Portable high-protection transformer transformation ratio tester

Abstract

The utility model discloses a portable high-protection transformer transformation ratio tester, which relates to the technical field of transformer transformation ratio testing, and comprises a storage box, a box cover is mounted on the top surface of the storage box, a transformation ratio tester body is mounted in the storage box, a fixed cylinder is fixedly mounted in the middle of the bottom surface of the storage box, and the fixed cylinder is fixedly mounted on the bottom surface of the storage box. A telescopic pull rod is slidably installed in one side of the fixing cylinder, the storage box is matched with the box cover to store the transformation ratio tester body, when the transformation ratio tester body needs to be carried to test a transformer, the telescopic pull rod in the fixing cylinder is pulled out, the storage box is controlled to incline through the pulled-out pull rod, and the transformation ratio tester body is placed in the storage box. According to the transformation ratio tester disclosed by the invention, the two moving wheels mounted on one side of the bottom surface of the storage box are in contact with the ground, so that the transformation ratio tester body is convenient to carry under the cooperation of the telescopic pull rod and the two moving wheels, the transformation ratio tester body does not need to be carried by hands, and the comfort of the hands of a worker is improved.

Description

Technical Field

[0001] This utility model relates to the field of transformer turns ratio testing technology, specifically a portable high-protection transformer turns ratio tester. Background Technology

[0002] A transformer turns ratio tester, generally referring to a fully automatic turns ratio group comprehensive tester, also known as a turns ratio meter, can automatically measure the turns ratio, group polarity, and error of various single-phase and three-phase transformers and voltage transformers. It can check the correctness of the transformer turns ratio, determine whether the turns ratio matches the nameplate value to ensure that the required voltage transformation is achieved, and check the condition of the tap changer, including whether the voltage tap changer indication position is correct.

[0003] However, most existing transformer ratio testers are designed to be portable, requiring manual carrying. This can cause hand discomfort for workers, especially over long distances. Furthermore, some of the cases used to store transformer ratio testers offer poor protection, making them susceptible to damage to internal components when driven on bumpy roads, thus affecting their usability. Utility Model Content

[0004] To address the discomfort to workers' hands caused by carrying a transformer ratio tester by hand, and the potential damage to internal components when driving on bumpy roads, this invention aims to provide a portable, highly protected transformer ratio tester.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: a portable high-protection transformer ratio tester, comprising a storage box, a box cover installed on the top surface of the storage box, a transformer ratio tester body installed inside the storage box, a fixed cylinder fixedly installed in the middle of the bottom surface of the storage box, a telescopic pull rod slidably installed in one side of the fixed cylinder, two movable wheels symmetrically installed in one side of the bottom surface of the storage box, the two movable wheels cooperating with the telescopic pull rod, a rotating shaft symmetrically installed in one side of the top surface of the storage box, a rotating cylinder symmetrically installed in one side of the bottom surface of the box cover, the rotating cylinder being sleeved on the surface of the rotating shaft, and the box cover being rotatably mounted above the storage box via the rotating shaft and the rotating cylinder;

[0006] A positioning element is symmetrically installed on one side of the bottom surface of the box cover, and a positioning groove is symmetrically opened on one side of the top surface of the storage box. There are two positioning elements and two positioning grooves. The positioning element is slidably locked in the positioning groove. A positioning component is installed on one side of the storage box between the two positioning grooves.

[0007] Preferably, the positioning component includes two sliding members that slide relative to each other between two positioning slots. A positioning pin is fixedly installed on one side of each of the two sliding members. A return spring is fixedly installed between the two sliding members. The two positioning pins are slidably inserted into the two positioning members through the two sliding members and the return spring. First flexible pads are fixedly installed on all four sides of the storage box. Second flexible pads are fixedly installed on the bottom surface and one side of the box lid of the storage box. The ratio tester body cooperates with the first and second flexible pads.

