CN113921207B

CN113921207B - Insulation protection assembly

Info

Publication number: CN113921207B
Application number: CN202111251857.7A
Authority: CN
Inventors: 罗日腾; 谭庆先
Original assignee: Guangdong Power Grid Co Ltd; Meizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Meizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2023-11-07
Anticipated expiration: 2041-10-25
Also published as: CN113921207A

Abstract

The invention belongs to the technical field of power cables, and discloses an insulation protection assembly. The insulating sheath comprises a sleeve made of insulating materials, a cavity is formed in the sleeve, a sleeve opening communicated with the cavity is formed in the sleeve, and the sleeve opening is used for enabling the power cable to enter and exit the cavity; the insulating rod comprises a rod body made of insulating materials and an insulating head connected with the rod body, a supporting groove is formed in the insulating head, and the inner surface of the supporting groove can be attached to the outer surface of the sleeve to push the sleeve to move through the insulating rod. The sleeve can be driven to move along the opening direction of the sleeve or move along the opposite direction of the opening direction of the sleeve through the supporting groove so as to be mounted on the electric cable.

Description

Insulation protection assembly

Technical Field

The invention relates to the technical field of power cables, in particular to an insulation protection assembly.

Background

Overhead cables are power transmission cables for transmitting electric energy by fixing power transmission wires on towers standing on the ground, and are widely used because of the advantages of convenient maintenance and low cost, but overhead cables are susceptible to external influences and require regular maintenance, such as removal of trees and foreign matters near the cables.

The power overhead cables or equipment which are frequently used at present are not insulating materials, and maintenance engineers are dangerous when carrying out daily operation and maintenance operations. There are also electric overhead cables using insulated overhead wires which have a certain insulation performance, but after long-term use, the insulation layer is easily aged, resulting in a reduction in insulation performance, and there is still a risk in performing routine maintenance work. In order to ensure personal safety and equipment safety of maintenance engineers, power failure is often required, and long power failure time can be caused by overlong daily maintenance time, so that power supply reliability is affected.

In order to avoid power failure maintenance, the influence on other users on the same cable is reduced as much as possible, the prior art provides a detachable insulating sheath, protection to the power transmission cable is achieved through the insulating sheath, and in addition, the lug parts protruding to the pipe body are arranged at the insulating sheath pipe body and the joint, so that closing protection can be provided for the opening of the insulating sheath, and meanwhile, a safe distance between the insulating sheath and the opening is provided for operators when the operators touch the insulating sheath. However, even if the ear is arranged, only one pipe body is arranged between an operator and the power transmission cable during loading and unloading operations, and once the insulating material of the pipe body is damaged, the insulating sheath cannot guarantee the safe disassembly of the operator; in addition, the ear is not suitable too big to avoid making the power cable bearing too much, avoid the ear to occupy the space too big in order to influence the power failure maintenance operation simultaneously.

Therefore, an insulation protection assembly is needed to solve the above-mentioned problems.

Disclosure of Invention

The invention provides an insulation protection assembly which is used for installing an insulation sheath under the condition that an overhead cable is electrified so as to protect personal safety of a maintenance engineer and is convenient to detach after the use is completed.

In order to achieve the above purpose, the invention adopts the following technical scheme:

an insulation protection assembly, comprising:

an insulating sheath comprising a sleeve made of an insulating material, the sleeve having a cavity therein, the sleeve being provided with a sleeve opening in communication with the cavity, the sleeve opening being for an electrical cable to enter and exit the cavity;

the insulation rod comprises a rod body made of an insulation material and an insulation head connected with the rod body, wherein a supporting groove is formed in the insulation head, and the inner surface of the supporting groove can be attached to the outer surface of the sleeve so as to push the sleeve to move through the insulation rod.

As an optimal scheme of insulating protection component, insulating protection component still includes grafting subassembly, and above-mentioned grafting subassembly is including setting up in telescopic inserted sheet above-mentioned, still is provided with the slot on the above-mentioned insulating head, and above-mentioned slot and above-mentioned supporting slot intercommunication, above-mentioned inserted sheet can peg graft in above-mentioned slot.

