A connecting structure between an extension shaft and an input shaft

Abstract

The present invention discloses a connection structure between an extension shaft and an input shaft, which relates to the technical field of shaft connection and includes a workbench. It further includes: a friction welding mechanism installed on the top of the workbench; the present invention installs an inner hole flash treatment mechanism and a flash anti-adhesion mechanism to reduce the contact connection area between the flash and the weld seam, thereby reducing the influence of the flash on the unfriction position, reducing the thickness of the connection between the flash and the shaft wall, improving the efficiency of flash treatment, treating the flash on the inner wall of the shaft after welding, ensuring the flatness of the shaft wall, and avoiding the unevenness of the flash causing uneven weight during the use of the hollow input shaft and the hollow extension shaft. During rotary friction welding, the inner walls of the hollow input shaft and the hollow extension shaft are supported by a collapse prevention mechanism and a strengthening anti-twist mechanism, reducing the possibility of collapse, and strengthening the inner wall of the shaft to improve the anti-twist strength of the shaft wall, avoiding the occurrence of inner wall distortion of the shaft due to strong friction.

Description

Technical Field

[0001] The present invention relates to the technical field of shaft connection, and particularly relates to a connection structure between an extension shaft and an input shaft. Background Art

[0002] The input shaft and the extension shaft are connected by friction welding. The principle of friction welding is to apply pressure to the welding positions of the two shafts, and drive one of the shafts to rotate rapidly during the pressure application, so that the two shafts generate friction. The rapid friction will melt and weld the contact positions of the hollow input shaft and the hollow extension shaft together. In the prior art, when welding two hollow shafts, during the strong friction process of the two hollow shafts, due to the hollow structure, the shaft walls will collapse and have twisted patterns due to pressure and torsional force, affecting the straightness and quality of the shaft connection. Therefore, it is necessary to improve the connection structure for the welding problem of hollow shafts. Summary of the Invention

[0003] The present invention provides a connection structure between an extension shaft and an input shaft to solve the above deficiencies in the prior art.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A connection structure between an extension shaft and an input shaft, including a workbench, further comprising:

[0006] A driving mechanism, which is connected to the friction welding mechanism, including a second fixing plate fixed on the top of the first fixing plate;

[0007] A collapse prevention mechanism, which is connected to the friction welding mechanism, including two support cylinders;

[0008] The collapse prevention mechanism further includes a fourth fixing plate fixed on the top of the second fixing plate. A circular plate is rotatably connected inside the fourth fixing plate. A double-section reciprocating threaded rod and a second guiding rod are rotatably connected inside the circular plate. A second bevel gear is fixed on the outer part of one end of the double-section reciprocating threaded rod. A first bevel gear is meshed on one side of the second bevel gear. A rotating shaft is fixed inside the first bevel gear. The rotating shaft is rotatably connected to the circular plate. A fourth one-way gear is fixed at the end of the rotating shaft away from the first bevel gear. A rack is meshed on the top of the fourth one-way gear. The rack is fixed to the housing of the clamping and rotating structure;

[0009] The collapse prevention mechanism further includes moving plates respectively threadedly sleeved on the two reciprocating threads of the double-section reciprocating threaded rod. The moving plates are sleeved on the outer part of the second guiding rod. Electromagnetic components are fixed on the circumferential walls of the moving plates. The two electromagnetic components are respectively magnetically connected to the two support cylinders;

[0010] The inner hole flash trimming mechanism, which is connected to the collapse prevention mechanism, includes two cutting rings, and flash contact surfaces are provided on one side of the two cutting rings facing each other;

[0011] The inner hole flash trimming mechanism further includes a sleeve fixed to the side of the circular plate away from the clamping and rotating structure. A one-way gear one is installed on the outer wall of the end of the sleeve away from the circular plate, and the one-way gear one meshes with the gear one;

[0012] An installation frame is fixed to the top of the second fixing plate. An internal gear ring is fixed to the inner wall of the installation frame. The internal teeth of the internal gear ring mesh with a one-way gear two, and the one-way gear two is fixed to one end of the double-section reciprocating threaded rod;

[0013] The two cutting rings are respectively fixed to one end of the two support cylinders close to each other.

