CN220672386U - Transmission structure of iron core winding equipment and iron core winding equipment - Google Patents

Abstract

The application provides a transmission structure and iron core winding equipment of iron core winding equipment relates to transmission technical field, and its technical scheme main points are: the structure comprises: a mounting part provided with a first through hole; the transmission part comprises a main rotating shaft and a telescopic shaft, the main rotating shaft penetrates through the first through hole to be rotationally connected with the mounting part, one end of the main rotating shaft is used for being connected with the rotating part, and the telescopic shaft is slidably arranged in the main rotating shaft and is used for being connected with the locking part; the first power component is used for being in transmission connection with the main rotating shaft; the second power component is used for being connected with the telescopic shaft; the connecting portion is arranged between the telescopic shaft and the second power component, a mounting groove is formed in the connecting portion, a first bearing is arranged in the mounting groove, one end of the connecting portion is connected with the second power component, and the other end of the connecting portion is connected with the telescopic shaft through the first bearing. The transmission structure of the iron core winding equipment and the iron core winding equipment provided by the application have the advantage of realizing transmission stably and efficiently.

Description

Transmission structure of iron core winding equipment and iron core winding equipment

Technical Field

The application relates to the technical field of transmission, in particular to a transmission structure of iron core winding equipment and the iron core winding equipment.

Background

The iron core is an important component of transformer equipment, and is usually formed by winding a silicon steel sheet steel strip.

At present, when the iron core is wound, the iron core is automatically wound through special winding equipment, the traditional winding equipment only winds the iron core on the turntable, and then the turntable is driven to rotate through a motor, so that the iron core is wound.

However, in the above prior art, it is necessary to fix the initial iron core on the turntable of the winding apparatus by bolts, then wind the steel coil on the initial iron core, and after the winding is completed, unwind the bolts to take out the wound iron core.

In this regard, the applicant has proposed a locking device to conveniently and rapidly achieve locking of an iron core, specifically, the locking device specifically includes a rotating portion and a locking portion slidably disposed on the rotating portion, by telescoping the locking portion to thereby clamp the iron core, and then rotating the locking portion to thereby achieve winding of the iron core, and for this reason, how to stably and efficiently achieve transmission of the locking device becomes a problem.

In view of the above, improvements are needed.

Disclosure of Invention

The utility model aims at providing a transmission structure and iron core winding equipment of iron core winding equipment has stable efficient realization driven advantage.

In a first aspect, the present application provides a transmission structure of an iron core winding apparatus, configured to transmit power to enable a locking device to stretch and rotate, where the technical scheme is as follows:

the locking device includes rotation portion and slip setting are in locking portion on the rotation portion, and this structure includes:

a mounting part provided with a first through hole;

the transmission part comprises a main rotating shaft and a telescopic shaft, the main rotating shaft passes through the first through hole and is rotationally connected with the mounting part, one end of the main rotating shaft is used for being connected with the rotating part, and the telescopic shaft is slidably arranged in the main rotating shaft and is used for being connected with the locking part;

the first power component is used for being in transmission connection with the main rotating shaft;

the second power component is used for being connected with the telescopic shaft;

the connecting portion, connecting portion set up the telescopic shaft with between the second power part, be equipped with the mounting groove in the connecting portion, be equipped with first bearing in the mounting groove, the one end of connecting portion with the second power part is connected, and the other end passes through first bearing with the telescopic shaft is connected.

The main rotating shaft is connected with the first power component by penetrating through the first through hole and rotationally connecting with the mounting part, the main rotating shaft is driven by the first power component to rotate and is fixedly connected with the rotating part so as to drive the rotating part to rotate, the rotating part rotates to wind the iron core, a telescopic shaft is slidably arranged in the main rotating shaft and is used for connecting with the locking part, a connecting part is arranged between the telescopic shaft and the second power component, the connecting part drives the telescopic shaft to stretch under the driving of the second power component, the locking part stretches and contracts to realize the locking of the iron core, the iron core is locked on the rotating part and is driven to rotate by the rotating part to realize the winding, the second power component drives the locking part to act before the locking part, if the locking part rotates together with the second power component, the parts needing to rotate are excessive, the efficiency is affected, and meanwhile, the connection of the second power component becomes a problem, therefore, the connection part is arranged between the second power component and the telescopic shaft, wherein the connection part is internally provided with a mounting groove, a first bearing is arranged in the mounting groove, one end of the connection part is connected with the second power component through the first bearing, the other end of the connection part is connected with the telescopic shaft, when the first power component drives the main rotating shaft to rotate, the main rotating shaft also drives the telescopic shaft to rotate when the iron core is wound, and the telescopic shaft is connected with the connection part through the first bearing, so that the connection part and the second power component are not driven to rotate in the rotating process of the telescopic shaft, and the second power part can stretch out and draw back through driving connecting portion intercommunication telescopic shaft, because keep stable relation of connection between second power part, connecting portion and the telescopic shaft, consequently, the scheme that this application provided has stable efficient realization driven beneficial effect.

