A multi-transformer detection tool

Abstract

The utility model relates to the technical field of mutual inductor detection, concretely relates to a kind of multi mutual inductor detection tool, including operation platform, the bearing seat being set on operation platform and the bearing groove on bearing seat, still including the first support frame being set on operation platform and being located the rear side of bearing seat, the lifting cylinder being set on the first support frame, with the lifting cylinder telescopic end fixed and located the lifting needle plate above bearing seat, the pin being set in the lower end of lifting needle plate, and the needle slot being set on bearing seat and corresponding with pin. The design is high in detection efficiency, simple in structure, convenient to operate and low in cost.

Description

Technical Field

[0001] This utility model relates to the field of instrument transformer testing technology, specifically to a multi-instrument transformer testing fixture. Background Technology

[0002] When testing the performance of current transformers, it is necessary to first limit the current transformer and then connect it to the testing instrument to test various performance characteristics of the current transformer. In order to achieve automated testing and improve testing efficiency, the existing testing fixtures are very complex in structure, costly, and inconvenient to transport. Some simple testing fixtures require manual operation and can only test one current transformer at a time, resulting in low testing efficiency. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a multi-current transformer testing fixture that can simultaneously test multiple current transformers, offering high testing efficiency, simple structure, convenient operation, and low cost.

[0004] The technical solution adopted by this utility model is to provide a multi-transformer testing fixture, including an operating table, a carrier seat set on the operating table, and a carrier groove on the carrier seat. It also includes a first support frame set on the operating table and located behind the carrier seat, a lifting cylinder set on the first support frame, a lifting needle plate fixed to the telescopic end of the lifting cylinder and located above the carrier seat, a needle set at the lower end of the lifting needle plate, and a needle groove set on the carrier seat and corresponding to the needle.

[0005] The extension end of the lifting cylinder is vertically downward and fixed to the upper end of the lifting needle plate. The lifting needle plate corresponds vertically to the support seat. The lifting needle plate has the freedom to move up and down above the support seat by means of the lifting cylinder. The support seat is provided with multiple sets of support grooves and needle grooves. The support grooves and needle grooves are electrically connected. Multiple sets of needles are provided and correspond vertically to the needle grooves.

[0006] It also includes a second support frame respectively set on both sides of the bearing seat, a guide frame set inside the second support frame, and a guide rod set between the guide frame and the operating table. The lifting needle plate is provided with sliding holes on both sides that are adapted to the guide rod. The lifting needle plate is slidably fitted onto the guide rod by means of the sliding holes.

[0007] The bearing seat has a rectangular plate structure and multiple bearing seats are arranged side by side. Each bearing seat is provided with a set of pin grooves and two sets of bearing grooves. The pin grooves are located in the middle of the upper end of the bearing seat, and the two bearing grooves are respectively located in the upper front and upper rear sides of the bearing seat.

[0008] It also includes a positioning seat set on the operating table. The positioning seat has a rectangular plate structure and the upper end of the positioning seat is set in a positioning groove. The positioning groove has a groove structure with an opening at the top and the front side. The bearing seats are arranged side by side in the positioning groove.

[0009] The first support frame includes a plurality of spaced first columns and fixing plates respectively disposed on the front and rear sides of the plurality of first columns, and the lifting cylinder is fixed to the fixing plate on the front side of the first columns.

[0010] The beneficial effects of this utility model are that it provides a multi-current transformer testing fixture. The upper end of the support base is provided with multiple support grooves and needle grooves. During testing, multiple current transformers are placed into the support grooves respectively, and a lifting cylinder drives the lifting needle plate to descend until multiple sets of pins at the lower end of the lifting needle plate are inserted into the corresponding needle grooves. This design can quickly realize the positioning of multiple current transformers and the electrical connection with the testing instrument, with high testing efficiency, simple structure, convenient operation, and low cost. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a structural schematic diagram of the support base.

