Interlocking device for grounding switch and switch cabinet

Abstract

The utility model provides an interlocking device for a grounding switch and a switch cabinet. The device comprises a program lock, a locking assembly and a limiting assembly. Through the design of the program lock, the locking assembly and the limiting assembly, when the program lock is in a closed state, the operation main shaft is in a closed state, the program lock shields the operation hole, and the first switch in the locking assembly outputs the first signal for locking the electric operation assembly, so that a user cannot manually control the operation main shaft through the operation hole; and the operation main shaft cannot be controlled by controlling the electric operation assembly, so that the misoperation of a user is effectively avoided. When the program lock is in an open state, a user can control the grounding switch to be switched off or switched on by controlling the limiting assembly to control electric operation or manual operation according to own needs, it is guaranteed that the electric operation is switched off during manual operation or the manual operation is limited during electric operation, misoperation is effectively avoided, and the user experience is improved. And personal and equipment safety can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of switch cabinets, and particularly relates to an interlocking device for an earthing switch and a switch cabinet. Background Art

[0002] A switch cabinet is an electrical device, and an earthing switch is usually provided therein. Controlling the closing of the earthing switch can artificially cause a grounding short circuit of the system, which is beneficial to the maintenance of the switch cabinet or downstream equipment by users and ensures the personal safety of users. At present, the methods for controlling the opening or closing of the earthing switch include electric operation and manual operation. The interlocking device is a device for realizing the transformation between manual operation and electric operation. However, the existing interlocking device has imperfect functions and is prone to cause misoperation by users, resulting in personal casualties and equipment damage. Therefore, in order to prevent misoperation by users and eliminate potential accident hazards, an interlocking device that can prevent misoperation and ensure personal and equipment safety is needed. Summary of the Utility Model

[0003] An object of the utility model is to solve the deficiencies existing in the prior art, and to provide an interlocking device and a switch cabinet that can prevent misoperation by users and ensure personal and equipment safety.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] An interlocking device for an earthing switch is arranged on the cabinet body of the switch cabinet. An operation hole for manually operating the earthing switch is provided on the cabinet body, and an electric operation component for electrically operating the earthing switch is further arranged in the cabinet body, including:

[0006] A program lock, which has a closed state and an open state; when the program lock is in the closed state, the earthing switch is in the closed state, and the program lock blocks the operation hole;

[0007] A locking component, which includes a first switch, and the first switch is electrically connected to the electric operation component; when the program lock is in the closed state, the first switch sends out a first signal for locking the electric operation component;

[0008] A limiting component, which is arranged close to the program lock. The limiting component includes a manual plate and a second switch. The manual plate can limit the opening angle of the program lock, and the second switch is electrically connected to the electric operation component; when the opening angle of the program lock exposes the operation hole, the second switch sends out a second signal for locking the electric operation component.

[0009] In an exemplary embodiment, when the program lock is in the closed state, the program lock abuts against the locking component, so that the first switch sends out a first signal for locking the electric operation component.

[0010] In an exemplary embodiment, the locking assembly includes a first transmission shaft. The first switch and the program lock are spaced apart. The first transmission shaft is disposed between the first switch and the program lock. When the program lock changes from the open state to the closed state, the program lock abuts against the first transmission shaft and moves it in a direction close to the first switch, such that the first transmission shaft contacts the first switch and emits the first signal.

[0011] In an exemplary embodiment, the locking assembly further includes an elastic member and a fitting member. The elastic member is sleeved on the middle part of the first transmission shaft. The opposite sides of the fitting member are provided with assembly holes, and the two ends of the first transmission shaft are respectively inserted through the assembly holes.

[0012] In an exemplary embodiment, the locking assembly includes a limit plate disposed on the earthing switch. When the earthing switch is in the open state, the limit plate blocks the first transmission shaft from moving in a direction close to the first switch.

[0013] In an exemplary embodiment, the locking assembly includes a card disposed on the end of the first transmission shaft close to the first switch. When the earthing switch is in the open state, the limit plate contacts the card to resist the first transmission shaft from moving in a direction close to the first switch.

[0014] In an exemplary embodiment, the limiting assembly includes a support member. One end of the manual plate is rotatably disposed on the support member. The manual plate can rotate in a direction close to the program lock, and the other end of the manual plate abuts against the program lock to limit the rotation of the program lock.

