Operating device and electrical cabinet of isolating and earthing switch

Abstract

The present disclosure provides an operating device and electrical cabinet for an isolating and grounding switch. The operating device includes a first operating mechanism, a second operating mechanism, an elastic member, a linkage mechanism, and a retaining member. The first operating mechanism includes a first operating shaft and a first rotating assembly; the second operating mechanism includes a second operating shaft and a second rotating assembly; the elastic member is connected between the first rotating assembly and the second rotating assembly; when the first rotating assembly rotates to a position that triggers the linkage mechanism, the linkage mechanism can be triggered to operate; when the linkage mechanism is triggered, it can drive the retaining member to switch from a blocking position to a tripping position. The operating device of the isolating and grounding switch disclosed in the present disclosure has high operating reliability.

Description

Technical Field

[0001] The present disclosure relates to the field of electrical cabinets, and in particular to an operating device for an isolating grounding switch and an electrical cabinet. Background Art

[0002] As a core component of high-voltage switches, isolating and grounding switches must exhibit excellent reliability. However, the operating mechanisms of conventional isolating and grounding switches are often complex, resulting in poor stability and reliability, which poses a risk to their operational safety. Summary of the Invention

[0003] One object of the present disclosure is to improve the working reliability of an operating device of an isolating grounding switch.

[0004] In order to solve the above technical problems, the present disclosure adopts the following technical solutions:

[0005] In one embodiment, an operating device for an isolating and grounding switch includes:

[0006] A first operating mechanism includes a first operating shaft and a first rotating assembly fixedly mounted on the first operating shaft;

[0007] A second operating mechanism includes a second operating shaft and a second rotating assembly fixedly mounted on the second operating shaft; the second operating mechanism is connected to the isolating and grounding switch;

[0008] an elastic member connected between the first rotating assembly and the second rotating assembly;

[0009] The linkage mechanism is located within the rotation range of the first rotating component and the second rotating component, and can trigger the linkage mechanism to operate when the first rotating component rotates to a position that triggers the linkage mechanism;

[0010] a retaining member connected to the linkage mechanism, and having, within the rotation range of the second rotating assembly, a blocking position for blocking the passage of the second rotating assembly and a tripping position for allowing the passage of the second rotating assembly; and driving the retaining member to switch from the blocking position to the tripping position when the linkage mechanism is triggered;

[0011] When the isolating and earthing switch is in the open state, the second rotating assembly is in the first position and the retaining member is in the blocking position. When the first operating shaft drives the first rotating assembly to rotate along the first clockwise direction, the elastic member is compressed until the first rotating assembly triggers the linkage mechanism to switch the retaining member to the tripped position; the second rotating assembly reaches the second position through the retaining member under the action of the elastic member, so that the isolating and earthing switch is switched to the first closed state.

[0012] In one embodiment, when the linkage mechanism is triggered, the second rotating assembly rotates in the first clockwise direction and keeps triggering the linkage mechanism, so that the retaining member remains in the tripped position until the second rotating assembly rotates to the second position;

[0013] When the first operating shaft drives the first rotating assembly to rotate along the second clockwise direction, the second rotating assembly rotates along the second clockwise direction until the second rotating assembly passes through the retaining member and the second limiting piece is released from contact with the second linkage rod;

[0014] The second rotating assembly reaches the second position through the retaining member under the action of the elastic member, so that the isolating and grounding switch is switched from the first closing state to the opening state.

[0015] In one embodiment, the linkage mechanism includes a four-bar linkage mechanism, which includes a first linkage rod located within the rotation range of the first rotating assembly and a second linkage rod located within the rotation range of the second rotating assembly; the retaining member is fixedly mounted on one side of the second linkage rod;

[0016] When the first rotating assembly contacts the first linkage rod, the linkage mechanism is triggered, and the second linkage rod drives the retaining member to rotate to switch to the tripping position.

[0017] In one embodiment, the first rotating assembly includes a first rotating arm and a first limiting plate, and the first rotating arm and the first limiting plate are both sleeved on the first operating shaft;

[0018] When the first limiting piece includes a first body and a first limiting flange protruding from the first body, when the first limiting flange contacts the first linkage rod, the linkage mechanism is triggered.

[0019] In one embodiment, an end surface of the first limiting flange is used to contact the first linkage rod, and the end surface of the first limiting flange is in an arc shape.

[0020] In one embodiment, the operating device of the isolating and grounding switch further includes a first limiting column provided corresponding to the first rotating arm;

[0021] When the first limiting piece triggers the first linkage rod, the wall surface of the first limiting column abuts against the first rotating arm to limit the first rotating arm from continuing to rotate along the first clockwise direction.

[0022] In one embodiment, the operating device of the isolating and grounding switch further includes a second limiting column provided corresponding to the second rotating assembly;

[0023] When the second rotating assembly rotates to the second position, the second limiting post limits the second rotating assembly to limit the second rotating assembly from continuing to rotate along the first clockwise direction.

[0024] In one embodiment, the second rotating assembly includes a second rotating arm and a second limiting plate, and the second rotating arm and the second limiting plate are both sleeved on the second operating shaft;

[0025] When the second limiting piece includes a second body and a second limiting protrusion protruding from the second body, when the linkage mechanism is triggered, the second limiting protrusion contacts the second linkage rod to maintain the triggered state of the linkage mechanism.