[0014] Further, it further includes a friction welding mechanism, which is installed on the top of the workbench;

[0015] The friction welding mechanism includes a first fixing plate. A first motor is fixed to one side of the first fixing plate. A screw rod is fixed to the output end of the first motor. A clamping and rotating structure is sleeved on the external thread of the screw rod. Two guide rods one are fixed to one side of the first fixing plate, and the two guide rods one are sleeved inside the clamping and rotating structure. A clamping structure is fixed to the top of the workbench.

[0016] Further, a third fixing plate is fixed to the top of the second fixing plate. A second motor is fixed to one side of the third fixing plate. A gear one is fixed to the output end of the second motor.

[0017] Further, it further includes a flash anti-adhesion mechanism, which is connected to the collapse prevention mechanism;

[0018] The flash anti-adhesion mechanism includes a pipeline rotatably connected inside the circular plate. The pipeline is sleeved inside the sleeve. A rotary seal connector is installed at one end of the pipeline. The rotary seal connector is externally connected to a feeder. A plurality of nozzles are installed on the external of the other end of the pipeline. The pipeline is sleeved inside a moving plate close to the circular plate. A one-way gear three is installed on the outer wall of one end of the pipeline, and the one-way gear three meshes with the gear one.

[0019] Further, it further includes a strengthening anti-twisting mechanism, which is connected to the collapse prevention mechanism and includes a plurality of reinforcing plates;

[0020] The strengthening anti-twisting mechanism further includes a plurality of rod holes opened at one end of the two support cylinders away from each other. A limiting rod is sleeved inside the rod holes. A spring is sleeved on the external of the limiting rod. One end of the spring is fixedly connected to the inner wall of the rod hole;

[0021] One end of each of the plurality of limiting rods is fixed with a mounting ring, the other end of the spring is fixedly connected to the mounting ring, one side of the mounting ring is fixed with a mounting cylinder, a plurality of extrusion openings are formed in the mounting cylinder, and the reinforcing plate is sleeved inside the extrusion openings;

[0022] A plurality of fixing frames are fixed on the inner wall of the mounting cylinder, an electric push rod is fixed on the fixing frame, and the output end of the electric push rod is fixedly connected to the reinforcing plate.

[0023] Further, a controller is fixed on one side of the workbench, and the controller is electrically connected to the first motor, the second motor, the feeder, the electric push rod, the electromagnetic assembly, the clamping and rotating structure, and the clamping structure respectively.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. By performing slope treatment on the welding position of the input shaft and the extension shaft, the impact pressure is dispersed through the contact between the upper slope and the lower slope, and the collapse of the hollow shaft can be avoided;

[0026] 2. During rotary friction welding, the collapse prevention mechanism and the anti-twist strengthening mechanism support the inner walls of the hollow input shaft and the hollow extension shaft, reducing the possibility of collapse, strengthening the inner wall of the shaft, and improving the anti-twist strength of the shaft wall to avoid the occurrence of inner wall distortion of the shaft due to strong friction;

[0027] 3. By installing the inner hole flash treatment mechanism and the flash anti-adhesion mechanism, the contact connection area between the flash and the weld seam is reduced, thereby reducing the influence of the flash on the unfriction position, reducing the thickness of the connection between the flash and the shaft wall, improving the efficiency of flash treatment, and treating the flash on the inner wall of the shaft after welding to ensure the flatness of the shaft wall and avoid unevenness of the flash causing uneven weight during the use of the hollow input shaft and the hollow extension shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 FIG. is a schematic structural diagram of a first perspective of a connection structure between an extension shaft and an input shaft according to the present invention.

[0029] Figure 2 FIG. is a schematic structural diagram of a second perspective of a connection structure between an extension shaft and an input shaft according to the present invention.

[0030] Figure 3 FIG. is a schematic structural diagram of an inner hole flash treatment mechanism of a connection structure between an extension shaft and an input shaft according to the present invention.

[0031] Figure 4 FIG. is a schematic structural diagram of a collapse prevention mechanism of a connection structure between an extension shaft and an input shaft according to the present invention.

[0032] Figure 5 Schematic cross-sectional structure diagram of an extension shaft and an input shaft proposed by the present invention.

