AU2019390461B2

AU2019390461B2 - Cross arm assembly and transmission pole

Info

Publication number: AU2019390461B2
Application number: AU2019390461A
Authority: AU
Inventors: Qing Huang; Chao Liu; Bin Ma; Kang Xu; Jie Yu
Original assignee: Jiangsu Shemar Electric Co Ltd
Current assignee: Jiangsu Shemar Electric Co Ltd
Priority date: 2018-11-30
Filing date: 2019-09-29
Publication date: 2022-12-22
Anticipated expiration: 2039-09-29
Also published as: AU2023201739B2; AU2023201739A1; CN109372315A; AU2019390461A1; NZ776464A; BR112021010029A2; WO2020108084A1

Abstract

Disclosed in the present invention are a cross arm assembly and a transmission pole. The cross arm assembly comprises a cross arm and a transition plate; the cross arm comprises a mandrel, a sleeve, insulating layers, and wire fixing terminals; the sleeve is fixedly connected to the middle of the mandrel; the mandrel is coated with the insulating layers; the left and right sides of the sleeve are both provided with the insulating layers; both ends of the mandrel are provided with the wire fixing terminals, respectively; the outer wall of the sleeve is provided with connecting lugs; the cross arm is fixedly connected to the transition plate by means of the connecting lugs. The cross arm assembly of the present invention is simple in structure and easy to install and maintain, and is applicable to a variety of pole bodies.

Description

CROSS ARM ASSEMBLY AND TRANSMISSION POLE FIELD OF THE INVENTION

[0001] The present disclosure belongs to the technical field of power transmission equipment; in particular, the present disclosure relates to a new type of cross arm assembly and transmission pole.

BACKGROUND OF THE INVENTION

[0002] A cross arm is fixedly connected to a transmission pole body in a power transmission line, and is used as a component for supporting wires to ensure that a prescribed safe distance between the wires is maintained. When the cross arm is connected to the pole body, the cross arm is either directly fixed onto the pole body, or connected to the pole body through a connecting plate. When the cross arm is directly connected to the pole body, it is necessary to punch holes into the cross arm, which will affect a load bearing capacity and a service life of the cross arm. When the cross arm is connected through the connecting plate, a variety of accessories are needed to assist the connection, and the fixing of the cross arm and the connecting plate will affect the service life of the cross arm and make it inconvenient to conduct maintenance.

[0003] Existing connecting plates are mostly customized for specific pole bodies, and have no versatility, making it difficult for them to apply to a variety of pole bodies of different models.

SUMMARY OF THE INVENTION

[0004] In order to solve the above problems, the present disclosure proposes a new type of cross arm assembly and transmission pole. The cross arm is connected to the transition plate through connecting lugs, and the transition plate is configured to connect to the pole body. The present disclosure has a simple structure, and is easy to install, which prolongs the service life of the cross arm assembly.

[0005] The present disclosure provides a cross arm assembly, which includes a cross arm and a transition plate;

[0006] the cross arm includes a core rod, a sleeve, insulating layers and wire fixing terminals;

[0007] the sleeve is fixedly connected to a middle portion of the core rod;

[0008] the insulating layers are wrapped around the core rod, and are arranged on both left and right sides of the sleeve;

[0009] the wire fixing terminals are installed on both ends of the core rod respectively; and

[0010] an outer wall of the sleeve is provided with connecting lugs, and the cross arm is fixedly connected to the transition plate through the connecting lugs.

[0011] In the above cross arm assembly, side walls of the transition plate are provided with capture slots; an upper surface and a lower surface of the sleeve are respectively provided with a connecting lug, which are first connecting lugs; the sleeve is installed in the capture slots, and the first connecting lugs are fixedly connected with the side walls of the transition plate.

[0012] As an optional solution of the present disclosure, the first connecting lug and the side wall of the transition plate are connected by a bolt; thefirst connecting lug includes two parallel flanges, and the bolt is installed between the two flanges; a distance between the two flanges is larger than a diameter of an inscribed circle of a nut of the bolt, and is smaller than a diameter of a circumscribed circle of the nut of the bolt.

