A double-node distribution box circuit breaker capable of preventing the heating and burning of terminal posts

Abstract

The application discloses a double-node meter box circuit breaker capable of preventing a wiring post from being burnt by heat, relates to the technical field of circuit breakers, and comprises a circuit breaker body, a wiring mechanism and a disengaging mechanism. The wiring mechanism is electrically connected between a wire and a wiring post. A grating temperature sensor for detecting the temperature of the wire is arranged on the contact part of the wiring mechanism and the wire. The wiring mechanism comprises a guide circular arc frame and a bracket. The guide circular arc frame and the bracket are uniformly provided with conductive protrusions. The end of the wire is inserted into the gap between the guide circular arc frame and the bracket. The grating temperature sensor is arranged on the surface of the guide circular arc frame and the bracket. When the wire temperature detected by the grating temperature sensor exceeds the maximum set threshold, the disengaging mechanism controls the end of the wire to disengage from the gap between the guide circular arc frame and the bracket, so that the circuit can avoid the continuous heating of the wire and the burning of the wiring post when the circuit is slightly overloaded.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit breakers, and particularly relates to a double-node meter box circuit breaker capable of preventing the heating and burning of a wiring post. BACKGROUND

[0002] When an overload occurs in a circuit, the circuit will heat up, and when the overload is continuous, the circuit will burn out. Since the resistance of the connection part of the circuit is greater than that of other parts of the circuit, and the connection point is prone to loosening, the part that is usually burned out is the wiring post part of the circuit.

[0003] The existing circuit protection usually relies on a circuit breaker to achieve this. However, this is mainly used for the case of instantaneous excessive load or short circuit of the circuit. For the case of continuous slight overload of the circuit or loosening of the wiring part, the circuit continuously heats up but cannot cause the circuit breaker to disconnect the circuit. Long time will cause the wiring post part of the circuit to continuously heat up, and eventually cause the wiring post part to burn out. SUMMARY

[0004] The present application aims to provide a double-node meter box circuit breaker capable of preventing the heating and burning of a wiring post, so as to solve the problems in the background art.

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

[0006] The double-node meter box circuit breaker capable of preventing the heating and burning of a wiring post comprises a circuit breaker body, the circuit breaker body is fixedly clamped in a meter box, upper and lower ends of the circuit breaker body are respectively provided with wiring posts, a wiring mechanism is arranged at the wiring post part of the lower side of the circuit breaker body, the wiring mechanism is connected with a disengagement mechanism, the wiring mechanism electrically connects a wire with the wiring post, and a grating temperature sensor for detecting the temperature of the wire is arranged on the contact part of the wiring mechanism and the wire.

[0007] The wiring mechanism comprises a guide circular arc frame and a bracket, conductive protrusions are uniformly arranged in the guide circular arc frame and the bracket, an end of the wire is inserted into a gap between the guide circular arc frame and the bracket, the guide circular arc frame and the bracket are fitted and extruded, the grating temperature sensor is distributed on the surfaces of the guide circular arc frame and the bracket, and when the wire temperature detected by the grating temperature sensor exceeds a maximum set threshold, the disengagement mechanism controls the end of the wire to disengage from the gap between the guide circular arc frame and the bracket.

[0008] As a further further scheme of the present application: the wiring mechanism comprises wiring barrels distributed at the end of the circuit breaker body, a positioning rack is fixedly arranged on the upper side of the wiring barrel, a penetrating rack is inserted on the wiring barrel, a connecting column is arranged on the penetrating rack, the penetrating rack is inserted and matched between the positioning rack and the wiring barrel, the guiding circular arc rack is inserted between the penetrating rack, the bracket is inserted between the wiring barrel, supporting springs are arranged between the guiding circular arc rack and the penetrating rack and between the bracket and the wiring barrel, and the connecting column between the penetrating racks is fixedly connected with a pressing plate.

