Split type ladle safety tractor

Abstract

The utility model relates to the technical field of tractors, in particular to a split type hot metal ladle safety tractor which comprises a tractor body used for conducting traction movement on a carriage bearing a hot metal ladle, a plurality of sets of installation grooves are symmetrically formed in the side wall of the tail end of the tractor body, and sleeves are fixedly installed in the installation grooves. The end, located outside the sleeve, of the abutting sliding rod is fixedly connected with a buffer block, and one end of the buffer block is fixedly connected with a buffer plate acting on the outer side wall of the compartment. Compared with the prior art, when the tractor body is in butt joint with a carriage for collision protection, the servo motor drives the rolling wheels to move from the narrow side of the guide frame groove to the wide side of the guide frame groove, the second spring is released and matched with the first spring for lifting and buffering, and therefore shaking of a ladle is reduced; and during stable traction, the servo motor reversely drives the roller to move to the narrower side to extrude the second spring to reduce the buffer so as to prevent the carriage from displacing, so that the safety and stability of the ladle are jointly guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of tractor technology, specifically a split-type molten iron ladle safety tractor. Background Technology

[0002] The molten iron ladle tractor is a core special transport equipment designed for high-temperature and high-risk scenarios in the iron and steel metallurgical industry, serving as a "logistics lifeline" connecting blast furnace tapping and converter steelmaking. Modern molten iron ladle tractors generally adopt customized designs such as high-strength, high-temperature resistant steel and heat-resistant wiring harnesses. Some also integrate ladle lid insulation devices, intelligent weighing systems, and precise positioning functions. With the upgrading of intelligent manufacturing and the application of technologies such as electrification, unmanned driving, remote control, and IoT monitoring, efficient scheduling, cooling control, and safety protection of molten iron transportation have been achieved, aligning with the green and intelligent development policies of the steel industry.

[0003] Current technical solutions in the field of molten iron ladle traction and transportation generally suffer from poor buffer adaptability and insufficient safety assurance, making it difficult to meet the differentiated safety requirements of docking collision protection and stable driving scenarios. On the one hand, the docking buffer structure of traditional molten iron ladle tractors mostly uses elastic components with fixed stiffness (such as non-adjustable spring buffer blocks) or rigid collision components. Their buffering effectiveness is fixed and cannot be dynamically adjusted according to the collision intensity during docking. This not only makes it easy for insufficient buffering to cause the collision force to be directly transmitted to the molten iron ladle, causing violent shaking of the molten iron or even the risk of spillage. On the other hand, existing technologies lack the ability to switch buffer states according to different scenarios. After docking is completed and the vehicle enters the stable driving stage, the buffer structure still maintains the same elastic state as during docking. It cannot adjust the buffering constraint for slight bumps and traction force fluctuations during driving, resulting in frequent ineffective shaking of the buffer components, causing relative displacement between the carriage and the tractor body, which undermines the driving stability of the molten iron ladle. It is also difficult to achieve process coordination between docking buffering and driving stability. This not only limits the safety control capability of the entire molten iron transportation process, but also slows down the overall efficiency due to the mismatch between the buffer state and scenario requirements. Overall, it is difficult to take into account both the impact absorption during docking and the stable support during driving.

[0004] Therefore, developing a new type of safe traction system that can dynamically adapt and adjust the buffer capacity according to different docking and driving scenarios of molten iron ladle traction is of urgent practical significance for improving the safety of the entire molten iron transportation process, enhancing scenario adaptability, and reducing safety hazards. Utility Model Content

[0005] The purpose of this utility model is to provide a split-type molten iron ladle safety tractor to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A split-type molten iron ladle safety tractor includes a tractor body for traction and movement of a carriage carrying molten iron ladles. The rear end side wall of the tractor body has multiple sets of mounting slots symmetrically opened. A sleeve is fixedly installed inside the mounting slot. A stop rod is slidably connected inside the sleeve. A buffer block is fixedly connected to one end of the stop rod outside the sleeve. A buffer plate that acts on the outer side wall of the carriage is fixedly connected to one end of the buffer block.

[0008] Furthermore, a guide frame is fixedly connected to the side wall of the buffer block, and the inner side wall of the guide frame is symmetrically provided with double-sided guide grooves.

