Transformer iron core clamping device and winding machine

Abstract

The utility model discloses a transformer iron core clamping device and a winding machine, and relates to the technical field of transformer iron core auxiliary tools, the transformer iron core clamping device comprises a bearing shaft, an adjusting structure and two brackets; the two brackets are installed on the bearing shaft in a spaced mode, and a clamping space is formed between the two brackets. Each bracket comprises a connecting plate and a supporting plate, the bottom of the connecting plate is connected with the bearing shaft, the supporting plate is arranged on the side, facing the clamping space, of the connecting plate, and the transformer iron core clamped in the clamping space is supported at the tops of the two supporting plates; the two brackets are respectively a movable bracket and a fixed bracket, a connecting plate of the movable bracket is connected with the bearing shaft in a sliding manner, and a connecting plate of the fixed bracket is fixed with the bearing shaft; the adjusting mechanism is installed on the bearing shaft and used for driving the movable bracket to move towards the fixed bracket on the bearing shaft. The transformer iron core clamping device can adapt to transformer iron cores of various specifications and is good in universality.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary tooling technology for transformer cores, and in particular to a transformer core clamping device and a winding machine. Background Technology

[0002] Currently, the method for winding transformer cores is to use a winding machine. However, the transformer core needs to be manually fixed directly onto the winding machine, which is not only inefficient, but also because the fixing structure of the transformer core on the winding machine is not detachable. This results in different time consumption and operational difficulties when fixing transformer cores of different specifications, and poor versatility. Utility Model Content

[0003] The main purpose of this utility model is to propose a transformer core clamping device and a winding machine, which aims to solve the technical problem of poor versatility of existing winding machines.

[0004] To achieve the above objectives, this utility model proposes a transformer core clamping device, comprising:

[0005] A load-bearing shaft, which extends along a first direction;

[0006] Two brackets are installed at intervals along the first direction on the load-bearing shaft, and a clamping space for clamping the transformer core is formed between the two brackets; each bracket includes a connecting plate and a support plate, the bottom of the connecting plate is connected to the load-bearing shaft, the support plate is disposed on the side of the connecting plate facing the clamping space, and the transformer core clamped in the clamping space is supported on the top of the two support plates; the two brackets are a movable bracket and a fixed bracket, respectively, the connecting plate of the movable bracket is slidably connected to the load-bearing shaft, and the connecting plate of the fixed bracket is fixed to the load-bearing shaft;

[0007] An adjustment mechanism is installed on the load-bearing shaft and is located on the side of the movable bracket away from the clamping space. The adjustment mechanism is used to drive the movable bracket to move on the load-bearing shaft toward the fixed bracket so that the two connecting plates cooperate to clamp the transformer core in the clamping space.

[0008] In one embodiment, a movable bushing and a fixed bushing are respectively fitted on the load-bearing shaft at positions corresponding to the two connecting plates; the movable bushing is slidably fitted on the outside of the load-bearing shaft, and the connecting plate of the movable bracket is connected to the movable bushing; the fixed bushing is fixedly fitted on the outside of the load-bearing shaft, and the connecting plate of the fixed bracket is connected to the fixed bushing.

[0009] In one embodiment, the inner wall of the movable bushing is provided with a sliding key, and the load-bearing shaft is provided with a sliding groove extending along the first direction corresponding to the position of the sliding key, and the sliding key is slidably engaged with the sliding groove; the fixed bushing is key-connected to the load-bearing shaft.

[0010] In one embodiment, both the movable bushing and the fixed bushing are fitted with a transmission gear and a connecting ring, and each connecting ring is located between the transmission gear and the corresponding connecting plate;

[0011] The connecting ring is provided with a plurality of screw holes spaced apart along its circumference, some of which are first screw holes and others are second screw holes. The first screw holes and the second screw holes are staggered along the circumference of the connecting ring. The connecting plate is connected to the first screw hole by bolts, and the transmission gear is connected to the second screw hole by bolts.

[0012] In one embodiment, the adjusting mechanism includes a fixed ring and a movable ring. The fixed ring is sleeved on the outside of the load-bearing shaft and located on the side of the movable shaft sleeve away from the clamping space. The movable ring is sleeved on the outside of the fixed ring and threadedly connected to the fixed ring. The end of the movable ring facing the movable shaft sleeve can abut against the movable shaft sleeve. The end of the fixed ring away from the movable shaft sleeve is connected to a clamp, and the clamp is fastened to the outside of the load-bearing shaft.

