Carrier communication power line anti-interference transmission device

Abstract

The invention belongs to the technical field of power communication, particularly relates to an anti-interference transmission device for a carrier communication power line, and aims to solve the problems that an existing power network bridge is easy to fall off when a hook is driven by a spring for clamping, a connecting wire is relatively long and is inconvenient to fix and the like. In order to solve the problem that signal transmission is affected due to the fact that a wiring terminal is prone to loosening due to the fact that the wiring terminal drives a pressing plate to abut against through a screw, an electric appliance cabinet and a plurality of power bridges are included, a mounting plate is detachably arranged in the electric appliance cabinet, and a connecting frame is connected between the electric appliance cabinet and the mounting plate through a first bolt and a nut ring. The installation plate is located below the main brake, rapid installation and fixation of the power network bridge are achieved, wiring terminals of the power network bridge are effectively protected through cooperative use of the protection mechanism and the clamping mechanism, mistaken touch and damage in the maintenance process are avoided, meanwhile, convenience of operation and maintenance is fully considered through design in the electric appliance cabinet, and the maintenance cost is reduced. And the use efficiency and the safety of the whole device are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power communication, and in particular to a carrier communication power line anti-interference transmission device. Background Art

[0002] Carrier communication power line anti-interference transmission devices, including power bridges, power cats and other equipment, have been widely used in smart homes, industrial automation, remote control, power meter reading, smart building management and other fields. In these application scenarios, the device, with its advantages of no need for additional wiring, use of existing power line networks, high-speed data transmission and strong anti-interference capabilities, has achieved efficient, stable and reliable data transmission on power lines through a series of advanced technical means, bringing great convenience to people's daily life and work, and producing significant benefits.

[0003] After searching, the utility model with announcement number CN212811698U discloses an industrial-grade power bridge for photoelectric broadband. The power bridge has the following disadvantages during use: 1. When installed in an electrical cabinet, the cabinet will shake due to the mechanical vibration of the external connection. If the hook is fixed by a spring, it may fall off during use, thus affecting the stability of the equipment.

[0004] 2. After installation, the connecting wires may be long and difficult to fix. At the same time, the terminal blocks are connected by screws driving the pressure plate to contact. Under the influence of long-term vibration, the screws may become loose, thus affecting the stable transmission of the signal. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art that the electrical cabinet will vibrate with the externally connected machinery during use, such as the hook connection driven by a spring, which may fall off during use; the connecting wires are relatively long and inconvenient to fix, and the wiring terminals use screws to drive the pressure plate to contact, which may become loose under long-term vibration, affecting the transmission of signals, and a carrier communication power line anti-interference transmission device is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A carrier communication power line anti-interference transmission device, comprising an electrical cabinet and a plurality of power network bridges, wherein a mounting plate is detachably provided in the electrical cabinet, a connecting frame is connected between the electrical cabinet and the mounting plate via a first bolt and a nut ring, and the mounting plate is located below a main gate and is used for protecting cables below the main gate; Multiple sets of second guide rails and first guide rails are all arranged on the mounting plate. Two guide bars used in conjunction with the second guide rails and the first guide rails are fixedly arranged on one side of the power network bridge, which are used to plug the power network bridge into the mounting plate. The second guide rails are slidably arranged on the mounting plate, and the outside is flush with the electrical components in the electrical cabinet without external force, so as to reserve installation space for the power network bridge. Multiple groups of card connection mechanisms are arranged on the mounting plate and used to fix the plugged power network bridge; Multiple sets of protection mechanisms are all set on the mounting plate and used in conjunction with the clamping mechanism to protect the wiring terminals at one end of the power grid bridge to avoid accidental contact during maintenance; An inner door is provided in the electrical cabinet, and a support block corresponding to the power grid bridge is detachably provided on one side of the inner door for supporting the power grid bridge. When the inner door is closed, the gate head in the electrical cabinet is exposed for external operation.