[0009] As a further further scheme of the present application: a sealing cover is arranged at the port part of the wiring barrel, the sealing covers between the wiring barrels are provided with connecting plates, the connecting plates are fixedly installed between the sealing covers and the circuit breaker body, and the center part of the sealing cover is provided with an insertion hole matched with the wire.

[0010] As a further further scheme of the present application: a conical surface is arranged at the part of the inner side of the wiring barrel opposite to the end of the wire, and the wire is abutted at the center part of the conical surface through the wiring mechanism.

[0011] As a further further scheme of the present application: the disengaging mechanism comprises an obtuse angle rack, an installation sliding groove is arranged at the edge of the circuit breaker body, a matched sliding groove is arranged on the obtuse angle rack, the matched sliding groove and the installation sliding groove are matched with each other, an inclined connecting sliding groove is arranged on the obtuse angle rack, a clamping assembly is slidingly installed on the connecting sliding groove, a wire is clamped and installed in the clamping assembly, a bottom supporting plate is fixedly arranged between the bottom edges of the obtuse angle rack, an inclined guide rack is arranged on the bottom supporting plate corresponding to the part of the wiring mechanism, a groove matched with the wire is arranged in the inclined guide rack, an extension motor is fixedly installed at the middle part of the bottom supporting plate, and the output end of the extension motor is connected with the clamping assembly.

[0012] As a further further scheme of the present application: the clamping assembly comprises clamping plates one and two, a clamping groove for clamping the wire is arranged between the clamping plates one and two, the wire is clamped in the clamping groove in an S shape after penetrating through the clamping plates one and two, the clamping plates one and two are connected through buckles, and a combination rack is arranged between the buckles.

[0013] As a further scheme of the present application: the connecting cylinder is further connected with an arc extinguishing assembly, the arc extinguishing assembly comprises a gas tank filled with inert gas, a bidirectional gas pump is arranged in the gas tank, the bidirectional gas pump is connected with a gas guide pipe, the gas guide pipe is dispersedly arranged on the top end of the connecting column, the connecting column is hollowly arranged, a through hole is arranged at the joint part between the guide circular arc frame and the penetrating frame, the through hole is opposite to the gap between the guide circular arc frame and the bracket, a sealing ring I is arranged between the penetrating frame and the matching surface of the connecting cylinder, and a sealing ring II is arranged at the joint hole part of the sealing cover.

[0014] As a further scheme of the present application: the joint hole is arranged in a trumpet shape, and a guide semicircular frame is arranged at the end of the joint hole.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] (1) By arranging the connecting cylinder, after the wire passes through the combined connection of the disengaging mechanism, the wire is inserted into the connecting cylinder, the guide circular arc frame is controlled to be pressed down by the lower pressing plate, so that the wire is tightly pressed between the guide circular arc frame and the bracket, and the electrical connection between the wire and the connecting column of the circuit breaker body is completed, wherein the electrical connection between the connecting column of the circuit breaker body and the connecting cylinder is realized, and the electrical connection between the wire and the connecting column is realized by inserting the wire into the connecting cylinder and tightly arranging the wire between the guide circular arc frame and the bracket.

[0017] (2) By arranging the sealing cover and the joint hole, the wire can be conveniently inserted into the connecting cylinder and enter between the guide circular arc frame and the bracket, and the quick installation between the wire and the connecting column is simplified. At the same time, the arrangement of the sealing cover can prevent foreign matters from entering the inside of the connecting cylinder and prevent accidental electric shock or short circuit.

[0018] (3) The wire is clamped and fixed by the clamping plate I and the clamping plate II, the wire passes through the clamping plate II and the clamping plate I in sequence, and then the clamping plate I and the clamping plate II are controlled to be attached, the wire is tightly pressed in the clamping groove, the wire between the clamping plate I and the clamping plate II is clamped in the clamping groove in an S shape, and the clamping plate I and the clamping plate II are combined by buckling. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0020] Figure 2 It is a schematic diagram of the connection structure of the wire and the circuit breaker in the present application.

