CN214705686U

CN214705686U - Squirrel-cage hollow current transformer

Info

Publication number: CN214705686U
Application number: CN202120922777.9U
Authority: CN
Inventors: 胡杰; 林海涌
Original assignee: Xinyang Yudian Transformer Co ltd
Current assignee: Xinyang Yudian Transformer Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-11-12
Anticipated expiration: 2031-04-30

Abstract

The utility model discloses a squirrel-cage hollow current transformer, including annular core and winding, the spout has been seted up to annular core inside wall, the spout inner wall rotates and is connected with first lead screw, welded fastening has drive assembly on the first lead screw, threaded connection has first nut on the first lead screw, the lateral wall welded fastening of first nut has the barrel, barrel lateral wall welded fastening has hexagon nut, the barrel inner wall rotates and is connected with the wiring part, the patchhole has been seted up to annular core inside wall. The utility model discloses a set up jack, cylinder and threaded rod isotructure, insert the electric wire and run through-hole and jack in proper order, the threaded rod rotates and drives the cylinder and rotate, will insert the electric wire and be the winding of screw thread form and establish on cylindrical surface, accomplish the fixed of inserting the electric wire, rotate at last and change the hand and remove the barrel to annular iron core in, the simple quick completion of whole operation process is to current transformer's circuit access, makes things convenient for the maintenance and the maintenance in later stage.

Description

Squirrel-cage hollow current transformer

Technical Field

The utility model relates to a current transformer technical field especially relates to a squirrel-cage hollow current transformer.

Background

The current transformer is an instrument for converting a large current on a primary side into a small current on a secondary side according to the electromagnetic induction principle to measure, and consists of a closed iron core and a winding. The primary side winding of the transformer has few turns and is connected in a circuit of the current to be measured.

Current squirrel-cage hollow current transformer often is provided with and inserts the wire terminal and connects out the wire terminal and fix the circuit, nevertheless often carries out fixed connection through the bolt, and the installation is inconvenient, and increase maintainer's installation working strength has also increaseed the later stage to current transformer's change and the work load of maintaining.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a squirrel-cage hollow current transformer.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a squirrel-cage hollow current transformer, includes annular core and winding, the spout has been seted up to annular core inside wall, spout inner wall through rotation is connected with first lead screw, welded fastening has the messenger to connect out the fixed driver part of electric wire on the first lead screw, threaded connection has first nut on the first lead screw, the lateral wall welded fastening of first nut has the barrel, barrel lateral wall welded fastening has hexagon nut, barrel inner wall rotates and is connected with and carries out the wiring part fixed to inserting the electric wire, the through-hole has been seted up to the barrel inner wall, the patchhole has been seted up to annular core inside wall, the patchhole is L font structure.

Preferably, the driving part comprises a first conical wheel welded and fixed on the first lead screw, the inner wall of the insertion hole is rotatably connected with a second lead screw through a fixing block, and one end of the second lead screw is welded and fixed with a second conical wheel.

Preferably, the first conical wheel is meshed with the second conical wheel, the second screw rod is connected with a second nut in a threaded mode, and the side wall of the second nut is fixedly welded with a conducting strip through a plurality of push rods.

Preferably, the wiring part is including rotating the cylinder of connection in the barrel inside, the jack has been seted up to the cylinder inner wall, welded fastening has the threaded rod on the cylinder, threaded rod threaded connection is in hexagon nut.

Preferably, the cylinder is made of a conductive material, the cylinder and the conductive sheet are both fixedly connected with electric wires, and the two electric wires are respectively and electrically connected with two ends of the winding.

Preferably, a rotating handle is welded and fixed to one end, far away from the annular iron core, of the first lead screw, and a handle is welded and fixed to one end of the threaded rod.

The utility model provides a beneficial effect:

1. through the arrangement of the sliding groove, the first nut, the plurality of conical wheels and other structures, a user rotates the rotating hand to drive the first lead screw to rotate, the first nut drives the barrel to move downwards, so that the barrel moves to the bottom end of the annular iron core, the circuit transformer is conveniently connected into a circuit by the user, and meanwhile, the first lead screw drives the first conical wheel to synchronously rotate when rotating, so that the first conical wheel drives the second conical wheel connected in a meshed mode to rotate, the second conical wheel drives the second lead screw to synchronously rotate, the power transmission is completed, the arrangement of a plurality of power devices is avoided, and the production cost is reduced;

