Primary and secondary fusion complete column-mounted circuit breaker integrated spring operating mechanism

Abstract

The utility model relates to a circuit breaker, in particular to a primary and secondary fusion complete column-mounted circuit breaker integrated spring operating mechanism, and solves the problem of circuit breaker structure optimization. Comprising a shell, a motor, a magnetic gear shaft, a main shaft, a switch crank arm, a closing coil, an opening coil, a microswitch, a spring, an auxiliary switch and a wiring terminal strip, the motor is fixedly assembled on the shell, the motor, the magnetic gear shaft, the main shaft and one end of the spring are sequentially assembled in a linkage mode, and the other end of the spring and the shell are fixedly assembled; one end of the main shaft is provided with an energy storage crank arm connected with a spring, an energy storage state is kept through the spring, a lock catch system and a motor, the lock catch releases energy by means of magnetic tripping during breaking, a contact is made to move through a mechanical transmission unit, the structure is simple, reliability is high, and the auxiliary switch and a wiring terminal strip are fixedly connected in an integrated mode. The structure is further simplified, and maintenance is facilitated.

Description

Technical Field

[0001] The utility model relates to a circuit breaker, in particular to an integrated spring operating mechanism of a primary and secondary fused set of column mounted circuit breaker. Background Art

[0002] The primary and secondary integrated complete pole-mounted circuit breaker is a complete switchgear that deeply integrates the primary and secondary technologies of circuit breakers, electromagnetic circuit breakers, electronic vacuum circuit breakers, digital circuit breakers, magnetically controlled circuit breakers, and capacitor power circuit breakers. It is the latest product of the complete pole-mounted switchgear for distribution automation. The primary and secondary integrated complete pole-mounted circuit breakers and load switches use pillar-type vacuum arc extinguishing and tank-type SF6 gas arc extinguishing pole-mounted circuit breakers, with built-in high-precision electronic current transformers, zero-sequence current transformers, phase voltage sensors, and zero-sequence voltage sensors. At the same time, it can meet the universal interchangeable use of equipment from different manufacturers within a certain range and a certain period, and improve the operation and maintenance convenience of pole-mounted circuit breakers. It can be applied to the load current and overload current in the breaking and closing system of the main line and long branch line in the medium-voltage distribution network of the urban (rural) network, and can automatically isolate the fault section. Traditional products are relatively complex in structural design, still occupy a large space, have chaotic line wiring, and are inconvenient for maintenance, and there is still a lot of room for improvement. Utility Model Content

[0003] In view of the deficiencies of the existing technology, the utility model provides an integrated spring operating mechanism for a primary-secondary fusion set of column mounted circuit breakers.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a primary and secondary integrated column mounted circuit breaker integrated spring operating mechanism, including a shell, a motor, a magnetic gear shaft, a main shaft, a switch crank arm, a closing coil, an opening coil, a micro switch, a spring, an auxiliary switch and a terminal block, the motor is fixedly assembled on the shell, the motor, the magnetic gear shaft, the main shaft and one end of the spring are sequentially assembled in linkage, and the other end of the spring is fixedly assembled with the shell, one end of the main shaft is provided with an energy storage crank arm connected to the spring, the rotation of the main shaft drives the spring to stretch and store energy, the closing coil, the opening coil and the micro switch are arranged on the side wall of the same side of the shell, and the main shaft is away from A front cam is provided at the other end of the cam, and the front cam is in contact with the microswitch on the rotation path. A fixedly connected terminal block and an auxiliary switch are provided on the side wall of the shell on the other side away from the microswitch. The switch crank arm is movably assembled on the shell through an axial connection. An engaging portion that engages and rotates with the switch crank arm is provided on the main shaft. A closing release member that engages and limits with the main shaft and an opening release member that engages and interacts with the switch crank arm are also provided in the shell. A striker rod that drives the closing release member to rotate is provided on the closing coil, and a striker rod that drives the opening release member to rotate is also provided on the opening coil. A switch indicating portion that cooperates with the switch crank arm is provided on the auxiliary switch.