[0021] Figure 3 It is an installation schematic diagram of the arc extinguishing assembly in the present application.

[0022] Figure 4 It is a schematic diagram of the internal structure of the connecting mechanism in the present application.

[0023] Figure 5 It is the combination structure schematic diagram of the lead and the wiring mechanism in the application.

[0024] Figure 6 It is the front structure schematic diagram of the disengagement mechanism in the application.

[0025] Figure 7 It is the back structure schematic diagram of the disengagement mechanism in the application.

[0026] Figure 8 It is the split structure schematic diagram of the lead and the combination frame in the application.

[0027] In the figure: 1, circuit breaker body; 10, installation sliding groove; 2, positioning frame; 20, lower pressing plate; 3, wiring mechanism; 30, wiring cylinder; 31, insertion frame; 32, sealing ring one; 33, connecting column; 35, sealing cover; 36, connecting plate; 37, insertion hole; 38, guiding semicircle frame; 39, sealing ring two; 310, guiding circular arc frame; 311, bracket; 4, disengagement mechanism; 40, obtuse angle frame; 41, clamping assembly; 410, clamping plate one; 411, clamping plate two; 412, clamping groove; 42, combination frame; 420, buckle; 43, inclined guiding frame; 44, telescopic motor; 45, connecting sliding groove; 46, matching sliding groove; 47, bottom supporting plate; 5, arc extinguishing assembly; 50, gas tank; 51, gas guide pipe; 6, lead. DETAILED DESCRIPTION

[0028] The technical solutions of the application will be further described in detail in combination with specific embodiments.

[0029] As shown in Figure 1 , Figure 2 A double-node meter box circuit breaker preventing wiring column from heating and burning, which comprises a circuit breaker body 1, the circuit breaker body 1 is fixedly clamped in a meter box, the upper and lower ends of the circuit breaker body 1 are respectively provided with wiring columns, the wiring column part on the lower side of the circuit breaker body 1 is provided with a wiring mechanism 3, the wiring mechanism 3 is connected with a disengagement mechanism 4, the wiring mechanism 3 electrically connects the lead 6 and the wiring column, the contact part of the wiring mechanism 3 and the lead 6 is attached with a grating temperature sensor for detecting the temperature of the lead 6.

[0030] As shown in Figure 2 , Figure 5As shown, the wiring mechanism 3 includes a guide circular arc frame 310 and a bracket 311, and the guide circular arc frame 310 and the bracket 311 are uniformly provided with conductive protrusions. The end of the wire 6 is inserted into the gap between the guide circular arc frame 310 and the bracket 311, and the guide circular arc frame 310 and the bracket 311 are fitted and extruded. The grating temperature sensor is distributed on the surface of the guide circular arc frame 310 and the bracket 311. When the temperature detected by the grating temperature sensor exceeds the maximum set threshold, the disengagement mechanism 4 controls the end of the wire 6 to disengage from the gap between the guide circular arc frame 310 and the bracket 311.

[0031] Specifically, after the end of the wire 6 is stripped by the wire stripper, it is inserted into the wiring mechanism 3, and the guide circular arc frame 310 and the bracket 311 clamp the wire 6 to achieve electrical connection between the wire 6 and the wiring post in the circuit breaker body 1. The edge of the wire 6 near the wiring mechanism 3 is provided with a disengagement mechanism 4. When the line is overloaded, the grating temperature sensor provided in the wiring mechanism 3 detects that the temperature of the wire 6 is rising, and the disengagement mechanism 4 drives the wire 6 to disengage from the guide circular arc frame 310 and the bracket 311. The wire 6 is pulled out to disconnect the electrical connection, thereby preventing the wire 6 from continuously heating and burning the parts of the wiring post. The above structure forms a double-node circuit breaker with the circuit breaker body 1. When the circuit is broken or instantaneously overloaded, the circuit breaker body 1 breaks the circuit. When the circuit is slightly overloaded or the wiring post is loose (the resistance increases), the wiring post continuously heats up. In combination with the wiring mechanism 3 and the disengagement mechanism 4, the circuit is disconnected when the temperature of the wire 6 exceeds the maximum set threshold.

