Hot forging equipment for large wind turbine main shaft forgings and use method thereof

Abstract

The invention discloses a hot forging forming device for a large wind turbine main shaft forging and a method for using the same, and belongs to the technical field of forging equipment. The hot forging forming device for a large wind turbine main shaft forging comprises a forging equipment and also comprises: an outer shell, which is placed on the forging equipment; a support member, which is fixedly arranged in the outer shell, on which a support seat is movably arranged, and a lifting hydraulic cylinder for driving the support seat to rise and fall is arranged at the bottom of the outer shell; and a supporting cross bar, which is provided with multiple groups and is slidably connected to the outer shell, and the ends of each group of supporting cross bars are connected to the same die base body, and the multiple die base bodies are enclosed to form a main shaft die cavity for forging the forging body; the invention can realize the rapid separation of the main shaft forging from the main shaft die without the need for ejection by an iron column, and in the process, the residual oxidized debris in the main shaft forging is automatically removed, thereby reducing the workload of the staff and improving the forging efficiency and forging effect of the main shaft forging.

Description

Technical Field

[0001] The invention relates to the technical field of forging equipment, and in particular to hot forging equipment for a large wind turbine main shaft forging and a use method thereof. Background Art

[0002] A wind turbine is an electric device that converts wind energy into mechanical work, which drives the rotor to rotate and finally outputs alternating current. The working principle of a wind turbine is relatively simple. The wind rotor rotates under the action of wind power, which converts the kinetic energy of the wind into the mechanical energy of the wind rotor shaft. The generator rotates and generates electricity under the drive of the wind rotor shaft. The wind turbine main shaft is a key component in a wind turbine. The existing wind turbine main shaft generally adopts an integral forging manufacturing method, which is conducive to ensuring the physical and chemical properties and uniformity of the organizational structure of the wind turbine main shaft material, and is suitable for operation in harsh working environments and under large alternating loads.

[0003] The existing fan main shaft forms a steel column after preliminary forging, and then the steel column needs to be placed in the main shaft mold, and is completely pressed into the mold by a forging press, and the steel column is forged into the shape of the main shaft by the mold to reduce its subsequent processing allowance; but when the main shaft forging is taken out of the main shaft mold, the staff needs to clamp the main shaft mold with the clamp in front of the forklift and hit the iron column protruding from the ground several times to separate the main shaft forging from the main shaft mold. The operation is relatively cumbersome, and the iron column protruding from the ground collides with the bottom "point" of the main shaft forging, so that there is a certain difference in the density between the collision part and other parts of the bottom of the main shaft forging. At the same time, when the forging is pressed into the main shaft mold, there will still be a certain amount of oxidized debris, and the oxidized debris needs to be manually cleaned up later, otherwise when the subsequent forging continues to be die-forged, the accumulated oxidized debris will re-adhere to the forging, affecting the forging effect of the forging, thereby increasing the workload of the staff and reducing the forging efficiency of the forging. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a hot forging forming device for a large wind turbine main shaft forging and a use method thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A hot forging device for a large wind turbine main shaft forging, comprising a forging device and further comprising:

[0007] an outer shell, the outer shell being placed on the forging equipment;

[0008] A support member, wherein the support member is fixedly arranged in the outer shell, a support seat is movably arranged on the support member, and a lifting hydraulic cylinder for driving the support seat to rise and fall is arranged at the bottom of the outer shell;

[0009] A supporting cross bar, wherein the supporting cross bars are provided in multiple groups and are slidably connected to the outer shell, and the ends of each group of the supporting cross bars are connected to the same die base body, and the multiple die base bodies are enclosed to form a main shaft die cavity for forging the forging body, and the bottom of the die base body is movably against the supporting base;

[0010] Wherein, the piston rod of the lifting hydraulic cylinder is connected to a connecting rod assembly for driving the mold base body to move horizontally.

[0011] Preferably, the mold base body includes a lower mold base connected to the supporting cross bar, a side plate fixed on the lower mold base, a first elastic telescopic rod fixed to the side plate, and an upper mold base connected to one end of the first elastic telescopic rod away from the side plate, and the upper mold base slides on the lower mold base.