[0007] In a possible design, the clamping mechanism includes two fixing bars fixed on one side of the mounting plate, two second guide rods are slidably provided through the top of the fixing bars, sliding bars are fixedly provided at the ends of the two groups of the second guide rods close to each other, a plurality of pins are fixedly provided at the bottom of the sliding bars, positioning holes corresponding to the pins are provided at the tops of the second guide rails, the first guide rails and the guide bars, the power grid bridge is fixed when the pins pass through the guide bars and are inserted into the second guide rails and the first guide rails, a spring is provided on the outer wall of the second guide rod, and the two ends of the spring are respectively fixedly connected to the fixed bar and the sliding bar on the sides close to each other, providing moving power for the sliding bar.

[0008] In a possible design, multiple groups of first guide columns are slidably passed through one side of the mounting plate, one end of each group of the first guide columns is fixedly connected to the corresponding second guide rail, the outer wall of the first guide column is provided with a tension spring, the two ends of the tension spring are respectively fixedly connected to the outer wall of the first guide column and one side of the mounting plate, and the second guide rail is away from the mounting plate in the absence of external force.

[0009] In a possible design, a fixing seat is fixed on the top of one end of the guide bar, a plug rod is fixed on one side of the fixing seat, and multiple groups of fixing blocks are fixed on one side of the mounting plate. A first plug hole corresponding to the plug rod is opened on one side of the fixing block. When the plug rod is inserted into the first plug hole, one end of the two guide bars is plugged into the first guide rail to further limit the power grid bridge.

[0010] In a possible design, the protective mechanism includes a limit plate fixed on one side of the first guide rail, and a plurality of sliding columns corresponding to the terminal screws are penetrated on one side of the limit plate. A screwdriver bit used in conjunction with the screws is fixed on one end of the sliding column to prevent the screwdriver from directly contacting the screws in the terminal.

[0011] In a possible design, a connecting strip is fixedly provided on one side of the sliding bar, and a limit strip is fixedly provided on the side of the two connecting strips close to each other. A groove matching the sliding column is provided on one side of the limit strip and the limit plate. When the sliding bar moves, the limit strip can be driven to contact one side of the sliding column.

[0012] In a possible design, a rotating shaft is rotatably provided on one side of the limit plate, and a fixed sleeve on the outer wall of the rotating shaft is provided with a cam located between the two limit strips. A wrench is fixedly provided on the outer wall of the rotating shaft for manually turning the rotating shaft. Positioning grooves for positioning the cam are provided on the sides of the two limit strips that are close to each other. When the convex part of the cam moves into the positioning groove, it can drive the sliding bar to move in the opposite direction, thereby releasing the fixation of the power grid bridge.

[0013] In a possible design, a second clamping plate and a first clamping plate are fixedly provided on the side close to each other of the power grid bridge and the limit plate, and a wire groove is provided on the side close to each other of the second clamping plate and the first clamping plate for clamping and fixing the connecting wires.

[0014] In a possible design, a plurality of groups of second sockets are provided on one side of the inner door, and limiting columns are inserted into the second sockets, and one end of each group of limiting columns is fixedly connected to the corresponding support block. A through hole is provided on one side of the inner door, and a plurality of second bolts are passed through the through hole. One end of the second bolts is threadedly connected to the support block for fixing the support block. A rectangular opening corresponding to the power grid bridge is provided on one side of the support block, and the power grid bridge is located in the rectangular opening after the inner door is closed to provide support for the power grid bridge.

[0015] In a possible design, a waist-shaped hole is opened on one side of the sliding bar, and two clamping columns are fixedly provided at one end of the supporting block. After the inner door is closed, the clamping columns are located in the corresponding waist-shaped holes to further limit the sliding bar.

[0016] Beneficial Effects

[0017] In the present invention, the carrier communication power line anti-interference transmission device can protect the cables under the main switch by installing the power network bridge on the mounting plate, and connecting the mounting plate and the electrical cabinet through a connecting frame, which can effectively prevent the cables from being accidentally touched during the installation process, thereby improving the safety of the installation process.

