Lifting and dumping device for transferring molten aluminum of large-tonnage aluminum alloy die-casting equipment

Abstract

The invention discloses a lifting and dumping device for transferring molten aluminum of large-tonnage aluminum alloy die-casting equipment, and belongs to the technical field of molten aluminum dumping devices.The lifting and dumping device comprises a lifting platform, an operation platform is installed on the lifting platform, turnover supports are symmetrically installed at the front end of the operation platform, and a hydraulic dumping frame is installed on the turnover supports and used for containing a molten aluminum ladle; and the rotary launder is used for guiding molten aluminum flowing out of the molten aluminum ladle into an external container, and an automatic limiting mechanism is installed on the hydraulic dumping frame. According to the technical key points, the lifting table can freely adjust the height of an aluminum water pouring-out point, and the provided rotating launder can rotatably adjust the horizontal position of the aluminum water pouring-out point, so that the aluminum water pouring-out device can adapt to molds, casting wells and the like at different positions; the automatic limiting mechanism automatically takes effect to prevent the molten aluminum ladle from shifting in the pouring process, after pouring is completed, the automatic limiting mechanism automatically cancels limiting on the molten aluminum ladle, and workers can conveniently and smoothly take down the molten aluminum ladle.

Description

Technical Field

[0001] The invention relates to the technical field of molten aluminum dumping devices, in particular to a lifting and dumping device used for transferring molten aluminum in large-tonnage aluminum alloy high-pressure casting equipment. Background Art

[0002] Aluminum liquid pouring refers to the process of safely and accurately pouring high-temperature molten aluminum liquid from storage or transportation equipment (such as vacuum aluminum liquid ladle) and injecting it into designated molds, casting wells or other process equipment. This process is crucial in the aluminum processing industry and requires strict compliance with operating procedures to ensure safety and production efficiency.

[0003] The utility model with announcement number CN213794193U discloses an aluminum liquid transport insulation bag which is convenient for pouring aluminum liquid. By means of a bracket arranged at the bottom of the insulation bag, and a cylinder, a second lifting ear and a traction rope arranged on the bracket, the cylinder and the traction rope can be used to drive the insulation bag to tilt to one side, and the aluminum liquid can be poured through the bag mouth. By means of a rotating shaft and a cross bar arranged at the bottom of the insulation bag, the tilting direction of the insulation bag can be limited to avoid directional deviation when the insulation bag is tilted, thereby preventing safety hazards, thereby facilitating the insulation bag.

[0004] Although the above-mentioned device can complete the directional dumping of molten aluminum, it cannot adjust the height of the molten aluminum outflow position and the position in the horizontal direction, that is, the device can only realize the fixed-point pouring of molten aluminum, and has strict requirements on the height and position of related equipment settings. When the position and height information of equipment such as molds and casting wells change, the installation position of the above-mentioned device needs to be adjusted accordingly, and the operation is relatively cumbersome. In addition, although structures such as rotating shafts and cross bars can limit the insulation bag to prevent it from shifting during the dumping process, this structural form will interfere with the disassembly and assembly of the insulation bag, and workers need to manually disassemble and assemble the insulation bag before they can remove and install the insulation bag. The operation is inconvenient and will take up too much time. Therefore, in view of the above problems, a lifting and dumping device for the transfer of molten aluminum of large-tonnage aluminum alloy die-casting equipment is proposed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a lifting and dumping device for the aluminum liquid transfer of large-tonnage aluminum alloy die-casting equipment. In the aluminum liquid dumping device, since it is equipped with a lifting platform, the height of the aluminum liquid pouring point can be freely adjusted, and the equipped rotating flow channel is used to collect the aluminum liquid poured out of the aluminum water bag and guide it to the mold and other containers. Since the rotating flow channel can rotate to adjust the horizontal position of its lead-out point, it can be adapted to molds, casting wells, etc. in different positions. In addition, when the hydraulic dumping frame is in operation to dump the aluminum liquid, the automatic limiting mechanism automatically works to limit the aluminum water bag to prevent the aluminum water bag from shifting during the dumping process. When the dumping is completed and the hydraulic dumping frame is reset, the automatic limiting mechanism automatically cancels the limit on the aluminum water bag, which is convenient for workers to remove it smoothly. The technical problems that the height of the aluminum water outflow position and the position in the horizontal direction cannot be adjusted in the comparative technology, the adaptability is poor, and the effectiveness of the limiting structure requires manual operation by workers, which makes the operation cumbersome and takes up too much time.

