Mounting tool and mounting method

Abstract

The embodiment of the invention provides an installation tool and an installation method, and relates to the technical field of wire protection. The moving seat is provided with a mounting channel, the mounting channel extends around the wire, the two ends of the mounting channel in the moving direction of the moving seat are of opening structures, and the mounting channel is used for penetrating through the insulating sheath, so that the outer edge side edge and the inner edge side edge of the insulating sheath are distributed on the two sides of the wire; the limiting piece is arranged at the tail end, in the moving direction, of the moving base, and the limiting piece is used for being supported on the inner side of the inner edge side edge; and a glue storage cavity for filling a sealant is formed in the moving seat, and is used for automatically smearing the sealant on the inner surface of the side edge of the inner edge. According to the mounting tool and the mounting method provided by the embodiment of the invention, the problems of relatively low construction efficiency and high operation difficulty during wire protection in the prior art are solved.

Description

Technical Field

[0001] The present application relates to the technical field of wire protection, and in particular to an installation tool and an installation method. Background Art

[0002] The exposed wires in overhead lines may discharge after coming into contact with birds, metal wires or buildings, thus causing line failure.

[0003] In the related art, an insulating sheath is often used to protect exposed wires. The insulating sheath is made of elastic insulating material and has a curled cross-section to construct an outer edge side located on the outside of the insulating sheath and an inner edge side located on the inside of the insulating sheath. During installation, the staff gradually manually wraps the insulating sheath around the wire and turns the inner edge side outward so that the inner edge side is pressed against the outer surface of the outer edge side.

[0004] However, the construction efficiency of protecting the wires in the above manner is low and the operation is difficult. Summary of the invention

[0005] The embodiments of the present application provide an installation tool and an installation method to solve the problems of low construction efficiency and great operating difficulty when protecting wires in the prior art.

[0006] In a first aspect, an embodiment of the present application provides an installation tool, comprising:

[0007] A moving seat, the moving seat is used to move along the extension direction of the wire;

[0008] The movable seat has a mounting channel, the mounting channel extends around the wire, the mounting channel is open at both ends of the movable seat in the moving direction, and the mounting channel is used to pass the insulating sheath so that the outer edge side and the inner edge side of the insulating sheath are distributed on both sides of the wire;

[0009] A limiting member, the limiting member is arranged at the end of the movable seat along the moving direction, and the limiting member is used to support the inner side of the inner edge side, so that after the movable seat moves relative to the wire and the insulating sheath, the outer edge side and the inner edge side are successively rolled toward the wire;

[0010] The movable seat is provided with a glue storage cavity for filling the sealant, and the glue storage cavity is used to automatically apply the sealant to the inner surface of the inner edge side.

[0011] In a possible implementation, the installation channel includes a first channel and a second channel that are interconnected, the first channel and the second channel are located on opposite sides of the wire, the first channel is used to accommodate the outer edge side, and the second channel is used to accommodate the inner edge side.

[0012] In a possible implementation, a glue storage cavity for filling sealant is provided on the movable seat, the glue storage cavity is connected to the second channel, and the glue storage cavity is located on the side wall of the second channel opposite to the inner surface of the inner edge side.

[0013] In a possible implementation manner, the limiting member includes a baffle, the baffle is connected to the movable seat, and the baffle is correspondingly arranged at an inner edge of the second channel.

[0014] In a possible implementation manner, the movable seat is provided with a receiving groove for receiving the wire, and the installation channel is arranged around the receiving groove.

[0015] In a possible implementation manner, the front end of the movable seat along the moving direction is provided with an expansion head, and the end of the expansion head away from the movable seat is provided with an arc-shaped portion;

[0016] The expansion head is configured to gradually expand a portion of the insulating sheath located in front of the moving seat when the moving seat moves relative to the wire and the insulating sheath.

[0017] In a possible implementation manner, the movable seat is provided with a traction portion, so as to control the movement of the movable seat through the traction portion.

[0018] In a possible embodiment, the glue storage cavity has an open structure at one end facing the second channel, the opening of the glue storage cavity is covered with a cover plate, and one end of the cover plate is set with a gap between it and the opening edge of the glue storage cavity to form a glue outlet hole.