[0018] In the present invention, the carrier communication power line anti-interference transmission device is slidably arranged on the mounting plate through the second guide rail, and is flush with the electrical components in the electrical cabinet without external force, thereby reserving sufficient installation space for the power network bridge, making full use of the internal space of the electrical cabinet, avoiding space waste, and ensuring the compactness and neatness of the internal structure of the electrical cabinet; In the present invention, the carrier communication power line anti-interference transmission device provides a good clamping and fixing effect for the connecting wires through the first clamping plate and the second clamping plate and the wire grooves set between the power network bridge and the limit plate, effectively preventing the wires from being messy and improving the neatness and safety of the equipment. The sliding column and the screwdriver bit on the limit plate effectively prevent the screwdriver from directly contacting the screws in the terminal, reducing the risk of damage to the terminal due to improper operation, and improving the safety and service life of the equipment.

[0019] In the present invention, the carrier communication power line anti-interference transmission device provides a stable support for the power bridge through the limiting column on the inner door, the second bolt and the rectangular opening design of the support block, ensuring the stability and safety of the power bridge after the inner door is closed. In addition, the detachable design of the support block is also convenient for adjustment or replacement as needed, and the waist-shaped hole on the sliding bar is used in conjunction with the clamping column on the support block, which further enhances the limiting effect of the power bridge during installation and prevents displacement or loosening due to external force. In the present invention, not only the rapid installation and fixation of the power grid bridge is realized, but also the protection mechanism and the clamping mechanism are used in combination to effectively protect the wiring terminals of the power grid bridge, thereby avoiding accidental contact and damage during maintenance. At the same time, the design inside the electrical cabinet also fully considers the convenience of operation and maintenance, thereby improving the use efficiency and safety of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional structural schematic diagram of a carrier communication power line anti-interference transmission device proposed by the present invention; Figure 2 A schematic diagram of the connection structure between a power network bridge and a mounting plate of a carrier communication power line anti-interference transmission device proposed by the present invention; Figure 3 A schematic diagram of the structure of a connecting frame and a mounting plate of a carrier communication power line anti-interference transmission device proposed by the present invention; Figure 4 A schematic diagram of the guide rail installation structure of a carrier communication power line anti-interference transmission device proposed by the present invention; Figure 5 for Figure 4 A schematic diagram of the enlarged structure of the middle part A; Figure 6 A schematic diagram of the structure of a power network bridge of a carrier communication power line anti-interference transmission device proposed by the present invention; Figure 7 A schematic cross-sectional structure diagram of a limit plate of a carrier communication power line anti-interference transmission device proposed by the present invention; Figure 8This is a schematic diagram of the support block structure of a carrier communication power line anti-interference transmission device proposed by the present invention.

[0021] In the figure: 1, electrical cabinet; 2, inner door; 3, mounting plate; 4, power grid bridge; 5, connecting frame; 6, first bolt; 7, first guide rail; 8, nut ring; 9, first guide column; 10, tension spring; 11, second guide rail; 12, fixing block; 13, first jack; 14, fixing bar; 15, second guide rod; 16, spring; 17, sliding bar; 18, waist-shaped hole; 19, pin column; 20, limit plate; 21, first Clamp; 22. Limiting strip; 23. Connecting strip; 24. Cam; 25. Wrench; 26. Positioning groove; 27. Second clamp; 28. Wire groove; 29. ​​Guide strip; 30. Fixed seat; 31. Insert rod; 32. Groove; 33. Sliding column; 34. Batch bit; 35. Second plug hole; 36. Limiting column; 37. Through hole; 38. Second bolt; 39. Support block; 40. Rectangular opening; 41. Clamp column; 42. Rotating shaft. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Example 1

[0024] Reference Figure 1-Figure 8 A carrier communication power line anti-interference transmission device, which is used in the field of power communication, includes: an electrical cabinet 1 and a power network bridge 4. A removable mounting plate 3 is designed inside the electrical cabinet 1. The mounting plate 3 is fixed to the electrical cabinet 1 with a connecting frame 5 through a first bolt 6 and a nut ring 8. This design facilitates the removal and installation of the mounting plate 3, so as to facilitate subsequent maintenance and replacement. The mounting plate 3 is located below the main switch in the electrical cabinet 1, and can effectively protect the cables below the main switch.

