Auxiliary grounding switch for electric cabinet

Abstract

This invention relates to an auxiliary grounding switch for an electrical cabinet, comprising a main shaft, one side of which is mounted on a main shaft mounting plate, and this side of the main shaft is connected to an auxiliary grounding assembly via an intermediate component. The auxiliary grounding assembly includes a base and three auxiliary grounding blades mounted on the base, arranged side-by-side on a grounding blade shaft. Both sides of the grounding blade shaft are movably mounted on the base. The intermediate component includes a vertically arranged main connecting rod, offset between the main shaft mounting plate and the base. One side of the main connecting rod is linked to the main shaft via a driven component, and the other side of the main connecting rod is connected to the grounding blade shaft via a retaining drive component, thereby driving the auxiliary grounding blades to swing. The auxiliary grounding switch of this invention enables synchronous linkage between the auxiliary grounding blades and the main blades, ensuring high safety and reliability in the use of the electrical cabinet.

Description

Technical Field

[0001] This invention relates to the field of electrical cabinets, and in particular to an auxiliary grounding switch for electrical cabinets. Background Technology

[0002] The fuse holder is a key component of the switchgear cabinet, used to install high-voltage fuses to protect electrical equipment such as transformers and motors. The fuse holder is installed inside the switchgear cabinet, and both sides must have reliable grounding devices. After the fuse in the fuse holder blows, both sides of the fuse holder must be reliably grounded for maintenance or replacement. One side of the fuse holder can be reliably grounded through the main grounding switch of the switchgear cabinet. The other side, because the fuse has blown, cannot be connected to the main grounding circuit; therefore, an auxiliary grounding switch device must be installed to work with the main grounding switch to complete the main circuit grounding function of the switchgear cabinet.

[0003] Because existing auxiliary grounding switch devices for combined electrical cabinets require independent operating mechanisms, it is difficult to link the auxiliary grounding switch device mechanism with the main grounding switch and load switch mechanisms, and it is also difficult to form effective timing control. In addition, in order to ensure the electric field design, the auxiliary grounding knife needs to rotate at a large angle, which the current structure cannot stably achieve and maintain. For example, patent CN202816716U mentions a fuse-type auxiliary grounding switch device for combined electrical cabinets. This patent provides a grounding switch method, but this method cannot achieve linkage. Another example is the electrical cabinet with a linkage auxiliary grounding switch mentioned in patent CN218160139U. This patent provides a grounding switch method, but the pull rod in this method is bent multiple times, and its processing technology and strength are not very good. Moreover, the angular rotation of the idle stroke in this patent is included in its total design angle. Therefore, within the same design space, the rotation angle of the auxiliary grounding knife is limited, and timing control cannot be achieved. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an auxiliary grounding switch for electrical cabinets that facilitates linkage between the auxiliary grounding switch and the main grounding switch and load switch mechanism.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: an auxiliary grounding switch for an electrical cabinet, the innovation of which is: including... A main shaft, one side of which is mounted on a main shaft mounting plate, and this side of the main shaft is connected to an auxiliary grounding component through the cooperation of an intermediate component; The auxiliary grounding assembly includes a base and auxiliary grounding switches mounted on the base. There are three auxiliary grounding switches, which are mounted side by side on a grounding switch shaft. The two sides of the grounding switch shaft are movably mounted on the base. The intermediate component includes a vertically arranged main connecting rod, which is offset between the main shaft mounting plate and the base. One side of the main connecting rod is linked to the main rotating shaft through the cooperation of a driven component to achieve linkage, and the other side of the main connecting rod is connected to the grounding blade rotating shaft through the cooperation of a retaining drive component, thereby driving the auxiliary grounding blade to swing. The auxiliary grounding switch switches between four different states by the rotation of the main shaft in conjunction with the driven drive component and the holding drive component: In the first state, the main shaft is in the closed position and the auxiliary grounding switch is in the open position; In the second state, the main shaft rotates to the open position, and the auxiliary grounding switch remains in the open position under the holding effect of the holding drive component, and remains stationary relative to the first state; In the third state, the main shaft rotates to the grounding position and drives the auxiliary grounding switch to rotate at a certain angle through the cooperation of the driven component, but the auxiliary grounding switch does not reach the closing position. In the fourth state, the main shaft remains stationary in the contact position, and the drive component continues to rotate the auxiliary grounding switch until the auxiliary grounding switch reaches the closed contact position, and the auxiliary grounding switch is then held in the closed contact position.

