A forging device for a gear ring

Abstract

The application discloses a kind of forging device of gear ring, including base, the upper portion of base is connected with support frame, support frame upper portion is provided with hydraulic cylinder one, the lower end of the piston rod of hydraulic cylinder one is connected with pressure rod, the upper portion of base is connected with support column, support column upper portion is connected with support plate, support plate upper portion is fixedly installed with bottom die, support column side is connected with support arm, support arm is rotatably provided with turntable, turntable is located at the outer periphery of support plate, the lower portion of turntable is connected with driven gear, the upper portion of base is provided with hydraulic cylinder, the piston rod of hydraulic cylinder is connected with jacking rod, the left and right positions of support plate upper portion are each provided with one moving mechanism one, moving mechanism one is installed with side mould one, the front and rear positions of support plate upper portion are each provided with one moving mechanism two, moving mechanism two is installed with side mould two.The application is forged by adjusting the use of two side moulds to different shapes of gear ring.

Description

Technical Field

[0001] This invention relates to the field of forging technology, and more specifically, to a forging apparatus for a toothed ring. Background Technology

[0002] Forging is a processing method that uses forging machinery to apply pressure to a metal billet, causing it to undergo plastic deformation to obtain forgings with specific mechanical properties, shapes, and dimensions. Forging can eliminate defects such as casting porosity that occur during the smelting process, optimize the microstructure, and, because it preserves the complete metal flow lines, the mechanical properties of forgings are generally superior to those of castings made of the same material. Existing forging equipment typically only has one set of side dies. When forging a different type of gear ring, the original side die must be removed and a new one installed, a process that is time-consuming and impacts production efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a forging device for toothed rings, which can forge toothed rings of different shapes by adjusting the use of two side dies.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This invention discloses a forging apparatus for gear rings, comprising a base, a support frame connected to the upper part of the base, a hydraulic cylinder I mounted on the upper part of the support frame, a pressure rod connected to the lower end of the piston rod of the hydraulic cylinder I, a support column connected to the upper part of the base, a support plate connected to the upper part of the support column, a bottom mold fixedly mounted on the upper part of the support plate, a support arm connected to the side of the support column, a turntable rotatably mounted on the support arm, the turntable being located on the outer periphery of the support plate, a driven gear connected to the lower part of the turntable, a hydraulic cylinder mounted on the upper part of the base, a lifting rod connected to the piston rod of the hydraulic cylinder, a moving mechanism I mounted on the left and right positions of the upper part of the support plate, a side mold I mounted on the moving mechanism I, and a moving mechanism II mounted on the front and rear positions of the upper part of the support plate, a driving mechanism mounted on the moving mechanism II, and a driving mechanism mounted on the base, the driving mechanism being able to cooperate with the driven gear, the moving mechanism I, and the moving mechanism II respectively to achieve driving.

[0006] Furthermore, the moving mechanism includes a lead screw rotatably mounted on a turntable, a lead screw nut mounted on the lead screw, a side mold fixedly connected to the lead screw nut, a driven wheel connected to the outer end of the lead screw, a rotating frame mounted below the turntable, a drive shaft rotatably mounted on the rotating frame, a drive wheel connected to the outer end of the drive shaft, a drive belt connected between the drive wheel and the driven wheel, a drive bevel gear connected to the inner end of the drive shaft, a driving bevel gear rotatably mounted at the lower end of the turntable, the drive bevel gear meshing with the driving bevel gear, and a gear ring mounted on the inner side of the driving bevel gear.

[0007] Furthermore, the second moving mechanism includes a lead screw 2 rotatably mounted on a turntable, a lead screw nut 2 mounted on the lead screw 2, a side mold 2 fixedly connected to a drive bevel gear 1, a driven wheel 2 connected to the outer end of the lead screw 2, a rotating frame 2 mounted below the turntable, a transmission shaft 2 rotatably mounted on the rotating frame 2, a transmission wheel 2 connected to the outer end of the transmission shaft 2, a transmission belt 2 connected between the transmission wheel 2 and the driven wheel 2, a transmission bevel gear 2 connected to the inner end of the transmission shaft 2, a drive bevel gear 2 rotatably mounted at the lower end of the turntable, the transmission bevel gear 2 meshing with the drive bevel gear 2, and a toothed ring mounted on the inner side of the drive bevel gear 2.

[0008] Furthermore, a mounting bracket is provided at the lower part of the turntable, and the second drive bevel gear and the first drive bevel gear are rotatably mounted below the turntable via the mounting bracket.

