Transformer testing tool

Abstract

A transformer test tool provided by the present invention comprises a bottom plate and side plates, the top of the bottom plate is symmetrically provided with a plurality of telescopic columns, the tops of the telescopic columns located at the same side are horizontally and rotatably provided with rotating shafts, each rotating shaft is fixedly provided with an opening and closing plate, the top of each opening and closing plate is rotatably provided with a mounting column, and the mounting columns are arranged on the top of the bottom plate. A sliding hole is formed in each mounting column, a movable rod is horizontally and slidably arranged in the sliding hole in a penetrating mode, a limiting assembly for limiting relative sliding of the movable rod and the sliding hole is arranged on each mounting column, a contact piece assembly is arranged at the end, away from the telescopic column, of the movable rod, and the contact piece assembly is used for being connected with a binding post of a transformer in an abutting-against mode; the two side plates are symmetrically arranged at the top of the bottom plate, a conveying belt is arranged between the two side plates, positioning assemblies are further arranged on the two side plates, and the problems that in the prior art, a device for testing the performance of a transformer can only be suitable for transformers of one type, and the application range of the testing device is narrow are solved.

Description

Technical Field

[0001] The invention relates to the technical field of transformer detection, and in particular to a transformer testing tool. Background Art

[0002] As the core equipment in the power system, the transformer is mainly used for the conversion and transmission of electric energy. Its main function is to convert electric energy between different voltage levels through the principle of electromagnetic induction to meet the needs of power transmission and distribution. Transformer testing is a vital task. During the test, the connecting wires of the test equipment are connected to the terminals of the transformer, and the transformer is tested for various performances to ensure the transformer's reliable operation under different environments and load conditions. During the testing of large transformers, specially designed test fixtures are usually required to ensure the accuracy and safety of the test. Then, these transformer test fixture designs are often highly targeted, that is, each fixture can only adapt to transformers of specific models or specifications.

[0003] For example, the Chinese patent with publication number CN117405950A, a transformer testing tool and a testing method thereof, which installs the transformer to be tested on a transformer placement table, controls the telescopic cylinder to drive the elastic telescopic needle to move, and finally allows the elastic telescopic needle to abut against the pin. The elastic telescopic needle then feeds back the signal to the tester to test the transformer performance. The inventor found that although the device achieves accurate and stable contact with the transformer pin by setting the elastic telescopic needle to abut against the pin and setting a guide hole for guidance, the device can only adapt to one type of transformer. When testing other types of transformers, it is necessary to re-make an adaptation device, and the scope of adaptation is limited. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a transformer testing tool, which solves the problem that the device for testing transformer performance in the prior art can only be applied to one type of transformer and the application range of the testing device is narrow.

[0005] According to an embodiment of the present invention, a transformer testing tool comprises a bottom plate and a side plate, a plurality of telescopic columns are symmetrically arranged on the top of the bottom plate, a rotating shaft is horizontally and rotatably mounted on the top of the telescopic column on the same side, an opening and closing plate is fixedly arranged on each rotating shaft, a mounting column is rotatably arranged on the top of each opening and closing plate, a sliding hole is arranged on each mounting column, a movable rod is horizontally and slidably passed through the sliding hole, a limiting component for limiting the relative sliding of the movable rod and the sliding hole is arranged on each mounting column, a contact piece component is arranged at one end of the movable rod away from the telescopic column, the contact piece component is used for contact connection with the terminal of the transformer, the side plate consists of two pieces, the two side plates are symmetrically arranged on the top of the bottom plate, a conveyor belt is arranged between the two side plates, and a positioning component for positioning the transformer on the conveyor belt is also arranged on the two side plates.