[0025] On the mounting plate 3, multiple sets of second guide rails 11 and first guide rails 7 are arranged. The second guide rails 11 are designed to be sliding and can slide freely on the mounting plate 3. When there is no external force, the outer portion thereof is flush with the electrical components in the electrical cabinet 1, and sufficient space is reserved for the installation of the power network bridge 4. Two guide bars 29 are fixedly arranged on one side of the power network bridge 4. The two guide bars 29 cooperate with the second guide rails 11 and the first guide rails 7 to enable the power network bridge 4 to be conveniently plugged into the mounting plate 3 for quick installation. The power network bridge 4 adopts the LechenTek industrial-grade power network bridge WD-1201M-DIN (D01).

[0026] In order to fix the plugged power bridge 4, multiple groups of clamping mechanisms are provided on the mounting plate 3. The clamping mechanism includes two fixed bars 14 fixed on one side of the mounting plate 3, and two second guide rods 15 are slidably provided on the top of each fixed bar 14. A sliding bar 17 is fixed to one end of the second guide rod 15 close to each other, and a plurality of pins 19 are fixed to the bottom of the sliding bar 17. When the guide bar 29 of the power bridge 4 is inserted between the second guide rail 11 and the first guide rail 7, the pins 19 can penetrate the guide bar 29 and be inserted into the positioning holes in the second guide rail 11 and the first guide rail 7 by pushing the sliding bar 17, thereby fixing the power bridge 4. In addition, the outer wall of the second guide rod 15 is provided with a spring 16, and the two ends of the spring 16 are respectively fixedly connected to the fixed bar 14 and the sliding bar 17, providing the sliding bar 17 with power to move, so that the clamping process is smoother.

[0027] In order to keep the second guide rail 11 away from the mounting plate 3 in the absence of external force, a plurality of groups of first guide posts 9 are slidably provided on one side of the mounting plate 3. One end of each group of first guide posts 9 is fixedly connected to the second guide rail 11, and a tension spring 10 is sleeved on the outer wall of the first guide post 9. The two ends of the tension spring 10 are respectively fixedly connected to the outer wall of the first guide post 9 and one side of the mounting plate 3, and the elastic force of the tension spring 10 ensures that the second guide rail 11 can be kept away from the mounting plate 3 in the absence of external force.

[0028] At the same time, a fixing seat 30 is fixed on the top of one end of the guide bar 29, a plug rod 31 is fixed on one side of the fixing seat 30, and multiple groups of fixing blocks 12 are fixed on one side of the mounting plate 3. A first plug hole 13 corresponding to the plug rod 31 is opened on one side of the fixing block 12. When the plug rod 31 is inserted into the first plug hole 13, one end of the two guide bars 29 is plugged into the first guide rail 7 to further limit the power grid bridge 4.

[0029] In addition, in order to protect the connection terminals at one end of the power network bridge 4 and avoid accidental contact during maintenance, multiple sets of protection mechanisms are provided on the mounting plate 3, and these protection mechanisms are used in conjunction with the clamping mechanisms.

[0030] An inner door 2 is provided in the electrical cabinet 1, and a support block 39 corresponding to the power bridge 4 is detachably provided on one side of the inner door 2. The support block 39 is designed to support the power bridge 4 to ensure the stability of the power bridge 4 during installation and fixing. At the same time, after the inner door 2 is closed, the gate head in the electrical cabinet 1 is still exposed for operation and maintenance by external operators.

[0031] In order to prevent the screwdriver from directly contacting the screws in the terminal during maintenance, the protection mechanism is specially designed with a limit plate 20. The limit plate 20 is fixedly arranged on one side of the first guide rail 7, and is penetrated by a plurality of sliding columns 33 corresponding to the screws of the terminal. A screwdriver bit 34 used in conjunction with the screw is fixed at one end of the sliding column 33, and an opening adapted to the screwdriver is provided at the other end. In this way, when it is necessary to tighten or loosen the screw, it is only necessary to align the screwdriver bit 34 with the screw and operate the sliding column 33 with the screwdriver, without directly contacting the screw with the screwdriver, thereby protecting the terminal and its internal structure, and preventing electric shock.

