Clamping device for transformer iron core

Abstract

The utility model relates to a clamping device for a transformer iron core, which is characterized in that a chuck is provided with three clamping jaws and a clamping seat which are uniformly distributed along the circumferential direction, the clamping seat comprises an upper sliding block which is connected on the chuck along the height direction in a sliding way, and a sliding plate which is positioned right above a lower clamping jaw and is fixedly connected on the upper sliding block; the two small clamping claws are connected to the sliding plate in a sliding mode in the longitudinal direction. When the iron core hoisting device is used, a hoisted iron core is placed among the three clamping claws from top to bottom, then the two small clamping claws move in opposite directions so that the two small clamping claws can be spliced, and then the clamping claws arranged in the height direction and the sliding plate move in opposite directions so that the two clamping claws sliding in the longitudinal direction can be driven to move in the longitudinal direction. The three clamping claws and the small clamping claws can clamp the iron core, so that the hoisted iron core is installed in the clamping device from top to bottom to be clamped and fixed, operation can be simplified, and similarly, when the iron core needs to be taken out, the two small clamping claws are driven to move back to back, the iron core is moved upwards, and then the iron core can be taken out.

Description

Technical Field

[0001] This utility model relates to the field of transformers, and more particularly to the field of transformer core winding technology, specifically a clamping device for transformer cores. Background Technology

[0002] In the manufacturing process of transformers, a large number of copper coils need to be wound on the magnetic core. Due to the special structure of the magnetic core, the location where the copper coils need to be wound is usually a closed structure, making it impossible to install the wound copper coils onto the core. The early method was to wind them manually. However, the uneven winding force of manual winding easily led to a decrease in transformer performance. Later, manufacturers began to use machines for winding. However, when winding the core of a three-winding transformer, the core needs to be fixed to the winding frame. In order to make the three windings wound with copper coils evenly, it is usually necessary to find a central axis for fixing. However, the existing method uses three separate clamps to fix them one by one with bolts, so the central axis is very difficult to determine. This causes an imbalance in the installation, making it impossible to use normally. Therefore, multiple adjustments are required to make it work normally. The adjustment efficiency is very low, the installation of the entire core is very difficult, and the overall cost is very high.

[0003] Chinese utility model patent application number CN201820433239.1 discloses a special fixing device for winding transformer cores. However, when using this device, it is not conducive to inserting the core axially into the fixing clamp during core hoisting, nor is it conducive to removing the wound core from the clamping device, thus making the operation complicated. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a clamping device for transformer cores, which allows the hoisted core to be installed from top to bottom into the clamping device for clamping and fixing, thereby simplifying the operation.

[0005] This utility model is achieved through the following technical solution: a clamping device for a transformer core, comprising a clamping seat that is laterally slidably connected to a base and arranged opposite to each other, and a chuck axially connected to the clamping seat. The chuck is provided with three jaws evenly arranged circumferentially and a jaw seat. Two jaws arranged opposite to each other slide in the longitudinal direction on the chuck. The jaw seat is located directly above the third jaw, and the jaw seat and the third jaw slide in the height direction on the chuck. The jaw seat includes an upper slider that slides in the height direction on the chuck, a sliding plate located directly above the lower jaw and fixed to the upper slider, and two small jaws that slide in the longitudinal direction on the sliding plate.

[0006] In use, this invention adjusts the distance between the two longitudinally arranged jaws to increase the spacing between the two smaller jaws, and drives the two clamping seats to move laterally. The distance between the two clamping seats is then adjusted, and the hoisted iron core is placed from top to bottom between the three jaws. The lower jaw supports the iron core. The two smaller jaws then move towards each other to join. The jaws and sliding plate arranged along the height direction move towards each other, driving the two longitudinally sliding jaws to move longitudinally. This allows the three jaws and smaller jaws to clamp the iron core, thus installing the hoisted iron core from top to bottom into the clamping device for secure clamping, simplifying the operation. Similarly, when the iron core needs to be removed, the two smaller jaws are driven to move backward, moving the iron core upward to remove it.

