阅读说明：本技术 一种合闸锁闩及使用该合闸锁闩的弹簧操动机构 (Closing plunger latch and spring operating mechanism using same ) 是由 宋广民 刘宇 郭良超 韩钰 杨秋蓉 惠勇锋 李美荣 李新刚 易征楠 刘煜 黄晓洋 于 2019-07-25 设计创作，主要内容包括：本发明提供了一种合闸锁闩及使用该合闸锁闩的弹簧操动机构,合闸锁闩包括与储能磙子挡止的挡止端,还包括与合闸电磁铁限位的限位端,挡止端和限位端一个位于转动中心左侧、另一个位于转动中心右侧,合闸锁闩转动行程中具有在挡止端与储能磙子挡止配合时的第一工作位,还具有在合闸电磁铁解除限位时向解锁方向转动的第二工作位,合闸锁闩上设有限制自身向解锁方向转动极限的第一挡止部,合闸锁闩的重心位于挡止端和转动中心之间,以使合闸锁闩在弹簧操动机构合闸后能够利用自重反向转动而复位,合闸锁闩上还设有限制自身反向转动极限的第二挡止部。有益效果：合闸锁闩利用自重复位,省去复位簧和弹簧定位座,减少了零部件的数量、使结构简化。(The invention provides a closing latch and a spring operating mechanism using the closing latch, wherein the closing latch comprises a blocking end and a limiting end, the blocking end is blocked by an energy storage roller, the limiting end is limited by a closing electromagnet, one of the blocking end and the limiting end is positioned on the left side of a rotating center, the other one of the blocking end and the limiting end is positioned on the right side of the rotating center, a first working position is arranged in the rotating stroke of the closing latch when the blocking end is matched with the energy storage roller in a blocking mode, the closing latch also comprises a second working position which rotates towards an unlocking direction when the limiting of the closing electromagnet is relieved, a first blocking part for limiting the rotating limit of the closing latch towards the unlocking direction is arranged on the closing latch, the gravity center of the closing latch is positioned between the blocking end and the rotating center, so that the closing latch can be reset by utilizing the self-weight reverse rotation after the spring operating mechanism is closed, and a second blocking. Has the advantages that: the closing lock latch is reset by self-weight, a reset spring and a spring positioning seat are omitted, the number of parts is reduced, and the structure is simplified.)

1. The utility model provides a closing hasp, is used for rotating the installation department of installing in the frame of spring operating mechanism, is used for stopping the matched end with the energy storage roller stop, its characterized in that: the closing plunger latch also comprises a limiting end which is used for limiting and matching with the closing electromagnet, the rotating center of the closing plunger latch is positioned between the stopping end and the limiting end to form a lever structure, one of the stopping end and the limiting end is positioned on the left side of the rotating center, the other one of the stopping end and the limiting end is positioned on the right side of the rotating center, the stopping end is positioned on the left side and has a tendency of clockwise rotating towards an unlocking direction under the extrusion of the energy storage roller when in stopping and matching with the energy storage roller, and the limiting end at the moment is used for limiting and matching with the closing electromagnet to prevent the closing plunger latch from clockwise; the stopping end is positioned at the right side and has a tendency of rotating in an unlocking direction anticlockwise under the extrusion of the energy storage roller when matched with the energy storage roller stop, the limit end at the moment is used for limiting and matching with the closing electromagnet to prevent the closing latch from rotating anticlockwise, a first working position is arranged in the reciprocating rotation stroke of the closing latch when the stopping end is matched with the energy storage roller stop, the spring operating mechanism is kept in a closing energy storage state when the closing latch is in the first working position, a second working position is also arranged in the reciprocating rotation stroke of the closing latch and rotates in the unlocking direction when the limit end is relieved by the closing electromagnet, the stopping end moves upwards to release the energy storage roller when the closing latch is in the second working position to enable the spring operating mechanism to be capable of closing, and a first stopping part which is matched with the corresponding stopping structure stop to limit the self-to-rotate in the unlocking direction is arranged on the closing latch, the gravity center of the closing latch is positioned between the stopping end and the rotating center so that the closing latch can be reset by utilizing the dead weight to rotate reversely after the spring operating mechanism is closed, and the closing latch is also provided with a second stopping part which is used for limiting and matching with a corresponding limiting structure so as to limit the reverse rotation limit of the closing latch.

2. The closing latch of claim 1, wherein: the first blocking part is composed of the upper side surface of the closing lock latch, and the second blocking part is a protrusion which is convexly arranged on the upper side surface and is used for blocking and matching with the opening rotating shaft of the spring operating mechanism.