[0006] Furthermore, the driven assembly includes an input crank and a drive crank arm. The input crank is connected to the side end of the main shaft and swings with the rotation of the main shaft. A drive rod is also provided on one side of the input crank. The drive crank arm is hinged to the main shaft mounting plate, and one side of the drive crank arm is hinged to one side of the main connecting rod. The other side of the drive crank arm has a stroke guide groove that cooperates with the drive rod. There is a gap between the drive rod of the input crank and the stroke guide groove of the drive crank arm. The input crank drives the drive rod to swing with the rotation of the main shaft.

[0007] Furthermore, a guide assembly is also provided between the drive crank arm and the main shaft mounting plate.

[0008] Furthermore, the guiding component includes an arc-shaped crank arm guide groove on the drive crank arm, and a guide post extending into the crank arm guide groove and guiding and limiting the crank arm guide groove in the opposite direction on the main shaft mounting plate.

[0009] Furthermore, a torsion spring is provided at the hinge joint between the drive crank arm and the main shaft mounting plate.

[0010] Furthermore, the holding drive assembly includes an upper connecting rod, a lower connecting rod, an output connecting rod, and a tension spring. One side of the output connecting rod is connected to the grounding knife shaft and drives the grounding knife to rotate synchronously. The other side of the output connecting rod is hinged to one side of the lower connecting rod through a first hinge rod. A tension spring is also connected to the first hinge rod, and the other side of the tension spring is connected to the base. The other side of the lower connecting rod is hinged to one side of the upper connecting rod through a second hinge rod. An arc-shaped base crank arm guide groove is also provided on the base to accommodate the second hinge rod. The other side of the upper connecting rod is connected to the other side of the main connecting rod, and the extension force of the tension spring drives the lower connecting rod and the output connecting rod to swing.

[0011] Furthermore, the connection between the main connecting rod and the upper connecting rod is as follows: a hinge shaft is provided at the top of the upper connecting rod, and a waist-shaped hinge hole is opened at the bottom of the main connecting rod to accommodate the hinge shaft and allow it to move up and down. The hinge shaft is inserted into the hinge hole of the main connecting rod to realize the connection between the upper connecting rod and the main connecting rod.

[0012] The advantages of this invention are: the auxiliary grounding switch in this invention can realize the synchronous linkage between the auxiliary grounding knife and the main knife, ensuring high safety and high reliability of the electrical cabinet. Furthermore, through the cooperation of the driven component and the holding drive component, it can form a timing control with the linked main knife, and can form a stable holding state in the initial position and the final position.

[0013] The auxiliary grounding switch of the present invention directly cooperates with the driven drive component and the holding drive component to achieve operation through the bias design of the main connecting rod, thereby enabling the biasing action of the bottom transmission component without bending the main connecting rod.

[0014] This invention can realize the sequential control of the auxiliary grounding switch and the main grounding switch, and can ensure that each component maintains its theoretical position at each stage.

[0015] In this invention, by using the combined use of the drive crank arm and the torsion spring, not only can the main connecting rod and its subordinate components be biased, which is very friendly to the electric field and installation, but also the rotational motion can be converted into linear motion, realizing the angle conversion in space.

[0016] The coordinated use of the upper link, lower link, output link, and tension spring not only increases the rotation angle of the auxiliary grounding knife, but also enables timing control with the main knife, and allows for stable holding at the initial and final positions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the auxiliary grounding switch for the electrical cabinet of the present invention.

[0018] Figure 2This is a schematic diagram of the state of the driven component in the first state in this invention.

[0019] Figure 3 This is a schematic diagram illustrating the state of the driving component in the first state of the present invention.

[0020] Figure 4 This is a schematic diagram of the state of the driven component in the second state in this invention.

[0021] Figure 5 This is a schematic diagram illustrating the state of the driving component in the second state of the present invention.

[0022] Figure 6 This is a schematic diagram of the state of the driven component in the third state in this invention.

[0023] Figure 7 This is a schematic diagram illustrating the state of the driving component in the third state of the present invention.