Further, in the present application, the first bearing is a double row angular contact ball bearing.

The double-row angular contact ball bearing is used as the first bearing, so that radial force and axial force can be borne simultaneously, and the stability is improved.

Further, in this application the installation department on with the position department that the connecting portion corresponds is equipped with spacing portion, spacing portion top is seted up along the telescopic shaft direction of stretching extends the first spacing groove that sets up, be equipped with on the connecting portion with first spacing piece of corresponding complex in first spacing groove.

The first limiting part is limited through the first limiting groove, so that the connecting part is limited, and the connection stability among the second power part, the connecting part and the telescopic shaft is ensured.

Further, in the present application, the connection portion includes a first connection member and a second connection member;

one end of the first connecting piece is provided with a first connecting hole for being connected with the second power component, and the other end of the first connecting piece is provided with a first connecting boss for being connected with the second connecting piece;

the mounting groove is formed in the end face of the second connecting piece, the end face is connected with the first connecting piece, a second through hole communicated with the mounting groove is formed in the other end face of the second connecting piece, and the telescopic shaft penetrates through the second through hole to be connected with the first bearing in the mounting groove.

Further, in the present application, a first connection area is provided on the outer circumferential surface of the end of the telescopic shaft, the first connection area includes a bearing connection area for connection with the first bearing, and a threaded connection area for connection with a lock nut, and the lock nut is used for limiting the first bearing.

Further, in this application, the installation department is the inside box structure that has the cavity, first through-hole is seted up the installation department side, be provided with the mount pad on the first through-hole, the mount pad is hollow columnar structure, follow outside the installation department toward the cavity extends the setting, the both ends of mount pad are provided with the second bearing, main rotation axis passes the both ends of mount pad and with both ends the second bearing swivelling joint.

Further, in the present application, a third through hole is formed in the main rotating shaft, the diameter of the third through hole is larger than that of the telescopic shaft, linear bearings are respectively arranged at two ends of the telescopic shaft, and the telescopic shaft penetrates through the third through hole and is in sliding connection with the linear bearings at two ends of the main rotating shaft.

Further, in this application, offer on the outer periphery of main rotation axis with third through hole intercommunication and along the extension of telescopic shaft direction sets up the second spacing groove, be provided with on the telescopic shaft with second spacing groove corresponds complex second locating part.

Further, in this application, the second spacing groove is followed the diameter direction of main rotation axis link up the outer periphery of main rotation axis form two on the outer periphery of main rotation axis the fourth through-hole that link up has been seted up along the diameter direction to the telescopic shaft to correspond to wear to be equipped with the gag lever post, the both ends of gag lever post are equipped with respectively the second locating part corresponds with two the cooperation of second spacing groove.

In a second aspect, the present application further provides an iron core winding apparatus, on which the above-mentioned transmission structure is provided.

From the above, the transmission structure of the iron core winding device and the iron core winding device provided by the application are characterized in that the installation part is used for supporting, the installation part is provided with the first through hole, the main rotating shaft penetrates through the first through hole and is rotationally connected with the installation part, the main rotating shaft is connected with the first power component and rotates under the driving of the first power component, and is fixedly connected with the rotating part so as to drive the rotating part to rotate, the rotating part rotates to wind the iron core, the main rotating shaft is internally provided with the telescopic shaft in a sliding manner, the telescopic shaft is used for being connected with the locking part, the connecting part is arranged between the telescopic shaft and the second power component, the telescopic shaft is driven to stretch under the driving of the second power component, the locking part stretches out and draws back to lock the iron core, and the iron core is locked on the rotating part due to the requirement, the iron core is driven to rotate through the rotating part to realize winding, the locking part is driven to act through the second power part before the iron core is driven to rotate, if the iron core rotates together with the second power part, the parts which need to rotate are excessive, the efficiency is influenced, and meanwhile, the connection of the second power part becomes a problem, therefore, the iron core winding device is characterized in that a connecting part is arranged between the second power part and a telescopic shaft, wherein a mounting groove is arranged in the connecting part, a first bearing is arranged in the mounting groove, one end of the connecting part is connected with the second power part, the other end of the connecting part is connected with the telescopic shaft through the first bearing, when the first power part drives a main rotating shaft to rotate, the main rotating shaft also drives the telescopic shaft to rotate when the iron core winding is realized, and the telescopic shaft is connected with the connecting part through the first bearing, therefore, at telescopic shaft pivoted in-process, can not drive connecting portion and second power component rotation, and second power component can stretch out and draw back through driving connecting portion intercommunication telescopic shaft, because keep stable relation of connection between second power component, connecting portion and the telescopic shaft, therefore, the scheme that this application provided has stable efficient realization driven beneficial effect.

