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 utility model relates to a kind of ring main unit outgoing line program lock interlocking device, belong to ring main unit field. BACKGROUND

[0002] Now in distribution network system, to improve power supply reliability and stability, many adopt double power supply loop power supply, when one power system fails, it can be quickly switched to another power system power supply, ensure uninterrupted power supply.

[0003] In power system, two power systems exist certain difference due to frequency, voltage, current, power factor, do not allow to be directly connected together to supply power. When normal power supply, only one power system plays a role, and another power system is used as standby power supply. This needs to add locking device between two power systems, to ensure that only one power system provides power at the same time.

[0004] In existing ring main unit, all have program lock locking function, and can realize locking function when double power supply, i.e. only one outgoing line cabinet can be closed at the same time, and another outgoing line cabinet cannot be operated.

[0005] But traditional program lock can only ensure that unlocking key is not pulled out, such as the Chinese utility model with publication number CN211980461U provides a kind of solid ring main unit program lock interlocking device, including operating mechanism, mounting frame and lock body, the lock body is fixed on the operating mechanism through the mounting frame, the operating mechanism is connected with operating shaft, the operating shaft is equipped with limiting structure, the lock body is connected with baffle assembly through lock rod, the baffle assembly includes outside baffle and inside baffle, the operating shaft rotates with the opening and closing of the operating mechanism, to drive the limiting structure to switch between the position of blocking the inside baffle and the position of not blocking the inside baffle, the lock rod on the lock body moves left and right with the rotation of key, to drive outside baffle and inside baffle to move left and right, key can only be pulled out after rotating in place, in the rotation process of key, when the inside baffle is blocked by the limiting structure, the outside baffle does not shield the operating shaft, key is not rotated in place, cannot be pulled out, when the inside baffle is not blocked by the limiting structure, the outside baffle shields the operating shaft, key rotates in place, can be pulled out.

[0006] This structure cannot guarantee that unlocking key is not pulled out, but there is no linkage with other structures, cannot avoid the problem of forcibly inserting handle driving operating shaft, can produce safety problem, affect normal use. UTILITY MODEL CONTENTS

[0007] The utility model aims at overcoming the shortcomings and deficiencies of prior art, and provides a kind of ring main unit outgoing line program lock interlocking device.

[0008] A ring main unit outgoing line program lock interlocking device, comprising an operating mechanism, the operating mechanism is provided with a mounting plate for mounting a locking mechanism and an operating shaft provided on the mounting plate, the locking mechanism comprises a lock body, a key and a micro switch provided on one side of the lock body, a locking plate linked with 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, the limiting mechanism comprises a locking arm extending to the locking plate and selectively locked with the locking plate;

[0009] In the off state of the operating mechanism, the locking arm and the locking plate are in an unlocked state, the key can be pulled out after rotating and moving the locking plate, 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] In the on state of the operating mechanism, the locking arm and the locking plate are in a locked state, the key cannot be rotated and pulled out and cannot drive the locking plate to move.

[0011] By arranging the locking plate linked with the key between the lock body and the mounting plate, and combining the design of the locking arm in the limiting mechanism, the situation of forcibly inserting the handle to drive the operating shaft can be effectively avoided, and safety accidents caused by illegal operation can be prevented. 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 is cut off, further improving the operation safety and reliability of the equipment. The locking mechanism designed in the utility model can ensure that only one power supply system is in working state at the same time, and the other power supply system remains standby, thereby meeting the demand of double power supply system locking switching, improving the reliability and stability of the distribution network system. Compared with the traditional program lock, the utility model realizes the unity of electrical linkage, mechanical locking and misoperation protection functions through the synergistic effect of the locking plate, the micro switch and the limiting mechanism, greatly improving the safety, reliability and practicality of the ring main unit outgoing line program lock interlocking device.

[0012] Preferably, the operating mechanism comprises an output plate arranged at the rear side, the limiting mechanism comprises a fixed plate fixedly installed above the output plate, a sliding column is slidably arranged on the fixed plate, a spring is sleeved on the sliding column, the locking arm is fixedly arranged at the top of the sliding column, and the sliding column drives the locking arm to be unlocked with the locking plate in the off state by gravity.

