Linkage type anti-leakage catch for spring operating mechanism and method

Abstract

This invention belongs to the field of high-voltage power transmission and transformation technology, and discloses a linkage-type anti-leakage closing stop and method for a spring-operated mechanism. The method includes: a closing power mechanism for actuating the transmission roller to drive the output crank arm counterclockwise; a closing support mechanism for supporting the output crank arm in the closing position; a opening mechanism for releasing the lock of the primary stop on the fork-shaped rotating stop; a reset power mechanism for actuating the fork-shaped short connecting plate, fork-shaped long connecting plate, intermediate connecting rod, fork-shaped rotating stop, connecting rod, and linkage crank arm to reset each component to the pre-closing position; and a limiting mechanism for restricting the support crank arm to a position just past its dead point. This invention solves the leakage closing problem in principle, and the closing lock is completed naturally without any forced action. Simultaneously, this invention eliminates the hidden danger of incomplete phase closing in phase-operated circuit breakers below 252kV.

Description

Technical Field

[0001] This invention belongs to the field of high-voltage power transmission and transformation technology, and particularly relates to a linkage-type anti-leakage stop and method for a spring-operated mechanism. Background Technology

[0002] Currently, spring operating mechanisms are crucial equipment in high-voltage power transmission and transformation, and are an important component of high-voltage circuit breakers. The closing and opening operations of high-voltage circuit breakers are achieved through these mechanisms. Spring operating mechanisms are characterized by low cost, simple structure, intuitive principle, and low maintenance, making them suitable for widespread use in high-voltage circuit breakers. However, existing spring operating mechanisms used in high-voltage circuit breakers commonly suffer from the "closing-and-opening phenomenon," meaning the closing position cannot be locked, also known as leakage closing. This is especially problematic with high-power spring mechanisms, which have multiple locking stages. It is theoretically very difficult for each stage of the locking mechanism to simultaneously and sequentially engage and lock within a very short time. The inability to effectively address this problem severely impacts the safe and reliable operation of the spring mechanism. With the development of the national power system, the continuous increase in system capacity, and the rising transmission voltage, advancements in circuit breaker technology urgently require high-power spring operating mechanisms. Furthermore, the national power grid operation demands a new type of spring operating mechanism with reliable closing and opening locking, stable mechanical characteristics, and high output power. Since the invention of spring mechanisms, leakage closing (closing and then immediately opening) has been a fatal flaw of this type of mechanism. The closing latch can only be completed by the forced and rapid action of the opening lever. Even a slight delay will result in leakage closing, thus posing a great danger to the operation of the circuit breaker (non-full-phase closing).

[0003] Based on the above analysis, the problems and defects of the existing technology are as follows: during operation, the spring mechanism is prone to leakage if it is slowed down even slightly, which can easily bring great danger to the operation of the circuit breaker.

[0004] The difficulty in solving the above problems and defects lies in the fact that the leakage problem has not been completely solved both domestically and internationally, and remains a technological gap in spring mechanisms. Especially for 550kV circuit breakers, the spring operating mechanism cannot be safely used on this product unless the leakage problem is completely resolved.

[0005] The significance of solving the above problems and defects is as follows: This invention enables the reliable application of spring-operated mechanisms in ultra-high voltage circuit breakers. Firstly, it prevents insufficient opening and closing time of the circuit breaker due to leakage, resulting in insufficient air return to the compression cylinder, and the inability to extinguish the arc after leakage opening, leading to failure to interrupt the circuit and potentially causing an explosion. Secondly, if the leakage-closing switch needs to be closed again, each closure will generate overvoltage in the power grid, and each additional closure exposes the power grid equipment to an additional overvoltage threat. Thirdly, leakage prevents the power grid from transmitting electricity, causing significant losses to electricity customers. Summary of the Invention

[0006] To address the problems existing in the prior art, the present invention provides a linkage-type anti-leakage stop and method for a spring-operated mechanism.

[0007] This invention is implemented as follows: a linkage-type leak-proof locking mechanism for a spring-operated mechanism, the linkage-type leak-proof locking mechanism for the spring-operated mechanism comprising:

[0008] A closing power mechanism used to drive the transmission roller to rotate the output crank arm counterclockwise;

[0009] The closing support mechanism is used to support the output crank arm in the closing position;

[0010] The tripping mechanism is used to release the lock of the primary stop on the fork-shaped rotary stop.