[0012] Preferably, the connecting rod assembly includes a conical seat fixed on the piston rod, a swing rod is rotatably connected to the conical seat via a pin, and a connecting rod rotatably connected to the swing rod is fixed on the lower die seat.

[0013] Preferably, the inner wall of the outer shell is fixedly provided with a push rod which is movably abutted against the upper mold base, a second elastic telescopic rod is fixedly provided on the push rod, a movable rod is fixedly provided on the top of the second elastic telescopic rod, and a push plate is connected to the end of the movable rod away from the second elastic telescopic rod, and the push plate is movably abutted against the upper mold base.

[0014] Preferably, the push plate and the upper mold base are provided with matching extrusion slopes. When the second elastic telescopic rod is not stretched, the top surface of the push plate and the top surface of the upper mold base are in the same plane. When the second elastic telescopic rod is stretched, the bottom surface of the push plate is higher than or equal to the top surface of the upper mold base.

[0015] Preferably, the support member includes a support plate fixedly disposed in the outer shell and an inclined support plate fixedly disposed between the support plate and the inner wall of the outer shell.

[0016] Preferably, the support seat comprises a lower plate body fixedly connected to the piston rod and an upper plate body rotatably connected to the lower plate body via a pin shaft, and a third elastic telescopic rod is arranged between the upper plate body and the lower plate body.

[0017] Preferably, the outer shell includes a base and an annular shell, a feed chute is provided between the base and the annular shell, a support column for connecting the base and the annular shell is fixed in the feed chute, and the top wall of the base is set to a conical surface.

[0018] Preferably, the forging equipment includes a fixed seat, a forging table fixed on the fixed seat, guide rods fixed at the four corners of the fixed seat, a top seat connected to the top of the guide rods, a forging hydraulic cylinder fixed on the top seat, a motor seat connected to the lower end of the forging hydraulic cylinder, a lifting plate fixed to the motor seat and sliding on the guide rods, and a forging seat connected to the motor output shaft in the motor seat and rotating on the lower side of the lifting plate, and the outer shell is placed on the forging table.

[0019] The present invention also discloses a method for using a hot forging forming device for a large wind turbine main shaft forging, comprising the following steps:

[0020] S1: After the forging body is placed on the forging table and preliminarily forged into an axis shape using a forging device, the outer shell is then placed on the forging table, and the axis-shaped forging body is placed in a main shaft mold cavity formed by a plurality of die base bodies;

[0021] S2: Control the forging equipment to work again, and the forging hydraulic cylinder drives the lifting plate and the forging seat to move downward. During this process, the motor in the motor seat controls the forging seat to rotate, so as to realize the forging work on the forging body in the spindle die cavity, so that the forging body fills the spindle die cavity;

[0022] S3: After the forging of the forging body is completed, the staff controls the lifting hydraulic cylinder to work, and the piston rod of the lifting hydraulic cylinder lifts the forging body through the support seat, so that the forging body moves out of the outer shell;

[0023] When the piston rod of the lifting hydraulic cylinder moves, the swing rod is driven to move through the conical seat, so that the swing rod drives the lower die seat to move through the connecting rod. When the lower die seat moves, the upper die seat is driven to move synchronously through the first elastic telescopic rod, so that the multiple die seat bodies are separated from each other, reducing the resistance of the forging body to move out of the outer shell;

[0024] S4: As the die base body moves, the upper die base contacts the push plate, the push plate is forced to move upward, and the second elastic telescopic rod is stretched, so that the push plate moves to the top side of the upper die base. As the die base body moves, the push plate scrapes and pushes off the oxidized debris remaining on the top side of the upper die base;

[0025] As the die base body continues to move, the upper die base abuts against the ejector pin, and the upper die base cannot continue to move with the lower die base. When the lower die base continues to move, the oxidized debris remaining on the top of the lower die base is scraped off by the upper die base and falls onto the base.

