Breaker spring operating mechanism double-closing device

Abstract

A circuit breaker spring operating mechanism double-closing device comprises an energy storage unit and a structural frame, and the structural frame is provided with a ratchet wheel which is driven by the energy storage unit to rotate. A rotating shaft of the ratchet wheel is arranged perpendicular to the telescopic direction of the energy storage unit, and a retaining pawl is fixedly arranged on the surface, away from the rotating shaft, of the ratchet wheel. The structural frame is provided with a closing pawl above the holding pawl, and a rotating shaft of the closing pawl is parallel to a rotating shaft of the ratchet wheel and can abut against the holding pawl after the energy storage unit completes energy storage. The structural frame is also provided with a closing switch at one side of the closing pawl, and the closing switch is provided with a trigger rod capable of pushing the closing pawl to be away from the holding pawl. Based on an existing energy storage circuit breaker structure, through a mode of arranging a holding pawl on a ratchet wheel driven by an energy storage unit, contact power connection of a closing pawl and the holding pawl can be completed, and then opening and closing operation can be realized through a mode of arranging a plurality of parallel closing switches to drive the closing pawl.

Description

Technical Field

[0001] This utility model relates to the technical field of energy storage circuit breaker equipment, specifically a double closing device for a circuit breaker spring operating mechanism. Background Technology

[0002] The structure of the energy storage circuit breaker is shown in the circuit breaker spring operating mechanism energy storage opening and closing indicator device and identification method with announcement number CN116959928B. The energy storage state and opening and closing of the circuit breaker are generally demonstrated by the energy storage mechanism and the electromagnetic switch. In order to ensure the opening and closing in the energy storage state, the switching of the circuit breaker opening and closing state in the structure also needs to rely on the above structure for feedback. The energy storage state can be directly fed back to the ratchet to rotate. Then, the ratchet rotation can realize the contact energization of the latch. Finally, the electromagnetic switch is needed to drive the latch to complete the opening and closing. For safety reasons, it is necessary to avoid the situation where the electromagnetic switch cannot drive the latch. Utility Model Content

[0003] To address the problem that energy storage circuit breakers are prone to failure to drive the actuator after a single electromagnetic switch fails, this invention provides a double closing device for a circuit breaker spring operating mechanism.

[0004] The technical solution of this utility model is as follows:

[0005] A double-closing device for a circuit breaker spring operating mechanism includes an energy storage unit and a structural frame, wherein a ratchet driven to rotate by the energy storage unit is provided on the structural frame.

[0006] The rotation axis of the ratchet is set perpendicular to the extension and retraction direction of the energy storage unit, and a retaining chuck is fixedly provided on the surface of the ratchet away from the rotation axis.

[0007] The structural frame has a closing latch above the holding latch, and the rotation axis of the closing latch is parallel to the rotation axis of the ratchet and can abut against the holding latch after the energy storage unit has completed energy storage;

[0008] The structural frame also has a closing switch on one side of the closing lever, and the closing switch is equipped with a trigger rod that can push the closing lever away from the holding lever.

[0009] Unlike existing structures, this design uses a ratchet mechanism to connect the closing latch and the holding latch. After that, the closing and opening of the circuit can be achieved simply by driving the closing latch to move via the closing switch.

[0010] To improve safety, multiple closing latches are spaced apart along the rotation axis, and multiple closing switches are provided corresponding to their positions. This design avoids the problem of equipment failure caused by the failure of a single closing latch.

[0011] To achieve synchronization, the multiple closing actuators are connected by a synchronizing rod to rotate synchronously, and the multiple closing switches operate independently.

[0012] To ensure separation of the two actuators within a short stroke, a roller is provided at the end of the actuator that keeps it away from the ratchet, and only the roller can contact the closing actuator.

[0013] The specific structure of the aforementioned closing switch is as follows: the closing switch includes a closing coil, which can drive the trigger rod to move along the output direction of the energy storage unit.

[0014] To ensure that the trigger rod can respond in real time, the trigger rod is in constant contact with the end of the closing lever away from the holding lever.

[0015] In order to reset the closing lever, an auxiliary spring is provided at a position below the rotation axis, and one end of the auxiliary spring abuts against the structural frame and pushes the closing lever closer to the holding lever.

[0016] To prevent the closing actuator from tilting upwards during movement, the structural frame is equipped with a guide limiter above the trigger rod.

[0017] As a preferred option, the closing lever, located away from the ratchet, retains only the portion that contacts the trigger lever.

[0018] The above-mentioned closing actuator is fixed by means that the closing actuator away from the ratchet is connected to the synchronizing rod by clamping.

