阅读说明：本技术 一种电力防弧金具 (Electric arc-proof fitting ) 是由 熊莉 项兴尧 张萍 杨俊涛 曾麟钧 程丽 王丹 李鑫 刘华 于 2020-05-14 设计创作，主要内容包括：本发明属于电力技术领域,尤其是涉及一种电力防弧金具,具有金具本体(11)、击穿电极(13)、引弧电极(14)、上盖板(15)、下盖板(16)、连接螺杆(17)、压紧螺帽(18),上盖板(15)与下盖板(16)是一样的部件,其特征在于：所述上盖板(15)的电连接部件(193)的下部为半圆柱体形状,下盖板(16)的电连接部件的上部为半圆柱体形状；上盖板的电连接部件的左右对称轴线经过上盖板容缆腔的左右对称轴线,下盖板的电连接部件的左右对称轴线经过下盖板容缆腔的左右对称轴线；在使用时所述容缆腔内固定有电缆。本发明具有以下主要有益效果：结构简单、合理,易于组装及调整和调节,通用性高,防弧效果好。(The invention belongs to the technical field of electric power, and particularly relates to an electric arc protection fitting which is provided with a fitting body (11), a breakdown electrode (13), an arc striking electrode (14), an upper cover plate (15), a lower cover plate (16), a connecting screw rod (17) and a compression nut (18), wherein the upper cover plate (15) and the lower cover plate (16) are the same parts, and the electric arc protection fitting is characterized in that: the lower part of the electric connection component (193) of the upper cover plate (15) is in a semi-cylinder shape, and the upper part of the electric connection component of the lower cover plate (16) is in a semi-cylinder shape; the left-right symmetrical axis of the electric connecting part of the upper cover plate passes through the left-right symmetrical axis of the cable containing cavity of the upper cover plate, and the left-right symmetrical axis of the electric connecting part of the lower cover plate passes through the left-right symmetrical axis of the cable containing cavity of the lower cover plate; when in use, the cable is fixed in the cable accommodating cavity. The invention has the following main beneficial effects: simple and reasonable structure, easy assembly, adjustment and regulation, high universality and good arc prevention effect.)

1. An electric arc protection fitting comprises a fitting body (11), a breakdown electrode (13), an arc striking electrode (14), an upper cover plate (15), a lower cover plate (16), a connecting screw rod (17) and a gland nut (18), wherein the upper cover plate (15) and the lower cover plate (16) are the same component, the lower part of the upper cover plate (15) is provided with a cable containing cavity (12), an electric connecting component (193) extending out of the surface of the cable containing cavity (12) is arranged in the cable containing cavity (12), the upper cover plate (15) is opposite to the cable containing cavity (12) of the lower cover plate (16), the breakdown electrode (13) is positioned on the left side of the lower surface of the fitting body (11), the arc striking electrode (14) is positioned on the right side of the lower surface of the fitting body (11), both sides of the cable containing cavity (12) of the upper cover plate (15) and the lower cover plate (16) are provided with vertically through connecting holes, one end of the connecting screw rod (17) is, the other end of the connecting screw rod (17) penetrates through the lower surface of the lower cover plate (16), the lower surface of the upper cover plate (15) and penetrates out of the upper surface of the upper cover plate (15), and a compression nut (18) is screwed on the connecting screw rod (17) and fixes the upper cover plate (15), the lower cover plate (16) and the hardware fitting body (11) into a whole; the method is characterized in that: the lower part of the electric connection component (193) of the upper cover plate (15) is in a semi-cylinder shape, and the upper part of the electric connection component of the lower cover plate (16) is in a semi-cylinder shape; the left-right symmetrical axis of the electric connecting part of the upper cover plate passes through the left-right symmetrical axis of the cable containing cavity of the upper cover plate, and the left-right symmetrical axis of the electric connecting part of the lower cover plate passes through the left-right symmetrical axis of the cable containing cavity of the lower cover plate; when in use, the cable is fixed in the cable accommodating cavity.

2. The electric arc protection fitting comprises a fitting body (11), a breakdown electrode, an arc striking electrode, an upper cover plate (15), a lower cover plate (16), a connecting screw rod (17) and a compression nut (18), wherein the upper cover plate (15) and the lower cover plate (16) are the same component, a cable containing cavity (12) is formed in the lower portion of the upper cover plate (15), an electric connecting component (193) stretching out of the surface of the cable containing cavity (12) is arranged in the cable containing cavity (12), the upper cover plate (15) is opposite to the cable containing cavity (12) of the lower cover plate (16), the breakdown electrode (13) is located on the left side of the lower surface of the fitting body (11), the arc striking electrode (14) is located on the right side of the lower surface of the fitting body (11), connecting holes which are vertically communicated are formed in two sides of the cable containing cavity (12) of the upper cover plate (15) and the lower cover plate (16), one end of the connecting screw rod (17) is fixed to the fitting body (11), and the other end of the connecting, The lower surface of the upper cover plate (15) penetrates out of the upper surface of the upper cover plate (15), and a compression nut (18) is screwed on the connecting screw rod (17) and fixes the upper cover plate (15), the lower cover plate (16) and the hardware fitting body (11) into a whole; the method is characterized in that:

the upper surface of the upper cover plate (15) is provided with a downward sunken first closed groove, a first connecting channel penetrating through the cable containing cavity is arranged right below the first closed groove, the upper cover plate (15) is also provided with an electric connecting component (19) and a closed part (194), the electric connecting component (19) consists of a clamping part (191) and a first telescopic part (192) which are sequentially connected together, the electric connecting component (193) is composed of a lower part of the electric connecting component (193) in a semi-cylinder shape and extends out of the surface of the cable containing cavity, a first telescopic component (192) is positioned in a first connecting channel, a clamping component (191) is positioned in a first closed groove, the diameter of the first connecting channel is smaller than that of the first closed groove, the clamping component (191) is clamped by a closing component (194), the bilateral symmetry axis of the electric connecting component of the upper cover plate passes through the bilateral symmetry axis of the cable containing cavity of the upper cover plate, and the first telescopic component (192) can be compressed or elongated in the first connecting channel;