[0033] Figure 6 Schematic structure diagram of a strengthening anti-twisting mechanism of the connection structure between an extension shaft and an input shaft proposed by the present invention.

[0034] Figure 7 is Figure 5 Enlarged structure diagram at position A inside.

[0035] In the figure:

[0036] 1. Workbench; 2. Friction welding mechanism; 21. First fixing plate; 22. First motor; 23. Screw; 24. First guide rod; 25. Clamping and rotating structure; 26. Clamping structure; 3. Driving mechanism; 31. Second fixing plate; 32. Third fixing plate; 33. Second motor; 34. First gear; 4. Collapse prevention mechanism; 41. Fourth fixing plate; 42. Circular plate; 43. Double-section reciprocating threaded rod; 44. Second bevel gear; 45. Rotating shaft; 46. First bevel gear; 47. Fourth one-way gear; 48. Rack; 49. Second guide rod; 410. Moving plate; 411. Support cylinder; 412. Electromagnetic component; 5. Inner hole flash treatment mechanism; 51. Mounting frame; 52. Inner gear ring; 53. Second one-way gear; 54. Sleeve; 55. First one-way gear; 56. Cutting ring; 57. Flash contact surface; 6. Flash anti-sticking mechanism; 61. Pipe; 62. Sealing connector; 63. Sprayer; 64. Third one-way gear; 71. Hollow extension shaft; 72. First slope; 73. Hollow input shaft; 74. Second slope; 8. Strengthening anti-twisting mechanism; 81. Mounting cylinder; 82. Extrusion port; 83. Fixing frame; 84. Electric push rod; 85. Reinforcing plate; 86. Rod hole; 87. Spring; 88. Limit rod; 89. Mounting ring. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the accompanying 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 thus should not be construed as a limitation of the present invention.

[0039] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "a plurality of" is two or more, unless otherwise specifically defined. In addition, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention may be understood according to specific circumstances.

[0040] Example: Refer to Figures 1-7 : A connection structure between an extension shaft and an input shaft, including a workbench 1, and further including:

[0041] A friction welding mechanism 2, which is mounted on the top of the workbench 1;

[0042] A driving mechanism 3, which is connected to the friction welding mechanism 2;

[0043] A collapse prevention mechanism 4, which is connected to the friction welding mechanism 2 and includes two support cylinders 411;

[0044] An inner hole flash treatment mechanism 5, which is connected to the collapse prevention mechanism 4 and includes two cutting rings 56, and flash contact surfaces 57 are provided on one side of the two cutting rings 56 facing each other;

[0045] A flash anti-sticking mechanism 6, which is connected to the collapse prevention mechanism 4;

[0046] A strengthening anti-twisting mechanism 8, which is connected to the collapse prevention mechanism 4 and includes a plurality of strengthening plates 85.

[0047] The friction welding mechanism 2 includes a first fixing plate 21. A first motor 22 is fixed on one side of the first fixing plate 21. A screw 23 is fixed to the output end of the first motor 22. A clamping and rotating structure 25 is sleeved on the outer thread of the screw 23. The clamping and rotating structure 25 includes a housing, a rotating motor and a three-jaw clamping assembly. The rotating motor is fixed inside the housing. The rotating motor is connected to the three-jaw chuck assembly and drives the three-jaw chuck assembly to rotate. Two first guide rods 24 are fixed on one side of the first fixing plate 21. The two first guide rods 24 are sleeved inside the clamping and rotating structure 25. A clamping structure 26 is fixed on the top of the workbench 1. The clamping structure 26 includes two bases symmetrically fixed on the top of the workbench 1, and a hydraulic clamping assembly is arranged between the two bases.

[0048] The driving mechanism 3 includes a second fixing plate 31 fixed to the top of the first fixing plate 21. A third fixing plate 32 is fixed to the top of the second fixing plate 31. A second motor 33 is fixed to one side of the third fixing plate 32. A first gear 34 is fixed to the output end of the second motor 33.