[0013] By the design of the sliding column, the sliding column is driven to complete unlocking under the action of gravity, without the need for additional operation, so that the device can automatically complete unlocking in the open state, simplifying the operation process and improving the operation convenience. 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 accurate and reliable action of the locking mechanism and preventing faults caused by mechanical jamming. By using the self-weight of the sliding column to realize the unlocking function of the limiting arm, the need for a complex driving device is avoided, the complexity of system design and manufacturing cost are reduced, and the stability of the structure is improved.

[0014] Further, the sliding column extends a fixed plate at the bottom, and a horizontally arranged push plate is arranged outside the fixed plate. The output plate is in abutment with the push plate in the closed state, thereby pushing the sliding column to slide upward and driving the locking arm to move upward to be locked by the locking plate.

[0015] In the closed state, the output plate is in abutment with the push plate by rotating, pushing the sliding column to slide upward, thereby driving the locking arm to move upward and be locked by the locking plate. This design ensures that the locking plate cannot move in the closed state, further prevents key misrotation or unauthorized operation, and enhances the safety and reliability of operation.

[0016] Further, a limiting pin below the spring is fixed on the sliding column, and the limiting pin is in abutment with the inner wall of the fixed plate for limiting the movement stroke of the locking arm.

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

[0018] Preferably, a limiting plate in a vertical state is arranged on the locking plate, and a hook is arranged at the end of the locking arm. The hook is in abutment with the limiting plate in the open state to make the locking plate unable to move, and the hook is out of abutment with the limiting plate in the closed state to make the locking plate 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 existence of the limiting plate provides physical obstruction, 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 limiting plate is in a pure mechanical form, the number of components is small, the device has high durability, the maintenance cost caused by the failure of complex linkage mechanism is reduced, and on-site adjustment and maintenance are facilitated.

[0020] Preferably, the locking plate comprises 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, and the second trigger portion is in a bent shape, and the second trigger portion comprises a shielding portion arranged in front of the operating shaft in the open state to shield the operating shaft so that the operating shaft cannot be inserted into the handle.

[0021] The first trigger portion extends to one side of the lock body to trigger the micro switch when the locking plate moves, which can realize electrical interlocking function, ensure power cut-off in the open state to prevent accidental power-on operation, and remove the triggering state in the closed state to restore power supply and ensure the correctness of the operation sequence. The second trigger portion forms a shielding portion through the bending design, which shields the operating shaft in the open state to prevent the handle from being inserted, ensuring that the operating mechanism cannot be misoperated, thereby realizing mechanical interlocking locking function and further improving safety. Through the precise design of the first trigger portion and the second trigger portion, it can be ensured that each open and close operation can accurately trigger the micro switch and complete the shielding or removal action, preventing functional failure caused by errors and ensuring the operation reliability of the device.

[0022] Further, the mounting plate is provided with a button for closing, the button comprises a pressing shaft arranged on the rear side, the pressing shaft is provided with a limiting step, and the locking plate further comprises a third trigger portion, the third trigger portion is in a bent shape and extends to the limiting step of the pressing shaft, and the third trigger portion is slidably moved to the front of the limiting 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 double interlocking protection of electricity and machinery. The third trigger portion is located in front of the limiting step in the closed state, which forms physical limiting for the limiting step, preventing the operator from pressing the button by mistake to cause unnecessary opening or other misoperation, effectively improving the safety of the operation process.

[0024] Preferably, the locking plate is provided with a sliding groove, the key is connected with the locking plate in linkage through the sliding groove, and the key drives the locking plate to move through the rotating action.

