Cable bridge convenient to install

Abstract

The invention relates to the technical field of power equipment, in particular to a cable bridge convenient to install, which comprises a cable body, a first connecting shell and a second connecting shell, and is characterized in that the end part of the first connecting shell is oppositely provided with a positioning plate used for being inserted into the second connecting shell, and the positioning plate is attached to the inner wall of the second connecting shell; wherein the two sides of the first connecting shell are oppositely provided with first protruding parts, the two sides of the second connecting shell are oppositely provided with second protruding parts, the second protruding parts are provided with positioning holes used for being connected with the rotating shaft in an inserted mode, one end of the rotating shaft is provided with a handle, the other end of the rotating shaft is provided with a screw rod, and the second protruding parts are provided with threaded holes used for being in threaded connection with the screw rod. The first connecting shell and the second connecting shell are connected with a sealing shell in a clamped mode, the sealing shell, the first connecting shell and the second connecting shell define a through groove used for penetrating through the cable body, and compared with an existing mode that a plurality of sets of bolt holes and connecting pieces are adopted for connection and fixation, operation is simpler.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, and in particular to a cable bridge which is easy to install. Background Art

[0002] Cable trays, as carriers for laying various cables, are installation channels for horizontal and vertical wiring systems such as information monitoring and communication facilities in modern intelligent buildings. They are widely used in computer network engineering, fire protection engineering, weak current system engineering, radio and television, and other fields.

[0003] In order to facilitate transportation and installation, existing cable bridges are usually set to a limited length. Therefore, when long-distance bridges are required, multiple sections of bridges usually need to be connected. In the prior art, connecting plates and multiple bolt holes are required to install and fix two sets of cable bridges. The installation efficiency is very low, and this installation method cannot achieve the protective effect. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a cable bridge which is easy to install.

[0005] The present invention provides a cable bridge that is easy to install, comprising a cable body, a first connection shell and a second connection shell, wherein a positioning plate for plugging into the second connection shell is provided at the end of the first connection shell, and the positioning plate is in contact with the inner wall of the second connection shell;

[0006] Wherein, first protrusions are arranged on both sides of the first connection shell, second protrusions are arranged on both sides of the second connection shell, a positioning hole for inserting the rotating shaft is provided on the second protrusion, a handle is provided at one end of the rotating shaft, and a screw is provided at the other end, and a threaded hole for threaded connection with the screw is provided on the second protrusion;

[0007] The first connection shell and the second connection shell are clamped with a sealing shell, and the sealing shell, the first connection shell and the second connection shell are enclosed to form a through groove for penetrating the cable body.

[0008] Preferably, the first connecting shell and the second connecting shell are provided with slots at two opposite ends;

[0009] Wherein, protrusions for engaging with the slots are respectively provided at both ends of the sealing shell.

[0010] Preferably, a first gear is fixedly mounted on the rotating shaft in the middle section between the handle and the second connecting shell, and the first gear is meshed with a first rack plate slidably arranged on one side of the second connecting shell;

[0011] Wherein, a clamping plate for squeezing the protruding portion is fixedly mounted on the first rack plate via a connecting rod.

[0012] Preferably, a support is fixedly installed on the connecting sections of the first connecting shell and the second connecting shell, and a plurality of groups of first arc grooves are provided on the support. In the first connecting shell, a protective shell is installed on the support through an elastic mechanism, and a plurality of groups of second arc grooves are correspondingly provided on both sides of the protective shell. The first arc grooves and the second arc grooves are combined to form a circular through groove for supporting the cable body.

[0013] Preferably, the elastic mechanism comprises a guide rod arranged on the support, the protective shell is slidably connected to the guide rod, and a return spring is arranged on the guide rod;

[0014] Wherein, in the initial state, the top of the protective shell extends to the outside of the first connecting shell.

[0015] Preferably, a plurality of groups of partitions are arranged at intervals in the protective shell, and two partitions and the circular through groove are enclosed to form an isolation chamber for accommodating the cable body.

[0016] Preferably, a thin sheet is provided in each group of isolation chambers.