[0024] Figure 8 This is a schematic diagram of the engagement between the main connecting rod and the upper connecting rod in the third state of the present invention.

[0025] Figure 9 This is a schematic diagram of the state of the driven component in the fourth state of the present invention.

[0026] Figure 10 This is a schematic diagram illustrating the state of the driving component in the fourth state of the present invention.

[0027] Figure 11 This is a schematic diagram of the engagement between the main connecting rod and the upper connecting rod in the fourth state of this invention. Detailed Implementation

[0028] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0029] like Figures 1-11 An auxiliary grounding switch for an electrical cabinet is shown, including: A main rotating shaft 1 is connected to the main blade of the electrical cabinet and is used to drive the main blade to rotate and achieve opening and closing of the circuit breaker. One side of the main rotating shaft 1 is mounted on the main shaft mounting plate 11, and this side of the main rotating shaft 1 is connected to an auxiliary grounding component through an intermediate component. The main rotating shaft 1 and the main shaft mounting plate 11 are movably connected through the cooperation of bearings and bearing seats. In this embodiment, the main rotating shaft 1 and the main shaft mounting plate 11 can also be directly coupled, or other similar rotating parts can be used to achieve free rotation of the main rotating shaft 1 relative to the main shaft mounting plate 11.

[0030] The auxiliary grounding assembly is located below the main rotating shaft 1. The auxiliary grounding assembly includes a base 21 and three auxiliary grounding blades 2 mounted on the base 21. These blades are arranged side-by-side on a grounding blade rotating shaft 22. The two sides of the grounding blade rotating shaft 22 are movably mounted on the base 21 via bearings and can rotate freely relative to the base 21. In this embodiment, the grounding blade rotating shaft 22 and the base 21 can also be directly coupled, or other similar rotating components can be used to achieve free rotation of the grounding blade rotating shaft 22 relative to the base 21.

[0031] The intermediate component includes a main connecting rod 3 vertically disposed between the main spindle mounting plate 11 and the base 21. The main connecting rod 3 is offset between the main spindle mounting plate 11 and the base 21. The upper side of the main connecting rod 3 is connected to the main rotating shaft 1 through the cooperation of a driven component to achieve linkage. The lower side of the main connecting rod 3 is connected to the grounding blade rotating shaft 22 through the cooperation of the drive component, thereby driving the auxiliary grounding blade 2 to swing.

[0032] The driven component includes an input crank 12 and a drive crank arm 13. The input crank 12 is connected to the side end of the main shaft 1 and swings as the main shaft 1 rotates. A drive rod 121 is also provided on one side of the input crank 12. The drive crank arm 13 is hinged to the main shaft mounting plate 11, and one side of the drive crank arm 13 is hinged to one side of the main connecting rod 3. The other side of the drive crank arm 13 has a stroke guide groove 131 that cooperates with the drive rod 121. There is a gap between the drive rod 121 of the input crank 12 and the stroke guide groove 131 of the drive crank arm 13. The input crank 12 drives the drive rod 121 to swing as the main shaft 1 rotates.

[0033] A guide assembly is also provided between the drive crank arm 13 and the main shaft mounting plate 11. The guide assembly consists of an arc-shaped crank arm guide groove 132 on the drive crank arm 13 and a guide post 111 on the main shaft mounting plate 11 that extends into the crank arm guide groove 132 and guides and limits the crank arm guide groove 132 in the opposite direction. The design of the crank arm guide groove 132 and the guide post 111 is to guide and limit the rotation of the drive crank arm 13 when it rotates along the hinge point, ensuring that the drive crank arm 13 can move stably and avoiding deviation, which would affect the smooth grounding of the subsequent auxiliary grounding knife 2.

[0034] A torsion spring is also provided at the hinge point between the drive crank arm 13 and the main shaft mounting plate 11. The torsion spring is designed to apply a certain force to the drive crank arm 13 when it rotates along the hinge point, so that the drive crank arm 13 can rotate more stably. It also facilitates the reset of the drive crank arm 13. Moreover, through the combined use of the drive crank arm 13 and the torsion spring, not only can the main connecting rod 3 and its subordinate components be biased, which is very friendly to the electric field and installation, but also the rotational motion can be converted into linear motion, realizing the angle conversion in space.

