Casting and transferring device for alloy steel castings

Abstract

The invention relates to the technical field of AGV conveying, and discloses an alloy steel casting casting transfer device which comprises an AGV conveying vehicle, a carrying plate is fixed to the AGV conveying vehicle, a through opening is formed in the carrying plate, a partition plate is fixed to the middle of the interior of the through opening, and the partition plate divides the through opening into two channels; and two slidable expansion plates are arranged in the through opening, the two expansion plates are located in the two channels correspondingly, and the ends, away from each other, of the two expansion plates both extend to the exterior of the through opening. When the large-size workpiece conveying device is used and the size of a conveyed workpiece is larger than the effective load area of the carrying plate, a worker can start the two air cylinders, the telescopic ends of the air cylinders drive the side plates and the expansion plates to move, the two expansion plates are far away from each other and move out of the through opening, the two expansion plates and the carrying plate jointly form a load area, and stable conveying of the large-size workpiece is achieved; and the applicability of the device is enhanced.

Description

Technical Field

[0001] This invention relates to the field of AGV conveying technology, and in particular to a casting and transfer device for alloy steel castings. Background Technology

[0002] The AGV transfer device for alloy steel casting is an automated logistics equipment based on automatic guidance technology, specifically designed for the transfer of alloy steel castings in the casting workshop. By integrating a navigation system, drive device, transfer mechanism and safety protection system, it realizes unmanned and efficient transportation of castings from the production line to the buffer area or the next process.

[0003] A search revealed that Chinese patent CN114348144A discloses an AGV off-line mechanism and an AGV, including an AGV chassis and a drive assembly adapted to drive the AGV chassis to move; an off-line auxiliary wheel assembly disposed within the AGV chassis, wherein the distance between the off-line auxiliary wheel assembly's end face facing away from the AGV chassis and the AGV chassis is less than the distance between the drive assembly's end face facing away from the AGV chassis; and an auxiliary lifting assembly adapted to push the off-line auxiliary wheel assembly until it moves to contact the ground and causes the drive assembly to detach from the ground, achieving a convenient and labor-saving effect. However, in actual use, this solution still has the following shortcomings: The AGV conveying device proposed in the above scheme has a fixed platform size, and the effective load area cannot be changed. It cannot be flexibly adjusted or expanded according to actual transportation needs. This design means that when encountering workpieces whose size exceeds the range of the platform, the AGV conveying device cannot provide a safe and reliable transportation solution, because the excess part may not be able to be stably supported, or there may be safety hazards such as sliding or tipping during transportation, which will affect the efficiency and safety of the entire logistics process. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the load area of ​​the AGV transport vehicle cannot be adjusted in the prior art. To address this, we propose an alloy steel casting transfer device.

[0005] To achieve the above objectives, this application adopts the following technical solution: an alloy steel casting casting transfer device, including an AGV transport vehicle, a carrier plate fixed on the AGV transport vehicle, a through opening on the carrier plate, a partition plate fixed in the middle of the through opening, the partition plate dividing the through opening into two channels, two slidable extension plates arranged in the through opening, the two extension plates respectively located in the two channels, the ends of the two extension plates extending away from each other extending to the outside of the through opening, a side plate fixed on the side of each extension plate, and two cylinders installed on the AGV transport vehicle facing each other, the telescopic ends of the two cylinders respectively connected to the two side plates.

[0006] Preferably, each of the expansion plates is provided with a plurality of support components and a plurality of adjustment components. Each support component includes a recess and an installation slot. The recess is opened on the top surface of the support plate, and the installation slot is opened on the side of the support plate. The recess and the installation slot are connected by a communication port. A movable plate is slidably arranged in the recess. A fixed plate is fixed on the bottom surface of the movable plate. An inclined surface is provided on the fixed plate. Each of the mounting slots is provided with a limit component.

[0007] Preferably, the several sinks located on the same support plate are arranged in a linear array.

[0008] Preferably, the adjusting assembly includes a slide rod that passes through the communication port and slides within it. One end of the slide rod is located in the recess, and the other end extends into the mounting groove. A push plate is fixed to the end of the slide rod located in the recess, and the push plate is positioned opposite the inclined surface of the fixed plate. A rotating ring is rotatably fitted onto the end of the slide rod located in the mounting groove. The rotating ring is connected to the slide rod by a torsion spring. A protrusion is fixed to the outer circumference of the rotating ring, and a knob is fixed to the side of the rotating ring.