the lower surface of the lower cover plate (16) is provided with a second sealing groove which is sunken upwards, a second connecting channel which penetrates through the cable containing cavity is arranged right above the second sealing groove, the lower cover plate (16) is also provided with an electric connecting assembly and a sealing part, the electric connecting assembly is composed of a clamping part, a first telescopic part and an electric connecting part which are sequentially connected together, the upper part of the electric connecting part is in a semi-cylinder shape and extends out of the surface of the cable containing cavity, the first telescopic part is positioned in the second connecting channel, the clamping part is positioned in the second sealing groove, the diameter of the second connecting channel is smaller than that of the second sealing groove, the sealing part clamps the clamping part, the left-right symmetry axis of the electric connecting part of the lower cover plate passes through the left-right symmetry axis of the cable containing cavity of the lower cover plate, and the first telescopic part can be compressed or elongated in the second;

the breakdown electrode is composed of a second telescopic component (131), a first fixing component (132) and a first discharging component (133), the first fixing component (132) is fixed on the left side of the lower surface of the hardware fitting body (11), one end of the second telescopic component (131) is fixed on the first fixing component (132), the first discharging component (133) is fixed at the other end of the second telescopic component (131), and the second telescopic component (131) can rotate around the first fixing component (132) and is stretched towards one end and compressed inwards by taking the first fixing component (132) as one end;

the arc striking electrode is composed of a third telescopic component (141), a second fixing component (142) and a second discharging component (143), the second fixing component (142) is fixed on the right side of the lower surface of the hardware fitting body (11), one end of the third telescopic component (141) is fixed on the second fixing component (142), the second discharging component (143) is fixed at the other end of the third telescopic component (141), and the third telescopic component (141) can rotate around the second fixing component (142) and is stretched towards the place and compressed inwards by taking the second fixing component (142) as one end;

when in use, the cable is fixed in the cable accommodating cavity.

3. The electric arc protection fitting comprises a fitting body (11), a breakdown electrode, an arc striking electrode, an upper cover plate (15), a lower cover plate (16), a connecting screw rod (17) and a compression nut (18), wherein the upper cover plate (15) and the lower cover plate (16) are the same component, a cable containing cavity (12) is formed in the lower portion of the upper cover plate (15), an electric connecting component (193) stretching out of the surface of the cable containing cavity (12) is arranged in the cable containing cavity (12), the upper cover plate (15) is opposite to the cable containing cavity (12) of the lower cover plate (16), the breakdown electrode (13) is located on the left side of the lower surface of the fitting body (11), the arc striking electrode (14) is located on the right side of the lower surface of the fitting body (11), connecting holes which are vertically communicated are formed in two sides of the cable containing cavity (12) of the upper cover plate (15) and the lower cover plate (16), one end of the connecting screw rod (17) is fixed to the fitting body (11), and the other end of the connecting, The lower surface of the upper cover plate (15) penetrates out of the upper surface of the upper cover plate (15), and a compression nut (18) is screwed on the connecting screw rod (17) and fixes the upper cover plate (15), the lower cover plate (16) and the hardware fitting body (11) into a whole; the method is characterized in that:

the upper surface of the upper cover plate (15) is provided with a downward sunken first closed groove, a first connecting channel penetrating through the cable containing cavity is arranged right below the first closed groove, the upper cover plate (15) is also provided with an electric connecting component (19) and a closed part (194), the electric connecting component (19) consists of a clamping part (191) and a first telescopic part (192) which are sequentially connected together, the electric connecting component (193) is composed of a lower part of the electric connecting component (193) in a semi-cylinder shape and extends out of the surface of the cable containing cavity, a first telescopic component (192) is positioned in a first connecting channel, a clamping component (191) is positioned in a first closed groove, the diameter of the first connecting channel is smaller than that of the first closed groove, the clamping component (191) is clamped by a closing component (194), the bilateral symmetry axis of the electric connecting component of the upper cover plate passes through the bilateral symmetry axis of the cable containing cavity of the upper cover plate, and the first telescopic component (192) can be compressed or elongated in the first connecting channel;

the lower surface of the lower cover plate (16) is provided with a second sealing groove which is sunken upwards, a second connecting channel which penetrates through the cable containing cavity is arranged right above the second sealing groove, the lower cover plate (16) is also provided with an electric connecting assembly and a sealing part, the electric connecting assembly is composed of a clamping part, a first telescopic part and an electric connecting part which are sequentially connected together, the upper part of the electric connecting part is in a semi-cylinder shape and extends out of the surface of the cable containing cavity, the first telescopic part is positioned in the second connecting channel, the clamping part is positioned in the second sealing groove, the diameter of the second connecting channel is smaller than that of the second sealing groove, the sealing part clamps the clamping part, the left-right symmetry axis of the electric connecting part of the lower cover plate passes through the left-right symmetry axis of the cable containing cavity of the lower cover plate, and the first telescopic part can be compressed or elongated in the second;

when in use, the cable is fixed in the cable accommodating cavity.

