Apparatus and method for transporting molten material

Abstract

A molten material transporting device and a molten material transporting method that allow easy opening and closing of a container. [Solution] The device is characterized by comprising a container having an internal space capable of accommodating a molten material and an opening through which the molten material can enter and exit, a cover part equipped with a cover member capable of closing the opening, positioned above the container and capable of moving back and forth relative to the opening, and a support part equipped with a rotating body located below the cover part and capable of moving back and forth relative to the cover part so as to come into contact with the cover part.

Description

[Technical field]

[0001] The present invention relates to an apparatus and method for transporting a molten material, and more particularly to an apparatus and method for transporting a molten material that can easily open and close a container that contains a molten material. [Background technology]

[0002] The molten iron tapped from the blast furnace is loaded into a torpedo car, which then travels to the steelmaking plant, where impurities are removed. At this time, a cover is used to close the opening of the torpedo car to prevent the temperature of the molten iron from dropping while the torpedo car is traveling to the steelmaking plant. Meanwhile, while the torpedo car is being transported to the steelmaking plant, auxiliary materials such as a heat enhancer and a desulfurization agent are added to the molten iron multiple times, which necessitates the operation of repeatedly opening and closing the opening of the torpedo car as it is being transported to the steelmaking plant multiple times. However, since the torpedo car is a non-powered transport vehicle and does not have the power to move the cover and open and close the opening, a device installed separately from the torpedo car is used to lift and lower the cover to open and close the opening.

[0003] However, numerous devices are installed along the path along which the torpedo car travels, and the surrounding space is insufficient. In particular, the space above the torpedo car is extremely narrow. This makes it difficult to install a device for moving the cover above the torpedo car, and therefore difficult to raise and lower the cover to open and close the opening. This also makes it very difficult to open and close the opening multiple times while the torpedo car is traveling to the steelmaking plant. 。 [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Korean Patent No. 10-0701394 Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide an apparatus for transporting a molten material and a method for transporting a molten material, the container of which can be easily opened and closed. Another object of the present invention is to provide an apparatus and method for transporting a molten material, the container of which can be easily opened and closed in a limited space. Specifically, the present invention provides a molten material transporting device and a molten material transporting method capable of preventing sagging of a cover portion for opening and closing a container. [Means for solving the problem]

[0006] The molten material transport device of the present invention is characterized in that it comprises a container having an internal space capable of accommodating a molten material and an opening through which the molten material can enter and exit, a cover part positioned above the container and movable back and forth relative to the opening, and a support part equipped with a rotating body on the underside of the cover part that can move back and forth relative to the cover part so as to come into contact with the cover part.

[0007] The transport device preferably includes a forward / reverse drive unit fastened to the lower part of the cover part on one side of the container so as to move the cover part forward and backward, and the support part is positioned between the forward / reverse drive unit and the container and is inclined upward so as to approach the opening as it proceeds toward the rotating body. The support portion may include a support rod having one end facing the cover portion connected to the rotating body and inclined upward so as to approach the opening as it progresses toward the one end, and a support drive source connected to the other end of the support rod and capable of moving the support rod back and forth relative to the cover portion. The transport device preferably comprises a support height adjustment unit coupled to the support for raising and lowering the support.

[0008] The transport device may include a lifting drive unit connected to the lower part of the forward / reverse drive unit to raise and lower the forward / reverse drive unit, and first and second housings connected to both longitudinal ends of the container, wherein the forward / reverse drive unit and the lifting drive unit are arranged on the upper part of the first housing, and the support unit and support height adjustment unit are arranged on the side of the first housing. The transportation device preferably includes a power supply unit disposed in the first housing and providing power to each of the forward / reverse drive unit, the lift drive unit, the support unit and the support height adjustment unit, the power supply unit preferably including a battery. The transportation device can receive command signals input wirelessly from an external source to control the operation of the forward / reverse drive unit, the lift drive unit, the support unit, and the support height adjustment unit, and preferably includes a control unit arranged in the first housing.

[0009] The transportation device may include a control unit arranged in the first housing and capable of controlling the operation of the forward / reverse drive unit, the lift drive unit, the support unit, and the support height adjustment unit, and an operation button arranged in the first housing and capable of passing a command signal to the control unit. The transportation device may include an operating handle disposed on the first housing, capable of controlling the operation of the forward / reverse drive unit, the lift drive unit, the support unit, and the support height adjustment unit.

[0010] The molten material transportation method of the present invention includes a process of transporting a molten material transportation device having a molten material contained inside a container, and an opening / closing process of opening and closing an opening of the container, and is characterized in that the opening / closing process includes a forward / backward movement process of moving a cover part forward or backward relative to the opening, and a first support process of supporting the cover part moving forward or backward from below.

[0011] The opening and closing process may include a lifting process of lifting or lowering the cover part before or after the forward / reverse process, and a second supporting process of supporting the lifting or lowering cover part from below. The first and second supporting processes preferably include a process of contacting a rotating body positioned below the cover part with the cover part, and the first supporting process preferably includes a process of rotating the rotating body with a force that causes the cover part to move forward or backward.

[0012] It is preferable that the process of contacting the rotating body with the cover portion includes a process of moving the rotating body back and forth relative to the cover portion, and that the process of moving the rotating body back and forth relative to the cover portion includes a process of tilting the rotating body and moving it back and forth such that the distance between the rotating body and the opening gradually becomes shorter as the height of the rotating body increases. It is preferable that the process of contacting the rotating body with the cover portion includes a process of contacting the rotating body with an area other than the area facing the opening when a portion of the cover portion is positioned facing the opening to close the opening. Each of the forward / reverse movement process, the first and second support processes, and the lifting process can be operated using its own electric power.

[0013] Each of the forward / backward movement process, the first and second support process, and the lifting and lowering process may preferably include a process of generating a command signal via a remote control provided separately from the molten material transport device and wirelessly connected to the cover portion and the rotating body. Effect of the Invention

[0014] According to the embodiment of the present invention, the opening of the container can be easily opened and closed in a limited space. In addition, when the cover part is moved to open or close the opening, the cover part is prevented from sagging or tilting. This allows the cover part to be easily moved and prevents at least a part of the opening from being exposed to the outside. This makes it possible to prevent or suppress a drop in the temperature of the molten material in the container. The opening can be opened and closed without being connected to an external power source, and can be freely opened and closed as required. [Brief description of the drawings]

[0015] [Figure 1] 1 is a front view of a melt transport device according to an embodiment of the present invention; [Diagram 2] FIG. 2 is an enlarged three-dimensional view of part “A” in FIG. [Diagram 3] 1 is a cross-sectional view of a portion of a melt transport device according to an embodiment of the present invention. [Figure 4] 1A and 1B are diagrams for explaining the operation of a cover portion and a support portion of a melt transport device according to an embodiment of the present invention, and show a portion of the melt transport device. [Diagram 5] 1A and 1B are diagrams for explaining the operation of a cover portion and a support portion of a melt transport device according to an embodiment of the present invention, and show a portion of the melt transport device. [Figure 6] 1A and 1B are diagrams for explaining the operation of a cover portion and a support portion of a melt transport device according to an embodiment of the present invention, and show a portion of the melt transport device. [Figure 7] 1 is a graph showing the change in temperature of molten iron over time when the molten iron is transported by the molten iron transport device according to the embodiment and the comparative example of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, the embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and may be embodied in various different forms. These embodiments are provided merely to complete the disclosure of the present invention and to fully inform those skilled in the art of the scope of the invention. In order to explain the embodiments of the present invention, the drawings may be exaggerated, and the same reference numerals in the drawings indicate the same components.

