A transformer testing fixture

Abstract

The utility model provides a kind of transformer test tool, belong to transformer test technical field. Including pedestal, the pedestal one side integration has testing machine, the upper end surface of pedestal is provided with two adjustable spacing's long strip's needle pin seat, two the needle pin seat is parallel, and the needle pin seat is provided with several movable blocks that can be adjusted position along length, the movable block is fixed with needle pin cylinder for the needle pin of transformer to be measured insertion, the bottom of needle pin cylinder is connected with the test module in the testing machine by cable electrically.The utility model, not only can be according to the position of needle pin cylinder of transformer specification flexible adjustment, make it can be adapted to various specifications transformer use, integrated degree is high, and versatility is strong, and can guarantee the stability of its needle pin electrical connection, overall use effect is good.

Description

Technical Field

[0001] This utility model relates to the field of transformer testing technology, and in particular to a transformer testing fixture. Background Technology

[0002] In the field of transformer manufacturing and testing, traditional testing methods typically rely on operators manually connecting the transformer pins using discrete testing instruments to verify electrical performance. This method is not only cumbersome in terms of wiring and inefficient in terms of testing, but also carries a high risk of incorrect connections and is heavily dependent on the operator's experience and skill.

[0003] Meanwhile, in order to adapt to different models of transformers, it is often necessary to customize special test fixtures, which leads to high fixture management costs and long changeover time, making it difficult to meet the flexible production needs of multiple varieties and small batches.

[0004] Therefore, this application provides a transformer testing fixture to solve the above-mentioned technical problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a transformer testing fixture to solve the problems of cumbersome wiring, low efficiency, high cost of special fixtures, long changeover time, and difficulty in meeting the needs of flexible production in existing transformer testing methods.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A transformer testing fixture includes a base, on one side of which a testing machine is integrated. The upper surface of the base is provided with two elongated pin seats with adjustable spacing. The two pin seats are parallel to each other, and each pin seat is provided with several movable blocks whose positions can be adjusted along its length. A pin cylinder for inserting the pins of the transformer to be tested is fixed inside each movable block. The bottom of the pin cylinder is electrically connected to the testing module inside the testing machine via a cable.

[0007] Optionally, the testing machine is equipped with a display screen and control buttons.

[0008] Optionally, a slider is fixed to the lower end face of the pin seat. The slider is slidably disposed close to the outer side of the base, and two fixing ears are symmetrically fixed to the outer side of the base. An adjusting rod for threading through the slider is rotatably installed between the two fixing ears.

[0009] Optionally, the fixing lug has two opposite threaded sections symmetrically constructed, and the middle of the slider has a threaded hole through which the fixing lug passes.

[0010] Optionally, the upper end face of the pin seat is provided with a horizontal mounting groove, the movable block is slidably installed in the mounting groove, and an adjusting column is horizontally inserted into the outer side of the mounting groove. One end of the adjusting column extending into the mounting groove is fixed with a positioning plate for abutting the movable block.

[0011] Optionally, a limiting groove is provided on the side of the mounting groove away from the positioning plate, a protrusion is fixed in the middle of one end of the movable block and slidably embedded in the limiting groove, and a friction part is provided on the other side of the movable block for the positioning plate to abut against.

[0012] Optionally, an inclined electrode plate is hinged and installed in the insertion hole of the pin barrel, the lower end of the electrode plate is electrically connected to the wire core of the cable, and an insulating spring supporting the electrode plate is fixed on the inner wall of the insertion hole of the pin barrel.

[0013] Compared with the prior art, this utility model has at least the following beneficial effects: In the above scheme, the synchronous movement of the two pin holders in opposite directions can be precisely controlled by the cooperation of the adjusting rod, the slider and the fixed ear, so as to realize the continuous stepless adjustment of the pin holder spacing. It has the significant effect of adapting to transformers of different shapes and sizes, and greatly improves the versatility and applicability of the tooling.

[0014] In the above solution, the longitudinal position of each pin barrel can be adjusted independently through the cooperation of the adjusting column, positioning plate and movable block, and reliable locking can be achieved through friction. It has the effect of precise positioning and quick fixation, ensuring that each pin barrel can accurately correspond to the transformer pin position, effectively avoiding misconnection and poor contact.