[0015] In an exemplary embodiment, a clamping portion is provided on a side of the support member close to the program lock, and a engaging portion that engages with the clamping portion is provided on the manual plate.

[0016] In an exemplary embodiment, a padlock hole is formed on the support member, and a through hole is formed on the manual plate. The through hole is opposite to the padlock hole.

[0017] In an exemplary embodiment, the limiting assembly includes a second transmission shaft. The second transmission shaft can move relative to the support member. One end of the second transmission shaft is in transmission connection with the manual plate, and the other end contacts the second switch. When the manual plate rotates in a direction away from the support member, the second transmission shaft moves away from the second switch, such that the second switch outputs a second signal.

[0018] In an exemplary embodiment, the interlocking device includes a mounting member. A limiting portion is provided on a side of the mounting member close to the program lock. The limiting portion is provided with a through hole, and the through hole is opposite to the operation hole. The program lock can be received in the through hole, and a limiting hole is provided on the peripheral side wall of the limiting portion; the program lock includes a lock body, a limiting piece and a key; a lock hole and a receiving hole for receiving the limiting piece are provided on the lock body; when the key is inserted into the lock hole, it can control the limiting plate to extend out of the receiving hole; the limiting piece can pass through the limiting hole.

[0019] A switch cabinet includes a cabinet body, an earthing switch, an operating main shaft and the interlocking device for the earthing switch as described above. The earthing switch and the operating main shaft are arranged in the cabinet body. One end of the operating main shaft is connected to the earthing switch, and the other end of the operating main shaft is connected to the interlocking device. By controlling the rotation of the operating main shaft, the earthing switch can be closed or opened.

[0020] It can be seen from the above technical solutions that the present utility model has at least the following advantages and positive effects:

[0021] The interlocking device for the earthing switch in the present utility model includes a program lock, a locking component and a limiting component. Among them, it has a closed state and an open state. When the program lock is in the closed state, the operating main shaft is in the closed state, the program lock blocks the operation hole, and the first switch in the locking component outputs a first signal for locking the electric operation component. It can be understood that when the program lock is in the closed state, the user cannot manually control the operating main shaft through the operation hole, nor can the operating main shaft be controlled by controlling the electric operation component, effectively avoiding the user's misoperation, keeping the earthing switch in the closed state, and effectively ensuring the safety of the user when overhauling the switch cabinet or downstream equipment.

[0022] Correspondingly, when the program lock is in the open state, the first switch in the locking component does not emit the first signal. At this time, the user can control the earthing switch to open by controlling the electric operation component.

[0023] The manual plate in the limiting component can limit the opening angle of the program lock, which means that under the action of the manual plate, the opening angle of the program lock can be made smaller. At this time, although the program lock is in the open state, the operation hole is not completely exposed, resulting in the user being unable to manually operate the operating main shaft through the operation hole, that is, at this time the user can only use electric operation and cannot perform manual operation, effectively avoiding the situation where the user misoperates the manual operation in the electric operation mode. When the opening angle of the program lock is large and the operation hole is completely exposed, the second switch in the limiting component outputs a second signal for locking the electric operation component. At this time, the user can only perform manual operation and cannot perform electric operation, effectively avoiding the situation where the user misoperates the electric operation in the manual operation mode.

[0024] Therefore, when the program lock is in the open state, the user can choose electric operation or manual operation according to their own needs to control the opening or closing of the earthing switch, ensuring that electric operation is disconnected during manual operation or manual operation is restricted during electric operation, effectively avoiding misoperation. Description of the Drawings

[0025] Figure 1 is a perspective view of a partial structure in the switch cabinet according to an embodiment of the present invention.

[0026] Figure 2 is Figure 1 a perspective view of the shown interlocking device and a partial earthing switch.

[0027] Figure 3 is Figure 2 a perspective view of the shown interlocking device and a partial earthing switch from another angle.

[0028] Figure 4 is Figure 2 a perspective view of the mounting member, locking component and program lock in

[0029] Figure 5 is Figure 2 a top view of the shown interlocking device and a partial earthing switch.

[0030] Figure 6 is Figure 2 a perspective view of the supporting member, locking component and mounting member in

[0031] Figure 7 is Figure 6 a perspective view from another angle.

[0032] Figure 8 is Figure 3 a structural view of the limit plate in the shown locking component.

[0033] Figure 9 is Figure 2 a structural view of the limit component in , and the manual plate in the limit component is in the locked state.

