Hot steel billet transport carriage

Abstract

The utility model relates to the technical field of ferrous metallurgy, in particular to a hot billet transportation carriage which comprises a bottom plate, a front carriage plate, a rear carriage plate, side carriage plates, a control part and a gas replacement device located in the carriage, the front carriage plate and the rear carriage plate are fixedly arranged at the two ends of the bottom plate, and the side carriage plates are arranged on the left side and the right side of the bottom plate respectively. The inner surfaces of the front carriage plate, the rear carriage plate and the side carriage plates are all provided with heat preservation layers, and the heat loss of hot steel billets is reduced through the effect of the heat preservation layers. The gas replacement device comprises a gas inlet pipe, a gas control valve, an exhaust pipe and an exhaust fan, air in the carriage is replaced, it is guaranteed that the steel billets are transported in the low-oxygen atmosphere, and the oxidation loss rate of the steel billets is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of iron and steel metallurgy, in particular to a hot steel billet transport carriage. Background Art

[0002] As the name implies, the "hot delivery and hot loading" of steel billets is a simple energy-saving technology that keeps the high-temperature steel billets warm during the steel production process and directly transports them to the heating furnace for heating before "strike while the iron is hot". In addition to reducing fuel consumption per ton of steel and improving production efficiency, the "hot delivery and hot loading" process of steel billets has another extraordinary performance - the steel billets are quickly loaded onto trucks after they are "hot" out of the furnace, and are directly loaded into the furnace for heating by road transportation, eliminating the "warehouse entry" link in the traditional steel billet heating operation process of "warehouse entry before loading into the furnace", effectively alleviating the problems of limited steel billet stacking space and tight railway transportation. In addition, the "hot delivery and hot loading" process of steel billets significantly improves the heating quality of steel billets, and significantly reduces the temperature unevenness caused by heating cold billets, creating favorable conditions for further improving the quality of finished steel products.

[0003] Chinese patent CN 216969471 U discloses a hot steel billet insulation transport vehicle, comprising a vehicle frame, a bottom plate arranged on the vehicle frame, and a hot steel billet loading frame arranged on the bottom plate. The thermal deformation of the transport vehicle body is reduced by a heat insulation device arranged on the bottom plate and located between the bottom plate and the hot steel billet loading frame. Although the bottom plate is protected, the protection of the side compartment plate is not disclosed, and the above-mentioned transport vehicle does not take into account the heat loss rate and oxidation loss rate during the billet transportation process. Utility Model Content

[0004] The utility model aims to provide a hot steel billet transport carriage, which can ensure that the steel billets are transported under the condition of low oxidation rate and has small heat loss during the transportation process.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A hot steel billet transport carriage, comprising a bottom plate, a front compartment plate, a rear compartment plate, a side compartment plate, a control part and a gas replacement device located inside the carriage, wherein the front compartment plate and the rear compartment plate are fixedly arranged at both ends of the bottom plate, the side compartment plates are respectively arranged on the left and right sides of the bottom plate, and the inner surfaces of the front compartment plate, the rear compartment plate and the side compartment plates are all provided with a thermal insulation layer; the gas replacement device comprises an air intake pipe, a gas control valve, an exhaust pipe and an exhaust fan, one end of the air intake pipe is connected to an air source outside the carriage, and the other end is connected to the interior of the carriage, the control end of the gas control valve is connected to the control part, one end of the exhaust pipe is connected to the exhaust end of the exhaust fan, and the other end extends to the outside of the carriage, and the control end of the exhaust fan is connected to the control part.

[0007] The above-mentioned hot steel billet transport carriage is also provided with a heating device, which includes a bracket and a heating wire. The upper end surface of the bracket is serpentinely coiled with the heating wire, and the bracket is located on the inner side of the front compartment plate and / or the rear compartment plate.

[0008] The above-mentioned hot steel billet transport carriage, the control part includes a manual button S, a temperature sensor T, an oxygen concentration sensor G, a CPU and an electronic control circuit, the manual button is installed at a position outside the carriage for convenient operation, the temperature sensor T is installed near the air outlet of the intake pipe, the oxygen concentration sensor G is installed inside the exhaust end box, the manual button S is connected to the input end P1.0 of the CPU, the temperature sensor T is connected to the input end P1.1 of the CPU, the oxygen concentration sensor G is connected to the input end P1.2 of the CPU, the output end P2.0 of the CPU is connected to the electronic control end of the drive device, the output end P2.1 of the CPU is connected to the electronic control end of the heating wire, and the output end P2.2 of the CPU is connected to the electronic control end of the exhaust fan and the gas control valve.

