Insulating protective cover

Abstract

The utility model discloses an insulating protective cover which is used for covering the top of an electric pole and a metal structure in the middle of a composite cross arm, the composite cross arm is fixed to the electric pole and comprises two first cross arms, each first cross arm comprises a connecting fitting, a tension piece is connected to the connecting fitting, and the insulating protective cover comprises a first protective cover body and a second protective cover body. The first protective cover is used for covering the top of the electric pole and a metal structure on the upper side of the middle of the composite cross arm, the second protective cover is used for covering a metal structure on the lower side of the middle of the composite cross arm, and the top of the first protective cover is of a pinnacle structure. The insulation protective cover can cover the top of the electric pole and a metal structure in the middle of the composite cross arm so as to enhance the insulation effect of the top of the electric pole, accidents such as tripping caused by electric shock birds can be effectively prevented, safety is higher, operation and maintenance cost is lower, and biological diversity is protected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of overhead transmission lines, in particular to an insulation protective cover. BACKGROUND

[0002] The cross arm is a component installed on the electric pole in the overhead line, which mainly supports the conductor. The traditional power transmission pole adopts iron cross arm, and the conductor is hung by installing insulators on the iron cross arm. When the conductor adopts bare conductor, birds taking off or landing from the power transmission pole may simultaneously contact any two conductors or any one conductor and the iron cross arm, forming a closed circuit to cause electric shock, which will directly affect the normal operation of the power infrastructure, cause tripping accidents, and also cause bird death and reduce biodiversity. CONTENT OF THE UTILITY MODEL

[0003] In view of the defects of the prior art, the purpose of the present application is to provide an insulation protective cover which can cover the metal structure on the top of the electric pole and the middle part of the composite cross arm, so as to strengthen the insulation effect of the top of the electric pole, effectively prevent tripping accidents caused by electric shock of birds, and have higher safety and lower operation and maintenance cost, thereby protecting biodiversity.

[0004] To achieve the above purpose, the technical scheme adopted by the present application is: an insulation protective cover is used for covering the metal structure on the top of the electric pole and the middle part of the composite cross arm, the composite cross arm is fixed on the electric pole, the composite cross arm comprises two first cross arms, each first cross arm comprises a connecting fitting, and a strain member is connected to the connecting fitting; the insulation protective cover comprises a first protective cover and a second protective cover, the first protective cover is used for covering the metal structure on the top of the electric pole and the upper side of the middle part of the composite cross arm, and the second protective cover is used for covering the metal structure on the lower side of the middle part of the composite cross arm; and the top of the first protective cover is a pointed top structure.

[0005] Among them, the main body structure of the first protective cover is a cuboid structure with an open bottom, the height of the cuboid structure in the vertical direction matches the first installation height of the first cross arm, the width of the cuboid structure in the conductor extension direction matches the installation width of the first cross arm, and the length of the cuboid structure in the length direction of the first cross arm matches the length of the electric pole.

[0006] Among them, the first protective cover is provided with a plurality of first cavities, four second cavities and two third cavities, the plurality of first cavities are arranged corresponding to the first installation holes on the electric pole, the four second cavities are arranged corresponding to the installation positions of the first cross arms, and the two third cavities are arranged corresponding to the installation positions of the strain members.

[0007] Among them, the second cavities of the first protective cover are each provided with an extended third protective cover, the extension direction of the third protective cover is the same as the length direction of the first cross arm, and the third protective cover is used for covering the metal structure protruding from the electric pole in the length direction of the connecting fitting.

[0008] Among them, a fourth protective cover is extended outside the third cavity of the first protective cover, and the extension direction of the fourth protective cover is the same as the length direction of the tension member, and is used to cover the metal connection structure between the tension member and the connecting hardware.

[0009] Among them, the main structure of the second protective cover is a rectangular structure with openings at the bottom and top. The length and width of the rectangular structure are the same as those of the first protective cover, and the height of the rectangular structure in the vertical direction matches the second installation height of the first cross arm.

[0010] Among them, a plurality of fourth cavities are provided on the second protective cover, and the plurality of fourth cavities are arranged corresponding to the first mounting holes on the pole.

[0011] The second protective cover includes two sub-protective covers, which are rectangular structures with three sides open. The two sub-protective covers are assembled to form the second protective cover.

