Clamping device for mutual inductor iron core machining

Abstract

The utility model discloses a clamping device for mutual inductor iron core processing, which comprises a fixed base, the top end of the fixed base is symmetrically provided with connecting plates, a mounting plate is rotatably connected between the connecting plates through a rotating shaft, and the bottom end of one side, far away from the rotating shaft, of the mounting plate and one side of the top end of the fixed base are provided with inserting cavities; an inserting cavity is formed in the upper portion of the base, an installation disc abuts against one end of the inserting cavity, an installation cavity is formed in the other end of the installation disc, and a clamping protruding block is installed at one end of the installation cavity. The two clamping protruding blocks abut against the bottom ends and the top ends of the mutual inductor iron cores of different sizes, in this way, the mutual inductor iron cores of different sizes and different outer side walls can be rapidly clamped and limited, in this way, the device has no limitation in the machining process of the mutual inductor iron cores, the applicability is improved, and the machining efficiency is improved. Therefore, the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of current transformer core processing technology, specifically a clamping device for current transformer core processing. Background Technology

[0002] Instrument transformers are electrical devices that convert high current or high voltage on the primary side into low current or low voltage on the secondary side based on the principle of electromagnetic induction. They are widely used in power systems and, based on the principle of electromagnetic induction, are divided into voltage transformers (PT) and current transformers (CT). Voltage transformers convert high voltage to low voltage according to a certain ratio; the primary winding is connected in parallel in the high-voltage circuit, and the secondary winding is connected to measuring instruments, relay protection devices, etc. Current transformers convert large current to small current according to a certain ratio; the primary winding is connected in series in the circuit, and the secondary winding is connected to measuring instruments, relays, etc.

[0003] In existing technologies, current transformers all require compatible iron cores, and clamping devices are required during the processing of these iron cores. However, due to the different dimensions and shapes of the outer walls of the iron cores, traditional clamping devices have certain limitations in use and cannot meet all iron core processing requirements, resulting in a lack of applicability.

[0004] A search revealed that Chinese patent literature discloses a C-shaped iron core processing fixture for current transformers (Publication No.: CN219066614U). This utility model discloses a C-shaped iron core processing fixture for current transformers. This fixture, by placing the C-shaped iron core on a placement table and ensuring the top of the inner wall of the C-shaped iron core is in close contact with the positioning components, completes the initial positioning of the C-shaped iron core. At this point, both ends of the C-shaped iron core are located between two sets of clamping components. By adjusting the two sets of adjusting components, the two sets of clamping components, i.e., four fixing components, clamp and fix the two ends of the C-shaped iron core. This allows for clamping and fixing C-shaped iron cores of different sizes and models, offering wider adaptability. However, it still has the following drawbacks:

[0005] Although the aforementioned C-shaped iron core processing fixture for current transformers can clamp and fix C-shaped iron cores of different sizes and models, making it more adaptable, it still has limitations. It requires the use of a clamping device during the iron core processing. Because the outer wall dimensions and shapes of the iron cores are different, traditional clamping devices have certain limitations in use and cannot meet all iron core processing needs, resulting in a lack of applicability. Summary of the Invention

[0006] The purpose of this utility model is to provide a clamping device for processing transformer cores, so as to solve the problem mentioned in the background art that a clamping device is required in the process of processing the core. However, since the outer wall dimensions of the cores are different and the outer wall shapes are also different, the traditional clamping device has certain limitations in use and cannot adapt to all core processing needs, resulting in poor applicability.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a clamping device for processing transformer cores, comprising a fixed base, wherein connecting plates are symmetrically installed on the top of the fixed base, and mounting plates are rotatably connected between the connecting plates via a rotating shaft, and insertion cavities are installed on the bottom end of the mounting plate away from the rotating shaft and on the top end of the fixed base, one end of the insertion cavity abuts against a mounting plate, and the other end of the mounting plate is equipped with a mounting cavity, wherein a clamping protrusion is installed on one end of the mounting cavity, and one end of the clamping protrusion abuts against the monitoring end of a pressure sensor, and the pressure sensor is installed inside the mounting cavity.

