A manual operating device for a metal-enclosed high-voltage switchgear

Abstract

A manual operating device for a metal-enclosed high-voltage switchgear, belonging to the technical field of the operation of metal-enclosed high-voltage switchgear, is composed of 1 new energy storage handle, 6 retaining blocks, 3 pin shafts, 3 connecting blocks, 3 sets of lock nuts including flat washers and spring washers, 1 pull rod, 1 new closing and opening handle, 3 sets of adjusting nuts including flat washers and spring washers, 3 sets of limit nuts including 1 flat washer per piece, 3 compression springs, 1 fixing plate and 3 pull rings, and is adjusted and assembled in cooperation with the original energy storage shaft, the original closing and opening shaft and the second-layer door; the present invention can perform closing, opening and energy storage manual operations on the circuit breaker inside the metal-enclosed high-voltage switchgear when the system is energized and operating, and can also perform closing, opening and energy storage manual operations on the circuit breaker inside the metal-enclosed high-voltage switchgear when the system is de-energized and operating, fundamentally optimizing the traditional operation method, being simple and convenient to operate. The workload is reduced, the working time is saved, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of the operation of metal-enclosed high-voltage switchgear, and particularly relates to a manual operation device for a metal-enclosed high-voltage switchgear. Background Art

[0002] At present, in the market, the circuit breaker inside the metal-enclosed high-voltage switchgear cannot be manually operated during the live operation of the system. For example, for the ZW32 switch, in the case of the failure of the electric operation mode, it is impossible to perform the opening, closing and energy storage operations on the circuit breaker inside the local metal-enclosed high-voltage switchgear. This is a very big functional defect, and many users require to add this function, that is, the opening, closing and energy storage manual operations can be performed on the circuit breaker inside the local metal-enclosed high-voltage switchgear under the condition that the system is live. Summary of the Invention

[0003] In order to solve the above existing problems, a manual operation device for a metal-enclosed high-voltage switchgear has been developed, which can perform the opening, closing and energy storage manual operations on the circuit breaker inside it under the condition of live operation of the system. The present invention provides: a manual operation device for a metal-enclosed high-voltage switchgear, comprising

[0004] The beneficial effects of the present invention are as follows: The present invention can perform the opening, closing and energy storage manual operations on the internal circuit breaker of the metal-enclosed high-voltage switchgear under the condition of live operation of the system, and can also perform the opening, closing and energy storage manual operations on the internal circuit breaker of the metal-enclosed high-voltage switchgear under the condition of non-live operation of the system. This invention can fully meet the manual operation requirements of users.

[0005] 1. For the original manual opening, closing and energy storage operations on the internal circuit breaker of the metal-enclosed high-voltage switchgear, it is necessary to first cut off the power supply of the system, then open the outer door of the metal-enclosed high-voltage switchgear, and then unlock the system interlock. After unlocking, open the second-layer door, and finally the opening, closing and energy storage manual operations can be performed on the circuit breaker of this device. Moreover, the operation space is very narrow and inconvenient for operation. However, for the manual operation device for a metal-enclosed high-voltage switchgear described in the present invention, the traditional operation mode is fundamentally optimized, and the operation is very simple and convenient. The workload is reduced, the working time is saved, and the working efficiency is greatly improved.

[0006] 2. The method of manually operating the circuit breaker inside the original metal-enclosed high-voltage switchgear for closing, opening, and energy storage is very unsafe. First, the operating space is narrow, making it easy to cause personal injury accidents. Second, after the system has just been powered off, there is still residual voltage on the high-voltage primary live parts inside the said device. The manual operating device of the metal-enclosed high-voltage switchgear described in the present invention has the operating point set on the second-layer door of the metal-enclosed high-voltage switchgear, which is very safe from the perspective of personal safety of the user. There is no need to unlock and then open the second-layer door for operation. After the outer door is opened, the closing, opening, and energy storage operations of the said device can be directly carried out. This design and research and development are both safe and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 Schematic structural diagram of the manual operating method of the circuit breaker of the present invention;

[0008] Figure 2 Schematic structural diagram of the pin shaft of the present invention;

[0009] Figure 3 Schematic structural diagram of the new energy storage handle of the present invention;

[0010] Figure 4 Schematic structural diagram of the pull ring part of the present invention;

[0011] Figure 5 Schematic structural diagram of the opening rod and closing rod of the present invention;