[0011] A reset power mechanism used to drive the fork-shaped short connecting plate, fork-shaped long connecting plate, intermediate connecting rod, fork-shaped rotating stop, connecting rod and linkage crank arm to reset each component to the ready closing position.

[0012] A limiting mechanism used to restrict the support crank arm to a position just past the dead center.

[0013] Furthermore, a camshaft is fixed to the wall panel of the closing power mechanism, and a cam is mounted on the camshaft;

[0014] An output shaft is fixed to the wall panel, an output crank arm is fixed to the output shaft, and a transmission roller is fixed to the output crank arm via a second pin.

[0015] Furthermore, the first-stage stop in the closing support mechanism is embedded with a first bearing, the screw is screwed onto the wall plate, and the first-stage stop is mounted on the screw; the first-stage stop is connected to the intermediate connecting rod and the fork-shaped rotating stop respectively through the bearing and the pin.

[0016] The linkage crank arm is hinged to the connecting rod via the sixth axle pin, and the connecting rod is hinged to the support crank via the seventh axle pin; the support crank arm is fitted with a bearing, the shaft is mounted on the wall panel, and the support crank arm is mounted on the shaft;

[0017] The intermediate connecting rod is connected to the fork-shaped long connecting plate and the fork-shaped short connecting plate respectively through the intermediate shaft pin, and the fork-shaped short connecting rod is hinged to the support crank arm through the fifth shaft pin;

[0018] One end of the fork-shaped long connecting plate is embedded in the output crank arm, and the hole at the other end is aligned with the middle hole of the intermediate connecting rod and the fork hole of the fork-shaped short connecting plate, and is hinged with an intermediate shaft pin.

[0019] Furthermore, the linkage crank arm is mounted on the first shaft, the first shaft is fitted with an oil-free bearing, and the linkage crank arm is fixed to the wall panel.

[0020] Furthermore, the fork-shaped rotating chuck is embedded in the second bearing, the first stepped shaft and the second stepped shaft are respectively mounted on the second bearing, the second stepped shaft is mounted on the wall panel, and the first stepped shaft is mounted on the support;

[0021] The four holes of the support are aligned with the first stepped shaft, the first shaft, the limit shaft, and the second shaft respectively, and then installed and tightened with bolts.

[0022] Furthermore, the intermediate connecting rod is placed in a groove with a roller bearing and then into the groove of the fork-shaped rotating stop. The intermediate connecting rod and the fork-shaped rotating stop are hinged together in the groove by a first pivot pin.

[0023] Furthermore, in the circuit breaker tripping mechanism, a tripping electromagnet is fixed to the wall panel by bolts, and the tripping electromagnet is connected to the lever.

[0024] The lever is embedded in the first-level chuck, one end of which is connected to one end of a torsion spring. The torsion spring is fitted onto the torsion spring shaft, and the other end of the torsion spring is attached to the third bolt.

[0025] The lever is embedded in the first-level chuck, with equal lengths protruding from both ends.

[0026] Furthermore, in the reset power mechanism, the lower end of the middle connecting rod is hinged to the long hole end of the slotted connecting rod by a third shaft pin, and the other end of the slotted connecting rod is hinged to the linkage crank arm and the tension spring by a fourth shaft pin; the other end of the tension spring is hung on the second bolt, and the second bolt is screwed onto the wall panel.

[0027] Furthermore, a limiting shaft is fixed on the wall plate of the limiting mechanism.

