A sampling vehicle for converter steelmaking

Abstract

This invention discloses a sampling vehicle for converter steelmaking, relating to the field of molten steel sampling technology in converter steelmaking. The vehicle platform is equipped with wheels and a drive device. A positioning seat is located at the center of the upper part of the platform, and a main rod is rotatably connected to its upper part. The two ends of the main rod are respectively located above the two ends of the platform. A hydraulic rod is fixedly mounted at one end of the platform, and a partition is fixedly mounted at the other end. A vertical groove is formed in the middle of the main rod. An extension rod is movably connected to the end of the main rod away from the hydraulic rod, and either the main rod or the extension rod passes through the vertical groove. A sampling device is provided at the other end of the extension rod. A support sleeve is provided at the connection between the extension rod and the main rod, with its two ends fixedly connected to the extension rod and the main rod respectively. This invention has a simple and reasonable structure, is convenient and flexible to operate, does not require occupying space around the converter, is low in cost, and has a high degree of automation, enabling unmanned operation on-site. It greatly improves the safety of molten steel sampling and reduces direct damage to the main rod due to excessive force.

Description

Technical Field

[0001] The invention relates to the technical field of molten steel sampling in converter steelmaking, in particular to a sampling vehicle for converter steelmaking. Background Art

[0002] Converter steelmaking uses molten iron, scrap steel and ferroalloys as main raw materials. It completes the steelmaking process in the converter without the aid of external energy, relying on the physical heat of the molten iron itself and the chemical reaction between the components of the molten iron to generate heat. Converters are divided into acidic and alkaline types according to the refractory materials; they are divided into top blowing, bottom blowing and side blowing according to the position where the gas is blown into the furnace; they are divided into air converters and oxygen converters according to the type of gas. Among them, alkaline oxygen top blowing and top and bottom combined blowing converters are the most widely used due to their advantages such as fast production speed, large output, high single-furnace output, low cost and low investment.

[0003] In the process of converter steelmaking, it is often necessary to sample molten steel to check whether the molten steel meets the standards or is qualified. In actual work, molten steel is usually sampled manually using a hand-pushed sampling trolley in combination with a molten steel sampler. However, this operation is very dangerous and can easily cause harm to the staff.

[0004] For example, the invention patent with publication number CN203811419U, entitled a special vehicle for converter sampling, discloses a lever frame and a counterweight sampling rod and handrails at both ends thereof, a heat insulation board on the frame and two guide wheels at the bottom. The device is not only structurally unstable, but also still needs to be pushed by hand, with a low degree of automation and poor safety.

[0005] There are also some designs in the prior art that use automatic sampling, such as the invention patent with publication number CN204903227U, entitled Automatic Temperature Measurement and Sampling Device for Molten Steel, in which automatic sampling is achieved by a rail car, a rotating base and a cylinder. However, the telescopic cylinder does not provide special protection when there is unmelted scrap steel or hard slag in the furnace, which can easily cause the sampler to be blocked and difficult to descend. However, the telescopic cylinder will continue to perform the sampling operation, so it is easy for the long rod to bend or deform and be damaged. Frequent damage to the main rod not only adds cost, but also a large number of spare main rods take up warehouse space. In addition, its track setting is not flexible and occupies space, causing obstructions. Similarly, some equipment that uses a fixed robotic arm to set up a program for automatic sampling also occupies space around the converter and is relatively expensive. Therefore, a sampling vehicle for converter steelmaking is urgently needed to solve this problem. Summary of the invention

[0006] The object of the present invention is to provide a sampling vehicle for converter steelmaking to solve the problems mentioned in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sampling vehicle for converter steelmaking, comprising a vehicle plate, which is provided with wheels and a driving device for driving the wheels, a positioning seat is provided in the middle of the upper end of the vehicle plate, and the upper part thereof is rotatably connected with a main rod, and its rotation direction is horizontally arranged, and the two ends of the main rod are respectively located above the two ends of the vehicle plate, and a hydraulic rod is fixedly arranged at one end of the vehicle plate, and its lifting push rod is used to drive one end of the main rod to lift and lower, and a partition is fixedly arranged at the other end of the vehicle plate, and a vertical groove is opened in the middle thereof; an extension rod is movably connected to the end of the main rod away from the hydraulic rod, and the main rod or the extension rod passes through the vertical groove; a sampling device is provided at the other end of the extension rod for sampling, and a support sleeve is provided at the connection between the extension rod and the main rod, and its two ends are respectively fixedly connected to the extension rod and the main rod.