[0012] Figure 6 Schematic structural diagram of the energy storage rod of the present invention;

[0013] Figure 7 Schematic structural diagram of the new opening and closing handles of the present invention;

[0014] Figure 8 Schematic structural diagram of the connecting block of the present invention;

[0015] Figure 9 Schematic structural diagram of the sleeve of the present invention;

[0016] Figure 10 Schematic structural diagram of the bent plate of the present invention;

[0017] Figure 11 Schematic structural diagram of the fixed welding of the fixed plate bent plate and the sleeve of the present invention;

[0018] Figure 12 Schematic structural diagram of the installation method of the new operating handle of the present invention;

[0019] Figure 13 Schematic left view structural diagram of the new manual operating device of the present invention;

[0020] Figure 14 Schematic diagram of the new manual operating device of the present invention;

[0021] Figure 15 Schematic structural diagram of the front view of the manual device for the second-layer door of the present invention;

[0022] Figure 16 Schematic structural diagram of the front view of the appearance of the metal-enclosed high-voltage switchgear of the present invention;

[0023] Figure 17 Schematic structural diagram of the original manual operation mode of the circuit breaker of the present invention;

[0024] Figure 18 For the present invention Figure 14 Enlarged view of area A.

[0025] Among them, the reference numerals are: 1. New energy storage handle, 11. Energy storage pin shaft, 12. Energy storage connection block, 13. Energy storage pull rod, 14. Energy storage compression spring, 15. Energy storage pull rod seat, 16. Energy storage pull ring, 17. Energy storage limit nut, 18. Energy storage stop card, 19. Energy storage lock nut, 20. Energy storage adjustment nut, 2. New circuit breaker handle, 21. Circuit breaker pin shaft, 22. Circuit breaker connection block, 23. Circuit breaker pull rod, 24. Circuit breaker compression spring, 25. Circuit breaker pull rod seat, 26. Circuit breaker pull ring, 27. Circuit breaker limit nut, 28. Circuit breaker stop card, 29. Circuit breaker lock nut, 30. Circuit breaker adjustment nut, 3. New closing handle, 31. Closing pin shaft, 32. Closing connection block, 33. Closing pull rod, 34. Closing compression spring, 35. Closing pull rod seat, 36. Closing pull ring, 37. Closing limit nut, 38. Closing stop card, 39. Closing lock nut, 40. Closing adjustment nut, 4. Second-layer door, 5. Bent plate, 51. Energy storage sleeve hole, 52. Circuit breaker sleeve hole, 53. Closing sleeve hole, 6. Original circuit breaker shaft, 7. Original energy storage shaft. Detailed implementation manner

[0026] A manual operation device for a metal-enclosed high-voltage switchgear, as Figure 1 and Figure 18 shown, includes an energy storage device, a circuit breaker device, a closing device, a second-layer door 4, a bent plate 5, an energy storage pull ring 16, a circuit breaker pull ring 26, and a closing pull ring 36. The circuit breaker device and the closing device are connected to the original circuit breaker shaft 6 through a fixed shaft, the energy storage device is connected to the original energy storage shaft 7, the bent plate 5 is fixed on the second-layer door 4, and an energy storage sleeve hole 51, a circuit breaker sleeve hole 52, and a closing sleeve hole 53 are respectively arranged on the bent plate 5. After the energy storage device, the circuit breaker device, and the closing device respectively pass through the energy storage sleeve hole 51, the circuit breaker sleeve hole 52, and the closing sleeve hole 53, they are respectively connected to the energy storage pull ring 16, the circuit breaker pull ring 26, and the closing pull ring 36.

[0027] Among them, the energy storage device includes a new energy storage handle 1, an energy storage pin shaft 11, an energy storage connection block 12, an energy storage pull rod 13, and an energy storage compression spring 14. The new energy storage handle 1 is hinged to the energy storage connection block 12 through the energy storage pin shaft 11. One end of the energy storage connection block 12 is threadedly connected to one end of the energy storage pull rod 13. An energy storage limit nut 17 is arranged on the energy storage pull rod 13. The energy storage compression spring 14 is sleeved on the energy storage pull rod 13. One end of the energy storage compression spring 14 is connected to the energy storage limit nut 17, and the other end of the energy storage compression spring 14 is connected to the bent plate 5. The other end of the energy storage pull rod 13 is threadedly connected to the energy storage pull ring seat 15. A round hole is arranged on the energy storage pull ring seat 15, and the energy storage pull ring 16 passes through the round hole.

