Mixing furnace brake rotary disc hand brake

Abstract

The utility model discloses a kind of mixed iron furnace brake holding rotary table hand brake, including steel wire rope, the first end of steel wire rope is fixedly connected with the end of brake holding accident release lever;The second end of steel wire rope is connected on the reel in the control chamber of mixed iron furnace;Several fixed pulleys are provided on the arrangement path of steel wire rope;The fixed pulley closest to the first end is located at the displacement terminal of the free end of accident release lever;The utility model cooperates by steel wire rope and fixed pulley, force of accident release lever is transferred from operating room to control room, increase operating space, operator can operate without reaching operating room, make operation more convenient and fast;Simultaneously, lever type operation is converted into rotating operation, reduce the force requirement to operator, can make single operator can independently complete operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of safety equipment for blast furnaces, and particularly relates to a blast furnace brake rotary handbrake. Background Technology

[0002] In the iron and steel metallurgical industry, the blast furnace is an important piece of equipment used for storing and mixing molten iron. If a power outage or malfunction occurs during the tapping process of a traditional blast furnace, measures must be taken quickly to return the furnace to its zero position to prevent molten iron from overflowing and equipment from tipping over, thus ensuring production safety.

[0003] When the blast furnace tilts downwards too much, the anti-tipping protection system stops the blast furnace from tilting by opening the brake or restores it to an upright position by its own weight, preventing the blast furnace from tipping over due to weightlessness.

[0004] If the anti-tipping protection system suddenly loses power, the emergency release lever needs to be manually pulled to rotate like a "knife switch" and release the brake. Then, the blast furnace can return to its upright position under its own weight. However, this method requires an operator to enter the site, and pulling the brake lever requires considerable strength, which is usually difficult for one operator to complete independently. Utility Model Content

[0005] The purpose of this invention is to provide a handbrake for a blast furnace brake rotary table to reduce the difficulty of releasing the brake lever in case of an accident.

[0006] The present invention adopts the following technical solution: a handbrake for a blast furnace, comprising a steel wire rope, the first end of which is fixedly connected to the end of the emergency release lever of the handbrake; wherein the handbrake is installed on the rotating shaft of the blast furnace; The second end of the wire rope is connected to the drum inside the control room of the blast furnace; Several fixed pulleys are set along the route of the wire rope; The fixed pulley closest to the first end is located at the displacement endpoint of the free end of the emergency release lever.

[0007] The beneficial effects of this utility model are as follows: This utility model uses a combination of wire rope and fixed pulley to transfer the force of the emergency release lever from the operating room to the control room, increasing the operating space. Operators do not need to go to the operating room to operate, making the operation more convenient and faster. At the same time, it converts the lever operation into a rotation operation, reducing the force requirements of the operator and enabling a single operator to complete the operation independently. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of a blast furnace brake turntable handbrake according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the drum without a stop bar in this embodiment of the present invention; Figure 3 This is a schematic diagram of the structure when the stop bar is installed at the drum in an embodiment of this utility model.

[0009] Among them: 10. Fixed pulley; 20. Steel wire rope; 30. Blast furnace shaft; 40. Emergency release lever; 50. Fixing plate; 60. Drum; 70. Handle; 80. Wall; 51. Insertion hole; 52. Fixed shaft; 53. Stop bar. Detailed Implementation

[0010] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0011] In the iron and steel metallurgical industry, the safety of blast furnace operation is of paramount importance. Existing technologies have several drawbacks, such as inconvenience in emergency operations and limited stroke.

[0012] The blast furnace typically rotates via a shaft 30. A brake is installed on the shaft 30, which rotates with the furnace as it rotates. In the event of a power outage or emergency, the brake automatically releases, allowing the shaft 30 to return to its original position and preventing the furnace from tipping over due to weightlessness. If the brake fails to release automatically, the shaft 30 will not return to its original position, potentially causing the furnace to tip over.

