Fuse type disconnecting switch

Abstract

The utility model relates to a fuse type disconnecting switch, and relates to the technical field of disconnecting switches, the fuse type disconnecting switch comprises a plurality of substrates arranged in sequence, the substrates are rotatably connected with cover plates, the substrates are provided with connecting assemblies used for connecting adjacent substrates, and the cover plates are provided with a plurality of connecting holes. Linkage assemblies used for controlling the adjacent cover plates to move synchronously are arranged in the connecting holes. One or more disconnecting switches are controlled to be synchronously opened or closed through the linkage assembly, potential safety hazards caused when the disconnecting switches are opened one by one can be effectively avoided, and meanwhile the working efficiency of operators can be improved.

Description

Technical Field

[0001] This application relates to the field of disconnecting switch technology, and in particular to a fuse-type disconnecting switch. Background Technology

[0002] A fuse-type disconnect switch is a switch that protects electrical equipment through a fuse. This disconnect switch is required to be simple and quick to open and close during use. It is usually used in power transmission and distribution systems. It makes full use of the protection characteristic curve of the fuse to protect the equipment in the power distribution line, and provides a clear disconnection point during maintenance to ensure the personal safety of the staff and protect the safety of the entire circuit.

[0003] In related technologies, fuse-type disconnect switches in a row are generally assembled by the cooperation of clips and slots. As the disconnect switches are opened one by one, the load on each individual disconnect switch increases, which increases the probability of it blowing, posing a safety hazard. Summary of the Invention

[0004] To reduce the safety hazards of opening switches one by one, this application provides a fuse-type disconnect switch.

[0005] The technical solution for a fuse-type disconnector provided in this application is as follows:

[0006] A fuse-type disconnect switch includes several bases arranged in sequence, a cover plate rotatably connected to the base, a connecting component for connecting adjacent bases on the base, several connecting holes on the cover plate, and a linkage component for controlling the synchronous movement of adjacent cover plates in the connecting holes.

[0007] By adopting the above technical solution, several adjacent bases are connected in sequence by connecting components, and several adjacent cover plates are controlled by linkage components in the connecting holes to open or close one or more cover plates synchronously. This can effectively avoid the safety hazards of opening the isolating switches one by one, and at the same time increase the work efficiency of operators.

[0008] Optionally, the connecting component includes several slots opened on one side of the base and several protrusions on the other side of the base corresponding to the positions of the slots, the protrusions being engaged into the corresponding slots in the adjacent base.

[0009] By adopting the above technical solution, several disconnect switches are sequentially engaged through the interconnection of the slot and the protrusion.

[0010] Optionally, the connecting component includes a connecting block, with connecting grooves on both sides of the base. Two connecting grooves of adjacent bases are connected. The connecting block is inserted into the two connected connecting grooves. Several connecting posts are provided on the connecting block. The sidewalls of the two connected connecting grooves are provided with a number of fixing grooves corresponding to the number of connecting posts. The connecting posts extend into the fixing grooves corresponding to their positions.

[0011] By adopting the above technical solution, the connecting block is inserted into the two side-by-side connecting slots, and then the connecting post extends into the corresponding connecting slot to connect the two side-by-side disconnecting switches in series.

[0012] Optionally, a fixing component is slidably connected inside the connecting block. The fixing component extends through the connecting block and is fixedly installed inside the connecting block with the connecting column. One end of the fixing component is provided with a return spring, and the other end of the return spring is fixedly installed with the inner wall of the connecting block.

[0013] By adopting the above technical solution, the fastener located outside the connecting block is pressed to achieve the extension and retraction of the connecting column.

[0014] Optionally, the linkage component includes a bolt with a connecting hole, one end of which is axially fitted with a nut, and the bolt is fixed to the cover plate by the nut.

[0015] By adopting the above technical solution, one or more cover plates are connected in series with bolts of different lengths to achieve synchronous movement of the cover plates.

[0016] Optionally, the linkage component includes a sliding rod disposed in the connection hole, a sliding groove is provided on the side wall of the connection hole of the cover plate, and a control rod is provided on the sliding rod that passes through the sliding groove. The control rod slides along the sliding groove and pushes the sliding rod into the connection hole in the adjacent cover plate.

[0017] By adopting the above technical solution, the sliding rod can be moved in a planned manner within the connection hole to drive the synchronous movement of one or more disconnecting switches, which can effectively improve the flexibility of opening or closing the disconnecting switches after they are connected in a row.

[0018] Optionally, the cover plate has a locking groove on the side wall of the connection hole. The locking groove is connected to the sliding groove, and the control rod slides along the locking groove and abuts against the inner wall of the locking groove.

[0019] By adopting the above technical solution, the control rod can be prevented from falling out of the adjacent connection hole when multiple disconnect switches are opened or closed by abutting against the inner wall of the locking groove.

