CN211313577U - Composite insulating cross arm - Google Patents

Abstract

The utility model provides a compound insulating cross arm, this compound insulating cross arm includes: the insulating core body is of a solid body structure formed by surrounding three side surfaces; the outer sleeve is arranged outside the insulating core body in a wrapping mode; the first connecting mechanism is arranged at the end part of the insulating core body and is used for being connected with the conducting wire; and the second connecting mechanism is arranged on the insulating core body and used for detachably connecting the insulating core body and the electric pole. The utility model discloses in, insulating core encloses synthetic solid body structure for three side, make insulating core can bear vertical load and unbalanced longitudinal tension etc, increase compound insulation horizontal pole bears the tensile ability of vertical unbalance, and then make compound insulation horizontal pole can be applied to the tension rod, and improved cross-section utilization ratio, the at utmost has reduced the quality of insulating core, make insulating core can be connected with the wire through first coupling mechanism and second coupling mechanism, and with pole relatively fixed, compound insulation cross arm's stability has been guaranteed, the safe operation.

Description

Composite insulating cross arm

Technical Field

The utility model relates to a distribution equipment technical field particularly, relates to a compound insulation cross arm.

Background

The composite insulating cross arm generally comprises an insulating core body, an outer sleeve and an end hardware fitting fixed on the insulating core body, can effectively improve the lightning protection performance of a 10kV distribution line and reduce the lightning trip-out rate of the line, and is widely applied to the transmission line. At present, the composite insulating cross arm is mostly used for a straight pole and mainly bears vertical load, but the influence of unbalanced longitudinal tension such as line breakage is not considered in the design of the composite insulating cross arm, so that the composite insulating cross arm cannot be safely applied to a tension withstanding pole.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a compound insulating cross arm aims at solving the problem that compound insulating cross arm can't be applied to the tension rod safely among the prior art.

The utility model provides a compound insulation cross arm, compound insulation cross arm includes: the insulating core body is of a solid body structure formed by surrounding three side surfaces; the outer sleeve is arranged outside the insulating core body in a wrapping mode; the first connecting mechanism is arranged at the end part of the insulating core body and is used for being connected with the conducting wire; and the second connecting mechanism is arranged on the insulating core body and used for detachably connecting the insulating core body and the electric pole.

Furthermore, in the composite insulating cross arm, the cross section of the insulating core body is triangular or isosceles triangle; and/or at least one side surface of the insulating core is arc-shaped; and/or at least one side surface of the insulating core is inwards sunken; and/or the corners of the insulation core are in smooth transition.

Furthermore, in the composite insulating cross arm, the length of the bottom side of the cross section triangle of the insulating core body is 30-180 mm; and/or the height of the insulating core body is 20 mm-90 mm.

Further, in the above-mentioned composite insulation cross arm, the overcoat includes: the sheath is wrapped outside the insulating core; and the umbrella skirts are arranged on the sheath at intervals.

Further, in the composite insulating cross arm, the first connecting mechanism is disposed at the first end of the insulating core, and the second connecting mechanism is disposed at the second end of the insulating core.

Further, in the composite insulating cross arm, the first connecting mechanism includes: the section of the first connecting sleeve is matched with that of the insulating core body, and the first connecting sleeve is sleeved and connected to the first end of the insulating core body; the first connecting plate is connected to the first connecting sleeve, and a connecting hole is formed in the first connecting plate.

Further, in the composite insulating cross arm, the second connecting mechanism includes: the section of the second connecting sleeve is matched with that of the insulating core body, and the second connecting sleeve is sleeved and connected to the second end of the insulating core body; the first flange plate is arranged on the second connecting sleeve; the second flange plate is connected with the first flange plate through a flange; and the fastening piece is arranged on the second flange plate and fastened on the outer part of the electric pole.

Furthermore, in the composite insulating cross arm, two first connecting mechanisms are provided, the two first connecting mechanisms are respectively provided at two end portions of the insulating core body in a one-to-one correspondence manner, and the second connecting mechanism is provided at a middle portion of the insulating core body.

Further, in the above composite insulating cross arm, each of the first connecting mechanisms includes: the section of the third connecting sleeve is matched with that of the insulating core body, and the third connecting sleeve is sleeved and connected to the corresponding end part of the insulating core body; and the second connecting plate is connected to the third connecting sleeve, and the second connecting plate is provided with a connecting hole.

