Interlocking device for outgoing line program lock of ring main unit

Abstract

A ring main unit outgoing line program lock interlocking device comprises an operating mechanism, the operating mechanism is provided with a mounting plate used for mounting a locking mechanism and an operating shaft arranged on the mounting plate, the locking mechanism comprises a lock body, a key and a microswitch arranged on one side of the lock body, a locking plate linked with the key is arranged between the lock body and the mounting plate, and the operating shaft is arranged on the operating shaft. The rear side of the operating mechanism is provided with a limiting mechanism, and the limiting mechanism comprises a locking arm which extends to the locking plate and can select a locking position with the locking arm; when the operating mechanism is in an opening state, the locking arm and the locking plate are in an unlocking state, the key rotates to drive the locking plate to move and then can be pulled out, and the locking plate triggers the microswitch to cut off a power supply and shield the operating shaft so that the operating shaft cannot be inserted into the handle; when the operating mechanism is in a switching-on state, the locking arm and the locking plate are in a locking state, and the key cannot be rotationally pulled out and drives the locking plate to move.

Description

Technical Field

[0001] The invention relates to a ring network cabinet outlet program lock interlocking device, belonging to the field of ring network cabinets. Background Art

[0002] In today's distribution network systems, in order to improve power supply reliability and stability, many have adopted dual power supply circuits. When one power supply system fails, it can quickly switch to another power supply system to ensure uninterrupted power supply.

[0003] In the power system, two power systems are not allowed to be directly connected in series due to certain differences in frequency, voltage, current, and power factors. During normal power supply, only one power system is in operation, and the other is used as a backup power supply. This requires a locking device to be added between the two power systems to ensure that only one power system provides power at the same time.

[0004] The existing ring main units are all equipped with a program lock function, which can realize the lock function when dual power supply is used, that is, only one outgoing line cabinet can be closed at the same time, while the other outgoing line cabinet cannot be operated.

[0005] However, the traditional program lock can only ensure that the unlocking key is not pulled out. For example, a Chinese utility model with publication number CN211980461U provides a solid ring network cabinet program lock interlocking device, including an operating mechanism, a mounting frame and a lock body, the lock body is fixed to the operating mechanism through the mounting frame, the operating mechanism is connected to an operating shaft, the operating shaft is provided with a limiting structure, the lock body is connected to a baffle assembly through a locking rod, the baffle assembly includes an outer baffle and an inner baffle, the operating shaft rotates with the opening and closing of the operating mechanism, thereby driving the limiting structure to The key lock is switched between a position that blocks the inner baffle and a position that does not block the inner baffle, and the lock rod on the lock body moves left and right with the rotation of the key, thereby driving the outer baffle and the inner baffle to move left and right. The key can only be pulled out after being rotated into place. During the rotation of the key, when the inner baffle is blocked by the limiting structure, the outer baffle does not block the operating shaft, and the key is not rotated into place and cannot be pulled out. When the inner baffle is not blocked by the limiting structure, the outer baffle blocks the operating shaft, and the key is rotated into place and can be pulled out.

[0006] This structure cannot guarantee that the unlocking key will not be pulled out, but it is not linked with other structures, and cannot avoid the problem of forcibly inserting the handle to drive the operating shaft, which will cause safety problems and affect normal use. Summary of the invention

[0007] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a ring network cabinet outlet program lock interlocking device.

[0008] A ring network cabinet outlet program lock interlocking device, comprising an operating mechanism, a mounting plate for mounting a locking mechanism and an operating shaft arranged on the mounting plate are provided on the operating mechanism, the locking mechanism comprises a lock body, a key and a micro switch arranged on one side of the lock body, a locking plate linked to the key is provided between the lock body and the mounting plate, a limiting mechanism is provided at the rear side of the operating mechanism, and the limiting mechanism comprises a locking arm extending to the locking plate and capable of selecting a locking position with the locking arm;

[0009] When the operating mechanism is in the open state, the locking arm and the locking plate are in the unlocked state, and the key can be pulled out after the locking plate is moved by rotation. The locking plate triggers the micro switch to cut off the power supply and blocks the operating shaft so that it cannot be inserted into the handle;

[0010] When the operating mechanism is in the closed state, the locking arm and the locking plate are in a locked state, and the key cannot be rotated and pulled out and drive the locking plate to move.

