CN214895766U

CN214895766U - Multifunctional testing device for mutual inductor

Info

Publication number: CN214895766U
Application number: CN202121433001.7U
Authority: CN
Inventors: 白林; 孙长清; 白博文
Original assignee: Kunshan Guanxiang Electronic Technology Co ltd
Current assignee: Kunshan Guanxiang Electronic Technology Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2021-11-26
Anticipated expiration: 2031-06-25

Abstract

The utility model discloses a multi-functional testing arrangement of mutual-inductor, including last frame, lower frame and tester main part, it is located to operate the computer seat directly over the frame down, go up the inside intermediate position department of frame and seted up the standing groove, the tester main part is placed the inside of standing groove, the installation cavity has been seted up to the bottom of the inboard of going up the frame, two notches have been seted up to the bottom of standing groove, the installation cavity is through two the notch with the inside intercommunication of standing groove, the inside movable mounting of installation cavity has the bull stick, the intermediate position department of bull stick is provided with the stopper, the surface of bull stick is provided with two sections reverse screw threads, two sections reverse screw threads in bull stick surface with the stopper is symmetrical distribution of each other for the symmetry point. The utility model discloses a set up a series of structures and make this device have and be convenient for fix the tester main part and be convenient for highly adjusting's the characteristics to the tester main part.

Description

Multifunctional testing device for mutual inductor

Technical Field

The utility model relates to a mutual-inductor test technical field specifically is a multi-functional testing arrangement of mutual-inductor.

Background

The mutual inductor is also called instrument transformer, and is a general name of current mutual inductor and voltage mutual inductor. The high voltage can be changed into low voltage, and the large current can be changed into small current for measuring or protecting the system. Its function is mainly to convert high voltage or large current into standard low voltage (100V) or standard small current (5A or 1A, both referring to rated value) in proportion so as to realize standardization and miniaturization of measuring instrument, protection equipment and automatic control equipment. Meanwhile, the mutual inductor can be used for isolating a high-voltage system so as to ensure the safety of people and equipment.

The mutual inductor needs to be tested before being installed and used, most of the existing mutual inductor comprehensive testers adopt a mutual inductor comprehensive tester to test the mutual inductor comprehensive tester, and the mutual inductor comprehensive tester is a mutual inductor field tester developed by analyzing a mathematical model of the mutual inductor in detail by adopting an indirect method on the basis of the original successful development of a mutual inductor calibration instrument; but the test results depend on the accuracy of the equivalent model and the accuracy of the measurement of each parameter. The instrument can measure CT volt-ampere characteristics, curves (1A and 5A), 5 percent and 10 percent error curves, direct resistance and transformation ratio polarity, CT dynamic stability and short-time thermal current tests according to national standards; the transformation ratio of the voltage transformer can be directly measured; the bushing CT can be measured in a transformer. The specific difference and the polarity of the voltage transformer can be qualitatively measured; on-site measurable current and voltage mutual inductor actual secondary load

However, the height of the existing transformer tester is not convenient to adjust in the actual use process, and then when the transformer is located at a higher position, the tester and the transformer are difficult to be connected, so that the use is limited, and therefore, the multifunctional testing device for the transformer is provided for solving the series of problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multi-functional testing arrangement of mutual-inductor to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a multifunctional testing device for a mutual inductor comprises an upper machine base, a lower machine base and a tester main body, wherein the upper machine base is positioned right above the lower machine base, a placing groove is formed in the middle position inside the upper machine base, the tester main body is placed inside the placing groove, an installation cavity is formed in the bottom of the inner side of the upper machine base, two notches are formed in the bottom of the placing groove, the installation cavity is communicated with the inside of the placing groove through the two notches, a rotating rod is movably installed inside the installation cavity, a limiting block is arranged in the middle position of the rotating rod, two sections of reverse threads are arranged on the surface of the rotating rod, the two sections of reverse threads on the surface of the rotating rod are symmetrically distributed with each other by taking the limiting block as a symmetric point, an internal thread sleeve is installed on each section of reverse threads on the surface of the rotating rod in a sleeved mode, and a movable rod is fixedly installed at the tops of the two internal thread sleeves, the top ends of the two movable rods extend to the inside of the placing groove through the two notches respectively, the top ends of the two movable rods are fixedly provided with positioning plates, and the two positioning plates are located on two sides of the tester main body respectively.

Preferably, two equal fixed mounting has a rubber cushion on the lateral wall of the relative one side of locating plate, the rubber cushion with bond fixedly through the powerful glue between the locating plate.

Preferably, one end of the rotating rod is connected with a connecting shaft, one end of the connecting shaft is fixedly provided with a rotating disc, and the edge of one side of the rotating disc is fixedly provided with a rotating handle.

Preferably, go up the intermediate position department fixed mounting of frame bottom and have the internal thread pipe, the mounting groove has been seted up to the inside intermediate position department of frame down, the mounting groove is open-top structure, the inside movable mounting of mounting groove has the screw thread pivot, the one end of screw thread pivot extends to the inside of internal thread pipe.

