Coal oxygen lance vehicle

Abstract

The utility model belongs to the technical field of coal oxygen lance cars, and particularly relates to a coal oxygen lance car which comprises a car frame, balance rail wheels are installed at the bottom of the car frame, a machine frame is installed on the upper portion of the car frame, the top of the machine frame is connected with an upper connecting rod in a rotating mode, and one end of the upper connecting rod is connected with a large pipeline guide frame in a rotating mode. According to the utility model, flexible movement is realized through the balance rail wheels at the bottom of the frame, and the pitching angle of the coal oxygen gun barrel can be accurately adjusted by matching with a connecting rod mechanism formed by the upper connecting rod, the lower connecting rod and the lifting cylinder; the motor drives the small fluted disc to be meshed with the large fluted disc to drive the gun barrel to rotate, and multi-angle operation is achieved. An auxiliary wheel in the gun barrel supports the coal oxygen lance to slide, a front end frame groove position is clamped with the lance body, the telescopic and rotating fine adjustment requirements are met, the whole set of structure works cooperatively, the equipment positioning precision and operation flexibility are remarkably improved, the labor intensity of workers is reduced, the safety risk in the high-temperature environment is reduced, and the service life of core components is prolonged. And the continuity and stability of industrial production are effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of coal oxygen lance vehicles, specifically coal oxygen lance vehicles. Background Technology

[0002] In industrial production fields such as steel smelting and recycled lead smelting, the oxy-coal lance plays a crucial role. During the melting period of electric arc furnace smelting, the oxy-coal lance injects pulverized coal and oxygen into the furnace, generating a high-temperature flame that effectively melts the furnace charge in the "cold zone." This not only increases the total heat input to the furnace but also reduces smelting power consumption, shortens smelting time, and significantly improves furnace productivity. Taking steelmaking as an example, after adopting oxy-coal injection technology in a 5-ton furnace, the average smelting time was shortened by 22 minutes, the average smelting power consumption decreased by 78 kWh / t, and the hourly output increased by 0.567 t / h.

[0003] However, current oxy-fuel lances face numerous challenges in practical applications. On the one hand, traditional oxy-fuel lances are mostly operated manually by workers, resulting in an extremely heavy workload. Workers must hold the lance for extended periods in harsh environments with high temperatures and high dust levels, leading to fatigue and significant safety hazards. On the other hand, existing oxy-fuel lances have a short lifespan. In scenarios such as recycled lead smelting, the lance must withstand high-temperature melting, slag erosion, chemical corrosion, and frequent, significant temperature changes within the furnace. Furthermore, it is subject to mechanical impacts during insertion and withdrawal, making it highly susceptible to damage and severely impacting production continuity and stability. For example, in steelmaking, due to the high-temperature flame on the gas and oxygen pipes, the lifespan of an oxy-fuel lance is typically only a few days, significantly increasing steel mill production costs. Therefore, developing a highly automated, long-lasting, and flexible oxy-fuel lance vehicle is of significant practical importance. Summary of the Invention

[0004] Technical problems to be solved

[0005] In view of the shortcomings of the prior art, this utility model provides a coal-oxygen lance vehicle, which solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A coal-oxygen lance vehicle includes a frame with balancing track wheels mounted at the bottom and a machine frame mounted on the upper part. An upper connecting rod is rotatably connected to the top of the machine frame, one end of which is rotatably connected to a large pipe guide. A lower connecting rod is rotatably connected to the bottom of the large pipe guide. A lifting cylinder is rotatably connected to a part of the upper connecting rod near the large pipe guide. A connecting rod is rotatably connected to the side wall of the large pipe guide, one end of which is rotatably connected to the lower part of an auxiliary sleeve. A main sleeve is fixedly connected to the top of the large pipe guide. A coal-oxygen lance tube is rotatably fitted within the main sleeve and the auxiliary sleeve. Two motors are fixedly connected to the top of the main sleeve. A small gear is fixedly connected to the output end of each motor, and the small gear is rotatably connected to a large gear in the same direction. A frame is fixedly connected to the front end of the coal-oxygen lance tube, and an auxiliary wheel is fixedly connected inside the rear end of the coal-oxygen lance tube. A coal-oxygen lance is slidably fitted inside the coal-oxygen lance tube.