[0026] S5: Then the staff directly clamps and removes the forging body that has been moved out of the top of the outer shell through the clamp on the forklift. After the forging body is no longer placed on the support seat, the upper plate body is lifted up at one end under the push of the third elastic telescopic rod, so that the oxidized debris on the support seat slides down along the inclined surface, and the oxidized debris that falls on the base is moved out of the discharge chute along the conical surface.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The hot forging forming equipment and the use method of the large wind power main shaft forging can realize the quick separation of the main shaft forging from the main shaft die by setting a jacking hydraulic rod and driving the connecting rod assembly to work when the jacking hydraulic cylinder works. The connecting rod assembly drives each die base body to move away from each other, thereby reducing the resistance of the main shaft forging to separate from the main shaft die cavity. There is no need to use the iron column ejection method, so as to avoid the "point" collision of the bottom of the forged main shaft forging, thereby improving the forging quality of the main shaft forging;

[0029] 2. The hot forging forming equipment and the use method of the large wind turbine main shaft forging, when the connecting rod assembly drives the die base bodies to move away from each other, the oxidized debris remaining on the top wall of the upper die base and the lower die base is automatically cleaned, so as to avoid the accumulation of oxidized debris on the upper die base body, so that a large amount of oxidized debris adheres during the subsequent forging, thereby ensuring the forging quality, reducing the cleaning workload of the staff, improving the cleaning efficiency of the forging die, and thus improving the forging forming efficiency of the forging;

[0030] 3. The hot forging forming equipment and the use method of the large wind turbine main shaft forging are as follows: after the forging body is no longer placed on the support seat, the upper plate body is lifted up at one end under the push of the third elastic telescopic rod, so that the oxidized debris on the support seat slides down along the inclined surface to further reduce the residual oxidized debris in the main shaft mold, thereby ensuring the forging efficiency and forging quality of subsequent forgings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 It is a structural schematic diagram of the forging equipment of the present invention;

[0033] Figure 3 It is a schematic structural diagram of the outer shell of the present invention;

[0034] Figure 4 For the present invention Figure 3 The main view of

[0035] Figure 5 It is a schematic diagram of the structure inside the outer shell of the present invention;

[0036] Figure 6 For the present invention Figure 5 The main view of

[0037] Figure 7 It is a schematic diagram of the structure of the mold base body of the present invention when it is combined;

[0038] Figure 8 For the present invention Figure 7 A partial enlarged structural diagram of the middle part;

[0039] Fig. 9 For the present invention Figure 7 A schematic diagram of the partially enlarged structure of the middle B part;

[0040] Fig.10 It is a schematic diagram of the structure of the mold base body of the present invention when it is separated;

[0041] Fig.11 It is a schematic structural diagram of the support member of the present invention.

[0042] In the figure: 1. Forging equipment; 101. Fixed seat; 102. Forging table; 103. Guide rod; 104. Top seat; 105. Forging hydraulic cylinder; 106. Motor seat; 107. Lifting plate; 108. Forging seat; 2. Outer shell; 201. Base; 202. Annular shell; 203. Feeding chute; 204. Support column; 3. Support member; 301. Support plate; 302. Diagonal support plate; 4. Support seat; 401. Lower plate; 402, upper plate body; 403, third elastic telescopic rod; 5, lifting hydraulic cylinder; 501, piston rod; 6, supporting cross bar; 7, die base body; 701, lower die base; 702, side plate; 703, first elastic telescopic rod; 704, upper die base; 8, forging body; 9, conical seat; 901, swing rod; 902, connecting rod; 10, ejector rod; 1001, second elastic telescopic rod; 1002, movable rod; 1003, push plate. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] Example 1: Reference Figure 1-Figure 7 A hot forging device for a large wind turbine main shaft forging includes a forging device 1 and further includes:

[0046] An outer shell 2, the outer shell 2 is placed on the forging device 1;

[0047] A support member 3 is fixedly arranged in the outer shell 2, a support seat 4 is movably arranged on the support member 3, and a lifting hydraulic cylinder 5 for driving the support seat 4 to rise and fall is arranged at the bottom of the outer shell 2;

[0048] Support cross bars 6, which are provided in multiple groups and are slidably connected to the outer shell 2, and the ends of each group of support cross bars 6 are connected to the same die base body 7, and the multiple die base bodies 7 are surrounded to form a main shaft die cavity for forging the forging body 8, and the bottom of the die base body 7 is movably against the support base 4;

[0049] The piston rod 501 of the lifting hydraulic cylinder 5 is connected to a connecting rod assembly for driving the mold base body 7 to move laterally.

