CN211169572U - Auxiliary device for replacing blast furnace spray pipe - Google Patents

Abstract

The utility model discloses an auxiliary device for replacing blast furnace spray pipes, which relates to the field of cleaning system maintenance of blast furnaces. There are two first and second hoisting beams arranged in parallel, the first hoisting beam is located directly above the spray pipe, a first electric hoist is installed on the first hoisting beam, and a tray is suspended at the bottom of the first electric hoist. A motor is installed on the tray, the rotating shaft of the motor is arranged facing the spray pipe, the front end of the rotating shaft is provided with an axially aligned pull rod, and the end of the pull rod facing the spray pipe is provided with a flange that can be docked with the spray pipe; the second hanging beam corresponds to At the outer position of the spray pipe body, a second electric hoist is installed on the second lifting beam, and a work safety platform for manual operation is suspended at the bottom of the second electric hoist. It is safe to replace the sprinkler pipe.

Description

Auxiliary device for replacing blast furnace spray pipe

technical field

The utility model relates to the field of maintenance in the field of cleaning systems of blast furnaces, in particular to an auxiliary device for replacing spray pipes of blast furnaces.

Background technique

The blast furnace is referred to as the DAVY tower, and the replacement of the nozzles on the tower involves many dangerous operations such as climbing, confined space, and gas. The blast furnace gas cleaning system cools and dedusts the by-product gas produced by the blast furnace. The scouring of the gas causes rapid wear of the nozzles, which reduces the dust removal effect and brings many subsequent problems. The environment in the DAVY tower is relatively bad at high altitude, restricted, and gas, which leads to the replacement of The difficulty increases. In the original technology, personnel need to enter the tower to replace the spray pipe, and use the hanging ladder to operate, and the risk factor increases. There are 10 nozzles, and the height drop is 20 meters. There is agglomeration on the inner wall of the tower, which sometimes causes smashing accidents. Due to the normal production of the blast furnace DAVY tower, online maintenance and inspection of the nozzles cannot be carried out, and can only be processed when the blast furnace is shut down. Therefore, designing an auxiliary replacement device that does not require personnel to climb and can replace the sprinkler pipe very quickly and safely is a problem that needs to be solved at present.

SUMMARY OF THE INVENTION

In view of the above problems, the utility model provides an auxiliary device for replacing the blast furnace spray pipe, and the specific scheme is as follows:

An auxiliary device for replacing blast furnace spray pipes, used for dismantling a plurality of spray pipes arranged on the side of a blast furnace, the plurality of spray pipes are arranged flush with each other, and one end of the spray pipes passes through a first end portion The flange is connected to the blast furnace, the other end of the spray pipe extends horizontally to the outside of the blast furnace, the end of the spray pipe extending out of the blast furnace is provided with a second end flange, and the auxiliary device includes a first column arranged on both sides of the blast furnace and a second end flange. The second column, the first column and the second column are connected with two first and second suspension beams arranged in parallel, the first suspension beam is located directly above the spray pipe, and the first suspension beam is installed on the first suspension beam. An electric hoist, a tray is suspended at the bottom of the first electric hoist, a motor is installed on the tray, the rotating shaft of the motor is arranged facing the flange of the second end of the spray pipe, the front end of the rotating shaft is provided with an axially aligned pull rod, and the rotating shaft and the pull rod pass through The flange is fixedly connected, and the end of the tie rod facing the spray pipe is provided with a third end flange that can be docked with the second end flange of the spray pipe; the second hanging beam corresponds to the outer position of the spray pipe body, A second electric hoist is installed on the second hanging beam, and a work safety platform for manual operation is suspended from the bottom of the second electric hoist.

Further, the second column is located on the side facing the second end flange, a lifting mechanism is arranged in the second column, a pressing block and a power supply are arranged in the lifting mechanism, and a wire rope electric winch is arranged on the rear side of the motor, The twisted rope in the electric winch is formed by intertwining the steel wire rope and the electric wire, the twisted rope is connected with the pressure block, the electric wire is branched from the twisted rope at the pressure block and connected to the power supply, and the electric wire is located at one end of the electric winch from the After the twisted rope is separated, it is connected to the motor.

Further, the bottom of each spray pipe is provided with a first support hook for supporting the spray pipe, and the first support hook is fixedly connected with the blast furnace.

Further, the motor is a servo motor.

Further, the bottom of the tray is hoisted with a spare spray pipe for replacement, and the side of the work safety platform facing the blast furnace is provided with a second hook that can support the spray pipe.