[0026] In one embodiment, the second rotating arm includes a first branch segment and a second branch segment arranged at an angle, and an end portion of the first branch segment is connected to the elastic member;

[0027] The retaining member is arranged corresponding to the second branch segment.

[0028] In one embodiment, an end surface of the second limiting flange is used to contact the second linkage rod, and the end surface of the second limiting flange is arc-shaped.

[0029] In one embodiment, the retaining member is columnar, and is provided with a release notch for the second rotating arm to pass through;

[0030] When the holding member is in a blocking state, the wall surface of the holding member corresponds to the second rotating arm so as to limit the position by abutting against the second rotating arm;

[0031] When the retaining member is in the tripping position, the tripping notch of the retaining member corresponds to the second rotating arm, so that the second rotating arm can pass through the retaining member.

[0032] In one embodiment, the operating device of the isolating and grounding switch further includes a reset elastic member and a column; one end of the reset elastic member is fixed to the column, and the other end is connected to the first linkage rod or the second linkage rod;

[0033] When the second rotating arm rotates along the second clockwise direction to disengage the second limiting flange from the second linkage rod, the linkage assembly returns to its initial state under the action of the reset elastic member.

[0034] In one embodiment, the operating device of the isolating and grounding switch further includes a third limiting column; the third limiting column is arranged corresponding to the first rotating arm;

[0035] When the second operating shaft drives the second rotating arm to rotate from the first position in the second clockwise direction, the wall surface of the third limiting column abuts against the first rotating arm to limit the first rotating arm from rotating in the second clockwise direction, and the elastic member is gradually compressed until the second rotating arm rotates to the inflection point;

[0036] The second rotating arm continues to rotate along the second clockwise direction from the inflection point position, and the elastic member releases its elasticity to push the second rotating arm to continue to rotate along the second clockwise direction to reach a third position, so that the isolating grounding switch is switched from the open state to the second closed state.

[0037] In one embodiment, the operating device of the isolating and grounding switch further includes a fourth limiting post; the fourth limiting post is arranged corresponding to the second rotating arm;

[0038] When the second rotating arm rotates to the third position, the wall surface of the fourth limiting column contacts the second rotating arm to limit the second rotating arm from continuing to rotate along the second clockwise direction.

[0039] In one embodiment, when the second rotating arm rotates clockwise from the third position, the wall surface of the third limiting column abuts against the first rotating arm to limit the first rotating arm from rotating in the second clockwise direction, thereby gradually compressing the elastic member until the second rotating arm rotates to the inflection point.

[0040] The second rotating arm continues to rotate along the first clockwise direction from the inflection point position, and the elastic member releases its elasticity to push the second rotating arm to continue to rotate along the first clockwise direction back to the first position, so that the isolating grounding switch is switched from the second closed state to the open state.

[0041] In one embodiment, the elastic member is a spring, and the operating device of the isolating and grounding switch further includes a spring fixing rod, a fixing member, and a sliding shaft;

[0042] The spring is sleeved outside the spring fixing rod; both ends of the spring fixing rod are provided with slide rails and mounting holes along the extension direction of the spring;

[0043] There are two first rotating arms, and the ends of the two first rotating arms extend to the end of the elastic member. The first fixing member is inserted into the mounting hole, and the two ends are respectively connected to the two first rotating arms.

[0044] There are two second rotating arms, and ends of the two second rotating arms extend to both sides of the slide rail. The sliding shaft passes through the slide rail, and two ends are respectively connected to the two second rotating arms.

[0045] In one embodiment, the operating device of the isolating and grounding switch further comprises a first mounting plate and a second mounting plate spaced apart;

[0046] The first operating shaft and the second operating shaft pass through the first mounting plate and the second mounting plate in sequence; the first rotating arm and the second rotating arm are both located between the first mounting plate and the second mounting plate, and the first limiting plate, the grounding linkage rod, and the isolation linkage rod are all located on the side of the first mounting plate away from the first rotating arm.

[0047] In one embodiment, the first operating shaft is a grounding operating shaft, and the second operating shaft is an isolation operating shaft;

[0048] The first closing state is a grounding closing state, and the second closing state is an isolation closing state.

[0049] In the present disclosure, since the second rotating arm drives the rotation of the isolating and earthing switch, this embodiment provides a retaining member to keep the second rotating arm stationary during the closing preparation process to ensure the normal working state of the isolating and earthing switch. When the spring energy storage is completed, the retaining member is adjusted to the tripping position under the triggering of the first limit plate, so that the second rotating arm drives the knife switch to quickly switch to the earthing and closing state, so that the closing process is completed quickly and stably. Therefore, the embodiment of the present disclosure has high working performance stability and reliability.

[0050] Furthermore, the operating mechanism disclosed herein has a small size and high reliability, and can effectively reduce the manufacturing and installation costs of the three-station mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a structural schematic diagram of an embodiment of an operating device for an isolating and grounding switch disclosed in the present invention;

[0052] Figure 2 yes Figure 1 The structural diagram of the first mounting plate is hidden in FIG;

[0053] Figure 3 yes Figure 1 Side view of;

[0054] Figure 4 It is a structural diagram of the linkage mechanism and the retaining member;

[0055] Figure 5 yes Figure 1 A partial structural diagram of the first operating mechanism and the second operating mechanism;

[0056] Figure 6 is a position state diagram corresponding to the operating device of the isolating and grounding switch of the present disclosure when the isolating and grounding switch is in the open state;

[0057] Figure 7 is a position state diagram corresponding to the operating device of the isolating and grounding switch of the present disclosure when the isolating and grounding switch is in the first closing state;

[0058] Figure 8 is a position state diagram corresponding to the operating device of the isolating and grounding switch of the present disclosure when the second rotating arm rotates to the inflection point position;

[0059] Figure 9 This is a position state diagram corresponding to the operating device of the isolating and grounding switch disclosed herein when the isolating and grounding switch is in the second closing state.