[0013] As another optional solution, a horizontal upper connecting plate and a horizontal lower connecting plate extend from a front wall of the transition plate; an upper surface and a lower surface of the sleeve are respectively provided with a connecting lug, and these connecting lugs are second connecting lugs; the sleeve is installed between the upper connecting plate and the lower connecting plate, an upper one of the second connecting lugs is fixedly connected to the upper connecting plate, and a lower one of the second connecting lugs is fixedly connected to the lower connecting plate.

[0014] As another optional solution, a front wall of the transition plate is provided with a fixing plate which includes a horizontal portion and a vertical portion; one end of the horizontal portion is connected to the front wall of the transition plate, and the other end of the horizontal portion is connected to the vertical portion; a lower surface of the sleeve is provided with a connecting lug, which is a third connecting lug; the sleeve is installed between the vertical portion and the front wall of the transition plate, and the third connecting lug is fixedly connected to the fixing plate.

[0015] The above cross arm assembly further includes a top-phase cross arm, a top end of the top-phase cross arm is provided with a wire-hanging terminal, and the top-phase cross arm is fixed on an upper surface of the transition plate.

[0016] In the above cross arm assembly, the cross arm further includes a medium phase wire fixing terminal, the insulating layers include a long insulating layer and short insulating layers, the long insulating layer is located on one side of the sleeve, and the multiple short insulating layers are located on the other side of the sleeve; the medium phase wire fixing terminal is located between the adjacent short insulating layers, and is fixed on the core rod by a clip or by pressing.

[0017] In the above cross arm assembly, a back portion of the transition plate is provided with two parallel triangular pads extending in a vertical direction, and the transition plate is provided with an installation hole located between the two triangular pads.

[0018] In the above cross arm assembly, the wire fixing terminal includes a wire hanging portion and a snap-fit portion; the snap-fit portion is provided with an insertion groove which is opened horizontally, and the wire-hanging portion is connected to a top end of the snap-fit portion; an end of the core rod is installed in the insertion groove.

[0019] As an optional solution of the present disclosure, the wire fixing terminal further includes a hanging ring which is located below the wire-hanging portion; specifically, one end of the hanging ring is connected to the wire-hanging portion, and the other end of the hanging ring is connected to the snap-fit portion, or both ends of the hanging ring are connected to the wire-hanging portion.

[0020] As an optional solution of the present disclosure, a cross section of the core rod is rectangular.

[0021] The present disclosure also provides a transmission pole, which includes a pole body and a cross arm assembly fixed on the pole body, and the cross arm assembly is the cross arm assembly described above.

[0022] In the cross arm assembly and the transmission pole of the present disclosure, the core rod of the cross arm penetrates into the sleeve, and the sleeve is connected with the transition plate through the connecting lugs. The structure is simple, the connection is reliable, and the installation is convenient; in case of replacing parts in the cross arm assembly, it is easy to disassemble, assemble and maintain; the connection between the sleeve and the core rod will not cause damage to the core rod, so that the service life of the core rod is prolonged; by providing the triangular pads on the back portion of the transition plate, the versatility of the cross arm assembly is greatly improved, making the cross arm assembly adapt to pole bodies with different cross sections.

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG. 1A is a structural view of a cross arm assembly according to a first embodiment of the present disclosure.

[0024] FIG. 1B is an exploded view of the cross arm assembly according to the first embodiment of the present disclosure.

[0025] FIG. 2 is a structural view of a cross arm in the first embodiment of the present disclosure.

[0026] FIG. 3 is a structural view of a transition plate in thefirst embodiment of the present disclosure.

[0027] FIG. 4 is a schematic view of an installation bolt for a first connecting lug in the first embodiment of the present disclosure.

[0028] FIG. 5 is a structural view of a cross arm assembly according to a second embodiment of the present disclosure.

[0029] FIG. 6 is a structural view of a cross arm assembly according to a third embodiment of the present disclosure.

[0030] FIG. 7 is a structural view of a cross arm in the third embodiment of the present disclosure.

[0031] FIG. 8 is a structural view of a cross arm assembly according to a fourth embodiment of the present disclosure.

[0032] FIG. 9 is a structural view of a cross arm assembly according to a fifth embodiment of the present disclosure.

[0033] FIG. 10 is a structural view of a cross arm in the fifth embodiment of the present disclosure.

[0034] FIG. 11 is a structural view of a cross arm assembly according to a sixth embodiment of the present disclosure.