[0013] In the attached diagram, 1 is the operating table, 2 is the support seat, 3 is the support groove, 4 is the first support frame, 5 is the lifting cylinder, 6 is the lifting needle plate, 7 is the needle insertion, 8 is the needle groove, 9 is the second support frame, 10 is the guide frame, 11 is the guide rod, 12 is the positioning seat, 13 is the positioning groove, 14 is the first column, and 15 is the fixing plate. Detailed Implementation

[0014] like Figure 1-2 As shown, this utility model provides a multi-transformer testing fixture, including an operating table 1, a support seat 2 mounted on the operating table 1, and a support groove 3 on the support seat 2. It also includes a first support frame 4 mounted on the operating table 1 and located behind the support seat 2, a lifting cylinder 5 mounted on the first support frame 4, a lifting needle plate 6 fixed to the telescopic end of the lifting cylinder 5 and located above the support seat 2, a pin 7 mounted at the lower end of the lifting needle plate 6, and a needle groove 8 mounted on the support seat 2 corresponding to the pin 7. The telescopic end of the lifting cylinder 5 is vertically downward and fixed to the upper end of the lifting needle plate 6. The lifting needle plate 6 corresponds vertically to the support seat 2. The lifting needle plate 6 has the freedom to move up and down above the support seat 2 via the lifting cylinder 5. The support seat 2 is provided with multiple sets of support grooves 3 and needle grooves 8, which are electrically connected. Multiple sets of pins 7 are provided and correspond vertically to the needle grooves 8.

[0015] The support base 2 is installed on the table surface at the upper end of the operating table 1. The upper end of the support base 2 is provided with multiple support grooves 3 and pin grooves 8. The support grooves 3 are adapted to the shape of the current transformer. The support grooves 3 are provided with first electrical terminals that abut against the pins of the current transformer. The pin grooves 8 are provided with second electrical terminals that abut against the pins 7. The first electrical terminals and the second electrical terminals are electrically connected through printed circuits or cables. During testing, multiple current transformers are placed into the support grooves 3 respectively. The pins of the placed current transformers abut against the first electrical terminals. After all the current transformers are placed, the lifting cylinder 5 is activated, driving the lifting pin plate 6 to descend until the multiple sets of pins 7 at the lower end of the lifting pin plate 6 are inserted into the corresponding pin grooves 8 and abut against the second electrical terminals. At this time, the pins 7 are electrically connected to the current transformer. The upper end of the pins 7 passes through the lifting pin plate 6 and extends upward, and is electrically connected to the detector through cables. This design can quickly realize the positioning of multiple current transformers and the electrical connection with the detector. It has high testing efficiency, simple structure, convenient operation, and low cost.

[0016] like Figure 1-2 As shown, it also includes a second support frame 9 respectively disposed on both sides of the bearing seat 2, a guide frame 10 disposed inside the second support frame 9, and a guide rod 11 disposed between the guide frame 10 and the operating table 1. The lifting needle plate 6 is provided with sliding holes on both sides that are adapted to the guide rod 11. The lifting needle plate 6 is slidably fitted onto the guide rod 11 on both sides by means of the sliding holes.

[0017] The guide rod 11 is vertically set and plays a supporting and guiding role when the lifting needle plate 6 is raised and lowered, making the raising and lowering of the lifting needle plate 6 more stable and allowing the needle 7 to be inserted into the needle groove 8 more accurately.

[0018] like Figure 1-2 As shown, the bearing seat 2 has a rectangular plate structure and multiple bearing seats are arranged side by side. Each bearing seat 2 is provided with a set of needle grooves 8 and two sets of bearing grooves 3. The needle grooves 8 are located in the middle of the upper end of the bearing seat 2, and the two bearing grooves 3 are respectively located at the upper front end and the upper rear end of the bearing seat 2.

[0019] Each bearing seat 2 is provided with two bearing grooves 3 and one pin groove 8. The second electrical terminal in the pin groove 8 is electrically connected to the two bearing grooves 3 respectively, so that a set of pin grooves 8 can complete the electrical connection of two current transformers. The pin groove 8 is located between the two bearing grooves 3, which facilitates connection and does not interfere with each other.

