CN116540168B - High-safety portable polarity testing device for current transformer - Google Patents
High-safety portable polarity testing device for current transformer Download PDFInfo
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- CN116540168B CN116540168B CN202310582887.9A CN202310582887A CN116540168B CN 116540168 B CN116540168 B CN 116540168B CN 202310582887 A CN202310582887 A CN 202310582887A CN 116540168 B CN116540168 B CN 116540168B
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- 238000012360 testing method Methods 0.000 title claims abstract description 29
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 238000004804 winding Methods 0.000 claims description 29
- 230000033001 locomotion Effects 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims 2
- 230000009471 action Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000013475 authorization Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention discloses a high-safety portable current transformer polarity testing device, which relates to the field of electronic device testing, and comprises a shell, wherein a wire and a plurality of switching buttons are arranged on the shell, and a first connecting end is arranged at the end part of the wire; a plurality of second connecting ends which are arranged corresponding to the switching buttons are arranged in the shell, and the first connecting ends are connected with different second connecting ends so as to realize switching of measurement types; and a power component for driving the first connecting end to move is further arranged in the shell, and the power component is controlled to be opened or closed based on the acting force applied to the switching button. A plurality of second wiring terminals are arranged in the shell, the plurality of second wiring terminals respectively correspond to various measurement categories, the corresponding switching buttons are pressed, and the power assembly drives the first connecting end to move to the corresponding second connecting end position, so that the first connecting end is connected with the first connecting end, and the switching of different measurement categories is realized, thereby being convenient and quick.
Description
Technical Field
The invention relates to the field of electronic device testing, in particular to a high-safety portable current transformer polarity testing device.
Background
The current transformer is a known instrument for converting primary side large current into secondary side small current according to the electromagnetic induction principle to measure. Which consists of a closed core and windings. The number of turns of the primary winding is small, the number of turns of the secondary winding is large, and the secondary winding is connected in series in a circuit of current to be measured. In the relay protection debugging process of the transformer substation, the current transformer needs to be subjected to a polarity test, and the polarity test is one of important factors affecting whether power transmission is successful or not.
If the authorization notice number is CN 201804072U, the authorization date is 2011.04.20, and the patent document named current transformer polarity tester comprises a tester main body and a tester upper cover which are connected, wherein a primary equipment loop control module, a battery electric quantity display module, a CT secondary current display module and an external lead module which are connected with a storage battery are arranged in the tester main body. The polarity tester for the current transformer is simple to operate, convenient and fast, can finish work by a single person, is high in safety, embeds the power supply module into equipment, is adjustable in voltage, sets positive and negative two measuring ranges for the ammeter, can deflect towards two directions, can display in two directions, and can meet the requirements of different equipment loops.
The polarity tester for the current transformer comprises a plurality of wiring ports, wherein the interfaces are respectively used for measuring PT transformation ratio polarity, volt-ampere characteristics and CT transformation ratio polarity, when the measurement types need to be switched, a plug needs to be pulled out, and then the corresponding wiring ports are reinserted.
Disclosure of Invention
The invention aims to provide a high-safety portable current transformer polarity testing device so as to solve the defects in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a portable current transformer polarity testing arrangement of high security, includes the casing, be provided with wire and a plurality of shift knob on the casing, the tip of wire is provided with first link; a plurality of second connecting ends which are arranged corresponding to the switching buttons are arranged in the shell, and the first connecting ends are connected with different second connecting ends so as to realize switching of measurement types; and a power component for driving the first connecting end to move is further arranged in the shell, and the power component is controlled to be opened or closed based on the acting force applied to the switching button.
According to the high-safety portable current transformer polarity testing device, the plurality of switching buttons are all push-type, and the linkage piece is arranged between the plurality of switching buttons.
The portable current transformer polarity testing device with high safety, wherein the sliding seat is arranged in the shell in a sliding manner, the first connecting ends are arranged on the sliding seat, the second connecting ends are all positioned on the movement stroke of the first connecting ends, and the sliding seat is provided with a first pushing piece for pushing the first connecting ends to the second connecting ends.