[0017] The present invention relates to a molten material transport device that can easily open and close an opening provided in a container that contains a molten material. More specifically, the present invention relates to a molten material transport device that can easily open and close the container in a limited space and can prevent sagging of a cover part that opens and closes the container. Here, the molten material is molten pig iron. The molten material transport device is a facility for producing molten pig iron, for example, a device for transporting molten pig iron tapped from a blast furnace. More specifically, the molten material transport device may be a device called a torpedo car in the technical field of steelmaking.

[0018] Fig. 1 is a front view showing a melt transport device according to an embodiment of the present invention. Fig. 2 is a three-dimensional view showing an enlarged view of part "A" in Fig. 1. Fig. 3 is a cross-sectional view showing a part of a melt transport device according to an embodiment of the present invention. As shown in Figures 1 to 3, a molten material transportation device according to an embodiment of the present invention comprises a container 1000 having an internal space for accommodating molten material M and an opening 1100 through which the molten material M can enter and exit, a cover member 2100 for opening and closing the opening 1100, a cover part 2000 on the upper side of the container 1000 that can move forward and backward relative to the opening 1100, and a support part 3000 that can be raised and lowered on the lower side of the cover part 2000 to support the cover part 2000 or release the supporting force. The molten material transport device includes a forward / backward drive unit 4000 for moving the cover unit 2000 forward and backward, a lift drive unit 5000 for lifting the forward / backward drive unit 4000, and a support height adjustment unit 6000 for lifting the support unit 3000.

[0019] The molten material transport device also includes first and second housings 8100a, 8100b arranged on both sides of the container 1000 in the longitudinal direction (X-axis direction), first and second rotational drive units 8200a, 8200b positioned inside the first and second housings 8100a, 8100b, respectively, and connected to both longitudinal ends of the container 1000 to provide rotational driving force, first and second running units 8300a, 8300b connected to the lower parts of the first and second housings 8100a, 8100b, respectively, and a receiving base 8400 arranged on the upper part of the first housing 8100a to support the forward / reverse drive unit 4000 and the lifting drive unit 5000. 3, the molten material transport device includes a control unit 7100 disposed in a first housing 8100a and controlling the operations of the forward / reverse drive unit 4000, the lift drive unit 5000, the support unit 3000, and the support height adjustment unit 6000, and a power supply unit 7200 of a rechargeable battery type disposed in the first housing 8100a. Here, the power supply unit 7200 may be a means for supplying power for driving the forward / reverse drive unit 4000, the lift drive unit 5000, the support unit 3000, and the support height adjustment unit 6000.

[0020] Such a molten material transport device moves with the molten material M contained inside the container 1000. At this time, the container 1000 is moved with the opening 1100 closed via the cover member 2100. Closing the opening 1100 when the molten material transport device is moved is to prevent or suppress a decrease (drop) in the temperature of the molten material M. The container 1000 is a means for containing the molten material M. The container 1000 may be made of a material containing a refractory material so as to prevent or suppress a drop in the temperature of the molten material M. The container 1000 may have a shape extending in one direction, and as shown in FIG. 1, both ends in the longitudinal direction may be fitted between the first and second housings 8100a and 8100b and connected to the first and second rotary drive units 8200a and 8200b. The container 1000 is provided with an opening 1100 through which the molten material M can be charged or discharged, and the opening 1100 is preferably located at the center of the longitudinal direction of the container 1000.

[0021] Each of the first and second housings 8100a and 8100b may be in the shape of a box having an internal space. A first rotation drive unit 8200a connected to one end of the container 1000 is disposed inside the first housing 8100a, and a second rotation drive unit 8200b connected to the other end of the container 1000 is disposed inside the second housing 8100b. In addition, a base 4300, a lift drive unit 5000, and a forward / reverse drive unit 4000 are disposed on one of the first and second housings 8100a and 8100b, for example, on the upper portion of the first housing 8100a, as shown in FIG. 1. The first and second rotation driving units 8200a, 8200b are means for providing a rotation driving force so that the container 1000 can rotate. The first and second rotation driving units 8200a, 8200b may be means operated by electric power. More specifically, each of the first and second rotation driving units 8200a, 8200b may be means including a motor operated by supplied electric power.

[0022] The rotation of the container 1000 using the first and second rotation drive units 8200a, 8200b is performed when discharging the molten material M inside the container 1000 to the outside. That is, when the first and second rotation drive units 8200a, 8200b are operated to rotate the container 1000 so that the height of the opening 1100 becomes lower, the molten material M is discharged to the outside through the opening 1100. The first and second running units 8300a, 8300b are means for moving the molten material transport device. The first and second running units 8300a, 8300b are means capable of sliding along a rail. That is, each of the first and second running units 8300a, 8300b may include a frame 8310 disposed under the housings 8100a, 8100b and a wheel 8320 disposed under the frame 8310 so as to be freely rotatable.

[0023] A space in which the operator H can get on may be provided in an upper portion of at least one of the first and second traveling portions 8300a, 8300b, as shown in Fig. 1. For example, as shown in Fig. 1, a space in which the operator H can get on is provided in an upper portion of the second traveling portion 8300b. Therefore, the molten material transport device can move with the operator H getting on. The operator H may enter the molten material transport device while being equipped with a remote control R capable of wirelessly controlling the operation of at least one of the forward / reverse drive unit 4000, the lift drive unit 5000, the support unit 3000, and the support height adjustment unit 6000, which will be described later. Thus, the operator H can use the remote control R to control the forward / reverse drive unit 4000, the lift drive unit 5000, the support unit 3000, and the support height adjustment unit 6000. In other words, the operator can control the operations of the forward / reverse drive unit 4000, the lift drive unit 5000, the support unit 3000, and the support height adjustment unit 6000 without getting off the molten material transport device. Therefore, while the molten material transport device is moving to the final destination, the operator can operate the remote control R as necessary to move the cover part 2000, thereby opening and closing the opening 1100. That is, the operator H can use the remote control R to control the operation of at least one of the forward / reverse drive part 4000, the lift drive part 5000, the support part 3000, and the support height adjustment part 6000 to move the cover part 2000, thereby opening and closing the opening 1100.