[0009] Furthermore, the mounting bracket includes a connecting rod, the top of which is connected to the lower end of the turntable. The second drive bevel gear and the mounting bracket have a mounting groove, and a support ring is provided in the mounting groove. The second drive bevel gear and the mounting bracket have a connecting notch located above the mounting groove. The lower end of the connecting rod passes through the connecting notch and extends into the mounting groove. The lower end of the connecting rod is connected to the upper end of the support ring. Ball bearings are provided on the outer side, inner side, and upper part of the support ring.

[0010] Furthermore, a limiting groove is provided in the drive bevel gear 2 and drive bevel gear 1 at the position below the mounting groove. The limiting groove is connected to the mounting groove. Several stop bars 1 are provided at the bottom of the limiting groove. A hydraulic cylinder 5 is provided in the connecting rod. The lower end of the piston rod of the hydraulic cylinder 5 is connected to a limiting block. Several stop bars 2 are provided at the bottom of the limiting block.

[0011] Furthermore, one of the driving bevel gears, the second one, is located above the other, and the outer diameter of one of the driving bevel gears, the second one, is larger than the other.

[0012] Furthermore, the drive mechanism includes a lead screw seat mounted on the base, a lead screw motor mounted on the lead screw seat, a lead screw three connected to the lead screw motor, a lead screw nut three mounted on the lead screw three, an mounting plate mounted on the upper part of the lead screw nut three, a hydraulic cylinder four mounted on the upper part of the mounting plate, a motor frame connected to the upper end of the piston rod of the hydraulic cylinder four, a drive motor mounted on the lower part of the motor frame, and a drive gear connected to the drive motor.

[0013] The beneficial effects of this invention are:

[0014] 1. By rotating the turntable, the positions of side mold one and side mold two can be changed, thereby changing the mold used to forge toothed rings of different shapes;

[0015] 2. The drive mechanism can not only drive the turntable to rotate, but also act on the first and second moving mechanisms to drive them to move the first or second side mold. This can reduce the layout of the drive equipment and reduce the purchase and maintenance costs of the drive equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a forging device for the toothed ring in this embodiment;

[0017] Figure 2 This is a top view of the turntable in this embodiment;

[0018] Figure 3 for Figure 2 AA section view;

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0020] Figure 5 for Figure 2 BB section view;

[0021] Figure 6 This is a schematic diagram of the installation of the feeding cylinder in this embodiment.

[0022] Reference numerals: 1. Base; 2. Support frame; 3. Hydraulic cylinder one; 4. Pressure rod; 5. Support column; 6. Support plate; 7. Bottom mold; 8. Hydraulic cylinder two; 9. Baffle; 10. Lifting rod; 11. Support rod; 12. Support seat; 13. Support block; 14. Hydraulic cylinder three; 15. Mounting block; 16. Guide wheel; 17. Winding motor; 18. Winding wheel; 19. Feeding cylinder; 20. Discharge port; 21. Guide rod; 22. Connecting block; 23. Tensioner; 24. Top plate; 25. Support arm; 26. Turntable; 27. Moving mechanism one; 28. Side mold one; 29. ​​Moving mechanism two; 30. Side mold two; 31. Screw seat; 32. Screw three; 33. Screw motor; 34. Screw nut three; 35. Mounting plate; 36. Hydraulic cylinder four; 37. Motor frame; 38. Drive motor; 39. Drive gear; 40. Driven gear. 41. Lead screw nut 42. Driven wheel 43. Rotating frame 44. Drive shaft 45. Drive wheel 46. Drive bevel gear 47. Drive belt 48. Drive bevel gear 2 49. Drive bevel gear 1 50. Mounting bracket 51. Lead screw 2 52. Lead screw nut 2 53. Driven wheel 2 54. Rotating frame 2 55. Drive shaft 2 56. Drive wheel 2 57. Drive bevel gear 2 58. Drive belt 2 59. Planar thrust bearing 60. Column 1 61. Column 2 62. Sleeve 63. Crossbar 64. Connecting rod 65. Support ring 66. Connecting notch 67. Mounting groove 68. Limiting groove 69. Stop bar 1 70. Hydraulic cylinder 5 71. Limiting block 72. Stop bar 2 73. Hydraulic cylinder 6 74. Stop block 75. Ball bearing 76. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] As attached Figure 1 - Appendix Figure 6 As shown, a forging device for a gear ring includes a base 1, a support frame 2 connected to the upper part of the base 1, a hydraulic cylinder 3 mounted on the upper part of the support frame 2, a pressure rod 4 connected to the lower end of the piston rod of the hydraulic cylinder 3, a support column 5 connected to the upper part of the base 1, a support plate 6 connected to the upper part of the support column 5, a bottom mold 7 fixedly mounted on the upper part of the support plate 6, a support arm 25 connected to the side of the support column 5, a turntable 26 rotatably mounted on the support arm 25, an annular groove formed at the lower part of the turntable 26, a planar thrust bearing 60 installed in the annular groove, and the planar thrust bearing 60 also mounted on the upper end of the support arm 25. Several support rods 11 are connected to the upper part of the base 1, and a support seat 12 is connected to the upper part of the support rods 11. The support seat 12 has an L-shaped cross-section, and the outer side of the turntable 26 is located on the support seat 12, which supports the turntable 26 when it rotates. A hydraulic cylinder 8 is installed on the upper part of the base 1. A lifting rod 10 is connected to the piston rod of the hydraulic cylinder 8. A baffle 9 is installed on the lifting rod 10. The lifting rod passes through the support plate 6 and the bottom mold 7. A turntable 26 is located on the outer periphery of the support plate 6. A driven gear 40 is connected to the lower part of the turntable 26. A moving mechanism 27 is installed on the left and right sides of the upper part of the support plate 6. A moving mechanism 29 is installed on the front and rear sides of the upper part of the support plate 6.

