Gantry bottom pouring type pouring machine capable of grabbing multi-specification pouring ladles

Abstract

The invention relates to a gantry bottom pouring type pouring machine capable of grabbing multi-specification pouring ladles, and relates to the field of pouring machines. According to the technical scheme, through cooperative work of the integrated transverse moving trolley, the longitudinal moving trolley and the lifting mechanism and the rotary ladle grabbing mechanism provided with the rotary assembly, the opening and closing assembly and the casting ladle supporting and grabbing assembly, accurate positioning and stable grabbing of casting ladles of different sizes and weights are achieved. Under the condition, not only are the flexibility and the universality of the equipment improved, but also the safety and the efficiency of operation are greatly enhanced; according to the method, the equipment purchasing types and quantity of enterprises can be remarkably reduced, the operation cost is reduced, the flexibility and response speed of a production line can be greatly improved, and the method better adapts to the development trend of pursuing high efficiency and intelligence in the modern manufacturing industry. Therefore, research and implementation of the multifunctional casting machine are of great significance in promoting the technical progress of the whole casting industry.

Description

Technical Field

[0001] The invention relates to the technical field of pouring machines, in particular to a gantry bottom pouring machine for grabbing ladles of multiple specifications. Background Art

[0002] In the existing foundry industry, pouring machines, as an indispensable part of the automated production line, undertake the key task of accurately injecting molten metal into the mold. Traditional gantry bottom pouring machines are usually designed to adapt to only a single specification of ladles, which greatly limits their application flexibility. When faced with ladles of different sizes or capacities, companies often need to purchase multiple different models of equipment to meet diverse production needs, which not only increases capital investment and maintenance costs, but also takes up more plant space.

[0003] Therefore, as the market's requirements for product customization and rapid response capabilities continue to increase, the lack of a solution that can flexibly grasp and handle ladles of various specifications in the existing technology has become a major bottleneck restricting the improvement of industry efficiency. In view of this situation, it is particularly urgent to develop a gantry bottom pouring machine with multi-specification compatibility. Summary of the invention

[0004] The purpose of the present invention is to provide a gantry bottom pouring type pouring machine for grabbing ladles of various specifications, so as to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A gantry bottom pouring machine for grabbing ladles of multiple specifications, comprising: A transverse transfer vehicle movably connected to the longitudinal transfer vehicle; A lifting mechanism, which is liftably connected to the transverse transfer vehicle; and A rotary bag grabbing mechanism, comprising a rotary assembly connected to the lifting mechanism, an opening and closing assembly connected to the rotary end of the rotary assembly, and a ladle holding and grabbing assembly connected to the opening and closing end of the opening and closing assembly; When it is necessary to grab the ladle, the rotary ladle grabbing mechanism is moved to a position corresponding to the ladle through the coordinated movement of the longitudinal transfer vehicle, the transverse transfer vehicle and the lifting mechanism, and the ladle is grabbed by the grabbing end of the ladle holding assembly through the rotating assembly and the opening and closing assembly.

[0006] In a possible implementation, the lifting mechanism includes: A lifting guide rail, which is installed on the transverse moving vehicle in a direction perpendicular to the horizontal plane; an electric push rod installed on one side of the lifting guide rail; and A lifting frame is connected to the lifting end of the electric push rod and is connected to the lifting guide rail through a safety guide block.

[0007] In a possible implementation, a cross roller guide wheel is further provided between the bottom end of the lifting frame and the lifting guide rail.

[0008] In a possible implementation, the slewing assembly includes: A slewing bearing, the inner ring of which is fixedly mounted on the bottom of the lifting frame, and the bottom of the outer gear ring of which is connected to the opening and closing assembly; and The transmission gear on the power output end of the slewing reducer is meshed with the outer gear ring of the slewing bearing, and is used to drive the outer gear ring of the slewing bearing to rotate when the slewing reducer is driven by the motor.

