Current transformer

Abstract

The utility model relates to the related technical field of current transformers, in particular to a current transformer, which comprises a detector and a transformer, a binding post is fixedly connected to the surface of the transformer, a clamping mechanism is arranged on the surface of the transformer, and an adjusting mechanism is arranged on the lower surface of the transformer. According to the current transformer, through the arrangement of a first screw rod, a rubber pad, a connecting block, a rotating shell, a rotating piece, a second rotating shaft and a limiting rod, when a wire needs to be clamped, the first screw rod is rotated firstly to drive the connecting block to push outwards, and when the connecting block is pushed outwards, the rotating piece is driven by the second rotating shaft to rotate; and at the moment, a rotating shell in the rotating piece rotates so as to drive a limiting rod to obliquely rotate inwards, and when a first screw rod rotates to a certain degree, the limiting rod extrudes a wire rod to fix the wire rod, so that the direct-current wire can be fixed, meanwhile, the wire cannot be abraded, and the wire can be better protected.

Description

Technical Field

[0001] The utility model relates to the technical field related to current transformers, and in particular to a current transformer. Background Art

[0002] A current transformer is an instrument that converts electric current. Its principle is to convert a large current on the primary side into a small current on the secondary side for measurement. It is composed of a closed iron core and a winding, and can play the role of current conversion and electrical isolation, so as to better protect the life safety of measuring equipment and measuring personnel, and reduce current consumption. It also plays a vital role in daily life. For example, the substations and transmission boxes in our lives all require current transformers to convert current. Therefore, a current transformer is particularly needed.

[0003] However, most of the existing current transformers directly pass the DC wires through the transformers without fixing and clamping them, which may cause the risk of unstable installation or detachment of the wires. At the same time, the detachment of the wires may also cause great harm to people nearby. Utility Model Content

[0004] The purpose of the utility model is to provide a current transformer to solve the problem of the existing current transformer proposed in the above background technology. Since most of the existing current transformers directly pass the DC wires through the transformers without fixing and clamping, this may cause the risk of unstable installation or detachment of the wires. At the same time, the detachment of the wires may also cause great harm to people nearby.

[0005] To achieve the above object, the utility model provides the following technical solution: a current transformer, comprising a transformer, a terminal is fixedly connected to the surface of the transformer, a clamping mechanism is provided on the surface of the transformer, and an adjustment mechanism is provided on the lower surface of the transformer;

[0006] The clamping mechanism includes a first rotating shaft, a connecting block, a threaded groove, a first screw, a second rotating shaft, a rotating part, a connecting column, a fixed column, a rotating shell, a limit rod and a rubber pad. The outer surface of the mutual inductor is provided with the first rotating shaft, the outer surface of the first rotating shaft is provided with a connecting block, the surface of the connecting block is provided with a threaded groove, the internal thread of the connecting block is connected with the first screw, the second rotating shaft is provided on one side of the surface of the connecting block, and a rotating part is provided at one end of the second rotating shaft. The surface of the mutual inductor is fixedly connected with the connecting column, the inner surface of the rotating part is fixedly connected with the fixed column, the outer surface of the fixed column is provided with a rotating shell, the interior of the rotating shell is provided with a limit rod, and the outer side of one end of the limit rod is wrapped with a rubber pad.

[0007] Preferably, two groups of the connecting blocks are provided on the first screw rod, and three groups of the connecting columns are provided on the mutual inductor and are symmetrically distributed.

[0008] Preferably, the fixed column, the rotating shell and the limiting rods constitute a rotating structure, and the limiting rods are provided in three groups inside the rotating member and are symmetrically distributed.

[0009] Preferably, the adjustment mechanism includes a sliding base, a threaded hole, a bottom plate, a sliding groove, a limiting groove, a second screw and a fixing nut. The lower surface of the mutual inductor is fixedly connected to the sliding base, threaded holes are provided on both sides of the surface of the sliding base, a bottom plate is provided on the outer surface of the sliding base, a sliding groove is provided on one side of the surface of the bottom plate, a limiting groove is provided on one side of the surface of the bottom plate, a second screw is provided inside the threaded hole, and a fixing nut is provided on the outer side of the surface of the second screw.

[0010] Preferably, two groups of threaded holes are provided on the sliding base, and the inner side of the limiting groove is in contact with the outer side of the second screw rod.

[0011] Preferably, the limiting groove, the second screw rod and the fixing nut constitute a limiting structure, and two groups of sliding grooves are provided on the bottom plate.

[0012] Compared with the prior art, the beneficial effect of the utility model is as follows: the current transformer, through the arrangement of the first screw, the connecting block, the rotating shell, the rotating part, the second rotating shaft and the limiting rod, when the wire needs to be clamped, first rotate the first screw to drive the connecting block to push outward, when the connecting block is pushed outward, the rotating part will be driven to rotate by the second rotating shaft, at this time the rotating shell inside the rotating part will rotate to drive the limiting rod to rotate inward, when the first screw rotates to a certain extent, the limiting rod will squeeze the wire, and then the rubber pad will rub and squeeze it to fix it, so that the DC wire can be fixed, and at the same time the wire will not be worn, and the wire can be better protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the side view of the appearance structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the first rotating shaft and the connecting block cooperating with each other in the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the rotating shell and the limiting rod cooperating with each other in the utility model;

[0016] Figure 4 It is a schematic diagram of the structure in which the second screw rod and the fixing nut cooperate with each other in the utility model.

