Bus duct plug-in switch box

Abstract

The application relates to the technical field of bus duct plug-in technology, and discloses a bus duct plug-in switch box, which comprises a box body, a circuit breaker is fixedly arranged at the inner wall of the box body, a threading block is driven to move synchronously when a pulling cable is pulled, a spring is pushed when the threading block moves, a resistance block and a torsional spring move synchronously, a pushing force is generated on a rotating block when the resistance block moves a certain distance, the rotating block forces the rotating block to exert pressure on an inclined block, when the resistance block moves above the rotating block, the bottom of the resistance block is between a stop block and a box body protrusion, when the threading block moves again, the resistance block cannot rotate due to the resistance of the two, when the cable is removed, the resistance block cannot continue to rotate due to the limitation of the threading block, the resistance block limits the threading block, stress caused by repeated bending is dispersed to different wire body positions, and copper wires at a single fixed point can be prevented from continuously bearing fatigue stress.

Description

Technical Field

[0001] This invention relates to the field of busbar trunking connection technology, specifically to a busbar trunking connection switch box. Background Technology

[0002] Busbar plug-in switch box is a dedicated branch power supply device for busbar systems. It draws branch power from the main busbar through plug-in connection, integrates switches and protection devices, and can independently manage downstream loads. Power supply points can be flexibly added, reduced or adjusted without modifying the main line. When the line has intermittent short circuits or abnormal load fluctuations, and the cause of the fault has not been completely eliminated, the staff will repeatedly disconnect and reconnect the cable during the reclosing, maintenance and trial operation to check the fault point. Each time after plugging and unplugging, the copper core of the cable is repeatedly bent at the same position, which will cause the copper wire to experience metal fatigue, gradually resulting in broken wires and a reduction in the conductor cross-sectional area. After the effective current carrying area decreases, the current carrying capacity of the cable will be greatly reduced. During operation, abnormal local heating will occur at the bending point. Over time, this will accelerate the aging of the cable and even trigger the risk of overheating and fire. In response to the above problems, the following solutions are proposed. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a busbar trunking plug-in switch box, including a box body, a circuit breaker fixedly installed on the inner wall of the box body, and further comprising: The separation mechanism is slidably mounted on the top of the inner wall of the housing; The separation mechanism includes a wire-threading block that is slidably connected to the top of the inner wall of the box, and a spring is fixedly connected to the side wall of the wire-threading block. The protective mechanism is slidably installed on the outer wall of the separation mechanism; The protection mechanism includes a sliding rod that is slidably connected to the side wall of the wire-passing block, and a contact block is rotatably connected to the outer wall of the sliding rod; The heat dissipation mechanism is slidably mounted on the inner wall of the protective mechanism.

[0004] Preferably, the quantification mechanism includes: The follow component slides and is positioned on the top of the inner wall of the housing; A limiting component is rotatably mounted on the bottom inner wall of the housing. When the follower component moves a certain distance, it comes into contact with the limit component and forces the limit component to move.

[0005] Preferably, the protection mechanism includes: The follower component is slidably mounted on the side wall of the follower component; The bonding component is rotatably mounted on the side wall of the following component; Specifically, when the follower component is about to stop moving, it generates a thrust on the bonding component, causing the bonding component to rotate.

[0006] Preferably, the heat dissipation mechanism includes: Ventilation component, which is slidably disposed on the inner wall of follower component; When the ventilation component stops moving, the opposing sides of the follower component are in a state of mutual communication.

[0007] Preferably, the following component includes a resistance block rotatably connected to the side wall of the threading block, and a torsion spring is sleeved on the inner wall of the resistance block; When the cable is pulled, the threading block moves synchronously, and when the threading block moves, it applies a pushing force to the spring, causing the resistance block and the torsion spring to move synchronously.

[0008] Preferably, the limiting component includes a rotating block rotatably connected to the bottom of the inner wall of the box, an inclined block slidably connected to the bottom of the inner wall of the box, a stop block slidably connected to the top of the outer wall of the rotating block, and a one-way block rotatably connected to the top of the inner wall of the box. When the rotating resistance block moves a certain distance, it exerts a pushing force on the rotating block, forcing the rotating block to apply pressure to the tilting block. The right side of the rotating block is at the bottom of the tilting block. When the resistance block moves above the rotating block, the bottom of the resistance block is between the stop block and the box protrusion. When the wire threading block moves again, the resistance block will be resisted by both, making it impossible for the resistance block to rotate. When the staff removes the cable for maintenance, the resistance block cannot continue to rotate due to the restriction of the wire threading block, thus restricting the wire threading block and preventing it from returning to its initial position.

