Mounting plate of fuse

Abstract

The utility model relates to a fuse mounting plate, and relates to the technical field of fuses, the fuse mounting plate comprises a fixing part and a connection part fixedly connected with one end of the fixing part, a plurality of connection blocks are fixedly arranged on the side face, away from the fixing part, of the connection part in the linear direction, the number of the connection blocks is not less than three, and adjacent connection blocks are fixedly connected. The sectional dimensions of the multiple connecting blocks are gradually increased in the direction away from the connecting part. According to the invention, the sectional dimensions of the joining blocks are gradually increased along the direction far away from the joining part, and the number of the joining blocks is not less than three, so that the surface area of the part, inserted into the groove body on the insulator, of the mounting plate is increased, the bonding area of the adhesive and the corresponding part is increased, the connection strength of the insulator and the mounting plate is improved, and the requirements of the state grid are met.

Description

Technical Field

[0001] The present application relates to the technical field of fuses, and in particular to a mounting plate for a fuse. Background Art

[0002] Dropout fuses are safety switching devices widely used in 10kV distribution lines and distribution transformers, providing short-circuit protection. They disconnect circuits in the event of an overload or short circuit, preventing dangerous situations such as excessive current that could damage equipment or cause fire. Installed on distribution lines, dropout fuses can minimize power outages. Their clear disconnection point and the ability to function as an isolating switch create a safe working environment for maintaining sections of line and equipment.

[0003] However, existing technologies, such as the drop-out fuse with publication number CN105957785A, utilize ceramic or composite insulators as the insulating medium and utilize a perforated plate embedded in the insulator for mounting and fixing. However, these solutions present several problems in practical applications. Specifically, this mounting method relies on a punch-pressed, grooved plate that mates with the insulator's slots, which are then secured with adhesive.

[0004] The State Grid Corporation of China has a clear pull-out force requirement for inserts in this type of equipment: no less than 24.5kN. However, due to the limited depth of the grooves, the connection strength between the perforated plate and the insulator is insufficient. Even relatively small external forces applied to the perforated plate can cause it to fall from the insulator. Existing installation methods clearly fail to meet this standard. In practice, if a drop-out fuse were to fall from a utility pole due to insufficient connection strength, it could not only cause a power outage but also pose a threat to pedestrians or objects below, significantly compromising safety performance and leaving room for improvement. Utility Model Content

[0005] The purpose of this application is to provide a mounting plate for a fuse, so as to solve the problem in the above-mentioned related technologies that the connection strength between the perforated plate and the insulator is insufficient, cannot meet the requirements of the State Grid, and has potential safety hazards.

[0006] The present application provides a fuse mounting plate that adopts the following technical solution:

[0007] A mounting plate for a fuse comprises a fixing portion and a connecting portion fixedly connected to one end of the fixing portion. A plurality of connecting blocks are fixedly provided on a side of the connecting portion away from the fixing portion in a straight line direction. The number of the connecting blocks is not less than three, and adjacent connecting blocks are fixedly connected. The cross-sectional dimensions of the plurality of connecting blocks increase in a direction away from the connecting portion.

[0008] By adopting the technical scheme, when the mounting plate is applied, the connecting part and the connecting blocks of the mounting plate are inserted into the groove on the insulator, then the adhesive is filled between the adjacent connecting blocks, the adhesive is attached to the outer surfaces of the filling blocks, the connecting blocks and the connecting part, and the fixing of the mounting plate and the insulator is realized after the adhesive solidifies; since the cross-sectional dimensions of the connecting blocks increase in the direction away from the connecting part, and the number of the connecting blocks is not less than three, the surface area of the mounting plate inserted into the groove part of the insulator is increased, the area of the adhesive attached to the corresponding part is more, and then the connection strength of the insulator and the mounting plate is improved, so as to meet the demand of the State Grid.

[0009] Optionally, the outer circumferential surface of the connecting block is an arc surface, and the cross-sectional shape of the connecting block and the fixed part is circular.

[0010] By adopting the technical scheme, the design of the arc surface reduces the friction and resistance with the inner wall of the groove when the connecting block is inserted into the groove of the insulator, so that the installation process is smoother, and the installation difficulty is reduced; and the circular cross-section and the arc surface design are helpful to disperse stress and reduce the stress concentration phenomenon that may occur in the installation or use process, thereby prolonging the service life of the mounting plate and the insulator.

[0011] Optionally, the outer diameter dimension of the largest part of the connecting block is greater than the outer diameter dimension of the connecting part.

[0012] By adopting the technical scheme, when an external force tries to pull the mounting plate out of the insulator, since the outer diameter of the connecting block is larger, it will provide greater resistance, which helps to prevent the mounting plate from accidentally falling off due to the action of the external force, and ensures the reliability and safety of the fuse connection.

