Movable trolley casting device

Abstract

The movable trolley casting device is provided with a movable trolley, the movable trolley carries a protective gas tank and a mechanical arm, and a protective casting assembly is arranged at the execution tail end of the mechanical arm; the protective gas tank communicates with the protective casting assembly through the gas pipe assembly so as to provide protective gas for casting, and the protective casting assembly is used for splash-proof precise casting. The technical problems that in the prior art, impurities exist in castings, casting is not safe, and the production cost is high are solved, and the casting product quality is improved; the device can be conveniently used on different castings, the one-to-many effect is achieved, and the production cost of an enterprise is reduced; splash-proof casting can be achieved, harm to personal safety of operators is avoided, ground sweeping operation is omitted, and safety, cleanliness and reliability are achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas injection device for metal casting in operation and transportation, and specifically relates to a mobile trolley casting device. Background Technology

[0002] Modern casting faces the following major problems: First, due to the lack of gas-protected casting, molten steel is prone to secondary oxidation and the formation of inclusions, affecting the quality of the castings and failing to meet the requirements of high-quality steel. Second, during the steel casting process, the loose connection between the ladle and the casting gate of the mold can easily lead to molten steel splashing, posing a safety hazard to operators. Furthermore, protective casting devices are usually fixed at the ladle nozzle or the casting gate of the mold, meaning that each ladle or mold needs to be equipped with a protective casting device, significantly increasing production costs. To address these issues, the following improved technical solutions are proposed. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a mobile trolley casting device that combines a mobile trolley, argon protection, and protective casting to solve the technical problems of impurities in castings, unsafe casting, and high production costs in the prior art.

[0004] The technical solution adopted by this utility model is as follows: a mobile trolley casting device, which has a mobile trolley, a protective gas tank and a robotic arm, and a protective casting component at the end of the robotic arm; the protective gas tank is connected to the protective casting component through a gas pipe assembly to provide protective gas for casting, and the protective casting component is used for splash-proof and precise casting.

[0005] In the above technical solution, the protective gas cylinder is further filled with inert gas.

[0006] In the above technical solution, preferably, the inert gas is argon or helium.

[0007] In the above technical solution, preferably, the mobile trolley is a flatbed trolley.

[0008] In the above technical solution, the robotic arm further includes a rotation mechanism and a pitch adjustment mechanism.

[0009] In the above technical solution, the protective casting component is further composed of a steel ladle docking shell, a sealing ring, and a protective casting cylinder that are connected as one unit from top to bottom.

[0010] In the above technical solution, further: the ladle docking shell connects to the ladle; the bottom center of the ladle docking shell is provided with a ladle drain outlet, and a sealing ring is provided between the ladle drain outlet and the ladle docking shell; the lower end of the sealing ring is sealed and connected to the protective casting cylinder; the protective casting cylinder is connected to a protective gas cylinder; the protective casting cylinder is also used for splash protection during casting; the protective casting cylinder is provided with a cylinder casting port, which is concentrically fixed to the bottom end of the ladle drain outlet, and the cylinder casting port is used to reduce the diameter of the casting channel and to align with the mold inlet of the mold.

[0011] In the above technical solution, further: the ladle drain outlet is fixed to the cylinder casting port through a conical structure.

[0012] In the above technical solution, preferably, the sealing ring is a refractory material sealing ring.

[0013] Advantages of this utility model compared to the prior art:

[0014] 1. This utility model introduces a protective gas during casting, which reduces secondary oxidation of molten steel, avoids the formation of inclusions during casting, and improves the quality of casting products.

[0015] 2. The portability of this utility model allows the device to be used conveniently on different castings, achieving a "one-to-many" effect and reducing the production costs of enterprises.

[0016] 3. The protective casting component of this utility model can achieve splash-proof casting, avoid harm to the personal safety of operators, save the ground cleaning operation, and is safe and reliable.

[0017] 4. This utility model uses argon or helium inert gas casting, which can significantly improve the overall quality of castings, including reducing defects such as oxide scale and porosity, and improving the dimensional accuracy and mechanical properties of castings. Although the use of inert gas will increase the initial investment cost to some extent, in the long run, the production cost can be significantly reduced due to the improvement in casting quality and the reduction in scrap rate. Inert gas casting technology is applicable to the casting process of a variety of metals and alloys, including high-melting-point metals such as stainless steel and titanium alloys, which broadens the application range of casting technology and provides possibilities for metal processing in more fields.

