Current transformer with anti-interference performance

Abstract

The utility model discloses a current transformer with anti-interference performance, and relates to the technical field of current transformers, in particular to the current transformer with anti-interference performance, which is fixed on a mounting plate, and the current transformer is mounted on the mounting plate. The current transformer is provided with a fixing mechanism and is used for preventing the current transformer from loosening after being fixed with the mounting plate, the fixing mechanism comprises a main body assembly, the main body assembly comprises pin heads mounted at the two ends of the current transformer in a penetrating manner, pin rods mounted in the pin heads in a sliding manner, guide blocks fixed at the bottoms of the pin rods, and four cavity grooves formed in the lower ends of the pin heads and distributed circumferentially; the convex block is fixed at the lower end of the inner wall of the positioning clamping head; the nut is mounted on the outer wall of the upper end of the pin head in a threaded manner; the fixing mechanism is used for replacing a bolt for fixing and use, the nut is prevented from loosening easily, and instability of the current transformer after installation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, and particularly relates to a current transformer with anti-interference performance. Background Technique

[0002] A current transformer usually consists of a closed iron core and windings. At the same time, the primary winding of the current transformer has fewer turns and the secondary winding has more turns, so that when the current transformer is working, the secondary circuit remains closed, thus achieving the effect of a measuring instrument.

[0003] It is found that the publication number: CN218768957 discloses a current transformer with anti-interference. In this technology, "a current transformer with anti-interference, which relates to the technical field of current transformers. The current transformer with anti-interference includes a box body, a sleeve is fixedly connected to the outer wall of the box body, the outer wall of the box body is slidably connected to the outer wall of a rotating rod, a clamping block is fixedly connected to the outer wall of the rotating rod, the clamping block is slidably connected to the inner wall of a clamping groove, the clamping groove is opened on a turning plate, a base is fixedly connected to the outer wall of the turning plate, and a current transformer is fixedly connected to the top of the base" and other technical solutions, and has technical effects such as "by setting a turning plate, a rotating rod, a sleeve, and a limiting seat, when the current transformer is not in use, the turning plate can be rotated by rotating the rotating rod, and the rotating rod and the turning plate are limited and fixed by the limiting seat, so that the current transformer is protected by the turning plate and the box body, preventing external dust from covering the current transformer when it is not in use and interfering with the accuracy of the current transformer measurement during the next use".

[0004] In the actual application process of the current transformer in the above solution, the current transformer is usually directly fixed on the mounting plate by bolts; however, when the space below the mounting plate is small, there is no space to install the nut after the bolt penetrates; and when the equipment is put into operation, the generated vibration often causes the bolts to loosen, which may further lead to the instability of the current transformer, thus affecting the accuracy of the measurement result and more likely bringing non-negligible safety hazards. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a current transformer with anti-interference performance, which has the characteristics that when the space below the mounting plate is small, the fixing mechanism can be used to replace the bolts for fixing, and it can prevent the nuts from being easily loosened, avoiding the instability after the current transformer is installed.

[0006] To achieve the above object, the utility model is realized through the following technical solutions: A current transformer with anti-interference performance is fixed to a mounting plate, and a current transformer is installed on the mounting plate. A fixing mechanism is arranged on the current transformer and is used to prevent the current transformer from loosening after being fixed to the mounting plate. The fixing mechanism includes:

[0007] The main body component includes a pin head penetrating through both ends of a current transformer, a pin rod slidably installed inside the pin head, a guide block fixed at the bottom of the pin rod, four cavity grooves circumferentially distributed at the lower end of the pin head, positioning chucks rotatably installed inside the cavity grooves through a rotating shaft, bumps fixed at the lower end inner wall of the positioning chucks, and a nut threadedly installed on the outer wall of the upper end of the pin head;

[0008] The anti-loosening component includes an annular shell sleeved and installed on the outer wall of the upper end of the pin head, and the annular shell is located below the nut.

[0009] Preferably, the main body component further includes a return spring installed at the upper end inside the pin head, and the return spring is sleeved and installed on the annular shell.

[0010] Preferably, an annular groove is formed on the outer wall of the guide block, and the bump is located inside the annular groove on the guide block.

[0011] Preferably, the upper end of the positioning chuck is of an inclined surface structure, and the upper end surface of the positioning chuck is of a frosted structure.

[0012] Preferably, the anti-loosening component further includes an annular frame slidably installed through the upper end inside the annular shell, and an elastic sheet installed inside the annular shell.