[0013] In one embodiment, each of the brackets has two limiting plates on the support plate, and the two limiting plates are respectively located on both sides of the transformer core in the clamping space along the second direction, the second direction being perpendicular to the first direction.

[0014] In one embodiment, each of the support plates is further provided with two pads, and the two pads are respectively located on the side of the two limiting plates facing the clamping space. The side of each pad facing the transformer core matches the shape of the outer peripheral side of the transformer core and abuts against each other.

[0015] In one embodiment, in each of the brackets, a clamping plate is further provided above the support plate. Both ends of the clamping plate along the second direction are connected to the support plate by screws, and the screws are located outside the clamping space. The clamping plate abuts against the top of the transformer core clamped in the clamping space.

[0016] In one embodiment, in each of the brackets, one end of the support plate is connected to the side of the connecting plate facing the clamping space, the other end of the support plate supports and is connected to the top of a bracket, the bottom of the bracket is sleeved on the load-bearing shaft, and the bracket is also fastened to the support plate by fasteners.

[0017] This utility model also proposes a winding machine, which uses the transformer core clamping device described above.

[0018] This utility model discloses a transformer core clamping device. Two brackets are installed on the load-bearing shaft to clamp the transformer core, facilitating rapid installation and fixation. One fixed bracket is fixed to the load-bearing shaft, while the other movable bracket can move along the shaft. Both brackets include support plates. By first supporting the transformer core on the support plates to ensure its stability, the movable bracket is moved via an adjustment mechanism to clamp the transformer core. Furthermore, the position of the movable bracket can be flexibly moved via the adjustment mechanism to adjust the clamping space, thus adapting to various transformer core specifications and exhibiting good versatility. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a front view schematic diagram of a transformer core clamping device provided in an embodiment of the present invention;

[0021] Figure 2 This is a top view schematic diagram of a transformer core clamping device provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the bushing in the transformer core clamping device provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the bracket structure in a transformer core clamping device provided in an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the adjustment mechanism in a transformer core clamping device provided in an embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of the connecting ring in a transformer core clamping device provided in an embodiment of the present invention.

[0026] Explanation of icon numbers:

[0027] 100. Transformer core clamping device; 1. Load-bearing shaft; 11. Movable bushing; 111. Keyway; 12. Fixed bushing; 13. Slide groove; 14. Transmission gear; 15. Connecting ring; 151. Screw hole; 2. Bracket; 2a. Movable bracket; 2b. Fixed bracket; 21. Connecting plate; 211. Limiting protrusion; 22. Support plate; 23. Limiting plate; 24. Clamping plate; 25. Bracket; 26. Pad; 27. Screw; 3. Clamping space; 4. Adjustment mechanism; 41. Fixed ring; 42. Movable ring; 43. Clamp;

[0028] 200. Transformer core.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] This utility model proposes a transformer core clamping device 100.

[0034] Please see Figure 1 , Figure 2 and Figure 4 In one embodiment of this utility model, the transformer core clamping device 100 includes a load-bearing shaft 1, an adjusting structure, and two brackets 2. The load-bearing shaft 1 extends along a first direction; the two brackets 2 are spaced apart on the load-bearing shaft 1 along the first direction, and a clamping space 3 for clamping the transformer core 200 is formed between the two brackets 2; each bracket 2 includes a connecting plate 21 and a supporting plate 22, the bottom of the connecting plate 21 is connected to the load-bearing shaft 1, and the supporting plate 22 is disposed on the side of the connecting plate 21 facing the clamping space 3, and the transformer core 200 is clamped in the clamping space 3. The transformer core 200 is supported on the top of two support plates 22. The two brackets 2 are a movable bracket 2a and a fixed bracket 2b, respectively. The connecting plate 21 of the movable bracket 2a is slidably connected to the load-bearing shaft 1, and the connecting plate 21 of the fixed bracket 2b is fixed to the load-bearing shaft 1. The adjusting mechanism 4 is installed on the load-bearing shaft 1, and the adjusting mechanism 4 is located on the side of the movable bracket 2a away from the clamping space 3. The adjusting mechanism 4 is used to drive the movable bracket 2a to move toward the fixed bracket 2b on the load-bearing shaft 1 so that the two connecting plates 21 cooperate to clamp the transformer core 200 in the clamping space 3.

