Arc extinguishing structure for fireproof electrical protection device

Abstract

The utility model discloses an arc extinguishing structure used for a fireproof electrical protection device, which relates to the technical field of arc extinguishing, and comprises a mounting rack and arc extinguishing grid sheets, the mounting rack is provided with a feeding limiting rack and a fixed limiting rack, and the mounting rack is also provided with a moving structure and two groups of fixed structures. Fixing grooves are formed in the two sides of the bottom end of the arc extinguishing grid plate; the movable structure is arranged in the bottom end of the mounting frame, the two fixed structures are symmetrically arranged in the two sides of the bottom end of the mounting frame, the two fixed structures are connected with the working end of the movable structure, and each fixed structure is located in one fixed limiting frame. Compared with the mode that the arc extinguishing grid sheets need to be installed on the installation frame one by one in the prior art, the assembly between the arc extinguishing grid sheets and the installation frame can be more convenient and faster, and the assembly efficiency of the arc extinguishing cover is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to arc extinguishing technical field especially, relate to a kind of arc extinguishing structure for fireproof electrical protection device. BACKGROUND

[0002] When electrical equipment fails, such as short circuit or overload, an electric arc can occur. An electric arc is a high-temperature, high-energy plasma discharge phenomenon, with temperatures that can reach several thousand degrees Celsius. This high temperature is enough to cause the surrounding insulation materials, flammable substances (such as the insulating outer skin of electrical wires, nearby paper, wood, etc.) to instantly burn, thereby causing a fire, so the electrical equipment in the prior art will be installed with a structure for arc extinguishing, and the arc extinguishing structure with higher frequency of use is generally an arc extinguishing cover or a gas-blowing arc extinguishing structure. Compared with gas-blowing arc extinguishing, the arc extinguishing cover structure is simple and convenient to maintain or replace, so the arc extinguishing cover is more practical than the gas-blowing arc extinguishing structure.

[0003] The arc extinguishing cover in the prior art is generally composed of a mounting frame and a plurality of insulating fins installed on the mounting frame at intervals. During installation, the mounting frame and the insulating fins are assembled by means of slot insertion. This requires each insulating fin to be installed in the mounting frame one by one, and each insulating fin installed in the mounting frame needs to be inserted in the mounting frame one by one by means of slot insertion. The entire installation process is relatively cumbersome, so a kind of arc extinguishing cover structure that is easy to install needs to be designed. SUMMARY

[0004] The utility model embodiment provides a kind of arc extinguishing structure for fireproof electrical protection device to solve the problems in the background art.

[0005] The utility model discloses an arc extinguishing structure for fireproof electrical protection device, including mounting bracket and arc extinguishing grid piece, be equipped with feed limiting frame and fixed limiting frame on the mounting bracket, still be equipped with mobile structure and two groups of fixed structure on the mounting bracket, the both sides on the bottom end of arc extinguishing grid piece are equipped with fixed groove, the feed limiting frame and fixed limiting frame all are equipped with two groups, two groups feed limiting frame symmetry sets up in the both sides of mounting bracket upper end, two groups fixed limiting frame symmetry sets up in the both sides of mounting rack bottom end, and each group feed limiting frame and fixed limiting frame all are equipped with several can be installed to the clamping groove of arc extinguishing grid piece in mounting rack, and the clamping groove that each group feed limiting frame is equipped with all with the clamping groove that one group fixed limiting frame is equipped with vertically corresponds, mobile structure sets up in the bottom end of mounting rack, two groups fixed structure symmetry sets up in the both sides inside mounting rack bottom end, two groups fixed structure all with the working end of mobile structure is connected, and each group fixed structure all is located in one group fixed limiting frame, and two groups fixed structure can be fixed when arc extinguishing grid piece bottom end is located in fixed limiting frame with the fixed groove that arc extinguishing grid piece bottom end is equipped with corresponding arc extinguishing grid piece.

[0006] Further, the placing grooves are symmetrically arranged on the two sides of the bottom end of the mounting rack, the cooperation grooves are arranged in each clamping groove in the fixed limiting frame, and each placing groove is in communication with the plurality of cooperation grooves in one group of fixed limiting frames. The placing grooves and the cooperation grooves facilitate the installation of the mobile structure and the fixed structure on the mounting rack.