[0012] Among them, the insulating protective cover also includes a fastener protective cover, which is used to cover the fasteners that need to be inserted during the installation of the composite crossarm.

[0013] Among them, the insulating protective cover is made of silicone rubber.

[0014] The beneficial effects of the present application are: different from the existing technology, the insulating protective cover of the present application can cover the metal structure at the top of the pole and the middle of the composite crossarm to enhance the insulation effect of the top of the pole, effectively prevent accidents such as tripping caused by electric shocks to birds, with higher safety and lower operation and maintenance costs. At the same time, it can reduce the chance of birds being electrocuted to death and protect biodiversity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 1 is a schematic structural diagram of a transmission pole 1000 according to an embodiment of the present application;

[0016] Figure 2 This is a schematic structural diagram of a first cross arm 100 according to an embodiment of the present application;

[0017] Figure 3 This is a schematic structural diagram of a connection fitting 120 according to an embodiment of the present application;

[0018] Figure 4 1 is a partial structural diagram of a first cross arm 100 according to an embodiment of the present application;

[0019] Figure 5 1 is a schematic structural diagram of an end fitting 140 according to an embodiment of the present application;

[0020] Figure 6 It is a partial structural diagram of a transmission pole 1000 according to another embodiment of the present application. DETAILED DESCRIPTION

[0021] The specific embodiments of the present application will be disclosed here according to the requirements. However, it should be understood that the embodiments disclosed here are only typical examples of the present application, which can be embodied in various forms. Therefore, the specific details disclosed here should not be considered as limiting, but only as a representative basis for teaching those skilled in the art to apply the present application differently in practice, including the use of various features disclosed here and in combination with features that can not be explicitly disclosed here.

[0022] Unless otherwise explicitly specified or limited, the "connection" described in the present application should be understood in a broad sense, which can be directly connected or connected through an intermediate medium. In the description of the present application, it should be understood that the orientation or position relationship indicated by "upper", "lower", "end", "one end" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] As shown in Figure 1 The present application provides a power transmission pole 1000, which is a strain pole including a composite cross arm 10 and a pole 20, and the composite cross arm 10 is fixed on the pole 20. In the power system, the strain pole refers to a tower used in the middle of the line to segment the circuit to control the range of pole falling and wire breaking, and the strain pole hangs the conductor by setting the strain assembly and strain clamp on the cross arm.

[0024] The composite cross arm 10 includes two first cross arms 100, two first connecting assemblies 200, a second connecting assembly 300, and two strain members 400. The first middle parts of the two first cross arms 100 are fixed on both sides of the pole 20 respectively, and the length directions of the two first cross arms 100 are located in the same horizontal plane and are parallel to each other. The corresponding end parts of the two first cross arms 100 are connected together through the first connecting assembly 200, and the two ends of the first connecting assembly 200 are respectively used to connect two first clamps 11 to hang the phase conductor and the phase jumper. The corresponding second middle parts of the two first cross arms 100 are connected together through the second connecting assembly 300, and are used to connect the second clamp 12 to hang the middle phase jumper. The second clamp 12 is located below the first cross arm 100. One end of each of the two strain members 400 is connected to the first middle part of the two first cross arms 100, and the other end of each of the two strain members 400 is used to connect the first clamp 11 to hang the middle phase conductor and the middle phase jumper. The length direction of the strain member 400 is located in the same horizontal plane as the length direction of the first cross arm 100 and is perpendicular to each other.

[0025] It should be noted that the first middle part and the second middle part written in the present application refer to the parts between the two ends, not strictly to the central part. The second middle part of the first cross arm 100 is located between the first middle part and the end of the first cross arm 100.

[0026] As shown in Figure 2 , the first cross arm 100 includes a core rod 110 (only marked in the figure for illustration), a connecting fitting 120, an intermediate fitting 130, two end fittings 140, and an insulation layer 150. The connecting fitting 120 is connected to the first middle part of the core rod 110 and is used to connect the tension member 400 and the pole 20. The intermediate fitting 130 is connected to the second middle part of the core rod 110 and is used to connect the second connecting assembly 300. The two end fittings 140 are respectively connected to the two ends of the core rod 110 and are used to connect the first connecting assembly 200. The insulation layer 150 covers at least part of the outer circumferential surface of the core rod 110.