As an optimal scheme of insulating protection subassembly, above-mentioned grafting subassembly includes two above-mentioned inserted sheets, and two above-mentioned inserted sheets distribute in above-mentioned sleeve both sides, and above-mentioned insulating head is provided with two slots, and two above-mentioned inserted sheets can peg graft in two above-mentioned slots simultaneously.

As a preferable mode of the insulation protection assembly, the plug assembly is provided in plurality, and the plug assemblies are arranged at intervals along the length direction of the sleeve.

As a preferable mode of the insulation protection assembly, the insulation rod further comprises a connecting piece connected to the rod body, and the connecting piece is detachably connected with the insulation head.

As a preferable mode of the insulation protection assembly, the insulation rod further comprises a first elastic member, and the first elastic member is connected between the connecting member and the rod body.

As a preferable mode of the insulation protection assembly, the rod body comprises a plurality of pipe joints, the pipe joints are sequentially connected in a sliding mode, and the first elastic piece is connected to the innermost pipe joint.

As a preferred scheme of insulating protection subassembly, above-mentioned insulating sheath still includes two magnetism and inhale the piece, and two above-mentioned magnetism inhale the piece and have first end and second end respectively, and two above-mentioned first ends rotate and connect in above-mentioned sleeve, can close above-mentioned sleeve opening when two above-mentioned magnetism inhale the piece, and two above-mentioned magnetism inhale the piece position of actuation and be located between two above-mentioned first ends and two above-mentioned second ends, and two above-mentioned second end interval sets up.

As a preferable scheme of the insulation protection assembly, two second elastic pieces are arranged at the opening of the sleeve, the distance between the two second elastic pieces is smaller than the diameter of the electric power cable, and the width of the opening of the sleeve is larger than the diameter of the electric power cable.

As a preferable mode of the insulating protection component, the insulating sheath comprises a plurality of sleeves, and the sleeves are sequentially and slidably sleeved.

The beneficial effects of the invention are as follows:

through setting up the sleeve of making by insulating material to pass through the cavity in the opening business turn over sleeve with the power cable, make the sleeve cover locate the power cable, can carry out circuit maintenance operation under the circumstances of not having a power failure. In addition, through set up the supporting groove on the insulating head of insulating rod, the internal surface in supporting groove can laminate with telescopic surface, makes supporting groove and sleeve mutually support, can drive sleeve motion through the supporting groove. Can make supporting groove drive sleeve remove in order to establish the sleeve cover on electric power cable along sleeve opening direction to outside the formation insulating layer of electric power cable, make things convenient for electric power maintainer to maintain the operation.

Drawings

FIG. 1 is a schematic illustration of an insulation jacket according to an embodiment of the present invention;

fig. 2 is a schematic front view of an insulating sheath according to an embodiment of the present invention;

FIG. 3 is a schematic view showing an insulation rod according to a first embodiment of the present invention;

FIG. 4 is a schematic view showing another structure of an insulating rod according to the first embodiment of the present invention;

fig. 5 is a schematic cross-sectional view of an insulating sheath taken along line A-A in fig. 2 in accordance with a first embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of the insulating sheath along line A-A in fig. 2 in accordance with a second embodiment of the present invention.

In the figure:

1. an insulating sheath; 11. a sleeve; 111. a sleeve opening; 12. a plug assembly; 121. inserting sheets; 13. a magnetic attraction piece; 131. a first end; 132. a second end; 14. an elastic protrusion;

2. an insulating rod; 21. a rod body; 211. a pipe section; 22. an insulating head; 221. a support groove; 222. a slot; 23. a connecting piece; 24. a first elastic member.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Example 1

Fig. 1 shows a schematic illustration of an insulation sheath 1 according to an embodiment of the invention; fig. 2 shows a schematic front view of an insulating sheath 1 in an embodiment of the invention. Referring to fig. 1-2, an embodiment of the present invention provides an insulation protection assembly for installing an insulation sheath 1 under the condition of electrification of an overhead cable to protect personal safety of a maintenance engineer, and for detaching the insulation sheath 1 after the installation and use are completed, which can be used in the technical field of power cables. Generally, the power cable needs to be arranged overhead to form a power overhead cable, so the insulation protection assembly is generally used for the power overhead cable and is also suitable for other power cables.