[0017] The thin sheet and the top of the protective shell are combined to form a bearing cavity for loading fire extinguishing dry powder.

[0018] Preferably, the thin sheet is made of cellophane.

[0019] Preferably, a first airbag is arranged between the supports on both sides, and a second airbag is arranged oppositely in the first connecting shell on both sides of the protective shell, and the second airbag is connected to the first airbag via a hose with a one-way valve.

[0020] Preferably, the installation steps are as follows:

[0021] Step 1: Slidingly insert the positioning plate provided at the end of the first connecting shell into the second connecting shell so that the positioning plate is tightly fitted with the inner wall of the second connecting shell;

[0022] Step 2: Install the cable body through the circular through slot in the first connecting shell and the second connecting shell;

[0023] Step 3: insert the rotating shaft into the positioning hole of the first protruding portion and move it toward the direction of the second protruding portion, turn the handle, and the handle drives the rotating shaft to rotate. During the rotation process, the rotating shaft is threadedly connected with the threaded hole through the screw to achieve connection and fixation of the first connecting shell and the second connecting shell;

[0024] Step 4: Clamp the sealing shell onto the first connecting shell and the second connecting shell to complete the installation of the cable bridge.

[0025] Compared with the related art, the cable bridge provided by the present invention is easy to install and has the following beneficial effects:

[0026] 1) Sliding and inserting the positioning plate provided at the end of the first connecting shell into the second connecting shell so that the positioning plate is tightly fitted with the inner wall of the second connecting shell, and then inserting the rotating shaft into the positioning hole of the first protrusion and moving it in the direction of the second protrusion, by turning the handle, the handle drives the rotating shaft to rotate, and the rotating shaft is threadedly connected with the threaded hole through the screw during the rotation process to realize the connection and fixation of the first connecting shell and the second connecting shell. When the first connecting shell and the second connecting shell need to be disassembled, it is only necessary to rotate the handle in the opposite direction, and finally the cable body is placed in the first connecting shell and the second connecting shell, and then the sealing shell is clamped and fixed on the first connecting shell and the second connecting shell, so as to complete the transportation and installation of the cable body. Compared with the existing method of using multiple groups of bolt holes and connecting sheets for connection and fixation, the operation of the present invention is simpler;

[0027] 2) The present invention rotates the handle, and the handle drives the rotating shaft to rotate, which drives the first gear to rotate. The first gear drives the clamping plate to move toward the sealing shell by meshing with the first rack plate. The clamping plate abuts against the outer side of the protrusion, giving the protrusion a force in the direction of the slot, thereby effectively preventing the protrusion from being separated from the slot, and achieving a better clamping effect;

[0028] 3) The present invention arranges multiple groups of isolation chambers surrounded by partitions in the protective shell, so that when the cable body passes through the circular grooves on both sides, the multiple groups of cable bodies are isolated and separated, avoiding direct contact between two adjacent cable bodies. Therefore, when one group of cable bodies catches fire, the cable body on the adjacent side can be effectively prevented from being ignited. The cable body of the embodiment of the present invention has a better fire prevention effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic structural diagram of a preferred embodiment of a cable bridge that is easy to install provided by the present invention;

[0030] Figure 2 for Figure 1 A schematic diagram of a cable bridge structure that is easy to install Figure 1 ;

[0031] Figure 3 for Figure 1 A schematic diagram of a cable bridge structure that is easy to install Figure 2 ;

[0032] Figure 4 for Figure 1 A schematic diagram of a cable bridge structure that is easy to install Figure 3 ;

[0033] Figure 5 for Figure 1 A schematic diagram of the structure of a return spring in a cable bridge that is easy to install is shown;

[0034] Figure 6 for Figure 1 A schematic diagram of the structure of a protective shell in a cable bridge that is easy to install is shown;

[0035] Figure 7 for Figure 1 A cable bridge that is easy to install Figure 1 The enlarged structural diagram at A in the middle;

