Precise clamp type current transformer

Abstract

The utility model relates to the technical field of current transformers, in particular to a precise clamp-type current transformer which comprises a clamp-type current transformer body, and mounting pieces rotationally connected to the clamp-type current transformer body are arranged at the bottom ends of the two sides of the clamp-type current transformer body. Storage grooves extending in the height direction of the clamp-type current transformer body are formed in the two sides, provided with the installation pieces, of the clamp-type current transformer body, one ends of the installation pieces are located in the storage grooves, rotating columns extend out of the two sides of the installation pieces, and the installation pieces are rotationally connected to the clamp-type current transformer body through the rotating columns. The mounting piece is rotated to be vertically stored in the storage groove to be attached to the clamp-type current transformer body, so that the two sides of the clamp-type current transformer body do not protrude, and the clamp-type current transformer body is convenient to carry and use at the same time.

Description

Technical Field

[0001] The present application relates to the technical field of current transformers, and in particular to a precision clamp-type current transformer. Background Art

[0002] A clamp-on current transformer, also known as a current transformer or current clamp, is a power measurement device widely used in current measurement in power systems and electrical equipment. A clamp-on current transformer is essentially a broadband transformer with a toroidal core. By connecting an ammeter and passing the measured wire through the toroidal core, the toroidal core measures the data and displays it on the ammeter.

[0003] In the prior art, in order to facilitate the operation of the clamp-on current transformer by the tester, a clamp-on current transformer with an ammeter is provided, so that the tester does not need to carry an additional ammeter when carrying the clamp-on current transformer. However, after the tester passes the wire through the annular magnetic core, the clamp-on current transformer with an ammeter is very likely to fall over and press the wire when the tester operates the ammeter, resulting in inaccurate test results.

[0004] It is easy for a person skilled in the art to think of providing a clamp-type current transformer with mounting plates on both sides of the bottom, and fixing the clamp-type current transformer by screwing bolts into the mounting plates so that when the tester operates the ammeter, the clamp-type current transformer placed on the ground will not fall over. However, the provision of the mounting plates causes the two sides of the clamp-type current transformer to bulge, making it inconvenient to carry. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this application is to provide a precision clamp-type current transformer to solve the technical problem in the existing technology that the clamp-type current transformer is very easy to fall over and press the wires, resulting in inaccurate test results.

[0006] The above-mentioned purpose of the present application is achieved through the following technical solutions: a precision clamp-type current transformer, including a clamp-type current transformer body, wherein the bottom ends of both sides of the clamp-type current transformer body are provided with mounting plates rotatably connected to the clamp-type current transformer body, and the clamp-type current transformer body is provided with receiving grooves extending along the height direction of the clamp-type current transformer body on both sides of the mounting plate, one end of the mounting plate is located in the receiving groove, and rotating columns extend from both sides, and the mounting plate is rotatably connected to the clamp-type current transformer body through the rotating columns.

[0007] By adopting the above technical solution, when the clamp-type current transformer body needs to be used, the mounting plate is rotated so that the mounting plate is in a horizontal state and contacts the ground, and then a nail or screw is used to align with the mounting plate and nailed in, so that the nail or screw passes through the mounting plate and is nailed into the ground to fix the clamp-type current transformer body. In this way, when the ammeter on the clamp-type current transformer body is used, the clamp-type current transformer body will not fall over. When the clamp-type current transformer body needs to be stored after use, the nail or screw is pulled out, and then the mounting plate is rotated so that the mounting plate is in a vertical state and stored in the storage groove to attach to the clamp-type current transformer body. In this way, there will be no protrusions on both sides of the clamp-type current transformer body, making the clamp-type current transformer body easy to carry and easy to use.

[0008] Furthermore, a suction cup is fixedly provided on the side of the mounting plate that contacts the ground, and the adsorption end of the suction cup faces the ground.

[0009] By adopting the above technical solution, although the storage groove and the arrangement of the mounting plate make the clamp-type current transformer body easy to carry and use, nails or screws need to be hammered in each time the clamp-type current transformer body is used. If the installation location is on a steel test platform, then nails or screws are difficult to drive in. The arrangement of the suction cup solves this technical problem. When the clamp-type current transformer body needs to be used, the mounting plate is rotated so that the mounting plate is in a horizontal state, so that the suction cup contacts the ground, and then pressure is applied to the mounting plate so that the suction cup adsorbs the ground, which makes the installation of the clamp-type current transformer body more convenient.

[0010] Furthermore, an auxiliary support component for enhancing the supporting effect of the mounting piece is provided between the mounting piece and the side wall of the clamp-type current transformer body.