[0028] Another object of the present invention is to provide a method for preventing leakage of a spring-operated mechanism using a linkage-type leak-proof locking mechanism, wherein the method for preventing leakage of a spring-operated mechanism using a linkage-type leak-proof locking mechanism includes:

[0029] Closing process: When the spring force F of the closing mechanism drives the cam to rotate clockwise, the cam pushes the transmission roller to drive the output crank arm to rotate counterclockwise; during the closing process, the fork-shaped long connecting rod, the fork-shaped short connecting rod, and the middle connecting rod move to the right together;

[0030] Just before the closing position is reached, the intermediate connecting rod pulls the linkage crank arm via the slotted connecting rod. The linkage crank arm then pulls the support crank arm through the dead point via the connecting rod, and the limit shaft restricts the support crank arm to the position just after passing the dead point. At this point, the output crank arm is supported by the support crank arm, the fork-shaped short connecting plate, the fork-shaped long connecting plate, the intermediate connecting rod, the fork-shaped rotating stop, and the first-stage stop of the locking fork-shaped rotating stop, as shown in the figure. Thus, the closing action is completed.

[0031] Opening process: When the opening electromagnet is energized, the electromagnet touches the lever and drives the first-stage stop to rotate counterclockwise, thereby unlocking the first-stage stop from locking the fork-shaped rotating stop. At this time, the pushing force from the opening spring on the output crank arm makes it rotate clockwise. The fork-shaped long connecting plate, fork-shaped short connecting plate, intermediate connecting rod and fork-shaped rotating stop move in the direction shown.

[0032] After the circuit breaker is in the open position, the linkage crank arm rotates clockwise under the tension of the tension spring, thereby driving the fork-shaped short connecting plate, fork-shaped long connecting plate, intermediate connecting rod, fork-shaped rotating stop, connecting rod and linkage crank arm to move in the indicated direction, so that each component is reset to the ready closing position. Under the action of the torsion spring, the first-stage stop rotates clockwise to reset, and relocks the fork-shaped rotating stop to wait for the next closing.

[0033] Combining all the above technical solutions, the advantages and positive effects of this invention are as follows: The linkage-type anti-leakage closing device in this invention solves the leakage closing problem in principle; the closing and locking do not require any forced action and are completed naturally; and it also brings the following functional and performance improvements to the spring operating mechanism:

[0034] First, the leakage-proof closing function completely solves the problem of immediate opening after closing, eliminating the hidden danger of incomplete phase closing in phase-operated circuit breakers below 252kV. In particular, it avoids the serious damage to power equipment caused by voltage rise due to incomplete phase closing in 252kV circuit breakers.

[0035] Secondly, the tripping control system does not require a start-up time. In principle, once the electromagnet completes its action, the output shaft of the mechanism immediately drives the circuit breaker to trip, thus minimizing the tripping time.

[0036] Third, the linkage-type anti-leakage closing switch does not require a closing position locking process and time, that is, the closing lock does not occupy the closing and opening time period. Therefore, the closing and opening time of the mechanism can be shortened to the shortest possible time.

[0037] Fourth, because each stage of the interlocking anti-leakage latch system is a hinged connection and the pressure load is borne by the cylindrical surface of the pin, the interlocking anti-leakage latch can withstand a larger load, making it very suitable for the needs of high-power spring mechanisms.

[0038] Fifth, after adopting the linkage-type anti-leakage closing stop, the tail of the transmission cam does not need to provide a dedicated rotation angle and energy consumption for the closing and locking of the stop. This rotation angle energy consumption can be used for the closing power.

[0039] Sixth, the linkage-type anti-leakage closing stop can prevent overshoot during closing. Since the linkage-type anti-leakage closing stop is hinged to the output crank arm, and because the stop has its own closing positioning shaft, after closing, the overshoot action of the output crank arm is restricted by the stop positioning device and cannot overshoot. Attached Figure Description

[0040] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the linkage-type anti-leakage latch structure arrangement for the spring operating mechanism provided in this embodiment of the invention.

[0042] Figure 2 This is a cross-sectional view of the linkage anti-leakage stop for the spring operating mechanism provided in this embodiment of the invention.

[0043] Figure 3 This is a cross-sectional view of the linkage anti-leakage latch for the spring operating mechanism provided in the embodiment of the present invention;

[0044] Wherein, a, AA sectional view; b, BB sectional view; c, CC sectional view; d, DD sectional view; e, EE sectional view; f, FF sectional view.

[0045] Figure 4 This is a schematic diagram of the starting position of the closing action of the linkage-type anti-leakage closing stopper for the spring operating mechanism provided in the embodiment of the present invention.