[0009] Preferably, the follower component includes a torsion spring sleeved on the inner wall of the contact block, and a spring sheet fixedly connected to the side wall of the wire-passing block. When the cable is plugged in and bends, it exerts a pushing force on the contact block, causing the contact block to move. During the movement, the contact block rotates along with the cable surface as the cable bends.

[0010] Preferably, the bonding component includes a force-bearing block rotatably connected to the side wall of the threading block, and a plurality of flexible blocks are fixedly connected to the side wall of the force-bearing block; When the sliding rod is about to stop moving, it comes into contact with the threaded groove at the bottom of the force block. As the sliding rod continues to move, it generates a pushing force on the force block, forcing the force block to rotate. When the force block stops rotating, several flexible blocks come into full contact with the surface of the cable.

[0011] Preferably, the ventilation assembly includes a shaped sealing block that is slidably connected to the inner wall of the contact block; As the contact block rotates, the resulting slope causes the irregularly shaped sealing block to gradually move. After the irregularly shaped sealing block moves a certain distance, the blockage of the internal groove of the contact block is released, allowing the gas on the right side of the contact block to move to the left side of the contact block.

[0012] The present invention has the following beneficial effects: (1) When the cable is pulled, the cable-threading block moves synchronously. When the cable-threading block moves, it applies a pushing force to the spring. The resistance block and the torsion spring move synchronously. When the rotated resistance block moves a certain distance, it generates a pushing force on the rotating block, forcing the rotating block to apply pressure to the tilting block. When the resistance block moves above the rotating block, the bottom of the resistance block is between the stop block and the box protrusion. When the cable-threading block moves again, the resistance block will be unable to rotate due to the resistance of both. When the cable is removed, the resistance block cannot continue to rotate due to the restriction of the cable-threading block, thus restricting the cable-threading block. Through the above components, the stress of repeated bending is distributed to different positions of the cable body, preventing the copper wire at a single fixed point from continuously bearing fatigue stress.

[0013] (2) When the cable of the present invention is plugged in and bends, the cable exerts a thrust on the contact block, causing the contact block to move under force. When the contact block moves, it applies a thrust to the spring, forcing the spring to be compressed. During the movement, the contact block is attached to the surface of the cable and rotates with the bending of the cable. During the rotation, it applies pressure to the torsion spring, forcing the torsion spring to be compressed. Through the above components, the cable moves slightly in sync with the axial thrust of the cable, without forming a rigid, locked high-resistance jamming point. This allows the concentrated stress at the bending point of the cable to be fully released, reducing the probability of the insulation layer being worn through.

[0014] (3) When the sliding rod of the present invention is about to stop moving, the protruding block of the sliding rod contacts the threaded groove at the bottom of the force block. As the sliding rod continues to move, the sliding rod pushes the force block through the threaded groove of the force block, forcing the force block to rotate and causing several flexible blocks to rotate synchronously. When the force block stops rotating, several flexible blocks are in full contact with the cable surface. When the cable subsequently deviates slightly, the flexible blocks will also move synchronously with the cable. The movement of the cable will not cause friction on the cable surface. Through the above components, the risk of the cable block sliding is reduced and the protection of the cable insulation layer is improved.

[0015] (4) When the contact block of the present invention rotates, the left side of the irregular sealing block is heavier. After the contact block rotates, the slope generated causes the irregular sealing block to gradually move. After the irregular sealing block moves a certain distance, it stops moving due to the restriction of the protrusion inside the contact block. At this time, the irregular sealing block releases the blockage of the through groove inside the contact block, so that the gas on the right side of the contact block can move to the left side of the contact block through the slot opened after the irregular sealing block moves, thus completing the release of the gas. Through the above components, after the fixation is completed, the gap generated can form an air convection channel, which greatly reduces the thermal resistance of the bonding area and prevents heat accumulation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 This is a schematic cross-sectional view of the separation mechanism of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 For the present invention Figure 3 Enlarged view of point B in the middle; Figure 6 For the present invention Figure 3 Enlarged view of point C in the middle; Figure 7 This is a schematic cross-sectional view of the follower component of the present invention; Figure 8 This is a schematic cross-sectional view of the bonding component of the present invention; Figure 9 This is a cross-sectional schematic diagram of the ventilation component of the present invention.