The portable current transformer polarity testing arrangement of foretell high security, first impeller includes trigger piece and type frame, the sliding seat includes sliding part and push part, the spout has been seted up on the casing, the sliding seat with spout sliding connection, push part with sliding part sliding connection, type frame rigid coupling in on the push part, trigger piece rigid coupling in on the switch button, be provided with the butt portion on the type frame, based on when the switch button is in by the pressing state, the trigger piece is located on the motion stroke of butt portion.
According to the high-safety portable current transformer polarity testing device, the end part of the trigger block is arc-shaped.
According to the high-safety portable current transformer polarity testing device, two abutting parts are arranged and symmetrically arranged about the type frame.
The portable current transformer polarity testing device with high safety comprises a power assembly and a threaded rod connected with the output end of the power assembly, wherein the power assembly is fixedly connected with the inside of the shell, a connecting portion is arranged on the sliding seat, and the connecting portion is in threaded connection with the threaded rod.
The portable current transformer polarity testing arrangement of foretell high security, be provided with winding mechanism in the casing, winding mechanism includes the winding frame, be provided with the torsional spring on the winding frame, the wire includes first section and second section, first section set up in on the casing, the second section interference set up in on the winding frame, be provided with conductive slip ring on the winding frame, first section with connect through conductive slip ring between the second section.
According to the high-safety portable current transformer polarity testing device, the power supply is arranged in the shell, and the power supply is a rechargeable battery.
According to the high-safety portable current transformer polarity testing device, the handle is arranged on the shell.
In the technical scheme, the portable current transformer polarity testing device with high safety is provided with the plurality of second wiring terminals in the shell, the plurality of second wiring terminals respectively correspond to a plurality of measurement categories, the corresponding switching buttons are pressed down to start the power assembly, and the power assembly drives the first connecting end to move to the corresponding second connecting end position, so that the first connecting end is connected with the first connecting end, switching of different measurement categories is realized, and convenience and rapidness are realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic view of an external overall structure according to an embodiment of the present invention;
FIG. 2 is a schematic view of the overall structure of the interior of a housing according to another embodiment of the present invention;
FIG. 3 is a schematic view of a partial overall structure according to still another embodiment of the present invention;
FIG. 4 is a schematic top view of a portion of a structure according to another embodiment of the present invention;
fig. 5 is a schematic diagram of the overall structure of a -type rack according to another embodiment of the present invention.
Reference numerals illustrate:
1. a housing; 2. a switch button; 3. a first connection end; 4. a second connection end; 5. a sliding seat; 5.1, a connecting part; 5.2, a sliding part; 5.3, a pushing part; 5.4, an installation part; 6. a driving motor; 7. a threaded rod; 8. a chute; 9. a trigger block; 10. type rack; 10.1, an abutting portion; 11. a first spring; 12. a support frame; 13. a moving plate; 14. a first groove; 15. a butt joint rod; 16. a gear; 17. an abutment groove; 18. a second spring; 19. a second groove; 20. a third spring; 21. a locking block; 22. a locking groove; 23. an avoidance groove; 24. a handle; 25. a winding frame; 26. a first section; 27. a second section; 28. a conductive slip ring; 29. toothed plate.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
Referring to fig. 1-5, an embodiment of the present invention provides a high-safety portable current transformer polarity test device, which includes a housing 1, wherein a wire and a plurality of switch buttons 2 are arranged on the housing 1, and a first connection end 3 is arranged at an end of the wire; a plurality of second connection ends 4 which are arranged corresponding to the switching buttons 2 are arranged in the shell 1, and the first connection ends 3 are connected with different second connection ends 4 so as to realize switching of measurement types; the shell 1 is also internally provided with a power component for driving the first connecting end 3 to move, and the power component is controlled to be started or stopped based on the action force applied to the switching button 2.