[0009] Furthermore, two longitudinal guide rails are symmetrically fixedly installed on the rear end side wall of the tractor body between the mounting slots. The inner cavity of the longitudinal guide rail is movably connected to a bidirectional threaded rod through a bearing. The inner cavity of the longitudinal guide rail is slidably connected to two synchronously opposite sliding seats, and the sliding seats are threadedly connected to the bidirectional threaded rod through a threaded groove through the side wall.

[0010] Furthermore, a mounting block is fixedly connected to one end of the sliding seat, and limit sleeves are symmetrically fixedly installed on both sides of the mounting block. A clamping rod is slidably connected inside the limit sleeve, and a support seat is fixedly connected to one end of the clamping rod at the limit sleeve. A roller is movably connected inside the support seat through a bearing.

[0011] Furthermore, an annular groove is provided in the middle of the circumferential sidewall of the roller, and the roller cooperates with the double-sided guide groove of the guide frame through the annular groove.

[0012] Furthermore, each of the longitudinal guide rails is provided with a gear fixedly connected to the top of the bidirectional threaded rod, and the two gears are driven by chain meshing. A servo motor for driving the corresponding bidirectional threaded rod to rotate is fixedly installed at the bottom of one of the longitudinal guide rails.

[0013] Furthermore, a first spring is provided inside the sleeve, and the two ends of the first spring are fixedly connected to the inner wall of the sleeve and the end of the abutment slide rod, respectively. A second spring is provided inside the limiting sleeve, and the two ends of the second spring are fixedly connected to the inner wall of the limiting sleeve and the end of the abutment rod, respectively.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In the scenario of collision protection between the tractor body and the carriage, a servo motor drives a bidirectional threaded rod, gears, and chains to achieve synchronous transmission on both sides, ensuring consistent adjustment actions on both sides and preventing imbalance of the buffer plate's force. The rollers move from the narrower side to the wider side of the guide frame's double-sided guide grooves, causing the second spring inside the limiting sleeve to release, increasing the guide frame's sway amplitude. This, combined with the elastic extension and contraction of the first spring inside the sleeve and the sliding of the stop rod, forms a multi-level buffering effect. This adjustment not only efficiently absorbs the impact force generated by the docking collision but also enhances the buffer plate's buffering efficiency through adaptive structural changes. This reduces the violent shaking of the molten iron ladle inside the carriage caused by the collision from the source, lowering safety hazards such as molten iron spillage and ladle instability, and providing reliable safety protection for the molten iron ladle docking process.

[0016] 2. In a stable traction scenario where the tractor body and the carriage are in motion, the servo motor reverses its drive, causing the bidirectional threaded rod to rotate synchronously. This moves the roller from the wider side of the guide slot on both sides of the guide frame to the narrower side, compressing the second spring inside the limiting sleeve and limiting its extension and contraction, while simultaneously constraining the swaying amplitude of the guide frame. In this state, the movement space of the first spring and the stop slide rod inside the sleeve is compressed, and the buffering capacity of the buffer plate is reduced accordingly. This adjustment effectively avoids frequent shaking of the buffer components caused by slight bumps or fluctuations in traction force during travel, prevents unnecessary relative displacement between the carriage and the tractor body, ensures that the molten iron ladle remains stable throughout the transportation process, meets the safety requirements of dynamic driving environments, and further improves the overall stability and safety of molten iron transportation. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings;

[0018] Figure 1 This is a schematic diagram of the structure of this utility model applied to the carriage;

[0019] Figure 2 This is a schematic diagram of the tractor body structure in this utility model;

[0020] Figure 3 This is a schematic diagram of the sleeve structure in this utility model;

[0021] Figure 4 This is a schematic diagram of the longitudinal guide rail structure in this utility model;

[0022] Figure 5 This is a schematic diagram of the roller structure in this utility model;

[0023] Figure 6 This is a schematic diagram of the cooperation between the double-sided guide groove and the roller in this utility model;

[0024] Figure 7This is a schematic diagram of the double-sided guide groove structure on the inner side wall of the guide frame in this utility model.

