Plugging device

Abstract

The utility model relates to the technical field of plate cabinets, and provides a plugging device, which comprises an installation part, a plugging part, a sealing part, a sealing part, a sealing part, a sealing part and a sealing part, the installation part is provided with installation holes, and the periphery of the installation part is used for being connected with a plate cabinet bottom plate; and the at least one plugging structure comprises an elastic piece arranged in the mounting hole and an abutting piece arranged on the mounting piece, a cable passing hole is formed in the elastic piece, the cable passing hole is used for allowing the cable to penetrate through, the abutting piece is used for abutting against the elastic piece so that the elastic piece can be in interference fit with the mounting hole, and the elastic piece clamps the cable located in the cable passing hole. The plugging device provided by the utility model aims to solve the problems of complex plugging process, high cost and poor sealing effect of a plate cabinet in the prior art.

Description

TECHNICAL FIELD

[0001] The utility model relates to disc cabinet technical field especially relates to a plugging device. BACKGROUND

[0002] Disc cabinet cable usually enters disc cabinet interior through disc cabinet bottom hole from lower building, cable trench, cable corridor etc., and in addition to meeting the fireproof demand of cable crossing hole part in national standard, electric power standard, should also satisfy the requirements such as preventing external moisture from invading, gnawing and running of gnawing animals. At present, disc cabinet incoming line hole fireproof plugging mainly uses traditional blocking material such as fireproof clay, fireproof board to plug, and traditional blocking material will appear phenomena such as reform difficulty, unable to reuse, cracking, aging, melting, short service life etc. during use, causes maintenance cost to increase, maintenance cycle to grow and other shortcomings. SUMMARY

[0003] The utility model provides a kind of plugging device, to solve the problem of complex disc cabinet plugging process, high cost, poor sealing effect in traditional technology.

[0004] To solve the above problems, the utility model provides a kind of plugging device, comprising:

[0005] Mounting piece, mounting hole is equipped on the mounting piece, and the peripheral side of the mounting piece is used to be connected with disc cabinet bottom plate;And,

[0006] At least one plugging structure, including elastic member arranged in the mounting hole and abutting member arranged in the mounting piece, the elastic member is provided with wire hole, the wire hole is used to be provided with cable, and the abutting member is used to abut the elastic member, so that the elastic member is in interference fit with the mounting hole, and the elastic member clamps the cable in the wire hole.

[0007] According to the plugging device provided by the utility model, the plugging structure includes a plurality of elastic members, each elastic member is sequentially and adjacently arranged in the mounting hole, when the abutting member abuts the elastic member, each elastic member is mutually extruded and fitted and is in interference fit with the mounting hole.

[0008] According to the plugging device provided by the utility model, the plugging structure further includes at least one partition plate arranged in the mounting piece, the partition plate is used to separate the mounting hole, and one side of part of the elastic member is arranged in close contact with the partition plate.

[0009] According to the plugging device provided by the utility model, the elastic member includes first elastic body and second elastic body arranged in nest, the second elastic body is provided with the wire hole, and the hardness of the first elastic body is greater than the hardness of the second elastic body.

[0010] According to the utility model provide a kind of plugging device, the second elastomer includes the multiple elastic rings of being sequentially sleeved, the diameter of each elastic ring sequentially decreases;And / or, the second elastomer includes multiple elastic bands of being stacked around, the elastic ring and the elastic band are all used to make the aperture size of the wire hole adjustable arrangement.

[0011] According to the utility model provide a kind of plugging device, the elastic member includes main elastic member and vice elastic member, the structure of the main elastic member is same with the vice elastic member, the size of the vice elastic member is less than the size of the main elastic member, the wire hole of the main elastic member is used to wear the cable, blind plug module is equipped in the wire hole of the vice elastic member, for providing redundancy plugging.

[0012] According to the utility model provide a kind of plugging device, the abutting member includes two mounting blocks, conical tensioning block and drive bolt, one side of one mounting block is in contact with the side wall of the mounting hole, one side of another mounting block is in contact with the elastic member, the movable channel is formed between two mounting blocks, the shape of the movable channel is adapted to the shape of the conical tensioning block;The drive bolt is arranged in the movable channel, the conical tensioning block is threadedly connected to the drive bolt, and the drive bolt is used to drive the conical tensioning block to ascend and descend along the movable channel to drive two mounting blocks to approach or move away.

