Fixed high-voltage switch cabinet transmission device

Abstract

The utility model discloses a fixed high-voltage switch cabinet transmission device which is a hinge four-bar mechanism composed of a switch crank arm, a special-shaped crank arm, a connecting rod and a rack, and the rotating circle center of the switch crank arm and the rotating circle center of the special-shaped crank arm are located at the two ends of the rack. The two ends of the connecting rod are hinged to the free end of the switch crank arm and one end of the special-shaped crank arm respectively, and a shifting mechanism used for shifting the special-shaped crank arm to rotate when the driving crank arm rotates is arranged between the other end of the special-shaped crank arm and the free end of the driving crank arm. According to the utility model, based on a fixed switch cabinet, a unified transmission scheme is provided, programmed and electric operation among a plurality of components in the switch cabinet is realized, the switch cabinet has good adaptability, and not only can electric transformation be carried out on an old switch cabinet, but also the switch cabinet can be directly adopted in the manufacture of a novel switch cabinet.

Description

Technical Field

[0001] This utility model relates to a fixed high-voltage switchgear transmission device. Background Technology

[0002] High-voltage switchgear is a type of switchgear and control equipment. It is a high-voltage complete power distribution device that assembles primary and secondary equipment according to a certain circuit scheme and relevant national standards. It is used in power plants and substations to control and protect generators, transformers and high-voltage lines, and can also be used for starting and protecting large high-voltage AC motors.

[0003] Fixed high-voltage switchgear is characterized by its fixed installation of major electrical equipment such as high-voltage circuit breakers, offering advantages in reliable connection and power supply. A typical fixed switchgear configuration includes key components such as an upper disconnect switch, upper grounding switch, lower disconnect switch, lower grounding switch, and circuit breaker. Currently, there are numerous manufacturers producing fixed switchgear, and its usage is widespread. However, there is a lack of standardization in cabinet types, operating methods, and the installation dimensions of internal components vary significantly, resulting in numerous configuration options. This makes achieving electrified operation of fixed switchgear, especially the electrification retrofitting of older switchgear to achieve intelligent operation and control, quite challenging. Utility Model Content

[0004] The purpose of this utility model is to provide a fixed high-voltage switchgear transmission device that can realize programmed and electric operation between multiple components in the switchgear.

[0005] The purpose of this utility model is achieved through the following technical measures: a fixed high-voltage switchgear transmission device, characterized in that it is a hinged four-bar linkage mechanism composed of a switch crank arm, a shaped crank arm, a connecting rod and a frame, wherein the rotation centers of the switch crank arm and the shaped crank arm are located at both ends of the frame, and the two ends of the connecting rod are respectively hinged to the free end of the switch crank arm and one end of the shaped crank arm, and a turning mechanism for turning the shaped crank arm to rotate when the driving crank arm rotates is provided between the other end of the shaped crank arm and the free end of the driving crank arm.

[0006] This utility model is based on a fixed switch cabinet and provides a unified transmission scheme to realize programmed and electric operation between multiple components in the switch cabinet. It has good compatibility with the switch cabinet and can not only be used to electrify old switch cabinets, but also be directly adopted in the manufacturing of new switch cabinets.

[0007] The actuating mechanism of this utility model includes a roller groove on the irregularly shaped crank arm and a roller on the drive crank arm. The rotation of the drive crank arm causes the roller to enter the roller groove to drive the irregularly shaped crank arm to rotate.

[0008] The transmission device described in this utility model is integrated on the left side of the center of the front panel of the switch cabinet, which does not obstruct the opening and closing of the front door of the switch cabinet and facilitates manual operation and maintenance.

[0009] The fixed high-voltage switchgear transmission device of this utility model includes transmission devices for an upper grounding switch, a lower grounding switch, an upper disconnecting switch, and a lower disconnecting switch. Each drive crank arm is coaxially fixedly installed with the operating panel, and each drive crank arm is arranged in parallel along the axial direction and evenly distributed along the circumference of the axis.