[0007] Preferably, the chuck includes a first slider that slides on the chuck and a pressure plate bolted to the first slider. The first slider is also provided with a first reinforcing plate that supports the pressure plate, and the pressure plate is located between the first reinforcing plate and the iron core.

[0008] This preferred solution enhances the connection strength between the pressure plate and the first slider by setting the first reinforcing plate, thereby increasing the compressive strength of the pressure plate.

[0009] Preferably, there are two first reinforcing plates, which are arranged in a direction perpendicular to the sliding direction of the corresponding first slider.

[0010] This preferred solution further enhances the support strength between the pressure plate and the first slider by setting two reinforcing plates.

[0011] Preferably, the clamping claw includes a seat with a sliding cavity and a pressure plate fixed to the seat. The seat also has a second reinforcing plate located at the upper end of the pressure plate and supporting the pressure plate. The two pressure plates are spliced ​​together to form a pressure plate. The sliding plate is slidably connected in the sliding cavity. The seat is connected to the sliding plate by bolts.

[0012] This preferred solution, through the setting of the sliding cavity, facilitates the sliding of the small claw onto the sliding plate, and through the setting of two small pressure plates spliced ​​together to form a pressure plate, facilitates the uniform force on the iron core.

[0013] Preferably, the chuck has a longitudinally extending longitudinal slide groove and a vertical slide groove extending along the height direction and intersecting with the longitudinal slide groove. The chuck is axially connected to a bidirectional longitudinal screw located in the longitudinal slide groove and extending longitudinally. The bidirectional longitudinal screw has two sections of threads with opposite directions of rotation. The two first sliders are respectively threaded to the two sections of threads.

[0014] The chuck has a bidirectional vertical screw that is located in the vertical groove and extends along the height direction. The bidirectional vertical screw has two sections of threads with opposite directions of rotation. The slide plate and the first slider are respectively threaded onto the two sections of threads. The bidirectional vertical screw is located between the bidirectional longitudinal screw and the iron core.

[0015] This preferred solution, through the setting of the bidirectional longitudinal screw, facilitates the synchronous movement of the two longitudinally arranged jaws along the longitudinal direction. Through the setting of the bidirectional vertical screw, it facilitates the synchronous movement of the jaw and the corresponding jaw along the height direction. At the same time, the setting of the longitudinal and vertical sliding grooves facilitates the installation and placement of the bidirectional longitudinal and bidirectional vertical screws.

[0016] Preferably, both ends of the bidirectional vertical lead screw and the bidirectional longitudinal lead screw are connected to a rotating shaft, and the rotating shaft is a hexagonal shaft.

[0017] This preferred solution achieves the rotation of the bidirectional vertical lead screw and the bidirectional longitudinal lead screw by rotating the hexagonal shaft.

[0018] Preferably, the base is provided with a horizontally extending guide rail, the clamping seat is slidably connected to the guide rail, and a horizontal lead screw corresponding to the clamping seat is axially connected to the base, and a bottom block fixed to the clamping seat is threadedly connected to the horizontal lead screw.

[0019] This preferred solution facilitates the lateral movement of the clamping seat through the arrangement of guide rails, lead screws, and base blocks.

[0020] The beneficial effects of this utility model are as follows: Adjusting the distance between the two longitudinally arranged jaws increases the spacing between the two smaller jaws, and driving the two clamping seats to move laterally. Adjusting the distance between the two clamping seats, the hoisted iron core is then placed from top to bottom between the three jaws. The lower jaw supports the iron core, and then the two smaller jaws move towards each other to join together. Then, the jaws and sliding plate arranged along the height direction move towards each other, driving the two longitudinally sliding jaws to move longitudinally. This allows the three jaws and smaller jaws to clamp the iron core, thus installing the hoisted iron core from top to bottom into the clamping device for clamping and fixing, thereby simplifying the operation. Similarly, when it is necessary to remove the iron core, the two smaller jaws are driven to move backward, moving the iron core upward, and the iron core can be removed. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a 3D schematic diagram of the chuck.