3. A closing latch as claimed in claim 1 or 2, wherein: the mounting part is a rotating shaft fixed on the closing plunger latch.

4. A closing latch as claimed in claim 1 or 2, wherein: and the limiting end is provided with a roller which is used for limiting and matching with the closing electromagnet.

5. A closing latch as claimed in claim 1 or 2, wherein: and the stopping end is provided with an outward convex arc surface used for being matched with the energy storage roller in a stopping way, and the circle center of an arc of the section of the outward convex arc surface is positioned at the upper side of the rotating center of the closing latch or coincided with the rotating center of the closing latch.

6. The utility model provides a spring operating mechanism, includes the frame and rotates energy storage gear and the closing hasp of installing in the frame, is provided with the energy storage roller on the energy storage gear, and the closing hasp is including being used for rotating the installation department of installing in the frame, being used for stopping complex with the energy storage roller and stopping the end, its characterized in that: the spring operating mechanism further comprises a closing electromagnet arranged on the rack, the closing plunger latch further comprises a limiting end used for limiting and matching with the closing electromagnet, the rotating center of the closing plunger latch is positioned between the stopping end and the limiting end to form a lever structure, one of the stopping end and the limiting end is positioned on the left side of the rotating center, the other one of the stopping end and the limiting end is positioned on the right side of the rotating center, the stopping end is positioned on the left side and has a tendency of clockwise rotating towards an unlocking direction under the extrusion of an energy storage roller when matched with the energy storage roller, and the limiting end at the moment is used for limiting and matching with the closing electromagnet to prevent the closing plunger latch from clockwise rotating; the stopping end is positioned at the right side and has a tendency of rotating in an unlocking direction anticlockwise under the extrusion of the energy storage roller when matched with the energy storage roller stop, the limit end at the moment is used for limiting and matching with the closing electromagnet to prevent the closing latch from rotating anticlockwise, a first working position is arranged in the reciprocating rotation stroke of the closing latch when the stopping end is matched with the energy storage roller stop, the spring operating mechanism is kept in a closing energy storage state when the closing latch is in the first working position, a second working position is also arranged in the reciprocating rotation stroke of the closing latch and rotates in the unlocking direction when the limit end is relieved by the closing electromagnet, the stopping end moves upwards to release the energy storage roller when the closing latch is in the second working position to enable the spring operating mechanism to be capable of closing, and a first stopping part which is matched with the corresponding stopping structure stop to limit the self-to-rotate in the unlocking direction is arranged on the closing latch, the gravity center of the closing latch is positioned between the stopping end and the rotating center so that the closing latch can be reset by utilizing the dead weight to rotate reversely after the spring operating mechanism is closed, and the closing latch is also provided with a second stopping part which is used for limiting and matching with a corresponding limiting structure so as to limit the reverse rotation limit of the closing latch.

7. The spring operating mechanism of claim 6, wherein: the first blocking part is composed of the upper side surface of the closing lock latch, and the second blocking part is a protrusion which is convexly arranged on the upper side surface and is used for blocking and matching with the opening rotating shaft of the spring operating mechanism.

8. The spring operating mechanism of claim 6 or 7, wherein: the mounting part is a rotating shaft fixed on the closing plunger latch.

9. The spring operating mechanism of claim 6 or 7, wherein: and the limiting end is provided with a roller which is used for limiting and matching with the closing electromagnet.

10. The spring operating mechanism of claim 6 or 7, wherein: and the stopping end is provided with an outward convex arc surface used for being matched with the energy storage roller in a stopping way, and the circle center of an arc of the section of the outward convex arc surface is positioned at the upper side of the rotating center of the closing latch or coincided with the rotating center of the closing latch.

Technical Field

The invention relates to a closing plunger latch and a spring operating mechanism using the closing plunger latch.

Background

At present, the spring operating mechanism is generally used in 252kV power grid equipment, but because the development time of the spring operating mechanism is short, the technology is not complete, and there is still a certain technical problem in manufacturing the spring operating mechanism with stable and reliable performance, and the opening and closing latch system is a main component for ensuring the stability of the opening and closing characteristics of the spring operating mechanism, and is directly related to the stability of the spring operating mechanism and even the stability of the whole power grid system.

Disclosure of Invention

The invention aims to provide a closing lock latch which can reduce the number of parts and simplify the structure; the invention also aims to provide a spring operating mechanism which can reduce the number of parts and simplify the structure.