Preferably, four equal fixed mounting in four ends of going up frame bottom have a gag lever post, the inside four ends of frame have all seted up the spacing groove down, four the spacing groove is open-top structure, four the gag lever post is located four respectively the inside of spacing groove, and four the bottom of gag lever post all is provided with the stop block, four the inside of spacing groove open-top department all is provided with annular dog.

Preferably, the holding tank has been seted up to the intermediate position department of lower frame bottom, the inside fixed mounting of holding tank has driving motor, the bottom of screw thread pivot with driving motor's output fixed connection.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of scientific and reasonable structure, safe and convenient use, through controlling the driving motor, the driving motor can drive the screw thread rotating shaft to rotate, the screw thread rotating shaft can drive the upper machine seat to ascend through the action of the internal thread pipe, and further can adjust the height of the tester main body, so that the device is convenient to adapt to mutual inductors with different heights, the use is convenient, the rotating handle can drive the rotating disc to rotate, the rotating disc drives the connecting shaft to rotate, the connecting shaft drives the rotating rod to rotate, the rotating rod can drive the two internal thread sleeves to simultaneously move in opposite directions or in reverse directions through the action of two sections of reverse threads on the surface of the rotating rod, and further the two movable rods drive the two positioning plates to simultaneously move in opposite directions or in reverse directions, thereby the device not only is convenient to install and fix the tester main body, but also is convenient to disassemble the tester main body, and can install tester main bodies with different sizes and models, and the adaptability is strong.

Drawings

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

FIG. 2 is an enlarged view of the present invention at A in FIG. 1;

fig. 3 is an enlarged view of the present invention at B in fig. 1.

In the figure: 1. an upper machine base; 2. a movable rod; 3. a handle is rotated; 4. a turntable; 5. a connecting shaft; 6. a lower machine base; 7. an internally threaded tube; 8. a threaded shaft; 9. mounting grooves; 10. a drive motor; 11. accommodating grooves; 12. installing a cavity; 13. an internal thread sleeve; 14. a rotating rod; 15. a notch; 16. positioning a plate; 17. a rubber cushion; 18. a tester main body; 19. a limiting block; 20. a placement groove; 21. a limiting rod; 22. a limiting groove; 23. an annular stop block; 24. and a stop block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a technical scheme of a multifunctional testing device of a mutual inductor comprises an upper machine base 1, a lower machine base 6 and a tester main body 18, wherein the upper machine base 1 is positioned right above the lower machine base 6, a placing groove 20 is formed in the middle position inside the upper machine base 1, the tester main body 18 is placed inside the placing groove 20, an installation cavity 12 is formed in the bottom of the inner side of the upper machine base 1, two notches 15 are formed in the bottom of the placing groove 20, the installation cavity 12 is communicated with the inside of the placing groove 20 through the two notches 15, a rotating rod 14 is movably installed inside the installation cavity 12, a limiting block 19 is arranged in the middle position of the rotating rod 14, two sections of reverse threads are arranged on the surface of the rotating rod 14, the two sections of reverse threads on the surface of the rotating rod 14 are symmetrically distributed by taking the limiting block 19 as a symmetric point, inner thread sleeves 13 are sleeved on the two sections of reverse threads on the surface of the rotating rod 14, movable rods 2 are fixedly installed on the tops of the two inner thread sleeves 13, the top of two movable rods 2 extends to the inside of standing groove 20 through two notches 15 respectively, and the equal fixed mounting in top of two movable rods 2 has locating plate 16, and two locating plates 16 are located the both sides of tester main part 18 respectively.

Preferably, the side walls of the opposite sides of the two positioning plates 16 are fixedly provided with rubber cushions 17, and the rubber cushions 17 and the positioning plates 16 are fixedly bonded through strong glue, so that the positioning plates 16 cannot directly contact with the tester main body 18, and the surface of the tester main body 18 is prevented from being scratched during fixing.

Preferably, one end of the rotating rod 14 is connected with a connecting shaft 5, one end of the connecting shaft 5 is fixedly provided with a rotating disc 4, and the edge of one side of the rotating disc 4 is fixedly provided with a rotating handle 3, so that the rotating rod 14 can be driven to rotate conveniently.

Preferably, the middle position of the bottom of the upper machine base 1 is fixedly provided with an internal thread pipe 7, the middle position of the inner part of the lower machine base 6 is provided with a mounting groove 9, the mounting groove 9 is of a top opening structure, the inner part of the mounting groove 9 is movably provided with a thread rotating shaft 8, and one end of the thread rotating shaft 8 extends to the inner part of the internal thread pipe 7.

Preferably, the equal fixed mounting in four ends of going up 1 bottom of frame has gag lever post 21, spacing groove 22 has all been seted up to four ends of 6 inside of lower frames, four spacing grooves 22 are open-top structure, four gag lever posts 21 are located four inside spacing grooves 22 respectively, and four gag lever posts 21's bottom all is provided with stop block 24, four spacing groove 22 open-top's inside all is provided with annular dog 23, and then can carry on spacingly to internal thread pipe 7, make screw spindle 8 when rotating, internal thread pipe 7 can not rotate along with screw spindle 8's rotation, can only rise or descend.