Specifically, the casing 1 may be square or circular, its surface is provided with the multiunit wiring mouth, multiunit wiring mouth corresponds multiple measurement category respectively, insert the first link 3 of wire in the wiring mouth that corresponds, in order to realize the measurement of corresponding category, when measuring the category needs to be changed, extract original first link 3, then insert in the wiring mouth that needs to measure the category corresponds, in order to accomplish the switching of measuring the category, this is prior art and does not repeat, one of the core innovation point of the invention lies in, be provided with a plurality of switch button 2 on casing 1, it can be the sliding button, a plurality of switch button 2 corresponds multiple measurement category respectively, the wire is provided with two, corresponding first link 3 also is provided with two, and correspond positive and negative pole respectively, second link 4 is connected with measuring element, wire one end is provided with first link 3, the other end is connected with the current transformer that awaits measuring, first link 3 and second link 4 all can be conductive block, a plurality of second link 4 all are through the support rigid coupling on casing 1 inner bottom wall, the two contacts in order to realize the electric power device, it is connected with measuring element and can be connected to the power component through the first side of reciprocal motion, the reciprocal motion is the power component is connected to the first side of the measuring element, the reciprocal motion is the power component is realized, the reciprocal motion is corresponding to the first link 3, the power component is connected with the first side is connected through the power component is connected with the first and is easy to realize the reciprocal motion, and is connected with the power component is connected to the reciprocal, and is connected to the power component is connected to the measuring the power component is easy to the end and can be connected.
In a further embodiment, the plurality of switch buttons 2 are all push-type, and a linkage member (not shown in the figure) is disposed between the plurality of switch buttons 2, specifically, the push-type switch buttons 2 have two positions of rising and falling, and the linkage member is used for automatically resetting the switch button 2 in the falling position when one of the switch buttons 2 is in the falling position and the rest of the switch buttons 2 are pressed, such as a structure similar to that of an electric fan control button, which is not described in detail in the prior art.
When the measurement category is switched, the sliding seat 5 can horizontally slide under the action of the power component, namely, the sliding seat 5 can be contacted with the rest of the second connecting end 4 for multiple times and rubbed with the rest of the second connecting end 4 in the sliding process of the first connecting end 3, preferably, the sliding seat 5 is arranged in the sliding seat 5 in a sliding manner in the shell 1, the first connecting end 3 is arranged on the sliding seat 5, a plurality of second connecting ends 4 are all positioned on the movement stroke of the first connecting end 3, the sliding seat 5 is provided with a first pushing piece for pushing the first connecting end 3 to the second connecting end 4, namely, the first connecting end 3 is provided with a first position far away from the second connecting end 4 and a second position communicated with the second connecting end 4, and particularly, the output end of the power component is connected with the sliding seat 5, so that the sliding seat 5 can horizontally slide, the first connecting end 3 can be arranged on the sliding seat 5, the first pushing piece can be a reciprocating movement component such as a cylinder and the like, and is used for adjusting the horizontal position of the first connecting end 3, the sliding seat is arranged on the sliding seat 5, and the sliding seat is arranged on the sliding seat 5, so that the sliding seat is arranged on the first connecting end 3, and the sliding seat is not correspondingly to the first connecting end 3, and the first pushing end 3 is correspondingly connected with the first connecting end 4, and the first pushing end 4 is in the sliding seat 4, and the first position is opened, and the first position is correspondingly to the first position of the first connecting end 4, and the first connecting end 4 is opened, and the first position is normally, and the first position is opened, and the first position 3 and the sliding seat 4.
Preferably, the power component comprises a driving motor 6 and a threaded rod 7 connected with the output end of the driving motor 6, the driving motor 6 is fixedly connected in the casing 1, a chute 8 is formed in the casing 1, the sliding seat 5 is slidably connected with the chute 8, a connecting portion 5.1 is arranged on the sliding seat 5, the connecting portion 5.1 is in threaded connection with the threaded rod 7, specifically, the chute 8 is formed in the inner bottom wall of the casing 1, the sliding seat 5 can be in sliding connection with the chute 8, the driving motor 6 is fixedly arranged on the inner bottom wall of the casing 1, the connecting portion 5.1 is arranged on the side wall of the sliding seat 5, a threaded hole is formed in the driving motor 6, the threaded rod 7 at the output end of the driving motor is started to rotate, and the sliding seat 5 can be driven to move horizontally along the chute 8 under the action of the threaded hole of the threaded rod 7 and the connecting portion 5.1, and the first connecting end 3 can be driven to move synchronously when the sliding seat 5 is adjusted to move horizontally.
