Rapid replacement construction tool for blast furnace distribution chute

Abstract

The utility model discloses a blast furnace distribution chute rapid replacement construction tool and belongs to the technical field of blast furnace equipment overhaul construction. Comprising a clamping groove body (1), a lifting lug (2), a weight stack (3), a fixing bolt (4), a nut (5) and a gasket (6). The lifting lugs (2) are welded to the upper edges of the two sides of the clamping groove body (1), the weight stack (3) is installed at the tail of the clamping groove body (1), and the fixing bolt (4), the nut (5) and the gasket (6) abut against and fix the weight stack (3). The quick chute aligning and mounting device has the advantages that the chute is quickly aligned and mounted according to the lever principle of lifting balance, so that the labor investment is reduced, the construction time is greatly shortened, the construction safety of constructors is ensured, the risk coefficient is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of blast furnace equipment maintenance construction, and specifically relates to a blast furnace material distribution chute quick replacement construction tool Background Art

[0002] The material distribution chute is a key core equipment of the ironmaking blast furnace top. Its function is to cooperate with the airtight box to put the charge into the furnace. As the smelting intensity of the blast furnace continues to increase, the load of the top charging system continues to increase. The material distribution chute is subjected to high temperature radiation, and is subjected to the impact and wear of the charge for a long time, as well as being exposed to a high temperature working environment, so it needs to be replaced regularly or irregularly.

[0003] In the past, two steel wire ropes were used to tie the upper and middle positions of the material distribution chute. The steel wire ropes inserted through the central throat and the large manhole were used for lifting to align the back slot of the chute with the boom of the airtight box. The process required construction workers to enter the furnace and then climb onto the chute to hang the steel wire ropes. Due to the high temperature and high gas volume in the furnace, there were many unsafe factors. Utility Model Content

[0004] The purpose of the utility model is to provide a construction tool for quickly replacing the distribution chute of a blast furnace, which solves the hidden dangers of gas and high temperature in the construction process of replacing the distribution chute, reduces the difficulty of replacing the distribution chute, improves the efficiency of maintenance work, and achieves the goal of replacing the distribution chute safely, quickly and in a standard manner. It can quickly adjust the lifting position of the wire rope, balance the force center of the distribution chute, and achieve rapid alignment during the chute replacement process.

[0005] The utility model comprises a slot body 1, a lifting ear 2, a weight plate 3, fixing bolts 4, nuts 5, and a gasket 6; the lifting ears 2 are welded to the upper edges of both sides of the slot body 1, the weight plate 3 is installed at the tail of the slot body 1, and the fixing bolts 4, nuts 5, and gaskets 6 are pressed and fixed to the weight plate 3.

[0006] The slot body 1 includes side plates, reinforcing ribs and baffles. Baffles and rib plates are arranged in the middle of the two side plates for clamping the material chute. Lifting ears 2 are arranged on both sides and the tail end of the side plates. The lifting ears 2 on both sides of the side plates are used for distance adjustment during lifting. The tail lifting ears 2 are used for falling chains and winches to adjust the tool angle.

[0007] The side plates of the slot body 1 are made of 30 mm steel plates, and the reinforcing ribs and baffles are made of 40 mm steel plates.

[0008] The counterweight plate 3 can be removed at any time according to the needs on site.

[0009] The side and tail of the card slot body 1 are provided with a plurality of lifting ears for lifting and adjustment.

[0010] The slot body 1 is a "bow-shaped" structure, and the angle between the main body and the vertical line of the furnace body is fixed at 58° when the main body is hoisted.

[0011] The advantage of this utility model is that the chute can be quickly aligned and installed through the lever principle of lifting balance, which reduces labor input, greatly shortens construction time, ensures the construction safety of construction personnel, reduces the risk factor, improves construction efficiency, and creates conditions for early air supply to the blast furnace. The fast replacement tooling of the material distribution chute can be adjusted according to the actual construction conditions on site. This operation only requires 10 people and 7 hours, which can save labor costs of 15*16-7*10=170 working hours / time. This operation method shortens the construction of the material distribution chute by about 8 hours, and also significantly shortens the wind break time, improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the tooling structure of the utility model.

[0013] Figure 2 yes Figure 2 Top view of the structure.

[0014] Figure 3 It is a schematic diagram of the material chute replacement process.