[0036] Figure 8 for Figure 1 A schematic diagram of the structure of a first air bag in a cable bridge that is easy to install is shown;

[0037] Fig. 9 for Figure 1 A schematic diagram of the structure of a positioning plate in a cable bridge that is easy to install is shown;

[0038] Fig.10 for Figure 1 A schematic structural diagram of a sealing shell in a cable bridge that is easy to install is shown;

[0039] Fig.11 for Figure 1 A schematic diagram of the structure of an isolation chamber in a cable bridge that is easy to install is shown;

[0040] Fig.12 for Figure 1 A schematic structural diagram of a first arc-shaped groove in a cable bridge that is easy to install is shown.

[0041] Numbers in the figure: 1, cable body; 2, first connecting shell; 3, second connecting shell; 4, sealing shell; 5, rotating shaft; 6, protective shell; 7, connecting section; 8, bearing cavity; 9, support; 201, first protrusion; 202, slot; 203, positioning plate; 301, second protrusion; 401, protrusion; 501, screw; 502, handle; 503, first gear; 504, first rack plate; 505, slide seat; 506, slide groove; 507, clamping plate; 601, push plate; 602, second air bag; 603, guide rod; 604, reset spring; 605, partition; 606, isolation chamber; 607, second arc groove; 608, first air bag; 609, thin sheet; 610, first arc groove. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0043] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0044] Example 1

[0045] See also Figures 1 to 4 An embodiment of the present invention provides a cable bridge that is easy to install. The cable bridge that is easy to install includes a cable body 1, a first connection shell 2, and a second connection shell 3. The first connection shell 2 is provided with a positioning plate 203 for being plugged into the second connection shell 3 at the end thereof. The positioning plate 203 is in contact with the inner wall of the second connection shell 3.

[0046] The first connecting shell 2 has first protrusions 201 disposed on opposite sides, the second connecting shell 3 has second protrusions 301 disposed on opposite sides, the second protrusions 301 have positioning holes for inserting the rotating shaft 5, the rotating shaft 5 has a handle 502 at one end and a screw 501 at the other end, and the second protrusions 301 have threaded holes for threaded connection with the screw 501;

[0047] The first connection shell 2 and the second connection shell 3 are clamped with a sealing shell 4, and the sealing shell 4, the first connection shell 2 and the second connection shell 3 are enclosed to form a through groove for penetrating the cable body 1;

[0048] Specifically, in the present embodiment, when installing the first connecting shell 2 and the second connecting shell 3 on both sides, firstly, the positioning plate 203 arranged at the end of the first connecting shell 2 is slidably inserted into the second connecting shell 3, so that the positioning plate 203 is tightly fitted with the inner wall of the second connecting shell 3, and then the rotating shaft 5 is inserted into the positioning hole of the first protrusion 201 and moved toward the direction of the second protrusion 301, and the handle 502 is rotated to drive the rotating shaft 5 to rotate. During the rotation process, the rotating shaft 5 is threadedly connected with the threaded hole through the screw 501 to realize the connection and fixation of the first connecting shell 2 and the second connecting shell 3. When the first connecting shell 2 and the second connecting shell 3 need to be disassembled, it is only necessary to rotate the handle 502 in the opposite direction. Finally, the cable body 1 is placed in the first connecting shell 2 and the second connecting shell 3, and then the sealing shell 4 is clamped and fixed on the first connecting shell 2 and the second connecting shell 3, thereby completing the transportation and installation of the cable body 1. Compared with the existing method of connecting and fixing using multiple groups of bolt holes and connecting sheets, the operation of the present invention is simpler.

[0049] See also Figure 5 As a further solution of the embodiment of the present invention, the first connecting shell 2 and the second connecting shell 3 are provided with slots 202 at both ends thereof;

[0050] The two ends of the sealing shell 4 are respectively provided with protrusions 401 for engaging with the slots 202;

[0051] Specifically, in the present embodiment, when the sealing shell 4 is installed and fixed, since the sealing shell 4, the first connecting shell 2 and the second connecting shell 3 are all made of metal materials and thus have a certain metal elasticity, the sealing shell 4 is manually placed on the first connecting shell 2 and the second connecting shell 3, and the sealing shell 4 is pressed to move toward the first connecting shell 2 and the second connecting shell 3, so that the raised portions 401 at both ends of the sealing shell 4 are snapped into the corresponding slots 202, thereby realizing the installation of the sealing shell 4.