[0010] The design rotation angle of the grounding switch of this utility model is 60 degrees, the center distance of the switch arm is 60mm, the rotation angle of the irregularly shaped arm is 80 degrees, the center distance of the irregularly shaped arm is 75mm, the opening start angle of the irregularly shaped arm is 56 degrees, and the length of the connecting rod is 1040.5mm.

[0011] The design rotation angle of the grounding switch of this utility model is 90 degrees, the center distance of the switch arm is 52mm, the rotation angle of the irregularly shaped arm is 80 degrees, the center distance of the irregularly shaped arm is 75mm, the opening start angle of the irregularly shaped arm is 23 degrees, and the length of the connecting rod is 883mm.

[0012] The upper disconnect switch of this utility model has a rotation angle of 65 degrees, the center distance of the switch arm is 75 mm, the rotation angle of the irregularly shaped arm is 80 degrees, the center distance of the irregularly shaped arm is 75 mm, the closing start angle of the irregularly shaped arm is 69 degrees, and the length of the connecting rod is 857.5 mm.

[0013] The lower isolating switch of this utility model has a rotation angle of 65 degrees, a center distance of 75 mm between the switch arms, a rotation angle of 80 degrees between the irregularly shaped arms, a center distance of 75 mm between the irregularly shaped arms, a closing start angle of 52 degrees for the irregularly shaped arms, and a length of 1114.5 mm.

[0014] Compared with the prior art, the present invention has the following significant advantages:

[0015] (1) This utility model is based on a fixed switch cabinet and provides a unified transmission scheme to realize the programmed and electric operation between multiple components in the switch cabinet. It has good compatibility with the switch cabinet and can not only be used to electrify old switch cabinets, but also be directly adopted in the manufacturing of new switch cabinets.

[0016] (2) The design parameters of interchangeable parts are provided for the design, trial production and mass production of the transmission device of this utility model. The processing parts of the transmission device are uniform, saving investment and equipment costs.

[0017] (3) Based on changes in spatial position and design requirements, this utility model allows for arbitrary sequential combination operations of the upper grounding switch, lower grounding switch, upper disconnecting switch, and lower disconnecting switch. It easily achieves modular and programmed operation; that is, rotating the operating panel 90 degrees constitutes one operating unit, and the transmission device can function as a separate module to operate a single switch. Rotating the same operating panel 360 degrees allows for the sequential operation of four switch units, covering other solutions including typical configurations, such as isolation cabinets with only disconnecting switches installed, and incoming line cabinets without lower grounding switches. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a side view of the transmission device of this utility model installed in a fixed high-voltage switchgear;

[0020] Figure 2 This is a schematic diagram of the grounding switch of this utility model in the closed position;

[0021] Figure 3 This is a schematic diagram of the grounding switch of this utility model in the open position;

[0022] Figure 4 This is a schematic diagram of the grounding switch of this utility model in the closed position;

[0023] Figure 5 This is a schematic diagram of the grounding switch of this utility model in the open position;

[0024] Figure 6 This is a schematic diagram of the disconnecting switch of this utility model in the open position;

[0025] Figure 7 This is a schematic diagram of the isolating switch of this utility model in the closed position;

[0026] Figure 8 This is a schematic diagram of the lower isolating switch in the open position according to this utility model;

[0027] Figure 9 This is a schematic diagram of the lower isolating switch in the closed position according to this utility model.