[0008] Preferably, two connectors are fixedly installed on one side of the surfaces of the two sliding members. A push-pull member is fixedly installed at one end of each of the two connectors. The two push-pull members slide relative to each other on one side surface of the storage box. A fixing groove is opened in the middle of the bottom surface of the storage box. The fixing cylinder is fixedly installed in the fixing groove. Auxiliary support blocks are fixedly installed at both ends of the bottom surface of the storage box away from the moving wheel. The auxiliary support blocks cooperate with the moving wheel.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. In this utility model, the transformer ratio tester body is stored in a storage box with a lid. When it is necessary to carry the transformer ratio tester body to test the transformer, the telescopic rod inside the fixed cylinder is pulled out. The pulled-out rod controls the storage box to tilt, so that the two movable wheels installed on one side of the bottom of the storage box contact the ground. With the cooperation of the telescopic rod and the two movable wheels, it is convenient to carry the transformer ratio tester body without having to carry it by hand, thus improving the comfort of the operator's hands.

[0011] 2. In this utility model, after the box cover is closed by the positioning component and the positioning piece, the second flexible pad installed inside the box cover, together with the first flexible pad installed on the four sides inside the storage box and the second flexible pad installed on the bottom, protects the transformer ratio tester body and prevents the transformer ratio tester body from being damaged. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the bottom structure of the storage box of this utility model.

[0015] Figure 3 This is a schematic diagram of the overall unfolded structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the internal structure of the box body of this utility model.

[0017] Figure 5 This utility model Figure 4 Enlarged view of the structure at point A in the middle.

[0018] In the diagram: 1. Storage box; 11. Casters; 12. Fixed cylinder; 13. Telescopic pull rod; 14. Auxiliary support block; 15. Rotating shaft; 16. Fixed groove; 2. Box cover; 21. Positioning component; 211. Positioning groove; 22. Rotating cylinder; 23. Pull groove; 3. Transformer ratio tester body; 4. First flexible pad; 5. Second flexible pad; 6. Positioning assembly; 61. Sliding component; 62. Positioning pin; 63. Return spring; 64. Connecting component; 65. Push-pull component. Detailed Implementation

[0019] 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.

[0020] Example: Figure 1-5 As shown, this utility model provides a portable high-protection transformer turns ratio tester, including a storage box 1, a box cover 2 installed on the top surface of the storage box 1, a turns ratio tester body 3 installed inside the storage box 1, a fixing cylinder 12 fixedly installed in the middle of the bottom surface of the storage box 1, a telescopic pull rod 13 slidably installed in one side of the fixing cylinder 12, two movable wheels 11 symmetrically installed in one side of the bottom surface of the storage box 1, the two movable wheels 11 cooperating with the telescopic pull rod 13, and two movable wheels 11 symmetrically installed in one side of the top surface of the storage box 1. A rotating shaft 15 is used. A rotating cylinder 22 is symmetrically installed on one side of the bottom surface of the box cover 2. The rotating cylinder 22 is sleeved on the surface of the rotating shaft 15. The box cover 2 is rotatably installed above the storage box 1 through the rotating shaft 15 and the rotating cylinder 22. A positioning component 21 is symmetrically installed in the middle of one side of the bottom surface of the box cover 2. A positioning groove 211 is symmetrically opened in the middle of one side of the top surface of the storage box 1. There are two positioning components 21 and two positioning grooves 211. The positioning component 21 is slidably locked in the positioning groove 211. A positioning component 6 is installed on one side of the storage box 1 between the two positioning grooves 211.

[0021] The transformer ratio tester body 3 is stored in the storage box 1 with the lid 2. When the transformer ratio tester body 3 needs to be carried to test the transformer, the telescopic rod 13 inside the fixed cylinder 12 is pulled out. The pulled-out rod controls the tilting of the storage box 1, so that the two moving wheels 11 installed on one side of the bottom of the storage box 1 contact the ground. With the cooperation of the telescopic rod 13 and the two moving wheels 11, it is convenient to carry the transformer ratio tester body 3 without having to carry it by hand, thus improving the comfort of the operator's hands. When the transformer ratio tester body 3 needs to be used, the telescopic rod 13 is retracted into the fixed cylinder 12, the storage box 1 is laid flat, and the lid 2 is opened with the cooperation of the two rotating shafts 15 and the corresponding rotating cylinder 22, so that the transformer ratio tester body 3 can be used.

