A bypass load switch operating mechanism

Abstract

The utility model discloses a bypass load switch operating mechanism, including casing, drive mechanism, electric transmission mechanism, manual operation mechanism and locking mechanism, and electric transmission mechanism includes rotatable installation electric transmission main shaft in casing and sets up the cam of rotatable synchronism on the rear end of electric transmission main shaft, and manual operation mechanism includes rotatable installation manual operation main shaft in casing and sets up the U -shaped shift lever of rotatable synchronism on the rear end of manual operation main shaft, and the rear end of manual operation main shaft is connected with switch main shaft in air chamber through the dynamic seal on casing, and the front end is connected operation handle and is out of casing. The utility model only has load switch split and load switch closing, and the misoperation of live closing ground knife is prevented from happening, and the operator and equipment are protected from being damaged by mistake, and for spring energy storage mechanism, simple structure, compact layout, reliable performance, mechanism installation, replacement is easier, and the energy storage spring will not hurt people because of the misoperation in the operation, and the operation safety is higher.

Description

Technical Field

[0001] This utility model belongs to the technical field of load switch operating mechanisms, and particularly relates to a bypass load switch operating mechanism. Background Technology

[0002] 10kV power distribution lines are mainly used for the transmission of electricity for production and daily life of enterprises, institutions and urban residents. They have a wide coverage area, and their power supply reliability directly affects residents' clothing, food, housing and transportation. In some cases, it can even endanger their lives.

[0003] Currently, power outages mainly fall into two categories: 1) power outages due to equipment malfunctions not caused by human error; and 2) planned power outages caused by human intervention, such as equipment maintenance, upgrades, or capacity expansions. Regardless of the cause, rapid power restoration is of paramount importance, leading to the development of the uninterrupted power supply (UPS) concept. The core of UPS lies in using advanced technologies and management methods to complete equipment maintenance, upgrades, or capacity expansions without interrupting power supply to users, which has profound significance for energy security, economic efficiency, and sustainable development in modern society.

[0004] Uninterrupted power supply (UPS) is a revolutionary breakthrough in the field of power system operation and maintenance. Bypass operation is one of the implementation schemes for UPS. It uses temporary cables with quick plugs and bypass load switches to bridge the conductors in the work area and temporarily supply power to users in the work area. Then, the conductors in the work area are isolated, and the work area is de-energized, but the users are not de-energized, ensuring the reliability of power supply and quickly restoring power supply. After the work is completed, the original wiring state is restored. The bypass load switch is the main control equipment for connecting the temporary bypass circuit.

[0005] However, current load switch operating mechanisms all include energy storage devices. During operation, the energy must be fully stored before opening or closing operations can be performed, and this energy storage function is generally achieved through an energy storage spring. Its working principle mainly involves rotating the main shaft with the operating handle to store energy in the energy storage spring. Once the spring is fully stored, it releases energy instantaneously after rotating a small angle past the inflection point, quickly driving the main shaft to switch positions. This operating mechanism has the following drawbacks:

[0006] (1) Most of them adopt spring operating mechanism. The energy storage spring of the mechanism adopts compression spring, which has a large range of motion, non-compact structure and complex process.

[0007] (2) The entire mechanism is exposed without protection. If used in a humid environment for a long time, the mechanism is prone to rust and jamming.

[0008] (3) There is no switching or interlocking device between manual and electric operation. In highly integrated engineering maintenance vehicles or narrow work spaces, it is easy to accidentally operate the equipment, endangering the personal safety of the operators. Utility Model Content

[0009] The purpose of this utility model is to provide a bypass load switch operating mechanism that is compact and simple in structure, stable and reliable in performance, avoids misoperation, and ensures the personal safety of operators.