In order to achieve the purpose, the closing latch adopts the following technical scheme:

a closing latch comprises an installation part, a stopping end and a limiting end, wherein the installation part is rotatably installed on a rack of a spring operating mechanism, the stopping end is used for being in stopping fit with an energy storage roller, the closing latch further comprises a limiting end used for being in limiting fit with a closing electromagnet, the rotating center of the closing latch is located between the stopping end and the limiting end to form a lever structure, one of the stopping end and the limiting end is located on the left side of the rotating center, the other one of the stopping end and the limiting end is located on the right side of the rotating center, the stopping end is located on the left side and has a tendency of clockwise rotation towards an unlocking direction due to extrusion of the energy storage roller when being in stopping fit with the energy storage roller, and the limiting end at the moment is used for; the stopping end is positioned at the right side and has a tendency of rotating in an unlocking direction anticlockwise under the extrusion of the energy storage roller when matched with the energy storage roller stop, the limit end at the moment is used for limiting and matching with the closing electromagnet to prevent the closing latch from rotating anticlockwise, a first working position is arranged in the reciprocating rotation stroke of the closing latch when the stopping end is matched with the energy storage roller stop, the spring operating mechanism is kept in a closing energy storage state when the closing latch is in the first working position, a second working position is also arranged in the reciprocating rotation stroke of the closing latch and rotates in the unlocking direction when the limit end is relieved by the closing electromagnet, the stopping end moves upwards to release the energy storage roller when the closing latch is in the second working position to enable the spring operating mechanism to be capable of closing, and a first stopping part which is matched with the corresponding stopping structure stop to limit the self-to-rotate in the unlocking direction is arranged on the closing latch, the gravity center of the closing latch is positioned between the stopping end and the rotating center so that the closing latch can be reset by utilizing the dead weight to rotate reversely after the spring operating mechanism is closed, and the closing latch is also provided with a second stopping part which is used for limiting and matching with a corresponding limiting structure so as to limit the reverse rotation limit of the closing latch.

The beneficial effects of the technical scheme of the closing lock latch are that: the closing plunger latch also comprises a limiting end, and the closing electromagnet can be in limiting fit with the limiting end so as to prevent the closing plunger latch from rotating towards the unlocking direction, so that the closing plunger latch is kept at a first working position when the stopping end is in stopping fit with the energy storage roller, and the spring operating mechanism is kept in a closing energy storage state; meanwhile, the closing plunger latch is also provided with a second working position, the closing electromagnet relieves the limit of the limit end at the moment, and the closing plunger latch can rotate towards the unlocking direction, so that the energy storage roller is opened to enable the spring operating mechanism to be closed, and the closing plunger latch can complete the closing energy storage and closing processes due to the arrangement of the two working positions.

And above all, one of the stopping end and the limiting end is positioned on the left side of the rotating center, the other one is positioned on the right side of the rotating center, the stopping end moves upwards when the closing latch is positioned at the second working position, and in addition, the gravity center of the closing latch is positioned between the stopping end and the rotating center, so that after closing, the closing latch can reset by utilizing the dead weight to rotate reversely.

The first stopping part can limit the rotation limit of the closing lock latch to the unlocking direction, and the phenomenon that the closing lock latch cannot be reset by self weight due to overlarge rotation amplitude is avoided; and the second stopping part can limit the limit of reverse rotation of the closing latch, so that the closing latch is prevented from exceeding the first working position due to overlarge reverse rotation amplitude.

Furthermore, in order to fully utilize and simplify the structure of the closing latch and fully utilize the inherent components of the spring operating mechanism, and further reduce the number of the components of the system, the first blocking part is formed by the upper side surface of the closing latch, and the second blocking part is a protrusion which is convexly arranged on the upper side surface and is used for blocking and matching with the opening rotating shaft of the spring operating mechanism.

Furthermore, in order to facilitate the rotating assembly of the closing latch and improve the assembly efficiency, the mounting part is a rotating shaft fixed on the closing latch.

Furthermore, in order to reduce the matching friction force between the limiting end and the closing electromagnet and facilitate the rotation of the closing plunger latch, the limiting end is provided with a roller which is used for being matched with the closing electromagnet in a limiting way.

Furthermore, in order to enable the forces of the energy storage rollers at different positions acting on the closing latch to generate a torque rotating towards the unlocking direction on the closing latch, an outer convex arc surface used for being matched with the energy storage roller in a blocking mode is arranged on the blocking end, and the circle center of an arc of the section of the outer convex arc surface is located on the upper side of the rotating center of the closing latch or coincides with the rotating center of the closing latch.