[0011] Furthermore, the auxiliary support assembly includes a connecting rod with one end rotatably connected to the mounting plate and a support rod with one end rotatably connected to the side wall of the clamp-type current transformer body. The connecting rod and the support rod are arranged alternately, and the end of the connecting rod away from the mounting plate is provided with a rotating shaft passing through the connecting rod and the support rod, and the rotating shaft is rotatably connected to the connecting rod and the support rod.

[0012] By adopting the above technical solution, although the setting of the suction cup makes the installation of the clamp-type current transformer body more convenient, since the mounting plate is rotating, if the tester shakes the clamp-type current transformer body when operating the ammeter, the adsorption of the suction cup will loosen, causing the clamp-type current transformer body to easily fall over. The setting of the auxiliary support assembly solves this technical problem. When the tester rotates the mounting plate to make the suction cup adsorb on the ground, the connecting rod and the support rod are in a slant shape, forming a triangular support structure with the mounting plate and the side wall of the clamp-type current transformer body, thereby preventing the tester from shaking the clamp-type current transformer body when operating the ammeter, making the installation of the clamp-type current transformer body more stable.

[0013] Furthermore, a receiving groove for receiving the connecting rod is provided on a side of the mounting plate away from the suction cup, and the connecting rod is located in the receiving groove and is rotatably connected to the mounting plate.

[0014] By adopting the above-mentioned technical solution, although the setting of the auxiliary support assembly makes the installation of the clamp-type current transformer body more stable, when the clamp-type current transformer body is stored, the auxiliary support assembly will cause the mounting plate to be unable to fully adhere to the side wall of the clamp-type current transformer body, causing the mounting plate to protrude from the side wall of the clamp-type current transformer body, which is inconvenient for the tester to carry. The setting of the storage groove solves this technical problem. The setting of the storage groove enables the tester to rotate the mounting plate into the storage groove, and the auxiliary support assembly will be stored in the storage groove without blocking the mounting plate, so that the mounting plate can be completely stored in the storage groove and will not protrude from the side wall of the clamp-type current transformer body, making it easy for the tester to carry the clamp-type current transformer body.

[0015] Furthermore, a protective device is provided above the top of the receiving groove to prevent the mounting piece from extending out of the receiving groove.

[0016] Furthermore, the protection device includes a connecting boss fixedly connected to the side wall of the clamp-type current transformer body, and the connecting boss is plugged with a baffle for blocking the receiving groove.

[0017] By adopting the above technical solution, although the setting of the mounting plate and the storage groove makes the clamp-type current transformer body easy to carry and use, when the tester moves the clamp-type current transformer body, it will shake. This shaking will cause the mounting plate to rotate and extend out of the storage groove. If the side of the mounting plate is under pressure at this time, the mounting plate will be very easy to break. The setting of the protective device solves this technical problem. When the mounting plate is rotated and stored in the storage groove, the baffle is pushed downward to block the storage groove. In this way, there is no space for the mounting plate to extend out of the storage groove, and it will not extend out of the storage groove. The situation where the side of the mounting plate is under pressure and causes the mounting plate to break will not occur, thereby improving the service life of the mounting plate.

[0018] Furthermore, auxiliary handles are fixedly provided on both sides of the top of the baffle.

[0019] By adopting the above technical solution, the auxiliary handle makes it easier for the tester to pull or push the baffle.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] By setting the storage groove and the mounting plate, it is possible to rotate the mounting plate so that the mounting plate is in a horizontal state so that the suction cup contacts the ground, and then apply pressure to the mounting plate so that the suction cup adheres to the ground. In this way, when the ammeter on the clamp-type current transformer body is used, the clamp-type current transformer body will not fall over. When the clamp-type current transformer body needs to be stored after use, the mounting plate is rotated so that the mounting plate is in a vertical state and stored in the storage groove and attached to the clamp-type current transformer body. In this way, there will be no protrusions on both sides of the clamp-type current transformer body, making the clamp-type current transformer body easy to carry and easy to use.

[0022] By setting up the auxiliary support assembly, when the tester rotates the mounting plate to make the suction cup adhere to the ground, the connecting rod and the support rod are in a slant shape, forming a triangular support structure with the mounting plate and the side wall of the clamp-type current transformer body, thereby preventing the tester from shaking the clamp-type current transformer body when operating the ammeter, making the installation of the clamp-type current transformer body more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 1 is a schematic diagram of the overall structure of the embodiment;

[0024] Figure 2 This is a bottom view of the overall structure of the embodiment;

[0025] Figure 3 yes Figure 1 Enlarged view of part A in the middle.

