CN218568569U

CN218568569U - Current transformer capable of preventing electricity from being stolen

Info

Publication number: CN218568569U
Application number: CN202222574799.8U
Authority: CN
Inventors: 王力; 单晓军
Original assignee: Suzhou Hechang Electric Power Technology Co ltd
Current assignee: Suzhou Hechang Electric Power Technology Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-03-03
Anticipated expiration: 2032-09-28

Abstract

The utility model discloses an anti-electricity-theft current transformer for solve the current transformer and prevent the electric poor problem of stealing, it includes: the top of the current transformer body is provided with a protective piece, and a locking piece is arranged on the protective piece; the protection piece is equipped with the translucent cover including the dog of locating current transformer body top, the surface cover of dog, and the screw has been seted up at the top of dog, and the top of translucent cover runs through and is provided with the bolt, and the bottom of bolt extends to the inner chamber of screw. The utility model discloses a support with the help of bar-shaped instrument and execute the casting die and exert pressure, finally make the locating piece shift up in the inner chamber of recess, get into the inner chamber of recess completely until the locating piece, can be with the inner chamber of bolt screw in screw, the translucent cover installation back of finishing, take off bar-shaped instrument, the elasticity restoring force that utilizes the spring finally makes the locating piece block card to the inner chamber of constant head tank, utilize the setting of locking piece, the unable rotating bolt of common tool under the condition that does not have special bar-shaped instrument, play anti-electricity-theft purpose.

Description

Current transformer capable of preventing electricity from being stolen

Technical Field

The utility model belongs to the technical field of current transformer, particularly, relate to an anti-electricity-theft current transformer.

Background

The current transformer is an instrument for measuring by converting a large primary side current into a small secondary side current according to the electromagnetic induction principle. The current transformer is composed 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.

The patent document with the prior publication number of CN211788597U discloses an electricity stealing prevention current transformer, which is characterized in that an electricity stealing prevention box is installed outside two wire connectors and covers the two wire connectors to prevent electricity stealing, a limiting block is installed below an installation head and a connection block above the connection block, a supporting limiting rod penetrates through the connection block, an insertion slot is inserted behind the installation head and the limiting block and is adsorbed by a magnet, the magnet can ensure that the supporting limiting rod is firmly installed and is not easy to take out, the installation head and the limiting block play a role in protecting the supporting limiting rod to prevent an electricity stealing person from pulling out the supporting limiting rod, meanwhile, the supporting limiting rod penetrates through the connection block and can block a fixing bolt for installation, and the electricity stealing person is prevented from rotating the fixing bolt inside the connection block to steal electricity.

Although the anti-electricity-theft current transformer covers the two wire connectors through the anti-electricity-theft box to achieve the purpose of preventing electricity from being stolen, the anti-electricity-theft box is installed through the fixing bolt, and the fixing bolt is a common fastening part, so that an electricity thief can conveniently detach the anti-electricity-theft current transformer, and the anti-electricity-theft effect is poor.

SUMMERY OF THE UTILITY MODEL

The current transformer that exists to prior art prevents the not good problem of anti-electricity-theft effect, the utility model provides a better current transformer prevents electric larceny of anti-electricity-theft effect.

In order to realize the technical purpose, the utility model discloses a technical scheme as follows:

an electricity larceny prevention current transformer, comprising:

the top of the current transformer body is provided with a protective piece, and the protective piece is provided with a locking piece;

the protection piece comprises a stop block arranged at the top of the current transformer body, a transparent cover is covered on the surface of the stop block, a screw hole is formed in the top of the stop block, a bolt penetrates through the top of the transparent cover, and the bottom end of the bolt extends to an inner cavity of the screw hole;

the locking piece is including offering the recess on the bolt knob, the top fixedly connected with spring of recess internal face, the bottom fixedly connected with locating piece of spring, the constant head tank has been seted up at the top of translucent cover, be equipped with the casting die on the locating piece.

Adopt above-mentioned technical scheme's an anti-electricity-theft current transformer, through support with the help of bar-shaped instrument and apply pressure the casting die and exert pressure, finally make the locating piece shift up in the inner chamber of recess, until the locating piece gets into the inner chamber of recess completely, can be with the inner chamber of bolt screw in screw, the translucent cover installation back that finishes, bar-shaped instrument is taken off, utilize the elasticity restoring force of spring finally to make the locating piece block card to the inner chamber of constant head tank, utilize the setting of locking piece, the unable rotating bolt of ordinary tool under the condition that does not have special bar-shaped instrument, play anti-electricity-theft purpose, can also prevent simultaneously that the bolt from using the condition that appears becoming flexible in vibrations environment.

Further, the current transformer body comprises a current transformer main body, a protruding block is integrally formed on one side of the top of the current transformer main body, the stop block is fixedly connected to the protruding block, a secondary wiring terminal is arranged on the protruding block, and a threading hole corresponding to the secondary wiring terminal is formed in the surface of the protruding block.

Further, the bottom fixedly connected with support of current transformer main part, the bottom fixedly connected with mounting panel of support, the mounting hole has all been seted up to the both sides of mounting panel.