[0034] Figure 10 is Figure 9 a structural view of the limit component in when the manual plate is in the unlocked state.

[0035] Explanation of the reference numerals is as follows:

[0036] 10. Mounting member; 11. Limiting portion; 111. Through hole; 112. Limiting hole; 12. Passing hole;

[0037] 20. Program lock; 21. Lock body; 22. Key; 23. Receiving hole;

[0038] 30. Locking component; 31. First switch; 32. First transmission shaft; 33. Elastic member; 34. Fitting; 35. Card; 36. Limiting plate; 361. Blocking portion; 37. Fixing member;

[0039] 40. Supporting member; 41. Supporting hole;

[0040] 50. Limiting component; 51. Manual plate; 511. Engaging portion; 512. Through hole; 52. Second switch; 53. Supporting member; 531. First shaft hole; 532. Clamping portion; 533. Padlock hole; 54. Second transmission shaft; 55. Connecting member; 56. Spring;

[0041] 60. Operating main shaft;

[0042] 70. Cabinet body;

[0043] 80. Electric operating component. Detailed implementation manner

[0044] Typical implementation manners reflecting the features and advantages of the present utility model will be described in detail in the following description. It should be understood that the present utility model can have various changes in different implementation manners, all of which do not depart from the scope of the present utility model, and the descriptions and illustrations therein are for illustrative purposes in essence and are not used to limit the present utility model.

[0045] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indication of the direction or position relationship (such as up, down, left, right, front and back, etc.) is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. When these elements are in the positions shown in the drawings, these descriptions are appropriate. If the descriptions of the positions of these elements change, then the indication of these directions also changes accordingly.

[0046] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0047] The present utility model provides an interlocking device for an earthing switch and a switch cabinet, which can effectively prevent users from misoperating, eliminate potential accident hazards, and ensure personal and equipment safety. The specific solution is described through the following embodiments.

[0048] Please refer to Figure 1 , Figure 1 which only reveals a part of the structure of the switchgear cabinet.

[0049] The switchgear cabinet includes a cabinet body 70, an earthing switch (not shown in the figure), an operating main shaft 60, and an interlocking device. The earthing switch and the operating main shaft 60 are arranged inside the cabinet body 70. One end of the operating main shaft 60 is connected to the interlocking device, and the other end of the operating main shaft is connected to the earthing switch. By controlling the rotation of the operating main shaft 60, the closing or opening of the earthing switch can be realized. That is to say, the operating main shaft 60 has a closing position corresponding to the closing state of the earthing switch and a tripping position corresponding to the tripping state of the earthing switch.

[0050] Please refer to Figure 1 , in this embodiment, the interlocking device is arranged on the cabinet body 70 of the switchgear cabinet. An operating hole (not shown in the figure) for manually operating the closing or opening of the earthing switch is provided on the switchgear cabinet. Specifically, the operating hole corresponds to the end of the operating main shaft 60, so that the user can use an external tool, such as an operating handle, an operating rod, etc., to insert into the operating hole and connect with the operating main shaft 60, and control the rotation of the operating main shaft 60, which is the manual operation.

[0051] An electric operating component 80 for electrically operating the earthing switch is also arranged inside the cabinet body 70 of the switchgear cabinet. Specifically, the electric operating component 80 is in transmission connection with the operating main shaft 60. The user can control the rotation of the operating main shaft 60 by controlling the electric operating component 80 with corresponding instructions, which is the electric operation.

[0052] Refer to Figure 2 , Figure 3 and in combination with Figure 1 , the interlocking device in this embodiment includes a mounting member 10, a program lock 20, and a locking component 30.

[0053] Among them, the mounting member 10 is arranged on the outer side wall of the cabinet body 70. The mounting member 10 is arranged corresponding to the operating hole.

[0054] The program lock 20 is arranged on one side of the mounting member 10. The program lock 20 is rotatably connected to the mounting member 10. Equivalently, the program lock 20 can rotate relative to the cabinet body 70. The program lock 20 has a closed state and an open state. When the program lock 20 is in the closed state, the earthing switch is in the closed state, and the program lock 20 blocks the operating hole, thereby restricting the user from manually operating the earthing switch to open.

[0055] The locking component 30 is arranged on the other side of the mounting member 10. That is to say, the program lock 20 is arranged outside the cabinet body 70, and the locking component 30 is arranged inside the cabinet body 70. When the program lock 20 is in the closed state, the locking component 30 sends a first signal to lock the electric operating component, resulting in the user being unable to electrically operate the earthing switch.

