An insulating shield

Abstract

The present invention relates to the technical field of power grid protection devices, and in particular to an insulating shielding cover. The insulating shielding cover includes a plurality of base plates and a closing plate. The base plates include a first plate and a second plate connected to each other, and a wire groove is provided between the first plate and the second plate. The first plate of each base plate is slidably overlapped on the second plate of the adjacent base plate along a first direction. A closing plate is slidably provided on the first plate. The base plate has a folding position and an unfolding position along the first direction. When the base plate is in the folding position, the wire groove of the base plate is superimposed on the second plate of the adjacent base plate so that the wire groove of the base plate is closed; when the base plate is in the unfolding position, the wire groove of the base plate is located on one side of the second plate of the adjacent base plate so that the wire groove of the base plate is open and the wire can be passed through the wire groove. The closing plate can slide from the initial position to the locking position and close the wire groove to isolate the wire on both sides of the base plate along its thickness direction to prevent small animals from climbing along the wires of the transformer to the stand area.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid protection devices, and in particular to an insulating shielding cover. Background Art

[0002] During the operation of the stand transformer in the distribution network, small animals such as rats and snakes can easily climb and touch important equipment such as the transformer's high and low voltage terminals, disconnectors, and lightning arresters, causing short circuit failures in the transformer.

[0003] The current primary solution to transformer failures caused by climbing small animals is to install rodent-proof covers or sticky traps on the poles on both sides of the gantry. However, these measures are ineffective and hinder maintenance personnel from climbing the poles to the gantry to maintain the transformer and other equipment. Another approach is to install silicone protective covers on the transformer's low-voltage terminals to seal the terminals. However, these covers require power outages to install, resulting in high installation costs. They also obstruct maintenance personnel's vision, hindering equipment monitoring and negatively impacting the transformer's stable operation.

[0004] Therefore, an insulating shield is urgently needed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an insulating shielding cover to achieve live installation, avoid affecting the normal operation of the distribution network, and at the same time not hinder the safety monitoring of the distribution network by operation and maintenance personnel.

[0006] To achieve this object, the technical solution adopted in the present invention is:

[0007] An insulating shielding cover is used to prevent small animals from climbing along the wires of a transformer to the platform area, and the insulating shielding cover comprises:

[0008] A plurality of substrates, each substrate comprising a first plate and a second plate connected to each other, a wire groove being defined between the first plate and the second plate; the first plate of each substrate being slidably overlapped on the second plate of an adjacent substrate along a first direction; and

[0009] A pulling plate, wherein the pulling plate is slidably provided on the first plate;

[0010] The substrate has a folded position and an unfolded position along a first direction. When the substrate is in the folded position, the wire groove of the substrate is overlapped above the second plate adjacent to the substrate, so that the wire groove of the substrate is closed; when the substrate is in the unfolded position, the wire groove of the substrate is located on one side of the second plate adjacent to the substrate, so that the wire groove of the substrate is open, and the wire can be passed through the wire groove. The pulling plate can slide from the initial position to the locking position and close the wire groove to isolate the wire on both sides of the substrate along its thickness direction.

[0011] As a preferred solution, the first plate and the second plate have the same thickness, the first plate is higher than the second plate, and the height difference between the first plate and the second plate is equal to the plate thickness of the first plate, so that the two end surfaces of the multiple overlapping substrates along their thickness direction are respectively flush.

[0012] As a preferred solution, one of the first plate of the substrate and the second plate of the adjacent substrate is provided with a first sliding groove extending along a first direction, and the other is provided with a first sliding buckle. When the first plate of the substrate slides back and forth between the folded position and the unfolded position, the first sliding groove and the first sliding buckle are slidably engaged.

[0013] As a preferred solution, one of the first plate of the substrate and the second plate of the adjacent substrate is further provided with a first limiting groove, and the first limiting groove is connected to the first sliding groove. When the first plate of the substrate slides to the expanded position, the first slide buckle is engaged in the first limiting groove.