[0025] As attached Figure 3As shown, the device also includes a drive mechanism, which can cooperate with the driven gear 40, the first moving mechanism 27, and the second moving mechanism 29 to achieve drive. The drive mechanism includes a lead screw seat 31 mounted on the base 1, a lead screw motor 33 mounted on the lead screw seat 31, a lead screw three 32 driven by the lead screw motor 33, a lead screw nut three 34 mounted on the lead screw three 32, a mounting plate 35 mounted on the upper part of the lead screw nut three 34, a hydraulic cylinder four 36 mounted on the upper part of the mounting plate 35, a motor frame 37 connected to the upper end of the piston rod of the hydraulic cylinder four 36, a drive motor 38 mounted on the lower part of the motor frame 37, and a drive gear 39 driven by the drive motor 38. The lead screw motor 33 drives the lead screw 32 to rotate. The forward and reverse rotation of the lead screw 32 drives the lead screw nut 34 to move left and right, thereby adjusting the horizontal position of the drive gear 39. The hydraulic cylinder 4 36 controls the extension and retraction of its piston rod to drive the motor frame 37 to rise and fall, thereby adjusting the vertical position of the drive gear 39, so that the drive gear 39 can cooperate and transmit power with the driven gear 40, the first moving mechanism 27, and the second moving mechanism 29 respectively. When the drive gear 39 meshes with the driven gear 40, the drive gear 39 drives the driven gear 40 to rotate, thereby driving the turntable 26 to rotate.

[0026] As attached Figure 2 , 3 As shown, the moving mechanism 27 includes a lead screw 41 rotatably mounted on a turntable 26, a lead screw nut 42 mounted on the lead screw 41, a side mold 28 fixedly connected to the lead screw nut 42, a driven wheel 43 connected to the outer end of the lead screw 41, a rotating frame 44 mounted below the turntable 26, a drive shaft 45 rotatably mounted on the rotating frame 44, a drive wheel 46 connected to the outer end of the drive shaft 45, a drive belt 48 connected between the drive wheel 46 and the driven wheel 43, a drive bevel gear 47 connected to the inner end of the drive shaft 45, a drive bevel gear 50 rotatably mounted at the lower end of the turntable 26, the drive bevel gear 47 meshing with the drive bevel gear 50, and a gear ring mounted on the inner side of the drive bevel gear 50. The drive gear 39 meshes with the inner ring gear of the drive bevel gear 50. The rotation of the drive gear 39 drives the drive bevel gear 50 to rotate. The drive bevel gear 50 then drives the transmission bevel gear 47 to rotate. The transmission bevel gear 47 drives the transmission wheel 46 to rotate through the transmission shaft 45. The transmission wheel 46 drives the driven wheel 43 to rotate through the transmission belt 48, which in turn drives the lead screw 41 to rotate. This, in turn, drives the side mold 28 to move through the lead screw nut 42, achieving relative or opposite movement of the two side molds 28, thus realizing mold opening or closing.

