Forklift changes blast furnace air supply upper and lower section's frock and changes method

Abstract

The present application relates to the technical field of blast furnace maintenance equipment, and specifically discloses a forklift replacement of blast furnace air supply upper and lower sections and a replacement method, which comprises a rotating flange and a fixed groove frame, the rotating flange is rotatably installed on the fixed groove frame, a plurality of fixing pins are arranged on the upper part of the rotating flange, the rotating flange is connected to the bottom flange of the blast furnace air supply upper and lower sections through the fixing pins, a plurality of rotating flange angle adjusting bolts are arranged on the outer periphery of the rotating flange, and the rotating flange angle adjusting bolts are used for adjusting and positioning the rotating angle of the rotating flange; two forklift fork holes are arranged at the bottom of the fixed groove frame, and the forks of the forklift are inserted into the forklift fork holes; the present application is moved and installed by using the forklift assisted lifting, the air supply upper and lower sections are connected and fixed through the tool, the upper flange of the air supply upper and lower sections is aligned with the hot air surrounding pipe flange through fine adjustment, the structure is simple, the operation is safe, the time for replacing the blast furnace air supply upper and lower sections is effectively shortened, the working labor intensity is reduced, and a powerful guarantee is provided for the blast furnace production.

Description

Technical Field

[0001] This invention relates to the field of blast furnace maintenance equipment technology, specifically to a tooling and replacement method for replacing the upper and lower sections of the blast furnace air supply system using a forklift. Background Technology

[0002] Currently, blast furnaces are trending towards larger volumes, resulting in an increase in the number of air blowers. The continuous operation of blast furnaces places increasingly higher demands on the temperature resistance of the upper and lower sections of the air blowers. Therefore, the upper and lower air blower sections are considered critical air supply equipment in blast furnace production. Typically, it takes about 5 hours for 4 people to replace one upper or lower air blower section. The replacement method involves manual replacement using slings and hand-operated hoists. Because the upper and lower air blower sections are connected to the air supply duct via flange bolts, the vertical lifting height is nearly 4 meters. This results in significant stress on the hanging points during installation, and the flange installation and adjustment are very difficult, posing a significant operational risk and requiring substantial manpower.

[0003] A forklift-specific tooling for efficiently replacing the upper and lower sections of the blast furnace air supply system was designed and patented previously (patent number: 201822250012.6). However, this device is unstable during the relocation of the upper and lower air supply sections, posing safety risks. Therefore, how to efficiently, safely, and labor-savingly replace the upper and lower air supply sections of the blast furnace has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this invention is to provide a tooling and replacement method for replacing the upper and lower sections of the blast furnace air supply using a forklift.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a tooling for replacing the upper and lower sections of the blast furnace air supply with a forklift, including a rotating flange and a fixed slot frame. The rotating flange is rotatably mounted on the fixed slot frame. The upper part of the rotating flange is provided with multiple fixing pins. The rotating flange is connected to the bottom flange of the upper and lower sections of the blast furnace air supply through the fixing pins. The outer periphery of the rotating flange is provided with multiple rotating flange angle adjusting bolts. The rotating flange angle adjusting bolts adjust and position the rotation angle of the rotating flange.

[0006] The bottom of the fixed slot frame has two forklift fork holes, into which forklift forks are inserted.

[0007] Specifically, a fixing plate is installed on the top of the fixing slot frame, and connecting plates are welded on both sides of the fixing plate. Adjusting nuts are welded on the connecting plates, and the inner threads of the adjusting nuts are connected to the rotating flange angle adjusting bolts. The inner side of the rotating flange angle adjusting bolts contacts the side of the rotating flange.

[0008] Specifically, a horizontal plate is fixed in the middle of the fixed slot frame. The middle of the horizontal plate and the middle of the fixed plate are respectively provided with a rotating shaft hole. A rotating shaft passes through the rotating shaft hole. The top of the rotating shaft is fixed to the bottom of the rotating flange. A baffle is fixed to the bottom of the rotating shaft. The baffle blocks the bottom of the horizontal plate, so that the rotating flange can rotate in the rotating shaft hole through the rotating shaft.

[0009] Specifically, the lower part of the forklift fork hole is provided with a fork fixing bolt. The fork fixing bolt is installed at the bottom of the fixing slot frame. The fork fixing bolt is screwed into the forklift fork hole, and the top of the fork fixing bolt is pressed against the bottom of the forklift for tooling to fix the forklift fork.

