Over-current protection device of distribution transformer

Abstract

The utility model discloses a distribution transformer overcurrent protection device, which comprises a mounting plate, a fixing assembly is mounted in the mounting plate, the fixing assembly comprises a first limiting groove formed in the outer wall of one end of the mounting plate, two limiting clamps are connected in the first limiting groove in a sliding manner, and the two limiting clamps are symmetrically arranged. The outer walls of the sides, close to each other, of the two limiting clamps are each rotationally connected with a connecting rod, the ends, close to each other, of the two connecting rods are rotationally connected with the same connecting frame, the outer wall of the top of the connecting frame is fixedly connected with a pull rod, and the pull rod is slidably inserted into the mounting plate. According to the utility model, the fixing assembly is arranged, the connecting pieces of the protector body are separately arranged, and then the protector body is fixed in a clamping manner, so that the installation and disassembly of the protector body are more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of protectors, in particular to an overcurrent protection device for a distribution transformer. Background Art

[0002] The overcurrent protector is a device used for current overload protection. When it enters the setting state, the relay inside the protection will be automatically released, and the protector will exit the protection state, effectively preventing the misoperation of the motor in the setting state. It can be widely used in the protection and monitoring of industrial three-phase motors and other electrical appliances in machinery, metallurgy, building materials, chemical industry, textile industry, etc.

[0003] After searching, a utility model with Chinese patent publication number CN210575759U discloses an overcurrent protector, including an overcurrent protector body and a frame. The overcurrent protector body is placed inside the frame, and the bottoms on both sides of the overcurrent protector body are fixedly connected to one end of two support plates through torsion springs, and the other ends of the inner sides of the two support plates are fixedly connected to the tops on both sides of the overcurrent protector body through two first springs, and the other ends of the outer sides of the two support plates are fixedly provided with two clamping columns.

[0004] As in the above-mentioned device, the protector is generally fixed by multiple bolts, which makes the installation of the device inconvenient and makes it cumbersome for the staff to disassemble and repair the device, thereby greatly reducing the practicality of the device. Utility Model Content

[0005] The purpose of the utility model is to provide an overcurrent protection device for a distribution transformer to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an overcurrent protection device for a distribution transformer, comprising a mounting plate, characterized in that a fixing component is installed inside the mounting plate, the fixing component comprises a limit groove 1 opened on the outer wall at one end of the mounting plate, two limit cards are slidably connected in the limit groove 1, and the two limit cards are symmetrically arranged, the outer walls on the sides of the two limit cards close to each other are rotatably connected to a connecting rod, the ends of the two connecting rods close to each other are rotatably connected to the same connecting frame, the top outer wall of the connecting frame is fixedly connected to a pull rod, and the pull rod is slidably inserted in the mounting plate, the ends of the two limit cards away from each other are fixedly connected to multiple springs, and the multiple springs on one side are respectively fixedly connected to the inner walls on both sides of the limit groove 1.

[0007] As a further preferred embodiment of the present technical solution, the same protector body is clamped between the two limit cards, a card slot corresponding to the limit card is respectively opened on the outer walls on both sides of the protector body, and an amplifying component is installed on the top of the protector body.

[0008] By setting the connecting parts of the protector body separately and then using a snap-on method to fix the protector body, the installation and disassembly of the protector body are made more convenient. The protector body is squeezed between the two limit cards. As the protector body slides along the inclined surface of the limit card, the two limit cards will overcome the spring thrust and slide to both sides along the limit slot. When the card head of the limit card is in the card slot position of the protector body, the spring can drive the card head of the limit card into it. At this time, the position of the protector body will be firmly fixed. If the protector body needs to be removed, just pull the pull rod forward, and the pull rod drives the connecting frame to move synchronously. The connecting frame can drive the two limit cards away from each other through the two connecting rods, and the protector body is no longer restricted and can be easily removed.

[0009] As a further preferred embodiment of the present technical solution, the amplifying component includes a mounting frame fixedly connected to the top outer wall of the protector body, and the inner walls on both sides are each provided with a limiting groove 2, and a mounting block is slidably connected in each of the two limiting grooves 2, and the two mounting blocks are rotatably connected with the same convex lens, and the convex lens can face the panel of the protector body.

[0010] If the user is an elderly person and the words on the surface of the protector body are small, at this time, just grab one end of the convex lens and pull it outward, the convex lens will drive the mounting block to slide in the two limit grooves respectively, and finally put down the convex lens so that it is directly in front of the protector body panel. The user can see the enlarged picture through the convex lens, thereby ensuring that the device is more convenient to use.

[0011] As a further preferred embodiment of the technical solution, the outer walls of the two limit cards that are away from each other are slidably connected with multiple limit rods, and the multiple limit rods on one side are respectively fixedly connected to the inner walls on both sides of the limit groove, and the multiple limit rods are respectively inside multiple springs.