[0024] Here, the situation in which it is necessary to open the opening 1100 while the molten material transport device is moving toward the final destination may be a situation in which the molten material transport device reaches a position for feeding auxiliary materials. For example, it may be necessary to feed auxiliary materials such as a heat raising agent and a desulfurizing agent while the molten material transport device is moving to the final destination. For this reason, when the molten material transport device reaches a position for feeding a heat raising agent (hereinafter, heat raising agent feeding position) and a position for feeding a desulfurizing agent (hereinafter, desulfurizing agent feeding position) while moving, it is necessary to open the opening 1100 to feed the auxiliary materials. Therefore, when the molten material transport device is moving with the operator H on board and reaches, for example, the position for adding a heat enhancer, the operator H uses the remote control R to control the operation of the cover part 2000 and open the opening 1100 closed by the cover member 2100. After this, when the addition of the auxiliary raw material is completed, the operator H again uses the remote control R to move the cover member 2100 to close the opening 1100. 4 to 6 are diagrams for explaining the operation of a cover portion and a support portion of a melt transporting device according to an embodiment of the present invention, and are diagrams showing a part of the melt transporting device.

[0025] 1 to 6, the cover part 2000 is a means for opening and closing (covering) the opening 1100 provided in the container 1000. The cover part 2000 opens and closes the opening 1100 by moving forward and backward and raising and lowering the opening 1100. The cover part 2000 includes an arm 2200 connected to a forward and backward driving part 4000 and a cover member 2100 connected to an end of the arm 2200. The arm 2200 may have a shape extending in one direction. More specifically, the arm 2200 may have a shape extending in the direction in which the first housing 8100a and the container 1000 are arranged. In other words, the arm 2200 may have a shape extending in the direction in which the forward / reverse drive unit 4000 and the opening 1100 are arranged. In other words, the arm 2200 may have a shape extending in the longitudinal direction (X-axis direction) of the container 1000. The arm 2200 may have a plate shape having a predetermined area and thickness, as shown in FIG. 2.

[0026] The arm 2200 is connected to the forward / reverse drive unit 4000, and can move forward toward the opening 1100 side or backward toward the opposite side of the opening 1100 by the operation of the forward / reverse drive unit 4000. In this case, the arm 2200 may be connected to an upper part of the forward / reverse drive unit 4000. The arm 2200 may be connected to the forward / reverse drive unit 4000 in various ways. For example, when the forward / reverse drive unit 4000 described later is provided with a belt having a plurality of protrusions arranged in one direction and grooves between the protrusions, the arm 2200 is provided so as to be connected to such a belt 4220. That is, a protrusion that can be inserted or meshed with the groove of the belt 4220 for fastening is provided on the lower surface of the arm 2200. Needless to say, the arm 2200 is not limited to the above-mentioned example, and any shape or means may be used as long as it can be fastened to the forward / reverse drive unit 4000.

[0027] The cover member 2100 is a means for closing the opening 1100, and is connected to the arm 2200. More specifically, the cover member 2100 is connected to the end (one end) of the arm 2200 in the extending direction, which is the end facing the opening 1100. Such a cover member 2100 is provided to have a size capable of covering and closing the entire opening 1100. For this purpose, it is preferable that the uppermost surface of the cover member 2100 is provided to be the same as or larger than the opening in the vertical direction. In addition, the cover member 2100 may be provided so that its lower portion can penetrate the opening and fit inside the container 1000. For this purpose, the cover member 2100 is provided in a shape whose width gradually narrows as it proceeds downward. In other words, the cover member 2100 may be provided in a convex shape on the lower side.

[0028] In the above, it has been described that the top surface of the cover member 2100 is set to be the same as or larger than the opening 1100. However, the present invention is not limited to this, and any portion between the top surface and the bottom surface may be set to be the same as or larger than the opening. The cover member 2100 is preferably made of a material containing a refractory material in order to prevent or inhibit a decrease in the temperature of the molten material M in the container 1000 when the opening 1100 is closed by the cover member 2100. The forward / reverse drive unit 4000 is a means for moving the cover unit 2000 forward and backward relative to the opening 1100, and may be installed on the upper side of the first housing 8100a so as to be located on one side of the longitudinal direction (X-axis direction) of the container 1000, as shown in Figures 2 and 3.

[0029] 2 and 3, the forward / reverse drive unit 4000 includes a base 4300 disposed on the upper part of the lifting / lowering drive unit 5000, a forward / reverse drive body 4200 fastened to the arm 2200 on the upper side of the base 4300 and movable toward the opening 1100 side or the side opposite to the opening 1100, and a forward / reverse drive source 4100 disposed on the base 4300 to be connected to the forward / reverse drive body 4200 and to operate the forward / reverse drive body 4200. In addition, a connecting member 4400 connecting the forward / reverse drive source 4100 and the forward / reverse drive body 4200 may be provided. The base 4300 may have a plate shape extending in the extension direction of the cover part 2000. In other words, the base 4300 may have a plate shape extending in the direction in which the first housing 8100a and the container 1000 are arranged.

[0030] The forward / reverse drive body 4200 is disposed on the upper part of the base 4300 and is fastened to the arm 2200 of the cover part 2000. As shown in Fig. 2 and Fig. 3, the forward / reverse drive body 4200 is preferably provided with a pair of pulleys 4210 rotatable by the operation of the forward / reverse drive source 4100, which are arranged in parallel to each other so as to be spaced apart from each other in the extending direction of the base 4300, and a belt 4220 fastened to wrap around the outer circumferential surfaces of the pair of pulleys 4210. Each of the pair of pulleys 4210 may be a means having a plurality of projections or sawtooths arranged in parallel in the circumferential direction on its outer circumferential surface. The belt 4220 is provided in a loop or annular shape and is arranged so as to wrap around the outer circumferential surfaces of the pair of pulleys 4210. Such a belt 4220 may be provided with a plurality of projections and grooves between the projections on its inner surface that contacts the outer circumferential surface of the pulley 4210 and on its outer surface that is the opposite surface of the inner surface. Here, the projections provided on the inner surface of the belt 4220 may be a means for fastening by fitting or meshing with the grooves between the projections provided on the outer circumferential surface of the pulley 4210. Also, the projections provided on the outer surface of the belt 4220 are a means for fastening by fitting or meshing with the grooves provided on the lower surface of the arm 2200.

