Device for protecting wiring terminal strip of electric cabinet

Abstract

The invention provides a device for protecting a wiring terminal strip of an electric cabinet, and relates to the technical field of electric power systems, the device comprises a protection block, the protection block is detachably mounted in front of wiring holes of the terminal strip, a plurality of plugging holes are formed in the protection block in a penetrating manner, and the plugging holes can be in butt joint with the wiring holes in the terminal strip; and a plurality of protective rotating plates are rotationally mounted on the protective block. According to the device for protecting the wiring terminal strip of the electric cabinet, provided by the invention, the protection block, the protection rotating plate, the rubber strip, the extrusion structure, the sealing cylinder and the transmission structure are arranged, so that tightening screws and exposed parts of cable terminals on the terminal strip can be protected after wiring of a cable and the terminal strip is completed; according to the utility model, dust falling on the cable in long-time use is reduced, damage caused by corrosion of metal at the wiring position is reduced, short circuit caused by dust accumulation is reduced, and when the cable is pulled by the outside, the cable can also be fixed, and the terminal strip and the wiring are protected.

Description

Technical Field

[0001] The invention relates to the technical field of power systems, and in particular to a device for protecting a terminal block of an electric cabinet. Background Art

[0002] In the power system, the relay protection device is used to protect the power system and its components (generators, transformers, transmission lines, busbars, etc.) from damage. It is an important equipment in the substation. Its safe operation is directly related to the safe operation of the power grid and even the power system. The terminal block is an electrical component used to connect lines in electrical equipment. The number of terminal points in each row of the terminal block is different, and its model can be determined according to the needs of engineering technical parameters. A row of wiring holes is usually opened on the terminal block, and the cable terminals are inserted into them. Then, the screws on the terminal block are tightened to press and fix the cable terminals in the wiring holes to complete the wiring of the cable terminals, which is convenient for maintenance and construction.

[0003] After long-term use, a lot of dust will fall on the terminal block, especially on the exposed tightening screws and terminals of the terminal block, which may cause a short circuit and accelerate the oxidation of the terminal surface, increase resistance, increase heat, and may cause malfunctions, and even cause accidental injuries to workers during maintenance. Summary of the invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes a device for protecting a terminal block of an electric cabinet.

[0005] The present invention provides a device for protecting a terminal block of an electric cabinet, comprising a protection block, which is detachably mounted in front of a wiring hole of the terminal block, a plurality of plug holes are formed through the protection block, and the plug holes can be connected to the wiring holes on the terminal block, a plurality of protection rotating plates are rotatably mounted on the protection block, the number of the protection rotating plates is the same as the number of the plug holes and is arranged one by one, and the protection rotating plates can be rotatably covered on the tightening screws on the terminal block; A hidden groove is provided on the inner wall of the plug hole, and two rubber strips are installed in the hidden groove. The distance between the two rubber strips is adjustable. The two rubber strips are respectively located on both sides of the plug hole. An extrusion structure is provided between the protective rotating plate and the rubber strips. When the protective rotating plate rotates, the extrusion structure can convert the rotation of the protective rotating plate into the sliding movement of the two rubber strips. A storage groove is provided on one side of the protection block close to the terminal row, and a sealing cylinder is slidably installed in the storage groove. A transmission structure is provided between the protection rotating plate and the sealing cylinder. When the protection rotating plate rotates, the transmission structure can convert the rotation movement of the protection rotating plate into the telescopic movement of the sealing cylinder in the storage groove.

[0006] Preferably, the extrusion structure comprises a No. 1 drive bar, a No. 2 drive bar, a driving rack, a trapezoidal block, a reset member and a linkage assembly; the No. 1 drive bar and the No. 2 drive bar are both slidably installed in the hidden groove, the two protection rotating plates are respectively located on the side where the No. 1 drive bar and the No. 2 drive bar are close to each other, and the linkage assembly is located between the No. 1 drive bar and the No. 2 drive bar, and when the No. 1 drive bar slides in the hidden groove, the linkage assembly can convert the sliding action of the No. 1 drive bar into the synchronous and opposite sliding action of the No. 2 drive bar; The driving rack is fixedly mounted on the trapezoidal block, the trapezoidal block is slidably mounted on the protective block, the inclined surface of the trapezoidal block is slidably matched with the inclined surface of the first driving bar, and the end of the protective rotating plate is meshed with the driving rack; The reset member is used to drive the first drive bar and the second drive bar to slide and reset in the hidden groove.