[0018] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Positioning mechanism; 11. Following component; 12. Limiting component; 13. Housing; 14. Circuit breaker; 111. Wire threading block; 112. Spring; 113. Resistance block; 114. Torsion spring; 121. Rotating block; 122. Inclining block; 123. Stop block; 124. One-way block; 2. Protection mechanism; 21. Follower component; 22. Fitting component; 211. Sliding rod; 212. Contact block; 213. Torsion spring one; 214. Spring; 221. Force-bearing block; 222. Flexible block; 3. Heat dissipation mechanism; 31. Ventilation component; 311. Irregularly shaped sealing block. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1, please refer to Figures 1-7 The present invention is a busbar trunking plug-in switch box, including a box body 13, a circuit breaker 14 fixedly installed on the inner wall of the box body 13, and further including: The separation mechanism 1 is slidably disposed on the top of the inner wall of the housing 13; The separation mechanism 1 includes a wire-threading block 111 that is slidably connected to the top of the inner wall of the housing 13, and a spring 112 is fixedly connected to the side wall of the wire-threading block 111. Protection mechanism 2 is slidably installed on the outer wall of the separation mechanism 1; Among them, the protection mechanism 2 includes a sliding rod 211 that is slidably connected to the side wall of the wire-threading block 111, and a contact block 212 is rotatably connected to the outer wall of the sliding rod 211; Heat dissipation mechanism 3 is slidably disposed on the inner wall of protection mechanism 2.

[0021] The separation mechanism 1 includes: Follower component 11 is slidably set on the top of the inner wall of the housing 13; Limiting component 12 is rotatably disposed at the bottom of the inner wall of the housing 13; After confirming the power is off, the staff will smoothly press the box 13 into the busbar trough and lock it in place. When installing the cable, the main power supply will be disconnected first. A copper cable matching the rated current carrying capacity of the circuit breaker 14 will be selected. After stripping the end insulation layer, the wire core will be crimped with a copper lug of the appropriate specification and connected to the corresponding terminals at the top and bottom of the circuit breaker 14. The fixing screws will be tightened to the standard torque to ensure that all connection points are securely connected without any loose connections. When the staff is wiring, the cable will first pass through the following component 11. When the cable is pulled, the following component 11 will move due to the cable. When the following component 11 moves a certain distance, it will contact the limit component 12 and force the limit component 12 to move.

[0022] Protection agency 2 includes: Follower component 21 is slidably disposed on the side wall of follower component 11; Adhesion component 22 is rotatably disposed on the side wall of follower component 11; When the cable is plugged in, the cable bends and exerts a thrust on the follower component 21, causing the follower component 21 to move under the force. When the follower component 21 is about to stop moving, it exerts a thrust on the bonding component 22, causing the bonding component 22 to rotate.

[0023] Heat dissipation mechanism 3 includes: Ventilation component 31 is slidably disposed on the inner wall of follower component 21; During the movement of the follower component 21, the surface of the follower cable rotates. At this time, the ventilation component 31 moves relative to the follower component 21 under force, and when it stops moving, the two opposite sides of the follower component 21 are in a state of mutual communication.

[0024] Example 2, please refer to Figures 3-9 The present invention is a busbar trunking plug-in switch box. Based on the first embodiment, the following component 11 includes a resistance block 113 rotatably connected to the side wall of the wire-passing block 111, and a torsion spring 114 is sleeved on the inner wall of the resistance block 113. When the worker connects the cable, the cable is first passed through the bottom of the cable threading block 111. Pulling the cable causes the cable threading block 111 to move synchronously. As the cable threading block 111 moves, it applies a pushing force to the spring 112, causing the spring 112 to compress and accumulate potential energy. The resistance block 113 and the torsion spring 114 move synchronously. Figure 3 As shown, when the resistance block 113 moves, it will first come into contact with the protrusion at point D of the housing 13, forcing the resistance block 113 to rotate and applying pressure to the torsion spring 114.