[0050] Specifically, after the forging body 8 is preliminarily forged into an axis shape by using the forging equipment 1, the outer shell 2 is then placed in the spindle mold cavity formed by a plurality of die base bodies 7, and the forging equipment 1 is controlled to work again to fill the spindle mold cavity with the forging body 8. After the forging of the forging body 8 is completed, the staff controls the jacking hydraulic cylinder 5 to work, and the piston rod 501 of the jacking hydraulic cylinder 5 lifts the forging body 8 through the support seat 4, so that the forging body 8 moves out of the outer shell 2, and the jacking hydraulic cylinder 5 drives the connecting rod assembly to work when the jacking hydraulic cylinder 5 works, so that the spindle forging can be quickly separated from the spindle mold, and the connecting rod assembly drives the die base bodies 7 to move away from each other, thereby reducing the resistance of the forging body 8 to separate from the spindle mold cavity, and there is no need to use the iron column ejection method to avoid the bottom of the forged forging body 8 being subjected to "point" collision after forging, thereby improving the forging quality of the spindle forging.

[0051] Example 2: Reference Figure 1-Figure 10 , a hot forging forming equipment for large wind turbine main shaft forgings, based on Example 1, further, the die base body 7 includes a lower die base 701 connected to the supporting cross bar 6, a side plate 702 fixed on the lower die base 701, a first elastic telescopic rod 703 fixed to the side plate 702, and an upper die base 704 connected to one end of the first elastic telescopic rod 703 away from the side plate 702, and the upper die base 704 slides on the lower die base 701.

[0052] Furthermore, the connecting rod assembly includes a conical seat 9 fixed on the piston rod 501 , a swing rod 901 is rotatably connected to the conical seat 9 via a pin, and a connecting rod 902 rotatably connected to the swing rod 901 is fixed on the lower die seat 701 .

[0053] Furthermore, a push rod 10 is fixedly provided on the inner wall of the outer shell 2 and is movably opposed to the upper mold base 704. A second elastic telescopic rod 1001 is fixedly provided on the push rod 10. A movable rod 1002 is fixedly provided on the top of the second elastic telescopic rod 1001. The end of the movable rod 1002 away from the second elastic telescopic rod 1001 is connected to a push plate 1003, and the push plate 1003 is movably opposed to the upper mold base 704.

[0054] Furthermore, matching extrusion slopes are provided on the push plate 1003 and the upper mold base 704. When the second elastic telescopic rod 1001 is not stretched, the top surface of the push plate 1003 and the top surface of the upper mold base 704 are in the same plane. When the second elastic telescopic rod 1001 is stretched, the bottom surface of the push plate 1003 is higher than or equal to the top surface of the upper mold base 704.

[0055] Specifically, after the forging of the forging body 8 is completed, the staff controls the lifting hydraulic cylinder 5 to work, and the piston rod 501 of the lifting hydraulic cylinder 5 lifts the forging body 8 through the support seat 4, so that the forging body 8 moves out of the outer shell 2. When the piston rod 501 of the lifting hydraulic cylinder 5 moves, it drives the swing rod 901 to move through the conical seat 9, so that the swing rod 901 drives the lower die seat 701 to move through the connecting rod 902. When the lower die seat 701 moves, it drives the upper die seat 704 to move synchronously through the first elastic telescopic rod 703, so that the multiple die seat bodies 7 are separated from each other, reducing the resistance of the forging body 8 to move out of the outer shell 2. With the movement of the die seat body 7, the upper die seat 704 abuts against the push plate 1003, and the push plate 1003 moves upward under force, and the second elastic telescopic rod 1001 is The push plate 1003 is stretched to move to the top side of the upper die seat 704. As the die seat body 7 moves, the push plate 1003 scrapes and pushes off the oxidized debris remaining on the top side of the upper die seat 704. As the die seat body 7 continues to move, the upper die seat 704 abuts against the push rod 10, and the upper die seat 704 cannot continue to move with the lower die seat 701. When the lower die seat 701 continues to move, the oxidized debris remaining on the top of the lower die seat 701 is scraped off by the upper die seat 704 and falls on the base 201, avoiding the accumulation of oxidized debris on the outside and inside of the spindle die, so that a large amount of oxidized debris adheres during the subsequent forging of forgings, thereby ensuring the forging quality, reducing the cleaning workload of the staff, improving the cleaning efficiency of the spindle die, and further improving the forging molding efficiency of the forgings.