Compared with the prior art, the advantages of the present utility model are as follows:

1. The utility model realizes the rapid replacement of the spray pipe through the above-mentioned auxiliary replacement device.

2. The utility model does not require staff to climb and replace, which improves the safety.

Description of drawings

Fig. 1 is the structural drawing of the utility model;

Figure 2 is a side view of the work safety platform.

Reference number:

1. Spray pipe; 2. Blast furnace; 3. The first end flange; 4. The second end flange; 5. The first column; 6. The second column; 7. The first hanging beam; 8. The first Two hanging beams; 9, the first electric hoist; 10, the second electric hoist; 11, the pallet; 12, the motor; 13, the tie rod; 131, the tie rod support; 132, the bearing; 14, the third end flange; 15 , work safety platform; 16, lifting mechanism; 17, pressing block; 18, power supply; 19, electric wire rope winch; 20, first hook; 21, second hook; 22, twisted rope; 23, electric wire; 24, Spare sprinkler pipe.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, not all of the embodiments.

Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, with a specific orientation. Therefore, it should not be construed as a limitation on the present invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection, or indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Example 1

As shown in Figures 1 and 2, an auxiliary device for replacing the spray pipes 1 of a blast furnace 2 is used to disassemble a plurality of spray pipes 1 arranged on the side of the blast furnace 2, and the plurality of spray pipes 1 are flush up and down The bottom of each spray pipe 1 is provided with a first support hook 20 supporting the spray pipe 1, the first support hook 20 is fixedly connected with the blast furnace 2, and one end of the spray pipe 1 passes through the first end The first flange 3 is connected to the blast furnace 2, the other end of the spray pipe 1 extends horizontally to the outside of the blast furnace 2, the end of the spray pipe 1 extending out of the blast furnace 2 is provided with a second end flange 4, and the auxiliary device includes a The first column 5 and the second column 6 on both sides of the blast furnace 2, the first column 5 and the second column 6 are connected with two parallel arranged first suspension beams 7 and second suspension beams 8, the first suspension beam 7 Right above the spray pipe 1, a first electric hoist 9 is installed on the first suspension beam 7, a tray 11 is suspended at the bottom of the first electric hoist, a motor 12 is installed on the tray 11, and the rotating shaft of the motor 12 is facing the spray pipe The second end flange 4 of the 1 is provided, the front end of the rotating shaft is provided with an axially aligned pull rod 13, the rotating shaft and the pull rod 13 are fixedly connected through the flange, the tray 11 is located in the middle position of the pull rod 13 and is provided with a pull rod support 131, the pull rod support The top of 131 is provided with a bearing 132 sleeved on the outside of the tie rod 13, and the end of the tie rod 13 facing the spray pipe 1 is provided with a third end flange 14 that can be docked with the second end flange 4 of the spray pipe 1, The bottom of the tray 11 is hung with a spare spray pipe 1 for replacement. The side of the work safety platform 15 facing the blast furnace 2 is provided with a second hook 21 that can support the spray pipe 1. The second column 6 On the side facing the second end flange 4 .

The second column 6 is provided with a lifting mechanism 16, the lifting mechanism 16 is a lifting platform suspended by an electric hoist fixed on the top of the second column, and a pressing block 17 and a power source 18 are arranged in the lifting platform, and the power source is a battery. The rear side of the motor 12 is provided with a wire rope electric winch 19. The twisted rope 22 in the electric winch is formed by intertwining the steel wire rope and the electric wire 23. The twisted rope 22 is connected with the pressure block 17, and the pressure block 17 can ensure that the pull rod 13 is connected to the sprayer. The balance of the tray 11 after the pipe 1 is docked can be ensured by the connection between the twisted rope 22 and the pressing block 17 to ensure that the tray 11 will not be too inclined to the side connected with the spray pipe 1; the wire 23 is located at the pressing block 17 from the twisted rope. 22 is branched out and connected to the power supply 18 , and the electric wire 23 is connected to the motor 12 after being branched out from the twisted rope 22 at one end of the electric winch. The motor 12 is a servo motor 12; the second hoisting beam 8 corresponds to the outer position of the pipe body of the spray pipe 1, a second electric hoist 10 is installed on the second hoisting beam 8, and a provider is suspended from the bottom of the second electric hoist 10. Work Safety Platform for Work 15.

The first electric hoist 9, the second electric hoist 10, the lifting mechanism 16, the electric winch and the motor 12 are all electrically connected to the PLC main control board, and also includes a remote terminal for controlling the PLC main control board. The above-mentioned institutions assist in the work.