[0007] Preferably, the linkage assembly includes a No. 1 rack, a transmission gear and a No. 2 rack; there are two No. 1 racks, and the two No. 1 racks are respectively fixedly connected to the two ends of the No. 1 drive bar, and there are two transmission gears, and the two transmission gears are rotatably installed in the hidden groove, and the two transmission gears are respectively located on both sides of the plug-in hole, and the No. 1 rack is meshed with the transmission gear, and the number of the No. 2 racks is the same as the number of the No. 1 racks and is arranged one by one, and the two No. 2 racks are fixedly connected to the side of the No. 2 drive bar close to the No. 1 drive bar, and the No. 2 racks are meshed with the transmission gear.

[0008] Preferably, the reset member comprises a reset spring; two ends of the reset spring are respectively connected to the second rack and the inner wall of the hidden groove.

[0009] Preferably, a plurality of telescopic rods are installed on the side where the first driving bar and the second driving bar are close to each other, and the plurality of telescopic rods are linearly arranged along the length direction of the first driving bar, and the two rubber strips are respectively bonded to the two rows of telescopic rods.

[0010] Preferably, the transmission structure includes a driving gear and a gear rod; the driving gear is rotatably installed in the protective block, the trapezoidal block is meshed with the driving gear, a telescopic hole is provided in the protective block for slidingly cooperating with the gear rod, one end of the gear rod is fixedly connected to the sealing cylinder, and the gear rod is meshed with the driving gear.

[0011] Preferably, both sides of the protective rotating plate are fixedly connected with rotating shafts, and the protective rotating plate is rotatably mounted on the protective block via the rotating shafts. A positioning structure is mounted on the protective block, and the positioning structure is used to fix the position of the rotating shaft on the protective block.

[0012] Preferably, the positioning structure includes a positioning pin and a positioning spring; a movable groove is provided in the protective block, the positioning pin is slidably installed in the movable groove, a triangular groove is provided on the outer periphery of the rotating shaft, the end of the positioning pin can be inserted into the triangular groove, the positioning spring is located in the movable groove, and the two ends of the positioning spring are respectively connected to the end of the positioning pin and the inner wall of the end of the movable groove.

[0013] Preferably, a rubber ring is bonded to the end of the sealing cylinder; A rubber block is fixedly connected to the protective rotating plate, and the rubber block can cover the tightening screws on the terminal block.

[0014] The device for protecting the terminal block of an electric cabinet proposed by the present invention has the following beneficial effects: through the provision of a protective block, a protective rotating plate, a rubber strip, an extrusion structure, a sealing cylinder and a transmission structure, after completing the wiring of the cables and the terminal block, the tightening screws on the terminal block and the parts of the cable terminals exposed to the outside can be protected, thereby reducing dust falling on them during long-term use, reducing damage caused by corrosion of the metal at the wiring position, and reducing short circuits caused by dust accumulation. When the cables are pulled by the outside world, the device can also play a fixing role, thereby protecting the terminal block and the wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic diagram of the overall structure of a device for protecting a terminal block of an electric cabinet.

[0016] Figure 2 The present invention is a partial structural schematic diagram of a device for protecting a terminal block of an electric cabinet.

[0017] Figure 3 The present invention provides a side sectional view of a plug-in hole on a protection block in a device for protecting a terminal block of an electric cabinet.

[0018] Figure 4 The present invention provides an end cross-sectional view of the position of a hidden slot on a protection block in a device for protecting a terminal block of an electric cabinet proposed by the present invention.

[0019] Figure 5 The present invention is a schematic structural diagram of a trapezoidal block driving a rack box in a device for protecting a terminal block of an electric cabinet.

[0020] Figure 6 A device for protecting the wiring terminal block of an electric cabinet proposed by the present invention Figure 4 Enlarged view of point A in the middle.