[0028] In the diagram: 1-Upper grounding switch and its transmission device; 1.1-Upper grounding switch; 1.2-First switch crank arm; 1.3-First connecting rod; 1.4-First irregular crank arm; 1.4.1-First roller groove; 1.5-First drive crank arm; 1.5.1-First roller; 1.6-First operating panel; 1.7-First operating lever; 2-Lower grounding switch and its transmission device; 2.1-Lower grounding switch; 2.2-Second switch crank arm; 2.3-Second connecting rod; 2.4-Second irregular crank arm; 2.4.1-Second roller groove; 2.5-Second drive crank arm; 2.5.1-Second roller; 2.6-Second operating panel; 2.7-Second operating lever 3-Upper disconnect switch and its transmission device; 3.1-Upper disconnect switch; 3.2-Third switch crank arm; 3.3-Third connecting rod; 3.4-Third irregular crank arm; 3.4.1-Third roller groove; 3.5-Third drive crank arm; 3.5.1-Third roller; 3.6-Third operating panel; 3.7-Third operating lever; 4-Lower disconnect switch and its transmission device; 4.1-Lower disconnect switch; 4.2-Fourth switch crank arm; 4.3-Fourth connecting rod; 4.4-Fourth irregular crank arm; 4.4.1-Fourth roller groove; 4.5-Fourth drive crank arm; 4.5.1-Fourth roller; 4.6-Fourth operating panel; 4.7-Fourth operating lever. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the embodiments and accompanying drawings to help those skilled in the art better understand the inventive concept of the present invention. However, the scope of protection of the claims of the present invention is not limited to the following embodiments. For those skilled in the art, all other embodiments obtained without creative effort without departing from the inventive concept of the present invention are within the scope of protection of the present invention.

[0030] like Figure 1 As shown, this utility model discloses a fixed high-voltage switchgear transmission device, which consists of four parts: an upper grounding switch and its transmission device 1, a lower grounding switch and its transmission device 2, an upper disconnecting switch and its transmission device 3, and a lower disconnecting switch and its transmission device 4. The transmission device is integrated into the middle of the front panel of the switchgear, on the left side, without obstructing the opening and closing of the switchgear's front door, facilitating manual operation and maintenance.

[0031] like Figure 2 , Figure 3As shown, the upper grounding switch and its transmission device 1 are described. The transmission device is a hinged four-bar linkage consisting of a first switch crank arm 1.2, a first irregular crank arm 1.4, a first connecting rod 1.3, and a frame. The rotation centers of the first switch crank arm 1.2 and the first irregular crank arm 1.4 are located at both ends of the frame. The two ends of the first connecting rod 1.3 are respectively hinged to the free end of the first switch crank arm 1.2 and one end of the first irregular crank arm 1.4. A actuating mechanism is provided between the other end of the first irregular crank arm 1.4 and the free end of the first driving crank arm 1.5 for actuating the first irregular crank arm 1.4 when the first driving crank arm 1.5 rotates. The actuating mechanism includes a first roller groove 1.4.1 on the first irregular crank arm 1.4 and a first roller 1.5.1 on the first driving crank arm 1.5. The rotation of the first driving crank arm 1.5 causes the first roller 1.5.1 to enter the first roller groove 1.4.1 to drive the first irregular crank arm 1.4 to rotate. The first drive crank arm 1.5 is coaxially mounted with the first operating panel 1.6, and the first operating panel 1.6 is provided with an operating hole for the first operating lever 1.7 to be inserted.

[0032] like Figure 4 , Figure 5 As shown, the lower grounding switch and its transmission device 2 are described. This transmission device is a hinged four-bar linkage consisting of a second switch crank arm 2.2, a second irregular crank arm 2.4, a second connecting rod 2.3, and a frame. The rotation centers of the second switch crank arm 2.2 and the second irregular crank arm 2.4 are located at both ends of the frame. Both ends of the second connecting rod 2.3 are hinged to the free ends of the second switch crank arm 2.2 and one end of the second irregular crank arm 2.4, respectively. A actuating mechanism is provided between the other end of the second irregular crank arm 2.4 and the free end of the second driving crank arm 2.5 to actuate the second irregular crank arm 2.4 when the second driving crank arm 2.5 rotates. The actuating mechanism includes a second roller groove 2.4.1 on the second irregular crank arm 2.4 and a second roller 2.5.1 on the second driving crank arm 2.5. Rotation of the second driving crank arm 2.5 causes the second roller 2.5.1 to enter the second roller groove 2.4.1, thereby driving the second irregular crank arm 2.4 to rotate. The second drive crank arm 2.5 is coaxially mounted with the second operating panel 2.6, and the second operating panel 2.6 is provided with an operating hole for the second operating lever 2.7 to be inserted.

