Anti-reflux quick power-taking plug-in box with buffer interface

Abstract

The application relates to the technical field of electrical equipment, in particular to a reverse-flow-preventing quick power-taking plug-in box with a buffer interface, which comprises a box body, a circuit breaker and a plug pin assembly are arranged in the box body, the plug pin assembly comprises a power-taking part and a floating connection part, the power-taking part is slidably arranged on one side of the box body, one end of the power-taking part in the box body is electrically connected with the circuit breaker through a flexible connecting piece, and the other end of the power-taking part extending out of the box body is used for being connected with a corresponding plug-in interface of a bus duct; the grounding plug pin in the power-taking part is longer than the phase wire plug pin and the neutral wire plug pin, the front end of the grounding plug pin is provided with an elongated section which can axially slide, the power-taking part is elastically slid through a moving block, a guide rod and the first spring through the floating connection part, the first spring and the buffer column structure, impact energy is absorbed during plugging, the buffer column prevents damage caused by limit compression, the buffer interface function is realized, mechanical stress in the plugging process is significantly reduced, and fatigue fracture caused by concentrated stress on the root of the plug pin is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical equipment, in particular to a reverse flow prevention quick power taking plug-in box with a buffer interface. BACKGROUND

[0002] The plug-in box belongs to bus duct accessories, mainly extending and expanding the branch line of the bus duct, and generally has a circuit breaker in the plug-in box. The plug-in box is connected with the bus duct through a plug pin, the plug pin is connected with the incoming line end of the circuit breaker, the electrical equipment is connected with the outgoing line end of the circuit breaker, and the circuit is disconnected and protected through the circuit breaker, so that the current of the main line of the bus duct is shunted to the electrical equipment, and the use and maintenance are very convenient. When overload or short circuit occurs in the circuit, the circuit breaker quickly cuts off the circuit to protect the safety of the equipment and the line.

[0003] The plug pin of the traditional plug-in box is fixed in the box body, and the interface between the plug pin and the bus duct is in rigid contact. Although the initial assembly accuracy can be ensured, the mechanical impact in the instant of plugging and unplugging cannot be alleviated, the root of the plug pin repeatedly bears concentrated stress, the micro defects of the material gradually expand in long-term use, and finally irreversible structural failure is caused. The related technologies improve the reliability by enhancing the structural strength of the plug pin or increasing the number of plug pins, but these improvements often sacrifice the operation convenience. Thicker plug pins require doubled plugging force, and more contact structures introduce new risks of uneven contact. SUMMARY

[0004] The present application aims to provide a reverse flow prevention quick power taking plug-in box with a buffer interface to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions.

[0006] A reverse flow prevention quick power taking plug-in box with a buffer interface, comprising a box body, a circuit breaker and a plug pin assembly arranged in the box body, the plug pin assembly comprising a power taking part and a floating connection part for fixing the power taking part, the power taking part being slidably arranged on one side of the box body, one end of the power taking part in the box body being electrically connected with the circuit breaker through a flexible connecting piece, and the other end of the power taking part extending out of the box body being used for connecting with a corresponding plug-in interface of a bus duct; wherein the length of a grounding plug pin in the power taking part is greater than that of phase plug pins and neutral plug pins, and the front end of the grounding plug pin is provided with an elongated section which can axially slide.

[0007] Preferably, the floating connection part comprises a base, a moving block is slidingly installed on the base, an insulating pressing piece is arranged on the moving block, the insulating pressing piece is fixedly connected with the power taking part through bolts, a guide rod is fixedly installed on the side of the moving block away from the busbar row, a containing cavity is formed in the base, the guide rod extends into the containing cavity and is fixedly installed with a limiting plate, a first spring is sleeved on the guide rod, and two ends of the first spring are fixedly connected with the inner top surface of the containing cavity and the limiting plate, respectively.

[0008] Preferably, the inner top surface of the containing cavity is fixedly installed with a buffer column in contact with the limiting plate, and the buffer column is symmetrically arranged; wherein the buffer column comprises an elastic body and an insulating sheath wrapped around the outer periphery of the elastic body.

