Isolation locking device of circuit breaker mechanism

Abstract

An isolation locking device of a circuit breaker mechanism comprises a spring energy storage mechanism, the spring energy storage mechanism is connected with a ratchet wheel, the ratchet wheel is provided with a movable pawl, the spring energy storage mechanism is connected with a frame, and the frame is provided with a feedback pawl abutting against the movable pawl. The end, away from the movable pawl, of the feedback pawl abuts against a trigger piece, and the trigger piece can be triggered by the switch and drive the feedback pawl to be away from the movable pawl. The stroke of the feedback pawl is limited by a fixed limiting rod; the frame is further provided with a telescopic limiting rod, the telescopic limiting rod can move to the rotating path of the feedback pawl and can limit the feedback pawl, on the basis of an existing structure, the telescopic limiting rod capable of moving to the rotating path of the feedback pawl is additionally arranged, and under special conditions, the telescopic limiting rod can move to the rotating path of the feedback pawl. And the feedback pawl can be controlled to be limited, so that the state change of the feedback pawl is avoided, and the feedback pawl can be effectively protected or dealt with unforeseen circumstances.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker mechanism technology, specifically to an isolation and interlocking device for a circuit breaker mechanism. Background Technology

[0002] The spring energy storage mechanism can drive the movable latch to rotate. Then, by switching the feedback latch, the contact or separation between the movable latch and the feedback latch can be achieved, thereby realizing the opening and closing of the circuit. The aforementioned switch is generally an electromagnetic switch, and the opening and closing state is changed by switching through electromagnetic drive. It can be seen that under normal circumstances, the contact and energization between the feedback latch and the movable latch is generally changed by the electromagnetic switch. However, since the application scenarios of the above structure are not ideal, under the conditions of gravity, wind pressure, vibration, installation, or accidental contact with the operating mechanism, the opening and closing state can easily change due to non-switch drive. In this state, the equipment is dangerous. Summary of the Invention

[0003] To address the problem of the lack of a temporary limiting mechanism in response to unexpected situations in the aforementioned isolating circuit breakers, this invention provides an isolating interlocking device for the circuit breaker mechanism.

[0004] The technical solution of this invention is as follows: An isolation and interlocking device for a circuit breaker mechanism includes a spring energy storage mechanism. The output end of the spring energy storage mechanism is connected to a ratchet. The ratchet is provided with a movable latch at a position away from the rotation axis. The spring energy storage mechanism is also connected to a frame. The frame is rotatably provided with a feedback latch that abuts against the movable latch. The end of the feedback latch away from the rotation axis can rotate in a direction away from the movable latch. The end of the feedback actuator away from the active actuator is in contact with a trigger, and the trigger can be activated by a switch on the frame to drive the feedback actuator away from the active actuator. The feedback actuator is provided with fixed limit rods on both sides of the rotation direction, and the fixed limit rods can limit the stroke of the feedback actuator. The frame is also provided with a telescopic limiting rod driven by a drive motor and moving in a straight line. The telescopic limiting rod can move onto the rotation path of the feedback actuator and can limit the feedback actuator. The feedback switch can be located on both sides of the linear movement path of the telescopic limit rod when the abutment drive switch is in either open or closed state.

[0005] Based on the original structure, a movable telescopic limit rod structure is added. The telescopic limit rod is controllable and can be moved to the rotation path of the feedback latch. Therefore, under special circumstances and needs, it can be controlled to limit the feedback latch to prevent changes in its state. It is very effective for both protection and dealing with unexpected situations. Furthermore, the normal use of the feedback latch is not affected when the telescopic limit rod is reset.

[0006] As a preferred embodiment, multiple switches are provided, and the multiple switches are synchronously connected through a synchronizing rod.

[0007] To achieve reset, the trigger is connected to a spring reset mechanism, and the spring reset mechanism can push the feedback pin to reset via the trigger.

[0008] To facilitate control over the contact state between the telescopic limit rod and the feedback actuator, the telescopic limit rod is equipped with side trigger switches on both sides that are in contact with the feedback actuator, and the side trigger switches can only extend out of the surface of the telescopic limit rod when not triggered.

[0009] To ensure the position and location confirmation of the telescopic limit rod, the bracket is provided with planes through which the telescopic limit rod passes on both sides of the feedback pin. The opening through which the telescopic limit rod passes on the bracket has the same diameter as the telescopic limit rod, and the distance between the two planes is the same as the travel length of the telescopic limit rod.