[0008] Preferably, the support sleeve is in an arc shape, and its two ends are respectively matched with the outer circumference of the extension rod and the main rod. The support sleeve is arranged at the lower ends of the extension rod and the main rod, and a plurality of mounting grooves are respectively opened at both ends for inserting bolts for fixed connection; a reinforcing rod is also provided at the lower end of the support sleeve, and its two ends are respectively fixedly arranged directly below the extension rod and the main rod.

[0009] Preferably, a first connecting plate is fixedly provided at one end of the main rod away from the hydraulic rod, and a second connecting plate is fixedly provided at one end of the extension rod close to the main rod. The first connecting plate and the second connecting plate are rotatably connected via a pin, and the rotation direction is parallel to the rotation direction of the main rod.

[0010] Preferably, a top plate is fixedly provided at the upper end of the lifting push rod of the hydraulic rod, on which two fixed plates are provided in parallel, a fixed shaft is fixedly provided at the upper part between the two, a movable groove is opened at the main rod located above the lifting push rod, and the middle part of the fixed shaft passes through the movable groove to limit the range of motion.

[0011] Preferably, the wheels include drive wheels and steering wheels.

[0012] Preferably, a fixing sleeve is fixedly provided at one end of the extension rod away from the main rod, and a molten steel sampler is connected to the lower end of the extension rod.

[0013] Preferably, the positioning seat includes two columns, a positioning shaft is fixedly arranged between the upper ends of the two columns, a through hole is opened in the middle of the main rod, and the positioning shaft passes through the through hole and is rotatably connected to the main rod.

[0014] Preferably, the hydraulic rod is also provided with a controller for controlling lifting and lowering, which is electrically connected to the driving device or connected to the control terminal by signal.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The sampling vehicle for converter steelmaking has a simple and reasonable structure, convenient and flexible operation, does not need to occupy the space around the converter, has low cost, high degree of automation, can realize unmanned operation on site, greatly improves the safety of molten steel sampling, and will not cause harm to the staff.

[0017] 2. The sampling vehicle for converter steelmaking can greatly reduce direct damage to the main rod due to excessive force, reduce the replacement cost of the main rod, and can use fewer spare main rods to reduce storage pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the upper end of the hydraulic rod of the present invention;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the connection between the extension rod and the main rod of the present invention;

[0021] Figure 4 It is a control schematic diagram of the present invention.

[0022] In the figure: 1. car plate; 2. driving wheel; 3. steering wheel; 4. driving device; 5. hydraulic rod; 6. top plate; 7. fixed plate; 8. fixed shaft; 9. movable groove; 10. main rod; 11. positioning shaft; 12. positioning seat; 13. partition; 14. vertical groove; 15. extension rod; 16. fixing sleeve; 17. molten steel sampler; 18. first connecting plate; 19. second connecting plate; 20. support sleeve; 21. mounting groove; 22. reinforcing rod; 23. controller. DETAILED DESCRIPTION