[0010] The objective of this utility model is achieved through the following technical measures: a bypass load switch operating mechanism, characterized in that the bypass load switch operating mechanism does not have an energy storage spring, and includes a sealed housing, a drive mechanism, an electric transmission mechanism, a manual operating mechanism, and a locking mechanism. The electric transmission mechanism includes an electric transmission main shaft rotatably mounted in the housing and a cam disposed on the rear end of the electric transmission main shaft and rotatably therewith. Rollers are provided on two opposite protrusions of the cam. The drive mechanism can drive the electric transmission main shaft to rotate. The manual operating mechanism includes a manual operating main shaft rotatably mounted in the housing and a U-shaped lever disposed on the rear end of the manual operating main shaft and rotatably therewith. The rear end of the manual operating main shaft is connected to the switch main shaft of the load switch body in the gas chamber through a dynamic seal on the housing, and the front end extends out of the housing to connect to the operating handle. When the interlocking mechanism is in the unlocked state, turning the operating handle in the direction indicated on the panel causes the manual operating spindle and dynamic seal to rotate. This, along with the energy storage and release of the spring on the switch body, drives the load switch body to quickly open and close, thus completing the manual opening and closing operation. When electric operation is needed, the motor is energized, and the electric drive spindle rotates in a predetermined direction. As the electric drive spindle rotates, the cam rotates, causing its rollers and U-shaped lever to abut against each other in predetermined positions, driving the manual operating spindle to rotate. This, along with the energy storage and release of the spring, completes the electric operation. When the interlocking mechanism is in the locked state, both manual and electric operations are locked by cutting off the electric drive circuit and mechanically restricting the rotation of the manual operating spindle. When the interlocking mechanism is in the unlocked state, the electric drive circuit is closed, and the mechanical restriction on the manual operating spindle is released, allowing the load switch body to open or close via manual or electric operation.

[0011] This utility model is a compact two-position load switch mechanism, with only two positions: load switch open and load switch closed. From the design stage, it eliminates the possibility of accidental operation of the live grounding switch, effectively protecting operators and equipment from accidental damage. Furthermore, this utility model is a springless energy storage mechanism, resulting in an extremely simple structure, compact layout, and reliable performance. Installation and replacement are also easier, preventing injury from the energy storage spring due to accidental activation during operation, thus enhancing operational safety. In addition, this utility model features an integrated manual and electric operation design, used in conjunction with switching and interlocking devices, providing strong protection against accidental operation and ensuring safety.

[0012] This utility model provides a vertical first mounting plate and a second mounting plate inside the housing, with the second mounting plate and the first mounting plate arranged at an interval. The electric transmission mechanism, the drive mechanism, and the manual operation mechanism are all mounted on the first mounting plate, and the electric transmission spindle and the manual operation spindle can rotatably pass through the first mounting plate and the second mounting plate. The U-shaped lever on the manual operation spindle and the cam on the electric transmission spindle are both located between the first mounting plate and the rear plate of the housing. The transmission part between the drive mechanism and the electric transmission spindle is located between the first mounting plate and the second mounting plate.

[0013] The operating handle of this utility model has a pointer at its rotation center for indicating the open / closed state. A locking limit pin is provided on the back of the pointer. The locking mechanism locks the manual operation by abutting the locking limit pin, and unlocks it by resisting it. The operating handle of this utility model integrates operation, open / closed pointer, and locking limit. The operating handle is installed at the end of the manual operation spindle, which can both control the open / closed state and indicate the status.

[0014] The locking mechanism of this utility model includes a locking rod mounting plate fixed to the outer wall of the housing, a locking rod, a locking main shaft rotatably mounted on the housing, an unlocking / locking handle rotatably mounted on the locking rod mounting plate, and a micro switch disposed in the housing. The locking rod mounting plate is an arc-shaped plate with a pair of guide holes coaxial with the upper and lower axes. The locking rod vertically passes through the pair of guide holes. The front end of the locking main shaft extending out of the housing has a crank arm plate that rotates synchronously with it. Both the locking rod and the crank arm plate have oblong holes. A circular hole is provided on the locking / unlocking handle. A transmission pin passes through the oblong hole on the crank arm plate and the locking rod, as well as the circular hole on the locking / unlocking handle, connecting the three together. A pressure rod that rotates synchronously with the locking main shaft is provided at the rear end of the locking main shaft that extends into the housing. The rotation of the locking / unlocking handle drives the locking rod to move upward through the transmission pin and abut against the rotation trajectory of the locking limit pin to lock the manual operation. At the same time, the locking main shaft rotates with the crank arm plate, causing the pressure rod to rotate and disengage from the pressure plate of the micro switch, disconnecting the electric drive circuit and realizing electrical locking. Conversely, unlocking occurs.

[0015] The electric drive spindle and the manual operation spindle of this utility model are equipped with multiple limit switches at their boss positions. The position of each limit switch is connected to a secondary control circuit and led out through a waterproof connector to a sealed cover for use in switch position determination, electrical control, and interlocking.