[0025] Reference numerals in the attached drawings: 1. Tractor body; 2. Sleeve; 3. Abutment slide bar; 4. Buffer block; 5. Buffer plate; 6. Guide frame; 7. Longitudinal guide rail; 8. Double-sided threaded rod; 9. Sliding seat; 10. Carriage; 11. Mounting block; 12. Limit sleeve; 13. Abutment rod; 14. Roller; 15. Gear; 16. Chain; 17. Servo motor. Detailed Implementation

[0026] 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.

[0027] Example 1: As Figures 1-7 As shown, a split-type molten iron ladle safety tractor includes a tractor body 1 for traction and movement of a carriage 10 carrying molten iron ladles. Multiple sets of mounting slots are symmetrically opened on the rear side wall of the tractor body 1. A sleeve 2 is fixedly installed inside the mounting slot. A stop rod 3 is slidably connected inside the sleeve 2. A buffer block 4 is fixedly connected to one end of the stop rod 3 outside the sleeve 2. A buffer plate 5 acting on the outer side wall of the carriage 10 is fixedly connected to one end of the buffer block 4.

[0028] The buffer block 4 is fixedly connected to the side wall of the guide frame 6, and the inner side wall of the guide frame 6 is symmetrically provided with double-sided guide grooves.

[0029] Two longitudinal guide rails 7 are symmetrically fixedly installed on the rear side wall of the tractor body 1 between the mounting slots. The inner cavity of the longitudinal guide rail 7 is movably connected to a bidirectional threaded rod 8 through a bearing. The top of each longitudinal guide rail 7 is provided with a gear 15 fixedly connected to the top of the bidirectional threaded rod 8. The two gears 15 are driven by a chain 16. A servo motor 17 for driving the corresponding bidirectional threaded rod 8 to rotate is fixedly installed at the bottom of one of the longitudinal guide rails 7. A first spring is provided inside the sleeve 2, and the two ends of the first spring are fixedly connected to the inner wall of the sleeve 2 and the end of the abutment slide rod 3, respectively. A second spring is provided inside the limiting sleeve 12, and the two ends of the second spring are fixedly connected to the inner wall of the limiting sleeve 12 and the end of the abutment rod 13, respectively.

[0030] Example 2: The inner cavity of the longitudinal guide rail 7 is slidably connected to two synchronously moving sliding seats 9, and the sliding seats 9 are threadedly connected to the bidirectional threaded rod 8 through the threaded groove through the side wall. The inner cavity of each longitudinal guide rail 7 is slidably connected to two I-shaped sliding seats 9. The I-shaped structure of the sliding seats 9 is completely adapted to the inner groove of the longitudinal guide rail 7, which can prevent the sliding seats 9 from shifting left and right during movement.

[0031] A mounting block 11 is fixedly connected to one end of the sliding seat 9. Limiting sleeves 12 are symmetrically fixedly installed on both sides of the mounting block 11. A clamping rod 13 is slidably connected inside the limiting sleeve 12. A support seat is fixedly connected to one end of the clamping rod 13 at the limiting sleeve 12, and a roller 14 is movably connected inside the support seat via a bearing. An annular groove is formed in the middle of the circumferential side wall of the roller 14, and the roller 14 cooperates with the double-sided guide groove of the guide frame 6 through the annular groove.

[0032] Based on Embodiment 1 and Embodiment 2, the working principle of this utility model is as follows:

[0033] I. Collision protection scenario when the tractor body 1 docks with the carriage 10:

[0034] When the tractor body 1 needs to actively approach the carriage 10 carrying the molten iron ladle, and is about to complete the automatic docking of the hook tongue, hook lock and pin (such as the James coupler docking), a collision will inevitably occur at the moment of docking. If the buffering capacity is insufficient, the collision force will be directly transmitted to the molten iron ladle in the carriage 10, which will increase the risk of molten iron sloshing. Therefore, it is necessary to improve the buffering capacity of the buffer plate 5 through structural adjustment. The specific working principle is as follows:

[0035] The servo motor 17 fixed at the bottom of one of the longitudinal guide rails 7 starts, and its output shaft drives the bidirectional threaded rod 8 fixedly connected to it to rotate. The gear 15 fixedly connected to the top of the bidirectional threaded rod 8 rotates accordingly. Since the gears 15 at the top of the two longitudinal guide rails 7 are meshed and driven by the chain 16, the gear 15 on the other side will rotate synchronously, thereby driving the bidirectional threaded rod 8 in the inner cavity of the other longitudinal guide rail 7 to rotate synchronously as well, realizing the power transmission of "single-sided drive and double-sided synchronization", avoiding the imbalance of the buffer plate 5 caused by inconsistent adjustment actions on both sides.

