Automatic energy release structure for circuit breaker

Abstract

The present invention relates to an automatic energy release structure for a circuit breaker, including a closing energy release structure and a tripping energy release structure. The closing energy release structure is located at one end of the closing electromagnet of the circuit breaker, and the tripping energy release structure is located at one end of the tripping electromagnet of the circuit breaker. The closing energy release structure is connected together through a closing rotating plate and a closing push plate, and the tripping energy release structure is connected together through a tripping rotating plate and a tripping push plate. When the vacuum circuit breaker is placed in the switch cabinet and the chassis truck is shaken forward, if the circuit breaker is in the energy storage state at this time, it will automatically release energy through closing and tripping to improve safety.

Description

Technical Field

[0001] The present invention relates to an automatic energy release structure, and particularly to an automatic energy release structure for a circuit breaker which, when the chassis truck is shaken forward and the circuit breaker is in an energy storage state at this time, will automatically release energy through closing and tripping to improve safety. Background Art

[0002] At present, the requirement for power supply reliability is getting higher and higher. If a circuit breaker refuses to trip, serious accidents such as damaging the stability of the power grid and burning out operating equipment will occur. Summary of the Invention

[0003] Aiming at the above problems, the main purpose of the present invention is to provide an automatic energy release structure for a circuit breaker which, when the chassis truck is shaken forward and the circuit breaker is in an energy storage state at this time, will automatically release energy through closing and tripping to improve safety.

[0004] The present invention solves the above technical problems through the following technical solutions: an automatic energy release structure for a circuit breaker; the automatic energy release structure for the circuit breaker includes: a closing energy release structure and a tripping energy release structure; the closing energy release structure is located at one end of the closing electromagnet of the circuit breaker, and the tripping energy release structure is located at one end of the tripping electromagnet of the circuit breaker.

[0005] In a specific embodiment of the present invention: the closing energy release structure is connected together through a closing rotating plate and a closing push plate, and the tripping energy release structure is connected together through a tripping rotating plate and a tripping push plate.

[0006] In a specific embodiment of the present invention: both the closing rotating plate and the tripping rotating plate include: a triangular plate and a threaded rod and a sliding rod installed on the triangular plate.

[0007] In a specific embodiment of the present invention: chutes are provided on the side plates of the circuit breaker, and the sliding rods on the closing rotating plate and the tripping rotating plate respectively slide in the chutes of the side plates on both sides.

[0008] In a specific embodiment of the present invention: both the closing energy release structure and the tripping energy release structure include: a support frame, a pressure rod, a push rod, a retaining piece, a spring, a positioning plate, a triangular connecting plate, and a round plate.

[0009] The support frame is a "J"-shaped frame, and a square hole through which the push rod passes is provided on the side surface of the "J"-shaped frame; three round holes are opened on the triangular connecting plate, and a first pin shaft, a second pin shaft, and a locking nut are respectively installed.

[0010] A retaining piece square hole is opened in the middle of the retaining piece, the retaining piece is sleeved on the push rod, and the spring is located between the retaining piece and the support frame.

[0011] Three waist holes and a screw hole are provided on the support frame, and the triangular connecting plate passes through the locking nut.

[0012] The first pin shaft passes through the pin hole of the push rod, one of the round holes of the triangular connecting plate, and one of the waist-shaped holes of the support frame to install the push rod, the triangular connecting plate and the support frame together; a connecting piece is arranged on the screw hole of the support frame, the connecting piece is provided with a step, and the triangular connecting plate can rotate on the connecting piece.

[0013] In a specific embodiment of the present invention: the support frame is fixed on the top protection plate of the circuit breaker.

[0014] In a specific embodiment of the present invention: the pressure rod and the push rod are respectively connected to the triangular connecting plate. After passing through the first pin shaft and the second pin shaft, split pins for preventing detachment are installed on the first pin shaft and the second pin shaft.

[0015] In a specific embodiment of the present invention: a retaining piece and a spring are sleeved on the push rod, and split pins for preventing the retaining piece and the spring from slipping off are installed on the push rod.