[0019] In a possible implementation manner, the bottom surface of the glue storage cavity extends obliquely downward toward one end of the glue outlet hole.

[0020] In a second aspect, an embodiment of the present application provides an installation method, using the installation tool described in any of the above embodiments, characterized in that it includes the following steps:

[0021] Unfold one end of the insulating sheath and insert it into the installation channel on the movable seat in the installation tool;

[0022] The movable seat is placed close to the conductor so that the outer edge side and the inner edge side of the end of the insulating sheath are located on both sides of the conductor respectively;

[0023] Move the movable seat along the conductor, and the insulating sheath will gradually self-roll when it is gradually inserted into the rear of the movable seat. Under the action of the limiting part in the installation tool, the inner edge side will lag behind the rolling of the outer edge side, so that the inner edge side can tightly abut the outer surface of the outer edge side, thereby completing the installation of the insulating sheath.

[0024] The embodiment of the present application provides an installation tool and an installation method, wherein the installation tool includes: a moving seat, the moving seat is used to move along the extension direction of the wire; the moving seat has an installation channel, the installation channel extends around the wire, the installation channel is open at both ends of the moving direction of the moving seat, and the installation channel is used to pass the insulating sheath so that the outer edge side and the inner edge side of the insulating sheath are distributed on both sides of the wire; a limiting member, the limiting member is arranged at the end of the moving seat along the moving direction, and the limiting member is used to support the inner side of the inner edge side, so that after the moving seat moves relative to the wire and the insulating sheath, the outer edge side and the inner edge side are successively rolled toward the wire; a glue storage cavity for filling sealant is opened on the moving seat, and the glue storage cavity is used to automatically apply the sealant to the inner surface of the inner edge side. Therefore, during installation, it is only necessary to move the moving seat close to the wire, and at the same time, unfold one end of the insulating sheath and insert it into the installation channel, so that the outer edge side and the inner edge side of the end of the insulating sheath are respectively located on both sides of the wire. Secondly, the movable seat is moved along the conductor, during which the movable seat moves relative to the insulating sheath at the same time, and the insulating sheath gradually passes through the part behind the movable seat and gradually self-rolls, so that the insulating sheath is wrapped around the conductor. During the self-rolling process, under the action of the limiting member, the rolling of the inner edge side of the same section of the insulating sheath will lag behind the rolling of the outer edge side, that is, the outer edge side and the inner edge side are rolled toward the conductor successively, so that the inner edge side can be tightly abutted against the outer surface of the outer edge side, thereby completing the installation of the insulating sheath, making the entire installation process more convenient, solving the problems of low construction efficiency and high difficulty in operation when protecting the conductor in the prior art; and the sealant in the glue storage cavity will bond the outer edge side and the inner edge side to each other, thereby further increasing the stability of the insulating sheath after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0026] Figure 1 It is a schematic diagram of the structure of an insulating sheath in the prior art;

[0027] Figure 2 A schematic diagram of the structure of an installation tool provided in an embodiment of the present application from a first perspective;

[0028] Figure 3 A schematic diagram of the structure of a second viewing angle of an installation tool provided in an embodiment of the present application;

[0029] Figure 4 A schematic diagram of the partial explosion structure of an installation tool provided in an embodiment of the present application.

[0030] Description of reference numerals:

[0031] 10-sheath body; 11-outer edge side; 12-inner edge side;

[0032] 100-movable seat; 110-accommodating slot;

[0033] 200-installation channel; 210-first channel; 220-second channel;

[0034] 300-limited parts;

[0035] 400- expansion head; 410- arc portion;

[0036] 500-glue storage chamber; 510-cover plate; 520-glue outlet hole;

[0037] 600-Traction unit.

[0038] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0039] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0040] In the related technology, an insulating sheath is often used to protect the exposed wires, such as Figure 1 As shown, the insulating sheath includes a sheath body 10, which is made of elastic insulating material and has a curled cross-section to construct an outer edge side 11 located on the outside of the insulating sheath and an inner edge side 12 located on the inside of the insulating sheath; during installation, the staff gradually manually wraps the insulating sheath around the wire, turns the inner edge side 12 outward, and presses the inner edge side 12 against the outer surface of the outer edge side 11.