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

[0026] The utility model discloses the beneficial effect is as follows: through setting up the locking plate that links with the key between the lock body and the mounting plate, combining the locking arm design in the limiting mechanism, can effectively avoid forcibly inserting handle drive operation shaft's condition, prevents the security accident caused by illegal operation. Through the linkage design of locking plate and micro -switch, not only realizes mechanical locking function, can cut off the power supply still, further promotes the operation safety and reliability of equipment. The locking mechanism of the utility model design can ensure that only one power supply system is in working condition at the same time, and the other power supply system keeps standby, thereby satisfying the demand of double power supply system locking switching, improves the reliability and stability of distribution network system. Compared with the traditional program lock, the utility model realizes the unity of electrical linkage, mechanical locking and misoperation protection function through the synergies of locking plate, micro -switch and limiting mechanism, greatly improves the safety, reliability and practicality of ring main unit outlet program lock interlocking device. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying the creative labor, according to these drawings, other drawings still belong to the scope of the utility model.

[0028] Figure 1 It is the main body structure diagram of the utility model;

[0029] Figure 2 It is Figure 1 The detail enlarged view of A in the middle;

[0030] Figure 3 It is the structure diagram of removing part;

[0031] Figure 4 It is Figure 3 The detail enlarged view of B in the middle;

[0032] Figure 5 It is the structure diagram of the utility model removing lock body;

[0033] Figure 6 It is the rear view angle structure diagram of the utility model;

[0034] In the diagram, 1. Operating mechanism; 11. Mounting plate; 12. Operating shaft; 13. Output plate; 14. Button; 141. Pressing shaft; 142. Limiting step; 2. Locking mechanism; 21. Lock body; 22. Key; 23. Micro switch; 24. Locking plate; 241. Limiting plate; 243. First trigger part; 244. Second trigger part; 245. Blocking part; 246. Third trigger part; 247. Sliding groove; 3. Limiting mechanism; 31. Locking arm; 311. Hook; 33. Fixing plate; 34. Sliding column; 35. Spring; 36. Limiting pin; 37. Push plate. Detailed Implementation

[0035] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0036] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0037] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0038] like Figures 1-6 The diagram shows an embodiment of a ring main unit outgoing line program lock interlocking device of the present invention, which includes an operating mechanism. The operating mechanism is provided with a mounting plate 11 for mounting a locking mechanism 2 and an operating shaft 12 on the mounting plate 11. The locking mechanism 2 includes a lock body 21, a key 22 and a micro switch 23 on one side of the lock body 21. A locking plate 24 that is linked with the key 22 is provided between the lock body 21 and the mounting plate 11. A limiting mechanism 3 is provided on the rear side of the operating mechanism. The limiting mechanism 3 includes a locking arm 31 that extends to the locking plate 24 and has a selectable locking position.

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

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

[0041] By setting the locking plate 24 linked with the key 22 between the lock body 21 and the mounting plate 11, in combination with the design of the locking arm 31 in the limiting mechanism 3, the forcibly inserted handle driving operation shaft 12 can be effectively avoided, and the safety accidents caused by illegal operation can be prevented. 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 is cut off, and the operation safety and reliability of the equipment are further improved. The locking mechanism 2 designed in the utility model can ensure that only one power supply system is in working state at the same time, and the other power supply system remains standby, thereby meeting the demand of double power supply system locking switching, and improving the reliability and stability of the distribution network system. Compared with the traditional program lock, the utility model realizes the unity of electrical linkage, mechanical locking and misoperation protection functions through the synergistic effect of the locking plate 24, the micro switch 23 and the limiting mechanism 3, and greatly improves the safety, reliability and practicability of the ring main unit outlet program lock interlocking device.

[0042] The operating mechanism comprises an output plate 13 arranged on the rear side, the limiting mechanism 3 comprises a fixed plate 33 fixedly installed above the output plate 13, a sliding column 34 is slidably arranged on the fixed plate 33, a spring 35 is sleeved on the sliding column 34, the locking arm 31 is fixedly arranged on the top of the sliding column 34, and the sliding column 34 drives the locking arm 31 to be unlocked from the locking plate 24 in the off state through the self weight.