[0019] The beneficial effects of this utility model are as follows: This utility model is a double closing device for a circuit breaker spring operating mechanism. Based on the existing energy storage circuit breaker structure, by setting a holding latch with rollers to abut against the closing latch, a smaller contact area can be achieved, and the rotation of the closing latch can be avoided as much as possible. Then, the opening and closing states can be changed by pushing the closing latch through the trigger rod of the closing switch driven by electromagnetic means. Furthermore, by setting multiple closing latches with a single synchronous rod to cooperate with multiple closing switches, it can be ensured that the equipment can continue to operate effectively through other closing switches after the failure of a single closing switch, thus improving safety. Attached Figure Description

[0020] The advantages and solutions 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 this invention.

[0021] In the attached diagram:

[0022] Figure 1This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of part of the structure of this utility model;

[0024] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0025] Figure 4 for Figure 1 Partial structural diagram;

[0026] Figure 5 for Figure 4 Partial structural diagram;

[0027] The components represented by the various reference numerals in the diagram are:

[0028] 1. Energy storage unit; 2. Structural frame; 3. Ratchet; 4. Holding lever; 41. Roller; 5. Closing lever; 6. Closing switch; 61. Trigger rod; 7. Limiting element; 8. Auxiliary spring; 9. Synchronizing rod. Detailed Implementation

[0029] Example

[0030] like Figure 1-5 The circuit breaker spring operating mechanism double closing device shown includes an energy storage unit 1 and a structural frame 2. Its structure will not be described in detail. It should be noted that the structural frame 2 is provided with a ratchet 3 driven to rotate by the energy storage unit 1. When the energy storage unit 1 switches between the energy storage state and the non-energy storage state, the ratchet 3 can rotate under the action of the pawl, thereby having power, and this power is provided by the energy storage unit 1.

[0031] After that, as Figure 5 As shown, the rotation axis of the ratchet 3 is set perpendicular to the extension and retraction direction of the energy storage unit 1, and a retaining pin 4 is fixedly set on the surface of the ratchet 3 away from the rotation axis. Therefore, during the rotation, the retaining pin 4 will rotate with the ratchet 3. In this way, the movement of the retaining pin 4 can be realized by switching the energy storage state of the device.

[0032] Based on the above structure, such as Figure 1 , 4 As shown, the structural frame 2 has a closing latch 5 above the holding latch 4, and the rotation axis of the closing latch 5 is parallel to the rotation axis of the ratchet 3 and can contact the holding latch 4 after the energy storage unit 1 has completed energy storage. After contact, if the holding latch 4 switches from the energy storage state to the non-energy storage state during the rotation of the ratchet 3, the holding latch 4 can disengage from the contact state with the closing latch 5 as the ratchet 3 rotates.

[0033] Finally, and most importantly, the structural frame 2 also has a closing switch 6 on one side of the closing lever 5. The closing switch 6 is an electromagnetic switch, and the closing switch 6 is equipped with a trigger rod 61 that can push the closing lever 5 away from the holding lever 4. The trigger rod 61 can move under the drive of the electromagnetic switch. During the movement, it can push the other end of the closing lever 5 to separate it from the holding lever 4, thereby realizing the switching of the opening and closing states.

[0034] Moreover, the specific structure of the closing switch 6 is as follows: the closing switch 6 includes a closing coil, which can drive the trigger rod 61 to move along the output direction of the energy storage unit 1, thus driving the closing lever 5 to rotate, thereby completing the separation effect.

[0035] It should be noted that in the above structure, in order to ensure that the trigger rod 61 can respond in real time, the trigger rod 61 is in real time contact with the end of the closing latch 5 away from the holding latch 4. In this way, it can be ensured that after the trigger rod 61 is driven by the electromagnetic coil, it can immediately push the closing latch 5 to separate from the holding latch 4.

[0036] Subsequently, after the closing switch 6 switches to a different state, in order to reset the closing latch 5, an auxiliary spring 8 is provided on the trigger rod 61 at a position lower than the rotation axis. One end of the auxiliary spring 8 abuts against the structural frame 2 and pushes the closing latch 5 close to the holding latch 4. Therefore, after the closing latch 5 loses driving force at the end close to the trigger rod 61, the auxiliary spring 8 can reset it so that the opening and closing states can be switched.

[0037] Finally, for security reasons, such as Figure 5 As shown, multiple closing latches 5 are spaced apart along the rotation axis; generally, two are sufficient. Multiple closing switches 6 are also arranged corresponding to their positions. If a single closing switch 6 fails to respond after being energized, other closing switches 6 can be used to switch the circuit, thus preventing equipment failure due to the failure of a single closing latch 5.