[0056] It can be understood that when the program lock 20 is in the closed state, the user cannot manually control the operating spindle 60 through the operation hole, nor can the user control the operating spindle 60 by controlling the electric operation component, effectively avoiding misoperation by the user and keeping the earthing switch in the closed state, effectively ensuring the safety and reliability when the user performs maintenance on the switch cabinet or downstream equipment.

[0057] See Figure 4 and Figure 5 , on one side of the mounting member 10 close to the program lock 20, a limiting portion 11 is protruded, and a through hole 111 is provided in the limiting portion 11. The through hole 111 is opposite to the operation hole. The program lock 20 can be received in the through hole 111. The process of the program lock 20 rotating from the closed state to the open state is equivalent to rotating the program lock 20 out of the through hole 111 and gradually exposing the operation hole.

[0058] Furthermore, a limiting hole 112 is provided on the peripheral side wall of the limiting portion 11. The program lock 20 includes a lock body 21, a limiting piece (not marked in the figure), and a key 22. A lock hole and a receiving hole 23 for receiving the limiting plate 36 are provided on the lock body 21. When the key 22 is inserted into the lock hole, it can control the limiting piece to extend out of the receiving hole 23 or contract into the receiving hole 23.

[0059] The key 22 is inserted into the lock hole to control the limiting piece to extend out of the receiving hole 23 of the lock body 21. If the limiting piece extending out of the receiving hole 23 passes through the limiting hole 112 on the limiting portion 11, at this time, the mounting member 10 restricts the rotation of the program lock 20, making the program lock 20 in the closed state and remaining in the closed state.

[0060] The key 22 is inserted into the lock hole to control the limiting plate 36 to contract into the receiving hole 23 on the lock body 21. At this time, the restriction of the mounting member 10 on the program lock 20 is released, enabling the program lock 20 to rotate smoothly. The program lock 20 can be rotated from the closed state to the open state.

[0061] The locking component 30 includes a first switch 31. The first switch 31 is arranged in the cabinet body and is spaced from the program lock 20. The first switch 31 is electrically connected to the electric operation component. When the program lock 20 is in the closed state, the first switch 31 emits a first signal.

[0062] Correspondingly, when the program lock 20 is in the open state, the first switch 31 does not emit the first signal, that is, the electric operation component is in the unlocked state. At this time, the user can control the earthing switch to trip by controlling the electric operation component.

[0063] It should be noted that the first switch 31 can be a contact switch or a non-contact switch, as long as the first switch 31 can emit a first signal for locking the electric operation component 80. It can be specifically set according to actual needs and is not limited here. In this embodiment, the first switch 31 is taken as an example of a contact switch.

[0064] In some embodiments, when the program lock is in the closed state, the program lock abuts against the locking component, so that the first switch emits a first signal for locking the electric operation component.

[0065] In some embodiments of the present application, the locking component 30 includes a first transmission shaft 32. The first transmission shaft 32 is arranged between the first switch 31 and the program lock 20. When the program lock 20 rotates from the open state to the closed state, the program lock 20 abuts against the first transmission shaft 32 and moves it in the direction close to the first switch 31, causing the first transmission shaft 32 to contact the first switch 31 and output a first signal.

[0066] Furthermore, a through hole 12 is provided on the mounting member 10. The through hole 12 is for the first transmission shaft 32 to pass through. When the program lock 20 is in the open state, the end of the first transmission shaft 32 extends out of the through hole 12. When the program lock 20 rotates from the open state to the closed state, the program lock 20 abuts against the end of the first transmission shaft 32 passing through the through hole 12, causing the first transmission shaft 32 to move in the direction close to the first switch 31.

[0067] Please refer to Figure 6 and Figure 7 , the locking component 30 further includes an elastic member 33 and a fitting 34. The fitting 34 is used to support the first transmission shaft 32. The fitting 34 can be fixedly installed on the supporting member 40.

[0068] It should be noted that the supporting member 40 is used to support the end of the operation main shaft 60, and it is arranged on the inner side wall of the cabinet. The supporting member 40 is arranged opposite to the mounting member 10. Specifically, a supporting hole 41 is provided on the supporting member 40, and the supporting hole 41 is opposite to the operation hole. The end of the operation main shaft 60 passes through the supporting hole 41 on the supporting member 40 and is received in the operation hole.