Drawings

Fig. 1 is a cross-sectional view of a transmission structure of an iron core winding apparatus provided in the present application.

Fig. 2 is a partial cross-sectional view of a transmission structure of an iron core winding apparatus provided herein.

Fig. 3 is a schematic view illustrating a partial structural detachment of a transmission structure of an iron core winding apparatus provided in the present application.

Fig. 4 is a cross-sectional view of a transmission structure of an iron core winding apparatus provided in the present application.

Fig. 5 is a schematic diagram illustrating structural separation of a transmission structure of an iron core winding apparatus provided in the present application.

In the figure: 100. a mounting part; 200. a transmission part; 300. a first power component; 400. a second power component; 500. a connection part; 110. a limit part; 120. a first limit groove; 130. a mounting base; 140. a second bearing; 210. a main rotation shaft; 220. a telescopic shaft; 230. a lock nut; 240. a linear bearing; 250. the second limit groove; 260. a second limiting piece; 270. a limit rod; 510. a mounting groove; 520. a first bearing; 530. a first connector; 540. a second connector; 550. a first limiting member; 001. a locking device; 002. a rotating part; 003. a locking part.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. The components of the present application, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 5, a transmission structure of an iron core winding apparatus is used for transmitting power to make a locking device 001 stretch and rotate, and the technical scheme is as follows:

the locking device 001 includes a rotation portion 002 and a locking portion 003 slidably provided on the rotation portion 002, and the structure includes:

a mounting portion 100 provided with a first through hole;

the transmission part 200 comprises a main rotating shaft 210 and a telescopic shaft 220, wherein the main rotating shaft 210 passes through the first through hole and is rotationally connected with the installation part 100, one end of the main rotating shaft 210 is used for being connected with the rotating part 002, and the telescopic shaft 220 is slidably arranged in the main rotating shaft 210 and is used for being connected with the locking part 003;

a first power unit 300 for driving connection with the main rotation shaft 210;

a second power part 400 for connection with the telescopic shaft 220;

the connecting part 500, connecting part 500 sets up between telescopic shaft 220 and second power component 400, is equipped with mounting groove 510 in the connecting part 500, is equipped with first bearing 520 in the mounting groove 510, and the one end and the second power component 400 of connecting part 500 are connected, and the other end is connected with telescopic shaft 220 through first bearing 520.

The locking device 001 is a structure for locking and fixing the iron core, in some embodiments, the locking device comprises a rotating part 002 and a locking part 003, wherein the rotating part 002 is used for fixedly supporting the iron core and driving the iron core to rotate so as to realize winding, the locking part 003 is mainly used for fixing the iron core on the rotating part 002, specifically, the locking part 003 can be a rod, the locking part 003 penetrates through the rotating part 002 and is slidably arranged on the rotating part 002, one end of the locking part 003 is used for being connected with the telescopic shaft 220, the other end of the locking part 003 is provided with a limiting block with a larger size, the iron core can be provided with two through holes which are large in size and are mutually communicated, the locking part 003 and the limiting block can penetrate through the through holes with a large size, and the limiting block cannot penetrate through the through holes with a small size, so that the locking part 003 stretches out under the driving of the second power component 400, at the moment, the locking part 003 can penetrate through the through holes and then corresponds to the positions of the small through holes through the moving positions, and then the iron core is tightly fixed under the driving of the second power component 400.

In addition, in other embodiments, the locking portion 003 may be a cam mechanism, and the movement of the telescopic shaft 220 in the telescopic direction is converted into the movement along the radial direction of the rotating portion 002 under the driving of the telescopic shaft 220, so as to tighten the iron core.

Since the locking device 001 is not the focus of the present application, the structure thereof will not be described again, and some of the above embodiments are only some of the possible embodiments.