[0006] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0007] A lifting and dumping device for aluminum liquid transfer of large-tonnage aluminum alloy die-casting equipment comprises a lifting platform, on which a working platform is installed, a symmetrically arranged flip bracket is installed at the front end of the working platform, a hydraulic dumping frame is installed on the lifting platform, the hydraulic dumping frame is used to place an aluminum water bag, a positioning component is used to guide the aluminum water bag to be placed at a specified position on the hydraulic dumping frame, and a rotating flow trough is installed at the front end of the flip bracket to guide the aluminum water flowing out of the aluminum water bag into an external container, wherein an automatic limiting mechanism is installed on the hydraulic dumping frame, and when the hydraulic dumping frame is in operation to dump the aluminum water, the automatic limiting mechanism works to limit the aluminum water bag, and when the tilting When the pouring is completed and the hydraulic tipping frame is reset, the automatic limit mechanism automatically cancels the limit on the aluminum water ladle. Based on the above structural form, the lifting platform can freely adjust the height of the aluminum water pouring point, and the equipped rotating flow channel can rotate to adjust the horizontal position of its lead-out point, so it can be adapted to molds and casting wells in different positions, and has strong adaptability. In addition, when the hydraulic tipping frame is operating to pour the aluminum water, the automatic limit mechanism automatically works to limit the aluminum water ladle to prevent the aluminum water ladle from shifting during the pouring process. When the pouring is completed and the hydraulic tipping frame is reset, the automatic limit mechanism automatically cancels the limit on the aluminum water ladle, making it convenient for workers to remove it smoothly.

[0008] In a possible implementation, the aluminum ladle includes a ladle body for holding aluminum liquid, a water outlet is provided on the top, and symmetrically arranged matching feet are fixedly provided on the bottom, and a card slot is provided on the matching feet. The structural form of the matching feet provides the necessary structural basis for the automatic limiting mechanism to play a limiting role. When the automatic limiting mechanism is stuck in the card slot, the limiting effect takes effect. When the automatic limiting mechanism is out of the card slot, the limiting effect fails.

[0009] In a possible implementation, the automatic limiting mechanism includes a limiting slide bolt that matches the size of the matching foot slot, which is slidably arranged in the hydraulic tipping frame, and a limiting ring is fixedly arranged at one end of the limiting slide bolt close to the matching foot. A reset spring is provided on the outer sleeve of the limiting slide bolt, and a magnetic end piece is fixedly arranged at the end of the limiting slide bolt away from the matching foot. When the magnetic end piece is subjected to the adsorption force, the limiting slide bolt will be pulled out of the slot, and the limiting effect will fail at this time. When the magnetic end piece loses the adsorption force, the limiting slide bolt will reset and clamp the slot under the action of the reset spring, and the limiting effect will take effect at this time.

[0010] In one possible implementation, an electromagnet corresponding to the magnetic end piece is installed on the hydraulic tipping frame, and a battery pack is installed on the hydraulic tipping frame, wherein a contact switch assembly is connected in series in the circuit between the battery pack and the electromagnet through a wire, and the above-mentioned structural form constitutes a power supply circuit for the electromagnet, that is, the operation of the electromagnet is controlled by turning on and off the contact switch assembly.

[0011] In one possible implementation, when the contact switch assembly is turned on, the electromagnet starts working, adsorbing the magnetic end piece to separate the limit slide bolt from the mating foot. When the contact switch assembly is disconnected, the electromagnet stops working, and the limit slide bolt is reset and engaged with the mating foot. Based on the above technical solution, the effectiveness of the automatic limit mechanism as a whole is linked to the on and off of the contact switch assembly.