[0069] Assembly holes are provided on the opposite sides of the fitting 34, and the two ends of the first transmission shaft 32 are respectively passed through the assembly holes. The elastic member 33 is sleeved on the middle part of the first transmission shaft 32.

[0070] When the program lock 20 rotates from the open state to the closed state, the program lock 20 abuts against the end of the first transmission shaft 32 and moves it in the direction close to the first switch 31, and the elastic member 33 is compressed.

[0071] It can be understood that when the program lock 20 rotates from the closed state to the open state, upon the elastic member 33 rebounding, the transmission shaft automatically moves away from the first switch 31, thereby disconnecting the contact between the first transmission shaft 32 and the first switch 31. The first switch 31 no longer outputs the first signal, and the electric operation assembly is unlocked, allowing the user to operate the electric operation assembly to control the closing or opening of the earthing switch.

[0072] Further, referring to Figure 6 and in combination with Figure 3 as shown, the locking assembly 30 includes a limit plate 36. The limit plate 36 is provided on the operating main shaft 60 of the earthing switch. The limit plate 36 can rotate with the rotation of the operating main shaft 60. When the earthing switch is in the open state, that is, when the operating main shaft is in the open position, the limit plate 36 can block the first transmission shaft 32 from moving towards the first switch 31, preventing the user from accidentally touching the program lock 20, resulting in the contact between the first transmission shaft 32 and the first switch 31, and locking the electric operation assembly 80, thus preventing the user from electrically operating the earthing switch.

[0073] In some embodiments, the locking assembly 30 includes a card 35. The card 35 is provided at the end of the first transmission shaft 32 close to the first switch 31, and the limit plate 36 is provided on the earthing switch. The card 35 cooperates with the limit plate 36 such that only when the earthing switch is in the closed state can the program lock 20 be rotated to make the program lock 20 in the closed state to lock both the electric operation assembly and the manual operation simultaneously.

[0074] Specifically, a slot is provided along the circumferential direction at the end of the first operating shaft away from the program lock 20, and the card 35 is clamped in the slot. When the operating main shaft 60 is in the open position, the limit plate 36 contacts the card 35, thereby restricting the contact between the first transmission shaft 32 and the first switch 31, and at this time, the end of the first transmission shaft 32 extends out of the through hole 12 on the mounting member 10, resulting in the user being unable to smoothly rotate the program lock 20 to make the program lock 20 in the closed state.

[0075] Only when the operating main shaft 60 rotates from the open position to the closed position, the limit plate 36 no longer contacts the card 35, that is, the limit plate 36 no longer restricts the first transmission shaft 32 from moving towards the first switch 31. At this time, the user can rotate the program lock 20 to the closed state. It can be understood that the user can judge whether the earthing switch is in the closed or open state by rotating the program lock to see if it can be rotated to the closed state.

[0076] Further, referring to Figure 8 and in combination with Figure 3, the limiting plate 36 includes a resisting portion 361. The resisting portion 361 extends outward in a direction perpendicular to the axis of the operating main shaft 60. When the operating main shaft 60 is in the opening position, the resisting portion 361 contacts the card 35 to limit the contact between the first transmission shaft 32 and the first switch 31.

[0077] In addition, the card 35 also functions to prevent the end of the first transmission shaft 32 from moving out of the fitting hole on the fitting 34. Specifically, the card 35 is provided at one end of the fitting 34 close to the first switch 31. When the program lock 20 rotates from the closed state to the open state, the transmission shaft automatically moves away from the first switch 31 until the card 35 fits against the end face of the fitting 34, thereby restricting the first transmission shaft 32 from continuing to move away from the first switch 31.

[0078] Continue to refer to Figure 6 , the locking assembly 30 further includes a fixing member 37 for fixing the first switch 31. Specifically, one end of the fixing member 37 is connected to the first switch 31, and the other end of the fixing member 37 can be fixedly connected to the inner side wall of the cabinet.

[0079] Please refer to Figure 2 , the interlocking device includes a limiting assembly 50. The limiting assembly 50 is disposed close to the program lock 20.

[0080] Under the action of the limiting assembly 50, the user can select electric operation or manual operation to control the opening of the earthing switch according to their own needs, ensuring that electric operation is locked during manual operation or manual operation is restricted during electric operation, so as to effectively avoid accidents caused by misoperation.