[0025] The limiting component 12 includes a rotating block 121 rotatably connected to the bottom of the inner wall of the housing 13, an inclined block 122 slidably connected to the bottom of the inner wall of the housing 13, a stop block 123 slidably connected to the top of the outer wall of the rotating block 121, and a one-way block 124 rotatably connected to the top of the inner wall of the housing 13. Among them, such as Figure 4 As shown, after the rotating resistance block 113 moves a certain distance, the protrusion at point E on the side wall of the resistance block 113 contacts the left side of the rotating block 121. As the resistance block 113 continues to be pushed by the threading block 111, the protrusion at point E of the resistance block 113 exerts a pushing force on the rotating block 121, forcing the right side of the outer wall of the rotating block 121 to apply pressure to the inclined surface of the inclined block 122. This causes the inclined block 122 to move under force and apply pressure to the spring piece on its own side wall. 121 is positioned at the bottom of the inclined block 122 on the right side. At this point, the rotating block 121 cannot rotate under force again, causing the resistance block 113 to rotate again under the movement of the threading block 111. When the resistance block 113 moves above the rotating block 121, since the rotating block 121 has rotated to its lowest position, the resistance block 113 rotates under the elastic force of the torsion spring 114. After rotation, the bottom of the resistance block 113 is positioned between the stop block 123 and the protrusion at the housing 13D. At this point, the threading block 111... When moving, the resistance block 113 is resisted by both, preventing it from rotating and thus forcing the cable threading block 111 to stop moving again. When the worker removes the cable for maintenance, the cable threading block 111 begins to reset under the elastic force of the spring 112. At this time, the resistance block 113 rotates under the resistance of the stop block 123. When the resistance block 113 contacts the left side of the rotating block 121 again, it applies a pushing force to the rotating block 121, causing it to rotate. The right side of the rotating block 121... The side moves again above the tilting block 122. Due to the restriction of the protrusion at the threading block 111F, the resistance block 113 cannot continue to rotate, and the right side of the rotating block 121 cannot rotate further due to the restriction of the housing 13. This causes the resistance block 113 to restrict the threading block 111, preventing the threading block 111 from returning to its initial position. When the threading block 111 is subjected to force and moves again, the compression of the torsion spring 114 is not significant, allowing the resistance block 113 to pass directly over the top of the rotating block 121. Figure 6 As shown, when the resistance block 113 moves to this position, the protrusion at point G of the resistance block 113 moves upward along with the inclined surface and exerts a pushing force on the one-way block 124. The resistance block 113 rotates continuously. When the protrusion at point G moves to the top of the one-way block 124, the one-way block 124 completes its reset under the action of its own torsion spring. When the cable is removed at this time, the threading block 111 completes its reset under the elastic force of the spring 112 and moves to the initial position. This movement method is repeated so that the cable has three bending points under the restriction of the threading block 111, preventing the same position from being bent continuously.

[0026] The follower component 21 includes a torsion spring 213 sleeved on the inner wall of the contact block 212, and a spring piece 214 fixedly connected to the side wall of the wire block 111. When the cable is plugged in and bends, the cable exerts a pushing force on the contact block 212, causing the contact block 212 to move under the force. When the contact block 212 moves, it exerts a pushing force on the spring 214, forcing the spring 214 to be compressed and accumulating potential energy. During the movement, the contact block 212 rotates along with the cable surface as the cable bends, and during the rotation, it applies pressure to the torsion spring 213, forcing the torsion spring 213 to be compressed.

[0027] The bonding component 22 includes a force-bearing block 221 rotatably connected to the side wall of the threading block 111, and a plurality of flexible blocks 222 are fixedly connected to the side wall of the force-bearing block 221. During its movement, the sliding rod 211 continuously contacts the bottom of the force-bearing block 221. At this time, the sliding rod 211 does not exert any external force on the force-bearing block 221. Figure 8 As shown, when the sliding rod 211 is about to stop moving, the protruding block of the sliding rod 211 contacts the threaded groove at the bottom of the force block 221. As the sliding rod 211 continues to move, it pushes the force block 221 through the threaded groove, forcing the force block 221 to rotate and causing several flexible blocks 222 to rotate synchronously. When the force block 221 stops rotating, the flexible blocks 222 are in full contact with the cable surface. When the cable subsequently deviates slightly, the flexible blocks 222 will also move synchronously with the cable, and will not cause friction on the cable surface due to the movement of the cable.