[0049] The collapse prevention mechanism 4 further includes a fourth fixing plate 41 fixed to the top of the second fixing plate 31. A circular plate 42 is rotatably connected inside the fourth fixing plate 41. A double-section reciprocating threaded rod 43 and a second guiding rod 49 are rotatably connected inside the circular plate 42. A second bevel gear 44 is fixed to the outer part of one end of the double-section reciprocating threaded rod 43. A first bevel gear 46 is meshed with one side of the second bevel gear 44. A rotating shaft 45 is fixed inside the first bevel gear 46. The rotating shaft 45 is rotatably connected with the circular plate 42. A fourth one-way gear 47 is fixed to the end of the rotating shaft 45 away from the first bevel gear 46. A rack 48 is meshed with the top of the fourth one-way gear 47. The rack 48 is fixedly connected with the housing of the clamping and rotating structure 25.

[0050] Moving plates 410 are threadedly sleeved on the outer parts of the two reciprocating threads of the double-section reciprocating threaded rod 43. The moving plates 410 are sleeved on the outer part of the second guiding rod 49. Electromagnetic components 412 are fixed to the annular walls of the moving plates 410. The two electromagnetic components 412 are magnetically connected to the two support cylinders 411 respectively.

[0051] The inner hole flash treatment mechanism 5 further includes a sleeve 54 fixed to the side of the circular plate 42 away from the clamping and rotating structure 25. A first one-way gear 55 is installed on the outer wall of the end of the sleeve 54 away from the circular plate 42. The first one-way gear 55 is meshed with the first gear 34.

[0052] An installation frame 51 is fixed to the top of the second fixing plate 31. An internal gear ring 52 is fixed to the inner wall of the installation frame 51. An internal tooth of the internal gear ring 52 is meshed with a second one-way gear 53. The second one-way gear 53 is fixed to one end of the double-section reciprocating threaded rod 43.

[0053] Two cutting rings 56 are respectively fixed to the closer ends of the two support cylinders 411.

[0054] The flash anti-sticking mechanism 6 includes a pipeline 61 rotatably connected inside the circular plate 42. The pipeline 61 is sleeved inside the sleeve 54. A rotary seal connector 62 is installed at one end of the pipeline 61. The rotary seal connector 62 is externally connected to a feeder. A plurality of nozzles 63 are installed on the outer part of the other end of the pipeline 61. The pipeline 61 is sleeved inside the moving plate 410 close to the circular plate 42. A third one-way gear 64 is installed on the outer wall of one end of the pipeline 61. The third one-way gear 64 is meshed with the first gear 34.

[0055] The anti-twisting strengthening mechanism 8 further includes a plurality of rod holes 86 opened at the ends of the two support cylinders 411 away from each other. A limiting rod 88 is sleeved inside the rod hole 86, and a spring 87 is sleeved outside the limiting rod 88. One end of the spring 87 is fixedly connected to the inner wall of the rod hole 86;

[0056] One end of the plurality of limiting rods 88 is fixed with an installation ring 89. The other end of the spring 87 is fixedly connected to the installation ring 89. One side of the installation ring 89 is fixed with an installation cylinder 81. A plurality of extrusion openings 82 are opened on the installation cylinder 81. The strengthening plate 85 is sleeved inside the extrusion openings 82;

[0057] The inner wall of the installation cylinder 81 is fixed with a plurality of fixing frames 83. An electric push rod 84 is fixed on the fixing frames 83. The output end of the electric push rod 84 is fixedly connected to the strengthening plate 85.

[0058] A controller is fixed on one side of the workbench 1. The controller is electrically connected to the first motor 22, the second motor 33, the feeder, the electric push rod 84, the electromagnetic assembly 412, the clamping and rotating structure 25, and the clamping structure 26 respectively.

[0059] An input shaft applicable to the connection structure of the above-mentioned extension shaft and input shaft includes a hollow input shaft 73 clamped in the clamping and rotating structure 25. A second slope 74 is opened on the outer wall of one end of the hollow input shaft 73. The hollow input shaft 73 is sleeved outside the collapse prevention mechanism 4, the inner hole flash treatment mechanism 5, the flash anti-adhesion mechanism 6, and the anti-twisting strengthening mechanism 8. An extension shaft applicable to the connection structure of the above-mentioned extension shaft and input shaft includes a hollow extension shaft 71 clamped inside the clamping structure 26. A first slope 72 is opened on the inner wall of one end of the hollow extension shaft 71. The hollow extension shaft 71 is sleeved outside the collapse prevention mechanism 4, the inner hole flash treatment mechanism 5, the flash anti-adhesion mechanism 6, and the anti-twisting strengthening mechanism 8.