[0028] Among them, the opening device includes a new opening handle 2, an opening pin shaft 21, an opening connection block 22, an opening pull rod 23, and an opening compression spring 24. The new opening handle 2 is hinged to the opening connection block 22 through the opening pin shaft 21. One end of the opening connection block 22 is threadedly connected to one end of the opening pull rod 23. An opening limit nut 27 is arranged on the opening pull rod 23. The opening compression spring 24 is sleeved on the opening pull rod 23. One end of the opening compression spring 24 is connected to the opening limit nut 27, and the other end of the opening compression spring 24 is connected to the bent plate 5. The other end of the opening pull rod 23 is threadedly connected to the opening pull ring seat 25. A round hole is arranged on the opening pull ring seat 25, and the opening pull ring 26 passes through the round hole.

[0029] Among them, the closing device includes a new closing handle 3, a closing pin shaft 31, a closing connection block 32, a closing pull rod 33, and a closing compression spring 34. The new closing handle 3 is hinged to the closing connection block 32 through the closing pin shaft 31. One end of the closing connection block 32 is threadedly connected to one end of the closing pull rod 33. A closing limit nut 37 is arranged on the closing pull rod 33. The closing compression spring 34 is sleeved on the closing pull rod 33. One end of the closing compression spring 34 is connected to the closing limit nut 37, and the other end of the closing compression spring 34 is connected to the bent plate 5. The other end of the closing pull rod 33 is threadedly connected to the closing pull ring seat 35. A round hole is arranged on the closing pull ring seat 35, and the closing pull ring 36 passes through the round hole.

[0030] Among them, 2 energy storage retaining cards 18 are respectively arranged on the energy storage pin shaft 11, and an energy storage locking nut 19 is arranged at the threaded connection part between the energy storage connection block 12 and the energy storage pull rod 13.

[0031] Among them, 2 opening retaining cards 28 are respectively arranged on the opening pin shaft 21, and an opening locking nut 29 is arranged at the threaded connection part between the opening connection block 22 and the opening pull rod 23.

[0032] Among them, 2 closing retaining cards 38 are respectively arranged on the closing pin shaft 31, and a closing locking nut 39 is arranged at the threaded connection part between the closing connection block 32 and the closing pull rod 33.

[0033] The functions of the energy storage locking nut 19, the opening locking nut 29, and the closing locking nut 39 are to fasten the threaded connection; the functions of the energy storage stop 18, the opening stop 28, and the closing stop 38 are to fasten the connection between the pin shaft and the handle fork.

[0034] Among them, 1 energy storage adjustment nut 20 is provided on the energy storage pull rod 13. One end of the energy storage adjustment nut 20 is connected to the energy storage limit nut 17, and the other end of the energy storage adjustment nut 20 is connected to the energy storage compression spring 14.

[0035] Among them, 1 opening adjustment nut 30 is provided on the opening pull rod 23. One end of the opening adjustment nut 30 is connected to the opening limit nut 27, and the other end of the opening adjustment nut 30 is connected to the opening compression spring 24.

[0036] Among them, 1 closing adjustment nut 40 is provided on the closing pull rod 33. One end of the closing adjustment nut 40 is connected to the closing limit nut 37, and the other end of the closing adjustment nut 40 is connected to the closing compression spring 34.

[0037] The functions of the energy storage adjustment nut 20, the opening adjustment nut 30, and the closing adjustment nut 40 are to adjust the energy storage compression spring 14, the opening compression spring 24, and the closing compression spring 34.

[0038] As Figure 17 shown, in the original manual operation mode of the circuit breaker, after the energy storage handle is pressed and rotated counterclockwise by a certain angle along the A direction and then released, the energy storage handle will automatically return to its original position. Repeat this continuous operation multiple times until the energy is fully stored; after the opening end of the opening and closing handle is pressed and rotated counterclockwise along the B direction to open and then released, the opening end of the opening and closing handle will automatically return to its original position as shown in the figure; after the closing end of the opening and closing handle is pressed and rotated clockwise along the C direction to close and then released, the closing end of the opening and closing handle will automatically return to its original position as shown in the figure;