[0035] FIG. 12 is a structural view of a transmission pole according to an embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENT(S) OF THE INVENTION

[0036] Specific implementations of the present disclosure will be described below in greater detail below with reference to the accompanying drawings and embodiments, so that the solutions of the present disclosure and the advantages of various aspects can be better understood. However, the specific implementations and embodiments described below are for illustrative purposes only, and are not intended to limit the present disclosure.

[0037] Unless clearly specified or defined otherwise, the term "connection" mentioned in the present disclosure should be understood in a broad sense. It may be a direct connection, or an indirect connection implemented through an intermediate medium. In the description of the present disclosure, it should be understood that the orientations or positional relationships indicated by terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom" and the like are based on the orientations or positional relationships shown in the drawings. These terms are used only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be understood as a limitation to the present disclosure.

[0038] Reference is made to FIGS. 1A-I1, embodiments of the present disclosure provide a cross arm assembly. The cross arm assembly includes a cross arm 100 and a transition plate 200. The cross arm 100 is connected to a pole body through the transition plate 200, and is configured to erect wires for power transmission.

[0039] The cross arm 100 includes a core rod 1, a sleeve 2, insulating layers 3 and wire fixing terminals 4. The core rod 1 is elongated. The core rod 1 in this embodiment is made of composite material, such as by impregnating glass fibers with resin followed by extrusion, which can reduce the weight of the cross arm.

[0040] The sleeve 2 is provided with a horizontal through hole, and the core rod 1 passes through the through hole. The sleeve 2 is fixedly connected to the core rod 1 and is located in a middle portion of the core rod 1 so that the core rod 1 can be horizontally arranged. The material of the sleeve 2 is metal, and the core rod 1 and the sleeve 2 can be fixed by pressing or gluing. An outer wall of the sleeve 2 is provided with connecting lugs.

[0041] The insulating layers 3 are wrapped around the core rod 1, and are arranged on both left and right sides of the sleeve 2. The insulating layers 3 cover exposed portions of the core rod 1 to prevent the core rod 1 from being corroded by rainwater. In this embodiment, the insulating layers 3 are made of silicone rubber material having good aging resistance and hydrophobic migration, which can reduce the probability of pollution flashover and rain flashover.

[0042] The wire fixing terminals 4 are installed on both ends of the core rod 1 respectively. The wire fixing terminals 4 are configured to fix wires. The wires can be fixed on the wire fixing terminals 4 through a bundling process, or a gland may also be provided to fix the wires.

[0043] The cross arm 100 is fixedly connected to the transition plate 200 through the connecting lugs. The connecting lugs on the sleeve 2 may be fixedly connected to the transition plate through bolts. The connection between the cross arm 100 and the transition plate 200 is realized through the connecting lugs, thus making the disassembly and assembly convenient. When parts of the cross arm need to be replaced, the maintenance is convenient, and punching holes on the core rod is avoided. If the sleeve 2 and the transition plate 200 are bonded by glue, the strength is insufficient, and the glue may fail in various outdoor environments, which would affect the service life of the cross arm assembly. If the sleeve 2 and the transition plate 200 are fixed by welding, the welding may cause deformation of the sleeve 2 or the transition plate 200, which would damage the core rod 1 inside the sleeve 2 and affect the service life of the core rod 1.

[0044] A more detailed description will be given below by means of the following embodiments.

[0045] First embodiment

[0046] As shown in FIGS. 1A to 4, in the cross arm assembly of this embodiment, two opposite side walls of the transition plate 200 are each provided with a capture slot 201, and an interior of the transition plate 200 is hollow. A connecting hole 202 is respectively provided above and below the capture slot 201.

[0047] An upper surface and a lower surface of the sleeve 2 are respectively provided with connecting lugs, which are first connecting lugs 21. The first connecting lugs 21 are arranged in a left-and-right symmetrical manner on the upper surface and the lower surface of the sleeve 2, and the number of the first connecting lugs 21 is four in total. The first connecting lugs 21 extend upward from the upper surface of the sleeve 2 or extend downward from the lower surface of the sleeve 2. Connecting holes 212 are provided on the first connecting lugs 21. The sleeve 2 is installed in the capture slots 201, and the connecting holes 202 correspond to the connecting holes 212. The first connecting lugs 21 are fixedly connected with the side walls of the transition plate 200 through bolts, and the bolts pass through the connecting holes 202 and the connecting holes 212.