[0012] In one possible implementation, the contact switch assembly includes a moving insulating sheet and a static insulating sheet, both of which are equipped with conductive contacts, wherein the moving insulating sheet is fixedly mounted on the hydraulic tipping frame, and the static insulating sheet is fixedly mounted on the working platform. Based on the above technical solution, the on and off of the contact switch assembly is controlled by the hydraulic tipping frame, that is, when the hydraulic tipping frame starts to dump molten aluminum, the moving insulating sheet moves away from the static insulating sheet. At this time, the electromagnet stops working, and the limit slide bolt is engaged with the matching foot to play a limiting role. After the hydraulic tipping frame completes dumping of the molten aluminum and is reset, the moving insulating sheet is fitted with the static insulating sheet. At this time, the electromagnet works, and the limit slide bolt is separated from the matching foot to release the limiting effect. In summary, the automatic limit mechanism can work automatically according to the working conditions, without the need for manual operation by workers, which is very convenient.

[0013] In one possible implementation, the hydraulic tipping frame includes a tipping frame body and a tipping hydraulic cylinder, wherein the tipping frame body is rotatably connected to the flipping bracket, the bottom end of the tipping hydraulic cylinder is rotatably connected to the working platform via a hinged support, a connecting shaft is fixedly provided on the top of the tipping frame body, and the top of the tipping hydraulic cylinder is rotatably connected to the connecting shaft. When the tipping hydraulic cylinder is working, it can push the tipping frame body to flip over, thereby completing the dumping of molten aluminum.

[0014] In one possible implementation, the rotating flow trough includes a support frame, a rotating bracket with a rotatable connection is installed on the upper side of the support frame, and a driving motor is installed on the lower side of the support frame, the driving motor is used to drive the rotating bracket to rotate, and a guide trough is installed on the rotating bracket, and a liquid outlet is provided at the end of the guide trough. The guide trough is used to collect the poured aluminum liquid and guide it out of the liquid outlet, and the driving motor can drive the guide trough to rotate by working, so as to adjust the position of the liquid outlet, and has high adaptability.

[0015] In a possible implementation, the lifting platform includes a base, to which a scissors strut is connected, and a lifting bracket is connected to the top of the scissors strut. A lower mounting frame is installed in the base, and a lifting hydraulic cylinder is installed on the base. An upper connecting frame is installed in the lifting bracket, and the top of the lifting hydraulic cylinder is connected to the upper connecting frame. The lifting hydraulic cylinder can drive the lifting bracket to move up and down through its own work, so as to adjust the dumping height of the aluminum ladle, and has high adaptability.

[0016] In one possible implementation, the positioning assembly includes a positioning rod and a positioning cover cylinder, wherein the positioning rod is fixedly connected to the hydraulic tipping frame, and the positioning cover cylinder is fixedly arranged on the outer wall of the aluminum ladle. When the aluminum ladle is placed using a forklift, the positioning cover cylinder can cooperate with the positioning rod to play a positioning role, thereby ensuring that the aluminum ladle can be placed in the designated position.

[0017] In summary, the present invention includes the following beneficial technical effects:

[0018] In the aluminum liquid pouring device, a hydraulic pouring frame is used to support and pour the aluminum liquid ladle. Since it is equipped with a lifting platform, the height of the aluminum liquid ladle can be freely adjusted to adjust the height of the aluminum liquid pouring point. The equipped rotating flow trough is used to collect the aluminum liquid poured out of the aluminum liquid ladle and guide it to a container such as a mold. Since the rotating flow trough can rotate to adjust the horizontal position of its outlet point, it can be adapted to containers such as molds and casting wells at different positions.

[0019] In addition, when the hydraulic tipping frame is operating to tip the molten aluminum, the automatic limiting mechanism automatically works to limit the aluminum ladle to prevent the aluminum ladle from shifting during the tipping process. When the tipping is completed and the hydraulic tipping frame is reset, the automatic limiting mechanism automatically cancels the limit on the aluminum ladle, making it easier for workers to remove it smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2It is a schematic diagram of the dumping state of the present invention;

[0023] Figure 3 It is a schematic diagram of the local structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the power supply circuit of the automatic limit mechanism of the present invention;

[0025] Figure 5 It is a schematic diagram of the lifting platform structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the rotating flow channel structure of the present invention.