[0016] In a specific embodiment of the present invention: the end of the push rod is provided with a round plate. After passing through the pin shaft, a split pin for preventing detachment is installed on the pin shaft.

[0017] The positive and progressive effects of the present invention are as follows: the automatic energy release structure for the circuit breaker provided by the present invention has the following advantages: when the vacuum circuit breaker is placed in the switch cabinet and the chassis truck is shaken forward, if the circuit breaker is in the energy storage state at this time, it will automatically release energy through closing and tripping to improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the installation position of the energy release structure provided by the present invention on the circuit breaker.

[0019] Figure 2 It is Figure 1 a partial structural schematic diagram of the side plate of the circuit breaker (the side plate on the side where the closing energy release structure is installed).

[0020] Figure 3 It is Figure 1 a partial structural schematic diagram of the side plate of the circuit breaker (the side plate on the side where the tripping energy release structure is installed).

[0021] Figure 4-1 It is Figure 2 a schematic structural diagram of the transfer plate.

[0022] Figure 4-2 It is Figure 4-1 the front view of

[0023] Figure 5-1 It is Figure 3 a schematic structural diagram of the transfer plate.

[0024] Figure 5-2 It isFigure 5-1 Front view.

[0025] Figure 6 Schematic diagram of the installation position of the rotating plate on the side plate of the circuit breaker.

[0026] Figure 7 is Figure 6 Schematic diagram of the structure with the rotating plate added.

[0027] Figure 8-1 Front schematic diagram of the closing energy release structure.

[0028] Figure 8-2 Back schematic diagram of the closing energy release structure.

[0029] Figure 9-1 Front schematic diagram of the opening energy release structure.

[0030] Figure 9-2 Back schematic diagram of the opening energy release structure.

[0031] Figure 10 Schematic diagram of the structure of the pressure rod.

[0032] Figure 11 Schematic diagram of the structure of the push rod.

[0033] Figure 12 Schematic diagram of the structure of the positioning plate.

[0034] Figure 13 Schematic diagram of the structure of the wafer.

[0035] Figure 14 Schematic diagram of the structure of the retaining piece.

[0036] Figure 15 Schematic diagram of the structure of the triangular connecting plate.

[0037] Figure 16-1 Schematic diagram of the structure of the support frame.

[0038] Figure 16-2 is Figure 16-1 Front view.

[0039] The following are the names corresponding to the reference numerals in the present invention:

[0040] Closing energy release structure 1, opening energy release structure 2, closing rotating plate 3, closing push plate 4, opening push plate 6, side plate 7, threaded rod 8, sliding rod 9;

[0041] Chute 701;

[0042] Support frame 101, pressure rod 102, push rod 103, retaining piece 104, spring 105, positioning plate 106, triangular connecting plate 107, round plate 108, first pin shaft 109, second pin shaft 110, locking nut 111, square hole 112, retaining piece square hole 115, connecting piece 116, step 117. Detailed implementation mode

[0043] The following provides a preferred embodiment of the present invention in conjunction with the accompanying drawings to elaborate in detail on the technical solution of the present invention.

[0044] Figure 1 It is a schematic structural diagram of the installation position of the energy release structure provided by the present invention on the circuit breaker. Figure 2 is Figure 1 Schematic partial structure diagram of the side plate of the circuit breaker (the side plate on the side where the closing energy release structure is installed). Figure 3 is Figure 1 Schematic partial structure diagram of the side plate of the circuit breaker (the side plate on the side where the opening energy release structure is installed). As Figure 1-3 shown, the automatic energy release structure provided by the present invention for the circuit breaker includes: a closing energy release structure 1 and an opening energy release structure 2; the closing energy release structure 1 is located at one end of the closing electromagnet of the circuit breaker, and the opening energy release structure 2 is located at one end of the opening electromagnet of the circuit breaker. The closing energy release structure 1 is connected together through a closing rotating plate 3 and a closing push plate 4, and the opening energy release structure 2 is connected together through an opening rotating plate and an opening push plate 6.