[0048] Optionally, as shown in FIG. 4, when the first connecting lug 21 and the side wall of the transition plate 200 are connected through the bolt, thefirst connecting lug includes two parallel flanges 211, and the bolt is installed between the two flanges 211. A distance B between the two flanges 211 is larger than a diameter d of an inscribed circle of a nut of the bolt, and is smaller than a diameter D of a circumscribed circle of the nut of the bolt. When the bolt is tightened, the two flanges 211 can capture the nut, which facilitates the tightening of the bolt and improves work efficiency.

[0049] Optionally, in this embodiment, the cross arm assembly further includes a top-phase cross arm 300, and a wire-hanging terminal 301 is provided on a top end of the top-phase cross arm 300. The wire-hanging terminal 301 is configured to fix wires. A top portion of the transition plate 200 is provided with connecting holes 204, and the top-phase cross arm 300 is fixed on an upper surface of the transition plate 200 through bolts and the connecting holes 204. By providing the top-phase cross arm 300 on the cross arm assembly, the cross arm assembly can be used for the erection of three-phase power transmission wires.

[0050] As shown in FIG. 3, a back portion of the transition plate 200 is provided with two parallel triangular pads 203. The two triangular pads 203 extend in a vertical direction, and have a triangular cross-section. When the transition plate 200 is installed on the pole body, the triangular pads 203 can support the transition plate 200. There is a gap between the two triangular pads 203, so that the transition plate 200 can be installed on pole bodies of different models. The cross section of the pole body may be either rectangular or circular. By providing the triangular pads 203, the versatility of the cross arm assembly is improved.

[0051] The transition plate 200 is provided with an installation hole 205, and the installation hole 205 is located between the two triangular pads 203. In this embodiment, the installation hole 205 is located on a vertical center line of the transition plate 200, and the installation hole 205 is configured to fix the transition plate 200 to the pole body. Oblique edges on an outer side of the triangular pads 203 are fixedly connected to an edge of a back side of the transition plate 200, so that the structure of the transition plate 200 is simple, and the cost can also be reduced.

[0052] Optionally, the wire fixing terminal 4 includes a snap-fit portion 41 and a wire-hanging portion 42, and the snap-fit portion 41 is provided with an insertion groove 43 which is opened horizontally. An end of the core rod 1 is inserted into the insertion groove 43, and is fixedly connected with the insertion groove 43 by snap-fit, which realizes the connection between the core rod 1 and the wire fixing terminal 4. The wire-hanging portion 42 is connected to a top end of the snap-fit portion 41, and a top portion of the wire-hanging portion 42 is provided with a groove for fixing the wires. The wire-hanging portion of the wire fixing terminal 4 in this embodiment may be solid or hollow, which may be determined according to actual needs during use.

[0053] In this embodiment, the wire fixing terminal 4 further includes a hanging ring 44, which is of an "L" shape. The hanging ring 44 is located below the wire-hanging portion 42. One end of the hanging ring 44 is connected to a lower surface of the wire hanging portion 42, and the other end of the hanging ring 44 is connected to a side wall of the snap-fit portion 41. The hanging ring 44, the snap-fit portion 41 and the wire-hanging portion 42 form a closed ring. When installing wires or repairing lines, the hanging ring 44 may be used for hanging tools, thus making it convenient for workers to operate. In another solution, the hanging ring 44 may be connected to the wire-hanging portion 42 at both ends.

[0054] A cross section of the core rod 1 is rectangular, and the rectangular core rod 1 can avoid unnecessary rotation of the core rod 1 inside the sleeve 2, so the structure is more reliable. Under the condition of the same force, the amount of material used in case of a rectangular section is smaller. The core rod 1 may be solid or hollow, which may be determined according to actual situation.

[0055] Second embodiment

[0056] As shown in FIG. 5, the cross arm assembly of this embodiment is similar in structure to that of thefirst embodiment. This embodiment differs from the first embodiment in that in order to facilitate the erection of three-phase power transmission wires, no top-phase cross arm is used in this embodiment; instead, a medium-phase wire fixing terminal 5 is added. There is a certain distance between the medium-phase wire fixing terminal 5 and the wire fixing terminals 4 to ensure a safe distance between adjacent wires.

