Locking structure for current transformer

Abstract

The utility model discloses a locking structure for a current transformer, which comprises a mounting base, a clamping component is arranged at the top of the mounting base, a connecting component is arranged in the clamping component, a transformer body is arranged at the top of the connecting component, and a locking component is arranged at the top of the transformer body. A hollow column is fixedly connected to the top of the mounting base and located on one side of the mutual inductor body, a rotating assembly is arranged on one side of the inner wall of the hollow column, and a moving assembly is arranged on the top of the inner wall of the hollow column. Through cooperative use of the connecting frame, the fixing groove, the sliding rod, the plurality of sliding strips, the fixing assembly, the locking clamping block and other structures, the position of the locking clamping block can be adjusted, and the problem that lines need to be bent when the lines at different positions are locked is solved. The condition that rubber outside the circuit is cracked due to the bending state is avoided, the protection effect of the internal circuit is ensured, the circuit is prevented from being damaged, and the service life of the circuit is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to a locking structure for current transformers. Background Art

[0002] A current transformer is an instrument that converts a large primary current into a small secondary current for measurement based on the principle of electromagnetic induction. The current transformer consists of a closed iron core and a winding. Its primary winding has very few turns and is connected in series in the circuit of the current to be measured. Therefore, we need a current transformer with a locking mechanism.

[0003] In a Chinese patent with publication number CN217881142U, a current transformer with a locking mechanism is disclosed, including a current transformer body, a mounting frame welded at the bottom end of the current transformer body, a fixing screw hole opened on the outer wall of the mounting frame, a partition mechanism riveted on the inner wall of the current transformer body, and a locking mechanism installed on the outer wall of the current transformer body. The current transformer with a locking mechanism can be squeezed and locked according to the line inserted into the inner side of the current transformer by setting a connecting frame, a connecting hole, a locking rod, a rotating block and a locking clamp, and the locking clamp can be adjusted to a telescopic position according to the size of the line, and lines of different sizes can be locked. At the same time, a threaded connection is adopted between the connecting hole and the locking rod, which is convenient for the staff to adjust the telescopic position of the locking clamp, and the structure is simple and easy to operate.

[0004] The above scheme has the following shortcomings: in actual use, the position of the hole on the locking clip cannot be adjusted. Therefore, when it is necessary to lock the line at other positions, one end of the line needs to be bent to the corresponding position of the locking clip. When the line is bent, the outer rubber of the line will crack, thereby reducing the protection effect of the internal line, causing damage to the line, and reducing the service life of the line. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a locking structure for a current transformer.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a locking structure for a current transformer, comprising a mounting base, a clamping assembly is arranged on the top of the mounting base, a connecting assembly is arranged inside the clamping assembly, a transformer body is arranged on the top of the connecting assembly, a hollow column is fixedly connected to the top of the mounting base and located on one side of the transformer body, a rotating assembly is arranged on one side of the inner wall of the hollow column, a moving assembly is arranged on the top of the inner wall of the hollow column, two connecting frames are arranged on the outside of the moving assembly, both sides of the connecting frame and located on the front and back sides of the transformer body are fixedly connected with a mounting frame, a plurality of fixing grooves are opened on the outward side of the mounting frame, a sliding rod is fixedly connected to the inside of the mounting frame, a plurality of sliding strips are slidably connected to the outside of the sliding rod, a fixing assembly is arranged on one side of the sliding strip, a locking clamp is fixedly connected to the bottom of the sliding strip, and the rotating assembly is used to drive the moving assembly to drive the two connecting frames to move up and down.

[0007] As a further description of the above technical solution

[0008] The clamping assembly comprises a clamping groove formed on the top of the mounting base, mounting grooves are formed on both sides of the inner wall of the clamping groove, and springs are fixedly connected to both sides of the inner wall of the mounting groove.

[0009] As a further description of the above technical solution:

[0010] One end of the spring is fixedly connected to a fixing block, one side of the fixing block is fixedly connected to a connecting rod, and the fixing block is convex in shape.