[0015] In the figure: the slot body 1, the lifting ear 2, the counterweight 3, the fixing bolt 4, the nut 5, and the gasket 6. DETAILED DESCRIPTION

[0016] The utility model comprises a slot body 1, a lifting ear 2, a weight plate 3, fixing bolts 4, nuts 5, and a gasket 6; the lifting ears 2 are welded to the upper edges of both sides of the slot body 1, the weight plate 3 is installed at the tail of the slot body 1, and the fixing bolts 4, nuts 5, and gaskets 6 are pressed and fixed to the weight plate 3.

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention. Figure 1 and Figure 2 As shown, the utility model includes a tool slot body 1, which is an integral welded structure, and is made of 30mm steel plate to make the main body, and 40mm steel plate to make the baffle and rib plate to form the slot space; the lifting ears 2 are evenly distributed on the vertical plates on both sides and the tail, and are used to hang steel wire ropes and 10T fall chains, 10T winches for lifting and adjusting the installation angle; the counterweight plate 3 is used to balance the installation angle of the tooling after the material chute is fixed; the fixing bolts 4, nuts 5, and gaskets 6 are used to flexibly adjust the number of counterweight plates to achieve the unity of safety and balance.

[0018] (1) First, place the tool slot body 1 on the sleeper, making its tail slightly higher, and insert the chute disassembly arm crossbeam into the groove of the chute;

[0019] (2) Use two Φ20mm, 4m long steel wire ropes to pass through the side and tail lifting ears (2), and lift the tool slot body (1) and the counterweight (3) together. At this time, the counterweight side droops slightly, which is a balanced state;

[0020] (3) In a balanced state, hang a 20T fall chain on the small hook of the overhead crane, hang the chain of the fall chain on the lifting lug 2 at the tail of the dismantling arm and fix it, start the overhead crane to tension the wire rope and fall chain, and move the chute to the opposite side of the large manhole;

[0021] (4) Move the tool chute body 1 to pass the chute through the large manhole and send it to the center of the furnace throat. Continue to operate the fall chain to make the distribution chute form an angle of about 58° with the vertical line of the furnace;

[0022] (5) Move the angle a of the airtight box in a jog manner to make the inclination angle of the distribution chute reach 40°. At this time, operate the overhead crane to slowly move the chute toward the center line of the blast furnace so that the chute hanging point is embedded in the movable arm of the airtight box;

[0023] (6) Move the airtight box at angle a to rotate the airtight box arm support shaft to below the hanging point at the bottom of the material distribution chute, and then slowly lower the tool slot body 1 to completely compact the hanging point at the bottom of the chute with the airtight box arm support shaft;

[0024] (7) After confirming that the material distribution chute and the airtight box boom are in the correct position, lower the crane hook and use the fall chain to lift the counterweight upwards to achieve a no-load state for the tool slot body 1;

[0025] (8) When the tool holder body 1 is unloaded, the overhead crane is operated to move the chute removal arm toward the inside of the blast furnace until the tool holder body 1 is separated from the chute.

[0026] The disassembly sequence is the reverse.

[0027] The above-described embodiments are merely preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto.

Claims

1. A construction tool for quickly replacing a blast furnace distribution chute, characterized in that: The invention comprises a slot body (1), a lifting ear (2), a weight plate (3), a fixing bolt (4), a nut (5), and a gasket (6); the lifting ear (2) is welded to the upper edges of both sides of the slot body (1), the weight plate (3) is installed at the rear of the slot body (1), and the fixing bolt (4), the nut (5), and the gasket (6) are pressed and fixed to the weight plate (3).

2. The blast furnace distribution chute quick replacement construction tool according to claim 1 is characterized in that: The slot body (1) comprises side plates, reinforcing ribs and baffles, the baffles and reinforcing ribs are arranged between the two side plates, and lifting ears (2) are arranged at both sides and the tail end of the side plates.

3. The blast furnace distribution chute quick replacement construction tool according to claim 1 is characterized in that: The side plates of the slot body (1) are made of 30 mm steel plates, and the reinforcing ribs and baffles are made of 40 mm steel plates.

4. The blast furnace distribution chute quick replacement construction tool according to claim 1 is characterized in that: The slot body (1) is a "bow-shaped" structure, and when the main body is hoisted, the angle with the vertical line of the furnace body is fixed at about 58 degrees.

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