[0009] The above-mentioned hot billet transport carriage, the side compartment plate includes a first side compartment plate and a second side compartment plate, the first side compartment plate includes a first side panel, a first top panel and a first snap-fit ​​plate, one side of the first side panel is hinged to the bottom panel, and the other side is fixedly connected to the first top panel, the other end of the first top panel is connected to the first snap-fit ​​plate, the extension line of the first snap-fit ​​plate is perpendicular to the extension line of the first side panel, the thickness of the first snap-fit ​​plate is half of the first top panel, and the first side compartment plate and the second side compartment plate have the same structure.

[0010] In the above-mentioned hot steel billet transport carriage, the outer sides of the front compartment plate and the rear compartment plate are respectively provided with a driving device for driving the two side compartment plates to engage or open with each other.

[0011] The above-mentioned hot steel billet transport carriage, the driving device includes a hydraulic cylinder, a fixed seat and two sets of connecting rod mechanisms, the control end of the hydraulic cylinder is connected to the CPU, one side of the fixed seat is fixedly connected to the bottom plate, and the upper end surface thereof is fixedly connected with the hydraulic cylinder, the piston rod of the hydraulic cylinder is hinged to the two sets of connecting rod mechanisms, and the two sets of connecting rod mechanisms are respectively connected to the side compartment plate on one side.

[0012] The above-mentioned hot steel billet transport carriage, the two sets of connecting rod mechanisms include a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is hinged to the piston rod of the hydraulic cylinder, and the other end is hinged to the middle part of the second connecting rod, one end of the second connecting rod is hinged to the fixed seat, and the other end is hinged to the third connecting rod, and the other end of the third connecting rod is hinged to the side compartment plate on the same side.

[0013] The beneficial effects of adopting the above technical solution are:

[0014] The utility model is provided with a heat-insulating layer on the inner surfaces of the front compartment plate, the rear compartment plate and the side compartment plate, so as to reduce the heat loss of the hot steel billet through the effect of the heat-insulating layer, and a gas replacement device is arranged inside the compartment to replace the air in the compartment, so as to ensure that the steel billet is transported in a low-oxygen atmosphere and reduce the oxidation loss rate of the steel billet. Meanwhile, in order to further reduce the heat loss rate of the steel billet, the utility model adds a heating wire for heating the interior of the compartment; in addition, the utility model is also provided with a control part, which can control the opening and closing of the side compartment plate with one key, and the air replacement device and the heating device are also connected to the control part, and the opening and closing of the gas control valve, the exhaust fan and the heating wire are controlled by the CPU; the utility model is also provided with a hydraulic cylinder and a connecting rod mechanism, so that the connecting rod mechanism can drive the side compartment plate to open and close automatically under the drive of the hydraulic cylinder, without manual operation, which is simple and convenient, saves time, and is conducive to improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 This is a schematic diagram of the structure of the utility model (not drawn to scale);

[0017] Figure 2 This is a schematic diagram of the structure of the utility model after the side compartment panel is opened (not drawn to scale);

[0018] Figure 3 It is a schematic diagram of the structure of the heating device and the gas replacement device on the front compartment plate of the utility model (not drawn to scale);

[0019] Figure 4 It is a schematic diagram of the structure of the heating device and the gas replacement device on the rear compartment panel of the utility model (not drawn to scale);

[0020] Figure 5 It is a schematic diagram of the electrical principle of the circuit part of the utility model.

[0021] In the figure: 1, bottom plate; 2, front compartment plate; 3, rear compartment plate; 4, side compartment plate; 41, first side plate; 42, first top plate; 43, first snap-fit ​​plate; 44, second side plate; 45, second top plate; 46, second snap-fit ​​plate; 47, sealing layer; 48, insulation layer; 51, air inlet end; 52, exhaust end; 53, air inlet pipe; 54, gas control valve; 55, exhaust pipe; 56, one-way valve; 57, fan bracket; 58, exhaust fan; 59, exhaust port; 61, bracket; 62, heating wire; 71, hydraulic cylinder; 72, fixing seat; 73, first connecting rod; 74, second connecting rod; 75, third connecting rod; 76, guide member; 8, CPU; T, temperature sensor; G, oxygen concentration sensor; S, manual button; K1, drive relay; K2, heating relay; K3, ventilation relay. DETAILED DESCRIPTION

[0022] Example

[0023] like Figure 1-5 As shown, the utility model includes a bottom plate 1, a front compartment plate 2, a rear compartment plate 3, a side compartment plate 4, a control portion and a gas replacement device located inside the compartment, the front compartment plate 2 and the rear compartment plate 3 are fixedly arranged at both ends of the bottom plate 1, the side compartment plates 4 are respectively arranged on the left and right sides of the bottom plate 1, and the inner surfaces of the front compartment plate 2, the rear compartment plate 3 and the side compartment plates 4 are all provided with a thermal insulation layer 48, and the heat loss of the hot steel billet is reduced by the effect of the thermal insulation layer 48.