[0006] Compared with the prior art, the present invention has the following beneficial effects: by connecting multiple opening and closing plates to the top of the telescopic column through a rotating shaft, the opening and closing of the area directly above the conveyor belt is realized; after the conveyor belt transports the transformer to a predetermined position, the position of the transformer is positioned by a positioning assembly; and then, by rotating the mounting column and sliding the movable rod on the mounting column, the contact piece assembly is located directly above the transformer terminal; after the contact piece assembly is adjusted into place, the telescopic column drives the opening and closing plates to move downward, so that the contact piece assembly can be connected with the transformer terminal, thereby allowing the testing equipment to test the overall performance of the transformer; subsequently, when testing transformers of different sizes, it is only necessary to change the distance by which the movable rod extends out of the sliding hole and rotate the mounting column to adjust the position of the contact piece assembly to adapt to transformers of different sizes, thereby enabling the present device to test transformers of different sizes, and under the action of the positioning assembly, only one adjustment is required to quickly test multiple transformers of the same specification, thereby improving the scope of application while also improving the testing efficiency.

[0007] Furthermore, each limit assembly includes: a limit column, a slide groove connected to the slide hole is opened on the top of each mounting column, a latch is provided at one end of the limit column facing the slide hole, the limit column is slidably arranged on the slide groove, and each movable rod is provided with a slot for inserting the latch.

[0008] Furthermore, it also includes a first spring, one end of the first spring is fixedly provided on the inner wall of the slide groove, and the other end of the first spring is fixedly connected to the limiting column.

[0009] Furthermore, the contact piece assembly includes: a horizontal contact piece and a vertical contact piece, and the vertical contact piece is fixedly arranged at the bottom of the horizontal contact piece.

[0010] Furthermore, the horizontal contact pieces and the vertical contact pieces are both made of elastic materials.

[0011] Furthermore, it also includes a sliding rod, each movable rod has an installation groove at one end away from the rotating shaft, the sliding rod is slidably connected to the sliding rod through the installation groove, the end of the sliding rod away from the installation groove is fixedly connected to the vertical contact piece, one end of the second spring is fixedly provided in the installation groove, and the other end of the second spring is fixedly connected to the sliding rod.

[0012] Furthermore, the positioning assembly includes: a positioning plate and a cut-off plate. The positioning plates are divided into two pieces. The two positioning plates are hingedly arranged on opposite sides of the two side plates. The cut-off plate is horizontally mounted between the two side plates and is located on a side close to the free ends of the two positioning plates. Each positioning plate is also provided with an adjustment assembly for adjusting the inclination angle of the positioning plate.

[0013] Furthermore, each adjustment assembly includes: a screw rod, which horizontally passes through the corresponding side plate and is threadedly connected to the side plate, one end of the screw rod is connected to the corresponding positioning plate through a universal joint, and the other end of the screw rod is provided with a handle.

[0014] Furthermore, connecting plates are connected between the opening and closing plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0016] Figure 2 It is a front view of an embodiment of the present invention.

[0017] Figure 3 Schematic diagram of the structure of the limit assembly according to an embodiment of the present invention.

[0018] Figure 4 Schematic diagram of the positioning component structure of an embodiment of the present invention.

