Conical roller split mechanism, ring rolling mill and ring rolling mill assembling method

Abstract

The invention relates to the technical field of forging equipment, and provides a conical roller split mechanism, a ring rolling mill and a ring rolling mill assembly method.The conical roller split mechanism comprises a rack, a rotating shaft, connecting rods, conical rollers, hydraulic nuts and fasteners, and the rotating shaft is rotationally connected with the rack; the connecting rod penetrates through the rotating shaft; the conical roller and the hydraulic nut are oppositely arranged at the two ends of the connecting rod and are connected in a threaded screwing mode. The fastener is arranged on the hydraulic nut and used for limiting the stroke of the hydraulic nut. The conical roller and the hydraulic nut are arranged at the two ends of the connecting rod, so that the conical roller can be tensioned through the connecting rod by pressurizing the hydraulic nut, and the conical roller and the rotating shaft are fixed; meanwhile, the connecting rod is connected with the conical roller in a screwed mode through threads, the hydraulic nut serves as a pressurizing piece, the conical roller can be loosened after pressure relief, and therefore the conical roller can be disassembled conveniently, and the structure is simple; and the hydraulic nut of the structure is located on the outer side, overhauling and maintenance can be continued conveniently, and application convenience can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of forging equipment, and in particular to a tapered roller split mechanism, a ring rolling machine and a ring rolling machine assembly method. Background Art

[0002] In recent years, there are many domestic enterprises producing ring rolling machines. The development, research and production of ring rolling machines are gradually moving towards the international mainstream. Now the ring rolling technology has become one of the efficient, advanced and main process methods for the production of ring mechanical parts, and it is rapidly developing towards large, high-speed, precise and complex ring rolling technology. The ring rolling machines currently produced are mainly improved on the original basis. The main operation of the cone roller shaft is to extrude and rub the high-temperature workpiece to make the workpiece deform regularly. Due to its operating nature, the head of the cone roller shaft is easily worn. In the early stage, the cone surface of the longer cone roller shaft was constantly worn and needed to be repaired or replaced. There were problems such as difficult disassembly and high cost.

[0003] The utility model patent with the existing authorization announcement number CN205436614U discloses a tapered roller quick-change device for a ring rolling machine, including a shell, a main shaft and a tapered roller. The shell is connected with a main shaft that runs through the shell through bearings I, II and III. The right end of the main shaft extends out of the shell. A hydraulic cylinder is fixed to the right end of the main shaft. A tapered roller shaft cavity, a fixed cavity and a pull rod cavity are arranged in the main shaft from left to right. The tapered roller shaft of the tapered roller is arranged in the tapered roller shaft cavity and matches therewith. A pull pin is connected to the right end of the tapered roller shaft. A transition ring is arranged in the fixed cavity, which matches the fixed cavity. A clamp is arranged in the transition ring, which cooperates with the pull pin. The right end of the clamp is connected to a pull rod arranged in the pull rod cavity, and the right end of the pull rod is connected to the telescopic end of the hydraulic cylinder.

[0004] As in the above solution, the hydraulic cylinder drives the pull rod to move, and then the clamp is used to clamp the pull nail on the cone roller to achieve connection; however, in this solution, the internal structure is too complicated, especially when there is a problem with the clamp, it is not easy to find, and it is not convenient to maintain, which is disadvantageous in actual application. Summary of the invention

[0005] In view of this, the present invention proposes a cone roller split mechanism, a ring rolling machine and a ring rolling machine assembly method which are simple in structure and easy to disassemble, so as to solve the problems of complex structure and inconvenient maintenance of the existing cone roller assembly.

[0006] The technical solution of the present invention is achieved in this way:

[0007] On the one hand, the present invention provides a tapered roller split mechanism, comprising a frame, a rotating shaft, a connecting rod, a tapered roller, a hydraulic nut and a fastener, wherein:

[0008] The rotating shaft is rotatably connected to the frame;

[0009] The connecting rod passes through the rotating shaft;

[0010] The conical roller and the hydraulic nut are arranged at two ends of the connecting rod opposite to each other, and the conical roller is connected to the connecting rod by screwing;

[0011] The fastener is arranged on the hydraulic nut, and the fastener is used for limiting the stroke of the hydraulic nut.