The mounting portion 100 may be a box structure, and the first through hole is formed in a side edge of the box structure, and the transmission portion 200 is disposed in the box structure and may have a good protection effect.

The first power component 300 may be a motor, and drives the main rotating shaft 210 to rotate through the motor, and may specifically perform transmission through a gear, a synchronous wheel, and the like.

The second power unit 400 may be an air cylinder, and drives the telescopic shaft 220 to extend and retract through the air cylinder.

By arranging the mounting part 100 for supporting, arranging the first through hole on the mounting part 100, enabling the main rotating shaft 210 to penetrate through the first through hole and be rotationally connected with the mounting part 100, enabling the main rotating shaft 210 to rotate under the driving of the first power component 300 by being connected with the first power component 300, and enabling the main rotating shaft 210 to be fixedly connected with the rotating part 002, thereby driving the rotating part 002 to rotate, the rotating part 002 rotates for realizing the winding of the iron core, on the basis, the telescopic shaft 220 is slidably arranged on the main rotating shaft 210, the telescopic shaft 220 is used for being connected with the locking part 003, and the connecting part 500 is arranged between the telescopic shaft 220 and the second power component 400, the telescopic shaft 220 is driven to stretch and retract by the connecting part 500 under the driving of the second power component 400, the locking part 003 is used for locking the iron core, because the iron core is required to be locked on the rotating part, the iron core is driven to rotate by the rotating part to realize winding, the locking part 003 is driven to act by the second power component 400 before the iron core is required to rotate, if the iron core rotates together with the second power component 400, the excessive parts which need to rotate can be caused to affect the efficiency, meanwhile, how to realize the connection of the second power component 400 can also become a problem, in this application, the connecting part 500 is arranged between the second power component 400 and the telescopic shaft 220, wherein the connecting part 500 is internally provided with the mounting groove 510, the mounting groove 510 is internally provided with the first bearing 520, one end of the connecting part 500 is connected with the second power component 400, the other end is connected with the telescopic shaft 220 by the first bearing 520, when the first power component 300 drives the main rotating shaft 210 to rotate, and therefore, when the winding of the iron core is realized, the main rotating shaft 210 also drives the telescopic shaft 220 to rotate, because connect through first bearing 520 between telescopic shaft 220 and the connecting portion 500, consequently, at telescopic shaft 220 pivoted in-process, can not drive connecting portion 500 and second power component 400 rotation, and second power component 400 can be through driving connecting portion 500 intercommunication telescopic shaft 220 and stretch out and draw back, because keep stable relation of connection between second power component 400, connecting portion 500 and the telescopic shaft 220, therefore, the scheme that this application provided has stable efficient realization driven beneficial effect.

Further, in some of these embodiments, the first bearing 520 is a double row angular contact ball bearing.

The use of the double row angular contact ball bearing as the first bearing 520 can simultaneously withstand radial and axial forces, thereby improving stability.

Because in this application, the second power unit 400 drives the connecting portion 500 to act together with the telescopic shaft 220, and the telescopic shaft 220 is connected with the connecting portion 500 through the first bearing 520, the first bearing 520 receives thrust in the axial direction, and for this purpose, the double-row angular contact ball bearing is adopted as the first bearing 520, so that the radial force and the axial force can be simultaneously received, thereby improving the stability.

Further, referring to fig. 2 and 3, in some embodiments, a limiting portion 110 is disposed at a position on the mounting portion 100 corresponding to the connecting portion 500, a first limiting groove 120 extending along the extending direction of the extending shaft 220 is formed at the top of the limiting portion 110, and a first limiting member 550 corresponding to and matching with the first limiting groove 120 is disposed on the connecting portion 500.

Because the second power component 400 drives the connecting portion 500 to act together with the telescopic shaft 220, the second power component 400, the connecting portion 500 and the telescopic shaft 220 maintain a connection relationship, and when the first power component 300 drives the main rotating shaft 210 to rotate together with the telescopic shaft 220, the telescopic shaft 220 is connected with the connecting portion 500 through the first bearing 520, so that the second power component 400 and the connecting portion 500 are not driven to rotate, but vibration may still occur in the process.

To this, this application has proposed to be equipped with spacing portion 110 in the position department that corresponds with connecting portion 500 on installation department 100, and first spacing groove 120 that extends along telescopic shaft 220 telescopic direction and set up is offered at spacing portion 110 top, is equipped with on the connecting portion 500 with first spacing groove 120 corresponding complex first locating part 550, carries out spacingly to first locating part 550 through first spacing groove 120 to play spacing effect to connecting portion 500, thereby guarantee the connection stability between second power component 400, connecting portion 500 and the telescopic shaft 220.

