An electric double-girder metallurgical casting bridge crane with movable auxiliary hook

Abstract

This utility model discloses an electric double-girder metallurgical casting bridge crane with a movable auxiliary hook, including a gantry frame, a double-girder traveling trolley mounted on the gantry frame and equipped with a built-in traveling motor, a trolley traveling mechanism mounted below both ends of the double-girder traveling trolley and assembled with the gantry frame, a driver's control room mounted on one side of the double-girder traveling trolley, and a traveling trolley assembly mounted above the double-girder traveling trolley. The traveling trolley assembly includes a main traveling trolley and an auxiliary traveling trolley movably mounted on the main traveling trolley. The main traveling trolley and the auxiliary traveling trolley cooperate to complete the lifting and casting operations of metallurgical steel ladles. By adopting a collaborative design of the main traveling trolley and the auxiliary traveling trolley, the functions of large-scale heavy-load lifting of molten steel ladles and small-scale precise casting are separated. Precise positioning is achieved through the independent displacement of the auxiliary traveling trolley, improving casting accuracy and stability, and ensuring operational safety.

Description

Technical Field

[0001] This utility model specifically relates to an electric double-beam metallurgical casting bridge crane with a movable auxiliary hook. Background Technology

[0002] In the metallurgical casting industry, the hoisting and pouring of molten steel ladles is a core and high-risk process. Traditionally, this process is generally carried out using a double-girder bridge crane equipped with a single lifting trolley. However, this traditional equipment has significant limitations in practical applications.

[0003] The main technical problem lies in the contradiction between the precision of micro-movements of the trolley and the main trolley, and operational safety. Specifically: 1. When the final alignment of a ladle weighing hundreds of tons of molten steel with the casting gate is required, the operator can only achieve this by repeatedly starting and braking the massive crane trolley or main trolley. This "micro-movement of the trolley" has extremely high inertia, easily causing violent shaking of the ladle, leading to the risk of molten steel spillage and seriously threatening the safety of personnel and equipment; 2. Frequent micro-movements keep the main lifting mechanism under harsh conditions of heavy-load start-stop for extended periods, accelerating the wear and fatigue of key components, resulting in high equipment failure rates, high maintenance costs, and shortened service life; 3. The fixed operating range of a single trolley limits adjustment space when facing complex casting positions or needing to avoid obstacles, affecting the efficiency and smoothness of the production process. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an electric double-girder metallurgical casting bridge crane with a movable auxiliary hook.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A movable auxiliary hook electric double-girder metallurgical casting bridge crane includes a gantry frame, a double-girder traveling trolley mounted on the gantry frame with a built-in traveling motor, a trolley traveling mechanism mounted below both ends of the double-girder traveling trolley and assembled with the gantry frame, a driver's control cab mounted on one side of the double-girder traveling trolley, and a traveling trolley assembly mounted above the double-girder traveling trolley. The traveling trolley assembly includes a main traveling trolley and an auxiliary traveling trolley movably mounted on the main traveling trolley. The main traveling trolley and the auxiliary traveling trolley cooperate with each other to complete the hoisting and casting operations of metallurgical ladles.

[0006] Preferably, the main traveling trolley includes a main traveling trolley frame, a main trolley electric hoist mounted on the main traveling trolley frame, and a main hook located below the main traveling trolley frame and connected to the main trolley electric hoist.

[0007] Furthermore, the main traveling trolley also includes a secondary trolley guide rail installed above the main traveling trolley frame. The secondary traveling trolley is mounted on the main traveling trolley via the secondary trolley guide rail and can move along it.

[0008] Furthermore, the main trolley electric hoist includes a main hook drive motor with a brake mounted on the drive shaft, a main hook drive reducer connected to the main hook drive motor, and a main hook chain drum connected to the main hook drive reducer.

[0009] Preferably, the auxiliary traveling trolley includes an auxiliary traveling trolley frame, an auxiliary trolley electric hoist mounted on the auxiliary traveling trolley frame, and an auxiliary hook located below the auxiliary traveling trolley frame and connected to the auxiliary trolley electric hoist.

[0010] Furthermore, the auxiliary trolley electric hoist includes an auxiliary hook drive motor with a brake mounted on the drive shaft, an auxiliary hook drive reducer connected to the auxiliary hook drive motor, and an auxiliary hook chain drum connected to the auxiliary hook drive reducer.

[0011] Preferably, the gantry frame is provided with a trolley travel track beam on its inner side.

[0012] Preferably, the main beam of the double-beam traveling trolley is provided with a trolley traveling track.