[0057] In order to facilitate the installation of the medium-phase wire fixing terminal 5, the insulating layers 3 include a long insulating layer 31 and short insulating layers 32. The long insulating layer 31 is located on one side of the sleeve 2, and the multiple short insulating layers 32 are located on the other side of the sleeve 2. In this embodiment, the number of the short insulating layers 32 is two. The medium-phase wire fixing terminal 5 is located between the adjacent short insulating layers 32, and the medium-phase wire fixing terminal 5 is fixed on the core rod 1 by a clip or by pressing. A top portion of the medium-phase wire fixing terminal 5 is a wire-hanging portion forfixing the wires.

[0058] Third embodiment

[0059] As shown in FIG. 6 and FIG. 7, the cross arm assembly of this embodiment is similar in structure to that of the first embodiment. This embodiment differs from the first embodiment in that a horizontal upper connecting plate 206 and a horizontal lower connecting plate 207 extend from a front wall of the transition plate in this embodiment. A gap is provided between the upper connecting plate 206 and the lower connecting plate 207.

[0060] The upper surface and the lower surface of the sleeve 2 are respectively provided with a connecting lug, and these connecting lugs are second connecting lugs 22. The second connecting lugs 22 are provided with vertical connecting holes 221, and the second connecting lugs 22 are connected to the transition plate through the connecting holes 221. The sleeve 2 is installed between the upper connecting plate 206 and the lower connecting plate 207. An upper one of the second connecting lugs 22 is fixedly connected to the upper connecting plate 206, and a lower one of the second connecting lugs 22 is fixedly connected to the lower connecting plate 207.

[0061] The cross arm assembly of this embodiment has a simpler structure and is easy to install.

[0062] Fourth embodiment

[0063] As shown in FIG. 8, the cross arm assembly of this embodiment is similar in structure to that of the third embodiment. This embodiment differs from the third embodiment in that in order to facilitate the erection of three-phase power transmission wires, no top-phase cross arm is used in this embodiment; instead, a medium-phase wire fixing terminal 5 is added.

[0064] In order to facilitate the installation of the medium-phase wire fixing terminal 5, the insulating layers 3 include a long insulating layer 31 and short insulating layers 32. The long insulating layer 31 is located on one side of the sleeve 2, and the multiple short insulating layers 32 are located on the other side of the sleeve 2. In this embodiment, the number of the short insulating layers 32 is two. The medium-phase wire fixing terminal 5 is located between the adjacent short insulating layers 32, and the medium-phase wire fixing terminal 5 is fixed on the core rod 1 by a clip. A top portion of the medium-phase wire fixing terminal 5 is a wire-hanging portion for fixing the wires.

[0065] Fifth embodiment

[0066] As shown in FIGS. 9 and 10, the cross arm assembly of this embodiment is similar in structure to that of thefirst embodiment. This embodiment differs from the first embodiment in that the front wall of the transition plate in this embodiment is provided with a fixing plate 208. The fixing plate 208 includes a horizontal portion 2081 and a vertical portion 2082. One end of the horizontal portion 2081 is connected to the front wall of the transition plate, and the other end of the horizontal portion 2081 is connected to the vertical portion 2082. An open cavity is formed between the vertical portion 2082 and the front wall of the transition plate. Ribs 2083 may be provided below the vertical portion 2082 to enhance the strength of the fixing plate 208.

[0067] The lower surface of the sleeve 2 is provided with a connecting lug, which is a third connecting lug 23. The third connecting lug 23 is provided with a horizontal connecting hole 231, which is configured to connect with the transition plate. The sleeve 2 is installed between the vertical portion and the front wall of the transition plate, and the third connecting lug 23 is fixedly connected to the fixing plate 208 through a bolt and the connecting hole 231.

[0068] In the cross arm assembly of this embodiment, fewer bolts are used, and the structural strength is higher.

[0069] Sixth embodiment

[0070] As shown in FIG. 11, the cross arm assembly of this embodiment is similar in structure to that of the fifth embodiment. This embodiment differs from the fifth embodiment in that in order to facilitate the erection of three-phase power transmission wires, no top-phase cross arm is used in this embodiment; instead, a medium-phase wire fixing terminal 5 is added.