[0009] Preferably, an installation groove is formed in the base, the installation groove is through with the containing cavity, the installation groove has an expansion part, a pressing rod is slidingly installed in the installation groove, a limiting ring is fixedly installed on the pressing rod, the limiting ring is located in the expansion part, a second spring is sleeved on the pressing rod, and two ends of the second spring are fixedly connected with the limiting ring and the inner bottom surface of the expansion part, respectively, sliding grooves are formed in the two side surfaces of the containing cavity, a pressing plate is slidingly installed between the two sliding grooves, and the pressing plate is in contact with the limiting plate; wherein a connecting seat is fixedly installed on the pressing plate, a connecting pin is fixedly installed on the end of the pressing rod close to the connecting seat, the connecting pin is rotationally connected with the connecting seat, a torsional spring is installed on the connecting pin, and two ends of the torsional spring are fixedly connected with the pressing rod and the side wall of the connecting seat, respectively.

[0010] Preferably, symmetrically arranged receiving tables are fixedly installed in the grounding pin, and elastic clamps are fixedly connected between the extension sections and the receiving tables.

[0011] Preferably, a push rod is fixedly installed on the tail of the grounding pin, a first micro switch is arranged on the base, a second micro switch is fixedly installed on the execution end of the push rod, and the first micro switch and the second micro switch are collinear; wherein the first micro switch, the second micro switch and the circuit breaker are connected in series in the control power circuit.

[0012] Preferably, L-shaped support arms are rotationally installed on the two sides of the pressing plate, a support column is fixedly installed between the two L-shaped support arms, and the second micro switch is fixedly installed on the support column.

[0013] Preferably, a current direction detection element is fixedly installed in the box, a controller is installed on the outer wall of the box, and the controller is signal connected with the current direction detection element and the circuit breaker; wherein the controller is signal connected with a remote server.

[0014] Compared with the prior art, the application has the following beneficial effects:

[0015] 1. The butt joint structure is composed of the floating connection part, the first spring and the buffer column, the power taking part is elastically slid by the moving block, the guide rod and the first spring, the impact energy is absorbed during the insertion, the buffer column prevents the damage caused by the limit compression, the buffer interface function is realized, the mechanical stress during the insertion and extraction is significantly reduced, the fatigue fracture caused by the concentrated stress at the root of the pin is avoided, and the service life of the plug-in assembly is prolonged.

[0016] 2. The lengthened grounding pin is provided with a slidable lengthened section and an elastic clamping structure, the length of the grounding pin is greater than that of the phase wire and the neutral wire pin, the front end is provided with a 5-8mm compressible lengthened section, the built-in elastic clamping realizes automatic expansion and contraction, the safe time sequence of grounding first and energizing later, and de-energizing first and grounding later is strictly realized, and it is ensured that the equipment shell is reliably grounded during the whole operation process.

[0017] 3. The double microswitches are introduced to realize the common line interlocking and the pressing plate linkage unlocking mechanism, when the grounding is in place and the plug-in is locked, the closing circuit is only turned on, the pressing plate must be pressed to unlock before being pulled out, the closing circuit is simultaneously cut off, the closed loop control of not grounding and not closing, and not de-energizing and not pulling out is realized. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure schematic diagram of the application;

[0019] Figure 2 It is the three-dimensional structure schematic diagram of the application;

[0020] Figure 3 It is the pin assembly structure schematic diagram of the application;

[0021] Figure 4 It is the power taking part structure schematic diagram of the application;

[0022] Figure 5 It is the internal structure schematic diagram of the grounding pin of the application;

[0023] Figure 6 It is the floating connection part structure schematic diagram of the application;

[0024] Figure 7 It is the pressing rod and the upper part structure schematic diagram of the application;

[0025] Figure 8 It is the control principle diagram of the controller of the application.

