TR2021021784A2 - PROTECTIVE VISOR - Google Patents

Abstract

The invention is related to a protective visor (100) that will prevent harm to employees during compulsory work under the converter and at the same time ensure the continuity of production. Its feature is; It contains a visor structure (20) that opens and closes with the drive it receives from actuators.

Description

DESCRIPTION PROTECTIVE SHIELD Technical Field The invention is related to a compact visor with a movement mechanism that will prevent heavy parts (<200 kg) that may fall from above during the work carried out under the converter in the steel mill facility, from harming the employees in the mandatory work to be done under the converter, and at the same time ensure the continuity of production. Known State of the Technique In this invention, a compact visor with a movement mechanism was designed that will prevent heavy parts (<200 kg) that may fall from above during the work carried out under the converter in the steel mill facility, from harming the employees in the mandatory work to be done under the converter, and at the same time ensure the continuity of production, and thus contribute to OHS and production. It is aimed to contribute to its continuity. Liquid steel production is carried out in converters at the steel mill facility. The liquid steel prepared in the converter is discharged into the steel casting crucible on the transfer cart, and the slag is discharged into the slag pot, and the transfer cart advancing on rails carries the liquid steel to the next station for processing and the slag to the slag disposal facility. After the process of discharging liquid steel or slag into the crucible on the transfer cart under the converter, there is a need to clean the rails on which the transfer cart moves. The staff cleans these rails. During cleaning, debris and scales on the side wall surfaces as a result of scrap pieces and liquid steel splashes from the upper elevations create a risk in terms of occupational safety by causing the danger of falling on the cleaning personnel during rail cleaning. In order to prevent this risk and ensure continuity of production, a movable guard system has been designed under the converter section of the steel mill. From the converters, the liquid steel is charged to the steel casting crucible and the slag remaining at the bottom is charged to the slag pot. During the charging of liquid steel/slag from the converters to the steel ladle or slag pot, hot metal splashes out of the ladle. The gaps in the semi-walls of the converter working area and the movement areas of the steel casting/slag ladle cars cannot be closed, and the scrap pieces charged to the converter falling from these gaps and the liquid steel/slag spatters accumulated on the side walls fall on the steel casting ladle transfer car track. Spilled and falling materials accumulate on the transfer cart rails. The falling of these mentioned parts during the cleaning of the rails poses a high risk in terms of OHS for the personnel working during the cleaning. In addition, due to these falling parts, the continuity of converter liquid steel production in the Steel Mill Facility is disrupted. In the literature research, a Chinese utility model titled "Automatic Slag Cleaning Device for Steel/Slag Ladle Cart Rails", numbered CN203863007U, belonging to FANGDA SPECIAL STEEL SCIENCE & TECH CO LTD, was found. The useful model subject to the invention is related to the slag cleaning device designed to clean the steel/slag trolley rails. During the pouring of liquid steel in the converter, slag and liquid steel are also spilled onto the rails, and after being poured, these residues can solidify and remain between the rails. In order to solve this problem in the invention, a shovel is mounted in front of the steel/slag ladle car body. While the shovel is being mounted, a stopper block (4) is mounted under the support (3), the support (3) is hinged to the upper end of the shovel arm plate. A plow is attached to the bottom of the plow arm plate. The steel slag on the rails is pushed into the slag pit while the steel/slag crucible car is running. Thus, the problem of slag accumulation on the steel/slag was solved with the help of the slag crucible car, the derailment accident caused by the slag accumulation was prevented and the danger of manual cleaning during the melting process in the converter was eliminated. The main claim of the invention is as follows; The automatic slag cleaning device integrated into the steel / slag crucible car is located under the body of the steel / slag crucible car and is arranged to clean the steel / slag between the rails. The feature of the automatic slag cleaning device subject to the invention is; It is the installation of a shovel in front of the body of the steel / slag ladle car. There is a support (3) and a stopper (4) at the front of the car. The support (3) is hinged to the upper end of the shovel (21) and the shovel plate (22) with the help of the shovel arms (2). ) is connected to the bottom and the shovel arms (2) are placed at both ends of the shovel (21). was preserved. Another application encountered in the literature research is the Chinese patent titled "Crucible Trolley", numbered CN104014778A, belonging to PANZHIHUA IRON & STEEL RES. During the discharge of liquid steel from the converter, high temperature liquid steel and steel slag from the converter may splash on the crucible. For this reason, a protection device has been introduced to prevent the accumulation of liquid steel and steel slag on the crucible and to increase the life of the crucible. The main claim of this invention is as follows; It is a crucible car containing a body (2) and a crucible (1) placed on the body (2) for liquid steel. Its feature is that it includes a protection device (3) on the said body to prevent slag accumulation on the crucible. In the subclaims of this patent, protection is requested for features such as the form, connection and dimensions of the protection device. Technical Problems That the Invention Aims to Solve The present invention, which meets the above-mentioned requirements, eliminates all disadvantages and/or brings some additional advantages, will prevent heavy parts (<200 kg) that may fall from above during the work carried out under the converter in the steel mill facility, from harming the employees in the mandatory work to be done under the converter. It is also about a compact visor with a movement mechanism that will ensure continuity of production. The purpose of the invention is to charge the liquid steel from the converters to the steel casting crucible and the slag remaining at the bottom to the slag pot. It is to solve the problem of hot metal splashing out of the ladle during charging of liquid steel/slag from the converters to the steel ladle or slag pot. The gaps left in the side walls of the converter working area and the movement areas of the steel casting/slag ladle cars cannot be closed, and the scrap pieces falling from these gaps and charged to the converter, and the liquid steel/slag slag accumulated on the side walls, fall on the steel