[0015] In the above scheme, the combination of electrode plates, insulating springs and pin barrels can form an adaptive elastic clamping mechanism when inserting transformer pins, which has the effect of maintaining constant contact pressure and good electrical connection, ensuring the stability of test signals and facilitating pin insertion and removal operations.

[0016] In summary, this device not only allows for flexible adjustment of the pin position according to transformer specifications, making it compatible with transformers of various specifications, but also boasts a high degree of integration and versatility. Furthermore, it ensures the stability of the electrical connection between the pins and the device, resulting in excellent overall performance. Attached Figure Description

[0017] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the pin holder of this utility model; Figure 3 This is a schematic diagram of the structure of the movable block of this utility model; Figure 4 This is a schematic diagram of the internal structure of the pin barrel of this utility model.

[0019] [Figure Labels] 1. Base; 101. Testing machine; 102. Display screen; 103. Control button; 2. Pin holder; 201. Slider; 202. Screw hole; 203. Adjusting column; 204. Positioning plate; 3. Fixing ear; 4. Adjusting rod; 5. Mounting groove; 501. Limiting groove; 6. Movable block; 601. Protrusion; 602. Friction part; 7. Pin cylinder; 701. Electrode plate; 702. Insulating spring; 8. Cable.

[0020] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0021] The transformer testing fixture provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0022] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0023] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0024] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0025] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0026] like Figure 1-4 As shown, an embodiment of this utility model provides a transformer testing fixture, the main structure of which includes a rectangular base 1 made of metal material. A testing machine 101 is integrally integrated on the right side of the base 1. The outer shell of the testing machine adopts the same design as the base 1. The machine is equipped with conventional test units such as withstand voltage test module, turns ratio test module and insulation resistance test module. These modules are interconnected and integrated through internal conventional circuit boards, which will not be described in detail.

[0027] The front panel of the test machine 101 is equipped with a display screen 102 and control buttons 103. The display screen 102 is used to display test parameters and results in real time, and the control buttons 103 are used to turn the machine on and off, select test items, and start test sequences, thus forming a complete human-machine interface.

[0028] On the upper surface of the base 1, two elongated pin seats 2 are arranged in parallel. These pin seats are injection molded from high-strength insulating engineering plastic. A slider 201 is fixedly connected to one end of each pin seat. The slider 201 slides against the outer surface of the base 1. Two fixing ears 3 are symmetrically fixed at both ends of the outer surface of the base 1. An adjusting rod 4 is rotatably installed between the two fixing ears 3. The two ends of the adjusting rod 4 are respectively provided with threaded sections with opposite left and right helical directions, which form threaded engagement with the corresponding screw holes 202 in the middle of the two sliders 201. When the operator rotates the adjusting rod 4, under the action of the opposite threads, the two sliders 201 will drive the pin seats 2 above them to move synchronously towards or away from each other, thereby realizing stepless adjustment of the spacing between the pin seats 2 to adapt to the external dimensions of different transformer models.

[0029] Each pin seat 2 has a horizontal mounting groove 5 along its length on its upper surface, and multiple independently sliding movable blocks 6 are placed in the groove. One end of each movable block 6 is machined with a protrusion 601, which slides into a corresponding limiting groove 501 on the inner side of the mounting groove 5, so that the movable block 6 can only move along the length of the groove and will not come out. The outer wall of the mounting groove 5 is machined with a threaded hole, and an adjusting pin 203 with a threaded outer surface is screwed into the hole. One end of the adjusting pin 203 extending into the mounting groove 5 is fixed with a positioning plate 204. When the adjusting pin 203 is tightened, the positioning plate 204 will move inward and press against the knurled friction part 602 on the side of the movable block 6, and the movable block 6 will be firmly locked in place by friction; conversely, when it is loosened, the position of the movable block 6 can be readjusted.