[0016] This invention provides an irregularly shaped spring on the outer wall of the housing to help limit the position of the unlocking and locking handle, ensuring that the handle remains in the unlocked or locked position and will not be accidentally moved.

[0017] The housing of this utility model consists of a sealing cover and a rear cover plate. The sealing cover is integrally molded from a stainless steel plate, and a sealing gasket is provided on its mounting flange plane to form a sealed cavity with the rear cover plate. The drive mechanism, electric transmission mechanism and manual operation mechanism are installed inside it. The front ends of the manual operation spindle and the locking spindle both extend out of the cavity through the bushing on the sealing cover.

[0018] This utility model has an opening / closing indicator panel on the outer wall of the housing, which cooperates with the pointer of the operating handle to indicate the closing and opening positions, and a counter observation window for observing and counting.

[0019] Compared with the prior art, the present invention has the following significant advantages:

[0020] (1) This utility model is a compact two-position load switch mechanism, that is, it has only two positions: load switch open and load switch closed. From the design source, it eliminates the possibility of misoperation of the live grounding switch and can effectively protect operators and equipment from accidental damage.

[0021] (2) This utility model is a springless energy storage mechanism. The required energy storage spring is separately arranged on the load switch, which is different from the existing integrated layout spring operating mechanism (the energy storage spring and transmission components are set on the mechanism body). The springless design makes the structure extremely simple, the layout compact and the performance reliable.

[0022] (3) The springless design of this utility model makes the installation and replacement of the mechanism easier, and will not cause injury to people due to accidental movement of the energy storage spring during operation, thus improving operational safety.

[0023] (4) The sealing cover of this utility model is integrally molded from stainless steel plate, with exquisite appearance and high precision. The entire main body of the mechanism is housed in the cavity formed by the mounting surface of the sealing cover and the shell body. The protection level can reach IP54, effectively isolating external dust and moisture from entering, preventing short circuits in electrical circuits, rusting of the mechanism, jamming and other situations, and extending service life.

[0024] (5) The forced locking device of this utility model has flexible and easy-to-operate unlocking / locking function switching. With one pull and one push, manual and electrical operation can be forcibly locked, keeping the mechanism in the current state. In the energized state, it will not cause the load side to lose power due to accidental contact. In the power outage or maintenance state, it will not cause the load side to be energized due to accidental contact, endangering personal safety.

[0025] (6) The switch and mechanism of this utility model have direct shaft transmission, which has high transmission efficiency, saves effort in operation, and has strong mechanism stability. Attached Figure Description

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] Figure 1 This is the front view of this utility model;

[0028] Figure 2 This is a side view of the present invention;

[0029] Figure 3 This is a rear view of the present invention;

[0030] Figure 4 This is a front view of the locking mechanism of this utility model;

[0031] Figure 5 This is a side view of the locking mechanism of this utility model;

[0032] Figure 6 This is a schematic diagram of the structure of this utility model in the locked state;

[0033] Figure 7 This is a schematic diagram of the structure of this utility model in the unlocked state;

[0034] Figure 8 This is a partial structural diagram of the present invention in the locked state (showing the locking mechanism);

[0035] Figure 9 This is a partial structural diagram of the present invention in the unlocked state (showing the locking mechanism);

[0036] Figure 10 This is a schematic diagram of the structure of this utility model when it is in the unlocked state and the circuit is open;

[0037] Figure 11 This is a schematic diagram of the structure of this utility model when it is in the unlocked state and the circuit is closed.

[0038] In the diagram: Ⅰ-Sealing cover assembly, Ⅱ-Mechanism body, Ⅲ-Operation indicator assembly, Ⅳ-Locking mechanism, Ⅴ-Electric transmission mechanism, 1-Sealing cover, 2a-First support column, 2b-Second support column, 3-Cam, 4-First roller, 5-Second roller, 6-Electric transmission spindle, 7-U-shaped lever, 8-First mounting plate, 9-Second mounting plate, 10-Housing, 11-Micro switch, 12-Locking spindle, 13-Operating handle, 14-DC motor, 15-Dynamic seal, 16-Manual operation spindle, 17-Locking limit pin, 18-Locking rod, 19-Locking rod mounting plate, 20-Transmission pin, 21-Pressure rod, 22-Irregularly shaped spring, 23-Unlocking handle, 24-Screw, 25-First chamber, 26-Second chamber, 27-Pointer, 28-Crank arm plate. Detailed Implementation

[0039] This utility model discloses a bypass load switch operating mechanism, which is a two-position mechanism with a separate spring arrangement. The main body of the mechanism is a structure without an energy storage spring, while the required energy storage spring is separately installed on the bypass load switch body. One end of the energy storage spring is connected to the switch body, and the other end is connected to a transmission component on the switch main shaft. Therefore, the energy storage spring arrangement in this utility model differs from the existing integrated spring-mechanism body arrangement. Furthermore, to prevent misoperation, this mechanism is designed with only two positions: the load switch open position and the load switch closed position.