Fig. 3 shows a schematic structural view of an insulating rod 2 according to a first embodiment of the present invention. Referring to fig. 1-3, an insulation protection assembly includes an insulation sheath 1 and an insulation rod 2. The insulating sheath 1 includes a sleeve 11 made of an insulating material, and the insulating rod 2 includes a rod body 21 made of an insulating material and an insulating head 22 connected to the rod body 21. Both the sleeve 11 and the rod 21 are made of hard insulating materials, and can be made by coating insulating paint or insulating glue on the surface of a metal material, including epoxy resin glue or epoxy polyester glue, and the like, and can also be directly made of materials such as glass, ceramic, and the like. The insulating head 22 should be made of a soft insulating material such as rubber, plastic material, and fiber product. Alternatively, the sleeve 11 is made of a heat resistant material, since the sleeve 11 directly contacts the electric cable.

With continued reference to fig. 1-3, the sleeve 11 has a cavity inside, the sleeve 11 being provided with a sleeve opening 111 communicating with the cavity, the sleeve opening 111 being for the power cable to enter and exit the cavity. Through the cavity that gets into the sleeve with the power cable through the opening, make the sleeve cover locate the power cable, can carry out circuit maintenance operation under the circumstances of not having a power failure. The insulating head 22 is provided with a support groove 221, and an inner surface of the support groove 221 can be fitted with an outer surface of the sleeve 11 to push the sleeve 11 to move by the insulating rod 2. The support groove can be made to drive the sleeve to move along the sleeve opening direction so as to sleeve the sleeve on the electric power cable, and the installation of the electric power cable and the sleeve 11 is completed. In addition, because the insulating rod 2 is used for installing the insulating sheath 1, the insulating sheath 1 is prevented from being directly operated by power maintenance personnel, the operation safety is improved, and the threat to the personal safety of the power maintenance personnel caused by the failure of the insulating material due to the aging or water inflow of the insulating sheath 1 can be effectively avoided.

Fig. 4 shows another schematic structure of the insulating rod 2 in the first embodiment of the present invention. Referring to fig. 1, 2 and 4, the insulation protection assembly further includes a plug assembly 12, the plug assembly 12 includes a plug 121 disposed on the sleeve 11, the insulation head 22 is further provided with a slot 222, the slot 222 is communicated with the supporting slot 221, and the plug 121 can be plugged into the slot 222. On the basis that the inner surface of the supporting groove 221 is attached to the outer surface of the sleeve 11 to push the sleeve 11 to move, the inserting groove 222 is arranged, so that the inserting piece 121 on the sleeve 11 is inserted into the inserting groove 222 to pull the sleeve 11 to move.

In this embodiment, the direction of the sleeve opening 111 is the first direction and the opposite direction of the first direction is the second direction. Alternatively, the opening of the supporting groove 221 is oriented in the first direction, the supporting groove 221 can push the sleeve 11 to move along the first direction, and when the sleeve 11 needs to be driven to move along the first direction to mount the insulating sheath 1 on the electric cable, the supporting groove 221 can be used to push the sleeve 11 to move; when the sleeve 11 needs to be driven to move along the second direction to detach the insulating sheath 1 from the electric cable, the inserting piece 121 can be inserted into the inserting groove 222, and the sleeve 11 is pulled to move along the second direction. Specifically, after the sleeve 11 is mounted on the horizontally erected power cable, the first direction is the vertical direction, that is, when the sleeve 11 is sleeved on the power cable, the sleeve opening 111 is vertical upwards, so that power maintenance personnel can conveniently stand below the power cable to operate the insulating rod 2. Optionally, the slot 222 is opposite to the opening direction of the supporting slot 221, so as to facilitate the power maintenance personnel standing under the power cable to complete the operation of removing the insulating sheath 1.

With continued reference to fig. 1-4, the plugging assembly 12 includes two plugging sheets 121, the two plugging sheets 121 are distributed on two sides of the sleeve 11, the insulating head 22 is provided with two slots 222, and the two plugging sheets 121 can be plugged into the two slots 222 at the same time. By arranging the two slots 222 and the two inserting pieces 121, the two ends are stressed simultaneously when the sleeve 11 is assembled and disassembled, so that the assembling and disassembling process is stable and convenient to operate. Alternatively, the two inserting pieces 121 are symmetrically distributed with respect to the sleeve opening 111, and the two inserting slots 222 are symmetrically distributed with respect to the rod body 21, so that the electric power maintainer can stably assemble and disassemble the sleeve 11 only by moving the rod body 21 along the first direction or the reverse direction of the first direction during use.