[0022] The positioning component 6 includes two sliding members 61 that slide relative to each other between two positioning slots 211. A positioning pin 62 is fixedly installed on one side of each sliding member 61. A return spring 63 is fixedly installed between the two sliding members 61. The two positioning pins 62 are slidably inserted into the two positioning members 21 via the two sliding members 61 and the return spring 63. First flexible pads 4 are fixedly installed on all four sides of the storage box 1. Second flexible pads 5 are fixedly installed on the bottom surface of the storage box 1 and on one side of the box cover 2. The transformer ratio tester body 3 cooperates with the first flexible pads 4 and the second flexible pads 5. With the cooperation of the positioning component 6 and the positioning members 21, the box cover 2 is positioned... After the storage box 1 is closed, the two positioning pieces 21 are inserted into the corresponding positioning grooves 211 after the box cover 2 is closed. After insertion, the two sliding pieces 61 and the return spring 63 in the positioning assembly 6 control the two positioning pins 62 to be inserted into the corresponding positioning pieces 21 respectively, thus completing the positioning fixation of the positioning pieces 21 in the corresponding positioning grooves 211, thereby completing the positioning fixation after the box cover 2 is closed. After the box cover 2 is closed by the positioning assembly 6 and the positioning pieces 21, the second flexible pad 5 installed in the box cover 2, together with the first flexible pad 4 installed on the four sides and the second flexible pad 5 installed on the bottom of the storage box 1, protects the transformer ratio tester body 3 and prevents the transformer ratio tester body 3 from being damaged.

[0023] Two connectors 64 are fixedly installed on one side of the surface of each of the two sliding parts 61. Each connector 64 has a push-pull part 65 fixedly installed on one end. The two push-pull parts 65 slide relative to each other on one side of the storage box 1. The push-pull parts 65 are connected to the corresponding sliding parts 61 through the connectors 64. With the cooperation of the push-pull parts 65 and the connectors 64, the sliding parts 61 are controlled to drive the positioning pins 62 to be inserted and removed in the corresponding positioning parts 21.

[0024] A fixing groove 16 is provided in the middle of the bottom surface of the storage box 1. The fixing cylinder 12 is fixedly installed in the fixing groove 16. The fixing groove 16 in the middle of the bottom surface of the storage box 1 completes the installation and fixing of the fixing cylinder 12. The fixing cylinder 12 completes the installation and positioning of the telescopic rod 13. The telescopic rod 13 is installed in the fixing cylinder 12 by a limiting component to prevent the telescopic rod 13 from being pulled out of the fixing cylinder 12 and affecting the support and use of the telescopic rod 13.

[0025] Auxiliary support blocks 14 are fixedly installed at both ends of the bottom surface of the storage box 1 on the side away from the moving wheel 11. The auxiliary support blocks 14 cooperate with the moving wheel 11. There are two auxiliary support blocks 14. When the square storage box 1 is used on the body 3 of the transformer ratio tester, the bottom surface of the two auxiliary support blocks 14 is parallel to the bottom surface of the moving wheel 11. The auxiliary moving wheel 11 completes the support of the storage box 1. A groove 23 is opened in the middle of one side of the box cover 2. The groove 23 cooperates with the box cover 2. The groove 23 facilitates the opening and closing of the box cover 2.

[0026] Working principle: The transformer ratio tester body 3 is stored in the storage box 1 and the box cover 2. When it is necessary to carry the transformer ratio tester body 3 to test the transformer, the telescopic rod 13 in the fixed cylinder 12 is pulled out. The pulled-out rod controls the storage box 1 to tilt, so that the two moving wheels 11 installed on one side of the bottom of the storage box 1 contact the ground. With the cooperation of the telescopic rod 13 and the two moving wheels 11, it is convenient to carry the transformer ratio tester body 3 without having to carry it by hand, which improves the comfort of the operator's hands. When it is necessary to use the transformer ratio tester body 3, the telescopic rod 13 is retracted into the fixed cylinder 12, the storage box 1 is laid flat, and the box cover 2 is opened with the cooperation of the two rotating shafts 15 and the corresponding rotating cylinder 22, so that the transformer ratio tester body 3 can be used.