[0027] In the figure: 1. lifting platform; 11. base; 12. scissor support frame; 13. lifting bracket; 14. lower mounting frame; 15. upper connecting frame; 16. lifting hydraulic cylinder; 2. working platform; 3. flip bracket; 4. hydraulic tipping frame; 41. tipping frame body; 42. tipping hydraulic cylinder; 43. hinged support; 44. connecting shaft; 5. aluminum water bag; 51. bag body; 52. water outlet; 53. matching foot; 6. positioning assembly; 6 1. Positioning rod; 62. Positioning cover; 7. Automatic limit mechanism; 71. Limit slide bolt; 72. Return spring; 73. Magnetic end piece; 74. Electromagnet; 75. Battery pack; 76. Contact switch assembly; 761. Moving insulating piece; 762. Static insulating piece; 763. Conductive contact piece; 77. Wire; 8. Rotating flow slot; 81. Support frame; 82. Drive motor; 83. Rotating bracket; 84. Guide slot; 85. Liquid outlet. DETAILED DESCRIPTION

[0028] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0029] like Figure 1 - Figure 2As shown, the present embodiment provides a lifting and dumping device for aluminum liquid transfer of large-tonnage aluminum alloy die-casting equipment, including a lifting platform 1, on which a working platform 2 is installed, a symmetrically arranged turning bracket 3 is installed at the front end of the working platform 2, a hydraulic dumping rack 4 is installed on it, the hydraulic dumping rack 4 is used to place an aluminum water bag 5, a positioning component 6, which is used to guide the aluminum water bag 5 to be placed at a specified position on the hydraulic dumping rack 4, and a rotating flow chute 8, which is installed at the front end of the turning bracket 3, and is used to guide the aluminum water bag 5 to be placed at a specified position on the hydraulic dumping rack 4, and a rotating flow chute 8, which is installed at the front end of the turning bracket 3, and is used to guide the aluminum water flowing out of the aluminum water bag 5 into an external container, wherein an automatic limiting mechanism 7 is installed on the hydraulic dumping rack 4, and when the hydraulic dumping rack 4 is operating to dump aluminum water, the automatic limiting mechanism 7 works to the aluminum water bag 5 Limiting is performed. When the dumping is completed and the hydraulic dumping frame 4 is reset, the automatic limiting mechanism 7 automatically cancels the limit on the aluminum water ladle 5. Based on the above structural form, the lifting platform 1 can freely adjust the height of the aluminum water pouring point, and the equipped rotating flow channel 8 can rotate to adjust the horizontal position of its lead-out point, so it can be adapted to molds and casting wells in different positions, and has strong adaptability. In addition, when the hydraulic dumping frame 4 is operating to dump aluminum water, the automatic limiting mechanism 7 automatically works to limit the aluminum water ladle 5 to prevent the aluminum water ladle 5 from shifting during the dumping process. When the dumping is completed and the hydraulic dumping frame 4 is reset, the automatic limiting mechanism 7 automatically cancels the limit on the aluminum water ladle 5, making it convenient for workers to remove it smoothly.

[0030] like Figure 3 As shown, the aluminum water ladle 5 includes a ladle body 51 for containing aluminum water, a water outlet 52 is provided on the top, and symmetrically arranged matching feet 53 are fixedly provided on the bottom, and a card slot is provided on the matching feet 53. The structural form of the matching feet 53 provides the necessary structural basis for the automatic limiting mechanism 7 to play a limiting role. When the automatic limiting mechanism 7 is stuck in the card slot, the limiting effect takes effect. When the automatic limiting mechanism 7 is out of the card slot, the limiting effect fails.