[0032] A connecting strip 23 is fixedly provided on one side of the sliding bar 17, and a limiting strip 22 is fixedly provided on the side of the two connecting strips 23 close to each other. At the same time, a groove 32 matching the sliding column 33 is provided on one side of the limiting strip 22 and the limiting plate 20. When the sliding bar 17 is moving, the limiting strip 22 will move with it and abut against one side of the sliding column 33, so that the sliding column 33 can be limited and the wiring terminal can be protected when not in use.

[0033] refer to Figure 1-Figure 8 , improved on the basis of Example 1: In order to facilitate the release of the fixation of the power grid bridge 4 when needed, a rotating shaft 42 is rotatably provided on one side of the limit plate 20, and a cam 24 located between the two limit strips 22 is fixedly sleeved on the outer wall of the rotating shaft 42. In addition, a wrench 25 is fixedly provided on the outer wall of the rotating shaft 42 to facilitate manual rotation of the rotating shaft 42. Positioning grooves 26 for positioning the cam 24 are provided on the sides of the two limit strips 22 that are close to each other. When it is necessary to release the fixation, it is only necessary to use the wrench 25 to pull the rotating shaft 42 so that the convex part of the cam 24 moves into the positioning groove 26, and the shape characteristics of the cam can be used to drive the sliding bar 17 to move in the opposite direction, thereby releasing the fixation of the power grid bridge 4.

[0034] In order to better fix the connecting wires, the power grid bridge 4 and the limiting plate 20 are respectively fixed with a second clamping plate 27 and a first clamping plate 21 on the side close to each other. The second clamping plate 27 and the first clamping plate 21 are both provided with a wire groove 28 on the side close to each other. The design of the wire groove 28 allows the connecting wires to be clamped and fixed therein, thereby avoiding the wires from being scattered and possibly damaged.

[0035] In order to facilitate the installation of the support block 39, a plurality of groups of second plug holes 35 are provided on one side of the inner door 2, and the limiting posts 36 are inserted into the second plug holes 35. One end of each group of limiting posts 36 is fixedly connected to the corresponding support block 39, so that the support block 39 can be firmly inserted into the inner door 2. In addition, a through hole 37 is provided on one side of the inner door 2, and a plurality of second bolts 38 are provided through the through hole 37, and one end of the second bolt 38 is threadedly connected to the support block 39, further enhancing the fixing effect of the support block 39. A rectangular opening 40 corresponding to the power network bridge 4 is also provided on one side of the support block 39. After the inner door 2 is closed, the power network bridge 4 is located in the rectangular opening 40, providing necessary support for the power network bridge 4.

[0036] In order to further limit the position of the sliding bar 17 after the inner door 2 is closed, a waist-shaped hole 18 is opened on one side of the sliding bar 17, and two clamping columns 41 are fixedly provided at one end of the support block 39. After the inner door 2 is closed, the clamping columns 41 will be located in the corresponding waist-shaped holes 18. This design not only increases the stability of the sliding bar 17, but also prevents it from accidentally moving in a non-operating state.

