Portable transformer detection clamp tool

Abstract

The utility model relates to the technical field of transformer detection, in particular to a portable clamp tool for transformer detection. A guide groove is formed in the bottom surface of the cylinder body, and an empty groove is formed in the side wall of the upper end of the cylinder body; a positioning structure is installed at the upper end of the barrel and comprises a fixing plate, the fixing plate is fixedly installed on the outer wall of the upper end of the barrel, a guide rod is fixedly connected to the inner side of the fixing plate, and the surface of the guide rod is sleeved with a spring. According to the utility model, the two groups of cylinders are arranged to fix the pins and the wires respectively, the two groups of cylinders are movably connected through the movable structure, and the two groups of cylinders can deflect under the elastic action of the coil spring, so that the parts of the pins and the wires exposed out of the cylinders can be in stable contact, the operation is convenient, and the working efficiency is improved. And the contact part of the pin and the wire is positioned on the outer side of the cylinder body, so that a worker can conveniently and intuitively observe the connection condition of the pin and the wire, and the practicability of the device is improved.

Description

Technical Field

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

[0002] When testing the inductance of a small transformer, an inductance tester is usually used. In the actual testing process, the inductance tester is connected to two wires. The ends of the two wires away from the inductance tester are pressed against the two pins of the small transformer to test the inductance of the small transformer.

[0003] In response, Chinese patent application number CN202320685725.3 discloses a pin clamp for transformer testing, comprising a connecting sleeve, a clamping sleeve, and a locking sleeve. The clamping sleeve is located at one end of the connecting sleeve and is composed of multiple clamping petals. The outer surfaces of the multiple clamping petals form a frustum-shaped structure, and the inner surfaces of the multiple clamping petals form an inverted frustum-shaped structure. The end of the connecting sleeve away from the clamping sleeve is coaxially fixed to the outside of the conductor. The locking sleeve is used to tighten the clamping petals to the outside of the conductor. This utility model clamp ensures that the conductor is always in contact with the transformer pin during the testing process, avoiding poor contact caused by manually holding the conductor. At the same time, the conductor is directly fixed to the pin through the clamp, and the conductor is fixed by the pin, eliminating the need for both hands to hold the conductor continuously, freeing up both hands for data recording. Furthermore, the clamp is applicable to pins of different sizes, and the clamping force can be adjusted by the number of engagements between the first and second cleaving tooth groups.

[0004] This fixture uses a combination of a connecting sleeve, a clamping sleeve, and a locking sleeve to make contact between the wire and the pin. However, the contact point between the wire and the pin is located inside the connecting sleeve, the clamping sleeve, and the locking sleeve. The internal contact cannot be directly observed from the outside, and the wire and the pin are prone to misalignment, resulting in poor contact and affecting the testing experience.

[0005] Therefore, in order to solve the above problems, a portable transformer testing fixture is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a portable transformer testing fixture to solve the problem mentioned in the background art that the existing fixtures, by setting a connecting sleeve, a clamping sleeve and a locking sleeve, can make the wire and pin contact, but the contact end of the wire and pin is located inside the connecting sleeve, clamping sleeve and locking sleeve, and the internal contact situation cannot be directly observed from the outside. The wire and pin are easily misaligned, resulting in poor contact and affecting the testing experience.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a portable transformer testing fixture, comprising: a cylindrical body;

[0008] The bottom surface of the cylinder is provided with a guide groove, and the upper side wall of the cylinder is provided with a hollow groove;

[0009] A positioning structure is installed at the upper end of the cylinder. The positioning structure includes a fixing plate, which is fixedly installed on the outer wall of the upper end of the cylinder. A guide rod is fixedly connected to the inner side of the fixing plate. A spring is sleeved on the surface of the guide rod, and a clamping ring is slidably installed on the outer side of the guide rod.

[0010] The cylindrical body is provided in two sets;

[0011] The lower end of the cylinder is equipped with a movable structure, which includes a fixed block and a fixed cylinder. The fixed block and the fixed cylinder are respectively installed on the lower outer wall of the two sets of cylinders. The end of the fixed block is fixedly connected to a rotating shaft, and the outer side of the rotating shaft is fixedly connected to a coil spring.

[0012] Preferably, the two sets of cylinders are arranged in a figure-eight shape, and their upper ends are staggered.

[0013] Preferably, the two ends of the spring are fixedly connected to the fixing plate and the clamping ring, respectively.

[0014] Preferably, the clamping ring is slidably mounted on the inside of the empty groove.