As a preferred embodiment of the present invention, the first pushing member includes a trigger block 9 and a type frame 10, the sliding seat 5 includes a sliding portion 5.2 and a pushing portion 5.3, the pushing portion 5.3 is slidably connected with the sliding portion 5.2, the connecting portion 5.1 is fixedly connected to the sliding portion 5.2, the bottom side of the sliding portion 5.2 is slidably connected with the chute, the power assembly drives the connecting portion 5.1 to move, so as to drive the sliding portion 5.2 to integrally move, the type frame 10 is fixedly connected to the pushing portion 5.3, the trigger block 9 is fixedly connected to the switch button 2, the type frame 10 is provided with an abutting portion 10.1, the trigger block 9 is located on the movement stroke of the abutting portion 10.1 when the switch button 2 is in the pressed state, specifically, the trigger block 9 is in an L-shaped, the vertical side thereof is fixedly connected to the bottom end of the switch button 2, the abutting portion 10.1 is a wedge-shaped surface, which is disposed at a corner of the type frame 10, the pushing part 5.3 may be square, and is slidably disposed on the upper surface of the sliding part 5.2, and is elastically disposed, that is, a first spring 11 is disposed between the pushing part 5.3 and the sliding part 5.2, the top end of the sliding part 5.2 has a protrusion, one end of the first spring 11 is fixedly connected to the sidewall of the pushing part 5.3, and the other end is fixedly connected to the protruding sidewall, so that when the measurement type needs to be adjusted, the switching button 2 of the corresponding type is pressed, so that the switching button 2 moves from the raised position to the lowered position, thereby driving the trigger block 9 to synchronously move downwards, so that the horizontal edge of the trigger block 9 descends to the same vertical height as the abutting part 10.1, the driving motor 6 is started, which drives the sliding part 5.2 to horizontally move, thereby driving the type frame 10 and the abutting part 10.1 above the sliding part to synchronously move, before the first connecting end 3 moves to the position corresponding to the second connecting end 4, the abutting part 10.1 contacts and extrudes the trigger block 9, the abutting part 10.1 is a wedge-shaped surface, and the trigger block 9 is fixed, and the pushing part 5.3 is arranged on the sliding part 5.2 in a sliding manner, so that when the abutting part 10.1 abuts against the trigger block 9, the abutting part can horizontally move, the pushing part 5.3 is driven to horizontally move and stretch the first spring 11, and the first connecting end 3 can be switched from the first position to the second position just before reaching the corresponding second connecting end 4, so that the first connecting end 3 and the corresponding second connecting end 4 can be conducted, and passive pushing in the moving process of the first connecting end 3 can be realized. After the switching is completed, the pushing part 5.3 automatically resets under the action of the spring force of the first spring 11.
Preferably, the end of the trigger block 9 is arc-shaped, and the arc-shaped end can enable the abutting process of the trigger block 9 and the abutting portion 10.1 to be smoother.
Further, the abutment portions 10.1 are provided in two and are symmetrically arranged with respect to the -type frame 10, in particular. The two abutting parts 10.1 are respectively arranged at two corners of the type frame 10, after the switching button 2 is pressed, the trigger block 9 is positioned on the movement stroke of the two abutting parts 10.1, and the effect of the arrangement is that in the process of reciprocating sliding of the abutting parts 10.1, one abutting part 10.1 is contacted with the trigger block 9 and extruded, so that the first connecting end 3 can be horizontally pushed to the second position close to the second connecting end 4 by the two reciprocating strokes.
