 6 As shown, a blast furnace tuyere small sleeve disassembly and assembly tool, the disassembly and assembly tool comprises:

[0039] The connecting platform 1 is horizontally arranged and provided with a transverse guide column 2, wherein two transverse guide columns 2 are arranged with a longitudinal spacing.

[0040] The force-carrying plate 3 is arranged above the connecting stand 1 along the longitudinal direction.

[0041] The guide frame 4 is arranged above the connecting platform 1 and is slidably connected to the transverse guide column 2. One transverse end of the guide frame 4 is fixedly connected to the load-bearing plate 3 so that the load-bearing plate 3 can reciprocate laterally above the connecting platform 1.

[0042] The push-pull rod 5 is arranged on one side of the connecting frame 1 along the lateral direction, and one end of the push-pull rod 5 is fixedly connected to the other lateral end of the guide frame 4 .

[0043] The mounting frame 6 is arranged on the outside of the load-bearing plate 3 , and the mounting frame 6 is fixedly connected to the connecting stand 1 .

[0044] There are two striking hammers 7 , and the two striking hammers 7 are arranged one by one on the lateral sides of the mounting frame 6 and can apply lateral striking forces in opposite directions to the force-carrying plate 3 to drive the push-pull rod 5 to move lateraly through the force-carrying plate 3 .

[0045] The disassembly and assembly jig 8 is detachably and fixedly connected to the other transverse end of the push-pull rod 5 , and the disassembly and assembly jig 8 can be axially and fixedly connected to the air outlet sleeve 19 to apply a transverse force to the disassembly and assembly jig 8 .

[0046] In the present application, a guide frame 4 is provided on the connecting stand 1, which is fixedly connected to the force-carrying plate 3 and can move laterally. The striking hammers 7 are installed on the mounting frames 6 on the lateral sides of the force-carrying plate 3. The two striking hammers 7 can apply lateral striking forces in opposite directions to the force-carrying plate 3, thereby driving the disassembly and assembly fixture 8 at the other end of the push-pull rod 5 to apply lateral force to the tuyere sleeve 19. This can not only realize the automatic disassembly and installation of the tuyere sleeve 19 at the blast furnace tuyere, but also reduce manpower and labor intensity, while improving the maintenance environment of the blast furnace tuyere.

[0047] In a specific embodiment, if Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a longitudinal guide column 9 and a longitudinal telescopic cylinder 10 are provided above the connecting platform 1. The number of the longitudinal guide columns 9 is two, and the two longitudinal guide columns 9 are arranged one above and one below on the upper and lower sides of the transverse guide column 2. The mounting frame 6 is slidably connected to the longitudinal guide column 9, one end of the longitudinal telescopic cylinder 10 is fixedly connected to the connecting platform 1, and the other end of the longitudinal telescopic cylinder 10 is fixedly connected to the mounting frame 6, so as to drive the mounting frame 6 to reciprocate longitudinally through the extension and contraction of the longitudinal telescopic cylinder 10.

[0048] Specifically, four first columns 17 and two second columns 18 are provided on the connecting frame 1, and the first columns 17 and the two second columns 18 are arranged in the vertical direction. The four first columns 17 are distributed in a matrix, and the lateral ends of the lateral guide column 2 are fixedly connected to the two first columns 17 in a one-to-one correspondence; the two second columns 18 are arranged at the longitudinal ends of the connecting frame 1, and the longitudinal ends of the longitudinal guide column 9 are fixedly connected to the two second columns 18 in a one-to-one correspondence.

[0049] The striking hammer 7 is a pneumatic striking hammer, and the two striking hammers 7 are spaced apart in the longitudinal direction; the force-carrying plate 3 is provided with two avoidance holes 11 which cooperate with the striking hammers 7, and the longitudinal spacing of the two avoidance holes 11 is greater than the longitudinal spacing of the two striking hammers 7, so that when one of the pneumatic striking hammers applies a striking force to the middle part of the force-carrying plate 3, the other pneumatic striking hammer is directly opposite to the avoidance hole 11, thereby avoiding the lateral movement of the force-carrying plate 3 from interfering with the pneumatic striking hammer, and making the two pneumatic striking hammers have a smaller lateral spacing, thereby making the entire disassembly and assembly tool have a smaller lateral size.