[0011] By setting a locking plate that is linked to the key between the lock body and the mounting plate, combined with the locking arm design in the limit mechanism, it is possible to effectively avoid the situation of forcibly inserting the handle to drive the operating shaft, and prevent safety accidents caused by illegal operations. Through the linkage design of the locking plate and the micro switch, not only the mechanical locking function is realized, but also the power supply can be cut off, further improving the operating safety and reliability of the equipment. The locking mechanism designed by the present invention can ensure that only one power supply system is in working state at the same time, and the other power supply system remains on standby, thereby meeting the needs of locking and switching of the dual power supply system and improving the reliability and stability of the distribution network system. Compared with the traditional program lock, the present invention realizes the unification of functions such as electrical linkage, mechanical locking and misoperation protection through the synergistic effect of the locking plate, micro switch and limit mechanism, which greatly improves the safety, reliability and practicality of the ring network cabinet outlet program lock interlocking device.

[0012] Preferably, the operating mechanism includes an output plate arranged on the rear side, the limiting mechanism includes a fixed plate fixedly installed above the operating output plate, a sliding column is slidably provided on the fixed plate, a spring is sleeved on the sliding column, the locking arm is fixedly provided on the top of the sliding column, and the sliding column drives the locking arm and the locking plate to unlock in the open state by its own weight and the elastic force of the spring.

[0013] Through the design of the sliding column, the sliding column is used to drive the locking arm to unlock under the action of gravity, without additional operation, so that the device can automatically unlock in the open state, simplifying the operation process and improving the convenience of operation. When the sliding column moves under the action of external force, the spring provides a rebound force to ensure that the locking arm can be stably reset, thereby ensuring the precise and reliable action of the locking mechanism and preventing failures caused by mechanical jamming. By utilizing the deadweight of the sliding column and the elastic force of the spring to realize the unlocking function of the limit arm, the need for a complex drive device is avoided, the complexity of the system design and the manufacturing cost are reduced, and the stability of the structure is improved.

[0014] Furthermore, a horizontally arranged push plate is provided outside the fixed plate extending from the bottom of the sliding column. The output plate rotates and abuts against the push plate in the closed state, thereby pushing the sliding column to slide upward, driving the locking arm to move upward and lock the locking plate so that it cannot move.

[0015] In the closed state, the output plate rotates to abut against the push plate, pushing the sliding column upward, thereby driving the locking arm to move upward and lock with the locking plate. This design ensures that the locking plate cannot move in the closed state, further preventing the key from being turned by mistake or unauthorized operation, and enhancing the safety and reliability of operation.

[0016] Furthermore, a limit pin located below the spring is fixed on the sliding column, and the limit pin abuts against the inner wall of the fixing plate to limit the movement stroke of the locking arm.

[0017] The setting of the limit pin can limit the maximum moving distance of the sliding column, thereby accurately controlling the moving stroke of the locking arm, ensuring that the locking arm is always within the design range during operation, and avoiding excessive or insufficient movement that may cause device malfunction.

[0018] Preferably, a limit plate in a vertical state is provided on the locking plate, and a hook is provided at the end of the locking arm. The hook abuts against the limit plate in the open state so that the locking plate cannot move, and the hook releases the abutment with the limit plate in the closed state so that it can pass through the gap between the locking arm and the locking plate, and the locking plate can move.

[0019] In the open state, the limit plate provides physical blocking, and the locking plate cannot move even if it is subjected to external force, eliminating the unlocking problem caused by external interference or misoperation, and further ensuring the safety of equipment operation. The structural design of the hook and the limit plate is purely mechanical, with a small number of parts and high device durability, which reduces the maintenance cost caused by the failure of the complex linkage mechanism and facilitates on-site adjustment and maintenance.