[0031] like Figure 3 - Figure 4As shown, the automatic limiting mechanism 7 includes a limiting slide bolt 71 that matches the size of the slot of the matching foot 53, which is slidably arranged in the hydraulic tipping frame 4, and a limiting ring is fixedly arranged at one end thereof close to the matching foot 53, a return spring 72 is arranged on the outer sleeve of the limiting slide bolt 71, and a magnetic end piece 73 is fixedly arranged at the end of the limiting slide bolt 71 away from the matching foot 53. When the magnetic end piece 73 is acted upon by an adsorption force, the limiting slide bolt 71 is pulled out of the slot, and the limiting effect is invalid at this time. When the magnetic end piece 73 loses the adsorption force, the limiting slide bolt 71 is pulled out of the slot, and the limiting effect is invalid at this time. When in use, the limiting slide bolt 71 will reset and jam the card slot under the action of the reset spring 72, and the limiting effect will take effect at this time; accordingly, an electromagnet 74 corresponding to the magnetic end piece 73 is installed on the hydraulic tipping frame 4, and a battery pack 75 is installed on the hydraulic tipping frame 4, wherein a contact switch assembly 76 is connected in series in the circuit between the battery pack 75 and the electromagnet 74 through a wire 77. The above-mentioned structural form constitutes a power supply circuit for the electromagnet 74, that is, the operation of the electromagnet 74 is controlled by the on-off of the contact switch assembly 76.

[0032] In the above technical solution, when the contact switch assembly 76 is turned on, the electromagnet 74 starts to work, adsorbs the magnetic end piece 73 to separate the limit slide bolt 71 from the matching foot 53, and when the contact switch assembly 76 is disconnected, the electromagnet 74 stops working, and the limit slide bolt 71 is reset and engaged with the matching foot 53. Based on the above technical solution, the effectiveness of the automatic limit mechanism 7 as a whole is linked to the on and off of the contact switch assembly 76; wherein the contact switch assembly 76 includes a moving insulating sheet 761 and a static insulating sheet 762, both of which are equipped with conductive contacts 763, wherein the moving insulating sheet 761 is fixedly mounted on the hydraulic tipping frame 4, and the static insulating sheet 762 is fixedly mounted on the hydraulic tipping frame 4. 62 is fixedly installed on the working platform 2. Based on the above technical solution, the on and off of the contact switch assembly 76 is controlled by the hydraulic tipping frame 4, that is, when the hydraulic tipping frame 4 starts to dump molten aluminum, the moving insulating sheet 761 moves away from the static insulating sheet 762. At this time, the electromagnet 74 stops working, and the limit slide bolt 71 is engaged with the matching foot 53 to play a limiting role. After the hydraulic tipping frame 4 completes dumping of molten aluminum and is reset, the moving insulating sheet 761 fits with the static insulating sheet 762. At this time, the electromagnet 74 works, and the limit slide bolt 71 is separated from the matching foot 53 to release the limiting effect. In summary, the automatic limiting mechanism 7 can work automatically according to the working conditions without the need for manual operation by workers, which is very convenient.

[0033] like Figure 2 As shown, the hydraulic tipping frame 4 includes a tipping frame body 41 and a tipping hydraulic cylinder 42, wherein the tipping frame body 41 is rotatably connected to the flip bracket 3, the bottom end of the tipping hydraulic cylinder 42 is rotatably connected to the working platform 2 via a hinged support 43, a connecting shaft 44 is fixedly provided on the top of the tipping frame body 41, and the top of the tipping hydraulic cylinder 42 is rotatably connected to the connecting shaft 44. When the tipping hydraulic cylinder 42 is working, it can push the tipping frame body 41 to flip over, thereby completing the dumping of molten aluminum.

[0034] like Figure 6 As shown, the rotating flow trough 8 includes a support frame 81, on the upper side of which is mounted a rotatably connected rotating bracket 83, and on the lower side of which is mounted a driving motor 82, the driving motor 82 is used to drive the rotating bracket 83 to rotate, a guide groove 84 is mounted on the rotating bracket 83, and a liquid outlet 85 is provided at the end thereof, the guide groove 84 is used to collect the poured aluminum liquid and guide it out from the liquid outlet 85, and the driving motor 82 can drive the guide groove 84 to rotate by working, so as to adjust the position of the liquid outlet 85, and has high adaptability.