[0008] Preferably, flexible sheets are symmetrically installed inside the insertion cavity, and first limiting protrusions are installed at equal intervals on the outer side walls of the flexible sheets.

[0009] Preferably, the outer wall of the first limiting protrusion abuts against the outer wall of the second limiting protrusion, the second limiting protrusion is symmetrically installed on both outer walls of the plug-in block, and one end of the plug-in block is inserted into the interior of the plug-in cavity.

[0010] Preferably, a first connecting seat is installed at the bottom of the mounting plate, and the interior of the first connecting seat is hinged to one end of the transmission plate via a connecting shaft.

[0011] Preferably, the other end of the transmission plate is hinged to the inside of the top of the second connecting seat, and the second connecting seat is mounted on the top of the sliding block.

[0012] Preferably, the sliding block is movably connected inside the sliding cavity, and the sliding cavity is opened inside the top of the fixed base.

[0013] Preferably, a transmission screw sleeve is installed through the side wall of the sliding block, and a connecting screw is engaged with the inner side wall of the transmission screw sleeve. The connecting screw is rotatably connected between the side walls of the sliding cavity. A motor is installed on one side of the fixed base, and the output end of the motor is connected to one end of the connecting screw.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In use, this utility model utilizes the upper clamping protrusion to move in an arc, cooperating with the lower clamping protrusion to make the two clamping protrusions abut against the bottom and top of current transformer cores of different sizes. This method enables the rapid clamping and limiting of current transformer cores of different sizes and with different outer wall surfaces, thus removing limitations in the processing of current transformer cores and improving applicability and practicality.

[0016] This invention utilizes a pressure sensor to acquire pressure data when the clamping protrusion contacts the bottom and top of the transformer core. By analyzing the changes in the pressure data, the reliability of the clamping can be determined, providing an early warning of the clamping status and effectively preventing damage to the core due to loose clamping. This improves the practicality of the device and the safety of the machining process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the combined component structure of the insertion cavity, insertion, mounting plate, mounting cavity and clamping protrusion in this utility model;

[0019] Figure 3 This is a cross-sectional structural diagram of the fixed base in this utility model;

[0020] Figure 4 This is a cross-sectional structural diagram of the mounting cavity in this utility model.

[0021] In the diagram: 1. Fixed base; 2. Connecting plate; 3. Rotating shaft; 4. Mounting plate; 5. Insertion cavity; 6. Flexible sheet; 7. First limiting protrusion; 8. Insertion block; 9. Second limiting protrusion; 10. Mounting plate; 11. Mounting cavity; 12. Clamping protrusion; 13. Pressure sensor; 14. First connecting seat; 15. Transmission plate; 16. Second connecting seat; 17. Sliding block; 18. Transmission screw sleeve; 19. Connecting screw; 20. Motor; 21. Sliding cavity. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] Example 1

[0024] Please see Figure 1-4This utility model provides a clamping device for processing transformer cores, including a fixed base 1. The front end and rear end of the fixed base 1 are both fixedly connected with mounting bolts. The top end of the fixed base 1 is symmetrically fixedly connected with a connecting plate 2, and the corresponding outer walls of the connecting plates 2 are rotatably connected with rotating shafts 3. The rotating shafts 3 are rotatably connected with mounting plates 4, and the mounting plates 4 are set with a "Z" shaped structure.

[0025] With the installation plate 4 in place, during use, the installation plate 4 moves in an arc through the rotating shaft 3, thereby causing one end of the installation plate 4 with the clamping protrusion 12 to move in an arc simultaneously. In this way, the movement of the installation plate 4 can quickly complete the contact with the transformer core, thereby completing the limit.