[0007] Further, the inner walls of the plurality of clamping grooves in each group of feed limiting frames are arc surfaces. The arc surfaces facilitate the alignment of the arc extinguishing grid piece with the clamping grooves when the arc extinguishing grid piece enters the limiting frame.

[0008] Further, the mobile structure comprises movable rods and connecting plates, the movable rods are slidingly installed in the placing grooves, two springs are symmetrically arranged on the two sides of the rod bodies of the movable rods in the placing grooves, the movable rods are connected to the fixed structures at the middle positions of the movable rods, the connecting plates are provided in two, the two ends of each connecting plate are respectively connected to one side of the movable rods outside the mounting rack, the two movable rods are synchronously moved through the two connecting plates, and a handle is arranged on each connecting plate and can be pulled by an operator. The mobile structure is used for driving the two groups of fixed structures to fix the plurality of arc extinguishing grid pieces in the fixed limiting frame.

[0009] Further, the handle is provided with anti-skid lines.

[0010] Further, each of the fixing structures comprises a connecting frame, fixing connecting plates and fixing plates, the connecting frame is located in the placing groove, one end of the connecting frame is connected to the middle position of the movable rod, and the connecting frame is located at the middle position of the two springs, the fixing connecting plates and the fixing plates are provided with a plurality of ones, each of the fixing connecting plates is located in a matching groove provided in the fixing limiting frame, one end of the plurality of fixing connecting plates is connected to the other end of the connecting frame, each of the fixing plates is provided on the other end of the fixing connecting plate, each of the fixing plates extends into a clamping groove in the matching groove, and each of the fixing plates corresponds to the fixing groove provided on the arc extinguishing grid. The two groups of fixing structures are used for fixing the arc extinguishing grid in the fixing limiting frame.

[0011] The above at least one technical scheme adopted by the embodiment of the utility model can achieve the following beneficial effects:

[0012] In the application, the mounting rack is used for placing a plurality of arc extinguishing grids, the arc extinguishing grids located in the mounting rack are limited by the two groups of feeding limiting frames and the two groups of fixing limiting frames, so that the plurality of arc extinguishing grids can be spaced apart in the mounting rack in the form of equal interval distribution, the two groups of feeding limiting frames can make the arc extinguishing grids enter the mounting rack conveniently, and the two groups of fixing limiting frames are used for cooperating with the moving structure and the fixing structure to fix the arc extinguishing grids located in the mounting rack. Compared with the mode that the arc extinguishing grids in the prior art need to be installed on the mounting rack one by one, the application can make the assembly between the arc extinguishing grids and the mounting rack more convenient and fast, and the assembly efficiency of the arc extinguishing cover is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the utility model, and the illustrative embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute improper limitation on the utility model. In the drawings:

[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0015] Figure 2 It is an assembly schematic view of the arc extinguishing grid and the mounting rack in the utility model;

[0016] Figure 3 It is an internal structure schematic view of the mounting rack in the utility model;

[0017] Figure 4 It is a disassembly and assembly schematic view of the fixing structure in the mounting rack in the utility model;

[0018] Figure 5 For the top view of the utility model Figure 1 ;

[0019] Figure 6 For the top view of the utility model Figure 2 .

[0020] The drawing reference: mounting bracket 1, feed limiting frame 11, fixed limiting frame 12, placing groove 13, matching groove 14, arc extinguishing fin 2, fixed groove 21, moving structure 3, movable rod 31, spring 33, connecting plate 32, handle 34, fixed structure 4, connecting bracket 41, fixed connecting plate 42, fixed plate 43. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantage of the utility model more clear, the following will combine the utility model specific embodiment and corresponding drawing to make the utility model technical scheme clear, complete description. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the protection scope of the utility model.

[0022] The following will combine the drawing, and the technical scheme provided by each embodiment of the utility model will be described in detail.

