Dual power automatic transfer switch

Abstract

The application relates to a dual-power automatic transfer switch which comprises a support, a motor, a driving rod, a normal transmission rod and a standby transmission rod. The normal transmission rod and the standby transmission rod are rotatably arranged on the support and are located at two sides of a roller, one end of the normal transmission rod is provided with a first strip-shaped hole and a first arc-shaped hole which are communicated and is sleeved on the roller, one end of the standby transmission rod is provided with a second strip-shaped hole and a second arc-shaped hole which are communicated and is sleeved on the roller, when the roller rotates clockwise and drives the normal transmission rod to rotate to a preset position, the roller slides along the track of the second arc-shaped hole, and the standby transmission rod has no displacement. Or when the roller rotates counterclockwise and drives the standby transmission rod to rotate to a preset position, the roller slides along the track of the first arc-shaped hole, and the normal transmission rod has no displacement. The structure of the connecting rod driving the sliding block is adopted, the normal transmission rod and the standby transmission rod are installed in a superposition mode, the width direction size of the mechanism is reduced, and the miniaturization of the dual-power automatic transfer switch is realized.

Description

Technical Field

[0001] This application relates to the field of electrical switch technology, and in particular to a dual-power automatic transfer switch. Background Technology

[0002] The dual-power automatic transfer switch includes a motor, a motor-driven operating mechanism, and normally and standby actuator switches. The operating mechanism includes a mounting bracket and a drive linkage mechanism located on both sides of the motor, one end cooperating with the motor and the other end cooperating with the actuator switch handle. Currently, most automatic transfer switches on the market use gear and rack push-type or lever-type operating mechanisms, but these mechanisms have the following shortcomings: complex structure, high precision requirements for gear and rack transmission, easy slippage, poor reliability, difficult assembly, and large size, which does not conform to the trend of miniaturization in dual-power transfer switches. Summary of the Invention

[0003] In view of this, this application proposes a dual-power automatic transfer switch, which adopts a linkage-driven slider structure to install the commonly used transmission rod and the spare transmission rod in a superimposed manner, thereby reducing the width dimension of the mechanism and achieving miniaturization.

[0004] According to one aspect of this application, a dual-power automatic transfer switch is provided, comprising: a bracket, a motor, a drive rod, a normal transmission rod, and a spare transmission rod; the bracket is a frame structure with a central accommodating space, suitable for placement in the middle of dual power supplies; and a closing limiting hole is provided at the top of the bracket; the motor is disposed in the accommodating space of the bracket; one end of the drive rod is disposed on the output shaft of the motor and can rotate with the output shaft, and the other end of the drive rod is provided with a roller, the roller extending out from the closing limiting hole; the normal transmission rod is rotatably disposed on one side of the bracket, one end being adapted to connect... The control rod is connected to a main power supply, and has a first drive hole at one end, which is fitted onto the roller. A backup drive rod is rotatably mounted on the bracket on the opposite side of the main drive rod. One end is connected to a backup power supply, and the other end has a second drive hole, which is fitted onto the roller. When the roller rotates clockwise to a preset position, it drives the main drive rod to control the main power supply to start, and the backup drive rod remains stationary. When the roller rotates counterclockwise to a preset position, it drives the backup drive rod to control the backup power supply to start, and the main drive rod remains stationary.

[0005] In one possible implementation, the closing limiting hole is arc-shaped; the first driving hole includes a first arc-shaped hole and a first strip-shaped hole that are connected, the first arc-shaped hole matching the shape of the closing limiting hole; the extension direction of the hole at the connection between the first strip-shaped hole and the arc-shaped hole is at a preset angle.

[0006] In one possible implementation, the second drive hole includes a connected second arc-shaped hole and a second strip-shaped hole, the second arc-shaped hole matching the shape of the closing limiting hole; the extension direction of the hole at the connection between the second strip-shaped hole and the arc-shaped hole is at a preset angle.