[0019] In the above drawings: 1, bottom plate; 2, telescopic column; 3, rotating shaft; 4, opening and closing plate; 5, mounting column; 6, movable rod; 7, side plate; 8, conveyor belt; 9, limiting column; 10, latch; 11, slot; 12, first spring; 13, horizontal contact piece; 14, vertical contact piece; 15, sliding rod; 16, second spring; 17, positioning plate; 18, cut plate; 19, screw; 20, connecting plate. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] like Figure 1As shown in FIG. 4 , an embodiment of the present invention proposes a transformer testing tool, including a base plate 1 and a side plate 7, a plurality of telescopic columns 2 are symmetrically arranged on the top of the base plate 1, a rotating shaft 3 is horizontally and rotatably mounted on the top of the telescopic column 2 on the same side, an opening and closing plate 4 is fixedly arranged on each rotating shaft 3, a mounting column 5 is rotatably arranged on the top of each opening and closing plate 4, a sliding hole is opened on each mounting column 5, a movable rod 6 is horizontally and slidably penetrated in the sliding hole, a limiting component for limiting the relative sliding of the movable rod 6 and the sliding hole is provided on each mounting column 5, a contact component is provided at one end of the movable rod 6 away from the telescopic column 2, the contact component is used for contacting and connecting with the terminal of the transformer, the side plate 7 consists of two pieces, the two side plates 7 are symmetrically arranged on the top of the base plate 1, a conveyor belt 8 is provided between the two side plates 7, and a positioning component for positioning the transformer on the conveyor belt 8 is also provided on the two side plates 7.In this embodiment, the telescopic column 2 can be telescopic in the vertical direction. The telescopic column 2 can be a cylinder, a hydraulic cylinder or a telescopic rod, etc. The contact piece assembly is electrically connected to the external test equipment. When testing the transformer, the movable rods 6 on both sides of the bottom plate 1 have one end of the contact piece assembly and rotate around the rotating shaft 3 to the side away from the conveyor belt 8, that is, the conveyor belt 8 is placed in an open state, and then the transformer to be tested is placed on the conveyor belt 8. After being transported to a predetermined position by the conveyor belt 8, it is positioned by the positioning assembly. When testing multiple transformers of the same specification, the positioning assembly can save the positioning steps. After the transformer reaches the predetermined position, the opening and closing plate 4 is rotated to make The opening and closing plates 4 on both sides of the bottom plate 1 are in a horizontal state (in this embodiment, a horizontal plate is mounted on the top of the telescopic column 2, and the rotating shaft 3 is arranged on the horizontal plate. The horizontal plate can limit the rotation of the opening and closing plates 4, so that the end of the movable rod 6 with the contact piece assembly will not rotate to the bottom, and a ratchet mechanism can be arranged on the rotating shaft 3 to limit the rotation of the movable rod 6. These are conventional means and will not be described in detail here). Then, the mounting column 5 is pulled and the movable rod 6 is pulled, so that the movable rod 6 rotates with the mounting column 5 and extends out of the sliding hole by an appropriate distance, so that the contact piece assembly is above the transformer terminal. In this embodiment, the limiting assembly limits the movable rod 6. The extension distance is fixed and limited, and the connection between the mounting column 5 and the opening and closing plate 4 can be a threaded rotation connection to prevent the mounting column 5 from rotating easily. The telescopic column 2 is started to drive the rotating shaft 3 to move downward, so that the contact piece assembly is connected with the terminal of the transformer, so that the performance of the entire transformer is tested through the test equipment. After the test is completed, the opening and closing plate 4 is rotated again to open the area above the conveyor belt 8 to facilitate the removal of the transformer. For the placement of large transformers, the hoisting method can be used. When testing another transformer of the same specification, the positioning component can be used to position the positioning component without adjusting the position of the contact piece assembly again. When it is necessary to test transformers of different specifications, the contact assembly can be in a suitable position by rotating the mounting column 5 and adjusting the length of the movable rod 6 extending from the sliding hole, so that the contact assembly can be connected with the terminal of the transformer, thereby facilitating the testing equipment to test the transformer. By setting the contact assembly at the end of the movable rod 6, and the movable rod 6 passing through the mounting column 5 can rotate with the mounting column 5 and extend or retract from the sliding hole, the position of the contact assembly can be adjusted as needed to adapt to transformers of different specifications, so that transformers of different specifications can be tested by this tooling, and the scope of application is wide. Preferably, a condenser tube can be tied to the telescopic column 2 and the opening and closing plate 4. The condenser tube is a hose, and cold air is passed into the condenser tube, which is convenient for cooling the transformer during the test.

[0022] like Figure 3As shown, further, each limiting assembly includes: a limiting column 9, a slide slot connected to the slide hole is provided on the top of each mounting column 5, a latch 10 is provided on one end of the limiting column 9 facing the slide hole, the limiting column 9 is slidably arranged on the slide slot, and each movable rod 6 is provided with a slot 11 for inserting the latch 10. The movable rod 6 and the rotating rod slide through the slide hole, and after the movable rod 6 is extended out of the slide hole by a suitable length, the limiting column 9 is placed in the slide slot, so that one end of the limiting column 9 with the latch 10 is inserted into the slot 11, thereby limiting the movement of the movable rod 6 and fixing the extension distance of the movable rod 6, which is convenient for subsequent testing of batches of transformers with the same specifications.