[0011] As a further description of the above technical solution:

[0012] The connecting assembly comprises a clamping block slidably connected inside the clamping groove, and limiting grooves are provided on both sides of the clamping block, and the limiting grooves are matched with one side of the fixing block.

[0013] As a further description of the above technical solution:

[0014] The rotating assembly comprises a worm rotatably connected to one side of the inner wall of the hollow column, one end of the worm penetrates the outside of the hollow column and is fixedly connected to a rotating handle.

[0015] As a further description of the above technical solution:

[0016] Limiting openings are provided on both sides of the hollow column. The movable component includes a driving shaft rotatably connected to the top of the inner wall of the hollow column. The bottom end of the driving shaft is fixedly connected to a bidirectional threaded rod. A worm gear is provided on the outside of the driving shaft. The worm gear and the worm gear are meshed with each other. The two connecting frames are respectively threadedly connected to two different threads on the outer surface of the bidirectional threaded rod.

[0017] As a further description of the above technical solution:

[0018] The fixing assembly includes a hollow block fixedly connected to one side of the slide bar, a spring 2 is fixedly connected to one side of the inner wall of the hollow block, one end of the spring 2 is fixedly connected to a pushing frame, the pushing frame is in a Z-shape, and one side of the pushing frame passes through the outside of the hollow block.

[0019] The utility model has the following beneficial effects:

[0020] 1. Compared with the prior art, the locking structure for the current transformer can adjust the position of the locking clamp through the coordinated use of structures such as a connecting frame, a fixing groove, a sliding rod, a plurality of sliding bars, a fixing assembly and a locking clamp, so as to solve the problem that the line needs to be bent when locking the lines at different positions, avoid the cracking of the outer rubber of the line due to the bending state, ensure the protection effect of the internal line, prevent the line from being damaged, and increase the service life of the line.

[0021] 2. Compared with the prior art, the locking structure of the current transformer can quickly install the transformer body on the mounting base or remove the transformer body from the mounting base through the coordinated use of structures such as the snap-on assembly and the connecting assembly, which facilitates the disassembly and assembly of the transformer body, is more convenient to operate, saves time and effort, and improves the practicality of the locking structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a locking structure for a current transformer proposed by the utility model;

[0023] Figure 2 This is a schematic diagram of a hollow column structure of a locking structure for a current transformer proposed by the utility model;

[0024] Figure 3 This is a schematic diagram of the installation frame structure of a locking structure for a current transformer proposed by the utility model;

[0025] Figure 4 This is a schematic diagram of a hollow block structure of a locking structure for a current transformer proposed by the utility model;

[0026] Figure 5 The utility model provides a schematic diagram of the mounting base structure of a locking structure for a current transformer.

[0027] Legend:

[0028] 1. Mounting base; 2. Transformer body; 3. Hollow column; 4. Connecting frame; 5. Mounting frame; 6. Fixing slot; 7. Slide rod; 8. Slide bar; 9. Locking clamp; 10. Snap-in slot; 11. Mounting slot; 12. Spring 1; 13. Fixing block; 14. Connecting rod; 15. Snap-in block; 16. Limiting slot; 17. Worm; 18. Turning handle; 19. Limiting port; 20. Driving shaft; 21. Bidirectional threaded rod; 22. Worm gear; 23. Hollow block; 24. Spring 2; 25. Pushing frame. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Reference Figure 1-5 The utility model provides a locking structure for a current transformer: it includes a mounting base 1, a clamping assembly is arranged on the top of the mounting base 1, a connecting assembly is arranged inside the clamping assembly, a transformer body 2 is arranged on the top of the connecting assembly, a hollow column 3 is fixedly connected to the top of the mounting base 1 and located on one side of the transformer body 2, a rotating assembly is arranged on one side of the inner wall of the hollow column 3, a moving assembly is arranged on the top of the inner wall of the hollow column 3, two connecting frames 4 are arranged outside the moving assembly, both sides of the connecting frame 4 and located on the front and back sides of the transformer body 2 are fixedly connected with a mounting frame 5, a plurality of fixing grooves 6 are opened on the outward side of the mounting frame 5, a sliding rod 7 is fixedly connected to the inside of the mounting frame 5, a plurality of sliding bars 8 are slidingly connected to the outside of the sliding rod 7, a fixing assembly is arranged on one side of the sliding bar 8, and a locking clamp 9 is fixedly connected to the bottom of the sliding bar 8, and the rotating assembly is used to drive the moving assembly to drive the two connecting frames 4 to move up and down, the shape of the connecting frame 4 is U-shaped, the shape of the sliding bar 8 is L-shaped, and the shape of the hole on the locking clamp 9 is semicircular.