When the first connecting end 3 and the second connecting end 4 are conductive blocks, on the one hand, poor contact is easy to be caused, on the other hand, as can be seen from the above, when the first connecting end 3 and the second connecting end 4 are connected, slight relative sliding occurs, and the sliding causes slight abrasion of the first connecting end 3 and the second connecting end 4, as another preferred embodiment of the present invention, the first connecting end 3 is a plug, the second connecting end 4 is a wiring port matched with the first connecting end 3, based on the plug being inserted into the wiring port to realize conduction between the current transformer and the measuring element, a supporting frame 12 is provided on the housing 1, a moving plate 13 is provided on the supporting frame 12 in a sliding manner, a first groove 14 matched with the bottom end of the moving plate 13 is provided on the upper surface of the supporting frame 12, the moving plate 13 can horizontally slide in the first groove 14, the second connecting ends 4 are disposed on the moving plate 13, the housing 1 is provided with second pushing members, the second pushing members are fixedly connected to the inner bottom wall of the housing 1, and are respectively disposed in one-to-one correspondence with the plurality of groups of second connecting ends 4, and may be a reciprocating driving assembly such as an electric push rod, for adjusting the horizontal positions of the moving plate 13 and the second connecting ends 4 so that a plug can be inserted into a wiring port, the effect of the arrangement is that the corresponding type of switching button 2 is pressed to start the driving motor 6, that is, when the switching button 2 is pressed, two effects are provided, one of which is to start the driving motor 6, and the other of which is to drive the trigger block 9 to move downwards when the switching button 2 descends, so that the trigger block 9 can move from a position far from the abutting part 10.1 to a movement stroke of the abutting part 10.1, the driving motor 6 transfers the first connecting end 3 to the vicinity of the position of the corresponding second connecting end 4, the trigger block 9 is contacted with the abutting part 10.1 and pressed, so that the first connecting end 3 is switched from the first position to the second position, the second position in the embodiment does not enable the first connecting end 3 to be contacted with the second connecting end 4, and the first connecting end 3 is only at a position close to the second connecting end 4 at the moment, so that the distance between the first connecting end 3 and the second connecting end 4 is reduced, the connection speed is improved, when the first connecting end 3 moves to a position corresponding to the second connecting end 4, the second pushing piece is started, namely, the first connecting end 3 moves firstly, then the second connecting end 4 starts to move, the second pushing piece pushes the second connecting end 4 to move horizontally, namely, pushes the wiring port to move horizontally, and at the moment, a plug of the first connecting end 3 can be inserted into the wiring port of the second connecting end 4, so that the conduction between the current transformer and the measuring element is realized.
As a further preferred embodiment of the present invention, the second pushing member includes a supporting rod 15, a gear 16 is rotatably disposed on the housing 1, the supporting rod 15 is fixedly connected to the gear 16, and preferably, a center position of an upper surface of the gear 16, a supporting slot 17 adapted to the supporting rod 15 is formed on the moving plate 13, the supporting slot 17 is a transverse slot, and is formed on a surface of the moving plate 13 opposite to the supporting rod 15, when the supporting rod 15 rotates, the supporting slot 17 is located on a movement stroke of the supporting rod 15, a second spring 18 is disposed between the moving plate 13 and the first groove 14, a toothed plate 29 is fixedly connected to the pushing portion 5.3, when the first connecting end 3 is in a second position, the gear 16 is located on a movement stroke of the toothed plate 29 and is engaged with the toothed plate 29, the sliding seat 5 further includes a mounting portion 5.4, the mounting portion 5.4 is slidably disposed on the pushing portion 5.3, a third spring 20 is disposed between the mounting portion 5.4 and the pushing portion 5.3, a locking member is disposed on the mounting portion 5.4, specifically, the supporting rod 15 is preferably a T-shaped rod, two ends of the supporting rod, far from the gear 16, are hemispherical, one end of the second spring 18 is fixedly connected to a sidewall of the first groove 14, the other end is fixedly connected to the moving plate 13, two third springs 20 are disposed, a second groove 19 is formed on an upper surface of the pushing portion 5.3, one ends of the two third springs 20 are fixedly connected to two sidewalls of the second groove 19, the other ends of the two third springs 20 are fixedly connected to the mounting portion 5.4, the