Fuse handcart and switch cabinet

Abstract

The utility model belongs to the technical field of switch cabinets, and discloses a fuse handcart and a switch cabinet. The fuse handcart comprises a box body, wherein a first insulator, a lightning arrester, a second insulator and a discharge counter are sequentially arranged on the box body from top to bottom at intervals; the first insulator is provided with a first contact arm, the second insulator is provided with a second contact arm, a fuse is arranged between the first contact arm and the second contact arm, one end of the lightning arrester is connected with the first contact arm, and the other end of the lightning arrester is conductively connected with the discharge counter. When the fuse handcart is designed, the first insulator and the second insulator are arranged at intervals and installed at corresponding positions of the box body, the lightning arrester is installed between the first insulator and the second insulator, and the discharge counter is arranged at a position, close to the bottom, of the box body. According to the fuse handcart, the mode that a box body is directly heightened at the top and a lightning arrester and a discharge counter are arranged at the top in the prior art is replaced, the overall fuse handcart box body is prevented from being too high, the structure is simple, arrangement is compact, and cost can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a switchgear technical field especially relates to a fuse handcart and switch cabinet. BACKGROUND

[0002] The fuse handcart is widely used in various power systems, and plays an important role especially in the test of voltage transformer and the replacement of fuse. The fuse handcart can quickly and accurately test the voltage transformer, ensuring the normal operation of the equipment.

[0003] In the prior art, in order to protect the power equipment and personal safety, it is necessary to install a lightning arrester and a discharge counter. Because the discharge counter is large in size, it can only be installed on the fuse handcart and other positions in the switch cabinet. Or the height of the handcart box body is increased, and the lightning arrester and the discharge counter are installed on the top of the increased fuse handcart box body, resulting in that the overall height of the box body is too large and the cost is too high.

[0004] Therefore, it is urgent to provide a fuse handcart and switch cabinet which can install a lightning arrester and a discharge counter, and can be reasonably arranged to prevent the overall height of the box body of the fuse handcart from being too large and the cost from being too high. SUMMARY

[0005] The utility model discloses a fuse handcart and switch cabinet which can install a lightning arrester and a discharge counter, and can be reasonably arranged to prevent the overall height of the box body of the fuse handcart from being too large and the cost from being too high.

[0006] To achieve this purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a kind of fuse handcart, which comprises a box body, the box body is sequentially and interval arranged with first insulator, lightning arrester, second insulator and discharge counter from top to bottom, first contact arm is equipped on the first insulator, second contact arm is equipped on the second insulator, fuse is equipped between the first contact arm and the second contact arm, one end of the lightning arrester is connected to the first contact arm, the other end of the lightning arrester is connected to the discharge counter.

[0008] As an optional technical scheme of a fuse handcart, it further comprises a first copper bar and a second copper bar, the top end of the fuse is connected to the first contact arm through the first copper bar, the bottom end of the fuse is connected to the second contact arm through the second copper bar, and the lightning arrester is connected to the first contact arm through the first copper bar.

[0009] As an optional technical solution for a fuse trolley, it also includes an insulating plate, a first support frame and a second support frame. The insulating plate is fixed on the first support frame and the second support frame. The first support frame is fixed on the first insulator and the second support frame is fixed on the second insulator. The first contact arm and the second contact arm are both fixed on the insulating plate.

[0010] As an optional technical solution for a fuse trolley, both the first support frame and the second support frame are U-shaped, and / or both the first support frame and the second support frame are made of iron.

[0011] As an optional technical solution for a fuse-operated handcart, the first insulator, the surge arrester, and the second insulator all extend in the same direction, with the surge arrester positioned in the housing near the first insulator.

[0012] As an optional technical solution for fuse trolleys, a first insulating cover is provided at the connection between the first contact arm and the first insulator, and a second insulating cover is provided at the connection between the second contact arm and the second insulator.

[0013] As an optional technical solution for a fuse truck, the housing includes a base and a bracket, which are detachably assembled and connected by a first fastener. The first insulator, the surge arrester, the second insulator, and the discharge counter are all mounted on the bracket.

[0014] As an optional technical solution for a fuse truck, the bracket is provided with a first bracket and a second bracket. Both the first bracket and the second bracket are detachably fixed to the bracket by a second fastener. The surge arrester is fixed on the first bracket, and the discharge counter is fixed on the second bracket.

[0015] This utility model provides a switch cabinet, including the aforementioned fuse trolley.

[0016] As an optional technical solution for a switchgear, the switchgear is provided with a grounding structure, the grounding structure includes a duckbill grounding contact, and the surge arrester is provided with a grounding wire and connected to the duckbill grounding contact through the grounding wire.