[0012] On the basis of the above technical solution, preferably, the hydraulic nut includes a fixing block, a nut, a screw and a sealing ring, wherein:

[0013] The fixed block is connected to the rotating shaft;

[0014] The nut is connected to the fixing block;

[0015] The screw is inserted into the fixed block, the screw is threadedly matched with the nut, and the screw is sleeved with the connecting rod;

[0016] The screw rod is in a stepped shaft structure, two stepped surfaces of the screw rod are provided with sealing rings, and an oil filling port communicating with the gap between the two sealing rings is opened on the fixed block.

[0017] On the basis of the above technical solution, preferably, the fastener includes a first driving member and a push rod, wherein:

[0018] The first driving member is disposed at the end of the connecting rod;

[0019] The push rod is connected with the movable end of the first driving member, is parallel to the connecting rod, and passes through the nut.

[0020] On the basis of the above technical solution, preferably, the fastener further includes a threaded cylinder and a connecting frame, and the first driving member is a motor, wherein:

[0021] The threaded barrel is provided on the main shaft of the motor and on the ejector rod, and is threadedly matched;

[0022] Both ends of the connecting frame are connected to a threaded barrel respectively.

[0023] On the basis of the above technical solution, preferably, the fastener further includes a bearing seat, and a through groove is formed at the end of the connecting rod;

[0024] The first driving member and the bearing seat are embedded in the through slot, the bearing seat is rotationally matched with the movable end of the first driving member, and the side of the bearing seat away from the first driving member abuts against the slot wall of the through slot.

[0025] On the other hand, the present invention provides a ring rolling machine, comprising the above-mentioned tapered roller split mechanism, and also comprising a second driving member, the second driving member is arranged on the frame, and the second driving member is used to drive the connecting rod to rotate.

[0026] On the basis of the above technical solution, preferably, the second driving member includes a slide seat, a motor and a gear, wherein a tooth groove is provided on the connecting rod;

[0027] The slide seat is arranged on the frame;

[0028] The motor is slidably arranged on the slide seat;

[0029] The gear is arranged on the main shaft of the motor, and the gear passes through the rotating shaft and meshes with the tooth groove.

[0030] On the basis of the above technical solution, preferably, the connecting rod comprises a first rod body and a second rod body, wherein one end of the first rod body is connected to the cone roller, and the other end is rotatably connected to the second rod body;

[0031] One end of the second rod body away from the first rod body is connected to the hydraulic nut.

[0032] On the other hand, the present invention provides a ring rolling machine: comprising the above-mentioned tapered roller split mechanism.

[0033] In another aspect, the present invention provides an assembly method of the above-mentioned ring rolling machine, comprising the following steps:

[0034] S1. Insert the connecting rod into the rotating shaft;

[0035] S2. Adjust the motor so that the gear enters the shaft and meshes with the tooth groove of the connecting rod to achieve axial positioning of the connecting rod;

[0036] S3, plug the cone roller into the rotating shaft, and then drive the gear to rotate through the motor, thereby driving the connecting rod to rotate, so that the connecting rod and the cone roller are screwed together through the thread;

[0037] S4, slide the motor to make the gear separate from the shaft;

[0038] S5. Oil is supplied to the hydraulic nut through the oil filling port, and the screw is forced to rotate by pressure, thereby driving the connecting rod to move to tighten the cone roller;

[0039] S6. The first driving member is used to drive the push rod to move so that the push rod is pressed against the fixing block to achieve the stroke limit of the hydraulic nut.

[0040] The tapered roller split mechanism, ring rolling machine and ring rolling machine assembly method of the present invention have the following beneficial effects compared with the prior art:

[0041] (1) By arranging the conical roller and the hydraulic nut at both ends of the connecting rod, the conical roller can be tightened through the connecting rod by pressurizing the hydraulic nut, thereby achieving fixation with the rotating shaft; at the same time, the connecting rod and the conical roller are screwed together by threads, and the hydraulic nut is used as a pressurizing part. After the pressure is released, the conical roller will loosen, so that it is convenient to remove the conical roller, which has the advantages of simple structure and convenient disassembly and assembly; at the same time, in this structure, the hydraulic nut is located on the outside, which is convenient for inspection and maintenance, and can improve the convenience of application;

[0042] (2) In the hydraulic nut, the screw is arranged in a stepped shape and is provided with two sealing rings, so that oil injection and pressurization can be performed. After pressurization, the screw will drive the connecting rod to move, thereby tightening the cone roller; a fastener is also provided on the hydraulic nut, which can limit the hydraulic nut, thereby further ensuring the stability of the tightening structure;

[0043] (3) The fastener is provided with a first driving member and a push rod. After the hydraulic nut is adjusted into place, the first driving member can drive the push rod to tighten and fix it. In this way, even if the hydraulic nut or the oil supply pipeline suddenly releases pressure, the push rod can be used to support it to avoid impact problems, and the vibration of the connecting rod and the cone roller can be avoided to ensure the stability of the application.

