CN212085260U

CN212085260U - Novel current transformer test rod

Info

Publication number: CN212085260U
Application number: CN202020902694.9U
Authority: CN
Inventors: 李敏
Original assignee: Wuhan Zhongyuan Huihe Technology Co ltd
Current assignee: Wuhan Zhongyuan Huihe Technology Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2020-12-04
Anticipated expiration: 2030-05-26

Abstract

The utility model discloses a novel current transformer test rod, its structure includes the tail-stock, the grab handle, the antiskid cover, first connector, insulating extension rod, first connecting groove, the second connector, the test post, the second spread groove, the metallic conductor pendant, the connection terminal, the wiring groove, terminal and fixed establishment, the utility model discloses a set up fixed establishment at the wiring inslot side, the elasticity that resumes deformation through reset spring promotes the second rack and resets, makes the second rack pass through the gear and drives first rack roll-off cavity in, makes first rack carry out the centre gripping through the clamping piece to the crocodile clip and fixes, prevents to detect the during operation wire and drop, has set up the friction pad through the one side that is close to the wiring groove middle part at the clamping piece, makes the clamping piece can be better fix the crocodile clip through the friction pad to start better reinforcement effect.

Description

Novel current transformer test rod

Technical Field

The utility model relates to a test bar technical field, concretely relates to novel current transformer test bar.

Background

With the continuous development of power grids, the number of managed devices is also increased, polarity test work is also performed in field work in the same way, and in an electric power system, the polarity of a current transformer has important significance on the correct action of relay protection, the power flow calculation of the electric power system and the correct measurement of electric power loads, so that a test rod is used for testing the polarity of the current transformer after the work of newly inputting and replacing each line, changing the transformation ratio of the current transformer and the like.

When the existing test rod is used, a wire of a tester needs to be connected into a wire holder through an alligator clamp, then the metal is hooked to the two stages of the current transformer to be subjected to polarity test, the wire is not easily fastened in the wire holder through the alligator clamp, the working process is easy to loosen, and the test work is not easy to be carried out.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome prior art not enough, present a novel current transformer test bar, need pass through in the crocodile clamp inserts the wire holder with the wire of tester when having solved current test bar and using, then collude the metal and carry out the polarity test to current transformer's two-stage on, nevertheless only press from both sides through the crocodile and be difficult for fastening the wire in the wire holder, the during operation is not hard up easily, is difficult for the problem of going on of test work.

(II) technical scheme

The utility model discloses a following technical scheme realizes: the utility model provides a novel current transformer test rod, which comprises a tail rod, a grab handle, an anti-skid sleeve, a first connector, an insulating extension rod, a first connecting groove, a second connector, a test column, a second connecting groove, a metal conductor pendant, a wire holder, a wire binding post and a fixing mechanism, wherein the surface of the tail rod is provided with the grab handle, the fixing mechanism is arranged at the inner side of the wire holder, the fixing mechanism comprises a cavity, a gear, a first rack, a first chute, a first slider, a clamping block, a second rack, a second slider, a second chute, a reset spring and a pressing mechanism, the inner part of the front end of the wire holder is provided with a cavity, the middle part of the cavity is in rotating fit with the gear through a rotating shaft, the first rack is arranged at the right side of the cavity, the first rack is meshed with the outer surface of the gear, and the first rack, the utility model discloses a wire connection terminal, including cavity, first rack, gear, reset spring, wiring seat, clamping piece, gear, reset spring, second rack, reset spring one end and second rack fixed connection, the cavity right side is provided with first spout, the welding of first rack right side has first slider to first slider slides along first spout is inboard, the welding of first rack rear end has clamping block, the cavity left side is provided with the second rack, the second rack meshes with the gear surface mutually, second rack left side is fixed with the second slider through electric welding, the cavity left side is provided with the second spout to the second slider slides along second spout is inboard, reset spring one end and second rack fixed connection to the reset spring other end and cavity fixed connection, the wiring seat front side is provided with pressing.

Further, the grab handle surface is provided with the antiskid cover, the tail-bar left end is provided with first connector, insulating extension rod right-hand member is provided with first spread groove, threaded connection is carried out with first spread groove inboard to first connector, insulating extension rod left end is provided with the second connector, the test column right-hand member is provided with the second spread groove, bolted connection is carried out with second spread groove inboard to the second connector, the welding of test column left end has the metallic conductor pendant, the test column top is provided with the connection terminal, the connection terminal right side is provided with the wiring groove, the terminal is installed to the wiring groove inboard.

Further, pressing means includes sleeve, press button and mounting groove, the connection terminal front side is fixed with the sleeve through the adhesive, the press button slides along the sleeve is inboard, the press button rear side is provided with the mounting groove, the second rack runs through the cavity and extends to the sleeve inboard and with the inboard fixed connection of mounting groove.