[0031] The forward / reverse drive source 4100 is a means for rotating the pulley 4210, and is disposed so as to be connected to one of the pair of pulleys 4210. The forward / reverse drive source 4100 may be a means that operates by electricity. For example, the forward / reverse drive unit 4000 may be a means that includes a motor that is driven by supplied electricity. To give a more specific example, the forward / reverse drive source 4100 may be a means that includes a direct current motor (DC motor).

[0032] When the forward / reverse driving source 4100 includes a DC motor, the operation of the forward / reverse driving body 4200 and the cover part 2000 according to the operation of the forward / reverse driving source 4100 will be briefly described as follows. The DC motor can adjust the rotation direction of the pulley 4210 according to the polarity of the power or current supplied. That is, when the first terminal of the DC motor is connected to the positive pole (+) and the second terminal is connected to the negative pole (-) to supply power, the pulley 4210 rotates, for example, in a clockwise direction. Conversely, when the first terminal of the DC motor is connected to the negative pole (-) and the second terminal is connected to the positive pole (+) to supply power, the pulley 4210 rotates in a counterclockwise direction. In addition, the belt 4220 rotates due to the rotation of the pulley 4210. For example, if the pulley 4210 rotates in a clockwise direction, the belt 4220 rotates in a clockwise direction, and conversely, if the pulley rotates in a counterclockwise direction, the belt 4220 rotates in a counterclockwise direction. Then, the cover part 2000 fastened to the belt 4220 moves due to the rotation of the belt 4220. For example, if the belt 4220 rotates in a clockwise direction, the cover part 2000 moves forward toward the opening 1100 of the container, and if the belt 4220 rotates in a counterclockwise direction, the cover part 2000 moves backward toward the opposite side of the opening 1100.

[0033] A plurality of, for example, a pair of, forward and backward drive units 4000 may be provided as described above. The pair of forward and backward drive units 4000 may be arranged side by side in a direction intersecting or perpendicular to the direction in which the cover unit 2000 moves forward and backward as shown in FIG. 2 to allow the cover unit 2000 to move forward and backward more stably. That is, the forward and backward driving unit 4000 may include a guide member 4600 extending in the extending direction of the cover unit 2000 and disposed on the upper part of the base 4300. The guide member 4600 may be a kind of rail. In addition, a movable body (not shown) may be further provided on the lower surface of the arm 2200 to be fastened to the guide member 4600 and capable of sliding along the guide member 4600. The lifting / lowering driver 5000 is a means for lifting / lowering the cover unit 2000, and may be disposed below the forward / reverse driving unit 4000. That is, the lifting / lowering driver 5000 may be disposed between the forward / reverse driving unit 4000 and the receiving stand 8400. The lifting / lowering driver 5000 may include a lifting / lowering driver source 5100 disposed above the receiving stand 8400 and providing a lifting / lowering driving force, and a lifting / lowering driver 5200 that operates on the upper side where the forward / reverse driving unit 4000 is positioned or on the lower side opposite the forward / reverse driving unit 4000 according to the operation of the lifting / lowering driver source 5100.

[0034] The lifting drive source 5100 is a means for lifting and lowering the lifting drive body 5200, and may be a means operated by electricity. The lifting drive source 5100 may be any means as long as it is possible to lift and lower the lifting drive body 5200 using electricity, and may be, for example, a motor operated by electricity. The support part 3000 is a means for preventing the cover part 2000 from sagging under its own weight. In other words, the support part 3000 is a means for preventing the cover part 2000, which moves forward so as to move away from the forward / reverse drive part 4000, from tilting to one side and sagging. More specifically, the support part 3000 is provided to prevent the cover part 2000 from sagging when the cover part 2000 is moved forward as shown in Figs. 3 and 4, moved backward as shown in Figs. 5 and 6, or when the cover part 2000 is lowered as shown in Fig. 5 in a state in which the cover member 2100 faces the opening 1100 as shown in Fig. 4.

[0035] Such a support part 3000 may be disposed on a side of the first housing 8100a as shown in Figures 2 and 3. That is, the support part 3000 may be disposed so as to be positioned in the space between the side of the first housing 8100a and the container 1000. Also, the support part 3000 may be disposed obliquely upward from the first housing 8100a toward the cover part 2000 or the opening 1100. This makes it possible to prevent interference between the forward / reverse drive part 4000, the lifting / lowering drive part 5000, and the container 1000 during the lifting / lowering operation of the support part 3000. 2 and 3, the support part 3000 includes a support rod 3200 extending from the underside of the cover part 2000 toward the cover part 2000, a rotating body 3300 disposed at one end of the support rod 3200 facing the cover part 2000 and capable of rotating as the cover part 2000 moves forward and backward, and a support drive source 3100 for raising and lowering the support rod 3200.

[0036] The support rod 3200 may have a bar shape extending in one direction. The support rod 3200 is connected to the rotor 3300, and one end of the support rod 3200 that faces the opening may be connected to the rotor 3300, and the other end of the support rod 3200 that is the opposite end may be connected to the first housing 8100a. In this case, the base 4300, the lifting drive unit 5000, and the forward / reverse drive unit 4000 are disposed on the upper portion of the first housing 8100a, so that the other end of the support rod 3200 is disposed to be connected to the side of the first housing 8100a. Furthermore, the support rod 3200 may be obliquely provided upward from the side of the first housing 8100a toward the opening or the cover part 2000. Therefore, the support rod 3200 may be in a state where the height of one end to which the rotating body 3300 is connected is higher than the height of the other end to which the first housing 8100a is connected. The rotating body 3300 is disposed at one end of the support rod 3200 so as to be rotatable by the force of the cover part 2000 moving forward and backward when the rotating body 3300 comes into contact with the cover part 2000. Such a rotating body 3300 may be a wheel or a roll.

[0037] The reason why the rotating body 3300 is disposed at one end of the support rod 3200 is so that the support part 3000 does not hinder the movement of the cover part 2000. More specifically, in order to prevent the cover part 2000 from sagging due to its own weight when it moves forward and backward, the support part 3000 is brought into contact with the lower part of the cover part 2000, or more precisely, the rotating body 3300 is brought into contact with the lower part of the cover part 2000 to support the cover part 2000, as shown in Figures 4 and 5. That is, when the cover part 2000 moves forward and backward, the rotating body 3300 rotates due to the force of the cover part 2000 moving forward and backward, so that even if the rotating body 3300 is supported in contact with the cover part 2000, the rotating body 3300 does not hinder the forward and backward movement of the cover part 2000. However, if the rotating body 3300 is not provided at one end of the support rod 3200 and the support rod 3200 is directly in contact with the lower part of the cover part 2000, the movement of the cover part 2000 may not be smooth due to the support rod 3200. In other words, the support rod 3200 may hinder the movement of the cover part 2000. Therefore, by providing the rotating body 3300 at one end of the support rod 3200, the cover part 2000 can be supported so as not to droop, without hindering the forward and backward movement of the support part 3000.