[0026] Figure numerals: 1. Clamp-type current transformer body; 10. Mounting plate; 11. Storage groove; 2. Suction cup; 3. Auxiliary support assembly; 30. Connecting rod; 31. Support rod; 32. Rotating shaft; 4. Storage slot; 5. Protective device; 50. Connecting boss; 51. Baffle; 52. Auxiliary handle. DETAILED DESCRIPTION

[0027] The present application is further described in detail below with reference to the accompanying drawings.

[0028] Example, see Figure 1 、 Figure 2A precision clamp-type current transformer includes a clamp-type current transformer body 1. The bottom ends of both sides of the clamp-type current transformer body 1 are provided with mounting pieces 10 that are rotatably connected to the clamp-type current transformer body 1. The clamp-type current transformer body 1 is provided with a receiving groove 11 extending along the height direction of the clamp-type current transformer body 1 on both sides of the mounting piece 10. One end of the mounting piece 10 is located in the receiving groove 11, and a rotating column extends on both sides. The mounting piece 10 is rotatably connected to the clamp-type current transformer body 1 through the rotating column. A suction cup 2 is fixed on the side of the mounting piece 10 that contacts the ground, and the suction end of the suction cup 2 faces the ground. When using the clamp-type current transformer When the transformer body 1 is in use, the mounting piece 10 is rotated so that the mounting piece 10 is in a horizontal state so that the suction cup 2 contacts the ground, and then pressure is applied to the mounting piece 10 so that the suction cup 2 is adsorbed on the ground. In this way, when the ammeter on the clamp-type current transformer body is used, the clamp-type current transformer body 1 will not fall over. When the clamp-type current transformer body 1 needs to be stored after use, the mounting piece 10 is rotated so that the mounting piece 10 is in a vertical state and stored in the storage groove 11 to attach the clamp-type current transformer body 1. In this way, there will be no protrusions on both sides of the clamp-type current transformer body 1, making the clamp-type current transformer body 1 easy to carry and easy to use.

[0029] Although the setting of the suction cup 2 makes the clamp-type current transformer body 1 more convenient to install, since the mounting piece 10 is rotating, if the tester shakes the clamp-type current transformer body 1 when operating the ammeter, the adsorption of the suction cup 2 will loosen, causing the clamp-type current transformer body 1 to easily fall over. In order to solve this technical problem, refer to Figure 3 In this embodiment, an auxiliary support assembly 3 for enhancing the supporting effect of the mounting piece 10 is provided between the mounting piece 10 and the side wall of the clamp-type current transformer body 1. The auxiliary support assembly 3 includes a connecting rod 30 rotatably connected to the mounting piece 10 at one end and a support rod 31 rotatably connected to the side wall of the clamp-type current transformer body 1 at one end. The connecting rod 30 and the support rod 31 are arranged alternately. The end of the connecting rod 30 away from the mounting piece 10 is provided with a rotating shaft 32 passing through the connecting rod 30 and the support rod 31. The rotating shaft 32 is rotatably connected to the connecting rod 30 and the support rod 31. When the tester rotates the mounting piece 10 to make the suction cup 2 adsorb on the ground, the connecting rod 30 and the support rod 31 are in a slant shape, forming a triangular support structure with the mounting piece 10 and the side wall of the clamp-type current transformer body 1, thereby preventing the tester from shaking the clamp-type current transformer body 1 when operating the ammeter, making the clamp-type current transformer body 1 more firmly installed.

[0030] Although the setting of the auxiliary support assembly 3 makes the installation of the clamp-type current transformer body 1 more stable, when the clamp-type current transformer body 1 is stored, the auxiliary support assembly 3 will cause the mounting plate 10 to be unable to fully adhere to the side wall of the clamp-type current transformer body 1, causing the mounting plate 10 to protrude from the side wall of the clamp-type current transformer body 1, which is inconvenient for the tester to carry. In order to solve this technical problem, in this embodiment, a storage groove 4 for accommodating the connecting rod 30 is opened on the side of the mounting plate 10 away from the suction cup 2. The connecting rod 30 is located in the storage groove 4 and is rotatably connected to the mounting plate 10. The setting of the storage groove 4 allows the tester to rotate the mounting plate 10 to the storage groove 11. The auxiliary support assembly 3 will be stored in the storage groove 4 and will not block the mounting plate 10, so that the mounting plate 10 can be completely stored in the storage groove 11 and will not protrude from the side wall of the clamp-type current transformer body 1, making it easy for the tester to carry the clamp-type current transformer body 1.