[0013] The beneficial effects of this utility model are as follows: 1. The auxiliary traveling trolley can move laterally on the guide rail of the main traveling trolley. After the ladle is hoisted to the casting position, there is no need to move the entire huge main traveling trolley and double-beam traveling trolley. Only the lightweight auxiliary traveling trolley needs to be driven to make fine adjustments to the ladle and achieve precise alignment between the casting gate and the casting mold. The starting and braking inertia of the double-beam traveling trolley or the main traveling trolley is large, which can easily cause the ladle to shake violently. Using the auxiliary traveling trolley for fine adjustments makes the movement more stable, greatly reduces the shaking of molten steel, and improves the casting quality and safety. 2. The precise positioning adjustment is handled by the auxiliary traveling trolley, reducing the frequency of starting and braking of the main trolley electric hoist. This helps reduce the mechanical wear and heat load on the main trolley electric hoist, extending its overhaul cycle and service life, especially for critical components such as brakes and motors. In addition, the cooperation between the auxiliary and main traveling trolleys achieves precise positioning and smooth movement, directly reducing the risk of serious accidents such as molten steel spillage and ladle puncture. The dual braking system of the auxiliary and main traveling trolleys provides double insurance for hoisting extremely important molten steel, with a higher degree of safety redundancy. Attached Figure Description

[0014] Figure 1 This is a structural diagram of an electric double-girder metallurgical casting bridge crane with a movable auxiliary hook according to the present invention. Figure 2 for Figure 1 Top view; Figure 3 for Figure 1 Structural diagram of the central traveling trolley assembly; Figure 4 for Figure 3 Top view. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0016] Example like Figure 1-4 As shown, an electric double-girder metallurgical casting bridge crane with movable auxiliary hook includes a gantry frame 1, a double-girder traveling trolley 2 mounted on the gantry frame 1 with a built-in traveling motor, a trolley traveling mechanism 3 mounted below both ends of the double-girder traveling trolley 2 and assembled with the gantry frame 1, a driver control cab 4 mounted on one side of the double-girder traveling trolley 2, and a traveling trolley assembly 5 mounted above the double-girder traveling trolley 2.

[0017] The inner side of the gantry frame 1 is provided with a trolley travel track beam 11, which facilitates the displacement of the double-beam traveling trolley 2 on the gantry frame 1.

[0018] The double-beam traveling trolley 2 is provided with a trolley traveling track 21 on its main beam, which facilitates the movement of the traveling trolley assembly 5 above the double-beam traveling trolley 2 along the trolley traveling track 21.

[0019] The traveling trolley assembly 5 includes a main traveling trolley 51 and an auxiliary traveling trolley 52 movably mounted on the main traveling trolley 51. The main traveling trolley 51 and the auxiliary traveling trolley 52 cooperate to complete the hoisting and casting operations of metallurgical steel ladles. Specifically, the double-girder metallurgical casting bridge crane enhances the flexibility and adaptability of hoisting and casting operations by setting a movable auxiliary hook. In particular, the coordinated work of the main traveling trolley 51 and the auxiliary traveling trolley 52 improves the hoisting capacity and accuracy of the equipment, effectively meeting the complex hoisting needs of metallurgical steel ladles.

[0020] The main traveling trolley 51 includes a main traveling trolley frame 511, a main trolley electric hoist 512 installed above the main traveling trolley frame 511, and a main hook 513 located below the main traveling trolley frame 511 and connected to the main trolley electric hoist 512.

[0021] The main traveling trolley 51 also includes a secondary trolley guide rail 514 mounted above the main traveling trolley frame 511. The secondary traveling trolley 52 is mounted on the main traveling trolley 51 via the secondary trolley guide rail 514 and can move along it. The secondary trolley guide rail 514 ensures that the secondary traveling trolley 52 can move linearly in a predetermined direction, avoiding swaying and deviation. It is a key mechanical foundation for achieving precise positioning. In addition, integrating the secondary trolley guide rail 514 onto the main traveling trolley frame 511 eliminates the need for a complex second trolley rail system on the crane beam, simplifying the overall structure and reducing manufacturing costs and weight.

[0022] The main trolley electric hoist 512 includes a main hook drive motor 5121 with a brake mounted on the drive shaft, a main hook drive reducer 5122 connected to the main hook drive motor 5121, and a main hook chain drum 5123 connected to the main hook drive reducer 5122.

[0023] The auxiliary traveling trolley 52 includes an auxiliary traveling trolley frame 521, an auxiliary trolley electric hoist 522 mounted on the auxiliary traveling trolley frame 521, and an auxiliary hook 523 located below the auxiliary traveling trolley frame 521 and connected to the auxiliary trolley electric hoist 522.

[0024] The auxiliary trolley electric hoist 522 includes an auxiliary hook drive motor 5221 with a brake mounted on the drive shaft, an auxiliary hook drive reducer 5222 connected to the auxiliary hook drive motor 5221, and an auxiliary hook chain drum 5223 connected to the auxiliary hook drive reducer 5222.