[0052] As a further solution of the embodiment of the present invention, in the middle section between the handle 502 and the second connecting shell 3, a first gear 503 is fixedly installed on the rotating shaft 5, and the first gear 503 is meshed with a first rack plate 504 slidably arranged on one side of the second connecting shell 3;

[0053] A clamping plate 507 for squeezing the protruding portion 401 is fixedly mounted on the first rack plate 504 via a connecting rod;

[0054] Specifically, in the present embodiment, in the prior art, the protrusions 401 at both ends of the sealing shell 4 are engaged in the slots 202. However, during long-term use, due to external force or thermal expansion, it is very easy for the protrusions 401 to be disengaged from the slots 202, thereby affecting the installation tightness of the sealing shell 4. In one embodiment of the present invention, by rotating the handle 502, the handle 502 drives the first gear 503 to rotate during the rotation of the rotating shaft 5. The first gear 503 drives the clamping plate 507 to move toward the sealing shell 4 by meshing with the first rack plate 504. The clamping plate 507 abuts against the outer side of the protrusion 401, giving the protrusion 401 a force in the direction of the slot 202, thereby effectively preventing the protrusion 401 from being disengaged from the slot 202, and achieving a better engagement effect.

[0055] Furthermore, a slide seat 505 is fixedly installed on one side of the first rack plate 504, and the slide seat 505 is slidably connected to a slide groove 506 provided on one side of the second protrusion 301;

[0056] See also Figure 6 As a further solution of the embodiment of the present invention, the first connecting shell 2 and the connecting section 7 of the second connecting shell 3 are both fixedly mounted with a support 9, and a plurality of first arc grooves 610 are provided on the support 9. In the first connecting shell 2, a protective shell 6 is mounted on the support 9 through an elastic mechanism, and a plurality of second arc grooves 607 are correspondingly provided on both sides of the protective shell 6. The first arc grooves 610 and the second arc grooves 607 are enclosed to form a circular through groove for carrying the cable body 1;

[0057] Specifically, in the present embodiment, in order to improve the fire prevention effect of the cable tray, a protective shell 6 is arranged at the connecting section 7 between the first connecting shell 2 and the second connecting shell 3. During installation, the cable body 1 is passed through the circular through groove, so that the protective shell 6 forms a flame retardant cavity at the connecting section 7 between the first connecting shell 2 and the second connecting shell 3. When the cable body 1 on one side catches fire, the fire can be effectively blocked from extending toward the other side, so that the sealing and isolation effect is better and the safety is higher.

[0058] See also Figure 7 As a further solution of the embodiment of the present invention, the elastic mechanism includes a guide rod 603 arranged on the support 9, the protective shell 6 is slidably connected to the guide rod 603, and a return spring 604 is arranged on the guide rod 603;

[0059] Wherein, in the initial state, the top of the protective shell 6 extends to the outside of the first connecting shell 2;

[0060] Specifically, in the present embodiment, in order to make it easier for the cable body 1 to pass through the circular through groove, in the initial state, the protective shell 6 extends to the outside of the first connecting shell 2 and exceeds a certain height under the action of the reset spring 604. Therefore, there is a certain distance between the first arc groove 610 and the second arc groove 607, which is convenient for passing through the cable body 1. After the cable body 1 is installed, when the sealing shell 4 is engaged with the first connecting shell 2 and the second connecting shell 3, the protective shell 6 is pushed toward the support 9 under the extrusion force of the sealing shell 4, so that the first arc groove 610 and the second arc groove 607 are enclosed to form a circular through groove.