In order to achieve the purpose, the spring operating mechanism adopts the following technical scheme:

a spring operating mechanism comprises a frame, an energy storage gear and a closing latch, wherein the energy storage gear and the closing latch are rotatably arranged on the frame, an energy storage roller is arranged on the energy storage gear, the closing latch comprises an installation part rotatably arranged on the frame and a stopping end matched with the energy storage roller in a stopping way, the spring operating mechanism also comprises a closing electromagnet arranged on the frame, the closing latch also comprises a limiting end matched with the closing electromagnet in a limiting way, the rotating center of the closing latch is positioned between the stopping end and the limiting end to form a lever structure, and one of the stopping end and the limiting end is positioned on the left side of the rotating center, the other is positioned on the right side of the rotation center, the stopping end is positioned on the left side and is extruded by the energy storage roller when matched with the energy storage roller to have a tendency of rotating clockwise towards an unlocking direction, and the limiting end at the moment is used for limiting and matching with the closing electromagnet to prevent the closing latch from rotating clockwise; the stopping end is positioned at the right side and has a tendency of rotating in an unlocking direction anticlockwise under the extrusion of the energy storage roller when matched with the energy storage roller stop, the limit end at the moment is used for limiting and matching with the closing electromagnet to prevent the closing latch from rotating anticlockwise, a first working position is arranged in the reciprocating rotation stroke of the closing latch when the stopping end is matched with the energy storage roller stop, the spring operating mechanism is kept in a closing energy storage state when the closing latch is in the first working position, a second working position is also arranged in the reciprocating rotation stroke of the closing latch and rotates in the unlocking direction when the limit end is relieved by the closing electromagnet, the stopping end moves upwards to release the energy storage roller when the closing latch is in the second working position to enable the spring operating mechanism to be capable of closing, and a first stopping part which is matched with the corresponding stopping structure stop to limit the self-to-rotate in the unlocking direction is arranged on the closing latch, the gravity center of the closing latch is positioned between the stopping end and the rotating center so that the closing latch can be reset by utilizing the dead weight to rotate reversely after the spring operating mechanism is closed, and the closing latch is also provided with a second stopping part which is used for limiting and matching with a corresponding limiting structure so as to limit the reverse rotation limit of the closing latch.

The technical scheme of the spring operating mechanism has the beneficial effects that: the closing plunger latch also comprises a limiting end, and the closing electromagnet can be in limiting fit with the limiting end so as to prevent the closing plunger latch from rotating towards the unlocking direction, so that the closing plunger latch is kept at a first working position when the stopping end is in stopping fit with the energy storage roller, and the spring operating mechanism is kept in a closing energy storage state; meanwhile, the closing plunger latch is also provided with a second working position, the closing electromagnet relieves the limit of the limit end at the moment, and the closing plunger latch can rotate towards the unlocking direction, so that the energy storage roller is opened to enable the spring operating mechanism to be closed, and the closing plunger latch can complete the closing energy storage and closing processes due to the arrangement of the two working positions.

And above all, one of the stopping end and the limiting end is positioned on the left side of the rotating center, the other one is positioned on the right side of the rotating center, the stopping end moves upwards when the closing latch is positioned at the second working position, and in addition, the gravity center of the closing latch is positioned between the stopping end and the rotating center, so that after closing, the closing latch can reset by utilizing the dead weight to rotate reversely.

The first stopping part can limit the rotation limit of the closing lock latch to the unlocking direction, and the phenomenon that the closing lock latch cannot be reset by self weight due to overlarge rotation amplitude is avoided; and the second stopping part can limit the limit of reverse rotation of the closing latch, so that the closing latch is prevented from exceeding the first working position due to overlarge reverse rotation amplitude.

Furthermore, in order to fully utilize and simplify the structure of the closing latch and fully utilize the inherent components of the spring operating mechanism, and further reduce the number of the components of the system, the first blocking part is formed by the upper side surface of the closing latch, and the second blocking part is a protrusion which is convexly arranged on the upper side surface and is used for blocking and matching with the opening rotating shaft of the spring operating mechanism.

Furthermore, in order to facilitate the rotating assembly of the closing latch and improve the assembly efficiency, the mounting part is a rotating shaft fixed on the closing latch.

Furthermore, in order to reduce the matching friction force between the limiting end and the closing electromagnet and facilitate the rotation of the closing plunger latch, the limiting end is provided with a roller which is used for being matched with the closing electromagnet in a limiting way.

Furthermore, in order to enable the forces of the energy storage rollers at different positions acting on the closing latch to generate a torque rotating towards the unlocking direction on the closing latch, an outer convex arc surface used for being matched with the energy storage roller in a blocking mode is arranged on the blocking end, and the circle center of an arc of the section of the outer convex arc surface is located on the upper side of the rotating center of the closing latch or coincides with the rotating center of the closing latch.