[0045] Figure 4-1 is Figure 2 Schematic structural diagram of the middle rotating plate. Figure 4-2 is Figure 4-1 Front view of Figure 5-1 is Figure 3 Schematic structural diagram of the middle rotating plate. Figure 5-2 is Figure 5-1 Front view of

[0046] Figure 6 Schematic diagram of the installation position of the rotating plate on the side plate of the circuit breaker. Figure 7 is Figure 6 Schematic structural diagram with the rotating plate added on Figure 6-7 shown, a chute 701 is provided on the side plate 7 of the circuit breaker, and the sliding rods 9 on the closing rotating plate 3 and the opening rotating plate slide in the chutes 701 of the side plates 7 on both sides respectively.

[0047] Figure 8-1 Front view of the closing energy release structure, Figure 8-2 Back view of the closing energy release structure, Figure 9-1 Front view of the opening energy release structure,Figure 9-2 It is a schematic rear view of the opening energy release structure. As shown in the above figure: both the closing energy release structure 1 and the opening energy release structure 2 include: a support frame 101, a pressure rod 102, a push rod 103, a retaining piece 104 (see Figure 14 ), a spring 105, a positioning plate 106 (see Figure 12 ), a triangular connecting plate 107, a round plate 108 (see Figure 13 ); the support frame 101 is a "Ji"-shaped frame, and a square hole 112 through which the push rod 103 passes is provided on the side of the "Ji"-shaped frame; three round holes are opened on the triangular connecting plate 107, and a first pin shaft 109, a second pin shaft 110 and a locking nut 111 are respectively installed.

[0048] A retaining piece square hole 115 is opened in the middle of the retaining piece 104, the retaining piece 104 is sleeved on the push rod 103, and the spring 105 is located between the retaining piece 104 and the support frame 101.

[0049] Figure 16-1 It is a schematic structural view of the support frame. Figure 16-2 It is for Figure 16-1 the front view of. As shown in Figure 16-1 and 16-2: Three waist holes and a screw hole are provided on the support frame 101, and the triangular connecting plate 107 passes through the locking nut 111.

[0050] The first pin shaft 109 passes through the push rod hole of the push rod 103, one of the round holes of the triangular connecting plate 107, and one of the waist holes of the support frame 101 to install the push rod 103, the triangular connecting plate 107 (see Figure 15 ) and the support frame 101 together; a connecting piece 116 is provided on the screw hole of the support frame 101, the connecting piece 116 has a step 117, and the triangular connecting plate 107 can rotate on the connecting piece 116.

[0051] The support frame 101 is fixed on the top guard plate of the circuit breaker. The pressure rod 102 (see Figure 10 ) and the push rod 103 (see Figure 11 ) are respectively connected to the triangular connecting plate 107. After passing through the first pin shaft 109 and the second pin shaft 110, anti-detachment split pins are installed on the first pin shaft 109 and the second pin shaft 110.

[0052] A retaining piece and a spring are threaded on the push rod 103, and anti-detachment split pins are installed on the push rod to prevent the retaining piece and the spring from slipping off. A round plate is provided at the end of the push rod. After passing through the pin shaft, anti-detachment split pins are installed on the pin shaft.

[0053] The following are some supplementary explanations of the present invention:

[0054] Energy storage: The energy required for the circuit breaker to close is provided by the closing spring on the mechanism. Energy storage can be completed by an energy storage motor or manually using an energy storage handle.

[0055] Electric energy storage: When the energy storage motor works, the pinion on the motor output shaft connected to the energy storage motor rotates, driving the large gear to rotate. The closing cam on the mechanism main shaft rotates synchronously with the large gear. At this time, the closing spring is stretched for energy storage. When it reaches the energy storage position, the energy storage holding block holds against the roller on the closing cam to maintain the energy storage position.

[0056] Manual energy storage: When performing manual energy storage, rotate the energy storage handle to perform the above energy storage process.