[0020] Preferably, the locking plate includes a plate body and a first trigger portion and a second trigger portion arranged on the plate body, the first trigger portion extends to one side of the lock body for triggering the micro switch, the second trigger portion is bent, and the second trigger portion includes a shielding portion, which is located in front of the operating shaft in the open state and is used to shield the operating shaft from being inserted into the handle.

[0021] The first trigger part extends to one side of the lock body, and is used to trigger the micro switch when the locking plate moves. It can realize the electrical interlocking function, ensure that the power is cut off in the open state, and prevent accidental power-on operation; release the trigger state in the closed state, restore the power supply, and ensure the correctness of the operation sequence. The second trigger part is formed into a shielding part through a bending design, which blocks the operating shaft in the open state, prevents the handle from being inserted, and ensures that the operating mechanism cannot malfunction, thereby realizing the mechanical linkage locking function and further improving safety. Through the precisely designed first and second trigger parts, it can be ensured that each opening and closing operation can accurately trigger the micro switch and complete the shielding or release action, preventing functional failure due to errors and ensuring the operational reliability of the device.

[0022] Furthermore, a button for closing the switch is provided on the mounting plate, the button includes a push shaft arranged on the rear side, a limit step is provided on the push shaft, the locking plate also includes a third trigger portion, the third trigger portion extends in a bent shape to the limit step of the push shaft, and the third trigger portion slides to the front of the limit step in the closed state so that it cannot be pressed.

[0023] In the closed state, the movement of the locking plate directly limits the button operation, ensuring that the button can only be used in a specific state, realizing electrical and mechanical dual interlock protection. The third trigger part is located in front of the limit step in the closed state, forming a physical limit on the limit step to prevent the operator from accidentally pressing the button to cause unnecessary opening or other malfunction operations, effectively improving the safety of the operation process.

[0024] Preferably, a sliding groove is provided on the locking plate, and the key is linked to the locking plate via the sliding groove, and the key drives the locking plate to move by a rotating action.

[0025] The sliding groove provides a fixed sliding track for the lock body, ensuring smooth movement during operation, avoiding shaking or jamming, and improving the smoothness and stability of operation.

[0026] The beneficial effects of the present invention are as follows: by setting a locking plate that is linked to the key between the lock body and the mounting plate, combined with the locking arm design in the limit mechanism, it is possible to effectively avoid the situation of forcibly inserting the handle to drive the operating shaft, and prevent safety accidents caused by illegal operations. Through the linkage design of the locking plate and the micro switch, not only the mechanical locking function is realized, but also the power supply can be cut off, further improving the operating safety and reliability of the equipment. The locking mechanism designed by the present invention can ensure that only one power supply system is in working state at the same time, and the other power supply system remains in standby, thereby meeting the needs of locking and switching of the dual power supply system and improving the reliability and stability of the distribution network system. Compared with the traditional program lock, the present invention realizes the unification of functions such as electrical linkage, mechanical locking and misoperation protection through the synergistic effect of the locking plate, micro switch and limit mechanism, which greatly improves the safety, reliability and practicality of the ring network cabinet outlet program lock interlocking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0028] Figure 1 It is the main structure diagram of the present invention;

[0029] Figure 2 for Figure 1 A magnified detail of the center point A;

[0030] Figure 3 To remove some parts of the structural diagram;

[0031] Figure 4 for Figure 3 A magnified view of the detail at B in the middle;

[0032] Figure 5 The structural diagram of the present invention without the lock body;

[0033] Figure 6 It is a rear-view angle structural diagram of the present invention;

[0034] In the figure, 1. operating mechanism; 11. mounting plate; 12. operating shaft; 13. output plate; 14. button; 141. push shaft; 142. limit step; 2. locking mechanism; 21. lock body; 22. key; 23. micro switch; 24. locking plate; 241. limit plate; 243. first trigger part; 244. second trigger part; 245. shielding part; 246. third trigger part; 247. sliding groove; 3. limit mechanism; 31. locking arm; 311. hook; 33. fixing plate; 34. sliding column; 35. spring; 36. limit pin; 37. pushing plate. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0037] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are for explaining and understanding the present invention, but not for limiting the scope of protection of the present invention.