[0026] In the drawings, the component list represented by each mark is as follows:

[0027] 100, box body;

[0028] 200, circuit breaker; 210, flexible connecting piece;

[0029] 300, pin assembly; 310, power taking part; 311, ground pin; 312, phase pin; 313, neutral pin; 314, extension section; 315, elastic clamp; 320, floating connecting part; 321, base; 322, moving block; 330, insulating pressing sheet; 340, guide rod; 341, limiting plate; 342, first spring; 350, buffer column; 351, elastic body; 352, insulating sheath; 360, pressing rod; 361, limiting ring; 362, second spring; 363, pressing plate; 364, connecting seat; 365, connecting pin; 366, torsion spring; 367, L-shaped supporting arm; 368, supporting column; 370, push rod; 380, first micro switch; 390, second micro switch; 301, accommodating cavity; 302, mounting groove; 303, capacity expansion part; 304, sliding groove; 305, receiving table;

[0030] 400, current direction detection element; 500, controller. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] Embodiment one: refer to Figures 1-8 A reverse flow prevention quick power taking plug-in box with a buffer interface comprises a box body 100, a circuit breaker 200 and a pin assembly 300.

[0033] The circuit breaker 200 is arranged in the box body 100, the line-in end thereof is electrically connected with the pin assembly 300 through a flexible connecting piece 210, and the line-out end is connected to a load side terminal strip, for realizing on-off control, overload protection and short circuit protection of an electric circuit; the pin assembly 300 comprises a power taking part 310 and a floating connecting part 320 for fixing the power taking part 310, the power taking part 310 comprises a ground pin 311, a phase pin 312 and a neutral pin 313, which are arranged side by side and slidably arranged at one side of the box body 100, one end of the power taking part 310 in the box body 100 is electrically connected with the circuit breaker 200 through the flexible connecting piece 210, the flexible connecting piece 210 is preferably a copper braid with a cross-sectional area not less than 1.2 times of that of a main loop conductor, and the two ends thereof are connected with the pin assembly 300 and the line-in end of the circuit breaker 200 through bolt crimping respectively, so as to ensure that a low-resistance and high-reliability electrical connection is maintained during pin sliding, and one end of the power taking part 310 extending out of the box body 100 is used for being connected with a corresponding plug-in interface of a bus duct, so as to realize a quick power taking function.

[0034] In particular, the length of the grounding pin 311 in the power taking part 310 is greater than the phase line pin 312 and the neutral line pin 313, the front end of the grounding pin 311 is provided with an axially slidable extension 314, the length of the free end of the extension 314 is 5-8 mm, and the extension 314 is kept in an extended state under the action of an internal elastic member, when the plug-in box is inserted into the bus duct, the extension 314 first contacts the grounding conductor in the bus duct, ensuring that the protective grounding is preferentially turned on; when pulled out, the extension 314 is the last to be separated, realizing the last disconnection, and improving safety.

[0035] The plug-in box with a buffer interface provided by the application is inserted into the plug-in interface of the bus duct, the extension 314 at the front end of the grounding pin 311 first contacts the grounding conductor, the protective grounding is completed, then the phase line and the neutral line pin 313 are contacted, the power taking part 310 is moved backward as a whole after being stressed, the floating connection part 320 absorbs the plug-in impact, avoids that the roots of the pins bear concentrated stress, after being inserted into place, the power taking part 310 stops moving, the pins form stable electrical connection with the bus duct, the circuit breaker 200 is closed, the current flows to the load through the flexible connecting piece 210, the flexible connecting piece 210 still maintains stable conduction in a vibrating environment, and false connection is avoided.