casting ladle transfer carriageway. Spilled and falling materials accumulate on the transfer cart rails. The falling of these mentioned parts during the cleaning of the rails poses a high risk in terms of OHS for the personnel working during the cleaning. In this invention, by installing a movable visor under the converter, OHS risks will be eliminated by providing protection to the working personnel during the cleaning process and other works to be carried out under the converter. Another purpose of the invention is to ensure the continuity of converter liquid steel production in the steel mill facility. Production is suspended during the work carried out under the converter. The movable visor, which is the subject of the invention, provides protection to employees by covering the path of the steel casting ladle transfer cart. After the work is completed, the transfer cart road is opened to production again in a short time by closing the movable visor. Explanation of Figures Figure 1: Perspective View of the Protective Visor Subject to the Invention Figure 2: Perspective View of the Protective Visor Subject to the Invention from Different Angles Figure 3: Detail View of the Open State of the Actuator and Lock Mechanism of the Protective Visor Subject to the Invention Figure 4: Closed View of the Actuator and Lock Mechanism of the Protective Visor Subject to the Invention Detail View from Different Angle Figure 5: Side Detail View of the Opened Actuator and Lock Mechanism of the Protective Visor Subject to the Invention Explanation of References in the Figures 1 - Left Head Visor 2 - Left Middle Visor 2.1 - Right Middle Visor 3 - Left Tail Visor 4 - Right Head Visor - Right Tail Visor 6 - Rotation Center 7 - Shock Absorber 8 - Right Linear Actuator 9 - Left Linear Actuator - Locking System .1 - Hook .2 - Seating Surface 11 - Support Chassis - Visor Structure 100 - Protective Visor Description of the Invention In this description, the subject of the invention The protective visor (100), which will prevent parts that may fall from above during the work carried out under the converter in the steel mill facility, from harming the personnel working under the converter, is explained only for a better understanding of the subject and in a way that does not create any limiting effect. The invention is related to a protective visor (100) that will prevent harm to employees during mandatory work under the converter and at the same time ensure the continuity of production, and its feature is; It contains a visor structure (20) that opens and closes with the drive it receives from actuators. Figure 1 shows the perspective view of the protective visor (100) that is the subject of the invention, and Figure 2 shows the perspective view of the protective visor (100) that is the subject of the invention from different angles. The protective visor (100) that is the subject of the invention has been introduced in order to prevent parts that may fall from above during the work carried out under the converter in the steel mill facility, from harming the personnel working under the converter. The protective visor (100) consists of a 6-piece visor structure (20) and is designed as a rotatable movable structure that protects the personnel working under the visor structure (20), left head visor (1), left middle visor (2), right middle visor (2.1), It consists of left tail guard (3), right head guard (4), and right tail guard (5). These parts are independent of each other and can work with only one of them or in different combinations when desired. At the back of the visor structure (20), the moment center of the visor structure (20) and the rotation center (6), which is the connection chassis, are located. At the bottom of the visor structure (20), the right linear actuator (8) and the left linear actuator (9), which are the drive parts that provide the rotational movement of the visor structure (20) with a pushing/pulling motion, are located. At the bottom of the right linear actuator (8) and left linear actuator (9), there is a shock absorber part that softens the impacts on the right linear actuator (8) and left linear actuator (9). There is a support frame (11) that supports the visor structure (20) at the back of the right linear actuator (8) and the left linear actuator (9). Figure 3 shows the detail view of the actuator and locking mechanism (10) of the protective visor (100) that is the subject of the invention, Figure 4 shows the detailed view of the actuator and locking mechanism (10) of the protective visor (100) that is the subject of the invention from different angles, and Figure 4 shows the detail view of the protector that is the subject of the invention. There is a side detail view of the actuator and locking mechanism (10) of the visor (100). The locking mechanism (10) is the shock absorbing part that absorbs and softens the impacts when the visor structure (20) is in the open position. The locking mechanism (10) consists of a hook (10.1) and a seating surface (10.2). When the protective visor (100) is in the open position, the hook (10.1) sits on the seating surface (10.2) and locks the visor structure (20). The visor structure (20) is positioned to rotate around the rotation center (6). On the support frame (11), the left head guard (1), the left middle guard (2), the right middle guard (2.1), the left tail guard (3), the right head guard (4) and the right tail guard (5) will be moved and locked. The linear actuator (8), the left linear actuator (9) and the locking systems (10) are connected. The visor structure (20) remains in the closed position, and when it is necessary to work under the converter, it is moved by the right linear actuator (8) and the left linear actuator (9), brought to the open position and secured with the lock system (10). The right linear actuator (8) and the left linear actuator (9) are supported with a shock absorber (7) to protect against impacts. After the work under the converter is completed, the protective guard (100) is brought back to the closed position by opening the locking system (10) and activating the right linear actuator (8) and the left linear actuator (9). When the system is activated, audible and visual warnings are activated and the protective visor (100) opens or closes. With the protective visor (100) opening command, the visor structure (20) stops at its right point by receiving a signal via the lever limit switch. When the visor structure (20) stops, the mechanical rotary locking mechanism (10) is activated and rotates until it receives a signal from the lever limit switch, thus ensuring mechanical locking of the visor structure (20). While the visor structure (20) is closing, the same process is performed in reverse order by restarting the system to ensure its closure. Industrial and Application Form of the Invention The invention is related to a protective visor (100) that will be used under the converter in the steel mill in the iron and steel industry and will prevent harm to the employees during the mandatory work to be done under the converter and at the same time ensure the continuity of production. TR TR TR TR