[0041] However, when the wire is protected by the above method, the inner edge side 12 of each part needs to be manually turned outward in sequence along the length direction of the insulating sheath, so that the construction efficiency of the insulating sheath installation is low and the operation is difficult.

[0042] Therefore, the embodiment of the present application provides an installation tool and an installation method, wherein the installation tool includes: a moving seat, the moving seat is used to move along the extension direction of the wire; the moving seat has an installation channel, the installation channel extends around the wire, the installation channel is open at both ends of the moving direction of the moving seat, and the installation channel is used to pass the insulating sheath so that the outer edge side and the inner edge side of the insulating sheath are distributed on both sides of the wire; a limiting member, the limiting member is arranged at the end of the moving seat along the moving direction, and the limiting member is used to support the inner side of the inner edge side, so that after the moving seat moves relative to the wire and the insulating sheath, the outer edge side and the inner edge side are successively rolled toward the wire; a glue storage cavity for filling the sealant is opened on the moving seat, and the glue storage cavity is used to automatically apply the sealant to the inner surface of the inner edge side. Therefore, during installation, it is only necessary to move the moving seat close to the wire, and at the same time, unfold one end of the insulating sheath and insert it into the installation channel, so that the outer edge side and the inner edge side of the end of the insulating sheath are respectively located on both sides of the wire. Secondly, the movable seat is moved along the conductor, during which the movable seat moves relative to the insulating sheath at the same time, and the insulating sheath gradually passes through the part behind the movable seat and gradually self-rolls, so that the insulating sheath is wrapped around the conductor. During the self-rolling process, under the action of the limiting member, the rolling of the inner edge side of the same section of the insulating sheath will lag behind the rolling of the outer edge side, that is, the outer edge side and the inner edge side are rolled toward the conductor successively, so that the inner edge side can be tightly abutted against the outer surface of the outer edge side, thereby completing the installation of the insulating sheath, making the entire installation process more convenient, solving the problems of low construction efficiency and high difficulty in operation when protecting the conductor in the prior art; and the sealant in the glue storage cavity will bond the outer edge side and the inner edge side to each other, thereby further increasing the stability of the insulating sheath after installation.

[0043] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0044] like Figure 2 As shown, an embodiment of the present application provides an installation tool, including:

[0045] A moving seat 100, the moving seat 100 is used to move along the extension direction of the wire;

[0046] The movable seat 100 has an installation channel 200, which extends around the wire. The installation channel 200 is open at both ends of the movable seat 100 in the moving direction. The installation channel 200 is used to pass the insulating sheath so that the outer edge side 11 and the inner edge side 12 of the insulating sheath are distributed on both sides of the wire.

[0047] The limiting member 300 is arranged at the end of the movable seat 100 along the moving direction. The limiting member 300 is used to be supported on the inner side of the inner edge side 12 so that after the movable seat 100 moves relative to the wire and the insulating sheath, the outer edge side 11 and the inner edge side 12 are successively rolled toward the wire.

[0048] During installation, it is only necessary to move the movable seat 100 close to the wire, unfold one end of the insulating sheath and insert it into the installation channel 200, so that the outer edge side 11 and the inner edge side 12 of the insulating sheath are respectively located on both sides of the wire. Next, the movable seat 100 is moved along the wire, during which the movable seat 100 moves relative to the insulating sheath, and the insulating sheath gradually self-rolls when it gradually passes to the rear of the movable seat 100, so that the insulating sheath is wrapped around the wire.

[0049] During the self-rolling process, under the action of the limiting member 300, the rolling of the inner edge side 12 of the same section of the insulating sheath will lag behind the rolling of the outer edge side 11, that is, the outer edge side 11 and the inner edge side 12 are rolled toward the wire successively, so that the inner edge side 12 can be tightly abutted against the outer surface of the outer edge side 11, thereby completing the installation of the insulating sheath, making the entire installation process more convenient, and solving the problems of low construction efficiency and high operation difficulty when protecting the wire in the prior art; and, the sealant in the glue storage cavity 500 will bond the outer edge side 11 and the inner edge side 12 to each other, thereby further increasing the stability of the insulating sheath after installation.