[0014] As a preferred solution, one of the closing plate and the first plate is provided with a second sliding groove extending along the first direction, and the other is provided with a second sliding buckle. When the closing plate slides back and forth between the initial position and the locking position, the second sliding groove and the second sliding buckle are slidably engaged.

[0015] As a preferred solution, one of the closing plate and the first plate is further provided with a second limiting groove, and the second limiting groove is connected to the second sliding groove; when the closing plate is in the initial position, the second sliding buckle is engaged in the second limiting groove.

[0016] As a preferred embodiment, a locking groove is provided on the closing plate, and the locking groove has an opening facing the wire groove. When the closing plate slides to the locking position, the locking groove is located above the wire groove and is surrounded by the wire groove to form a lock hole, and the wire can be fixedly passed through the lock hole.

[0017] As a preferred solution, a pull ring is provided on the closing plate, and the pull ring is configured to pull the closing plate to slide back and forth between an initial position and a locking position.

[0018] As a preferred solution, an avoidance groove is provided on the pulling plate, and a limiting piece is provided on the second plate. When the pulling plate is in the initial position, the avoidance groove accommodates the limiting piece of the adjacent substrate; when the pulling plate is in the locked position, the limiting piece of the substrate is clamped and connected to the pulling plate.

[0019] As a preferred solution, the base plate and the pulling plate are arc-shaped plates with the same curvature.

[0020] The beneficial effects of the present invention are:

[0021] The insulating shield proposed in the present invention can be installed on live transformer conductors without powering off, ensuring stable operation of the distribution network. The first plate of each base plate slides along a first direction and overlaps the second plate of an adjacent base plate, creating a telescopic structure for the insulating shield. This not only reduces the size of the insulating shield, facilitating transport and storage, but also allows the same number of base plates to be adjusted to their deployed positions according to the number of conductors, making the insulating shield highly versatile.

[0022] When the baseplate is in the extended position, the wires can be routed through the wire duct. The closing plate then slides from its initial position to the locked position, sealing the duct and isolating the wires on both sides of the baseplate along its thickness. This allows the insulating shield to act as a barrier, preventing small animals such as mice and snakes from climbing along the wires to the transformer stand area, thus protecting the transformer and distribution network within the stand area. This does not affect the heat dissipation of the transformer and wires, nor does it hinder the safety monitoring of the transformer and its distribution network by maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the insulating shielding cover provided by an embodiment of the present invention.

[0024] The names and numbers of the components in the figure are as follows:

[0025] 1. Base plate; 10. Wire duct; 11. First plate; 110. First slide groove; 111. First limiting groove; 112. Second slider; 12. Second plate; 121. First slider; 122. Limiting member;

[0026] 2. Pull-and-close plate; 20. Locking groove; 21. Second sliding groove; 22. Second limiting groove; 23. Pull ring; 24. Avoidance groove. DETAILED DESCRIPTION

[0027] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the drawings only show portions relevant to the present invention, not all of them.

[0028] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0029] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0031] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0032] To address transformer failures caused by small animals climbing on them, the current solution is to install silicone protective covers on the transformer terminals. However, these covers require a power outage to install, which is expensive. Furthermore, when the terminals experience excessive contact resistance and heat, the insulating covers hinder heat dissipation and hinder equipment monitoring by maintenance personnel.

[0033] To solve the above problems, Figure 1As shown, this embodiment discloses an insulating shielding cover for preventing small animals from climbing along the wires of the transformer to the platform area. Specifically, the insulating shielding cover includes a plurality of substrates 1 and a closing plate 2. The substrate 1 includes a first plate 11 and a second plate 12 connected to each other. A wire groove 10 is provided between the first plate 11 and the second plate 12. The first plate 11 of each substrate 1 is slidably overlapped on the second plate 12 of the adjacent substrate 1 along a first direction. A closing plate 2 is slidably provided on the first plate 11. The first direction is the length direction of the substrate 1, that is, Figure 1 Center X-axis direction.