[0028] Ventilation assembly 31 includes a shaped sealing block 311 that is slidably connected to the inner wall of contact block 212; When the contact block 212 rotates, the irregular sealing block 311 is heavier on the left side. After the contact block 212 rotates, the slope generated causes the irregular sealing block 311 to gradually move. After the irregular sealing block 311 moves a certain distance, it stops moving due to the restriction of the protrusion inside the contact block 212. At this time, the irregular sealing block 311 releases the blockage of the through groove inside the contact block 212, allowing the gas on the right side of the contact block 212 to move to the left side of the contact block 212 through the slot opened after the irregular sealing block 311 moves, thus releasing the gas. When the contact block 212 resets, the irregular sealing block 311 resets under the condition that its left side is heavier.

[0029] One specific application of this embodiment is as follows: After confirming that the power is off, the staff will smoothly press the box 13 into the busbar trough and lock it in place. When installing the cable, first disconnect the main power supply, select a copper cable that matches the rated current carrying capacity of the circuit breaker 14, strip the end insulation layer, and then crimp the wire core to a copper lug of the appropriate specification. Connect the lugs to the corresponding terminals at the top and bottom of the circuit breaker 14 respectively, and tighten the fixing screws to the standard torque to ensure that all connection points are in reliable contact without any loose connections.

[0030] When intermittent short circuits and abnormal load fluctuations occur in the line, and the cause of the fault has not been completely eliminated, staff will repeatedly disconnect and reconnect the cable during reclosing, maintenance, and trial operation to troubleshoot the fault point. Each time the cable is plugged and unplugged, the copper core is repeatedly bent at the same location, causing metal fatigue in the copper wires, gradually leading to wire breakage and a reduction in the conductor cross-sectional area. With the effective current-carrying area decreasing, the cable's current-carrying capacity will be significantly reduced. During operation, abnormal localized heating will occur at the bending point, which, over time, will accelerate cable aging and even trigger the risk of overheating and fire. When staff connect the cable, they first pass the cable through the bottom of the cable guide block 111, and when pulling the cable, the cable guide block 111 moves synchronously. The movement of the cable guide block 111 applies a pushing force to the spring 112, causing the spring 112 to be compressed and accumulate potential energy. The resistance block 113 and the torsion spring 114 move synchronously. Figure 3 As shown, when the resistance block 113 moves, it will first contact the protrusion at point D of the housing 13, forcing the resistance block 113 to rotate and applying pressure to the torsion spring 114, as... Figure 4As shown, after the rotating resistance block 113 moves a certain distance, the protrusion at point E on the side wall of the resistance block 113 contacts the left side of the rotating block 121. As the resistance block 113 continues to be pushed by the threading block 111, the protrusion at point E of the resistance block 113 exerts a pushing force on the rotating block 121, forcing the right side of the outer wall of the rotating block 121 to apply pressure to the inclined surface of the inclined block 122. This causes the inclined block 122 to move under force and apply pressure to the spring piece on its own side wall. 121 is positioned at the bottom of the inclined block 122 on the right side. At this point, the rotating block 121 cannot rotate under force again, causing the resistance block 113 to rotate again under the movement of the threading block 111. When the resistance block 113 moves above the rotating block 121, since the rotating block 121 has rotated to its lowest position, the resistance block 113 rotates under the elastic force of the torsion spring 114. After rotation, the bottom of the resistance block 113 is positioned between the stop block 123 and the protrusion at the housing 13D. At this point, the threading block 111... When moving, the resistance block 113 is resisted by both, preventing it from rotating and thus forcing the cable threading block 111 to stop moving again. When the worker removes the cable for maintenance, the cable threading block 111 begins to reset under the elastic force of the spring 112. At this time, the resistance block 113 rotates under the resistance of the stop block 123. When the resistance block 113 contacts the left side of the rotating block 121 again, it applies a pushing force to the rotating block 121, causing it to rotate. The right side of the rotating block 121... The side moves again above the tilting block 122. Due to the restriction of the protrusion at the threading block 111F, the resistance block 113 cannot continue to rotate, and the right side of the rotating block 121 cannot rotate further due to the restriction of the housing 13. This causes the resistance block 113 to restrict the threading block 111, preventing the threading block 111 from returning to its initial position. When the threading block 111 is subjected to force and moves again, the compression of the torsion spring 114 is not significant, allowing the resistance block 113 to pass directly over the top of the rotating block 121. Figure 6 As shown, when the resistance block 113 moves to this position, the protrusion at point G of the resistance block 113 moves upward with the inclined surface and exerts a pushing force on the one-way block 124. The resistance block 113 rotates continuously. When the protrusion at point G moves to the top of the one-way block 124, the one-way block 124 completes its reset under the action of its own torsion spring. When the cable is removed at this time, the wire threading block 111 completes its reset under the elastic force of the spring 112 and moves to the initial position. This movement method is repeated, so that the cable has three bending points under the restriction of the wire threading block 111, preventing the same position from being continuously bent. Through the above components, the stress of repeated bending is distributed to different positions of the cable body, preventing the copper wire at a single fixed point from continuously bearing fatigue stress, and greatly reducing the risk of local copper wire breakage and a sudden drop in conductor cross-sectional area.