[0050] like Figure 2 and Figure 3 As shown, in some embodiments, the movable seat 100 is provided with a receiving groove 110 for receiving the wire, and the installation channel 200 is arranged around the receiving groove 110 .

[0051] The installation channel 200 includes a first channel 210 and a second channel 220 that are interconnected. The first channel 210 and the second channel 220 are located on opposite sides of the wire. The first channel 210 is used to accommodate the outer edge side 11 , and the second channel 220 is used to accommodate the inner edge side 12 .

[0052] Specifically, the accommodating groove 110 is opened in the middle of the movable seat 100, and the upper end of the accommodating groove 110 and the two ends along the moving direction of the movable seat 100 are both open structures, so that when the movable seat 100 approaches the wire and moves relative to the wire, the wire can be in the accommodating groove 110, ensuring that the insulating sheath can be more stably wrapped around the wire.

[0053] The overall profile of the installation channel 200 is a U-shaped structure and extends around the receiving groove 110. It can be understood that the installation channel 200 includes a first channel 210 and a second channel 220 that are interconnected, and the first channel 210 and the second channel 220 are located on both sides of the receiving groove 110.

[0054] At this time, the limiting member 300 is disposed on a side of the receiving groove 110 facing the second passage 220 .

[0055] When the insulating sheath passes through the installation channel 200, the outer edge side 11 will be located in the first channel 210, and the inner edge side 12 will be located in the second channel 220, so that the insulating sheath is unfolded at the position corresponding to the movable seat 100. When the movable seat 100 approaches the wire, the wire will be located inside the insulating sheath. Finally, it is only necessary to pull the movable seat 100 to move relative to the wire and the insulating sheath at the same time.

[0056] In some embodiments, the limiting member 300 includes a baffle, which is connected to the moving base 100 and is disposed correspondingly at the inner edge of the second channel 220 .

[0057] In this embodiment, the baffle is integrally formed with the movable seat 100 . Of course, the baffle can also be connected to the movable seat 100 by welding or other methods. The baffle is located between the receiving groove 110 and the second channel 220 , and extends toward the rear end of the movable seat 100 .

[0058] During the installation process, the insulating sheath passes through the rear part of the movable seat 100, and the baffle will limit the rolling of the inner edge side 12, so that the outer edge side 11 is rolled up first, and the inner edge side 12 is rolled up and pressed against the outer edge side 11, thereby completing the installation of the insulating sheath.

[0059] like Figure 3 and Figure 4 As shown, in some embodiments, a glue storage chamber 500 for filling sealant is opened on the movable seat 100, and the glue storage chamber 500 is connected to the second channel 220, and the glue storage chamber 500 is located on the side wall of the second channel 220 opposite to the inner surface of the inner edge side 12.

[0060] Specifically, a glue storage cavity 500 is provided on the inner wall of the second channel 220 near the receiving groove 110, and the glue storage cavity 500 is used to fill the sealant. The glue storage cavity 500 is an open structure at one end facing the second channel 220, and the opening of the glue storage cavity 500 is covered with a cover plate 510, which can be detachably connected to the movable seat 100 by pinning, clamping, screwing or other methods, so as to limit the sealant in the glue storage cavity 500 through the cover plate 510. One end of the cover plate 510 is set with a gap with the opening edge of the glue storage cavity 500, so that a glue outlet hole 520 is formed there; in addition, the bottom surface of the glue storage cavity 500 extends downwardly at an angle toward one end of the glue outlet hole 520. Thereby, the sealant in the glue storage cavity 500 can flow toward the glue outlet hole 520 in a natural state and be applied on the inner surface of the inner edge side 12.