[0023] Figure 3 This is a three-dimensional diagram of the chuck from another angle.

[0024] Figure 4 Side view of the chuck;

[0025] As shown in the figure:

[0026] 1. Base, 2. Chuck, 3. Clamping seat, 4. Guide rail, 5. Claw, 6. First reinforcing rib, 7. Pressure plate, 8. Second reinforcing plate, 9. Slide plate, 10. Pressure plate, 11. Seat body, 12. Claw, 13. Bidirectional longitudinal screw, 14. Bidirectional vertical screw, 15. Rotating shaft. Detailed Implementation

[0027] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0028] See attached document Figure 1-4 This utility model discloses a clamping device for a transformer core, comprising clamping seats 3 that are laterally slidably connected to a base 1 and arranged opposite each other. The base 1 extends laterally, and the two clamping seats 3 are arranged laterally and opposite each other. The base 1 is provided with a laterally extending guide rail 4, and the clamping seats 3 are slidably connected to the guide rail 4. A horizontal lead screw corresponding to the clamping seats 3 is axially connected to the base 1, and the horizontal lead screw extends laterally. A bottom block fixed to the clamping seat 3 is threadedly connected to the horizontal lead screw.

[0029] A chuck 2 is hinged to the clamping base 3, and the two chucks 2 are arranged opposite each other. The clamping base 3 is also equipped with a motor to drive the chucks 2 to rotate.

[0030] The chuck 2 is provided with three jaws 5 evenly arranged in the circumferential direction and a jaw seat. Two jaws 5 arranged opposite each other slide towards each other in the longitudinal direction on the chuck 2. The jaw seat is located directly above the third jaw 5 and the jaw seat and the third jaw 5 slide towards each other in the height direction on the chuck 2. The jaw seat includes an upper slider that slides on the chuck 2 in the height direction, a slide plate 9 located directly above the lower jaw 5 and fixed to the upper slider, and two small jaws 12 that slide on the slide plate 9 in the longitudinal direction.

[0031] The chuck 5 includes a first slider that slides on the chuck 2 and a pressure plate 7 bolted to the first slider. The first slider is also provided with a first reinforcing plate 6 that supports the pressure plate 7. The pressure plate 7 is located between the first reinforcing plate 6 and the iron core.

[0032] There are two first reinforcing plates 6, and the two first reinforcing plates 6 are arranged in a direction perpendicular to the sliding direction of the corresponding first slider.

[0033] The small claw 12 includes a seat 11 with a sliding cavity and a pressure plate 10 fixed to the seat 11. The seat 11 is also provided with a second reinforcing plate 8 located at the upper end of the pressure plate 10 and supporting the pressure plate 10. The two pressure plates 10 are spliced ​​together to form a pressure plate 7. The slide plate is slidably connected in the sliding cavity. The seat 11 is connected to the slide plate 9 by bolts.

[0034] The chuck 2 has a longitudinally extending longitudinal sliding groove and a vertical sliding groove extending along the height direction and intersecting with the longitudinal sliding groove. The chuck 2 is axially connected to a bidirectional longitudinal screw 13 located in the longitudinal sliding groove and extending longitudinally. The bidirectional longitudinal screw 13 has two sections of threads with opposite directions of rotation. The two first sliders are respectively threadedly connected to the two sections of threads.

[0035] The chuck 2 has a bidirectional vertical lead screw 14 located in a vertical groove and extending along the height direction. The bidirectional vertical lead screw 14 has two sections of threads with opposite directions of rotation. The slide plate 9 and the first slider are respectively threaded onto the two sections of threads. The bidirectional vertical lead screw 14 is located between the bidirectional longitudinal lead screw 13 and the iron core.

[0036] Both ends of the bidirectional vertical lead screw 14 and the bidirectional longitudinal lead screw 13 are connected to a rotating shaft 15, which is a hexagonal shaft.

[0037] See attached document Figure 1 The x-direction is horizontal, the y-direction is vertical, and the z-direction is vertical.

