A new type of arc extinguishing hood

Abstract

This utility model discloses a novel arc-extinguishing hood, relating to the field of arc-extinguishing hood technology. The novel arc-extinguishing hood includes a frame and several sets of metal grids disposed inside the frame. The surface of each metal grid has grooves. It also includes: a motor housing disposed on one side of the frame, with a forward and reverse motor sleeved inside the motor housing. A pushing assembly is fixedly connected to the output end of the forward and reverse motors. The pushing assembly includes a threaded rod and a rotating sleeve. A support bar is fixedly connected to one end of the rotating sleeve, and several sets of push blocks are fixedly connected to one side of the support bar. Fixed boxes are disposed at the top and bottom of the frame. A telescopic assembly is slidably connected inside the fixed boxes. The telescopic assembly includes a sliding rod, a limiting ring, and a support spring. This utility model, through the setting of the pushing assembly, reduces the corrosion of the metal grids by carbon ash accumulation, reduces the risk of localized overheating caused by increased resistivity, and thus extends the overall service life of the arc-extinguishing hood.

Description

Technical Field

[0001] This utility model relates to the field of arc extinguishing cover technology, specifically a novel arc extinguishing cover. Background Technology

[0002] New arc-extinguishing covers are commonly used in power equipment, especially in switchgear or electrical protection devices, to effectively suppress the generation of electric arcs, prevent electric arcs from damaging equipment and threatening operators, provide more efficient protection during the operation of power equipment, reduce the potential risks of electric arcs, and improve the reliability and safety of equipment.

[0003] Utility model patent CN206134625U discloses a novel arc-extinguishing shroud, comprising an arc groove and multiple arc-shaped plates disposed within the arc groove. The arc-shaped plates have grooves with inclined bottom surfaces, and adjacent arc-shaped plates are arranged in opposite directions, resulting in staggered inclination directions of the groove bottom surfaces. This novel arc-extinguishing shroud provides multiple arc-shaped plates within the arc groove, with the bottom surfaces of the grooves on the arc-shaped plates inclined. When installing the arc-shaped plates, adjacent plates are arranged in opposite directions, resulting in staggered inclination directions of the groove bottom surfaces. This increases the contact area when the arc comes into contact with the shroud, allowing for faster cooling and extinguishing. In summary, this novel arc-extinguishing shroud effectively improves the arc-extinguishing effect.

[0004] However, existing new arc-extinguishing hoods are difficult to clean the carbon ash on the metal grids during use, which causes the carbon ash to accumulate and corrode the metal grids. At the same time, it increases the risk of local overheating caused by increased resistivity and shortens the overall service life of the arc-extinguishing hood. Utility Model Content

[0005] This invention provides a novel arc-extinguishing hood that facilitates the cleaning of carbon ash from the metal grid, thus solving the problem that existing arc-extinguishing hoods are difficult to clean during use, leading to carbon ash accumulation that corrodes the metal grid and increases the risk of localized overheating due to increased resistivity, thereby shortening the overall service life of the arc-extinguishing hood.

[0006] To facilitate the cleaning of carbon ash from metal grid plates, this utility model provides the following technical solution: A novel arc-extinguishing hood includes a frame and several sets of metal grid plates disposed inside the frame. The surface of each metal grid plate has grooves. The hood also includes: a motor housing disposed on one side of the frame, with a reversing motor fitted inside. The output end of the reversing motor is fixedly connected to a pushing assembly, which includes a threaded rod and a rotating sleeve. One end of the rotating sleeve is fixedly connected to a support bar, and one side of the support bar is fixedly connected to several sets of push blocks. Fixed boxes are disposed at the top and bottom of the frame, with a telescopic assembly slidably connected inside the fixed boxes. The telescopic assembly includes a sliding rod, a limiting ring, and a support spring. A fixed sleeve is disposed on the frame, with four sets of ball bearings slidably connected in a circular array at one end.

[0007] As a preferred embodiment of the present invention, the pushing component includes a threaded rod fixedly connected to the output end of the positive and negative motors, and a rotating sleeve is threadedly connected to one end of the threaded rod.