[0036] Referring to Figure 3 and Figures 6-7 , the floating connection part 320 includes a base 321, a moving block 322 is slidably installed on the base 321, the moving block 322 can freely slide in the axial direction, an insulating pressing piece 330 is arranged on the moving block 322, the insulating pressing piece 330 is fixedly connected with the power taking part 310 through a bolt, the electrical connection is firm and the electrical insulation is reliable, the length of the insulating pressing piece 330 is greater than that of the power taking part 310, a cantilever pressing structure is formed, a plurality of pin roots can be covered and pressed, the connection stability is improved, and poor contact caused by loose individual pins is prevented, a guide rod 340 is fixedly installed on the side of the moving block 322 away from the bus bar, an accommodating cavity 301 is formed in the base 321, the guide rod 340 extends into the accommodating cavity 301 and is fixedly installed with a limiting plate 341, a first spring 342 is sleeved on the guide rod 340, the two ends of the first spring 342 are fixedly connected with the inner top surface of the accommodating cavity 301 and the limiting plate 341 respectively, in a normal state, the first spring 342 is in a pre-compressed state, provides a reset elastic force for the moving block 322, and absorbs impact energy when the plug-in box is inserted into the bus duct, realizing the buffer interface function.

[0037] The inner top surface of the accommodating cavity 301 is fixedly installed with a buffer column 350 in contact with the limiting plate 341, the buffer column 350 is symmetrically arranged, the buffer column 350 includes an elastic body 351 and an insulating sheath 352 covering the outer periphery of the elastic body 351, when the plug-in impact is large, the limiting plate 341 compresses the buffer column 350, preventing the first spring 342 from being over-compressed and failing, and reducing noise and structural damage at the same time.

[0038] The base 321 is internally provided with a mounting groove 302, the mounting groove 302 is communicated with the accommodating cavity 301, the mounting groove 302 has an expansion part 303, a pressing rod 360 is slidingly installed in the mounting groove 302, a limiting ring 361 is fixedly installed on the pressing rod 360, the limiting ring 361 is located in the expansion part 303, a second spring 362 is sleeved on the pressing rod 360, two ends of the second spring 362 are fixedly connected with the limiting ring 361 and the inner bottom surface of the expansion part 303 respectively, the second spring 362 provides a pre-pressure for the pressing rod 360, the cavity of the accommodating cavity 301 is provided with a sliding groove 304 on each side surface, a pressing plate 363 is slidingly installed between the two sliding grooves 304, the pressing plate 363 is in contact with the limiting plate 341, in particular, the opposite surfaces of the pressing plate 363 and the limiting plate 341 are both inclined surfaces, a connecting seat 364 is fixedly installed on the pressing plate 363, a connecting pin 365 is fixedly installed on one end of the pressing rod 360 close to the connecting seat 364, the connecting pin 365 is rotationally connected with the connecting seat 364, a torsion spring 366 is installed on the connecting pin 365, two ends of the torsion spring 366 are fixedly connected with the side wall of the pressing rod 360 and the connecting seat 364 respectively.

[0039] When the plug-in box is aligned with the bus duct and inserted, the power taking part 310 is forced to move backward as a whole, the moving block 322 drives the guide rod 340 and the limiting plate 341 on the guide rod 340 to slide downward, in this process, the first spring 342 is compressed under force to achieve buffering, the limiting plate 341 pushes the inclined surface of the pressing plate 363 to push the inclined surface of the pressing plate 363, the pressing plate 363 rotates around the shaft and covers on the limiting plate 341 to form mechanical self-locking, preventing the plug pin assembly 300 from being accidentally ejected, in the pulling-out stage, the operator needs to press the pressing rod 360 first, the pressing rod 360 moves downward and moves on the sliding groove 304 to the end of the stroke of the sliding groove 304 through the pressing plate 363, the pressing plate 363 rotates around the shaft or is lifted upward, the inclined surface thereof is separated from below the limiting plate 341, the mechanical locking is released, after unlocking, the plug-in box is manually pulled out, the power taking part 310 is reset under the action of the first spring 342 and contacts the buffer column 350 at the same time, the buffer column 350 absorbs the spring potential energy to reduce the impact.