Example 2

A method for replacing the spray pipe 1 based on the above scheme, comprising the following steps:

Step 1, respectively control the first electric hoist 9 and the second electric hoist 10 so that the tray 11 and the work safety platform 15 are flush with the same height of the spray pipe 1 to be removed, and the lifting mechanism 16 follows the movement of the first electric hoist 9. The height is adjusted synchronously to keep the lift mechanism 16 flush with the tray 11;

Step 2, control the second electric hoist to move to the position of the first end flange 3 of the spray pipe 1, and the staff releases the connection state of the first end flange 3 and the blast furnace 2;

Step 3: After completing the previous step, control the second electric hoist to move to the position of the second end flange 4 of the spray pipe 1, and control the first electric hoist 9 to move to the position of the second end flange 4 at the same time. The third end flange 14 of the end of the tie rod 13 is butted with the second end flange 4 of the spray pipe 1. During the movement of the first electric hoist 9, the twisted rope 22 of the electric winch is controlled to release the twisted rope 22, so that the twisted rope 22 is released. The length of the rope 22 matches the distance between the first electric hoist 9 and the second column 6;

Step 4, controlling the motor 12 to rotate 90° clockwise, the rotating shaft of the motor 12 drives the first end flange 3 of the spray pipe 1 to rotate upward by 90°;

Step 5, control the second electric hoist 10 to move to the position with the tray 11, control the suspending rope of the second electric hoist 10 to descend, so that the work safety platform 15 is lowered to the height of the spare spray pipe 1, and the staff pulls the spare spray Pipe 1 into the hook, and release the connection between the spare spray pipe 1 and the bottom of the tray 11;

Step 6, control the first electric hoist 9 away from the blast furnace 2, drive the spray pipe 1 away from the blast furnace 2, control the twisted rope 22 of the electric winch to retract the twisted rope 22, so that the length of the twisted rope 22 matches the distance between the first electric hoist 9 and the second electric hoist. The distance of the column 6;

Step 7: Control the suspending rope of the second electric hoist 10 to raise the height of the original spray pipe 1, then control the second electric hoist 10 to move to the support hook of the original spray pipe 1, and install the spare spray pipe 1 to the and fix the first end flange 3 of the spare spray pipe 1 with the blast furnace 2 .

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that : it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the various embodiments of the present utility model Scope of technical solutions.

Claims (5)

1. an auxiliary device for replacing blast furnace spray pipes, for dismantling a plurality of spray pipes arranged on the side of the blast furnace, a plurality of spray pipes are arranged flush up and down, and one end of the spray pipes passes through the first The end flange is connected to the blast furnace, the other end of the spray pipe extends horizontally to the outside of the blast furnace, and the end of the spray pipe extending out of the blast furnace is provided with a second end flange. The first column and the second column on the side are connected with two parallel first hanging beams and second hanging beams, the first hanging beam is located just above the spray pipe, the first hanging beam is A first electric hoist is installed on the hanging beam, a tray is suspended at the bottom of the first electric hoist, and a motor is installed on the tray. The tie rod, the rotating shaft and the tie rod are fixedly connected by a flange, and the end of the tie rod facing the spray pipe is provided with a third end flange that can be butted with the second end flange of the spray pipe; the second hanging beam corresponds to the spray pipe On the outer side of the pipe body, a second electric hoist is installed on the second hoisting beam, and a work safety platform for manual operation is suspended from the bottom of the second electric hoist. 2 . The auxiliary device for replacing blast furnace spray pipes according to claim 1 , wherein the second column is located on the side facing the second end flange, and the second column is provided with a Lifting mechanism, a pressing block and a power supply are arranged in the lifting mechanism, a wire rope electric winch is arranged on the rear side of the motor, and the twisted rope in the electric winch is formed by intertwining a steel wire rope and a wire, the twisted rope is connected with the pressing block, and the wire The wire is branched from the twisted rope at the pressing block and connected to the power supply, and the electric wire is connected to the motor after being branched from the twisted rope at one end of the electric winch. 3 . The auxiliary device for replacing blast furnace spray pipes according to claim 2 , wherein the bottom of each spray pipe is provided with a first support hook for holding the spray pipe, and the first support hook is provided at the bottom of each spray pipe. The support hook is fixedly connected with the blast furnace. 4 . The auxiliary device for replacing blast furnace spray pipes according to claim 3 , wherein the motor is a servo motor. 5 . 5 . The auxiliary device for replacing blast furnace spray pipes according to claim 4 , wherein a spare spray pipe for replacement is hoisted at the bottom of the tray, and the work safety platform faces the side of the blast furnace. 6 . There is a second bracket hook that can bracket the spray pipe.

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