[0015] Preferably, the movable structure is horizontally arranged, the rotating shaft is rotatably installed inside the fixed cylinder, and one end of the coil spring is fixedly connected to the inner wall of the fixed cylinder.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model can fix the pins and wires separately by setting two sets of cylinders, and the two sets of cylinders are movably connected by a movable structure. The two sets of cylinders can be deflected under the elastic action of the coil spring, so that the parts of the pins and wires exposed in the cylinders can make stable contact. It is easy to operate, and the contact parts of the pins and wires are located on the outside of the cylinders, which makes it convenient for the staff to observe the connection of the pins and wires intuitively, thus improving the practicality of the device.

[0017] 1. This utility model, by setting a positioning structure, allows for the following operation: During testing, pressing two sets of clamping rings causes them to slide outside the guide rod and compress the spring, retracting the clamping rings inside the empty slot. At this time, the cylinder, clamping rings, and empty slot can remain coaxial. The pins and wires are then inserted into the two sets of cylinders and pass through the middle of the clamping rings, ensuring that the contact ends of the pins and wires are exposed inside the cylinder. The guide slot provides guidance for the insertion of the pins and wires inside the cylinder. When the clamping rings are released, they return to their original position outside the guide rod under the action of the spring and slide inside the empty slot. As the clamping rings move, they will be offset from the empty slot, causing the pins and wires to adhere to the inner wall of the cylinder. This limits the portion of the pins and wires inside the cylinder and can fix the pins and wires to the inner side of the two sets of cylinders.

[0018] 2. This utility model features a movable structure. By gripping the fixing block and rotating the fixing cylinder, the fixing cylinder can be rotated outside the rotating shaft. This allows the two sets of cylinders to rotate towards each other, bringing them closer together and then offsetting them to adjust the position of the exposed parts of the pins and wires. When the fixing cylinder is released, it resets under the elastic action of the coil spring, and the two sets of cylinders return to their original positions and remain offset. This ensures stable contact between the pins and wires, guaranteeing the smooth progress of the testing work. Attached Figure Description

[0019] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0020] Figure 2 This is an exploded view of the cylindrical body and movable structure of this utility model;

[0021] Figure 3 This is a front sectional view of the structure of the cylinder and guide groove of this utility model;

[0022] Figure 4 This is an exploded view of the structure of the fixing block of this utility model.

[0023] In the diagram: 1. Cylinder; 11. Guide groove; 12. Empty groove; 2. Positioning structure; 21. Fixing plate; 22. Guide rod; 23. Spring; 24. Clamping ring; 3. Movable structure; 31. Fixing block; 32. Rotating shaft; 33. Coil spring; 34. Fixing cylinder. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 This utility model provides an embodiment of a portable transformer testing fixture:

[0026] The wires and pins used in this application are products that can be purchased directly from the market. Their principles and connection methods are existing technologies well known to those skilled in the art, and therefore will not be described in detail here.

[0027] A portable transformer testing fixture includes: a cylindrical body 1;

[0028] A guide groove 11 is provided on the bottom surface of the cylinder 1, and a slot 12 is provided on the upper side wall of the cylinder 1.

[0029] A positioning structure 2 is installed at the upper end of the cylinder 1. The positioning structure 2 includes a fixing plate 21. The fixing plate 21 is fixedly installed on the upper outer wall of the cylinder 1. A guide rod 22 is fixedly connected to the inner side of the fixing plate 21. A spring 23 is sleeved on the surface of the guide rod 22. A clamping ring 24 is slidably installed on the outer side of the guide rod 22.

[0030] Two sets of cylinder 1 are provided;

[0031] A movable structure 3 is installed at the lower end of the cylinder 1. The movable structure 3 includes a fixed block 31 and a fixed cylinder 34. The fixed block 31 and the fixed cylinder 34 are respectively installed on the lower outer wall of the two sets of cylinders 1. A rotating shaft 32 is fixedly connected to the end of the fixed block 31. A coil spring 33 is fixedly connected to the outside of the rotating shaft 32. The two sets of cylinders 1 can fix the pins and wires respectively. The two sets of cylinders 1 are movably connected through the movable structure 3. The two sets of cylinders 1 can deflect under the elastic action of the coil spring 33, so that the part of the pin and wire exposed in the cylinder 1 can make stable contact. The operation is convenient. The contact part of the pin and wire is located on the outside of the cylinder 1, which makes it convenient for the staff to observe the connection of the pin and wire, thus improving the practicality of the device.