[0020] Optionally, the cover plate is provided with a glass surface for observing the inside of the cover plate.

[0021] By adopting the above technical solution, the operation of the fuse inside the disconnecting switch can be observed from the outside, allowing for targeted operation of one of the disconnecting switches, effectively reducing the workload of personnel. In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. By controlling one or more disconnect switches to open or close synchronously through linkage components, the safety hazards of opening disconnect switches one by one can be effectively avoided;

[0023] 2. By flexibly activating one or more disconnect switches, the work efficiency of operators can be effectively improved. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0025] Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of this application, mainly showing the card slot and card protrusion;

[0026] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this application, mainly showing the connecting groove;

[0027] Figure 4 yes Figure 3 A partial cross-sectional view of the structure along plane AA.

[0028] Figure 5 This is a schematic diagram of the overall structure of Embodiment 2 of this application, mainly showing the cover plate.

[0029] Figure Descriptions: 1. Base; 2. Cover plate; 3. Connecting assembly; 301. Snap protrusion; 302. Snap groove; 303. Connecting groove; 304. Connecting block; 305. Fixing element; 306. Return spring; 307. Connecting column; 308. Pressing block; 4. Connecting hole; 5. Linkage assembly; 501. Bolt; 502. Nut; 503. Sliding rod; 504. Control rod; 6. Bolt groove; 7. Nut groove; 8. Glass surface; 9. Mounting cavity; 10. Pressing groove; 11. Sliding groove; 12. Locking groove. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0031] Example 1:

[0032] A fuse-type disconnect switch, as described above Figure 1 It includes two bases 1 arranged in sequence, with a cover plate 2 rotatably connected to the base 1. A connecting component 3 for connecting adjacent bases 1 is provided on the base 1. Both ends of the cover plate 2 are provided with connecting holes 4, and a linkage component 5 for controlling the synchronous movement of adjacent cover plates 2 is provided in the two connecting holes 4.

[0033] Reference Figure 1 , Figure 2The connecting component 3 includes two latching protrusions 301 fixedly connected to the sidewall of the base 1, with the two latching protrusions 301 arranged vertically on one side of the base 1. Two latching grooves 302 are formed on the sidewall of the base 1 opposite to the latching protrusions 301, corresponding to the positions of the two latching protrusions 301. The latching protrusions 301 and latching grooves 302 are respectively arranged in the shape of dovetail blocks and dovetail grooves. After the two bases 1 are connected, the latching protrusion 301 of one base 1 engages with the corresponding latching groove 302 of the adjacent base 1.

[0034] The connecting holes 4 on two adjacent bases 1 are arranged and connected. The linkage assembly 5 includes bolts 501 that pass through the two connecting holes 4. The thread of the bolt 501 extends into the connecting hole 4, and a bolt groove 6 is provided at one end of the connecting hole 4. The head of the bolt 501 extends into the bolt groove 6. A nut 502 is threadedly connected to the end of the bolt 501, and a nut groove 7 is provided at the other end of the connecting hole 4. The nut 502 extends into the nut groove 7.

[0035] Reference Figure 1 A window for observing the interior of the cover plate 2 is provided on the side away from the base 1, and a glass surface 8 is fixedly connected to the side wall of the window.

[0036] The implementation principle of this application embodiment is as follows: two adjacent bases 1 are engaged by a latching protrusion 301 and a latching groove 302. In addition, two adjacent cover plates 2 are inserted into corresponding bolt grooves 6 by bolts 501, and bolts 501 of different lengths are used to control the movement of two or more cover plates 2 together.

[0037] Example 2:

[0038] A fuse-type disconnect switch, as described above Figure 3 The difference from Embodiment 1 is that connecting grooves 303 are provided on both sides of the base 1, and the positions of the connecting grooves 303 on both sides correspond. The openings of the connecting grooves 303 are opened away from the cover plate 2. After adjacent bases 1 are arranged, the two corresponding connecting grooves 303 belonging to different bases 1 are connected.

[0039] Reference Figure 3 , Figure 4 A connecting block 304 is installed in the connecting groove 303. An installation cavity 9 is opened in the connecting block 304. A fixing member 305 is slidably connected in the installation cavity 9. One end of a return spring 306 is fixedly connected to both ends of the fixing member 305. The other ends of the two return springs 306 are fixedly connected to the inner wall of the installation cavity 9.

[0040] The middle section of the fixing member 305 protrudes away from the return spring 306 to form a pressing block 308. The connecting block 304 has a through hole for the pressing block 308 to pass through, and the side wall of the connecting groove 303 has a pressing groove 10 for placing the pressing block 308.