[0060] The following are the descriptions of the reference numerals:

[0061] 11. First operating shaft; 12. First rotating assembly; 121. First rotating arm; 122. First limiting plate; 1221. First limiting flange; 21. Second operating shaft; 22. Second rotating assembly; 221. Second rotating arm; 222. Second limiting plate; 2221. Second limiting flange; 3. Linkage mechanism; 31. First linkage rod; 32. Second linkage rod; 33. Connecting rod;

[0062] 4. Retaining element; 41. Tripping notch;

[0063] 51. Elastic member; 52. Spring fixing rod; 521. Slide rail; 61. Reset elastic member; 62. Column;

[0064] 71. First limiting column; 72. Second limiting column; 73. Third limiting column; 74. Fourth limiting column;

[0065] 81. First mounting plate; 82. Second mounting plate. DETAILED DESCRIPTION

[0066] Although the present disclosure may be readily embodied in different forms of embodiments, only some of the specific embodiments are shown in the drawings and will be described in detail in this specification, and it should be understood that this description should be regarded as an exemplary illustration of the principles of the disclosure and is not intended to limit the disclosure to that described herein.

[0067] Thus, a feature indicated in this specification will be used to illustrate one of the features of an embodiment of the present disclosure, rather than implying that each embodiment of the present disclosure must have the described feature. In addition, it should be noted that this specification describes many features. Although certain features can be combined together to illustrate possible system designs, these features can also be used in other combinations that are not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0068] In the embodiments shown in the accompanying drawings, directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of various elements of the present disclosure are not absolute but relative. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the descriptions of the positions of these elements change, the directional indications will also change accordingly.

[0069] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that the description of this disclosure will be more comprehensive and complete, and will fully convey the concepts of the example embodiments to those skilled in the art. The accompanying drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. Identical reference numerals in the figures indicate identical or similar parts, and thus repeated descriptions thereof will be omitted.

[0070] The preferred embodiments of the present disclosure are further described in detail below in conjunction with the accompanying drawings.

[0071] This disclosure provides an operating device for an isolating and grounding switch, used to operate the isolating and grounding switch. The isolating and grounding switch has three operating states: open, grounding-closed, and isolation-closed. Typically, the isolating and grounding switch switches between these three operating states using a knife switch. The operating device of this disclosure is connected to the knife switch to control the operating state of the isolating and grounding switch by controlling the knife switch.

[0072] In one embodiment, see Figures 1 to 3 The operating device of the isolating earthing switch comprises:

[0073] The first operating mechanism includes a first operating shaft 11 and a first rotating assembly 12 fixedly mounted on the first operating shaft 11;

[0074] The second operating mechanism includes a second operating shaft 21 and a second rotating assembly 22 fixedly mounted on the second operating shaft 21; the second operating mechanism is connected to the isolating and grounding switch;

[0075] an elastic member 51 connected between the first rotating assembly 12 and the second rotating assembly 22;

[0076] The linkage mechanism 3 is located within the rotation range of the first rotating component 12 and the second rotating component 22. When the first rotating component 12 rotates to the position of triggering the linkage mechanism 3, the linkage mechanism 3 can be triggered to operate;

[0077] A retaining member 4 is connected to the linkage mechanism 3, and within the rotation range of the second rotating assembly 22, the retaining member 4 has a blocking position for blocking the passage of the second rotating assembly 22, and a tripping position for allowing the passage of the second rotating assembly 22; when the linkage mechanism 3 is triggered, the retaining member 4 can be driven to switch from the blocking position to the tripping position;

[0078] When the isolating and earthing switch is in the open state, the second rotating assembly 22 is in the first position and the retaining member 4 is in the blocking position. When the first operating shaft 11 drives the first rotating assembly 12 to rotate along the first clockwise direction, the elastic member 51 is compressed until the first rotating assembly 12 triggers the linkage mechanism 3 to operate, thereby switching the retaining member 4 to the tripping position; the second rotating assembly 22 reaches the second position through the retaining member 4 under the action of the elastic member 51, so that the isolating and earthing switch is switched to the first closed state.

[0079] When the linkage mechanism 3 is triggered, the second rotating component 22 rotates in the first clockwise direction and keeps triggering the linkage mechanism 3, so that the retaining member 4 remains in the tripped position until the second rotating component 22 rotates to the second position;

[0080] When the first operating shaft 11 drives the first rotating assembly 12 to rotate along the second clockwise direction, the second rotating assembly 22 rotates along the second clockwise direction until the second rotating assembly 22 passes through the retaining member 4 and the second limiting piece 222 is released from contact with the second linkage rod 32.

[0081] The second rotating assembly 22 reaches the second position through the retaining member 4 under the action of the elastic member 51 , so that the isolating and grounding switch is switched from the first closed state to the open state.