Claims (9)

STEMS 1. The invention is related to a protective visor (100) that will prevent harm to employees during mandatory work under the converter and at the same time ensure the continuity of production, and its feature is; - It contains a visor structure (20) that opens and closes with the drive it receives from actuators. 2. It is a protective visor (100) as in claim 1, and its feature is; The visor structure (20) has a 6-piece structure. 3. It is a protective visor (100) as in any of the claims in claim 1 or 2, and its feature is; The aforementioned 6-piece visor structure (20) can be opened and closed in different combinations. 4. It is a protective visor (100) as in any of the claims 1 - 3, and its feature is; It must have at least 2 actuators. 5. It is a protective visor (100) as in any of the claims 1 - 4, and its feature is; which is the moment center and connection chassis of the said visor structure (20) 6. It is a protective visor (100) as in any of the claims 1 - 5, and its feature is; The right linear actuator (8) and the left linear actuator (9) contain a shock absorber (7) to protect them against impacts. 7. It is a protective visor (100) as in any of the claims 1 - 6, and its feature is; It contains a lock structure (10) that locks the visor structure. 8. It is a protective visor (100) as in any of the claims 1 - 7, and its feature is; The said lock structure (10) includes a hook (10.1) and a seating surface (10.2). 9. It is a protective visor (100) as in any of the claims 1 - 8. feature; The said visor structure (20) contains audible and light signals that are activated when it is opened and closed.