[0035] The drive assembly includes an upper connecting rod 4, a lower connecting rod 41, an output connecting rod 42, and a tension spring 43. One side of the output connecting rod 42 is connected to the grounding blade shaft 22 and drives the grounding blade shaft 22 to rotate synchronously. The other side of the output connecting rod 42 is hinged to one side of the lower connecting rod 41 through a first hinge rod. A tension spring 43 is also connected to the first hinge rod. The other side of the tension spring 43 is connected to the base 21, and the connection point between the tension spring 43 and the base 21 is located below the connection point between the output connecting rod 42 and the grounding blade shaft 22. The other side of the lower connecting rod 41 is hinged to one side of the upper connecting rod 4 through a second hinge rod. An arc-shaped base crank arm guide groove 44 is also provided on the base 21 to accommodate the second hinge rod and allow it to move. The other side of the upper connecting rod 4 is hinged to the other side of the main connecting rod 3. The extension and retraction force of the tension spring 43 drives the lower connecting rod 41 and the output connecting rod 42 to swing. The coordinated use of the upper connecting rod 4, the lower connecting rod 41, the output connecting rod 42, and the tension spring 43 not only allows the rotation angle of the auxiliary grounding knife 2 to be further increased, but also enables it to form a timing control with the main knife in linkage, and at the same time enables the auxiliary grounding knife 2 to form a stable holding state in the initial and final positions.

[0036] The connection between the main connecting rod 3 and the upper connecting rod 4 is as follows: a hinge shaft is provided at the top of the upper connecting rod 4, and a waist-shaped hinge hole 31 is opened at the bottom of the main connecting rod 3 to accommodate the hinge shaft and allow it to move up and down. The hinge shaft is inserted into the hinge hole 31 of the main connecting rod 3 to achieve the connection between the upper connecting rod 4 and the main connecting rod 3. The waist-shaped design of the hinge hole 31 allows the hinge shaft to move up and down within a certain range, enabling the upper connecting rod 4 to move up and down relative to the main connecting rod 3. This design prevents the upper connecting rod 4 from moving and causing the main connecting rod 3 to move in the opposite direction when the tension spring 43 pulls the lower connecting rod 41 and the output connecting rod 42, thus preventing the main connecting rod 1 from rotating and disengaging from the contact position. This provides a good foundation for ensuring that the main connecting rod 1 and the auxiliary grounding knife 2 are well maintained in the contact position.

[0037] The auxiliary grounding switch can be switched between four different states by the swing of the drive rod 121 and the extension and retraction of the tension spring 43: First state, such as Figure 2 , Figure 3 As shown, the drive rod 121 is away from the travel guide groove 131, the main shaft 1 is in the closed position, the drive crank arm 13 and the main connecting rod 3 remain stationary under the action of the torsion spring. At this time, the upper side of the crank arm guide groove 132 abuts against the guide column 111, the auxiliary grounding knife 2 is in the open position, and the lower connecting rod 41 remains stationary under the action of the tension spring 43. At this time, the lower connecting rod 41 abuts against the upper end of the base crank arm guide groove 44, which plays a limiting role.

[0038] Second state, such as Figure 4 , Figure 5 As shown, the drive rod 121 just contacts the stroke guide groove 131 and does not drive the drive crank arm 131 to rotate. The input crank 12 completes the idle rotation under the drive of the main shaft 1. The input crank 12 reaches the pre-designed stroke guide groove 131 position. The main shaft 1 is in the open position. The auxiliary grounding knife 2 is still in the open position. Compared with the first state, the auxiliary grounding knife 2 remains stationary under the action of the tension spring 43. The upper connecting rod 4 and the lower connecting rod 41 remain stationary under the action of the tension spring 43. That is, when switching from the first state to the second state, the rotation of the main shaft 1 will not drive the auxiliary grounding knife 2 to perform any action.