Further, in the composite insulating cross arm, the second connecting mechanism includes: the section of the fourth connecting sleeve is matched with that of the insulating core body, and the fourth connecting sleeve is sleeved and connected to the middle part of the insulating core body; and the limiting plate is arranged on the fourth connecting sleeve and is used for being arranged above the composite insulator and being clamped with the limiting part on the composite insulator.

Furthermore, in the composite insulating cross arm, at least one limiting groove is formed in one side, facing the composite insulator, of the limiting plate, and each limiting groove is formed by a groove formed in the limiting plate and a concave portion formed in the bottom wall of the groove; the limiting parts on the composite insulator are at least one, and the limiting parts are embedded in the limiting grooves in a one-to-one correspondence mode.

The utility model discloses in, insulating core encloses synthetic solid body structure for three side, make insulating core can bear vertical load and unbalanced longitudinal tension etc, increase compound insulation horizontal pole bears the tensile ability of vertical unbalance, and then make compound insulation horizontal pole can be applied to the tension rod, and the cross-section utilization ratio has been improved, the at utmost has reduced the quality of insulating core, make insulating core can be connected with the wire through first coupling mechanism and second coupling mechanism, and with pole relatively fixed, compound insulation cross arm's stability has been guaranteed, the safe operation, the problem of tension rod can't be applied to safely to compound insulation cross arm among the prior art has been solved.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural view of a composite insulating cross arm according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure view of an insulating core in the composite insulating cross arm provided by the embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of an insulating core in the composite insulating cross arm according to the embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of an insulating core in the composite insulating cross arm according to the embodiment of the present invention;

fig. 5 is a schematic cross-sectional view of an insulating core in the composite insulating cross arm according to the embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first connecting mechanism in the composite insulating cross arm according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a second connecting mechanism in the composite insulating cross arm according to the embodiment of the present invention;

fig. 8 is a schematic structural diagram of the composite insulating cross arm according to the embodiment of the present invention during assembly;

fig. 9 is a schematic structural diagram of a composite insulating cross arm according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a second connecting mechanism in the composite insulating cross arm according to the embodiment of the present invention;

fig. 11 is a schematic structural view of a second connecting mechanism in the composite insulating cross arm according to the embodiment of the present invention;

fig. 12 is a schematic structural diagram of the composite insulating cross arm according to the embodiment of the present invention during assembly.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1 to 12, preferred structures of the composite insulating cross arm according to embodiments of the present invention are shown. As shown, the composite insulating cross arm includes: the insulating core body 1, the outer sleeve 2, the first connecting mechanism 3 and the second connecting mechanism 4. The insulating core body 1 is a solid body structure formed by surrounding three side faces to adapt to the stress characteristic of the tension-resistant rod, and not only bears vertical load, but also considers the influence of unbalanced longitudinal tension such as line breakage and the like.

Specifically, the cross section of the insulating core 1 may be a triangle or an isosceles triangle, so as to increase the longitudinal bending section coefficient, improve the cross section utilization rate, and reduce the quality of the insulating core 1. Preferably, the cross section of the insulating core 1 is isosceles triangle.

Preferably, at least one side of the insulating core 1 is curved. Preferably, at least one side of the insulating core 1 is recessed inwardly. The specific shape can be seen in fig. 3, 4 and 5, wherein fig. 3 is a heart shape formed when two side surfaces of the insulating core 1 are arc-shaped and the other side surface is inwardly depressed. Fig. 5 shows the insulating core 1 with one of its side faces recessed inwardly.

Referring to fig. 2, it is preferable that the length L of the base of the triangular cross-section of the insulating core 1 is 30mm to 180mm, and/or the height H of the insulating core 1 is 20mm to 90 mm. In specific implementation, the length L and the height H of the base of the triangle of the cross section of the insulating core 1 may also be determined according to actual situations, and this embodiment does not limit this.

Referring to fig. 2, the corners of the insulating core 1 are preferably smooth transitions, and particularly, the corners of the insulating core 1 are rounded. In specific implementation, the diameter of the fillet may be determined according to actual conditions, and this embodiment does not limit this. In this embodiment, the diameter of the fillet is 35 mm. In this way, the insulating core 1 can be made smoother.