[0044] (4) In the ring rolling machine of the present invention, the second driving member has a slide seat, a motor and a gear. When in use, one of them can drive the gear into the rotating shaft and engage with the tooth groove on the connecting rod, so that the connecting rod can be positioned, making the screwing of the conical roller and the connecting rod more convenient; at the same time, the motor can drive the connecting rod to rotate through the gear, thereby realizing the screwing with the conical roller thread, so as to realize automatic assembly and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 It is a three-dimensional diagram of the tapered roller split mechanism of the present invention;

[0047] Figure 2 It is a diagram showing the matching structure of the connecting rod and the second driving member of the tapered roller split mechanism of the present invention;

[0048] Figure 3 It is a structural diagram of the separation of the connecting rod and the second driving member of the tapered roller separation mechanism of the present invention;

[0049] Figure 4 It is an assembly structure diagram of the hydraulic nut and the fastener of the tapered roller split mechanism of the present invention;

[0050] Figure 5 It is a diagram of the adjustment structure of the fastener of the tapered roller split mechanism of the present invention;

[0051] Figure 6 A structural diagram showing a through groove formed on the connecting rod of the tapered roller split mechanism of the present invention;

[0052] In the figure: 1, frame; 2, rotating shaft; 3, connecting rod; 31, first rod body; 32, second rod body; 301, through groove; 302, tooth groove; 4, tapered roller; 5, hydraulic nut; 51, fixing block; 52, nut; 53, screw; 54, sealing ring; 501, oil filling port; 6, fastener; 61, first driving member; 62, push rod; 63, threaded cylinder; 64, connecting frame; 65, bearing seat; 7, second driving member; 71, slide seat; 72, motor; 73, gear. DETAILED DESCRIPTION

[0053] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] like Figures 1 to 6 As shown, the tapered roller split mechanism of the present invention includes a frame 1, a rotating shaft 2, a connecting rod 3, a tapered roller 4, a hydraulic nut 5 and a fastener 6.

[0055] like Figures 1 to 3 As shown, the rotating shaft 2 is rotatably connected to the frame 1; the connecting rod 3 passes through the rotating shaft 2; the tapered roller 4 and the hydraulic nut 5 are relatively arranged at both ends of the connecting rod 3, and the tapered roller 4 and the connecting rod 3 are screwed together by threads; the fastener 6 is arranged on the hydraulic nut 5, and the fastener 6 is used to limit the stroke of the hydraulic nut 5;

[0056] As in the above structure, during assembly, the connecting rod 3 is inserted into the rotating shaft 2, and the rotating shaft 2 passes through the hydraulic nut 5, and then the conical roller 4 is connected to the connecting rod 3, and then the hydraulic nut 5 is pressurized to tighten the connecting rod 3, so that the conical roller 4 can be stably engaged on the rotating shaft 2, thereby achieving connection;

[0057] In this structure, the connecting rod 3 and the tapered roller 4 are screwed together by threads, and the hydraulic nut 5 is used as a pressurizing member. After the pressure is released, the tapered roller 4 will loosen, so it is convenient to remove the tapered roller 4, which has the advantages of simple structure and convenient disassembly and assembly; at the same time, the hydraulic nut 5 of this structure is located on the outside, which is convenient for continued inspection and maintenance, and can improve the convenience of application;

[0058] Among them, a fastener 6 is provided on the hydraulic nut 5. After the hydraulic nut 5 is adjusted into place, the fastener 6 is used to limit the stroke of the hydraulic nut 5. In this way, even if the hydraulic nut 5 or the oil supply pipeline suddenly releases pressure, the limiting action of the fastener 6 can avoid impact problems and avoid vibration of the connecting rod 3 and the tapered roller 4, so as to ensure the stability of the application.