[0027] As attached Figure 2 , 5As shown, the second moving mechanism 29 includes a second lead screw 52 rotatably mounted on a turntable 26, a second lead screw nut 53 mounted on the second lead screw 52, ​​a second side mold 30 fixedly connected to a first driving bevel gear 50, a driven wheel 54 connected to the outer end of the second lead screw 52, ​​a second rotating frame 55 mounted below the turntable 26, a second transmission shaft 56 rotatably mounted on the second rotating frame 55, a second transmission wheel 57 connected to the outer end of the second transmission shaft 56, a second transmission belt 59 connected between the second transmission wheel 57 and the driven wheel 54, a second transmission bevel gear 58 connected to the inner end of the second transmission shaft 56, a second driving bevel gear 49 rotatably mounted at the lower end of the turntable 26, the second transmission bevel gear 58 meshing with the second driving bevel gear 49, and a toothed ring mounted on the inner side of the second driving bevel gear 49. The drive gear 39 meshes with the inner ring gear of the drive bevel gear 49. The rotation of the drive gear 39 drives the drive bevel gear 49 to rotate. The drive bevel gear 49 then drives the transmission bevel gear 58 to rotate. The transmission bevel gear 58 drives the transmission wheel 57 to rotate through the transmission shaft 56. The transmission wheel 57 drives the driven wheel 54 to rotate through the transmission belt 59, which in turn drives the lead screw 52 to rotate. This, in turn, drives the side mold 30 to move through the lead screw nut 53, achieving relative or opposite movement of the two side molds 30, thus realizing mold opening or closing.

[0028] One of the drive bevel gears 49 and 50 is located above the other, and the outer diameter of one of the drive bevel gears 49 and 50 is larger than that of the other, so that the drive bevel gears 49 and 50 do not interfere with each other.

[0029] Side mold 1 28 and side mold 2 30 are equipped with cooling water channels inside. Each side mold 1 28 and side mold 2 30 has a connector that connects to the internal cooling water channels, thereby connecting to an external cooling water circulation system. Since the connection point of the cooling water circulation system is fixed, the position of side mold 1 28 and side mold 2 30 can be changed by rotating the turntable 26, allowing either side mold 1 28 or side mold 2 30 in use to be connected to the cooling water circulation system.

[0030] As attached Figure 1 , 4As shown, a mounting bracket 51 is provided at the lower part of the turntable 26. The second drive bevel gear 49 and the first drive bevel gear 50 are rotatably mounted below the turntable 26 via the mounting bracket 51. The mounting bracket 51 includes a connecting rod 65, the top of which is connected to the lower end of the turntable 26. A mounting groove 68 is provided in the second drive bevel gear 49 and the mounting bracket 51. A support ring 66 is provided in the mounting groove 68. A connecting notch 67 is provided in the second drive bevel gear 49 and the mounting bracket 51 above the mounting groove 68. The lower end of the connecting rod 65 passes through the connecting notch 67 and extends into the mounting groove 68. The lower end of the connecting rod 65 is connected to the upper end of the support ring 66. Ball bearings 76 are provided on the outer side, inner side and upper part of the support ring 66. The second drive bevel gear 49 and the first drive bevel gear 50 are mounted on the lower part of the mounting bracket 51 by means of suspension. The setting of the ball 76 can reduce the friction between the ball 76 and the side wall of the mounting groove 68, so that the second drive bevel gear 49, the first drive bevel gear 50 and the mounting bracket 51 can maintain smooth rotation.

[0031] Since the drive bevel gear 50 and drive bevel gear 49 are rotatable relative to the turntable 26, when the drive mechanism drives the turntable 26 to rotate, the drive bevel gear 50 and drive bevel gear 49 may not be able to rotate synchronously with the turntable 26. This causes the drive bevel gear 50 and drive bevel gear 49 to act on the transmission bevel gear 47 and transmission bevel gear 58, resulting in displacement of the side mold 28 and the drive motor 38, affecting subsequent processing. By creating a limiting groove 69 in the drive bevel gear 49 and drive bevel gear 50 below the mounting groove 68, the limiting groove 69 is connected to the mounting groove 68. Several stop bars 70 are provided at the bottom of the limiting groove 69. A hydraulic cylinder 71 is installed in the connecting rod 65. The lower end of the piston rod of the hydraulic cylinder 71 is connected to a limiting block 72. Several stop bars 73 are provided at the bottom of the limiting block 72. When the turntable 26 needs to be rotated, the hydraulic cylinder 5 71 controls its piston rod to extend, pushing the limiting block 72 into the limiting groove 69. The stop bar 2 73 below the limiting block 72 can engage with the stop bar 1 70 at the bottom of the limiting groove 69, thereby limiting the relative displacement between the mounting bracket 51 and the drive bevel gear 1 50 and drive bevel gear 2 49, ensuring that the drive bevel gear 1 50, drive bevel gear 2 49 and the turntable 26 rotate synchronously.