[0038] The support drive source 3100 is a means for raising and lowering the support rod 3200. Raising and lowering the inclined support rod 3200 means an operation of raising or lowering the height of one end to which the rotating body 3300 is connected. Since the support rod 3200 is obliquely installed upward toward the opening side, when the support rod 3200 rises, the one end approaches the opening side, and when the support rod 3200 descends, the one end moves away from the opening. For this reason, the raising and lowering operation of the support rod 3200 can be explained as a forward movement toward the opening side, or a backward movement to the side opposite the opening. In other words, it can be explained as the support rod 3200 moving forward and backward in the inclined direction.

[0039] The support height adjustment unit 6000 is a means for raising and lowering the entire support unit 3000. That is, as shown in Fig. 4 and Fig. 6, the support height adjustment unit 6000 raises and lowers the entire support unit 3000. Such a support height adjustment unit 6000 is disposed on the side of the first housing 8100a, for example, as shown in Fig. 3, and the other end of the support unit 3000 is connected to the support height adjustment unit 6000. The support height adjustment unit 6000 may include a guide member 6100 extending in the vertical direction and disposed on a side of the first housing 8100a, a movable block 6200 attached to the other end of the support unit 3000 and fastened to the guide member 6100, and capable of sliding along the guide member 6100, and a height adjustment drive source 6300 for operating the movable block 6200. According to the support height adjustment unit 6000, the movable block 6200 rises or falls along the guide member 6100 by the operation of the height adjustment drive source 6300. At this time, the support unit 3000 connected to the movable block 6200 rises or falls together with the movable block 6200.

[0040] Each of the support drive source 3100 and the height adjustment drive source 6300 described above may be a means that operates by electricity. For example, each of the support drive source 3100 and the height adjustment drive source 6300 may be a means that includes a motor that rotates by electricity and a movable member that moves linearly with the rotation of the motor and moves forward or backward along the rotation direction of the motor. To give a more specific example, the support drive source 3100 and the height adjustment drive source 6300 may include an LM guide (linear motion guide). The support drive source 3100 and the height adjustment drive source 6300 are not limited to the above-mentioned examples, and any means may be used as long as they are capable of operating using electricity to raise and lower the support rod 3200 and the movable block 6200, respectively.

[0041] The reason why the entire support part 3000 is raised and lowered using the support height adjustment part 6000 is to support the cover part 2000 even when it is raised and lowered without interfering with the raising and lowering of the cover part 2000. To explain by way of example, in order to close the opening with the cover member 2100, as shown in FIG. 5, when the cover part 2000 is lowered, the support part 3000 is lowered together. For this reason, it is preferable that the support part 3000 does not interfere with the downward movement of the cover part 2000. In addition, at this time, the support part 3000 is lowered while maintaining a state in which the support part 3000 is in contact with or supporting the arm of the cover part 2000 without being separated from it. This can be achieved by raising or lowering the support rod 3200 using the support drive source 3100 when the entire support part 3000 is lowered. In other words, it can be achieved by moving the support rod 3200 forward or backward toward the cover part 2000 or the opening 1100. Therefore, it is preferable that the support portion 3000 supports the cover portion 2000 to prevent it from sagging, but does not hinder the downward movement of the cover portion 2000. The power supply unit 7200 is a means for providing power to each of the forward / reverse drive source 4100, the lifting drive source 5100, the support drive source 3100, and the height adjustment drive source 6300. Such a power supply unit 7200 is preferably a rechargeable battery capable of charging power. The power supply unit 7200 is mounted on the molten material transport device, and may be disposed, for example, inside the first housing 8100a. The power supply unit 7200 may be connected to the control unit 7100 described later.

[0042] In the above, the power supply unit 7200 has been described as having a rechargeable battery, but the present invention is not limited to this, and the power supply unit 7200 may have a disposable battery. When the power supply unit 7200 has a disposable battery, the battery can be replaced periodically. In this way, the power supply unit 7200 is disposed inside the first housing 8100a and mounted on the molten material transport device, so that the cover unit 2000 can be moved forward and backward and raised and lowered as needed using its own power without connecting an external power source. In other words, when it is necessary to open or close the opening 1100, the opening can be opened or closed by the cover member 2100 using the power from the mounted power supply unit 7200, without having to move the molten material transport device to a position where an external power source is supplied.

[0043] The control unit 7100 may be disposed in the first housing 8100a, more specifically, inside the first housing 8100a. The control unit 7100 may be provided so as to be operable by a command signal input from the outside to control each of the forward / reverse drive unit 4000, the lift drive unit 5000, the support unit 3000, and the support height adjustment unit 6000. Such a control unit 7100 may include a forward / reverse control unit 7110 that controls the operation of the forward / reverse drive unit 4000, a lift control unit 7120 that controls the operation of the lift drive unit 5000, and a support control unit 7130 that controls the operation of the support unit 3000 and the support height adjustment unit 6000.

[0044] The forward / reverse control unit 7110 controls the operation of the forward / reverse drive source 4100. That is, the forward / reverse control unit 7110 controls the forward / reverse drive source 4100 so that the presence or absence of the rotational operation of the pulley 4210 constituting the forward / reverse drive body 4200 and the rotation direction of the pulley 4210 are adjusted. At this time, the forward / reverse control unit 7110 may operate based on a command signal input from the outside to control the forward / reverse drive source 4100. That is, if any one of a forward movement command signal, a forward movement stop command signal, a backward movement command signal, and a backward movement stop command signal input from a remote control R operated by an operator H is input to the forward / reverse control unit 7110, the forward / reverse control unit 7110 controls the operation of the forward / reverse drive source 4100 based on the input signal. Therefore, the forward / reverse drive body connected to the forward / reverse drive source 4100, i.e., the pulley 4210, is adjusted to rotate or not rotate, and the rotation direction is adjusted.

[0045] The lift control unit 7120 controls the operation of the lift driving source 5100. That is, the lift control unit 7120 controls the lift driving source 5100 so as to adjust whether or not the lift driving body 5200 operates and the direction of movement (i.e., upward or downward movement). The lift control unit 7120 may also operate based on a command signal input from the outside. That is, if any one of an upward command signal, an upward stop command signal, a downward command signal, and a downward stop command signal is input from the remote control R to the lift control unit 7120, the lift control unit 7120 controls the operation of the lift driving source 5100 based on the input signal. As a result, the lift driving body 5200 connected to the lift driving source 5100 can be raised or lowered, or the lift operation can be stopped. The support control unit 7130 controls the operation of the support drive source 3100 and the height adjustment drive source 6300 of the support unit 3000. The support control unit 7130 controls the support drive source 3100 and the height adjustment drive source 6300 based on a command signal input from the outside.