[0024] The gas replacement device of the utility model includes an air inlet end 51 and an air exhaust end 52. The air inlet end 51 is a cubic box structure, located at the corner of the front compartment plate 2 close to the bottom plate 1 and the first side plate 41. An air inlet pipe 53 and a gas control valve 54 are arranged inside the air inlet end. One end of the air inlet pipe 53 passes through the side wall of the air inlet end 51 and the side compartment plate 4 and is connected to an external gas source, and the other end passes through the side wall on the other side of the air inlet end 51 and is connected to the interior of the compartment. The gas enters the interior of the compartment via the air inlet pipe 53 and the gas control valve 54. In this embodiment, the external gas source is an inert gas storage cylinder.

[0025] like Figure 4 As shown, the exhaust end 52 is also a cubic box structure, located at the corner of the rear compartment panel 3 close to the second side panel 44 and the second top panel 45, which is equivalent to the air intake end 51 and the exhaust end 52 occupying the two ends of the diagonal line inside the compartment.

[0026] An exhaust pipe 55 is provided inside the exhaust end 52 of the utility model, and one end of the air outlet of the exhaust pipe 55 penetrates the side wall and the side compartment plate 4 of the exhaust end 52, and a one-way valve 56 is provided in the pipe section of the exhaust pipe 55 located outside the car, so that the air outside the car cannot enter the car, and the other end of the exhaust pipe 55 is connected to the exhaust end of the exhaust fan 58, and the exhaust fan 58 is fixedly connected to the side wall of the exhaust end 52 through a fan bracket 57. An exhaust port 59 is also provided on the side wall of the exhaust end opposite to the air inlet of the exhaust pipe, and the exhaust port 59 is connected to the interior of the car, and the gas in the car enters the exhaust end through the exhaust port 59 and is discharged through the exhaust pipe 55. The gas control valve 54 and the exhaust fan 58 are controlled to open or close by the ventilation relay K3, and the ventilation relay K3 is connected to the output end P2.2 of the CPU8 through a transistor. After the steel billets are placed in the carriage and the side panels are closed, the CPU 8 issues a command to control the gas control valve 54 and the exhaust fan 58 to open. Inert gas continuously enters the carriage through the air intake pipe, while the air inside the carriage is discharged through the exhaust pipe. The oxygen concentration sensor G measures the oxygen concentration and transmits it back to the CPU until the oxygen concentration is lower than the set value. The gas control valve 54 and the exhaust fan 58 are closed. If the oxygen concentration is higher than the set value during transportation, the gas control valve 54 and the exhaust fan 58 are reopened to ensure that the steel billets are transported in a low-oxygen atmosphere.

[0027] The utility model also has a heating device on the front compartment plate 2 and the rear compartment plate 3. The heating device includes a bracket 61 and a heating wire 62. The bracket 61 includes a leg and a support end. The cross section of the support end is a "mouth" shape, and the four corners are connected to the leg. The leg passes through the insulation layer and is fixed on the front compartment plate 2 or the rear compartment plate 3 on that side. The heating wire 62 is serpentinely coiled on the side of the support end away from the leg. The heating wire 62 is turned on or off by the heating relay K2. The heating relay K2 is connected to the output terminal P2.1 of the CPU through a transistor. During the transportation of the billet, the temperature sensor T sends the measured temperature value to the CPU. When the temperature is lower than the set value, the CPU controls the heating relay K2 to turn on the power supply, and the heating wire starts to heat up until the temperature reaches the set value and stops heating. The heat loss during the transportation of the billet is reduced by an external heat source.

[0028] like Figure 2As shown, the side compartment plate 4 includes a first side compartment plate and a second side compartment plate, the first side compartment plate includes a first side panel 41, a first top panel 42 and a first buckle plate 43, one side of the first side panel 41 is hinged to the bottom panel 1 through a plurality of hinges, and the other side is fixedly connected to the first top panel 42, the angle between the first side panel 41 and the first top panel 42 is an obtuse angle, the other end of the first top panel 42 is connected to the first buckle plate 43, the extension line of the first buckle plate 43 is perpendicular to the extension line of the first side panel 41, the thickness of the first buckle plate 43 is half of the first top panel 42, the inner side surface is flush with the inner side surface of the first top panel 42, and the outer side surface is located in the middle of the side wall of the first top panel 42.