[0013] According to the utility model provide a kind of plugging device, the plugging structure includes an elastic member, the elastic member includes at least two third elastomers, each third elastomer encloses the wire hole, when the abutting member abuts against the elastic member, each third elastomer is extruded to be in interference fit with the mounting hole and clamps the cable in the wire hole.

[0014] According to the utility model provide a kind of plugging device, the abutting member includes pressing plate and connecting bolt arranged at two ends of the mounting member, each connecting bolt is used to drive each pressing plate to press the end of the third elastomer to drive the third elastomer to deform and expand.

[0015] According to the utility model provide a kind of plugging device, the mounting member includes support plate and mounting frame, the support plate is used to be connected with the disc cabinet bottom plate, mounting port is equipped on the support plate, and the mounting frame is arranged in the mounting port.

[0016] The mounting hole is formed in the inside of the mounting frame, and the support plate is coated with a fireproof sealing layer except the mounting port.

[0017] The plugging device can be used for upgrading and reforming the existing disc cabinet, can be disassembled and assembled without damage, has a short replacement period and can be repeatedly used. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 is a structural schematic view of the first embodiment of the plugging device provided by the present application;

[0020] Figure 2 is Figure 1 is a sectional view structure schematic view along A-A direction;

[0021] Figure 3 is Figure 2 is a structural schematic view of the plugging structure in the second embodiment;

[0022] Figure 4 is a structural schematic view of the second embodiment of the plugging device provided by the present application;

[0023] Figure 5 is Figure 4 is a sectional view structure schematic view along B-B direction;

[0024] Figure 6 is Figure 5 is a structural schematic view of the plugging structure in the second embodiment.

[0025] Reference signs: 1, mounting piece; 11, support plate; 111, mounting port; 12, mounting frame; 121, mounting hole; 13, fireproof sealing layer; 2, plugging structure; 21, elastic piece; 211, wire passing hole; 212, first elastic body; 213, second elastic body; 2131, elastic ring; 214, main elastic piece; 215, auxiliary elastic piece; 2151, blind plug module; 216, third elastic body; 217, partition plate; 22, abutting piece; 221, mounting block; 222, conical tension block; 223, driving bolt; 224, movable channel; 225, pressing plate; 226, connecting bolt; 3, cable. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model will be described clearly and completely in combination with the drawings in the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] In the description of the embodiments of the utility model, it should be explained that unless there is explicit provision and limitation, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through intermediate medium. For the ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0028] In the description of the embodiments of the utility model, it should be explained that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the embodiments of the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore, it cannot be understood as a limitation on the embodiments of the utility model.

[0029] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless there is explicit specific limitation.

[0030] The embodiments of the utility model will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as a limitation on the utility model.

[0031] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, which in itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the applicability of other processes and / or the use of other materials.

[0032] The following will be described in conjunction with Figures 1-6 The sealing device provided by the present application is described.

[0033] In view of the problems of complex sealing process, high cost and poor sealing effect of the disc cabinet in the prior art, the present application provides a sealing device, which comprises a mounting member 1 and at least one sealing structure 2.

[0034] The mounting member 1 is provided with a mounting hole 121, and the peripheral side of the mounting member 1 is used to connect with the bottom plate of the disc cabinet. The sealing device provided by the present application can be applied to the upgrading and modification of the existing disc cabinet, and can also be applied to the production and manufacturing of new disc cabinets. When it comes to the upgrading and modification of the existing disc cabinet, only the disc cabinet bottom plate needs to be cut to form a hollow hole for mounting the mounting member 1. After the mounting member 1 is installed, the cable 3 is arranged from the inside of the mounting member 1 to the outside, so that the upgrading and modification can be completed. Further, the sealing structure 2 can be provided as one or more. Since the types of cables 3 are different, the distribution positions can also be different, so one or more sealing structures 2 can be provided for matching. The details will be described below.