[0007] In one possible implementation, the commonly used transmission rod and the spare transmission rod have the same structure.

[0008] In one possible implementation, the top of the bracket has a central hole located between the commonly used transmission rod and the spare transmission rod, and the recessed side of the closing restriction hole faces the central hole; the output shaft passes through the central hole.

[0009] In one possible implementation, the top of the bracket has a common drive rod fixing threaded hole and a spare drive rod fixing threaded hole; the common drive rod fixing threaded hole and the spare drive rod fixing threaded hole are symmetrically opened on both sides of the central hole; the common drive rod is rotatably mounted on the common drive rod fixing threaded hole by bolts; the spare drive rod is rotatably mounted on the spare drive rod fixing threaded hole by bolts; the common drive rod has an overall "﹀" plate-like structure, and a common drive rod mounting hole is opened at the bend of the common drive rod, which is rotatably mounted on the common drive rod fixing threaded hole by bolts; one end of the common drive rod is sleeved on the roller; and the other end of the common drive rod is provided with a first rivet.

[0010] In one possible implementation, the first strip hole is connected and communicates with the first arc-shaped hole, the first arc-shaped hole is adjacent to the bend of the commonly used transmission rod, and a preset angle is left between the first strip hole and the first arc-shaped hole; the preset angle is in the range of 90 degrees to 180 degrees.

[0011] In one possible implementation, the arc of the closing limiting orifice is in the range of 90 degrees to 180 degrees.

[0012] In one possible implementation, a common transmission rod bushing is also included; the bracket has two transmission rod mounting holes, symmetrically arranged on both sides of the central hole; the common transmission rod bushing is disposed on the bracket and coaxially arranged with the transmission rod mounting hole, and the common transmission rod bushing is embedded in the transmission rod mounting hole; the common transmission rod bushing has a clearance fit with the common transmission rod fixing threaded hole; a motor mounting post is provided at the top corner of the bracket; a motor mounting hole is provided at the top of the motor; the position of the motor mounting hole matches the position of the motor mounting post, and the motor is fixed on the bracket through the motor mounting post.

[0013] In one possible implementation, the system further includes a base plate, a primary actuator switch, and a backup actuator switch; the primary actuator switch and the backup actuator switch are symmetrically arranged at both ends of the base plate, and the bracket is disposed between the primary actuator switch and the backup actuator switch; a primary actuator switch is provided with a primary actuator slider, which is slidably connected to the primary actuator switch and rotatably connected to the first rivet to control the opening and closing of the primary actuator switch; wherein, the motor drives the drive rod, causing the primary actuator transmission rod to rotate around the primary actuator transmission rod fixing threaded hole, and one end of the primary actuator transmission rod is rotatably connected to the primary actuator slider to control the primary power supply.

[0014] The beneficial effects of the dual-power automatic transfer switch in this application embodiment are as follows: Both the primary drive rod and the backup drive rod are mounted on the rollers of the drive rod. When the drive rod rotates, only the primary drive rod or the backup drive rod rotates with the drive rod. The primary drive rod or the backup drive rod that rotates with the drive rod is connected to the corresponding slider, thereby realizing the switching of the dual-power automatic transfer switch. The primary drive rod, the backup drive rod, and the rollers of the drive rod are reliably interlocked. Furthermore, the superimposed installation of the primary drive rod and the backup drive rod reduces the width dimension of the mechanism, which is beneficial for the miniaturization design of the dual-power transfer switch.