[0018] 5. This utility model uses a flatbed cart for displacement, which has strong load-bearing capacity, good stability, convenient operation, strong adaptability, environmental protection and energy saving, mature and reliable technology, and is easy to implement.

[0019] 6. This utility model achieves precise docking with the ladle through a steel ladle docking shell, ensuring stability and safety during the casting process, helping to reduce leakage and overflow, and improving casting efficiency. The sealing ring forms a reliable sealing structure, effectively preventing leakage of the casting liquid, ensuring a clean casting environment and casting quality. The protective casting cylinder and the sealing ring form a closed protective space, reducing contact between molten steel and air, preventing secondary oxidation and inclusions. After ventilation, a protective atmosphere is formed, enhancing the casting protection effect and improving casting quality. The reduced diameter of the casting channel at the casting inlet increases the casting pressure and speed, ensuring casting accuracy. The protective casting cylinder provides splash protection, reducing molten steel splashing, protecting personnel and equipment safety, and reducing on-site cleaning work. It effectively improves casting efficiency, reduces production costs, and increases production benefits.

[0020] 7. The steel ladle drain of this utility model is fixed to the casting port of the cylinder through a conical structure, which can enhance the connection stability, optimize the casting flow channel, facilitate installation and maintenance, improve equipment durability, and help ensure the smooth progress of the casting process and the efficient and stable operation of the equipment. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present utility model;

[0022] Figure 2 This is a structural diagram of the present utility model;

[0023] Figure 3 This is a flowchart of the method related to this utility model;

[0024] In the diagram: 1-Mobile trolley, 2-Protective gas cylinder, 3-Robotic arm, 3-1 Rotation mechanism, 3-2 Pitch adjustment mechanism, 4-Protective casting assembly, 401-Ladle docking shell, 4011-Ladle drain, 402-Sealing ring, 403-Protective casting cylinder, 4031-Cylinder casting port, 5-Gas pipe assembly, 6-Mold, 601-Mold inlet. Detailed Implementation

[0025] The following will refer to the appendix in the embodiments of this utility model. Figure 1-3 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] A mobile trolley casting device, (e.g.) Figure 1As shown, there is a mobile trolley 1, which is equipped with a protective gas tank 2 and a robotic arm 3. The robotic arm 3 has a protective casting component 4 at its end. The protective gas tank 2 is connected to the protective casting component 4 through a gas pipe assembly 5 to provide protective gas for casting. The protective casting component 4 is used for splash-proof and precise casting.

[0027] The working principle of this utility model is as follows: By controlling the movement of the mobile trolley 1, the entire device can be moved between different molds 6, thus achieving cost savings; by adjusting the robotic arm 3, the protective casting component 4 can be installed and disassembled on the ladle outlet and the mold 6, allowing the device to be flexibly and conveniently applied to different ladle molds 6; by purging protective gas before casting, the molten steel is protected during casting, preventing secondary oxidation and inclusions, thus improving casting quality; because the ladle is encased by the protective casting component 4 during casting, there will be no molten steel splashing, which provides good protection for the safety of the operators, while eliminating the need for ground cleaning, making it safe, clean, and reliable.

[0028] In the above embodiments, furthermore, the protective gas cylinder 2 is filled with an inert gas. The inert gas referred to herein includes, but is not limited to, argon, helium, neon, krypton, and xenon. Using an inert gas to protect the casting process prevents reaction with the components in the molten steel, thus avoiding any impact on the steel's properties. This allows an inert gas protective chamber to be formed between the ladle outlet 4011 and the inner cavity of the protective casting cylinder 403, effectively preventing air from contacting the molten steel, avoiding secondary oxidation of the steel, ensuring smooth casting, reducing inclusions in the steel, and improving the quality of the molten steel.

[0029] In the above embodiments, preferably, the inert gas is argon or helium.

[0030] It should be noted that when using argon, an inert gas, it does not readily react chemically with other substances. During the casting process, it effectively isolates the molten metal from air, preventing reactions between the molten metal and oxygen and nitrogen in the air. This avoids harmful reactions such as oxidation and nitriding, helping to maintain the purity of the metal and improving the quality and performance of the casting. Through atmospheric protection, argon can reduce the oxide layer on the surface of the casting, making the surface smoother and flatter, thus improving the appearance quality and market competitiveness of the casting. The use of argon can also reduce pollution and emissions during the smelting process, making it more environmentally friendly. Argon can also be used to stir molten steel, maintaining a constant temperature and composition, thereby improving smelting efficiency and quality.