More preferably, the cross section of the insulating core 1 is triangular or isosceles triangle; and/or at least one side surface of the insulating core body 1 is arc-shaped; and/or at least one side surface of the insulating core 1 is recessed inwards; and/or the corners of the insulating core 1 are smoothly transited.

In specific implementation, the insulating core 1 is made of fiber reinforced resin material and integrally formed through a pultrusion process.

The outside of insulating core 1 is located in the package of overcoat 2, specifically, overcoat 2 includes: a sheath 21 and a plurality of sheds 22. The sheath 21 is wrapped outside the insulating core 1, and the plurality of sheds 22 are provided on the outer wall of the sheath 21 at intervals along the longitudinal direction of the insulating core 1. More specifically, the sheath 21 is fixed to the outer surface of the insulating core 1 by bonding with a coupling agent, and the sheath 21 may be a composite material such as silicone rubber excellent in weather resistance. Preferably, the sheds 22 are evenly distributed on the outer wall of the sheath 21.

The first connecting mechanism 3 is disposed at an end of the insulating core 1, and the first connecting mechanism 3 is used for connecting with a wire. The second connecting mechanism 4 is arranged on the insulating core body 1, and the second connecting mechanism 4 is used for detachably connecting the insulating core body 1 with the electric pole 5 so as to be convenient to mount and dismount.

It can be seen that, in this embodiment, the insulating core 1 is a solid structure formed by enclosing three sides, so that the insulating core 1 can bear vertical load, unbalanced longitudinal tension and the like, the capability of the composite insulating cross bar for bearing longitudinal unbalanced tension is increased, and further, the composite insulating cross bar can be applied to the tension rod, the cross-section utilization rate is improved, the quality of the insulating core 1 is reduced to the greatest extent, the insulating core 1 can be connected with a wire through the first connecting mechanism 3 and the second connecting mechanism 4, and is relatively fixed with the electric pole 5, the stable and safe operation of the composite insulating cross arm is ensured, and the problem that the composite insulating cross arm cannot be safely applied to the tension rod in the prior art is solved.

Referring to fig. 1, 6 to 8, in the above embodiment, the first connecting mechanism 3 is disposed at the first end of the insulating core 1, and the second connecting mechanism 4 is disposed at the second end of the insulating core 1. Specifically, a first end of the insulating core 1 is connected with a wire, and a second end of the insulating core 1 is connected with the pole 5.

Referring to fig. 1 and 6, the first connection mechanism 3 may include: a first connecting sleeve 31 and a first connecting plate 32. The cross section of the first connecting sleeve 31 is matched with the cross section of the insulating core 1, the first connecting sleeve 31 is sleeved outside the first end of the insulating core 1, and the first connecting sleeve 31 is connected with the first end of the insulating core 1. Specifically, the first connecting sleeve 31 is connected to the first end of the insulating core 1 by crimping and gluing after being sleeved outside the first end of the insulating core 1, so that the first connecting sleeve 31 and the first end of the insulating core 1 are relatively fixed.

In specific implementation, the first connecting sleeve 31 has a preset length, and the preset length can be determined according to practical situations, and the embodiment does not limit the preset length.

The first connecting plate 32 is connected to the first connecting sleeve 31, and the first connecting plate 32 is opened with a connecting hole 321, wherein the connecting hole 321 is used for connecting with a wire or a hardware fitting. The number of the connection holes 321 may be at least two, and in a specific implementation, the number of the connection holes 321 may be determined according to an actual situation, which is not limited in this embodiment. The coupling holes 321 are uniformly distributed on the first coupling plate 32.

It can be seen that, in the present embodiment, the first connecting mechanism 3 has a simple structure and is convenient to implement.

Referring to fig. 1, 7 and 8, in the above embodiment, the second connecting mechanism 4 may include: a second connecting sleeve 41, a first flange 42, a second flange 43 and a fastening member 44. The cross section of the second connection sleeve 41 is matched with the cross section of the insulating core 1, the second connection sleeve 41 is sleeved outside the second end of the insulating core 1, and the second connection sleeve 41 is connected with the second end of the insulating core 1. Specifically, the second connection sleeve 41 is connected to the second end of the insulating core 1 by crimping and gluing after being sleeved outside the second end of the insulating core 1, so that the second connection sleeve 41 and the second end of the insulating core 1 are relatively fixed.

