CN216719721U

CN216719721U - Residual current transformer

Info

Publication number: CN216719721U
Application number: CN202123156153.XU
Authority: CN
Inventors: 汤剑涛; 史佳娜; 刘旭刚; 宋国军; 张孝球; 王宇; 陈东; 李鹏; 李付亮
Original assignee: Beijing Tianheng Venture Technology Co ltd
Current assignee: Beijing Tianheng Venture Technology Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-06-10
Anticipated expiration: 2031-12-15

Abstract

The utility model relates to the technical field of current transformers, in particular to a residual current transformer, which comprises a lower ring body, wherein the bottom of the lower ring body is fixedly welded with an installation block, the outer wall of the installation block is fixedly welded with one side of a supporting plate, the top of the supporting plate is fixedly welded with a supporting device, the top of the supporting device is fixedly connected with the bottom of a lower clamping block, a lead is placed on the lower clamping block and penetrates through the inner part of the lower ring body, a positioning block is inserted into a clamping block, a positioning rod is inserted into the positioning block, so that the upper clamping block and the lower clamping block form a whole, a handle is rotated, a threaded rod is pushed to move downwards, a limiting block can limit the rotation of a connecting plate, the connecting plate cannot follow the movement of the threaded pipe and push the upper clamping block to move downwards, the lead is clamped on the lower clamping block, the guide entanglement is avoided, and the short circuit is avoided, the fire hazard can not be caused, and the convenience is brought to the work of the working personnel.

Description

Residual current transformer

Technical Field

The utility model relates to the technical field of current transformers, in particular to a residual current transformer.

Background

The residual current transformer is a detecting element of the earth leakage protector, and the main function of the residual current transformer is to detect the residual current (earth fault current such as electric shock and electric leakage) of the main circuit passing through the iron core of the transformer and convert the residual current of the primary circuit into the output voltage of the secondary circuit. The residual current transformer is one of the most critical components in the leakage protector, and in the modern fire work, the residual current transformer is often connected with a fire-proof alarm device in series, so that the residual current transformer can give an early warning together with the fire when a circuit is short-circuited and a fire disaster occurs.

Most residual current transformer's fixed structure and singleness on the existing market, when using, can not fix the wire of interlude, the wire entangles easily together, leads to the short circuit to appear in the circuit, causes the conflagration even, brings inconvenience for staff's work.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a residual current transformer to solve the problem that a wire cannot be fixed in the background technology. In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a residual current transformer, includes ring body down, the bottom fixed welding of ring body has the installation piece down, the outer wall of installation piece and one side fixed welding of backup pad, the top fixed welding of backup pad has strutting arrangement, strutting arrangement's top and the bottom fixed connection of lower fixture block, the outer wall fixed welding of ring body has the block down, the inner wall sliding connection of block has the locating lever, the top activity butt of ring body has last ring body down.

The outer wall fixed welding that the ring fitting is close to both sides has a linking piece, the bottom fixed welding of linking piece has the locating piece, the constant head tank has been seted up to the inner wall of block piece, and the outer wall sliding connection of the inner wall of constant head tank and locating piece, the inner wall card house of locating piece has the locating hole, and the inner wall of locating hole and the outer wall sliding connection of locating lever, go up the outer wall fixedly connected with fixed block that the ring fitting is close to the top, the inner wall of fixed block rotates and is connected with the threaded rod, the top block of threaded rod is connected with the handle, the outer wall threaded connection of threaded rod has the screwed pipe, the fixed welding of screwed pipe has a linking plate, the bottom fixed welding of linking plate has last fixture block, the bottom fixed welding of fixed block has the stopper, the outer wall of stopper and the outer wall activity butt of linking plate.

Preferably, strutting arrangement comprises registration arm, compression spring, damping piece and movable rod, and the one end fixed connection of the interior diapire of registration arm and compression spring, and compression spring's top and the bottom fixed connection of movable rod, and the outer wall of movable rod and the inner wall activity butt of damping piece, and the outer wall of damping piece and the inner wall fixed connection of registration arm.

Preferably, one end of the threaded rod penetrates through the top of the fixing block and extends to the bottom of the fixing block, and an external thread is arranged on the outer wall of the threaded rod positioned at the bottom of the fixing block.

Preferably, the outer wall of the handle is provided with anti-skidding lines, and the central line of the handle coincides with the central line of the threaded rod.