[0032] Further, as shown in Figure 2 、 Figure 4 、 Figure 5 The wiring mechanism 3 includes a wiring cylinder 30 distributed at the end of the circuit breaker body 1. The upper side of the wiring cylinder 30 is fixedly provided with a positioning frame 2. The wiring cylinder 30 is inserted with a penetrating frame 31. The penetrating frame 31 is provided with a connecting column 33. The penetrating frame 31 is inserted through the positioning frame 2 and the wiring cylinder 30. The guide circular arc frame 310 and the penetrating frame 31 are inserted. The bracket 311 and the wiring cylinder 30 are inserted. The guide circular arc frame 310 and the penetrating frame 31 and the bracket 311 and the wiring cylinder 30 are provided with supporting springs. The connecting column 33 between the penetrating frame 31 is fixedly connected with a pressing plate 20.

[0033] Specifically, by setting the wire connecting cylinder 30, the wire 6 is inserted into the wire connecting cylinder 30 after passing through the combined connection of the disengaging mechanism 4, and the wire 6 is pressed between the guide circular arc frame 310 and the bracket 311 by controlling the lower pressing plate 20 to press down the guide circular arc frame 310, so as to complete the electrical connection between the wire 6 and the terminal post of the circuit breaker body 1, wherein the terminal post of the circuit breaker body 1 is electrically connected with the wire connecting cylinder 30, and the wire 6 is inserted into the wire connecting cylinder 30 and tightly installed between the guide circular arc frame 310 and the bracket 311, so as to realize the electrical connection between the wire 6 and the terminal post.

[0034] Further, as shown in Figure 2 、 Figure 4 , the port part of the wire connecting cylinder 30 is matched with a sealing cover 35, the sealing cover 35 between the wire connecting cylinders 30 is provided with a connecting plate 36, the connecting plate 36 is fixedly installed between the circuit breaker body 1, and the center part of the sealing cover 35 is provided with a plug-in hole 37 matched with the wire 6.

[0035] Specifically, by setting the sealing cover 35 and the plug-in hole 37, the wire 6 is conveniently inserted into the wire connecting cylinder 30 and enters between the guide circular arc frame 310 and the bracket 311, and the quick installation between the wire 6 and the terminal post is simplified. At the same time, the setting of the sealing cover 35 can avoid foreign matters entering the inside of the wire connecting cylinder 30, and avoid accidental electric shock or short circuit.

[0036] Further, as shown in Figure 2 、 Figure 4 、 Figure 5 , the inside of the wire connecting cylinder 30 is provided with a conical surface opposite to the end part of the wire 6, and the wire 6 abuts at the center part of the conical surface through the wire connecting mechanism 3.

[0037] Specifically, the conical surface is arranged in the inside of the wire connecting cylinder 30, and after the wire 6 is inserted into the wire connecting cylinder 30, the wire 6 is inserted into the wire connecting cylinder 30 at a right angle in combination with the conical surface, so as to facilitate the mutual cooperation of the guide circular arc frame 310 and the bracket 311, and complete the clamping of the wire 6 to realize the electrical connection.

[0038] Further, as shown in Figure 2 、 Figure 6 、 Figure 7As shown, the disengaging mechanism 4 includes an obtuse angle frame 40, the edge of the circuit breaker body 1 is provided with a mounting sliding groove 10, the obtuse angle frame 40 is provided with a matching sliding groove 46, the matching sliding groove 46 and the mounting sliding groove 10 are matched with each other, the obtuse angle frame 40 is provided with an inclined connecting sliding groove 45, the connecting sliding groove 45 is slidably installed with a clamping assembly 41, the clamping assembly 41 is clamped and installed with a wire 6, the bottom edges of the obtuse angle frame 40 are fixedly provided with a bottom supporting plate 47, the bottom supporting plate 47 is provided with an inclined guide frame 43 at a position corresponding to the wiring mechanism 3, the inclined guide frame 43 is provided with a groove matched with the wire 6, and the middle part of the bottom supporting plate 47 is fixedly installed with a telescopic motor 44, and the output end of the telescopic motor 44 is connected with the clamping assembly 41.