[0010] Specifically, the upper part of the fixing pin is provided with a pin hole, and a locking pin is inserted horizontally into the pin hole. The locking pin blocks the upper part of the bottom flange of the upper and lower sections of the blast furnace air supply. The fixing pin and the locking pin are fixedly connected to the rotating flange and the bottom flange of the upper and lower sections of the blast furnace air supply.

[0011] A method for replacing the upper and lower sections of a blast furnace air supply system using a forklift includes the following steps:

[0012] 1) Insert the forklift forks into the forklift fork holes of the mounting bracket and tighten them with the fork fixing bolts;

[0013] 2) Secure the upper and lower sections of the blast furnace air supply to the rotating flange with fixing pins and transport them to the maintenance position;

[0014] 3) Use a forklift to lift the fixture, adjust the rotating flange angle adjusting bolts on the fixed plate, and tighten the rotating flange with the rotating flange angle adjusting bolts to prevent the rotating flange from rotating;

[0015] 4) Use a forklift to vertically transport the upper and lower sections of the blast furnace air supply to the installation position. The forklift can make minor adjustments in the front, back, left and right. Tighten the rotating flange angle adjustment bolts at different positions to adjust the flange bolt holes of the upper and lower sections of the blast furnace air supply on the rotating flange. Align the upper flange bolt holes of the upper and lower sections of the blast furnace air supply with the bolt holes of the hot blast pipe fixing flange.

[0016] 5) Install the upper flange fixing bolts of the upper and lower sections of the blast furnace air supply;

[0017] 6) Remove the locking pins and fork fixing bolts. Installation is complete.

[0018] The present invention has the following beneficial effects:

[0019] The present invention relates to a forklift-assisted tooling and quick replacement method for replacing the upper and lower sections of the blast furnace air supply system. The tooling is used to connect and fix the upper and lower sections of the air supply system, and fine-tuning is used to align the upper flanges of the upper and lower sections of the air supply system with the flanges of the hot blast pipe. The structure is simple, the operation is safe, and it effectively shortens the replacement time of the upper and lower sections of the blast furnace air supply system and reduces the labor intensity, thus providing a strong guarantee for blast furnace production. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the tooling used by the forklift to change the upper and lower sections of the blast furnace air supply.

[0021] Figure 2 This is a top view of the removed rotating flange.

[0022] In the diagram: 1-Fixing pin; 2-Rotating flange angle adjustment bolt; 3-Forklift fork hole; 4-Fork fixing bolt; 5-Rotating flange; 6-Fixing slot frame; 7-Rotating shaft; 8-Fixing plate; 9-Baffle; 10-Horizontal plate; 11-Pin hole; 12-Rotating shaft hole. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] like Figure 1-2 As shown, a forklift-specific tooling includes: a fixing pin 1, a rotating flange angle adjusting bolt 2, a forklift fork hole 3, a fork fixing bolt 4, a rotating flange 5, a fixing slot 6, a rotating shaft 7, a fixing plate 8, a baffle 9, a cross plate 10, a pin hole 11, and a shaft hole 12.

[0025] The fixed slot frame 6 is welded to the fixed plate 8, and the forklift fork hole 3 secures the fixed slot frame 6 to the forklift forks. Forklift fork fixing bolts 4 tighten against the bottom of the forklift forks to prevent the fixed slot frame 6 from moving back and forth. The rotating flange 5 is movably connected to the fixed plate 8 via the rotating shaft 7. The fixing pin 1 is used to fix the upper and lower sections of the blast furnace air supply to the rotating flange 5. The rotation angle of the rotating flange 5 is adjusted by the rotating flange angle adjusting bolts 2 on the fixed plate 8.

[0026] A method for replacing the upper and lower sections of a blast furnace air supply system using a forklift includes the following steps:

[0027] 1) Insert the forklift forks into the forklift fork holes 3 of the fixing bracket 6 and tighten them with the fork fixing bolts 4;

[0028] 2) Fix the upper and lower sections of the blast furnace air supply to the rotating flange 5 with fixing pin 1, and transport them to the maintenance position;

[0029] 3) Use a forklift to lift the fixture, adjust the rotating flange angle adjusting bolt 2 on the fixed plate 8, and tighten the rotating flange 5 with the rotating flange angle adjusting bolt 2 to prevent the rotating flange 5 from rotating;

[0030] 4) Use a forklift to vertically transport the upper and lower sections of the blast furnace air supply to the installation position. The forklift can make minor adjustments in the front, back, left and right. Tighten the rotating flange angle adjustment bolts 2 at different positions to adjust the flange bolt holes of the upper and lower sections of the blast furnace air supply on the rotating flange 5. Align the upper flange bolt holes of the upper and lower sections of the blast furnace air supply with the bolt holes of the hot air duct fixing flange.