Preferably, the inner wall of the upper clamping block is provided with a limiting groove, and the shape and size of the upper clamping block are matched with those of the lower clamping block.

Preferably, the limiting block is a wedge-shaped limiting block, the connecting plates are V-shaped connecting plates, and the shape and the size of the V-shaped connecting plates are matched with those of the wedge-shaped limiting block.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the wire is placed on the lower clamping block and penetrates through the inner part of the lower ring body, the positioning block is inserted into the clamping block, and the positioning rod is inserted into the positioning block, so that the upper clamping block and the lower clamping block form a whole, the handle is rotated, the threaded rod pushes the threaded pipe to move downwards, the limiting block can limit the rotation of the connecting plate, the connecting plate cannot move along with the threaded pipe, the upper clamping block is pushed to move downwards, the wire is clamped on the lower clamping block, the guide entanglement is avoided, the short circuit of a circuit is avoided, the fire hazard is not caused, and the work of workers is facilitated.

According to the wire replacing device, the positioning block can be taken out of the clamping block by disassembling the positioning rod, the lower clamping block and the upper clamping block can be conveniently separated, convenience is brought to workers to replace wires, and work and life of people are facilitated.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

fig. 4 is an exploded view of the lower ring structure of the present invention.

In the figure: 1. a lower ring body; 2. mounting blocks; 3. a support plate; 4. a support device; 5. a lower clamping block; 6. a clamping block; 7. positioning a rod; 8. an upper ring body; 9. a joining block; 10. positioning a block; 11. a fixed block; 12. a threaded rod; 13. a handle; 14. a threaded pipe; 15. a connector tile; 16. an upper clamping block; 17. and a limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a worker skilled in the art based on the embodiments of the present invention without making creative efforts, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution: the utility model provides a residual current transformer, includes ring body 1 down, and the bottom fixed welding of ring body 1 has installation piece 2 down, and the outer wall of installation piece 2 and one side fixed welding of backup pad 3, the top fixed welding of backup pad 3 has strutting arrangement 4, and the top of strutting arrangement 4 and the bottom fixed connection of lower fixture block 5, the outer wall fixed welding of ring body 1 has block 6 down, and the inner wall sliding connection of block 6 has locating lever 7, and the top activity butt of ring body 1 has last ring body 8 down.

Go up the outer wall fixed welding that the ring body 8 is close to both sides and have linking up piece 9, the bottom fixed welding of linking up piece 9 has locating piece 10, the constant head tank has been seted up to the inner wall of block 6, and the inner wall of constant head tank and the outer wall sliding connection of locating piece 10, the inner wall card house of locating piece 10 has the locating hole, and the inner wall of locating hole and the outer wall sliding connection of locating lever 7, it is close to the outer wall fixedly connected with fixed block 11 at top to go up ring body 8, the inner wall of fixed block 11 rotates and is connected with threaded rod 12, the top block of threaded rod 12 is connected with handle 13, the outer wall threaded connection of threaded rod 12 has screwed pipe 14, the fixed welding of screwed pipe 14 has linking up board 15, the bottom fixed welding of linking board 15 has last fixture block 16, the bottom fixed welding of fixed block 11 has stopper 17, the outer wall of stopper 17 and the outer wall activity butt of linking up board 15.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the supporting device 4 is composed of a positioning tube, a compression spring, a damping block and a movable rod, the inner bottom wall of the positioning tube is fixedly connected with one end of the compression spring, the top end of the compression spring is fixedly connected with the bottom end of the movable rod, the outer wall of the movable rod is movably abutted against the inner wall of the damping block, the outer wall of the damping block is fixedly connected with the inner wall of the positioning tube, the rigid acting force applied to the guide can be reduced, and the service life of the guide wire is prolonged.

In this embodiment, as shown in fig. 1, 2, 3 and 4, one end of the threaded rod 12 penetrates through the top of the fixing block 11 and extends to the bottom of the fixing block 11, and an external thread is disposed on an outer wall of the threaded rod at the bottom of the fixing block 11, and the threaded rod 12 can drive the threaded pipe 14 to move up and down.