[0037] In the present application, when in use, first, the connecting frame 5 is installed inside the electrical cabinet 1 through the first bolt 6 and the nut ring 8, and is located below the outlet terminal of the main switch, and then the mounting plate 3 is installed on the connecting frame 5 through the first bolt 6 and the nut ring 8, and the cables below the main switch are protected by the mounting plate 3; Then, the power network bridge 4 is placed on one side of the second guide rail 11, and the second guide rail 11 is located between the two guide bars 29. At this time, the power network bridge 4 is pushed to move on the second guide rail 11, so that the two guide bars 29 can be stuck on the second guide rail 11. Then, the power network bridge 4 is pushed to drive the second guide rail 11 to approach the mounting plate 3 until the second guide rail 11 is parallel to the first guide rail 7. The power network bridge 4 is pushed to move again, so that one side of the power network bridge 4 moves to the first guide rail 7. At the same time, the insertion rod 31 is inserted into the first insertion hole 13 on the fixing block 12 to ensure that the second guide rail 11 will not move under the action of the tension spring 10. Then, the connecting wire is inserted into the terminal, and then the sliding column 33 is inserted into the hole of the limit plate 20 in turn, so that the screwdriver bit 34 contacts the screw on the terminal, and then the sliding column 33 is screwed by a screwdriver. The rotation of the sliding column 33 can drive the screwdriver bit 34 to rotate, and the rotation of the screwdriver bit 34 can drive the screw in the terminal to rotate, and drive the internal pressure plate to fix the connecting wire; After the fixation is completed, the power network bridge 4 is continuously pushed to move so that the second clamping plate 27 approaches the first clamping plate 21 to clamp the connecting wire until the fixing seat 30 contacts one side of the fixing block 12. At this time, the wrench 25 is pulled to drive the rotating shaft 42 to rotate, and the rotation of the rotating shaft 42 can drive the cam 24 to rotate. When the convex part of the cam 24 is away from the positioning groove 26, the sliding bar 17 can move downward under the action of the spring 16, driving the multiple pins 19 to be inserted into the positioning holes of the guide bar 29, the first guide rail 7 and the second guide rail 11 respectively, and the power network bridge 4 is limited again. The downward movement of the sliding bar 17 can drive the connecting bar 23 to move downward, and the downward movement of the connecting bar 23 can drive the limiting bar 22 to move downward, and the sliding column 33 is limited by a plurality of grooves 32 to prevent the terminal screws from being exposed after installation; Then close the inner door 2. During the swinging process, the support block 39 will be driven to approach the power bridge 4 until the power bridge 4 is stuck in the rectangular opening 40. At this time, the clamping column 41 at one end of the support block 39 moves into the waist-shaped hole 18, and the sliding bar 17 is limited again to avoid damage to the spring 16 during use. At the same time, it can support the power bridge 4, and finally close the protective door on the electrical cabinet 1.

[0038] However, as is well known to those skilled in the art, the working principle and wiring method of the power grid bridge 4 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selections according to their needs or convenience.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A carrier communication power line anti-interference transmission device, characterized in that: It comprises an electrical cabinet (1) and a plurality of power network bridges (4); a mounting plate (3) is detachably provided in the electrical cabinet (1); a connecting frame (5) is connected between the electrical cabinet (1) and the mounting plate (3) via a first bolt (6) and a nut ring (8); the mounting plate (3) is located below a main gate and is used to protect cables below the main gate; A plurality of sets of second guide rails (11) and first guide rails (7) are all arranged on the mounting plate (3); two guide bars (29) used in conjunction with the second guide rails (11) and the first guide rails (7) are fixedly arranged on one side of the power network bridge (4) and are used to plug the power network bridge (4) into the mounting plate (3); and the second guide rails (11) are slidably arranged on the mounting plate (3) and are flush with the electrical components in the electrical cabinet (1) when no external force is applied, thereby reserving installation space for the power network bridge (4); A plurality of sets of clamping mechanisms are arranged on the mounting plate (3) and are used to fix the plugged power network bridge (4); A plurality of sets of protection mechanisms are arranged on the mounting plate (3) and are used in conjunction with the clamping mechanism to protect the wiring terminals at one end of the power network bridge (4) to avoid accidental contact during maintenance; The electrical cabinet (1) is provided with an inner door (2), and a support block (39) corresponding to the power grid bridge (4) is detachably provided on one side of the inner door (2) for supporting the power grid bridge (4), and when the inner door (2) is closed, the gate head in the electrical cabinet (1) is exposed for external operation.

2. A carrier communication power line anti-interference transmission device according to claim 1, characterized in that: The clamping mechanism comprises two fixing bars (14) fixedly arranged on one side of the mounting plate (3); two second guide rods (15) are slidably provided through the top of the fixing bars (14); sliding bars (17) are fixedly arranged at the ends of the two sets of the second guide rods (15) close to each other; a plurality of pins (19) are fixedly arranged at the bottom of the sliding bars (17); the tops of the second guide rail (11), the first guide rail (7) and the guide bar (29) are all provided with positioning holes corresponding to the pins (19); when the pins (19) pass through the guide bar (29) and are inserted into the second guide rail (11) and the first guide rail (7), the power grid bridge (4) is fixed; the outer wall of the second guide rod (15) is sleeved with a spring (16); the two ends of the spring (16) are respectively fixedly connected to the fixing bar (14) and the sliding bar (17) close to each other, so as to provide moving power for the sliding bar (17).