[0031] Utilizing the bending characteristics of the cable, when the cable is plugged in and bends, the cable exerts a pushing force on the contact block 212, causing the contact block 212 to move under the force. As the contact block 212 moves, it applies a pushing force to the spring 214, forcing the spring 214 to compress and accumulate potential energy. Furthermore, during its movement, the contact block 212 rotates along with the cable surface as the cable bends, applying pressure to the torsion spring 213, forcing the torsion spring 213 to compress. After the cable is plugged in... The cable guide block 111 provides resistance at the cable bend. When this resistance completely locks the cable, the stress at the bend cannot be released, resulting in stress concentration at the contact point. Long-term, continuous high-resistance compression will cause irreversible indentation deformation of the insulation layer at the cable contact point, damaging the integrity of the insulation layer structure and accelerating the insulation aging process. Through the above-mentioned components, which move slightly in sync with the axial thrust of the cable, a rigid high-resistance jamming point will not be formed, allowing the concentrated stress at the cable bend to be fully released and reducing the probability of the insulation layer being worn through.

[0032] Utilizing the characteristics of the sliding rod 211's movement, the sliding rod 211 continuously contacts the bottom of the force-bearing block 221 during its movement. At this time, the sliding rod 211 does not exert any external force on the force-bearing block 221, such as... Figure 8 As shown, when the sliding rod 211 is about to stop moving, the protruding block of the sliding rod 211 contacts the threaded groove at the bottom of the force-bearing block 221. As the sliding rod 211 continues to move, it exerts a pushing force on the force-bearing block 221 through the threaded groove, forcing the force-bearing block 221 to rotate under the force, which in turn drives several flexible blocks 222 to rotate synchronously. When the force-bearing block 221 stops rotating, the flexible blocks 222 are in full contact with the cable surface, and if the cable subsequently experiences a slight deviation, the flexible blocks 222 will also move synchronously with the cable. The movement of the cable will not cause friction on the cable surface. After the contact block 212 moves under the push of the cable, the fit between the cable and the wire guide block 111 will decrease. Under the elastic force of the spring 112, the wire guide block 111 will slide relative to the cable. This will not only change the bending point of the cable, but also gradually wear away the outer insulation layer of the cable over a long period of time. In severe cases, it will directly cut through the insulation and expose the internal conductor, greatly reducing the insulation performance and causing a short circuit risk. The above components reduce the risk of the wire guide block 111 sliding and improve the protection of the cable insulation layer.

[0033] Utilizing the rotational characteristics of the contact block 212, when the contact block 212 rotates, due to the heavier left side of the irregularly shaped sealing block 311, the slope generated after the contact block 212 rotates causes the irregularly shaped sealing block 311 to gradually move. After moving a certain distance, the irregularly shaped sealing block 311 stops moving due to the restriction of the internal protrusion of the contact block 212. At this time, the irregularly shaped sealing block 311 releases the seal on the internal through groove of the contact block 212, allowing the gas on the right side of the contact block 212 to move to the left side of the contact block 212 through the slot opened after the irregularly shaped sealing block 311 moves, thus completing the release of the gas. During reset, the irregularly shaped sealing block 311 completes the reset under the heavier condition on its left side. After the cable bend is attached to the wire-passing block 111, the heat that could originally be dissipated through convection and radiation through the shell is completely blocked. The air circulation channel in the attachment area is completely sealed, the thermal resistance is greatly increased, and the local heat cannot be dissipated. The cable is in an overheated state for a long time, the insulation layer ages twice as fast, and there is a risk of partial discharge. Through the above components, after the fixation is completed, the gap can form an air convection channel, which greatly reduces the thermal resistance of the attachment area, prevents heat accumulation, and controls the local temperature rise at the bend within the reasonable range of conventional wiring.