Drawings

FIG. 1 is a schematic view of a closing latch system of a spring operating mechanism according to the prior art;

FIG. 2 is a force diagram of the closing latch of FIG. 1;

fig. 3 is a partial structural view of the spring operating mechanism according to the present invention (the closing latch is at the first working position, and the spring operating mechanism is in the closing energy storage state);

fig. 4 is a partial structural view of the spring operating mechanism according to the present invention (the closing latch is at the second working position, and the spring operating mechanism is at a state to be closed);

fig. 5 is a block diagram of the closing latch of fig. 3 and 4;

fig. 6 is a force diagram of the closing latch of fig. 3.

In the figure: 1. a first spring positioning seat; 2. a latch return spring; 3. a limiting shaft; 4. an energy storage roller; 5. closing a lock latch; 6. a blocking shaft; 7. a switching-on transmission part; 8. an anti-empty-closure member; 9. the anti-idle closing reset spring; 10. a second spring positioning seat; 11. an electromagnet; 12. a drive plate; 13. an output shaft; 14. a connecting rod; 15. an energy storage gear; 16. a weather-proof plywood; 161. a first rotating shaft; 17. a brake-separating rotating shaft; 18. closing a lock latch; 181. a circular arc surface; 182. stopping the side surface; 183. a latch board; 184. a second rotating shaft; 185. a protrusion; 186. a roller; 187. a roller shaft; 19. a small latch; 191. a third rotating shaft; 192. a limiting shaft; 20. an electromagnet; 201. a push rod; 21. mounting a plate; 211. a limiting hole; 22. an energy storage roller.

Detailed Description

An embodiment of the spring operating mechanism of the present invention, as shown in fig. 3 and 4, includes a frame (not shown), and an energy storage gear 15 and a closing latch 18 rotatably mounted on the frame, wherein the energy storage gear 15 is provided with an energy storage roller 22, and the energy storage gear 15 can perform closing energy storage and closing operations when rotating clockwise.

The rack is also provided with a closing electromagnet, the closing electromagnet comprises an electromagnet body 20 and a small latch 19 connected with a push rod 201 of the electromagnet body 20, a mounting plate 21 is fixed on the rack, the small latch 19 is rotatably mounted on the mounting plate 21 through a third rotating shaft 191, and when the push rod 201 directly moves, the small latch 19 can be driven to rotate around the third rotating shaft 191. The mounting plate 21 is provided with a limiting hole 211, the small latch 19 is provided with a limiting shaft 192 penetrating through the limiting hole 211, and the size of the limiting hole 211 is larger than that of the limiting shaft 192, so that the movement of the limiting shaft 192 is limited, and the rotation angle of the small latch 19 is limited.

As shown in fig. 5, the closing latch 18 includes a latch plate 183, the latch plate 183 is provided with a mounting portion for rotatably mounting on the frame, the mounting portion in this embodiment is a second rotating shaft 184 riveted to the latch plate 183, the latch plate 183 has a stopping end (i.e., the left end in fig. 3 ~ and fig. 6) for stop-fitting with the energy-accumulating roller 22, and the stopping end is pressed by the energy-accumulating roller when stop-fitting with the energy-accumulating roller 22 and tends to rotate clockwise in the unlocking direction.

The latch plate 183 further has a limit end (i.e., a right end in fig. 3 ~ in fig. 6) for limit-engaging with the small latch 19 of the closing electromagnet to prevent the latch plate 183 from rotating in the unlocking direction, and the rotation center of the latch plate 183 is located between the limit end and the stop end to form a lever structure, as shown in fig. 5, a roller 186 is rotatably mounted on the stop end in the present embodiment by a riveted roller shaft 187, one end of the small latch 19 is connected to the push rod 201, the other end forms an engaging portion for limit-engaging with the roller 186, and the third rotating shaft 191 is located therebetween to form a lever structure.

The reciprocating rotation stroke of the latch plate 183 has a first operating position in which the stopping end is engaged with the energizing roller 22 for stopping, and a second operating position in which the latch plate 19 is rotated in the unlocking direction when the small latch 19 releases the limit to the limit end, and the spring operating mechanism is maintained in the closing energizing state (as shown in fig. 3) when the latch plate 183 is in the first operating position, and the latch plate 183 is moved away from the energizing roller 22 to allow the spring operating mechanism to be closed (as shown in fig. 4) when the latch plate 183 is in the second operating position.

The spring operating mechanism further comprises an air-defense plate 16 which is rotatably installed on the rack, the air-defense plate 16 is synchronously and rotatably connected with an output shaft 13 of the spring operating mechanism through a connecting rod 14, specifically, a transmission plate 12 is fixed on the output shaft 13, when the brake is opened, the output shaft 13 rotates clockwise to drive the transmission plate 12 to rotate clockwise, and then the connecting rod 14 drives the air-defense plate 16 to rotate clockwise around a first rotating shaft 161; when the switch is switched on, the output shaft 13 rotates anticlockwise, and the air defense plate 16 is driven to rotate anticlockwise through the transmission plate 13 and the connecting rod 14.