[0030] A pin cylinder 7 is installed through the center of each movable block 6. An inclined elastic electrode plate 701 is hinged to the insertion hole of the pin cylinder 7 via a miniature pin. The lower end of the electrode plate 701 is soldered to the core of the insulated cable 8 from the testing machine 101 for conduction. An insulating spring 702 is also adhered and fixed to the inner wall of the pin cylinder 7. In its natural state, the spring pushes the electrode plate 701 upwards to keep it in an inclined, open state. When the transformer pin is inserted into the pin cylinder 7, the pin presses down the electrode plate 701, and the elastic reaction force provided by the insulating spring 702 ensures that the electrode plate 701 always abuts against the pin surface, forming a reliable and low-resistance electrical connection.

[0031] In addition, in specific implementation, all cables 8 are arranged in an orderly manner along the preset cable groove inside the base 1, and finally connected to the multi-channel switching module inside the test machine 101. This module is controlled by the main control board and can automatically switch the signals of different test modules to the corresponding pin cylinders 7 according to the test program.

[0032] The working principle of this utility model is as follows: In actual operation, the operator first adjusts the distance between the two pin holders 2 by rotating the adjusting rod 4 according to the actual transformer under test. Then, each adjusting column 203 is loosened one by one, and the sliding movable block 6 is used to precisely align the pin cylinder 7 with the transformer pin distribution. The adjusting column 203 is then tightened again to lock all movable blocks 6. Subsequently, the transformer pins are inserted downwards into each pin cylinder 7. At this time, the electrode plate 701 and the insulating spring 702 will automatically complete clamping and energization. Finally, the preset test process is selected or started by using the control button 103 on the testing machine 101. The system automatically completes each electrical test in sequence and displays the results on the display screen 102 in real time. The entire process requires no external wiring or instrument replacement, improving testing efficiency and operational safety.

[0033] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A transformer testing fixture, comprising a base (1), characterized in that, The base (1) has a test machine (101) integrated on one side. The upper surface of the base (1) is provided with two long strip pin seats (2) with adjustable spacing. The two pin seats (2) are parallel to each other, and the pin seats (2) are provided with a number of movable blocks (6) that can be adjusted along the length. The movable blocks (6) are fixed with pin cylinders (7) for the pins of the transformer to be tested to be inserted. The bottom of the pin cylinders (7) is electrically connected to the test module in the test machine (101) through a cable (8).

2. The transformer testing fixture according to claim 1, characterized in that, The testing machine (101) is equipped with a display screen (102) and control buttons (103).

3. The transformer testing fixture according to claim 1, characterized in that, The lower end face of the pin seat (2) is fixed with a slider (201). The slider (201) is slidably disposed close to the outer side of the base (1). The outer side of the base (1) is symmetrically fixed with two fixing ears (3). An adjusting rod (4) for threaded through the slider (201) is rotatably installed between the two fixing ears (3).

4. The transformer testing fixture according to claim 3, characterized in that, The fixing lug (3) has two opposite threaded sections symmetrically constructed, and the middle part of the slider (201) has a threaded hole (202) through which the fixing lug (3) passes.

5. The transformer testing fixture according to claim 1, characterized in that, The upper end face of the pin seat (2) is provided with a horizontal mounting groove (5). The movable block (6) is slidably installed in the mounting groove (5). An adjusting column (203) is horizontally inserted into the outside of the mounting groove (5). One end of the adjusting column (203) extending into the mounting groove (5) is fixed with a positioning plate (204) for abutting the movable block (6).

6. The transformer testing fixture according to claim 5, characterized in that, The mounting groove (5) has a limiting groove (501) on the side away from the positioning plate (204). A protrusion (601) is fixed in the middle of one end of the movable block (6) and is slidably embedded in the limiting groove (501). A friction part (602) is provided on the other side of the movable block (6) for the positioning plate (204) to abut.

7. The transformer testing fixture according to claim 1, characterized in that, An inclined electrode plate (701) is hinged in the insertion hole of the pin barrel (7). The lower end of the electrode plate (701) is electrically connected to the core of the cable (8). An insulating spring (702) supporting the electrode plate (701) is fixed on the inner wall of the insertion hole of the pin barrel (7).

Images