[0034] The base plate 1 has a folded position and an extended position along a first direction. When the base plate 1 is in the folded position, the wire groove 10 of the base plate 1 is superimposed on the second plate 12 of the adjacent base plate 1, thereby enclosing the wire groove 10 of the base plate 1. When the base plate 1 is in the extended position, the wire groove 10 of the base plate 1 is located on one side of the second plate 12 of the adjacent base plate 1, thereby opening the wire groove 10 of the base plate 1. The wire is passed through the wire groove 10. The closing plate 2 slides from the initial position to the locked position, enclosing the wire groove 10 and isolating the wire on both sides of the base plate 1 along its thickness direction.

[0035] The insulating shield of this embodiment provides a barrier, preventing small animals such as rats and snakes from climbing along the transformer's wires into the rack area, thereby protecting the transformer and distribution network within the rack area. Furthermore, it does not affect the heat dissipation of the transformer and wires, nor does it hinder maintenance personnel from safely monitoring the transformer and its distribution network.

[0036] It should be noted that the insulating shielding cover is made of PC material, has good insulation performance, and has a smooth surface, which can prevent small animals such as mice or snakes from climbing onto the insulating shielding cover, thereby enhancing the isolation effect of the insulating shielding cover.

[0037] The installation process of the insulating shielding cover is as follows: an installation tool is assembled by a link rod and a clamp, and a clamp is installed on the top of the link rod, which can fix the insulating shielding cover. The operation and maintenance personnel stand on the ground or on a lifting vehicle, and hold up the link rod so that the insulating shielding cover reaches the height of the wire. Then the wire grooves 10 of the substrate 1 in the open position in the insulating shielding cover are aligned with the wires one by one, and then the insulating shielding cover is moved in the direction close to the wires, and finally multiple wires are respectively passed through the corresponding wire grooves 10. The pulling plate 2 on the substrate 1 in the open position is pulled by a tool (such as a link rod), so that the pulling plate 2 slides from the initial position to the locking position and closes the wire groove 10 to isolate the wires on both sides of the substrate 1 along its thickness direction. During this process, the transformer and its wires do not need to be powered off, so it will not affect the normal operation of the distribution network, and the live installation of the insulating shielding cover is realized.

[0038] Furthermore, in order to facilitate the installation of the insulating shield, the clamp can adjust the installation angle and can automatically clamp or release the insulating shield. Since the clamp is a commonly used tool in this field, its specific structure will not be described in detail.

[0039] like Figure 1 As shown, the closing plate 2 is provided with a pull ring 23, which is used to pull the closing plate 2 back and forth between the initial position and the locked position. After the wires are inserted into the corresponding wire ducts 10, the operator can insert a link rod into the pull ring 23 to pull the closing plate 2 downward from the initial position to the locked position. The pull ring 23 facilitates the application of tension to the closing plate 2, allowing the closing plate 2 to move quickly between the initial position and the locked position, making operation easier for the operator.

[0040] like Figure 1 As shown, the first plate 11 of each substrate 1 is slidably overlapped with the second plate 12 of the adjacent substrate 1 along a first direction. Multiple substrates 1 are sequentially overlapped and connected along the first direction, resulting in a telescopic structure for the insulation shield. This not only reduces the size of the insulation shield, but also facilitates transportation and storage. Furthermore, the same number of substrates 1 can be adjusted to the expanded position according to the number of wires, making the insulation shield highly versatile.

[0041] For example, the insulating shield has five base plates 1, each slidably mounted on a pull-and-close plate 2. When there are two conductors (two-phase conductors), two of the five base plates 1 are in the extended position. These two extended base plates 1 can be adjacent or spaced apart, depending on the spacing between the conductors. The remaining three base plates 1 are in the folded position. When there are three conductors (three-phase conductors), three of the five base plates 1 are in the extended position. These three extended base plates 1 can be adjacent or spaced apart. The remaining two base plates 1 are in the folded position.