4. The electric arc protection fitting comprises a fitting body (11), a breakdown electrode, an arc striking electrode, an upper cover plate (15), a lower cover plate (16), a connecting screw rod (17) and a compression nut (18), wherein the upper cover plate (15) and the lower cover plate (16) are the same component, a cable containing cavity (12) is formed in the lower portion of the upper cover plate (15), an electric connecting component (193) stretching out of the surface of the cable containing cavity (12) is arranged in the cable containing cavity (12), the upper cover plate (15) is opposite to the cable containing cavity (12) of the lower cover plate (16), the breakdown electrode (13) is located on the left side of the lower surface of the fitting body (11), the arc striking electrode (14) is located on the right side of the lower surface of the fitting body (11), connecting holes which are vertically communicated are formed in two sides of the cable containing cavity (12) of the upper cover plate (15) and the lower cover plate (16), one end of the connecting screw rod (17) is fixed to the fitting body (11), and the other end of the connecting, The lower surface of the upper cover plate (15) penetrates out of the upper surface of the upper cover plate (15), and a compression nut (18) is screwed on the connecting screw rod (17) and fixes the upper cover plate (15), the lower cover plate (16) and the hardware fitting body (11) into a whole; the method is characterized in that:

the upper surface of the upper cover plate (15) is provided with a downward sunken first closed groove, a first connecting channel penetrating through the cable containing cavity is arranged right below the first closed groove, the upper cover plate (15) is also provided with an electric connecting component (19) and a closed part (194), the electric connecting component (19) consists of a clamping part (191) and a first telescopic part (192) which are sequentially connected together, the electric connecting component (193) is composed of a lower part of the electric connecting component (193) in a semi-cylinder shape and extends out of the surface of the cable containing cavity, a first telescopic component (192) is positioned in a first connecting channel, a clamping component (191) is positioned in a first closed groove, the diameter of the first connecting channel is smaller than that of the first closed groove, the clamping component (191) is clamped by a closing component (194), the bilateral symmetry axis of the electric connecting component of the upper cover plate passes through the bilateral symmetry axis of the cable containing cavity of the upper cover plate, and the first telescopic component (192) can be compressed or elongated in the first connecting channel;

the lower surface of the lower cover plate (16) is provided with a second sealing groove which is sunken upwards, a second connecting channel which penetrates through the cable containing cavity is arranged right above the second sealing groove, the lower cover plate (16) is also provided with an electric connecting assembly and a sealing part, the electric connecting assembly is composed of a clamping part, a first telescopic part and an electric connecting part which are sequentially connected together, the upper part of the electric connecting part is in a semi-cylinder shape and extends out of the surface of the cable containing cavity, the first telescopic part is positioned in the second connecting channel, the clamping part is positioned in the second sealing groove, the diameter of the second connecting channel is smaller than that of the second sealing groove, the sealing part clamps the clamping part, the left-right symmetry axis of the electric connecting part of the lower cover plate passes through the left-right symmetry axis of the cable containing cavity of the lower cover plate, and the first telescopic part can be compressed or elongated in the second;

the breakdown electrode is composed of a second telescopic component (131), a first fixing component (132) and a first discharging component (133), the first fixing component (132) is fixed on the left side of the lower surface of the hardware fitting body (11), one end of the second telescopic component (131) is fixed on the first fixing component (132), the first discharging component (133) is fixed at the other end of the second telescopic component (131), and the second telescopic component (131) can rotate around the first fixing component (132) and is stretched towards one end and compressed inwards by taking the first fixing component (132) as one end;

when in use, the cable is fixed in the cable accommodating cavity.

5. The electric arc protection fitting comprises a fitting body (11), a breakdown electrode, an arc striking electrode, an upper cover plate (15), a lower cover plate (16), a connecting screw rod (17) and a compression nut (18), wherein the upper cover plate (15) and the lower cover plate (16) are the same component, a cable containing cavity (12) is formed in the lower portion of the upper cover plate (15), an electric connecting component (193) stretching out of the surface of the cable containing cavity (12) is arranged in the cable containing cavity (12), the upper cover plate (15) is opposite to the cable containing cavity (12) of the lower cover plate (16), the breakdown electrode (13) is located on the left side of the lower surface of the fitting body (11), the arc striking electrode (14) is located on the right side of the lower surface of the fitting body (11), connecting holes which are vertically communicated are formed in two sides of the cable containing cavity (12) of the upper cover plate (15) and the lower cover plate (16), one end of the connecting screw rod (17) is fixed to the fitting body (11), and the other end of the connecting, The lower surface of the upper cover plate (15) penetrates out of the upper surface of the upper cover plate (15), and a compression nut (18) is screwed on the connecting screw rod (17) and fixes the upper cover plate (15), the lower cover plate (16) and the hardware fitting body (11) into a whole; the method is characterized in that:

the upper surface of the upper cover plate (15) is provided with a downward sunken first closed groove, a first connecting channel penetrating through the cable containing cavity is arranged right below the first closed groove, the upper cover plate (15) is also provided with an electric connecting component (19) and a closed part (194), the electric connecting component (19) consists of a clamping part (191) and a first telescopic part (192) which are sequentially connected together, the electric connecting component (193) is composed of a lower part of the electric connecting component (193) in a semi-cylinder shape and extends out of the surface of the cable containing cavity, a first telescopic component (192) is positioned in a first connecting channel, a clamping component (191) is positioned in a first closed groove, the diameter of the first connecting channel is smaller than that of the first closed groove, the clamping component (191) is clamped by a closing component (194), the bilateral symmetry axis of the electric connecting component of the upper cover plate passes through the bilateral symmetry axis of the cable containing cavity of the upper cover plate, and the first telescopic component (192) can be compressed or elongated in the first connecting channel;

the lower surface of the lower cover plate (16) is provided with a second sealing groove which is sunken upwards, a second connecting channel which penetrates through the cable containing cavity is arranged right above the second sealing groove, the lower cover plate (16) is also provided with an electric connecting assembly and a sealing part, the electric connecting assembly is composed of a clamping part, a first telescopic part and an electric connecting part which are sequentially connected together, the upper part of the electric connecting part is in a semi-cylinder shape and extends out of the surface of the cable containing cavity, the first telescopic part is positioned in the second connecting channel, the clamping part is positioned in the second sealing groove, the diameter of the second connecting channel is smaller than that of the second sealing groove, the sealing part clamps the clamping part, the left-right symmetry axis of the electric connecting part of the lower cover plate passes through the left-right symmetry axis of the cable containing cavity of the lower cover plate, and the first telescopic part can be compressed or elongated in the second;

the arc striking electrode is composed of a third telescopic component (141), a second fixing component (142) and a second discharging component (143), the second fixing component (142) is fixed on the right side of the lower surface of the hardware fitting body (11), one end of the third telescopic component (141) is fixed on the second fixing component (142), the second discharging component (143) is fixed at the other end of the third telescopic component (141), and the third telescopic component (141) can rotate around the second fixing component (142) and is stretched towards the place and compressed inwards by taking the second fixing component (142) as one end;

when in use, the cable is fixed in the cable accommodating cavity.