[0026] The top of one side of the fixed base 1 and the bottom of one side of the mounting plate 4 are both fixedly connected to insertion cavities 5. Flexible sheets 6 are symmetrically fixedly connected inside the insertion cavities 5. First limiting protrusions 7 are fixedly connected at equal intervals to the corresponding outer walls of the flexible sheets 6, and the outer walls of the first limiting protrusions 7 abut against the outer walls of the second limiting protrusions 9. The second limiting protrusions 9 are symmetrically fixedly connected at equal intervals to the outer walls of the insertion block 8 on both sides. One end of the insertion block 8 is inserted into the insertion cavity 5, and the other end of the insertion block 8 is connected to the mounting plate 4. One end of the mounting plate 10 is fixedly connected, and the other end of the mounting plate 10 is fixedly connected to the mounting cavity 11. The mounting cavity 11 is a hollow structure, and a pressure sensor 13 is fixedly connected inside the mounting cavity 11. One end of the pressure sensor 13 is fixedly connected to one end of the clamping protrusion 12, and the end of the clamping protrusion 12 near the pressure sensor 13 is fixedly connected to one end of the mounting cavity 11. Both mounting cavities 11 are fixedly connected to the pressure sensor 13, and the pressure sensor 13 is model E8Y-A1C.

[0027] By using the clamping protrusions 12, when clamping the current transformer core, the upper clamping protrusion 12 moves in an arc, cooperating with the lower clamping protrusion 12. This causes the two clamping protrusions 12 to abut against the bottom and top ends of current transformer cores of different sizes, thus completing the clamping and limiting operation. Furthermore, when the clamping protrusions 12 abut against the bottom and top ends of the current transformer core, the pressure sensor 13 generates pressure data due to the squeezing action of the clamping protrusions 12. Based on the changes in the pressure data, it can... The reliability of the clamping is judged, and the clamping status can be judged in advance, which can effectively avoid damage to the iron core due to loose clamping. At the same time, since the clamping protrusion 12 and the mounting plate 10 are both inserted into the insertion cavity 5 through the insertion block 8, and the outer side wall of the first limiting protrusion 7 abuts against the outer side wall of the second limiting protrusion 9, the clamping protrusion 12 and other components are limited. This method facilitates the quick separation of the clamping protrusion 12 and other components for subsequent maintenance operations.

[0028] The bottom end of the mounting plate 4 is fixedly connected to a first connecting seat 14 with a concave structure. The top end of the fixed base 1 is provided with a sliding cavity 21 with a convex structure. The sliding cavity 21 is movably connected to a sliding block 17. The top end of the sliding block 17 is fixedly connected to a second connecting seat 16 with a concave structure. A transmission plate 15 is provided between the second connecting seat 16 and the first connecting seat 14. The two ends of the transmission plate 15 are respectively hinged to the interior of the first connecting seat 14 and the second connecting seat 16 through rotating shafts.

[0029] The second connecting seat 16 moves to the left or right, which in turn cooperates with the movement of the transmission plate 15, causing the mounting plate 4 to move in an arc around the rotating shaft 3. This allows one end of the mounting plate 4, which is equipped with the clamping protrusion 12, to move, thereby completing the clamping and releasing of the iron core.

[0030] A motor 20 is fixedly connected to the side wall of the fixed base 1, and the output end of the motor 20 passes through the side wall of the fixed base 1 and extends into the interior of the sliding cavity 21, and is fixedly connected to one end of the connecting screw 19. The connecting screw 19 is rotatably connected inside the sliding cavity 21, and a transmission screw sleeve 18 is engaged with the outer side wall of the connecting screw 19. The transmission screw sleeve 18 passes through and is fixed inside the sliding block 17.

[0031] When it is necessary to clamp the iron core, and when the machined iron core is unclamped, the motor 20 outputs forward or reverse rotation, thereby driving the connecting screw 19 to rotate synchronously forward or reverse. Since the connecting screw 19 and the transmission screw sleeve 18 form a transmission structure, the sliding block 17 moves to the left or right inside the sliding cavity 21. Thus, the movement of the sliding block 17 drives the second connecting seat 16 to move synchronously.

[0032] The specific usage process in this embodiment is as follows:

[0033] First, the fixed base 1 is fixed by limiting components such as mounting bolts, thereby completing the overall fixing of the device and making it compatible with the processing area of ​​the current transformer processing device.