[0017] In the figure: 1. mutual inductor; 2. terminal; 3. clamping mechanism; 301. first rotating shaft; 302. connecting block; 303. threaded groove; 304. first screw; 305. second rotating shaft; 306. rotating member; 307. connecting column; 308. fixing column; 309. rotating shell; 310. limiting rod; 311. rubber pad; 4. adjusting mechanism; 401. sliding base; 402. threaded hole; 403. bottom plate; 404. sliding groove; 405. limiting groove; 406. second screw; 407. fixing nut. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-4 The utility model provides a technical solution: a current transformer, comprising a transformer 1, a terminal 2 is fixedly connected to the surface of the transformer 1, a clamping mechanism 3 is arranged on the surface of the transformer 1, and an adjustment mechanism 4 is arranged on the lower surface of the transformer 1;

[0020] The clamping mechanism 3 includes a first rotating shaft 301, a connecting block 302, a thread groove 303, a first screw 304, a second rotating shaft 305, a rotating member 306, a connecting column 307, a fixing column 308, a rotating shell 309, a limiting rod 310 and a rubber pad 311. The outer surface of the transformer 1 is provided with the first rotating shaft 301, the outer surface of the first rotating shaft 301 is provided with a connecting block 302, the surface of the connecting block 302 is provided with a thread groove 303, and the inner thread of the connecting block 302 is connected with the first screw 304, a second rotating shaft 305 is arranged on one side of the surface of the connecting block 302, a rotating member 306 is arranged at one end of the second rotating shaft 305, a connecting column 307 is fixedly connected to the surface of the mutual inductor 1, a fixing column 308 is fixedly connected to the inner surface of the rotating member 306, a rotating shell 309 is arranged on the outer surface of the fixing column 308, a limiting rod 310 is arranged inside the rotating shell 309, and a rubber pad 311 is wrapped on the outer side of one end of the limiting rod 310, through the first rotating shaft 301, the connecting block 302, and the screw The groove 303, the first screw 304, the second rotating shaft 305, the rotating member 306, the connecting column 307, the fixing column 308, the rotating shell 309, the limiting rod 310 and the rubber pad 311 are arranged. When it is necessary to clamp the wire, the first screw 304 is first rotated to rotate in the thread groove 303. The connecting block 302 at the proximal end will be slightly tilted due to the rotation of the first screw 304, and the connecting block 302 at the distal end will be pushed outward by the force of the threaded connection. When the second rotating shaft 305 rotates slightly, the rotating member 306 is driven to rotate. When the rotating member 306 rotates, the fixed column 308 drives the rotating shell 309 to rotate. At this time, the limiting rod 310 is driven to rotate by the rotating shell 309, and one end is tilted inward. When the first screw 304 rotates to a certain extent, the three limiting rods 310 clamp the wire. By setting the rubber pad 311, the wire can be better protected and the limit can be fixed, thereby increasing the friction.

[0021] Furthermore, two groups of connecting blocks 302 are arranged on the first screw 304, and three groups of connecting columns 307 are arranged on the mutual inductor 1 and are symmetrically distributed. By setting the connecting block 302 on the first screw 304, the first screw 304 can drive the rotating part 306 to rotate when rotating. By setting the connecting column 307 on the mutual inductor 1, the limit rod 310 can be better rotated.

[0022] Furthermore, the fixed column 308, the rotating shell 309 and the limiting rod 310 constitute a rotating structure. Three groups of limiting rods 310 are arranged inside the rotating part 306 and are symmetrically distributed. Through the arrangement of the fixed column 308, the rotating shell 309 and the limiting rod 310, different angles can be adjusted according to the thickness of the wire. By arranging the limiting rod 310 inside the rotating part 306, the wire groove can be better clamped.

[0023] Further, the adjustment mechanism 4 includes a sliding base 401, a threaded hole 402, a bottom plate 403, a sliding groove 404, a limiting groove 405, a second screw 406 and a fixing nut 407. The lower surface of the transformer 1 is fixedly connected with the sliding base 401, the surface of the sliding base 401 is provided with threaded holes 402 on both sides, the outer surface of the sliding base 401 is provided with a bottom plate 403, the surface of the bottom plate 403 is provided with a sliding groove 404 on one side, the surface of the bottom plate 403 is provided with a limiting groove 405 on one side, the inside of the threaded hole 402 is provided with a second screw 406, and the outer side of the surface of the second screw 406 is provided with a fixing nut 407. Through the arrangement of the sliding base 401, the threaded hole 402, the bottom plate 403, the sliding groove 404, the limiting groove 405, the second screw 406 and the fixing nut 407, when the mutual inductor 1 needs to be positioned, the sliding base 401 is first inserted into the sliding groove 404, and then the second screw 406 is passed through the limiting groove 405 and the threaded hole 402 to be threadedly connected. At this time, the fixing nut 407 and the second screw 406 are threadedly connected and tightened to fix them. When adjustment is required, the fixing nut 407 is loosened and slides through the sliding groove 404 to a suitable position, and then the fixing nut 407 is tightened.