[0009] In a possible implementation, the opening and closing assembly includes: An opening and closing guide frame, which is connected to the outer gear ring of the slewing bearing and has an opening and closing guide rail on its inner side, and both the two holding arms of the ladle holding assembly are rollingly connected to the opening and closing guide rail through an opening and closing guide wheel; and The gear rack driving unit is used to drive the two holding arms of the ladle holding assembly to perform opening and closing movements along the opening and closing guide rails.

[0010] In one possible implementation, the rack and pinion drive unit includes: a first rack and a second rack respectively mounted on two supporting arms of the ladle supporting assembly, the tooth surfaces of the first rack and the second rack being arranged opposite to each other and meshing with gears, and the gears being transmission-connected to a gear reducer mounted on the opening and closing guide frame.

[0011] In a possible implementation, the two supporting arms have weighing sensors on their supporting ends, and the weighing sensors are provided with supporting plates, which are matched with the supporting seat of the ladle; The supporting plate is also provided with a positioning column, and the positioning column is connected with the positioning portion of the supporting seat.

[0012] In a possible implementation, a signal transmission part for confirming that the positioning column and the positioning part are properly docked is also installed on the holding ends of the two holding arms.

[0013] In a possible implementation, the signal transmission unit is a travel switch or a photoelectric switch; The positioning portion is one of a regular circular hole, a square hole, an elliptical hole, a diamond hole, and a keyway hole, or the positioning portion is an irregular shaped hole.

[0014] In a possible implementation, a winding reducer is also installed at the bottom of the inner ring of the slewing bearing, and the winding end of the winding reducer is connected to the ladle insulation cover through a chain to achieve the rising and falling of the ladle insulation cover.

[0015] The beneficial effects brought about by the technical solution provided by the present invention include at least: This technical solution aims to achieve accurate positioning and stable grasping of ladles of different sizes and weights by integrating the coordinated work of the transverse transfer vehicle, longitudinal transfer vehicle and lifting mechanism, as well as a rotary bag grabbing mechanism equipped with a rotary component, an opening and closing component and a ladle holding and grasping component. In this case, not only the flexibility and versatility of the equipment are improved, but also the safety and efficiency of operation are greatly enhanced; not only can the types and quantities of equipment purchased by the enterprise be significantly reduced, and the operating costs can be reduced, but also the flexibility and response speed of the production line can be greatly improved, and the development trend of modern manufacturing industry in pursuit of efficiency and intelligence can be better adapted. Therefore, the research and realization of this multifunctional pouring machine is of great significance to promoting technological progress in the entire foundry industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0017] Figure 1 A schematic front view of a gantry bottom pouring machine for grabbing ladles of various specifications provided by an exemplary embodiment of the present invention is shown.

[0018] Figure 2 A schematic side view of a longitudinal transfer vehicle, a transverse transfer vehicle and a partial lifting mechanism of a gantry bottom pouring casting machine for grabbing ladles of various specifications provided by an exemplary embodiment of the present invention is shown.

[0019] Figure 3 A schematic structural diagram of a lifting mechanism of a gantry bottom pouring casting machine for grabbing ladles of various specifications provided by an exemplary embodiment of the present invention is shown.

[0020] Figure 4 A front schematic diagram of a rotary bag grabbing mechanism of a gantry bottom pouring casting machine for grabbing ladles of various specifications provided by an exemplary embodiment of the present invention is shown.

[0021] Figure 5 A schematic side view of a rotary bag grabbing mechanism of a gantry bottom pouring casting machine for grabbing ladles of various specifications provided by an exemplary embodiment of the present invention is shown.

[0022] Figure 6 Shows Figure 4 A local enlarged schematic diagram of point A.

[0023] Figure 7A schematic structural diagram of a rack and pinion drive unit of a gantry bottom pouring casting machine for grabbing ladles of various specifications provided by an exemplary embodiment of the present invention is shown.