[0082] In one example, the first operating mechanism is configured as a grounding operating assembly, and the second operating mechanism is configured as an isolation operating assembly. The first operating shaft 11 corresponds to the grounding operating shaft, and the second operating shaft 21 corresponds to the isolation operating shaft. The first closing state is the grounding closing state. Alternatively, the second operating mechanism may be configured as a grounding operating assembly, and the first operating mechanism may be configured as an isolation operating assembly.

[0083] The operating device of the isolating and earthing switch disclosed in the present invention may further include a first mounting plate 81 and a second mounting plate 82 that are spaced apart. The first mounting plate 81 and the second mounting plate 82 may be arranged in parallel. The first operating shaft 11 and the second operating shaft 21 both pass through the first mounting plate 81 and the second mounting plate 82 in sequence. The extension directions of the first operating shaft 11 and the second operating shaft 21 are roughly parallel. One end of the first operating shaft 11 and one end of the second operating shaft 21 may protrude from the first mounting plate 81 for operation. The other end of the second operating shaft 21 protrudes from the second mounting plate 82 for connection to the knife switch of the isolating and earthing switch. Therefore, it can be understood that when the second operating shaft 21 rotates, it can synchronously drive the knife switch of the isolating and earthing switch to rotate, thereby switching the working state of the isolating and earthing switch.

[0084] The first operating shaft 11 and the second operating shaft 21 can be connected to an electric device to electrically control the rotation of the first operating shaft 11 and the second operating shaft 21 .

[0085] A receiving space is formed between the first mounting plate 81 and the second mounting plate 82 , and components such as the first rotating arm 121 , the second rotating arm 221 and the elastic member 51 can be received in the receiving space to improve the working stability of the device.

[0086] See also Figure 4 In one embodiment, the linkage mechanism 3 comprises a four-bar linkage, which can be disposed on a side of the first mounting plate 81 facing away from the second mounting plate 82. The four-bar linkage includes a first linkage rod 31 located within the rotation range of the first rotating assembly 12, a second linkage rod 32 located within the rotation range of the second rotating assembly 22, and a connecting rod 33 connected between the first linkage rod 31 and the second linkage rod 32. The retaining member 4 is fixedly mounted on one side of the second linkage rod 32.

[0087] The four-bar linkage has an initial state and a triggered state. In the initial state, the first linkage rod 31 and the second linkage rod 32 are approximately perpendicular to the connecting rod 33. In the triggered state, the first linkage rod 31 or the second linkage rod 32 is pushed and deflected to one side. At this time, the angle between the first linkage rod 31, the second linkage rod 32 and the connecting rod 33 is less than 90°.

[0088] As shown in the figure, the first linkage rod 31 is located to the left of the first operating shaft 11, and the second linkage rod 32 is located to the left of the second operating shaft 21. When the first rotating assembly 12 rotates clockwise to a position where it contacts the first linkage rod 31, the first linkage rod 31 is pushed to the left, and the second linkage rod 32 is simultaneously pushed to the left.

[0089] In one embodiment, the linkage mechanism 3 also includes a reset elastic member 5161 and a column 62; one end of the reset elastic member 5161 is fixed on the column 62, and the other end is connected to the first linkage rod 31 or the second linkage rod 31; when the linkage mechanism 3 is in the initial state, the reset elastic member 5161 is in a natural state, and when the linkage mechanism 3 is in the triggered state, the reset elastic member 5161 is in a stretched or compressed state, which can be specifically set in combination with the offset direction when the linkage structure is triggered.

[0090] When the second rotating arm 221 rotates along the second clockwise direction to disengage the second limiting flange 2221 from the second linkage rod 32 , the second linkage rod 32 and the first linkage rod 31 return to their initial state under the action of the reset elastic member 5161 .

[0091] It is understandable that the linkage mechanism 3 is not limited to a four-bar linkage mechanism, and any linkage mechanism can be used as long as it can enable the first linkage rod 31 and the second linkage rod 32 to achieve synchronous movement.

[0092] In one embodiment, the retaining member 4 is connected to one side of the second linkage rod 32 , and a through hole for the retaining member 4 to pass through is opened on the first mounting plate 81 , and the retaining member 4 extends between the first mounting plate 81 and the second mounting plate 82 .

[0093] The retaining member 4 is columnar and is provided with a disengaging notch 41 for the second rotating arm 221 to pass through; when the retaining member 4 is in a blocking state, the wall surface of the retaining member 4 abuts against the second rotating component 22; when the retaining member 4 is in a disengaging position, the disengaging notch 41 of the retaining member 4 corresponds to the second rotating component 22, so that the second rotating component 22 can pass through the retaining member 4.

[0094] See also Figure 5 In one embodiment, the first rotating assembly 12 includes a first rotating arm 121 and a first limiting piece 122, both of which are sleeved on the first operating shaft 11; the first limiting piece 122 includes a first body and a first limiting flange 1221 protruding from the first body, and when the first limiting flange 1221 contacts the first linkage rod 31, the linkage mechanism 3 is triggered.

[0095] The first operating shaft 11 can drive the first rotating arm 121 and the first limiting plate 122 to rotate synchronously. In one example, the first rotating arm 121 is located between the first mounting plate 81 and the second mounting plate 82, and the first limiting plate 122 is located on the side of the first mounting plate 81 facing away from the second mounting plate 82, thereby being located on the same side of the first mounting plate 81 as the linkage mechanism 3.