2. by arranging the second nut, the conducting plate, the second lead screw and other structures, when the rotating handle is rotated, the external conducting wire is inserted from the bottom end of the insertion hole, and under the meshing action of the first conical wheel and the second conical wheel, the second lead screw rotates, the second nut drives the conducting plate to move left and right in the insertion hole through the plurality of push rods until the conducting plate is in good abutting contact with the external conducting wire, so that the fixing of the outgoing electric wire is completed;

3. through setting up the jack, cylinder and threaded rod isotructure, insert the electric wire and run through-hole and jack in proper order after, rotate the crank and drive the threaded rod and rotate, the threaded rod rotates and drives the cylinder synchronous rotation, the cylinder will insert the electric wire and be the winding of screw thread form when rotating along with the threaded rod and establish on cylindrical surface, thereby accomplish the fixed of inserting the electric wire, rotate at last and turn the hand and remove the barrel to the annular iron core in, the simple quick completion of whole operation process is to current transformer's circuit access, make things convenient for the maintenance and the maintenance in later stage.

Drawings

Fig. 1 is a perspective view of a squirrel-cage hollow-core current transformer according to the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 taken in vertical section;

fig. 3 is an enlarged schematic view of a portion a of fig. 2.

In the figure: 1 annular iron core, 2 windings, 3 chutes, 4 first lead screws, 5 first nuts, 6 barrels, 7 hexagonal nuts, 8 through holes, 9 cylinders, 10 insertion holes, 11 threaded rods, 12 hand rockers, 13 hand rotators, 14 electric wires, 15 first cone wheels, 16 second cone wheels, 17 second lead screws, 18 second nuts, 19 conducting strips and 20 insertion holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a squirrel-cage hollow current transformer, including annular iron core 1 and winding 2, spout 3 has been seted up to 1 inside wall of annular iron core, 3 inner walls of spout run through and rotate and be connected with first lead screw 4, welded fastening has the drive part that makes the electric wire fixed that connects out on the first lead screw 4, threaded connection has first nut 5 on the first lead screw 4, the lateral wall welded fastening of first nut 5 has barrel 6, 6 lateral walls welded fastening of barrel has hexagon nut 7, 6 inner walls of barrel rotate and be connected with the wiring part that carries out the fixing to inserting the electric wire, through-hole 8 has been seted up to 6 inner walls of barrel, patchhole 20 has been seted up to 1 inside wall of annular iron core, patchhole 20 is the L font structure.

The driving part comprises a first conical wheel 15 welded and fixed on a first lead screw 4, the inner wall of the insertion hole 20 is rotatably connected with a second lead screw 17 through a fixing block, one end of the second lead screw 17 is welded and fixed with a second conical wheel 16, the first lead screw 4 is driven to synchronously rotate when rotating, so that the first conical wheel 15 drives the second conical wheel 16 connected in a meshed mode to rotate, the second conical wheel 16 drives the second lead screw 17 to synchronously rotate, power transmission is completed, multiple power devices are avoided being arranged, and production cost is reduced.

The first cone pulley 15 is engaged with the second cone pulley 16, the second screw 17 is connected with a second nut 18 through threads, the side wall of the second nut 18 is fixedly welded with a conducting strip 19 through a plurality of push rods, the side wall of the second nut 18 abuts against the inner wall of the insertion hole 20 and does not rotate, an external conducting wire is inserted from the bottom end of the insertion hole 20, when the second screw 17 rotates, the second nut 18 drives the conducting strip 19 to move left and right in the insertion hole 20 through the plurality of push rods until the conducting strip 19 abuts against the external conducting wire well, and the outgoing electric wire is fixed.

The junction box is including rotating cylinder 9 of connection in 6 insides of barrel, jack 10 has been seted up to 9 inner walls of cylinder, welded fastening threaded rod 11 on

cylinder

9, 11 threaded connection of threaded rod is in hexagon nut 7, insert the access electric wire from inserting in the through-hole 8, insert the electric wire and run through-hole 8 and jack 10 back in proper order, it drives threaded rod 11 and rotates to rotate cranking hand 12, threaded rod 11 rotates and drives cylinder 9 synchronous rotation, cylinder 9 will insert the electric wire and be the winding of screw thread form and establish on cylinder 9's surface along with threaded rod 11 pivoted, thereby accomplish the fixed of inserting the electric wire.

The cylinder 9 is made of conducting material, the electric wires 14 are fixedly connected to the cylinder 9 and the conducting strips 19, the two electric wires 14 are electrically connected with the two ends of the winding 2 respectively, and the cylinder 9 and the conducting strips 19 are electric conductors, so that the current transformer is connected into a circuit.