[0027] As shown in Figure 3 , the connecting fitting 120 is a cross-shaped fitting. The connecting fitting 120 includes a first sleeve 121 and a pole connecting member 122. The first sleeve 121 is a hollow pipe structure and is sleeved on the first middle part of the core rod 110. The first sleeve 121 is fixed on the core rod 110 by a press-fit process. The pole connecting member 122 is connected perpendicularly to the first sleeve 121 and is used to fix the first cross arm 100 on the pole 20.

[0028] The pole connecting member 122 includes two first connecting members 123. The two first connecting members 123 are connected perpendicularly to the middle part of the first sleeve 121 and are respectively located on the two axial sides of the first sleeve 121. The first connecting members 123 are used to connect the pole 20.

[0029] The first connecting member 123 includes a first plate member 1231 and two second plate members 1232. The first plate member 1231 and the second plate members 1232 are connected perpendicularly. The two second plate members 1232 extend away from the first plate member 1231 in the same direction from the two ends of the first plate member 1231. The ends of the two second plate members 1232, which are not connected to the first plate member 1231, are connected perpendicularly to the first sleeve 121. The two second plate members 1232 are each provided with a first connecting hole 12321 for connecting the pole 20. The two first connecting holes 12321 are coaxially arranged and their penetration directions are perpendicular to the plate surface of the second plate members 1232. The pole 20 is provided with a first mounting hole (not shown in the figure) corresponding to and matching the first connecting hole 12321. By threading fasteners such as bolts and rods in the corresponding first connecting hole 12321 and the first mounting hole, the connecting fitting 120 and the pole 20 can be matched and connected. That is, it is not necessary to punch holes in the first sleeve 121 and the core rod 110 for connection, thereby avoiding the influence of punching on the mechanical properties of the core rod 110 and further avoiding the generation of power safety hazards.

[0030] The first sleeve 121 is provided with a strain connecting part 124 on the side away from the pole 20, and the strain connecting part 124 is provided with a second connecting hole 1241 for connecting the strain member 400. The strain connecting part 124 can be arranged at the middle part of the first sleeve 121, so that the strain member 400 is more evenly stressed after installation.

[0031] The strain connecting part 124 is an L-shaped plate member, including a third plate member 1242 and a fourth plate member 1243 connected vertically, the third plate member 1242 is connected to the side surface of the first sleeve 121 away from the pole 20 in the vertical direction; the fourth plate member 1243 is arranged in the horizontal direction and extends away from the first sleeve 121, and the end of the fourth plate member 1243 connected with the third plate member 1242 is also connected with the first sleeve 121, and the fourth plate member 1243 is provided with the second connecting hole 1241, the through direction of the second connecting hole 1241 is perpendicular to the plate surface direction of the fourth plate member 1243, and the second connecting hole 1241 is used to connect the strain member 400 through a hanging ring or other connecting member. The third plate member 1242 can strengthen the connection strength between the fourth plate member 1243 and the first sleeve 121, and further make the installation of the strain member 400 more stable.

[0032] As shown in Figure 4 The intermediate fitting 130 includes a second sleeve 131 and a second connecting member 132, the second sleeve 131 is sleeved on the second middle part of the core rod 110, and the second connecting member 132 is connected to the bottom side of the second sleeve 131, and the second connecting member 132 is provided with a third connecting hole 1321 for connecting the second connecting assembly 300 through bolts, screws or other fasteners, so that the second sleeve 131 and the core rod 110 do not need to be punched for connection, avoiding the influence of punching on the mechanical properties of the core rod 110, and further avoiding the generation of power safety hazards.

[0033] The second connecting member 132 includes two fifth plate members 1322, the fifth plate members 1322 are connected to the bottom side of the second sleeve 131 and extend away from the second sleeve 131 in the horizontal direction, and the two fifth plate members 1322 are symmetrically arranged along the axis of the second sleeve 131, that is, the two fifth plate members 1322 are arranged away from each other in the horizontal plane where the bottom surface of the second sleeve 131 is located, and the fifth plate members 1322 are provided with the third connecting hole 1321, and the through direction of the third connecting hole 1321 is perpendicular to the plate surface direction of the fifth plate member 1322. Further, the fifth plate member 1322 is located at the middle part of the second sleeve 131, so that the second connecting assembly 300 is more evenly stressed after installation.