[0021] Figure 7 A device for protecting the wiring terminal block of an electric cabinet proposed by the present invention Figure 4 Enlarged view of point B in the middle.

[0022] Figure 8 The present invention is a schematic structural diagram of a rubber strip, a first drive strip, a first rack and a telescopic rod in a device for protecting a terminal block of an electric cabinet proposed by the present invention.

[0023] Fig. 9 The present invention is a schematic structural diagram of a rubber strip, a second drive strip, a second rack and a telescopic rod in a device for protecting a terminal block of an electric cabinet proposed by the present invention.

[0024] Fig.10 The present invention provides a cross-sectional view of a rubber strip, a first drive strip, a first rack and a telescopic rod in a device for protecting a terminal block of an electric cabinet proposed by the present invention.

[0025] Fig.11 The present invention is a schematic diagram of the end structure of a protective rotating plate in a device for protecting a terminal block of an electric cabinet proposed by the present invention.

[0026] Fig.12 The present invention is a schematic structural diagram of a sealing cylinder, a rubber ring and a gear rod in a device for protecting a terminal block of an electric cabinet proposed by the present invention.

[0027] Fig.13 The present invention is a schematic structural diagram of a positioning pin in a device for protecting a terminal block of an electric cabinet proposed by the present invention.

[0028] In the figure: 1. protective block; 2. plug-in hole; 3. protective rotating plate; 4. rubber strip; 5. sealing cylinder; 6. driving strip No. 1; 7. driving strip No. 2; 8. driving rack; 9. trapezoidal block; 10. rack No. 1; 11. transmission gear; 12. rack No. 2; 13. reset spring; 14. telescopic rod; 15. driving gear; 16. gear rod; 17. rotating shaft; 18. positioning pin; 19. positioning spring; 20. rubber ring; 21. rubber block. DETAILED DESCRIPTION

[0029] Reference Figure 1-Figure 13The present invention proposes a device for protecting a terminal block of an electric cabinet, comprising a protection block 1. Both ends of the protection block 1 can be connected to a mounting frame. The mounting frame is mounted on the electric cabinet by bolts so that the protection block 1 is against the side of the terminal block. The protection block 1 can be detachably mounted in front of the wiring hole of the terminal block. A plurality of plug holes 2 are provided through the protection block 1. The plug holes 2 can be docked with the wiring holes on the terminal block. The staff inserts the wiring terminal at the end of the cable into the plug hole 2, and then into the wiring hole on the terminal block, and then tightens the tightening screw. The cable terminal is pressed and fixed in the wiring hole on the terminal block by the tightening screw to complete the wiring. A plurality of protection rotary devices are rotatably mounted on the protection block 1. Plate 3, the number of protective rotating plates 3 is the same as the number of plug-in holes 2 and is arranged one by one. The protective rotating plate 3 can be rotated to cover the tightening screws on the terminal block; after completing the wiring, the protective rotating plate 3 is rotated again to make the protective rotating plate 3 cover the tightening screws on the terminal block. After long-term use, dust falls on the protective rotating plate 3, reducing dust from falling on the tightening screws, ensuring the protection of the tightening screws, reducing corrosion of the tightening screws due to dust accumulation, and even short circuits. At the same time, the exposed wiring terminals at the ends of the cables are also located in the plug-in holes 2, which can also protect this position, reducing dust from falling on the exposed position of the wiring terminals, and playing a protective role.

[0030] In actual situations, although the opening direction of the plug hole 2 is set horizontally, after long-term use, dust will enter the plug hole 2, which may also cause the terminal to be corroded or even short-circuited. Therefore, the following design is provided: a hidden groove is provided on the inner wall of the plug hole 2, and two rubber strips 4 are installed in the hidden groove. The rubber strips 4 are hollow structures, and the distance between the two rubber strips 4 is adjustable. The two rubber strips 4 are respectively located on both sides of the plug hole 2. An extrusion structure is provided between the protective rotating plate 3 and the rubber strip 4. When the protective rotating plate 3 rotates, the extrusion structure can convert the rotation action of the protective rotating plate 3 into two The rubber strips 4 can slide and slide when the wiring is completed. When the protection rotating plate 3 is rotated, the protection rotating plate 3 can cover and protect the tightening screws. When the protection rotating plate 3 rotates, the two rubber strips 4 are driven to move closer to each other through the extrusion structure, so that the two rubber strips 4 squeeze the cable in the plug hole 2, thereby sealing the plug hole 2 and reducing the external dust from entering the plug hole 2 and reaching the terminal of the cable. At the same time, the cable can be clamped and fixed. When the cable is pulled by external force, it can play a buffering role and reduce the loosening of the cable terminal due to being pulled.