[0035] like Figure 5 As shown, the lifting platform 1 includes a base 11, on which a scissors strut 12 is connected, and the top of the scissors strut 12 is connected to a lifting bracket 13, a lower mounting frame 14 is installed in the base 11, on which a lifting hydraulic cylinder 16 is installed, and an upper connecting frame 15 is installed in the lifting bracket 13, and the top of the lifting hydraulic cylinder 16 is connected to the upper connecting frame 15, and the lifting hydraulic cylinder 16 can drive the lifting bracket 13 to move up and down through its own work, so as to adjust the dumping height of the aluminum ladle 5, and has high adaptability.

[0036] like Figure 3 As shown, the positioning assembly 6 includes a positioning rod 61 and a positioning cover 62, wherein the positioning rod 61 is fixedly connected to the hydraulic tipping frame 4, and the positioning cover 62 is fixedly arranged on the outer wall of the aluminum water ladle 5. When the aluminum water ladle 5 is placed by a forklift, the positioning cover 62 can cooperate with the positioning rod 61 to play a positioning role, ensuring that the aluminum water ladle 5 can be placed in the specified position.

[0037] The use principle and use process of the present invention:

[0038] In the aluminum liquid pouring device, a hydraulic dumping frame 4 is used to support and dump the aluminum liquid ladle 5. Since it is equipped with a lifting platform 1, the height of the aluminum liquid ladle 5 can be freely adjusted to adjust the height of the aluminum liquid pouring point. The equipped rotating flow chute 8 is used to collect the aluminum liquid poured out of the aluminum liquid ladle 5 and guide it to a container such as a mold. Since the rotating flow chute 8 can rotate to adjust the horizontal position of its lead-out point, it can be adapted to containers such as molds and casting wells in different positions.

[0039] In addition, when the hydraulic dumping frame 4 is operating to dump the molten aluminum, the automatic limiting mechanism 7 automatically works to limit the molten aluminum ladle 5 to prevent the molten aluminum ladle 5 from shifting during the dumping process. When the dumping is completed and the hydraulic dumping frame 4 is reset, the automatic limiting mechanism 7 automatically cancels the limit on the molten aluminum ladle 5, making it convenient for workers to remove it smoothly.

[0040] When the locking cam 72 is in the action state, the locking cam 71 is in the action state of being lifted up, and the locking cam 73 is in the action state of being lifted up, so that the locking cam 73 can be locked in the locking cam 73 by the locking cam 74.

[0041] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A lifting and dumping device for transferring molten aluminum in large-tonnage aluminum alloy die-casting equipment, characterized in that: include: A lifting platform (1) is mounted with a working platform (2), a symmetrically arranged turning bracket (3) is mounted at the front end of the working platform (2), a hydraulic tipping rack (4) is mounted on the turning bracket, and the hydraulic tipping rack (4) is used to place an aluminum ladle (5); A positioning assembly (6) for guiding the aluminum ladle (5) to be placed at a designated position on the hydraulic dumping frame (4); A rotating flow trough (8) is installed at the front end of the turning bracket (3) and is used to guide the molten aluminum flowing out of the molten aluminum ladle (5) into an external container; The hydraulic tipping frame (4) is provided with an automatic limit mechanism (7). When the hydraulic tipping frame (4) is in operation to tip the molten aluminum, the automatic limit mechanism (7) works to limit the position of the molten aluminum ladle (5). When the tipping is completed and the hydraulic tipping frame (4) is reset, the automatic limit mechanism (7) automatically cancels the limit on the molten aluminum ladle (5).

2. The lifting and dumping device for aluminum liquid transportation of large-tonnage aluminum alloy die-casting equipment according to claim 1 is characterized in that: The aluminum water ladle (5) comprises a ladle body (51) for containing aluminum water, a water outlet (52) being provided on the top thereof, and symmetrically arranged matching feet (53) being fixedly provided on the bottom thereof, and a clamping groove being provided on the matching feet (53).