[0010] The side-triggered switch is opened and closed in such a way that it can only be triggered by a feedback latch or a plane on the bracket through which a telescopic limiting rod passes.

[0011] To facilitate understanding of the status of the aforementioned telescopic limit rod, the output shaft of the drive motor is also connected to a synchronously rotating indicator. The bracket on which the drive motor is mounted is also equipped with an indicator, and the information on the two indicators is different, and the two indicators can overlap.

[0012] As a preferred embodiment, the output shaft of the drive motor is also connected to an encoder.

[0013] The specific driving structure of the aforementioned telescopic drive rod is as follows: the drive motor is connected to and drives the telescopic limit rod to move in a straight line through a drive linkage, and the moving direction of the telescopic limit rod is set perpendicular to the rotation plane of the feedback actuator.

[0014] Preferably, the telescopic limiting rod can only move in a straight line and cannot rotate around the central axis.

[0015] The beneficial effects of this invention are as follows: This invention is an isolation and interlocking device for a circuit breaker mechanism. Based on the original structure, a telescopic limiting rod structure for limiting is added. It can only move along its axial direction, and its movement path intersects with the feedback latch. Therefore, under special circumstances, the feedback latch can be locked in a state that prevents it from changing its state, thereby playing a protective role. When retracted, it does not affect the normal operation of the equipment. Furthermore, during the movement of the telescopic limiting rod, its own position and the current position of the feedback latch can be controlled by the setting of the side trigger switch. This allows for timely detection and convenient handling when the feedback latch is not synchronized with the switch. Moreover, the side trigger switch can be triggered by the plane when moving within the opening, and its own position can be easily controlled. Attached Figure Description

[0016] The solutions and advantages of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention.

[0017] In the attached diagram: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Enlarged view of a portion; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is a partial structural diagram of the present invention (and...). Figure 3 (Different perspectives) Figure 5 This is a front view schematic diagram of part of the structure of the present invention; Figure 6 This is a schematic diagram of the telescopic limiting rod structure of the present invention; The components represented by the various reference numerals in the diagram are: 1. Spring energy storage mechanism; 2. Ratchet; 3. Movable latch; 4. Feedback latch; 5. Trigger; 6. Switch; 7. Fixed limit rod; 8. Telescopic limit rod; 81. Side trigger switch; 9. Drive linkage; 10. Indicator; 11. Synchronizing rod; 12. Encoder. Detailed Implementation

[0018] Example like Figure 1The circuit breaker mechanism isolation and interlocking device shown includes a spring energy storage mechanism 1. The output end of the spring energy storage mechanism 1 is connected to a ratchet 2, the structure of which will not be described in detail. It should be noted that the ratchet 2 is provided with a movable latch 3 at a position away from the rotation axis. The movable latch 3 can rotate synchronously with the ratchet 2 and thus change its position. In addition, in order to facilitate the installation of other structural components, the spring energy storage mechanism 1 is also connected to a frame. The position of the frame and the spring energy storage mechanism 1 is constant. The frame is rotatably provided with a feedback latch 4 that abuts against the movable latch 3. After the feedback latch 4 abuts against the movable latch 3, energization is achieved. The end of the feedback latch 4 away from the rotation axis can rotate in a direction away from the movable latch 3. Therefore, controlling the rotation of the feedback latch 4 can realize the opening and closing operation.

[0019] The specific method used to drive the feedback actuator 4 to rotate is as follows: Figure 2-5 As shown, the end of the feedback actuator 4 away from the movable actuator 3 abuts against a trigger 5. The trigger 5 is movable, and after moving, it can drive the feedback actuator 4 to rotate synchronously to change its state. The trigger 5 is triggered by a switch 6 set on the frame, which drives the feedback actuator 4 away from the movable actuator 3. The switch 6 can be an electromagnetic switch, which drives the trigger 5 after being energized, and further drives the feedback actuator 4 until it has a relative displacement with the movable actuator 3.

[0020] In order to achieve reset, the trigger 5 is connected to a spring reset mechanism, and the spring reset mechanism can push the feedback latch 4 to reset through the trigger 5 and achieve relative displacement with respect to the movable latch 3. By alternating the operation of the switch 6 and the spring reset mechanism, the two states required for opening and closing the circuit can be achieved.