[0031] When using helium, its excellent thermal conductivity allows for rapid heat transfer from the casting to the surrounding environment, facilitating rapid cooling and solidification, reducing defects, and improving overall casting quality. Helium's extremely low density, approximately one-seventh that of air, allows it to more easily penetrate the tiny pores of the casting during the casting process, aiding in the removal of gases and impurities.

[0032] Therefore, using inert gas casting can significantly improve the overall quality of castings, including reducing defects such as oxide scale and porosity, and improving the dimensional accuracy and mechanical properties of the castings. Although the use of inert gas increases initial investment costs, in the long run, the improved casting quality and reduced scrap rate can significantly reduce production costs. Inert gas casting technology is suitable for casting processes of various metals and alloys, including high-melting-point metals such as stainless steel and titanium alloys. This broadens the application range of casting technology and opens up possibilities for metal processing in more fields.

[0033] In the above embodiments, preferably, the mobile trolley 1 is a flatbed trolley. Flatbed trolleys are typically designed with a large load-bearing capacity, thanks to their robust frame structure and high-quality material selection. During the casting process, castings that need to be moved and positioned are often heavy; therefore, the high load-bearing capacity of the flatbed trolley can meet this requirement, ensuring the smooth progress of the casting operation. The flatbed trolley has a stable structure and a low center of gravity, making it less prone to tipping or overturning. During the casting operation, the stable mobile trolley ensures the safety of the castings during transport, avoiding damage or accidents caused by shaking or tilting. The flatbed trolley's design is usually simple and straightforward, easy to operate, allowing operators to easily control the movement and positioning of the trolley, improving work efficiency. At the same time, the maintenance of the flatbed trolley is relatively simple, reducing operating costs. Flatbed trolleys are suitable for various casting scenarios and casting types, whether small or large, simple or complex in shape, providing stable handling and positioning services. Furthermore, flatbed trolleys can be customized according to actual needs to meet specific casting operation requirements. Flatbed trolleys typically use environmentally friendly drive methods such as electric motors, reducing emissions and pollution. Meanwhile, due to its efficient handling and positioning capabilities, it can shorten the casting cycle and save energy and costs. Flatbed trucks, as a common transportation tool, have mature and reliable technology. Using flatbed trucks as mobile trolleys in casting operations can ensure smooth operation and reduce the risk of production interruptions due to equipment failure.

[0034] In the above embodiments, the robotic arm 3 further includes a rotation mechanism 3-1 and a pitch adjustment mechanism 3-2. This utility model uses the robotic arm 3 to achieve rotation and pitch adjustment functions. It features a simple structure, flexible operation, high precision, strong applicability, easy maintenance, and convenient upgrades. The rotation mechanism 3-1 and the pitch adjustment mechanism 3-2 can be controlled by motors or other means to achieve horizontal rotation and vertical swing adjustment functions. The entire robotic arm 3 is robust and durable, capable of withstanding heavy loads and harsh working environments.

[0035] Specifically, the rotating mechanism 3-1 consists of a drive motor, a reducer, a rotating shaft, a rotating bearing, a rotating disk, and an encoder. The drive motor drives the rotating shaft to rotate after being reduced in speed by the reducer, and the rotation of the rotating shaft is supported by the bearing. The rotating shaft is the central axis of the robotic arm's rotational movement; it bears all the loads during the robotic arm's rotation. The design of the rotating shaft typically needs to consider factors such as its material, diameter, and strength. It is integrated with the rotating disk to bear all the loads. The encoder is used to detect the rotation angle and speed of the rotating mechanism to achieve precise control.

[0036] Specifically, the pitch adjustment mechanism 3-2 consists of a drive device, a transmission device, and a control device. The drive device can be a geared motor, a hydraulic system, or a pneumatic system. The transmission device is responsible for converting the power of the drive device into the force and torque required for the pitch movement. Specifically, the transmission device can be a linkage mechanism composed of a boom assembly and a forearm assembly; a lead screw and nut mechanism or a linear displacement mechanism composed of a cylinder or hydraulic cylinder provides the driving force for the pitch adjustment of the linkage mechanism; a gear transmission mechanism realizes the rotational hinge between the boom and forearm, etc. The control device is used to monitor and control the motion state of the pitch adjustment structure. Specifically, it can obtain the pitch angle of the robotic arm through sensors, such as angle sensors, and control it according to the set value and feedback signal to make the robotic arm reach the predetermined precise pitch angle.