[0046] First, the support driving source 3100 will be described. When any one of an ascending command signal, an ascending stop command signal, a descending command signal, and a descending stop command signal for the support rod 3200 is input from the remote control R to the support control unit 7130, the support control unit 7130 controls the operation of the support driving source 3100 based on the input signal. That is, the support control unit 7130 controls the operation of the support driving source 3100 based on the input signal to adjust the support rod 3200 so that it ascends or descends or the ascending or descending operation is stopped. In addition, when any one of a rise command signal, a rise stop command signal, a fall command signal, and a fall stop command signal for the entire support unit 3000 is input from the remote control R to the support control unit 7130, the support control unit 7130 controls the operation of the height adjustment driving source 6300 based on the input signal. Therefore, the support unit 3000 connected to the support height adjustment unit 6000 can rise or fall or stop the rise and fall operation. Each of the forward / reverse control unit 7110, the lift control unit 7120, and the support control unit 7130 as described above controls whether or not the power input from the power supply unit 7200 is output to a driving source connected to each component.

[0047] That is, forward / reverse control unit 7110 controls whether or not the power input from power supply unit 7200 is output (on) to forward / reverse drive source 4100 (off), and lift / lower control unit 7120 controls whether or not the power input from power supply unit 7200 is output (on) to lift / lower drive source 5100 (off). At this time, forward / reverse control unit 7110 and lift / lower control unit 7120 each output or do not output power based on the input command signal. Furthermore, the support control unit 7130 controls whether or not the power input from the power supply unit 7200 is output (on) to each of the support drive source and the height adjustment drive source 6300. At this time, the support control unit 7130 outputs or does not output power based on a command signal for the support rod 3200 or the support unit 3000.

[0048] In the above, it has been described that the operator uses the remote control R to wirelessly transmit command signals to each of the forward / reverse control unit 7110, the lift control unit 7120, and the support control unit 7130 to control the operations of the forward / reverse drive unit 4000, the lift drive unit 5000, the support unit 3000, and the support height adjustment unit 6000. However, the method of controlling the operations of each of the forward / reverse control unit 7110, the lift control unit 7120, and the support control unit 7130, or the method of inputting command signals, is not limited to the above-mentioned methods.

[0049] For example, operation buttons (not shown) connected to the forward / reverse control unit 7110, the lift control unit 7120, and the support control unit 7130 may be provided outside the first housing 8100a. Then, an operator may operate the operation buttons to control the forward / reverse control unit 7110, the lift control unit 7120, and the support control unit 7130. That is, a command signal may be input to the forward / reverse control unit 7110, the lift control unit 7120, and the support control unit 7130 using the operation buttons. Therefore, the forward / reverse control unit 7110, the lift control unit 7120, and the support control unit 7130 each operate based on the input command signal, and the operations of the forward / reverse drive source 4100, the lift drive source 5100, the support drive source 3100, and the height adjustment drive source 6300 can be controlled. As another example, an operation handle (not shown) may be provided to apply a physical force to each of the forward / reverse drive source 4100, the lifting / lowering drive source 5100, the support drive source 3100, and the height adjustment drive source 6300. That is, an operation handle connected to each of the forward / reverse drive source 4100, the lifting / lowering drive source 5100, the support drive source 3100, and the height adjustment drive source 6300 may be disposed outside the first housing 8100a. The operation handle is provided so that an operator can apply a force by himself / herself, and may be provided so that the operator H can get off the molten material transport device and operate it by himself / herself in a situation such as when at least one of the forward / reverse control unit 7110, the lifting / lowering control unit 7120, and the support control unit 7130 malfunctions.

[0050] The operation of the molten material transport device according to the embodiment of the present invention will be described below with reference to Figures 1 to 6. At this time, the description will be given taking molten iron tapped from a blast furnace as an example of the molten material M. Also, the description will be given taking as an example a state in which the molten metal tapped from the blast furnace is charged into the vessel 1000, the opening 1100 is closed by the cover member 2100, and the molten material transport device starts to move. When the molten material transport device reaches a position where it is necessary to open the opening 1100 during its movement, the movement of the molten material transport device is stopped. Here, the position where it is necessary to open the opening 1100 may be, for example, a position where a heat enhancer is injected into the molten iron in the vessel 1000.

[0051] When the molten material transport device reaches the position where the heat enhancer is introduced and the movement is stopped, the cover part 2000 is moved to open the opening 1100. The method of opening the opening 1100 will be described later. When the opening 1100 is opened, the heat enhancer is introduced into the container 1000. When the introduction of the heat raising agent is completed, the opening 1100 is closed again. To this end, the power input from the power supply unit 7200 is output to the forward / reverse drive source 4100 via the forward / reverse control unit 7110 to operate the forward / reverse drive source 4100. At this time, the forward / reverse control unit 7110 adjusts the operation of the forward / reverse drive source 4100 so that the pulley 4210 rotates in a clockwise direction. As a result, the pulley 4210 and the belt 4220 rotate in a clockwise direction, and therefore the cover unit 2000 advances toward the opening 1100 side as shown in FIGS. 3 and 4.

[0052] In this way, when the cover part 2000 moves forward, the support part 3000 is used to support the cover part 2000 so that it does not sag. To this end, first, the entire support part 3000 is raised using the support height adjustment part 6000. Then, the support driving source 3100 is operated to raise the support rod 3200 so that the rotating body 3300 of the support part 3000 can contact the lower surface of the arm 2200 of the cover part 2000 as shown in Fig. 4. When the rotating body 3300 contacts the lower surface of the arm 2200 in this way, the support part 3000 supports the cover part 2000 (first supporting process). In the above, it has been described that the entire support unit 3000 is raised using the support height adjustment unit 6000, and then the support rod 3200 is raised. However, the present invention is not limited to this, and as long as the rotating body 3300 can support the lower surface of the arm 2200, the rotating body 3300 may be advanced in any order, or may be advanced simultaneously.

[0053] When the rotating body 3300 of the support part 3000 is brought into contact with the cover part 2000 to support the cover part 2000, it is preferable to support an area other than the cover member 2100, that is, the arm 2200, as shown in FIG. 4. This is because the cover member 2100 is made of a refractory material that is excellent in heat resistance but relatively weak against impact. Therefore, at the beginning of the forward movement of the cover part 2000, the cover part 2000 can be in a state where it is not supported by using the support part 3000. That is, at the beginning of the forward movement, the rotating body 3300 of the support rod 3200 and the arm 2200 are kept apart. Then, after the cover part 2000 starts to advance and the cover member 2100 passes the rotating body 3300, the rotating body 3300 of the support part 3000 is brought into contact with the arm 2200 to support the cover part 2000. After that, when the forward / reverse drive source 4100 continues to operate, the forward / reverse drive body 4200 continues to move the cover part 2000 forward. That is, as shown in Figs. 3 and 4, the cover member 2100 moves forward so as to gradually approach the opening 1100. At this time, since the support part 3000 supports the arm 2200 from below, it is possible to prevent the cover part 2000 from sagging due to its own weight. In addition, since the rotating body 3300 rotates due to the force of the cover part 2000 moving forward, it is possible to maintain a state in which the support part 3000 supports the cover part 2000 while not interfering with the movement of the cover part 2000.