[0023] like Figure 1 As shown, a sampling vehicle for converter steelmaking comprises a vehicle plate 1, which is provided with wheels and a driving device 4 for driving the wheels. The wheels preferably include a driving wheel 2 and a steering wheel 3. The steering wheel 3 can be located at the front end or the rear end. For the sake of stability, it is best to provide at least two steering wheels 3 on both sides of the vehicle plate 1; a positioning seat 12 is provided in the middle of the upper end of the vehicle plate 1, and a main rod 10 is rotatably connected to its upper part, and its rotation direction is set horizontally. Specifically, the following methods can be adopted: the positioning seat 12 comprises two columns, and a positioning shaft 11 is fixedly provided between the upper ends of the two columns. A through hole is opened in the middle of the main rod 10, and the positioning shaft 11 passes through the through hole and is rotatably connected to the main rod 10; the two ends of the main rod 10 are respectively located above the two ends of the vehicle plate 1, and a hydraulic rod 5 is fixedly provided at one end of the vehicle plate 1, and its lifting push rod is used to drive one end of the main rod 10 to rise and fall. Specifically, the following methods can be adopted: refer to Figure 2 The upper end of the lifting push rod of the hydraulic rod 5 is fixed with a top plate 6, on which two fixed plates 7 are arranged in parallel, and a fixed shaft 8 is fixed at the upper part between the two. A main rod 10 is located above the lifting push rod and has a movable groove 9. The middle of the fixed shaft 8 passes through the movable groove 9 to limit the range of movement; a partition plate 13 is fixed on the other end of the car plate 1, and a vertical groove 14 is opened in the middle; the end of the main rod 10 away from the hydraulic rod 5 is movably connected to an extension rod 15, which can be specifically adopted in the following manner, see Figure 3A first connecting plate 18 is fixedly disposed at one end of the main rod 10 away from the hydraulic rod 5, and a second connecting plate 19 is fixedly disposed at one end of the extension rod 15 close to the main rod 10. The first connecting plate 18 and the second connecting plate 19 are rotatably connected via a pin, and the rotation direction thereof is parallel to the rotation direction of the main rod 10; the main rod 10 or the extension rod 15 passes through the vertical slot 14; a sampling device is disposed at the other end of the extension rod 15 for sampling, for example, a fixing sleeve 16 is fixedly disposed at one end of the extension rod 15 away from the main rod 10, and a molten steel sampler 17 is connected to the lower end thereof; a supporting sleeve 20 is disposed at the connection between the extension rod 15 and the main rod 10, and the two ends of the supporting sleeve are respectively fixedly connected to the extension rod 15 and the main rod 10.

[0024] See also Figure 3 In a preferred embodiment, the sleeve 20 is in an arc shape, and its two ends are matched with the outer circumference of the extension rod 15 and the main rod 10 respectively. More preferably, the extension rod 15 and the main rod 10 can be coaxial and have the same diameter, then the sleeve 20 can be set to a semi-circular tube shape, and its material is preferably steel. The sleeve 20 is arranged at the lower end of the extension rod 15 and the main rod 10, and a plurality of mounting grooves 21 are respectively opened at its two ends for inserting bolts for fixed connection; a reinforcing rod 22 is also provided at the lower end of the sleeve 20, and its two ends are respectively fixedly arranged directly below the extension rod 15 and the main rod 10. The structural strength of the sleeve 20 is further enhanced by the arrangement of the reinforcing rod 22, so that the sleeve 20 can withstand a large bending force.

[0025] If the extension rod 15 and the support sleeve 20 are not used, when there is unmelted scrap steel in the furnace or the slag is hard, the sampling device is hindered and difficult to descend. At this time, the hydraulic rod 5 continues to rise, and the main rod 10 is bound to be subjected to bending force, which in turn causes the main rod 10 to deform. After adopting the above structure, when the main rod 10 and the extension rod 15 are subjected to bending force, under the action of the bending force, the support sleeve 20 between the main rod 10 and the extension rod 15 will be deformed by force, and the main rod 10 and the extension rod 15 are also bent to each other through the first connecting plate 18 and the second connecting plate 19, thereby preventing the main rod 10 or the extension rod 15 from being directly damaged by excessive force, reducing the replacement cost of the main rod 10 and the extension rod 15, and subsequently only the support sleeve 20 needs to be disassembled for straightening or replaced with a new one according to the damage.

[0026] Furthermore, the hydraulic rod 5 is also provided with a controller 23 for controlling lifting, which is electrically connected to the drive device 4 or connected by signal to the control terminal, wherein the controller 23 may include an electric oil pump and a solenoid valve, etc., and a common hydraulic electric control device on the market may also be selected. The drive device 4 may use a DC motor, a DC inverter and a steering motor to respectively realize the operation of the driving wheel and the steering wheel. The control terminal can be electrically connected to the controller 23 and the drive device 4 through a long wire to realize remote control, or a signal receiving device can be respectively set at the controller 23 and the drive device 4 to transmit the action signal through wireless control methods such as WIFI, Bluetooth, infrared, etc. The control terminal can be a PC, PLC, remote control, etc., which specifically controls the sampling vehicle to approach the converter and reach its position, raise the hydraulic rod 5 to lift the main rod 10, and the sampling device descends to the molten steel to take a sample, and then reverse control can be used to complete the sampling. The present invention has a high degree of automation and can realize unmanned operation on site (by remote control), which greatly improves the safety of molten steel sampling and will not cause harm to the staff.