[0009] Preferably, the limiting component includes a first arc-shaped groove, a second arc-shaped groove, and a transverse groove. The first arc-shaped groove, the second arc-shaped groove, and the transverse groove are all formed on the groove wall of the mounting groove. The first arc-shaped groove and the second arc-shaped groove are arranged along the circumferential direction of the mounting groove, and the transverse groove is arranged along the axial direction of the mounting groove. One end of the transverse groove is connected to the first arc-shaped groove, and the other end of the transverse groove is connected to the second arc-shaped groove. The first arc-shaped groove, the second arc-shaped groove, and the transverse groove together form a U-shaped structure.

[0010] Preferably, in the initial state, the protrusion is located at the end of the first arc-shaped groove away from the transverse groove.

[0011] Preferably, the side of the movable plate is in contact with the wall of the settling tank.

[0012] Preferably, the outer circumferential surface of the rotating ring is in contact with the wall of the mounting groove, and the rotating ring, the sliding rod, the mounting groove and the connecting port are arranged coaxially.

[0013] Preferably, two load assemblies are provided inside the through-hole, and the two load assemblies are respectively located on both sides of the partition plate. Each load assembly includes a first support plate, a second support plate, and several third support plates. The first support plate is fixed to the side of the partition plate, the second support plate is fixed to the side of the extension plate, and the several third support plates are located between the first support plate and the second support plate. Each third support plate slides within the through-hole, and adjacent third support plates are connected by connecting ropes. The first support plate is connected to the adjacent third support plate by connecting ropes, and the second support plate is connected to the adjacent third support plate by connecting ropes.

[0014] Preferably, a plurality of limiting strips are fixed on the inner surface of the through opening, and a plurality of limiting openings are provided on both expansion plates, the shape of the limiting openings being adapted to the shape of the limiting strips.

[0015] The technical effects and advantages of this invention are as follows: In this invention, when the volume of the workpiece being transported is greater than the effective load area of ​​the support plate, the operator can activate two cylinders to move the side plates and extension plates by extending the cylinders. The two extension plates move away from each other and out of the through-hole, forming a load area together with the support plate, thus achieving stable transport of large-volume workpieces and enhancing the applicability of the device. In this invention, by rotating the knob to drive the rotating ring to rotate, the protrusion slides to a specific position and then pushes the knob to drive the push plate to move and press the inclined surface of the fixed plate, so that the movable plate moves up to be flush with the support plate. Then the rotating ring is reset under the action of the torsion spring, and the protrusion is stuck in the second arc groove to fix the position of the push plate, thereby fixing the position of the movable plate. The operation is convenient and can ensure that the movable plate provides stable support for the workpiece. In this invention, the two designed support components can drive the second support plate to move when the expansion plate moves. The second support plate pulls the adjacent third support plate to move through the connecting rope. Finally, several third support plates are evenly distributed between the expansion plate and the partition plate, sharing the pressure of the workpiece on the support plate. This makes up for the lack of load performance caused by opening through holes in the support plate, and improves the support force and load performance of the support plate. Attached Figure Description

[0016] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the overall structure of the alloy steel casting transfer device proposed in this invention. Figure 2 This is a cross-sectional structural schematic diagram of the alloy steel casting transfer device proposed in this invention; Figure 3 This is a cross-sectional view of the two expansion plates. Figure 4 This is a schematic diagram of the structure when the two expansion plates are unfolded. Figure 5 This is a schematic diagram of the planar structure when the two expansion plates are unfolded. Figure 6 This is a cross-sectional view of the structure when the two expansion plates are unfolded. Figure 7 for Figure 6 Enlarged view of the structure at point A; Figure 8 Schematic diagram of the expansion board Figure 1 ; Figure 9 This is a cross-sectional view of the expansion board. Figure 10 A schematic diagram of the component structure; Figure 11 Schematic diagram of the expansion board Figure 2 ; Figure 12 for Figure 11 Enlarged view of the structure at point B.