[0039] As Figure 2 shown, the pin shaft is used for the Φ8 hole fitting assembly of the new energy storage handle ( Figure 3 ) and the connecting block Figure 6 , and is also used for the Φ8 hole fitting assembly of the new opening and closing handle ( Figure 7 ) and the connecting block Figure 6 . Grooves are designed at both ends of the pin shaft for installing stops to limit the transmission of the assembled parts;

[0040] As Figure 3 shown, in the design of the new energy storage handle, the left fixed hole is fixed on the circuit breaker housing, and the right fork is used in conjunction with the Φ8 hole of the Figure 2 pin shaft and the Figure 8 connecting block;

[0041] As Figure 4As shown, the pull ring part is composed of two parts, one part is the pull ring seat, and the other part is the pull ring. An M6 hole is opened at one end of the pull ring seat to connect Figure 5 The B end of the tie rod and Figure 6 At the D end of the second pull rod, a round hole is opened at the other end to match the insertion and installation of the pull ring described in the figure. Note that the pull ring needs to be inserted and then welded, ground and polished;

[0042] like Figure 5 The pull rod shown is used for the auxiliary device of the opening and closing handle. Both ends are processed into M6 threads. The thread at the A end is matched with Figure 8 Connecting block, threaded fitting at end B Figure 4 M6 thread on the pull ring part;

[0043] like Figure 6 The pull rod shown is used for the energy storage handle matching device, and both ends are processed into M6 threads, and the C end thread is matched Figure 8 Connecting block, D-end thread fit Figure 4 M6 thread on the pull ring part;

[0044] like Figure 7 As shown, the new opening and closing handle has two functions, one is the opening function, the other is the closing function. Its two ends are designed in the form of forks, which are intended to be connected with the Φ8 pin shaft. Figure 8 The new opening and closing handle is designed to be assembled with the connecting block. The long strip hole in the middle of the new opening and closing handle is designed on the basis of not changing the original circuit breaker housing. The height H of the new opening and closing handle is designed to be pulled apart from the Figure 3 The parallel distance of the energy storage handles is intended to prevent the hand-operated pull rings of the second-floor doors from interfering with each other;

[0045] like Figure 8 As shown, the connecting block acts as a bridge, the threaded end connects the A end of the pull rod 1 and the D end of the pull rod 2, and the round hole end is inserted into Figure 2 Pin assembly on Figure 3 The new energy storage handle has a fork in the middle or Figure 7 The middle of the fork of the new opening and closing handle;

[0046] like Figure 9 As shown, the sleeve is welded to Figure 10 The sleeve hole shown on the bent plate is inserted into the tie rod 1 and tie rod 2 during assembly. Its functions are to play a lubricating role to save operating force and to protect and reduce the wear on the surface of tie rod 1 and tie rod 2.

[0047] like Figure 10 As shown, the design of the bent plate has three sleeve holes, which are connected to Figure 9 After assembly, welding is required. For welding direction, see Figure 11 Fixed plate;

[0048] like Figure 11As shown, the fixed plate is used to fix the pulling directions of the two kinds of pull rods. It is formed by bending a steel plate with a thickness of 4 mm Figure 10 and then welding it with Figure 9 a sleeve. Then, both ends of the fixed plate are welded inside the box cavity of the inner layer of the two-layer door frame. For the welding position and direction, see Figure 14 the new manual operating device;

[0049] As Figure 12 shown, the installation method of the new operating handle is the modified assembly method, including Figure 3 a new energy storage handle and Figure 7 a new closing and opening handle. The installation of the new energy storage handle is in the vertical direction, and the installation hole is at the lower part in the figure. The installation of the new closing and opening handle is also in the vertical direction, with the closing end at the upper part and the opening end at the lower part;

[0050] As Figure 13 shown, the left view of the new manual operating device is relative to Figure 14 the front view of the new manual operating method. For the operating directions of the new energy storage handle and the new closing and opening handle relative to their respective fixed axes, the moving direction of the new energy storage handle is counterclockwise, the moving direction of the opening handle is counterclockwise, and the moving direction of the closing handle is clockwise. Their moving directions are Figure 17 the same as those of the original circuit breaker operating method. That is to say, the operating results of the new manual operating method and the original circuit breaker manual operating method are the same, so the realization of their respective functions is guaranteed;

[0051] As Figure 14 shown, as can be seen from the top view of the new manual operating device, the closing and opening pull ring and the energy storage pull ring are installed between the outer layer and the two-layer door, and the fixed plate is welded to the inner side of the two-layer door. For other description contents, see Figure 1 the enlarged view of area a of the new manual operating device;