[0054] 4, during forward movement, if the cover member 2100 is positioned to face the opening, the forward / reverse control unit 7110 stops the operation of the forward / reverse drive source 4100. As a result, the operation of the forward / reverse drive body 4200 is stopped, and the forward movement of the cover part 2000 is stopped. Thereafter, the lift control unit 7120 is used to operate the lift drive source 5100 to lower the cover unit 2000 as shown in Fig. 5. At this time, the cover member 2100 is lowered so that it can be placed on the upper wall of the container 1000 corresponding to the periphery of the opening 1100. Also, the cover unit 2000 is lowered so that at least the bottommost surface of the cover member 2100 can penetrate the opening and fit inside the container 1000. Therefore, the opening 1100 of the container 1000 is closed by the cover member 2100 as shown in Fig. 5.

[0055] In this manner, when the cover part 2000 is lowered, the support part 3000 is also lowered accordingly, as shown in Fig. 5. This is to prevent the support part 3000 from interfering with the descent of the cover part 2000. In other words, when the cover part 2000 is lowered, if the height of the support part 3000 is fixed while it is supporting the cover part 2000, the cover part 2000 may not be lowered. For this reason, when the cover part 2000 is lowered, the support part 3000 is lowered together with it. Also, when the cover part 2000 and the support part 3000 are lowered to close the opening 1100, the support part 3000 maintains a state in which it supports the cover part 2000 (second supporting process). That is, the rotating body 3300 maintains a state in which it is in contact with the arm 2200 of the cover part 2000. This can be adjusted by operating the support driving source 3100 to raise the support rod 3200 to the side of the cover part 2000 or lower it to the opposite side when the support part 3000 is lowered.

[0056] On the other hand, the arm 2200 of the cover part 2000 extends in one direction in an elongated manner, and when the cover member 2100 is positioned to face the opening 1100, most of the arm 2200 is positioned outside the forward / reverse drive part 4000. In this state, if the cover part 2000 is not supported, there is a risk that the cover part 2000 will sag and droop. That is, the cover part 2000 may sag in a tilted manner so that its height gradually decreases as it advances toward the cover member 2100 side. This may also cause the cover member 2100 to tilt. In such a case, when the cover member 2100 is lowered and placed on the top of the opening 1100, there is a risk that a gap will be generated between the upper wall of the container 1000 corresponding to the periphery of the opening 1100 and the opening 1100. Therefore, there is a risk that a part of the opening 1100 will be exposed, which will cause a problem that it will not be possible to completely close. However, if the cover portion 2000 is continuously supported by the support portion 3000 when the cover portion 2000 is lowered, the cover portion 2000 can be prevented from sagging. That is, the cover portion 2000 can be prevented from tilting to one side. Therefore, the cover member 2100 can be prevented from tilting, and therefore, at least a part of the opening 1100 can be prevented from being exposed. Therefore, the entire opening 1100 can be closed via the cover member 2100.

[0057] When the opening 1100 is closed, the molten material transport device is transported again. Then, when the molten material transport device reaches a position where the opening 1100 needs to be opened again while moving, for example, the desulfurization agent input position, the opening 1100 is opened. For this purpose, the cover part 2000 is moved in the opposite direction to the closing operation of the opening 1100 described above to open the opening 1100. That is, first, the cover part 2000 is lifted using the lifting drive part 5000. For this reason, the cover member 2100 is separated from the upper side of the container 1000 to open the opening 1100. Then, when the cover part 2000 is lifted, it is preferable that the support part 3000 is operated so as to support the cover part 2000. Thereafter, as shown in Fig. 6, the forward / reverse drive unit 4000 is operated to move the cover unit 2000 backward. At this time, the cover unit 2000 is moved backward so that the cover member 2100 is positioned on one side of the opening 1100 without facing the opening 1100. As a result, the opening of the container 1000 is fully opened. Once the opening 1100 is opened, a raw material, for example, a heat raising agent, is poured into the container 1000. Once the raw material has been poured, the cover unit 2000 is again moved forward and downward to close the opening. There may be multiple locations along the route of the melt transport device to reach its final destination where the opening 1100 needs to be opened, so that the opening and closing operations of the opening 1100 as described above can be performed multiple times.

[0058] After that, when the molten iron transport device reaches the final destination, it stops moving. At this time, the final destination may be a steelmaking plant where the contents of phosphorus (P), sulfur (S), and carbon (C) in the molten iron are adjusted. Then, the molten iron in the molten iron transport device is discharged to the outside. That is, the vessel 1000 is rotated using the first and second rotary drive units 8200a and 8200b to lower the height of the opening 1100. As a result, the molten iron is discharged through the opening 1100 of the vessel 1000, and the discharged molten iron is charged into another vessel, for example, a ladle, disposed below the vessel 1000. Although the above has been explained in a simplified manner, each of the forward / reverse control unit 7110, the lift control unit 7120, and the support control unit 7130 may operate in response to a command signal input from a remote control R operated by an operator H to control the forward / reverse drive unit 4000, the lift drive unit 5000, the support unit 3000, and the support height adjustment unit 6000.

[0059] Fig. 7 is a graph showing the change in temperature of molten pig iron over time when the molten pig iron is transported by the molten pig iron transporting devices according to the examples of the present invention and the comparative examples. Table 1 shows the temperature drop per second, per minute, and per hour when the molten pig iron is transported by the molten pig iron transporting devices according to the examples of the present invention and the comparative examples. Here, the molten material transport device according to the comparative example does not have a cover portion, and is moved without covering the opening portion. 7, the embodiment maintains a higher temperature than the comparative example over the entire time period, and it can be seen that the temperature drops more slowly in the embodiment than in the comparative example after 200 seconds.