[0046] Figure 5 This is a schematic diagram of the closing process of the linkage-type anti-leakage closing stop for the spring operating mechanism provided in the embodiment of the present invention.

[0047] Figure 6 This is a schematic diagram of the closing position of the linkage-type anti-leakage closing stop for the spring operating mechanism provided in the embodiment of the present invention.

[0048] Figure 7 This is a schematic diagram of the linkage-type anti-leakage closing stop mechanism for the spring operating mechanism provided in this embodiment of the invention during the opening and closing process.

[0049] Figure 8 This is a schematic diagram of the tripping position of the linkage-type anti-leakage closing switch for the spring operating mechanism provided in this embodiment of the invention.

[0050] Figure 9 This is a schematic diagram of the linkage anti-leakage clutch reset process for the spring operating mechanism provided in this embodiment of the invention.

[0051] Figure 10 This is a schematic diagram showing the linkage-type anti-leakage locking lever of the spring operating mechanism provided in this embodiment of the invention resetting to the ready-to-close position.

[0052] Figure 11This is a three-dimensional schematic diagram of the main components of the closing locking device provided in the embodiment of the present invention, which is installed on the spring operating mechanism.

[0053] Figure 12 This is a schematic diagram of the structure of the fork-shaped rotating stop provided in an embodiment of the present invention.

[0054] Figure 13 This is a schematic diagram of the structure of the intermediate connecting rod provided in an embodiment of the present invention.

[0055] Figure 14 This is a schematic diagram of the structure of the fork-shaped long connecting plate provided in an embodiment of the present invention.

[0056] Figure 15 This is a schematic diagram of the fork-shaped short connecting plate structure provided in an embodiment of the present invention.

[0057] Figure 16 This is a schematic diagram of the support crank arm provided in an embodiment of the present invention.

[0058] Figure 17 This is a schematic diagram of the stepped shaft provided in an embodiment of the present invention.

[0059] Figure 18 This is a schematic diagram of the support structure provided in an embodiment of the present invention.

[0060] Figure 19 This is a schematic diagram of the linkage crank arm provided in an embodiment of the present invention.

[0061] Figure 20 This is a schematic diagram of the slotted connecting rod provided in an embodiment of the present invention.

[0062] Figure 21 This is a schematic diagram of the structure of a first-stage lever provided in an embodiment of the present invention.

[0063] In the diagram: 1. First bolt; 2. Opening electromagnet; 3. Lever; 4. First bearing; 5. Screw; 6. First-stage stop; 7. First shaft pin; 8. Roller bearing; 9. Fork-shaped rotary stop; 10. First stepped shaft; 11. Second bearing; 12. Cam; 13. Camshaft; 14. Output crank arm; 15. Output shaft; 16. Transmission roller; 17. Second shaft pin; 18. Fork-shaped long connecting plate; 19. Intermediate connecting rod; 20. Intermediate shaft pin; 21. Third shaft pin; 22. Fork-shaped short... 23. Connecting plate; 24. Slotted connecting rod; 25. Fourth shaft pin; 26. Linkage crank arm; 27. First shaft; 28. Fifth shaft pin; 29. ​​Sixth shaft pin; 30. Tension spring; 31. Second bolt; 32. Fixing bolt; 33. Support; 34. Limiting shaft; 35. Third bearing; 36. Second shaft; 37. Support crank arm; 38. Seventh shaft pin; 39. Third bolt; 40. Torsion spring shaft; 41. Torsion spring; 42. Wall panel; 43. Second stepped shaft; 44. Oil-free bearing. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0065] To address the problems existing in the prior art, the present invention provides a linkage-type anti-leakage stop and method for a spring-operated mechanism. The present invention will be described in detail below with reference to the accompanying drawings.

[0066] like Figure 1 As shown, the linkage-type anti-leakage stopper for the spring operating mechanism provided in this embodiment of the invention uses the wall plate 42 as the base. The opening electromagnet 2 is installed on the wall plate 42 with the first bolt 1. The lever 3 is embedded in the first-stage stopper 6, with equal lengths protruding at both ends. The torsion spring 41 is fitted onto the torsion spring shaft 40. One end of the torsion spring 41 rests on the first-stage stopper, and the other end rests on the third bolt 39. The first bearing 4 is embedded in the first-stage stopper 6. The screw shaft 5 is screwed onto the wall plate 42, and then the first-stage stopper 6 is installed on the screw shaft 5. See AA sectional view.