[0059] like Figure 4 and Figure 5 As shown, the hydraulic nut 5 includes a fixing block 51, a nut 52, a screw 53 and a sealing ring 54, wherein the fixing block 51 is connected to the rotating shaft 2; the nut 52 is connected to the fixing block 51; the screw 53 is inserted into the fixing block 51, the screw 53 and the nut 52 are threadedly matched, and the screw 53 is sleeved with the connecting rod 3; the screw 53 is a stepped shaft structure, and sealing rings 54 are arranged on two stepped surfaces of the screw 53, and an oil filling port 501 connecting the gap between the two sealing rings 54 is opened on the fixing block 51;

[0060] As in the above structure, in the hydraulic nut 5, the nut 52 is connected and fixed to the fixing block 51, the screw 53 is set in a stepped shape, and is provided with two sealing rings 54, so that after oil is injected into the hydraulic nut 5 through the oil injection port 501, the hydraulic oil pushes the screw 53 to rotate under the pressure, thereby driving the connecting rod 3 to move, and then the tapered roller 4 can be tightened to achieve the installation and fixation of the tapered roller 4;

[0061] Specifically, the connecting rod 3 is configured as a stepped shaft structure, so that the connecting rod 3 has a step against the screw rod 53, thereby transmitting the pulling force of the screw rod 53, and the connecting rod 3 and the screw rod 53 are rotationally matched;

[0062] Specifically, a tapered hole is provided at the end of the rotating shaft 2 to facilitate guiding the tapered roller 4 and positioning the tapered roller 4, thereby facilitating subsequent assembly.

[0063] like Figure 4 and Figure 5 As shown, the fastener 6 includes a first driving member 61 and a push rod 62, wherein the first driving member 61 is arranged at the end of the connecting rod 3; the push rod 62 is connected to the movable end of the first driving member 61, the push rod 62 is parallel to the connecting rod 3, and passes through the nut 52;

[0064] As in the above structure, the fastener 6 is used for limiting the position. Figure 5 In the structure shown, after the screw rod 53 tightens the connecting rod 3, the first driving member 61 drives the push rod 62 to move, so that the push rod 62 abuts against the fixed block 51, thereby ensuring the relative axial limitation of the fixed block 51, the screw rod 53 and the connecting rod 3. In this way, even if the hydraulic nut 5 or the oil supply pipeline suddenly releases pressure, the limiting effect of the push rod 62 can avoid the impact problem, and the vibration of the connecting rod 3 and the tapered roller 4 can be avoided, so as to ensure the stability of the application;

[0065] Specifically, even if the hydraulic nut 5 is depressurized, only the screw 53 will loosen, while the connecting rod 3 and the fastener 6 will not move, thereby ensuring structural stability.

[0066] like Figure 4 and Figure 5 As shown, the fastener 6 also includes a threaded barrel 63 and a connecting frame 64. The first driving member 61 is a motor, wherein one threaded barrel 63 is provided on the main shaft of the motor and one threaded barrel 63 is provided on the top rod 62, and the two ends of the connecting frame 64 are respectively connected to one threaded barrel 63.

[0067] As in the above structure, the fastener 6 is provided with a threaded barrel 63 and a connecting frame 64, and the motor main shaft and the push rod 62 are both provided with a threaded barrel 63. When the motor rotates, since a plurality of threaded barrels 63 are limited by the connecting frame 64, the motor main shaft and the threaded barrel 63 cooperate to drive other threaded barrels 63 and the push rod 62 to move through the connecting frame 64, and the push rod 62 and the threaded barrel 63 screwed together only make linear displacement, thereby abutting against the fixed block 51 to achieve the limit.

[0068] In this structure, the push rod 62 and the threaded barrel 63 are connected by threads to form an adjustable structure, so that the length of the push rod 62 inserted into the screw rod 53 can be easily adjusted to ensure that the push rod 62 has sufficient length to resist the fixing block 51, thereby ensuring the stability of the application;

[0069] Specifically, two push rods 62, corresponding threaded barrels 63 and connecting frames 64 are provided, and are connected to the threaded barrels 63 on the main shaft of the motor to ensure the stability of the structure.

[0070] like Figure 4 and Figure 6 As shown, the fastener 6 also includes a bearing seat 65, and a through slot 301 is formed at the end of the connecting rod 3; the first driving member 61 and the bearing seat 65 are embedded in the through slot 301, the bearing seat 65 is rotatably matched with the movable end of the first driving member 61, and the side of the bearing seat 65 away from the first driving member 61 abuts against the slot wall of the through slot 301;

[0071] As in the above structure, the first driving member 61 is a motor, and the bearing seat 65 is arranged on the main shaft of the motor, so that when the fastener 6 is subjected to force, the force will be transmitted to the connecting rod 3 through the bearing seat 65, thereby preventing the motor from being damaged;

[0072] Specifically, the through groove 301 is opened and penetrated along the radial direction of the connecting rod 3 , so as to facilitate the first driving member 61 and the bearing seat 65 to be embedded in the through groove 301 .