[0038] like Figure 1-6 As shown, an embodiment of a ring main unit outlet program lock interlocking device of the present invention comprises an operating mechanism 1, on which a mounting plate 11 for mounting a locking mechanism 2 and an operating shaft 12 arranged on the mounting plate 11 are provided, the locking mechanism 2 comprises a lock body 21, a key 22 and a micro switch 23 arranged on one side of the lock body 21, a locking plate 24 linked to the key 22 is provided between the lock body 21 and the mounting plate 11, a limiting mechanism 3 is provided at the rear side of the operating mechanism 1, and the limiting mechanism 3 comprises a locking arm 31 extending to the locking plate 24 and selectively locking the locking position with the locking arm 31;

[0039] When the operating mechanism 1 is in the off state, the locking arm 31 and the locking plate 24 are in the unlocked state, and the key 22 can be pulled out after the locking plate 24 is moved by rotation, and the locking plate 24 triggers the micro switch 23 to cut off the power supply and block the operating shaft 12 so that it cannot be inserted into the handle;

[0040] When the operating mechanism 1 is in the closed state, the locking arm 31 and the locking plate 24 are in a locked state, and the key 22 cannot be rotated and pulled out and drives the locking plate 24 to move.

[0041] By setting a locking plate 24 linked with the key 22 between the lock body 21 and the mounting plate 11, combined with the design of the locking arm 31 in the limit mechanism 3, it is possible to effectively avoid the situation of forcibly inserting the handle to drive the operating shaft 12, and prevent safety accidents caused by illegal operations. Through the linkage design of the locking plate 24 and the micro switch 23, not only the mechanical locking function is realized, but also the power supply can be cut off, further improving the operating safety and reliability of the equipment. The locking mechanism 2 designed by the present invention can ensure that only one power supply system is in working state at the same time, and the other power supply system remains in standby, thereby meeting the requirements of locking and switching of the dual power supply system and improving the reliability and stability of the distribution network system. Compared with the traditional program lock, the present invention realizes the unification of functions such as electrical linkage, mechanical locking and misoperation protection through the synergistic effect of the locking plate 24, the micro switch 23 and the limit mechanism 3, which greatly improves the safety, reliability and practicality of the ring network cabinet outlet program lock interlocking device.

[0042] The operating mechanism 1 includes an output plate 13 arranged at the rear side, and the limiting mechanism 3 includes a fixed plate 33 fixedly installed above the operating output plate 13. A sliding column 34 is slidably provided on the fixed plate 33, and a spring 35 is sleeved on the sliding column 34. The locking arm 31 is fixedly provided on the top of the sliding column 34. The sliding column 34 drives the locking arm 31 to unlock the locking plate 24 in the open state by its own weight and spring elastic force.

[0043] Through the design of the sliding column 34, the sliding column 34 is used to drive the locking arm 31 to unlock under the action of gravity and spring elastic force, without additional operation, so that the device can automatically unlock in the open state, simplifying the operation process and improving the convenience of operation. When the sliding column 34 moves under the action of external force, the spring 35 provides a rebound force to ensure that the locking arm 31 can be stably reset, thereby ensuring that the action of the locking mechanism 2 is accurate and reliable, and preventing failures caused by mechanical jamming. By utilizing the deadweight of the sliding column 34 to realize the unlocking function of the limit arm, the need for a complex driving device is avoided, the complexity of the system design and the manufacturing cost are reduced, and the stability of the structure is improved.