[0009] Furthermore, one end of the lower connecting rod is rotatably connected to a point on the frame.

[0010] Furthermore, one end of the lifting cylinder is rotatably connected to a point on the frame.

[0011] Furthermore, the large gear disc is fixedly installed on the periphery of the oxy-fuel lance tube.

[0012] Furthermore, there are at least four auxiliary wheels, which are circumferentially distributed inside the oxy-fuel lance tube.

[0013] Furthermore, the frame has internal slots that are adapted to the shape of the oxy-fuel lance, allowing for engagement, extension, and rotation.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a coal-oxygen lance vehicle, which has the following beneficial effects:

[0016] This invention utilizes a balancing track wheel at the bottom of the frame for flexible movement. Combined with a linkage mechanism consisting of an upper connecting rod, a lower connecting rod, and a lifting cylinder, the pitch angle of the oxy-fuel lance can be precisely adjusted. A motor drives a small gear plate to mesh with a large gear plate, rotating the lance and enabling multi-angle operation. An auxiliary wheel inside the lance supports its sliding motion, and a slot in the front frame engages the lance body, satisfying the needs for fine-tuning extension and rotation. The entire structure works in synergy, significantly improving equipment positioning accuracy and operational flexibility, reducing manual labor intensity, minimizing safety risks in high-temperature environments, extending the service life of core components, and effectively ensuring the continuity and stability of industrial production. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2This is a side view of the structure of this utility model;

[0019] Figure 3 This utility model Figure 1 Schematic diagram of the structure at point A in the middle;

[0020] Figure 4 This is a schematic diagram of the auxiliary wheel and the installation structure of the oxy-fuel lance of this utility model.

[0021] In the diagram: 1. Chassis; 2. Balance track wheel; 3. Frame; 4. Upper connecting rod; 5. Large pipe guide; 6. Lower connecting rod; 7. Lifting cylinder; 8. Connecting rod; 9. Auxiliary sleeve; 10. Main sleeve; 11. Oxygen lance tube; 12. Motor; 13. Small gear; 14. Large gear; 15. Frame; 16. Auxiliary wheel; 17. Oxygen lance. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example

[0024] like Figure 1-4 As shown, an embodiment of the present invention provides a coal-oxygen lance vehicle, which includes a frame 1 that bears the weight of the entire vehicle and provides a mounting base for various components;

[0025] The bottom of the frame 1 is equipped with a balance track wheel 2, which supports the equipment and allows it to move along the track to adjust the working position;

[0026] The upper part of the frame 1 is equipped with a frame 3, which serves as a support base for the linkage mechanism, transmits the power of the lifting cylinder 7, and drives the upper linkage 4 and the large pipe guide 5 to move.

[0027] The top of the frame 3 is rotatably connected to the upper connecting rod 4, which together with the lower connecting rod 6 and the lifting cylinder 7 forms a four-bar linkage mechanism. The lifting cylinder 7 extends and retracts to drive the large pipe guide frame 5 to pitch and rotate, thereby adjusting the working angle.

[0028] One end of the upper connecting rod 4 is rotatably connected to the large pipe guide frame 5, supporting the coal oxygen lance tube 11. The angle is adjusted under the drive of the connecting rod mechanism, and the auxiliary sleeve 9 is driven to move synchronously through the connecting rod 8.

[0029] The bottom of the large pipe guide frame 5 is rotatably connected to the lower connecting rod 6, which forms a stable connecting rod structure with the upper connecting rod 4, assisting the large pipe guide frame 5 to move smoothly in pitch.

[0030] The upper connecting rod 4 is rotatably connected to a lifting cylinder 7 near the large pipe guide 5. The cylinder 7 provides power through extension and retraction, driving the upper connecting rod 4 to swing, thereby adjusting the pitch angle of the large pipe guide 5.