[0033] like Figure 6 , Figure 7As shown, the upper disconnect switch and its transmission device 3 are configured. This transmission device is a hinged four-bar linkage consisting of a third switch crank arm 3.2, a third irregular crank arm 3.4, a third connecting rod 3.3, and a frame. The rotation centers of the third switch crank arm 3.2 and the third irregular crank arm 3.4 are located at both ends of the frame. The two ends of the third connecting rod 3.3 are hinged to the free ends of the third switch crank arm 3.2 and one end of the third irregular crank arm 3.4, respectively. A actuating mechanism is provided between the other end of the third irregular crank arm 3.4 and the free end of the third driving crank arm 3.5 to actuate the rotation of the third irregular crank arm 3.4 when the third driving crank arm 3.5 rotates. The actuating mechanism includes a third roller groove 3.4.1 on the third irregular crank arm 3.4 and a third roller 3.5.1 on the third driving crank arm 3.5. Rotation of the third driving crank arm 3.5 causes the third roller 3.5.1 to enter the third roller groove 3.4.1, thereby driving the third irregular crank arm 3.4 to rotate. The third drive crank arm 3.5 is coaxially mounted with the third operating panel 3.6, and the third operating panel 3.6 is provided with an operating hole for the third operating lever 3.7 to be inserted.

[0034] like Figure 8 , Figure 9 As shown, the lower disconnect switch and its transmission device 4 are described. This transmission device is a hinged four-bar linkage consisting of a fourth switch crank arm 4.2, a fourth irregular crank arm 4.4, a fourth connecting rod 4.3, and a frame. The rotation centers of the fourth switch crank arm 4.2 and the fourth irregular crank arm 4.4 are located at both ends of the frame. The two ends of the fourth connecting rod 4.3 are hinged to the free ends of the fourth switch crank arm 4.2 and one end of the fourth irregular crank arm 4.4, respectively. A actuating mechanism is provided between the other end of the fourth irregular crank arm 4.4 and the free end of the fourth driving crank arm 4.5 to actuate the rotation of the fourth irregular crank arm 4.4 when the fourth driving crank arm 4.5 rotates. The actuating mechanism includes a fourth roller groove 4.4.1 on the fourth irregular crank arm 4.4 and a fourth roller 4.5.1 on the fourth driving crank arm 4.5. Rotation of the fourth driving crank arm 4.5 causes the fourth roller 4.5.1 to enter the fourth roller groove 4.4.1, thereby driving the fourth irregular crank arm 4.4 to rotate. The fourth drive crank arm 4.5 is coaxially mounted with the fourth operating panel 4.6, and the fourth operating panel 4.6 is provided with an operating hole for the fourth operating lever 4.7 to be inserted.

[0035] The transmission device of this utility model includes a transmission device for an upper grounding switch, a lower grounding switch, an upper disconnecting switch, and a lower disconnecting switch. Each drive crank arm is coaxially fixedly installed with the operating panel. Each drive crank arm is arranged in parallel along the axial direction and evenly distributed along the circumference of the axis. The first, second, third, and fourth operating panels are the same operating panel, and the first, second, third, and fourth operating levers are the same operating lever.

[0036] A parameter design method for the above-mentioned fixed high-voltage switchgear drive device includes the following steps:

[0037] S1. Determine the center position of the switch's opening and closing rotation based on the design structure layout of the switch cabinet;

[0038] S2. Based on the center position of the switch's rotation when it is closed and open, and given the designed rotation angle of the switch, define the center distance of the switch arm, and obtain the center position and rotation angle of the switch arm's rotation.

[0039] S3. Confirm the position of the rotation center of the control panel according to the operation requirements of the switchgear;

[0040] S4. Based on the distance between the center of rotation of the irregular-shaped crank arm and the center of rotation of the operating panel, determine the center position of rotation of the irregular-shaped crank arm, and rotate the drive crank arm so that the roller on it rolls along the roller groove of the irregular-shaped crank arm to determine the rotation angle of the irregular-shaped crank arm.

[0041] S5, the switch crank arm, the connecting rod, the irregular crank arm, and the rotation center of the switch crank arm and the irregular crank arm form a planar hinge four-bar linkage mechanism. According to the structural design requirements and the force analysis of the rods, the center distance of the irregular crank arm, the opening / closing starting angle of the irregular crank arm, and the length of the connecting rod are confirmed.