[0035] The transformer core clamping device 100 of this utility model has two brackets set on the load-bearing shaft 1. The two brackets are used to clamp the transformer core 200, which facilitates the quick installation and fixation of the transformer core 200. One fixed bracket 2b is fixed on the load-bearing shaft 1, and the other movable bracket 2a can move on the load-bearing shaft 1. Both brackets include a support plate 22. By first supporting the transformer core 200 on the support plate 22 to ensure that the transformer core 200 is stable, the movable bracket 2a is moved by the adjustment mechanism 4 to clamp the transformer core 200. The position of the movable bracket 2a can be flexibly moved by the adjustment mechanism 4 to adjust the size of the clamping space 3, thereby adapting to various specifications of transformer cores 200 and having good versatility.

[0036] It should be noted that by first fixing the transformer core 200 to the transformer core clamping device 100, and then installing the transformer core clamping device 100 onto the winding machine, the load-bearing shaft 1 is matched with the winding machine to perform the winding operation on the transformer core 200.

[0037] like Figure 1 and Figure 2 As shown, the first direction is the left-right direction, the second direction is the front-back direction, and the vertical direction is the up-down direction. In this embodiment, the dimension of the transformer core 200 along the left-right direction is represented as the height, the dimension along the front-back direction is represented as the width, and the dimension along the up-down direction is represented as the thickness.

[0038] It should be noted that in this embodiment, the movable bracket 2a and the fixed bracket 2b have the same structure.

[0039] In one embodiment, a movable bushing 11 and a fixed bushing 12 are respectively fitted on the load-bearing shaft 1 at the positions corresponding to the two connecting plates 21; the movable bushing 11 is slidably fitted on the outside of the load-bearing shaft 1, and the connecting plate 21 of the movable bracket 2a is connected to the movable bushing 11; the fixed bushing 12 is fixedly fitted on the outside of the load-bearing shaft 1, and the connecting plate 21 of the fixed bracket 2b is connected to the fixed bushing 12.

[0040] Understandably, the movable bushing 11 is slidably fitted onto the outside of the load-bearing shaft 1, allowing the movable bracket 2a to move more smoothly and steadily along the load-bearing shaft 1. This not only reduces wear that may be caused by sliding directly on the load-bearing shaft 1, extending the service life of the equipment, but also ensures accuracy and reliability during the adjustment process. The fixed bushing 12 is fixedly fitted onto the outside of the load-bearing shaft 1, providing a stable foundation for the fixed bracket 2b, increasing the structural rigidity of the entire clamping device, and making the clamping space 3 stable.

[0041] Furthermore, the two connecting plates 21 are keyed to the movable bushing 11 and the fixed bushing 12 respectively; the keyed connection prevents the connecting plates 21 from rotating on the movable bushing 11 or the fixed bushing 12.

[0042] Specifically, both the movable bushing 11 and the fixed bushing 12 have keyways 111 extending in the first direction on their outer periphery. The connecting plate 21 has a sleeve hole that matches the movable bushing 11 or the fixed bushing 12. The inner wall of the sleeve hole is provided with a limiting protrusion 211 corresponding to the position of the first keyway 111, and the limiting protrusion 211 extends into the corresponding keyway 111. The structure is simple and stable.

[0043] It should be noted that in this embodiment, the movable bushing 11 and the fixed bushing 12 have the same structure.

[0044] Please continue reading. Figure 2 and Figure 3 In one embodiment, the inner wall of the movable bushing 11 is provided with a sliding key, and the load-bearing shaft 1 is provided with a sliding groove 13 extending in the first direction at the position corresponding to the sliding key, and the sliding key and the sliding groove 13 are slidably engaged; the fixed bushing 12 is key-connected to the load-bearing shaft 1.

