CN216411414U

CN216411414U - Voltage transformer transformation ratio test clamp

Info

Publication number: CN216411414U
Application number: CN202122931782.9U
Authority: CN
Inventors: 唐强; 潘海霞; 熊忠新; 张帆
Original assignee: Wuhan Moen Intelligent Electric Co ltd
Current assignee: Wuhan Moen Intelligent Electric Co ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-04-29
Anticipated expiration: 2031-11-26

Abstract

The utility model discloses a voltage transformer transformation ratio test clamp, which comprises: two fixed arms; the two fixed arms are rotatably connected through the movable shaft; the two clamping heads are connected with the fixing arm in a sliding manner through an adjusting device; the two conductive heads are fixedly arranged inside the clamping heads; the connecting wire is fixedly arranged on the side surface of the fixed arm and is electrically connected with the conductive head; two movable handles rotatably connected with the fixed arm; the two connecting blocks are fixedly connected with the movable handle and extend to the inside of the fixed arm; and the fixed shafts are fixedly connected with the connecting blocks and extend to the inner part of the fixed arm. The voltage transformer transformation ratio testing clamp provided by the utility model not only can ensure the stability of clamping, but also can avoid the condition of overlarge clamping force, and meanwhile, the clamping distance is also increased, the adaptability is better, and the voltage transformer transformation ratio testing clamp is more convenient for a user to use.

Description

Voltage transformer transformation ratio test clamp

Technical Field

The utility model relates to the technical field of voltage transformer transformation ratio testing, in particular to a pair of voltage transformer transformation ratio testing pliers.

Background

The voltage transformer PT is similar to a transformer and is an instrument for converting voltage, but the purpose of converting voltage of the transformer is to conveniently transmit electric energy, so that the capacity is very large, and the PT is generally calculated by using kilovolt-ampere or megavolt-ampere; the voltage transformer is mainly used for supplying power to a measuring instrument and a relay protection device, measuring the voltage, power and electric energy of a line, or protecting valuable equipment, a motor and a transformer in the line when the line breaks down, so that the capacity of the voltage transformer is small, generally only a few volt-ampere or dozens of volt-ampere, and not more than one thousand volt-ampere at most, the transformation ratio of the voltage transformer needs to be detected after production or during detection, and the transformation ratio can be detected by using transformation ratio testing pliers.

When the existing test clamp is used, the situations of over-tight clamping, unstable clamping or unmatched clamping distance easily occur, clamping detection is inconvenient for a user, and inconvenience is brought to the detection of the user.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a voltage transformer transformation ratio test clamp, aiming at solving the problems that the existing test clamp is easy to clamp too tightly or unmatched in clamping distance, inconvenient for clamping and detecting by a user and inconvenient for detecting by the user when in use.

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

a voltage transformer transformation ratio test clamp, comprising:

two fixed arms; and

the two fixed arms are rotatably connected through the movable shaft;

the two clamping heads are connected with the fixing arm in a sliding manner through an adjusting device;

the two conductive heads are fixedly arranged inside the clamping heads;

the connecting wire is fixedly arranged on the side surface of the fixed arm and is electrically connected with the conductive head;

two movable handles rotatably connected with the fixed arm;

the two connecting blocks are fixedly connected with the movable handle and extend to the inside of the fixed arm;

the fixing shafts are fixedly connected with the connecting blocks and extend to the inner parts of the fixing arms;

a plurality of torsion springs sleeved outside the fixed shaft;

and the connecting structure is arranged between the two movable handles and is used for connecting and separating the two movable handles.

Preferably, one end of the torsion spring extends to the inside of the movable handle, and the other end of the torsion spring extends to the inside of the fixed arm.

Preferably, the connection structure includes:

the first connecting rod is fixedly connected with one of the movable handles;

the second connecting rod is fixedly connected with the other movable handle and corresponds to the first connecting rod;

the clamping groove is formed in the side face of the second connecting rod;

and the connecting ring is rotatably connected with the first connecting rod and can rotate to the inside of the clamping groove.

Preferably, one side of the clamping groove, which is far away from the connecting ring, is an inclined surface.

Preferably, the adjusting means comprises:

the sliding groove is formed in the top of the fixing arm;

the sliding block is fixedly connected with the clamping head and is positioned in the sliding groove;

the threaded rod is rotatably arranged in the fixed arm, penetrates through the sliding block and is in threaded connection with the sliding block;

and the knob is fixedly connected with the threaded rod and is positioned outside the fixed arm.

Preferably, the sliding block is a T-shaped block and is matched with the sliding groove.

Preferably, the conductive head extends to the inside of the slider.

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

the voltage transformer transformation ratio testing clamp provided by the utility model not only can ensure the stability of clamping, but also can avoid the condition of overlarge clamping force, and meanwhile, the clamping distance is also increased, the adaptability is better, and the voltage transformer transformation ratio testing clamp is more convenient for a user to use.

Drawings

FIG. 1 is a schematic structural diagram of a voltage transformer transformation ratio testing clamp according to the present invention;

fig. 2 is an enlarged schematic view of a structure in fig. 1.

In the figure: 10 fixed arms, 11 movable shafts, 20 clamping heads, 30 conductive heads, 40 adjusting devices, 41 sliding grooves, 42 sliding blocks, 43 threaded rods, 44 knobs, 50 connecting wires, 60 movable handles, 71 connecting blocks, 72 fixed shafts, 73 torsion springs, 80 connecting structures, 81 first connecting rods, 82 second connecting rods, 83 clamping grooves and 84 connecting rings.