[0061] During construction, sealant or adhesive is pre-filled in the glue storage cavity 500, such as RTV sealant. When the movable seat 100 moves relative to the insulating sheath, the sealant in the glue storage cavity 500 will flow outward from the glue outlet 520 and smear itself on the inner surface of the inner edge side 12, so that when the inner edge side 12 is pressed against the outer edge side 11, the gap between the inner edge side 12 and the outer edge side 11 is also filled with sealant, thereby improving the connection stability between the inner edge side 12 and the outer edge side 11, and further improving the stability of the insulating sheath installed on the wire.

[0062] In other embodiments, bristles may be provided at the glue outlet 520 to evenly apply the sealant to the inner edge 12. In addition, the glue storage chamber 500 may be provided at the rear end of the movable seat 100 along the moving direction.

[0063] like Figure 2 As shown, in some embodiments, the front end of the moving seat 100 along the moving direction is provided with an expansion head 400, and the end of the expansion head 400 away from the moving seat 100 is provided with an arc portion 410;

[0064] The expansion head 400 is configured to gradually expand the portion of the insulating sheath located in front of the moving seat 100 when the moving seat 100 moves relative to the wire and the insulating sheath.

[0065] In this embodiment, the expansion head 400 is integrally formed with the moving seat 100 , and the expansion head 400 is located at the front end of the moving seat 100 and extends in the moving direction. At this time, the receiving groove 110 simultaneously penetrates the expansion head 400 along the moving direction of the moving seat 100 .

[0066] In addition, the end of the expansion head 400 away from the moving seat 100 is provided with an arc portion 410, so that the end of the expansion head 400 away from the moving seat 100 is a sharp end. In other embodiments, the expansion head 400 can also be connected to the moving seat 100 by welding, bonding or other methods, which is not limited.

[0067] When the movable seat 100 moves relative to the conductor and the insulating sheath, the expansion head 400 will be inserted into the insulating sheath, and the guiding effect of the arc portion 410 will make the gradual expansion process of the insulating sheath smoother, thereby improving the convenience of the insulating sheath passing into the installation channel 200.

[0068] like Figure 2 As shown, in some embodiments, the moving base 100 is provided with a traction portion 600 , so as to control the movement of the moving base 100 through the traction portion 600 .

[0069] In this embodiment, the traction part 600 is a hook plate, which is connected to the movable seat 100 and is located at one end of the movable seat 100 away from the receiving groove 110. During construction, a traction rope, a traction cable or other traction member can be hooked on the hook plate, and then the movable seat 100 is pulled to move relative to the wire and the insulating sheath, thereby completing the installation of the insulating sheath.

[0070] In other embodiments, the traction part 600 may also be arranged at other positions on the movable seat 100, and the traction part 600 may also be arranged as a trolley crawling along the wire. In this case, the trolley is connected to the movable seat 100, and there is no limitation on this.

[0071] In summary, when installing the installation tool provided in the embodiment of the present application, the movable seat 100 is moved close to the wire, and one end of the insulating sheath is unfolded and inserted into the installation channel 200, so that the outer edge side 11 and the inner edge side 12 are respectively located on both sides of the wire. Secondly, the movable seat 100 is moved relative to the wire and the insulating sheath, and the insulating sheath gradually passes to the position behind the movable seat 100. The outer edge side 11 and the inner edge side 12 are successively rolled toward the wire so that the insulating sheath is wrapped around the wire, which solves the problem of low construction efficiency and high operation difficulty when protecting the wire in the prior art; at the same time, the inner edge side 12 will carry out the sealant in the glue storage cavity 500, and make the inner edge side 12 and the outer edge side 11 bonded to each other, thereby improving the stability of the insulating sheath after installation.

[0072] The present application also provides an installation method, using the installation tool described in any one of the above embodiments, characterized in that it includes the following steps:

[0073] Unfold one end of the insulating sheath and insert it into the installation channel 200 on the movable seat 100 in the installation tool;

[0074] Move the movable base 100 close to the conductor so that the outer edge side 11 and the inner edge side 12 of the end of the insulating sheath are located on both sides of the conductor respectively;

[0075] Move the movable seat 100 along the conductor, and the insulating sheath will gradually roll up when it is passed to the rear of the movable seat 100. Under the action of the limiting member 300 in the installation tool, the inner edge side 12 will lag behind the rolling of the outer edge side 11, so that the inner edge side 12 can tightly abut against the outer surface of the outer edge side 11, thereby completing the installation of the insulating sheath.