3. The lifting and dumping device for aluminum liquid transportation of large-tonnage aluminum alloy die-casting equipment according to claim 2 is characterized in that: The automatic limit mechanism (7) comprises a limit slide bolt (71) having a size matching the slot of the matching foot (53), which is slidably arranged in the hydraulic tipping frame (4), and a limit ring is fixedly arranged at one end of the limit slide bolt close to the matching foot (53), a return spring (72) is arranged on the outer sleeve of the limit slide bolt (71), and a magnetic end piece (73) is fixedly arranged at the end of the limit slide bolt (71) away from the matching foot (53).

4. The lifting and dumping device for aluminum liquid transportation of large-tonnage aluminum alloy die-casting equipment according to claim 3 is characterized in that: The hydraulic tilting frame (4) is provided with an electromagnet (74) corresponding to the magnetic end piece (73), and a battery pack (75) is provided on the hydraulic tilting frame (4), wherein a contact switch assembly (76) is connected in series in a circuit between the battery pack (75) and the electromagnet (74) via a wire (77).

5. The lifting and dumping device for aluminum liquid transportation of large-tonnage aluminum alloy die-casting equipment according to claim 3 is characterized in that: When the contact switch assembly (76) is turned on, the electromagnet (74) starts to work, adsorbs the magnetic end piece (73) so that the limit slide bolt (71) is separated from the matching foot (53); when the contact switch assembly (76) is turned off, the electromagnet (74) stops working, and the limit slide bolt (71) is reset to be connected with the matching foot (53).

6. The lifting and dumping device for aluminum liquid transportation of large-tonnage aluminum alloy die-casting equipment according to claim 5 is characterized in that: The contact switch assembly (76) comprises a movable insulating sheet (761) and a static insulating sheet (762), both of which are provided with a conductive contact sheet (763), wherein the movable insulating sheet (761) is fixedly mounted on the hydraulic tipping frame (4), and the static insulating sheet (762) is fixedly mounted on the working platform (2).

7. The lifting and dumping device for aluminum liquid transportation of large-tonnage aluminum alloy die-casting equipment according to claim 1 is characterized in that: The hydraulic tipping frame (4) comprises a tipping frame body (41) and a tipping hydraulic cylinder (42), wherein the tipping frame body (41) is rotatably connected to the flip bracket (3), the bottom end of the tipping hydraulic cylinder (42) is rotatably connected to the working platform (2) via a hinged support (43), a connecting shaft (44) is fixedly provided on the top of the tipping frame body (41), and the top of the tipping hydraulic cylinder (42) is rotatably connected to the connecting shaft (44).

8. The lifting and dumping device for aluminum liquid transportation of large-tonnage aluminum alloy die-casting equipment according to claim 1 is characterized in that: The rotating flow trough (8) comprises a support frame (81), on the upper side of which a rotating bracket (83) is mounted for rotation, and on the lower side of which a driving motor (82) is mounted for driving the rotating bracket (83) to rotate. The rotating bracket (83) is mounted with a guide groove (84), and an end portion of the guide groove (84) is provided with a liquid outlet (85).

9. The lifting and dumping device for aluminum liquid transportation of large-tonnage aluminum alloy die-casting equipment according to claim 1 is characterized in that: The lifting platform (1) comprises a base (11) to which a scissors support frame (12) is connected, and the top of the scissors support frame (12) is connected to a lifting bracket (13), a lower mounting frame (14) is installed in the base (11), and a lifting hydraulic cylinder (16) is installed on the lower mounting frame (14), and an upper connecting frame (15) is installed in the lifting bracket (13), and the top of the lifting hydraulic cylinder (16) is connected to the upper connecting frame (15).

10. The lifting and dumping device for aluminum liquid transportation of large-tonnage aluminum alloy die-casting equipment according to claim 1 is characterized in that: The positioning assembly (6) comprises a positioning rod (61) and a positioning cover tube (62), wherein the positioning rod (61) is fixedly connected to the hydraulic tipping frame (4), and the positioning cover tube (62) is fixedly arranged on the outer wall of the aluminum ladle (5).

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