6. An electric arc protection fitting according to claim 3 or claim 4 or claim 5, wherein said first telescopic member is a spring.

7. The electric arc protection fitting according to claim 6, wherein the material of the upper cover plate is metal; the lower cover plate is made of metal.

8. An electric arc protection fitting according to claim 1 or claim 2 or claim 3 or claim 4 or claim 5 or claim 7, wherein said cable is composed of a conductor (21) and an insulating layer (22) covering the conductor, said conductor has a circular cross section, four conductor connecting grooves (211) are symmetrically distributed on the outer edge of the conductor, the conductor connecting grooves (211) are in the shape of half cylinders, the grooves of the conductor connecting grooves face the outside of the conductor, an arc guiding groove (221) is arranged on the insulating layer (22) outside each conductor connecting groove (211), the arc guiding groove (221) and the conductor connecting grooves (211) are spliced into a complete cylinder hole, and the outer edge of the insulating layer (22) outside each cylinder hole is provided with a marking part (222).

9. An electric arc protection fitting according to any one of claims 1 to 6, characterized in that the cable is composed of a conductor (21) and an insulating layer (22) covering the conductor, the conductor has a circular cross section, four conductor connecting grooves (211) are symmetrically distributed on the outer edge of the conductor, the conductor connecting grooves (211) are in the shape of half cylinders, the grooves of the conductor connecting grooves face the outside of the conductor, and the outer edge of the insulating layer (22) outside each conductor connecting groove (211) is provided with an identification part (222).

10. An electric arc protection fitting according to any one of claims 1 to 6, characterized in that the cable is composed of a conductor (21) and an insulating layer (22) covering the conductor, the conductor has a circular cross section, two conductor connecting grooves (211) are symmetrically distributed on the outer edge of the conductor, the conductor connecting grooves (211) are semi-cylindrical, the grooves of the conductor connecting grooves face the outside of the conductor, an arc striking groove (221) is arranged on the insulating layer (22) outside each conductor connecting groove (211), the arc striking grooves (221) are communicated with the conductor connecting grooves (211), and an identification part (222) is arranged on the outer edge of the insulating layer (22) outside each arc striking groove (221).

Technical Field

The invention belongs to the technical field of electric power, and particularly relates to an electric arc protection fitting.

Background

CN1417912Y discloses an arc-proof hardware fitting and its installation method, it is made up of two semi-cylindrical bodies, there are striae in the middle of the level of the semi-cylinder of the body, both ends of striae are coarse grooves, there are grooves on the cambered surface of the semi-cylinder of the body, there are mounting holes on the groove, the invention is installed on the load side of insulated wire, the distance between the edge and the axis of the insulator is 100-150 millimetres, use it can make the insulated wire strip short, expose little, construct simply, with little investment, solve the wire strip of the prior art long, expose greatly, construct and install the disadvantage complicated, with large investment.

CN106207756A discloses a puncture type arc protection fitting, including the trapping mechanism, the trapping mechanism is including the last wire holder that is used for the insulating wire of centre gripping and the holder of inserting winding off the production line, goes up the wire holder and installs the puncture briquetting on the holder of inserting winding off the production line, compresses tightly fixedly through fastening bolt and fixation nut between the holder of inserting winding off the production line, be provided with on the holder of inserting winding off the production line with ground plate complex arc guide arm and burning arm, the externally mounted of the wire holder has insulating guard shield, and the ligature has insulating binding wire on the insulating guard shield, goes up the fastening bolt between wire holder and the holder of inserting winding off the production line and goes up detachable and be equipped with a buckle spare, and the surface of insulating guard shield is equipped with one deck heat. The advantages are that: the arc ignition arm and the combustion arm which are matched with the grounding plate are arranged on the lower wire holder, so that the aim of lightning protection is fulfilled, the traditional structure is simplified, and the production cost is reduced.

CN201075638U discloses an arc-proof fitting, which comprises an upper pressing plate and a lower pressing plate fastened with each other by bolts, wherein the fitting surfaces of the upper pressing plate and the lower pressing plate are both provided with piercing teeth, and each piercing tooth is embedded in the upper pressing plate or the lower pressing plate to form a split embedded type piercing mechanism. The puncture tooth is embedded and connected with the upper pressing plate and the pressing plate in a split mode, so that the puncture tooth can be independently processed into an ideal shape and specification without the limitation of a casting process, the structure is reasonable, the puncture capability can be greatly improved, insulating layers made of various materials can be punctured, and the conductive contact is very sufficient. And the puncture tooth can be independently produced by red copper and other materials, so that the electric conductivity is better.

CN203596581U discloses an air gap adjustable arc-proof hardware fitting, which includes: the first assembly comprises a body, a metal puncture part arranged on the body, and a breakdown electrode and an arc striking electrode which extend out of the body and respectively extend outwards, the first assembly is fixed on the insulated wire, and the metal puncture part punctures through an insulating layer of the insulated wire and is in contact with a wire core of the insulated wire; the insulating cover covers the first assembly; the second component is fixed on the insulated conducting wire through an insulator, and at least part of the outwards extending drainage electrode is movably arranged on the second component; the drainage electrode moves on the second component so that the distance of an air gap between the drainage electrode and the breakdown electrode is adjustable, and therefore the arc-proof metal tool can be suitable for the overhead insulated conductor lightning protection engineering in various altitude environments.