[0045] Understandably, the design of the sliding key and the sliding groove 13 provides precise guidance for the movable bushing 11, ensuring that the movable bracket 2a moves accurately and stably in the left and right directions, improving the positioning accuracy of the movable bracket 2a during adjustment, and allowing the single-phase wound iron core in the clamping space 3 to be clamped more accurately. The combined use of the sliding key and the sliding groove 13 also effectively prevents the movable bushing 11 from rotating on the load-bearing shaft 1. Simultaneously, the fixed bracket 2b is keyed to the load-bearing shaft 1, preventing the fixed bushing 12 from rotating on the load-bearing shaft 1. This ensures that the movable bracket 2a and the fixed bracket 2b always maintain the correct relative position, which is beneficial for maintaining the stability of the single-phase wound iron core.

[0046] Specifically, the fixed bushing 12 is also fixed to the load-bearing shaft 1 by bolts. The fixed bushing 12 is provided with a threaded countersunk hole, and the bolt is a countersunk bolt that mates with the thread of the threaded countersunk hole.

[0047] In one embodiment, both the movable bushing 11 and the fixed bushing 12 are fitted with a transmission gear 14 and a connecting ring 15, and each connecting ring 15 is located between the transmission gear 14 and the corresponding connecting plate 21. The connecting ring 15 is provided with a plurality of screw holes 151 at intervals along its circumference, some of which are first screw holes 151 and others are second screw holes 151. The first screw holes 151 and the second screw holes 151 are staggered along the circumference of the connecting ring 15. The connecting plate 21 is connected to the first screw hole 151 by bolts, and the transmission gear 14 is connected to the second screw hole 151 by bolts.

[0048] Understandably, by setting transmission gears 14 on the movable bushing 11 and the fixed bushing 12, precise power transmission can be achieved. The transmission gears 14 cooperate with the external winding machine to drive the entire load-bearing shaft 1 to rotate, thereby realizing the winding operation of the transformer core 200. In addition, by setting a connecting ring 15 between the transmission gear 14 and the connecting plate 21, both the transmission gear 14 and the connecting plate 21 are connected to the connecting ring 15, which improves the connection stability and ensures that the transmission gear 14 and the connecting plate 21 can rotate synchronously around the load-bearing shaft 1. The staggered distribution of the first screw hole 151 and the second screw hole 151 makes the connection between the connecting plate 21 and the transmission gear 14 more stable.

[0049] Please continue reading. Figure 5 In one embodiment, the adjusting mechanism 4 includes a fixed ring 41 and a movable ring 42. The fixed ring 41 is sleeved on the outside of the load-bearing shaft 1 and located on the side of the movable shaft sleeve 11 away from the clamping space 3. The movable ring 42 is sleeved on the outside of the fixed ring 41 and threadedly connected to the fixed ring 41. The end of the movable ring 42 facing the movable shaft sleeve 11 can abut against the movable shaft sleeve 11. The end of the fixed ring 41 away from the movable shaft sleeve 11 is connected to a clamp 43, and the clamp 43 is fastened to the outside of the load-bearing shaft 1.

[0050] The clamp 43 is connected to the fixed ring 41. The clamp 43 is fastened to the load-bearing shaft 1, thus securing the fixed ring 41 to the load-bearing shaft 1 and preventing the fixed ring 41 from moving left or right relative to the load-bearing shaft 1. The threaded connection between the movable ring 42 and the fixed ring 41 allows the movable ring 42 to be adjusted left or right by rotating it. When the movable ring 42 is adjusted to the right, it abuts against the movable bushing 11 and moves it in the left-right direction, thereby clamping the transformer core 200. Precise control of the position of the movable bushing 11 via the thread ensures that the distance between the two brackets 2 can be finely adjusted to accommodate single-phase wound cores of different sizes and specifications, guaranteeing clamping stability.

[0051] Understandably, by tightening and loosening the clamp 43 and securing it at different positions on the load-bearing shaft 1, the fixing ring 41 can be fixed at different positions on the load-bearing shaft 1, so that the spacing between the two brackets 2 is different, thereby adapting to single-phase wound iron cores of different sizes and specifications. It should be noted that the clamp 43 can be a clamp from the prior art.

[0052] Specifically, the clamp 43 is fixedly connected to the end face of the fixing ring 41 by bolts.

[0053] Furthermore, a notch is provided on the outer periphery of the movable ring 42 to facilitate the rotation of the movable ring 42 by using a tool to hold it in the notch; the movable ring 42 can be a nut as in the prior art.