[0024] In the figure: 1. Longitudinal transfer vehicle; 2. Horizontal transfer vehicle; 3. Lifting mechanism; 4. Rotary bag grabbing mechanism; 5. Pouring ladle; 6. Winding reducer; 7. Chain; 8. Pouring ladle insulation cover; 31. Lifting rail; 32. Electric push rod; 33. Lifting frame; 34. Safety guide block; 35. Cross roller guide wheel; 41. Rotating assembly; 42. Opening and closing assembly; 43. Ladle holding assembly; 51. Support seat; 411, slewing bearing; 412, slewing reducer; 421, opening and closing guide frame; 422, opening and closing guide rail; 423, opening and closing guide wheel; 424, gear rack drive unit; 431, supporting arm; 432, weighing sensor; 433, supporting plate; 434, positioning column; 435, signal transmission unit; 4241. First rack; 4242. Second rack; 4243. Gear; 4244. Gear reducer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Among them, the same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings of the specification of the present invention, and the words "bottom surface" and "top surface", "inside" and "outside" refer to the direction towards or away from a specific component, respectively. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the specification of the present invention, the meaning of "multiple" is two or more.

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figure 1A front schematic diagram of a gantry bottom pouring casting machine for grabbing ladles of various specifications provided by an exemplary embodiment of the present invention is shown, wherein the gantry bottom pouring casting machine for grabbing ladles of various specifications comprises: a transverse transport vehicle 2, a lifting mechanism 3, and a rotary bag grabbing mechanism 4, wherein the transverse transport vehicle 2 is movably connected to the longitudinal transport vehicle 1; the lifting mechanism 3 is liftably connected to the transverse transport vehicle 2; the rotary bag grabbing mechanism 4 comprises a rotary component 41 connected to the lifting mechanism 3, an opening and closing component 42 connected to the rotary end of the rotary component 41, and a ladle holding and grasping component 43 connected to the opening and closing end of the opening and closing component 42; wherein, when it is necessary to grasp the ladle 5, the rotary bag grabbing mechanism 4 is moved to a position corresponding to the ladle 5 through the coordinated movement of the longitudinal transport vehicle 1, the transverse transport vehicle 2 and the lifting mechanism 3, and the ladle 5 is held by the holding end of the ladle holding and grasping component 43 through the rotary component 41 and the opening and closing component 42.

[0029] In the embodiment of the present application, the gantry bottom pouring machine for grabbing ladles of multiple specifications is intended to achieve efficient and accurate grabbing and operation of ladles 5 of different sizes and weights. Specifically, the longitudinal transfer vehicle 1 is located on the track of the pouring line and can move long distances along the pouring line through the running wheels, providing the ability to move longitudinally along the fixed track; while the transverse transfer vehicle 2 can move transversely on the transverse track on the longitudinal transfer vehicle 1 through the running wheels. The combination of the two ensures that the equipment can be positioned arbitrarily on the horizontal plane (the running wheels are connected to the running wheel reducer). The lifting mechanism 3 is installed on the transverse transfer vehicle 2 and is responsible for the height adjustment in the vertical direction, so that the entire system can reach the required height to approach the target ladle 5. The rotary ladle grabbing mechanism 4 is the execution end of this system, which consists of three parts: first, the rotary component 41 is connected to the lifting mechanism 3, allowing the ladle holding component 43 to rotate around a central axis to accommodate the ladle 5 placed at different angles; secondly, the opening and closing component 42 is connected to the rotary end of the rotary component 41, controlling the movement of the ladle holding component 43 to ensure that it can be flexibly opened or closed; finally, the ladle holding component 43 directly acts on the ladle 5, and completes the safe lifting of the ladle 5 through precise operation.