Furthermore, the fixing mechanisms are arranged in two, and the fixing mechanisms are symmetrically arranged along the front side and the rear side of the wire holder.

Furthermore, one side of the clamping block, which is close to the middle part of the wiring groove, is provided with a friction gasket, and the friction gasket is trapezoidal.

Furthermore, the front end of the press button is provided with a sponge gasket, and the sponge gasket is circular.

Furthermore, a layer of waterproof and anti-oxidation layer is coated on the outer surface of the clamping block, and the clamping block is cuboid.

Furthermore, the first sliding groove and the central line of the first sliding block are positioned on the same horizontal direction line, and the surface of the first sliding block is smooth and free of burrs.

Furthermore, the friction gasket is made of polyurethane, and has good stability, chemical resistance, rebound resilience and mechanical property and excellent wear resistance.

Furthermore, the return spring is made of alloy spring steel, so that the heat resistance and the corrosion resistance of the return spring are greatly enhanced, and the service life of the return spring is prolonged.

(III) advantageous effects

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

the method has the advantages that: a novel current transformer test rod through having set up fixed establishment at the wiring inslot side, resumes the elasticity of deformation through reset spring and promotes the second rack and reset, makes in the second rack passes through the gear drives first rack roll-off cavity, makes first rack carry out the centre gripping through the clamping piece to the crocodile clamp and fixes, prevents to detect the during operation wire and drops.

The advantages are two: a novel current transformer test bar has set up pressing mechanism through both sides around the connection terminal, through the button of pressing of both sides around pressing the connection terminal, makes the button press in the sleeve inboard and promote the second rack and withdraw in the cavity, does benefit to in the better cavity of pressing the second rack of user, prevents to press against the hand during the use.

The advantages are three: a novel current transformer test rod has set up the friction gasket through the one side that is close to the wiring groove middle part at the clamping block, makes that the clamping block can be better fix the alligator clip through the friction gasket to start better reinforcement effect.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the front view section splitting structure of the present invention;

FIG. 3 is a schematic diagram of the right-side view structure of the wire holder of the present invention;

fig. 4 is a schematic top view of the cross-sectional structure of the fixing mechanism of the present invention;

fig. 5 is an enlarged schematic view of the structure at a of the present invention;

fig. 6 is a schematic view of a top-view cross-sectional structure of the pressing mechanism of the present invention.

In the figure: a tail rod-1, a grab handle-2, an anti-skid sleeve-3, a first connecting head-4, an insulating extension rod-5, a first connecting groove-6, a second connecting head-7, a testing column-8, a second connecting groove-9, a metal conductor pendant-10, a wire holder-11, a wire connecting groove-12, a wire connecting post-13, a fixing mechanism-14 and a cavity-141, gear-142, first rack-143, first runner-144, first slider-145, clamping block-146, friction pad-1461, second rack-147, second slider-148, second runner-149, return spring-1410, pressing mechanism-1411, sleeve-14111, press button-14112, sponge pad-141121, and mounting groove-14113.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the present invention provides a novel current transformer testing rod: the testing device comprises a tail rod 1, a grab handle 2, an anti-skidding sleeve 3, a first connecting head 4, an insulating extension rod 5, a first connecting groove 6, a second connecting head 7, a testing column 8, a second connecting groove 9, a metal conductor pendant 10, a wire holder 11, a wire holder 12, a wire terminal 13 and a fixing mechanism 14, wherein the grab handle 2 is arranged on the surface of the tail rod 1, the fixing mechanism 14 is arranged on the inner side of the wire holder 12, the fixing mechanism 14 comprises a cavity 141, a gear 142, a first rack 143, a first sliding groove 144, a first sliding block 145, a clamping block 146, a second rack 147, a second sliding block 148, a second sliding groove 149, a return spring 1410 and a pressing mechanism 1411, a cavity 141 is arranged inside the front end of the wire holder 11, the middle part of the cavity 141 is in rotating fit with the gear 142 through a rotating shaft, the first rack 143 is arranged on the right side of the cavity 141, the first rack 143 is meshed with the outer surface of the gear, the right side of the cavity 141 is provided with a first sliding groove 144, the right side of the first rack 143 is welded with a first sliding block 145, the first sliding block 145 slides along the inner side of the first sliding groove 144, the rear end of the first rack 143 is welded with a clamping block 146, the left side of the cavity 141 is provided with a second rack 147, the second rack 147 is meshed with the outer surface of the gear 142, the left side of the second rack 147 is fixed with a second sliding block 148 through electric welding, the left side of the cavity 141 is provided with a second sliding groove 149, the second sliding block 148 slides along the inner side of the second sliding groove 149, one end of a return spring 1410 is fixedly connected with the second rack 147, the other end of the return spring 1410 is fixedly connected with the cavity 141, and the front side of.