[0008] As a preferred embodiment of this utility model, the telescopic component includes a sliding rod slidably connected inside the fixed box, a limiting ring being sleeved on the surface of one end of the sliding rod, and a support spring being fixedly connected to one side of the limiting ring.

[0009] As a preferred embodiment of this utility model, one end of the fixing sleeve is connected to a socket, and a circuit breaker housing is fitted onto the surface of the socket.

[0010] As a preferred embodiment of this utility model, the sliding rod is slidably connected to the inside of the fixed sleeve, and the inside of the socket is provided with a groove that matches the ball bearing.

[0011] As a preferred embodiment of this utility model, two sets of cards are fixedly connected to both sides of the metal grid, and the two sides of the frame are provided with insertion holes that are compatible with the cards.

[0012] As a preferred embodiment of this utility model, one end of the sliding rod is fixedly connected to a pressing cap, and the other end of the sliding rod is provided with a groove that matches the ball bearing.

[0013] As a preferred embodiment of this utility model, a positioning ring is fixedly connected to one end of the threaded rod, and an insulating shovel plate is fixedly connected to both the top and bottom surfaces of the push block.

[0014] Compared with the prior art, the present invention provides a novel arc-extinguishing shroud, which has the following beneficial effects:

[0015] 1. This novel arc-extinguishing hood, through the setting of the pushing component, when in use, the carbon soot generated by the electric arc accumulates on the surface of the metal grid, thereby activating the forward and reverse motors. The forward and reverse motors drive the threaded rod to rotate inside the rotating sleeve, which in turn moves the rotating sleeve. At the same time, the rotating sleeve drives the support bar to move, causing the push block to slide within the interlayer of the metal grid. The insulating shovel on the push block then cleans the carbon ash on the metal grid, thereby reducing the corrosion of the metal grid caused by carbon ash accumulation, reducing the risk of local overheating caused by increased resistivity, and thus extending the overall service life of the arc-extinguishing hood.

[0016] 2. This new type of arc-extinguishing cover, through the setting of the telescopic component, allows for easy installation when the sliding rod is pressed, causing the limiting ring to compress the support spring, thereby aligning the fixing sleeve with the socket and inserting it. Releasing the sliding rod causes the support spring to generate elastic force to restore its deformation, pushing the limiting ring in the opposite direction and causing the sliding rod to slide within the fixing sleeve. The surface of one end of the sliding rod compresses the ball bearing, squeezing part of the ball bearing into the slot within the socket, thus achieving convenient installation of the arc-extinguishing cover. This simplifies the cumbersome operation of traditional bolt or threaded fixing and improves the efficiency of maintenance or replacement. Attached Figure Description

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

[0018] Figure 2 This is a schematic diagram of the circuit breaker housing and arc-extinguishing cover structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the disassembled structure of the arc-extinguishing cover of this utility model;

[0020] Figure 4 This is a schematic diagram of the telescopic component structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the driving component of this utility model.

[0022] In the diagram: 1. Frame; 2. Metal grid; 3. Motor housing; 4. Forward and reverse motor; 5. Push assembly; 501. Threaded rod; 502. Rotating sleeve; 6. Support bar; 7. Push block; 8. Fixing box; 9. Telescopic assembly; 901. Sliding rod; 902. Limiting ring; 903. Support spring; 10. Fixing sleeve; 11. Ball bearing; 12. Socket; 13. Circuit breaker housing; 14. Press cap; 15. Positioning ring; 16. Insulating shovel plate; 17. Card. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-5 This utility model discloses a novel arc-extinguishing cover, including a frame 1 and several sets of metal grids 2 disposed inside the frame 1. The surface of the metal grids 2 is provided with grooves. It also includes: a motor housing 3 disposed on one side of the frame 1, with a forward and reverse motor 4 sleeved inside the motor housing 3. The output end of the forward and reverse motor 4 is fixedly connected to a pushing assembly 5, which includes a threaded rod 501 and a rotating sleeve 502. One end of the rotating sleeve 502 is fixedly connected to a support bar 6, and one side of the support bar 6 is fixedly connected to several sets of push blocks 7; a fixed box 8 disposed at the top and bottom of the frame 1, with a telescopic assembly 9 slidably connected inside the fixed box 8. The telescopic assembly 9 includes a sliding rod 901, a limiting ring 902, and a support spring 903; and a fixed sleeve 10 disposed on the frame 1, with four sets of ball bearings 11 slidably connected in a circular array at one end of the fixed sleeve 10.