[0056] Example 3: Reference Figure 5 , Figure 7 , Figure 8 , Fig.10 and Fig.11 , a hot forging forming equipment for large wind turbine main shaft forgings, based on Example 2, further, the support member 3 includes a support plate 301 fixedly arranged in the outer shell 2 and a diagonal support plate 302 fixedly arranged between the support plate 301 and the inner wall of the outer shell 2.

[0057] Specifically, by providing the support plate 301 and the diagonal support plate 302, the support seat 4 and part of the die base body 7 can be supported, and the support seat 4 can cooperate with the support cross bar 6 to support the die base body 7, thereby improving the stability of the forging body 8 in the spindle die cavity during forging.

[0058] Example 4: Reference Figure 7 , Figure 8 and Fig.10, a hot forging forming equipment for large wind turbine main shaft forgings. On the basis of Example 3, further, the support seat 4 includes a lower plate body 401 fixedly connected to the piston rod 501 and an upper plate body 402 rotatably connected to the lower plate body 401 through a pin shaft, and a third elastic telescopic rod 403 is arranged between the upper plate body 402 and the lower plate body 401.

[0059] Furthermore, the outer shell 2 includes a base 201 and an annular shell 202, a feed chute 203 is provided between the base 201 and the annular shell 202, a support column 204 for connecting the base 201 and the annular shell 202 is fixed in the feed chute 203, and the top wall of the base 201 is set as a conical surface.

[0060] Specifically, after the forging of the forging body 8 in the spindle mold cavity is completed, the staff directly clamps and removes the forging body 8 that is moved out of the top of the outer shell 2 through the clamp on the forklift. After the forging body 8 is no longer placed on the support seat 4, the upper plate 402 is lifted up at one end under the push of the third elastic telescopic rod 403, so that the oxidized debris on the support seat 4 slides down along the inclined surface, and the oxidized debris that falls on the base 201 is moved out from the discharge chute 203 along the conical surface, reducing the residual oxidized debris in the spindle mold, reducing the cleaning workload of the staff, improving the cleaning efficiency and cleaning effect of the oxidized debris of the spindle mold, and ensuring the forging efficiency and forging quality of subsequent forgings.

[0061] Example 4: Reference Figure 1 and Figure 2 , a hot forging forming equipment for large wind turbine main shaft forgings. On the basis of Example 3, further, the forging equipment 1 includes a fixed seat 101, a forging table 102 fixed on the fixed seat 101, a guide rod 103 fixed at the four corners of the fixed seat 101, a top seat 104 connected to the top of the guide rod 103, a forging hydraulic cylinder 105 fixed on the top seat 104, a motor seat 106 connected to the lower end of the forging hydraulic cylinder 105, a lifting plate 107 fixed to the motor seat 106 and sliding on the guide rod 103, and a forging seat 108 connected to the motor output shaft in the motor seat 106 and rotating on the lower side of the lifting plate 107, and the outer shell 2 is placed on the forging table 102.

[0062] Specifically, when the forging equipment 1 is working, the forging hydraulic cylinder 105 drives the lifting plate 107 and the forging seat 108 to move downward. During this process, the motor in the motor seat 106 controls the forging seat 108 to rotate, thereby realizing the forging work on the forging body 8 on the forging table 102.

[0063] The present invention also discloses a method for using a hot forging forming device for a large wind turbine main shaft forging, comprising the following steps:

[0064] S1: After the forging body 8 is placed on the forging table 102 and preliminarily forged into an axis shape using the forging equipment 1, the outer shell 2 is then placed on the forging table 102, and the axis-shaped forging body 8 is placed in a main shaft mold cavity surrounded by a plurality of die base bodies 7;

[0065] S2: Control the forging equipment 1 to work again, and the forging hydraulic cylinder 105 drives the lifting plate 107 and the forging seat 108 to move downward. During this process, the motor in the motor seat 106 controls the forging seat 108 to rotate, so as to realize the forging work on the forging body 8 in the spindle die cavity, so that the forging body 8 fills the spindle die cavity;