[0005] The opening release buckle and the closing release buckle are movably assembled on the housing through a shaft connection, and driving rods are provided at the ends of the shaft of the opening release buckle and the closing release buckle, and the driving rods are in abutting linkage with the striking rod.

[0006] A torsion spring with elastic reset is further provided at the driving rod of the closing release buckle.

[0007] The magnetic gear shaft and the main shaft are in transmission through gear meshing.

[0008] The driving rod is of an L-shaped structure, and the front cam is of a concave-shaped structure.

[0009] The beneficial effects of the present utility model: The integrated spring operating mechanism of the primary-secondary integrated pole-mounted circuit breaker provided by the present utility model is maintained in the energy storage state through a spring and a locking system and with the aid of a motor. When opening, the locking is released by magnetic release to release energy, and the moving contact moves through the mechanical transmission unit. The structure is simple and the reliability is high. The auxiliary switch and the terminal block are integrally fixedly connected, which is beneficial to further simplify the structure and facilitate maintenance. Description of the Drawings

[0010] Figure 1 is a schematic structural diagram of the use of the present utility model;

[0011] Figure 2 is a schematic plan view of the present utility model. Detailed Embodiments

[0012] As Figure 1 - Figure 2 shown, the integrated spring operating mechanism of the primary-secondary integrated pole-mounted circuit breaker includes a housing 1, a motor 2, a magnetic gear shaft 3, a main shaft 4, a switch crank 6, a closing coil 5, an opening coil 7, a micro switch 8 and a spring. Energizing the closing coil 5 and the opening coil 7 and driving the striking rod 12 to perform linear output are mature technical means, which will not be elaborated and limited here. The motor 2 outputs transmission and pulls the spring to stretch. It should be noted that one end of the spring is stretched not through a linear path but through an arc path, so as to realize rotation to drive the spring to stretch. The switch crank 6 is arranged to be linked with the auxiliary switch 11, so as to present the indication of switch closing or opening and trigger the action of relevant mechanisms, which are mature technical means. The design of the micro switch 8 is to be electrically connected to the motor 2, and the micro switch 8 is used to ensure that the action is in place and local interlock automatic control. In this embodiment, the micro switch 8 can be directly connected to the motor 2 or connected to other control circuits, and no more restrictions are imposed here. It should be noted that the designated fixed installation of the auxiliary switch 11, the terminal block 10 and the micro switch 8 is beneficial to the wiring layout and installation connection, simplifies the structure and is convenient to use.

[0013] The motor 2 is fixedly assembled on the housing 1. The motor 2, the magnetic gear shaft 3, the main shaft 4 and one end of the spring are successively assembled in a linkage manner, and the other end of the spring is fixedly assembled with the housing 1. One end of the main shaft 4 is provided with an energy storage crank arm for connecting the spring, and the rotation of the main shaft 4 drives the spring to stretch and store energy. The energy storage crank arm can be provided with a connection point on itself for spring installation, or a special shape can be adopted to facilitate spring connection, both of which can achieve the use effect and will not be restricted too much here.

[0014] The closing coil 5, the opening coil 7 and the microswitch 8 are arranged on the same side wall of the housing 1 to optimize the space layout. The other end of the main shaft 4 away from the cam is provided with a front cam 9, and the front cam 9 abuts against and is linked with the microswitch 8 on the rotation path. The housing 1 is provided with a fixedly connected terminal block 10 and an auxiliary switch 11 on the other side wall away from the microswitch 8. The relative integration and fixed assembly are beneficial to circuit debugging and installation, etc., and can also improve the assembly accuracy and use reliability.

