An emergency cover moving system, kit and method for the main runner A cover

Abstract

The present invention relates to an emergency cover moving system, kit and method for the main runner A cover, belonging to the technical field of ironmaking blast furnace operation. The emergency cover moving system includes a first fixed pulley and a second fixed pulley; the first fixed pulley is fixedly arranged on the side of the A cover away from the main runner, and the second fixed pulley is arranged on the side of the A cover away from the blast furnace; the emergency cover moving kit includes the above-mentioned emergency cover moving system, and also includes a towing rope and a number of rolling rods; the emergency cover moving method provides the above-mentioned emergency cover moving kit, including the following steps: the towing rope sequentially bypasses the first fixed pulley and the second fixed pulley, the traveling crane lifts one end of the A cover away from the blast furnace, places rolling bars between the A cover and the main runner, bypasses the towing rope around the second fixed pulley, and the traveling crane drives the A cover to move towards the lifting range of the traveling crane. The present invention utilizes the existing traveling crane in the tapping yard, can perform emergency movement on the A cover, avoids the occurrence of production accidents caused by the inability to block the taphole, reduces the accident handling cost and shortens the tool preparation time.

Description

Technical Field

[0001] The present invention belongs to the technical field of ironmaking blast furnace operation, and relates to an emergency cover moving system, kit and method for the main runner A cover. Background Art

[0002] During the design process of modern blast furnaces, in order to reduce the flue gas generated by blast furnace tapping and the heat radiation of the molten iron in the main runner of the blast furnace, a runner cover is usually provided above the main runner. The runner cover is generally divided into four sections A, B, C, and D, and the B, C, and D covers are hoisted into place by the tapping yard crane. Please refer to Figure 1 , since the A cover is located below the tuyere platform and the tapping yard crane cannot hoist it. Therefore, a hydraulic cover moving machine is usually provided to move the A cover. The A cover is static on one side of the main runner when there is no tapping. After the taphole drilling machine drills the taphole, the cover moving machine lifts the A cover and moves it above the main runner and then puts it down. Before the end of tapping, the cover moving machine lifts the A cover and moves it to one side of the main runner and then puts it down, and then the clay gun machine plugs the taphole.

[0003] In the actual production process, since the weight of the A cover is about 20 tons, if there is a failure of the cover moving machine, or the A cover moves on the main runner and the cover moving machine cannot hook the lifting lug on the cover, it is very difficult to have other methods to move the A cover on site, resulting in the clay gun machine being blocked by the A cover and unable to plug the taphole, causing major production safety accidents. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an emergency cover moving system and method for the main runner A cover, which can move the A cover to prevent the A cover from blocking the working route of the clay gun machine and the resulting safety accidents when the cover moving machine fails.

[0005] To achieve the above object, the present invention provides the following technical solution: An emergency cover moving system for the main runner A cover, comprising a first fixed pulley and a second fixed pulley; the first fixed pulley is fixedly arranged on the side of the A cover away from the main runner, and the second fixed pulley is arranged on the side of the A cover away from the blast furnace; the distance from the second fixed pulley to the blast furnace is greater than the distance from the first fixed pulley to the blast furnace, and the distance from the second fixed pulley to the main runner is less than the distance from the first fixed pulley to the main runner.

[0006] Optionally, the first fixed pulley and the second fixed pulley are arranged along the center line direction of the main runner.

[0007] Optionally, the first fixed pulley is arranged on the tuyere platform, and the second fixed pulley is arranged on the ground within the hoisting range of the crane.

[0008] An emergency cover moving kit for the main runner A cover, including the emergency cover moving system for the main runner A cover as described above, further includes a towing rope and a number of rolling bars. One end of the towing rope is connected to the A cover, and the other end of the towing rope is connected to the overhead crane.

[0009] Optionally, the towing rope is connected to the lifting lug of the A cover.

[0010] Optionally, the towing rope is a steel wire rope.

[0011] Optionally, the end of the towing rope close to the overhead crane is connected to the hook of the overhead crane.

[0012] Optionally, several of the rolling bars are placed in sequence within the lifting range of the overhead crane.