[0032] Furthermore, the two sets of cylinders 1 are arranged in a figure-eight shape, with their upper ends staggered, and the pins and wires inside the two sets of cylinders 1 can contact each other.

[0033] Furthermore, the two ends of the spring 23 are fixedly connected to the fixed plate 21 and the clamping ring 24 respectively, and the spring 23 provides power for the clamping ring 24 to reset outside the guide rod 22.

[0034] Furthermore, the clamping ring 24 is slidably mounted on the inner side of the slot 12, which provides space for the clamping ring 24 to move on the cylinder 1.

[0035] Furthermore, the movable structure 3 is horizontally positioned, the rotating shaft 32 is rotatably installed inside the fixed cylinder 34, one end of the coil spring 33 is fixedly connected to the inner wall of the fixed cylinder 34, the rotating shaft 32 provides a connection for the rotation between the fixed block 31 and the fixed cylinder 34, and the coil spring 33 provides power for the reset of the two sets of cylinders 1.

[0036] Working principle: The two sets of cylinders 1 are connected by a movable structure 3, which can prevent the device from being scattered and facilitate carrying. During testing, press the two sets of clamping rings 24 respectively. The clamping rings 24 slide outside the guide rod 22 and compress the spring 23, which allows the clamping rings 24 to retract inside the empty groove 12. At this time, the cylinder 1, clamping rings 24 and empty groove 12 can remain coaxial. The pins and wires are respectively passed through the two sets of cylinders 1 and through the middle of the clamping rings 24, while ensuring that the contact ends of the pins and wires are exposed in the cylinder. Inside 1, the guide groove 11 can provide guidance for the pins and wires to pass through the inner side of the cylinder 1. When the clamping ring 24 is released, the clamping ring 24 will be reset outside the guide rod 22 under the action of the spring 23. The clamping ring 24 will slide in the empty groove 12. When the clamping ring 24 moves, it will be misaligned with the empty groove 12. The clamping ring 24 will drive the pins and wires to fit against the inner wall of the cylinder 1. It can limit the part of the pins and wires inside the cylinder 1 and fix the pins and wires to the inner side of the two sets of cylinders 1 respectively.

[0037] By holding the fixing block 31 and rotating the fixing cylinder 34, the fixing cylinder 34 can be rotated outside the rotating shaft 32. This allows the two sets of cylinders 1 to rotate towards each other, bringing them closer and then offsetting them to adjust the position of the pins and wires exposed on the cylinder 1. When the fixing cylinder 34 is released, it resets under the elastic action of the coil spring 33, and the two sets of cylinders 1 reset and remain offset. This ensures that the pins and wires can make stable contact, guaranteeing the smooth progress of the testing work.

[0038] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the description above. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A fixture for portable transformer testing, comprising: Cylinder (1); Its features are: The bottom surface of the cylinder (1) is provided with a guide groove (11), and the upper side wall of the cylinder (1) is provided with a hollow groove (12). A positioning structure (2) is installed at the upper end of the cylinder (1). The positioning structure (2) includes a fixing plate (21). The fixing plate (21) is fixedly installed on the upper outer wall of the cylinder (1). A guide rod (22) is fixedly connected to the inner side of the fixing plate (21). A spring (23) is sleeved on the surface of the guide rod (22). A clamping ring (24) is slidably installed on the outer side of the guide rod (22). The cylinder (1) is provided in two sets; The lower end of the cylinder (1) is equipped with a movable structure (3), which includes a fixed block (31) and a fixed cylinder (34). The fixed block (31) and the fixed cylinder (34) are respectively installed on the lower outer wall of the two sets of cylinders (1). The end of the fixed block (31) is fixedly connected to a rotating shaft (32), and a coil spring (33) is fixedly connected to the outside of the rotating shaft (32).

2. The fixture for portable transformer testing according to claim 1, characterized in that: The two sets of cylinders (1) are arranged in a figure-eight shape, and their upper ends are staggered.

3. The fixture for portable transformer testing according to claim 1, characterized in that: The two ends of the spring (23) are fixedly connected to the fixing plate (21) and the clamping ring (24) respectively.

4. The fixture for portable transformer testing according to claim 1, characterized in that: The clamping ring (24) is slidably mounted on the inside of the empty slot (12).

5. The fixture for portable transformer testing according to claim 1, characterized in that: The movable structure (3) is horizontally arranged, the rotating shaft (32) is rotatably installed inside the fixed cylinder (34), and one end of the coil spring (33) is fixedly connected to the inner wall of the fixed cylinder (34).

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