Specifically, the first stop 550 may be a cam follower.

Further, in some of these embodiments, the connection 500 includes a first connection 530 and a second connection 540;

one end of the first connecting member 530 is provided with a first connecting hole for connecting with the second power member 400, and the other end is provided with a first connecting boss for connecting with the second connecting member 540;

the mounting groove 510 is formed in an end face of the second connecting member 540, the end face is connected with the first connecting member 530, a second through hole communicated with the mounting groove 510 is formed in the other end face of the second connecting member 540, and the telescopic shaft 220 passes through the second through hole to be connected with the first bearing 520 located in the mounting groove 510.

Through the above arrangement, the first and second connection members 530 and 540 are easily removed, so that the first bearing 520 can be easily removed.

Further, in some embodiments, a first connection area is provided on the outer circumference of the distal end of the telescopic shaft 220, and the first connection area includes a bearing connection area for connecting with the first bearing 520, and a threaded connection area for connecting with the lock nut 230, where the lock nut 230 is used for limiting the first bearing 520.

The first bearing 520 is limited by the lock nut 230 to improve stability during operation.

Further, referring to fig. 4 and 5, in some embodiments, the mounting portion 100 is a box structure with a cavity therein, the first through hole is formed on a side of the mounting portion 100, the first through hole is provided with a mounting seat 130, the mounting seat 130 is of a hollow cylindrical structure, the mounting seat 100 extends from outside the mounting portion 100 to the cavity, two ends of the mounting seat 130 are provided with second bearings 140, and the main rotating shaft 210 passes through two ends of the mounting seat 130 and is rotatably connected with the second bearings 140 at the two ends.

Through the above-mentioned setting, use the box structure that has the cavity as installation department 100, can set up other parts in the cavity to possess the effect of protection, set up mount pad 130 to hollow columnar structure, can improve the bearing capacity to main rotation axis 210, thereby improve the stability of connection, set up mount pad 130 to extend the setting from outside to the cavity, can save space and occupy.

Further, in some embodiments, a third through hole is formed in the main rotating shaft 210, the diameter of the third through hole is larger than that of the telescopic shaft 220, two ends of the third through hole are respectively provided with a linear bearing 240, and the telescopic shaft 220 passes through the third through hole to be slidably connected with the linear bearings 240 at two ends of the main rotating shaft 210.

With the above arrangement, it is possible to reduce the weight of the main rotation shaft 210 and reduce friction of the main rotation shaft 210 and the telescopic shaft, thereby improving efficiency.

Further, in some embodiments, the outer circumferential surface of the main rotating shaft 210 is provided with a second limiting groove 250 that is communicated with the third through hole and extends along the extending direction of the telescopic shaft 220, and the telescopic shaft 220 is provided with a second limiting piece 260 that is correspondingly matched with the second limiting groove 250.

The weight of the main rotation shaft 210 can be reduced by providing the second limiting groove 250, and meanwhile, the connection stability of the main rotation shaft 210 and the telescopic shaft 220 can be improved by utilizing the second limiting piece 260 to cooperate with the second limiting groove 250.

In particular, the second stop 260 may be a roller bearing follower in particular.

Further, in some embodiments, the second limiting groove 250 penetrates through the outer circumferential surface of the main rotating shaft 210 along the diameter direction of the main rotating shaft 210, two second limiting grooves 250 are formed on the outer circumferential surface of the main rotating shaft 210, the telescopic shaft 220 is provided with a fourth penetrating hole along the diameter direction and correspondingly penetrates through the limiting rod 270, and two ends of the limiting rod 270 are respectively provided with a second limiting piece 260 correspondingly matched with the two second limiting grooves 250.

With the above arrangement, the connection stability of the main rotation shaft 210 and the telescopic shaft 220 can be further improved.

In a second aspect, the present application further provides an iron core winding apparatus, on which the above-mentioned transmission structure is provided.

The transmission structure is used on the iron core winding equipment, so that the stability of the iron core winding equipment can be effectively improved.