In a specific implementation, the second connection sleeve 41 has a preset length, and the preset length can be determined according to actual conditions, and the embodiment does not limit this.

The first flange 42 is provided on the second connecting sleeve 41, and the second flange 43 is flange-connected to the first flange 42. The fastening member 44 is provided to the second flange 43, and the fastening member 44 is fastened to the outside of the pole 5. Specifically, the second end of the insulating core 1 is provided with a second connecting sleeve 41, the exterior of the pole 5 is provided with a fastening member 44, and the second connecting sleeve 41 and the fastening member 44 are flange-connected by a first flange 42 and a second flange 43.

Preferably, the fastener 44 is a hoop. Specifically, referring to fig. 7 and 8, the anchor ear includes: the first hoop body and the second hoop body, the first hoop body is connected with the second flange 43, the first hoop body is wound on the outside of the electric pole 5, the second hoop body is also wound on the outside of the electric pole 5, the first hoop body and the second hoop body are in butt joint and are in bolt connection, so that the electric pole 5 is sleeved on the outside, and the electric pole 5 and the insulating core 1 are relatively fixed.

In specific implementation, referring to fig. 8, two composite insulating cross arms are provided, the two composite insulating cross arms are respectively provided on two opposite sides of the electric pole 5, and the second connecting mechanisms 4 in the two composite insulating cross arms are connected with the electric pole 5. Specifically, when the fastening member 44 is a hoop, the hoop of the second connecting mechanism 4 in one of the composite insulating cross arms is a first hoop body, and the hoop of the second connecting mechanism 4 in the other composite insulating cross arm is a second hoop body, so that when the two composite insulating cross arms are oppositely arranged, the first hoop body and the second hoop body are butted and bolted to fasten the electric pole 5 between the first hoop body and the second hoop body.

It can be seen that, in this embodiment, the second connecting mechanism 4 has a simple structure, is convenient to implement, and can ensure that the electric pole 5 and the insulating core 1 are relatively fixed, and the electric pole 5 and the insulating core 1 are detachably connected through the fastener 44 and the flange plate, so that the electric pole is convenient to mount and dismount.

Referring to fig. 9 to 12, in the above embodiment, there are two first connecting mechanisms 3, two first connecting mechanisms 3 are respectively disposed at two end portions of the insulating core 1 in a one-to-one correspondence manner, and the second connecting mechanism 4 is disposed at a middle portion of the insulating core 1. Specifically, two ends of the insulating core 1 are respectively connected with the conducting wire through two first connecting mechanisms 3, and the middle part of the insulating core 1 is relatively fixed with the electric pole 5.

Each first connection mechanism 3 may include: a third connecting sleeve and a second connecting plate. The cross section of the third connecting sleeve is matched with the cross section of the insulating core body 1, the third connecting sleeve is sleeved outside the corresponding end part of the insulating core body 1, and the third connecting sleeve is connected with the corresponding end part of the insulating core body 1. Specifically, the third connecting sleeve is connected to the end of the insulating core 1 by crimping and gluing after being sleeved outside the end of the insulating core 1, so that the third connecting sleeve is relatively fixed to the end of the insulating core 1.

In specific implementation, the structures of the third connecting sleeve and the second connecting plate are the same as those of the first connecting sleeve and the first connecting plate, and the structure is shown in fig. 6.

In specific implementation, the third connecting sleeve has a preset length, and the preset length can be determined according to actual conditions, which is not limited in this embodiment.

The second connecting plate is connected to the third connecting sleeve, and the second connecting plate is provided with a connecting hole which is used for being connected with a lead or a hardware fitting. The number of the connecting holes may be at least two, and in specific implementation, the number of the connecting holes may be determined according to actual conditions, which is not limited in this embodiment. The connecting holes are uniformly distributed on the second connecting plate.

It can be seen that, in this embodiment, the third connecting mechanism has a simple structure and is easy to implement.