[0061] See also Figure 8 As a further solution of the embodiment of the present invention, a plurality of partitions 605 are arranged in the protective shell 6 at intervals, and two partitions 605 and the circular through groove are enclosed to form an isolation chamber 606 for accommodating the cable body 1;

[0062] Specifically, in this embodiment, by arranging multiple groups of isolation chambers 606 surrounded by partitions 605 in the protective shell 6, when the cable body 1 passes through the circular through grooves on both sides, multiple groups of cable bodies 1 are isolated and separated to avoid direct contact between two adjacent cable bodies 1. When a group of cable bodies 1 catches fire, the cable body 1 on the adjacent side can be effectively prevented from being ignited. The cable body 1 in the embodiment of the present invention has a better fireproof effect.

[0063] See also Figure 9-11 As a further solution of the embodiment of the present invention, each group of isolation chambers 606 is provided with a sheet 609, and the sheet 609 is made of cellophane;

[0064] The thin sheet 609 and the top of the protective shell 6 are combined to form a bearing cavity 8 for loading fire extinguishing dry powder;

[0065] Specifically, in this embodiment, the present invention arranges a thin sheet 609 in the isolation chamber 606, and loads dry powder for fire extinguishing in the bearing chamber 8 enclosed by the thin sheet 609 and the top of the protective shell 6. Therefore, in actual application, when the cable body 1 in the isolation chamber 606 catches fire, due to the low ignition point of the cellophane, after the cellophane burns, the bearing chamber 8 is connected with the isolation chamber 606, and the dry powder for fire extinguishing in the bearing chamber 8 directly falls onto the cable body 1 below under the action of gravity, thereby extinguishing the fire point of the cable body 1, thereby effectively preventing the fire point from spreading along the installation direction of the cable body 1, and achieving better fire prevention effect.

[0066] For further information, see Fig.12 A first airbag 608 is arranged between the supports 9 on both sides, and second airbags 602 located on both sides of the protective shell 6 are arranged relatively in the first connecting shell 2, and the second airbag 602 is connected to the first airbag 608 through a hose with a one-way valve;

[0067] Specifically, in the present embodiment, since there is a gap in the connecting section 7 of the first connecting shell 2 and the second connecting shell 3 when the two are connected, when the sealing shell 4 pushes the protective shell 6 to move toward the support 9, the push plates 601 arranged at both ends of the protective shell 6 respectively squeeze the first airbag 608 to shrink. When the first airbag 608 shrinks, the air is squeezed into the second airbag 602 through the hose, thereby forming a seal between the supports 9 on both sides, sealing the gap, and preventing external moisture from entering the protective shell 6.

[0068] Example 2

[0069] A cable bridge that is easy to install, the installation steps are as follows:

[0070] Step 1: Slidingly insert the positioning plate 203 provided at the end of the first connecting shell 2 into the second connecting shell 3, so that the positioning plate 203 is tightly fitted with the inner wall of the second connecting shell 3;

[0071] Step 2: Install the cable body 1 through the circular through slot in the first connecting shell 2 and the second connecting shell 3;

[0072] Step 3: insert the rotating shaft 5 into the positioning hole of the first protruding portion 201 and move it toward the direction of the second protruding portion 301, turn the handle 502, and the handle 502 drives the rotating shaft 5 to rotate. During the rotation process, the rotating shaft 5 is threadedly connected with the threaded hole through the screw 501 to achieve the connection and fixation of the first connecting shell 2 and the second connecting shell 3;

[0073] Step 4: snap the sealing shell 4 onto the first connecting shell 2 and the second connecting shell 3 to complete the installation of the cable bridge.

[0074] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0075] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0076] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A cable bridge that is easy to install, comprising a cable body (1), a first connection shell (2) and a second connection shell (3), characterized in that: A positioning plate (203) for being inserted into the second connecting shell (3) is disposed at the end of the first connecting shell (2), and the positioning plate (203) is in contact with the inner wall of the second connecting shell (3); Wherein, first protrusions (201) are arranged oppositely on both sides of the first connection shell (2), second protrusions (301) are arranged oppositely on both sides of the second connection shell (3), a positioning hole for inserting the rotating shaft (5) is provided on the second protrusion (301), a handle (502) is provided at one end of the rotating shaft (5), and a screw rod (501) is provided at the other end, and a threaded hole for threaded connection with the screw rod (501) is provided on the second protrusion (301); A sealing shell (4) is clamped on the first connecting shell (2) and the second connecting shell (3); the sealing shell (4), the first connecting shell (2) and the second connecting shell (3) are combined to form a through groove for penetrating the cable body (1).