[0035] Specifically, the sealing structure 2 comprises an elastic member 21 arranged in the mounting hole 121 and a pressing member 22 arranged on the mounting member 1. The elastic member 21 is provided with a wire passing hole 211, and the wire passing hole 211 is used for arranging the cable 3. The pressing member 22 is used to press the elastic member 21. The pressing member 22 can press the elastic member 21 from one side, half-enclose the elastic member 21, or fully enclose and clamp the elastic member 21. The main purpose is to make the elastic member 21 fit with the mounting hole 121, and the elastic member 21 clamps the cable 3 in the wire passing hole 211. In this way, by applying pressure through the pressing member 22, the elastic member 21 simultaneously realizes the interference fit with the mounting hole 121 and the clamping sealing of the cable 3, which seals the gap between the mounting hole 121 and the cable 3 in one step, simplifies the installation process, and the elastic member 21 can restore the deformation, which is convenient for disassembly and reuse, and significantly reduces the maintenance cost.

[0036] Please refer to Figures 1-3The utility model provides a kind of for smaller diameter, and more quantity cable 3, the utility model provides an embodiment. Specifically, the plugging structure 2 includes multiple elastic members 21, each elastic member 21 is sequentially adjacent in mounting hole 121.When abutting member 22 abuts against elastic member 21, each elastic member 21 is mutually extruded and fits with mounting hole 121 with interference. Multiple elastic members 21 can be correspondingly provided with multiple cables 3, and multiple elastic members 21 only contact each other and are not substantially connected, by abutting member 22 abutting against some or all of elastic members 21, each elastic member 21 will be mutually extruded under the action of external force, fill the gap between elastic member 21 and the gap between elastic member 21 and mounting hole 121, in addition, it can also be all-round extruded and clamped to cable 3, to enhance the reliability and uniformity of sealing. Even if single elastic member 21 exists manufacturing deviation, it can be compensated by overall extrusion, ensure that mounting hole 121 is sealed everywhere, improve the adaptability of plugging device.

[0037] When multiple elastic members 21 are provided, the shape of each elastic member 21 needs to be regular, such as a cube or a cuboid, so that each elastic member 21 can be arranged regularly and can be seamlessly fitted. Since each elastic member 21 is not actually connected, when the number of elastic members 21 is too large, there may be misplacement or displacement. In the technical solution provided by the utility model, the plugging structure 2 further includes at least one partition plate 217 provided on the mounting member 1, the partition plate 217 is used to separate the mounting hole 121, and one side of part of the elastic members 21 is arranged in close contact with the partition plate 217. The partition plate 217 is connected with the mounting member 1, on the one hand, by separating the mounting hole 121, the mounting hole 121 is divided into several parts, which facilitates the positioning and installation of the elastic members 21, and on the other hand, the elastic members 21 can be further abutted by the abutting member 22. In an optional embodiment, multiple partition plates 217 can be provided, one row of elastic members 21 is placed between every two partition plates 217, and each elastic member 21 forms a dot matrix shape as shown in the figure, which facilitates the positioning and installation of the elastic members 21. Figure 1 Since the partition plate 217 needs to have a certain deformation and extrusion effect, the hardness should not be too high, and in an optional embodiment, the material of the partition plate 217 is 304 or 316L.

[0038] It should be noted that the outer wall of the elastic member 21 is used to extrude and fill the gap, and the inside is used to clamp the cable 3. In order to ensure the use effect, the elastic member 21 includes a first elastic body 212 and a second elastic body 213 arranged in a nested manner, the second elastic body 213 is provided with a wire hole 211, and the hardness of the first elastic body 212 is greater than that of the second elastic body 213. The hard first elastic body 212 provides structural support and initial sealing, and the soft second elastic body 213 is easy to deform to clamp the cable 3. This soft and hard combination design not only ensures the overall sealing strength, but also enhances the holding force of the cable 3.

[0039] As mentioned above, the diameters of the cables 3 are different, in order to facilitate the adaptation of the diameters of the cables 3, in an optional embodiment, the second elastic body 213 comprises a plurality of elastic rings 2131 which are sequentially sleeved, and the diameters of the elastic rings 2131 are sequentially reduced. In use, one or more elastic rings 2131 can be torn off so that the diameter of the wire hole 211 matches the diameter of the cable 3. In another embodiment, the second elastic body 213 comprises a plurality of elastic bands which are stacked and surrounded, and the lengths of the elastic bands can be the same or different. In use, one or more elastic bands can be torn off so that the diameter of the wire hole 211 matches the diameter of the cable 3. In this way, the same diameter of the wire hole 211 can be produced in production, improving production efficiency, and the diameter of the wire hole 211 can be adjusted according to the installation requirements in actual application, so as to match the diameter of the cable 3, improving the sealing effect and the application range.