3. A carrier communication power line anti-interference transmission device according to claim 1, characterized in that: A plurality of groups of first guide columns (9) are slidably provided through one side of the mounting plate (3), one end of each group of the first guide columns (9) being fixedly connected to a corresponding second guide rail (11), a tension spring (10) being sleeved on the outer wall of the first guide column (9), the two ends of the tension spring (10) being fixedly connected to the outer wall of the first guide column (9) and one side of the mounting plate (3), respectively, and the second guide rail (11) being away from the mounting plate (3) in the absence of external force.

4. A carrier communication power line anti-interference transmission device according to claim 2, characterized in that: A fixing seat (30) is fixedly provided at the top of one end of the guide bar (29), a plug rod (31) is fixedly provided on one side of the fixing seat (30), a plurality of fixing blocks (12) are fixedly provided on one side of the mounting plate (3), a first plug hole (13) corresponding to the plug rod (31) is provided on one side of the fixing block (12), and when the plug rod (31) is inserted into the first plug hole (13), one end of the two guide bars (29) is plugged into the first guide rail (7) to further limit the position of the power grid bridge (4).

5. The carrier communication power line anti-interference transmission device according to claim 2, characterized in that: The protection mechanism comprises a limit plate (20) fixedly arranged on one side of the first guide rail (7), a plurality of sliding posts (33) corresponding to the terminal screws passing through one side of the limit plate (20), and a screwdriver bit (34) used in conjunction with the screws fixedly arranged at one end of the sliding post (33) to prevent the screwdriver from directly contacting the screws in the terminal.

6. A carrier communication power line anti-interference transmission device according to claim 5, characterized in that: A connecting strip (23) is fixedly provided on one side of the sliding strip (17), and a limiting strip (22) is fixedly provided on the mutually adjacent sides of the two connecting strips (23). A groove (32) matching the sliding column (33) is provided on one side of the limiting strip (22) and the limiting plate (20), so that when the sliding strip (17) moves, the limiting strip (22) can be driven to contact one side of the sliding column (33).

7. A carrier communication power line anti-interference transmission device according to claim 6, characterized in that: A rotating shaft (42) is rotatably provided on one side of the limit plate (20); a cam (24) located between two limit strips (22) is fixedly provided on the outer wall of the rotating shaft (42); a wrench (25) is fixedly provided on the outer wall of the rotating shaft (42) for manually turning the rotating shaft (42) for rotation; positioning grooves (26) for positioning the cam (24) are provided on the mutually adjacent sides of the two limit strips (22); when the convex part of the cam (24) moves into the positioning groove (26), it can drive the sliding bar (17) to move in the opposite direction, thereby releasing the fixation of the power grid bridge (4).

8. The carrier communication power line anti-interference transmission device according to claim 1, characterized in that: A second clamping plate (27) and a first clamping plate (21) are fixedly provided on the mutually adjacent sides of the power network bridge (4) and the limit plate (20), respectively; and a wire groove (28) is provided on the mutually adjacent sides of the second clamping plate (27) and the first clamping plate (21) for clamping and fixing the connecting wires.

9. The carrier communication power line anti-interference transmission device according to claim 2, characterized in that: A plurality of groups of second plug holes (35) are provided on one side of the inner door (2), and limiting columns (36) are inserted into the second plug holes (35). One end of each group of limiting columns (36) is fixedly connected to a corresponding support block (39). A through hole (37) is provided on one side of the inner door (2), and a plurality of second bolts (38) are provided through the through hole (37). One end of the second bolts (38) is threadedly connected to the support block (39) for fixing the support block (39). A rectangular opening (40) corresponding to the power network bridge (4) is provided on one side of the support block (39). When the inner door (2) is closed, the power network bridge (4) is located in the rectangular opening (40) to provide support for the power network bridge (4).

10. A carrier communication power line anti-interference transmission device according to claim 9, characterized in that: A waist-shaped hole (18) is provided on one side of the sliding bar (17), and two clamping columns (41) are fixedly provided on one end of the supporting block (39); after the inner door (2) is closed, the clamping columns (41) are located in the corresponding waist-shaped holes (18), further limiting the position of the sliding bar (17).

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