[0031] In addition, although the protective block 1 is installed at the front end of the terminal row, there is still a gap between the protective block 1 and the terminal row, and a small amount of dust will fall on the terminal of the cable through the gap. Therefore, the following design is provided to seal the gap to reduce the dust falling on the terminal of the cable. A storage groove is provided on the side of the protective block 1 close to the terminal row, and a sealing cylinder 5 is slidably installed in the storage groove. A transmission structure is provided between the protective rotating plate 3 and the sealing cylinder 5. When the protective rotating plate 3 rotates, the transmission structure can convert the rotation action of the protective rotating plate 3 into a telescopic action of the sealing cylinder 5 in the storage groove. While the protective rotating plate 3 rotates, the sealing cylinder 5 is driven to extend out of the storage groove through the transmission structure, so that the end of the sealing cylinder 5 is against the end face of the terminal row, so that the plug-in hole 2 and the wiring hole are in a relatively closed space, and the cable terminals located in the closed space can be protected to reduce corrosion or even short circuit caused by dust accumulation.

[0032] like Figure 3 , Figure 4 , Figure 5 , Figure 8 , Fig. 9 and Fig.10As shown in, the extrusion structure includes a No. 1 driving bar 6, a No. 2 driving bar 7, a driving rack 8, a trapezoidal block 9, a reset member and a linkage assembly; an inclined groove is provided on the No. 1 driving bar 6, and the No. 1 driving bar 6 and the No. 2 driving bar 7 are both slidably installed in the hidden groove, and the No. 1 driving bar 6 and the No. 2 driving bar 7 are arranged in parallel, and the two protective rotating plates 3 are respectively located on the side where the No. 1 driving bar 6 and the No. 2 driving bar 7 are close to each other, and the linkage assembly is located between the No. 1 driving bar 6 and the No. 2 driving bar 7. When the No. 1 driving bar 6 slides in the hidden groove, the linkage assembly can convert the sliding action of the No. 1 driving bar 6 into the synchronous and opposite sliding action of the No. 2 driving bar 7, and the driving rack 8 is fixedly installed on the trapezoidal block 9, and the trapezoidal block 9 is slidably installed on the protective block 1, and the inclined surface of the trapezoidal block 9 is slidably matched with the inclined surface of the No. 1 driving bar 6, and the end of the protective rotating plate 3 is meshed with the driving rack 8; between the No. 1 driving bar 6 and the No. 2 driving bar 7 The linkage components are used to make synchronous movements toward or away from each other. The end of the protective rotating plate 3 is an arc surface, and teeth are arranged circumferentially on the arc surface. The teeth are engaged with the driving rack 8. When the protective rotating plate 3 rotates, the gear rack 8 and the trapezoidal block 9 are driven to slide on the protective block 1 through the engagement of the teeth. When the trapezoidal block 9 slides, the inclined surface on the trapezoidal block 9 and the inclined surface groove on the No. 1 driving bar 6 slide in cooperation, thereby driving the No. 1 driving bar 6 to slide in the hidden groove, and then through the transmission of the linkage components, the No. 1 driving bar 6 and the No. 2 driving bar 7 move toward each other, and at the same time drive the two rubber strips 4 to move toward each other, clamp the cable, and continue to squeeze, so that the two rubber strips 4 are deformed at the position where the cable is pressed, and the undeformed two sides move toward each other, thereby clamping the cable and sealing the plug hole 2, reducing dust from falling on the terminal of the cable, and protecting the wiring on the terminal block.