[0017] Legend: 1. AGV transport vehicle; 11. Cylinder; 2. Carrying plate; 21. Through port; 211. Limiting strip; 212. Divider plate; 3. Extension plate; 31. Side plate; 32. Limiting port; 41. Settling trough; 42. Movable plate; 43. Fixed plate; 44. Mounting slot; 441. First arc-shaped groove; 442. Horizontal groove; 443. Second arc-shaped groove; 45. Connecting port; 51. Sliding rod; 52. Rotating ring; 521. Protrusion; 53. Torsion spring; 54. Push plate; 55. Knob; 61. First support plate; 62. Second support plate; 63. Third support plate; 64. Connecting rope. Detailed Implementation

[0018] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0019] Reference Figures 1-12As shown, the present invention provides a technical solution: an alloy steel casting casting transfer device, including an AGV transport vehicle 1, a support plate 2 fixed on the AGV transport vehicle 1, a through opening 21 on the support plate 2, a partition plate 212 fixed in the middle of the through opening 21, the partition plate 212 dividing the through opening 21 into two channels, two slidable extension plates 3 arranged inside the through opening 21, the two extension plates 3 respectively located in the two channels, the ends of the two extension plates 3 that are far apart from each other extending to the outside of the through opening 21, and the sides of each extension plate 3 having The AGV conveyor 1 is equipped with two opposing cylinders 11, with the extension and retraction ends of the two cylinders 11 connected to the two side plates 31 respectively. Several limiting strips 211 are fixed on the inner surface of the through-hole 21. Several limiting holes 32 are opened on both expansion plates 3. The shape of the limiting holes 32 matches the shape of the limiting strips 211. During the movement of the expansion plate 3, the limiting strips 211 and the limiting holes 32 provide guidance for the movement of the expansion plate 3, ensuring the stability of the expansion plate 3 during the movement and preventing the expansion plate 3 from shaking. When using the alloy steel casting casting transfer device proposed in this invention, the worker places the alloy steel casting on the support plate 2, and the AGV transport vehicle 1 transports the alloy steel casting. The AGV transport vehicle 1 determines its own position and direction by sensing environmental information, plans the optimal path in combination with task instructions, and drives the vehicle to move along the path to complete the material handling task. Specifically, the AGV relies on a variety of sensors to achieve environmental perception and positioning. For example, magnetic navigation uses magnetic sensors under the vehicle to sense the magnetic field signals of magnetic strips or nails on the ground to determine the path and position; QR code navigation uses a bottom camera to scan the grid-like QR code labels on the ground and combines internal map information to achieve precise positioning; laser navigation is equipped with a lidar to emit laser beams and receive reflected signals to measure the distance information of the surrounding environmental features, dynamically updates the map through SLAM algorithm, and achieves centimeter-level positioning; visual navigation uses a camera to capture environmental images and feature point information, and achieves positioning and mapping through computer vision algorithms. Some systems also combine inertial navigation as an auxiliary to compensate for short-term signal loss or improve accuracy, and even use hybrid navigation technology to perform high-precision correction at key nodes to improve system robustness. After positioning is completed, the AGV's decision-making system will plan the optimal and safe driving route based on task instructions and real-time perceived environmental information by combining global path planning and local path planning. Each expansion plate 3 is provided with several support components and several adjustment components. Each support component includes a sink 41 and a mounting slot 44. The sink 41 is opened on the top surface of the support plate 2. Several sinks 41 located on the same support plate 2 are arranged in a linear array. The mounting slot 44 is opened on the side of the support plate 2. The sink 41 and the mounting slot 44 are connected by a communication port 45. A movable plate 42 is slidably arranged in the sink 41. The side of the movable plate 42 is in contact with the wall of the sink 41. A fixed plate 43 is fixed on the bottom surface of the movable plate 42. An inclined surface is provided on the fixed plate 43 so that the fixed plate 43 can move upward when pushed. The adjusting assembly includes a slide rod 51, which passes through a connecting port 45 and slides within it. One end of the slide rod 51 is located within a recess 41, and the other end extends into a mounting groove 44. A push plate 54 is fixed to the end of the slide rod 51 located within the recess 41, and the push plate 54 is positioned opposite the inclined surface of the fixing plate 43. A rotating ring 52 is rotatably fitted onto the end of the slide rod 51 located within the mounting groove 44. The rotating ring 52 is connected to the slide rod 51 via a torsion spring 53. The outer circumference of the rotating ring 52... A protrusion 521 is fixed on the surface of the rotating ring 52, and a knob 55 is fixed on the side of the rotating ring 52. The knob 55 is designed to facilitate the operator to control the rotation of the rotating ring 52. In the initial state, the protrusion 521 is located at the end of the first arc groove 441 away from the horizontal groove 442. The outer peripheral surface of the rotating ring 52 is in contact with the groove wall of the mounting groove 44. The rotating ring 52, the slide rod 51, the mounting groove 44 and the connecting port 45 are coaxially arranged to ensure the stability of the slide rod 51 and the push plate 54 during the movement process. Each mounting slot 44 is provided with a limiting component, which includes a first arc-shaped