[0096] In one embodiment, the end surface of the first limiting flange 1221 is configured to contact the first linkage rod 31. The end surface of the first limiting flange 1221 is arc-shaped. Therefore, when the first limiting flange 1221 contacts the first linkage rod 31, even if the first limiting piece 122 is still rotating, the first linkage rod 31 can remain stable in the offset position, thereby ensuring that the retaining member 4 is stably in the release position.

[0097] In one embodiment, in order to ensure the safety of closing the circuit breaker, the operating device of the isolating and grounding switch also includes a first limiting column 71 arranged corresponding to the first rotating arm 121; when the first limiting plate 122 triggers the first linkage rod 31, the wall surface of the first limiting column 71 abuts against the first rotating arm 121 to limit the first rotating arm 121 from continuing to rotate along the first clockwise direction.

[0098] The first limiting column 71 can be disposed on the first mounting plate 81 or the second mounting plate 82 and stand upright between the first mounting plate 81 and the second mounting plate 82 .

[0099] In one example, the first rotating arm 121 is sleeved outside the first rotating arm 121 , so that a first end of the first rotating arm 121 is connected to the elastic member 51 , and the other end is used to abut against the first limiting column 71 .

[0100] In one embodiment, the second rotating component 22 includes a second rotating arm 221 and a second limiting plate 222, and the second rotating arm 221 and the second limiting plate 222 are both mounted on the second operating shaft 21; when the second limiting plate 222 includes a second body and a second limiting flange 2221 protruding from the second body, when the linkage mechanism 3 is triggered, the second limiting protrusion contacts the second linkage rod 32 to maintain the triggered state of the linkage mechanism 3.

[0101] In one embodiment, the second rotating arm 221 includes a first branch and a second branch arranged at an angle. The end of the first branch is connected to the elastic member 51. The retaining member 4 is disposed corresponding to the second branch. Specifically, the retaining member 4 abuts against the second branch to position the second rotating assembly 22. The retaining member 4 allows the second branch to pass through, thereby allowing the second rotating assembly 22 to pass through the retaining member 4.

[0102] In one example, the retaining member 4 is columnar, and a tripping notch 41 is provided on the retaining member 4 for the second rotating arm 221 to pass through; when the retaining member 4 is in a blocking state, the wall surface of the retaining member 4 corresponds to the second rotating arm 221, so as to limit the second rotating arm 221 by resisting; when the retaining member 4 is in a tripping position, the tripping notch 41 of the retaining member 4 corresponds to the second rotating arm 221, so as to allow the second rotating arm 221 to pass through the retaining member 4.

[0103] Of course, the retaining member 4 may also be in a columnar shape with a blocking piece, so as to limit the rotation of the second rotating arm 221 through the blocking piece.

[0104] In one embodiment, the end surface of the second limiting flange 2221 is configured to contact the second linkage rod 31. The end surface of the second limiting flange 2221 is arc-shaped. Therefore, when the second limiting flange 2221 contacts the second linkage rod 32, even if the second limiting piece 222 is still rotating, the second linkage rod 32 can remain stable in the offset position, thereby ensuring that the retaining member 4 is stably in the release position.

[0105] Furthermore, the isolating grounding switch also has a second closing state. The second closing state can be a contact closing state. It is understood that the grounding closing state and the contact closing state corresponding to the first closing state and the second closing state of the present disclosure are interchangeable.

[0106] Corresponding to the scheme of the operating device controlling the isolating and earthing switch to switch from the open state to the second closed state, in order to improve the stability of operation, in one embodiment, the operating device of the isolating and earthing switch further includes a third limiting post 73 ; the third limiting post 73 is provided corresponding to the first rotating arm 121 .

[0107] When the second operating shaft 21 drives the second rotating arm 221 to rotate from the first position along the second clockwise direction, the wall surface of the third limiting column 73 abuts against the first rotating arm 121 to limit the first rotating arm 121 from rotating along the second clockwise direction, and the elastic member 51 is gradually compressed until the second rotating arm 221 rotates to the inflection point position; the second rotating arm 221 continues to rotate along the second clockwise direction from the inflection point position, and the elastic member 51 releases its elasticity to push the second rotating arm 221 to continue rotating along the second clockwise direction to reach the third position, so that the isolating grounding switch is switched from the opening state to the second closing state.

[0108] Corresponding to the solution of the operating device controlling the isolating and earthing switch to switch from the second closing state to the opening state, in one embodiment, the operating device of the isolating and earthing switch further comprises a fourth limiting post 74 ; the fourth limiting post 74 is provided corresponding to the second rotating arm 221 .

[0109] When the second rotating arm 221 rotates to the third position, the wall surface of the fourth limiting column 74 contacts the second rotating arm 221 to limit the second rotating arm 221 from continuing to rotate along the second clockwise direction.

[0110] In one embodiment, the elastic member 51 is a spring, and the operating device of the isolating and grounding switch further includes a spring fixing rod 52, a fixing member, and a sliding shaft; the spring is sleeved outside the spring fixing rod 52; both ends of the spring fixing rod 52 are provided with sliding rails 521 and mounting holes along the extension direction of the spring; there are two first rotating arms 121, and the ends of the two first rotating arms 121 extend to the ends of the elastic member 51, the first fixing member is passed through the mounting hole, and the two ends are respectively connected to the two first rotating arms 121; there are two second rotating arms 221, and the ends of the two second rotating arms 221 extend to both sides of the sliding rail 521, the sliding shaft is passed through the sliding rail 521, and the two ends are respectively connected to the two second rotating arms 221.