[0033] The reset member is used to drive the No. 1 drive strip 6 and the No. 2 drive strip 7 to slide and reset in the hidden groove. During maintenance work, the protective rotating plate 3 is rotated to reset, and the reset member drives the No. 1 drive strip 6 and the No. 2 drive strip 7 to move away from each other, driving the two rubber strips 4 to move away from each other, and opening the plug-in hole 2 to ensure the insertion and wiring of the cable terminal.

[0034] like Figure 4 , Figure 6 , Figure 8 and Fig. 9As shown in the figure, the linkage assembly includes a No. 1 rack 10, a transmission gear 11 and a No. 2 rack 12; the number of the No. 1 rack 10 is two, and the two No. 1 racks 10 are respectively fixedly connected to the two ends of the No. 1 drive bar 6, and the two No. 1 racks 10 and the No. 1 drive bar 6 form a No. 1 door-shaped structure, the number of the transmission gears 11 is two, and the two transmission gears 11 are rotatably installed in the hidden groove, and the two transmission gears 11 are respectively located on both sides of the plug-in hole 2, the No. 1 rack 10 is meshed with the transmission gear 11, and the number of the No. 2 racks 12 is the same as the number of the No. 1 rack 10 and is one. A corresponding arrangement is provided, the two No. 2 racks 12 are fixedly connected to the side of the No. 2 drive bar 7 close to the No. 1 drive bar 6, the two No. 2 racks 12 and the No. 2 drive bar 7 form a No. 2 door-shaped structure, the No. 2 racks 12 are meshed with the transmission gear 11, when the No. 1 drive bar 6 moves close to the No. 2 drive bar 7, the two No. 1 racks 10 are driven to move synchronously, the No. 1 rack 10 drives the transmission gear 11 to rotate, the rotating transmission gear 11 drives the No. 2 racks 12 to slide, and the sliding No. 2 racks 12 drive the No. 2 drive bar 7 to slide synchronously towards the No. 1 drive bar 6.

[0035] like Figure 4 and Figure 6 As shown in , the reset member includes a reset spring 13; both ends of the reset spring 13 are respectively connected to the second rack 12 and the inner wall of the hidden groove, and the reset spring 13 is always in a compressed state.

[0036] like Figure 2 , Figure 3 , Figure 4 , Figure 8 , Fig. 9 and Fig.10 As shown in the figure, a plurality of telescopic rods 14 are installed on the side where the No. 1 driving strip 6 and the No. 2 driving strip 7 are close to each other. The telescopic rods 14 include an output shaft, a telescopic sleeve and a spring, etc. The cross-sectional view of the telescopic sleeve is rectangular, and the plurality of telescopic rods 14 are linearly arranged along the length direction of the No. 1 driving strip 6. The two rubber strips 4 are respectively bonded to the two rows of telescopic rods 14. It should be noted that the output shaft end of the telescopic rod 14 is fixedly connected to the No. 1 driving strip 6, and the telescopic sleeves abut against each other to form a panel. When the rubber strip 4 abuts against the cable, the output shaft of the telescopic rod 14 is retracted in the telescopic sleeve, so that the rubber strip 4 is deformed to a greater extent, so that it can adapt to cables of different diameters. The rubber strip 4 can better fit the outer periphery of the cable to ensure the sealing effect and reduce the entry of dust.

[0037] like Figure 3 and Fig.12As shown in the figure, the transmission structure includes a driving gear 15 and a toothed rod 16; the driving gear 15 is rotatably installed in the protective block 1, the trapezoidal block 9 is meshed with the driving gear 15, and a telescopic hole slidably matched with the toothed rod 16 is opened in the protective block 1. One end of the toothed rod 16 is fixedly connected to the sealing cylinder 5, and a rubber ring 20 is bonded to the end of the sealing cylinder 5. The toothed rod 16 meshes with the driving gear 15. When the trapezoidal block 9 slides, it drives the driving gear 15 to rotate. The rotating driving gear 15 drives the toothed rod 16 and the sealing cylinder 5 to slide synchronously, so that the sealing cylinder 5 completes the telescopic action in the storage groove, so that the rubber ring 20 at the end of the sealing cylinder 5 abuts against the terminal row. The extrusion deformation of the rubber ring 20 ensures the sealing between the sealing cylinder 5 and the terminal row. At the same time, it reduces the possibility that the sealing cylinder 5 cannot be fully extended or a gap appears between the sealing cylinder 5 and the terminal row when the gap control between the protective block 1 and the terminal row is unqualified.