With continued reference to fig. 1-4, the plug assembly 12 is provided in a plurality of numbers, with the plurality of plug assemblies 12 being spaced apart along the length of the sleeve 11. When the length of the sleeve 11 is longer, through setting up a plurality of grafting subassembly 12, when installing and dismantling sleeve 11, can use supporting groove 221 to promote sleeve 11 motion in proper order from sleeve 11 one end, perhaps peg graft inserted sheet 121 in the different grafting subassembly 12 in slot 222 in proper order, pulling sleeve 11 motion, convenient operation.

With continued reference to fig. 1-4, the insulating sheath 1 includes a plurality of sleeves 11, the plurality of sleeves 11 being slidably sleeved in sequence. By providing a plurality of sleeves 11, the overall length of the insulating sheath 1 is made adjustable to accommodate power cables of different lengths.

With continued reference to fig. 3-4, the insulating rod 2 further includes a connector 23 connected to the rod body 21, the connector 23 being detachably connected to the insulating head 22, thereby facilitating replacement of a different insulating head 22 of the insulating rod 2. During actual maintenance operation, only one rod body 21 and one connecting piece 23 are needed to be equipped, meanwhile, insulation heads 22 with different structures are needed to be equipped, and the insulation heads 22 are needed to be disassembled and replaced according to actual operation. Alternatively, when the mounting operation of the sleeve 11 is required, the insulating head 22 shown in fig. 3 or fig. 4 is assembled, that is, the insulating head 22 including only one support groove 221 is provided; when the sleeve 11 is required to be removed, the insulating head 22 shown in fig. 4 is assembled, and the insulating head 22 is further provided with two slots 222 on the basis of the insulating head 22. The insulation sheath 1 and the insulation head 22 with different sizes can be provided according to the power cables with different sizes, and in use, the corresponding insulation head 22 is only required to be replaced according to the insulation sheath 1 with different sizes, and the whole insulation rod 2 is not required to be replaced. In addition, when one insulating head 22 loses an insulating effect due to flooding or the like, replacement of the insulating head 22 is facilitated.

With continued reference to fig. 3-4, when the insulating rod 2 is used, since the supporting groove 221 of the insulating head 22 needs to be attached to the surface of the sleeve 11, or the slot 222 needs to be inserted into the inserting piece 121, when the insulating rod 2 is used to push or pull the sleeve 11, the sleeve 11 and the cable need to be accurately aligned, and during the operation of the operator, the force application direction of the operator and the assembly direction of the sleeve 11 and the power cable are inevitably offset, and in addition, the situation of excessive force is also caused, which can affect the assembly and disassembly operation. To solve the above problem, the insulating rod 2 further includes a first elastic member 24, where the first elastic member 24 is connected to the connecting member 23 and the rod body 21. By providing the first elastic member 24, providing a buffer when pushing or pulling the sleeve 11 using the insulating rod 2, the direction of application of force by the operator and the direction of assembly of the sleeve 11 with the power cable can be allowed to deviate to some extent.

With continued reference to fig. 3-4, the rod 21 includes a plurality of tube segments 211, the plurality of tube segments 211 being slidably inserted in sequence, and the first resilient member 24 being coupled to the innermost tube segment 211. The length of the rod body 21 can be adjusted through the arrangement of the multi-section pipe joint 211 so as to adapt to the use requirements of different working conditions. As an alternative, the rod 21 may be configured as an electric push rod or a cylinder, etc. to facilitate the adjustment of the length of the rod 21.