[0025] Specifically, the actuating component 5 includes a threaded rod 501 fixedly connected to the output end of the forward and reverse motor 4, and a rotating sleeve 502 is threadedly connected to one end of the threaded rod 501.

[0026] In this embodiment, the forward and reverse motor 4 is started, which drives the threaded rod 501 to rotate inside the rotating sleeve 502, thereby pushing the rotating sleeve 502 to move. At the same time, the rotating sleeve 502 drives the support bar 6 to move, so that the push block 7 slides in the interlayer of the metal grid plate 2.

[0027] Specifically, the telescopic component 9 includes a sliding rod 901 slidably connected inside the fixed box 8. A limit ring 902 is sleeved on the surface of one end of the sliding rod 901, and a support spring 903 is fixedly connected to one side of the limit ring 902.

[0028] In this embodiment, when installation is required, the sliding rod 901 is pressed, causing the limiting ring 902 to compress the support spring 903, thereby aligning the fixing sleeve 10 with the socket 12 and inserting it. The sliding rod 901 is then released, causing the support spring 903 to generate elastic force to restore its deformation, which pushes the limiting ring 902 in the opposite direction, causing the sliding rod 901 to slide within the fixing sleeve 10. The surface of one end of the sliding rod 901 is used to compress the ball bearing 11.

[0029] Specifically, a socket 12 is inserted into one end of the fixed sleeve 10, and a circuit breaker housing 13 is fitted onto the surface of the socket 12.

[0030] In this embodiment, the tool-free disassembly and assembly of the arc extinguishing cover and the circuit breaker housing 13 is achieved by the cooperation of the ball bearing 11 and the socket 12 slot, which significantly improves maintenance efficiency.

[0031] Specifically, the sliding rod 901 is slidably connected to the inside of the fixed sleeve 10, and the inside of the socket 12 is provided with a slot that matches the ball 11.

[0032] In this embodiment, the surface of one end of the sliding rod 901 is used to press the ball 11, and the ball 11 is squeezed out and inserted into the slot in the socket 12.

[0033] Specifically, two sets of cards 17 are fixedly connected to both sides of the metal grid plate 2, and the frame 1 has insertion holes on both sides that are compatible with the cards 17.

[0034] In this embodiment, the card 17 is inserted into the socket to ensure that the metal grid 2 is accurately positioned within the frame 1, thus avoiding arc offset from affecting the arc extinguishing effect.

[0035] Specifically, a pressing cap 14 is fixedly connected to one end of the sliding rod 901, and a groove adapted to the ball 11 is opened at the other end of the sliding rod 901.

[0036] In this embodiment, the pressing cap 14 facilitates pressing the sliding rod 901, and the groove facilitates the sliding rod 901 sliding during disassembly, causing the ball 11 to loosen and release the lock.

[0037] Specifically, a positioning ring 15 is fixedly connected to one end of the threaded rod 501, and an insulating shovel plate 16 is fixedly connected to both the top and bottom surfaces of the push block 7.

[0038] In this embodiment, the positioning ring 15 restricts the stroke of the threaded rod 501 to prevent it from disengaging, and the insulating shovel plate 16 uses a non-conductive material to clean the carbon ash on the grid surface to prevent secondary discharge and maintain dielectric strength.