Referring to fig. 9 to 12, in each of the above embodiments, the second connection mechanism 4 may include: a fourth connect bush 45 and a stopper plate 46. The cross section of the fourth connecting sleeve 45 is matched with the cross section of the insulating core 1, the fourth connecting sleeve 45 is sleeved outside the middle part of the insulating core 1, and the fourth connecting sleeve 45 is connected with the middle part of the insulating core 1. In particular, the central portion of the insulating core 1 is no longer provided with the outer jacket 2, i.e. the insulating core 1 is no longer provided with the outer jacket 2 at a position corresponding to the fourth connecting sleeve 45. The fourth connecting sleeve 45 is connected to the insulating core 1 by crimping and gluing after being sleeved outside the middle portion of the insulating core 1, so that the fourth connecting sleeve 45 and the insulating core 1 are relatively fixed.

The limiting plate 46 is disposed on the fourth connecting sleeve 45, the limiting plate 46 is disposed above the composite insulator 6, and the limiting plate 46 is clamped to the limiting member on the composite insulator 6. Specifically, the composite insulator 6 and the electric pole 5 are connected by a connection fitting, the limit plate 46 is provided on a side of the fourth connecting sleeve 45 facing the composite insulator 6 (a lower side shown in fig. 12), and the limit plate 46 is placed above the connection fitting between the composite insulator 6 and the electric pole 5 (with respect to fig. 12). The limiting part is arranged on the connecting hardware fitting between the composite insulator 6 and the electric pole 5, and the limiting part is clamped with the limiting plate 46, so that the fourth connecting sleeve 45 is relatively fixed with the electric pole 5, namely, the insulating core body 1 is relatively fixed with the electric pole 5.

Preferably, at least one limiting groove 461 is formed on one side of the limiting plate 46 facing the composite insulator 6, wherein each limiting groove 461 is formed by a groove 4611 formed on the limiting plate 46 and a concave portion 4612 formed on the bottom wall of the groove 4611. Specifically, the stopper plate 46 is a solid body having a rectangular parallelepiped shape, the recess 4611 is recessed from the top (upper portion shown in fig. 11) to the bottom (lower portion shown in fig. 11) of the stopper plate 46, the top (upper portion shown in fig. 11) of the recess 4611 is an open end, and the bottom wall of the recess 4611 is opposed to the open end of the recess 4611. The recessed portion 4612 is recessed from the bottom wall of the groove 4611 to the bottom of the limiting plate 46, and the width of the recessed portion 4612 (the left-to-right direction in fig. 11 is the width direction) is greater than the width of the groove 4611 (the left-to-right direction in fig. 11 is the width direction), so that the cross section of the groove 4611 and the recessed portion 4612 is "T" shaped.

At least one limiting piece is arranged on the composite insulator 6, and the limiting pieces are embedded in the limiting grooves 461 in a one-to-one correspondence manner. In particular, the limiting member may be a bolt. In practical applications, the length of each of the limiting grooves 461 may be matched with the length of the bolt. Thus, the limiting piece on the composite insulator 6 is blocked by the limiting plate 46 in the concave portion 4612, so that the limiting piece is effectively prevented from being separated from the limiting plate 46, the limiting piece is clamped with the limiting plate 46, the insulating core 1 and the electric pole 5 are ensured to be relatively fixed, and the composite insulator is simple in structure and convenient to implement.

In specific implementation, the number of the limiting slots 461 and the number of the limiting pieces can be determined according to actual situations, and this embodiment does not limit this. In this embodiment, referring to fig. 11, there are two limiting grooves 461, and the two limiting grooves 461 are respectively disposed on two opposite sides of the limiting plate 46 in the length direction. Correspondingly, there are two limiting members, and the positions of the two limiting members correspond to the positions of the two limiting grooves 461.

It can be seen that, in this embodiment, the second connecting mechanism 4 is simple in structure and convenient to implement, can ensure the relative fixation between the electric pole 5 and the insulating core 1, and can also realize the detachable connection between the electric pole 5 and the insulating core 1, and is convenient to install and detach.