[0038] Furthermore, in the above structure, in order to achieve the synchronization effect, the multiple closing latches 5 are connected to rotate synchronously through the synchronizing rod 9, and the multiple closing switches 6 work independently. That is to say, by using any one closing switch 6, the state switching of all closing latches 5 can be achieved through the synchronizing rod 9, thereby achieving separation from the holding latch 4, which is sufficient to cope with the failure of a single closing switch 6.

[0039] Therefore, the above structure achieves the desired effect. Unlike existing structures, it uses a ratchet 3 to establish contact and energize the closing latch 5 and the holding latch 4. Afterward, simply moving the closing latch 5 via the closing switch 6 is sufficient to open and close the circuit. Furthermore, by using multiple closing latches 5 and corresponding multiple closing switches 6, the normal operation of the equipment can be ensured even if a single closing switch 6 fails, resulting in higher safety.

[0040] Example 2

[0041] In addition to the structure shown in Example 1, to ensure separation of the two ferrules within a shorter stroke, such as Figure 5 As shown, a roller 41 is provided at the end of the retainer 4 away from the ratchet 3. Only the roller 41 can contact the closing retainer 5. The roller 41 can prevent the two from being separated and obstructed.

[0042] Furthermore, in the above structure, in order to prevent the closing lever 5 from tilting upwards during the movement, the structural frame 2 is provided with a guiding limiting member 7 above the trigger rod 61. The limiting member 7 is a spring structure, with its upper end fixed in position and its lower end abutting against the upper surface of the trigger rod 61. During the movement of the trigger rod 61, it can be limited by the limiting member, thereby maintaining horizontal movement and driving the closing lever 5 to rotate.

[0043] Finally, since only one closing latch 5 needs to be in contact with the holding latch 4, while others do not, the closing latch 5, which is far from the ratchet 3, only needs to retain the part that contacts the trigger lever 61, which can occupy less space and is convenient to use.

[0044] Furthermore, in the above structure, the closing lever 5 is fixed by means that the closing lever 5, which is away from the ratchet 3, is connected to the synchronizing rod 9 by clamping. In order to achieve synchronous rotation, the synchronizing rod 9 can be a non-circular structure to be connected to the closing lever 5 to ensure synchronous rotation and prevent relative rotation. It is only necessary to ensure that the connection position between the synchronizing rod 9 and the structural frame 2 is a cylinder that can rotate.

Claims

1. A double-closing device for a circuit breaker spring-operated mechanism, comprising an energy storage unit and a structural frame, characterized in that, The structural frame is equipped with a ratchet that is driven to rotate by an energy storage unit; The rotation axis of the ratchet is set perpendicular to the extension and retraction direction of the energy storage unit, and a retaining chuck is fixedly provided on the surface of the ratchet away from the rotation axis. The structural frame has a closing latch above the holding latch, and the rotation axis of the closing latch is parallel to the rotation axis of the ratchet and can abut against the holding latch after the energy storage unit has completed energy storage; The structural frame also has a closing switch on one side of the closing lever, and the closing switch is equipped with a trigger rod that can push the closing lever away from the holding lever.

2. The dual closing device for a circuit breaker spring operating mechanism according to claim 1, characterized in that, Multiple closing actuators are spaced apart along the rotation axis, and multiple closing switches are provided corresponding to their positions.

3. The dual closing device for a circuit breaker spring operating mechanism according to claim 2, characterized in that, The multiple closing actuators are connected by a synchronizing rod to rotate synchronously, and the multiple closing switches operate independently.

4. The dual closing device for a circuit breaker spring operating mechanism according to claim 1, characterized in that, The end of the latch that keeps it away from the ratchet is provided with a roller, and only the roller can contact the closing latch.

5. The dual closing device for a circuit breaker spring operating mechanism according to claim 1, wherein The closing switch includes a closing coil, which can drive the trigger rod to move along the output direction of the energy storage unit.

6. The dual closing device for a circuit breaker spring operating mechanism according to claim 1, wherein The trigger rod and the end of the closing lever away from the holding lever are in constant contact.

7. The dual closing device for a circuit breaker spring operating mechanism according to claim 6, characterized in that, The trigger rod is equipped with an auxiliary spring at a position below the rotation axis, and one end of the auxiliary spring abuts against the structural frame and pushes the closing lever closer to the holding lever.

8. The dual closing device for a circuit breaker spring operating mechanism according to claim 1, wherein The structural frame has a guide limiter above the trigger rod.

9. The dual closing device for a circuit breaker spring operating mechanism according to claim 3, wherein The closing lever, located away from the ratchet, retains only the portion in contact with the trigger lever.

10. The dual closing device for a circuit breaker spring operating mechanism according to claim 9, wherein The closing lever, located away from the ratchet, is connected to the synchronizing rod by clamping.

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