[0029] The second side compartment plate of the utility model includes a second side panel 44, a second top panel 45 and a second buckle plate 46. The second side panel 44 and the second top panel 45 have the same structure as the first side panel 41 and the first top panel 42. The thickness of the second buckle plate 46 is half of the second top panel 45. The outer side surface is flush with the outer side surface of the second top panel 45, and the inner side surface is located in the middle of the side wall of the second top panel 45. When the compartment is closed, the first buckle plate 43 and the second buckle plate 46 partially overlap to ensure the sealing of the top of the compartment.

[0030] like Figure 1-2 As shown, the outer sides of the front compartment plate and the rear compartment plate are also provided with a driving device for driving the left and right side compartment plates to engage or open each other. The driving device includes a fixed seat 72, a hydraulic cylinder 71 and two sets of connecting rod mechanisms. The hydraulic cylinder 71 is controlled by a driving relay K1, and the driving relay K1 is connected to the output terminal P2.0 of the CPU8 through a transistor. The hydraulic cylinder 71 is fixed on the fixed seat 72, and the piston rod of the hydraulic cylinder 71 is hinged with the two sets of connecting rod mechanisms. The two sets of connecting rod mechanisms each include a first connecting rod 73, a second connecting rod 74 and a third connecting rod 75. One end of the first connecting rod 73 is hinged with the piston rod of the hydraulic cylinder 71, and the two ends of the connecting shaft of the two are respectively located inside two guide members 76. The bottom end of the guide member 76 is fixedly connected to the fixed seat 72, and a movable groove is provided on the upper part. Through the action of the movable groove, it is ensured that the connecting shaft will not tilt during the up and down movement. The other end of the first link 73 is hinged to the middle part of the second link 74 through the first link shaft, the end of the second link 74 close to the connection with the first link 73 is hinged to the fixed seat 72 through the second link support, the second link support is fixed on the fixed seat 72, the end of the second link 74 away from the connection with the first link is hinged to the third link 75, the other end of the third link 75 is hinged to the side compartment plate on the same side through the third link support, and the third link support is fixedly connected to the side compartment plate on the same side.

[0031] In order to ensure the sealing of the car compartment, the first side compartment plate and the second side compartment plate are also provided with a sealing layer 47, and the sealing layer 47 is located at both ends of the inner side walls of the first side compartment plate and the second side compartment plate, that is, the position where the first side compartment plate and the second side compartment plate are in contact with the front compartment plate and the rear compartment plate.

[0032] The control part of the utility model includes a manual button S, a temperature sensor T, an oxygen concentration sensor G, a CPU8 and an electronic control circuit. The manual button S is installed at a position outside the car for convenient operation, and is used to control the snapping and opening of the side compartment panel. The temperature sensor T is installed near the air outlet of the intake pipe 53, and is used to monitor the temperature inside the car. When the steel billet is placed in the car and starts to replace the gas, the temperature at this position is lower than that at other positions in the car, so when the temperature here reaches the set value, it is equivalent to that the temperature of the entire car has reached the set value. The oxygen concentration sensor G is installed inside the exhaust end box, and is used to monitor the oxygen concentration inside the car. When gas is used to replace the air in the car, the oxygen concentration near the outlet pipe is the lowest, and the oxygen concentration inside the exhaust end is the highest, so the oxygen concentration sensor G is arranged inside the exhaust end box. The manual button S is connected to the input terminal P1.0 of the CPU8, the temperature sensor T is connected to the input terminal P1.1 of the CPU, and the oxygen concentration sensor G is connected to the input terminal P1.2 of the CPU8.

[0033] The entire workflow: after putting the steel billet into the carriage, press the manual button S, CPU8 issues a command, the drive device drives the left and right side compartment panels to buckle together, the oxygen concentration sensor G sends the oxygen concentration value back to the CPU, the CPU issues a command, the gas control valve 54 and the exhaust fan 58 are opened, the inert gas enters the carriage and starts to replace the air, with the continuous entry of the inert gas, the temperature in the carriage decreases, the temperature sensor T sends the temperature value back to CPU8, when the temperature is lower than the set value, CPU8 issues a command, the heating wire 62 of the front compartment panel and the rear compartment panel starts to heat, so that the temperature in the carriage rises rapidly until the temperature reaches the set value and stops heating, when the oxygen concentration is lower than the set value, CPU8 issues a command, the gas control valve 54 and the exhaust fan 58 are closed, in the process of transporting the steel billet, CPU8 determines whether it is necessary to start the heating device and the gas replacement device through the monitoring values ​​of the temperature sensor T and the oxygen concentration sensor G.