[0037] In the above embodiments, further: (e.g.) Figure 2 As shown, the protective casting assembly 4 consists of a ladle docking shell 401, a sealing ring 402, and a protective casting cylinder 403, which are connected as a single unit from top to bottom. In use, the ladle docking shell 401 is used to dock with the ladle outlet, the sealing ring 402 is used for sealing the connection, and the protective casting cylinder 403 serves two purposes: firstly, to form a protective gas chamber, and secondly, to provide splash protection.

[0038] In the above embodiments, preferably, the ladle docking shell 401 and the protective casting cylinder 403 are made of high-temperature resistant alloy steel plate.

[0039] This high-temperature resistant alloy steel plate possesses excellent heat resistance, enabling long-term stable operation in high-temperature environments. Examples include austenitic stainless steel, ferritic stainless steel, and nickel-based alloys. High-temperature resistant alloy steel plates maintain high strength and stability at high temperatures, resisting softening, deformation, or breakage. This is attributed to their special alloy composition and heat treatment process, allowing the steel plate to retain excellent mechanical properties even at high temperatures. In high-temperature environments, oxides easily form on the surface of steel plates. However, by adding antioxidant elements such as chromium, high-temperature resistant alloy steel plates can form a dense oxide film at high temperatures, effectively preventing further oxidation. This not only protects the steel matrix but also extends the service life of the equipment. High-temperature resistant alloy steel plates typically contain high levels of elements such as chromium and nickel, which endow the steel plate with excellent corrosion resistance, maintaining its original performance even after prolonged operation in corrosive media containing sulfur and chlorine. In addition to its special alloy composition and microstructure, high-temperature resistant alloy steel plates also possess good machinability and weldability, meeting the manufacturing requirements of complex components. High-temperature resistant alloy steel plates, through reasonable alloy design and heat treatment processes, can maintain stable performance under prolonged high temperatures, ensuring long-term stable operation of equipment and reducing maintenance costs.

[0040] In the above embodiments, further: (in conjunction with) Figure 2 The ladle docking shell 401 is connected to the ladle; the bottom center of the ladle docking shell 401 is provided with a ladle drain outlet 4011, and a sealing ring 402 is provided between the ladle drain outlet 4011 and the ladle docking shell 401; the lower end of the sealing ring 402 is sealed and connected to the protective casting cylinder 403; the protective casting cylinder 403 is connected to the protective gas cylinder 2; the protective casting cylinder 403 is also used for splash protection during casting; the protective casting cylinder 403 is provided with a cylinder casting port 4031, which is concentrically fixed to the bottom end of the ladle drain outlet 4011, and the cylinder casting port 4031 is used to reduce the diameter of the casting channel and to align with the casting inlet 601 of the mold 6.

[0041] It should be noted that the ladle docking shell 401 achieves precise docking with the ladle, ensuring stability and safety during the casting process. This precise docking helps reduce leakage and overflow during casting, improving casting efficiency. A sealing ring 402 is installed between the ladle outlet 4011 and the ladle docking shell 401, forming a reliable sealing structure. The use of the sealing ring 402 effectively prevents liquid leakage during casting, ensuring a clean casting environment and casting quality. The protective casting cylinder 403 is sealed to the lower end of the sealing ring 402, forming a closed protective space. This protective space helps reduce the contact between molten steel and air during casting, preventing secondary oxidation of the molten steel and the formation of inclusions. The protective casting cylinder 403 is connected to the protective gas cylinder 2, allowing the introduction of protective gas (such as argon) to form a protective atmosphere. The introduction of protective gas further enhances the protective effect during casting, improving casting quality. The casting inlet 4031 is concentrically fixed to the bottom of the ladle outlet 4011, and is used to reduce the diameter of the casting flow channel. Reducing the diameter of the casting flow channel helps increase casting pressure and improve casting speed. Simultaneously, aligning with the mold inlet 601 ensures the accuracy of the casting process. The protective casting cylinder 403 also serves as a splash protector, reducing molten steel splashing during the casting process. The splash protection design helps protect the safety of operators and casting equipment, while also reducing cleanup work at the casting site. Through the above-mentioned precision docking, sealing design, protective casting technology, and splash protection measures, casting efficiency is effectively improved. This improved casting efficiency helps reduce production costs and increase production benefits.