2. A cable bridge that is easy to install according to claim 1, characterized in that: The first connecting shell (2) and the second connecting shell (3) are provided with clamping grooves (202) at two opposite ends. Wherein, protrusions (401) for engaging with the slots (202) are respectively provided at both ends of the sealing shell (4).

3. A cable bridge that is easy to install according to claim 2, characterized in that: A first gear (503) is fixedly mounted on the rotating shaft (5) between the handle (502) and the middle section of the second connecting shell (3), and the first gear (503) is meshed with a first rack plate (504) slidably arranged on one side of the second connecting shell (3); A clamping plate (507) for pressing the protruding portion (401) is fixedly mounted on the first rack plate (504) via a connecting rod.

4. The cable bridge that is easy to install according to claim 1, characterized in that: A support (9) is fixedly mounted on the connecting sections (7) of the first connecting shell (2) and the second connecting shell (3), and a plurality of first arc-shaped grooves (610) are provided on the support (9). In the first connecting shell (2), a protective shell (6) is mounted on the support (9) via an elastic mechanism, and a plurality of second arc-shaped grooves (607) are correspondingly provided on both sides of the protective shell (6). The first arc-shaped grooves (610) and the second arc-shaped grooves (607) are combined to form a circular through groove for supporting the cable body (1).

5. A cable bridge that is easy to install according to claim 4, characterized in that: The elastic mechanism comprises a guide rod (603) arranged on the support (9), the protective shell (6) is slidably connected to the guide rod (603), and a return spring (604) is arranged on the guide rod (603); Wherein, in the initial state, the top of the protective shell (6) extends to the outside of the first connecting shell (2).

6. A cable bridge that is easy to install according to claim 5, characterized in that: A plurality of groups of partitions (605) are arranged at intervals in the protective shell (6); two partitions (605) and the circular through groove are combined to form an isolation chamber (606) for accommodating the cable body (1).

7. The cable bridge that is easy to install according to claim 6, characterized in that: Each group of isolation chambers (606) is provided with a thin sheet (609); The thin sheet (609) and the top of the protective shell (6) are combined to form a carrying cavity (8) for loading fire extinguishing dry powder.

8. The cable bridge that is easy to install according to claim 7, characterized in that: The thin sheet (609) is made of cellophane.

9. The cable bridge that is easy to install according to claim 8, characterized in that: A first airbag (608) is arranged between the supports (9) on both sides, and a second airbag (602) located on both sides of the protective shell (6) is arranged in the first connecting shell (2) opposite to each other, and the second airbag (602) is connected to the first airbag (608) via a hose with a one-way valve.

10. The cable bridge that is easy to install according to claim 9, characterized in that: The installation steps are as follows: Step 1: Slidingly inserting the positioning plate (203) provided at the end of the first connecting shell (2) into the second connecting shell (3), so that the positioning plate (203) is tightly fitted to the inner wall of the second connecting shell (3); Step 2: Install the cable body (1) through the circular through slot into the first connecting shell (2) and the second connecting shell (3); Step 3: insert the rotating shaft (5) into the positioning hole of the first protruding portion (201) and move it toward the direction of the second protruding portion (301), turn the handle (502), and the handle (502) drives the rotating shaft (5) to rotate. During the rotation process, the rotating shaft (5) is threadedly connected to the threaded hole through the screw rod (501) to achieve connection and fixation of the first connecting shell (2) and the second connecting shell (3); Step 4: Engage the sealing shell (4) on the first connecting shell (2) and the second connecting shell (3) to complete the installation of the cable bridge.

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