[0013] Preferably, the anti-loosening component further includes grooves formed on the outer edge of the elastic sheet, and the grooves are circumferentially distributed on the elastic sheet.

[0014] Beneficial effects

[0015] The utility model provides a current transformer with anti-interference performance. Compared with the prior art, the following beneficial effects are achieved:

[0016] (1) After the current transformer is installed on the mounting plate, press the pin rod again. The guide block cooperates with the bump to drive the positioning chuck to turn inwards and be received into the cavity groove, so that the pin head can penetrate through the current transformer and the mounting plate. Then release the pressed pin rod, and the pressure of the return spring rebounding pushes the pin rod. The guide block cooperates with the bump to drive the positioning chuck to turn outwards, so that the upper end of the positioning chuck abuts against the bottom of the mounting plate. Then, put the anti-loosening component on the upper end of the pin head, and install the nut on the upper end of the pin head and thread it tightly, thereby fixing the current transformer on the mounting plate; when the space below the mounting plate is small, the fixing mechanism can be used instead of bolts for fixing.

[0017] (2) After the nut is installed on the pin head and tightened, the nut pushes the annular frame to squeeze the elastic sheet, and at the same time, the pressure of the elastic sheet rebounding pushes the annular frame to give a reverse thrust to the nut, thereby preventing the nut from being easily loosened and avoiding the instability after the installation of the current transformer. Description of the drawings

[0018] Figure 1 Schematic diagram of the three-dimensional structure of the present utility model;

[0019] Figure 2 Schematic diagram of the sectional structure of the present utility model;

[0020] Figure 3 For the present utility model Figure 2 Schematic diagram of the structure of the local part A in the present utility model;

[0021] Figure 4 Schematic diagram of the sectional structure of the anti-loosening component in the present utility model.

[0022] In the figure: 1. mounting plate; 2. current transformer; 3. fixing mechanism; 31. main body component; 311. pin head; 312. pin rod; 313. guiding block; 314. cavity groove; 315. rotating shaft; 316. positioning chuck; 317. convex block; 318. nut; 319. return spring; 32. anti-loosening component; 321. ring shell; 322. ring frame; 323. elastic sheet; 324. groove. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-4 , the present utility model provides a technical solution for a current transformer with anti-interference: a current transformer with anti-interference is fixed to the mounting plate 1, a current transformer 2 is installed on the mounting plate 1, and a fixing mechanism 3 is provided on the current transformer 2 and is used to prevent the current transformer 2 from loosening after being fixed to the mounting plate 1. The fixing mechanism 3 includes:

[0025] The main body component 31, including a pin head 311 penetrated through both ends of the current transformer 2, a pin rod 312 slidably installed inside the pin head 311, a guiding block 313 fixed to the bottom of the pin rod 312, four cavity grooves 314 distributed circumferentially opened at the lower end of the pin head 311, a positioning chuck 316 rotatably installed inside the cavity groove 314 through a rotating shaft 315, a convex block 317 fixed to the lower end inner wall of the positioning chuck 316, a nut 318 threadedly installed on the outer wall of the upper end of the pin head 311, a return spring 319 installed inside the upper end of the pin head 311, and the return spring 319 is sleeved and installed on the ring shell 321;

[0026] The anti-loosening component 32 includes an annular shell 321 sleeved and installed on the outer wall of the upper end of the pin head 311, and the annular shell 321 is located below the nut 318.

[0027] In this embodiment, after the current transformer 2 is installed on the mounting plate 1, press the pin rod 312 to drive the positioning chuck 316 to turn inwards and be received in the cavity 314 through the cooperation of the guide block 313 and the convex block 317, so that the pin head 311 can penetrate through the current transformer 2 and the mounting plate 1. Then release the pressed pin rod 312 and push the pin rod 312 by the pressure of the return spring 319. The pin rod 312 drives the positioning chuck 316 to turn outwards through the cooperation of the guide block 313 and the convex block 317, so that the upper end of the positioning chuck 316 abuts against the bottom of the mounting plate 1. Then, put the anti-loosening component 32 on the upper end of the pin head 311, and install the nut 318 on the upper end of the pin head 311 and tighten it by thread, thereby fixing the current transformer 2 on the mounting plate 1.

[0028] Specifically, an annular groove is formed on the outer wall of the guide block 313, and the convex block 317 is located inside the annular groove on the guide block 313.

[0029] In this embodiment, when the guide block 313 moves up and down, the convex block 317 can be toggled through the annular groove, thereby driving the positioning chuck 316 to rotate around the rotating shaft 315 as the axis.