[0039] The third state, such as Figure 6 , Figure 7 , Figure 8 As shown, the drive rod 121 is placed in the stroke guide groove 131 and has driven the drive crank arm 131 to rotate. The main shaft 1 is in the contact position. After the main shaft 1 drives the input crank 12 and the drive crank arm 13 to rotate to the corresponding positions, the input crank 12 abuts against the upper part of the stroke guide groove 131. The drive crank arm 13 and the main connecting rod 3 remain stationary under the action of the torsion spring. The auxiliary grounding knife 2 rotates at a certain angle, but has not reached the closing contact position. The main connecting rod 3 drives the drive assembly to move, driving the auxiliary grounding knife 2 to rotate at a certain angle, and at the same time driving the tension spring 43 to pass the dead point. At this time, the hinge shaft on the upper connecting rod 4 is against the upper side of the hinge hole 31 of the main connecting rod 3. Figure 8 The state shown.

[0040] The fourth state, such as Figure 9 , Figure 10 , Figure 11 As shown, the drive rod 121 is placed in the travel guide groove, the main rotating shaft 1 is in the contact position, and the lower connecting rod 41 continues to rotate forward under the action of the tension spring 43, pulling the auxiliary grounding knife 2 to the closed position. At this time, the lower connecting rod abuts against the guide groove 44 of the base crank arm, which plays a limiting role. At the same time, the tension spring 43 also plays a holding role. The auxiliary grounding knife 2 reaches the closed contact position. At this time, the hinge shaft on the upper connecting rod 4 is against the lower side of the hinge hole 31 of the main connecting rod 3, as shown. Figure 11 The state shown.

[0041] When the auxiliary grounding switch of the present invention operates, firstly, the main shaft 1 rotates, driving the input crank 12 to rotate synchronously. As the input crank 12 rotates, the drive rod 121, in conjunction with the stroke guide groove 131, drives the drive crank arm 13 to rotate around the hinge point between the drive crank arm 13 and the main shaft mounting plate 11. The rotation of the drive crank arm 13 drives the main connecting rod 3 to move up and down. Then, the main connecting rod 3 drives the upper connecting rod 4 and the lower connecting rod 41 to move. The lower connecting rod 41 then drives the output connecting rod 42 to move, ultimately achieving the action of the auxiliary grounding knife 2. After the main shaft 1 rotates to the grounding position, the main connecting rod 3 reaches its designed position and remains stationary. At this time, the tension spring 43 has passed its "dead point" and will drive the lower connecting rod 41 to continue rotating forward, causing the auxiliary grounding knife 2 to ground. Figure 10 As shown in the figure, the auxiliary grounding knife 2 is held in place by the tension of the tension spring 43, so that the auxiliary grounding knife 2 can be well held in the grounding position.

[0042] To solve the problem of difficulty in linking the auxiliary grounding switch with the main grounding switch and the load switch mechanism, the present invention installs the input crank 12 on the main rotating shaft 1, forming a linkage control with the main blade. At the same time, through angle design control, during the process of the main blade rotating from the closed position to the open position, the input crank 12 rotates by a corresponding angle during idle travel, without driving the drive crank arm 13 and the auxiliary grounding blade 2 to rotate. That is, during the process of the main blade rotating from the closed position to the open position, the auxiliary grounding blade 2 remains stationary.

[0043] To address the issues of unfavorable installation and unfriendly electric field of the bottom transmission assembly located in the middle, and to avoid the main connecting rod 3 bending and affecting its strength, this invention designs the drive crank arm 13 to rotate around the hinge point. This allows the main connecting rod 3 to be offset to one side when the input crank 12 is in the middle, thanks to the use of the drive crank arm 13.

[0044] To solve the timing control problem, this invention uses the design of the stroke guide groove 131 of the drive crank arm 13 and the synchronous use of the tension spring to ensure that the main blade is grounded first and the auxiliary grounding blade 2 is grounded later. That is, when the main blade rotates from the open position to the grounding position, the input crank 12 rotates synchronously, and the drive crank arm 13 drives the main connecting rod 3 and the holding drive assembly to rotate. At this time, the auxiliary grounding blade 2 rotates through a certain angle, but will not reach the grounding position. The tension spring 43 passes the dead point, and under the action of the tension spring 43, the auxiliary grounding blade 2 is driven to rotate to the grounding position.