[0021] Subsequently, in order to limit the stroke of the feedback actuator 4, fixed limiting rods 7 are provided on both sides of the rotation direction of the feedback actuator 4. The fixed limiting rods 7 are in a constant position and are used to limit the feedback actuator 4 to stop after reaching a preset rotation angle, thereby limiting the stroke of the feedback actuator 4.

[0022] With the above structure alone, in the event of an unexpected situation, there is a small probability that the feedback actuator 4 may deviate from its preset state, that is, it may unexpectedly move from the closed position to the open position, or vice versa. In this case, the state of the equipment becomes uncontrollable, which is quite dangerous. To address the above situation, this device also focuses on providing the following components, such as... Figure 1As shown, the frame is also provided with a telescopic limiting rod 8 driven by a drive motor and moving in a straight line. The telescopic limiting rod 8 can move along its central axis and change its position. It should be noted that the telescopic limiting rod 8 can move onto the rotation path of the feedback latch 4 and can limit the feedback latch 4. That is to say, through the control of the motor, the telescopic limiting rod 8 can be moved to a position that blocks the feedback latch 4. After that, in the accidental situations mentioned above, the feedback latch 4 will not change its state, thus meeting the protection requirements and maintaining the state through a mechanical structure.

[0023] Furthermore, in order to limit the state in both states, the feedback switch 6 is located on both sides of the linear movement path of the telescopic limit rod 8 when the abutment drive switch 6 is in the open or closed state. In other words, the telescopic limit rod 8 can prevent the feedback switch 6 from rotating in two directions on different sides, so the switching between the open and closed states can be limited and protected.

[0024] The above structure achieves this by adding a movable telescopic limit rod 8 to the original structure. The telescopic limit rod 8 is controllable and can move onto the rotation path of the feedback latch 4 to block the state switching of the feedback latch 4. Therefore, under special circumstances and requirements, it can control the feedback latch 4 to limit its state and prevent it from changing. The limiting method is mechanical, and if its strength meets the requirements, the feedback latch 4 will not be able to switch states. This locking method is very effective for both protection and dealing with unexpected situations. Furthermore, the normal use of the feedback latch 4 is not affected when the telescopic limit rod 8 is reset. In other words, as an additional structure, it can selectively limit protection without affecting the use of the original equipment, and the state is controllable.

[0025] Subsequently, as a preferred embodiment, although controlling the telescopic limit rod 8 to change position can limit the position of the feedback latch 4, it is impossible to detect if it has already misaligned. Therefore, in order to facilitate the control of the contact state between the telescopic limit rod 8 and the feedback latch 4, such as... Figure 6 As shown, the telescopic limit rod 8 is provided with side trigger switches 81 on both sides that contact the feedback latch 4. The side trigger switches 81 can only extend out of the surface of the telescopic limit rod 8 when not triggered. Therefore, during the movement of the telescopic limit rod 8, its side trigger switches 81 will inevitably come into contact with the feedback latch 4. Then, when it comes into contact with the side trigger switches 81 on either side, its specific position on the telescopic limit rod 8 can be controlled. Thus, the above structure can add the function of confirming the position status of the feedback latch 4 on the basis of the original limit, without affecting the original application method.

[0026] Based on the above structure, further, in order to ensure the position and position confirmation of the telescopic limit rod 8, the bracket is provided with planes through which the telescopic limit rod 8 passes on both sides of the feedback latch 4. This serves two purposes: firstly, it limits the movement of the telescopic limit rod 8; secondly, it can cooperate to trigger the side trigger switch 81. Specifically, the opening through which the telescopic limit rod 8 passes on the bracket has the same diameter as the telescopic limit rod 8. Therefore, when the telescopic limit rod 8 passes through the opening, it can be restricted by the opening and simultaneously trigger the side trigger switch 81. It should be noted that the side trigger switch 81 is symmetrical about the telescopic limit rod 8 to ensure the effect of simultaneous triggering. Furthermore, the distance between the two planes is the same as the travel length of the telescopic limit rod 8. In other words, under normal circumstances, the telescopic limit rod 8 does not need to move out of the restricted area of ​​the plane.

[0027] The above structure can achieve the goal that the side trigger switch 81 can be triggered to open and close in only two situations: the side trigger switch 81 can only be triggered by the feedback latch 4 or the plane on the bracket through which the telescopic limit rod 8 passes.