[0013] At this point, the operator needs to manually operate the emergency release lever 40 from the control room. The emergency release lever 40 is located at the bottom of the blast furnace control room and is a lever-type design. This design has several drawbacks. First, in an emergency requiring the operation of the emergency release lever 40, due to space limitations, personnel often cannot reach the scene immediately (personnel need to run from the control room to the control room) to operate it, thus delaying the optimal response time and increasing the risk and loss of an accident. Second, the lever-type emergency release lever 40, due to space limitations, has a limited stroke and is difficult to effectively handle emergency situations such as the blast furnace tilting forward and being unable to be raised. If this occurs, molten iron is very likely to overflow, causing a serious safety accident. Furthermore, a single operator may not have enough strength to pull the emergency release lever 40, which poses a significant safety risk to production, seriously threatening the lives of operators and the normal production order of the enterprise, while also causing considerable economic losses.

[0014] The present invention aims to solve the problem of brake lock-up in the blast furnace during operation in the prior art, as well as the problem that it is difficult for the operator to operate the emergency release lever 40 alone.

[0015] This utility model discloses a handbrake for a blast furnace, such as... Figure 1As shown, the system includes a wire rope 20, the first end of which is fixedly connected to the end of the emergency release lever 40 of the brake; the brake is installed on the blast furnace shaft 30; the second end of the wire rope 20 is connected to the drum 60 in the control room of the blast furnace; several fixed pulleys 10 are arranged along the path of the wire rope 20; the fixed pulley 10 closest to the first end is located at the displacement endpoint of the emergency release lever 40.

[0016] This utility model uses the steel wire rope 20 and the fixed pulley 10 to transfer the force of the emergency release lever 40 from the operator's room to the control room (where operators are located during production), increasing the operating space and allowing operators to operate without having to go to the operator's room, making the operation more convenient and faster; at the same time, it converts the lever operation into a rotation operation, reducing the force requirements of the operator and enabling a single operator to complete the operation independently.

[0017] This invention adds a column to the triangular plate of the brake on the hoisting mechanism of the blast furnace (i.e., the end point of the emergency release lever 40), and installs a fixed pulley 10 on the column. The axis of the fixed pulley 10 is perpendicular to the plane of the trajectory of the emergency release lever 40. A steel wire rope 20 is attached to the end of the emergency release lever 40, extending to the control room. In this way, in the event of an emergency where the blast furnace tilts forward and cannot be raised, the operator can independently operate the handle 70 to wind the steel wire rope 20, thereby releasing the brake. The blast furnace can then be slowly raised under the force of gravity. This innovative design not only breaks through the limitations of the traditional position and structure of the emergency release lever 40, but also greatly improves the timeliness and effectiveness of operation, fundamentally preventing molten iron spillage and safety accidents.

[0018] A fixing plate 50 is installed on the wall 80 of the control room; the drum 60 is rotatably connected to the fixing plate 50. By installing the fixing plate 50 on the wall 80, a suitable installation height can be selected according to the operator's height. Moreover, by installing it on the wall 80, the fixing plate is supported by the wall 80, ensuring its stability.

[0019] A fixed shaft 52 perpendicular to the fixed plate 50 is provided, and the drum 60 is mounted on the fixed shaft 52. The fixed shaft 52 makes the operation of the drum 60 more convenient. Furthermore, a bearing can be installed between the fixed shaft 52 and the drum 60 to further reduce the required force and simplify operation. One end of the fixed shaft 52 is fixed to the fixed plate 50, which can be achieved through welding, flange connection, or other methods. The drum 60 is mounted on its outer circumference, and a nut can be threaded onto the other end of the fixed shaft 52 to limit the movement of the drum 60.

[0020] The end of the wire rope 20 can be welded to the drum 60 to ensure the stability of the connection between the two. If the drum is made of a non-weldable material, the wire rope 20 can be wound around the drum 60 several times and locked, or the end of the wire rope 20 can be passed through the surface of the drum 60 and extended into its internal space to achieve the purpose of fixing.

[0021] Handles 70 are evenly spaced on the outer periphery of the drum 60. The handles 70 make it easier for the operator to apply force to the drum 60, reducing the amount of force required.

[0022] As a specific implementation, the handle 70 is a straight rod arranged radially along the drum 60. The straight rod design further reduces the applied force, effectively adding a lever to the drum 60. The force-applying part of the straight rod can also be designed with an ergonomic structure. Additionally, a limit device is detachably installed on the fixing plate 50, located along the rotation path of the straight rod. This limit device design prevents accidental contact when operation is not needed, and also limits the handle 70 when the drum 60 rotates to a predetermined position, freeing the operator's hands. Normally, the emergency release lever 40 needs to be held for a few seconds to reset the blast furnace; however, in case of maintenance or other special circumstances, the brake can be kept released, freeing the operator's hands.