[0044] The bottom of the sliding column 34 extends out of the fixed plate 33 and a horizontally arranged push plate 37 is provided outside. The output plate 13 rotates and abuts against the push plate 37 in the closed state, thereby pushing the sliding column 34 to slide upward, driving the locking arm 31 to move upward and lock the locking plate 24 so that it cannot move.

[0045] In the closed state, the output plate 13 rotates to abut against the push plate 37, pushing the sliding column 34 to slide upward, thereby driving the locking arm 31 to move upward and lock with the locking plate 24. This design ensures that the locking plate 24 cannot move in the closed state, further preventing the key 22 from being turned by mistake or unauthorized operation, and enhancing the safety and reliability of the operation.

[0046] A limiting pin 36 located below the spring 35 is fixed on the sliding column 34 , and the limiting pin 36 abuts against the inner wall of the fixing plate 33 to limit the movement stroke of the locking arm 31 .

[0047] The setting of the limit pin 36 can limit the maximum movement distance of the sliding column 34, thereby accurately controlling the movement stroke of the locking arm 31, ensuring that the locking arm 31 is always within the design range during operation, and avoiding excessive or insufficient movement that causes device malfunction.

[0048] The locking plate 24 is provided with a limit plate 241 in a vertical state, and the end of the locking arm 31 is provided with a hook 311. The hook 311 abuts against the limit plate 241 in the open state so that the locking plate 24 cannot move. The hook 311 releases the abutment state with the limit plate 241 in the closed state so that it can pass through the gap between the locking arm 31 and the locking plate 24, and the locking plate 24 can move.

[0049] In the open state, the presence of the limit plate 241 provides physical blocking, and the locking plate 24 cannot move even if it is subjected to external force, eliminating the unlocking problem caused by external interference or misoperation, and further ensuring the safety of equipment operation. The structural design of the hook 311 and the limit plate 241 is a purely mechanical form, with a small number of parts and high device durability, which reduces the maintenance cost caused by the failure of the complex linkage mechanism and facilitates on-site adjustment and maintenance.

[0050] The locking plate 24 includes a plate body and a first trigger portion 243 and a second trigger portion 244 arranged on the plate body. The first trigger portion 243 extends to one side of the lock body 21 to trigger the micro switch 23. The second trigger portion 244 is bent. The second trigger portion 244 includes a shielding portion 245. The shielding portion 245 is located in front of the operating shaft 12 in the open state to shield the operating shaft 12 from being inserted into the handle.

[0051] The first trigger part 243 extends to one side of the lock body 21, and is used to trigger the micro switch 23 when the locking plate 24 moves, which can realize the electrical interlocking function, ensure that the power is cut off in the open state, and prevent accidental power-on operation; release the trigger state in the closed state, restore the power supply, and ensure the correctness of the operation sequence. The second trigger part 244 is formed by a bending design to form a shielding part 245, which shields the operating shaft 12 in the open state, prevents the handle from being inserted, and ensures that the operating mechanism 1 cannot malfunction, thereby realizing the mechanical linkage locking function and further improving safety. Through the precisely designed first trigger part 243 and second trigger part 244, it can be ensured that each opening and closing operation can accurately trigger the micro switch 23 and complete the shielding or release action, prevent functional failure due to errors, and ensure the operational reliability of the device.

[0052] A button 14 for closing the switch is provided on the mounting plate 11, and the button 14 includes a push shaft 141 provided on the rear side, and a limiting step 142 is provided on the push shaft 141. The locking plate 24 also includes a third trigger portion 246, and the third trigger portion 246 extends in a bent shape to the limiting step 142 of the push shaft 141. In the closed state, the third trigger portion 246 slides to the front of the limiting step 142 so that it cannot be pressed.

[0053] In the closed state, the movement of the locking plate 24 directly limits the operation of the button 14, ensuring that the button 14 can only be used in a specific state, thereby realizing electrical and mechanical dual interlocking protection. The third triggering part 246 is located in front of the limit step 142 in the closed state, forming a physical limit on the limit step 142, preventing the operator from accidentally pressing the button 14 to cause unnecessary opening or other malfunction operations, thereby effectively improving the safety of the operation process.