[0015] The switch crank arm 6 is movably assembled on the housing 1 through a shaft connection. The main shaft 4 is provided with an engaging portion that meshes and rotates with the switch crank arm 6. The housing 1 is also provided with a closing release buckle that meshes and limits the main shaft 4 and a tripping release buckle that meshes and is linked with the switch crank arm 6. The closing coil 5 is provided with a striker 12 that drives the closing release buckle to rotate, and the opening coil 7 is also provided with a striker 12 that drives the tripping release buckle to rotate. The auxiliary switch 11 is provided with a switch indicating portion 13 that is linked and cooperated with the switch crank arm 6. The design form of the engaging portion is diverse. In this embodiment, the concave-convex cooperation form is mainly adopted, but it is not limited to this. The closing coil 5, the opening coil 7, the striker 12 and the switch indicating portion 13 are mature technologies and will not be elaborated too much here. When closing, the motor 2 drives the spring to store energy. The closing coil 5 is energized to drive the striker 12 to move, and the striker 12 drives the closing release buckle to disengage from the main shaft 4. The spring releases the stored energy, causing the switch crank arm 6 to rotate, and the switch indicating portion 13 turns to the closing position. When opening, the opening coil 7 is energized to drive the striker 12 to move and the tripping release buckle to act. The switch crank arm 6 is reset to mesh with the main shaft 4 and makes a reverse opening action. After closing or opening, it is not necessary for the closing coil 5 or the opening coil 7 to keep the striker 12 in action. The use is stable and reliable, and only the closing release buckle and the tripping release buckle need to complete the specified actions.

[0016] The opening release buckle and the closing release buckle are movably assembled on the housing 1 through a shaft connection. The opening release buckle and the closing release buckle are provided with a driving rod 14 at the end of the shaft. The driving rod 14 is in abutting linkage with the striking rod 12. A torsion spring 15 with elastic reset is also provided at the driving rod 14 of the closing release buckle. After closing, it quickly resets, which is beneficial to the smooth completion of the action during opening and is also different from the traditional structure. The magnetic gear shaft 3 and the main shaft 4 are driven by gear meshing, which is a common stable driving method, and its advantages will not be elaborated here. The driving rod 14 is in an L-shaped structure, and the front cam 9 is in a concave-shaped structure, which is beneficial to full contact and abutment to achieve the expected effect.

[0017] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. At the same time, the basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art of this industry should understand.

Claims

1. The integrated spring operating mechanism of the primary and secondary integrated pole mounted circuit breaker is characterized by: It includes a housing, a motor, a magnetic gear shaft, a main shaft, a switch arm, a closing coil, an opening coil, a micro switch, a spring, an auxiliary switch and a terminal block. The motor is fixedly mounted on the housing. The motor, the magnetic gear shaft, the main shaft and one end of the spring are sequentially assembled in linkage, and the other end of the spring is fixedly assembled with the housing. One end of the main shaft is provided with an energy storage arm connected to the spring. The rotation of the main shaft drives the spring to stretch and store energy. The closing coil, the opening coil and the micro switch are arranged on the side wall of the same side of the housing. The main shaft is provided with a front cam at the other end away from the energy storage arm. The front cam is in the rotation path. The shell is in abutment with the microswitch, and a fixedly connected terminal block and an auxiliary switch are arranged on the side wall of the shell away from the microswitch. The switch crank arm is movably assembled on the shell through an axis connection, and an engaging portion engaged and rotated with the switch crank arm is provided on the main shaft. A closing release member engaged and limited with the main shaft and an opening release member engaged and linked with the switch crank arm are also provided in the shell. The closing coil is provided with a striker rod for driving the closing release member to rotate, and the opening coil is also provided with a striker rod for driving the opening release member to rotate. The auxiliary switch is provided with a switch indicating portion engaged and coordinated with the switch crank arm.

2. The integrated spring operating mechanism of the primary and secondary fused column mounted circuit breaker according to claim 1, characterized in that: The opening release member and the closing release member are movably assembled on the housing through shaft connection, and the opening release member and the closing release member are provided with driving rods at the ends of the shafts, and the driving rods are abutted and linked with the striker rods.

3. The integrated spring operating mechanism of the primary and secondary fused column mounted circuit breaker according to claim 2, characterized in that: A torsion spring for elastic reset is also provided at the driving rod of the closing release member.

4. The integrated spring operating mechanism of the primary and secondary fused column mounted circuit breaker according to claim 1, characterized in that: The magnetic gear shaft and the main shaft are driven by gear meshing.

5. The integrated spring operating mechanism of the primary and secondary fused column mounted circuit breaker according to claim 2, characterized in that: The driving rod is an L-shaped structure, and the front cam is a concave-shaped structure.

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