[0060] Working principle:

[0061] The controller controls the start of a plurality of electric push rods 84 to push the strengthening plate 85 into contact with the inner walls of the hollow input shaft 73 and the hollow extension shaft 71, providing strong support for them. When the hollow input shaft 73 and the hollow extension shaft 71 rotate, the support of the strengthening plate 85 on the shaft wall can increase the torque of the shaft wall to withstand rotational friction, avoiding the twisting of the shaft wall caused by the inability of the shaft wall to withstand the torque of rotational friction;

[0062] The second motor 33 is started to drive the first gear 34 to reverse. The reverse rotation direction of the first gear 34 meets the rotation direction of driving the pipeline 61 by the one-way gear 64. The pipeline 61 drives the nozzle 63 to rotate. The controller controls the feeder to inject oil into the pipeline 61, and then evenly sprays it onto the flash contact surface 57 through the rotation of the nozzle 63;

[0063] Start the clamping and rotating structure 25 to drive the hollow input shaft 73 to rotate rapidly. When the hollow input shaft 73 rotates, it drives the reinforcing plate 85 in contact with it to rotate. The reinforcing plate 85 drives the electric push rod 84 and the mounting cylinder 81 to rotate. After reaching the specified rotational speed, start the first motor 22 to drive the reciprocating screw 23 to rotate, so that the clamping and rotating structure 25 drives the hollow input shaft 73 to move, making the second slope 74 contact and rub against the first slope 72 to be heated. The design of the first slope 72 and the second slope 74 can increase the end face contact area between the hollow input shaft 73 and the hollow extension shaft 71, disperse the pressure and reduce the local stress concentration, making the welding more uniform. The pressure of the counterflush can be dispersed through the contact between the inclined surfaces, which can reduce the possibility of the collapse of the hollow shaft;

[0064] When the clamping and rotating structure 25 pushes the hollow input shaft 73 to move, it drives the rack 48 to move synchronously. The moving direction of the rack 48 satisfies the steering for the one-way gear four 47 to drive the rotating shaft 45 to rotate, so that the one-way gear four 47 drives the rotating shaft 45 and the bevel gear one 46 to rotate. The bevel gear one 46 drives the bevel gear two 44 and the double-section reciprocating threaded rod 43 to rotate. Although the rotating direction of the double-section reciprocating threaded rod 43 at this time drives the internal ratchet of the internal one-way gear two 53 to rotate, the rotating direction of the ratchet cannot drive the teeth of the one-way gear two 53 to rotate. Therefore, when the internal gear ring 52 limits the one-way gear two 53, the one-way gear two 53 cannot rotate. The rotation of the double-section reciprocating threaded rod 43 makes the two moving plates 410 move towards the clamping structure 26 at the same time, synchronously driving structures such as the support cylinder 411 and the cutting ring 56 to move. When the support cylinder 411 located in the hollow input shaft 73 moves, it drives the limit rod 88 to synchronously move out of the rod hole 86 and stretches the spring 87, while the support cylinder 411 in the hollow extension shaft 71 presses the limit rod 88 and the rod hole 86. The settings of the spring 87 and the limit rod 88 can ensure the strengthening of the shaft wall while also allowing the support cylinder 411 to have a certain amount of movement space. Since the weld between the hollow input shaft 73 and the hollow extension shaft 71 gradually decreases with the friction material, the weld will move closer to the clamping structure 26. In order to keep the weld always between the two cutting rings 56, it is necessary to cooperate with the moving distance of the clamping and rotating structure 25. The clamping and rotating structure 25 drives the rack 48 to move, the movement of the rack 48 drives the one-way gear four 47 to rotate, the one-way gear four 47 drives the rotating shaft 45 and the bevel gear one 46 to rotate, the bevel gear one 46 drives the bevel gear two 44 and the double-section reciprocating threaded rod 43 to rotate, and the rotation of the double-section reciprocating threaded rod 43 drives the two moving plates 410 to move towards the clamping structure 26 at the same time. During the movement, it drives structures such as the support cylinder 411 and the cutting ring 56 to move. The movement of the cutting ring 56 is realized by the movement of the clamping and rotating structure 25, and the moving distance of the clamping and rotating structure 25 is proportional to the moving distance of the cutting ring 56, so that when the position of the weld changes, the cutting ring 56 is always on both sides of the weld. The flash generated by the internal friction of the weld will pass through the gap between the two cutting rings 56 and enter the inside of the two cutting rings 56, and then the flash material contacts the flash contact surface 57. The grease on the flash contact surface 57 will reduce the friction between the flash contact surface 57 and the flash material, preventing the flash contact surface 57 from solidifying with the flash material. Moreover, after the flash material enters through the narrow slots of the two cutting rings 56, it can reduce the connection area between the flash material and the weld and reduce the thickness of the flash, thereby reducing the processing difficulty;