[0039] Specifically, after the wire 6 is clamped and fixed by the clamping assembly 41, the wire 6 is stripped by wire strippers, and the stripped length of the wire 6 is uniformly adjusted, after the wire 6 is inserted into the wiring barrel 30 and electrically connected, when the line overload causes the temperature to rise and exceeds the temperature setting threshold, the clamping assembly 41 and the wire 6 are driven by the telescopic motor 44 to slide along the connecting sliding groove 45 on the obtuse angle frame 40, at this time, the clamping assembly 41 drives the wire 6 to disengage from the gap between the guide circular arc frame 310 and the bracket 311, and the electrical connection between the wire 6 and the wiring post is disconnected, but the wire 6 will not completely disengage from the wiring barrel 30, the extracted wire 6 is along the inclined guide frame 43 so that the wire 6 is attached to the groove of the inclined guide frame 43, when the overload problem is eliminated, the clamping assembly 41 is controlled to move along the connecting sliding groove 45 by the telescopic motor 44, the wire 6 is controlled to be reinserted into the wiring barrel 30, the wire 6 is controlled to be pressed on the bracket 311 by the downward pressing plate 20, and the electrical connection is completed.

[0040] Further, as shown in Figure 7 、 Figure 8 The clamping assembly 41 includes a clamping plate one 410 and a clamping plate two 411, a clamping groove 412 for clamping the wire 6 is arranged between the clamping plate one 410 and the clamping plate two 411, the wire 6 is clamped in the S-shaped clamping groove 412 after passing through the clamping plate one 410 and the clamping plate two 411, the clamping plate one 410 and the clamping plate two 411 are connected by buckles 420, and the buckles 420 are provided with a combination frame 42.

[0041] Specifically, since the wire 6 is electrically connected by being pressed by the guide circular-arc frame 310 and the bracket 311, the wire 6 is easy to be separated under external force. The wire 6 is clamped and fixed by the clamping plate one 410 and the clamping plate two 411. The wire 6 passes through the clamping plate two 411 and the clamping plate one 410 in sequence, and then the clamping plate one 410 and the clamping plate two 411 are controlled to be attached, so as to press the wire 6 in the clamping groove 412. The wire 6 between the clamping plate one 410 and the clamping plate two 411 is clamped in the clamping groove 412 in an S shape. The clamping plate one 410 and the clamping plate two 411 are combined by the buckle 420.

[0042] Further, as shown in Figures 2-5 The wiring barrel 30 is further connected with an arc-extinguishing assembly 5. The arc-extinguishing assembly 5 includes a gas tank 50 filled with inert gas. A bidirectional gas pump is arranged in the gas tank 50. The bidirectional gas pump is connected with a gas guide pipe 51. The gas guide pipe 51 is dispersedly arranged at the top end of the connecting column 33. The connecting column 33 is hollow. A through hole is arranged at the insertion position between the guide circular-arc frame 310 and the insertion frame 31. The through hole is opposite to the gap between the guide circular-arc frame 310 and the bracket 311. A sealing ring one 32 is arranged between the insertion frame 31 and the matching surface of the wiring barrel 30. A sealing ring two 39 is arranged at the insertion hole 37 of the sealing cover 35.