[0043] Through the design of the sliding column 34, the locking arm 31 is driven to be unlocked under the action of gravity of the sliding column 34, without the need for additional operation, so that the device can automatically complete unlocking in the off state, the operation process is simplified, and the operation convenience is improved. When the sliding column 34 moves under the action of external force, the spring 35 provides a rebound force, so that the locking arm 31 can be stably reset, thereby ensuring that the locking mechanism 2 is accurate and reliable in action, and preventing faults caused by mechanical jamming. Through the use of the self weight of the sliding column 34 to realize the unlocking function of the limiting arm, the need for a complex driving device is avoided, the complexity of system design and 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 is provided with a horizontally arranged push plate 37, and the output plate 13 rotates and abuts against the push plate 37 in the on state, so as to push the sliding column 34 to slide upward, and drive the locking arm 31 to move upward to lock the locking plate 24 so that it cannot move.

[0045] In the closed state, the output plate 13 abuts against the pushing plate 37 through rotation, and the sliding column 34 is pushed to slide upward, thereby driving the locking arm 31 to move upward and lock the locking plate 24. This design ensures that the locking plate 24 cannot move in the closed state, further prevents the key 22 from being mistakenly rotated or unauthorized operation, and enhances the safety and reliability of operation.

[0046] The sliding column 34 is fixed with a limiting pin 36 below the spring 35, which abuts against the inner wall of the fixed plate 33 to limit the movement stroke of the locking arm 31.

[0047] The limiting 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 designed range during operation, and avoiding excessive or insufficient movement to cause device failure.

[0048] The locking plate 24 is provided with a limiting plate 241 in a vertical state, and the end of the locking arm 31 is provided with a hook 311. In the open state, the hook 311 abuts against the limiting plate 241 to prevent the locking plate 24 from moving. In the closed state, the hook 311 is disengaged from the limiting plate 241, so that the locking plate 24 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 limiting plate 241 provides physical obstruction, so that the locking plate 24 cannot move even if it is subjected to external force, eliminating the unlocking problem caused by external force interference or misoperation, and further ensuring the safety of equipment operation. The structure design of the hook 311 and the limiting plate 241 is in a pure mechanical form, with fewer components and high durability of the device, reducing the maintenance cost caused by failure of complex linkage mechanism, and facilitating 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 provided on the plate body. The first trigger portion 243 extends to one side of the lock body 21 for triggering the micro switch 23. The second trigger portion 244 is in a bent shape and 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 so that it cannot be inserted into the handle.

[0051] The first trigger part 243 extends to one side of the lock body 21, and is used for triggering the micro switch 23 when the locking plate 24 moves, so that the electrical interlocking function is realized, the power supply is cut off in the open state, and the accidental power-on operation is prevented; in the closed state, the triggering state is released, the power supply is restored, and the correctness of the operation sequence is ensured. The second trigger part 244 is formed by bending design to form a shielding part 245, which shields the operating shaft 12 in the open state, prevents the handle from being inserted, ensures that the operating mechanism cannot be misoperated, and thus the mechanical interlocking locking function is realized, and the safety is further improved. Through the accurate design of the first trigger part 243 and the second trigger part 244, it can be ensured that each open and close operation can accurately trigger the micro switch 23 and complete the shielding or releasing action, prevent the function from failing due to errors, and ensure the operation reliability of the device.

[0052] The mounting plate 11 is provided with a button 14 for closing, the button 14 comprises a pressing shaft 141 arranged on the rear side, the pressing shaft 141 is provided with a limiting step 142, and the locking plate 24 further comprises a third trigger part 246, the third trigger part 246 extends to the limiting step 142 of the pressing shaft 141 in a bent shape, and the third trigger part 246 is slidably moved to the front of the limiting step 142 in the closed state, so that the limiting step 142 cannot be pressed.

[0053] In the closed state, the movement of the locking plate 24 directly limits the operation of the button 14, so that only the button 14 can be used in a specific state, and the electrical and mechanical double interlocking protection is realized. The third trigger part 246 is located in front of the limiting step 142 in the closed state, and forms physical limiting for the limiting step 142, so that the operator cannot press the button 14 by mistake, unnecessary opening or other misoperation is avoided, and the safety of the operation process is effectively improved.