[0040] Embodiment two: the anti-backflow quick power taking plug-in box with a buffer interface provided in embodiment two is further optimized, an automatic grounding state detection and closing interlocking function is provided, whether the grounding plug pin 311 is completely inserted is monitored in real time through a mechanical linkage mode, it is ensured that the circuit breaker 200 is allowed to close only after "protecting grounding priority connection", preventing the risk of electric shock caused by poor grounding, for reference Figure 4 , Figure 5The grounding pin 311 is a hollow metal conductor, and symmetrically arranged receiving tables 305 are fixedly arranged inside. The receiving tables 305 are fixed to the inner wall of the grounding pin 311 by welding. An elastic clamp 315 is fixedly connected between the receiving table 305 and the extension section 314. The elastic clamp 315 is a U-shaped metal elastic sheet and has a pre-tightening force. When the extension section 314 is compressed and retracted, the elastic clamp 315 provides a reset elastic force and limits the sliding stroke. When the plug-in box is inserted into the bus duct, the extension section 314 first contacts the grounding conductor and is compressed and retracted by about 5-8 mm. When pulled out, it automatically pops out and returns to the initial state under the action of the elastic clamp 315.

[0041] A push rod 370 is fixedly arranged at the tail of the grounding pin 311. The push rod 370 is a cylindrical rod made of insulating material and moves synchronously with the grounding pin 311 in the axial direction. A first micro switch 380 is arranged on the base 321. A second micro switch 390 is fixedly arranged on the execution end of the push rod 370. The first micro switch 380 and the second micro switch 390 are collinear. Preferably, the second micro switch 390 is fixed by a support structure so as to be arranged collinearly with the first micro switch 380, that is, the contact movement directions of the two are on the same straight line. In particular, L-shaped support arms 367 are rotatably arranged on both sides of the pressing plate 363. A support column 368 is fixedly arranged between the two L-shaped support arms 367. The second micro switch 390 is fixedly arranged on the support column 368 and moves integrally with the pressing plate 363. The first micro switch 380 and the second micro switch 390 are connected in series with the circuit breaker 200 in the control power circuit. Specifically, the first micro switch 380 is a normally open type NO and is normally open. When the push rod 370 moves downward, it is triggered to close. The second micro switch 390 is a normally open type NO and is normally open. When the pressing plate 363 is in the pressing and locking position, the support column 368 moves to the triggering position and closes.

[0042] When the plug-in box is inserted into the bus duct, the extension section 314 first contacts the grounding conductor of the bus duct and is compressed and retracted and moves backward integrally. The push rod 370 moves backward synchronously. When the extension section 314 is completely compressed, the push rod 370 pushes the execution rod of the first micro switch 380, so that the contact is closed. Then, the moving block 322 drives the limiting plate 341 to move backward, triggers the inclined surface self-locking mechanism of the pressing plate 363, and the pressing plate 363 falls and is locked. The pressing plate 363 drives the L-shaped support arms 367, the support column 368 and the second micro switch 390 to move downward to the triggering position, so that the contacts are closed. At this time, the first micro switch 380 and the second micro switch 390 are both closed, the closing circuit is conducted, and the operator can close the power supply.

[0043] When pulling out, the operator presses the pressure rod 360, the pressing plate 363 is lifted to release the locking of the limiting plate 341, at the same time, the pressing plate 363 drives the supporting column 368 to move downward, the second micro switch 390 is out of the trigger position, the contact is disconnected, the closing circuit is immediately cut off, even if the circuit breaker 200 is not tripped, it cannot be closed again, preventing misoperation, the push rod 370 moves backward with the grounding pin 311, the first micro switch 380 is released, the contact is disconnected, and the extension section 314 is finally separated from the grounding conductor, realizing "final disconnection".

[0044] Embodiment three: The anti-reverse flow quick power taking connector box provided in the above embodiments is further optimized, and real-time monitoring of the current direction and communication capability with a remote server are added, so that the user can remotely monitor and manage the device state through the network, referring to Figure 8 It also includes a current direction detection element 400 and a controller 500.

[0045] The current direction detection element 400 is arranged in the box body 100 and is used for accurately detecting the direction of the current. The element can be a Hall effect sensor, a current transformer or other suitable devices for measuring the direction of direct current or alternating current. Its main function is to identify whether the current has reversed flow, i.e. the situation that the current flows from the load to the power supply.