[0034] As shown in Figure 5As shown, the end fitting 140 includes an end sleeve 141 and a third connecting member 142. The end sleeve 141 is sleeved on the end of the core rod 110, and the third connecting member 142 is connected to the top of the end sleeve 141. The third connecting member 142 is provided with a fourth connecting hole 1421, which is used to connect the first connecting component 200 through fasteners such as bolts and screws. That is, there is no need to drill holes on the end sleeve 141 and the core rod 110 for connection, so as to avoid affecting the mechanical properties of the core rod 110 due to drilling, thereby avoiding electrical safety hazards.

[0035] The end sleeve 141 is a hollow tube structure with one end closed. The open end of the end sleeve 141 is sleeved on the outer periphery of the end of the core rod 110 , and the end sleeve 141 is fixed to the end of the core rod 110 by a crimping process.

[0036] The third connecting member 142 includes two sixth plates 1422, which are connected to the top side of the end sleeve 141 and extend horizontally away from the end sleeve 141. The two sixth plates 1422 are symmetrically arranged along the axis of the end sleeve 141, that is, the two sixth plates 1422 are arranged away from each other in the horizontal plane where the top surface of the end sleeve 141 is located. The sixth plates 1422 are provided with fourth connecting holes 1421, and the direction of the fourth connecting holes 1421 is perpendicular to the plate surface of the sixth plates 1422. Furthermore, the third connecting member 142 is located on the top side of the end sleeve 141 that is not connected to the core rod 110, so as to reserve a crimping position between the end sleeve 141 and the core rod 110, thereby ensuring the connection strength between the end hardware 140 and the core rod 110.

[0037] The insulating layer 150 comprises a sheath, which is located around the core rod 110, excluding the connecting fittings 120, the intermediate fittings 130, and the end fittings 140. Sealed connections are established between the insulating layer 150 and the connecting fittings 120, the intermediate fittings 130, and the end fittings 140. This effectively prevents moisture from invading and damaging the core rod 110, thereby reducing the service life of the first crossarm 100. Furthermore, the insulating layer 150 includes sheds spaced apart from the sheath to increase the creepage distance of the outer surface of the first crossarm 100. These sheds also prevent birds from nesting, improving the overall electrical safety of the first crossarm 100.

[0038] In one embodiment, the insulating layer 150 is high-temperature vulcanized silicone rubber. The silicone rubber material is wrapped around the outer periphery of the core rod 110 through an overall vacuum injection molding process to form a high-temperature vulcanized silicone rubber insulation layer as a whole. The high-temperature vulcanized silicone rubber has good aging resistance and hydrophobic migration, which can reduce the probability of pollution flashover and rain flashover, and improve the electrical safety of the first crossarm 100.

[0039] The first sleeve 121, the second sleeve 131 and the end sleeve 141 have cross sections matching the cross section of the core rod 110 in shape and size. In an embodiment, the cross section of the core rod 110 is square, each sleeve is a square tube, so as to fix each sleeve on the core rod 110, and increase the contact area between each sleeve and the core rod 110, and ensure the connection strength between the connecting fitting 120, the intermediate fitting 130, the end fitting 140 and the core rod 110.