[0015] The following detailed description of exemplary embodiments is based on the accompanying drawings. Attached Figure Description

[0016] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0017] Figure 1 A schematic diagram of the main structure of a dual-power automatic transfer switch according to an embodiment of this application is shown; Figure 2This invention relates to a schematic diagram of the operating mechanism of a dual-power automatic transfer switch according to an embodiment of the present application. Figure 3 An exploded view of the operating mechanism of the dual-power automatic transfer switch according to an embodiment of this application is shown; Figure 4 This is a schematic diagram of the main structure of the backup transmission rod of the dual power automatic transfer switch according to an embodiment of this application, which rotates to a preset position; Figure 5 This is a schematic diagram of the main structure of the dual-power automatic transfer switch according to an embodiment of this application, showing the common transmission rod rotating to a preset position. Detailed Implementation

[0018] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0019] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0022] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0023] Figure 1 A schematic diagram of the main structure according to an embodiment of this application is shown. Figure 1 As shown, the dual-power automatic transfer switch of this application embodiment includes: a bracket 11, a motor 12, a drive rod 13, a normal transmission rod 16, and a spare transmission rod 17. The bracket 11 is a frame structure with a central accommodating space, suitable for placement in the middle of a dual power supply. A closing limiting hole 112 is provided at the top of the bracket 11. The motor 12 is disposed within the accommodating space of the bracket 11. One end of the drive rod 13 is mounted on the output shaft 121 of the motor 12, allowing it to rotate with the output shaft 121. A roller 133 is provided at the other end of the drive rod 13, extending from the closing limiting hole 112. The normal transmission rod 16 is rotatably mounted on one side of the bracket 11, with one end suitable for connecting to and controlling the normal power supply, and the other end provided with a first drive hole 162. A drive hole sleeve 161 is provided on the roller 133. The spare transmission rod 17 is rotatably provided on the bracket 11 on the opposite side of the regular transmission rod 16. One end is suitable for connecting to the control backup power supply, and the other end is provided with a second drive hole 172. The second drive hole 172 is sleeved on the roller 133. When the roller 133 rotates clockwise to the preset position, it can drive the regular transmission rod 16 to control the start of the regular power supply, and the spare transmission rod 17 has no displacement. When the roller 133 rotates counterclockwise to the preset position, it can drive the spare transmission rod 17 to control the start of the backup power supply, and the regular transmission rod 16 has no displacement.

[0024] It should be noted that when the main power supply is started, the preset position to which roller 133 rotates clockwise is the main power closing limit position. When the standby power supply is started, the preset position to which roller 133 rotates counterclockwise is the standby power closing limit position.

[0025] In this specific embodiment, both the commonly used transmission rod 16 and the spare transmission rod 17 are sleeved on the rollers 133 of the drive rod 13. When the drive rod 13 rotates, only the commonly used transmission rod 16 or the spare transmission rod 17 rotates with the drive rod 13. The commonly used transmission rod 16 or the spare transmission rod 17, which rotates with the drive rod 13, is connected to the corresponding slider, thereby realizing the switching of the dual power supply automatic transfer switch. The commonly used transmission rod 16, the spare transmission rod 17, and the rollers 133 of the drive rod 13 are reliably interlocked. The superimposed installation of the commonly used transmission rod 16 and the spare transmission rod 17 reduces the width dimension of the mechanism, which is beneficial for miniaturizing the dual power supply transfer switch.

[0026] The arc of the closing limiting hole 112 is in the range of 90 degrees to 180 degrees, that is, the switching angle between the commonly used transmission rod 16 and the spare transmission rod 17 on one side of the operating mechanism 1 is less than 100 degrees, so as to quickly realize the speed of closing and opening.

[0027] In one specific embodiment, a central hole 116 is provided at the top of the bracket 11. The central hole 116 is located between the commonly used transmission rod 16 and the spare transmission rod 17, and the recessed side of the closing restriction hole 112 faces the central hole 116. The output shaft 121 passes through the central hole 116. The drive rod 13 is located below the bracket 11, and a fixing hole 131 is provided at one end. It is sleeved on the output shaft 121 of the motor 12 and rotates with the rotation of the output shaft 121, driving the commonly used transmission rod 16 and the spare transmission rod 17 to realize the opening and closing of the commonly used execution switch 3 or the spare execution switch 4.