[0042] It is important to note that the base plate 1 and the closing plate 2 are curved plates with the same curvature, giving the insulation shield an overall arc shape. When the insulation shield is installed on the conductor, the concave side of the insulation shield faces the climbing direction of small animals, making it more difficult for small animals to circumvent the insulation shield and improving the insulation protection effectiveness of the insulation shield. In other embodiments, the base plate 1 and the closing plate 2 can also be flat plates.

[0043] The substrate 1 of this embodiment has a uniform thickness and is a Z-shaped plate. The first plate 11 and the second plate 12 have the same thickness. The first plate 11 is higher than the second plate 12 and the height difference between the first plate 11 and the second plate 12 is equal to the thickness of the first plate 11, so that the two end faces of the multiple overlapping substrates 1 along their thickness direction are flush, so that the insulating shielding cover is installed vertically on the wire, avoiding the insulating shielding cover from being tilted after unfolding, thereby reducing the blocking effect on small animals.

[0044] like Figure 1 As shown, one of the first plate 11 of the substrate 1 and the second plate 12 of the adjacent substrate 1 is provided with a first sliding groove 110 extending along the first direction, and the other is provided with a first sliding buckle 121. When the first plate 11 of the substrate 1 slides back and forth between the folded position and the unfolded position, the first sliding groove 110 and the first sliding buckle 121 slide together, which not only realizes the sliding connection of the two substrates 1, but also plays a limiting and guiding role in the sliding of the substrate 1, thereby improving the stability of the sliding process of the substrate 1.

[0045] Specifically, the first plate 11 of the substrate 1 is provided with a first slide groove 110 extending along a first direction, and the second plate 12 of the adjacent substrate 1 is provided with a first slider 121. For ease of description, one substrate 1 is referred to as the first substrate, and the adjacent substrate 1 is referred to as the second substrate. The first slider 121 is an L-shaped plate, and the second substrate 12 can be stamped to form the first slider 121, which is simple to operate and low in cost. The first slider 121 on the second substrate can pass through the first slide groove 110 of the first substrate and extend to one side of the first slide groove 110, thereby slidably engaging the first plate 11 of the first substrate with the second plate 12 of the second substrate.

[0046] In other embodiments, the first plate 11 of the base plate 1 is provided with a first slider 121 , and the second plate 12 of the adjacent base plate 1 is provided with a first sliding groove 110 extending along the first direction.

[0047] It should be noted that the two ends of the first slide groove 110 along the length direction of the substrate 1 are respectively the unfolded position and the folded position. When the first slider 121 slides to one end of the first slide groove 110, the first substrate is in the unfolded position. At this time, the wire groove 10 of the first substrate is located on the outside of the second plate 12 of the second substrate, so that the wire can freely enter the wire groove 10. When the first slider 121 slides to the other end of the first groove, the first substrate is in the folded position. At this time, the wire groove 10 of the first substrate is located above the second plate 12 of the second substrate, so that the second plate 12 of the second substrate blocks the wire groove 10 of the first substrate, resulting in the wire being unable to enter the wire groove 10.

[0048] It should be noted that when installing the insulation shield, it is generally necessary to stand the insulation shield upright. Figure 1The X-axis direction (length direction) is adjusted to the vertical direction. Before the wire enters the corresponding wire groove 10, the second substrate may slide downward relative to the first substrate under the action of its own gravity, thereby changing the first substrate from the unfolded position to the folded position, so that the wire groove 10 of the first substrate is closed and the wire cannot enter the wire groove 10. To this end, one of the first plate 11 of the substrate 1 and the second plate 12 of the adjacent substrate 1 is further provided with a first limiting groove 111, and the first limiting groove 111 is connected to the first slide groove 110. When the first plate 11 of the substrate 1 slides to the unfolded position, the first slide buckle 121 is engaged in the first limiting groove 111, thereby locking the relative positions of the first substrate and the second substrate, so that the wire groove 10 of the first substrate always remains in an open state, facilitating the free entry of the wire.