[0023] Referring to Figures 1-6 , the utility model embodiment provides a kind of arc extinguishing structure for fireproof electrical protection device, including mounting bracket 1 and arc extinguishing fin 2, the mounting bracket 1 is equipped with feed limiting frame 11 and fixed limiting frame 12, the mounting bracket 1 is also equipped with moving structure 3 and two groups of fixed structure 4, the bottom of arc extinguishing fin 2 both sides is equipped with fixed groove 21;The feed limiting frame 11 and fixed limiting frame 12 are equipped with two groups, two groups of the feed limiting frame 11 are symmetrically set in the both sides of upper end in mounting bracket 1, two groups of the fixed limiting frame 12 are symmetrically set in the both sides of bottom end in mounting bracket 1, each group of the feed limiting frame 11 and fixed limiting frame 12 are equipped with several card slots that can be installed into mounting bracket 1 in arc extinguishing fin 2, and the card slot equipped on each group of the feed limiting frame 11 is vertically corresponding with the card slot equipped on a group of fixed limiting frame 12;The moving structure 3 is set in the bottom end of mounting bracket 1, two groups of the fixed structure 4 are symmetrically set in the both sides inside of mounting bracket 1 bottom end, two groups of the fixed structure 4 are all connected with the working end of moving structure 3, each group of the fixed structure 4 is located in a group of fixed limiting frame 12, two groups of the fixed structure 4 can be fixed to arc extinguishing fin 2 when the bottom of arc extinguishing fin 2 is located in fixed limiting frame 12 with the fixed groove 21 equipped on the bottom of arc extinguishing fin 2 corresponding.

[0024] In the application, the mounting rack 1 is used to place a plurality of arc extinguishing grid pieces 2, the arc extinguishing grid pieces 2 in the mounting rack 1 are limited by two groups of feeding limiting racks 11 and two groups of fixed limiting racks 12, so that the plurality of arc extinguishing grid pieces 2 can be spaced in the mounting rack 1 in the form of equal interval distribution, the two groups of feeding limiting racks 11 can make the arc extinguishing grid pieces 2 enter the mounting rack 1 more conveniently, and the two groups of fixed limiting racks 12 are used to cooperate with the moving structure 3 and the fixed structure 4 to fix the arc extinguishing grid pieces 2 in the mounting rack 1, when assembling, the workers only need to put the arc extinguishing grid pieces 2 into the mounting rack 1 through the feeding limiting racks 11, because the clamping grooves provided on the feeding limiting racks 11 correspond to the clamping grooves provided on the fixed limiting racks 12, so the bottom ends of the arc extinguishing grid pieces 2 falling into the mounting rack 1 through the feeding limiting racks 11 can all fall into the fixed limiting racks 12, when the plurality of arc extinguishing grid pieces 2 are all put into the mounting rack 1, the workers can pull the moving structure 3 to drive the two groups of fixed structures 4 to move in the two groups of fixed limiting racks 12, so that the two groups of fixed structures 4 can correspond to the fixed grooves 21 provided on the arc extinguishing grid pieces 2 through the form of movement, and fix the plurality of arc extinguishing grid pieces 2 in the mounting rack 1, the fixing mode is simple and fast, compared with the mode that the arc extinguishing grid pieces 2 need to be installed on the mounting rack 1 one by one in the prior art, the application can make the assembly between the arc extinguishing grid pieces 2 and the mounting rack 1 more convenient and fast, and improve the assembly efficiency of the arc extinguishing cover.

[0025] Preferably, two sides of the bottom end of the mounting rack 1 are symmetrically provided with placing grooves 13 for placing the moving structure 3, each clamping groove in the fixed limiting rack 12 is provided with a cooperation groove 14 for placing the fixed structure 4, and each placing groove 13 is in communication with a plurality of cooperation grooves 14 provided in a group of fixed limiting racks 12.

[0026] In the application, the placing grooves 13 and the cooperation grooves 14 are used to facilitate the installation of the moving structure 3 and the fixed structure 4 on the mounting rack 1, and can make the moving structure 3 and the fixed structure 4 connected in the mounting rack 1.