The above prior art actually adopts hard parts to realize puncturing, puncture the cable sheath and then realize contacting with the cable conductor, and then realize electric connection and realize discharging when electric arc occurs. However, after the cable is punctured, the cable insulation layer at the punctured position is difficult to process, so poor contact and poor discharge effect are often caused; secondly, after the cable in the prior art is punctured, the puncturing part is in point contact with the cable conductor, and because the electric arc is point discharge, when the electric arc occurs, the contact part is usually burnt to cause the blocking of the discharge, and further the cable is burnt to interrupt the electric power; third, among the prior art, the puncture part can cause the bruise of cable, generally can only adapt to the cable of single size only, and the adjustment of discharge gap can only be realized through the mounted position of gold utensil moreover, inconvenient regulation. Therefore, inconvenience and great economic loss are brought to users; the industry expects to solve the corresponding technical problems.

Disclosure of Invention

In order to solve the problems, the invention aims to disclose an electric arc protection fitting which is realized by adopting the following technical scheme.

An electric arc protection fitting comprises a fitting body, a breakdown electrode, an arc striking electrode, an upper cover plate, a lower cover plate, a connecting screw rod and a compression nut, wherein the upper cover plate and the lower cover plate are the same part; the method is characterized in that: the lower part of the electric connecting part of the upper cover plate is in a semi-cylinder shape, and the upper part of the electric connecting part of the lower cover plate is in a semi-cylinder shape; the left-right symmetrical axis of the electric connecting part of the upper cover plate passes through the left-right symmetrical axis of the cable containing cavity of the upper cover plate, and the left-right symmetrical axis of the electric connecting part of the lower cover plate passes through the left-right symmetrical axis of the cable containing cavity of the lower cover plate; when in use, the cable is fixed in the cable accommodating cavity.

An electric arc protection fitting comprises a fitting body, a breakdown electrode, an arc striking electrode, an upper cover plate, a lower cover plate, a connecting screw rod and a compression nut, wherein the upper cover plate and the lower cover plate are the same part; the method is characterized in that:

the upper surface of the upper cover plate is provided with a first sealing groove which is sunken downwards, a first connecting channel which penetrates through the cable containing cavity is arranged right below the first sealing groove, the upper cover plate is further provided with an electric connecting assembly and a sealing part, the electric connecting assembly is composed of a clamping part, a first telescopic part and an electric connecting part which are sequentially connected together, the lower part of the electric connecting part is in a semi-cylinder shape and extends out of the surface of the cable containing cavity, the first telescopic part is positioned in the first connecting channel, the clamping part is positioned in the first sealing groove, the diameter of the first connecting channel is smaller than that of the first sealing groove, the sealing part clamps the clamping part, the left and right symmetrical axis of the electric connecting part of the upper cover plate passes through the left and right symmetrical axis of the cable containing cavity of the upper cover plate, and the first telescopic part can be compressed or elongated in the first connecting channel;

the lower surface of the lower cover plate is provided with a second sealing groove which is sunken upwards, a second connecting channel which penetrates through the cable containing cavity is arranged right above the second sealing groove, the lower cover plate is also provided with an electric connecting assembly and a sealing part, the electric connecting assembly is composed of a clamping part, a first telescopic part and an electric connecting part which are sequentially connected together, the upper part of the electric connecting part is in a semi-cylinder shape and extends out of the surface of the cable containing cavity, the first telescopic part is positioned in the second connecting channel, the clamping part is positioned in the second sealing groove, the diameter of the second connecting channel is smaller than that of the second sealing groove, the clamping part is clamped by the sealing part, the left-right symmetrical axis of the electric connecting part of the lower cover plate passes through the left-right symmetrical axis of the cable containing cavity of the lower cover plate, and the first telescopic part can be compressed or elongated in;

the breakdown electrode is composed of a second telescopic component, a first fixing component and a first discharging component, the first fixing component is fixed on the left side of the lower surface of the hardware fitting body, one end of the second telescopic component is fixed on the first fixing component, the first discharging component is fixed at the other end of the second telescopic component, and the second telescopic component can rotate around the first fixing component and is stretched towards the place and compressed inwards by taking the first fixing component as one end;

the arc striking electrode is composed of a third telescopic component, a second fixing component and a second discharging component, the second fixing component is fixed on the right side of the lower surface of the hardware fitting body, one end of the third telescopic component is fixed on the second fixing component, the second discharging component is fixed at the other end of the third telescopic component, and the third telescopic component can rotate around the second fixing component and is stretched towards the place and compressed inwards by taking the second fixing component as one end;

when in use, the cable is fixed in the cable accommodating cavity.

An electric arc protection fitting comprises a fitting body, a breakdown electrode, an arc striking electrode, an upper cover plate, a lower cover plate, a connecting screw rod and a compression nut, wherein the upper cover plate and the lower cover plate are the same part; the method is characterized in that:

the upper surface of the upper cover plate is provided with a first sealing groove which is sunken downwards, a first connecting channel which penetrates through the cable containing cavity is arranged right below the first sealing groove, the upper cover plate is further provided with an electric connecting assembly and a sealing part, the electric connecting assembly is composed of a clamping part, a first telescopic part and an electric connecting part which are sequentially connected together, the lower part of the electric connecting part is in a semi-cylinder shape and extends out of the surface of the cable containing cavity, the first telescopic part is positioned in the first connecting channel, the clamping part is positioned in the first sealing groove, the diameter of the first connecting channel is smaller than that of the first sealing groove, the sealing part clamps the clamping part, the left and right symmetrical axis of the electric connecting part of the upper cover plate passes through the left and right symmetrical axis of the cable containing cavity of the upper cover plate, and the first telescopic part can be compressed or elongated in the first connecting channel;

the lower surface of the lower cover plate is provided with a second sealing groove which is sunken upwards, a second connecting channel which penetrates through the cable containing cavity is arranged right above the second sealing groove, the lower cover plate is also provided with an electric connecting assembly and a sealing part, the electric connecting assembly is composed of a clamping part, a first telescopic part and an electric connecting part which are sequentially connected together, the upper part of the electric connecting part is in a semi-cylinder shape and extends out of the surface of the cable containing cavity, the first telescopic part is positioned in the second connecting channel, the clamping part is positioned in the second sealing groove, the diameter of the second connecting channel is smaller than that of the second sealing groove, the clamping part is clamped by the sealing part, the left-right symmetrical axis of the electric connecting part of the lower cover plate passes through the left-right symmetrical axis of the cable containing cavity of the lower cover plate, and the first telescopic part can be compressed or elongated in;

when in use, the cable is fixed in the cable accommodating cavity.