[0031] The clamping assembly includes a clamping groove 10 opened on the top of the mounting base 1, and mounting grooves 11 are opened on both sides of the inner wall of the clamping groove 10, and springs 12 are fixedly connected to both sides of the inner wall of the mounting groove 11, and one end of the spring 12 is fixedly connected to a fixing block 13, and one side of the fixing block 13 is fixedly connected to a connecting rod 14, the fixing block 13 is convex in shape, and the connecting rod 14 is T-shaped, and one end of the connecting rod 14 passes through the outside of the mounting base 1.

[0032] The connecting assembly includes a clamping block 15 slidably connected to the inside of the clamping groove 10, and limiting grooves 16 are provided on both sides of the clamping block 15. The limiting grooves 16 are adapted to one side of the fixed block 13. The top of the clamping block 15 is arc-shaped, and the top of the clamping block 15 is fixedly connected to the outside of the transformer body 2.

[0033] The rotating assembly includes a worm 17 rotatably connected to one side of the inner wall of the hollow column 3 , and one end of the worm 17 penetrates to the outside of the hollow column 3 and is fixedly connected to a rotating handle 18 .

[0034] Limit openings 19 are provided on both sides of the hollow column 3. The movable component includes a driving shaft 20 rotatably connected to the top of the inner wall of the hollow column 3. The bottom end of the driving shaft 20 is fixedly connected to a bidirectional threaded rod 21. A worm gear 22 is provided on the outer sleeve of the driving shaft 20. The worm gear 22 and the worm 17 are meshed with each other. The two connecting frames 4 are respectively threadedly connected to two different threads on the outer surface of the bidirectional threaded rod 21. Both sides of the two connecting frames 4 penetrate through the limit opening 19 and are slidably connected to both sides of the inner wall of the limit opening 19.

[0035] The fixing component includes a hollow block 23 fixedly connected to one side of the slide bar 8, a spring 24 is fixedly connected to one side of the inner wall of the hollow block 23, and one end of the spring 24 is fixedly connected to a push frame 25. The shape of the push frame 25 is Z-shaped, one side of the push frame 25 penetrates to the outside of the hollow block 23, and the other side of the push frame 25 penetrates to the inside of the fixed groove 6 and is located therein.

[0036] Working principle: when the transformer body 2 needs to be installed, first pull the two connecting rods 14 and squeeze the two springs 12 to make the two fixing blocks 13 enter the installation groove 11, so that the clamping groove 10 is not blocked by the two fixing blocks 13, and then insert the clamping block 15 into the clamping groove 10. At this time, loosen the two connecting rods 14 and under the action of the spring 12, make one side of the two fixing blocks 13 enter the two fixing grooves 6 respectively, so as to fix the clamping block 15, and then complete the installation of the transformer body 2. When the transformer body 2 needs to be inserted, the two connecting rods 14 are pulled outward to make one side of the two fixing blocks 13 separate from the two fixing grooves 6 respectively, contact the fixing of the clamping block 15, and facilitate the removal of the transformer body 2.