[0025] The brakes are firmly locked when the main trolley electric hoist 512 and the auxiliary trolley electric hoist 522 stop to prevent the ladle from falling accidentally. The main hook drive reducer 5122 and the auxiliary hook drive reducer 5222 can provide strong torque to lift the heavy ladle, while making the running speed controllable, ensuring the power, stability and safety of the lifting action of the main trolley electric hoist 512 and the auxiliary trolley electric hoist 522.

[0026] During operation, the double-girder traveling trolley 2 travels on the gantry 1 to the placement area of ​​the metallurgical ladle. Then, the main traveling trolley 51 travels on the double-girder traveling trolley 2 to directly above the metallurgical ladle. The main trolley electric hoist 512 starts and lowers the main hook 513. After the main hook 513 hooks with the lifting lug of the metallurgical ladle, the main trolley electric hoist 512 starts again to lift the metallurgical ladle. Then, the double-girder traveling trolley 2 and the main traveling trolley 51 move simultaneously, moving the metallurgical ladle to the casting point. At this time, the auxiliary traveling trolley 52 moves and adjusts its position, and the auxiliary trolley electric hoist 522 starts to lower the ladle. The auxiliary hook 523 is attached to the auxiliary lifting lug of the metallurgical steel ladle. Then, the auxiliary trolley electric hoist 522 is used to retrieve the ladle and lift it up for casting. After casting is completed, the main traveling trolley 51 moves to move the metallurgical steel ladle away from the casting point. At the same time, the auxiliary traveling trolley 52 starts the auxiliary trolley electric hoist 522 to lower the auxiliary hook 523, so that the metallurgical steel ladle is upright until the auxiliary hook 523 is detached from the metallurgical steel ladle. Finally, the main trolley electric hoist 512 on the main traveling trolley 51 starts to lower the main hook 513. The work is completed after the main hook 513 is detached from the metallurgical steel ladle.

[0027] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, shall fall within the scope of protection of this utility model.

Claims

1. A movable auxiliary hook electric double-girder metallurgical casting bridge crane, comprising a gantry (1), a double-girder traveling trolley (2) mounted on the gantry (1) and having a built-in traveling motor, a trolley traveling mechanism (3) mounted below both ends of the double-girder traveling trolley (2) and assembled with the gantry (1), a driver control cab (4) mounted on one side of the double-girder traveling trolley (2), and a traveling trolley assembly (5) mounted above the double-girder traveling trolley (2), characterized in that: The traveling trolley assembly (5) includes a main traveling trolley (51) and an auxiliary traveling trolley (52) movably mounted on the main traveling trolley (51). The main traveling trolley (51) and the auxiliary traveling trolley (52) cooperate with each other to complete the hoisting and casting operations of the metallurgical ladle.

2. The electric double-girder metallurgical casting bridge crane with movable auxiliary hook according to claim 1, characterized in that: The main traveling trolley (51) includes a main traveling trolley frame (511), a main trolley electric hoist (512) installed above the main traveling trolley frame (511), and a main hook (513) located below the main traveling trolley frame (511) and connected to the main trolley electric hoist (512).

3. The electric double-girder metallurgical casting bridge crane with movable auxiliary hook according to claim 2, characterized in that: The main traveling trolley (51) also includes a secondary trolley guide rail (514) installed above the main traveling trolley frame (511). The secondary traveling trolley (52) is installed on the main traveling trolley (51) via the secondary trolley guide rail (514) and can move along it.

4. The electric double-girder metallurgical casting bridge crane with movable auxiliary hook according to claim 2, characterized in that: The main trolley electric hoist (512) includes a main hook drive motor (5121) with a brake mounted on the drive shaft, a main hook drive reducer (5122) connected to the main hook drive motor (5121), and a main hook chain drum (5123) connected to the main hook drive reducer (5122).

5. The electric double-girder metallurgical casting bridge crane with movable auxiliary hook according to claim 1, characterized in that: The auxiliary trolley (52) includes an auxiliary trolley frame (521), an auxiliary trolley electric hoist (522) mounted on the auxiliary trolley frame (521), and an auxiliary hook (523) located below the auxiliary trolley frame (521) and connected to the auxiliary trolley electric hoist (522).

6. The electric double-girder metallurgical casting bridge crane with movable auxiliary hook according to claim 5, characterized in that: The auxiliary trolley electric hoist (522) includes an auxiliary hook drive motor (5221) with a brake mounted on the drive shaft, an auxiliary hook drive reducer (5222) connected to the auxiliary hook drive motor (5221), and an auxiliary hook chain drum (5223) connected to the auxiliary hook drive reducer (5222).

7. The electric double-girder metallurgical casting bridge crane with movable auxiliary hook according to claim 1, characterized in that: The gantry frame (1) is provided with a trolley travel track beam (11) on its inner side.

8. The electric double-girder metallurgical casting bridge crane with movable auxiliary hook according to claim 1, characterized in that: The double-beam traveling trolley (2) has a trolley traveling track (21) on its main beam.

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