[0017] Beneficial effects:

[0018] This utility model provides a fuse cart, which includes a housing. From top to bottom, the housing is arranged with a first insulator, a surge arrester, a second insulator, and a discharge counter at intervals. The first insulator has a first contact arm, and the second insulator has a second contact arm. A fuse is positioned between the first and second contact arms. One end of the surge arrester is connected to the first contact arm, and the other end is conductively connected to the discharge counter. In the design of the fuse cart, by arranging and installing the first and second insulators at intervals in corresponding positions within the housing, and then installing the surge arrester between the first and second insulators, and placing the discharge counter near the bottom of the housing, this design replaces the existing method of directly raising the housing from the top and installing the surge arrester and discharge counter on top. This avoids an excessively tall overall fuse cart housing, resulting in a simple and compact structure that effectively reduces costs.

[0019] This utility model provides a switch cabinet, which includes the aforementioned fuse trolley. By setting up the fuse trolley, the device layout is optimized and space is effectively utilized under the condition of setting up surge arresters and discharge counters, which helps to control the overall size of the fuse trolley. Attached Figure Description

[0020] Figure 1 This is a first-view structural schematic diagram of the fuse trolley provided in an embodiment of the present invention;

[0021] Figure 2 This is a second-view structural schematic diagram of the fuse trolley provided in an embodiment of the present invention;

[0022] Figure 3 This is a third-view structural schematic diagram of the fuse trolley provided in an embodiment of the present invention;

[0023] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0024] Figure 5 This is a structural schematic diagram of the first copper busbar from a first-view perspective provided in an embodiment of this utility model;

[0025] Figure 6 This is a structural schematic diagram of the first copper busbar from a second perspective provided in an embodiment of this utility model.

[0026] In the picture:

[0027] 10. Box body; 11. Base; 12. Bracket; 121. First bracket; 122. Second bracket; 123. Panel;

[0028] 21. First insulator; 22. Second insulator; 23. Surge arrester; 24. Discharge counter; 25. Fuse;

[0029] 31. First tentacle; 32. Second tentacle;

[0030] 41. First copper busbar; 411. First through hole; 412. Second through hole; 413. Third through hole;

[0031] 51. Insulating board; 52. First support frame; 53. Second support frame;

[0032] 61. First insulating cover; 62. Second insulating cover. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] like Figures 1 to 6As shown, this embodiment provides a fuse cart and a switch cabinet. The switch cabinet includes a fuse cart, which includes a housing 10. The housing 10 is provided with a first insulator 21, a surge arrester 23, a second insulator 22, and a discharge counter 24 arranged sequentially from top to bottom. The first insulator 21 is provided with a first contact arm 31, and the second insulator 22 is provided with a second contact arm 32. A fuse 25 is provided between the first contact arm 31 and the second contact arm 32. One end of the surge arrester 23 is connected to the first contact arm 31, and the other end of the surge arrester 23 is connected to the discharge counter 24.

[0038] In the design of the fuse truck, the first insulator 21 and the second insulator 22 are arranged and installed at corresponding positions in the enclosure 10. Next, the surge arrester 23 is installed between the first insulator 21 and the second insulator 22, and the discharge counter 24 is set near the bottom of the enclosure 10. This replaces the existing method of directly raising the enclosure 10 from the top and setting the surge arrester 23 and the discharge counter 24 on the top of the enclosure 10. This optimizes the device layout, effectively utilizes space, helps control the overall size of the fuse truck, avoids the fuse truck enclosure 10 from being too tall, and has a simple and compact structure, which can effectively reduce costs.

[0039] Specifically, the housing 10 includes a base 11 and a bracket 12. The base 11 and the bracket 12 are detachably assembled and connected by a first fastener. The first insulator 21, the surge arrester 23, the second insulator 22, and the discharge counter 24 are all mounted on the bracket 12.

[0040] Traditional enclosures are welded enclosures with numerous welds. If sheet metal errors are not detected before welding, the entire enclosure will be scrapped. When different projects have different size requirements, the enclosure needs to be redesigned, sheet metal parts need to be remade and welded, making it impossible to achieve universality.

[0041] In this embodiment, the base 11 and the bracket 12 are assembled using a first fastener, allowing the base 11 and the bracket 12 to be processed independently, replacing the existing manual arc welding method. This enables the base 11 and the bracket 12 to achieve universal modularity. If there are abnormalities in the sheet metal, production can continue by replacing the corresponding module, which can significantly reduce costs. In this embodiment, the base 11 extends laterally, the bracket 12 extends vertically, and the base 11 is equipped with wheels at its bottom.