[0031] Although the arrangement of the mounting piece 10 and the receiving groove 11 makes the clamp-type current transformer body 1 easy to carry and use, when the tester carries the clamp-type current transformer body 1 and moves, it will shake. This shaking will cause the mounting piece 10 to rotate and extend out of the receiving groove 11. If the side of the mounting piece 10 is under pressure at this time, the mounting piece 10 will be very easy to break. In order to solve this technical problem, in this embodiment, a protective device 5 is provided above the top of the receiving groove 11 to prevent the mounting piece 10 from extending out of the receiving groove 11. The protective device 5 includes a fixed A connecting boss 50 is connected to the side wall of the clamp-type current transformer body 1, and the connecting boss 50 is plugged with a baffle 51 for blocking the receiving groove 11. Auxiliary handles 52 are fixed on both sides of the top of the baffle 51. When the mounting piece 10 is rotated to be stored in the receiving groove 11, the baffle 51 is pushed downward so that the baffle 51 blocks the receiving groove 11. In this way, there is no space for the mounting piece 10 to extend out of the receiving groove 11, and it will not extend out of the receiving groove 11. The side of the mounting piece 10 will not be subjected to pressure, causing the mounting piece 10 to break, thereby improving the service life of the mounting piece 10.

[0032] Specific implementation process: when the clamp-type current transformer body 1 needs to be used, the mounting piece 10 is rotated so that the mounting piece 10 is in a horizontal state so that the suction cup 2 contacts the ground, and then pressure is applied to the mounting piece 10 so that the suction cup 2 is adsorbed on the ground. When the clamp-type current transformer body needs to be stored, the mounting piece 10 is rotated so that the mounting piece 10 is in a vertical state and stored in the storage groove 11 to attach the clamp-type current transformer body 1, and then the baffle 51 is pushed downward so that the baffle 51 blocks the storage groove 11.

[0033] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A precision clamp-type current transformer, comprising a clamp-type current transformer body (1), characterized in that: The bottom ends of both sides of the clamp-type current transformer body (1) are provided with mounting pieces (10) rotatably connected to the clamp-type current transformer body (1); the clamp-type current transformer body (1) is provided with receiving grooves (11) extending along the height direction of the clamp-type current transformer body (1) on both sides of the mounting piece (10); one end of the mounting piece (10) is located in the receiving groove (11), and rotating columns extend from both sides; the mounting piece (10) is rotatably connected to the clamp-type current transformer body (1) via the rotating columns.

2. A precision clamp-type current transformer according to claim 1, characterized in that: A suction cup (2) is fixedly provided on the side of the mounting plate (10) that contacts the ground, and the suction end of the suction cup (2) faces the ground.

3. A precision clamp-type current transformer according to claim 1, characterized in that: An auxiliary support component (3) for enhancing the supporting effect of the mounting piece (10) is provided between the mounting piece (10) and the side wall of the clamp-type current transformer body (1).

4. A precision clamp-type current transformer according to claim 3, characterized in that: The auxiliary support assembly (3) comprises a connecting rod (30) having one end rotatably connected to the mounting plate (10) and a support rod (31) having one end rotatably connected to the side wall of the clamp-type current transformer body (1). The connecting rod (30) and the support rod (31) are arranged in an alternating manner. The end of the connecting rod (30) away from the mounting plate (10) is provided with a rotating shaft (32) passing through the connecting rod (30) and the support rod (31). The rotating shaft (32) is rotatably connected to the connecting rod (30) and the support rod (31).

5. A precision clamp-type current transformer according to claim 4, characterized in that: A receiving groove (4) for receiving a connecting rod (30) is provided on a side of the mounting plate (10) away from the suction cup (2); the connecting rod (30) is located in the receiving groove (4) and is rotatably connected to the mounting plate (10).

6. The precision clamp-type current transformer according to claim 1, characterized in that: A protective device (5) is provided above the top of the receiving groove (11) for preventing the mounting piece (10) from extending out of the receiving groove (11).

7. A precision clamp-type current transformer according to claim 6, characterized in that: The protection device (5) comprises a connection boss (50) fixedly connected to the side wall of the clamp-type current transformer body (1); the connection boss (50) is plugged with a baffle (51) for blocking the receiving groove (11).

8. A precision clamp-type current transformer according to claim 7, characterized in that: Auxiliary handles (52) are fixedly provided on both sides of the top end of the baffle (51).

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