[0036] When the bidirectional threaded rod 8 rotates synchronously, the two sliding seats 9 in the same longitudinal guide rail 7 will move synchronously in opposite directions under the action of the thread driving force. At this time, the mounting block 11 fixedly connected to one end of the sliding seat 9 will move synchronously with the sliding seat 9. The limiting sleeves 12 symmetrically fixedly installed on both sides of the mounting block 11, and the abutting rod 13 slidably connected in the limiting sleeve 12 will also move accordingly. Finally, the roller 14 connected to the bearing in the support seat at the end of the abutting rod 13 will be precisely aligned with the guide frame 6 fixedly connected to the side wall of the buffer block 4 and roll into the double-sided guide groove of the guide frame 6, and gradually move from the "narrower side" of the double-sided guide groove to the "wider side".

[0037] When the roller 14 rolls to the "wider side" of the double guide groove of the guide frame 6, the lateral squeezing force of the guide frame 6 on the roller 14 is reduced, and the second spring inside the limiting sleeve 12 will gradually release from the previous compressed state. During the release of the second spring, it will push the clamping rod 13 to slide outward in the limiting sleeve 12, thereby driving the roller 14 to have more room to move in the wider guide groove of the guide frame 6. This change directly increases the sway amplitude of the guide frame 6 significantly. The guide frame 6 can flexibly produce small displacements according to the direction of the collision force and is no longer restricted by the narrow groove.

[0038] As the swing amplitude of the guide frame 6 increases, the buffer block 4, which is fixedly connected to it, will have a more flexible displacement capability. When the tractor body 1 collides with the carriage 10, the outer wall of the carriage 10 will first contact the buffer plate 5. The buffer plate 5 will transfer the collision force to the buffer block 4. The buffer block 4 will initially unload the force through the flexible swing of the guide frame 6, and then be compressed by the abutment slide rod 3. The first spring in the sleeve 2 will further absorb the collision force. Under the synergistic effect of the two, the collision force is weakened layer by layer, and finally the buffering capacity between the buffer plate 5 and the carriage 10 is significantly improved, minimizing the shaking of the molten iron ladle caused by the collision.

[0039] II. Stable traction driving scenario of tractor body 1 and carriage 10:

[0040] When the tractor body 1 and the carriage 10 are connected (hook, hook lock, and pin locking) and enter the stable travel phase of molten iron transportation, if the buffer plate 5 maintains a high buffering capacity, slight bumps or changes in traction during travel will cause frequent shaking of components such as the buffer plate 5 and buffer block 4. This will, in turn, cause relative displacement between the carriage 10 and the tractor body 1, increasing the risk of molten iron ladle shaking. Therefore, it is necessary to reduce the buffering capacity to ensure a stable connection between the carriage 10 and the tractor body 1. The specific working principle is as follows:

[0041] At this time, the servo motor 17 will switch its rotation direction, driving the bidirectional threaded rod 8 connected to it to rotate in the opposite direction. Similarly to the docking stage, the gear 15 at the top of the bidirectional threaded rod 8 will drive the gear 15 on the other side to rotate in the opposite direction synchronously through the chain 16, thereby causing the bidirectional threaded rods 8 in the inner cavities of the two longitudinal guide rails 7 to rotate in the opposite direction at the same time. Under the action of the threaded driving force, the two sliding seats 9 in the same longitudinal guide rail 7 will move in the opposite direction synchronously along the inner groove of the longitudinal guide rail 7 (opposite to the direction of movement in the docking stage, such as the previously upward sliding seat 9 moving downward and the previously downward sliding seat 9 moving upward).

[0042] The movement of the sliding seat 9 will cause the mounting block 11, the limiting sleeve 12, the clamping rod 13 and the roller 14 to move synchronously in the opposite direction, so that the roller 14 gradually rolls from the "wider side" of the double-sided guide groove of the guide frame 6 to the "narrower side".