[0027] After the transformer ratio tester body 3 is used and the case cover 2 is closed, the two positioning pieces 21 are inserted into the corresponding positioning slots 211. After insertion, with the cooperation of the two sliding pieces 61 and the return spring 63 in the positioning assembly 6, the two positioning pins 62 are controlled to be inserted into the corresponding positioning pieces 21 respectively, thus completing the positioning and fixing of the positioning pieces 21 in the corresponding positioning slots 211, thereby completing the positioning and fixing of the case cover 2 after it is closed. After the case cover 2 is closed by the positioning assembly 6 and the positioning pieces 21, the second flexible pad 5 installed in the case cover 2, together with the first flexible pad 4 installed on the four sides and the second flexible pad 5 installed on the bottom of the storage box 1, protects the transformer ratio tester body 3 and prevents the transformer ratio tester body 3 from being damaged.

[0028] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A portable high-protection transformer turns ratio tester, comprising a storage box (1), characterized in that: The storage box (1) is equipped with a box cover (2) on its top surface. The storage box (1) is equipped with a transformer ratio tester body (3). A fixed cylinder (12) is fixedly installed in the middle of the bottom surface of the storage box (1). A telescopic pull rod (13) is slidably installed in one side of the fixed cylinder (12). Two moving wheels (11) are symmetrically installed in one side of the bottom surface of the storage box (1). The two moving wheels (11) cooperate with the telescopic pull rod (13). A rotating shaft (15) is symmetrically installed in one side of the top surface of the storage box (1). A rotating cylinder (22) is symmetrically installed in one side of the bottom surface of the box cover (2). The rotating cylinder (22) is sleeved on the surface of the rotating shaft (15). The box cover (2) is rotatably installed above the storage box (1) through the rotating shaft (15) and the rotating cylinder (22). A positioning component (21) is symmetrically installed on one side of the bottom surface of the box cover (2), and a positioning groove (211) is symmetrically opened on one side of the top surface of the storage box (1). There are two positioning components (21) and two positioning grooves (211). The positioning component (21) is slidably locked in the positioning groove (211). A positioning component (6) is installed on one side of the storage box (1) between the two positioning grooves (211).

2. The portable high-protection transformer turns ratio tester as described in claim 1, characterized in that, The positioning component (6) includes two sliding members (61) that slide relative to each other between two positioning slots (211). A positioning pin (62) is fixedly installed on one side of each of the two sliding members (61). A return spring (63) is fixedly installed between the two sliding members (61). The two positioning pins (62) are slidably inserted into the two positioning members (21) through the two sliding members (61) and the return spring (63). A first flexible pad (4) is fixedly installed on all four sides of the storage box (1). A second flexible pad (5) is fixedly installed on the bottom surface of the storage box (1) and on one side of the box cover (2). The transformer ratio tester body (3) cooperates with the first flexible pad (4) and the second flexible pad (5).

3. The portable high-protection transformer turns ratio tester as described in claim 2, characterized in that, Two connectors (64) are fixedly installed on one side of the surface of each of the two sliding members (61). There are two connectors (64). One end of each of the two connectors (64) is fixedly installed with a push-pull member (65). There are two push-pull members (65). The two push-pull members (65) slide relative to each other on one side of the surface of the storage box (1).

4. The portable high-protection transformer turns ratio tester as described in claim 1, characterized in that, The storage box (1) has a fixing groove (16) in the middle of its bottom surface, and the fixing cylinder (12) is fixedly installed in the fixing groove (16).

5. A portable high-protection transformer turns ratio tester as described in claim 1, characterized in that, The storage box (1) has auxiliary support blocks (14) fixedly installed at both ends on the side of the bottom surface away from the moving wheel (11), and the auxiliary support blocks (14) cooperate with the moving wheel (11).

6. A portable high-protection transformer turns ratio tester as described in claim 1, characterized in that, A groove (23) is provided in the middle of one side of the box cover (2), and the groove (23) cooperates with the box cover (2).

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