[0057] Closing: When the circuit breaker receives a closing instruction (push the closing button by hand - push the closing push rod to move backward, or start the closing electromagnet for electric closing - when starting the closing electromagnet for electric closing, the iron core inside the closing electromagnet extends backward), the closing push plate is forced to move backward, causing the energy storage holding block to disengage from the roller on the closing cam. The closing cam rotates clockwise under the action of the closing spring, pushing the main shaft to rotate counterclockwise. The main shaft drives the connecting plate to move downward through the toggle arm, driving the entire transmission system such as the lever to rotate counterclockwise. The insulating pull rod installed under the solid-sealed pole column moves upward in a straight line, driving the moving contact to close with the static contact at an appropriate speed and compressing the internal contact spring. The holding component on the main shaft will hold against the holding plate, and the holding plate rotates clockwise and leans on the trip shaft to keep the closing state, thus completing the closing process.

[0058] Tripping: When the switch receives a tripping instruction (push the tripping button by hand - push the tripping push rod to move backward, or start the tripping electromagnet for electric tripping - when starting the tripping electromagnet for electric tripping, the iron core inside the tripping electromagnet extends backward), both the tripping push plate and the auxiliary tripping push plate are forced to move backward, causing the trip shaft to rotate clockwise, and the holding plate slides out from the notch of the trip shaft. At this time, under the action of the tripping spring and the contact spring, the force generated on the holding component on the main shaft will force the holding plate to rotate, so that the holding plate disengages from the holding component on the main shaft. The entire transmission system such as the main shaft and the lever moves clockwise. The insulating pull rod drives the moving contact to separate from the static contact at an appropriate speed. Near the final position of tripping, the oil buffer starts to act to absorb the remaining tripping kinetic energy, thus completing the entire tripping process.

[0059] Note: Both the closing push plate and the tripping push plate are equipped with torsion springs, which are connected to the mechanism side plate to ensure that the closing push plate and the tripping push plate can be reset in time.

[0060] The following gives a specific implementation example with reference to the attached drawings. The top guard plate of the circuit breaker is provided with studs, and the top of the frame is provided with two through holes to allow the pressure rod to pass through. Both side plates of the mechanism are provided with chutes and threaded holes.

[0061] The energy release structure includes: a closing energy release structure 1 and a tripping energy release structure 2. The closing energy release structure 1 is at the closing end, and the tripping energy release structure 2 is at the tripping end of the circuit breaker.

[0062] The support frame is provided with a connecting piece, and the rear part of the step of the connecting piece has a thread; the triangular connecting plate 107 is installed on the connecting piece of the support frame and is locked against detachment by a lock nut. Since the connecting piece has a step, the triangular connecting plate 107 can rotate on the connecting piece. The pressure rod and the push rod are respectively connected to the triangular connecting plate 107. After passing through the pin shaft, a split pin is installed on the pin shaft to prevent detachment.

[0063] A retaining piece and a spring are threaded through the push rod, and a split pin is installed on the push rod to prevent the retaining piece and the spring from slipping off; the push rod passes through the positioning plate; the end of the push rod has a round plate. After passing through the pin shaft, a split pin is installed on the pin shaft to prevent detachment.

[0064] Both the support frame and the positioning plate are installed on the top guard plate of the circuit breaker (the top guard plate is provided with stud bolts).

[0065] The closing rotating plate 3 is installed on the closing side of the mechanism, and the opening rotating plate is installed on the opening side of the mechanism and is connected to the side plate of the mechanism through a positioning pin. The positioning pin is screwed into the threaded hole of the side plate of the mechanism. The long rods of the closing rotating plate 3 and the opening rotating plate pass through the sliding grooves of the side plate of the mechanism. The long rods are respectively in front of the closing push plate and the opening push plate.