[0024] Furthermore, two groups of threaded holes 402 are opened on the sliding base 401, and the inner side of the limiting groove 405 and the outer side of the second screw 406 are in contact with each other. By setting the threaded holes 402 on the sliding base 401, the second screw 406 can be better fixed, and by setting the limiting groove 405 and the second screw 406, the second screw 406 can be better limited.

[0025] Furthermore, the limiting groove 405, the second screw rod 406 and the fixing nut 407 constitute a limiting structure, and two groups of sliding grooves 404 are opened on the bottom plate 403. Through the setting of the limiting groove 405, the second screw rod 406 and the fixing nut 407, the sliding base 401 can be better fixed, and through the setting of the sliding groove 404 on the bottom plate 403, the sliding base 401 can be better slid to a suitable position.

[0026] Working principle: First, the mutual inductor 1 needs to be installed and fixed. First, the sliding base 401 is inserted into the sliding groove 404 and slid to a suitable place. Then, the second screw 406 is passed through the limiting groove 405, and then the fixing nut 407 is tightened to fix it. Then, the wire is passed through the mutual inductor 1 to pass through the coil. At this time, the wire needs to be clamped. First, the first screw 304 is rotated to drive the connecting block 302 to push outward. When the connecting block 302 is pushed outward, the rotating member 306 will be driven to rotate by the second rotating shaft 305. At this time, the rotating shell 309 inside the rotating member 306 will rotate, thereby driving the limiting rod 310 to rotate inward. When the first screw 304 rotates to a certain extent, the limiting rod 310 will squeeze the wire to fix it. When the wire is fixed, the terminal 2 is connected to the wire, and the mutual inductor 1 can be used to convert current.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A current transformer, comprising a current transformer (1), characterized in that: A terminal (2) is fixedly connected to the surface of the mutual inductor (1), a clamping mechanism (3) is provided on the surface of the mutual inductor (1), and an adjustment mechanism (4) is provided on the lower surface of the mutual inductor (1); The clamping mechanism (3) comprises a first rotating shaft (301), a connecting block (302), a thread groove (303), a first screw rod (304), a second rotating shaft (305), a rotating member (306), a connecting column (307), a fixing column (308), a rotating shell (309), a limiting rod (310) and a rubber pad (311); the outer surface of the mutual inductor (1) is provided with the first rotating shaft (301); the outer surface of the first rotating shaft (301) is provided with a connecting block (302); the surface of the connecting block (302) is provided with a thread groove (303); the connecting block (302) The internal thread of the connecting block (302) is connected with a first screw rod (304); a second rotating shaft (305) is arranged on one side of the surface of the connecting block (302); a rotating member (306) is arranged at one end of the second rotating shaft (305); a connecting column (307) is fixedly connected to the surface of the mutual inductor (1); a fixed column (308) is fixedly connected to the inner surface of the rotating member (306); a rotating shell (309) is arranged on the outer surface of the fixed column (308); a limiting rod (310) is arranged inside the rotating shell (309); and a rubber pad (311) is wrapped around the outer side of one end of the limiting rod (310).

2. A current transformer according to claim 1, characterized in that: The connection blocks (302) are provided in two groups on the first screw rod (304), and the connection columns (307) are provided in three groups on the mutual inductor (1) and are symmetrically distributed.

3. A current transformer according to claim 1, characterized in that: The fixed column (308), the rotating shell (309) and the limiting rod (310) constitute a rotating structure. The limiting rod (310) is arranged in three groups inside the rotating member (306) and is symmetrically distributed.

4. A current transformer according to claim 1, characterized in that: The adjustment mechanism (4) comprises a sliding base (401), a threaded hole (402), a bottom plate (403), a sliding groove (404), a limiting groove (405), a second screw rod (406) and a fixing nut (407); the sliding base (401) is fixedly connected to the lower surface of the mutual inductor (1); threaded holes (402) are provided on both sides of the surface of the sliding base (401); the bottom plate (403) is provided on the outer surface of the sliding base (401); a sliding groove (404) is provided on one side of the surface of the bottom plate (403); a limiting groove (405) is provided on one side of the surface of the bottom plate (403); a second screw rod (406) is provided inside the threaded hole (402); and a fixing nut (407) is provided on the outer side of the surface of the second screw rod (406).

5. A current transformer according to claim 4, characterized in that: Two groups of threaded holes (402) are provided on the sliding base (401), and the inner side of the limiting groove (405) and the outer side of the second screw rod (406) are in contact with each other.

6. A current transformer according to claim 4, characterized in that: The limiting groove (405), the second screw rod (406) and the fixing nut (407) constitute a limiting structure, and two groups of the sliding grooves (404) are provided on the bottom plate (403).

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