[0054] Please continue reading. Figure 2 and Figure 4 In one embodiment, each bracket has two limiting plates 23 on the support plate 22. The two limiting plates 23 are located on both sides of the transformer core 200 in the clamping space along the second direction, and the second direction is perpendicular to the first direction.

[0055] Understandably, by setting two limiting plates 23 spaced apart along the second direction (i.e., the front-to-back direction) on the support plate 22, the front-to-back movement of the transformer core 200 within the clamping space 3 can be effectively restricted. This not only improves the stability of the core's position during winding but also reduces the risk of positional displacement due to vibration or external forces, making it more conducive to quickly clamping the transformer core 200.

[0056] In one embodiment, each support plate 22 is further provided with two pads 26, and the two pads 26 are respectively located on the side of the two limiting plates 23 facing the clamping space 3. The side of each pad 26 facing the transformer core 200 matches the shape of the outer periphery of the transformer core 200 and abuts against each other.

[0057] In this embodiment, by designing the side of the pad 26 facing the transformer core 200 to match the shape of the outer periphery of the core, it can be ensured that the transformer core 200 is more tightly and precisely fixed in the clamping space 3, further preventing the transformer core 200 from shaking and enhancing the stability of the core during the winding process.

[0058] Specifically, the pad 26 is tightened by bolts installed on the limiting plate 23, and the corresponding pad 26 is driven to abut against the outer periphery of the transformer core 200 by rotating the bolts; and in a preferred embodiment, the pad 26 has blind holes, the position of which corresponds to the center position of the core thickness and the position of the bolts on the limiting plate 23, with one end of the bolt facing the pad 26 extending into the blind hole.

[0059] Please continue reading. Figure 1 In one embodiment, in each bracket, a clamping plate 24 is also provided above the support plate 22. Both ends of the clamping plate 24 along the second direction are connected to the support plate 22 by screws 27, and the screws 27 are located outside the clamping space 3. The clamping plate 24 abuts against the top of the transformer core 200 clamped in the clamping space 3.

[0060] Understandably, by connecting the clamping plate 24 above the support plate 22 and abutting it against the top of the transformer core 200, the clamping plate 24 and the support plate 22 can provide additional clamping force in the thickness direction of the transformer core 200. This not only enhances the overall clamping stability of the transformer core 200, but also reduces the up-and-down movement or sliding of the transformer core 200 during the winding process, ensuring the safety and reliability of the winding operation.

[0061] Furthermore, the screws 27 are located outside the clamping space 3, which facilitates disassembly and installation and avoids interference with the transformer core 200. Specifically, each end of the clamping plate 24 has two screws 27, and each screw 27 is threaded with four nuts. Two nuts are located on the upper and lower sides of the support plate 22, and the other two nuts are located on the upper and lower sides of the clamping plate 24, thereby limiting the relative position of the support plate 22 and the clamping plate 24 and ensuring the stability of clamping the transformer core 200.

[0062] In one embodiment, in each bracket, one end of the support plate 22 is connected to the side of the connecting plate 21 facing the clamping space 3, the other end of the support plate 22 supports and is connected to the top of a bracket 25, the bottom of the bracket 25 is sleeved on the outside of the load-bearing shaft 1, and the bracket 25 is also fastened to the support plate 22 by fasteners.

[0063] One end of the support plate 22 is connected to the connecting plate 21, and the other end is connected to the load-bearing shaft 1 via the bracket 25, thus forming a stable support structure. This significantly enhances the stability of the support plate 22, enabling it to better support the transformer core 200 and improve reliability.

[0064] It should be noted that fasteners such as bolts in the prior art can be used to ensure that the bracket 25 and the support plate 22 remain relatively stable.

[0065] This utility model also proposes a winding machine, which uses the transformer core clamping device 100 as described above. The specific structure of the transformer core clamping device 100 is as described in the above embodiments. Since the winding machine adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0066] The bushing is also provided with a groove that cooperates with the winding machine bracket. When installing the transformer core clamping device 100 onto the winding machine, it is only necessary to engage the groove on the bushing with the winding machine bracket and mesh the transmission gear 14 with the drive gear on the winding machine bracket. The drive gear of the winding machine drives the transmission gear 14 to rotate, thereby causing the entire transformer core 200 to rotate around the load-bearing shaft 1, so that each core column can be adjusted to the coil winding position.