In this embodiment, as shown in fig. 1, 2, 3 and 4, the outer wall of the handle 13 is provided with anti-slip threads, and the center line of the handle 13 coincides with the center line of the threaded rod 12, so that the frictional resistance between the human body and the device is improved.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3, and fig. 4, the inner wall of the upper fixture block 16 is provided with a limiting groove, and the shape and size of the upper fixture block 16 are matched with the shape and size of the lower fixture block 5, so as to prevent the wire from displacing.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3, and fig. 4, the stopper 17 is a wedge stopper, the connecting plate 15 is a V-shaped connecting plate, and the shape and size of the V-shaped connecting plate and the shape and size of the wedge stopper are matched with each other, so that the movement of the connecting plate 15 can be restricted, and the connecting plate 15 is prevented from rotating with the threaded pipe 14.

The use method and the advantages of the utility model are as follows: when the residual current transformer works, the working process is as follows:

as shown in fig. 1, 2, 3 and 4, a wire is placed on the lower fixture block 5 and penetrates through the lower ring body 1, the positioning block 10 is inserted into the fixture block 6, the positioning rod 7 is inserted into the positioning block 10, the upper fixture block 16 and the lower fixture block 5 form a whole, the handle 13 is rotated, the threaded rod 12 pushes the threaded pipe 14 to move downwards, the limiting block 17 can limit the rotation of the connecting plate 15, the connecting plate 15 cannot move along with the threaded pipe 14 and pushes the upper fixture block 16 to move downwards, and the wire is clamped on the lower fixture block 5, so that the guide entanglement is avoided, the short circuit of a line is avoided, the fire hazard is not caused, and convenience is brought to the work of workers.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A residual current transformer, includes lower ring body (1), its characterized in that: the bottom of the lower ring body (1) is fixedly welded with an installation block (2), the outer wall of the installation block (2) is fixedly welded with one side of a support plate (3), the top of the support plate (3) is fixedly welded with a support device (4), the top of the support device (4) is fixedly connected with the bottom of a lower clamping block (5), the outer wall of the lower ring body (1) is fixedly welded with a clamping block (6), the inner wall of the clamping block (6) is slidably connected with a positioning rod (7), and the top of the lower ring body (1) is movably abutted with an upper ring body (8);

the outer wall of the upper ring body (8) close to two sides is fixedly welded with a connecting block (9), the bottom of the connecting block (9) is fixedly welded with a positioning block (10), the inner wall of the clamping block (6) is provided with a positioning groove, the inner wall of the positioning groove is connected with the outer wall of the positioning block (10) in a sliding manner, the inner wall of the positioning block (10) is clamped with a positioning hole, the inner wall of the positioning hole is connected with the outer wall of a positioning rod (7) in a sliding manner, the outer wall of the upper ring body (8) close to the top is fixedly connected with a fixing block (11), the inner wall of the fixing block (11) is connected with a threaded rod (12) in a rotating manner, the top end of the threaded rod (12) is clamped and connected with a handle (13), the outer wall of the threaded rod (12) is connected with a threaded pipe (14) in a threaded manner, the fixing weld of the threaded pipe (14) is provided with a connecting block (15), the bottom of the connecting plate (15) is fixedly welded with an upper clamping block (16), the fixed welding in bottom of fixed block (11) has stopper (17), the outer wall of stopper (17) and the outer wall activity butt of linkage plate (15).

2. The residual current transformer according to claim 1, wherein: strutting arrangement (4) comprise registration arm, compression spring, damping piece and movable rod, and the one end fixed connection of the interior diapire of registration arm and compression spring, and compression spring's top and the bottom fixed connection of movable rod, and the outer wall of movable rod and the inner wall activity butt of damping piece, and the outer wall of damping piece and the inner wall fixed connection of registration arm.

3. A residual current transformer according to claim 1, characterised in that: one end of the threaded rod (12) penetrates through the top of the fixing block (11) and extends to the bottom of the fixing block (11), and an external thread is arranged on the outer wall of the threaded rod positioned at the bottom of the fixing block (11).

4. The residual current transformer according to claim 1, wherein: the outer wall of the handle (13) is provided with anti-skidding lines, and the center line of the handle (13) is overlapped with the center line of the threaded rod (12).

5. A residual current transformer according to claim 1, characterised in that: the inner wall of the upper clamping block (16) is provided with a limiting groove, and the shape and size of the upper clamping block (16) are matched with those of the lower clamping block (5).

6. A residual current transformer according to claim 1, characterised in that: the limiting blocks (17) are wedge-shaped limiting blocks, the connecting plates (15) are V-shaped connecting plates, and the shapes and the sizes of the V-shaped connecting plates are matched with those of the wedge-shaped limiting blocks.