[0039] The working principle and usage process of this utility model are as follows: During use, the carbon soot generated by the electric arc accumulates on the surface of the metal grid plate 2, thereby activating the forward and reverse motor 4. The forward and reverse motor 4 drives the threaded rod 501 to rotate within the rotating sleeve 502, thereby pushing the rotating sleeve 502 to move. At the same time, the rotating sleeve 502 drives the support bar 6 to move, causing the push block 7 to slide within the interlayer of the metal grid plate 2. The insulating shovel plate 16 on the push block 7 cleans the carbon ash on the metal grid plate 2. When installation is required, press the sliding rod 901, causing the limiting ring 902 to compress the support spring 903, thereby aligning the fixing sleeve 10 with the socket 12 and inserting it. Release the sliding rod 901, causing the support spring 903 to generate elastic force to restore its deformation, pushing the limiting ring 902 in the opposite direction and causing the sliding rod 901 to slide within the fixing sleeve 10. The surface of one end of the sliding rod 901 compresses the ball 11, squeezing out part of the ball 11 and inserting it into the slot in the socket 12.

[0040] In summary, this new type of arc extinguishing hood, through the setting of the pushing component 5, reduces the corrosion of the metal grid plate 2 by carbon ash accumulation, reduces the risk of local overheating caused by increased resistivity, and thus extends the overall service life of the arc extinguishing hood; through the setting of the telescopic component 9, it achieves the effect of convenient installation of the arc extinguishing hood, simplifies the cumbersome operation of traditional bolt or thread fixing, and improves the efficiency of maintenance or replacement.

[0041] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new arc extinguishing shield, comprising a frame (1) and a plurality of groups of metal lattices (2) arranged inside the frame (1), the surface of the metal lattices (2) is provided with grooves, characterized in that, Also includes: A motor housing (3) is set on one side of the frame (1). A forward and reverse motor (4) is sleeved inside the motor housing (3). A push assembly (5) is fixedly connected to the output end of the forward and reverse motor (4). The push assembly (5) includes a threaded rod (501) and a rotating sleeve (502). A support bar (6) is fixedly connected to one end of the rotating sleeve (502). Several sets of push blocks (7) are fixedly connected to one side of the support bar (6). Fixed boxes (8) are set at the top and bottom of the frame (1). A telescopic assembly (9) is slidably connected inside the fixed box (8). The telescopic assembly (9) includes a sliding rod (901), a limiting ring (902), and a support spring (903). A fixed sleeve (10) is provided on the frame (1), and one end of the fixed sleeve (10) is slidably connected with four sets of balls (11) in a ring array.

2. A novel arc quenching shield as claimed in claim 1, wherein: The pushing assembly (5) includes a threaded rod (501) fixedly connected to the output end of the forward and reverse motor (4), and one end of the threaded rod (501) is threadedly connected to a rotating sleeve (502).

3. A novel arc quenching shield as claimed in claim 1, wherein: The telescopic component (9) includes a sliding rod (901) slidably connected inside the fixed box (8). A limiting ring (902) is sleeved on the surface of one end of the sliding rod (901), and a support spring (903) is fixedly connected to one side of the limiting ring (902).

4. A new type of arc extinguishing cover according to claim 1, characterized in that: One end of the fixed sleeve (10) is connected to a socket (12), and a circuit breaker housing (13) is fitted onto the surface of the socket (12).

5. A novel arc quenching shield as claimed in claim 4, wherein: The sliding rod (901) is slidably connected to the inside of the fixed sleeve (10), and the inside of the socket (12) is provided with a slot that matches the ball (11).

6. A new type of arc extinguishing shield according to claim 1, characterized in that: Two sets of cards (17) are fixedly connected to both sides of the metal grid (2), and the frame (1) has insertion holes on both sides that are compatible with the cards (17).

7. A new type of arc extinguishing shield according to claim 1, characterized in that: One end of the sliding rod (901) is fixedly connected to a pressing cap (14), and the other end of the sliding rod (901) is provided with a groove that matches the ball (11).

8. A new type of arc extinguishing shield according to claim 1, characterized in that: One end of the threaded rod (501) is fixedly connected to a positioning ring (15), and the top and bottom surfaces of the push block (7) are both fixedly connected to insulating shovel plates (16).

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