[0023] like Figure 3 As shown, further, a first spring 12 is included, one end of the first spring 12 is fixedly provided on the inner wall of the slide slot, and the other end of the first spring 12 is fixedly connected to the limiting column 9. Under the action of the first spring 12, the limiting column 9 maintains a tendency to move toward the movable rod 6, so that after the latch 10 is inserted into the slot 11 on the movable rod 6, the latch 10 is not easy to fall out of the slot 11, so that the latch 10 can stably limit the movement of the movable rod 6.

[0024] like Figure 1 —2, further, the contact assembly includes: a horizontal contact 13 and a vertical contact 14, and the vertical contact 14 is fixedly arranged at the bottom of the horizontal contact 13. According to the different positions of the transformer terminal, when connecting with the transformer terminal, the horizontal contact 13 can be moved downward to contact the top of the terminal, or the movable rod 6 can be lowered to a position horizontal with the transformer terminal, and then the movable rod 6 is pushed so that one end of the movable rod 6 with the vertical contact 14 moves horizontally to contact and connect with the side wall of the transformer terminal.

[0025] Furthermore, the horizontal contact piece 13 and the vertical contact piece 14 are both made of elastic material. Specifically, the elastic material can be a spring sheet, beryllium copper or other materials. The horizontal contact piece 13 and the vertical contact piece 14 made of elastic material can keep in contact with the transformer terminal when in contact connection, so as to avoid loose connection with the transformer terminal during the test, thereby improving the accuracy of the test.

[0026] like Figure 3As shown, further, it also includes a sliding rod 15, and each movable rod 6 has a mounting groove at one end away from the rotating shaft, and the sliding rod is slidably connected to the sliding rod 15 through the mounting groove, and the end of the sliding rod 15 away from the mounting groove is fixedly connected to the vertical contact piece 14, and one end of the second spring 16 is fixedly arranged in the mounting groove, and the other end of the second spring 16 is fixedly connected to the sliding rod 15. When the vertical contact piece 14 is in contact with the side wall of the transformer terminal, the vertical contact piece 14 can be moved a little further toward the side wall of the transformer terminal, so that the second spring 16 is in a compressed state, so that the vertical contact piece 14 is always kept in contact with the terminal, avoiding the occurrence of poor contact.

[0027] like Figure 1 and 4 As shown, further, the positioning assembly includes: a positioning plate 17 and a cut-off plate 18. The positioning plate 17 is divided into two pieces. The two positioning plates 17 are respectively hingedly arranged on the opposite sides of the two side plates 7. The cut-off plate 18 is horizontally erected between the two side plates 7 and is located on the side close to the free ends of the two positioning plates 17. Each positioning plate 17 is also provided with an adjustment assembly for adjusting the inclination angle of the positioning plate 17. The cut-off plate 18 blocks the movement of the transformer on the conveyor belt 8. The worker adjusts the inclination angle of the positioning plate 17 through the adjustment assembly as needed. After placing the transformer on the conveyor belt 8, the transformer is transported by the conveyor belt 8 and then guided to the center of the conveyor belt 8 by the guidance of the positioning plate 17, thereby realizing the positioning of the transformer. When measuring multiple transformers of the same specification, there is no need to adjust the position of the contact assembly multiple times, saving time.

[0028] like Figure 4 As shown, further, each adjustment assembly includes: a screw rod 19, the screw rod 19 horizontally passes through the corresponding side plate 7 and is threadedly connected to the side plate 7, one end of the screw rod 19 is connected to the corresponding positioning plate 17 through a universal joint, and the other end of the screw rod 19 is provided with a handle. Specifically, in this embodiment, the screw rod 19 is connected to the end of the positioning plate 17 away from its hinge point through a universal joint. When adjusting, the handle is turned, and the handle drives the screw rod 19 to rotate, so that the screw rod 19 is screwed into the area between the two side plates 7, thereby changing the inclination angle of the positioning plate 17. By adjusting the inclination angle of the positioning plate 17, the distance between the free ends of the two positioning plates 17 is changed, so that the two positioning plates 17 can guide transformers of different widths to the center of the conveyor belt 8.