[0042] Optionally, the first insulator 21, the surge arrester 23, and the second insulator 22 all extend in the same direction, with the surge arrester 23 positioned in the enclosure 10 near the first insulator 21. By positioning the surge arrester 23 close to the first insulator 21, a safe distance can be ensured, and the overall height of the enclosure 10 can be controlled as much as possible.

[0043] Furthermore, the bracket 12 is provided with a first bracket 121 and a second bracket 122. Both the first bracket 121 and the second bracket 122 are detachably fixed to the bracket 12 by a second fastener. The surge arrester 23 is fixed to the first bracket 121, and the discharge counter 24 is fixed to the second bracket 122. By providing detachable first bracket 121 and second bracket 122 on the bracket 12, the first bracket 121 and the second bracket 122 can be adapted to fuse trucks of different sizes, and also facilitate the maintenance and replacement of the first bracket 121 and the second bracket 122.

[0044] In this embodiment, both the first and second fasteners are bolts; the bracket 12 is also provided with a panel 123, which is located on the side of the bracket 12 away from the surge arrester 23; the dial of the discharge counter 24 is exposed at the opening of the panel 123; the bracket 12 is assembled by bolts from the left side plate, the right side plate and the interlocking bent plate, and the first bracket 121, the second bracket 122 and the panel 123 are assembled by bolts at the corresponding positions of the bracket 12.

[0045] Furthermore, the fuse trolley also includes a first copper busbar 41 and a second copper busbar. The top of the fuse 25 is connected to the first contact arm 31 via the first copper busbar 41, and the bottom of the fuse 25 is connected to the second contact arm 32 via the second copper busbar. The surge arrester 23 is connected to the first contact arm 31 via the first copper busbar 41. By setting the first copper busbar 41 and the second copper busbar, the top and bottom of the fuse 25 can be directly fixed to the corresponding positions of the first copper busbar 41 and the second copper busbar, without the need for additional parts to fix the fuse 25.

[0046] Furthermore, the fuse trolley also includes an insulating plate 51, a first support frame 52, and a second support frame 53. The insulating plate 51 is fixed on the first support frame 52 and the second support frame 53. The first support frame 52 is fixed on the first insulator 21, and the second support frame 53 is fixed on the second insulator 22. The first contact arm 31 and the second contact arm 32 are both fixed on the insulating plate 51.

[0047] By utilizing the insulating plate 51, the first support frame 52, and the second support frame 53, the first contact arm 31 and the second contact arm 32 are fixed on the corresponding insulators, ensuring the installation stability of the first contact arm 31 and the second contact arm 32; the insulating plate 51 can not only provide support, but also ensure the insulation of the first contact arm 31 and the second contact arm 32.

[0048] In this embodiment, both the first support frame 52 and the second support frame 53 are U-shaped; both the first support frame 52 and the second support frame 53 are made of iron; the insulating plate 51 is attached to the outer side of the first support frame 52 and the second support frame 53; the end of the surge arrester 23 can be directly fixed to the corresponding position on the first copper busbar 41 and the second copper busbar.

[0049] In this embodiment, the fuse trolley also includes connecting bolts and connecting nuts, with multiple sets of connecting bolts and connecting nuts arranged in a one-to-one correspondence. For the first contact arm 31 and the first insulator 21, one end of the first connecting bolt is connected to the first contact arm 31, and the other end of the first connecting bolt passes through the first copper busbar 41, the insulating plate 51, and the first support frame 52 in sequence and is threadedly connected to the first connecting nut. One end of the second connecting bolt is connected to the first insulator 21, and the other end of the second connecting bolt passes through the first support frame 52 and is threadedly connected to the second connecting nut. For the second contact arm 32 and the second insulator 22, one end of the third connecting bolt is connected to the second contact arm 32, and the other end of the third connecting bolt passes through the second copper busbar, the insulating plate 51, and the second support frame 53 in sequence and is threadedly connected to the third connecting nut. One end of the fourth connecting bolt is connected to the second insulator 22, and the other end of the fourth connecting bolt passes through the second support frame 53 and is threadedly connected to the fourth connecting nut.

[0050] See Figure 5 and Figure 6 The first copper busbar 41 is provided with a third through hole 413, which is used for the first connecting bolt to pass through; the first copper busbar 41 is also provided with a second through hole 412, and the top end of the fuse 25 is fixed to the second through hole 412 by bolts and nuts; the first copper busbar 41 is also provided with a first through hole 411, and the end of the surge arrester 23 is fixed to the position of the first through hole 411 by bolts.