[0081] Specifically, the limiting assembly 50 includes a manual plate 51 and a second switch 52. Among them, the second switch 52 is electrically connected to the electric operation assembly. The manual plate 51 requires manual operation by the user. The manual plate 51 can limit the opening angle of the program lock 20.

[0082] It should be noted that in this embodiment, when the program lock 20 rotates clockwise, it is to open the program lock 20, and when it rotates counterclockwise, it is to rotate the program lock 20 from the open state to the closed state. Therefore, taking the limiting assembly 50 being disposed on the left side of the program lock 20 as an example, the opening angle of the program lock 20 is restricted for illustration. In other embodiments, the program lock 20 can also rotate counterclockwise to open the program lock 20 and rotate clockwise to rotate the program lock 20 from the open state to the closed state. At this time, the limiting assembly 50 can be disposed on the right side of the program lock 20 to limit the opening angle when the program lock 20 rotates counterclockwise. It can be specifically set according to actual needs and is not limited here.

[0083] In some examples, the limiting assembly 50 includes a support member 53, and the support member 53 is installed on the outer side wall of the cabinet.

[0084] One end of the manual plate 51 is rotatably provided on the support member 53. Specifically, referring to Figure 8 , a first shaft hole 531 is formed on the support member 53, a second shaft hole (not shown in the figure) is formed on the manual plate 51, and a connecting shaft (not labeled in the figure) passes through the first shaft hole 531 and the second shaft hole simultaneously, so as to realize that the manual plate 51 can rotate relative to the support member 53. And the manual plate 51 can rotate towards the direction close to the program lock 20.

[0085] For the convenience of description, rotating the manual plate 51 towards the direction close to the program lock 20 is simply referred to as counterclockwise rotation; rotating the manual plate 51 towards the direction away from the program lock 20 is simply referred to as clockwise rotation.

[0086] Continue to refer to Figure 2 , the other end of the manual plate 51 abuts against the program lock 20 to limit the counterclockwise rotation of the program lock 20. It can be understood that by controlling the rotation of the manual plate 51, the opening angle of the program lock 20 can be controlled; and the opening angle of the program lock 20 determines whether the user can perform manual operations. Specifically, rotating the manual plate 51 towards the direction away from the support member 53 can make the opening angle of the program lock 20 larger, completely exposing the operation hole, and at this time the user can perform manual operations. On the contrary, if the manual plate 51 is rotated so that the opening angle of the program lock 20 is smaller, the program lock 20 still blocks the operation hole and does not completely expose the operation hole, resulting in the user being unable to perform manual operations.

[0087] Furthermore, referring to Figure 9 , the first shaft hole 531 extends along the direction close to the program lock 20, so that the user can control the manual plate 51 to move towards the direction close to the program lock 20.

[0088] A clamping portion 532 is provided on one side of the support member 53 close to the program lock 20, and a engaging portion 511 that engages with the clamping portion 532 is provided on the manual plate 51. When the engaging portion 511 on the manual plate 51 engages with the clamping portion 532, it is equivalent to locking the manual plate 51, preventing the user from accidentally touching the manual plate 51 and causing the manual plate 51 to be accidentally opened.

[0089] The specific operation process of locking the manual plate 51 is as follows: Move the manual plate 51 towards the direction close to the program lock 20, and then rotate the manual plate 51 counterclockwise; when the engaging portion 511 on the manual plate 51 is closer to the cabinet body than the clamping portion 532, move the manual plate 51 towards the direction away from the program lock 20, and then rotate the manual plate 51 clockwise, so that the engaging portion 511 on the manual plate 51 engages with the clamping portion 532 on the support member 53, that is, the locking of the manual plate 51 is completed.

[0090] See Figure 10, in some embodiments of the present application, a padlock hole 533 is formed on the support member 53, and a through hole 512 is formed on the manual plate 51. The through hole 512 is opposite to the padlock hole 533, so that an external lock can be assembled to lock the manual plate 51. Without the key 22 for unlocking the external lock, unlocking the external lock and removing the external lock, the manual plate 51 cannot be moved or rotated.

[0091] When the manual plate 51 rotates away from the support member 53, that is, when the manual plate 51 rotates clockwise to expose the operation hole by the program lock 20, the second switch 52 emits a second signal for locking the electric operation assembly.

[0092] It should be noted that the second switch 52 can be a contact switch or a non-contact switch, as long as the second switch 52 can emit a second signal for locking the electric operation assembly 80. It can be specifically set according to actual needs and is not limited here. In this embodiment, the second switch 52 is taken as an example of a non-contact switch.