[0111] This embodiment achieves that when the spring is compressed, the spring can stably slide along the spring fixing rod 52 through the cooperation of the sliding shaft, the spring fixing rod 52, the two first rotating arms 121, and the two second rotating arms 221, thereby improving the sliding stability of the spring and further improving the working performance stability of the device.

[0112] The following is an overall description of how the operating device of this embodiment operates the isolating grounding switch from the open state to the grounding closed state. Figure 6 The orientation in is the reference.

[0113] See also Figure 6In one embodiment, when the isolating and grounding switch is in the open state, the first rotating arm 121 and the second rotating arm 221 are both tilted to a certain extent, and the second rotating arm 221 is in the first position; the linkage mechanism 3 is in the initial state, so the retaining member 4 is in the blocking position, and the second rotating arm 221 is restricted from rotating in the clockwise direction. By rotating the first operating shaft 11 clockwise, the first rotating arm 121 rotates clockwise to compress the elastic member 51 until the first limiting flange 1221 contacts and pushes the first linkage rod 31 to trigger the linkage mechanism 3. The first linkage rod 31 is pushed and deflected, and the second linkage rod 32 moves synchronously to the deflected state, so that the retaining member 4 is transferred to the tripped position, and the second rotating arm 221 can pass through the tripping notch 41 of the retaining member 4 and continue to move clockwise. At this point, the first rotating arm 121 contacts the first limiting post 71 and stops moving. The second limiting flange 2221 of the second rotating assembly 22 remains in contact with the second linkage rod 32, keeping the second linkage rod 32 offset, thereby maintaining the retaining member 4 in the tripped position. The compressed elastic member 51 rapidly propels the second rotating arm 221 clockwise to the second position, thereby quickly completing the grounding closing action of the isolating grounding switch. When the second rotating arm 221 reaches the second position, the first branch of the second rotating arm 221 contacts or abuts the second limiting post 72.

[0114] It can be understood that since the second rotating arm 221 drives the rotation of the isolating earthing switch, this embodiment sets a retaining member 4 to keep the second rotating arm 221 fixed during the preparation for closing the switch to ensure the normal working state of the isolating earthing switch. When the spring energy storage is completed, the retaining member 4 is adjusted to the tripping position under the triggering of the first limit plate 122, so that the second rotating arm 221 drives the knife switch to quickly switch to the earthing closing state, so that the closing process is completed quickly and stably. Therefore, the embodiment of the present disclosure has higher working performance stability and reliability.

[0115] See also Figure 7 The following is an overall description of how the operating device of this embodiment is used to operate the isolating grounding switch from the grounding closed state to the open state. Figure 7 The orientation in is the reference.

[0116] As can be seen from the above embodiment, when the isolating and earthing switch is in the earthing state, the retaining member 4 is still in the tripped position. When the isolating and earthing switch begins to open, the first operating shaft 11 rotates counterclockwise, and the first rotating arm 121 rotates counterclockwise synchronously, driving the second rotating arm 221 to rotate counterclockwise. Since the retaining member 4 is in the tripped position, the second rotating arm 221 can smoothly pass through the retaining member 4 and return to the first position, switching the isolating and earthing switch to the open state.

[0117] Among them, after the second rotating arm 221 successfully passes through the retaining member 4, the second limiting flange 2221 also rotates to a position where it does not contact the second linkage rod 32. Therefore, the second linkage rod 32 and the first linkage rod 31 return to the reset state under the action of the reset elastic member 5161.

[0118] The technical solution of this embodiment is to ensure that the retaining member 4 is still in the tripped position when the isolating grounding switch is in the grounded closed state, so as to ensure that the isolating grounding switch can be safely and reliably switched to the open state at any time, thereby improving the timeliness of opening the isolating grounding switch when a fault occurs suddenly, and ensuring the working safety of the isolating grounding switch.

[0119] See also Figure 8 and Figure 9 The following is an overall description of how the operating device of this embodiment is used to operate the isolating grounding switch from the open state to the contact closed state. Figure 8 and Figure 9 The orientation in is the reference.

[0120] In one embodiment, when the isolating grounding switch is in the open state, the first rotating arm 121 and the second rotating arm 221 are both tilted to a certain extent, and the second rotating arm 221 is in the first position; the linkage mechanism 3 is in the initial state, and therefore the retaining member 4 is in the blocking position. When performing a contact closing operation, by rotating the second operating shaft 21 counterclockwise, since the retaining member 4 is located to the left of the second operating shaft 21 clockwise, the retaining member 4 does not interfere with the counterclockwise rotation of the second operating shaft 21. When the second rotating arm 221 rotates counterclockwise, the first rotating arm 121 rotates counterclockwise synchronously. When the first rotating arm 121 rotates to the fourth limit column 74, it cannot continue to rotate counterclockwise. At this time, as the second rotating arm 221 continues to rotate, the elastic member 51 is continuously compressed.