Preferably, holding tank 11 has been seted up to the intermediate position department of lower frame 6 bottom, and the inside fixed mounting of holding tank 11 has driving motor 10, and the bottom of screw thread pivot 8 and driving motor 10's output fixed connection, and then be convenient for drive screw thread pivot 8 rotates, highly adjusts tester main part 18.

The working principle is as follows: before use, the safety of each structure of the device is checked, wherein the driving motor 10 is an existing electric element, the driving motor 10 can be installed and used according to the actual use requirement, the driving motor is controlled to drive the threaded rotating shaft 8 to rotate, the threaded rotating shaft 8 enables the upper machine base 1 to ascend through the action of the internal threaded pipe 7, and further the height of the tester main body 18 can be adjusted, so that the device is convenient to adapt to mutual inductors with different heights, the use is convenient, the rotating handle 3 is rotated to enable the rotating handle 3 to drive the rotating disc 4 to rotate, the rotating disc 4 drives the connecting shaft 5 to rotate, the connecting shaft 5 drives the rotating rod 14 to rotate, the rotating rod 14 enables the two internal threaded sleeves 13 to simultaneously move in opposite directions or opposite directions through the action of two sections of reverse threads on the surface of the rotating rod 14, and further the two movable rods 2 drive the two positioning plates 16 to simultaneously move in opposite directions or opposite directions, and then make this device not only be convenient for install fixedly to tester main part 18, and be convenient for carry out the split with tester main part 18, install the tester main part 18 of not equidimension model, strong adaptability.

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. Moreover, 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, and any standard components found in known art that may be commercially available or commercially available and may be readily customized based on the teachings of the specification and the drawings, and that the particular connection between the various components is by conventional means well known in the art, and that the machine, component, or apparatus is by model and circuit connection is by conventional means well known in the art, and will not be described in detail herein.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a multi-functional testing arrangement of mutual-inductor, includes frame (1), lower frame (6) and tester main part (18), its characterized in that: the testing device is characterized in that the upper base (1) is positioned right above the lower base (6), a placing groove (20) is formed in the middle position inside the upper base (1), the tester main body (18) is placed inside the placing groove (20), an installation cavity (12) is formed in the bottom of the inner side of the upper base (1), two notches (15) are formed in the bottom of the placing groove (20), the installation cavity (12) is communicated with the inside of the placing groove (20) through the two notches (15), a rotating rod (14) is movably installed inside the installation cavity (12), a limiting block (19) is arranged in the middle position of the rotating rod (14), two reverse threads are arranged on the surface of the rotating rod (14), and the two reverse threads on the surface of the rotating rod (14) are symmetrically distributed by taking the limiting block (19) as a symmetrical point, the equal screw thread of two sections reversals screw thread departments in bull stick (14) surface cup joints and installs internal thread cover (13), two the equal fixed mounting in top of internal thread cover (13) has movable rod (2), two the top of movable rod (2) is respectively through two notch (15) extend to the inside of standing groove (20), two the equal fixed mounting in top of movable rod (2) has locating plate (16), two locating plate (16) are located respectively the both sides of tester main part (18).

2. The multifunctional testing device for the mutual inductor according to claim 1, characterized in that: two equal fixed mounting has rubber cushion (17) on the lateral wall of the relative one side of locating plate (16), rubber cushion (17) with it is fixed to bond through the powerful glue between locating plate (16).

3. The multifunctional testing device for the mutual inductor according to claim 1, characterized in that: one end of the rotating rod (14) is connected with a connecting shaft (5), one end of the connecting shaft (5) is fixedly provided with a turntable (4), and the edge of one side of the turntable (4) is fixedly provided with a rotating handle (3).

4. The multifunctional testing device for the mutual inductor according to claim 1, characterized in that: go up the intermediate position department fixed mounting of frame (1) bottom and have internal thread pipe (7), mounting groove (9) have been seted up to the inside intermediate position department of lower frame (6), mounting groove (9) are open-top structure, the inside movable mounting of mounting groove (9) has screw thread pivot (8), the one end of screw thread pivot (8) extends to the inside of internal thread pipe (7).

5. The multifunctional testing device for the mutual inductor according to claim 1, characterized in that: go up equal fixed mounting in four ends of frame (1) bottom has gag lever post (21), spacing groove (22), four have all been seted up down in four ends of frame (6) inside spacing groove (22), four spacing groove (22) are open-top structure, four gag lever post (21) are located four respectively the inside of spacing groove (22), and four the bottom of gag lever post (21) all is provided with stop block (24), four the inside of spacing groove (22) open-top all is provided with annular dog (23).

6. The multifunctional testing device for the mutual inductor according to claim 4, is characterized in that: holding tank (11) have been seted up to the intermediate position department of lower frame (6) bottom, the inside fixed mounting of holding tank (11) has driving motor (10), the bottom of screw thread pivot (8) with the output fixed connection of driving motor (10).