[0065] During friction welding, the wall of the hollow shaft is relatively weak, and strong extrusion and rotation are likely to cause the shaft wall to collapse. When the support cylinder 411 rotates, it supports the inner walls of the hollow input shaft 73 and the hollow extension shaft 71, reducing the possibility of collapse;

[0066] The starting motor two 33 drives the first gear 34 to rotate forward. The forward rotation of the first gear 34 meets the rotation direction for the one-way first gear 55 to drive the sleeve 54 to rotate. The rotation of the sleeve 54 drives the circular plate 42 to rotate. The rotation of the circular plate 42 drives structures such as the double-section reciprocating threaded rod 43, the second bevel gear 44, the first bevel gear 46, the rotating shaft 45, the fourth one-way gear 47, the second guide rod 49, the moving plate 410, the support cylinder 411, and the cutting ring 56 to rotate. When rotating, since the rack 48 moves away following the clamping and rotating structure 25, the rack 48 disengages from the fourth one-way gear 47. Therefore, the fourth one-way gear 47 will not be blocked and limited by the rack 48 during rotation. When the circular plate 42 drives the double-section reciprocating threaded rod 43 to rotate around the sleeve 54, the double-section reciprocating threaded rod 43 drives the second one-way gear 53 to rotate and move accordingly. When moving, the meshing and rotating direction of the second one-way gear 53 with the internal gear ring 52 meets the rotation direction for driving the double-section reciprocating threaded rod 43 to rotate. Therefore, the second one-way gear 53 drives the double-section reciprocating threaded rod 43 to rotate self-driven through the internal ratchet component, enabling the moving plate 410 to continue moving towards the end of the reciprocating thread. When moving, the cutting ring 56 rotating following the circular plate 42 squeezes the flash material to saw off the flash. After sawing off, the moving plate 410 continues to move until it reaches the end of the thread. The moving plate 410 reaching the end of the thread drives the cutting ring 56 to reset. After resetting, the motor two 33 is turned off;

[0067] The controller controls the operation of the clamping and rotating structure 25 and the clamping structure 26. The operator removes the hollow extension shaft 71 and the hollow input shaft 73, and then starts the motor one 22 to make the clamping and rotating structure 25 drive the rack 48 to reset. When resetting, the rack 48 meshes with the fourth one-way gear 47. However, at this time, the moving direction of the rack 48 does not meet the rotation direction for the fourth one-way gear 47 to drive the rotating shaft 45 to rotate. After resetting, wait for the next processing.