[0034] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hot steel billet transport carriage, characterized in that: The invention comprises a bottom plate (1), a front compartment plate (2), a rear compartment plate (3), a side compartment plate (4), a control part and a gas replacement device located inside the compartment, wherein the front compartment plate (2) and the rear compartment plate (3) are fixedly arranged at the two ends of the bottom plate (1), the side compartment plates (4) are arranged on the left and right sides of the bottom plate (1), and the inner surfaces of the front compartment plate (2), the rear compartment plate (3) and the side compartment plates (4) are all provided with a heat preservation layer (48); the gas replacement device comprises an air intake pipe (53), a gas control valve (54), an exhaust pipe (55) and an exhaust fan (58), one end of the air intake pipe (53) is connected to an air source outside the compartment, and the other end is connected to the interior of the compartment, the control end of the gas control valve (54) is connected to the control part, one end of the exhaust pipe (55) is connected to the exhaust end of the exhaust fan (58), and the other end extends to the outside of the compartment, and the control end of the exhaust fan (58) is connected to the control part.

2. The hot steel billet transport carriage according to claim 1, characterized in that: A heating device is also provided, the heating device comprising a bracket (61) and a heating wire (62), the heating wire (62) being laid in a serpentine coil on the upper end surface of the bracket (61), and the bracket (61) being located on the inner side surface of the front compartment plate (2) and / or the rear compartment plate (3).

3. The hot steel billet transport carriage according to claim 1 or 2, characterized in that: The control part comprises a manual button S, a temperature sensor T, an oxygen concentration sensor G, a CPU (8) and an electric control circuit. The manual button S is installed at a position outside the vehicle body for convenient operation. The temperature sensor T is installed near the air outlet of the air intake pipe (53). The oxygen concentration sensor G is installed inside the box of the exhaust end (52). The manual button S is connected to the input end P1.0 of the CPU (8). The temperature sensor T is connected to the input end P1.1 of the CPU (8). The oxygen concentration sensor G is connected to the input end P1.2 of the CPU (8). The output end P2.0 of the CPU (8) is connected to the electric control end of the drive device. The output end P2.1 of the CPU (8) is connected to the electric control end of the heating wire (62). The output end P2.2 of the CPU (8) is connected to the electric control ends of the exhaust fan (58) and the gas control valve (54).

4. The hot steel billet transport carriage according to claim 3, characterized in that: The side compartment plate (4) comprises a first side compartment plate and a second side compartment plate, the first side compartment plate comprises a first side panel (41), a first top panel (42) and a first buckle plate (43), one side of the first side panel (41) is hinged to the bottom panel (1), and the other side is fixedly connected to the first top panel (42), the other end of the first top panel (42) is connected to the first buckle plate (43), the extension line of the first buckle plate (43) is perpendicular to the extension line of the first side panel (41), the thickness of the first buckle plate (43) is half of the first top panel (42), and the first side compartment plate and the second side compartment plate have the same structure.

5. The hot steel billet transport carriage according to claim 4, characterized in that: A driving device for driving the two side compartment plates (4) to engage or open each other is also provided on the outer sides of the front compartment plate (2) and the rear compartment plate (3).

6. The hot steel billet transport carriage according to claim 5, characterized in that: The driving device comprises a hydraulic cylinder (71), a fixed seat (72) and two sets of connecting rod mechanisms, wherein a control end of the hydraulic cylinder (71) is connected to a CPU (8), one side of the fixed seat (72) is fixedly connected to a bottom plate (1), and the upper end surface of the fixed seat (72) is fixedly connected to the hydraulic cylinder (71), the piston rod of the hydraulic cylinder (71) is hinged to the two sets of connecting rod mechanisms, and the two sets of connecting rod mechanisms are respectively connected to a side compartment plate (4) on one side.

7. The hot steel billet transport carriage according to claim 6, characterized in that: The two sets of connecting rod mechanisms each include a first connecting rod (73), a second connecting rod (74) and a third connecting rod (75); one end of the first connecting rod (73) is hinged to the piston rod of the hydraulic cylinder (71), and the other end is hinged to the middle part of the second connecting rod (74); one end of the second connecting rod (74) is hinged to the fixed seat (72), and the other end is hinged to the third connecting rod (75); the other end of the third connecting rod (75) is hinged to the side compartment plate (4) on the same side.

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