first connecting end 3 is disposed on the mounting portion 5.4, the locking member may be a conventional locking structure for fixing the mounting portion 5.4 at a position corresponding to the moving plate 13, that is, at this time, the first connecting end 3 corresponds to a position of the second connecting end 4, the effect of this arrangement is that pressing the corresponding kind of switch button 2, starting the drive motor 6, the drive motor 6 driving the slide seat 5 to move horizontally along the chute 8, under the action of the first pushing member, the first connection end 3 moves from the first position to the second position, the corresponding pushing portion 5.3 will also move horizontally, at this time, the gear 16 is on the movement stroke of the toothed plate 29, and the two are meshed with each other, when the first connection end 3 moves to the position corresponding to the second connection end 4, the locking member makes the mounting portion 5.4 and the first connection end 3 unable to move continuously, at this time, the drive motor 6 is controlled to rotate continuously, so that the pushing portion 5.3 and the slide portion 5.2 move continuously along the chute 8 (at this time, the third spring 20 will be compressed or stretched), the pushing part 5.3 moves while driving the toothed plate 29 to move, and at this time, the gear 16 and the toothed plate 29 are in a meshed state, so that the gear 16 can be driven to rotate, the gear 16 rotates to drive the abutting rod 15 at the top of the gear, and when the abutting rod 15 rotates, one side end part of the transverse section abuts against the inner wall of the abutting groove 17, so that the horizontal acting force of the moving plate 13 is provided, the moving plate 13 can drive the second connecting end 4 to slide along the first groove 14 towards the direction of the mounting part 5.4, and compress the second spring 18, and at this time, the mounting part 5.4 and the first connecting end 3 are in a static state, and at this time, the horizontal movement of the moving plate 13 can enable the first connecting end 3 to be spliced with the second connecting end 4, so that the passive splicing of the first connecting end 3 and the second connecting end 4 is realized.
Preferably, the locking member comprises locking blocks 21, the locking blocks 21 are arranged on the mounting part 5.4 through elastic members (the stiffness coefficient of the elastic members is smaller than that of the third springs 20), specifically, the locking blocks 21 are two and symmetrically arranged about the mounting part 5.4, a gap between the two locking blocks 21 forms a locking groove 22, the size of the locking groove is matched with the size of the triggering block 9, wedge-shaped surfaces are arranged on the two locking blocks 21, the wedge-shaped surfaces are positioned on the movement stroke of the triggering block 9, and a avoiding groove 23 matched with the locking blocks 21 is formed on the type frame 10, the effect of the arrangement is that the triggering block 9 is firstly contacted and extruded with the abutting part 10.1 in the moving process, so that the type frame 10 and other parts move horizontally, then, the trigger block 9 will abut against the horizontal side wall of the -type frame 10, so that the -type frame 10 keeps sliding stably in the second position, the trigger block 9 will contact and squeeze the wedge-shaped surface of the locking block 21 in the sliding process, so that the locking block 21 contracts (and the trigger block 9 always abuts against the side wall of the -type frame 10 in the squeezing process of the locking block 21, so that the -type frame 10 and other components always slide stably in the second position), the elastic piece is compressed, after the abutment with the locking block 21 is completed, the locking block 21 automatically resets under the action of the elastic piece, at this time, the trigger block 9 is located inside the locking groove 22, passive locking of the installation part 5.4 is realized under the plugging action of the trigger rod and the locking groove 22, and the locking does not affect the continuous movement of the sliding part 5.2 and other components.
Further, after the measurement is finished, the reset key or another switching button 2 is pressed to enable the trigger block 9 to move upwards, so that the abutting effect of the trigger block 9 on the side wall of the type frame 10 disappears, and the locking effect of the trigger block 9 on the locking block 21 disappears synchronously, so that the pushing part 5.3 drives the first connecting end 3 to switch from the second position to the first position under the action of the first spring 11, so that the current transformer is disconnected from the measuring element, and because the locking effect of the trigger block 9 on the locking block 21 disappears, the mounting part 5.4 can slide in the second groove 19, and automatically resets under the action of the elastic force of the third spring 20, and the gear 16 and the moving plate 13 automatically reset under the action of the elastic force of the second spring 18.