[0038] In use, this invention adjusts the distance between the two longitudinally arranged jaws 5, increases the spacing between the two small jaws 12, and drives the two clamping seats 3 to move laterally. The distance between the two clamping seats 3 is adjusted, and then the hoisted iron core is passed from top to bottom through the two small jaws and placed between the three jaws 5. The lower jaw 5 supports the iron core. Then, the two small jaws 12 move towards each other to join together. The jaws 5 and the sliding plate 9, arranged along the height direction, move towards each other, driving the two longitudinally sliding jaws 5 to move longitudinally. This allows the three jaws 5 and small jaws 12 to clamp the iron core, thus installing the hoisted iron core from top to bottom into the clamping device for secure clamping. This simplifies the operation. Similarly, when the iron core needs to be removed, the two small jaws 12 are driven to move backward, moving the iron core upward to remove it.

[0039] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A clamping device for a transformer core, characterized in that: It includes a clamping seat (3) that slides laterally toward the base (1) and is arranged opposite to each other, and a chuck (2) that is axially connected to the clamping seat (3). The chuck (2) is provided with three jaws (5) that are evenly arranged in the circumferential direction and a chuck seat. Two jaws (5) that are arranged opposite to each other slide toward the chuck (2) in the longitudinal direction. The chuck seat is located at the top of the third jaw (5) and the chuck seat and the third jaw (5) slide toward each other in the height direction on the chuck (2). The chuck seat includes an upper slider that slides along the height direction on the chuck (2), a slide plate (9) that is located directly above the lower jaw (5) and fixed to the upper slider, and two small jaws (12) that slide along the longitudinal direction on the slide plate (9).

2. The clamping device for transformer cores according to claim 1, characterized in that: The chuck (5) includes a first slider that slides on the chuck (2) and a pressure plate (7) bolted to the first slider. The first slider is also provided with a first reinforcing plate (6) that supports the pressure plate (7). The pressure plate (7) is located between the first reinforcing plate (6) and the iron core.

3. The clamping device for transformer cores according to claim 2, characterized in that: There are two first reinforcing plates (6), and the two first reinforcing plates (6) are arranged in a direction perpendicular to the sliding direction of the corresponding first slider.

4. The clamping device for transformer cores according to claim 2, characterized in that: The small claw (12) includes a seat (11) with a sliding cavity and a pressure plate (10) fixed on the seat (11). The seat (11) is also provided with a second reinforcing plate (8) located at the upper end of the pressure plate (10) and supporting the pressure plate (10). The two pressure plates (10) are spliced ​​together to form a pressure plate (7). The sliding plate is slidably connected in the sliding cavity. The seat (11) is connected to the sliding plate (9) by bolts.

5. The clamping device for transformer cores according to claim 1, characterized in that: The chuck (2) has a longitudinally extending longitudinal groove and a vertical groove extending along the height direction and intersecting with the longitudinal groove. The chuck (2) has a axially connected bidirectional longitudinal screw (13) located in the longitudinal groove and extending longitudinally. The bidirectional longitudinal screw (13) has two sections of threads with opposite directions of rotation. The two first sliders are respectively threaded onto the two sections of threads. The chuck (2) has a bidirectional vertical screw (14) located in the vertical groove and extending along the height direction. The bidirectional vertical screw (14) has two threads with opposite directions of rotation. The slide plate (9) and the first slider are threadedly connected to the two threads respectively. The bidirectional vertical screw (14) is located between the bidirectional longitudinal screw (13) and the iron core.

6. The clamping device for transformer cores according to claim 5, characterized in that: Both ends of the bidirectional vertical lead screw (14) and the bidirectional longitudinal lead screw (13) are connected to a rotating shaft (15), which is a hexagonal shaft.

7. The clamping device for transformer cores according to claim 1, characterized in that: The base (1) is provided with a horizontally extending guide rail (4), the clamping seat (3) is slidably connected to the guide rail (4), the base (1) is axially connected to a horizontal lead screw corresponding to the clamping seat (3), and the horizontal lead screw is threadedly connected to a bottom block fixed to the clamping seat (3).

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