[0051] In this embodiment, the first copper busbar 41 and the second copper busbar have the same shape and size; the second through hole 412 is an oblong hole to accommodate fuses 25 of different sizes. By setting the second through hole 412 to be an oblong hole, when the fuses 25 are of different sizes, the fixed position of the end of the fuse 25 can be adjusted adaptively using bolts and nuts.

[0052] Optionally, a first insulating cover 61 is provided at the connection between the first contact arm 31 and the first insulator 21, and a second insulating cover 62 is provided at the connection between the second contact arm 32 and the second insulator 22. In this embodiment, the first insulating cover 61 covers the outside of the first support frame 52 and the first copper busbar 41, and the second insulating cover 62 covers the outside of the second support frame 53 and the second copper busbar. By providing the first insulating cover 61 and the second insulating cover 62, the internally enclosed components can be protected, external impurities can be isolated to prevent leakage or short circuit, and the safety performance of the fuse trolley can be improved.

[0053] Optionally, the switchgear is equipped with a grounding structure, which includes a duckbill grounding contact. The surge arrester 23 is equipped with a grounding wire and is connected to the duckbill grounding contact through the grounding wire. By connecting the surge arrester 23 to the duckbill grounding contact through the grounding wire, the duckbill grounding contact can effectively conduct the charge to the ground, thereby avoiding electric shock accidents, ensuring the personal safety of users, ensuring the normal operation of the fuse trolley, and extending its service life.

[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A fuse cart, characterized by, The box (10) is sequentially and spacedly provided with a first insulator (21), a lightning arrester (23), a second insulator (22) and a discharge counter (24) from top to bottom, the first insulator (21) is provided with a first contact arm (31), the second insulator (22) is provided with a second contact arm (32), a fuse (25) is arranged between the first contact arm (31) and the second contact arm (32), one end of the lightning arrester (23) is connected to the first contact arm (31), and the other end of the lightning arrester (23) is connected to the discharge counter (24).

2. The fuse cart of claim 1, wherein, The fuse (25) is connected to the first contact arm (31) through a first copper bar (41) at the top end, and connected to the second contact arm (32) through a second copper bar at the bottom end; and the lightning arrester (23) is connected to the first contact arm (31) through the first copper bar (41).

3. The fuse cart of claim 1, wherein, The box (10) is sequentially and spacedly provided with a first insulator (21), a lightning arrester (23), a second insulator (22) and a discharge counter (24) from top to bottom, the first insulator (21) is provided with a first contact arm (31), the second insulator (22) is provided with a second contact arm (32), a fuse (25) is arranged between the first contact arm (31) and the second contact arm (32), one end of the lightning arrester (23) is connected to the first contact arm (31), and the other end of the lightning arrester (23) is connected to the discharge counter (24).

4. The fuse cart of claim 3, wherein, The first support frame (52) and the second support frame (53) are both U-shaped, and / or the first support frame (52) and the second support frame (53) are both made of iron.

5. The fuse cart of claim 1, wherein, The first insulator (21), the lightning arrester (23) and the second insulator (22) all extend in the same direction, and the lightning arrester (23) is arranged at a position close to the first insulator (21) of the box (10).

6. The fuse cart of claim 1, wherein, The first contact arm (31) is provided with a first insulating cover (61) at the connection position with the first insulator (21), and the second contact arm (32) is provided with a second insulating cover (62) at the connection position with the second insulator (22).

7. The fuse cart of any of claims 1-6, wherein, The box (10) comprises a base (11) and a support (12), the base (11) and the support (12) are detachably connected by a first fastener, and the first insulator (21), the lightning arrester (23), the second insulator (22) and the discharge counter (24) are arranged on the support (12).

8. The fuse cart of claim 7, wherein, The support (12) is provided with a first support (121) and a second support (122), the first support (121) and the second support (122) are detachably fixed to the support (12) by a second fastener, the lightning arrester (23) is fixed to the first support (121), and the discharge counter (24) is fixed to the second support (122).

9. Switchgear cabinet, characterized in that The box (10) comprises a base (11) and a support (12), the base (11) and the support (12) are detachably connected by a first fastener, and the first insulator (21), the lightning arrester (23), the second insulator (22) and the discharge counter (24) are arranged on the support (12). The box (10) comprises a base (11) and a support (12), the base (11) and the support (12) are detachably connected by a first fastener, and the first insulator (21), the lightning arrester (23), the second insulator (22) and the discharge counter (24) are arranged on the support (12).

10. Switchgear according to claim 9, characterized in that The switch cabinet is provided with a grounding structure, the grounding structure comprises a duckbill grounding contact, and the lightning arrester (23) is provided with a grounding wire and connected to the duckbill grounding contact through the grounding wire.

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