[0032] The limiting block 72 is equipped with two hydraulic cylinders 74 arranged laterally. Each hydraulic cylinder 74 has a stop 75 connected to its piston rod, located on the outer and inner sides of the limiting block 72, respectively. After the limiting block 72 extends into the limiting groove 69, the hydraulic cylinder 74 controls its piston rod to extend, causing the stop 75 to extend out of the limiting block 72. This brings the stop 75 into contact with the inner and outer walls of the limiting groove 69, using friction to fix their relative positions. This further ensures synchronous rotation between the drive bevel gear 50, the drive bevel gear 49, and the turntable 26.

[0033] As attached Figure 1 , 6 As shown, the device also includes a feeding cylinder 19 disposed above the base 1. The bottom of the feeding cylinder 19 is provided with a discharge port 20, through which blanks are added to the bottom mold 7.

[0034] The support frame 2 includes two vertical columns 61 connected to the upper left side of the base 1 and two vertical columns 62 connected to the upper right side of the base 1. A top plate 24 is connected to the upper ends of the columns 61 and 62. A hydraulic cylinder 3 is installed in the middle of the top plate 24. The columns 61 and 62 are positioned symmetrically on the left and right sides. Mounting blocks 15 are installed on both columns 61 and 62. Guide rods 21 connect the two symmetrical mounting blocks 15 on the left and right sides, and the two symmetrical mounting blocks 15 on the front and back sides are connected... A crossbar 64 is connected to the feed cylinder 19. Sleeves 63 are connected to both the front and rear sides of the feed cylinder 19. The sleeves 63 are fitted onto the guide rod 21. A guide wheel 16 and a winding motor 17 are respectively provided on the outer side of the crossbar 64. The guide wheel 16 is rotatably installed outside the crossbar 64. The winding motor 17 drives and connects to the winding wheel 18. The winding wheel 18 is located below the guide wheel 16. Connecting blocks 22 are respectively connected to the left and right sides of the feed cylinder 19. A tensioner 23 is connected to the connecting block 22. The tensioner 23 passes around the guide wheel 16 and connects to the winding wheel 18.

[0035] The two take-up motors 17 work in tandem, and through the take-up rollers 18, they unwind and rewind the tension 23 accordingly, thereby enabling the left and right movement of the feed cylinder 19. The sleeve 63 and the guide rod 21 work together to enable the horizontal movement of the feed cylinder 19.

[0036] Mounting block 15 is fitted onto column 1 61 and column 2 62. Support block 13 is provided on column 1 61 and column 2 62, located below mounting block 15. Hydraulic cylinder 3 14 is provided on support block 13, and the upper end of the piston rod of hydraulic cylinder 3 14 is connected to the lower part of mounting block 15. By controlling the extension and retraction of the piston rod of hydraulic cylinder 3 14, mounting block 15 is raised and lowered, thereby adjusting the height of feeding cylinder 19. Lowering the height of feeding cylinder 19 allows the blank material in feeding cylinder 19 to fall more effectively onto bottom mold 7.