[0050] Specifically, the mounting frame 6 includes two mounting plates and four connecting plates. The mounting plates are arranged in the vertical direction, and the two mounting plates are arranged at a horizontal interval. The four connecting plates are distributed in a matrix between the two connecting plates, and the lateral ends of the connecting plates are fixedly connected to the two mounting plates in a one-to-one correspondence. The force-carrying plate 3 is arranged between the two mounting plates, and the two connecting plates are located above the force-carrying plates 3, and the two connecting plates are located below the force-carrying plates 3.

[0051] Guide holes are provided on the four connecting plates, and the longitudinal guide posts 9 are inserted into the guide holes, and the mounting frame 6 is slidably connected to the longitudinal guide posts 9 .

[0052] Preferably, a protective cover 12 is provided on the outer side of the longitudinal guide column 9 and the mounting frame 6 to improve the appearance of the entire disassembly and assembly tool.

[0053] In a specific embodiment, if Figure 2 As shown, the disassembly and assembly fixture 8 is a hook sleeve rod, which includes a rod body 13 and a hook head 14. The rod body 13 is arranged along the transverse direction, and one transverse end of the rod body 13 is detachably fixedly connected to one end of the push-pull rod 5 by a fastening bolt, and the hook head 14 is fixedly connected to the other transverse end of the rod body 13.

[0054] In a specific embodiment, if Figure 3 As shown, the disassembly and assembly fixture 8 is a top sleeve rod, which includes a support rod 15 and a top sleeve plate 16. The support rod 15 is arranged in the transverse direction, and one transverse end of the support rod 15 is detachably fixedly connected to one end of the push-pull rod 5 by a fastening bolt. The top sleeve plate 16 is fixedly sleeved on the support rod 15, and the radial dimension of the top sleeve plate 16 is larger than the inner diameter dimension of the large diameter end of the tuyere small sleeve 19, so that the top sleeve plate 16 can apply a tightening force to the tuyere small sleeve 19 in the tuyere middle sleeve.

[0055] Examples, such as Figure 6 As shown, a method for disassembling and assembling a blast furnace tuyere small sleeve is provided, wherein the disassembling and assembling method uses the above-mentioned blast furnace tuyere small sleeve disassembling and assembling tool, and the disassembling and assembling method comprises the following steps:

[0056] Removing the blow pipe; specifically including: starting construction after all commencement procedures are complete, first removing the bolts between the blow pipe and the upper pipe, and removing the tie rods connecting the blow pipe to the furnace body on both sides, and then transporting the blow pipe to the designated position by a forklift 20.

[0057] Removing the tuyere sleeve 19; specifically comprising: first fixing the disassembly and assembly fixture 8 with the hook head 14 to the push-pull rod 5, and fixing the disassembly and assembly tooling to the forklift 20, and transporting the disassembly and assembly tooling to one end of the tuyere sleeve 19 by the forklift 20; then aligning the hook head 14 with the tuyere sleeve 19 by the forklift 20 and axially inserting the tuyere sleeve 19, and adjusting the angle of the hook head 14; and then pulling out the tuyere sleeve 19 by the positive force of the striking hammer 7 on the load-bearing plate 3.

[0058] Reinstall the small air vent sleeve 19; specifically, the process includes: firstly installing a disassembly and assembly jig 8 having a top sleeve plate 16 at the end of the push-pull rod 5, and manually fixing the small air vent sleeve 19 in the middle air vent sleeve; then using a forklift 20 to align the support rod of the disassembly and assembly jig 8 with the small air vent sleeve 19 and insert the small air vent sleeve 19; then, the small air vent sleeve 19 is pushed into the middle air vent sleeve by the reverse force of the impact hammer 7 on the load-bearing plate 3, until the small air vent sleeve 19 is firmly fixed without any gap.

[0059] Install the blowpipe; specifically, include: using a forklift 20 to realign the blowpipe with an angle for installation, and manually installing the upper bolts and the pull rods on both sides.