An electric arc protection fitting comprises a fitting body, a breakdown electrode, an arc striking electrode, an upper cover plate, a lower cover plate, a connecting screw rod and a compression nut, wherein the upper cover plate and the lower cover plate are the same part; the method is characterized in that:

the upper surface of the upper cover plate is provided with a first sealing groove which is sunken downwards, a first connecting channel which penetrates through the cable containing cavity is arranged right below the first sealing groove, the upper cover plate is further provided with an electric connecting assembly and a sealing part, the electric connecting assembly is composed of a clamping part, a first telescopic part and an electric connecting part which are sequentially connected together, the lower part of the electric connecting part is in a semi-cylinder shape and extends out of the surface of the cable containing cavity, the first telescopic part is positioned in the first connecting channel, the clamping part is positioned in the first sealing groove, the diameter of the first connecting channel is smaller than that of the first sealing groove, the sealing part clamps the clamping part, the left and right symmetrical axis of the electric connecting part of the upper cover plate passes through the left and right symmetrical axis of the cable containing cavity of the upper cover plate, and the first telescopic part can be compressed or elongated in the first connecting channel;

the lower surface of the lower cover plate is provided with a second sealing groove which is sunken upwards, a second connecting channel which penetrates through the cable containing cavity is arranged right above the second sealing groove, the lower cover plate is also provided with an electric connecting assembly and a sealing part, the electric connecting assembly is composed of a clamping part, a first telescopic part and an electric connecting part which are sequentially connected together, the upper part of the electric connecting part is in a semi-cylinder shape and extends out of the surface of the cable containing cavity, the first telescopic part is positioned in the second connecting channel, the clamping part is positioned in the second sealing groove, the diameter of the second connecting channel is smaller than that of the second sealing groove, the clamping part is clamped by the sealing part, the left-right symmetrical axis of the electric connecting part of the lower cover plate passes through the left-right symmetrical axis of the cable containing cavity of the lower cover plate, and the first telescopic part can be compressed or elongated in;

the breakdown electrode is composed of a second telescopic component, a first fixing component and a first discharging component, the first fixing component is fixed on the left side of the lower surface of the hardware fitting body, one end of the second telescopic component is fixed on the first fixing component, the first discharging component is fixed at the other end of the second telescopic component, and the second telescopic component can rotate around the first fixing component and is stretched towards the place and compressed inwards by taking the first fixing component as one end;

when in use, the cable is fixed in the cable accommodating cavity.

An electric arc protection fitting comprises a fitting body, a breakdown electrode, an arc striking electrode, an upper cover plate, a lower cover plate, a connecting screw rod and a compression nut, wherein the upper cover plate and the lower cover plate are the same part; the method is characterized in that:

the upper surface of the upper cover plate is provided with a first sealing groove which is sunken downwards, a first connecting channel which penetrates through the cable containing cavity is arranged right below the first sealing groove, the upper cover plate is further provided with an electric connecting assembly and a sealing part, the electric connecting assembly is composed of a clamping part, a first telescopic part and an electric connecting part which are sequentially connected together, the lower part of the electric connecting part is in a semi-cylinder shape and extends out of the surface of the cable containing cavity, the first telescopic part is positioned in the first connecting channel, the clamping part is positioned in the first sealing groove, the diameter of the first connecting channel is smaller than that of the first sealing groove, the sealing part clamps the clamping part, the left and right symmetrical axis of the electric connecting part of the upper cover plate passes through the left and right symmetrical axis of the cable containing cavity of the upper cover plate, and the first telescopic part can be compressed or elongated in the first connecting channel;

the lower surface of the lower cover plate is provided with a second sealing groove which is sunken upwards, a second connecting channel which penetrates through the cable containing cavity is arranged right above the second sealing groove, the lower cover plate is also provided with an electric connecting assembly and a sealing part, the electric connecting assembly is composed of a clamping part, a first telescopic part and an electric connecting part which are sequentially connected together, the upper part of the electric connecting part is in a semi-cylinder shape and extends out of the surface of the cable containing cavity, the first telescopic part is positioned in the second connecting channel, the clamping part is positioned in the second sealing groove, the diameter of the second connecting channel is smaller than that of the second sealing groove, the clamping part is clamped by the sealing part, the left-right symmetrical axis of the electric connecting part of the lower cover plate passes through the left-right symmetrical axis of the cable containing cavity of the lower cover plate, and the first telescopic part can be compressed or elongated in;

the arc striking electrode is composed of a third telescopic component, a second fixing component and a second discharging component, the second fixing component is fixed on the right side of the lower surface of the hardware fitting body, one end of the third telescopic component is fixed on the second fixing component, the second discharging component is fixed at the other end of the third telescopic component, and the third telescopic component can rotate around the second fixing component and is stretched towards the place and compressed inwards by taking the second fixing component as one end;

when in use, the cable is fixed in the cable accommodating cavity.

The electric arc protection fitting is characterized in that the first telescopic part is a spring.

The electric arc protection fitting is characterized in that the second telescopic part is a spring.

The electric arc protection fitting is characterized in that the third telescopic part is a spring.

The electric arc protection fitting is characterized in that the upper cover plate is made of metal.

The electric arc protection fitting is characterized in that the lower cover plate is made of metal.

The electric arc protection hardware fitting is characterized in that the conductor connecting grooves in the cable can also be communicated; thus, the scattered arc is smoother.

The invention has the following main beneficial effects: simple and reasonable structure, easy assembly, adjustment and regulation, high universality and good arc prevention effect.

Drawings

Fig. 1 is a schematic plan view of an example 1 mounting structure.

Fig. 2 is a schematic plan view of the mounting structure of example 2.

Fig. 3 is a schematic cross-sectional view of a cable for use in the present application.