[0068] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A connecting structure of an extension shaft and an input shaft, comprising a workbench, characterized in that: Also includes: A driving mechanism connected to the friction welding mechanism includes a fixing plate 2 fixed on the top of the fixing plate 1; A collapse prevention mechanism, which is connected to the friction welding mechanism, includes two support cylinders; The collapse prevention mechanism also includes a fixing plate four fixed on the top of the fixing plate two, the fixing plate four is internally connected to a circular plate for rotation, the circular plate is internally connected to a double-section reciprocating threaded rod and fixed to a guide rod two for rotation, a bevel gear two is externally fixed to one end of the double-section reciprocating threaded rod, a bevel gear one is meshed with one side of the bevel gear two, a rotating shaft is fixed inside the bevel gear one, the rotating shaft is rotationally connected to the circular plate, a one-way gear four is fixed to the end of the rotating shaft away from the bevel gear one, a rack is meshed with the top of the one-way gear four, and the rack is fixedly connected to the shell of the clamping rotating structure; The collapse prevention mechanism also includes a movable plate respectively threadedly sleeved on the outside of the two reciprocating threads of the double-section reciprocating threaded rod, the movable plate is sleeved on the outside of the second guide rod, an electromagnetic component is fixed to the annular wall of the movable plate, and the two electromagnetic components are respectively connected to the two support tubes by magnetic attraction; An inner hole flash processing mechanism, which is connected to the collapse prevention mechanism, comprises two cutting rings, and the two cutting rings are provided with flash contact surfaces on opposite sides; The inner hole flash processing mechanism also includes a sleeve fixed on the side of the circular plate away from the clamping rotating structure, and a one-way gear 1 is installed on the outer wall of the end of the sleeve away from the circular plate, and the one-way gear 1 is meshed with the gear 1; A mounting frame is fixed on the top of the second fixing plate, an inner tooth ring is fixed on the inner wall of the mounting frame, the inner teeth of the inner tooth ring are meshed with a one-way gear 2, and the one-way gear 2 is fixed to one end of the double-section reciprocating threaded rod; The two cutting rings are respectively fixed on the adjacent ends of the two supporting tubes.

2. The connection structure of the extension shaft and the input shaft according to claim 1, characterized in that: Also included is a friction welding mechanism mounted on the top of the workbench; The friction welding mechanism includes a fixed plate 1, a motor 1 is fixed to one side of the fixed plate 1, a screw is fixed to the output end of the motor 1, the external thread sleeve of the screw is provided with a clamping and rotating structure, two guide rods 1 are fixed to one side of the fixed plate 1, the two guide rods are set inside the clamping and rotating structure, and a clamping structure is fixed to the top of the workbench.

3. The connection structure of the extension shaft and the input shaft according to claim 2, characterized in that: A fixing plate three is fixed on the top of the fixing plate two, a motor two is fixed on one side of the fixing plate three, and a gear one is fixed on the output end of the motor two.

4. The connection structure of the extension shaft and the input shaft according to claim 3, characterized in that: Also included is a flash anti-sticking mechanism connected to the collapse prevention mechanism; The flash anti-sticking mechanism includes a pipe rotatably connected to the inside of a circular plate, the pipe is sleeved inside a sleeve, a rotary sealing connector is installed at one end of the pipe, the rotary sealing connector is externally connected to a feeder, and a plurality of nozzles are externally installed at the other end of the pipe, the pipe is sleeved inside a movable plate close to the circular plate, a one-way gear three is installed on the outer wall of one end of the pipe, and the one-way gear three is meshed with gear one.

5. The connection structure of the extension shaft and the input shaft according to claim 4, characterized in that: Also included is a reinforcement anti-twist mechanism connected to the collapse prevention mechanism, comprising a plurality of reinforcement plates; The strengthening anti-twisting mechanism also includes a plurality of rod holes opened at one end of the two support tubes away from each other, the rod holes are sleeved with a limit rod inside, the limit rods are sleeved with a spring outside, and one end of the spring is fixedly connected to the inner wall of the rod hole; A mounting ring is fixed to one end of the plurality of limit rods, the other end of the spring is fixedly connected to the mounting ring, a mounting tube is fixed to one side of the mounting ring, a plurality of extrusion ports are opened on the mounting tube, and the reinforcing plate is sleeved inside the extrusion ports; A plurality of fixing frames are fixed on the inner wall of the installation cylinder, an electric push rod is fixed on the fixing frame, and an output end of the electric push rod is fixedly connected to the reinforcing plate.

6. The connection structure of the extension shaft and the input shaft according to claim 5, characterized in that: A controller is fixed on one side of the workbench, and the controller is electrically connected to the motor 1, the motor 2, the feeder, the electric push rod, the electromagnetic component, the clamping rotation structure and the clamping structure respectively.

Images