[0037] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A forging apparatus for a toothed ring, characterized in that, The system includes a base (1), a support frame (2) connected to the upper part of the base (1), a hydraulic cylinder (3) mounted on the upper part of the support frame (2), a pressure rod (4) connected to the lower end of the piston rod of the hydraulic cylinder (3), a support column (5) connected to the upper part of the base (1), a support plate (6) connected to the upper part of the support column (5), a bottom mold (7) fixedly mounted on the upper part of the support plate (6), a support arm (25) connected to the side of the support column (5), and a turntable (26) rotatably mounted on the support arm (25). Located on the outer periphery of the support plate (6), the turntable (26) is connected to a driven gear (40) at its lower part. A hydraulic cylinder (8) is provided on the upper part of the base (1). A lifting rod (10) is connected to the piston rod of the hydraulic cylinder (8). A moving mechanism (27) is provided on the left and right sides of the upper part of the support plate (6). A side mold (28) is installed on the moving mechanism (27). A moving mechanism (29) is provided on the front and rear sides of the upper part of the support plate (6). A side mold (30) is installed on the moving mechanism (29). A drive mechanism is provided on the seat (1), which can cooperate with the driven gear (40), the first moving mechanism (27), and the second moving mechanism (29) to achieve drive; the first moving mechanism (27) includes a lead screw (41) rotatably mounted on the turntable (26), a lead screw nut (42) is provided on the lead screw (41), the side mold (28) is fixedly connected to the lead screw nut (42), the outer end of the lead screw (41) is connected to the driven wheel (43), and a rotating frame is provided below the turntable (26). (44), a drive shaft (45) is rotatably mounted on the rotating frame (44), a drive wheel (46) is connected to the outer end of the drive shaft (45), a drive belt (48) is connected between the drive wheel (46) and the driven wheel (43), a drive bevel gear (47) is connected to the inner end of the drive shaft (45), a drive bevel gear (50) is rotatably mounted on the lower end of the turntable (26), the drive bevel gear (47) meshes with the drive bevel gear (50), and a toothed ring is provided on the inner side of the drive bevel gear (50);The second moving mechanism (29) includes a second lead screw (52) rotatably mounted on a turntable (26), a second lead screw nut (53) mounted on the second lead screw (52), a second side mold (30) fixedly connected to the second lead screw nut (53), a driven wheel (54) connected to the outer end of the second lead screw (52), a second rotating frame (55) mounted below the turntable (26), and a second drive shaft (54) rotatably mounted on the second rotating frame (55). 56), the outer end of the second transmission shaft (56) is connected to the second transmission wheel (57), the second transmission wheel (57) and the driven wheel (54) are connected by the second transmission belt (59), the inner end of the second transmission shaft (56) is connected to the second transmission bevel gear (58), the lower end of the turntable (26) is rotatably provided with the second drive bevel gear (49), the second transmission bevel gear (58) meshes with the second drive bevel gear (49), the second drive bevel gear (49) 9) A toothed ring is provided on the inner side; the driving mechanism includes a lead screw seat (31) provided on the base (1), a lead screw motor (33) provided on the lead screw seat (31), a lead screw three (32) driven and connected to the lead screw three (32), a lead screw nut three (34) provided on the lead screw three (32), an mounting plate (35) installed on the upper part of the lead screw nut three (34), a hydraulic cylinder four (36) provided on the upper part of the mounting plate (35), a motor frame (37) connected to the upper end of the piston rod of the hydraulic cylinder four (36), a drive motor (38) installed on the lower part of the motor frame (37), a drive motor (38) driven and connected to a drive gear (39), the drive gear (39) can mesh with the toothed ring on the inner side of the drive bevel gear one (50) or the toothed ring on the inner side of the drive bevel gear two (49), respectively driving the drive bevel gear one (50) or the drive bevel gear two (49) to rotate. ; 2. The forging apparatus for a gear ring according to claim 1, characterized in that, The turntable (26) is provided with a mounting bracket (51) at its lower part, and the second drive bevel gear (49) and the first drive bevel gear (50) are rotatably mounted below the turntable (26) via the mounting bracket (51).

3. The forging apparatus for a toothed ring according to claim 2, characterized in that, The mounting bracket (51) includes a connecting rod (65), the top of which is connected to the lower end of the turntable (26). The second drive bevel gear (49) and the mounting bracket (51) are provided with a mounting groove (68). The mounting groove (68) is provided with a support ring (66). The second drive bevel gear (49) and the mounting bracket (51) are provided with a connecting notch (67) located above the mounting groove (68). The lower end of the connecting rod (65) passes through the connecting notch (67) and extends into the mounting groove (68). The lower end of the connecting rod (65) is connected to the upper end of the support ring (66). The outer side, inner side and upper part of the support ring (66) are provided with balls (76).

4. The forging apparatus for a gear ring according to claim 3, characterized in that, The drive bevel gear 2 (49) and drive bevel gear 1 (50) are provided with a limiting groove (69) located below the mounting groove (68). The limiting groove (69) is connected to the mounting groove (68). Several stop bars 1 (70) are provided at the bottom of the limiting groove (69). A hydraulic cylinder 5 (71) is provided in the connecting rod (65). The lower end of the piston rod of the hydraulic cylinder 5 (71) is connected to a limiting block (72). Several stop bars 2 (73) are provided at the bottom of the limiting block (72).

5. The forging apparatus for a gear ring according to claim 1, characterized in that, One of the drive bevel gears, the second one (49) and the first one (50), is located above the other, and the outer diameter of one of the drive bevel gears, the second one (49) and the first one (50), is larger than that of the other.

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