[0066] S3: After the forging of the forging body 8 is completed, the staff controls the lifting hydraulic cylinder 5 to work, and the piston rod 501 of the lifting hydraulic cylinder 5 lifts the forging body 8 through the support seat 4, so that the forging body 8 moves out of the outer shell 2;

[0067] When the piston rod 501 of the lifting hydraulic cylinder 5 moves, the swing rod 901 is driven to move through the conical seat 9, so that the swing rod 901 drives the lower die seat 701 to move through the connecting rod 902. When the lower die seat 701 moves, the upper die seat 704 is driven to move synchronously through the first elastic telescopic rod 703, so that the multiple die seat bodies 7 are separated from each other, reducing the resistance of the forging body 8 to move out of the outer shell 2;

[0068] S4: As the die base body 7 moves, the upper die base 704 abuts against the push plate 1003, the push plate 1003 is forced to move upward, and the second elastic telescopic rod 1001 is stretched, so that the push plate 1003 moves to the top side of the upper die base 704. As the die base body 7 moves, the push plate 1003 scrapes and pushes off the oxidized debris remaining on the top side of the upper die base 704;

[0069] As the die base body 7 continues to move, the upper die base 704 abuts against the ejector pin 10, and the upper die base 704 cannot continue to move with the lower die base 701. When the lower die base 701 continues to move, the oxidized debris remaining on the top of the lower die base 701 is scraped off by the upper die base 704 and falls onto the base 201.

[0070] S5: Then the staff directly uses the clamp on the forklift to clamp and remove the forging body 8 that has been moved out of the top of the outer shell 2. After the forging body 8 is no longer placed on the support seat 4, the upper plate body 402 is lifted up at one end under the push of the third elastic telescopic rod 403, so that the oxidized debris on the support seat 4 slides down along the inclined surface, and the oxidized debris that falls on the base 201 is moved out from the discharge chute 203 along the conical surface.

[0071] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hot forging equipment for large wind turbine main shaft forgings, comprising a forging equipment (1), characterized in that: Also includes: An outer shell (2), the outer shell (2) being placed on the forging device (1); A support member (3), the support member (3) being fixedly arranged in the outer shell (2), a support seat (4) being movably arranged on the support member (3), and a lifting hydraulic cylinder (5) for driving the support seat (4) to rise and fall being arranged at the bottom of the outer shell (2); Support cross bars (6), wherein the support cross bars (6) are provided in a plurality of groups and are slidably connected to the outer shell (2), the ends of each group of the support cross bars (6) are connected to the same die base body (7), the plurality of die base bodies (7) are enclosed to form a main shaft die cavity for forging a forging body (8), and the bottom of the die base body (7) is movably abutted against the support base (4); The piston rod (501) of the lifting hydraulic cylinder (5) is connected to a connecting rod assembly for driving the die base body (7) to move laterally; the die base body (7) comprises a lower die base (701) connected to the supporting cross bar (6), a side plate (702) fixedly mounted on the lower die base (701), a first elastic telescopic rod (703) fixedly mounted on the side plate (702), and an upper die base (704) connected to an end of the first elastic telescopic rod (703) away from the side plate (702), and the upper die base (704) slides on the lower die base (701); the connecting rod assembly comprises a conical seat (9) fixedly mounted on the piston rod (501), a swing rod (901) being rotatably connected to the conical seat (9) via a pin shaft, and a connecting rod (902) rotatably connected to the swing rod (901) is fixedly mounted on the lower die base (701); The inner wall of the outer shell (2) is fixedly provided with a push rod (10) that is movably opposed to the upper mold base (704); a second elastic telescopic rod (1001) is fixedly provided on the push rod (10); a movable rod (1002) is fixedly provided on the top of the second elastic telescopic rod (1001); an end of the movable rod (1002) away from the second elastic telescopic rod (1001) is connected to a push plate (1003); the push plate (1003) is movably opposed to the upper mold base (704); The support seat (4) comprises a lower plate body (401) fixedly connected to the piston rod (501) and an upper plate body (402) rotatably connected to the lower plate body (401) via a pin shaft, and a third elastic telescopic rod (403) is provided between the upper plate body (402) and the lower plate body (401); The push plate (1003) and the upper die seat (704) are provided with matching extrusion inclined surfaces. When the second elastic telescopic rod (1001) is not stretched, the top surface of the push plate (1003) and the top surface of the upper die seat (704) are in the same plane. When the second elastic telescopic rod (1001) is stretched, the bottom surface of the push plate (1003) is higher than or equal to the top surface of the upper die seat (704). The support member (3) comprises a support plate (301) fixedly arranged in the outer shell (2), and a diagonal support plate (302) fixedly arranged between the support plate (301) and the inner wall of the outer shell (2).