[0067] Mount cam 12 onto camshaft 13, and then mount them onto wall plate 42. Mount transmission roller 16 onto output crank arm 14 using second shaft pin 17, then mount output crank arm 14 onto output shaft 15, and then mount them onto wall plate 42, see DD sectional view.

[0068] Embed the fork-shaped rotating chuck 9 into the second bearing 11, then install the first stepped shaft 10 and the second stepped shaft 43 onto the second bearing 11 respectively, then install the second stepped shaft 43 onto the wall panel 42, and install the first stepped shaft 10 onto the support 32, see BB sectional view.

[0069] Place the roller bearings 8 into the intermediate connecting rod 19, then place them into the groove of the fork-shaped rotating chuck 9, and hinge them together with the first shaft pin 7, see the upper part of the CC sectional view.

[0070] One end of the fork-shaped long connecting plate 18 is inserted into the output crank arm 15, and the hole at the other end is aligned with the middle hole of the intermediate connecting rod 19 and the fork hole of the fork-shaped short connecting plate. They are hinged together with the intermediate shaft pin 20, as shown in the middle of the CC sectional view.

[0071] The lower end of the intermediate connecting rod 19 is hinged to the elongated end of the slotted connecting rod 23 using the third axle pin 21, as shown in the lower part of the CC sectional view. The other end of the fork-shaped short connecting rod 22 is hinged to the support crank arm 37 using the fifth axle pin 27. The other end of the slotted connecting rod 23 is hinged to the linkage crank arm 25 and the tension spring 29 using the fourth axle pin 24. The second bolt 30 is screwed onto the wall panel 42, and the other end of the tension spring is then hung on the second bolt 30. The third bearing 35 is fitted inside the support crank arm 37, the second shaft 36 is mounted on the wall panel 42, and the support crank arm 37 is then mounted on the second shaft 36, as shown in the EE sectional view.

[0072] Mount the linkage crank arm 25 onto the first shaft 26, mount the oilless bearing 44 onto the first shaft 26, and then mount them onto the wall panel 42 (see FF sectional view). Hinge the connecting rod 33 to the linkage crank arm 25 and the support crank arm 37 using the sixth shaft pin 28 and the seventh shaft pin 38, respectively. Install the limiting shaft 34 onto the wall panel 42. Finally, align and install the four holes of the support 32 with the first stepped shaft 10, the first shaft 26, the limiting shaft 34, and the second shaft 36, respectively, and tighten them with bolts 31. At this point, the linkage-type anti-leakage latch structure is assembled.

[0073] The working method of the spring-operated mechanism with a linkage-type leak-proof locking stop provided by the present invention includes:

[0074] Closing process: see Figure 4 This is the initial position for the closing action. When the closing spring force F of the spring mechanism drives the cam 12 to rotate clockwise, the cam 12 pushes the transmission roller 16, causing the output crank arm 14 to rotate counterclockwise. See below. Figure 5 During the closing process, the forked long connecting rod 18, the forked short connecting rod 22, and the intermediate connecting rod 19 move together to the right, see... Figure 5 Just before the closing position is reached, the intermediate connecting rod 19, via the slotted connecting rod 23, pulls the linkage crank arm 25. The linkage crank arm 25, via the connecting rod 33, pulls the support crank arm 37 past the dead point. The limit shaft 34 then restricts the support crank arm 37 to a position just past the dead point. At this point, the support crank arm 37, the fork-shaped short connecting plate 22, the fork-shaped long connecting plate 18, the intermediate connecting rod 19, the fork-shaped rotating stop 9, and the first-stage stop 6 locking the fork-shaped rotating stop 9 together support the output crank arm 14 at the closing position. Figure 6 At this point, the closing operation is complete.