One end of the first lead screw 4, which is far away from the annular iron core 1, is welded and fixed with a rotating handle 13, one end of the threaded rod 11 is welded and fixed with a shaking handle 12, the rotating handle 13 facilitates users to rotate the first lead screw 4, and the shaking handle 12 facilitates users to rotate the threaded rod 11.

The utility model discloses in, the user rotates runner 13 and drives first lead screw 4 and rotate, 3 inner walls of first nut 5 lateral walls and spout offset, do not produce the rotation, thereby first nut 5 drives barrel 6 downstream, make barrel 6 move the bottom that the annular is unshakable in one's determination 1, the person of facilitating the use inserts this circuit transformer in the circuit, drive first cone pulley 15 synchronous rotation in the time of first lead screw 4 pivoted simultaneously, thereby first cone pulley 15 drives second cone pulley 16 that the meshing is connected and rotates, make second cone pulley 16 drive second lead screw 17 synchronous rotation, accomplish the transmission of power, avoid setting up a plurality of power equipment, and the production cost is reduced.

When the rotating handle 13 is rotated, an external conductive wire is inserted from the bottom end of the insertion hole 20, and under the meshing action of the first cone pulley 15 and the second cone pulley 16, when the second lead screw 17 rotates, the second nut 18 drives the conductive sheet 19 to move left and right in the insertion hole 20 through a plurality of push rods until the conductive sheet 19 is in good contact with the external conductive wire, so that the fixing of the outgoing electric wire is completed.

The user inserts the access electric wire from 8 interior inserts of through-holes afterwards, the access electric wire runs through-hole 8 and jack 10 back in proper order, it rotates 12 drive threaded rod 11 rotations of cranking hand to rotate, threaded rod 11 rotates and drives cylinder 9 synchronous rotation, cylinder 9 will insert the electric wire and be the winding of screw thread form and establish on cylinder 9 surface along with threaded rod 11 pivoted in, thereby accomplish the fixed of inserting the electric wire, rotate at last and change hand 13 and remove barrel 6 in toroidal core 1, the simple quick completion of whole operation process is to current transformer's circuit access, make things convenient for the maintenance and the maintenance in later stage.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A squirrel-cage hollow current transformer comprises an annular iron core (1) and a winding (2), it is characterized in that the inner side wall of the annular iron core (1) is provided with a chute (3), the inner wall of the sliding groove (3) is connected with a first lead screw (4) in a penetrating and rotating way, a driving part for fixing the outgoing wire is welded and fixed on the first lead screw (4), a first nut (5) is connected to the first lead screw (4) in a threaded manner, a cylinder body (6) is welded and fixed on the side wall of the first nut (5), a hexagonal nut (7) is welded and fixed on the side wall of the cylinder body (6), the inner wall of the cylinder body (6) is rotationally connected with a wiring component for fixing an incoming wire, the iron core is characterized in that a through hole (8) is formed in the inner wall of the cylinder (6), an insertion hole (20) is formed in the inner side wall of the annular iron core (1), and the insertion hole (20) is of an L-shaped structure.

2. The squirrel-cage air-core current transformer as claimed in claim 1, characterized in that the driving component comprises a first cone wheel (15) welded and fixed on a first lead screw (4), the inner wall of the insertion hole (20) is rotatably connected with a second lead screw (17) through a fixed block, and one end of the second lead screw (17) is welded and fixed with a second cone wheel (16).

3. The squirrel-cage air-core current transformer as claimed in claim 2, characterized in that the first cone wheel (15) and the second cone wheel (16) are meshed and connected, the second lead screw (17) is in threaded connection with a second nut (18), and the side wall of the second nut (18) is welded and fixed with a conducting strip (19) through a plurality of push rods.

4. The squirrel-cage hollow-core current transformer as claimed in claim 3, wherein the wiring component comprises a cylinder (9) rotatably connected inside the barrel (6), the inner wall of the cylinder (9) is provided with a jack (10), a threaded rod (11) is fixedly welded on the cylinder (9), and the threaded rod (11) is in threaded connection with a hexagon nut (7).

5. A squirrel-cage air-core current transformer according to claim 4, characterized in that the cylinder (9) is made of an electrically conductive material, the cylinder (9) and the conducting strips (19) are fixedly connected with wires (14), and the two wires (14) are respectively electrically connected with two ends of the winding (2).

6. The squirrel-cage hollow-core current transformer according to claim 4, characterized in that a handle (13) is welded and fixed to one end of the first lead screw (4) far away from the annular iron core (1), and a handle (12) is welded and fixed to one end of the threaded rod (11).