[0027] Preferably, the inner walls of the plurality of clamping grooves provided on each group of feeding limiting racks 11 are arc surfaces. The feeding limiting rack 11 is mainly used for the arc extinguishing grid piece 2 to enter the mounting rack 1, and can limit the upper half of the arc extinguishing grid piece 2 at the same time, so the clamping grooves on the feeding limiting rack 11 for facilitating the arc extinguishing grid piece 2 to enter the mounting rack 1 are provided as arc surfaces, which can facilitate the arc extinguishing grid piece 2 to align with the clamping grooves when entering the limiting rack, and the arc surface can make the arc extinguishing grid piece 2 more easily enter the feeding limiting rack 11.

[0028] Preferably, the moving structure 3 comprises movable rods 31 and connecting plates 32, the movable rods 31 are slidingly installed in the placing grooves 13, two springs 33 are symmetrically arranged on both sides of the rod body of the movable rods 31 in the placing grooves 13, the middle position of the movable rods 31 is connected with the fixed structure 4, two connecting plates 32 are arranged, the two ends of each connecting plate 32 are respectively connected on one side of the two movable rods 31 located outside the mounting frame 1, the two movable rods 31 are synchronously moved through the two connecting plates 32, and a handle 34 for an operator to pull is arranged on each connecting plate 32.

[0029] In the application, each movable rod 31 is used for connecting a group of fixed structures 4, and can drive the group of fixed structures 4 to move in the fixed limiting frame 12 when the movable rod 31 moves, the spring 33 is used for resetting the movable rod 31, so that the movable rod 31 can be kept at the initial position after moving, the connecting plate 32 is used for connecting the two movable rods 31, and the handle 34 is used for the operator to pull the connecting plate 32 to move.

[0030] Preferably, the handle 34 is provided with anti-skid lines. The anti-skid lines arranged on the handle 34 can effectively reduce the phenomenon that the operator slips when pulling the handle 34.

[0031] Preferably, each group of the fixed structures 4 comprises a connecting frame 41, fixed connecting plates 42 and fixed plates 43, the connecting frame 41 is located in the placing groove 13, one end of the connecting frame 41 is connected at the middle position of the movable rod 31, and the connecting frame 41 is located at the middle position of the two springs 33, a plurality of the fixed connecting plates 42 and the fixed plates 43 are arranged, each fixed connecting plate 42 is located in one of the cooperating grooves 14 in the fixed limiting frame 12, one end of the plurality of fixed connecting plates 42 is connected on the other end of the connecting frame 41, each fixed plate 43 is arranged on the other end of the fixed connecting plate 42, each fixed plate 43 extends into one of the clamping grooves in the cooperating groove 14, and each fixed plate 43 corresponds to the fixed groove 21 arranged on the arc extinguishing fin 2.

[0032] When the arc-extinguishing grid 2 is installed into the mounting rack 1, the bottom end of the arc-extinguishing grid 2 will fall through the clamping groove of the feeding limiting rack 11 towards the clamping groove arranged on the fixing limiting rack 12, when the bottom end of the arc-extinguishing grid 2 enters the clamping groove arranged in the fixing limiting rack 12, the bottom end of the arc-extinguishing grid 2 will be located at the upper end of the fixing plate 43 in the clamping groove, the fixing plate 43 will prevent the arc-extinguishing grid 2 from falling further downwards in the clamping groove, when all the arc-extinguishing grids 2 are installed on the mounting rack 1, the staff will pull the handle 34 to drive the connecting plate 32 to move the movable rod 31 in the placing groove 13, at this time, the movable rod 31 drives the plurality of fixing connecting plates 42 and the plurality of fixing plates 43 to move in the matching groove 14 through the connecting rack 41, the fixing plate 43 after moving will move towards the inside of the matching groove 14, at this time, the fixing plate 43 will not be located in the clamping groove, so that the bottom end of the arc-extinguishing grid 2 will continue to fall downwards without the obstruction of the fixing plate 43, until the bottom end of the arc-extinguishing grid 2 contacts the bottom surface in the mounting rack 1, and at this time, the fixing groove 21 arranged on the arc-extinguishing grid 2 will be horizontally corresponding to the fixing plate 43, when the arc-extinguishing grid 2 is completely fallen, the staff will release the pulling force of the handle 34, at this time, the spring 33 arranged on the movable rod 31 will drive the movable rod 31 and the connecting rack 41 to reset, at this time, the plurality of fixing connecting plates 42 and the fixing plate 43 connected to the connecting rack 41 will move towards the side of the clamping groove arranged in the fixing limiting rack 12, so that the fixing plate 43 will be inserted into the fixing groove 21 to completely fix the arc-extinguishing grid 2.