[0040] like Figures 1-11 As shown, this utility model discloses a bypass load switch operating mechanism, comprising a sealing cover assembly I, a mechanism body II, an operation indicator assembly III, a locking mechanism IV, and an electric drive mechanism V. The sealing cover assembly I includes a sealed housing 10 and its associated sealing gaskets, bushings, etc. The mechanism body II includes a drive mechanism and a manual operation mechanism. The electric drive mechanism V includes an electric drive main shaft 6 rotatably mounted in the housing 10 and a cam 3 located on the rear end of the electric drive main shaft 6 and rotating synchronously with it. A first roller 4 and a second roller 5 are respectively provided on two opposite protrusions of the cam 3. A limit switch is arranged on the protrusion portion of the electric drive main shaft 6 to output the position status information of the electric drive main shaft 6, which is connected to the opening / closing control circuit to coordinate the opening / closing of the control mechanism and its electrical interlocking function. The drive mechanism uses a DC motor 14, which can drive the electric drive main shaft 6 to rotate.

[0041] The manual operating mechanism includes a manual operating spindle 16 rotatably mounted in the housing 10 and a U-shaped lever 7 located on the rear end of the manual operating spindle 16 and rotating synchronously therewith. The boss portion of the manual operating spindle 16 is equipped with a limit switch, which outputs switch position status information, connects to the opening and closing control circuit, and coordinates the opening and closing and electrical interlock functions of the control mechanism. The rear end of the manual operating spindle 16 is connected to the switch spindle of the load switch body in the gas chamber through the dynamic seal 15 on the housing 10, and the front end extends out of the housing 10 to connect to the operating handle 13.

[0042] Both the electric drive spindle and the manual operation spindle have multiple limit switches on their boss positions. These switches are connected to the secondary control circuit and led out through a waterproof connector to the sealing cover for switch position determination, electrical control, and interlocking.

[0043] Under external force, both cam 3 and U-shaped lever 7 rotate around their respective axes. The intersection of their motion trajectories is the point of contact between the two shaft transmission components. During manual operation, the electric drive spindle 6 remains stationary at a predetermined position. During electric operation, the roller rotates to the contact point, contacting the U-shaped lever 7. The U-shaped lever 7 then drives the manual operation spindle 16 to passively rotate along a predetermined trajectory and direction until the energy storage spring releases after passing its compression inflection point and separates at another contact point. The switch can then complete its opening and closing operation. At this point, the electric drive spindle 6 continues to rotate until the limit switch at the boss position changes position and cuts off. The electric drive spindle 6 then stops rotating to a specific position, awaiting the next operation. The load switch body can be opened or closed by either manual or electric operation.

[0044] The first roller 4 and the second roller 5 on the cam 3 are arranged at a 180-degree angle. The cam is linked with the U-shaped lever through the rollers on it. This linkage structure is a conventional technology in this field and will not be described in detail here.

[0045] When the locking mechanism is in the unlocked state, turn the operating handle 13 in the direction indicated on the panel. The manual operating spindle 16 and the dynamic seal 15 will rotate accordingly. With the energy stored and released by the energy storage spring on the switch body, the load switch body will be driven to open and close quickly, thus completing the manual opening and closing operation. When electric operation is required, the motor 14 is energized. The electric drive spindle 6 rotates in a predetermined direction under the drive of the motor 14. The cam 3 rotates accordingly, causing the roller on it to contact the U-shaped lever 7 in a predetermined position and drive the manual operating spindle 16 to rotate. With the energy stored and released by the energy storage spring, the electric operation can be completed.