[0067] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A transformer core clamping device, characterized in that, include: A load-bearing shaft, which extends along a first direction; Two brackets are installed at intervals along the first direction on the load-bearing shaft, and a clamping space for clamping the transformer core is formed between the two brackets; each bracket includes a connecting plate and a support plate, the bottom of the connecting plate is connected to the load-bearing shaft, the support plate is disposed on the side of the connecting plate facing the clamping space, and the transformer core clamped in the clamping space is supported on the top of the two support plates; the two brackets are a movable bracket and a fixed bracket, respectively, the connecting plate of the movable bracket is slidably connected to the load-bearing shaft, and the connecting plate of the fixed bracket is fixed to the load-bearing shaft; An adjustment mechanism is installed on the load-bearing shaft and is located on the side of the movable bracket away from the clamping space. The adjustment mechanism is used to drive the movable bracket to move on the load-bearing shaft toward the fixed bracket so that the two connecting plates cooperate to clamp the transformer core in the clamping space.

2. The transformer core clamping device as described in claim 1, characterized in that, A movable bushing and a fixed bushing are respectively fitted on the load-bearing shaft at the positions corresponding to the two connecting plates; the movable bushing is slidably fitted on the outside of the load-bearing shaft, and the connecting plate of the movable bracket is connected to the movable bushing; the fixed bushing is fixedly fitted on the outside of the load-bearing shaft, and the connecting plate of the fixed bracket is connected to the fixed bushing.

3. The transformer core clamping device as described in claim 2, characterized in that, The inner wall of the movable bushing is provided with a sliding key, and the load-bearing shaft is provided with a sliding groove extending along the first direction at the position corresponding to the sliding key. The sliding key and the sliding groove are slidably engaged. The fixed bushing is key-connected to the load-bearing shaft.

4. The transformer core clamping device as described in claim 2, characterized in that, Both the movable bushing and the fixed bushing are fitted with transmission gears and connecting rings, and each connecting ring is located between the transmission gear and the corresponding connecting plate. The connecting ring is provided with a plurality of screw holes spaced apart along its circumference, some of which are first screw holes and others are second screw holes. The first screw holes and the second screw holes are staggered along the circumference of the connecting ring. The connecting plate is connected to the first screw hole by bolts, and the transmission gear is connected to the second screw hole by bolts.

5. The transformer core clamping device as described in claim 2, characterized in that, The adjusting mechanism includes a fixed ring and a movable ring. The fixed ring is sleeved on the outside of the load-bearing shaft and located on the side of the movable shaft sleeve away from the clamping space. The movable ring is sleeved on the outside of the fixed ring and threadedly connected to the fixed ring. The end of the movable ring facing the movable shaft sleeve can abut against the movable shaft sleeve. The end of the fixed ring away from the movable shaft sleeve is connected to a clamp, and the clamp is fastened to the outside of the load-bearing shaft.

6. The transformer core clamping device as described in any one of claims 1 to 5, characterized in that, In each of the brackets, the support plate is further provided with two limiting plates, and the two limiting plates are respectively located on both sides of the transformer core in the clamping space along the second direction, the second direction being perpendicular to the first direction.

7. The transformer core clamping device as described in claim 6, characterized in that, Each of the support plates is also provided with two pads, and the two pads are respectively located on the side of the two limiting plates facing the clamping space. The side of each pad facing the transformer core matches the shape of the outer periphery of the transformer core and abuts against each other.

8. The transformer core clamping device as described in claim 6, characterized in that, In each of the brackets, a clamping plate is provided above the support plate. Both ends of the clamping plate along the second direction are connected to the support plate by screws, and the screws are located outside the clamping space. The clamping plate abuts against the top of the transformer core clamped in the clamping space.

9. The transformer core clamping device as described in any one of claims 1 to 5, characterized in that, In each of the brackets, one end of the support plate is connected to the side of the connecting plate facing the clamping space, the other end of the support plate supports and is connected to the top of a bracket, the bottom of the bracket is sleeved on the load-bearing shaft, and the bracket is also fastened to the support plate by fasteners.

10. A winding machine, characterized in that, The winding machine is equipped with a transformer core clamping device as described in any one of claims 1 to 9.

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