Fig. 5 shows a schematic cross-sectional view of the insulating sheath along line A-A in fig. 2 in accordance with a first embodiment of the present invention. Referring to fig. 1, 2 and 5, the insulating sheath 1 further includes two magnetic attraction pieces 13, the two magnetic attraction pieces 13 respectively have a first end 131 and a second end 132, the two first ends 131 are rotatably connected to the sleeve 11, when the two magnetic attraction pieces 13 attract, the sleeve opening 111 can be closed, the attraction positions of the two magnetic attraction pieces 13 are located between the two first ends 131 and the two second ends 132, and the two second ends 132 are arranged at intervals. Alternatively, the attraction of the two magnetic attraction pieces 13 is opposite in magnetism, so that in the stationary state, the two magnetic attraction pieces 13 can be attracted. When the sleeve 11 is mounted or dismounted to the electric cable, the electric cable overcomes the magnetic force of the two magnetic attraction pieces 13 to separate the two magnetic attraction pieces 13 under the driving of external force, and the electric cable enters and exits the inner cavity of the sleeve 11 through the sleeve opening 111 via the two magnetic attraction pieces 13. The two second ends 132 are spaced apart when the two magnetic attraction pieces 13 are attracted, so that the electric cable can be guided into the inner cavity of the sleeve 11 during installation, and the installation is convenient. And because the rotary connection of the two magnetic attraction pieces 13 and the sleeve 11 is respectively located at the first ends 131 of the two magnetic attraction pieces 13, the two first ends 131 are arranged at intervals, and when the electric cable is required to be disassembled, the electric cable can be directly pulled out of the sleeve 11 under the driving of external force without guiding. In this embodiment, the power cable is stationary, and the sleeve 11 is driven to move by the insulating rod 2, specifically, the insulating head 22 drives the sleeve 11 to move. Alternatively, the magnetic attraction piece 13 is only arranged at the sleeve opening 111 between the two inserting pieces 121 of the inserting assembly 12, so that the sleeve 11 is driven by external force to complete the installation or the disassembly operation.

As an alternative structure, the magnetic attraction piece is only provided with one, the magnetic attraction piece comprises a first end and a second end, the first end of the magnetic attraction piece is rotationally connected to the side wall of the sleeve opening 111, the side wall of the other sleeve opening 111 is fixedly provided with a magnetic attraction piece, the magnetic attraction piece can be attracted with the magnetic attraction piece to close the sleeve opening 111, the attraction position of the magnetic attraction piece and the magnetic attraction piece is located between the first end and the second end of the magnetic attraction piece, and the magnetism of the attraction position of the magnetic attraction piece and the magnetic attraction piece is opposite.

The following describes the method of using the embodiment of the present invention in detail with reference to fig. 1 to 5:

firstly, an appropriate insulating head 22 is selected according to actual operation requirements, the insulating head 22 is connected with a connecting piece 23, taking the installation sleeve 11 for a power cable as an example, the insulating head 22 shown in fig. 3 is selected, and the insulating head 22 only comprises one supporting groove 221. The length of the insulating sheath 1 will then be adapted by slidably adjusting the plurality of sleeves 11 by adjusting the plurality of tube sections 211 to adjust the rod 21 to the appropriate length. Then, the sleeve 11 is lifted by using the supporting groove 221, the inner surface of the supporting groove 221 is attached to the outer surface of the sleeve 11, the sleeve 11 is driven to push along the first direction by the supporting groove 221, the electric power cable enters the inner cavity of the sleeve 11 through the sleeve opening 111 against the magnetic force of the two magnetic attraction pieces 13, and the operation is repeated at different positions of the sleeve 11 for a plurality of times until the electric power cable completely enters the inner cavity of the sleeve 11. After the assembly of the insulating sheath 1 with the power cable is completed, the insulating rod 2 is removed.

If it is desired to remove the sleeve 11 from the power cable, the insulating head 22 shown in fig. 4 may be replaced, and the insulating head 22 may comprise a support groove 221, and two slots 222 may be provided in the support groove 221. Similar to the above operation, the difference is that the insulation head 22 is matched with the sleeve 11, and two inserting pieces 121 are respectively inserted into two slots 222, and then the sleeve 11 is pulled to move reversely along the first direction, so that the sleeve 11 is separated from the electric cable.

Example two

Fig. 6 shows a schematic cross-sectional view of the insulating sheath along line A-A in fig. 2 in a second embodiment of the present invention. Referring to fig. 1, 2 and 6, an insulation protection component according to an embodiment of the present invention is different from the insulation protection component according to the first embodiment in that: the specific arrangement at the sleeve opening 111 varies.