[0033] The above merely illustrates the embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An arc extinguishing structure for a fire-rated electrical protection device, characterized by, Including mounting frame (1) and arc extinguishing grid piece (2), the mounting frame (1) is equipped with feed limiting frame (11) and fixed limiting frame (12), the mounting frame (1) is also equipped with moving structure (3) and two groups of fixed structure (4), the both sides of the bottom of arc extinguishing grid piece (2) are equipped with fixed groove (21); The feed limiting frame (11) and fixed limiting frame (12) are equipped with two groups, two groups of feed limiting frame (11) are symmetrically arranged in the both sides of the upper end of mounting frame (1), two groups of fixed limiting frame (12) are symmetrically arranged in the both sides of the bottom of mounting frame (1), and a plurality of clamping grooves for mounting arc extinguishing grid piece (2) into mounting frame (1) are arranged in each group of feed limiting frame (11) and fixed limiting frame (12), and the clamping grooves arranged on each group of feed limiting frame (11) are vertically corresponding with the clamping grooves arranged on a group of fixed limiting frame (12). The moving structure (3) is arranged in the bottom of mounting frame (1), two groups of fixed structure (4) are symmetrically arranged in the both sides of the bottom of mounting frame (1), and the working end of moving structure (3) is connected with two groups of fixed structure (4), each group of fixed structure (4) is located in a group of fixed limiting frame (12), and two groups of fixed structure (4) can correspond to the fixed groove (21) arranged on the bottom of arc extinguishing grid piece (2) to fix arc extinguishing grid piece (2) when the bottom of arc extinguishing grid piece (2) is located in fixed limiting frame (12).

2. An arc quenching structure for a fire-rated electrical protection device according to claim 1, wherein, The both sides of the bottom of mounting frame (1) are symmetrically provided with placing grooves (13) for placing moving structure (3), each clamping groove in fixed limiting frame (12) is provided with a matching groove (14) for placing fixed structure (4), and each placing groove (13) is in communication with a plurality of matching grooves (14) arranged in a group of fixed limiting frame (12).

3. An arc quenching structure for a fire rated electrical protection device according to claim 1, wherein, The inner wall of each group of clamping grooves arranged on feed limiting frame (11) is arc-shaped.

4. An arc quenching structure for a fire rated electrical protection device according to claim 2, wherein, The moving structure (3) comprises movable rods (31) and connecting plates (32), the movable rods (31) are slidably installed in the placing grooves (13), two springs (33) are symmetrically arranged on the both sides of the rod body of the movable rod (31) located in the placing groove (13), the middle position of the movable rod (31) is connected with fixed structure (4), the connecting plate (32) is provided with two, the both ends of each connecting plate (32) are respectively connected on one side of the two movable rods (31) located outside mounting frame (1), the two movable rods (31) realize synchronous movement through the two connecting plates (32), and each connecting plate (32) is provided with a handle (34) which can be pulled by an operator.

5. An arc quenching structure for a fire-rated electrical protection device according to claim 4, wherein, The handle (34) is provided with anti-skid lines.

6. An arc quenching structure for a fire rated electrical protection device according to claim 4, wherein, Each of the fixing structures (4) comprises a connecting frame (41), fixing connecting plates (42) and fixing plates (43), the connecting frame (41) is located in the placing groove (13), one end of the connecting frame (41) is connected at the middle position of the movable rod (31), and the connecting frame (41) is located at the middle position of the two springs (33), the fixing connecting plates (42) and the fixing plates (43) are provided in plurality, each of the fixing connecting plates (42) is located in one of the matching grooves (14) provided in the fixing limiting frame (12), one end of the plurality of fixing connecting plates (42) is connected on the other end of the connecting frame (41), each of the fixing plates (43) is provided on the other end of the fixing connecting plate (42), each of the fixing plates (43) extends out of one of the clamping grooves in the matching groove (14), and each of the fixing plates (43) corresponds to the fixing groove (21) provided on the arc extinguishing grid (2).

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