[0040] Further, due to line upgrading, the types and quantities of the cables 3 can also change, and re-arrangement at this time will cause complex procedures and increased costs. Therefore, in the technical scheme provided by the utility model, the elastic member 21 comprises a main elastic member 214 and a secondary elastic member 215, the main elastic member 214 and the secondary elastic member 215 are the same in structure, and the size of the secondary elastic member 215 is smaller than that of the main elastic member 214. It can be seen from Figure 1 that the secondary elastic member 215 with a smaller size is arranged on the left side of the mounting hole 121, and the main elastic member 214 with a larger size is arranged on the right side, and both of them are provided with the first elastic body 212, the second elastic body 213 and the wire hole 211, and the structures are completely the same. In fact, under normal circumstances, the diameter of the wire hole 211 on the main elastic member 214 can meet the installation of almost all sizes of the cables 3, and the secondary elastic member 215 is provided to provide redundancy for plugging, and when it is necessary to increase the cables 3, the secondary elastic member 215 can be removed to set an additional main elastic member 214, so as to meet the needs of the increase of the cables 3. Further, the wire hole 211 of the main elastic member 214 is used for threading the cable 3, and the wire hole 211 of the secondary elastic member 215 is provided with a blind plug module 2151, which can be a metal column or other hard column, and the wire hole 211 is plugged.

[0041] The setting mode of the abutting member 22 has various modes, and since a plurality of elastic members 21 are arranged and abut against each other, the abutting member 22 can abut against a plurality of elastic members 21 from one side, and then transmit the abutting force in sequence so that each elastic member 21 abuts and is tightened in sequence. In other setting modes, the elastic members 21 can be abutted from multiple sides. In an embodiment provided by the utility model, the abutting member 22 comprises two mounting blocks 221, a conical tension block 222 and a driving bolt 223. It can be seen from Figure 2 and Figure 3One side of the mounting block 221 abuts against the sidewall of the mounting hole 121, and the other side of the mounting block 221 abuts against the elastic member 21. The two mounting blocks 221 form a movable channel 224 therebetween, which is shaped to match the shape of the conical tension block 222. The drive bolt 223 is arranged in the movable channel 224, and the conical tension block 222 is threadedly connected to the drive bolt 223. The drive bolt 223 is used to drive the conical tension block 222 to ascend or descend along the movable channel 224, so as to drive the two mounting blocks 221 to move close to or away from each other. In an alternative embodiment, one tension block can be arranged, and the movable channel 224 can be funnel-shaped. In order to ensure the stability of the abutting movement, the conical tension block 222 is arranged in two parts, which are arranged at the two ends of the drive bolt 223. Correspondingly, the movable channel 224 includes two opposite funnel-shaped cavities and a connecting cavity. When the drive bolt 223 is rotated in the forward direction or the reverse direction, the two conical tension blocks 222 will move towards or away from each other due to the different thread directions, so that the two mounting blocks 221 move close to or away from each other. When the two mounting blocks 221 move away from each other, the elastic members 21 on one side can be abutted, so that the elastic members 21 are pressed and fitted against each other. In other embodiments, a push plate can be arranged to press and fit the elastic members 21. One side of the push plate is connected with a screw rod, the screw rod passes through a screw hole, and the push plate can push the elastic members 21 to press and fit by screwing the screw rod. It should be noted that one side of the mounting block 221 can directly abut against the elastic member 21 or the partition plate 217, which depends on the arrangement of the partition plate 217, and the utility model does not limit this. The mounting block 221 can be connected with or abut against the partition plate 217 or the sidewall of the mounting hole 121, and the utility model does not limit this.