The foregoing is merely exemplary embodiments of the present application and is not intended to limit the scope of the present application, and various modifications and variations may be suggested to one skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (10)

1. A transmission structure of an iron core winding apparatus for transmitting power to make a locking device (001) expand and contract and rotate, characterized in that, the locking device (001) includes a rotating portion (002) and a locking portion (003) slidably disposed on the rotating portion (002), the structure includes:

a mounting part (100) provided with a first through hole;

the transmission part (200) comprises a main rotating shaft (210) and a telescopic shaft (220), the main rotating shaft (210) penetrates through the first through hole to be rotationally connected with the mounting part (100), one end of the main rotating shaft is used for being connected with the rotating part (002), and the telescopic shaft (220) is slidably arranged in the main rotating shaft (210) and is used for being connected with the locking part (003);

a first power unit (300) for driving connection with the main rotation shaft (210);

a second power unit (400) for connection to the telescopic shaft (220);

connecting portion (500), connecting portion (500) set up telescopic shaft (220) with between second power component (400), be equipped with mounting groove (510) in connecting portion (500), be equipped with first bearing (520) in mounting groove (510), the one end of connecting portion (500) with second power component (400) are connected, and the other end is passed through first bearing (520) with telescopic shaft (220) are connected.

2. The transmission structure of an iron core winding apparatus according to claim 1, wherein the first bearing (520) is a double row angular contact ball bearing.

3. The transmission structure of the iron core winding equipment according to claim 1, wherein a limiting part (110) is arranged at a position, corresponding to the connecting part (500), on the mounting part (100), a first limiting groove (120) extending along the extending direction of the extending shaft (220) is formed in the top of the limiting part (110), and a first limiting piece (550) corresponding to the first limiting groove (120) is arranged on the connecting part (500).

4. The transmission structure of a core winding apparatus according to claim 1, wherein the connection part (500) includes a first connection member (530) and a second connection member (540);

one end of the first connecting piece (530) is provided with a first connecting hole for connecting with the second power component (400), and the other end is provided with a first connecting boss for connecting with the second connecting piece (540);

the mounting groove (510) is formed in the end face of the second connecting piece (540), the end face is connected with the first connecting piece (530), a second through hole communicated with the mounting groove (510) is formed in the other end face of the second connecting piece (540), and the telescopic shaft (220) penetrates through the second through hole to be connected with the first bearing (520) in the mounting groove (510).

5. The transmission structure of the iron core winding apparatus according to claim 4, wherein a first connection area is provided on an outer circumferential surface of a distal end of the telescopic shaft (220), the first connection area includes a bearing connection area for connection with the first bearing (520), and a threaded connection area is used for connection with a lock nut (230), and the lock nut (230) is used for limiting the first bearing (520).

6. The transmission structure of an iron core winding apparatus according to claim 1, wherein the mounting portion (100) is a box structure with a cavity therein, the first through hole is formed on a side edge of the mounting portion (100), a mounting seat (130) is disposed on the first through hole, the mounting seat (130) is of a hollow cylindrical structure, the mounting seat (100) extends from the outside to the cavity, two ends of the mounting seat (130) are provided with second bearings (140), and the main rotating shaft (210) penetrates through two ends of the mounting seat (130) and is rotationally connected with the second bearings (140) at two ends.

7. The transmission structure of the iron core winding apparatus according to claim 1, wherein a third through hole is formed in the main rotating shaft (210), the diameter of the third through hole is larger than that of the telescopic shaft (220), linear bearings (240) are respectively arranged at two ends of the third through hole, and the telescopic shaft (220) passes through the third through hole and is slidably connected with the linear bearings (240) at two ends of the main rotating shaft (210).

8. The transmission structure of an iron core winding apparatus according to claim 7, wherein a second limit groove (250) which is communicated with the third through hole and extends along the extending direction of the extending shaft (220) is formed on the outer circumferential surface of the main rotating shaft (210), and a second limit piece (260) which is correspondingly matched with the second limit groove (250) is formed on the extending shaft (220).

9. The transmission structure of an iron core winding apparatus according to claim 8, wherein the second limiting groove (250) penetrates through an outer circumferential surface of the main rotating shaft (210) along a diameter direction of the main rotating shaft (210), two second limiting grooves (250) are formed on the outer circumferential surface of the main rotating shaft (210), a penetrating fourth through hole is formed in the diameter direction of the telescopic shaft (220), a limiting rod (270) is correspondingly arranged in a penetrating manner, and two second limiting pieces (260) are correspondingly arranged at two ends of the limiting rod (270) and are matched with the two second limiting grooves (250).

10. A core winding apparatus, wherein the core winding apparatus is provided with a transmission structure as claimed in any one of claims 1 to 9.