The sleeve 11 is not provided with the magnetic attraction piece 13 but is replaced by two second elastic pieces. Specifically, two second elastic pieces are arranged at the sleeve opening 111, the distance between the two second elastic pieces is smaller than the diameter of the electric cable, and the width of the sleeve opening 111 is larger than the diameter of the electric cable.

In this embodiment, the second elastic member is an elastic protrusion 14, when the sleeve 11 needs to be assembled and disassembled on the electric cable, the insulating rod 2 drives the sleeve 11 to move in the first direction or the reverse direction of the first direction, so that the electric cable can enter the sleeve opening 111, and the electric cable can easily enter the sleeve opening 111 because the width of the sleeve opening 111 is larger than the diameter of the electric cable. Continuing to be under the action of the insulating rod 2, the two elastic protrusions 14 are contracted, so that the distance between the two elastic protrusions 14 is the same as the diameter of the electric cable, and the electric cable passes through the space between the two elastic protrusions 14 and enters and exits the inner cavity of the sleeve 11. At the same time, the two elastic bulges 14 are restored, so that the distance between the two elastic bulges 14 is smaller than the diameter of the electric cable, and the electric cable is prevented from falling off from the cavity of the sleeve 11 by oneself.

In other embodiments, the second elastic member may be an elastic clip, where the two elastic clips have a first clip end and a second clip end, the two first clip ends are rotatably connected to the sleeve 11, a position between the two elastic clips, where a distance between the two elastic clips is smaller than a diameter of the power cable and the distance between the two first clip ends and the two second clip ends is the smallest, and the two second clip ends are disposed at intervals. The working principle of the elastic clamping piece is similar to that of the elastic bulge 14, and the elastic clamping piece has the advantage that the electric cable can be guided into the cavity inside the sleeve 11 when the insulating sheath 1 is installed through the interval arrangement of the two second clamping piece ends, so that the installation is convenient.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims

1. An insulation protection assembly, comprising:

insulating sheath (1) comprising a sleeve (11) made of insulating material, the sleeve (11) having a cavity inside, the sleeve (11) being provided with a sleeve opening (111) communicating with the cavity, the sleeve opening (111) being for power cables to enter and exit the cavity;

an insulating rod (2) comprising a rod body (21) made of an insulating material and an insulating head (22) connected with the rod body (21), wherein a supporting groove (221) is formed in the insulating head (22), and the inner surface of the supporting groove (221) can be attached to the outer surface of the sleeve (11) so as to push the sleeve (11) to move through the insulating rod (2);

the insulating rod (2) further comprises a connecting piece (23) connected to the rod body (21), and the connecting piece (23) is detachably connected with the insulating head (22);

the insulating rod (2) further comprises a first elastic piece (24), and the first elastic piece (24) is connected between the connecting piece (23) and the rod body (21);

the insulation protection assembly further comprises an inserting assembly (12), the inserting assembly (12) comprises an inserting sheet (121) arranged on the sleeve (11), a slot (222) is further formed in the insulation head (22), the slot (222) is communicated with the supporting groove (221), and the inserting sheet (121) can be inserted into the slot (222);

the inserting piece (121) is convexly arranged on the outer wall of the sleeve (11);

two second elastic pieces are arranged at the sleeve opening (111), the distance between the two second elastic pieces is smaller than the diameter of the electric cable, and the width of the sleeve opening (111) is larger than the diameter of the electric cable;

the second elastic piece is an elastic bulge (14), and the elastic bulge (14) is convexly arranged on the side wall of the sleeve opening (111);

the plug-in assembly (12) comprises two plug-in sheets (121), the two plug-in sheets (121) are distributed on two sides of the sleeve (11), the insulating head (22) is provided with two slots (222), and the two plug-in sheets (121) can be simultaneously plugged in the two slots (222);

the plug-in components (12) are provided with a plurality of, and a plurality of plug-in components (12) are arranged at intervals along the length direction of the sleeve (11).

2. The insulation protection assembly according to claim 1, wherein the rod body (21) comprises a plurality of pipe sections (211), the pipe sections (211) are sequentially connected in a sliding manner, and the first elastic piece (24) is connected to the innermost pipe section (211).

3. An insulation protection assembly according to claim 1 or 2, characterized in that the insulation sheath (1) comprises a plurality of said sleeves (11), a plurality of said sleeves (11) being in turn slidably sleeved.