[0043] Specifically, when the wire 6 is separated from or reconnected with the wiring column, electric arc is generated, which is easy to cause the internal components to be burned. When the wire 6 is separated from the wiring column by the separation mechanism 4, the bidirectional gas pump is controlled to pump inert gas into the wiring barrel 30, so as to realize arc-extinguishing treatment when the wire 6 is separated. When the wire 6 is reinstalled, the bidirectional gas pump is combined to draw the inert gas in the wiring barrel 30 back to the gas tank 50, so as to reduce the loss of inert gas.

[0044] Further, as shown in Figure 4 The insertion hole 37 is arranged in a trumpet shape. A guide half-circular frame 38 is arranged at the end of the insertion hole 37.

[0045] Specifically, in order to facilitate the wire 6 to be separated and reinserted into the wiring barrel 30, the wire 6 is arranged in shape by the inclined guide frame 43 when the wire 6 is separated. When the wire 6 needs to be reinserted into the wiring barrel 30, the guide half-circular frame 38 is arranged at the upper side of the insertion hole 37, so as to guide the wire 6 which is pushed upwards at the bending position, and ensure that the wire 6 is reinserted into the wiring barrel 30, thereby realizing quick secondary connection of the wire 6.

[0046] More specifically, the bidirectional gas pump in the arc-extinguishing assembly 5 and the telescopic motor 44 in the separation mechanism 4 are controlled by a separately arranged power supply.

[0047] The working principle of the embodiment of the present application is:

[0048] As Figures 1-8As shown, the end of the wire 6 is inserted into the wiring mechanism 3 after being stripped by the wire stripper, and the guide circular arc frame 310 and the bracket 311 form a clamping on the wire 6 to achieve electrical connection between the wire 6 and the wiring post in the circuit breaker body 1. The edge of the wire 6 close to the wiring mechanism 3 is provided with a disengagement mechanism 4. When the circuit is overloaded, the grating temperature sensor provided in the wiring mechanism 3 detects the continuous rise of the temperature of the wire 6, and the disengagement mechanism 4 drives the wire 6 to disengage from the guide circular arc frame 310 and the bracket 311, and the wire 6 is extracted to disconnect the electrical connection, thereby avoiding the continuous heating of the wire 6 to burn the parts of the wiring post. The above structure forms a double-node circuit breaker with the circuit breaker body 1. When the circuit is broken or instantaneously overloaded, the circuit breaker body 1 breaks the circuit. When the circuit is slightly overloaded and continuously causes the wiring post to heat up, the wiring mechanism 3 and the disengagement mechanism 4 disconnect the circuit when the temperature of the wire 6 exceeds the maximum set threshold. By providing the wiring cylinder 30, the wire 6 is inserted into the wiring cylinder 30 after being connected by the disengagement mechanism 4, and the guide circular arc frame 310 is controlled to be pressed down by the lower pressing plate 20, so that the wire 6 is tightly pressed between the guide circular arc frame 310 and the bracket 311, and the electrical connection between the wire 6 and the wiring post of the circuit breaker body 1 is completed. The wiring post of the circuit breaker body 1 is electrically connected with the wiring cylinder 30, the wire 6 is inserted into the wiring cylinder 30 and tightly installed between the guide circular arc frame 310 and the bracket 311, and the electrical connection between the wire 6 and the wiring post is realized. By providing the sealing cover 35 and the plug hole 37, the wire 6 is conveniently inserted into the wiring cylinder 30 and enters between the guide circular arc frame 310 and the bracket 311, and the quick installation between the wire 6 and the wiring post is simplified. At the same time, the sealing cover 35 can prevent foreign matter from entering the inside of the wiring cylinder 30, and prevent accidental electric shock or short circuit. A conical surface is provided in the inside of the wiring cylinder 30. After the wire 6 is inserted into the wiring cylinder 30, the wire 6 can be inserted into the wiring cylinder 30 at a right angle by the conical surface, which facilitates the cooperation between the guide circular arc frame 310 and the bracket 311 to clamp the wire 6 and realize electrical connection.When the line is overloaded and the temperature rises, exceeding the temperature setting threshold, the clamping assembly 41 and the wire 6 are driven along the connecting sliding groove 45 on the obtuse angle frame 40 by the telescopic motor 44, at which time the clamping assembly 41 drives the wire 6 to separate from the gap between the guide circular arc frame 310 and the bracket 311, and the electrical connection between the wire 6 and the terminal post is disconnected, but the wire 6 will not completely separate from the terminal cylinder 30. The extracted wire 6 is along the inclined guide frame 43 so that the wire 6 is attached to the groove of the inclined guide frame 43. When the overload problem is eliminated, the clamping assembly 41 is controlled to move along the connecting sliding groove 45 by the telescopic motor 44, the wire 6 is reinserted into the terminal cylinder 30, the guide circular arc frame 310 is controlled by the lower pressing plate 20 to press the wire 6 on the bracket 311, and the electrical connection is completed. Since the wire 6 is pressed to achieve electrical connection by the guide circular arc frame 310 and the bracket 311, the wire 6 is easily separated under the action of external force, and the wire 6 is clamped and fixed by the clamping plate one 410 and the clamping plate two 411. The wire 6 passes through the clamping plate two 411 and the clamping plate one 410 in turn, and then the clamping plate one 410 and the clamping plate two 411 are controlled to be attached, the wire 6 is pressed in the clamping groove 412, the wire 6 between the clamping plate one 410 and the clamping plate two 411 is S-shaped and clamped in the clamping groove 412, and the clamping plate one 410 and the clamping plate two 411 are combined by the buckle 420. When the wire 6 is disconnected or reconnected with the terminal post, an electric arc is generated, which is easy to cause internal components to burn out. By setting the gas tank 50 and the bidirectional air pump, when the wire 6 is disconnected from the terminal post by the disconnection mechanism 4, the bidirectional air pump is controlled to pump inert gas into the terminal cylinder 30, and the arc extinguishing treatment is realized when the wire 6 is disconnected. When the wire 6 is reinstalled, the inert gas in the terminal cylinder 30 is pumped back to the gas tank 50 by the bidirectional air pump, so as to reduce the loss of inert gas. In order to facilitate the wire 6 to be disconnected and reinserted into the terminal cylinder 30, the wire 6 is arranged in shape by the inclined guide frame 43 when the wire 6 is disconnected, the wire 6 is reinserted into the terminal cylinder 30 when the wire 6 needs to be recontrolled, the guide semicircular frame 38 is arranged on the upper side of the insertion hole 37, the wire 6 is pushed up and guided at the bending part, the wire 6 is reinserted into the terminal cylinder 30, and the rapid secondary connection of the wire 6 is realized.

[0049] The above merely describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. Any reference signs in the claims shall not be regarded as limiting the claims.