[0075] Opening process: When the opening electromagnet 2 is energized, it triggers the lever 3, causing the primary stop 6 to rotate counterclockwise, thus releasing the primary stop 6 from locking the fork-shaped rotary stop 9. At this time, the pushing force from the opening spring on the output crank arm 14 causes it to rotate clockwise, and the fork-shaped long connecting plate 18, fork-shaped short connecting plate 22, intermediate connecting rod 19, and fork-shaped rotary stop 9 are pressed... Figure 7 The circuit breaker moves in the direction shown and is in the tripped position as indicated. Figure 8As shown. After the circuit breaker is fully open, the linkage crank arm 25 rotates clockwise under the tension of the tension spring 29, thereby driving the fork-shaped short connecting plate 22, the fork-shaped long connecting plate 18, the intermediate connecting rod 19, the fork-shaped rotating stop 9, the connecting rod 33, and the linkage crank arm 25 to... Figure 9 The indicated direction of the movement resets each component to the ready-to-close position. Under the action of the torsion spring 41, the first-stage stop 6 rotates clockwise to reset and relocks the fork-shaped rotating stop 9, waiting for the next closing operation.

[0076] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0077] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention, and within the spirit and principles of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A linkage-type leak-proof locking mechanism for a spring-operated mechanism, characterized in that, The linkage-type leak-proof locking mechanism used in the spring operating mechanism includes: A closing power mechanism used to drive the transmission roller to rotate the output crank arm counterclockwise; The closing support mechanism is used to support the output crank arm in the closing position; The tripping mechanism is used to release the lock of the primary stop on the fork-shaped rotary stop. A reset power mechanism used to drive the fork-shaped short connecting plate, fork-shaped long connecting plate, intermediate connecting rod, fork-shaped rotating stop, connecting rod and linkage crank arm to reset each component to the ready closing position. A limiting mechanism used to restrict the support crank arm to a position just past the dead point; The intermediate connecting rod is connected to one end of the fork-shaped long connecting plate and one end of the fork-shaped short connecting plate via an intermediate shaft pin. The other end of the fork-shaped short connecting rod is hinged to one end of the support crank arm via a fifth shaft pin. The other end of the fork-shaped long connecting plate is embedded in the output crank arm. The two ends of the connecting rod are connected to one end of the linkage crank arm and the support crank arm. The other end of the linkage crank arm is connected to one end of the slotted connecting rod and the tension spring. The lower end of the intermediate connecting rod is set in the long hole of the slotted connecting rod. The other end of the tension spring is fixedly connected to the wall plate. The fork-shaped rotating chuck is fixed to the support and the wall plate via the first stepped shaft on the second bearing. The fork-shaped rotating chuck is connected to the intermediate connecting rod via the first shaft pin. The other end of the support crank arm is fixed to the support and the wall plate via the second shaft. The linkage crank arm is fixed to the wall plate and the support via the first shaft.

2. The linkage-type latch for a spring trip mechanism according to claim 1, characterized in that, The closing power mechanism has a camshaft fixed to the wall panel, and a cam is mounted on the camshaft; An output shaft is fixed to the wall panel, an output crank arm is fixed to the output shaft, and a transmission roller is fixed to the output crank arm through a second shaft pin.

3. The linkage-type leak-proof locking mechanism for the spring-operated mechanism as described in claim 1, characterized in that, The closing support mechanism has a first bearing embedded in the first-stage stop, and the screw is screwed onto the wall plate. The first-stage stop is mounted on the screw. The first-stage stop is connected to the intermediate connecting rod and the fork-shaped rotating stop respectively through the bearing and the pin. The linkage crank arm is hinged to the connecting rod via the sixth axle pin, and the connecting rod is hinged to the support crank arm via the seventh axle pin; the support crank arm is fitted with a bearing, the second axle is mounted on the wall panel, and the support crank arm is mounted on the second axle; The intermediate connecting rod is connected to the fork-shaped long connecting plate and the fork-shaped short connecting plate respectively through the intermediate shaft pin, and the fork-shaped short connecting rod is hinged to the support crank arm through the fifth shaft pin; One end of the fork-shaped long connecting plate is embedded in the output crank arm, and the hole at the other end is aligned with the middle hole of the intermediate connecting rod and the fork hole of the fork-shaped short connecting plate, and is hinged with an intermediate shaft pin.