[0046] A first mounting plate 8 and a second mounting plate 9 are provided vertically within the housing 10. The second mounting plate 9 and the first mounting plate 8 are arranged at intervals. The electric drive mechanism, the drive mechanism, and the manual operation mechanism are all mounted on the first mounting plate 8. The electric drive spindle 6 and the manual operation spindle 16 can rotatably pass through the first mounting plate 8 and the second mounting plate 9. The two spindles are specifically limited and fixed by bushings and snap rings on the two mounting plates. The first mounting plate 8 is supported by four first pillars 2a fixed to the rear plate of the housing 10, thereby forming a first chamber 25 between the first mounting plate 8 and the rear plate of the housing 10. This chamber provides rotation space for components such as the dynamic seal 15, the cam 3, and the U-shaped lever 7. The second mounting plate 9 is supported by four second pillars 2b on the first mounting plate 8, thereby forming a second chamber 26 between the first mounting plate 8 and the second mounting plate 9. This chamber provides movement space for the transmission assembly between the DC motor 14 and the electric drive spindle 6.

[0047] The operating handle 13 consists of a long, rod-shaped handle body and a pointer 27 for indicating the open / closed state. The handle body is fixed to the manual operation spindle 16 and can rotate synchronously with it. The pointer 27 is located at the center of rotation of the handle body and is perpendicular to the handle body. A locking limit pin 17 is provided on the back of the pointer 27. The locking mechanism locks manual operation by abutting the locking limit pin 17, and unlocks it by moving away from it. The operating handle 13 integrates operation, open / closed pointer, and locking limit, thus controlling both the open / closed state and indicating the status.

[0048] The locking mechanism includes a locking rod mounting plate 19 fixed to the outer wall of the housing 10, a locking rod 18, a locking main shaft 12 rotatably mounted on the housing 10, an unlocking / locking handle 23 rotatably mounted on the locking rod mounting plate 19 via a screw 24, and a micro switch 11 disposed in the housing 10. The locking rod mounting plate 19 is an arc-shaped plate with a pair of guide holes coaxial with the upper and lower axes. The locking rod 18 is vertically inserted into the pair of guide holes. The front end of the locking main shaft 12 extending out of the housing 10 has a crank arm plate 28 that can rotate synchronously with it. Both the locking rod 18 and the crank arm plate 28 have oblong holes, and the unlocking / locking handle 23 has a round hole. A transmission pin 20 is sequentially... The three components are connected together through the oblong holes on the crank arm plate 28 and the locking rod 18, and the round hole on the unlocking / locking handle 23. A pressure rod 21, which rotates synchronously with the locking main shaft 12 extending into the housing 10, is provided at the rear end of the locking main shaft 12 (rotating with the locking main shaft 12 drives the pressure rod 21 to rotate, pressing the pressure plate of the micro switch 11 to switch the opening and closing points). Rotation of the unlocking / locking handle 23 drives the locking rod 18 upwards via a transmission pin, abutting against the movement trajectory of the locking limit pin 17 to lock manual operation. Simultaneously, the locking main shaft 12, rotating with the crank arm plate 28, drives the pressure rod 21 to rotate, disengaging it from the pressure plate of the micro switch 11, cutting off the drive control circuit, disabling electric operation, and achieving electrical locking; conversely, it unlocks. An irregularly shaped spring piece 22 is provided on the outer wall of the housing 10 to assist in limiting the position of the unlocking / locking handle 23, ensuring the handle remains in the unlocked or locked position and does not move accidentally.

[0049] The housing 10 consists of a sealing cover 1 and a rear cover plate. The sealing cover 1 is integrally molded from a stainless steel plate. Its mounting flange plane is superimposed with a sealing gasket, forming a cavity with the rear cover plate. The main body of the mechanism II, the electric transmission component V, etc. are all installed inside it. The front ends of the manual operation spindle and the locking spindle extend through the bushing on the sealing cover for expansion and operation.

[0050] The outer wall of the sealing cover is equipped with a locking mechanism IV. When the locking mechanism IV is in the locked state, manual operation and electric operation are locked by cutting off the electric drive circuit and mechanically restricting the rotation of the manual operation spindle. When the locking mechanism is in the unlocked state, the electric drive circuit is closed and the mechanical restriction on the manual operation spindle is released. The load switch body can be opened or closed by operating either the manual operation or the electric operation mode.

[0051] The inner wall of the sealing cover is equipped with a micro switch that isolates manual and electric operation, ensuring that manual and electric operation will not occur simultaneously. The outer wall of the sealing cover is equipped with an opening and closing indicator panel that cooperates with the pointer 27 of the operating handle 13 to indicate the opening and closing position, and a counter observation window for observing the count, making the status of the mechanism intuitive and clear.