Furthermore, the top of the inner cavity of the transparent cover is attached to the top of the stop block, and the front side and the rear side of the inner cavity of the transparent cover are both attached to the surfaces of the bumps.

Further, the casting die includes that the activity runs through and locates the wedge on the bolt knob, the surface of locating piece is seted up the wedge groove with wedge looks adaptation.

Furthermore, a dovetail joint is fixedly connected to the inclined surface of the wedge block, and a dovetail groove for sliding of the dovetail joint is formed in the inclined surface of the inner cavity of the wedge groove.

Furthermore, the top of the dovetail joint is movably embedded with a ball which can slide in the inner cavity of the dovetail groove.

Compared with the prior art, the utility model, following beneficial effect has:

the utility model provides an anti-electricity-theft current transformer, through support with the help of bar-shaped instrument and execute the casting die and exert pressure, finally make the locating piece shift up in the inner chamber of recess, get into the inner chamber of recess completely until the locating piece, can be with the inner chamber of bolt screw in screw, the translucent cover installation back that finishes, take off bar-shaped instrument, the elasticity that utilizes the spring restores force finally makes the locating piece block to the inner chamber of constant head tank, utilize the setting of locking piece, the unable rotating bolt of ordinary tool under the condition that does not have special bar-shaped instrument, play anti-electricity-theft purpose, can also prevent that the bolt from using the not hard up condition of appearance in the vibration environment simultaneously.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of an anti-electricity-theft current transformer;

FIG. 2 is a schematic diagram showing an open state of an anti-theft current transformer;

FIG. 3 is a schematic sectional view of a protection member of an anti-theft current transformer;

FIG. 4 is an enlarged schematic view of the current transformer for preventing fraudulent use of electricity at A in FIG. 3;

fig. 5 is a schematic sectional view of a connection structure of a positioning block and a pressing member of the current transformer for preventing electricity theft.

The symbols in the figure illustrate: 1-a current transformer body, 101-a current transformer body, 102-a bump, 103-a secondary wiring terminal, 104-a threading hole, 105-a support, 106-a mounting plate, 107-a mounting hole, 2-a protection piece, 201-a stop block, 202-a transparent cover, 203-a screw hole, 204-a bolt, 3-a locking piece, 301-a groove, 302-a spring, 303-a positioning block, 304-a positioning groove, 305-a pressing piece, 3051-a wedge block, 3052-a wedge groove, 3053-a dovetail, 3054-a dovetail groove and 3055-a ball.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

As shown in fig. 1 to 5, the present embodiment provides an electricity larceny prevention current transformer, including: the current transformer comprises a current transformer body 1, a protective part 2 for preventing burglary and a locking piece 3 for preventing looseness, wherein the protective part 2 is arranged at the top of the current transformer body 1, and the locking piece 3 is arranged on the protective part 2; wherein, the protection part 2 is including locating the dog 201 at the top of current transformer body 1, and the surface cover of dog 201 is equipped with translucent cover 202, and screw 203 has been seted up at the top of dog 201, and the top of translucent cover 202 is run through and is provided with bolt 204, and the bottom of bolt 204 extends to the inner chamber of screw 203, and the internal wall threaded connection of the surface of bolt 204 and screw 203.

The locking piece 3 is including offering the recess 301 on the bolt 204 knob, the top fixedly connected with spring 302 of recess 301 internal wall face, the vertical fixedly connected with locating piece 303 in bottom of spring 302, and the constant head tank 304 that can block and establish the locating piece 303 bottom is seted up at the top of translucent cover 202, is equipped with on the locating piece 303 and executes the casting die 305.

For convenient wiring, the current transformer body 1 comprises a current transformer main body 101, a bump 102 is integrally formed on one side of the top of the current transformer main body 101, a stopper 201 is fixedly connected to the bump 102, two symmetrical secondary wiring terminals 103 using the stopper 201 as an axis are arranged on the bump 102, and a threading hole 104 corresponding to the secondary wiring terminals 103 is formed in the surface of the bump 102.

Wherein, the bottom fixedly connected with support 105 of current transformer main part 101, the bottom fixedly connected with mounting panel 106 of support 105, mounting hole 107 has all been seted up to the both sides of mounting panel 106, utilizes the cooperation of support 105, mounting panel 106 and mounting panel 106 to use, can play the supporting role to current transformer main part 101, and convenient follow-up current transformer main part 101 is installed fixedly.

In order to improve the stability of the current transformer for preventing electricity theft, the top of the inner cavity of the transparent cover 202 is attached to the top of the stop block 201, and the front side and the rear side of the inner cavity of the transparent cover 202 are both attached to the surfaces of the convex blocks 102.

In order to unlock the pressing member 305, the pressing member 305 includes a wedge block 3051 horizontally and movably disposed on the knob of the bolt 204, the wedge block 3051 is slidably connected with a through hole in the knob of the bolt 204, and a wedge groove 3052 matched with the wedge block 3051 is formed in the surface of the positioning block 303. Through the technical scheme, when the wedge block 3051 is pressed towards the positioning block 303, the positioning block 303 can move upwards under the inclined surface action of the wedge block 3051 and the wedge groove 3052, and the bolt 204 can be unlocked.