[0042] S6. Draw a simplified kinematic diagram of a four-bar linkage.

[0043] The rotation angle of the irregular crank arm is the theoretical design value minus the deformation of the rod and the machining tolerance. If the switch does not open or close properly at this time, adjust the length of the connecting rod until the switch opens or closes properly.

[0044] Determine the installation positions of the upper grounding switch, lower grounding switch, upper disconnect switch, and lower disconnect switch; and the installation position of the transmission device. Also determine: the rotation angle, starting position, and final position of the operating lever; the size of the operating panel and its center of rotation; the center of rotation and rotation angle of the drive crank arm; the diameter of the roller mounted on the drive crank arm; the distance between the center of the roller and the center of rotation of the drive crank arm; the center of rotation of the irregular crank arm (the distance between the center of rotation of the drive crank arm and the center of rotation of the irregular crank arm); the radius and size of the roller groove; and the output angle and output radius of the irregular crank arm.

[0045] Given the above known conditions, draw the design diagram:

[0046] (1) Based on the center position and angle of the rotation of the upper grounding switch when it is closed and open, the center position and angle of the rotation of the switch arm are obtained. Based on the center position of the rotation of the irregular-shaped arm and the output angle of the irregular-shaped arm, a simplified kinematic diagram of the four-bar linkage is drawn on the figure. A planar hinge four-bar linkage mechanism is formed, and force analysis and optimization design are carried out to determine the starting and ending positions of the rotation of the irregular-shaped arm, the length of the connecting rod, and the length of the switch arm. This ensures that the closing and opening of the upper grounding switch meet the requirements. Furthermore, when the upper grounding switch is in the open position, the irregular-shaped arm rotates past the dead point position. This achieves the effect that the upper grounding switch can only be operated when the irregular-shaped arm rotates in the opposite direction under the action of vibration or other external forces, thus preventing the upper grounding switch from being closed accidentally.

[0047] (2) Based on the center position and angle of the closing and opening rotation of the lower grounding switch, the center position and angle of the rotation of the switch crank arm are obtained. Based on the center position of the rotation of the irregular crank arm and the output angle of the irregular crank arm, a simplified kinematic diagram of the four-bar linkage is drawn on the figure. A planar hinge four-bar linkage mechanism is formed, and force analysis and optimization design are carried out to determine the starting and ending positions of the irregular crank arm rotation, the length of the connecting rod, and the length of the switch crank arm. This ensures that the closing and opening of the lower grounding switch meet the requirements, so that when the lower grounding switch with spring is operated, the force of the spring is not transmitted to the operating rod, causing a force impact on the transmission device. That is, the angle of rotation of the lower grounding switch crank arm is ensured.

[0048] (3) Based on the center position and angle of the rotation of the upper disconnecting switch, the center position and angle of the rotation of the switch arm are obtained. Based on the center position of the rotation of the irregularly shaped arm and the output angle of the irregularly shaped arm, a simplified kinematic diagram of the four-bar linkage is drawn on the figure. A planar hinge four-bar linkage mechanism is formed, and force analysis and optimization design are carried out to determine the starting and final positions of the rotation of the irregularly shaped arm, the length of the connecting rod, and the length of the switch arm to ensure that the opening and closing of the upper disconnecting switch meet the requirements.

[0049] (4) Based on the center position and angle of the closing and opening rotation of the lower disconnecting switch, determine the center position and angle of the rotation of the switch crank arm. Based on the center position of the rotation of the irregular crank arm and the output angle of the irregular crank arm, draw a simplified kinematic diagram of the four-bar linkage on the figure, form a planar hinge four-bar linkage mechanism, perform force analysis and optimization design, determine the starting and final positions of the rotation of the irregular crank arm, the length of the connecting rod, and the length of the switch crank arm, to ensure that the closing and opening of the lower disconnecting switch meet the requirements.