slot 441, a second arc-shaped slot 443, and a transverse slot 442. The first arc-shaped slot 441, the second arc-shaped slot 443, and the transverse slot 442 are all formed on the slot wall of the mounting slot 44. The first arc-shaped slot 441 and the second arc-shaped slot 443 are arranged along the circumferential direction of the mounting slot 44, and the transverse slot 442 is arranged along the axial direction of the mounting slot 44. One end of the transverse slot 442 is connected to the first arc-shaped slot 441, and the other end of the transverse slot 442 is connected to the second arc-shaped slot 443. The first arc-shaped slot 441, the second arc-shaped slot 443, and the transverse slot 442 together form a U-shaped structure. When the volume of the workpiece to be transported is larger than the effective load area of ​​the support plate 2, the operator can increase the load area of ​​the AGV transport vehicle 1 by using two extension plates 3. Specifically, the operator activates two cylinders 11. When the telescopic ends of the cylinders 11 extend, they can drive the side plate 31 to move, causing the side plate 31 to drive the extension plates 3 to move, ultimately causing the two extension plates 3 to move away from each other and out of the through opening 21, forming a shape like... Figure 4In the state shown, the two extension plates 3 and the support plate 2 together form a load area, which can stably transport large workpieces. After adjusting the position of the extension plates 3, the operator also needs to adjust the position of the movable plate 42 located outside the through opening 21 so that the top surface of the movable plate 42 is flush with the top surface of the support plate 2. In this state, the workpiece placed on the support plate 2 can also contact the movable plate 42 located outside the through opening 21, so that these movable plates 42 can also support the workpiece. In the initial state, under the action of the torsion spring 53, the protrusion 521 on the rotating ring 52 is located in the first arc groove 441 away from the horizontal groove 442. When the position of the movable plate 42 needs to be adjusted, the operator first rotates the knob 55, causing the knob 55 to drive the rotating ring 52 to rotate. When the rotating ring 52 rotates, the protrusion 521 on it rotates accordingly, causing the protrusion 521 to slide within the first arc groove 441. When the protrusion 521 slides to the position where the first arc groove 441 connects with the horizontal groove 442, the rotating ring 52 can no longer rotate. At this time, the operator pushes the knob 55 to move the rotating ring 52 within the mounting groove 44. During this process, the rotating ring 52 can drive the push plate 54 to move via the slide rod 51. During the movement, the push plate 54 can press the inclined surface of the fixed plate 43. When the inclined surface of the fixed plate 43 is pressed, the fixed plate 43 can move upward, driving the movable plate 42 to move upward, so that... The movable plate 42 moves to a position flush with the support plate 2. At the same time, as the rotating ring 52 moves, the protrusion 521 moves accordingly, causing the protrusion 521 to slide within the transverse groove 442. When the protrusion 521 moves to the position where the transverse groove 442 connects with the second arc groove 443, the protrusion 521 can no longer move. At this time, the push plate 54 also moves completely to the bottom of the fixed plate 43. Finally, the operator releases the knob 55, causing the rotating ring 52 to reset under the action of the torsion spring 53. During the reset process, the protrusion 521 slides into the second arc groove 443 and eventually slides to the end of the second arc groove 443 away from the transverse groove 442. In this case, the protrusion 521 is stuck in the second arc groove 443, which fixes the position of the push plate 54. When the position of the push plate 54 is fixed, the position of the movable plate 42 is also fixed, thus ensuring the support effect of the movable plate 42 on the workpiece. The through-hole 21 is equipped with two load assemblies, which are located on both sides of the partition plate 212. Each load assembly includes a first support plate 61, a second support plate 62, and several third support plates 63. The first support plate 61 is fixed to the side of the partition plate 212, the second support plate 62 is fixed to the side of the extension plate 3, and several third support plates 63 are located between the first support plate 61 and the second support plate 62. Each third support plate 63 slides within the through-hole 21. Adjacent third support plates 63 are connected by connecting ropes 64. The first support plate 61 is connected to the adjacent third support plate 63 by connecting ropes 64, and the second support plate 62 is connected to the adjacent third support plate 63 by connecting ropes 64. The side of each third support plate 63 is in contact with the inner surface of the through-hole 21 to prevent the third support plate 63 from shaking and to ensure the load-bearing effect of the third support plate 63. To enhance the supporting force of the support plate 2, this invention designs two support components. When the extension plate 3 moves, it can move the second support plate 62. The second support plate 62, when moving, can pull the adjacent third support plate 63 via a corresponding connecting rope 64. The moving third support plate 63 can also pull the adjacent third support plate 63 via the corresponding connecting rope 64. Ultimately, the pulled third support plates 63 are evenly distributed between the extension plate 3 and the partition plate 212, forming a... Figure 6 In the state shown, several third support plates 63 can share the pressure exerted by the workpiece on the support plate 2, thereby improving the load performance of the support plate 2 and making up for the deficiency in the load performance of the support plate 2 caused by the through opening 21 on the support plate 2.