Wherein, 2 surfaces of grab handle are provided with antiskid cover 3, 1 left end of tail-stock is provided with first connecting

head

4, 5 right-hand members of insulating extension rod are provided with first spread groove 6, first connecting head 4 carries out threaded connection with first spread groove 6 inboard, 5 left ends of insulating extension rod are provided with

second connector

7, 8 right-hand members of test post are provided with second spread groove 9, bolted connection is carried out with second spread groove 9 inboard to

second connector

7, 8 left end welding of test post have

metallic conductor pendant

10, 8 tops of test post are provided with

connection terminal

11, 11 right sides of connection terminal are provided with wiring groove 12, terminal 13 is installed to wiring groove 12 inboard.

The pressing mechanism 1411 comprises a sleeve 14111, a pressing button 14112 and a mounting groove 14113, wherein the front side of the wire holder 11 is fixed with the sleeve 14111 by adhesive, the pressing button 14112 slides along the inner side of the sleeve 14111, the rear side of the pressing button 14112 is provided with a mounting groove 14113, and the second rack 147 extends through the cavity 141 to the inner side of the sleeve 14111 and is fixedly connected with the inner side of the mounting groove 14113.

Wherein, fixed establishment 14 is provided with two altogether, and fixed establishment 14 sets up along wire holder 11 front and back bilateral symmetry, does benefit to fixed establishment 14 better to the wire fix.

Wherein, clamping block 146 is provided with friction pad 1461 near one side in the middle part of wire casing 12, and friction pad 1461 is trapezoidal, does benefit to clamping block 146 better fixes the crocodile clip, and it takes off when preventing its use.

Wherein, the press button 14112 front end is provided with sponge gasket 141121, and sponge gasket 141121 is circular, does benefit to that the user is better presses press button 14112, prevents to press against the hand when using.

The outer surface of the clamping block 146 is coated with a waterproof anti-oxidation layer, and the clamping block 146 is cuboid, so that rusting or oxidative corrosion of the outer surface of the clamping block 146 caused by long-term use is prevented.

The center lines of the first sliding groove 144 and the first sliding block 145 are on the same horizontal direction line, and the surface of the first sliding block 145 is smooth and free of burrs, so that the first sliding block 145 can better slide along the inner side of the first sliding groove 144.

The friction pad 1461 is made of polyurethane, and has good stability, chemical resistance, rebound resilience, mechanical property and excellent wear resistance.

The return spring 1410 is made of alloy spring steel, so that the heat resistance and the corrosion resistance of the return spring are greatly enhanced, and the service life of the return spring is prolonged.

The alloy spring steel material that reset spring 1410 adopted in this patent is the special alloy steel that makes all kinds of springs and other elastic component, and alloy spring steel material has good comprehensive properties, good metallurgical quality (high pure and clean degree and homogeneity), good surface quality (strict control surface defect and decarbonization), accurate appearance and size.

The working principle is as follows: when the measuring rod is used, in the first step, the tail rod 1 is taken out, the first connecting head 4 is connected to the inner side of the first connecting groove 6, then the tail rod 1 is rotated to enable the first connecting head 4 to be screwed into the inner side of the first connecting groove 6, so that the insulating extension rod 5 and the tail rod 1 are fixed, and multiple sections of insulating extension rods 5 can be connected according to the working environment so as to enable the measuring rod to obtain enough length; secondly, the second connector 7 is connected to the inner side of the second connecting groove 9, and the testing column 8 is rotated to enable the second connector 7 to be screwed into the inner side of the second connecting groove 9, so that the testing column 8 is fixed at the top end of the multi-section insulating extension rod 5; thirdly, pressing down the press buttons 14112 on the front and rear sides of the wire holder 11, so that the press buttons 14112 are pressed into the inner side of the sleeve 14111 and push the second rack 147 to retract into the cavity 141, the second rack 147 slides towards the inner side of the cavity 141 along the second sliding slot 149 through the second slider 148, meanwhile, the second rack 147 pushes the gear 142 to rotate, the gear 142 drives the first rack 143 to slide, the first rack 143 slides towards the inner side of the cavity 141 along the first sliding slot 144 through the first slider 145, and the first rack 143 drives the clamping blocks 146 on the two sides to unfold; fourthly, clamping a lead to the surface of the binding post 13 through an alligator clip, then loosening the press button 14112, pushing the second rack 147 to reset through the elastic force of the reset spring 1410 which restores deformation, enabling the second rack 147 to drive the first rack 143 to slide out of the cavity 141 through the gear 142, enabling the first rack 143 to clamp and fix the alligator clip through the clamping block 146, and enabling the clamping block 146 to better fix the alligator clip through the friction gasket 1461 arranged on one side of the clamping block 146 close to the middle of the wiring slot 12, so as to prevent the alligator clip from loosening when in use; and fifthly, holding the grab handle 2 to lift the insulating extension rod 5, so that the metal conductor hanging piece 10 is hung to the two poles of the current transformer, and the detector judges whether the secondary wiring of the current transformer is correct or not.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A novel current transformer testing rod comprises a tail rod (1), a grab handle (2), an anti-skidding sleeve (3), a first connecting head (4), an insulating extension rod (5), a first connecting groove (6), a second connecting head (7), a testing column (8), a second connecting groove (9), a metal conductor pendant (10), a wire holder (11), a wire connecting groove (12) and a wiring terminal (13), wherein the grab handle (2) is installed on the surface of the tail rod (1);