[0042] In the above embodiments, the ladle drain 4011 is further connected to the cylinder casting port 4031 by a conical structure.

[0043] It should be noted that the conical structure design allows for a tight transition and fit between the ladle's outlet 4011 and the cylinder's casting inlet 4031. This fit not only increases the contact area but also improves connection stability, making loosening or leakage less likely during casting. The conical structure's fixation allows the connection to withstand greater impact forces. During casting, the high-speed flow of molten steel may impact the outlet and casting inlet; the conical structure effectively disperses these impact forces, protecting the connection from damage. The conical transition design makes the casting channel smoother and reduces flow resistance. This helps improve the casting speed and efficiency, ensuring the molten steel flows smoothly into the mold. The conical structure's fixation ensures precise alignment between the cylinder's casting inlet 4031 and the mold inlet. This precise alignment helps reduce deviations and errors during casting, improving casting accuracy and consistency. The conical structure's fixation also simplifies and speeds up the installation process. Operators can more easily connect and secure the ladle drain 4011 to the cylinder casting port 4031, saving installation time and costs. The conical structure design also facilitates subsequent maintenance and replacement. When the drain or casting port needs to be replaced, operators can more easily disassemble and replace the relevant components, ensuring the continuous and stable operation of the equipment. The conical connection method enhances the strength of the connection. This increased strength helps resist the effects of harsh environments such as high temperature, high pressure, and corrosion during the casting process, thus extending the service life of the equipment. Because the conical structure design improves the stability and durability of the connection, downtime and maintenance costs due to connection failures can be reduced. This contributes to improving the overall reliability and production efficiency of the equipment.

[0044] In the above embodiments, preferably, the sealing ring 402 is a refractory material sealing ring. The refractory material can be asbestos, or other refractory materials can be used to achieve the same purpose.

[0045] It should be noted that when asbestos is preferred, its excellent high-temperature resistance allows it to maintain stable physical and chemical properties under high-temperature environments. This enables the asbestos sealing ring to withstand the high temperatures of molten steel during ladle casting, preventing seal failure due to heat transfer. Asbestos is soft and elastic, easily compressed to achieve a seal, ensuring a tight connection between the asbestos sealing ring and the ladle shell and protective casting cylinder, effectively preventing media leakage. Asbestos also has high wear and corrosion resistance, resulting in a long service life for the asbestos sealing ring, reducing the frequency of seal replacement and lowering maintenance costs.

[0046] (like Figure 3 (As shown) A method for using a movable trolley casting device according to this utility model includes the following steps:

[0047] Step S1, Displacement: Manipulate the moving trolley 1 to move to the designated position of the mold 6 to be cast.

[0048] Step S2, Adjustment: Adjust the robotic arm 3 so that the protective casting component 4 is aligned with the mold 6 and the mold inlet 601.

[0049] Step S3, Casting Preparation: The overhead crane lifts the displacement ladle and aligns it with the ladle docking shell 401. While pressing down on the ladle, the ladle drain port 4011 is inserted into the upper port of the protective casting cylinder 403.

[0050] Step S4, Ventilation: Open the valve of the protective gas cylinder 2, and the protective gas is delivered from the protective gas cylinder 2 on the moving trolley 1 through the air outlet of the air pipe assembly 5 to the inner chamber of the protective casting cylinder 403 until the air is exhausted.

[0051] Step S5, Casting: Open the ladle valve and allow the molten steel to be injected into the mold 6 through the ladle docking shell 401 and the protective casting cylinder 403 under the protection of the protective atmosphere to complete the casting.

[0052] Step S6, Closure: Close the ladle valve, lift and remove the ladle using the crane, and operate the robotic arm 3 to remove the protective casting assembly 4.

[0053] Step S7, Displace again: Maneuver the moving trolley 1 to the designated position of the next mold to be cast 6 and wait.

[0054] Step S8: Repeat steps S2 to S6 to complete the casting of the next mold 6, and repeat this process to complete continuous casting.

[0055] As can be seen from the above description, this utility model introduces a protective gas during casting, reduces secondary oxidation of molten steel, avoids the formation of inclusions during molten steel casting, and improves the quality of casting products.

[0056] The mobility of the mobile trolley 1 of this utility model allows the device to be used on different castings, achieving a "one-to-many" effect and reducing the production cost of enterprises.