Fig. 4 is a schematic view of yet another cross-sectional configuration of a cable for use in the present application.

Fig. 5 is a schematic cross-sectional view of yet another cable for use in the present application.

In order that those skilled in the art will more accurately and clearly understand and practice the present application, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which: 11-hardware body, 12-cable containing cavity, 13-breakdown electrode, 14-arc striking electrode, 15-upper cover plate, 16-lower cover plate, 17-connecting screw rod, 18-gland nut, 21-conductor, 22-insulating layer, 131-second telescopic component, 132-first fixing component, 133-first discharge component, 141-third telescopic component, 142-second fixing component, 143-second discharge component, 19-electric connection component, 191-clamping component, 192-first telescopic component, 193-electric connection component, 194-sealing component, 211-conductor connecting groove, 221-arc striking groove and 222-identification component.

Detailed Description

Examples 1

Referring to fig. 1 and fig. 3 to 5, an electric arc protection fitting includes a fitting body 11, a breakdown electrode 13, an arc striking electrode 14, an upper cover plate 15, a lower cover plate 16, a connecting screw 17, and a gland nut 18, where the upper cover plate 15 and the lower cover plate 16 are the same component, the lower portion of the upper cover plate 15 has a cable accommodating cavity 12, the cable accommodating cavity 12 has an electrical connection component 193 extending out of the surface of the cable accommodating cavity 12, the upper cover plate 15 is opposite to the cable accommodating cavity 12 of the lower cover plate 16, the breakdown electrode 13 is located on the left side of the lower surface of the fitting body 11, the arc striking electrode 14 is located on the right side of the lower surface of the fitting body 11, both sides of the cable accommodating cavities 12 of the upper cover plate 15 and the lower cover plate 16 have vertically through connection holes, one end of the connecting screw 17 is fixed on the fitting body 11, the other end of the connecting screw 17 passes through the lower surface of the lower cover plate 16, the lower surface of, a compression nut 18 is screwed on the connecting screw rod 17 and fixes the upper cover plate 15, the lower cover plate 16 and the hardware fitting body 11 into a whole; the method is characterized in that: the lower part of the electric connecting component 193 of the upper cover plate 15 is in a semi-cylinder shape, and the upper part of the electric connecting component of the lower cover plate 16 is in a semi-cylinder shape; the bilateral symmetry axis of the electric connection part of the upper cover plate passes through the bilateral symmetry axis of the cable containing cavity of the upper cover plate, and the bilateral symmetry axis of the electric connection part of the lower cover plate passes through the bilateral symmetry axis of the cable containing cavity of the lower cover plate.

Referring to fig. 3, a cable corresponding to the electric arc protection hardware fitting in the present application is composed of a conductor 21 and an insulating layer 22 covering the conductor, where the conductor has a circular cross section, four conductor connection slots 211 are symmetrically distributed on an outer edge of the conductor, the conductor connection slots 211 are in a half-cylinder shape, a groove of each conductor connection slot faces the outside of the conductor, an arc striking slot 221 is formed in the insulating layer 22 outside each conductor connection slot 211, the arc striking slot 221 and the conductor connection slot 211 are spliced to form a complete cylinder hole, and an identification component 222 is arranged on an outer edge of the insulating layer 22 outside each cylinder hole.

Referring to fig. 4, a cable corresponding to the electric arc protection hardware fitting in the present application is composed of a conductor 21 and an insulating layer 22 covering the conductor, where the conductor has a circular cross section, four conductor connection slots 211 are symmetrically distributed on an outer edge of the conductor, the conductor connection slots 211 are in a half-cylinder shape, a groove of each conductor connection slot faces the outside of the conductor, and an identification component 222 is arranged on an outer edge of the insulating layer 22 outside each conductor connection slot 211.

Referring to fig. 5, a cable corresponding to the electric arc protection hardware fitting in the present application is composed of a conductor 21 and an insulating layer 22 covering the conductor, where the conductor has a circular cross section, two conductor connection slots 211 are symmetrically distributed on an outer edge of the conductor, the conductor connection slots 211 are in a half-cylinder shape, a groove of each conductor connection slot faces the outside of the conductor, an arc striking slot 221 is formed in the insulating layer 22 outside each conductor connection slot 211, the arc striking slot 221 is communicated with the conductor connection slot 211, and an identification component 222 is arranged on an outer edge of the insulating layer 22 outside each arc striking slot 221.

In the above-mentioned cable, the sign part is the mark of printing, or line or recess or bulge etc. and the purpose is that the construction is, and the staff only needs to adopt the cutter, cuts downwards along the sign part, because the insulating layer of sign part department is thinner or its under have the conductor spread groove promptly, so can more light cut, need not destroy the cable through brute force like this, simultaneously, cut partly back, with gold utensil electrical connection part embedding in the striking groove 221 of cable can, cooperation gland nut 18 compresses tightly, can make electrical connection part and conductor cambered surface contact.

The electric arc protection hardware fitting is characterized in that the conductor connecting grooves in the cable can also be communicated; thus, the scattered arc is smoother.

EXAMPLES example 2

Referring to fig. 2 and fig. 3 to 5, an electric arc protection fitting includes a fitting body 11, a breakdown electrode, an arc striking electrode, an upper cover plate 15, a lower cover plate 16, a connecting screw 17, and a gland nut 18, where the upper cover plate 15 and the lower cover plate 16 are the same component, the lower portion of the upper cover plate 15 has a cable accommodating cavity 12, the cable accommodating cavity 12 has an electrical connecting component 193 therein, the cable accommodating cavity 12 of the cable accommodating cavity 12 extends out, the upper cover plate 15 is opposite to the cable accommodating cavity 12 of the lower cover plate 16, the breakdown electrode 13 is located on the left side of the lower surface of the fitting body 11, the arc striking electrode 14 is located on the right side of the lower surface of the fitting body 11, both sides of the cable accommodating cavities 12 of the upper cover plate 15 and the lower cover plate 16 have through connecting holes, one end of the connecting screw 17 is fixed on the fitting body 11, the other end of the connecting screw 17 passes through the lower surface of the lower cover plate 16 and the, a compression nut 18 is screwed on the connecting screw rod 17 and fixes the upper cover plate 15, the lower cover plate 16 and the hardware fitting body 11 into a whole; the method is characterized in that:

the upper cover plate 15 is provided with a downward-recessed first closed groove on the upper surface, a first connecting channel penetrating through the cable containing cavity is arranged right below the first closed groove, the upper cover plate 15 is further provided with an electric connecting component 19 and a closed component 194, the electric connecting component 19 is composed of a clamping component 191, a first telescopic component 192 and an electric connecting component 193 which are sequentially connected together, the lower part of the electric connecting component 193 is in a semi-cylinder shape and extends out of the surface of the cable containing cavity, the first telescopic component 192 is positioned in the first connecting channel, the clamping component 191 is positioned in the first closed groove, the diameter of the first connecting channel is smaller than that of the first closed groove, the clamping component 191 is clamped by the closed component 194, the left-right symmetry axis of the electric connecting component of the upper cover plate passes through the left-right symmetry axis of the cable containing cavity of the upper cover plate, and the first telescopic component 192 can be compressed or elongated in the first connecting channel;

the lower surface of the lower cover plate 16 is provided with a second sealing groove which is sunken upwards, a second connecting channel which penetrates through the cable containing cavity is arranged right above the second sealing groove, the lower cover plate 16 is also provided with an electric connecting assembly and a sealing part, the electric connecting assembly is composed of a clamping part, a first telescopic part and an electric connecting part which are sequentially connected together, the upper part of the electric connecting part is in a semi-cylinder shape and extends out of the surface of the cable containing cavity, the first telescopic part is positioned in the second connecting channel, the clamping part is positioned in the second sealing groove, the diameter of the second connecting channel is smaller than that of the second sealing groove, the sealing part clamps the clamping part, the left-right symmetrical axis of the electric connecting part of the lower cover plate passes through the left-right symmetrical axis of the cable containing cavity of the lower cover plate, and the first telescopic part can be compressed or elongated in the second;

the breakdown electrode is composed of a second telescopic component 131, a first fixing component 132 and a first discharging component 133, the first fixing component 132 is fixed on the left side of the lower surface of the hardware fitting body 11, one end of the second telescopic component 131 is fixed on the first fixing component 132, the first discharging component 133 is fixed at the other end of the second telescopic component 131, and the second telescopic component 131 can rotate around the first fixing component 132 and is stretched and compressed inwards by taking the first fixing component 132 as one end;

the arc striking electrode is composed of a third telescopic member 141, a second fixing member 142 and a second discharging member 143, the second fixing member 142 is fixed to the right side of the lower surface of the fitting body 11, one end of the third telescopic member 141 is fixed to the second fixing member 142, the second discharging member 143 is fixed to the other end of the third telescopic member 141, and the third telescopic member 141 can rotate around the second fixing member 142 and can be stretched and compressed inward with the second fixing member 142 as one end.

In this embodiment, the cylindrical portion of the electrical connection member cannot recede into or protrude into the first connection passage and the second connection passage.

In this embodiment, the third telescopic member 141 and the second discharge member 143 may be welded together as an integral structure; similarly, the second telescopic member 131 and the first discharge member 133 may also be welded together as an integral structure; similarly, the engaging member 191, the first telescopic member 192 and the electrical connecting member 193 may also be an integrated structure or welded together, and the engaging member 191 may be fixed in the closed groove by rotation or may be fixed in the closed groove by the rotatable closing member 194; the parts in the present application are electrically conductive except for the insulating layer, and the closed slot is more usually located at the center of the upper cover plate or the center of the lower cover plate.

The cable suitable for this embodiment is shown in fig. 3 to 5, but not limited to the above, and it should be considered as the cable structure to be protected in this application without making creative efforts.

In this embodiment, the first telescopic member can be compressed or elongated in the first connecting channel of the upper cover plate, and the first telescopic member can be compressed or elongated in the second connecting channel of the lower cover plate; the end of the electric connection component is in a semi-cylinder shape, so that the electric connection component can be matched with a conductor connecting groove of a cable to form close surface contact, and the contact between the end of the electric connection component and the conductor connecting groove is more stable and reliable due to the elasticity and the rigidity of the first telescopic component; moreover, the cable can be stretched or compressed, so that the cable can be suitable for cables with different diameters, and compared with the cable which is only suitable for one outer diameter in the prior art, the cable is more flexible and convenient to use.

In this embodiment, the second telescopic member 131 is rotatable, extendable and compressible; and the third telescopic member 141 is rotatable, extendable and compressible; the positions of the first discharging component 133 and the second discharging component 143 can be flexibly adjusted, namely, the adjustment of the discharging gap is more convenient, and effective discharging can still be realized when the installing position of the hardware is deviated in a larger range.

Of course, the hardware in this embodiment may be only one of the electrical connection component, the breakdown electrode, and the arc striking electrode (as compared with embodiment 1), or may be any two of them, which can solve some problems in the prior art.

The technical problems that after a cable is punctured, a cable insulating layer at the punctured position is difficult to treat, poor contact and poor discharge effect are often caused in the prior art are solved; the technical problems that after the cable is punctured, a puncturing part is in point contact with a cable conductor, electric arc is point discharge, when the electric arc occurs, the contact part is burnt, the discharge is blocked, the cable is burnt, and power is interrupted are solved; the technical problems that in the prior art, a cable is hard damaged due to a puncture part, the cable is only suitable for the cable with a single size, and the discharge gap can be adjusted only by the installation position of a fitting tool, so that the adjustment is inconvenient are solved.

The invention has the following main beneficial effects: simple and reasonable structure, easy assembly, adjustment and regulation, high universality and good arc prevention effect. .

The above-mentioned embodiments are merely preferred technical solutions of the present invention, and should not be construed as limiting the present invention. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.