[0028] In one specific embodiment, the top of the bracket 11 is provided with a common transmission rod fixing threaded hole 114 and a spare transmission rod fixing threaded hole 115. The common transmission rod fixing threaded hole 114 and the spare transmission rod fixing threaded hole 115 are symmetrically opened on both sides of the central hole 116. The common transmission rod 16 is rotatably mounted on the common transmission rod fixing threaded hole 114 by bolts, and the spare transmission rod 17 is rotatably mounted on the spare transmission rod fixing threaded hole 115 by bolts.

[0029] Furthermore, in this specific embodiment, the commonly used transmission rod 16 has an overall "﹀" plate-like structure. A commonly used transmission rod mounting hole 163 is provided at the bend of the commonly used transmission rod 16. It is rotatably mounted on the commonly used transmission rod fixing threaded hole 114 by bolts. One end of the commonly used transmission rod 16 is sleeved on the roller 133, and the other end of the commonly used transmission rod 16 is provided with a first rivet 161. The commonly used transmission rod mounting hole 163 at the bend of the commonly used transmission rod 16, rotatably mounted on the commonly used transmission rod fixing threaded hole 114 by bolts, allows the commonly used transmission rod 16 to rotate around the transmission rod fixing threaded hole 114, with a rotation angle less than 100 degrees. When the motor 12 drives the drive rod 13 to rotate, the drive rod 13 drives the rivet 161 on the commonly used transmission rod 16 or the spare transmission rod 17 to rotate, causing the commonly used slider 31 or the spare slider 41 to slide, thereby realizing the opening and closing of the commonly used actuator switch 3 or the spare actuator switch 4.

[0030] Furthermore, in this specific embodiment, the first strip-shaped hole 1622 is connected and communicates with the first arc-shaped hole 1621. The first arc-shaped hole 1621 is adjacent to the bend of the commonly used transmission rod 16, and a preset angle is left between the first strip-shaped hole 1622 and the first arc-shaped hole 1621, the preset angle being in the range of 90 degrees to 180 degrees. The communication between the first strip-shaped hole 1622 and the first arc-shaped hole 1621 allows the roller 133 provided on the drive rod 13 to slide between the first strip-shaped hole 1622 and the first arc-shaped hole 1621. Specifically, the first strip-shaped hole 1622 is adjacent to one end of the commonly used transmission rod 16, the first arc-shaped hole 1621 is adjacent to the bend of the commonly used transmission rod 16, and the preset angle left at the connection between the first strip-shaped hole 1622 and the first arc-shaped hole 1621 is in the range of 90 degrees to 180 degrees, specifically 150 degrees. When the roller 133 of the drive rod 13 is in the double-limit position, that is, the roller 133 is also located at the connection between the first strip hole 1622 and the first arc hole 1621 and the second strip hole 1722 and the second arc hole 1721, the first arc hole 1621 and the second arc hole 1721 are both aligned vertically with the closing limit hole 112.

[0031] When the roller 133 moves from the double-limit position to the normal-use limit position, the roller 133 of the drive rod 13 abuts against the inner wall of the first strip-shaped hole 1622 of the normal-use transmission rod 16, driving the normal-use transmission rod 16 to rotate to the normal-use limit position, thereby closing the normal-use execution switch 3. At this time, since the second arc-shaped hole 1721 is aligned vertically with the closing limit hole 112, the roller 133 slides along the track of the second arc-shaped hole 1721 without contacting the inner wall of the second arc-shaped hole 1721, thereby opening the standby execution switch 4.

[0032] Furthermore, in this specific embodiment, both the commonly used transmission rod 16 and the spare transmission rod 17 are sleeved on the roller 133 at one end of the drive rod 13. When the roller 133 slides on the non-arc-shaped closing restriction hole 112, whether the roller 133 moves from the spare closing restriction position to the commonly used closing restriction position, from the commonly used closing restriction position to the spare restriction position, or from the double-separation restriction position to the commonly used closing restriction position or the spare closing restriction position, the roller 133 can only slide within the track of the arc-shaped hole of the other transmission rod, abutting against and driving the inner wall of the strip hole of one transmission rod. The superposition of the commonly used transmission rod 16, the spare transmission rod 17 and the drive rod 13 can form an interlocking structure, reducing the width dimension of the operating mechanism 1 and achieving overall miniaturization.