[0028] Subsequently, since the telescopic limit rod 8 is associated with the opening and closing of the aforementioned feedback latch 4, in order to facilitate understanding of the state of the telescopic limit rod 8, the output shaft of the drive motor is also connected to a synchronously rotating indicator 10. The bracket on which the drive motor is mounted is also equipped with an indicator 10, and the information on the two indicator 10s is different. Moreover, the two indicator 10s can overlap. When they overlap, the information of one indicator 10 is displayed, and when the state of the telescopic limit rod 8 changes, the information of the other indicator 10 is displayed after the indicator 10 rotates synchronously, thus realizing the display of two different information.

[0029] And as Figure 1 As shown, the specific driving structure of the telescopic drive rod is as follows: the drive motor is connected to and drives the telescopic limit rod 8 to move in a straight line via the drive linkage 9. The moving direction of the telescopic limit rod 8 is perpendicular to the rotation plane of the feedback latch 4. To obtain its rotation angle, the output shaft of the drive motor is also connected to an encoder 12. Based on the information from the encoder 12, the state of the motor and the current position of the telescopic limit rod 8 can be controlled. Furthermore, the telescopic limit rod 8 can only move in a straight line and cannot rotate around the central axis to avoid the situation where the side trigger switch 81 cannot be triggered by the feedback latch 4 due to rotation.

[0030] Finally, multiple switches 6 are provided, and the multiple switches 6 are synchronously connected through a synchronizing rod 11. An interference fit is adopted, so that when any one switch can operate, it can drive the feedback actuator 4.

Claims

1. An isolating lockout device for a circuit breaker mechanism comprising a spring energy storage mechanism, an output of the spring energy storage mechanism being connected to a ratchet, characterized in that, The ratchet is provided with a movable catch at a position away from the rotation axis, the spring energy storage mechanism is further connected with a frame, the frame is rotationally provided with a feedback catch in contact with the movable catch, and an end of the feedback catch away from the rotation axis can rotate away from the movable catch; An end of the feedback catch away from the movable catch is in contact with a trigger, and the trigger can be triggered by a switch provided on the frame to drive the feedback catch away from the movable catch; The feedback catch is provided with fixed limiting rods on both sides in the rotation direction, and the fixed limiting rods can limit the stroke of the feedback catch; The frame is further provided with a telescopic limiting rod driven by a driving motor and moving in a straight line direction, the telescopic limiting rod can move to the rotation path of the feedback catch and limit the feedback catch; The feedback switch can be located on both sides of the straight line movement path of the telescopic limiting rod in the open and closed states of the contact driving switch.

2. An isolating lockout device for a circuit breaker mechanism according to claim 1, wherein, The switch is provided with a plurality of switches which are synchronously connected through a synchronous rod.

3. The isolation latch apparatus for a circuit breaker mechanism according to claim 1, wherein, The trigger is connected with a spring reset mechanism, and the spring reset mechanism can reset the feedback catch through the trigger.

4. The isolation latch apparatus for a circuit breaker mechanism according to claim 1, wherein, The telescopic limiting rod is provided with side trigger switches on both sides in contact with the feedback catch, and the side trigger switches can only extend out of the surface of the telescopic limiting rod in the untriggered state.

5. An isolating latch for a circuit breaker mechanism according to claim 4 wherein, The support is provided with planes penetrated by the telescopic limiting rod on both sides of the feedback catch, and the opening penetrated by the telescopic limiting rod on the support is the same in diameter as the telescopic limiting rod, and the distance between the two planes is the same as the stroke length of the telescopic limiting rod.

6. An isolating latch for a circuit breaker mechanism according to claim 5 wherein, The side trigger switch can only be triggered by the feedback catch or the plane penetrated by the telescopic limiting rod on the support.

7. The isolation latch apparatus for a circuit breaker mechanism according to claim 1, wherein, The output shaft of the driving motor is further connected with an indicator rotating synchronously, and the support mounting the driving motor is also provided with an indicator, the information of the two indicators is different, and the two indicators can coincide.

8. The isolation latch apparatus for a circuit breaker mechanism according to claim 1, wherein, The output shaft of the driving motor is further connected with an encoder.

9. The isolation latch apparatus for a circuit breaker mechanism according to claim 1, wherein, The driving motor is connected and driven by a driving connecting rod to move the telescopic limiting rod in a straight line direction, and the movement direction of the telescopic limiting rod is perpendicular to the rotation plane of the feedback catch.

10. The isolation latch apparatus for a circuit breaker mechanism according to claim 1, wherein, The telescopic limiting rod can only move in a straight line direction and cannot rotate around the central axis.

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