[0052] As Figure 1 shown, the enlarged view of area a of the new manual operating device is derived from Figure 14 the enlarged view of the new manual operating device. The new manual operating device is composed of 1 new energy storage handle, 6 retaining blocks, 3 pin shafts, 3 connecting blocks, 3 sets of lock nuts including flat washers and spring washers, 1 pull rod two, 1 new closing and opening handle, 2 pull rods one, 3 sets of adjusting nuts including flat washers and spring washers, 3 sets of limit nuts including 1 flat washer per piece, 3 compression springs, 1 fixed plate and 3 pull ring parts, and is adjusted and assembled in cooperation with the original energy storage shaft, the original closing and opening shaft and the two-layer door;

[0053] As Figure 15 shown, the front view of the two-layer door manual device shows the position of the pull ring at the new manual operating point;

[0054] AsFigure 16 As shown, it can be seen from the front view of the appearance of the metal-enclosed high-voltage switchgear that the new manual operating device developed by the present invention has no impact on the appearance of the original metal-enclosed high-voltage switchgear.

[0055] Assembly instructions:

[0056] When assembling the Figure 14 new manual operating device, as Figure 13 shown, attention should be paid to adjusting the lengths of the 3 compression springs to adapt to the automatic recovery force and stretching length of the 3 pull rods. After adjustment, tighten the limit nuts as shown in the enlarged view of area a of the new manual operating device, and other assembly methods refer to Figure 1 the enlarged view of area a of the new manual operating device. Figure 1 the enlarged view of area a of the new manual operating device.

[0057] Operating principle:

[0058] Energy storage operation. When manual energy storage is required, first unlock the special lock of the outer door in the front view of the appearance of the metal-enclosed high-voltage switchgear, then open the outer door of the device, and then pull the energy storage pull ring in the direction of the arrow Figure 16 as shown. When it can no longer be pulled, release it. After resetting, pull it again and repeat the operation multiple times until a click sound is heard indicating that the energy is full, and the energy storage is completed; Figure 13 as shown. When it can no longer be pulled, release it. After resetting, pull it again and repeat the operation multiple times until a click sound is heard indicating that the energy is full, and the energy storage is completed;

[0059] Opening operation. When manual opening is required, first unlock the special lock of the outer door in the front view of the appearance of the metal-enclosed high-voltage switchgear, then open the outer door of the device, and then pull the opening pull ring in the direction of the arrow Figure 16 as shown. Release it after feeling or hearing the opening sound, and the opening is completed; Figure 13 as shown. Release it after feeling or hearing the opening sound, and the opening is completed;

[0060] Closing operation. When manual closing is required, first unlock the special lock of the outer door in the front view of the appearance of the metal-enclosed high-voltage switchgear, then open the outer door of the device, and then pull the closing pull ring in the direction of the arrow Figure 16 as shown. Release it after feeling or hearing the closing sound, and the closing is completed. Figure 13 as shown. Release it after feeling or hearing the closing sound, and the closing is completed.

[0061] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A manual operating device for a metal-enclosed high-voltage switchgear, characterized in that, It includes an energy storage device, a tripping device, a closing device, a second-layer door (4), a bent plate (5), an energy storage pull ring (16), a tripping pull ring (26), and a closing pull ring (36). The tripping device and the closing device are respectively connected to the original opening and closing shaft (6) through fixed shafts, and the energy storage device is connected to the original energy storage shaft (7). The bent plate (5) is fixed on the second-layer door (4), and an energy storage sleeve hole (51), a tripping sleeve hole (52), and a closing sleeve hole (53) are respectively arranged on the bent plate (5). After passing through the energy storage sleeve hole (51), the energy storage device is connected to the energy storage pull ring (16). After passing through the tripping sleeve hole (52), the tripping device is connected to the tripping pull ring (26). After passing through the closing sleeve hole (53), the closing device is connected to the closing pull ring (36). The energy storage device includes a new energy storage handle (1), an energy storage pin shaft (11), an energy storage connecting block (12), an energy storage pull rod (13), and an energy storage compression spring (14). The new energy storage handle (1) is hinged to the energy storage connecting block (12) through the energy storage pin shaft (11). The energy storage connecting block (12) is threadedly connected to one end of the energy storage pull rod (13). An energy storage limit nut (17) is arranged on the energy storage pull rod (13). The energy storage compression spring (14) is passed through by the energy storage pull rod (13). One end of the energy storage compression spring (14) is connected to the energy storage limit nut (17), and the other end of the energy storage compression spring (14) is connected to the bent plate (5). The other end of the energy storage pull rod (13) is threadedly connected to the energy storage pull ring seat (15). A round hole is arranged on the energy storage pull ring seat (15), and the energy storage pull ring (16) passes through the round hole on the energy storage pull ring seat (15).