[0121] It is understood that, because the second rotating arm 221 has an arc-shaped rotation trajectory, the distance between the second rotating arm 221 and the first rotating arm 121 progresses from large to small and then from small to large. The position where the distance is minimum corresponds to the inflection point, at which the spring is at an inflection point between compression and release. The second rotating arm 221 continues to rotate in the second clockwise direction from the inflection point, and the elastic member 51 begins to release its elastic force, pushing the second rotating arm 221 to rapidly rotate in the second clockwise direction to reach the third position, thereby switching the isolating grounding switch from the open state to the second closed state; and the second rotating arm 221 will not continue to rotate counterclockwise due to interference from the fourth limit member.

[0122] The following is an overall description of how the operating device of this embodiment operates the isolating grounding switch from the contact closing state to the opening state. Figure 9 The orientation in is the reference.

[0123] When the isolating and grounding switch is in the contact-closed state, the second rotating arm 221 is in the third position. When the second operating shaft 21 is rotated clockwise, the second rotating arm 221 rotates counterclockwise. However, the first rotating arm 121 is prevented from synchronously rotating clockwise due to the fourth stopper. As the second rotating arm 221 continues to rotate, the elastic member 51 is continuously compressed until the second rotating arm 221 reaches the inflection point.

[0124] The second rotating arm 221 continues to rotate clockwise from the inflection point position, and the elastic member 51 releases its elasticity to push the second rotating arm 221 to continue rotating in the clockwise direction to reach the first position, so that the isolating grounding switch switches from the grounding closed state to the open state.

[0125] This disclosure also provides an electrical cabinet comprising a cabinet body, an isolating and grounding switch, and an operating device for the isolating and grounding switch; the isolating and grounding switch and the operating device for the isolating and grounding switch are both mounted within the cabinet body. A second operating mechanism of the isolating and grounding switch operating device is connected to a knife switch of the isolating and grounding switch. Specifically, a second operating shaft of the second operating mechanism can be connected to the isolating and grounding switch.

[0126] While the present disclosure has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary rather than restrictive. Since the present disclosure can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. Therefore, all changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. An operating device for an isolating and grounding switch, characterized in that: include: A first operating mechanism includes a first operating shaft and a first rotating assembly fixedly mounted on the first operating shaft; A second operating mechanism includes a second operating shaft and a second rotating assembly fixedly mounted on the second operating shaft; the second operating mechanism is connected to the isolating and grounding switch; an elastic member connected between the first rotating assembly and the second rotating assembly; The linkage mechanism is located within the rotation range of the first rotating component and the second rotating component, and can trigger the linkage mechanism to operate when the first rotating component rotates to a position that triggers the linkage mechanism; a retaining member connected to the linkage mechanism, wherein within the rotation range of the second rotating assembly, the retaining member has a blocking position for blocking the passage of the second rotating assembly and a tripping position for allowing the passage of the second rotating assembly; When the linkage mechanism is triggered, it can drive the retaining member to switch from the blocking position to the tripping position; When the isolating and earthing switch is in the open state, the second rotating assembly is in the first position and the retaining member is in the blocking position. When the first operating shaft drives the first rotating assembly to rotate in the first clockwise direction, the elastic member is compressed until the first rotating assembly triggers the linkage mechanism to switch the retaining member to the tripped position. Under the action of the elastic member, the second rotating assembly reaches the second position through the retaining member, so that the isolating and earthing switch is switched to the first closed state. Wherein, the linkage mechanism includes a four-bar linkage mechanism, which includes a first linkage rod located within the rotation range of the first rotating assembly and a second linkage rod located within the rotation range of the second rotating assembly; the retaining member is fixedly mounted on one side of the second linkage rod; When the first rotating assembly contacts the first linkage rod, the linkage mechanism is triggered, and the second linkage rod drives the retaining member to rotate to switch to the tripping position; The second rotating assembly includes a second rotating arm and a second limiting plate, and the second rotating arm and the second limiting plate are both sleeved on the second operating shaft; The second rotating arm includes a first branch segment and a second branch segment arranged at an angle, the end of the first branch segment is connected to the elastic member; the retaining member is arranged corresponding to the second branch segment.

2. The operating device of the isolating and grounding switch according to claim 1, characterized in that: When the linkage mechanism is triggered, the second rotating assembly rotates in the first clockwise direction and keeps triggering the linkage mechanism, so that the retaining member remains in the tripped position until the second rotating assembly rotates to the second position; When the first operating shaft drives the first rotating assembly to rotate along the second clockwise direction, the second rotating assembly rotates along the second clockwise direction until the second rotating assembly passes through the retaining member and the second limiting piece is released from contact with the second linkage rod; The second rotating assembly reaches the second position through the retaining member under the action of the elastic member, so that the isolating and grounding switch is switched from the first closing state to the opening state.

3. The operating device of the isolating and grounding switch according to claim 1, characterized in that: The first rotating assembly includes a first rotating arm and a first limiting plate, and the first rotating arm and the first limiting plate are both sleeved on the first operating shaft; The first limiting piece includes a first body and a first limiting flange protruding from the first body. When the first limiting flange contacts the first linkage rod, the linkage mechanism is triggered.

4. The operating device of the isolating and grounding switch according to claim 3, characterized in that: The end surface of the first limiting flange is used to contact the first linkage rod, and the end surface of the first limiting flange is in an arc shape.