[0033] In one specific embodiment, the operating mechanism 1 is further provided with a commonly used transmission rod sleeve 14. The bracket 11 has two transmission rod mounting holes, symmetrically arranged on both sides of the central hole 116. The commonly used transmission rod sleeve 14 is mounted on the bracket 11 and is coaxially arranged with the transmission rod mounting hole. The commonly used transmission rod sleeve 14 is embedded in the transmission rod mounting hole, and has a clearance fit with the commonly used transmission rod fixing threaded hole 114. The commonly used transmission rod sleeve 14 is embedded in the transmission rod mounting hole, and the commonly used transmission rod 16 is rotatably mounted on the transmission rod mounting hole by bolts. The shaft of the commonly used transmission rod sleeve 14 and the commonly used transmission rod mounting hole 163 have a clearance fit to reduce wear between the transmission rod mounting hole and the commonly used transmission rod fixing threaded hole 114.

[0034] In one specific embodiment, a motor mounting post 113 is provided at the top corner of the bracket 11, and a motor mounting hole is provided on the top of the motor 12. The position of the motor mounting hole matches the position of the motor mounting post 113. The motor 12 is fixed to the bracket 11 via the motor mounting post 113. There are four motor mounting posts 113 in total, which are respectively provided at the top corner of the bracket 11, and the top of the motor 12 has a corresponding motor mounting hole, thereby fixing the motor 12 inside the bracket 11.

[0035] The dual-power automatic transfer switch of this embodiment includes: a dual-power automatic transfer switch, a base plate 2, a normal operating switch 3, and a backup operating switch 4. The operating mechanism 1, the normal operating switch 3, and the backup operating switch 4 are all mounted on the base plate 2, with the operating mechanism 1 positioned in the center of the base plate 2. The normal operating switch 3 and the backup operating switch 4 are symmetrically arranged on either side of the operating mechanism 1. The normal operating switch 3 is equipped with a normal operating slider 31, which is slidably connected to the normal operating switch 3. Furthermore, the backup operating switch 4 is equipped with a backup slider 41, which is slidably connected to the backup operating switch 4.

[0036] Furthermore, when the normal operating switch 3 changes from the closed state to the open state, the roller 133 changes from the double-opening limit position to the normal operating closing limit position. At this time, the motor 12 drives the drive rod 13, causing the roller 133 on the drive rod 13 to drive one end of the normal operating transmission rod 16 to rotate around the threaded hole 114 of the normal operating transmission rod. The rivet 161 at one end of the normal operating transmission rod 16 drives the normal operating slider 31 to slide upward on the normal operating switch 3, allowing the normal operating switch 3 to open. At this time, the standby operating switch 4 is still in the closed state. Conversely, when the standby operating switch 4 is opened, the normal operating switch 3 is in the closed state.

[0037] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A dual-power automatic transfer switch, characterized in that, include: Bracket, motor, drive rod, common drive rod and spare drive rod; The bracket is a frame structure with a central accommodating space, suitable for installation in the middle of a dual power supply; and the top of the bracket has a closing restriction hole, which is arc-shaped. The motor is disposed in the accommodating space of the bracket; One end of the drive rod is mounted on the output shaft of the motor and can rotate with the output shaft. The other end of the drive rod is provided with a roller, which extends out from the closing limit hole. The commonly used transmission rod is rotatably mounted on one side of the bracket. One end is used to connect to the control power supply, and the other end is provided with a first drive hole. The first drive hole is sleeved on the roller. The first drive hole includes a first arc-shaped hole and a first strip-shaped hole that are connected. The shape of the first arc-shaped hole matches the shape of the closing restriction hole. The extension direction of the hole at the connection between the first strip-shaped hole and the first arc-shaped hole is at a preset angle. The spare transmission rod is rotatably mounted on the bracket on the opposite side of the commonly used transmission rod. One end is used to connect to the control backup power supply, and the other end is provided with a second drive hole. The second drive hole is sleeved on the roller. The second drive hole includes a second arc-shaped hole and a second strip-shaped hole that are connected. The shape of the second arc-shaped hole matches that of the closing restriction hole. The extension direction of the hole at the connection between the second strip-shaped hole and the second arc-shaped hole is at a preset angle. When the roller rotates clockwise to the preset position, it can drive the commonly used transmission rod to control the start of the commonly used power supply, and the spare transmission rod has no displacement; when the roller rotates counterclockwise to the preset position, it can drive the spare transmission rod to control the start of the spare power supply, and the commonly used transmission rod has no displacement.