[0031] 5) Install the upper flange fixing bolts of the upper and lower sections of the blast furnace air supply;

[0032] 6) Remove the locking pin and fork fixing bolts 4. Installation is complete.

[0033] This invention is not limited to the above-described embodiments. Anyone should know that any structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention.

[0034] The technologies, shapes, and structures not described in detail in this invention are all known technologies.

Claims

1. A tooling for changing the upper and lower sections of a blast furnace air supply using a forklift, characterized in that, It includes a rotating flange and a fixed slot frame. The rotating flange is rotatably mounted on the fixed slot frame. The upper part of the rotating flange is provided with multiple fixing pins. The rotating flange is connected to the bottom flange of the upper and lower sections of the blast furnace air supply through the fixing pins. The outer periphery of the rotating flange is provided with multiple rotating flange angle adjusting bolts. The rotating flange angle adjusting bolts adjust and position the rotation angle of the rotating flange. A fixed plate is installed on the top of the fixed slot frame. Connecting plates are welded to both sides of the fixed plate. Adjusting nuts are welded to the connecting plates. The adjusting nuts are threaded with rotating flange angle adjusting bolts. The inner side of the rotating flange angle adjusting bolts contacts the side of the rotating flange. A horizontal plate is fixed in the middle of the fixed slot frame. The middle of the horizontal plate and the middle of the fixed plate are respectively provided with shaft holes. A rotating shaft passes through the shaft holes. The top of the rotating shaft is fixed to the bottom of the rotating flange. A baffle is fixed to the bottom of the rotating shaft. The baffle blocks the bottom of the horizontal plate, so that the rotating flange can rotate through the shaft holes via the rotating shaft. The bottom of the fixed slot frame has two forklift fork holes, into which forklift forks are inserted.

2. The tooling for replacing the upper and lower sections of the blast furnace air supply using a forklift according to claim 1, characterized in that, The forklift fork hole is provided with a fork fixing bolt at the bottom. The fork fixing bolt is installed at the bottom of the fixing slot frame. The fork fixing bolt is screwed into the forklift fork hole and the top of the fork fixing bolt is against the bottom of the forklift for tooling to fix the forklift fork.

3. The tooling for replacing the upper and lower sections of the blast furnace air supply using a forklift according to claim 1, characterized in that, The upper part of the fixing pin is provided with a pin hole, and a locking pin is inserted horizontally into the pin hole. The locking pin blocks the upper part of the bottom flange of the upper and lower sections of the blast furnace air supply. The fixing pin and the locking pin are fixedly connected to the rotating flange and the bottom flange of the upper and lower sections of the blast furnace air supply.

4. The method for replacing the upper and lower sections of the blast furnace air supply system using a forklift according to any one of claims 1-3, characterized in that, Includes the following steps: 1) Insert the forklift forks into the forklift fork holes of the mounting bracket and tighten them with the fork fixing bolts; 2) Secure the upper and lower sections of the blast furnace air supply to the rotating flange with fixing pins and transport them to the maintenance position; 3) Use a forklift to lift the fixture, adjust the rotating flange angle adjusting bolts on the fixed plate, and tighten the rotating flange with the rotating flange angle adjusting bolts to prevent the rotating flange from rotating; 4) Use a forklift to vertically transport the upper and lower sections of the blast furnace air supply to the installation position. The forklift can make minor adjustments in the front, back, left and right. Tighten the rotating flange angle adjustment bolts at different positions to adjust the flange bolt holes of the upper and lower sections of the blast furnace air supply on the rotating flange. Align the upper flange bolt holes of the upper and lower sections of the blast furnace air supply with the bolt holes of the hot blast pipe fixing flange. 5) Install the upper flange fixing bolts of the upper and lower sections of the blast furnace air supply; 6) Remove the locking pins and fork fixing bolts. Installation is complete.

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