[0023] In one embodiment, such as Figure 2 and Figure 3 As shown, the fixed plate 50 has an insertion hole 51; the limiting device is a stop bar 53, the end of which is inserted into the insertion hole. This insertion method is simpler and more convenient, allowing the operator to hold the handle 70 with one hand and remove or install the stop bar 53 with the other. Alternatively, the insertion hole can be replaced with a threaded hole, and the stop bar 53 can be a straight rod with threads on the head, with the two connected by threads.

[0024] It is important to first select appropriate column material and dimensions, and install the column at the triangular plate of the hoisting mechanism brake, ensuring a secure installation. Install the first fixed pulley 10 at the top of the column, ensuring that the fixed pulley 10 can rotate smoothly. Then, select a suitable wire rope 20, fix the first end of the wire rope 20 to the emergency release lever 40, and after passing through several fixed pulleys 10, the second end of the wire rope extends to the control room. A drum 60 is installed in the control room, and a handle 70 is installed on the drum 60. The handle 70 is fixedly connected to the drum 60. Rotating the handle 70 drives the drum 60 to rotate, thus winding the wire rope 20. The column material has high strength and good corrosion resistance, possessing sufficient strength and stability.

[0025] When selecting the fixed pulley 10, the focus should be on its load-bearing capacity and rotational flexibility. During installation, it is essential to ensure a secure and reliable connection between the pulley and the column. The wire rope 20 should be made of a material with high strength and wear resistance. Its diameter and length should be selected appropriately based on the actual operating distance and tension requirements.

[0026] Regarding the operating procedure, when the blast furnace tilts forward and cannot be lifted, the operator quickly operates handle 70, winds the steel wire rope 20, and pulls the emergency release brake 40, causing the brake to release the blast furnace shaft 30. Under the action of backward gravity, the blast furnace slowly lifts and returns to its original position. Throughout the process, close attention must be paid to the lifting of the blast furnace to ensure that it is lifted slowly and smoothly under the action of backward gravity.

[0027] This invention achieves a reasonable layout for the emergency release lever 40, enabling operators to operate quickly in emergencies, effectively preventing molten iron spillage and safety accidents, and ensuring the safety of personnel and equipment. The operation method of the emergency release lever 40 has been changed from a lever type to a rotary type, increasing the stroke and enabling it to cope with various emergency situations, ensuring safe and stable production. The device has a simple structure, is easy to install and maintain, and reduces enterprise costs.

[0028] Crucially, the system achieves a reasonable operating position, ensuring that operators can operate from the control room in the shortest possible time in emergency situations. This timely and efficient avoidance of molten iron spillage and safety accidents caused by the inability to lift the blast furnace forward provides a strong guarantee for the safety of operators and the integrity of the equipment.

Claims

1. A rotary handbrake for a blast furnace, characterized in that, Includes a steel wire rope (20), the first end of which is fixedly connected to the end of the emergency release lever (40) of the brake; wherein the brake is installed on the blast furnace shaft (30); The second end of the wire rope (20) is connected to the drum (60) in the control room of the blast furnace; Several fixed pulleys (10) are provided on the arrangement path of the wire rope (20); The fixed pulley (10) closest to the first end is located at the displacement endpoint of the free end of the emergency release lever (40).

2. The handbrake of the blast furnace as described in claim 1, characterized in that, A fixing plate (50) is installed on the wall (80) of the control room; The roll (60) is rotatably connected to the fixed plate (50).

3. The handbrake of the blast furnace as described in claim 2, characterized in that, The fixing plate (50) is provided with a fixing shaft (52) perpendicular to it, and the drum (60) is fitted on the fixing shaft (52).

4. A handbrake for a blast furnace as described in claim 2 or 3, characterized in that, Handles (70) are provided at intervals on the outer periphery of the roll (60).

5. The handbrake of the blast furnace as described in claim 4, characterized in that, The handle (70) is a straight rod arranged radially along the drum (60); A limiting device is detachably installed on the fixing plate (50), and the limiting device is located on the rotation path of the straight rod.

6. The handbrake of the blast furnace as described in claim 5, characterized in that, The fixing plate (50) has insertion holes; The limiting device is a stop bar (53), and the end of the stop bar (53) is inserted into the socket.

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