In summary, the following strokes are provided in the process of switching the measurement categories: firstly, the abutting stroke of the trigger block 9 and the abutting part 10.1 is used for switching the first connecting end 3 from the first position to the second position, secondly, the abutting stroke of the side walls of the trigger block 9 and the type frame 10 is used for enabling the type frame 10 and the first connecting end 3 to slide under the second position, thirdly, the locking stroke of the trigger block 9 and the locking block 21 on the mounting part 5.4 is used for enabling the first connecting end 3 and the second connecting end 4 to be always in the relative position when the sliding seat 5 moves, fourthly, the meshing stroke of the gear 16 and the toothed plate 29 is used for enabling the abutting rod 15 to abut against the abutting groove 17, so that the moving plate 13 is driven to horizontally move to drive the second connecting end 4 to be in plug-in connection with the first connecting end 3, fifthly, the trigger block 9 is moved upwards, and the first connecting end 3 is released from plug-in connection with the second connecting end 4 under the elastic force of the first spring 11.
Preferably, a power source (not shown in the figure) is disposed in the casing 1, and the power source is a rechargeable battery, specifically, a conventional dry battery is replaced by a rechargeable lithium battery, so that the power source can be reused, and the use cost is reduced while the environmental pollution is reduced.
Further, the handle 24 is provided on the housing 1, the handle 24 is provided on the outer side wall of the housing 1, and when the portable device is carried, a person can hold the handle 24 to pick up the device, and the portable device is convenient to carry.
Preferably, a winding mechanism is provided in the housing 1, the winding mechanism includes a winding frame 25, a torsion spring (not shown in the figure) is provided on the winding frame 25, the wire includes a first section 26 and a second section 27, the first section 26 is disposed on the housing 1, the second section 27 is disposed on the winding frame 25 in an interference manner, a conductive slip ring 28 is provided on the winding frame 25, the first section 26 and the second section 27 are connected through the conductive slip ring 28, the winding frame 25 is fixedly connected to the inner bottom wall of the housing 1 through a base, the first section 26 is fixedly connected to the side wall of the housing 1, the conductive slip ring 28 is disposed on the central axis of the winding frame 25, and the effect of the arrangement is that when the power assembly drives the first connecting end 3 to move away from the winding frame 25, the winding frame 25 rotates under the action of the stretching of the second section 27, and when the power assembly drives the first connecting end 3 to move near the winding frame 25, the elastic force of the winding is released, so as to drive the torsion spring to rotate automatically, and the second connecting end 27 is prevented from being randomly distributed in the housing 27 when the second section is switched to the housing 1.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (8)
1. The portable current transformer polarity testing device with high safety comprises a shell, and is characterized in that a wire and a plurality of switching buttons are arranged on the shell, and a first connecting end is arranged at the end part of the wire;
a plurality of second connecting ends which are arranged corresponding to the switching buttons are arranged in the shell, and the first connecting ends are connected with different second connecting ends so as to realize switching of measurement types;
the shell is internally provided with a power component for driving the first connecting end to move, and the power component is controlled to be opened or closed based on the acting force applied to the switching button;
the shell is provided with a sliding seat in a sliding manner, the first connecting ends are arranged on the sliding seat, the second connecting ends are all positioned on the movement stroke of the first connecting ends, and the sliding seat is provided with a first pushing piece for pushing the first connecting ends to the second connecting ends;
the first pushing piece comprises a trigger block and a type frame, the sliding seat comprises a sliding part and a pushing part, a sliding groove is formed in the shell, the sliding seat is in sliding connection with the sliding groove, the pushing part is in sliding connection with the sliding part, the type frame is fixedly connected to the pushing part, the trigger block is fixedly connected to the switching button, an abutting part is arranged on the type frame, and the trigger block is located on the movement stroke of the abutting part based on the fact that the switching button is in a pressed state;
the triggering block is L-shaped, the vertical edge of the triggering block is fixedly connected to the bottom end of the switching button, the abutting part is a wedge-shaped surface and is arranged at the corner of the -shaped frame, the pushing part is square and is arranged on the upper surface of the sliding part in a sliding manner, a first spring is arranged between the pushing part and the sliding part, the top end of the sliding part is provided with a bulge, one end of the first spring is fixedly connected to the side wall of the pushing part, and the other end of the first spring is fixedly connected to the bulge side wall;