[0040] In combination Figure 1 and Figure 5 As shown in FIG. 1, the top side of the end fittings 140 corresponding to the two first cross arms 100 are connected together by the first connecting assembly 200 for connecting the first wire clamps 11. The first connecting assembly 200 is an angle steel piece with an L-shaped cross section, and two groups of second mounting holes (not shown in the figure) are arranged on the first connecting assembly 200, each group including two second mounting holes, and the two second mounting holes are arranged corresponding to the two fourth connecting holes 1421 on the end fittings 140, so as to connect the end fittings 140 corresponding to the two first cross arms 100 together by the first connecting assembly 200; the two ends of the first connecting assembly 200 are further respectively provided with a third mounting hole (not shown in the figure) for connecting the first wire clamps 11 by U-shaped hanging rings, i.e., the two first wire clamps 11 are connected to the two ends of the first connecting assembly 200 respectively. During installation, the two first cross arms 100 are placed horizontally and the ends of the two first cross arms 100 correspond to each other, and the first connecting assembly 200 is placed above the end fittings 140 corresponding to the ends of the two first cross arms 100, so that the two groups of second mounting holes on the first connecting assembly 200 are aligned with the fourth connecting holes 1421 on the two end fittings 140 respectively, and fastening members such as bolts and nuts are inserted into the corresponding second mounting holes and fourth connecting holes 1421 and fastened, so as to connect the end fittings 140 corresponding to the two first cross arms 100 on the same first connecting assembly 200, so that the ends corresponding to the two first cross arms 100 are connected together, then the two U-shaped hanging rings are connected in the two third mounting holes respectively, and the two first wire clamps 11 are connected to the two U-shaped hanging rings respectively, so that the assembly of the ends corresponding to the two first cross arms 100 is completed, and finally the other ends corresponding to the two first cross arms 100 are also connected together by the above-mentioned manner, and the fastening of the U-shaped hanging rings and the first wire clamps 11 can be realized by the fastening members such as bolts and nuts.

[0041] In combination Figure 1 and Figure 4As shown, the bottom sides of the middle fittings 130 corresponding to the two first cross arms 100 are connected together by the second connecting assembly 300 for connecting the second line clamp 12 to fix the middle phase jumper. The second connecting assembly 300 is an angle steel piece with an L-shaped cross section, and two groups of fourth mounting holes (not shown in the figure) are arranged on the second connecting assembly 300, each group including two fourth mounting holes, which are arranged corresponding to the two third connecting holes 1321 on the middle fitting 120, so as to connect the middle fittings 130 corresponding to the two first cross arms 100 together through the second connecting assembly 300; a fifth mounting hole (not shown in the figure) is arranged at the middle of the second connecting assembly 300 for connecting the second line clamp 12 through a U-shaped hanging ring or the like, i.e., the second line clamp 12 is connected to the bottom side of the middle of the second connecting assembly 300. The specific installation process is similar to that of the first connecting assembly 200, and thus will not be described herein again.

[0042] The composite cross arm 10 fixes the first cross arm 100 on the electric pole 20 through the connecting fitting 120, and connects the two first cross arms 100 together through the first connecting assembly 200 and the second connecting assembly 300 to hang the conductor, i.e., the composite cross arm 10 adopts an assembled structure of double horizontal cross arms, and by selecting different specifications of the first connecting assembly 200 and the second connecting assembly 300, the composite cross arm 10 can be applied to more specifications of electric poles 20, and the installation is more flexible and has stronger versatility.

[0043] In combination Figure 1 and Figure 3 As shown, one end of each of the two strain members 400 is connected to the two connecting fittings 120 through a ball head hanging plate or the like, and the other end of each of the two strain members 400 is connected to the first line clamp 11 through a ball socket hanging plate or the like. During installation, first, the two ball head hanging plates are connected to the second connecting holes 1241 of the two strain connecting portions 124 respectively, then one end of each of the two strain members 400 is connected to the two ball head hanging plates respectively, then the two ball socket hanging plates are connected to the other end of each of the two strain members 400 respectively, and finally, the two first line clamps 11 are connected to the two ball socket hanging plates respectively. The connection and fastening of the above-mentioned assemblies can be realized by fastening members such as bolts and nuts.

[0044] In an embodiment, the strain member 400 can be a strain composite insulator in the prior art, the ball head hanging plate and the ball socket hanging plate can be connecting members matched with the fittings at both ends of the strain composite insulator in the prior art, the first line clamp 11 can be a strain line clamp in the prior art, and the second line clamp 12 can be a suspension line clamp in the prior art. In other embodiments, the strain member can also be a strain fitting in the prior art, and corresponding connecting members can be replaced according to the installation requirements, and the first line clamp and the second line clamp can also adopt other line clamp structures as long as the corresponding line hanging function can be realized, which will not be limited herein.