[0042] In the above embodiment, the rectangular elastic members 21 are arranged in groups and sequentially stacked in the rectangular mounting hole 121 of a certain size. The abutting member 22 applies pressure to the elastic members 21 in the limited space, and the elastic members 21 will slightly elongate in the length direction. However, due to the limiting of the partition plate 217 and the friction between the elastic members 21, the elastic members 21 will not be unstable, displaced or detached under the conditions of self-tightening pressure, external medium pressure or vibration. Therefore, after being pressed by the abutting member 22, the elastic members 21 can be elastically pressed in the transverse direction, effectively sealing the joint gap of each component, so that all the elastic members 21 in the mounting hole 121 form a stable and reliable sealing structure. In specific applications, the drive bolt 223 on the conical tension block 222 is tightened, so that the conical tension block 222 is lowered and provides a pressing force to the elastic members 21. Due to the interaction of forces, the elastic members 21, the elastic members 21 and the mounting hole 121 are in seamless contact under the pressing force, and a certain pressure-resistant sealing is achieved.

[0043] The foregoing embodiment of the plugging structure 2 is suitable for cables 3 with small size and no spacing requirement. For cables with spacing requirement or diameter exceeding 35 mm, the second embodiment of the plugging structure 2 is used. Specifically, referring to Figures 4-6 , the plugging structure 2 comprises an elastic member 21, which comprises at least two third elastic bodies 216, each of which encloses a wire passing hole 211. When the abutting member 22 abuts against the third elastic bodies 216, the third elastic bodies 216 are pressed against each other to form an interference fit with the mounting hole 121 and clamp the cable 3 in the wire passing hole 211. The third elastic bodies 216 can be provided in two or more. By wrapping the cable 3 with two third elastic bodies 216 and pressing them to achieve uniform sealing, the universality and sealing reliability of the device are improved. Correspondingly, the two third elastic bodies 216 are also provided in a tearable layer structure, which can include multiple elastic bands arranged in layers. In this way, the aperture of the wire passing hole 211 can also be adjusted accordingly.

[0044] Specifically, the abutting member 22 comprises a pressing plate 225 and a connecting bolt 226 arranged at both ends of the mounting member 1. Each connecting bolt 226 is used to drive the end of each pressing plate 225 to press the third elastic body 216, so as to drive the third elastic body 216 to deform and expand. The pressing plate 225 and the connecting bolt 226 structure compress the third elastic body 216 from both ends at the same time, making it expand radially, thereby tightly filling the mounting hole 121 and clamping the cable 3. This symmetrical force application method avoids the deflection caused by unilateral pressure, ensuring the uniformity of the sealing.

[0045] In the above embodiment, the third elastic body 216 is provided in an arc-shaped elastic body, two arc-shaped elastic bodies are separately installed in the circular mounting hole 121, a bolt through hole is provided on the mounting member 1, the two ends of the arc-shaped elastic body are respectively provided with a pressing plate 225, and the arc-shaped elastic body is combined with the connecting bolt 226 to form a whole. When the connecting bolt 226 is tightened, the two third elastic bodies 216 will shrink in the axial direction under the mechanical force of the two end pressing plates 225, and expand in the radial direction, so as to fill the annular space between the cable 3 and the mounting hole 121, and form a stable and reliable sealing structure. Due to the limiting of the flange of the pressing plate and the friction force, the third elastic body 216 will not displace or come off under the pressure of external medium or vibration. In specific applications, the third elastic body 216 will elastically deform under the combined action of the pressure at both ends and its own elastic force, so as to fill the gaps between the cable 3 and the elastic member 21, the elastic member 21 and the mounting hole 121, and the joint surfaces between the two third elastic bodies 216, and achieve sealing with a certain pressure resistance. The foregoing plugging structure 2 can save more space for the installation of single or large diameter cables, and is faster, simpler and more convenient to install.

[0046] Further, the mounting piece 1 comprises a support plate 11 and a mounting frame 12, the support plate 11 is used to be connected with the bottom plate of the cabinet. The support plate 11 can be two or more pieces to facilitate installation. The support plate 11 is provided with a mounting port 111, and the mounting frame 12 is arranged in the mounting port 111. It should be noted that the inside of the mounting frame 12 forms a mounting hole 121. In the first embodiment, the mounting frame 12 can be arranged in a rectangular shape, so as to form a rectangular mounting hole 121. In the second embodiment, the mounting frame 12 is arranged in a cylindrical shape, so as to form a circular mounting hole 121. The side wall of the corresponding elastic piece 21 is in abutment with the side wall of the mounting frame 12.