[0020] Working principle: The alloy steel casting transfer device proposed in this invention is an innovative solution meticulously designed to achieve efficient and stable transportation of alloy steel castings during the casting and subsequent transfer processes. Its overall working principle is extremely comprehensive, fully covering multiple key aspects such as transportation, load adjustment, adjustment of movable plate 42, and support reinforcement. Each aspect works closely together to ensure stable operation of the device under various complex working conditions.

[0021] In actual transportation scenarios, it is common to encounter situations where the volume of the workpiece being transported exceeds the effective load area of ​​the support plate 2. In such cases, operators can use two extension plates 3 to increase the load area. Specifically, two cylinders 11 are activated, extending their telescopic ends and moving the connected side plates 31. The movement of the side plates 31 causes the extension plates 3 to slowly move out of the through-hole 21 on the support plate 2. Together, the extension plates 3 and the support plate 2 form a load area capable of stably supporting large workpieces, effectively solving the problem of transporting large workpieces.

[0022] After adjusting the position of the expansion plate 3, the movable plate 42 outside the through-hole 21 also needs to be adjusted. The adjustment of the movable plate 42 is crucial; only when its top surface is flush with the top surface of the support plate 2 can it provide good support for the workpiece. During the adjustment process, the operator rotates the knob 55, which drives the rotating ring 52 to rotate. After the protrusion 521 on the rotating ring 52 slides to a specific position, it pushes the knob 55, causing the push plate 54 to move and press against the inclined surface of the fixed plate 43. Under the pressure, the movable plate 42 gradually moves upward to the appropriate position. Finally, the rotating ring 52 resets under the action of the torsion spring 53, and the protrusion 521 is engaged in the second arc-shaped groove 443, fixing the position of the push plate 54 and thus firmly securing the movable plate 42.

[0023] To further enhance the supporting force of the support plate 2, the device is designed with two support components. When the extension plate 3 moves, it drives the second support plate 62 to move as well. The second support plate 62 pulls the adjacent third support plate 63 through the connecting rope 64, and finally, several third support plates 63 are evenly distributed between the extension plate 3 and the partition plate 212. These third support plates 63 share the pressure exerted by the workpiece on the support plate 2, effectively compensating for the decrease in load-bearing capacity caused by the through opening 21 in the support plate 2.

[0024] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A casting transfer device for alloy steel castings, characterized in that: The AGV conveyor (1) is equipped with a support plate (2) and a through opening (21) on the support plate (2). A partition plate (212) is fixed in the middle of the through opening (21) and divides the through opening (21) into two channels. Two slidable extension plates (3) are provided in the through opening (21) and are located in the two channels respectively. The ends of the two extension plates (3) that are far apart from each other extend to the outside of the through opening (21). A side plate (31) is fixed on the side of each extension plate (3). Two cylinders (11) are installed on the AGV conveyor (1) and are arranged opposite each other. The telescopic ends of the two cylinders (11) are connected to the two side plates (31) respectively.