[0049] Furthermore, the first plate 11 of the base plate 1 is provided with a first limiting groove 111, which is communicated with the first sliding groove 110. In other embodiments, when the second plate 12 of the second base plate is provided with the first sliding groove 110 extending along the first direction, the second plate 12 of the second base plate is also provided with a first limiting groove 111, which is communicated with the first sliding groove 110.

[0050] like Figure 1 As shown, one of the closing plate 2 and the first plate 11 defines a second sliding groove 21 extending in a first direction, and the other defines a second slider 112. When the closing plate 2 slides back and forth between the initial position and the locked position, the second sliding groove 21 and the second slider 112 slide together, not only achieving a sliding connection between the closing plate 2 and the first plate 11, but also providing a position limiting and guiding function for the sliding of the closing plate 2, thereby improving the stability of the sliding process of the closing plate 2.

[0051] Specifically, the closing plate 2 defines a second slot 21 extending along a first direction, and the first plate 11 of the base plate 1 is provided with a second slider 112. The second slider 112 is an L-shaped plate and can be stamped from the first plate 11, which is simple to operate and low-cost. The second slider 112 on the first plate 11 can pass through the second slot 21 of the closing plate 2 and extend to one side of the second slot 21, thereby slidably engaging the closing plate 2 with the first plate 11 of the base plate 1.

[0052] In other embodiments, the closing plate 2 is provided with a second slider 112 , and the first plate 11 of the base plate 1 is provided with a second sliding groove 21 extending along the first direction.

[0053] It should be noted that the two ends of the second chute 21 along the length of the base plate 1 are respectively the initial position and the locked position. When the second slider 112 slides to one end of the second chute 21, the pull-close plate 2 is in the initial position. At this time, the pull-close plate 2 is located above the first plate 11 of the base plate 1, and the wire can freely enter the wire groove 10. When the second slider 112 slides to the other end of the second chute 21, the pull-close plate 2 is in the locked position. At this time, the pull-close plate 2 is located above the wire groove 10, the pull-close plate 2 blocks the wire groove 10 and forms a lock hole with the wire groove 10, so that the wire is fixedly inserted into the lock hole.

[0054] Before a wire enters the corresponding wire trough 10, the closing plate 2 may slide from its initial position to a locked position under its own weight, closing the wire trough 10 and preventing the wire from entering. To this end, one of the closing plate 2 and the first plate 11 is further provided with a second limiting groove 22, which communicates with the second sliding groove 21. When the closing plate 2 is in its initial position, the second slider 112 engages with the second limiting groove 22, thereby locking the relative position of the closing plate 2 and the first plate 11. This ensures that the wire trough 10 of the base plate 1 remains open, facilitating the free entry of the wire into the trough 10.

[0055] like Figure 1 As shown, the closing plate 2 is provided with a locking groove 20, which opens toward the wire duct 10. When the closing plate 2 slides to the locked position, the locking groove 20 is located above the wire duct 10 and forms a locking hole with the wire duct 10, through which the wire can be securely inserted. The outer edge of the locking groove 20 is provided with a thickened portion upward to increase the contact area between the closing plate 2 and the wire, thereby preventing damage to the wire when the closing plate 2 slides to the locked position.

[0056] Furthermore, a clearance groove 24 is provided on the closing plate 2, and a limit member 122 is provided on the second plate 12. When the closing plate 2 is in the initial position, the clearance groove 24 accommodates the limit member 122 of the adjacent base plate 1. When the closing plate 2 is in the locked position, the limit member 122 of the base plate 1 engages with the closing plate 2, thereby firmly securing the closing plate 2 in the locked position.

[0057] Specifically, the stopper 122 is an L-shaped plate. The second plate 12 can be stamped to obtain the stopper 122, which is easy to operate and low in cost. Of course, the stopper 122 can also be of other structures as long as it can be detachably connected to the pull-together plate 2, and no specific limitation is given here.