[0030] Further, Figure 2 A schematic side view of a longitudinal transfer vehicle, a transverse transfer vehicle and a partial lifting mechanism of a gantry bottom pouring casting machine for grabbing ladles of various specifications provided by an exemplary embodiment of the present invention is shown. Figure 3The schematic diagram of the structure of the lifting mechanism of the gantry bottom pouring pouring machine for grabbing multiple specifications of ladles provided by an exemplary embodiment of the present invention is shown. The lifting mechanism 3 includes: a lifting rail 31, an electric push rod 32, and a lifting frame 33. The lifting rail 31 is installed on the transverse transfer vehicle 2 in a direction perpendicular to the horizontal plane; the electric push rod 32 is installed on one side of the lifting rail 31; the lifting frame 33 is connected to the lifting end of the electric push rod 32, and is connected to the lifting rail 31 through a safety guide block 34. Preferably, a cross roller guide wheel 35 is also provided between the bottom end of the lifting frame 33 and the lifting rail 31.

[0031] In the embodiment of the present application, the design of the lifting mechanism 3 is intended to ensure that the rotary bag grabbing mechanism 4 can move smoothly and accurately in the vertical direction to meet the requirements of grabbing ladles 5 of different heights. Specifically, the lifting guide rail 31 is installed on the transverse vehicle 2 in a direction perpendicular to the horizontal plane, providing a stable guide path for the entire lifting process, ensuring the consistency and accuracy of the lifting action. The electric push rod 32, as a power source, is installed on one side of the lifting guide rail 31, and drives the lifting frame 33 to move up and down along the guide rail through its telescopic movement. This arrangement not only saves space, but also effectively transmits power to ensure smooth lifting action. The lifting frame 33 is connected to the lifting end of the electric push rod 32, and is connected to the lifting guide rail 31 through a safety guide block 34. The role of the safety guide block 34 is to provide additional safety protection during the lifting process to prevent the lifting frame 33 from being separated from the guide rail due to unexpected circumstances, thereby avoiding possible accidents. In addition, in the preferred design, a cross-roller guide wheel 35 is provided between the bottom end of the lifting frame 33 and the lifting guide rail 31, which further enhances the stability and precision of the system. The cross-roller guide wheel 35 can reduce the friction resistance during the lifting process, while ensuring that the lifting frame 33 always maintains the correct posture, and can maintain good straightness and stability even under high speed or heavy load conditions.

[0032] Furthermore, Figure 4 A schematic front view of a rotary bag grabbing mechanism of a gantry bottom pouring casting machine for grabbing ladles of various specifications provided by an exemplary embodiment of the present invention is shown. Figure 5A side schematic diagram of a rotary bag grabbing mechanism of a gantry bottom pouring casting machine for grabbing ladles of various specifications provided by an exemplary embodiment of the present invention is shown, wherein the rotary assembly 41 comprises: a rotary bearing 411, and a rotary reducer 412, wherein the inner ring of the rotary bearing 411 is fixedly mounted on the bottom of the lifting frame 33, and the bottom of the outer gear ring of the rotary bearing 411 is connected to the opening and closing assembly 42; the rotary reducer 412 is fixedly mounted on the lifting frame 33, and the transmission gear on the power output end of the rotary reducer 412 is meshed with the outer gear ring of the rotary bearing 411, and is used to drive the outer gear ring of the rotary bearing 411 to rotate when the rotary reducer 412 is driven by a motor (as a prior art, there is a ball between the inner ring and the outer gear ring of the rotary bearing 411 to enable the two to rotate relative to each other). The opening and closing assembly 42 includes: an opening and closing guide frame 421, and a gear rack driving unit 424. The opening and closing guide frame 421 is connected to the bottom of the outer gear ring of the slewing bearing 411. The inner side of the opening and closing guide frame 421 has an opening and closing guide rail 422. The two supporting arms 431 of the ladle holding assembly 43 are both rollingly connected to the opening and closing guide rail 422 through the opening and closing guide wheel 423; the gear rack driving unit 424 is used to drive the two supporting arms 431 of the ladle holding assembly 43 to perform opening and closing movements along the opening and closing guide rail 422.