[0031] A connecting rod 8 is rotatably connected to the side wall of the large pipe guide 5, which transmits the movement of the large pipe guide 5 to the auxiliary sleeve 9, so that the auxiliary sleeve 9 and the main sleeve 10 synchronously support the coal oxygen lance tube 11.

[0032] One end of the connecting rod 8 is rotatably connected to the lower part of the auxiliary sleeve 9. The auxiliary main sleeve 10 supports the oxy-fuel lance 11, shares the force, and ensures the stability of the lance rotation.

[0033] The main sleeve 10 is fixedly connected above the large pipe guide frame 5, which mainly supports the coal-oxygen lance 11 and drives the lance 11 to rotate through the motor 12 and the gear transmission mechanism.

[0034] The main sleeve 10 and the auxiliary sleeve 9 are fitted with a rotating coal oxygen lance tube 11, which serves as the outer sleeve of the coal oxygen lance 17. The working direction is adjusted by rotating through the toothed disc drive, and the interior provides a sliding track and support for the coal oxygen lance 17.

[0035] Two motors 12 are fixedly connected to the top of the main sleeve 10 to provide power and drive the small gear 13 to rotate, which in turn drives the coal oxygen lance tube 11 to rotate through gear meshing.

[0036] The output end of the motor 12 is fixedly connected to a small gear 13, which transmits the rotational power of the motor 12 to the large gear 14 to realize the angle adjustment of the coal oxygen gun tube 11.

[0037] The small gear 13 meshes and rotates in the same direction with the large gear 14, amplifying the torque through gear transmission and driving the coal-oxygen lance 11 to rotate, thereby achieving precise angle control.

[0038] The front end of the oxy-fuel lance 11 is fixedly connected to a frame 15, which engages the oxy-fuel lance 17 through a slot, restricting its radial movement while allowing it to extend, retract, and rotate, thus achieving precise positioning of the working end.

[0039] An auxiliary wheel 16 is fixedly connected inside the rear end of the oxy-fuel lance 11 to support the oxy-fuel lance 17, reduce sliding friction, and ensure its smooth and stable forward and backward movement.

[0040] The oxygen lance 17 is slidably connected inside the oxygen lance tube 11 to perform specific operations, such as ignition and oxygen supply. It can be precisely aligned with the target position by extension, retraction and rotation for fine adjustment.

[0041] The working principle of the coal oxygen lance car is as follows: the balance track wheel 2 at the bottom of the frame 1 can move on the track to adjust the position of the equipment. The upper connecting rod 4, the large pipe guide 5, the lower connecting rod 6, and the lifting cylinder 7 at the top of the frame 3 form a linkage mechanism. When the lifting cylinder 7 extends or retracts, it drives the large pipe guide 5 to rotate around the frame 3 through the upper connecting rod 4, thereby achieving pitch angle adjustment. The large pipe guide 5 is connected to the auxiliary sleeve 9 through the connecting rod 8, which can drive the auxiliary sleeve 9 to move synchronously. The oxy-fuel lance 11 inside the main sleeve 10 and the auxiliary sleeve 9 is driven by the motor 12. The small gear 13 at the output end of the motor 12 meshes with the large gear 14 on the periphery of the oxy-fuel lance 11, driving the oxy-fuel lance 11 to rotate, thereby achieving angle adjustment. The oxy-fuel lance 17 is sleeved inside the oxy-fuel lance 11, and the auxiliary wheel 16 inside supports its sliding. The oxy-fuel lance 17 is manually adjusted by moving forward and pulling out. The front end is engaged through the slot of the frame 15, allowing it to extend and rotate inside the oxy-fuel lance 11, thereby completing precise operation at the target position.

[0042] like Figure 1 As shown, in some embodiments, one end of the lower link 6 is rotatably connected to a point on the frame 3. This design enables the lower link 6, the upper link 4, the frame 3, and the large pipe guide 5 to form a four-bar linkage. Through the rotation between the links and the extension and retraction of the lifting cylinder 7, the pitch angle of the large pipe guide 5 can be adjusted, ensuring structural stability and smooth movement during the angle change process.