2. The alloy steel casting transfer device according to claim 1, characterized in that: Each of the expansion plates (3) is provided with several support components and several adjustment components. Each support component includes a sink groove (41) and an installation groove (44). The sink groove (41) is opened on the top surface of the support plate (2), and the installation groove (44) is opened on the side of the support plate (2). The sink groove (41) and the installation groove (44) are connected by a communication port (45). A movable plate (42) is slidably arranged in the sink groove (41). A fixed plate (43) is fixed on the bottom surface of the movable plate (42). An inclined surface is provided on the fixed plate (43). Each of the mounting slots (44) is provided with a limit component.

3. The alloy steel casting transfer device according to claim 2, characterized in that: Several sinks (41) located on the same support plate (2) are arranged in a linear array.

4. The alloy steel casting transfer device according to claim 2, characterized in that: The adjustment assembly includes a slide rod (51) that passes through a connecting port (45) and slides within the connecting port (45). One end of the slide rod (51) is located in the sink groove (41), and the other end extends into the mounting groove (44). A push plate (54) is fixed to one end of the slide rod (51) located in the sink groove (41). The push plate (54) is positioned opposite the inclined surface of the fixing plate (43). A rotating ring (52) is rotatably sleeved on one end of the slide rod (51) located in the mounting groove (44). The rotating ring (52) is connected to the slide rod (51) by a torsion spring (53). A protrusion (521) is fixed to the outer circumferential surface of the rotating ring (52), and a knob (55) is fixed to the side of the rotating ring (52).

5. The alloy steel casting transfer device according to claim 4, characterized in that: The limiting component includes a first arc-shaped groove (441), a second arc-shaped groove (443), and a transverse groove (442). The first arc-shaped groove (441), the second arc-shaped groove (443), and the transverse groove (442) are all formed on the groove wall of the mounting groove (44). The first arc-shaped groove (441) and the second arc-shaped groove (443) are arranged along the circumferential direction of the mounting groove (44), and the transverse groove (442) is arranged along the axial direction of the mounting groove (44). One end of the transverse groove (442) is connected to the first arc-shaped groove (441), and the other end of the transverse groove (442) is connected to the second arc-shaped groove (443). The first arc-shaped groove (441), the second arc-shaped groove (443), and the transverse groove (442) together form a U-shaped structure.

6. The alloy steel casting transfer device according to claim 5, characterized in that: In the initial state, the protrusion (521) is located at the end of the first arc groove (441) away from the transverse groove (442).

7. The alloy steel casting transfer device according to claim 2, characterized in that: The side of the movable plate (42) is in contact with the wall of the settling tank (41).

8. The alloy steel casting transfer device according to claim 5, characterized in that: The outer circumferential surface of the rotating ring (52) is in contact with the groove wall of the mounting groove (44), and the rotating ring (52), the slide rod (51), the mounting groove (44) and the connecting port (45) are arranged coaxially.

9. The alloy steel casting transfer device according to claim 1, characterized in that: The through-hole (21) is provided with two load components. The two load components are located on both sides of the partition plate (212). Each load component includes a first support plate (61), a second support plate (62) and several third support plates (63). The first support plate (61) is fixed to the side of the partition plate (212), the second support plate (62) is fixed to the side of the extension plate (3), and several third support plates (63) are located between the first support plate (61) and the second support plate (62). Each third support plate (63) slides in the through-hole (21). Two adjacent third support plates (63) are connected by a connecting rope (64). The first support plate (61) is connected to the adjacent third support plate (63) by a connecting rope (64), and the second support plate (62) is connected to the adjacent third support plate (63) by a connecting rope (64).

10. The alloy steel casting transfer device according to claim 1, characterized in that: The inner surface of the through opening (21) is fixed with several limiting strips (211), and several limiting openings (32) are opened on both expansion plates (3). The shape of the limiting openings (32) is adapted to the shape of the limiting strips (211).

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