[0020] like Figure 1-2 As shown, it also includes a positioning seat 12 disposed on the operating table 1. The positioning seat 12 has a rectangular plate-like structure and the upper end of the positioning seat 12 is disposed in a positioning groove 13. The positioning groove 13 has a groove-like structure with an opening at the upper end and the front side. The bearing seat 2 is disposed side by side in the positioning groove 13.

[0021] The positioning seat 12 is fixed on the upper end of the operating table 1, located between the first support frame 4 and the second support frame 9. The bearing seat 2 is placed side by side in the positioning groove 13 on the operating table 1, which is convenient to pick up and put in. The bearing seat 2 can be taken out and put back into the positioning groove 13 after the current transformer is placed, making the operation more flexible and convenient.

[0022] like Figure 1-2 As shown, the first support frame 4 includes a plurality of spaced first columns 14 and fixing plates 15 respectively disposed on the front and rear sides of the plurality of first columns 14. The lifting cylinder 5 is fixed on the fixing plate 15 on the front side of the first column 14.

[0023] The first support frame 4 consists of multiple first columns 14 and two fixing plates 15. It has a simple and stable structure and is easy to assemble.

Claims

1. A multi-transformer testing fixture, comprising an operating table (1), a support base (2) disposed on the operating table (1), and a support groove (3) on the support base (2), characterized in that: It also includes a first support frame (4) set on the operating table (1) and located behind the support seat (2), a lifting cylinder (5) set on the first support frame (4), a lifting needle plate (6) fixed to the extension end of the lifting cylinder (5) and located above the support seat (2), a needle (7) set at the lower end of the lifting needle plate (6), and a needle groove (8) set on the support seat (2) and corresponding to the needle (7); The extension end of the lifting cylinder (5) is vertically downward and fixed to the upper end of the lifting needle plate (6). The lifting needle plate (6) corresponds vertically to the support seat (2). The lifting needle plate (6) has the freedom to move up and down above the support seat (2) with the help of the lifting cylinder (5). The support seat (2) is provided with multiple sets of support grooves (3) and needle grooves (8). The support grooves (3) and needle grooves (8) are electrically connected. The insertion needles (7) are provided with multiple sets and correspond vertically to the needle grooves (8).

2. The multi-transformer testing fixture according to claim 1, characterized in that: It also includes a second support frame (9) respectively set on both sides of the bearing seat (2), a guide frame (10) set inside the second support frame (9), and a guide rod (11) set between the guide frame (10) and the operating table (1). The lifting needle plate (6) is provided with sliding holes on both sides that are adapted to the guide rod (11). The lifting needle plate (6) is slidably fitted onto the guide rod (11) on both sides by means of the sliding holes.

3. The multi-transformer testing fixture according to claim 1, characterized in that: The bearing seat (2) has a rectangular plate structure and multiple bearing seats are arranged side by side. Each bearing seat (2) is provided with a set of needle grooves (8) and two sets of bearing grooves (3). The needle grooves (8) are located in the middle of the upper end of the bearing seat (2), and the two bearing grooves (3) are respectively located at the upper front end and the upper rear end of the bearing seat (2).

4. The multi-transformer testing fixture according to claim 3, characterized in that: It also includes a positioning seat (12) set on the operating table (1), the positioning seat (12) is a rectangular plate structure and the upper end of the positioning seat (12) is set in the positioning groove (13), the positioning groove (13) is a groove structure with an opening at the upper end and the front side, and the bearing seat (2) is arranged side by side in the positioning groove (13).

5. The multi-transformer testing fixture according to claim 1, characterized in that: The first support frame includes a plurality of spaced first columns (14) and fixing plates (15) respectively disposed on the front and rear sides of the plurality of first columns (14). The lifting cylinder is fixed on the fixing plate (15) on the front side of the first column (14).

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