[0073] like Figure 1 to Figure 3As shown, the ring rolling machine of the present invention includes the above-mentioned tapered roller split mechanism, and also includes a second driving member 7, the second driving member 7 is arranged on the frame 1, and the second driving member 7 is used to drive the connecting rod 3 to rotate;

[0074] As in the above structure, in order to improve the convenience of connecting the tapered roller 4 and the connecting rod 3, a second driving member 7 is provided, so that the connecting rod 3 is driven to rotate by the second driving member 7, so that the end of the connecting rod 3 will be screwed together with the tapered roller 4, thereby realizing the connection; when the tapered roller 4 needs to be disassembled, the tapered roller 4 is lifted by a crane to keep the circumferential limit of the tapered roller 4, and then the connecting rod 3 can be rotated in the opposite direction.

[0075] like Figure 2 and Figure 3 As shown, the second driving member 7 includes a slide 71, a motor 72 and a gear 73, wherein a tooth groove 302 is provided on the connecting rod 3; the slide 71 is arranged on the frame 1; the motor 72 is slidably arranged on the slide 71; the gear 73 is arranged on the main shaft of the motor 72, and the gear 73 passes through the rotating shaft 2 and meshes with the tooth groove 302;

[0076] As in the above structure, the second driving member 7 is used to drive the connecting rod 3; in specific applications, the motor 72 moves by relying on the slide 71, and a connecting rod or a cylinder is provided to drive the motor 72 to move;

[0077] When the motor 72 moves, it drives the gear 73 to move, and the gear 73 enters the rotating shaft 2 and meshes with the tooth groove 302 on the connecting rod 3, which can axially limit the connecting rod 3 to ensure the stable position of the connecting rod 3; then, the cone roller 4 is installed, and the motor 72 and the gear 73 drive the connecting rod 3 to rotate, and the end of the connecting rod 3 is screwed and connected with the cone roller 4;

[0078] After the connecting rod 3 and the tapered roller 4 are connected, the motor 72 moves on the slide 71 to bring the gear 73 out of the rotating shaft 2, thereby avoiding interference with the rotation of the rotating shaft 2 during operation.

[0079] In some embodiments, the second driving member 7 is not provided. In this case, the connecting rod 3 is rotated by installing one end of the hydraulic nut 5 to disengage the connecting rod 3 from the tapered roller 4 .

[0080] like Figure 2 and Figure 3 As shown, the connecting rod 3 includes a first rod body 31 and a second rod body 32, wherein one end of the first rod body 31 is connected to the tapered roller 4, and the other end is rotatably connected to the second rod body 32; one end of the second rod body 32 away from the first rod body 31 is connected to the hydraulic nut 5;

[0081] As in the above structure, the connecting rod 3 is provided with two parts, namely, a first rod body 31 and a second rod body 32. Thus, when the second driving member 7 is working, only the first rod body 31 is driven to rotate, so as to be threadedly engaged with the tapered roller 4. Thus, the second rod body 32 does not need to rotate, which is beneficial to reduce friction.

[0082] Specifically, the second rod body 32 and the rotating shaft 2 are circumferentially limited.

[0083] The assembly method of the ring rolling machine of the present invention comprises the following steps:

[0084] S1, insert the connecting rod 3 into the rotating shaft 2;

[0085] S2, adjusting the motor 72 so that the gear 73 enters the rotating shaft 2 and meshes with the tooth groove 302 of the connecting rod 3 to achieve axial positioning of the connecting rod 3;

[0086] S3, plug the cone roller 4 into the rotating shaft 2, and then drive the gear 73 to rotate through the motor 72, thereby driving the connecting rod 3 to rotate, so that the connecting rod 3 and the cone roller 4 are screwed together;

[0087] S4, sliding the adjustment motor 72 to disengage the gear 73 from the rotating shaft 2;

[0088] S5, supply oil to the hydraulic nut 5 through the oil filling port 501, and use the pressure to force the screw 53 to rotate, thereby driving the connecting rod 3 to move, so as to tighten the tapered roller 4;

[0089] S6. The first driving member 61 drives the push rod 62 to move so that the push rod 62 presses against the fixing block 51 to achieve the stroke limit of the hydraulic nut 5.