[0038] like Figure 3 , Figure 4 and Figure 7 As shown in the figure, both sides of the protective rotating plate 3 are fixedly connected with a rotating shaft 17, and the protective rotating plate 3 is rotatably installed on the protective block 1 through the rotating shaft 17. A positioning structure is installed on the protective block 1, and the positioning structure is used to fix the position of the rotating shaft 17 on the protective block 1. The positioning structure includes a positioning pin 18 and a positioning spring 19; a movable groove is provided in the protective block 1, and the positioning pin 18 is slidably installed in the movable groove. A triangular groove is provided on the outer periphery of the rotating shaft 17, and the end of the positioning pin 18 can be inserted into the triangular groove. The positioning spring 19 is located in the movable groove, and the two ends of the positioning spring 19 are respectively connected to the end of the positioning pin 18 and the inner wall of the end of the movable groove. In actual situations In this case, under the rebound action of the reset spring 13, the No. 1 drive bar 6 and the No. 2 drive bar 7 will be driven to move away from each other. At the same time, the No. 1 drive bar 6 will act on the trapezoidal block 9, so that the trapezoidal block 9 will slide and reset, which may cause the protective rotating plate 3 to rotate, resulting in the protective rotating plate 3 being unable to play a protective role in tightening the screws. Therefore, the positioning pin 18 is driven by the rebound action of the positioning spring 19 to be stuck in the triangular groove on the outer periphery of the rotating shaft 17, so that the rotating shaft 17 and the protective rotating plate 3 cannot rotate and reset, ensuring that the tightening screws and wiring points on the terminal block are protected, reducing the corrosion caused by dust falling on them, and even short circuits.

[0039] like Figure 1 and Figure 2As shown in the figure, a rubber block 21 is fixedly connected to the protective rotating plate 3. The rubber block 21 can be a cap structure, a frustum structure, etc., which can cover the tightening screw tightly to reduce dust falling on the tightening screw. It can be designed according to the structure of the terminal block. For example, the tightening screw on the terminal block is located in a hole, and the rubber block 21 is designed as a frustum structure to block the opening of the hole. When the position of the tightening screw on the terminal block is a slotted design, the rubber block 21 can be designed as a cap structure to directly cover the tightening screw. It can be specifically designed according to the structure on the terminal block, and the rubber block 21 can cover the tightening screw on the terminal block.

[0040] 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 device for protecting a terminal block of an electric cabinet, characterized in that: The protective block (1) comprises a protective block (1) which is detachably mounted in front of a wiring hole of a terminal block, a plurality of plug holes (2) being formed through the protective block (1), the plug holes (2) being capable of docking with the wiring holes on the terminal block, a plurality of protective rotating plates (3) being rotatably mounted on the protective block (1), the number of the protective rotating plates (3) being the same as the number of the plug holes (2) and being arranged in a one-to-one correspondence, and the protective rotating plates (3) being capable of rotatably covering the tightening screws on the terminal block; The inner wall of the plug hole (2) is provided with a hidden groove, and two rubber strips (4) are installed in the hidden groove. The distance between the two rubber strips (4) is adjustable. The two rubber strips (4) are respectively located on both sides of the plug hole (2). An extrusion structure is provided between the protective rotating plate (3) and the rubber strips (4). When the protective rotating plate (3) rotates, the extrusion structure can convert the rotation movement of the protective rotating plate (3) into the sliding movement of the two rubber strips (4); A receiving groove is provided on a side of the protection block (1) close to the terminal row, a sealing cylinder (5) is slidably mounted in the receiving groove, a transmission structure is provided between the protection rotating plate (3) and the sealing cylinder (5), and when the protection rotating plate (3) rotates, the transmission structure can convert the rotational movement of the protection rotating plate (3) into a telescopic movement of the sealing cylinder (5) in the receiving groove.