[0034] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A busbar trunking plug-in switch box, comprising a box body (13), wherein a circuit breaker (14) is fixedly installed on the inner wall of the box body (13), characterized in that, Also includes: The separation mechanism (1) is slidably disposed on the top of the inner wall of the box (13); The separation mechanism (1) includes a threading block (111) that is slidably connected to the top of the inner wall of the box (13), and a spring (112) is fixedly connected to the side wall of the threading block (111). The protection mechanism (2) is slidably disposed on the outer wall of the separation mechanism (1); The protection mechanism (2) includes a sliding rod (211) that is slidably connected to the side wall of the threading block (111), and a contact block (212) is rotatably connected to the outer wall of the sliding rod (211). Heat dissipation mechanism (3) is slidably disposed on the inner wall of the protection mechanism (2).

2. The busbar trunking plug-in switch box according to claim 1, characterized in that: The partitioning mechanism (1) includes: Follower component (11), which is slidably disposed on the top of the inner wall of the housing (13); A limiting component (12) is rotatably disposed at the bottom of the inner wall of the housing (13); When the staff is connecting the wires, the cable is first passed through the following component (11), and when the cable is pulled, the following component (11) is moved by the cable.

3. A busbar trunking plug-in switch box according to claim 2, characterized in that: The protection mechanism (2) includes: Follower component (21), which is slidably disposed on the side wall of follower component (11); Adhesion component (22), which is rotatably disposed on the side wall of follower component (11); When the cable is plugged in, the cable bends and exerts a thrust on the follower component (21).

4. A busbar trunking plug-in switch box according to claim 3, characterized in that: The heat dissipation mechanism (3) includes: Ventilation assembly (31), which is slidably disposed on the inner wall of follower assembly (21); During the movement of the follower component (21), the surface of the follower cable rotates, and at this time the ventilation component (31) moves relative to the follower component (21).

5. A busbar trunking plug-in switch box according to claim 4, characterized in that: The following assembly (11) includes a resistance block (113) rotatably connected to the side wall of the threading block (111), and a torsion spring (114) is sleeved on the inner wall of the resistance block (113). The spring (112) is fixedly connected to the inner wall of the box (13) at one end away from the threading block (111), and the two ends of the outer wall of the torsion spring (114) are fixedly connected to the outer wall of the threading block (111).

6. A busbar trunking plug-in switch box according to claim 5, characterized in that: The limiting component (12) includes a rotating block (121) rotatably connected to the bottom of the inner wall of the box (13), an inclined block (122) slidably connected to the bottom of the inner wall of the box (13), a stop block (123) slidably connected to the top of the outer wall of the rotating block (121), and a one-way block (124) rotatably connected to the top of the inner wall of the box (13). Among them, the elastic potential energy of the torsion spring (114) is greater than the elastic potential energy of the spring piece at the side wall of the inclined block (122).

7. A busbar trunking plug-in switch box according to claim 5, characterized in that: The follower component (21) includes a torsion spring (213) sleeved on the inner wall of the contact block (212), and a spring piece (214) is fixedly connected to the side wall of the wire block (111). The outer ends of the torsion spring (213) are fixedly connected to the outer walls of the sliding rod (211). In the initial state, the spring piece (214) contacts the contact block (212).

8. A busbar trunking plug-in switch box according to claim 5, characterized in that: The bonding component (22) includes a force-bearing block (221) rotatably connected to the side wall of the threading block (111), and a plurality of flexible blocks (222) are fixedly connected to the side wall of the force-bearing block (221). The lengths of the various flexible blocks (222) are not the same.

9. A busbar trunking plug-in switch box according to claim 7, characterized in that: The ventilation assembly (31) includes a shaped sealing block (311) that is slidably connected to the inner wall of the contact block (212). In the initial state, the irregularly shaped sealing block (311) is located at a certain slope, which tilts to the right.

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