[0033] In the embodiment of the present application, the design of the slewing assembly 41 is intended to enable the ladle holding assembly 43 to accurately and stably grasp the ladle 5 placed at different angles. Specifically, the inner ring of the slewing bearing 411 is mounted on the lifting frame 33 to ensure that its position in the vertical direction is fixed, and the bottom of the outer gear ring is connected to the opening and closing assembly 42, so that the outer gear ring can drive the opening and closing assembly 42 to rotate freely in the horizontal plane to adapt to different orientations of the ladle 5. The slewing reducer 412 is connected to the outer gear ring of the slewing bearing 411 in a transmission manner, and drives the outer gear ring of the slewing bearing 411 to rotate relative to the fixed inner ring by providing power, thereby adjusting the angle of the ladle holding assembly 43 to ensure that the target ladle 5 can be accurately aligned. The opening and closing guide frame 421 in the opening and closing assembly 42 is connected to the bottom of the outer gear ring of the slewing bearing 411, providing structural support for subsequent opening and closing actions. An opening and closing guide rail 422 is provided inside the opening and closing guide frame 421. The two holding arms 431 of the ladle holding assembly 43 are rollingly connected to the opening and closing guide rail 422 through their respective opening and closing guide wheels 423. This design not only reduces the friction, but also ensures that the holding arms 431 can move smoothly along the predetermined path during the opening and closing process. The gear rack drive unit 424 is a key component for driving the two holding arms 431 to open and close along the opening and closing guide rail 422. It can control the opening and closing degree of the holding arms 431 according to actual needs to ensure that the ladle holding assembly 43 can firmly grasp or release the ladle 5.

[0034] Specifically, Figure 4A schematic front view of a rotary bag grabbing mechanism of a gantry bottom pouring casting machine for grabbing ladles of various specifications provided by an exemplary embodiment of the present invention is shown. Figure 6 Shows Figure 4 The partial enlarged schematic diagram of A of the two supporting arms 431 shows that the supporting ends of the two supporting arms 431 are provided with a weighing sensor 432, and the weighing sensor 432 is provided with a supporting plate 433, which is adapted to the supporting seat 51 of the ladle 5; the supporting plate 433 is also provided with a positioning column 434, and the positioning column 434 is connected to the positioning part of the supporting seat 51. The supporting ends of the two supporting arms 431 are also equipped with a signal transmission part 435 for confirming that the positioning column 434 and the positioning part are properly connected. Optionally, the signal transmission part 435 is a travel switch or a photoelectric switch; the positioning part is one of a regular circular hole, a square hole, an elliptical hole, a diamond hole, and a key slot hole, or the positioning part is an irregular special-shaped hole.

[0035] In the embodiment of the present application, in order to ensure that the ladle 5 is safely and accurately grasped and loaded, the grasping end of each grasping arm 431 is equipped with a weighing sensor 432 for accurately measuring the weight of the ladle 5, ensuring the safety of operation and monitoring the load condition. The grasping plate 433 mounted on the weighing sensor 432 is adapted to the support seat 51 of the ladle 5 to provide a stable support surface. In addition, the positioning column 434 on the grasping plate 433 is docked with the positioning part on the support seat 51, ensuring the correct positioning of the ladle 5 when it is grasped and preventing it from moving unnecessarily during transportation. The signal transmission part 435 (such as a travel switch or a photoelectric switch) is used to confirm whether the positioning column 434 has been correctly docked with the positioning part, thereby providing an automated way to verify the connection state and avoid operational errors caused by incorrect position. The positioning part can be designed as a hole of various shapes, including regular or irregular shaped holes, which increases the flexibility of the system and can be adjusted according to different ladle 5 designs to adapt to a variety of application scenarios.