[0060] Compared with the prior art, this application has at least the following beneficial technical effects:

[0061] The disassembly ring tooling in this application can not only reduce safety risks, improve construction efficiency, shorten maintenance time, win more time for the production operation of the blast furnace, and improve the production efficiency of the owner, but also can be reused and has a long service life, which can create long-term benefits for the enterprise.

[0062] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A blast furnace tuyere small sleeve disassembly and assembly tool, characterized in that: include: A connecting frame (1), wherein the connecting frame (1) is provided with two transverse guide columns (2); A force-carrying plate (3), wherein the force-carrying plate (3) is arranged above the connecting frame (1) along the longitudinal direction; A guide frame (4), wherein the guide frame (4) is slidably connected to the transverse guide column (2), and one transverse end of the guide frame (4) is fixedly connected to the force-carrying plate (3); A push-pull rod (5), wherein the push-pull rod (5) is arranged in a transverse direction, and one end of the push-pull rod (5) is fixedly connected to the other transverse end of the guide frame (4); A mounting frame (6), wherein the mounting frame (6) is arranged on the outside of the force-carrying plate (3), and the mounting frame (6) is fixedly connected to the connecting frame (1); Striking hammers (7), two of which are arranged on two lateral sides of the mounting frame (6) and are capable of applying a reverse lateral striking force to the force-carrying plate (3); A disassembly and assembly jig (8) is detachably and fixedly connected to the other transverse end of the push-pull rod (5).

2. The blast furnace tuyere small sleeve disassembly and assembly tool according to claim 1, characterized in that: The connecting frame (1) is provided with a longitudinal guide column (9) and a longitudinal telescopic cylinder (10), the two longitudinal guide columns (9) are arranged one above the other on the upper and lower sides of the transverse guide column (2), and the mounting frame (6) is slidably connected to the longitudinal guide column (9), one end of the longitudinal telescopic cylinder (10) is fixedly connected to the connecting frame (1), and the other end of the longitudinal telescopic cylinder (10) is fixedly connected to the mounting frame (6); The two striking hammers (7) are spaced apart in the longitudinal direction, and the force-carrying plate (3) is provided with two avoidance holes (11) matched with the striking hammers (7), and the longitudinal spacing between the two avoidance holes (11) is greater than the longitudinal spacing between the two striking hammers (7).

3. The blast furnace tuyere small sleeve disassembly and assembly tool according to claim 2, characterized in that: The longitudinal guide column (9) and the outer side cover of the mounting frame (6) are provided with a protective cover (12).

4. The blast furnace tuyere small sleeve disassembly and assembly tool according to claim 1, characterized in that: The disassembly and assembly fixture (8) comprises a rod body (13) and a hook head (14); one end of the rod body (13) is detachably and fixedly connected to the push-pull rod (5), and the hook head (14) is fixedly connected to the other end of the rod body (13).

5. The blast furnace tuyere small sleeve disassembly and assembly tool according to claim 1, characterized in that: The disassembly and assembly fixture (8) comprises a support rod (15) and a top sleeve plate (16), one end of the support rod (15) is detachably fixedly connected to the push-pull rod (5), the top sleeve plate (16) is fixedly sleeved on the support rod (15), and the radial dimension of the top sleeve plate (16) is greater than the inner diameter dimension of the large diameter end of the air outlet small sleeve (19).

6. A method for disassembling and assembling a blast furnace tuyere sleeve, the method using the blast furnace tuyere sleeve disassembling and assembling tool according to any one of claims 1 to 5, the method comprising the following steps: Remove the blowpipe; First, the disassembly and assembly tool is transported to one end of the tuyere sleeve (19) by a forklift (20), and then the hook head (14) of the disassembly and assembly jig (8) is axially inserted into the tuyere sleeve (19) by the forklift (20), and the angle of the hook head (14) is adjusted. Then, the tuyere sleeve (19) is pulled out by the positive force of the striking hammer (7) on the load-bearing plate (3); First, a disassembly and assembly jig (8) having a top sleeve plate (16) is installed at the end of the support rod (15), and then the small tuyere sleeve (19) is fixed in the middle tuyere sleeve, and then the small tuyere sleeve (19) is firmly pushed up by the reverse force of the impact hammer (7) on the load-bearing plate (3); Install the blowpipe.

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