[0046] The controller 500 is signal connected with the current direction detection element 400 and the circuit breaker 200, is responsible for receiving data from the current direction detection element 400, and determines whether to trigger the action of the circuit breaker 200 according to the preset logic. In addition, the controller 500 is signal connected with a remote server, and is connected with the remote server through wired or wireless ways such as Wi-Fi, 4G / 5G, uploads the running state data regularly, including but not limited to the current intensity, the voltage level, the temperature and other key parameters, and at the same time, when detecting potential danger or failure, the controller 500 can send alarm information to the server in time, so that the operation and maintenance personnel can respond quickly.

[0047] Working principle: Insert the plug-in box into the bus duct plug-in interface, the front end of the slidable extension section 314 of the grounding pin 311 first contacts the grounding conductor in the bus duct, realizing "protection grounding priority on". The extension section 314 is kept in the extended state under the action of the built-in U-shaped elastic card 315, with a free length of 5-8 mm, ensuring that the grounding is completed before the phase line and neutral line contact, then the phase line pin 312 and the neutral line pin 313 contact the bus duct conductor, the power taking part 310 is forced to move backward, the moving block 322 drives the guide rod 340 and the limiting plate 341 to slide backward, compressing the first spring 342 to realize energy absorption and buffer, avoiding impact stress on the pin root, when inserted in place, the inclined surface of the limiting plate 341 pushes the inclined surface of the pressing plate 363, so that the pressing plate 363 moves upward along the sliding groove 304; after the insertion is completed, the pressing plate 363 falls back under the action of the torsional spring 366, and the inclined surface of the pressing plate 363 is clamped above the limiting plate 341, forming a mechanical self-locking mechanism to prevent accidental loosening, when the extension section 314 is completely compressed, the push rod 370 pushes the actuator of the first micro switch 380 to make its contact closed, then the moving block 322 drives the limiting plate 341 to move backward, triggering the self-locking mechanism of the inclined surface of the pressing plate 363, and the pressing plate 363 falls to lock, the pressing plate 363 drives the L-shaped support arm 367, the support column 368 and the second micro switch 390 to move downward to the triggering position, making its contact closed, at this time, the first micro switch 380 and the second micro switch 390 are both closed, and the closing circuit is conducted, the operator can close the power supply, after closing, the current is transmitted from the pin assembly 300 to the circuit breaker 200 through the flexible connecting piece 210, and then supplied to the load, the current direction detection element 400 monitors the main circuit current direction in real time, the controller 500 receives the detection signal, judges whether there is reverse current, if reverse current is detected, such as photovoltaic system reverse power supply, grid connection abnormality, etc., the controller 500 immediately issues a trip command to control the circuit breaker 200 to trip and cut off the power supply, preventing equipment damage or safety accidents, the controller 500 is connected with the remote server through Wi-Fi, 4G / 5G and other communication methods, realizing remote state monitoring and operation and maintenance management.

[0048] When pulling out, the operator needs to press the pressing rod 360 first, the pressing plate 363 first drives the limiting plate 341 to move a distance to pull out the power taking part 310, then lifts to release the locking of the limiting plate 341, at the same time, the pressing plate 363 drives the support column 368 to move downward, the second micro switch 390 is out of the triggering position, and the contact is disconnected, the closing circuit is immediately cut off, even if the circuit breaker 200 has not tripped, it also cannot be closed again, preventing misoperation, forming a safe logic of unlocking first, then power off and finally pulling out the power taking part 310.

[0049] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0050] While the embodiments of the application have been shown and described herein, it is to be understood that the scope of the application, jointly pointed out in the appended claims, is not to be limited to the above-described embodiments but can be otherwise variously changed, modified, replaced, and altered within the principles and spirit of the present application.