[0093] In some embodiments, the limiting assembly 50 includes a second transmission shaft 54. The second transmission shaft 54 can move relative to the support member 53. One end of the second transmission shaft 54 is in transmission connection with the manual plate 51, and the other end is in contact with the second switch 52. When the manual plate 51 rotates clockwise, the second transmission shaft 54 moves away from the second switch 52, so that the second switch 52 emits a second signal for locking the electric operation assembly.

[0094] Correspondingly, when the manual plate 51 rotates counterclockwise, the manual plate 51 abuts against the second transmission shaft 54 and moves in the direction close to the second switch 52, so that the second transmission shaft 54 contacts the second switch 52, and then the second switch 52 does not emit a second signal.

[0095] It should be noted that only when the manual plate 51 is unlocked and the manual plate 51 is fully opened, the second transmission shaft 54 will not contact the second switch 52. That is, if the rotation angle of the manual plate 51 is small after unlocking the manual plate 51, although the second transmission shaft 54 moves away from the second switch 52, it still remains in contact with the second switch 52, and at this time the manual plate 51 still restricts the rotation of the program lock 20, so that the opening angle of the program lock 20 is small and the operation hole cannot be fully exposed. Only after unlocking the manual plate 51 and rotating the manual plate 51 by a large angle, the second transmission shaft 54 will not contact the second switch 52, which means that the opening angle of the program lock 20 is large at this time and the operation hole can be fully exposed.

[0096] Further, the limiting component 50 further includes a connecting member 55, and the connecting member 55 is disposed opposite to the support member 53. In some examples, the support member 53 is disposed on the outer sidewall of the cabinet body, and the connecting member 55 is disposed on the inner sidewall of the cabinet body. One end of the connecting member 55 can be connected to the support member 53, and the other end of the connecting member 55 is connected to the second switch 52. The second transmission shaft 54 is movably disposed on the connecting member 55.

[0097] The limiting component 50 further includes a spring 56. The spring 56 is sleeved on the second transmission shaft 54. When the second transmission shaft 54 contacts the second switch 52, the spring 56 is in a contracted state. When the manual plate 51 is rotated clockwise, the spring 56 extends to drive the second transmission shaft 54 to automatically move away from the second switch 52.

[0098] Under the action of the manual plate 51, if the opening angle of the program lock 20 is small, although the program lock 20 is in the open state at this time, since the operation hole is not completely exposed, the user cannot manually operate the operation main shaft 60 through the operation hole, that is, at this time the user can only use electric operation and cannot perform manual operation, effectively avoiding the situation that the user misoperates the manual operation in the electric operation mode.

[0099] If the opening angle of the program lock 20 is large and the operation hole is completely exposed, the second switch 52 in the limiting component 50 outputs a second signal to lock the electric operation component. At this time, the user can only perform manual operation and cannot perform electric operation, effectively avoiding the situation that the user misoperates the electric operation in the manual operation mode.

[0100] Therefore, when the program lock 20 is in the open state, the user can select electric operation or manual operation by controlling the manual plate according to his own needs to control the grounding switch to trip or close, ensuring that the electric operation is disconnected during manual operation or the manual operation is restricted during electric operation, effectively avoiding accidents caused by misoperation.

[0101] It can be seen from the above technical solutions that the interlocking device provided by this embodiment has the following advantages and beneficial implementation effects.

[0102] Through the design of the program lock 20, the locking component 30, and the limit component 50, the program lock 20 can only rotate to the closed state when the earthing switch is in the closed state, and when the program lock 20 rotates to the closed state, the earthing switch is locked in the closed state, preventing the user from accidentally opening the earthing switch due to misoperation, thus ensuring the safety of the user and the equipment. In addition, the user can limit the opening angle of the program lock 20 by controlling the manual plate 51 of the limit component 50 as needed to switch between electric operation and manual operation. Only when the manual plate 51 in the limit component 50 is fully opened can the program lock 20 rotate at a large angle. Otherwise, the switch between electric operation and manual operation cannot be completed, ensuring that the electric operation is locked during manual operation or the manual operation is restricted during electric operation, and avoiding accidents caused by repeated operations or operation conflicts.

[0103] The above embodiments are only illustrative examples of the structure. The structures in each embodiment are not fixedly combined structures. Without structural conflicts, the structures in multiple embodiments can be arbitrarily combined and used.