[0030] Specifically, the upper end of the positioning chuck 316 is of an inclined surface structure, and the upper end surface of the positioning chuck 316 is of a frosted structure.

[0031] In this embodiment, after the positioning chuck 316 turns outwards, its upper end can fit with the bottom of the mounting plate 1, and the friction force is increased.

[0032] Specifically, the anti-loosening component 32 further includes an annular frame 322 slidably installed through the upper end inside the annular shell 321, and an elastic sheet 323 installed inside the annular shell 321.

[0033] In this embodiment, after the nut 318 is installed and tightened on the pin head 311, the nut 318 pushes the annular frame 322 to squeeze the elastic sheet 323. At the same time, the elastic sheet 323 rebounds to push the annular frame 322 to give the nut 318 a reverse thrust, thereby preventing the nut 318 from being easily loosened.

[0034] Specifically, the anti-loosening component 32 further includes a groove 324 formed on the outer edge of the elastic sheet 323, and the grooves 324 are circumferentially distributed on the elastic sheet 323.

[0035] In this embodiment, the elastic sheet 323 has resilience when being squeezed, and the grooves 324 enable the elastic sheet 323 to have a certain shrinking space when being squeezed.

[0036] The working principle and usage process of the present utility model are as follows: First, after the current transformer 2 is installed on the mounting plate 1, press the pin rod 312, and the positioning chuck 316 is driven by the guiding block 313 to cooperate with the convex block 317 to turn inwards and be received into the cavity 314, so that the pin head 311 can penetrate through the current transformer 2 and the mounting plate 1. Then release the pressed pin rod 312, and the pressure of the return spring 319 rebounds to push the pin rod 312. The pin rod 312 drives the positioning chuck 316 to turn outwards through the guiding block 313 cooperating with the convex block 317, so that the upper end of the positioning chuck 316 abuts against the bottom of the mounting plate 1. Then, put the anti-loosening component 32 on the upper end of the pin head 311, and install the nut 318 on the upper end of the pin head 311 and tighten it threadedly, thereby fixing the current transformer 2 on the mounting plate 1. Moreover, after the nut 318 is tightened, the nut 318 pushes the ring frame 322 to squeeze the elastic piece 323, and at the same time, the pressure of the elastic piece 323 rebounds to push the ring frame 322 to give the nut 318 a reverse thrust, thereby preventing the nut 318 from being easily loosened.

[0037] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0038] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A current transformer with anti-interference ability, fixed to the mounting plate (1), and the current transformer (2) is installed on the mounting plate (1), characterized in that: A fixing mechanism (3) is provided on the current transformer (2) and is used to prevent the current transformer (2) from loosening after being fixed to the mounting plate (1). The fixing mechanism (3) includes: A main body assembly (31), including a pin head (311) penetrating through both ends of the current transformer (2), a pin rod (312) slidably installed inside the pin head (311), a guide block (313) fixed to the bottom of the pin rod (312), four cavity grooves (314) circumferentially distributed at the lower end of the pin head (311), a positioning chuck (316) rotatably installed inside the cavity groove (314) through a rotating shaft (315), a convex block (317) fixed to the lower end inner wall of the positioning chuck (316), and a nut (318) threadedly installed on the outer wall of the upper end of the pin head (311); A loosening prevention assembly (32), including an annular shell (321) sleeved and installed on the outer wall of the upper end of the pin head (311), and the annular shell (321) is located below the nut (318).

2. The current transformer with anti-interference property according to claim 1, characterized in that: The main body assembly (31) further includes a return spring (319) installed inside the upper end of the pin head (311), and the return spring (319) is sleeved and installed on the annular shell (321).

3. The current transformer with anti-interference property according to claim 1, characterized in that: A ring groove is formed on the outer wall of the guide block (313), and the convex block (317) is located inside the ring groove on the guide block (313).

4. The current transformer with anti-interference property according to claim 1, characterized in that: The upper end of the positioning chuck (316) is of an inclined surface structure, and the upper surface of the positioning chuck (316) is of a frosted structure.

5. The current transformer with anti-interference property according to claim 1, characterized in that: The loosening prevention assembly (32) further includes an annular frame (322) slidably installed through the upper end inside the annular shell (321), and an elastic sheet (323) installed inside the annular shell (321).

6. The current transformer with anti-interference property according to claim 5, characterized in that: The loosening prevention assembly (32) further includes a groove (324) formed on the outer edge of the elastic sheet (323), and the groove (324) is circumferentially distributed on the elastic sheet (323).

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