4. The linkage-type leak-proof locking mechanism for the spring-operated mechanism as described in claim 3, characterized in that, The linkage crank arm is mounted on the first shaft, the first shaft is fitted with an oil-free bearing, and the linkage crank arm is fixed to the wall panel.

5. The linkage-type leak-proof locking mechanism for the spring-operated mechanism as described in claim 3, characterized in that, The fork-shaped rotating lever is embedded in the second bearing. The first stepped shaft and the second stepped shaft are respectively mounted on the second bearing. The second stepped shaft is mounted on the wall panel, and the first stepped shaft is mounted on the support. The four holes of the support are aligned with the first stepped shaft, the first shaft, the limit shaft, and the second shaft respectively, and then installed and tightened with bolts.

6. The linkage-type leak-proof locking mechanism for the spring-operated mechanism as described in claim 3, characterized in that, The The intermediate connecting rod is placed in a groove with a roller bearing and then into the groove of the fork-shaped rotating stop. The intermediate connecting rod and the fork-shaped rotating stop are hinged together by the first shaft pin.

7. The linkage-type leak-proof locking mechanism for the spring-operated mechanism as described in claim 1, characterized in that, In the circuit breaker positioning mechanism, the wall panel is fixed with a circuit breaker electromagnet by bolts, and the circuit breaker electromagnet is connected to the lever. The lever is embedded in the first-stage tug, one end of which is connected to one end of a torsion spring. The torsion spring is fitted onto the torsion spring shaft, and the other end of the torsion spring is attached to the third bolt. The lever is embedded in the first-stage throttle, with equal lengths protruding from both ends.

8. The linkage-type leak-proof locking mechanism for the spring-operated mechanism as described in claim 1, characterized in that, In the reset power mechanism, the lower end of the middle connecting rod is hinged to the long hole end of the slotted connecting rod by a third shaft pin, and the other end of the slotted connecting rod is hinged to the linkage crank arm and the tension spring by a fourth shaft pin; the other end of the tension spring is hung on the second bolt, and the second bolt is screwed onto the wall panel.

9. The linkage-type leak-proof locking mechanism for the spring-operated mechanism as described in claim 1, characterized in that, The limiting mechanism has a limiting shaft fixed on the wall plate.

10. A method for preventing leakage of a spring-operated mechanism using a linkage-type leak-proof locking mechanism that implements the spring-operated mechanism as described in any one of claims 1-9, characterized in that, The method for preventing leakage using the linkage-type anti-leakage stopper in the spring-operated mechanism includes: Closing process: When the spring force F of the closing mechanism drives the cam to rotate clockwise, the cam pushes the transmission roller to drive the output crank arm to rotate counterclockwise; during the closing process, the fork-shaped long connecting rod, the fork-shaped short connecting rod, and the middle connecting rod move to the right together; Just before the closing position is reached, the intermediate connecting rod pulls the linkage crank arm via the slotted connecting rod. The linkage crank arm then pulls the support crank arm through the dead point via the connecting rod, and the limit shaft restricts the support crank arm to the position just after passing the dead point. At this point, the output crank arm is supported in the closing position by the support crank arm, the fork-shaped short connecting plate, the fork-shaped long connecting plate, the intermediate connecting rod, the fork-shaped rotating stop, and the first-stage stop of the locking fork-shaped rotating stop. Thus, the closing action is completed. Opening process: When the opening electromagnet is energized, the electromagnet touches the lever and drives the first-stage stop to rotate counterclockwise, thereby unlocking the first-stage stop from locking the fork-shaped rotary stop. At this time, the pushing force from the opening spring on the output crank arm makes it rotate clockwise, and the fork-shaped long connecting plate, fork-shaped short connecting plate, intermediate connecting rod and fork-shaped rotary stop move towards the opening position. After the circuit breaker is in the open position, the linkage crank arm rotates clockwise under the tension of the tension spring, thereby driving the fork-shaped short connecting plate, fork-shaped long connecting plate, intermediate connecting rod, fork-shaped rotating stop, connecting rod and linkage crank arm to move towards the reset direction of the ready closing position, so that each component is reset to the ready closing position. Under the action of the torsion spring, the first-stage stop rotates clockwise to reset, and relocks the fork-shaped rotating stop to wait for the next closing.

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