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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In a first embodiment, referring to fig. 1, a voltage transformer transformation ratio testing clamp includes: two fixed arms 10; and a movable shaft 11 through which the two fixed arms 10 are rotatably connected; two clamping heads 20 slidably connected with the fixing arm 10 through an adjusting device 40; two conductive heads 30 fixedly mounted inside the gripping head 20; a connecting wire 50 fixedly mounted on a side surface of the fixing arm 10 and electrically connected to the conductive head 30; two movable handles 60 rotatably connected to the fixed arm 10; two connecting blocks 71 fixedly connected with the movable handle 60 and extending to the inside of the fixed arm 10; a plurality of fixed shafts 72 fixedly connected to the connecting block 71 and extending to the inside of the fixed arm 10; a plurality of torsion springs 73 fitted around the outside of the fixed shaft 72; a connecting structure 80 provided between the two movable handles 60 for connecting and separating the two movable handles 60; one end of the torsion spring 73 extends to the inside of the movable handle 60, and the other end extends to the inside of the fixed arm 10.

The connection structure 80 includes: a first connecting rod 81 fixedly connected to one of the movable handles 60; a second connecting rod 82 fixedly connected to the other movable handle 60 and corresponding to the first connecting rod 81; a locking groove 83 opened in a side surface of the second connecting rod 82; a connection ring 84 rotatably connected to the first connection rod 81 and rotatable to the inside of the catching groove 83; the side of the locking groove 83 away from the connection ring 84 is an inclined surface.

When using, place the link between two conductive heads 30 earlier, then pinch movable handle 60, drive fixed arm 10 and holding head 20 and remove, finally can be with the link centre gripping between two conductive heads 30, after pressing from both sides tightly, it can make movable handle 60 rotate relatively fixed arm 10 to continue to rotate movable handle 60, can not give the link too big power again, rotate go-between 84 at last, make its inside that removes to draw-in groove 83, can connect successfully, thereby make two movable handle 60 be in the state of connecting, thereby after connecting the centre gripping, the too big condition of centre gripping dynamics neither can appear, the stability of the centre gripping of having also guaranteed.

In the second embodiment, referring to fig. 1-2, the same structure is not repeated, and the adjusting device 40 includes:

a slide groove 41 opened at the top of the fixing arm 10; a slider 42 fixedly connected to the gripping head 20 and positioned inside the sliding groove 41; a threaded rod 43 rotatably mounted inside the fixing arm 10, penetrating the slider 42, and threadedly coupled to the slider 42; a knob 44 fixedly connected with the threaded rod 43 and located outside the fixed arm 10; the sliding block 42 is a T-shaped block and is matched with the sliding groove 41; the conductive head 30 extends to the inside of the slider 42.

When the distance needs to be adjusted, the rotary knob 44 can drive the threaded rod 43 to rotate, so that the sliding block 42 is driven to slide, the clamping heads 20 are driven to slide, the distance between the two clamping heads 20 can be adjusted, and the device is simple to operate and convenient to adjust.

In conclusion, the ratio testing clamp for the voltage transformer provided by the utility model not only can ensure the stability of clamping, but also can avoid the condition of overlarge clamping force, and meanwhile, can clamp the distance, has better adaptability and is more convenient for a user to use.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a voltage transformer transformation ratio test pincers which characterized in that includes:

two fixed arms (10); and

the two fixed arms (10) are rotatably connected through the movable shaft (11);

two clamping heads (20) which are slidably connected with the fixing arm (10) through an adjusting device (40);

two conductive heads (30) fixedly mounted inside the clamping head (20);

a connecting wire (50) which is fixedly arranged on the side surface of the fixed arm (10) and is electrically connected with the conductive head (30);

two movable handles (60) rotatably connected to the fixed arm (10);

two connecting blocks (71) fixedly connected with the movable handle (60) and extending to the inside of the fixed arm (10);

a plurality of fixed shafts (72) which are fixedly connected with the connecting block (71) and extend to the inside of the fixed arm (10);

a plurality of torsion springs (73) which are sleeved outside the fixed shaft (72);

a connecting structure (80) disposed between the two movable handles (60) for connecting and disconnecting the two movable handles (60).

2. A voltage transformer ratio testing clamp according to claim 1, characterized in that one end of said torsion spring (73) extends to the inside of said movable handle (60) and the other end extends to the inside of said fixed arm (10).

3. A voltage transformer transformation ratio testing clamp according to claim 1, characterized in that said connection structure (80) comprises:

a first connecting rod (81) fixedly connected with one of the movable handles (60);

a second connecting rod (82) which is fixedly connected with the other movable handle (60) and corresponds to the first connecting rod (81);

a clamp groove (83) which is opened on the side surface of the second connecting rod (82);

and the connecting ring (84) is rotatably connected with the first connecting rod (81) and can rotate to the inner part of the clamping groove (83).

4. The voltage transformer transformation ratio test clamp according to claim 3, wherein a side of the clamping groove (83) far away from the connecting ring (84) is an inclined surface.

5. A voltage transformer transformation ratio testing clamp according to claim 1, characterized in that said adjusting means (40) comprise:

a sliding groove (41) which is opened at the top of the fixing arm (10);

a slider (42) fixedly connected to the gripping head (20) and positioned inside the sliding groove (41);

the threaded rod (43) is rotatably arranged in the fixed arm (10), penetrates through the sliding block (42) and is in threaded connection with the sliding block (42);

and the knob (44) is fixedly connected with the threaded rod (43) and is positioned outside the fixed arm (10).

6. A voltage transformer transformation ratio test clamp according to claim 5, characterized in that the sliding block (42) is a T-shaped block and is adapted to the sliding groove (41).

7. A voltage transformer transformation ratio testing clamp according to claim 5, characterized in that said conductive head (30) extends to the inside of said slider (42).