[0054] The locking plate 24 is provided with a sliding groove 247 , and the key 22 is linked to the locking plate 24 via the sliding groove 247 , and the key 22 drives the locking plate 24 to move by rotating.

[0055] The sliding groove 247 provides a fixed sliding track for the lock body 21, ensuring smooth movement during operation, avoiding shaking or jamming, and improving the smoothness and stability of the operation.

[0056] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

[0057] Although the invention has been described with reference to several specific embodiments, it should be understood that the invention is not limited to the specific embodiments disclosed. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A ring main unit outlet program lock interlocking device, characterized in that: The invention comprises an operating mechanism, wherein the operating mechanism is provided with a mounting plate for mounting a locking mechanism and an operating shaft arranged on the mounting plate, the locking mechanism comprises a lock body, a key and a micro switch arranged on one side of the lock body, a locking plate linked to the key is arranged between the lock body and the mounting plate, a limiting mechanism is arranged at the rear side of the operating mechanism, and the limiting mechanism comprises a locking arm extending to the locking plate and capable of selecting a locking position with the locking arm; When the operating mechanism is in the open state, the locking arm and the locking plate are in the unlocked state, and the key can be pulled out after the locking plate is moved by rotation. The locking plate triggers the micro switch to cut off the power supply and blocks the operating shaft so that it cannot be inserted into the handle; When the operating mechanism is in the closed state, the locking arm and the locking plate are in a locked state, and the key cannot be rotated and pulled out and drive the locking plate to move.

2. The ring main unit outlet program lock interlocking device according to claim 1, characterized in that: The operating mechanism includes an output plate arranged on the rear side, the limiting mechanism includes a fixed plate fixedly installed above the operating output plate, a sliding column is slidably provided on the fixed plate, a spring is sleeved on the sliding column, the locking arm is fixedly provided on the top of the sliding column, and the sliding column drives the locking arm and the locking plate to unlock in the open state through its own weight and the elastic force of the spring.

3. The ring main unit outlet program lock interlocking device according to claim 2, characterized in that: A horizontally arranged push plate is provided outside the fixed plate extending from the bottom of the sliding column. The output plate rotates and abuts against the push plate in the closed state, thereby pushing the sliding column to slide upward, driving the locking arm to move upward and lock the locking plate so that it cannot move.

4. The ring main unit outlet program lock interlocking device according to claim 2, characterized in that: A limit pin located below the spring is fixed on the sliding column, and the limit pin abuts against the inner wall of the fixing plate to limit the moving stroke of the locking arm.

5. The ring main unit outlet program lock interlocking device according to claim 1, characterized in that: A vertical limit plate is provided on the locking plate, and a hook is provided at the end of the locking arm. The hook abuts against the limit plate in the open state so that the locking plate cannot move. The hook releases the abutment with the limit plate in the closed state so that it can pass through the gap between the locking arm and the locking plate, and the locking plate can move.

6. The ring main unit outlet program lock interlocking device according to claim 1, characterized in that: The locking plate includes a plate body and a first trigger part and a second trigger part arranged on the plate body, the first trigger part extends to one side of the lock body to trigger the micro switch, the second trigger part is bent, and the second trigger part includes a shielding part, which is located in front of the operating shaft in the open state and is used to shield the operating shaft from being inserted into the handle.

7. The ring main unit outlet program lock interlocking device according to claim 6, characterized in that: A button for closing the switch is provided on the mounting plate, and the button includes a push shaft provided on the rear side, and a limit step is provided on the push shaft. The locking plate also includes a third trigger portion, and the third trigger portion extends in a bent shape to the limit step of the push shaft. In the closed state, the third trigger portion slides to the front of the limit step so that it cannot be pressed.

8. The ring main unit outlet program lock interlocking device according to claim 1, characterized in that: The locking plate is provided with a sliding groove, the key is linked to the locking plate via the sliding groove, and the key drives the locking plate to move by a rotating action.

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