The air break plate 16 has a connecting end (i.e., an upper end in fig. 3) connected to the link 14, and a stopping end (i.e., a lower end in fig. 3) for stopping-cooperating with the latch plate 183 to prevent the latch plate 183 from rotating in the unlocking direction, and the center of rotation of the air break plate 16 is located between the connecting end and the stopping end to form a lever structure. The reciprocating rotation stroke of the air defense plate 16 has an air defense station (as shown in fig. 3) which enables the stopping end to be in stopping fit with the latch plate 183 when the latch plate 183 is in the first working position so as to avoid the occurrence of secondary closing, as shown in fig. 5, the upper side surface of the latch plate 183 is a stopping side surface 182, and the stopping end of the air defense plate 16 is in stopping fit with the stopping side surface 182.

As shown in fig. 3, when the air defense joint plate 16 is in the air defense joint station, even if the electromagnet body 20 malfunctions due to a fault, and the small latch 19 releases the limit of the limit end of the latch plate, the latch plate 183 still cannot rotate clockwise in the unlocking direction due to the limit of the air defense joint plate 16, so that the secondary joint phenomenon can be avoided. At this time, the latch plate 183 is subjected to three forces, i.e., the pressing force F2 of the energizing roller 22, the stopping force F1 of the air lock plate 16, and the supporting force F3 of the second rotating shaft 184, and the three forces are balanced, that is, at this time, the roller 186 and the engaging portion of the small latch 19 are spaced from each other and do not contact each other, and the latch plate 183 is restricted from rotating clockwise only by the air lock plate 16. The significance of this arrangement is that, during the closing energy storage, when the energy storage roller 22 contacts the latch plate 183 at a moment, an impact force is generated on the latch plate 183, and at the same time, the latch plate 183 tends to rotate clockwise, and the air-break preventing plate 16 is closer to the latch plate 183, and first contacts the latch plate 183, and the engaging portion of the small latch 19 and the roller 186 do not contact, so that the impact force is absorbed by the air-break preventing plate 16 and does not act on the small latch 19, thereby protecting the small latch 19 and the electromagnet body 20, and ensuring the service life thereof.

It should be noted that, after the assembly of the spring operating mechanism is completed, the spring operating mechanism generally needs to perform the closing energy storage first, and after the first closing energy storage is completed, the closing operation is performed, and then immediately after the closing operation, the closing energy storage is performed again (this is true after each closing), and then the opening operation is performed, and after the opening operation is completed, the closing operation is performed, and this cycle is the normal use process of the spring operating mechanism.

Therefore, the anti-idle-locking plate 16 also has an avoidance station for disengaging the latch plate 183 under the driving of the connecting rod 14 during opening, so as to provide a rotation space for unlocking the closing latch, i.e. clockwise rotation of the latch plate 183, and prepare for closing of the spring operating mechanism. At the moment when the air lock plate 16 is rotated away from the latch plate 183, the latch plate 183 is still pressed by the energized rollers 22, and a slight clockwise rotation (caused by the gap between the roller 186 and the engaging portion of the small latch 19) occurs, and then the engaging portion of the small latch 19 is in limited engagement with the roller 186, preventing the latch plate 183 from continuing to rotate clockwise.

When the switch is closed, the electromagnet body 20 operates, so that the push rod 201 pushes the small latch 19 to rotate clockwise, the engaging portion of the small latch 19 releases the roller, the roller 186 is released from being limited, the latch plate 183 instantaneously rotates clockwise under the extrusion of the energy storage roller 22, the blocking end of the latch plate 183 moves upward to release the energy storage roller 22, as shown in fig. 4, and then the spring operating mechanism can be quickly closed under the action of a closing spring (not shown).

As shown in fig. 4, the stopping end hits the air defense plate 16 during the upward movement, so that the air defense plate 16 actually forms a stopping structure for limiting the rotation limit of the closing latch in the unlocking direction, and the stopping side surface 182 forms a first stopping portion cooperating with the stopping structure to limit the rotation limit of the air defense plate 16, so that the air defense plate 16 is fully utilized, and no other stopping structure is needed, thereby reducing the number of parts and simplifying the system structure. Namely, the air-defense plywood can realize three functions in total, and firstly, the air-defense plywood is matched with a closing plunger latch stop to avoid secondary closing caused by misoperation of a closing electromagnet after closing; secondly, when the energy is stored during closing, the energy storage device is firstly matched with the stop of the closing plunger latch, so that a gap is kept between the limiting end of the closing plunger latch and the small plunger latch, and the small plunger latch and the electromagnet body are prevented from bearing impact force; and thirdly, the clockwise rotation limit of the closing lock latch is limited, the arrangement of a stopping structure is reduced, and the number of parts is reduced.