[0050] Example:

[0051] See Figure 2This refers to the closed position of the grounding switch 1.1 on the fixed high-voltage switchgear. When the first operating lever 1.7 is rotated upwards by 90 degrees, it drives the first operating panel 1.6 to rotate counterclockwise by 90 degrees. The first drive crank arm 1.5, which shares the same rotation center with the first operating panel and is integrally connected, rotates counterclockwise by 90 degrees. Simultaneously, the first roller 1.5.1 mounted on the first drive crank arm 1.5 rotates counterclockwise and rolls within the first roller groove 1.4.1 of the irregular crank arm 1.4, driving the first irregular crank arm 1.4 to rotate clockwise by 80 degrees. The first irregular crank arm 1.4 drives the first connecting rod 1.3 to move, and the first connecting rod 1.3 drives the first switch crank arm 1.2 to rotate clockwise by 60 degrees, thus completing the opening operation of the grounding switch 1.1. (See also...) Figure 3 When the upper grounding switch 1.1 is in the open position, it is in the closed position. Conversely, when the upper grounding switch 1.1 is in the closed position, it has completed the closing and opening operations. When the upper grounding switch 1.1 is in the open position, the first irregularly shaped crank arm 1.4 rotates past its dead point. That is, the final position of the irregularly shaped crank arm 1.4 exceeds the line connecting the rotation center of the upper grounding switch 1.1 and the rotation center of the first irregularly shaped crank arm 1.4. This ensures that the upper grounding switch 1.1 can only rotate when the first irregularly shaped crank arm 1.4 rotates under the action of vibration or other external forces, thus preventing the upper grounding switch 1.1 from accidentally closing.

[0052] Given the above-mentioned conditions, draw the design diagram:

[0053] (1) For example Figure 2 , Figure 3 As shown, based on the design and layout of the switch cabinet, the center position of the rotation of the upper grounding switch 1.1 when it is closed and open can be determined. It is known that the rotation angle of the upper grounding switch 1.1 is designed to be 60 degrees. The center distance of the first switch crank arm 1.2 is defined as 60 mm. According to the operation requirements of the switch cabinet, the rotation center position of the first operating panel 1.6 is confirmed. The rotation angle of the first operating lever 1.7 is 90 degrees and is symmetrical up and down. The distance between the rotation center of the first irregular crank arm 1.4 and the first operating panel 1.6 is 90 mm. When the first drive crank arm 1.5 is rotated, the first roller 1.5.1 on it rolls along the first roller groove 1.4.1 of the first irregular crank arm 1.4. The rotation angle of the first irregular crank arm 1.4 is 80 degrees. The first switch crank arm 1.2, the first connecting rod 1.3, and the first irregular crank arm 1.4, together with their rotation centers, form a hinged four-bar linkage. Based on structural design requirements and force analysis of the links, the center distance of the first irregular crank arm 1.4 is confirmed to be 75mm, the opening angle of the first irregular crank arm 1.4 is 56 degrees, falling in the third quadrant, and the length of the first connecting rod 1.3 is 1040.5mm. Draw a simplified kinematic diagram of the hinged four-bar linkage on the figure.

[0054] (2) For example Figure 4 , Figure 5As shown, based on the design and layout of the switchgear, the center position of the rotation of the lower grounding switch 2.1 when it is closed and open can be determined. It is known that the rotation angle of the lower grounding switch 2.1 is designed to be 90 degrees. The center distance of the second switch arm 2.2 is defined as 52 mm, which is the same as the parameter design method in (1). It is confirmed that the length of the second link 2.3 is 883 mm, and the opening starting angle of the second irregular arm 2.4 is 23 degrees, which falls in the third quadrant. The other parameters are the same. Draw a simplified kinematic diagram of the hinged four-bar linkage on the figure.

[0055] (3) For example Figure 6 , Figure 7 As shown, based on the design and layout of the switchgear, the center position of the rotation of the upper isolating switch 3.1 when it is closed and open can be determined. It is known that the rotation angle of the upper isolating switch 3.1 is designed to be 65 degrees. The center distance of the third switch arm 3.2 is defined as 75 mm, which is the same as the parameter design method in (1). It is confirmed that the length of the third link 3.3 is 857.5 mm, and the closing starting angle of the third irregular arm 4.4 is 69 degrees, which falls in the third quadrant. The other parameters are the same. Draw a simplified kinematic diagram of the hinged four-bar linkage on the figure.