[0057] The protective casting component 4 of this utility model can achieve splash-proof casting, avoiding harm to the personal safety of operators, and is safe and reliable.

[0058] This invention employs argon or helium inert gas casting, which can significantly improve the overall quality of castings, including reducing defects such as oxide scale and porosity, and improving the dimensional accuracy and mechanical properties of castings. Although the use of inert gas increases initial investment costs, in the long run, the improved casting quality and reduced scrap rate can significantly reduce production costs. Inert gas casting technology is applicable to the casting process of various metals and alloys, including high-melting-point metals such as stainless steel and titanium alloys, broadening the application scope of casting technology and providing possibilities for metal processing in more fields.

[0059] This utility model uses a flatbed cart for displacement, which has strong load-bearing capacity, good stability, convenient operation, strong adaptability, environmental protection and energy saving, mature and reliable technology, and is easy to implement.

[0060] This invention achieves precise docking with the ladle through the ladle docking shell 401, ensuring stability and safety during the casting process, helping to reduce leakage and overflow, and improving casting efficiency. The sealing ring forms a reliable sealing structure, effectively preventing leakage of the casting liquid, ensuring a clean casting environment and casting quality. The protective casting cylinder 403 and the sealing ring 402 form a closed protective space, reducing contact between molten steel and air, preventing secondary oxidation and inclusions. After ventilation, a protective atmosphere is formed, enhancing the casting protection effect and improving casting quality. The cylinder casting port 4031 reduces the diameter of the casting flow channel, increases the casting pressure, improves the casting speed, and ensures casting accuracy. The protective casting cylinder 403 provides splash protection, reducing molten steel splashing, protecting personnel and equipment safety, and reducing on-site cleaning work. It effectively improves casting efficiency, reduces production costs, and increases production benefits.

[0061] The ladle drain 4011 of this utility model is fixed to the casting port 4031 of the cylinder through a conical structure, which can enhance the connection stability, optimize the casting flow channel, facilitate installation and maintenance, improve equipment durability, and help ensure the smooth progress of the casting process and the efficient and stable operation of the equipment.

[0062] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0063] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. Any modifications and equivalent substitutions made within the spirit and principles of the present utility model are included within the scope of protection of the present utility model.

Claims

1. A mobile trolley casting apparatus, characterised in that: The utility model provides a mobile trolley (1) is equipped with a protective gas tank (2) and a mechanical arm (3), the mechanical arm (3) is provided with a protective casting assembly (4) at the end, the protective gas tank (2) is connected with the protective casting assembly (4) through a gas pipe assembly (5) to provide protective gas for casting, and the protective casting assembly (4) is used for splash-proof precision casting.

2. The mobile trolley casting apparatus of claim 1, wherein: The protective gas tank (2) is filled with inert gas.

3. The mobile trolley casting apparatus of claim 2, wherein: The inert gas is argon or helium.

4. The mobile trolley casting apparatus of claim 1, wherein: The mobile trolley (1) is a flat car.

5. The mobile trolley casting apparatus of claim 1, wherein: The mechanical arm (3) comprises a rotating mechanism (3-1) and a pitch adjusting mechanism (3-2).

6. The mobile trolley casting apparatus of claim 1, wherein: The protective casting assembly (4) is composed of a ladle butt shell (401), a sealing ring (402) and a protective casting cylinder (403) which are connected in sequence.

7. The mobile trolley casting apparatus of claim 6, wherein: The ladle butt shell (401) is connected with a ladle, the ladle butt shell (401) is provided with a ladle downspout (4011) at the bottom center, the ladle downspout (4011) is provided with a sealing ring (402) between the ladle butt shell (401), the sealing ring (402) is connected with a protective casting cylinder (403) at the lower end, the protective casting cylinder (403) is connected with the protective gas tank (2), the protective casting cylinder (403) is also used for splash-proof protection during casting, the protective casting cylinder (403) is provided with a cylinder casting port (4031) at the bottom, the cylinder casting port (4031) is concentrically connected with the ladle downspout (4011), and the cylinder casting port (4031) is used for reducing the diameter of a casting runner and aligning a mold inlet (601) of a mold (6).

8. The mobile trolley casting apparatus of claim 7, wherein: The ladle downspout (4011) is connected with the cylinder casting port (4031) through a conical structure.

9. The mobile trolley casting apparatus of claim 6 or 7, wherein: The sealing ring (402) is a refractory sealing ring.

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