[0052] This utility model includes a main body, a sealing cover assembly, a locking assembly, and an operation indicator assembly. The manual operation shaft assembly directly acts on the shaft seal and the switch shaft. The DC motor, through gears, an electric drive shaft, a shaft-end cam, and rollers, abuts against a U-shaped lever on the manual operation shaft at a specific position on its rotation trajectory, indirectly acting on the switch shaft through the manual drive shaft. The main body, shaft drive assembly, and DC motor are arranged inside the sealing cover assembly cavity, while the operation indicator assembly and locking mechanism assembly are arranged outside the sealing cover assembly.

[0053] The working principle and process of this utility model are as follows:

[0054] 1. Lockout operation:

[0055] In the unlocked state, pulling down the unlocking / locking handle 23 releases it from the limiting position of the irregular spring 22. Through leverage, the transmission pin 20 drives the locking rod 18 to slide upwards and into the locking limiting pin 17 on the operating handle 13, where it abuts against the locking limiting pin 17. Due to the restriction of the locking rod 18, neither clockwise nor counterclockwise manual closing operations can be completed, thus locking manual operation. Simultaneously, the pressure rod 21 is isolated from the pressure plate of the microswitch 11, reversing the opening and closing points of the microswitch 11, opening the circuit for the opening and closing control, and preventing electric opening and closing operations, thus achieving electrical interlocking. (See [link]). Figure 6 and Figure 8 .

[0056] 2. Unlocking process:

[0057] In the locked state, pushing the unlocking handle 23 upwards causes it to overcome the elastic force of the irregularly shaped spring 22 and enter the limit position. Through the lever principle, the locking rod 18 retracts beyond the range of motion of the locking limit pin 17 on the operating handle 13, releasing the restriction of the locking rod 18. This allows for both clockwise and counterclockwise manual closing and opening operations, unlocking the manual operation. Simultaneously, the pressure rod 21 abuts against the pressure plate of the micro switch 11, aligning the micro switch 11's opening and closing points (as required by the electrical opening and closing control circuit design). This connects the opening and closing control circuit, enabling normal electric opening and closing operations and achieving electrical unlocking. (See also...) Figure 7 and Figure 9 .

[0058] 3. Manual and electric operation:

[0059] With the interlocking mechanism IV unlocked, both manual and electric operations can be performed normally. For manual operation, the lever 7, dynamic seal 15, and load switch main shaft rotate with the manual operation main shaft 16. This, along with the energy storage and release of the energy stored in the spring on the switch body, causes the load switch body to quickly open and close, thus completing the manual operation. Since the movement trajectory of the lever 7 does not intersect with the cam 3 in the open / closed state, the electric drive main shaft 6 and its components will not be driven, allowing for independent manual operation without the electric drive mechanism operating. For electric operation, the motor drives the electric drive main shaft 6, causing the cam 3, first roller 4, second roller 5, and their components to rotate. The rollers collide or separate at the intersection of their rotational trajectories with the lever 7's rotational trajectory. The manual operation main shaft 16 then rotates, causing the switch to open or close, completing the electric operation. (See below for details.) Figure 10 and Figure 11 .

[0060] The embodiments of this utility model are not limited thereto. Based on the above content of this utility model, and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, this utility model can also be modified, replaced or changed in various other forms, all of which fall within the scope of protection of this utility model.

Claims

1. A bypass load switch operating mechanism, characterized in that: The bypass load switch operating mechanism does not have an energy storage spring. The bypass load switch operating mechanism includes a sealed housing, a drive mechanism, an electric transmission mechanism, a manual operating mechanism, and a locking mechanism. The electric transmission mechanism includes an electric transmission main shaft rotatably mounted in the housing and a cam located at the rear end of the electric transmission main shaft that rotates synchronously with it. Rollers are provided on two opposing protrusions of the cam. The drive mechanism can drive the electric transmission main shaft to rotate. The manual operating mechanism includes a manual operating main shaft rotatably mounted in the housing and a U-shaped lever located at the rear end of the manual operating main shaft that rotates synchronously with it. The rear end of the manual operating main shaft is connected to the switch main shaft of the load switch body inside the gas chamber via a dynamic seal on the housing, while the front end extends out of the housing and connects to the operating handle. When the locking mechanism is in the unlocked state, the operation is performed by rotating the lever according to the direction indicated on the panel. The handle, manual operation spindle, and dynamic seal rotate accordingly. This, along with the energy storage and release of the energy stored in the spring on the switch body, drives the load switch body to quickly open and close, thus completing the manual opening and closing operation. When electric operation is needed, the motor is energized, and the electric drive spindle rotates in a predetermined direction under the motor's drive. As the electric drive spindle rotates, the cam rotates, causing its rollers to abut against the U-shaped lever in a predetermined position, driving the manual operation spindle to rotate. This, along with the energy storage and release of the spring, completes the electric operation. When the locking mechanism is in the locked state, both manual and electric operations are locked by cutting off the electric drive circuit and mechanically restricting the rotation of the manual operation spindle. When the locking mechanism is in the unlocked state, the electric drive circuit is closed, and the mechanical restriction on the manual operation spindle is released, allowing the load switch body to open or close via manual or electric operation.