[0056] (4) For example Figure 8 , Figure 9 As shown, based on the design and layout of the switchgear, the center position of the rotation of the lower isolating switch 4.1 when it is closed and open can be determined. It is known that the rotation angle of the lower isolating switch 4.1 is designed to be 65 degrees. The center distance of the fourth switch arm 4.2 is defined as 75 mm, which is the same as the parameter design method in (1). It is confirmed that the length of the fourth link 4.3 is 1114.5 mm, and the closing starting angle of the fourth irregular arm 4.4 is 52 degrees, which falls in the third quadrant. The other parameters are the same. Draw a simplified kinematic diagram of the hinged four-bar linkage on the figure.

[0057] Specific design parameters are shown in Table 1 (length unit: mm).

[0058]

[0059] (Table 1)

Claims

1. A fixed high-voltage switchgear drive device, characterized in that: It is a hinged four-bar linkage consisting of a switch crank arm, an irregular crank arm, a connecting rod, and a frame. The rotation centers of the switch crank arm and the irregular crank arm are located at both ends of the frame. The two ends of the connecting rod are respectively hinged to the free end of the switch crank arm and one end of the irregular crank arm. The other end of the irregular crank arm is provided with a turning mechanism between it and the free end of the drive crank arm for turning the irregular crank arm when the drive crank arm rotates.

2. The fixed high-voltage switchgear drive device according to claim 1, characterized in that: The actuating mechanism includes a roller groove on the irregularly shaped crank arm and a roller on the drive crank arm. The rotation of the drive crank arm causes the roller to enter the roller groove, thereby driving the irregularly shaped crank arm to rotate.

3. The fixed high-voltage switchgear drive device according to claim 2, characterized in that: The transmission device is integrated into the left side of the center of the front panel of the switch cabinet.

4. The fixed high-voltage switchgear drive device according to claim 3, characterized in that: The fixed high-voltage switchgear transmission device includes transmission devices for the upper grounding switch, lower grounding switch, upper disconnecting switch and lower disconnecting switch. Each drive crank arm is coaxially fixedly installed with the operating panel. Each drive crank arm is arranged in parallel along the axial direction and evenly distributed along the circumference of the axis.

5. The fixed high-voltage switchgear drive device according to claim 4, characterized in that: The upper grounding switch is designed to rotate at an angle of 60 degrees, the center distance of the switch arm is 60 mm, the rotation angle of the irregularly shaped arm is 80 degrees, the center distance of the irregularly shaped arm is 75 mm, the opening start angle of the irregularly shaped arm is 56 degrees, and the length of the connecting rod is 1040.5 mm.

6. The fixed high-voltage switchgear drive device according to claim 5, characterized in that: The design rotation angle of the grounding switch is 90 degrees, the center distance of the switch arm is 52 mm, the rotation angle of the irregular arm is 80 degrees, the center distance of the irregular arm is 75 mm, the opening start angle of the irregular arm is 23 degrees, and the length of the connecting rod is 883 mm.

7. The fixed high-voltage switchgear drive device according to claim 6, characterized in that: The upper disconnect switch is designed to rotate at an angle of 65 degrees, the center distance of the switch arm is 75 mm, the rotation angle of the irregularly shaped arm is 80 degrees, the center distance of the irregularly shaped arm is 75 mm, the closing start angle of the irregularly shaped arm is 69 degrees, and the length of the connecting rod is 857.5 mm.

8. The fixed high-voltage switchgear drive device according to claim 7, characterized in that: The lower disconnect switch is designed to rotate at an angle of 65 degrees, the center distance between the switch arms is 75 mm, the rotation angle of the irregularly shaped arm is 80 degrees, the center distance between the irregularly shaped arms is 75 mm, the closing start angle of the irregularly shaped arm is 52 degrees, and the length of the connecting rod is 1114.5 mm.

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