[0027] The above are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined by the claims.

[0028] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A sampling vehicle for converter steelmaking, characterized in that: The vehicle comprises a vehicle plate (1), which is provided with a wheel and a driving device (4) for driving the wheel. A positioning seat (12) is provided at the middle of the upper end of the vehicle plate (1). The upper part of the positioning seat (12) is rotatably connected to a main rod (10). The rotation direction of the positioning seat (12) is arranged horizontally. The two ends of the main rod (10) are respectively located above the two ends of the vehicle plate (1). A hydraulic rod (5) is fixedly provided at one end of the vehicle plate (1). The lifting push rod is used to drive one end of the main rod (10) to lift and lower. A partition plate (13) is fixedly provided at the other end of the vehicle plate (1). A vertical groove (14) is provided in the middle of the partition plate (13). An extension rod (15) is movably connected to the end of the main rod (10) away from the hydraulic rod (5). The main rod (10) or the extension rod (15) passes through the vertical groove (14). A sampling device is provided at the other end of the extension rod (15) for sampling. A support sleeve (20) is provided at the connection between the extension rod (15) and the main rod (10). The two ends of the support sleeve are respectively fixedly connected to the extension rod (15) and the main rod (10). The support sleeve (20) is in an arc shape, and its two ends respectively match the outer circumference of the extension rod (15) and the main rod (10). The support sleeve (20) is arranged at the lower ends of the extension rod (15) and the main rod (10), and a plurality of mounting grooves (21) are respectively provided at its two ends for inserting bolts for fixed connection. A reinforcing rod (22) is also provided at the lower end of the support sleeve (20), and its two ends are respectively fixedly arranged directly below the extension rod (15) and the main rod (10).

2. A sampling vehicle for converter steelmaking according to claim 1, characterized in that: A first connecting plate (18) is fixedly provided at one end of the main rod (10) away from the hydraulic rod (5), and a second connecting plate (19) is fixedly provided at one end of the extension rod (15) close to the main rod (10). The first connecting plate (18) and the second connecting plate (19) are rotatably connected via a pin, and the rotation direction thereof is parallel to the rotation direction of the main rod (10).

3. A sampling vehicle for converter steelmaking according to claim 1, characterized in that: A top plate (6) is fixedly provided at the upper end of the lifting push rod of the hydraulic rod (5), on which two fixed plates (7) are arranged in parallel, and a fixed shaft (8) is fixedly provided at the upper part between the two plates, and a movable groove (9) is provided on the main rod (10) located above the lifting push rod, and the middle part of the fixed shaft (8) passes through the movable groove (9) for limiting the range of movement.

4. A sampling vehicle for converter steelmaking according to claim 1, characterized in that: The wheels comprise a driving wheel (2) and a steering wheel (3).

5. The sampling vehicle for converter steelmaking according to claim 1, characterized in that: A fixing sleeve (16) is fixedly provided at one end of the extension rod (15) away from the main rod (10), and a molten steel sampler (17) is connected to the lower end of the extension rod (15).

6. A sampling vehicle for converter steelmaking according to claim 1, characterized in that: The positioning seat (12) comprises two upright posts, a positioning shaft (11) is fixedly arranged between the upper ends of the two posts, a through hole is opened in the middle of the main rod (10), and the positioning shaft (11) passes through the through hole and is rotatably connected to the main rod (10).

7. The sampling vehicle for converter steelmaking according to claim 1, characterized in that: The hydraulic rod (5) is also provided with a controller (23) for controlling lifting and lowering, and the controller (23) is electrically connected to the driving device (4) or is signal-connected to a control terminal.

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