[0036] More specifically, Figure 7 A schematic structural diagram of a rack and pinion drive unit of a gantry bottom pouring machine for grabbing ladles of various specifications provided by an exemplary embodiment of the present invention is shown, wherein the rack and pinion drive unit 424 comprises: a first rack 4241 and a second rack 4242 respectively mounted on two holding arms 431 of a ladle holding assembly 43, the tooth surfaces of the first rack 4241 and the second rack 4242 being arranged opposite to each other and meshing with a gear 4243, the gear 4243 being transmission-connected to a gear reducer 4244 mounted on an opening and closing guide frame 421.

[0037] In the embodiment of the present application, when the gear reducer 4244 is driven by the motor, the gear 4243 is driven to rotate, thereby driving the first rack 4241 and the second rack 4242 respectively installed on the two holding arms 431 of the ladle holding assembly 43 to perform linear motion. Since the tooth surfaces of the first rack 4241 and the second rack 4242 are arranged opposite to each other and mesh with the gear 4243, when the gear 4243 rotates, it converts the rotational motion into linear motion of the two racks in the opposite or opposite directions, thereby realizing the opening and closing action of the ladle holding assembly 43.

[0038] As a supplement, see Figure 1 A winding reducer 6 is also installed at the bottom of the inner ring of the slewing bearing 411. The winding end of the winding reducer 6 is connected to the ladle insulation cover 8 through a chain 7 to realize the rising and falling of the ladle insulation cover 8.

[0039] In the embodiment of the present application, when the winding reducer 6 is driven by a motor, the ladle insulation cover 8 can be opened or closed by winding or releasing the chain 7, ensuring that the material in the ladle maintains an appropriate temperature during the processing process and providing safe and reliable coverage during operation to prevent accidental splashing or heat loss. This design simplifies the operation process of the ladle insulation cover 8 and improves work efficiency and safety.

[0040] It is worth mentioning that all the reducers in this application are driven by motors.

[0041] Next, the working principle of a gantry bottom pouring machine for grabbing ladles of various specifications involved in an embodiment of the present invention is described.

[0042] First, the longitudinal transfer vehicle 1 moves longitudinally along the fixed track to the approximate position of the target ladle 5; then, the transverse transfer vehicle 2 slides transversely on the longitudinal transfer vehicle 1 and is accurately positioned above the ladle 5; Then, the lifting mechanism 3 is started, and the rotary bag grabbing mechanism 4 is lifted or lowered along the lifting guide rail 31 by the electric push rod 32 to reach an appropriate height; Next, when the rotary reducer 412 in the rotary assembly 41 is driven by the motor, the outer gear ring of the rotary support 411 is driven to rotate, and the angle of the ladle holding assembly 43 is adjusted to align with the ladle 5; Then, the rack and pinion drive unit 424 is activated, and the gear reducer 4244 drives the two holding arms 431 to close along the opening and closing guide rails 422 and firmly hold the ladle 5. At this time, the weighing sensor 432 monitors the load, the positioning column 434 docks with the ladle support seat 51, and the signal transmission unit 435 confirms the docking state; Finally, the winding reducer 6 is driven by the motor to drive the chain 7 to control the opening or closing of the ladle insulation cover 8 to ensure safe operation and maintain the material temperature.

[0043] In the embodiments disclosed in the present invention, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments disclosed in the present invention can be understood according to specific circumstances.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A gantry bottom pouring machine for grabbing ladles of various specifications, characterized in that: include: A transverse transfer vehicle (2) movably connected to the longitudinal transfer vehicle (1); A lifting mechanism (3) connected to the transverse transfer vehicle (2) in a liftable manner; as well as A rotary bag grabbing mechanism (4), comprising a rotary component (41) connected to the lifting mechanism (3), an opening and closing component (42) connected to the rotary end of the rotary component (41), and a ladle holding and grabbing component (43) connected to the opening and closing end of the opening and closing component (42); When it is necessary to grab the ladle (5), the rotary ladle grabbing mechanism (4) is moved to a position corresponding to the ladle (5) through the coordinated movement of the longitudinal transfer vehicle (1), the transverse transfer vehicle (2) and the lifting mechanism (3), and the ladle (5) is grabbed by the gripping end of the ladle gripping component (43) through the rotary component (41) and the opening and closing component (42).