[0054] The locking plate 24 is provided with a sliding groove 247, the key 22 is connected with the locking plate 24 in linkage through the sliding groove 247, and the key 22 drives the locking plate 24 to move through a rotating action.

[0055] The sliding groove 247 provides a fixed sliding track for the lock body 21, so that the movement is stable during the operation process, the shaking or jamming phenomenon is avoided, and the smoothness and stability of the operation are improved.

[0056] The above only discloses the preferred embodiment of the utility model, and of course cannot limit the right scope of the utility model, therefore, the equivalent changes made according to the utility model claims still belong to the range covered by the utility model.

[0057] Although the utility model has been described with reference to a number of specific embodiments, it should be understood that the utility model is not limited to the disclosed specific embodiments. The utility model 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 outgoing line program interlocking device, characterized in that: The device includes an operating mechanism, which has a mounting plate for mounting a locking mechanism and an operating shaft on the mounting plate. The locking mechanism includes a lock body, a key, and a micro switch on one side of the lock body. A locking plate that is linked to the key is provided between the lock body and the mounting plate. A limiting mechanism is provided at the rear of the operating mechanism. The limiting mechanism includes a locking arm that extends to the locking plate and has a selectable locking position. When the operating mechanism is in the open state, the locking arm and the locking plate are in the unlocked state. After the key is turned, the locking plate can be pulled out. The locking plate triggers a micro switch to cut off the power and block the operating shaft so that the handle cannot be inserted. When the operating mechanism is in the closed state, the locking arm and the locking plate are locked, and the key cannot be turned out or moved.

2. The ring main unit outgoing line program interlocking device as described in claim 1, characterized in that: The operating mechanism includes an output plate located on the rear side, and the limiting mechanism includes a fixed plate fixedly installed above the operating output plate. A sliding column is slidably provided on the fixed plate, and a spring is sleeved on the sliding column. The locking arm is fixedly provided on the top of the sliding column. The sliding column drives the locking arm to unlock from the locking plate by its own weight in the open state.

3. The ring main unit outgoing line program interlocking device as described in claim 2, characterized in that: A horizontally positioned push plate extends from the bottom of the sliding column beyond the fixed plate. When the output plate is in the closed state, it rotates and abuts against the push plate, thereby pushing the sliding column upward and causing the locking arm to move upward and lock onto the locking plate, preventing it from moving.

4. The ring main unit outgoing line program interlocking device as described in claim 2, characterized in that: A limiting pin is fixed on the sliding column below the spring, and the limiting pin abuts against the inner wall of the fixed plate to limit the movement of the locking arm.

5. The ring main unit outgoing line program interlocking device as described in claim 1, characterized in that: The locking plate is provided with a vertically positioned limit plate, and the end of the locking arm is provided with a hook. When the circuit is open, the hook abuts against the limit plate to prevent the locking plate from moving. When the circuit is closed, the hook releases its abutment from the limit plate, allowing it to pass through the gap between the locking arm and the locking plate, and the locking plate can move.

6. The ring main unit outgoing line program interlocking device as described in claim 1, characterized in that: The locking plate includes a plate body and a first trigger part and a second trigger part disposed on the plate body. The first trigger part extends to one side of the lock body to trigger a micro switch. The second trigger part is bent and includes a blocking part. The blocking part is located in front of the operating shaft in the open state to block the operating shaft so that the handle cannot be inserted.

7. The ring main unit outgoing line program interlocking device as described in claim 6, characterized in that: The mounting plate is equipped with a button for closing the circuit breaker. The button includes an actuating shaft located on the rear side, and a limiting step is provided on the actuating shaft. The locking plate also includes a third trigger part, which extends in a bent shape to the limiting step of the actuating shaft. When the circuit breaker is closed, the third trigger part slides to the front of the limiting step so that it cannot be pressed.

8. The ring main unit outgoing line program interlocking device as described in claim 1, characterized in that: The locking plate is provided with a sliding groove, and the key is linked to the locking plate through the sliding groove. The key moves the locking plate by rotating.

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