[0045] To address the issue of maintaining the auxiliary grounding knife 2 in its initial position, final position, and during movement, this invention employs a linkage design between the tension spring 43 and the torsion spring to ensure that each component maintains its theoretical position at each stage.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An auxiliary grounding switch for an electrical cabinet, characterized in that: include A main shaft, one side of which is mounted on a main shaft mounting plate, and this side of the main shaft is connected to an auxiliary grounding component through the cooperation of an intermediate component; The auxiliary grounding assembly includes a base and auxiliary grounding switches mounted on the base. There are three auxiliary grounding switches, which are mounted side by side on a grounding switch shaft. The two sides of the grounding switch shaft are movably mounted on the base. The intermediate component includes a vertically arranged main connecting rod, which is offset between the main shaft mounting plate and the base. One side of the main connecting rod is linked to the main rotating shaft through the cooperation of a driven component to achieve linkage, and the other side of the main connecting rod is connected to the grounding blade rotating shaft through the cooperation of a retaining drive component, thereby driving the auxiliary grounding blade to swing. The auxiliary grounding switch switches between four different states by the rotation of the main shaft in conjunction with the driven drive component and the holding drive component: In the first state, the main shaft is in the closed position and the auxiliary grounding switch is in the open position; In the second state, the main shaft rotates to the open position, and the auxiliary grounding switch remains in the open position under the holding effect of the holding drive component, and remains stationary relative to the first state; In the third state, the main shaft rotates to the grounding position and drives the auxiliary grounding switch to rotate at a certain angle through the cooperation of the driven component, but the auxiliary grounding switch does not reach the closing position. In the fourth state, the main shaft remains stationary in the contact position, and the drive component continues to rotate the auxiliary grounding switch until the auxiliary grounding switch reaches the closed contact position, and the auxiliary grounding switch is then held in the closed contact position.

2. The auxiliary grounding switch for electrical cabinets according to claim 1, characterized in that: The driven assembly includes an input crank and a drive crank arm. The input crank is connected to the side end of the main shaft and swings with the rotation of the main shaft. A drive rod is also provided on one side of the input crank. The drive crank arm is hinged to the main shaft mounting plate, and one side of the drive crank arm is hinged to one side of the main connecting rod. The other side of the drive crank arm has a stroke guide groove that cooperates with the drive rod. There is a gap between the drive rod of the input crank and the stroke guide groove of the drive crank arm. The input crank drives the drive rod to swing with the rotation of the main shaft.

3. The auxiliary grounding switch for electrical cabinets according to claim 2, characterized in that: A guide assembly is also provided between the drive crank arm and the main shaft mounting plate.

4. The auxiliary grounding switch for electrical cabinets according to claim 3, characterized in that: The guiding component is as follows: an arc-shaped crank arm guide groove is opened on the drive crank arm, and a guide post is provided on the main shaft mounting plate, which extends into the crank arm guide groove and guides and limits the crank arm guide groove in the opposite direction.

5. The auxiliary grounding switch for electrical cabinets according to claim 2, characterized in that: A torsion spring is also provided at the hinge joint between the drive crank arm and the main shaft mounting plate.

6. The auxiliary grounding switch for electrical cabinets according to claim 1, characterized in that: The holding drive assembly includes an upper connecting rod, a lower connecting rod, an output connecting rod, and a tension spring. One side of the output connecting rod is connected to the grounding knife shaft and drives the grounding knife to rotate synchronously. The other side of the output connecting rod is hinged to one side of the lower connecting rod through a first hinge rod. A tension spring is also connected to the first hinge rod, and the other side of the tension spring is connected to the base. The other side of the lower connecting rod is hinged to one side of the upper connecting rod through a second hinge rod. An arc-shaped base crank arm guide groove is also provided on the base to accommodate the second hinge rod. The other side of the upper connecting rod is connected to the other side of the main connecting rod. The extension and contraction force of the tension spring drives the lower connecting rod and the output connecting rod to swing.

7. The auxiliary grounding switch for electrical cabinets according to claim 6, characterized in that: The connection between the main connecting rod and the upper connecting rod is as follows: a hinge shaft is provided at the top of the upper connecting rod, and a waist-shaped hinge hole is opened at the bottom of the main connecting rod to accommodate the hinge shaft and allow it to move up and down. The hinge shaft is inserted into the hinge hole of the main connecting rod to achieve the connection between the upper connecting rod and the main connecting rod.

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