Wherein, in order to prevent that wedge 3051 from the inner chamber slippage of wedge 3052, fixedly connected with forked tail 3053 on the inclined plane of wedge 3051, offer the gliding dovetail 3054 of confession forked tail 3053 on the inclined plane of wedge 3052 inner chamber. Through above-mentioned technical scheme, utilize dovetail 3053 and dovetail 3054's cooperation to use, can play limiting displacement to wedge 3051, effectively prevent that wedge 3051 from the inner chamber slippage of wedge 3052.

In order to improve the flexibility of the dovetail 3053 when the dovetail 3053 slides in the inner cavity of the dovetail 3054, the ball 3055 capable of sliding in the inner cavity of the dovetail 3054 is movably embedded in the top of the dovetail 3053, so that the friction between the dovetail 3053 and the dovetail 3054 can be reduced by the ball 3055, the flexibility of the dovetail 3053 when the dovetail 3054 slides in the inner cavity of the dovetail 3054 is improved, and the subsequent wedge 3051 can be automatically reset under the action force of the spring 302.

The structure principle is as follows: the transparent cover 202 is covered on the bump 102, so that the stopper 201 and the secondary wiring terminal 103 are both arranged in the inner cavity of the transparent cover 202, and then the wedge 3051 is abutted against the wedge 3051 by virtue of a rod-shaped tool and is pressed towards the direction of the positioning block 303, so that the inner cavity of the through hole of the wedge 3051 on the knob of the bolt 204 horizontally slides, under the inclined surface action of the wedge 3051 and the wedge groove 3052, the wedge 3051 drives the positioning block 303 to move upwards in the inner cavity of the groove 301 until the positioning block 303 completely enters the inner cavity of the groove 301, the spring 302 is stressed and contracted, then the bolt 204 is screwed into the inner cavity of the screw hole 203, and further the installation operation of the transparent cover 202 is completed, at the moment, the rod-shaped tool is taken down, the positioning block 303 is finally clamped in the inner cavity of the positioning groove 304 by utilizing the elastic restoring force of the spring 302, the purpose of preventing electricity stealing is achieved, and meanwhile, and the situation that the bolt 204 is loosened in the vibration environment can be prevented.

The above detailed description is provided for the anti-electricity-theft current transformer provided by the application. The description of the specific embodiments is only intended to facilitate an understanding of the methods of the present application and their core concepts. It should be noted that, for those skilled in the art, without departing from the principle of the present application, the present application can also make several improvements and modifications, and those improvements and modifications also fall into the protection scope of the claims of the present application.

Claims

1. An electricity larceny prevention current transformer, comprising:

the current transformer comprises a current transformer body (1), wherein a protection piece (2) is arranged at the top of the current transformer body, and a locking piece (3) is arranged on the protection piece (2);

the protection piece (2) comprises a stop block (201) arranged at the top of the current transformer body (1), a transparent cover (202) covers the surface of the stop block (201), a screw hole (203) is formed in the top of the stop block (201), a bolt (204) penetrates through the top of the transparent cover (202), and the bottom end of the bolt (204) extends to an inner cavity of the screw hole (203);

the locking piece (3) comprises a groove (301) formed in a knob of the bolt (204), a spring (302) is fixedly connected to the top of the inner wall surface of the groove (301), a positioning block (303) is fixedly connected to the bottom end of the spring (302), a positioning groove (304) is formed in the top of the transparent cover (202), and a pressing piece (305) is arranged on the positioning block (303).

2. The current transformer of claim 1, wherein: the current transformer body (1) comprises a current transformer main body (101), a bump (102) is integrally formed on one side of the top of the current transformer main body (101), the stop block (201) is fixedly connected onto the bump (102), a secondary wiring terminal (103) is arranged on the bump (102), and a threading hole (104) corresponding to the secondary wiring terminal (103) is formed in the surface of the bump (102).

3. The current transformer of claim 2, wherein: the bottom fixedly connected with support (105) of current transformer main part (101), the bottom fixedly connected with mounting panel (106) of support (105), mounting hole (107) have all been seted up to the both sides of mounting panel (106).

4. The current transformer of claim 2, wherein: the top of the inner cavity of the transparent cover (202) is attached to the top of the stop block (201), and the front side and the rear side of the inner cavity of the transparent cover (202) are both attached to the surfaces of the bumps (102).

5. The current transformer of claim 1, wherein: the pressing piece (305) comprises a wedge-shaped block (3051) movably arranged on a knob of the bolt (204) in a penetrating mode, and a wedge-shaped groove (3052) matched with the wedge-shaped block (3051) is formed in the surface of the positioning block (303).

6. The current transformer of claim 5, wherein: the dovetail block is characterized in that a dovetail joint (3053) is fixedly connected to the inclined surface of the wedge block (3051), and a dovetail groove (3054) for the dovetail joint (3053) to slide is formed in the inclined surface of the inner cavity of the wedge groove (3052).

7. The current transformer of claim 6, wherein: the top of the dovetail joint (3053) is movably embedded with a ball (3055) which can slide in the inner cavity of the dovetail groove (3054).