[0029] like Figure 1 As shown, further, a connecting plate 20 is connected between the opening and closing plates 4. The connecting plate 20 connects the multiple opening and closing plates 4, so that when the worker rotates the opening and closing plates 4, he only needs to rotate one opening and closing plate 4 to synchronously rotate the rotation of the multiple opening and closing plates 4.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A transformer testing tool, characterized in that: include: A bottom plate (1), a plurality of telescopic columns (2) are symmetrically arranged on the top of the bottom plate (1), a rotating shaft (3) is horizontally and rotatably mounted on the top of the telescopic columns (2) on the same side, an opening and closing plate (4) is fixedly arranged on each rotating shaft (3), a mounting column (5) is rotatably arranged on the top of each opening and closing plate (4), each mounting column (5) is provided with a sliding hole, a movable rod (6) is horizontally and slidably penetrated in the sliding hole, each mounting column (5) is provided with a limit assembly for limiting the relative sliding of the movable rod (6) and the sliding hole, and a contact assembly is provided at one end of the movable rod (6) away from the telescopic column (2), and the contact assembly is used for contact connection with the terminal of the transformer; The side panels (7) are divided into two pieces. The two side panels (7) are symmetrically arranged on the top of the bottom panel (1). A conveyor belt (8) is arranged between the two side panels (7). The two side panels (7) are also provided with positioning components for positioning the transformer on the conveyor belt (8).

2. A transformer testing tool as claimed in claim 1, characterized in that: Each limiting assembly comprises: a limiting column (9); a sliding groove connected to the sliding hole is provided on the top of each mounting column (5); a latch (10) is provided at one end of the limiting column (9) facing the sliding hole; the limiting column (9) is slidably arranged on the sliding groove; and a slot (11) for inserting the latch (10) is provided on each movable rod (6).

3. A transformer testing tool as claimed in claim 2, characterized in that: It also includes a first spring (12), one end of which is fixedly provided on the inner wall of the slide groove, and the other end of the first spring (12) is fixedly connected to the limiting column (9).

4. A transformer testing tool as claimed in claim 1, characterized in that: The contact piece assembly comprises: a horizontal contact piece (13) and a vertical contact piece (14), wherein the vertical contact piece (14) is fixedly arranged at the bottom of the horizontal contact piece (13).

5. A transformer testing tool as claimed in claim 4, characterized in that: The transverse contact piece (13) and the vertical contact piece (14) are both made of elastic material.

6. A transformer testing tool as claimed in claim 4, characterized in that: It also includes a sliding rod (15), each movable rod (6) has a mounting groove at one end away from the rotating shaft, the sliding rod is slidably connected to the sliding rod (15) through the mounting groove, the end of the sliding rod (15) away from the mounting groove is fixedly connected to the vertical contact piece (14), one end of a second spring (16) is fixedly arranged in the mounting groove, and the other end of the second spring (16) is fixedly connected to the sliding rod (15).

7. A transformer testing tool as claimed in claim 1, characterized in that The positioning assembly comprises: a positioning plate (17) and a cut-off plate (18). The positioning plate (17) is composed of two pieces. The two positioning plates (17) are hingedly arranged on opposite sides of the two side plates (7). The cut-off plate (18) is horizontally mounted between the two side plates (7) and is located on a side close to the free ends of the two positioning plates (17). Each positioning plate (17) is also provided with an adjustment assembly for adjusting the inclination angle of the positioning plate (17).

8. A transformer testing tool as claimed in claim 7, characterized in that: Each adjustment assembly comprises a screw rod (19), the screw rod (19) horizontally passes through the corresponding side plate (7) and is threadedly connected to the side plate (7), one end of the screw rod (19) is connected to the corresponding positioning plate (17) through a universal joint, and the other end of the screw rod (19) is provided with a handle.

9. A transformer testing tool as claimed in claim 1, characterized in that: Connecting plates (20) are connected between the opening and closing plates (4).

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