2. The gantry bottom pouring pouring machine for grabbing multiple specifications of ladles according to claim 1, characterized in that: The lifting mechanism (3) comprises: A lifting guide rail (31) mounted on the transverse transfer vehicle (2) in a direction perpendicular to the horizontal plane; An electric push rod (32) installed on one side of the lifting guide rail (31); and A lifting frame (33) is connected to the lifting end of the electric push rod (32) and is connected to the lifting guide rail (31) via a safety guide block (34).

3. The gantry bottom pouring machine for grabbing multiple specifications of ladles according to claim 2, characterized in that: A cross roller guide wheel (35) is also provided between the bottom end of the lifting frame (33) and the lifting guide rail (31).

4. The gantry bottom pouring machine for grabbing multiple specifications of ladles according to claim 2, characterized in that: The rotary assembly (41) comprises: A slewing bearing (411), the inner ring of which is fixedly mounted on the bottom of the lifting frame (33), and the bottom of the outer gear ring of which is connected to the opening and closing assembly (42); and The transmission gear on the power output end of the slewing reducer (412) meshes with the outer gear ring of the slewing support (411), and is used to drive the outer gear ring of the slewing support (411) to rotate when the slewing reducer (412) is driven by the motor.

5. The gantry bottom pouring pouring machine for grabbing ladles of multiple specifications according to claim 4, characterized in that: The opening and closing assembly (42) comprises: an opening and closing guide frame (421) connected to the outer gear ring of the slewing bearing (411), the inner side of which is provided with an opening and closing guide rail (422), and the two holding arms (431) of the ladle holding assembly (43) are both rollingly connected to the opening and closing guide rail (422) via an opening and closing guide wheel (423); and A gear rack driving unit (424) is used to drive the two holding arms (431) of the ladle holding assembly (43) to perform opening and closing movements along the opening and closing guide rail (422).

6. The gantry bottom pouring machine for grabbing ladles of various specifications according to claim 5, characterized in that: The rack and pinion drive unit (424) comprises: a first rack (4241) and a second rack (4242) respectively mounted on two supporting arms (431) of the ladle supporting assembly (43); tooth surfaces of the first rack (4241) and the second rack (4242) are arranged opposite to each other and meshed with a gear (4243); the gear (4243) is transmission-connected to a gear reducer (4244) mounted on the opening and closing guide frame (421).

7. The gantry bottom pouring machine for grabbing ladles of various specifications according to claim 6, characterized in that: The two supporting arms (431) have a weighing sensor (432) on their supporting ends, and a supporting plate (433) is provided on the weighing sensor (432), and the supporting plate (433) is adapted to the supporting seat (51) of the ladle (5); A positioning column (434) is also provided on the supporting plate (433), and the positioning column (434) is connected to the positioning portion of the supporting seat (51).

8. The gantry bottom pouring pouring machine for grabbing ladles of various specifications according to claim 7, characterized in that: A signal transmission part (435) for confirming that the positioning column (434) and the positioning part are properly docked is also installed on the holding ends of the two holding arms (431).

9. The gantry bottom pouring machine for grabbing ladles of various specifications according to claim 7, characterized in that: The signal transmission part (435) is a travel switch or a photoelectric switch; The positioning portion is one of a regular circular hole, a square hole, an elliptical hole, a diamond hole, and a keyway hole, or the positioning portion is an irregular shaped hole.

10. The gantry bottom pouring pouring machine for grabbing ladles of various specifications according to claim 4, characterized in that: A winding reducer (6) is also installed at the bottom of the inner ring of the slewing bearing (411), and the winding end of the winding reducer (6) is connected to the ladle insulation cover (8) through a chain (7) to achieve the rising and falling of the ladle insulation cover (8).

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