5. The operating device of the isolating and grounding switch according to claim 3, characterized in that: The operating device of the isolating and grounding switch further includes a first limiting column provided corresponding to the first rotating arm; When the first limiting piece triggers the first linkage rod, the wall surface of the first limiting column abuts against the first rotating arm to limit the first rotating arm from continuing to rotate along the first clockwise direction.

6. The operating device of the isolating and grounding switch according to claim 1, characterized in that: The operating device of the isolating and grounding switch further includes a second limiting column provided corresponding to the second rotating assembly; When the second rotating assembly rotates to the second position, the second limiting post limits the second rotating assembly to limit the second rotating assembly from continuing to rotate along the first clock direction.

7. The operating device of the isolating and grounding switch according to claim 1, characterized in that The second limiting piece includes a second body and a second limiting protrusion protruding from the second body. When the linkage mechanism is triggered, the second limiting protrusion contacts the second linkage rod to maintain the triggered state of the linkage mechanism.

8. The operating device of the isolating and grounding switch according to claim 7, characterized in that: The end surface of the second limiting flange is used to contact the second linkage rod, and the end surface of the second limiting flange is arc-shaped.

9. The operating device of the isolating and grounding switch according to claim 1, characterized in that: The retaining member is columnar and is provided with a release notch for the second rotating arm to pass through; When the holding member is in a blocking state, the wall surface of the holding member corresponds to the second rotating arm so as to limit the position by abutting against the second rotating arm; When the retaining member is in the tripping position, the tripping notch of the retaining member corresponds to the second rotating arm, so that the second rotating arm can pass through the retaining member.

10. The operating device of the isolating and grounding switch according to claim 7, characterized in that: The operating device of the isolating and grounding switch further includes a reset elastic member and a column; one end of the reset elastic member is fixed to the column, and the other end is connected to the first linkage rod or the second linkage rod; When the second rotating arm rotates along the second clockwise direction so that the second limiting flange is out of contact with the second linkage rod, the linkage mechanism returns to its initial state under the action of the reset elastic member.

11. The operating device of the isolating and grounding switch according to claim 3, characterized in that: The operating device of the isolating and grounding switch further includes a third limiting column; the third limiting column is arranged corresponding to the first rotating arm; When the second operating shaft drives the second rotating arm to rotate from the first position in the second clockwise direction, the wall surface of the third limiting column abuts against the first rotating arm to limit the first rotating arm from rotating in the second clockwise direction, and the elastic member is gradually compressed until the second rotating arm rotates to the inflection point. The second rotating arm continues to rotate along the second clockwise direction from the inflection point position, and the elastic member releases its elasticity to push the second rotating arm to continue to rotate along the second clockwise direction to reach a third position, so that the isolating grounding switch is switched from the open state to the second closed state.

12. The operating device of the isolating and grounding switch according to claim 11, characterized in that: The operating device of the isolating and grounding switch further includes a fourth limiting post; the fourth limiting post is arranged corresponding to the second rotating arm; When the second rotating arm rotates to the third position, the wall surface of the fourth limiting column contacts the second rotating arm to limit the second rotating arm from continuing to rotate along the second clockwise direction.

13. The operating device of the isolating and grounding switch according to claim 11, characterized in that: When the second rotating arm rotates clockwise from the third position, the wall surface of the third limiting column abuts against the first rotating arm to limit the first rotating arm from rotating in the second clockwise direction, thereby gradually compressing the elastic member until the second rotating arm rotates to the inflection point position; The second rotating arm continues to rotate along the first clockwise direction from the inflection point position, and the elastic member releases its elasticity to push the second rotating arm to continue to rotate along the first clockwise direction back to the first position, so that the isolating grounding switch is switched from the second closed state to the open state.

14. The operating device of the isolating and grounding switch according to claim 3, characterized in that: The elastic member is a spring, and the operating device of the isolating and grounding switch further includes a spring fixing rod, a fixing member, and a sliding shaft; The spring is sleeved outside the spring fixing rod; both ends of the spring fixing rod are provided with slide rails and mounting holes along the extension direction of the spring; There are two first rotating arms, and the ends of the two first rotating arms extend to the end of the elastic member. The first fixing member is inserted into the mounting hole, and the two ends are respectively connected to the two first rotating arms. There are two second rotating arms, and ends of the two second rotating arms extend to both sides of the slide rail. The sliding shaft passes through the slide rail, and two ends are respectively connected to the two second rotating arms.

15. The operating device of the isolating and grounding switch according to claim 3, characterized in that: The operating device of the isolating and grounding switch further comprises a first mounting plate and a second mounting plate arranged at intervals; The first operating shaft and the second operating shaft pass through the first mounting plate and the second mounting plate in sequence; the first rotating arm and the second rotating arm are both located between the first mounting plate and the second mounting plate, and the first limiting plate, the first linkage rod, and the second linkage rod are all located on the side of the first mounting plate away from the first rotating arm.

16. The operating device of the isolating and grounding switch according to claim 11, characterized in that: The first operating shaft is a grounding operating shaft, and the second operating shaft is an isolation operating shaft; The first closing state is a grounding closing state, and the second closing state is an isolation closing state.

17. An electrical cabinet, characterized in that: It comprises a cabinet, an isolating and earthing switch, and an operating device according to any one of claims 1 to 16; The isolating and grounding switch and the operating device are both installed in the cabinet; the second operating mechanism of the operating device is connected to the knife switch of the isolating and grounding switch.

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