[0012] As a further preferred embodiment of the present technical solution, an extension block is fixedly connected to one end of the top of the pull rod, and the diameter of the extension block is greater than the diameter of the pull rod.

[0013] As a further preferred embodiment of the present technical solution, two extension rings are respectively arranged on the outer walls on both sides of the mounting plate, and a through hole is respectively arranged inside the plurality of extension rings.

[0014] The utility model provides an overcurrent protection device for a distribution transformer, which has the following beneficial effects:

[0015] (1) The utility model sets a fixing component, sets the connecting parts of the protector body separately, and then fixes the protector body by means of a snap connection, so that the installation and removal of the protector body are more convenient. The protector body is squeezed between the two limit cards. As the protector body slides along the inclined surface of the limit card, the two limit cards will overcome the spring thrust and slide to both sides along the limit slot. When the clamping head of the limit card is in the clamping slot position of the protector body, the spring can drive the clamping head of the limit card into it. At this time, the position of the protector body will also be firmly fixed. If it is necessary to remove the protector body, just pull the pull rod toward it, and the pull rod drives the connecting frame to move synchronously. The connecting frame can drive the two limit cards to move away from each other through the two connecting rods, and the protector body is no longer restricted and can be easily removed.

[0016] (2) The utility model provides a magnifying component. If the user is an elderly person and the characters on the surface of the protector body are relatively small, the user only needs to grab one end of the convex lens and pull it outward. The convex lens will drive the mounting block to slide in the two limit grooves respectively. Finally, the convex lens is lowered so that it is located directly in front of the protector body panel. The user can see the magnified image through the convex lens, thereby ensuring that the device is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the fixing assembly of the utility model;

[0019] Figure 3 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0020] Figure 4 For the utility model Figure 2 The enlarged structural diagram at B in the middle;

[0021] In the figure: 1. mounting plate; 2. extension ring; 3. protector body; 4. extension block; 5. fixing assembly; 6. amplifying assembly; 501. limit slot one; 502. limit card; 503. connecting rod; 504. connecting frame; 505. pull rod; 506. spring; 507. limit rod; 601. mounting frame; 602. limit slot two; 603. mounting block; 604. convex lens. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] The utility model provides a technical solution: Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, an overcurrent protection device for a distribution transformer includes a mounting plate 1, which is characterized in that: a fixing component 5 is installed inside the mounting plate 1, and the fixing component 5 includes a limiting groove 501 opened on the outer wall of one end of the mounting plate 1, and two limiting cards 502 are slidably connected in the limiting groove 501, and the two limiting cards 502 are symmetrically arranged, and the outer walls of the two limiting cards 502 on the side close to each other are rotatably connected to a connecting rod 503, and the ends of the two connecting rods 503 close to each other are rotatably connected to the same connecting frame 504, and the top outer wall of the connecting frame 504 is fixedly connected to a pull rod 505, and the pull rod 505 is slidably inserted in the mounting plate 1, and the ends of the two limiting cards 502 away from each other are fixedly connected to multiple springs 506, and the multiple springs 506 on one side are respectively fixedly connected to the inner walls on both sides of the limiting groove 501.

[0024] The same protector body 3 is clamped between the two limit cards 502 , and a card slot corresponding to the limit card 502 is respectively opened on the outer walls of both sides of the protector body 3 , and an amplifying component 6 is installed on the top of the protector body 3 .

[0025] The protector body 3 is squeezed toward between the two limit cards 502. As the protector body 3 slides along the inclined surface of the limit card 502, the two limit cards 502 will overcome the thrust of the spring 506 and slide to both sides along the limit slot 1 501. When the clamping head of the limit card 502 is in the clamping slot position of the protector body 3, the spring 506 can drive the clamping head of the limit card 502 to enter therein. At this time, the position of the protector body 3 will also be firmly fixed. If the protector body 3 needs to be removed, just pull the pull rod 505 toward it, and the pull rod 505 drives the connecting frame 504 to move synchronously. The connecting frame 504 can drive the two limit cards 502 away from each other through the two connecting rods 503, and the protector body 3 is no longer restricted and can be easily removed.

[0026] like Figure 1 and Figure 3 As shown, the amplifying component 6 includes a mounting frame 601 fixedly connected to the top outer wall of the protector body 3, and a limiting groove 602 is opened on the inner walls on both sides. A mounting block 603 is slidably connected in the two limiting grooves 602 respectively, and the two mounting blocks 603 are rotatably connected to the same convex lens 604, which can face the panel of the protector body 3.

[0027] If the user is an elderly person and the characters on the surface of the protector body 3 are relatively small, at this time, just grab one end of the convex lens 604 and pull it outwards, the convex lens 604 will drive the mounting block 603 to slide in the two limiting grooves 602 respectively, and finally put down the convex lens 604 so that it is directly in front of the panel of the protector body 3. The user can see the enlarged picture through the convex lens 604, thereby ensuring that the device is more convenient to use.