[0047] Further, the support plate 11 is coated with a fireproof sealing layer 13 except the mounting port 111. The self-leveling fireproof sealing agent (thickness not less than 8mm) can be coated after the support plate 11 is connected with the bottom plate of the cabinet, so as to form the fireproof sealing layer 13, fill the gap around the bottom plate of the cabinet, the joint of the support plate 11, and achieve the fireproof sealing of the bottom surface of the cabinet.

[0048] It should be further noted that the two embodiments of the sealing structure 2 can be used alone or in combination, and the number and type of the cable 3 are determined. The utility model does not limit this.

[0049] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A sealing device, characterized in that, include: The mounting component has mounting holes, and its periphery is used for connection with the base plate of the cabinet; and, At least one sealing structure includes an elastic member disposed in the mounting hole and a clamping member disposed in the mounting member. The elastic member has a wire-passing hole for a cable to pass through. The clamping member is used to press against the elastic member so that the elastic member is interference-fitted with the mounting hole and the elastic member clamps the cable located in the wire-passing hole.

2. The sealing device according to claim 1, characterized in that, The sealing structure includes multiple elastic elements, each of which is sequentially arranged adjacent to the mounting hole. When the clamping member presses against the elastic element, each of the elastic elements is squeezed and fitted together with the mounting hole in an interference fit.

3. The sealing device according to claim 2, characterized in that, The sealing structure further includes at least one partition disposed on the mounting member, the partition being used to separate the mounting hole, and one side of a portion of the elastic member being fitted with the partition.

4. The sealing device according to claim 2, characterized in that, The elastic element includes a first elastic body and a second elastic body nested together. The second elastic body is provided with the wire hole. The hardness of the first elastic body is greater than that of the second elastic body.

5. The sealing device according to claim 4, characterized in that, The second elastic body includes multiple layers of elastic rings nested together, with the diameter of each elastic ring decreasing sequentially; and / or, the second elastic body includes multiple elastic bands stacked and surrounding each other, wherein both the elastic rings and the elastic bands are used to adjust the size of the through hole.

6. The sealing device according to claim 5, characterized in that, The elastic element includes a main elastic element and a secondary elastic element. The main elastic element and the secondary elastic element have the same structure. The size of the secondary elastic element is smaller than that of the main elastic element. The wire-passing hole of the main elastic element is used to pass through the cable. The wire-passing hole of the secondary elastic element is provided with a blind plugging module to provide blocking redundancy.

7. The sealing device according to claim 2, characterized in that, The clamping element includes two mounting blocks, a tapered tensioning block, and a driving bolt. One side of one mounting block abuts against the side wall of the mounting hole, and one side of the other mounting block abuts against the elastic element. A movable channel is formed between the two mounting blocks, and the shape of the movable channel is adapted to the shape of the tapered tensioning block. The driving bolt is located in the movable channel, and the tapered tensioning block is threadedly connected to the driving bolt. The driving bolt is used to drive the tapered tensioning block to move up and down along the movable channel, so as to drive the two mounting blocks closer or further apart.

8. The sealing device according to claim 1, characterized in that, The sealing structure includes an elastic element, which includes at least two third elastic bodies. Each of the third elastic bodies surrounds and forms the cable passage hole. When the clamping member presses against the elastic element, each of the third elastic bodies squeezes against each other to make an interference fit with the mounting hole and clamps the cable in the cable passage hole.

9. The sealing device according to claim 8, characterized in that, The clamping member includes pressure plates and connecting bolts disposed at both ends of the mounting member. Each connecting bolt is used to drive each pressure plate to press the end of the third elastic body, thereby driving the third elastic body to deform and expand.

10. The sealing device according to claim 1, characterized in that, The mounting component includes a support plate and a mounting frame. The support plate is used to connect with the bottom plate of the cabinet. The support plate is provided with a mounting opening, and the mounting frame is located at the mounting opening. The mounting hole is formed inside the mounting frame, and the support plate is coated with a fireproof sealing layer except for the mounting opening.

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