[0090] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tapered roller split mechanism, characterized in that: It comprises a frame (1), a rotating shaft (2), a connecting rod (3), a tapered roller (4), a hydraulic nut (5) and a fastener (6), wherein: The rotating shaft (2) is rotatably connected to the frame (1); The connecting rod (3) passes through the rotating shaft (2); The conical roller (4) and the hydraulic nut (5) are arranged oppositely at two ends of the connecting rod (3), and the conical roller (4) and the connecting rod (3) are screwed together by means of a thread; The fastener (6) is arranged on the hydraulic nut (5), and the fastener (6) is used to limit the stroke of the hydraulic nut (5).

2. The tapered roller split mechanism according to claim 1, characterized in that: The hydraulic nut (5) comprises a fixing block (51), a nut (52), a screw rod (53) and a sealing ring (54), wherein: The fixed block (51) is connected to the rotating shaft (2); The nut (52) is connected to the fixing block (51); The screw rod (53) is inserted into the fixing block (51), the screw rod (53) is threadably matched with the nut (52), and the screw rod (53) is sleeved with the connecting rod (3); The screw rod (53) is in a stepped shaft structure, the sealing rings (54) are arranged on two stepped surfaces of the screw rod (53), and the fixing block (51) is provided with an oil filling port (501) communicating with the gap between the two sealing rings (54).

3. The tapered roller split mechanism according to claim 2, characterized in that: The fastener (6) comprises a first driving member (61) and a push rod (62), wherein: The first driving member (61) is arranged at the end of the connecting rod (3); The push rod (62) is connected to the movable end of the first driving member (61), the push rod (62) is parallel to the connecting rod (3), and passes through the nut (52).

4. The tapered roller split mechanism according to claim 3, characterized in that: The fastener (6) further comprises a threaded barrel (63) and a connecting frame (64), and the first driving member (61) is a motor, wherein: The threaded barrel (63) is provided on the main shaft of the motor and the push rod (62) respectively, and is threadedly matched; Both ends of the connecting frame (64) are connected to one of the threaded cylinders (63).

5. The tapered roller split mechanism according to claim 4, characterized in that: The fastener (6) further comprises a bearing seat (65), and a through groove (301) is formed at the end of the connecting rod (3); The first driving member (61) and the bearing seat (65) are embedded in the through groove (301), the bearing seat (65) is rotatably matched with the movable end of the first driving member (61), and the side of the bearing seat (65) away from the first driving member (61) abuts against the groove wall of the through groove (301).

6. A ring rolling machine, characterized in that: It comprises the tapered roller split mechanism as claimed in claim 5, and also comprises a second driving member (7), wherein the second driving member (7) is arranged on the frame (1), and the second driving member (7) is used to drive the connecting rod (3) to rotate.

7. The ring rolling machine according to claim 6, characterized in that: The second driving member (7) comprises a slide seat (71), a motor (72) and a gear (73), wherein: The connecting rod (3) is provided with a tooth groove (302); The slide seat (71) is arranged on the frame (1); The motor (72) is slidably arranged on the slide seat (71); The gear (73) is arranged on the main shaft of the motor (72), and the gear (73) passes through the rotating shaft (2) and meshes with the tooth groove (302).

8. The ring rolling machine according to claim 7, characterized in that: The connecting rod (3) comprises a first rod body (31) and a second rod body (32), wherein: One end of the first rod body (31) is connected to the tapered roller (4), and the other end is rotatably connected to the second rod body (32); One end of the second rod body (32) away from the first rod body (31) is connected to the hydraulic nut (5).

9. A ring rolling machine, characterized in that: It comprises the tapered roller split structure as described in any one of claims 1 to 5.

10. An assembly method for a ring rolling machine as claimed in claim 7 or 8, characterized in that: The following steps are involved: S1, inserting the connecting rod (3) into the rotating shaft (2); S2, adjusting the motor (72) so that the gear (73) enters the rotating shaft (2) and meshes with the tooth groove (302) of the connecting rod (3), thereby achieving axial positioning of the connecting rod (3); S3, plugging the tapered roller (4) into the rotating shaft (2), and then driving the gear (73) to rotate via the motor (72), thereby driving the connecting rod (3) to rotate, so that the connecting rod (3) and the tapered roller (4) are screwed together; S4, slidingly adjusting the motor (72) to make the gear (73) disengage from the rotating shaft (2); S5, supplying oil into the hydraulic nut (5) through the oil filling port (501), forcing the screw rod (53) to rotate by pressure, thereby driving the connecting rod (3) to move, so as to tighten the tapered roller (4); S6. The first driving member (61) drives the push rod (62) to move so that the push rod (62) presses against the fixing block (51) to achieve stroke limiting of the hydraulic nut (5).

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