2. The hot forging equipment for large wind turbine main shaft forgings according to claim 1 is characterized in that: The outer shell (2) comprises a base (201) and an annular shell (202); a material discharge chute (203) is provided between the base (201) and the annular shell (202); a support column (204) for connecting the base (201) and the annular shell (202) is fixedly provided in the material discharge chute (203); and the top wall of the base (201) is provided as a conical surface.

3. The hot forging equipment for large wind turbine main shaft forgings according to claim 2, characterized in that: The forging equipment (1) comprises a fixed seat (101), a forging table (102) fixed on the fixed seat (101), a guide rod (103) fixed at four corners of the fixed seat (101), a top seat (104) connected to the top of the guide rod (103), a forging hydraulic cylinder (105) fixed on the top seat (104), a motor seat (106) connected to the lower end of the forging hydraulic cylinder (105), a lifting plate (107) fixed to the motor seat (106) and sliding on the guide rod (103), and a forging seat (108) connected to the motor output shaft in the motor seat (106) and rotating on the lower side of the lifting plate (107), and the outer shell (2) is placed on the forging table (102).

4. A method for using the hot forging equipment for large wind turbine main shaft forgings according to claim 3, characterized in that: The following steps are involved: S1: placing a forging body (8) on a forging table (102) and using a forging device (1) to preliminarily forge it into an axis shape, then placing an outer shell (2) on the forging table (102), and placing the axis-shaped forging body (8) in a main axis mold cavity formed by a plurality of die base bodies (7); S2: Controlling the forging equipment (1) to work again, the forging hydraulic cylinder (105) drives the lifting plate (107) and the forging seat (108) to move downward, during which the motor in the motor seat (106) controls the forging seat (108) to rotate, thereby achieving forging of the forging body (8) in the spindle die cavity, so that the forging body (8) fills the spindle die cavity; S3: After the forging of the forging body (8) is completed, the staff controls the lifting hydraulic cylinder (5) to work, and the piston rod (501) of the lifting hydraulic cylinder (5) lifts the forging body (8) through the support seat (4), so that the forging body (8) moves out of the outer shell (2); When the piston rod (501) of the lifting hydraulic cylinder (5) moves, the swing rod (901) is driven to move through the conical seat (9), so that the swing rod (901) drives the lower die seat (701) to move through the connecting rod (902), and when the lower die seat (701) moves, the upper die seat (704) is driven to move synchronously through the first elastic telescopic rod (703), so that the multiple die seat bodies (7) are moved away from each other, thereby reducing the resistance of the forging body (8) to move out of the outer shell (2); S4: As the mold base body (7) moves, the upper mold base (704) abuts against the push plate (1003), the push plate (1003) is forced to move upward, and the second elastic telescopic rod (1001) is stretched, so that the push plate (1003) moves to the top side of the upper mold base (704). As the mold base body (7) moves, the push plate (1003) scrapes and pushes away the oxidized debris remaining on the top side of the upper mold base (704); As the die base body (7) continues to move, the upper die base (704) abuts against the ejector pin (10), and the upper die base (704) cannot continue to move with the lower die base (701). When the lower die base (701) continues to move, the oxidized debris remaining on the top of the lower die base (701) is scraped off by the upper die base (704) and falls onto the base (201); S5: The staff then directly picks up and removes the forging body (8) that has been removed from the top of the outer shell (2) using the clamp on the forklift. After the forging body (8) is no longer placed on the support seat (4), the upper plate (402) is lifted up at one end under the push of the third elastic telescopic rod (403), so that the oxidized debris on the support seat (4) slides down along the inclined surface, and the oxidized debris that falls on the base (201) is moved out of the discharge chute (203) along the conical surface.

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