[0076] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. An installation tool, characterized in that: include: A movable seat (100), the movable seat (100) being used to move along the extension direction of the conductor; The movable seat (100) has a mounting channel (200), the mounting channel (200) extends around the wire, the mounting channel (200) is open at both ends in the moving direction of the movable seat (100), and the mounting channel (200) is used to pass the insulating sheath so that the outer edge side (11) and the inner edge side (12) of the insulating sheath are distributed on both sides of the wire; a limiting member (300), the limiting member (300) being arranged at the end of the movable seat (100) along the moving direction, the limiting member (300) being used to support the inner side of the inner edge side (12), so that after the movable seat (100) moves relative to the wire and the insulating sheath, the outer edge side (11) and the inner edge side (12) are successively rolled toward the wire; The movable seat (100) is provided with a glue storage cavity (500) for filling with sealant, and the glue storage cavity (500) is used to automatically apply the sealant to the inner surface of the inner edge side (12).

2. The installation tool according to claim 1, characterized in that: The installation channel (200) comprises a first channel (210) and a second channel (220) which are interconnected, the first channel (210) and the second channel (220) being located on opposite sides of the wire, the first channel (210) being used to accommodate the outer edge side (11), and the second channel (220) being used to accommodate the inner edge side (12).

3. The installation tool according to claim 2, characterized in that: The glue storage cavity (500) is in communication with the second channel (220), and the glue storage cavity (500) is located on a side wall of the second channel (220) opposite to the inner surface of the inner edge side (12).

4. The installation tool according to claim 2, characterized in that: The limiting member (300) comprises a baffle, the baffle being connected to the movable seat (100), and the baffle being arranged correspondingly at the inner edge of the second channel (220).

5. The installation tool according to any one of claims 1 to 4, characterized in that: The movable seat (100) is provided with a receiving groove (110) for receiving a wire, and the installation channel (200) is arranged around the receiving groove (110).

6. The installation tool according to any one of claims 1 to 4, characterized in that: The front end of the movable seat (100) along the moving direction is provided with an expansion head (400), and the end of the expansion head (400) facing away from the movable seat (100) is provided with an arc-shaped portion (410); The expansion head (400) is configured to gradually expand the portion of the insulating sheath located in front of the moving seat (100) when the moving seat (100) moves relative to the wire and the insulating sheath.

7. The installation tool according to any one of claims 1 to 4, characterized in that: The movable seat (100) is provided with a traction portion (600) so as to control the movement of the movable seat (100) through the traction portion (600).

8. The installation tool according to claim 3, characterized in that: One end of the glue storage cavity (500) facing the second channel (220) is an open structure, the opening of the glue storage cavity (500) is covered by a cover plate (510), and one end of the cover plate (510) is arranged with a gap with the opening edge of the glue storage cavity (500) to form a glue outlet hole (520).

9. The installation tool according to claim 8, characterized in that: The bottom surface of the glue storage cavity (500) extends obliquely downwards towards one end of the glue outlet hole (520).

10. An installation method, using the installation tool according to any one of claims 1 to 9, characterized in that: The following steps are involved: Unfolding one end of the insulating sheath and inserting it into the installation channel (200) on the movable seat (100) in the installation tool; The movable seat (100) is moved close to the conductor so that the outer edge side (11) and the inner edge side (12) of the end of the insulating sheath are respectively located on two sides of the conductor; The movable seat (100) is moved along the conductor, and the insulating sheath gradually passes through the portion behind the movable seat (100) and gradually rolls up. Under the action of the limiting member (300) in the installation tool, the inner edge side (12) lags behind the rolling up of the outer edge side (11), so that the inner edge side (12) can tightly abut against the outer surface of the outer edge side (11), thereby completing the installation of the insulating sheath.

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