2. The manual operating device of the metal-enclosed high-voltage switchgear according to claim 1, characterized in that, The tripping device includes a new tripping handle (2), a tripping pin shaft (21), a tripping connecting block (22), a tripping pull rod (23), and a tripping compression spring (24). The new tripping handle (2) is hinged to the tripping connecting block (22) through the tripping pin shaft (21). The tripping connecting block (22) is threadedly connected to one end of the tripping pull rod (23). A tripping limit nut (27) is arranged on the tripping pull rod (23). The tripping compression spring (24) is passed through by the tripping pull rod (23). One end of the tripping compression spring (24) is connected to the tripping limit nut (27), and the other end of the tripping compression spring (24) is connected to the bent plate (5). The other end of the tripping pull rod (23) is threadedly connected to the tripping pull ring seat (25). A round hole is arranged on the tripping pull ring seat (25), and the tripping pull ring (26) passes through the round hole on the tripping pull ring seat (25).

3. The manual operating device of the metal-enclosed high-voltage switchgear according to claim 1, characterized in that, The closing device includes a new - type closing handle (3), a closing pin shaft (31), a closing connection block (32), a closing pull rod (33), a closing compression spring (34). The new - type closing handle (3) is hinged to the closing connection block (32) through the closing pin shaft (31). The closing connection block (32) is thread - connected to one end of the closing pull rod (33). A closing limit nut (37) is arranged on the closing pull rod (33). The closing compression spring (34) is penetrated by the closing pull rod (33). One end of the closing compression spring (34) is connected to the closing limit nut (37), and the other end of the closing compression spring (34) is connected to the bent plate (5). The other end of the closing pull rod (33) is thread - connected to the closing pull - ring seat (35). A round hole is arranged on the closing pull - ring seat (35), and the closing pull ring (36) passes through the round hole on the closing pull - ring seat (35).

4. The manual operating device of the metal-enclosed high-voltage switchgear according to claim 1, characterized in that, Two energy - storage retaining clips (18) are respectively arranged on the energy - storage pin shaft (11). A energy - storage locking nut (19) is arranged at the thread - connection part between the energy - storage connection block (12) and the energy - storage pull rod (13).

5. The manual operating device of the metal-enclosed high-voltage switchgear according to claim 2, characterized in that, Two opening - brake retaining clips (28) are respectively arranged on the opening - brake pin shaft (21). An opening - brake locking nut (29) is arranged at the thread - connection part between the opening - brake connection block (22) and the opening - brake pull rod (23).

6. The manual operating device of the metal-enclosed high-voltage switchgear according to claim 3, characterized in that, Two closing - brake retaining clips (38) are respectively arranged on the closing - brake pin shaft (31). A closing - brake locking nut (39) is arranged at the thread - connection part between the closing - brake connection block (32) and the closing - brake pull rod (33).

7. The manual operating device of the metal-enclosed high-voltage switchgear according to claim 1, characterized in that, An energy - storage adjusting nut (20) is arranged on the energy - storage pull rod (13). One end of the energy - storage adjusting nut (20) is connected to the energy - storage limit nut (17), and the other end of the energy - storage adjusting nut (20) is connected to the energy - storage compression spring (14).

8. The manual operating device of the metal-enclosed high-voltage switchgear according to claim 2, characterized in that, An opening - brake adjusting nut (30) is arranged on the opening - brake pull rod (23). One end of the opening - brake adjusting nut (30) is connected to the opening - brake limit nut (27), and the other end of the opening - brake adjusting nut (30) is connected to the opening - brake compression spring (24).

9. The manual operating device of the metal-enclosed high-voltage switchgear according to claim 3, characterized in that, A closing - brake adjusting nut (40) is arranged on the closing - brake pull rod (33). One end of the closing - brake adjusting nut (40) is connected to the closing - brake limit nut (37), and the other end of the closing - brake adjusting nut (40) is connected to the closing - brake compression spring (34).

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