2. The bypass load switch operating mechanism according to claim 1, characterized in that: The housing contains a vertical first mounting plate and a second mounting plate, which are arranged at an interval. The electric transmission mechanism, the drive mechanism, and the manual operation mechanism are all mounted on the first mounting plate. The electric transmission spindle and the manual operation spindle can rotatably pass through the first mounting plate and the second mounting plate. The U-shaped lever on the manual operation spindle and the cam on the electric transmission spindle are located between the first mounting plate and the rear plate of the housing. The transmission part between the drive mechanism and the electric transmission spindle is located between the first mounting plate and the second mounting plate.

3. The bypass load switch operating mechanism according to claim 2, characterized in that: The operating handle consists of a long rod-shaped handle body and a pointer for indicating the open / closed state. The handle body is fixed on the manual operation spindle and can rotate synchronously with it. The pointer is located at the rotation center of the handle body and is perpendicular to the handle body. A locking limit pin is provided on the back of the pointer. The locking mechanism locks the manual operation by abutting the locking limit pin, and unlocks it by resisting it.

4. The bypass load switch operating mechanism according to claim 3, characterized in that: The locking mechanism includes a locking rod mounting plate fixed to the outer wall of the housing, a locking rod, a locking main shaft rotatably mounted on the housing, an unlocking / locking handle rotatably mounted on the locking rod mounting plate, and a micro switch disposed in the housing. The locking rod mounting plate is an arc-shaped plate with a pair of guide holes coaxial with its upper and lower axes. The locking rod vertically passes through these guide holes. The front end of the locking main shaft extending out of the housing has a crank arm plate that rotates synchronously with it. Both the locking rod and the crank arm plate have oblong holes. The locking / unlocking handle has a round hole. A transmission pin passes through the oblong hole on the crank arm plate and the locking rod, as well as the round hole on the locking / unlocking handle, connecting the three together. A pressure rod that rotates synchronously with the locking main shaft is located at the rear end of the locking main shaft that extends into the housing. When the locking / unlocking handle rotates, the transmission pin drives the locking rod to move upward and abut against the rotation trajectory of the locking limit pin to lock the manual operation. At the same time, the locking main shaft rotates with the crank arm plate, causing the pressure rod to rotate and disengage from the pressure plate of the micro switch, disconnecting the electric drive circuit and realizing electrical locking. Conversely, unlocking occurs.

5. The bypass load switch operating mechanism according to claim 4, characterized in that: The housing consists of a sealing cover and a rear cover plate. The sealing cover is integrally molded from a stainless steel plate, and its mounting flange plane is provided with a sealing gasket to form a sealed cavity with the rear cover plate. The drive mechanism, electric transmission mechanism and manual operation mechanism are installed inside it. The front ends of the manual operation spindle and the locking spindle both extend out of the cavity through the bushing on the sealing cover.

6. The bypass load switch operating mechanism according to claim 5, characterized in that: Both the electric drive spindle and the manual operation spindle have multiple limit switches arranged on their boss positions. The positions of these switches are connected to the secondary control circuit and led out through a waterproof connector to the sealing cover for use in switch position determination, electrical control, and interlocking.

7. The bypass load switch operating mechanism according to claim 6, characterized in that: An irregularly shaped spring is provided on the outer wall of the housing to assist in limiting the position of the unlocking handle.

8. The bypass load switch operating mechanism according to claim 7, characterized in that: The outer wall of the housing is provided with an opening / closing indicator panel that works with the pointer of the operating handle to indicate the opening / closing position, and a counter observation window for observing the count.

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