[0013] An emergency cover moving method for the main runner A cover, providing the emergency cover moving kit for the main runner A cover as described above, includes the following steps:

[0014] (1) Connect the end of the towing rope close to the A cover to the end of the A cover away from the blast furnace, and pass the towing rope around the first fixed pulley and the second fixed pulley in sequence; lift the overhead crane, and the overhead crane lifts the end of the A cover away from the blast furnace through the second fixed pulley and the first fixed pulley. Place the rolling bars between the A cover and the main runner, and lower the overhead crane to place the end of the A cover away from the blast furnace on the rolling bars;

[0015] (2) Connect the end of the towing rope close to the A cover to the end of the A cover away from the blast furnace, and pass the towing rope around the second fixed pulley. Lift the overhead crane, and the overhead crane drives the A cover to move towards the lifting range of the overhead crane through the towing rope and the rolling bars;

[0016] Optionally, several rolling bars are placed along the center line direction of the main runner, and the overhead crane drives the A cover to move along the center line direction of the main runner towards the lifting range of the overhead crane.

[0017] The beneficial effects of the present invention are as follows: It can be widely used in the operations during the blast furnace production. When the A cover of the main runner cannot be removed due to external reasons, it can perform emergency movement on the A cover, avoiding the occurrence of production accidents caused by the inability to block the iron notch, and reducing the economic losses of the blast furnace caused by accidents. At the same time, this method utilizes the existing overhead crane in the tapping yard, no longer uses other external large-scale lifting equipment, reducing the accident handling cost and shortening the equipment preparation time.

[0018] Other advantages, objectives, and features of the present invention will be described to some extent in the subsequent description, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following description. Brief Description of the Drawings

[0019] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail and preferably below in conjunction with the accompanying drawings, where:

[0020] Figure 1 It is a schematic layout diagram of the emergency cover moving system for the main trough A cover;

[0021] Figure 2 It is a schematic diagram of step S1 in the embodiment;

[0022] Figure 3 It is a schematic diagram of step S2 in the embodiment;

[0023] Figure 4 It is a schematic diagram of step S3 in the embodiment;

[0024] Figure 5 It is a schematic diagram of step S4 in the embodiment;

[0025] Figure 6 It is a schematic diagram of step S5 in the embodiment.

[0026] Reference numerals: cover A 1, first fixed pulley 2, traveling crane hook 3, second fixed pulley 4, towing rope 5, roller 6, main trough 7, tuyere platform 8, blast furnace 9. Detailed implementation manners

[0027] The following illustrates the implementation manners of the present invention through specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0028] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to the present invention; for better illustrating the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, and do not represent the dimensions of actual products; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0029] In the drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is 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. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be construed as a limitation to the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] Please refer to Figures 2 to 6 , which is the implementation process of an emergency cover moving method for the main trough A cover, and provides an emergency cover moving kit for the main trough A cover. The emergency cover moving kit for the main trough A cover includes an emergency cover moving system for the main trough A cover, a towing rope 5 and a plurality of rolling rods. The emergency cover moving system for the main trough A cover includes a first fixed pulley 2 and a second fixed pulley 4. The first fixed pulley 2 and the second fixed pulley 4 are arranged along the center line direction of the main trough 7. The first fixed pulley 2 is fixedly arranged on the side of the A cover 1 away from the main trough 7, and the second fixed pulley 4 is arranged on the side of the A cover 1 away from the blast furnace 9. The distance from the second fixed pulley 4 to the blast furnace 9 is greater than the distance from the first fixed pulley 2 to the blast furnace 9, and the distance from the second fixed pulley 4 to the main trough 7 is less than the distance from the first fixed pulley 2 to the main trough 7. In this embodiment, the first fixed pulley 2 is arranged on the tuyere platform 8, and the second fixed pulley 4 is arranged on the ground within the lifting range of the crane. The towing rope 5 is a steel wire rope. One end of the towing rope 5 is connected to the lifting lug of the A cover 1, and the other end of the towing rope 5 is connected to the hook of the crane.