[0060] [Table 1]

[0061] Referring to Table 1, when comparing the rate at which the temperature of the molten iron drops per second, per minute, and per hour, the rates are even lower in the examples than in the comparative examples. This shows that when a melt is moved using the melt transport device according to the embodiment, the drop in the temperature of the melt can be effectively suppressed. Thus, in the embodiment, the opening 1100 is opened and closed by horizontally moving the cover member 2100, that is, by moving it back and forth. That is, the opening 1100 can be opened and closed by moving the cover member 2100 backward to one side of the opening 1100 or forward toward the opening 1100, while minimizing the height to which the cover member 2100 is raised or lowered above the opening 1100. Therefore, the opening 1100 of the container 1000 can be easily opened and closed in a limited space. When the cover part 2000 is moved to open or close the opening 1100, the cover part 2000 can be prevented from tilting by supporting the cover part 2000 using the support part 3000. In other words, the cover part 2000 can be prevented from tilting to one side. Therefore, the cover part 2000 can be easily moved forward and backward.

[0062] This also makes it possible to prevent the cover member 2100 closing the opening 1100 from tilting. Therefore, it is possible to prevent a gap from being generated between the cover member 2100 and the container 1000, and thereby it is possible to prevent at least a part of the opening 1100 from being exposed to the outside. Therefore, when the opening 1100 is closed by the cover member 2100, it is possible to minimize a drop in the temperature of the molten material in the container 1000. In the embodiment, the molten material transport device moves while being equipped with a rechargeable power supply unit 7200. Therefore, the opening 1100 can be opened and closed without being connected to an external power supply, and the opening 1100 can be freely opened and closed as necessary. [Industrial Applicability]

[0063] According to the embodiment of the present invention, the opening of the container can be easily opened and closed in a limited space. In addition, when the cover part is moved to open or close the opening, the cover part is prevented from sagging or tilting. This allows the cover part to be easily moved and prevents at least a part of the opening from being exposed to the outside. This makes it possible to prevent or suppress a drop in the temperature of the molten material in the container. The opening can be opened and closed without being connected to an external power source, and can be freely opened and closed as required. [Explanation of symbols]

[0064] 1000: Container 1100:Opening 2000: Cover 2100: Cover material 2200: Arm 3000: Support part 3100: Support drive source 3200: Support rod 3300: Rotating body 4000: Forward and reverse drive unit 4100: Forward and reverse drive source 4200: Forward and reverse drive 4210: Pulley 4220: Belt 4300: Bass 4400: Connecting parts 4600: Guide parts 5000: Lifting drive unit 5100: Lift drive source 5200: Lifting drive unit 6000: Support height adjustment unit 6100: Guide parts 6200: Movable block 6300: Height adjustment drive source 7100: Control unit 7110: Forward / reverse control unit 7120: Lift control unit 7130: Support control unit 7200: Power supply section 8100a: First housing 8100b: Secondary housing 8200a: First rotary drive unit 8200b: Second rotary drive unit 8300a: First running part 8300b: Second running part 8310: Frame 8320: Wheel 8400: Receiving stand A: Enlarged portion of Fig. 1 shown in Fig. 2 H: Operator M: Melt R: Remote control

Claims

1. A container having an internal space capable of accommodating a molten material and an opening through which the molten material can enter and exit; a cover part including a cover member capable of closing the opening, the cover part being positioned above the container and capable of moving forward and backward relative to the opening; a support part including a rotating body movable forward and backward relative to the cover part on the underside of the cover part so as to be in contact with the cover part; a forward / backward drive unit fastened to a lower portion of the cover unit on one side of the container so as to move the cover unit forward and backward; A molten material transport device characterized in that the support portion is positioned between the forward / reverse drive portion and the container, and is inclined upward so as to approach the opening as it progresses toward the rotating body.

2. The support portion is a support rod having one end facing the cover portion, the rotor being connected to the support rod, and the support rod being obliquely disposed upward so as to approach the opening as it advances toward the one end; a support drive source connected to the other end of the support rod and capable of moving the support rod forward and backward relative to the cover portion; The melt transport device according to claim 1, further comprising:

3. The melt transport device according to claim 1 , further comprising a support height adjustment unit connected to the support unit so as to raise and lower the support unit.

4. a lifting drive unit connected to a lower portion of the forward / reverse drive unit so as to lift and lower the forward / reverse drive unit; first and second housings coupled to opposite longitudinal ends of the container; Equipped with The forward / reverse drive unit and the lift drive unit are disposed on an upper portion of the first housing, 4. The molten material transport device according to claim 3, wherein the support portion and the support height adjustment portion are disposed on a side of the first housing.

5. a power supply unit disposed in the first housing and configured to provide power to each of the forward / reverse drive unit, the lift drive unit, the support unit, and the support height adjustment unit; The molten material transport device according to claim 4 , wherein the power supply unit comprises a battery.

6. The molten material transport device according to claim 4, characterized in that it is equipped with a control unit arranged in the first housing, capable of controlling the operation of the forward / reverse drive unit, the lift drive unit, the support unit and the support height adjustment unit by wirelessly receiving command signals input from the outside.

7. a control unit disposed in the first housing and capable of controlling the operation of the forward / reverse drive unit, the lift drive unit, the support unit, and the support height adjustment unit; an operation button disposed on the first housing and capable of delivering a command signal to the control unit; The melt transport device according to claim 4, further comprising:

8. The operation of the forward / reverse drive unit, the lift drive unit, the support unit, and the support height adjustment unit can be controlled, The melt transport device according to claim 4, further comprising an operating handle disposed on the first housing.

9. conveying a melt transport device having a melt contained within a vessel; an opening and closing process for opening and closing the opening of the container; Including, The opening and closing process includes: a forward / backward movement process of moving the cover portion forward or backward relative to the opening; a first supporting step of supporting the cover part from below as the cover part moves forward or backward; Including, a lifting process of lifting or lowering the cover part before or after the forward / reverse movement process; a second supporting step of supporting the rising or falling cover part from below; Including, the first and second supporting steps include a step of contacting a rotating body positioned below the cover part with the cover part, A method for transporting a molten material, wherein the first supporting step includes a step of rotating the rotating body by a force that moves the cover part forward or backward.

10. the step of bringing the rotating body into contact with the cover portion includes a step of moving the rotating body forward and backward relative to the cover portion, 10. The method of claim 9, wherein the step of moving the rotor back and forth relative to the cover portion includes a step of moving the rotor back and forth at an incline such that a distance between the rotor and the opening gradually decreases as the height of the rotor increases.

11. The method for transporting molten material according to claim 9, characterized in that the process of contacting the rotating body with the cover portion includes a process of contacting the rotating body with an area other than the area facing the opening when a portion of the cover portion is positioned to face the opening so as to close the opening.

12. The method for transporting a molten material according to claim 9, wherein each of the forward and backward movement process, the first and second support processes, and the lifting and lowering process is operated using electric power.

13. The molten material transporting method according to claim 9, characterized in that each of the forward and backward movement process, the first and second support processes, and the lifting and lowering process includes a process of generating a command signal via a remote control that is provided separately from the molten material transporting device and is wirelessly connected to the cover portion and the rotating body.

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