[0045] Further, as shown inFigure 6 As shown, the composite cross arm 10 further comprises an insulating protective cover 500, the insulating protective cover 500 comprising a first protective cover 510 and a second protective cover 520, the first protective cover 510 being used to cover the metal structure on the top of the pole 20 and the upper side of the middle part of the composite cross arm 10, and the second protective cover 520 being used to cover the metal structure on the lower side of the middle part of the composite cross arm 10, the first protective cover 510 and the second protective cover 520 cooperating to cover the metal structure on the top of the pole 20 and the middle part of the composite cross arm 10, so as to strengthen the insulation effect of the top of the pole 20, further avoid the birds from forming a current loop when taking off, standing or landing on the top of the pole 20 to electrocute the birds, further reduce the probability of the birds being electrocuted to death, and protect the biodiversity.

[0046] The main structure of the insulating protective cover 500 is a long rectangular box structure with an open bottom, facilitating the installation of the insulating protective cover 500; and the insulating protective cover 500 is provided with a plurality of cavities for passing the partial structure or fasteners such as bolts and nuts of the composite cross arm 10.

[0047] The main structure of the first protective cover 510 is a long rectangular box structure with an open bottom, after the composite cross arm 10 is installed on the pole 20, the distance between the top of the pole 20 and the bottom side of the first sleeve 121 is defined as the first installation height of the first cross arm 100, the height of the long rectangular box structure in the vertical direction matches the installation height of the first cross arm 100; the distance between the sides of the two first sleeves 121 away from each other is defined as the installation width of the first cross arm 100, the width of the long rectangular box structure in the wire extension direction matches the installation width of the first cross arm 100; the length of the pole 20 along the length direction of the first cross arm 100 is defined as the length of the pole 20, the length of the long rectangular box structure along the length direction of the first cross arm 100 matches the length of the pole 20, so that the first protective cover 510 can cover the top of the pole 20 from top to bottom while saving material cost.

[0048] The first protective cover 510 is provided with a plurality of first cavities, four second cavities and two third cavities (not shown in the figure), the plurality of first cavities are correspondingly arranged with the first installation holes on the pole 20, the four second cavities are correspondingly arranged with the installation positions of the first cross arm 100, and the two third cavities are correspondingly arranged with the installation positions of the strain member 400, so as to facilitate the passing of the fasteners and the installation of the composite cross arm 10 while ensuring the insulation effect.

[0049] Further, the third protective cover 530 is arranged outside the second cavity of the first protective cover 510, and the extending direction of the third protective cover 530 is the same as the length direction of the first cross arm 100, which is used to cover the metal structure of the connecting hardware 120 protruding along the length direction of the first cross arm 100 to the electric pole 20; the fourth protective cover 540 is arranged outside the third cavity of the first protective cover 510, and the extending direction of the fourth protective cover 540 is the same as the length direction of the strain member 400, which is used to cover the metal connecting structure between the strain member 400 and the connecting hardware 120, and the main body structure of the third protective cover 530 and the fourth protective cover 540 is also a cuboid structure, and the size of the cuboid is matched with the size of the metal structure covered by the cuboid.

[0050] The main body structure of the second protective cover 520 is a cuboid structure with the bottom and the upper part being open, the length and the width of the cuboid structure are the same as the main body structure of the first protective cover 510, the distance between the bottom side of the first sleeve 121 and the bottom end of the target covering area on the electric pole 20 is defined as the second installation height of the first cross arm 100, and the height of the cuboid in the vertical direction is matched with the second installation height of the first cross arm 100; the second protective cover 520 is provided with a plurality of fourth cavities, and the plurality of fourth cavities are arranged corresponding to the first installation hole on the electric pole 20, which can facilitate the arrangement of the fastener while ensuring the insulation effect.

[0051] Further, the second protective cover 520 can include two sub-protective covers 521, and the two sub-protective covers 521 are cuboid structures with three open sides, and the two sub-protective covers 521 can form the second protective cover 520 after being spliced, so that the second protective cover 520 can be installed and covered from both sides of the electric pole 20, which is more simple and convenient to operate.

[0052] Further, the top of the first protective cover 510 is a pointed top structure, that is, the top of the main body structure of the first protective cover 510, the third protective cover 530 and the fourth protective cover 540 is a pointed top structure, and the pointed end of the pointed top structure is arranged upward, so that when the first protective cover 510 is installed, the pointed top structure can avoid birds standing and staying on the top of the electric pole 20 and the middle part of the composite cross arm 10, further reducing the probability of bird electrocution and protecting biodiversity. The pointed top structure can be a circular cone or a pyramid structure, which is simple in structure and convenient to manufacture.