the first connecting end is a plug, the second connecting end is a wiring port matched with the first connecting end, the current transformer and the measuring element are conducted based on the fact that the plug is inserted into the wiring port, the shell is provided with a support frame, a movable plate is arranged on the support frame in a sliding mode, a first groove matched with the bottom end of the movable plate is formed in the upper surface of the support frame, the movable plate can horizontally slide in the first groove, the second connecting end is arranged on the movable plate, and a second pushing piece is arranged on the shell;
the second pushing piece comprises a supporting rod, a gear is rotationally arranged on the shell, the supporting rod is fixedly connected to the gear, a supporting groove matched with the supporting rod is formed in the moving plate, the supporting groove is a transverse groove and is formed in the surface of the moving plate opposite to the supporting rod, when the supporting rod rotates, the supporting groove is positioned on the moving stroke of the supporting rod, a second spring is arranged between the moving plate and the first groove, a toothed plate is fixedly connected to the pushing part, the gear is positioned on the moving stroke of the toothed plate and meshed with the toothed plate based on the fact that the first connecting end is positioned at a second position, the sliding seat further comprises a mounting part, the mounting part is slidably arranged on the pushing part, a third spring is arranged between the mounting part and the pushing part, the supporting rod is a T-shaped rod, two ends of the supporting rod far from the gear are hemispherical, one end of the second spring is fixedly connected to the side wall of the first groove, the other end of the second spring is fixedly connected to the side wall of the first groove, two ends of the second spring are fixedly connected to the second groove are respectively arranged on the two ends of the second groove, and the second spring is fixedly connected to the second end, and the third spring is fixedly connected to the second groove is respectively arranged on the two ends;
the locking piece includes the locking piece, the locking piece set up in through the elastic component on the installation department, the stiffness coefficient of elastic component is less than the stiffness coefficient of third spring, the locking piece has two, and about installation department symmetrical arrangement, the clearance between two locking pieces forms the locking groove, its size and the size looks adaptation of triggering the piece, all be provided with the wedge face on two locking pieces, the wedge face is located the motion journey of triggering the piece, and type frame is last to be offered and dodge the groove with locking piece looks adaptation.
2. The polarity test device of a high-safety portable current transformer according to claim 1, wherein a plurality of the switching buttons are all push-type, and a linkage is arranged between the plurality of switching buttons.
3. The high security portable current transformer polarity test device of claim 1, wherein the trigger block has an arcuate end.
4. The high-safety portable current transformer polarity test device according to claim 1, wherein two of the abutting portions are provided and symmetrically arranged about a type rack.
5. The high-safety portable current transformer polarity test device according to claim 1, wherein the power assembly comprises a driving motor and a threaded rod connected with the output end of the driving motor, the driving motor is fixedly connected in the shell, and a connecting part is arranged on the sliding seat and is in threaded connection with the threaded rod.
6. The high-safety portable current transformer polarity test device according to claim 1, wherein a winding mechanism is arranged in the shell, the winding mechanism comprises a winding frame, a torsion spring is arranged on the winding frame, the wire comprises a first section and a second section, the first section is arranged on the shell, the second section is arranged on the winding frame in an interference manner, a conductive slip ring is arranged on the winding frame, and the first section is connected with the second section through the conductive slip ring.
7. The high-safety portable current transformer polarity test device according to claim 1, wherein a power source is arranged in the housing, and the power source is a rechargeable battery.
8. The polarity test device of a high security portable current transformer according to claim 1, wherein a handle is provided on the housing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310582887.9A CN116540168B (en) | 2023-05-22 | 2023-05-22 | High-safety portable polarity testing device for current transformer |
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| CN202310582887.9A CN116540168B (en) | 2023-05-22 | 2023-05-22 | High-safety portable polarity testing device for current transformer |
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| CN116540168B true CN116540168B (en) | 2024-02-02 |
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| CN116540168A (en) | 2023-08-04 |
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