the method is characterized in that: the wire holder is characterized by further comprising a fixing mechanism (14), the fixing mechanism (14) is arranged on the inner side of the wire connecting groove (12), the fixing mechanism (14) comprises a cavity (141), a gear (142), a first rack (143), a first sliding groove (144), a first sliding block (145), a clamping block (146), a second rack (147), a second sliding block (148), a second sliding groove (149), a return spring (1410) and a pressing mechanism (1411), the cavity (141) is arranged inside the front end of the wire holder (11), the middle of the cavity (141) is in rotating fit with the gear (142) through a rotating shaft, the first rack (143) is arranged on the right side of the cavity (141), the first rack (143) is meshed with the outer surface of the gear (142), the first rack (143) penetrates through the cavity (141) and extends to the inner side of the wire connecting groove (12), and a first sliding groove (144) is arranged on the right side of the cavity (141), the right side of the first rack (143) is welded with a first sliding block (145), the first sliding block (145) slides along the inner side of the first sliding groove (144), the rear end of the first rack (143) is welded with a clamping block (146), the left side of the cavity (141) is provided with a second rack (147), the second rack (147) is meshed with the outer surface of the gear (142), the left side of the second rack (147) is fixed with the second sliding block (148) through electric welding, the left side of the cavity (141) is provided with a second sliding groove (149), the second sliding block (148) slides along the inner side of the second sliding groove (149), one end of the return spring (1410) is fixedly connected with the second rack (147), the other end of the return spring (1410) is fixedly connected with the cavity (141), and the front side of the wire holder (11) is provided with a pressing mechanism (1411).

2. The novel current transformer test rod of claim 1, wherein: grab handle (2) surface is provided with antiskid cover (3), tail-bar (1) left end is provided with first connecting head (4), insulating extension rod (5) right-hand member is provided with first spread groove (6), threaded connection is carried out with first spread groove (6) inboard in first connecting head (4), insulating extension rod (5) left end is provided with second connector (7), test column (8) right-hand member is provided with second spread groove (9), bolted connection is carried out with second spread groove (9) inboard in second connector (7), the welding of test column (8) left end has metallic conductor pendant (10), test column (8) top is provided with connection terminal (11), connection terminal (11) right side is provided with wiring groove (12), terminal (13) are installed to wiring groove (12) inboard.

3. The novel current transformer test rod of claim 1, wherein: the pressing mechanism (1411) comprises a sleeve (14111), a pressing button (14112) and a mounting groove (14113), the front side of the wire holder (11) is fixed with the sleeve (14111) through an adhesive, the pressing button (14112) slides along the inner side of the sleeve (14111), the rear side of the pressing button (14112) is provided with a mounting groove (14113), and the second rack (147) penetrates through the cavity (141) and extends to the inner side of the sleeve (14111) and is fixedly connected with the inner side of the mounting groove (14113).

4. The novel current transformer test rod of claim 1, wherein: the fixing mechanisms (14) are arranged in two, and the fixing mechanisms (14) are symmetrically arranged along the front side and the rear side of the wire holder (11).

5. The novel current transformer test rod of claim 1, wherein: and a friction pad (1461) is arranged on one side of the clamping block (146) close to the middle part of the wiring groove (12), and the friction pad (1461) is trapezoidal.

6. The novel current transformer test rod of claim 3, wherein: the front end of the press button (14112) is provided with a sponge gasket (141121), and the sponge gasket (141121) is circular.

7. The novel current transformer test rod of claim 1, wherein: the outer surface of the clamping block (146) is coated with a waterproof anti-oxidation layer, and the clamping block (146) is cuboid.

8. The novel current transformer test rod of claim 1, wherein: the first sliding groove (144) and the center line of the first sliding block (145) are on the same horizontal direction line, and the surface of the first sliding block (145) is smooth and free of burrs.