Further, as shown in fig. 6, the center of gravity O3 of the latch plate 183 is located between the stopping end and the center of rotation O1, so that when the latch plate 183 hits the air defense plate 16, it will be quickly rotated in the reverse direction to be restored by the collision force and the self-weight, i.e., the center of gravity O3 can provide the counterclockwise rotation moment T3 to the latch plate 183.

In addition, as shown in fig. 5, the stopping side 182 is provided with a protrusion 185 engaged with the opening rotary shaft 17 of the spring operating mechanism, so that the reverse rotation limit of the closing latch can be limited, that is, the opening rotary shaft 17 inherent to the spring operating mechanism itself constitutes a limiting structure for limiting the reverse rotation limit of the closing latch, and the protrusion 185 constitutes a second stopping portion engaged with the second stopping portion for limiting the reverse rotation limit of the closing latch. Therefore, the inherent structure of the spring operating mechanism is fully utilized, and other limiting structures are not required to be arranged, so that the number of parts can be reduced, and the system structure is simplified.

It should be noted that, in the closing process, the air defense plate 16 is driven by the output shaft 13 and the connecting rod 14 to rotate counterclockwise to return, so that the stopping end is located at the position capable of being matched with the latch plate 183 again, and preparation is made for the next closing energy storage.

As shown in fig. 5 and 6, in the present embodiment, the latch plate 183 is provided at the blocking end with an outward arc surface 181 for blocking engagement with the energy accumulating roller 22, the entire latch plate 183 is directly and integrally formed, the second rotating shaft 184 is fixed to the latch plate 183 by riveting, and the roller shaft 187 with the roller 186 is fixed to the latch plate 183 by riveting, so that the modular design of the closing latch is realized, the processing consistency of the closing latch parts is improved, the interchangeability is enhanced, and the assembling efficiency can be improved.

Here, the center O2 of the arc of the cross section of the convex arc surface 181 is located on the upper side of the rotation center O1 of the closing latch 18, because of the machining error and the assembly error, when the energy storage roller 22 contacts with the closing latch, the contact point may be up or down (as shown in fig. 6), however, the pressing force of the energy storage roller 22 to the closing latch 18 passes through the center O2 regardless of the contact point being up or down, so that the clockwise rotation moments T1 and T2 can be generated to the closing latch 18 with respect to the rotation center O1, so that the closing latch 18 is tightly pressed against the air defense plate 16 or the small latch 19 and is maintained in a balanced state.

In contrast to the prior art, when the charging roller 4 is positioned upward (solid line position in the figure) as shown in fig. 2, a clockwise rotation torque T3 is generated in the closing latch 5, and this pushes the closing latch 5 against the stopper shaft 6 as shown in fig. 1, and the closing latch 5 is maintained in a balanced state. If the energy-storing roller 4 is located downward (in the dotted line), a counterclockwise rotation torque T4 is generated to the closing latch 5, which may cause the closing latch 5 to have a tendency to compress the latch return spring 2 to unlock, so that the closing latch 5 cannot stop the energy-storing roller 4, and the spring operating mechanism cannot work normally.

The spring operating mechanism is used for realizing switching-on and switching-off of the circuit breaker, and the working process of the spring operating mechanism is divided into three states: the specific working principle of the energy storage process, the closing process and the opening process is as follows:

when the energy storage roller 22 rotates to be matched with the stopping end of the closing latch in a stopping way, the limit end of the closing latch is matched with the small latch 19 in a limiting way, and the closing energy storage is finished. When the switch is switched on for the first time, the electromagnet body 20 acts, the push rod 201 pushes the small latch 19 to rotate clockwise, the small latch 19 releases the limit of the limit end of the switch-on latch, the switch-on latch rotates clockwise under the extrusion force generated by the energy storage roller to unlock, the energy storage roller is released, the energy storage gear rotates clockwise under the action of a switch-on spring, and then the output shaft 13 is driven to rotate anticlockwise through a series of middle cam mechanisms (not shown in the figure), so that the switch-on process is completed. In the process, on one hand, an opening spring (not shown in the figure) completes energy storage, on the other hand, a closing latch is driven to the air defense plate and reset under the action of impact force and self weight, and meanwhile, the air defense plate rotates anticlockwise to a position where the stopping end can be matched with the closing latch in a stopping mode.