[0028] like Figure 1 and Figure 2 As shown, the outer walls of the two limit cards 502 that are away from each other are slidably inserted with multiple limit rods 507, and the multiple limit rods 507 on one side are respectively fixedly connected to the inner walls on both sides of the limit slot 501, and the multiple limit rods 507 are respectively located inside the multiple springs 506, which is beneficial to increase the stability of the limit card 502 during the movement process and can prevent the spring 506 from bending.

[0029] like Figure 2 As shown, an extension block 4 is fixedly connected to one end of the top of the pull rod 505, and the diameter of the extension block 4 is larger than the diameter of the pull rod 505, so that the pulling process of the pull rod 505 is more convenient.

[0030] like Figure 1 and Figure 2 As shown, two extension rings 2 are provided on the outer walls of both sides of the mounting plate 1, and a through hole is provided inside each of the extension rings 2. The mounting plate 1 can be fixed to an external device by using bolts and the extension rings 2.

[0031] The utility model provides an overcurrent protection device for a distribution transformer, and the specific working principle is as follows:

[0032] First, use bolts and multiple extension rings 2 to fix the mounting plate 1 on the external device. Since the mounting plate 1 is in a flat state, the installation process will become relatively simple. Then, the protector body 3 is squeezed between the two limit cards 502. As the protector body 3 slides along the inclined surface of the limit card 502, the two limit cards 502 will overcome the thrust of the spring 506 and slide along the limit slot 1 501 to both sides respectively. When the card head of the limit card 502 is in the card slot position of the protector body 3, the spring 506 can drive the card head of the limit card 502 to enter it. At this time, the position of the protector body 3 will also be firmly fixed. If the protector body 3 needs to be removed, just go to By pulling the pull rod 505, the pull rod 505 drives the connecting frame 504 to move synchronously, and the connecting frame 504 can drive the two limit cards 502 to move away from each other through the two connecting rods 503, and the protector body 3 is no longer restricted and can be easily removed. When the device is in use, if the user is an elderly person and the words on the surface of the protector body 3 are also small, at this time, just grab one end of the convex lens 604 and pull it outward, the convex lens 604 will drive the mounting block 603 to slide in the two limit grooves 602 respectively, and finally put down the convex lens 604 so that it is directly in front of the panel of the protector body 3, and the user can see the enlarged picture through the convex lens 604, thereby ensuring that the use of the device is more convenient.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A distribution transformer overcurrent protection device, comprising a mounting plate (1), characterized in that: A fixing component (5) is installed inside the mounting plate (1), and the fixing component (5) includes a limiting groove (501) provided on the outer wall at one end of the mounting plate (1), two limiting cards (502) are slidably connected in the limiting groove (501), and the two limiting cards (502) are symmetrically arranged, and the outer walls on the side where the two limiting cards (502) are close to each other are rotatably connected to a connecting rod (503), and the ends of the two connecting rods (503) close to each other are rotatably connected to the same connecting frame (504), and the top outer wall of the connecting frame (504) is fixedly connected to a pull rod (505), and the pull rod (505) is slidably inserted in the mounting plate (1), and the ends of the two limiting cards (502) away from each other are fixedly connected to multiple springs (506), and the multiple springs (506) on one side are respectively fixedly connected to the inner walls on both sides of the limiting groove (501).

2. The overcurrent protection device for a distribution transformer according to claim 1, characterized in that: The same protector body (3) is clamped between the two limit cards (502), and a card slot corresponding to the limit card (502) is respectively opened on the outer walls on both sides of the protector body (3), and an amplifying component (6) is installed on the top of the protector body (3).

3. The overcurrent protection device for a distribution transformer according to claim 2, characterized in that: The amplifying component (6) comprises a mounting frame (601) fixedly connected to the top outer wall of the protector body (3), and the inner walls on both sides are each provided with a second limiting groove (602), and a mounting block (603) is slidably connected in each of the two limiting grooves (602), and the two mounting blocks (603) are rotatably connected to the same convex lens (604), and the convex lens (604) can face the panel of the protector body (3).

4. The overcurrent protection device for a distribution transformer according to claim 1, characterized in that: The outer walls of the two limit cards (502) that are away from each other are slidably connected with a plurality of limit rods (507), and the plurality of limit rods (507) on one side are respectively fixedly connected to the inner walls on both sides of the limit slot 1 (501), and the plurality of limit rods (507) are respectively located inside the plurality of springs (506).

5. The overcurrent protection device for a distribution transformer according to claim 1, characterized in that: An extension block (4) is fixedly connected to one end of the top of the pull rod (505), and the diameter of the extension block (4) is greater than the diameter of the pull rod (505).

6. The overcurrent protection device for a distribution transformer according to claim 1, characterized in that: Two extension rings (2) are provided on the outer walls of both sides of the mounting plate (1), and a through hole is provided inside each of the plurality of extension rings (2).

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