[0037] When it is necessary to fix the line, first pass the line through the transformer body 2 and place it on the several locking clamps 9 below. First, adjust the positions of the several locking clamps 9 according to the position of the line. By pulling one side of the push frame 25 and squeezing the second spring 24, the other side of the push frame 25 is separated from the fixed groove 6, and the fixation of the hollow block 23 is released, so that the hollow block 23 can drive the slide bar 8 and the lock to slide on the slide bar 7 until it slides to a suitable position. At this time, release the push frame 25 and under the action of the second spring 24, the other side of the push frame 25 enters the corresponding fixed groove 6, and then adjust the positions of other locking clamps 9;

[0038] After the adjustment work is completed, the worm 17 is driven to rotate by rotating the handle 18, so that the worm wheel 22 meshing with the worm 17 rotates, and then the driving shaft 20 drives the bidirectional threaded rod 21 to rotate, so that the two connecting frames 4 respectively drive several installation frames 5 to approach each other until the two corresponding locking clamps 9 abut against each other. At this time, the rotation is stopped and the position of the two corresponding locking clamps 9 is fixed under the action of the worm 17 and the worm wheel 22, so that the line can be locked.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A locking structure for a current transformer, comprising a mounting base (1), characterized in that: A snap-fit ​​assembly is provided at the top of the mounting base (1), a connecting assembly is provided inside the snap-fit ​​assembly, a transformer body (2) is provided at the top of the connecting assembly, a hollow column (3) is fixedly connected to the top of the mounting base (1) and located on one side of the transformer body (2), a rotating assembly is provided on one side of the inner wall of the hollow column (3), a moving assembly is provided on the top of the inner wall of the hollow column (3), two connecting frames (4) are provided outside the moving assembly, and a mounting frame (5) is fixedly connected to both sides of the connecting frame (4) and located on the front and back sides of the transformer body (2), a plurality of fixing grooves (6) are provided on the outward side of the mounting frame (5), a sliding rod (7) is fixedly connected to the inside of the mounting frame (5), a plurality of sliding strips (8) are slidably connected to the outside of the sliding rod (7), a fixing assembly is provided on one side of the sliding strip (8), and a locking clamp (9) is fixedly connected to the bottom of the sliding strip (8).

2. A locking structure for a current transformer according to claim 1, characterized in that: The clamping assembly comprises a clamping groove (10) provided on the top of the mounting base (1), mounting grooves (11) are provided on both sides of the inner wall of the clamping groove (10), and springs (12) are fixedly connected to both sides of the inner wall of the mounting groove (11).

3. A locking structure for a current transformer according to claim 2, characterized in that: One end of the spring 1 (12) is fixedly connected to a fixing block (13), and one side of the fixing block (13) is fixedly connected to a connecting rod (14).

4. The locking structure for a current transformer according to claim 1, characterized in that: The connection assembly comprises a clamping block (15) slidably connected inside the clamping groove (10), and limiting grooves (16) are provided on both sides of the clamping block (15).

5. The locking structure for a current transformer according to claim 1, characterized in that: The rotating assembly comprises a worm (17) rotatably connected to one side of the inner wall of the hollow column (3); one end of the worm (17) penetrates the outside of the hollow column (3) and is fixedly connected to a rotating handle (18).

6. A locking structure for a current transformer according to claim 1, characterized in that: Limiting openings (19) are provided on both sides of the hollow column (3); the moving assembly comprises a driving shaft (20) rotatably connected to the top of the inner wall of the hollow column (3); a bidirectional threaded rod (21) is fixedly connected to the bottom end of the driving shaft (20); and a worm gear (22) is sleeved on the outside of the driving shaft (20).

7. The locking structure for a current transformer according to claim 1, characterized in that: The fixing assembly comprises a hollow block (23) fixedly connected to one side of the slide bar (8), a spring 2 (24) is fixedly connected to one side of the inner wall of the hollow block (23), and one end of the spring 2 (24) is fixedly connected to a pushing frame (25).

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