[0071] In order to facilitate the installation of the medium-phase wire fixing terminal 5, the insulating layers 3 include a long insulating layer 31 and short insulating layers 32. The long insulating layer 31 is located on one side of the sleeve 2, and the multiple short insulating layers 32 are located on the other side of the sleeve 2. In this embodiment, the number of the short insulating layers 32 is two. The medium-phase wire fixing terminal 5 is located between the adjacent short insulating layers 32, and the medium-phase wire fixing terminal 5 is fixed on the core rod 1 by a clip. A top portion of the medium-phase wire fixing terminal 5 is a wire-hanging portion for fixing the wires.

[0072] As shown in FIG. 12, the present disclosure also provides a transmission pole, which includes a pole body 400 and a cross arm assembly fixed on the pole body. The cross arm assembly is installed on the pole body 400 through bolts, and is used for erecting of the wires. The cross arm assembly in FIG. 12 is the cross arm assembly of the first embodiment. The cross arm assemblies of the second to sixth embodiments may also be installed on the pole body 400. The cross arm assembly of the present disclosure is highly versatile, and the cross section of the pole body 400 may be rectangular, circular, or other shapes.

[0073] It should be noted that the various embodiments described above with reference to the accompanying drawings are only used to illustrate the present disclosure, and not to limit the scope of the present disclosure. It should be understood by those skilled in the art that modifications or equivalent replacements made to the present disclosure without departing from the spirit and scope of the present disclosure should all fall within the scope of the present disclosure. In addition, unless indicated otherwise in the context, words appearing in the singular form also include the plural form, and vice versa. In addition, unless specified otherwise, the whole or part of any embodiment can be used in combination with the whole or part of any other embodiment.

Claims

What is claimed is: 1. A cross arm assembly, characterized in that, the cross arm assembly comprises a cross arm and a transition plate, wherein

the cross arm comprises a core rod, a sleeve, insulating layers and wire fixing terminals; the sleeve is fixedly connected to a middle portion of the core rod; the insulating layers are wrapped around the core rod, and are arranged on both left and right sides of the sleeve; the wire fixing terminals are installed on both ends of the core rod respectively; an outer wall of the sleeve is provided with connecting lugs, and the cross arm is fixedly connected to the transition plate through the connecting lugs; side walls of the transition plate are provided with capture slots; an upper surface and a lower surface of the sleeve are respectively provided with connecting lugs, which are first connecting lugs; and the sleeve is installed in the capture slots, and the first connecting lugs are fixedly connected with the side walls of the transition plate.
2. The cross arm assembly according to claim 1, wherein the first connecting lug and the side wall of the transition plate are connected by a bolt; the first connecting lug comprises two parallel flanges, and the bolt is installed between the two flanges; a distance between the two flanges is larger than a diameter of an inscribed circle of a nut of the bolt, and is smaller than a diameter of a circumscribed circle of the nut of the bolt.
3. The cross arm assembly according to claim 1, further comprising a top-phase cross arm, wherein a top end of the top-phase cross arm is provided with a wire-hanging terminal, and the top-phase cross arm is fixed on an upper surface of the transition plate.
4. The cross arm assembly according to claim 1, wherein the cross arm further comprises a medium-phase wire fixing terminal, the insulating layers comprise a long insulating layer and short insulating layers, the long insulating layer is located on one side of the sleeve, and the multiple short insulating layers are located on the other side of the sleeve; and the medium-phase wire fixing terminal is located between the adjacent short insulating layers, andis fixed on the core rod.
5. The cross arm assembly according to claim 1, wherein a back portion of the transition plate is provided with two parallel triangular pads extending in a vertical direction, and the transition plate is provided with an installation hole located between the two triangular pads.
6. The cross arm assembly according to claim 1, wherein the wire fixing terminal comprises a wire-hanging portion and a snap-fit portion; the snap-fit portion is provided with an insertion groove which is opened horizontally, and the wire-hanging portion is connected to a top end of the snap-fit portion; and an end of the core rod is installed in the insertion groove.
7. The cross arm assembly according to claim 6, wherein the wire fixing terminal further comprises a hanging ring which is located below the wire-hanging portion.
8. The cross arm assembly according to claim 1, wherein a cross section of the core rod is rectangular.
9. A transmission pole, comprising a pole body and a cross arm assembly fixed on the pole body, characterized in that, the cross arm assembly is the cross arm assembly according to any one of claims 1 to 8.

FIGURES

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