[0013] Optionally, the filling block is symmetrically and fixedly arranged between the two adjacent connecting blocks.

[0014] By adopting the technical scheme, when the adhesive is filled between the connecting blocks, the filling blocks and the connecting part, the filling blocks provide an additional attachment surface for the adhesive, and increase the contact area between the adhesive and the mounting plate; this helps to improve the connection strength between the adhesive and the mounting plate, and ensures the firm connection between the mounting plate and the insulator; the design of the filling block makes the mounting plate easier to align and position during installation, reduces the installation difficulty and complexity, and at the same time, the filling block can also be used as a reference point during installation, helping the maintenance personnel to quickly and accurately complete the installation work.

[0015] Optionally, the outer edge of the side surface of the connecting block away from the connecting part is a guide arc surface.

[0016] By adopting the above technical solution, the design of the guide arc surface enables the adapter block to more smoothly guide the installation plate into the correct position during insertion into the insulator groove body. This design reduces the risk of installation difficulties and damage caused by improper or misaligned installation, improving installation efficiency and accuracy. The guide arc surface can smoothly transition the contact surface between the installation plate and the insulator groove body, reducing friction and damage caused by sharp edges or right angles. This not only helps to protect the surface of the installation plate and the insulator, but also prolongs their service life.

[0017] Optionally, a waist-shaped through hole and a fixing through hole are formed on the fixing part.

[0018] By adopting the above technical solution, the design of the waist-shaped through hole and the fixing through hole enables the installation plate to adapt to different installation requirements and environmental conditions. For example, different sizes of bolts or fasteners can be selected for connection according to actual needs, or the position and angle of the installation plate can be adjusted as needed. This simplifies the installation process, enabling the installation plate to be installed in place more quickly. This helps to improve installation efficiency and reduce installation costs.

[0019] Optionally, a transition arc surface is provided at the junction of the adapter part and the fixing part.

[0020] By adopting the above technical solution, the design of the transition arc surface can reduce stress concentration between the adapter part and the fixing part, making the structure more robust and durable. This design helps to prevent deformation or damage caused by external forces during installation or use, improving the overall stability of the installation plate; the transition arc surface can more evenly distribute stress from the adapter part and the fixing part, reducing fatigue failure caused by stress concentration. This design helps to prolong the service life of the installation plate and reduce maintenance costs caused by structural problems.

[0021] Optionally, the cross-sectional width of the fixing part decreases in the direction approaching the adapter part.

[0022] By adopting the above technical solution, the decreasing cross-sectional width of the fixing part helps to more evenly distribute the stress received by the installation plate during use. This design can reduce the risk of structural damage caused by stress concentration, improving the overall stability and durability of the installation plate; the decreasing cross-sectional width makes it easier for the fixing part to interface and fix with the insulator or other support structure during installation. This design simplifies the installation steps, reduces the difficulty of installation, and improves installation efficiency.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. In the application of the mounting plate, the engaging part and the engaging blocks of the mounting plate are inserted into the groove on the insulator, then the adhesive is filled between the adjacent engaging blocks, the adhesive is in contact with the outer surface of the filling block, the engaging block and the engaging part, and the fixing of the mounting plate and the insulator is realized after the adhesive solidifies;

[0025] Since the cross-sectional size of the engaging block increases in the direction away from the engaging part, and the number of engaging blocks is not less than three, the surface area of the mounting plate inserted into the groove part of the insulator is increased, the area of the adhesive in contact with the corresponding part is more, and the connection strength of the insulator and the mounting plate is improved, which meets the demand of the State Grid. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0028] Figure 2 is a schematic diagram of the cross-sectional structure of the embodiment of the present application;

[0029] Figure 3 is a schematic diagram of the structure of the embodiment of the present application showing the distribution of the fixed through hole and the waist-shaped through hole.

[0030] In the figure, 1 is a fixed part; 11 is a fixed through hole; 12 is a waist-shaped through hole; 2 is an engaging part; 21 is a transition arc surface; 3 is an engaging block; 31 is a guide arc surface; 4 is a filling block. DETAILED DESCRIPTION

[0031] The present application will be further described in detail below in combination with all the drawings.

[0032] Embodiment:

[0033] Reference Figure 1 and Figure 2 A mounting plate of a fuse, comprising a fixed part 1, an engaging part 2 fixedly connected with one end of the fixed part 1, three engaging blocks 3 fixedly arranged on the side of the engaging part 2 away from the fixed part 1 in a linear direction, adjacent engaging blocks 3 are fixedly connected, and the cross-sectional size of the three engaging blocks 3 increases in the direction away from the engaging part 2, the fixed part 1, the engaging part 2 and the engaging blocks 3 are integrally processed and formed;

[0034] In the application of the mounting plate, the connecting part 2 and the three connecting blocks 3 of the mounting plate are inserted into the groove on the insulator, the adhesive is filled between the adjacent connecting blocks 3, and the fixing of the mounting plate and the insulator is realized after the adhesive solidifies.