[0058] The above embodiments merely illustrate the basic principles and features of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An insulating shield, characterized in that: Used to prevent small animals from climbing along the transformer wires to the platform area, the insulating shield includes: A plurality of substrates (1), wherein the substrates (1) comprise a first plate (11) and a second plate (12) connected to each other, wherein a wire groove (10) is provided between the first plate (11) and the second plate (12); the first plate (11) of each substrate (1) is slidably overlapped on the second plate (12) of an adjacent substrate (1) along a first direction; and A pulling plate (2), wherein the pulling plate (2) is slidably provided on the first plate (11); The substrate (1) has a folding position and an unfolding position along a first direction. When the substrate (1) is in the folding position, the wire groove (10) of the substrate (1) is stacked above the second plate (12) adjacent to the substrate (1), so that the wire groove (10) of the substrate (1) is closed; when the substrate (1) is in the unfolding position, the wire groove (10) of the substrate (1) is located on one side of the second plate (12) adjacent to the substrate (1), so that the wire groove (10) of the substrate (1) is opened, and the wire can be passed through the wire groove (10). The pulling plate (2) can slide from an initial position to a locking position and close the wire groove (10), so as to isolate the wire from both sides of the substrate (1) along its thickness direction.

2. The insulating shield according to claim 1, wherein: The thickness of the first plate (11) and the second plate (12) are the same, the first plate (11) is higher than the second plate (12), and the height difference between the first plate (11) and the second plate (12) is equal to the plate thickness of the first plate (11), so that the two end surfaces of the multiple overlapping substrates (1) along the thickness direction are respectively flush.

3. The insulating shield according to claim 1, wherein: One of the first plate (11) of the substrate (1) and the second plate (12) adjacent to the substrate (1) is provided with a first sliding groove (110) extending along a first direction, and the other is provided with a first sliding buckle (121). When the first plate (11) of the substrate (1) slides back and forth between a folded position and an unfolded position, the first sliding groove (110) and the first sliding buckle (121) are slidably matched.

4. The insulating shield according to claim 3, wherein: One of the first plate (11) of the base plate (1) and the second plate (12) adjacent to the base plate (1) is further provided with a first limiting groove (111), the first limiting groove (111) being connected to the first sliding groove (110), and when the first plate (11) of the base plate (1) slides to the unfolded position, the first sliding buckle (121) is engaged in the first limiting groove (111).

5. The insulating shield according to claim 1, wherein: One of the pulling plate (2) and the first plate (11) is provided with a second sliding groove (21) extending along a first direction, and the other is provided with a second sliding buckle (112). When the pulling plate (2) slides back and forth between an initial position and a locking position, the second sliding groove (21) and the second sliding buckle (112) are slidably engaged.

6. The insulating shield according to claim 5, wherein: One of the pull-together plate (2) and the first plate (11) is further provided with a second limiting groove (22), and the second limiting groove (22) is communicated with the second sliding groove (21); when the pull-together plate (2) is located at the initial position, the second sliding buckle (112) is engaged in the second limiting groove (22).

7. The insulating shield according to any one of claims 1 to 6, wherein: A locking groove (20) is provided on the pulling plate (2), and the locking groove (20) has an opening facing the wire groove (10). When the pulling plate (2) slides to a locking position, the locking groove (20) is located above the wire groove (10) and is surrounded by the wire groove (10) to form a lock hole, and the wire can be fixedly inserted into the lock hole.

8. The insulating shield according to any one of claims 1 to 6, wherein: A pull ring (23) is provided on the closing plate (2), and the pull ring (23) is configured to pull the closing plate (2) to slide back and forth between an initial position and a locking position.

9. The insulating shield according to any one of claims 1 to 6, wherein: The pull-together plate (2) is provided with an avoidance groove (24), and the second plate (12) is provided with a limiting member (122); when the pull-together plate (2) is located at an initial position, the limiting member (122) of the adjacent base plate (1) is accommodated in the avoidance groove (24); when the pull-together plate (2) is located at a locked position, the limiting member (122) of the base plate (1) is snap-connected with the pull-together plate (2).

10. The insulating shield according to any one of claims 1 to 6, wherein: The base plate (1) and the pulling plate (2) are arc-shaped plates with the same curvature.

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