[0043] like Figure 1 As shown, in some embodiments, one end of the lifting cylinder 7 is rotatably connected to a point on the frame 3. The lifting cylinder 7 pushes the upper connecting rod 4 to swing around the hinge point at the top of the frame 3 through telescopic movement, thereby driving the large pipe guide 5 to rotate around its connection point with the frame 3, thereby realizing the pitch angle adjustment of the coal oxygen lance tube 11.

[0044] like Figure 3 As shown, in some embodiments, the large gear 14 is fixedly installed on the periphery of the oxy-fuel lance tube 11. This design realizes the rotational adjustment of the oxy-fuel lance tube 11 through mechanical transmission. It has a compact structure and high transmission efficiency, and is one of the core components for the oxy-fuel lance vehicle to achieve multi-angle operation.

[0045] like Figure 4 As shown, in some embodiments, there are at least four auxiliary wheels 16, which are circumferentially distributed inside the oxy-fuel lance tube 11. The design of at least four auxiliary wheels 16 circumferentially distributed can ensure the uniformity of support strength and balance the force on the oxy-fuel lance 17 through symmetrical layout. Especially when the oxy-fuel lance 17 is extended for a long time, it can effectively prevent the lance body from sagging or shaking, and ensure the stability and accuracy during operation.

[0046] like Figure 1-4As shown, in some embodiments, the frame 15 has a slot inside, the shape of which is adapted to the shape of the oxy-fuel lance 17 for engagement, extension and rotation. This design, through a composite structure of "rigid engagement + flexible movement", enables the oxy-fuel lance 17 to maintain radial positioning accuracy while having axial and circumferential fine adjustment capabilities, thus solving the contradiction between "precise positioning" and "flexible operation" in industrial operations.

[0047] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A coal-oxygen lance car, comprising a frame (1), wherein a balance track wheel (2) is mounted on the bottom of the frame (1), characterized in that: A frame (3) is mounted on the upper part of the frame (1). The top of the frame (3) is rotatably connected to an upper connecting rod (4). One end of the upper connecting rod (4) is rotatably connected to a large pipe guide (5). The bottom of the large pipe guide (5) is rotatably connected to a lower connecting rod (6). A lifting cylinder (7) is rotatably connected to a part of the upper connecting rod (4) near the large pipe guide (5). A connecting rod (8) is rotatably connected to the side wall of the large pipe guide (5). One end of the connecting rod (8) is rotatably connected to the lower part of the auxiliary sleeve (9). A main sleeve is fixedly connected to the upper part of the large pipe guide (5). (10) A coal oxygen lance tube (11) is rotatably connected in the main sleeve (10) and the auxiliary sleeve (9). Two motors (12) are fixedly connected above the main sleeve (10). A small gear plate (13) is fixedly connected to the output end of the motor (12). The small gear plate (13) is meshed and rotatably connected to the large gear plate (14) in the same direction. A frame (15) is fixedly connected to the front end of the coal oxygen lance tube (11). An auxiliary wheel (16) is fixedly connected inside the rear end of the coal oxygen lance tube (11). A coal oxygen lance (17) is slidably connected inside the coal oxygen lance tube (11).

2. The coal-oxygen lance car according to claim 1, characterized in that: One end of the lower connecting rod (6) is rotatably connected to a point on the frame (3).

3. The coal-oxygen lance car according to claim 1, characterized in that: One end of the lifting cylinder (7) is rotatably connected to a point on the frame (3).

4. The oxy-fuel lance car according to claim 1, characterized in that: The large gear disc (14) is fixedly installed on the periphery of the oxy-fuel lance tube (11).

5. The coal-oxygen lance car according to claim 1, characterized in that: There are at least four auxiliary wheels (16), which are circumferentially distributed inside the oxy-fuel lance tube (11).

6. The oxy-fuel lance car according to claim 1, characterized in that: The frame (15) has a slot inside, the shape of which is adapted to the shape of the oxy-fuel gun (17) for locking, extension and rotation.

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