[0050] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A double node meter box circuit breaker capable of preventing the heating and burning of terminal posts, comprising a circuit breaker body (1) fixedly clamped in a meter box, the upper and lower ends of the circuit breaker body (1) being respectively provided with terminal posts, characterized in that, The post part of the lower side of the circuit breaker body (1) is provided with a wiring mechanism (3), the wiring mechanism (3) is connected with a separation mechanism (4), the wiring mechanism (3) is electrically connected between the wire (6) and the post, the contact part of the wiring mechanism (3) and the wire (6) is pasted with a grating temperature sensor for detecting the temperature of the wire (6); The wiring mechanism (3) includes a guide circular arc frame (310) and a bracket (311), the guide circular arc frame (310) and the bracket (311) are uniformly provided with conductive protrusions, the end of the wire (6) is inserted into the gap between the guide circular arc frame (310) and the bracket (311), the guide circular arc frame (310) and the bracket (311) are fitted and extruded, the grating temperature sensor is distributed on the surface of the guide circular arc frame (310) and the bracket (311), when the temperature of the wire (6) detected by the grating temperature sensor exceeds the maximum set threshold, the separation mechanism (4) controls the end of the wire (6) to separate from the gap between the guide circular arc frame (310) and the bracket (311); The wiring mechanism (3) includes a wiring barrel (30) distributed on the end of the circuit breaker body (1), the upper side of the wiring barrel (30) is fixedly provided with a positioning frame (2), the wiring barrel (30) is inserted with a penetrating frame (31), the penetrating frame (31) is provided with a connecting column (33), the penetrating frame (31) is inserted through the positioning frame (2) and the wiring barrel (30), the guide circular arc frame (310) and the penetrating frame (31) are inserted, the bracket (311) and the wiring barrel (30) are inserted, the guide circular arc frame (310) and the penetrating frame (31) and the bracket (311) and the wiring barrel (30) are provided with supporting springs, the connecting column (33) between the penetrating frame (31) is fixedly connected with a pressing plate (20); The separation mechanism (4) includes an obtuse angle frame (40), the edge of the circuit breaker body (1) is provided with a mounting sliding groove (10), the obtuse angle frame (40) is provided with a matching sliding groove (46), the matching sliding groove (46) and the mounting sliding groove (10) are matched with each other, the obtuse angle frame (40) is provided with an inclined connecting sliding groove (45), the connecting sliding groove (45) is slidably provided with a clamping assembly (41), the clamping assembly (41) is clamped and mounted with a wire (6), the bottom edges of the obtuse angle frame (40) are fixedly provided with a bottom supporting plate (47), the part of the bottom supporting plate (47) corresponding to the wiring mechanism (3) is provided with an inclined guide frame (43), the inclined guide frame (43) is provided with a groove matched with the wire (6), the middle part of the bottom supporting plate (47) is fixedly provided with a telescopic motor (44), the output end of the telescopic motor (44) is connected with the clamping assembly (41).

2. The dual node distribution box circuit breaker of claim 1, wherein, The port part of the terminal cylinder (30) is matched with a sealing cover (35), the sealing cover (35) between the terminal cylinders (30) is provided with a connecting plate (36), the connecting plate (36) is fixedly installed between the circuit breaker body (1), and the center part of the sealing cover (35) is provided with a plug hole (37) matched with the wire (6).

3. The dual node distribution box circuit breaker of claim 1, wherein, The inside of the terminal cylinder (30) is provided with a conical surface opposite to the end part of the wire (6), and the wire (6) abuts against the center part of the conical surface through the terminal mechanism (3).

4. The dual node distribution box circuit breaker of claim 1, wherein, The clamping assembly (41) comprises clamping plates one (410) and two (411), clamping grooves (412) for clamping the wire (6) are arranged between the clamping plates one (410) and two (411), the wire (6) is clamped in the clamping grooves (412) in an S shape after passing through the clamping plates one (410) and two (411), the clamping plates one (410) and two (411) are connected through buckles (420), and the buckles (420) are provided with a combination frame (42).

5. The dual node distribution box circuit breaker of claim 2, wherein, The terminal cylinder (30) is further connected with an arc extinguishing assembly (5), the arc extinguishing assembly (5) comprises a gas tank (50) filled with inert gas, a bidirectional gas pump is arranged in the gas tank (50), the bidirectional gas pump is connected with a gas guide pipe (51), the gas guide pipe (51) is dispersedly installed at the top end of the connecting column (33), the connecting column (33) is hollow, a through hole is arranged at the plug-in part between the guide circular arc frame (310) and the insertion frame (31), the through hole is opposite to the gap between the guide circular arc frame (310) and the bracket (311), a sealing ring one (32) is arranged between the insertion frame (31) and the matching surface of the terminal cylinder (30), and a sealing ring two (39) is arranged at the plug hole (37) of the sealing cover (35).

6. The dual node distribution box circuit breaker of claim 2, wherein, The plug hole (37) is arranged in a horn shape, and the end part of the plug hole (37) is matched with a guide semicircular frame (38).

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