And then, continuing clockwise rotation next to the energy storage gear to perform closing energy storage (after each closing, the energy storage gear performs closing energy storage operation, and in the whole closing and closing energy storage process, the energy storage gear rotates for one circle in total).

Then, switching off, wherein the air defense plate is rotated away from the switching-on plunger latch during switching off, and the limit end of the switching-on plunger latch is in limit fit with the small plunger latch to prepare for next switching-on. Then, the energy is stored in the closing and the closing, and the process is circulated.

In other embodiments of the spring operating mechanism, the circle center of the arc of the section of the convex arc surface on the stopping end can also coincide with the rotation center of the closing latch; of course, instead of providing the convex arc surface, the side surface of the stopping end engaged with the energy storage roller may be provided as a plane.

In other embodiments of the spring operated mechanism, the closing latch may not include a pivot, and the mounting portion of the closing latch may be only one mounting hole of the latch plate.

In other embodiments of the spring operating mechanism, the stopping end of the closing latch may be located on the right side, and the limiting end is located on the left side, for example, the structures in fig. 3 and fig. 4 may be integrally symmetrical left and right with respect to a vertical line, at this time, the closing latch has a tendency to rotate counterclockwise in the unlocking direction due to being pressed by the energy storage roller, and the limiting end is used for limiting and matching with the closing electromagnet to prevent the closing latch from rotating counterclockwise, and the rest of the principle is the same as the first embodiment, and will not be described in detail herein.

In other embodiments of the spring operating mechanism, the closing electromagnet may only include the electromagnet body, and at this time, the push rod of the electromagnet body may be used to be in limit fit with the limit end of the closing latch, and at this time, the fit portion is the end of the push rod, and of course, the mounting plate and the small latch may be omitted.

In other embodiments of the spring operating mechanism, the limiting end may not be provided with a roller, but directly uses the end to limit and cooperate with the closing electromagnet.

In other embodiments of the spring operating mechanism, when the air defense closing plate is at the air defense closing station, the limit end of the closing latch and the matching part of the closing electromagnet can also be in contact, namely the closing latch is simultaneously in contact with the matching parts of the air defense closing plate and the closing electromagnet; certainly, when the air defense board is at the air defense closing station, a small gap can be formed between the closing latch and the air defense board, and the matching part of the closing latch and the closing electromagnet is contacted, at this time, when the closing electromagnet malfunctions, the closing latch can firstly slightly rotate and then is contacted with the air defense board, in the process, the closing latch is still at the first working position in blocking matching with the energy storage roller, and the air defense board can still prevent secondary closing.

In other embodiments of the spring operating mechanism, when the spring operating mechanism includes the air-lock prevention plate, the first stopping portion may not be formed by the upper side surface of the closing latch, for example, a boss may be disposed on the upper side surface of the closing latch, and the boss forms the first stopping portion; certainly, the spring operating mechanism may not include an anti-idle-closing plate, the spring operating mechanism does not have an anti-idle-closing function, at this time, when the closing latch is at the first working position, the limit end of the closing latch is in limit-fit contact with the closing electromagnet directly, and in order to limit the rotation limit of the closing latch in the unlocking direction, a stop shaft may be disposed at the right lower side of the closing latch, the stop shaft constitutes a stop structure, at this time, the lower side surface of the closing latch constitutes a first stop portion, and of course, a stop shaft may be disposed at the left upper side of the closing latch, the stop shaft constitutes a stop structure, at this time, the upper side surface of the closing latch still constitutes a first stop portion.

In other embodiments of the spring operating mechanism, when the opening rotating shaft of the spring operating mechanism is used as the limiting structure, the second blocking portion may not be a protrusion protruding from the upper side surface of the closing latch, for example, the upper side surface of the closing latch can be directly matched with the opening rotating shaft in a blocking manner by reasonably designing the shape of the opening latch and the position of the opening rotating shaft, and the second blocking portion is formed by the upper side surface of the closing latch; in other embodiments, the opening rotating shaft may not be used as the limiting structure, for example, a blocking shaft may be provided at the lower left side of the closing latch, the blocking shaft may form the limiting structure, and the lower side surface of the closing latch and the blocking shaft are engaged to limit the reverse rotation limit of the closing latch, in which case the second blocking portion may be formed by the lower side surface of the closing latch.

In other embodiments of the spring operating mechanism, even if the impact force of the closing latch on the air defense plate is not very large, the closing latch can still rotate reversely by the self-weight to reset.

The embodiment of the closing latch of the present invention is shown in fig. 3 ~ and fig. 6, and the specific structure of the closing latch is the same as that of the spring operating mechanism in the above embodiment, and therefore, the detailed description thereof is not repeated.