2. A device for protecting a terminal block of an electric cabinet according to claim 1, characterized in that: The extrusion structure comprises a No. 1 drive bar (6), a No. 2 drive bar (7), a driving rack (8), a trapezoidal block (9), a reset member and a linkage assembly; the No. 1 drive bar (6) and the No. 2 drive bar (7) are both slidably mounted in the hidden groove, the two protection rotating plates (3) are respectively located on the side where the No. 1 drive bar (6) and the No. 2 drive bar (7) are close to each other, and the linkage assembly is located between the No. 1 drive bar (6) and the No. 2 drive bar (7); when the No. 1 drive bar (6) slides in the hidden groove, the linkage assembly can convert the sliding action of the No. 1 drive bar (6) into a synchronous and opposite sliding action of the No. 2 drive bar (7); The driving rack (8) is fixedly mounted on the trapezoidal block (9), the trapezoidal block (9) is slidably mounted on the protective block (1), the inclined surface of the trapezoidal block (9) is slidably matched with the inclined surface of the first driving bar (6), and the end of the protective rotating plate (3) is meshed with the driving rack (8); The reset member is used to drive the first drive bar (6) and the second drive bar (7) to slide and reset in the hidden groove.

3. A device for protecting a terminal block of an electric cabinet according to claim 2, characterized in that: The linkage assembly comprises a first rack (10), a transmission gear (11) and a second rack (12); the number of the first rack (10) is two, and the two first racks (10) are respectively fixedly connected to the two ends of the first drive bar (6); the number of the transmission gears (11) is two, and the two transmission gears (11) are rotatably installed in the hidden groove, and the two transmission gears (11) are respectively located on both sides of the plug-in hole (2); the first rack (10) is meshed with the transmission gear (11); the number of the second racks (12) is the same as the number of the first racks (10) and is arranged in a one-to-one correspondence; the two second racks (12) are both fixedly connected to the side of the second drive bar (7) close to the first drive bar (6), and the second racks (12) are meshed with the transmission gear (11).

4. A device for protecting a terminal block of an electric cabinet according to claim 3, characterized in that: The reset member comprises a reset spring (13); two ends of the reset spring (13) are respectively connected to the second rack (12) and the inner wall of the hidden groove.

5. The device for protecting the wiring terminal block of an electric cabinet according to claim 2, characterized in that: A plurality of telescopic rods (14) are installed on the side where the first driving strip (6) and the second driving strip (7) are close to each other. The plurality of telescopic rods (14) are arranged linearly along the length direction of the first driving strip (6). The two rubber strips (4) are respectively bonded to the two rows of telescopic rods (14).

6. A device for protecting a terminal block of an electric cabinet according to claim 2, characterized in that: The transmission structure comprises a driving gear (15) and a gear rod (16); the driving gear (15) is rotatably mounted in the protection block (1); the trapezoidal block (9) meshes with the driving gear (15); a telescopic hole for slidingly cooperating with the gear rod (16) is provided in the protection block (1); one end of the gear rod (16) is fixedly connected to the sealing cylinder (5); and the gear rod (16) meshes with the driving gear (15).

7. The device for protecting the wiring terminal block of an electric cabinet according to claim 1, characterized in that: Both sides of the protective rotating plate (3) are fixedly connected with rotating shafts (17); the protective rotating plate (3) is rotatably mounted on the protective block (1) via the rotating shafts (17); a positioning structure is mounted on the protective block (1); the positioning structure is used to fix the position of the rotating shaft (17) on the protective block (1).

8. A device for protecting a terminal block of an electric cabinet according to claim 7, characterized in that: The positioning structure comprises a positioning pin (18) and a positioning spring (19); a movable groove is provided in the protective block (1), the positioning pin (18) is slidably installed in the movable groove, a triangular groove is provided on the outer periphery of the rotating shaft (17), the end of the positioning pin (18) can be inserted into the triangular groove, the positioning spring (19) is located in the movable groove, and the two ends of the positioning spring (19) are respectively connected to the end of the positioning pin (18) and the inner wall of the end of the movable groove.

9. The device for protecting the terminal block of an electric cabinet according to claim 1, characterized in that: A rubber ring (20) is bonded to the end of the sealing cylinder (5); A rubber block (21) is fixedly connected to the protective rotating plate (3), and the rubber block (21) can cover the tightening screws on the terminal block.

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