[0031] It includes the following steps:

[0032] S1: Connect the end of the towing rope 5 close to the A cover 1 to the lifting lug at the end of the A cover 1 away from the blast furnace 9, and pass the towing rope 5 around the first fixed pulley 2 and the second fixed pulley 4 in sequence;

[0033] S2: Lift the crane hook 3. The crane hook 3 drives the towing rope 5 to lift the end of the A cover 1 away from the blast furnace 9 through the second fixed pulley 4 and the first fixed pulley 2, and place a plurality of rolling bars 6 along the center line direction of the main trough 7 between the A cover 1 and the main trough 7.

[0034] S3: Lower the crane hook 3, place the end of the A cover 1 away from the blast furnace 9 on the rolling bar 6, connect the end of the towing rope 5 close to the A cover 1 to the lifting lug at the end of the A cover 1 away from the blast furnace 9, and pass the towing rope 5 around the second fixed pulley 4;

[0035] S4: Lift the crane hook 3. The crane hook 3 drives the A cover 1 to move along the center line direction of the main trough 7 towards the lifting range of the crane through the towing rope 5, the second fixed pulley 4 and the rolling rod;

[0036] S5: The traveling hook 3 lifts the A cover 1, providing space for the mud gun to stop the opening.

[0037] The present invention can be widely used in the operations during blast furnace production. When the A cover of the main trough cannot be moved due to external reasons, it can perform emergency movement on the A cover, avoiding the occurrence of production accidents caused by the inability to stop the taphole and reducing the economic losses of the blast furnace caused by accidents. At the same time, this method utilizes the existing gantry crane in the tapping yard, no longer uses other external large-scale lifting equipment, reducing the accident handling cost and shortening the tool preparation time.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the present technical solution, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An emergency cover moving kit for the main runner A cover, Characterized in that: It includes an emergency cover moving system for the main runner A cover, and the emergency cover moving system includes a first fixed pulley and a second fixed pulley; The first fixed pulley is fixedly arranged on the side of the A cover away from the main runner, and the second fixed pulley is arranged on the side of the A cover away from the blast furnace; The distance from the second fixed pulley to the blast furnace is greater than the distance from the first fixed pulley to the blast furnace, and the distance from the second fixed pulley to the main runner is less than the distance from the first fixed pulley to the main runner; The first fixed pulley and the second fixed pulley are arranged along the center line direction of the main runner; The first fixed pulley is arranged on the tuyere platform, and the second fixed pulley is arranged on the ground within the lifting range of the crane; The emergency cover moving kit further includes a towing rope and a number of rolling bars. One end of the towing rope is connected to the A cover, and the other end of the towing rope is connected to the crane; The end of the towing rope close to the crane is connected to the hook of the crane; A number of rolling bars are placed in sequence towards the lifting range of the crane.

2. The emergency cover moving kit for the main runner A cover according to claim 1, Characterized in that: The towing rope is connected to the lifting lug of the A cover.

3. The emergency cover moving kit for the main runner A cover according to claim 1, Characterized in that: The towing rope is a steel wire rope.

4. An emergency cover moving method for the main runner A cover, providing the emergency cover moving kit for the main runner A cover according to any one of claims 1-3, Characterized in that, It includes the following steps: Connect the end of the towing rope close to the A cover to the end of the A cover away from the blast furnace, and pass the towing rope around the first fixed pulley and the second fixed pulley in sequence; Lift the crane. The crane lifts the end of the A cover away from the blast furnace through the second fixed pulley and the first fixed pulley. Place rolling bars between the A cover and the main runner. Lower the crane and place the end of the A cover away from the blast furnace on the rolling bars; Connect the end of the towing rope close to the A cover to the end of the A cover away from the blast furnace, pass the towing rope around the second fixed pulley, lift the crane, and the crane drives the A cover to move towards the lifting range of the crane through the towing rope and the rolling bars.

5. The emergency cover moving method for the main runner A cover according to claim 4, Characterized in that: A number of rolling bars are placed along the center line direction of the main runner, and the crane drives the A cover to move along the center line direction of the main runner towards the lifting range of the crane.

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