2. The dual-power automatic transfer switch according to claim 1, characterized in that, The commonly used transmission rod and the spare transmission rod have the same structure.

3. The dual-power automatic transfer switch according to claim 1, characterized in that, The top of the bracket has a central hole, which is located between the commonly used transmission rod and the spare transmission rod, and the arc-shaped recessed side of the closing restriction hole faces the central hole. The output shaft passes through the central hole.

4. The dual-power automatic transfer switch according to claim 3, characterized in that, The top of the bracket is provided with a common drive rod fixing threaded hole and a spare drive rod fixing threaded hole. The commonly used transmission rod fixing threaded hole and the spare transmission rod fixing threaded hole are symmetrically opened on both sides of the central hole; The commonly used transmission rod is rotatably mounted on the commonly used transmission rod fixing threaded hole by bolts; the spare transmission rod is rotatably mounted on the spare transmission rod fixing threaded hole by bolts. The commonly used transmission rod has an overall plate-like structure resembling a "﹀" shape, and a mounting hole is provided at the bend of the commonly used transmission rod. It is rotatably mounted on the threaded fixing hole of the commonly used transmission rod via bolts. One end of the commonly used transmission rod is provided with a first rivet. The other end of the commonly used transmission rod is sleeved on the roller.

5. The dual-power automatic transfer switch according to claim 1, characterized in that, The first strip hole is connected and communicates with the first arc hole. The first arc hole is close to the bend of the commonly used transmission rod, and a preset angle is left between the first strip hole and the first arc hole. The preset angle is within the range of 90 degrees to 180 degrees.

6. The dual-power automatic transfer switch according to claim 1, characterized in that, The arc of the closing restriction hole is in the range of 90 degrees to 180 degrees.

7. The dual-power automatic transfer switch according to claim 4, characterized in that, It also includes commonly used transmission rod bushings; The bracket has two drive rod mounting holes, which are symmetrically arranged on both sides of the central hole. The commonly used transmission rod bushing is mounted on the bracket, and the commonly used transmission rod bushing is coaxially arranged with the transmission rod mounting hole, and the commonly used transmission rod bushing is embedded in the transmission rod mounting hole; The commonly used transmission rod bushing is clearance-fitted with the commonly used transmission rod fixing threaded hole; A motor mounting post is provided at the top corner of the bracket; The top of the motor has a motor mounting hole; The location of the motor mounting hole matches the location of the motor mounting post, and the motor is fixed on the bracket through the motor mounting post.

8. The dual-power automatic transfer switch according to claim 4, characterized in that, It also includes a base plate, a commonly used actuator switch, and a spare actuator switch; The commonly used execution switch and the standby execution switch are symmetrically arranged at both ends of the base plate, and the bracket is arranged between the commonly used execution switch and the standby execution switch; The commonly used actuator switch is provided with a commonly used slider, which is slidably connected to the commonly used actuator switch and rotatably connected to the first rivet, so as to control the opening and closing of the commonly used actuator switch; The motor drives the drive rod, causing the common transmission rod to rotate around the fixed threaded hole of the common transmission rod. One end of the common transmission rod is rotatably connected to the common slider to control the common power supply.

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