[0104] Although the present invention 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 invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. An interlocking device for a grounding switch, arranged on a switch cabinet, the cabinet being provided with an operating hole for manually operating the grounding switch, and the cabinet being provided with an electric operating assembly for electrically operating the grounding switch, characterized in that: include: A program lock, wherein the program lock has a closed state and an open state; When the program lock is in the closed state, the grounding switch is in the closed state, and the program lock blocks the operating hole; A locking assembly, the locking assembly comprising a first switch, the first switch being electrically connected to the electric operating assembly; when the program lock is in the closed state, the first switch sends a first signal to lock the electric operating assembly; A limit assembly is arranged near the program lock, and the limit assembly includes a manual plate and a second switch. The manual plate can limit the opening angle of the program lock, and the second switch is electrically connected to the electric operation assembly; when the opening angle of the program lock makes the operation hole exposed, the second switch sends a second signal to lock the electric operation assembly.

2. The interlocking device according to claim 1, characterized in that: When the program lock is in the closed state, the program lock abuts against the locking component, so that the first switch sends a first signal to lock the electric operation component.

3. The interlocking device according to claim 2, characterized in that: The locking assembly includes a first transmission shaft, the first switch and the program lock are spaced apart, and the first transmission shaft is disposed between the first switch and the program lock; when the program lock changes from the open state to the closed state, the program lock pushes against the first transmission shaft and moves in a direction close to the first switch, so that the first transmission shaft contacts the first switch and sends the first signal.

4. The interlocking device according to claim 3, characterized in that: The locking assembly also includes an elastic member and an assembly member, wherein the elastic member is sleeved on the middle portion of the first transmission shaft, and assembly holes are provided on opposite sides of the assembly member, and both ends of the first transmission shaft are respectively inserted into the assembly holes.

5. The interlocking device according to claim 3, characterized in that: The locking assembly includes a limit plate, which is arranged on the grounding switch; when the grounding switch is in an open state, the limit plate blocks the first transmission shaft from moving in a direction close to the first switch.

6. The interlocking device according to claim 5, characterized in that: The locking assembly includes a card, which is arranged on the end of the first transmission shaft close to the first switch; when the grounding switch is in an open state, the limit plate contacts the card to prevent the first transmission shaft from moving in a direction close to the first switch.

7. The interlocking device according to claim 1, characterized in that: The limit assembly includes a support member, one end of the manual plate is rotatably disposed on the support member, the manual plate can be rotated in a direction close to the program lock, and the other end of the manual plate abuts against the program lock to limit the rotation of the program lock.

8. The interlocking device for the grounding switch according to claim 7, characterized in that: A clamping portion is provided on one side of the support member close to the program lock, and a clamping portion clamped with the clamping portion is provided on the manual plate.

9. The interlocking device for the grounding switch according to claim 7, characterized in that: The support member is provided with a padlock hole, and the manual plate is provided with a through hole, and the through hole is opposite to the padlock hole.

10. The interlocking device according to claim 7, characterized in that: The limit assembly includes a second transmission shaft, which can move relative to the support member. One end of the second transmission shaft is transmission-connected to the manual plate, and the other end is in contact with the second switch. When the manual plate rotates in a direction away from the support member, the second transmission shaft moves away from the second switch, so that the second switch outputs a second signal.

11. The interlocking device according to claim 1, characterized in that: The interlocking device includes a mounting piece, a limiting portion is provided on a side of the mounting piece close to the program lock, the limiting portion is provided with a through hole, the through hole is opposite to the operating hole, the program lock can be received in the through hole, and a limiting hole is provided on the surrounding side wall of the limiting portion; the program lock includes a lock body, a limiting plate and a key; the lock body is provided with a lock hole and a receiving hole for receiving the limiting plate; the key is inserted into the lock hole to control the limiting plate to extend out of the receiving hole; the limiting plate can be inserted into the limiting hole.

12. A switch cabinet, characterized in that: The invention comprises a cabinet, an earthing switch, an operating spindle and an interlocking device for an earthing switch according to any one of claims 1 to 11, wherein the earthing switch and the operating spindle are arranged in the cabinet, one end of the operating spindle is connected to the earthing switch, and the other end of the operating spindle is connected to the interlocking device, and the earthing switch can be closed or opened by controlling the rotation of the operating spindle.

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