[0035] With reference to Figure 2 The outer circumferential surface of the connecting block 3 is arc-shaped, the cross-sectional shape of the connecting block 3 and the fixing part 1 is circular, the outer diameter of the connecting block 3 at the largest position is larger than the outer diameter of the connecting part 2, and the connecting block 3 is prevented from being pulled out of the groove on the insulator after the adhesive solidifies.

[0036] The outer edge of the side surface of the connecting block 3 away from the connecting part 2 is a guide arc surface 31, the connecting block 3 is inserted into the groove on the insulator along the guide arc surface 31, and the adhesive is more closely attached to the outer surface of the connecting block 3.

[0037] With reference to Figure 3 The filling block 4 is symmetrically and fixedly arranged between the two adjacent connecting blocks 3, the filling block 4 and the connecting block 3 are integrally formed, the connecting block 3 and the filling block 4 are simultaneously formed by a punch, and the structural stability between the adjacent connecting blocks 3 is improved due to the arrangement of the filling block 4.

[0038] With reference to Figure 2 and Figure 3 The transition arc surface 21 is arranged at the connecting position of the connecting part 2 and the fixing part 1, and the cross-sectional width of the fixing part 1 decreases along the direction close to the connecting part 2, so as to reduce the possibility of stress concentration at the connecting position of the connecting part 2 and the fixing part 1 and to enhance the structural strength of the connecting position of the connecting part 2 and the fixing part 1.

[0039] With reference to Figure 3 The waist-shaped through hole 12 and the fixing through hole 11 are arranged on the fixing part 1, and the drop-out fuse can be fixed on the electric pole or other positions by the staff through the bolts in different ways (inserted into the waist-shaped through hole 12 or the fixing through hole 11).

[0040] The implementation principle of the embodiment of the application is as follows:

[0041] In the application of the mounting plate, the connecting part 2 and the three connecting blocks 3 of the mounting plate are inserted into the groove on the insulator, the adhesive is filled between the adjacent connecting blocks 3, and the fixing of the mounting plate and the insulator is realized after the adhesive solidifies.

[0042] Unless otherwise defined, the terms used in the present application shall be understood as follows: the terms used in the present application should be understood as having the meanings commonly used by those skilled in the art to which the present application pertains, unless otherwise defined. The terms "first", "second", "third" and the like used in the present application do not indicate any order, number or importance, but are used to distinguish different components. The terms "one" or "a" and the like do not indicate a quantity limitation, but indicate that there is at least one. The terms "include" or "contain" and the like mean that the elements or objects before the "include" or "contain" cover the elements or objects listed after the "include" or "contain" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are used to represent relative positional relationships, which may change accordingly when the absolute positions of the described objects change.

[0043] The embodiments of the present specific implementation are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are indicated by the same reference numerals. Therefore, any equivalent changes made in the structure, shape, principle of the present application should be covered by the protection scope of the present application.

Claims

1. A mounting plate of a fuse comprising a fixed part (1) and a connecting part (2) fixedly connected to one end of the fixed part (1), characterized in that, The adapter (2) is provided with a plurality of adapter blocks (3) on the side away from the fixing part (1) in a linear direction, the number of the adapter blocks (3) is not less than three, adjacent adapter blocks (3) are fixedly connected, and the cross-sectional dimensions of the plurality of adapter blocks (3) are increased in the direction away from the adapter (2).

2. A mounting plate for a fuse according to claim 1, wherein The outer circumferential surface of the adapter block (3) is an arc surface, and the cross-sectional shapes of the adapter block (3) and the fixing part (1) are both circular.

3. A mounting plate for a fuse according to claim 2, wherein The outer diameter dimension of the adapter block (3) at the maximum position is greater than the outer diameter dimension of the adapter (2).

4. The mounting plate for a fuse of claim 1, wherein, A filling block (4) is symmetrically and fixedly arranged between the two adjacent adapter blocks (3).

5. The mounting plate for a fuse of claim 1, wherein, The outer edge of the side surface of the adapter block (3) away from the adapter (2) is a guide arc surface (31).

6. The mounting plate for a fuse of claim 1, wherein, The fixing part (1) is provided with a waist-shaped through hole (12) and a fixing through hole (11).

7. The mounting plate for a fuse of claim 1, wherein, The adapter (2) and the fixing part (1) are provided with a transition arc surface (21) at the adapter position.

8. A mounting plate for a fuse according to claim 7, wherein The cross-sectional width of the fixing part (1) is decreased in the direction close to the adapter (2).

Images