[0066] The pressure rods of the closing energy release structure 1 are respectively connected to the closing rotating plate 3, and the pressure rods of the opening energy release structure 2 are respectively connected to the opening rotating plate, and lock nuts are used to prevent detachment. Arc-shaped nylon blocks are installed on both side plates of the circuit breaker chamber of the switch cabinet. When the circuit breaker is pushed into the switch cabinet; the wheels of the chassis enter the guide rail of the switch cabinet, and the lock piece of the chassis is embedded in the lock catch on the guide rail.

[0067] When the rocker of the chassis is shaken, the chassis will drive the circuit breaker forward. At this time, the push rods of the closing energy release structure 1 and the opening energy release structure 2 will be squeezed by the arc-shaped nylon blocks on both side plates of the switch cabinet. Then the push rods will move inward, driving the pressure rods to move downward, and the connecting plate will be stressed and rotate. If the circuit breaker is in the energy storage state, the long rod of the closing rotating plate 3 will push the closing push plate backward to close the circuit breaker, and the long rod of the opening rotating plate will push the opening push plate backward to open the circuit breaker, so as to achieve the energy release effect.

[0068] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic energy release structure for a circuit breaker; characterized in that: The automatic energy release structure for the circuit breaker includes: a closing energy release structure and a tripping energy release structure; the closing energy release structure is located at one end of the closing electromagnet of the circuit breaker, and the tripping energy release structure is located at one end of the tripping electromagnet of the circuit breaker; The closing energy release structure is connected together through a closing rotating plate and a closing push plate, and the tripping energy release structure is connected together through a tripping rotating plate and a tripping push plate; Both the closing energy release structure and the tripping energy release structure include: a support frame, a pressure rod, a push rod, a retaining piece, a spring, a positioning plate, a triangular connecting plate, and a round plate; The support frame is a "C"-shaped frame, and a square hole through which the push rod passes is provided on the side surface of the "C"-shaped frame; three round holes are opened on the triangular connecting plate, and a first pin shaft, a second pin shaft, and a locking nut are respectively installed; A retaining piece square hole is opened in the middle of the retaining piece, the retaining piece is sleeved on the push rod, and the spring is located between the retaining piece and the support frame; Three waist-shaped holes and a screw hole are provided on the support frame, and the triangular connecting plate passes through the locking nut; The first pin shaft passes through the push rod hole of the push rod, one of the round holes of the triangular connecting plate, and one of the waist-shaped holes of the support frame to install the push rod, the triangular connecting plate, and the support frame together; a connecting piece is provided on the screw hole of the support frame, the connecting piece has a step, and the triangular connecting plate can rotate on the connecting piece; Arc-shaped nylon blocks are installed on both side plates of the circuit breaker chamber of the switch cabinet; when the circuit breaker is pushed into the switch cabinet, the chassis wheels enter the switch cabinet guide rail, and the chassis car lock piece is embedded in the lock on the guide rail.

2. The automatic energy release structure for a circuit breaker according to claim 1, characterized in that, Both the closing rotating plate and the tripping rotating plate include: a triangular plate and a threaded rod and a sliding rod installed on the triangular plate.

3. The automatic energy release structure for a circuit breaker according to claim 2, characterized in that, Chute grooves are provided on the side plates of the circuit breaker, and the sliding rods on the closing rotating plate and the tripping rotating plate respectively slide in the chute grooves of the two side plates.

4. The automatic energy release structure for a circuit breaker according to claim 1, characterized in that, The support frame is fixed on the top protection plate of the circuit breaker.

5. The automatic energy release structure for a circuit breaker according to claim 1, characterized in that, The pressure rod and the push rod are respectively connected to the triangular connecting plate. After passing through the first pin shaft and the second pin shaft, a split pin for preventing detachment is installed on the first pin shaft and the second pin shaft.

6. The automatic energy release structure for a circuit breaker according to claim 1, characterized in that, The push rod is provided with a retaining piece and a spring, and a split pin for preventing the retaining piece and the spring from slipping off is installed on the push rod.

7. The automatic energy release structure for a circuit breaker according to claim 1, characterized in that, The end of the push rod is provided with a round plate. After passing through the pin shaft, a split pin for preventing detachment is installed on the pin shaft.

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