[0041] Reference Figure 4 On one side of the fixing member 305 close to the return spring 306, two connecting columns 307 are fixedly connected, and a connecting groove 303 is formed on the side wall of each connecting groove 303. The connecting column 307 penetrates through the side wall of the connecting block 304 and extends into the corresponding connecting groove 303.

[0042] Reference Figure 3 、 Figure 5 The linkage assembly 5 includes a sliding rod 503 slidably connected in the connecting hole 4. A control rod 504 is fixedly connected to the sliding rod 503. The cover plate 2 is provided with a sliding groove 11 on the side wall of the connecting hole 4. The control rod 504 penetrates through the sliding groove 11 and slides along the sliding groove 11, so that the sliding rod 503 gradually inserts into the connecting hole 4 of the adjacent cover plate 2, thereby realizing the synchronous movement of the two cover plates 2.

[0043] A locking groove 12 is formed on the cover plate 2 on the side wall of the connecting hole 4. The locking groove 12 is formed in a "C" shape. One end of the locking groove 12 is communicated with the sliding groove 11. After the control rod 504 slides to the end along the locking groove 12, it is clamped with the inner wall of the locking groove 12.

[0044] The implementation principle of the embodiment of the present application is as follows: When connecting the connection base 1, the connecting block 304 is snapped into the connecting groove 303 after the combination of the two bases 1. During the installation of the connecting block 304, the operator holds the connecting block 304 and presses the pressing block 308 protruding from the connecting block 304. After the connecting block 304 is installed in place, the pressing block 308 is released, so that the return spring 306 contracts, allowing the connecting column 307 to extend into the corresponding connecting groove 303. When it is necessary to open the cover plate 2 to disconnect the circuit, according to the number of cover plates 2 to be opened or closed, the appropriate number of sliding rods 503 can be controlled to extend into the connecting holes 4 of the adjacent cover plates 2.

[0045] The embodiments of the present specific implementation manner are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A fuse-type disconnect switch, comprising a plurality of substrates (1) arranged in sequence, wherein a cover plate (2) is rotatably connected to the substrates (1), characterized in that: The base (1) is provided with a connecting component (3) for connecting adjacent bases (1), and the cover plate (2) is provided with a plurality of connecting holes (4), and the connecting holes (4) are provided with a linkage component (5) for connecting a plurality of cover plates (2) in series.

2. The fuse-type disconnect switch according to claim 1, characterized in that: The connecting component (3) includes a plurality of slots (302) opened on one side of the base (1), and a plurality of protrusions (301) corresponding to the positions of the slots (302) are provided on the other side of the base (1). The protrusions (301) extend into the slots (302) in the adjacent base (1).

3. A fuse-type disconnect switch according to claim 1, characterized in that: The connecting component (3) includes a connecting block (304). Connecting grooves (303) are provided on both sides of the base (1). The two connecting grooves (303) of the adjacent base (1) are connected. The connecting block (304) extends into the two connected connecting grooves (303). A plurality of connecting posts (307) are slidably connected on the connecting block (304). The sidewalls of the two connected connecting grooves (303) are provided with a number of fixing grooves corresponding to the number of connecting posts (307). The connecting posts (307) extend into the fixing grooves corresponding to their positions.

4. A fuse-type disconnect switch according to claim 3, characterized in that: A fixing member (305) is slidably connected inside the connecting block (304). The fixing member (305) partially penetrates the connecting block (304). The fixing member (305) is fixedly installed with the connecting column (307). One end of the fixing member (305) is provided with a return spring (306). The other end of the return spring (306) is fixedly installed with the inner wall of the connecting block (304).

5. A fuse-type disconnect switch according to claim 1, characterized in that: The linkage component (5) includes a bolt (501) passing through the connecting hole (4), and a nut (502) is axially sleeved on one end of the bolt (501). The bolt (501) is fixed to the cover plate (2) by the nut (502).

6. A fuse-type disconnect switch according to claim 1, characterized in that: The linkage component (5) includes a sliding rod (503) disposed in the connection hole (4). The cover plate (2) has a sliding groove (11) on the side wall of the connection hole (4). A control rod (504) is disposed on the sliding rod (503) and passes through the sliding groove (11). The control rod (504) slides along the sliding groove (11) and pushes the sliding rod (503) into the connection hole (4) in the adjacent cover plate (2).

7. A fuse-type disconnect switch according to claim 6, characterized in that: The cover plate (2) has a locking groove (12) on the side wall of the connecting hole (4). The locking groove (12) is connected to the sliding groove (11). The control rod (504) slides along the locking groove (12) and abuts against the inner wall of the locking groove (12).

8. A fuse-type disconnector according to claim 1, characterized in that: The cover plate (2) is provided with a glass surface (8) for observing the inside of the cover plate (2).

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