[0034] Secondly, during the processing of the transformer core, when it is necessary to clamp the core and when the processed core is unclamped, the motor 20 outputs forward or reverse rotation, thereby driving the connecting screw 19 to rotate synchronously forward or reverse. Since the connecting screw 19 and the transmission screw sleeve 18 form a transmission structure, the sliding block 17 moves to the left or right inside the sliding cavity 21. Thus, the movement of the sliding block 17 drives the second connecting seat 16 to move synchronously.

[0035] Then, when clamping the transformer core, the upper clamping protrusion 12 is made to move in an arc, cooperating with the lower clamping protrusion 12, so that the two clamping protrusions 12 abut against the bottom and top of the transformer cores of different sizes, thereby completing the clamping and limiting operation.

[0036] Finally, when the clamping protrusion 12 contacts the bottom and top of the current transformer core, the pressure sensor 13 will generate pressure data due to the squeezing of the clamping protrusion 12. Based on the change in the pressure data, the reliability of the clamping can be determined, and the clamping status can be judged in advance. Thus, a clamping device for processing current transformer cores is completed.

[0037] It should be noted that this utility model is a clamping device for processing transformer cores. All components are general standard parts or parts known to those skilled in the art. Its structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components, which refer to power components, electrical components, and the matching monitoring computer and power supply, are connected by wires. The specific connection method should refer to the working principle above and complete the electrical connection in the order of operation between each electrical component. The detailed connection method is a well-known technology in the field.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A clamping device for processing transformer cores, comprising a fixed base (1), characterized in that: The top of the fixed base (1) is symmetrically equipped with connecting plates (2). The connecting plates (2) are rotatably connected to the mounting plates (4) through the rotating shaft (3). The bottom end of the mounting plate (4) away from the rotating shaft (3) and the top end of the fixed base (1) are both equipped with insertion cavities (5). One end of the insertion cavity (5) abuts against the mounting plate (10), and the other end of the mounting plate (10) is equipped with a mounting cavity (11). One end of the mounting cavity (11) is equipped with a clamping protrusion (12), and one end of the clamping protrusion (12) abuts against the monitoring end of the pressure sensor (13). The pressure sensor (13) is installed inside the mounting cavity (11).

2. The clamping device for processing transformer cores according to claim 1, characterized in that: The insertion cavity (5) is symmetrically equipped with flexible sheets (6), and the outer side wall of the flexible sheets (6) is equipped with first limiting protrusions (7) at equal intervals.

3. The clamping device for processing transformer cores according to claim 2, characterized in that: The outer wall of the first limiting protrusion (7) abuts against the outer wall of the second limiting protrusion (9). The second limiting protrusion (9) is symmetrically installed on both outer walls of the plug-in block (8), and one end of the plug-in block (8) is inserted into the inside of the plug-in cavity (5).

4. The clamping device for processing transformer cores according to claim 1, characterized in that: The bottom end of the mounting plate (4) is equipped with a first connecting seat (14), and the interior of the first connecting seat (14) is hinged to one end of the transmission plate (15) through a connecting shaft.

5. The clamping device for processing transformer cores according to claim 4, characterized in that: The other end of the transmission plate (15) is hinged to the inside of the top of the second connecting seat (16), and the second connecting seat (16) is mounted on the top of the sliding block (17).

6. The clamping device for processing transformer cores according to claim 5, characterized in that: The sliding block (17) is movably connected to the inside of the sliding cavity (21), and the sliding cavity (21) is opened inside the top of the fixed base (1).

7. A clamping device for processing transformer cores according to claim 5, characterized in that: A transmission screw sleeve (18) is installed through the side wall of the sliding block (17), and a connecting screw (19) is engaged with the inner side wall of the transmission screw sleeve (18). The connecting screw (19) is rotatably connected between the side walls of the sliding cavity (21). A motor (20) is installed on one side of the fixed base (1), and the output end of the motor (20) is connected to one end of the connecting screw (19).

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