Claims

1. An anti-backflow quick power take-off junction box with a buffer interface, comprising a box body (100), characterized in that, The box (100) is provided with a circuit breaker (200) and a pin assembly (300), the pin assembly (300) comprises a power taking part (310) and a floating connecting part (320) for fixing the power taking part (310), the power taking part (310) is slidably arranged on one side of the box (100), one end of the power taking part (310) in the box (100) is electrically connected with the circuit breaker (200) through a flexible connecting piece (210), and the other end of the power taking part (310) extending out of the box (100) is used for being connected with a corresponding plug-in interface of the bus duct; The length of the grounding pin (311) in the power taking part (310) is greater than that of the phase line pin (312) and the neutral line pin (313), and the front end of the grounding pin (311) is provided with an axially-slidable extension section (314); The floating connecting part (320) comprises a base (321), a moving block (322) is slidably arranged on the base (321), an insulating pressing piece (330) is arranged on the moving block (322), the insulating pressing piece (330) is fixedly connected with the power taking part (310) through a bolt, a guide rod (340) is fixedly arranged on the side of the moving block (322) away from the bus bar, an accommodating cavity (301) is formed in the base (321), the guide rod (340) extends into the accommodating cavity (301) and is fixedly arranged with a limiting plate (341), a first spring (342) is sleeved on the guide rod (340), and the two ends of the first spring (342) are fixedly connected with the inner top surface of the accommodating cavity (301) and the limiting plate (341) respectively; An installation groove (302) is formed in the base (321), the installation groove (302) is through the accommodating cavity (301), the installation groove (302) has an expansion part (303), a pressing rod (360) is slidably arranged in the installation groove (302), a limiting ring (361) is fixedly arranged on the pressing rod (360), the limiting ring (361) is located in the expansion part (303), a second spring (362) is sleeved on the pressing rod (360), and the two ends of the second spring (362) are fixedly connected with the limiting ring (361) and the inner bottom surface of the expansion part (303) respectively, and sliding grooves (304) are formed in the inner two side surfaces of the accommodating cavity (301), a pressing plate (363) is slidably arranged between the two sliding grooves (304); The pressing plate (363) is fixedly arranged with a connecting seat (364), one end of the pressing rod (360) close to the connecting seat (364) is fixedly arranged with a connecting pin (365), the connecting pin (365) is rotatably connected with the connecting seat (364), a torsional spring (366) is arranged on the connecting pin (365), and the two ends of the torsional spring (366) are fixedly connected with the pressing rod (360) and the side wall of the connecting seat (364) respectively.

2. The reverse flow prevention quick power taking connector box with buffer interface according to claim 1, characterized in that: The inner top surface of the accommodating cavity (301) is fixedly installed with a buffer column (350) in contact with a limiting plate (341), and the buffer column (350) is symmetrically arranged; The buffer column (350) comprises an elastic body (351) and an insulating sheath (352) wrapped on the outer periphery of the elastic body (351).

3. The reverse flow prevention quick power taking connector box with buffer interface according to claim 1, characterized in that: The inside of the grounding pin (311) is fixedly installed with symmetrically arranged receiving tables (305), and the extension section (314) and the receiving tables (305) are fixedly connected with elastic clamps (315).

4. The anti-backflow quick power taking connector box with buffer interface according to claim 3, characterized in that: The tail of the grounding pin (311) is fixedly installed with a push rod (370), the base (321) is provided with a first micro switch (380), the execution end of the push rod (370) is fixedly installed with a second micro switch (390), and the first micro switch (380) and the second micro switch (390) are collinear; The first micro switch (380) and the second micro switch (390) are connected in series in the control power circuit.

5. The reverse flow prevention quick power taking connector box with buffer interface according to claim 4, characterized in that: The two sides of the pressing plate (363) are rotatably installed with L-shaped support arms (367), the L-shaped support arms (367) are fixedly installed with a support column (368) between the two sides, and the second micro switch (390) is fixedly installed on the support column (368).

6. The reverse flow prevention quick power taking connector box with buffer interface according to claim 1, characterized in that: The inside of the box (100) is fixedly installed with a current direction detection element (400), the outer wall of the box (100) is installed with a controller (500), and the controller (500) is signal connected with the current direction detection element (400) and the circuit breaker (200); The controller (500) is signal connected with a remote server.

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