In summary, in this embodiment, the insulating core 1 is a solid structure surrounded by three sides, so that the insulating core 1 can bear vertical load, unbalanced longitudinal tension and the like, the capability of the composite insulating cross bar to bear longitudinally unbalanced tension is increased, the composite insulating cross bar can be applied to a tension rod, the cross-section utilization rate is improved, the quality of the insulating core 1 is reduced to the greatest extent, the insulating core 1 can be connected with a wire through the first connecting mechanism 3 and the second connecting mechanism 4, and is relatively fixed to the electric pole 5, and stable and safe operation of the composite insulating cross arm is ensured.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (11)

1. A composite insulating cross arm, comprising:

the insulating core body (1) is of a solid body structure enclosed by three side faces;

the outer sleeve (2) is arranged outside the insulating core body (1) in a wrapping mode;

the first connecting mechanism (3) is arranged at the end part of the insulating core body (1) and is used for being connected with a lead;

and the second connecting mechanism (4) is arranged on the insulating core body (1) and is used for detachably connecting the insulating core body (1) and the electric pole (5).

2. The composite insulating cross arm of claim 1,

the section of the insulating core body (1) is triangular or isosceles triangular; and/or the presence of a gas in the gas,

at least one side surface of the insulation core body (1) is arc-shaped; and/or the presence of a gas in the gas,

at least one side surface of the insulation core body (1) is inwards sunken; and/or the presence of a gas in the gas,

the corners of the insulating core body (1) are in smooth transition.

3. The composite insulating cross arm of claim 2,

the length of the bottom side of the cross section triangle of the insulating core body (1) is 30-180 mm; and/or the presence of a gas in the gas,

the height of the insulating core body (1) is 20 mm-90 mm.

4. Composite insulating crossarm according to claim 1, characterized in that said jacket (2) comprises:

a sheath (21) which is wrapped outside the insulating core (1);

and a plurality of sheds (22) which are arranged at intervals on the sheath (21).

5. The composite insulating cross arm according to claim 1, characterized in that the first connecting means (3) is provided at a first end of the insulating core (1) and the second connecting means (4) is provided at a second end of the insulating core (1).

6. Composite insulating cross arm according to claim 5, characterized in that said first connection means (3) comprise:

the section of the first connecting sleeve (31) is matched with that of the insulating core body (1), and the first connecting sleeve (31) is sleeved and connected to the first end of the insulating core body (1);

the first connecting plate (32) is connected to the first connecting sleeve (31), and a connecting hole (321) is formed in the first connecting plate (32).

7. Composite insulating cross arm according to claim 5, characterized in that said second connection means (4) comprise:

the section of the second connecting sleeve (41) is matched with that of the insulating core body (1), and the second connecting sleeve (41) is sleeved and connected to the second end of the insulating core body (1);

a first flange (42) provided to the second connection sleeve (41);

a second flange (43) which is flange-connected to the first flange (42);

and the fastening piece (44) is arranged on the second flange plate (43) and fastened to the outer part of the electric pole (5).

8. The composite insulating cross arm according to claim 1, wherein the number of the first connecting mechanisms (3) is two, the two first connecting mechanisms (3) are respectively arranged at two end parts of the insulating core body (1) in a one-to-one correspondence manner, and the second connecting mechanism (4) is arranged at a middle part of the insulating core body (1).

9. Composite insulating cross-arm according to claim 8, characterized in that each of said first connection means (3) comprises:

the section of the third connecting sleeve is matched with that of the insulating core body (1), and the third connecting sleeve is sleeved and connected to the corresponding end part of the insulating core body (1);

and the second connecting plate is connected to the third connecting sleeve, and is provided with a connecting hole.

10. Composite insulating cross arm according to claim 8, characterized in that the second connection means (4) comprise:

the section of the fourth connecting sleeve (45) is matched with that of the insulating core body (1), and the fourth connecting sleeve (45) is sleeved and connected to the middle part of the insulating core body (1);

and the limiting plate (46) is arranged on the fourth connecting sleeve (45) and is used for being arranged above the composite insulator (6) and being clamped with the limiting part on the composite insulator (6).

11. The composite insulating cross arm of claim 10,

one side, facing the composite insulator (6), of the limiting plate (46) is provided with at least one limiting groove (461), and each limiting groove (461) is formed by a groove (4611) formed in the limiting plate (46) and a concave part (4612) formed in the bottom wall of the groove (4611);

the number of the limiting pieces on the composite insulator (6) is at least one, and the limiting pieces are embedded in the limiting grooves (461) in a one-to-one correspondence mode.

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