[0043] When roller 14 rolls to the "narrower side" of the double-sided guide groove of guide frame 6, the inner wall of the narrow groove of guide frame 6 will exert a lateral squeezing force on the annular groove of roller 14. This squeezing force will be transmitted to the clamping rod 13 through roller 14, pushing the clamping rod 13 to slide into the limiting sleeve 12, thereby compressing the second spring inside the limiting sleeve 12. At this time, the second spring is in a compressed state and will generate a reverse elastic force, firmly pulling the clamping rod 13 and limiting the sliding range of the clamping rod 13. As a result, the wobbling space of guide frame 6 cooperating with roller 14 is greatly compressed, the wobbling amplitude is significantly reduced, and it can even only maintain a small rigid displacement, and can no longer wobble as flexibly as in the docking stage.

[0044] After the swaying amplitude of the guide frame 6 is limited, its ability to drive the displacement of the buffer block 4 is also weakened. At this time, the first spring inside the sleeve 2 has its extension and contraction strictly controlled due to the reduced sliding amplitude of the stop rod 3. When the tractor body 1 encounters slight bumps during travel, most of the force generated by the contact between the buffer plate 5 and the outer wall of the carriage 10 will be offset by the rigid support of the guide frame 6 and the small extension and contraction of the spring, rather than by large-scale swaying to dissipate force as in the high-buffering state. This combination significantly reduces the ability of the buffer plate 5 to absorb impact force, avoiding relative swaying between the carriage 10 and the tractor body 1 due to excessive buffering, and ultimately ensuring the stability of the molten iron ladle during transportation.

[0045] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

[0046] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A split-type molten iron ladle safety tractor, comprising a tractor body (1) for traction and movement of a carriage (10) carrying molten iron ladles, characterized in that, The rear end side wall of the tractor body (1) is symmetrically provided with multiple sets of mounting slots. A sleeve (2) is fixedly installed inside the mounting slot. A stop rod (3) is slidably connected inside the sleeve (2). A buffer block (4) is fixedly connected to one end of the stop rod (3) outside the sleeve (2). A buffer plate (5) acting on the outer side wall of the carriage (10) is fixedly connected to one end of the buffer block (4). The buffer block (4) has a guide frame (6) fixedly connected to its side wall, and the inner side wall of the guide frame (6) is symmetrically provided with double-sided guide grooves. Two longitudinal guide rails (7) are symmetrically fixedly installed on the rear end side wall of the tractor body (1) between the mounting slots. The inner cavity of the longitudinal guide rail (7) is movably connected to a bidirectional threaded rod (8) through a bearing. The inner cavity of the longitudinal guide rail (7) is slidably connected to two synchronously opposite sliding seats (9), and the sliding seats (9) are threadedly connected to the bidirectional threaded rod (8) through a threaded groove through the side wall.

2. The split-type molten iron ladle safety tractor according to claim 1, characterized in that, One end of the sliding seat (9) is fixedly connected to an installation block (11). Limit sleeves (12) are symmetrically fixedly installed on both sides of the installation block (11). A clamping rod (13) is slidably connected inside the limit sleeve (12). A support seat is fixedly connected to one end of the clamping rod (13) located at the limit sleeve (12), and a roller (14) is movably connected inside the support seat through a bearing.

3. A split-type molten iron ladle safety tractor according to claim 2, characterized in that, The roller (14) has an annular groove in the middle of its circumferential sidewall, and the roller (14) cooperates with the double-sided guide groove of the guide frame (6) through the annular groove.

4. A split-type molten iron ladle safety tractor according to claim 1, characterized in that, The top of each of the longitudinal guide rails (7) is provided with a gear (15) that is fixedly connected to the top of the bidirectional threaded rod (8). The two gears (15) are driven by a chain (16). A servo motor (17) for driving the corresponding bidirectional threaded rod (8) to rotate is fixedly installed at the bottom of one of the longitudinal guide rails (7).

5. A split-type molten iron ladle safety tractor according to claim 2, characterized in that, The sleeve (2) is provided with a first spring inside, and the two ends of the first spring are fixedly connected to the inner wall of the sleeve (2) and the end of the abutment slide rod (3) respectively. The limiting sleeve (12) is provided with a second spring inside, and the two ends of the second spring are fixedly connected to the inner wall of the limiting sleeve (12) and the end of the abutment rod (13) respectively.

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