[0053] Further, the insulation protective cover 500 further includes a fastener protective cover 550, which is used to cover the nuts and other fasteners that need to be arranged during the installation of the composite cross arm 10 and the electric pole 20, further improving the coverage rate of the metal structure on the top of the electric pole 20 and the middle part of the composite cross arm 10, thereby further enhancing the insulation effect of the top of the electric pole 20.

[0054] The insulating protective cover 500 is made of silicone rubber, which has excellent insulation performance and can ensure the insulation effect of the insulating protective cover 500. Alternatively, the insulating protective cover 500 can also be made of other insulating materials, which is not limited herein.

[0055] In the embodiment, the insulating protective cover 500 is of a split structure, that is, the first protective cover 510 and the two sub-protective covers 521 are respectively manufactured and installed. In other embodiments, the insulating protective cover can also be of a one-piece structure, as long as it can be installed on the top of the electric pole to achieve the insulation function, which is not limited herein.

[0056] The technical content and technical features of the present application have been disclosed above. However, it can be understood that, under the creative idea of the present application, those skilled in the art can make various changes and improvements to the above structure and material, including the combination of the technical features disclosed or claimed herein, and obviously including other combinations of these features. These modifications and / or combinations all fall within the technical field to which the present application relates, and fall within the protection scope of the claims of the present application.

Claims

1. An insulating protective cover for covering the top of a pole and the metal structure in the middle of a composite crossarm, wherein the composite crossarm is fixed to the pole and comprises two first crossarms, each of which comprises a connecting fitting, and a tension member is connected to the connecting fitting, characterized in that: The insulating protective cover includes a first protective cover and a second protective cover. The first protective cover is used to cover the top of the pole and the metal structure on the upper middle side of the composite crossarm. The second protective cover is used to cover the metal structure on the lower middle side of the composite crossarm. The top of the first protective cover is a pointed roof structure.

2. The insulating protective cover according to claim 1, wherein: The main structure of the first protective cover is a rectangular structure with an open bottom. The height of the rectangular structure in the vertical direction matches the first installation height of the first cross arm, the width of the rectangular structure along the extension direction of the wire matches the installation width of the first cross arm, and the length of the rectangular structure along the length direction of the first cross arm matches the length of the pole.

3. The insulating protective cover according to claim 1, wherein: The first protective cover is provided with several first cavities, four second cavities and two third cavities. Several of the first cavities are arranged corresponding to the first mounting holes on the pole, the four second cavities are arranged corresponding to the installation positions of the first crossarm, and the two third cavities are arranged corresponding to the installation positions of the tension members.

4. The insulating protective cover according to claim 3, wherein: A third protective cover is extended outside the second cavity of the first protective cover. The extension direction of the third protective cover is the same as the length direction of the first cross arm, and is used to cover the metal structure of the connecting hardware protruding from the pole along the length direction.

5. The insulating protective cover according to claim 3, wherein: A fourth protective cover is extended outside the third cavity of the first protective cover. The extension direction of the fourth protective cover is the same as the length direction of the tension member, and is used to cover the metal connection structure between the tension member and the connecting hardware.

6. The insulating protective cover according to claim 1, wherein: The main structure of the second protective cover is a rectangular structure with openings at the bottom and top. The length and width of the rectangular structure are the same as those of the first protective cover, and the height of the rectangular structure in the vertical direction matches the second installation height of the first cross arm.

7. The insulating protective cover according to claim 1, wherein: The second protective cover is provided with a plurality of fourth cavities, and the plurality of fourth cavities are arranged corresponding to the first mounting holes on the pole.

8. The insulating protective cover according to claim 1, wherein: The second protective cover includes two sub-protective covers, and the two sub-protective covers are rectangular parallelepiped structures with openings on three sides. The two sub-protective covers are assembled to form the second protective cover.

9. The insulating protective cover according to claim 1, wherein: The insulating protective cover also includes a fastener protective cover for covering fasteners that need to be inserted during the installation process of the composite crossarm.

10. The insulating protective cover according to claim 1, wherein: The insulating protective cover is made of silicone rubber.

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