Temporary unlocking mechanical device for closing and locking

Abstract

The invention provides a temporary unlocking mechanical device for closing and locking. The temporary unlocking mechanical device comprises a rack, a swing mechanism, a driving mechanism and a shifting assembly, the rack is arranged in the switch cabinet; the swinging mechanism is arranged on the rack; the swing mechanism is provided with a swing end capable of moving in the vertical direction, and the swing end is provided with a first position and a second position located above the first position. The swing mechanism is further provided with a first pushing end used for driving the swing end to move to the first position and a second pushing end used for driving the swing end to move to the second position. The driving mechanism is arranged on the switch cabinet and is provided with pushing parts which can respectively correspond to the first pushing end and the second pushing end; the shifting assembly is arranged on the rack in the vertical direction in a sliding mode and hinged to the swing end, and the shifting assembly is used for moving to the second position along with the swing end so as to push the locking limiting column. According to the closing and locking temporary unlocking mechanical device provided by the invention, the closing electromagnet does not need to be temporarily electrified, and the equipment scratching risk is reduced.

Description

Technical Field

[0001] This invention belongs to the field of electrical equipment technology, specifically relating to a mechanical device for temporary unlocking of a closing interlock. Background Technology

[0002] During the energization of high-voltage equipment in substations, to prevent accidental closing of the switchgear when transitioning from the test position to the operating position, a closing interlocking circuit must be installed on the secondary electrical circuit of the switchgear. The closing interlocking structure uses a closing electromagnet as its core component. When energized, the closing electromagnet generates magnetic force, attracting the metal limit rod, allowing the switch to close normally. When the closing electromagnet is de-energized, the metal rod remains extended, blocking the closing linkage and thus forming the closing interlock. During substation maintenance of the switchgear, workers need to pull the switchgear to the maintenance position, disconnect the aviation connector, and then perform maintenance on the circuit breaker. At this time, the closing electromagnet will inevitably be de-energized. The key requirement for maintenance is to perform a closing test on the circuit breaker, which requires the closing button to operate normally. Therefore, it is necessary to temporarily unlock the manual closing button, temporarily releasing the metal rod's interlocking state, allowing the closing linkage to operate.

[0003] In existing technologies, releasing the manual closing button's limit switch on the closing electromagnet typically involves temporarily energizing the electromagnet. However, the manual closing button vibrates when activated, easily dislodging temporary wiring, leading to poor contact or power outages, hindering maintenance. Furthermore, prolonged energization of the interlocking circuit can burn out the closing electromagnet's coil, increasing both maintenance workload and overall difficulty. Without temporary energization, the locking limit pin cannot be released. Typically, a screwdriver is used to repeatedly pry open the metal limit pin while pressing the closing button. This temporary unlocking method easily scratches or bumps the equipment, causing damage. Moreover, the switch panel must be removed before operation and reinstalled afterward; repeated disassembly and reassembly not only increase maintenance time and costs but also increase the likelihood of contamination and moisture damage to the operating mechanism, affecting equipment performance.

[0004] Therefore, there is an urgent need for a temporary unlocking method to solve the problem that the closing electromagnet is easily burned out due to prolonged energization when unlocking under the condition that the interlocking circuit is energized, and at the same time to solve the problem of repeated disassembly and reassembly of the switch panel when unlocking by manually prying open the metal limit post under the condition that the interlocking circuit is not energized. Summary of the Invention

[0005] This invention provides a mechanical device for temporary unlocking of closing interlock, which aims to improve the safety and ease of operation of temporary unlocking of closing interlock during the maintenance of substation switchgear, and to improve maintenance efficiency.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a mechanical device for temporary unlocking of a closing interlock includes a frame, a swing mechanism, a drive mechanism, and a toggle assembly; the frame is installed inside a switch cabinet; the swing mechanism is installed on the frame; the swing mechanism has a swing end that can move in the vertical direction, the swing end having a first position and a second position above the first position; the swing mechanism also has a first push end for driving the swing end to move to the first position, and a second push end for driving the swing end to move to the second position; the drive mechanism is installed on the switch cabinet and has a pushing part that corresponds to the first push end and the second push end respectively; the toggle assembly is slidably installed on the frame in the vertical direction and is hinged to the swing end, the toggle assembly being used to push the locking limit post as the swing end moves to the second position.

[0007] In one possible implementation, the drive mechanism includes a slide cylinder, a rotating component, and a first elastic component; the slide cylinder is mounted on the switch cabinet; one end of the rotating component passes through the slide cylinder and extends into the switch cabinet, and the inner end of the rotating component is provided with a pressure plate, which extends radially along the rotating component to form a pushing part; the outer end of the rotating component is provided with a limiting circular plate; the first elastic component is located outside the switch cabinet and is sleeved on the rotating component; the first elastic component abuts against the switch cabinet and the limiting circular plate respectively, and is used to spring the limiting circular plate so that the rotating component maintains a continuous outward movement tendency.

[0008] In some embodiments, a spiral groove is provided on the side wall of the rotating component, and the two ends of the spiral groove are connected by a straight groove, which is arranged in the same direction as the axis of the rotating component. Correspondingly, a limiting block that can be adapted to the spiral groove and the straight groove is provided on the slide cylinder. The end of the straight groove near the limiting circular plate is designated as the first end, and the end away from the limiting circular plate is designated as the second end. When the rotating component slides into the switch cabinet, the limiting block slides along the straight groove towards the first end, and at the same time, the pressure plate pushes the first or second pushing end. When the rotating component slides out of the switch cabinet, the limiting block slides through the spiral groove towards the second end, and the rotating component drives the pressure plate to pitch and rotate, so that the pressure plate corresponds to the second or first pushing end.

[0009] For example, the height of the first end is lower than the height of the second end.

[0010] For example, a slide rail is provided on the slide cylinder along its radial direction; a limiting block is slidably disposed in the slide rail; a spring piece is provided in the slide rail to keep the limiting block having a tendency to continuously move towards the bottom surface of the spiral slide rail or the straight slide rail.

[0011] In one possible implementation, the swing mechanism includes a mounting frame, a reversing assembly, and a swing assembly; the mounting frame is mounted on a frame; the reversing assembly is rotatably mounted on the frame with its rotation axis horizontal; the reversing assembly has push columns spaced parallel to the rotation axis; a first push end and a second push end are both located on the reversing assembly and on the side of the reversing assembly away from the push columns; the swing assembly is slidably connected along the vertical direction to a clearance slot on the mounting frame; the swing assembly has an elastic locking part slidably connected to the push columns; the swing end is located on the swing assembly and on the outside of the mounting frame.

[0012] In some embodiments, the reversing assembly includes a swing member and a push rod; the swing member is rotatably mounted on a mounting frame and has a push post; there are two push rods, which are respectively inclinedly mounted at the upper and lower ends of the swing member and respectively form a first push end and a second push end, with the first push end located below the second push end.

[0013] For example, the swing assembly includes a swing shaft, a push ring, a second elastic element, and an elastic telescopic rod; one end of the swing shaft has a slot along its axial direction, and the other end slides against the clearance slot in the mounting bracket; the push ring is slidably sleeved on the swing shaft; the second elastic element is sleeved on the swing shaft; the second elastic element abuts against the swing shaft and the push ring respectively, and is used to spring the push ring so that the swing shaft maintains a tendency to continuously move towards the clearance slot, and the second elastic element, the swing shaft, and the push rod combine to form an elastic locking part; one end of the elastic telescopic rod is connected to the swing shaft, and the other end extends out after passing through the clearance slot, and the elastic telescopic rod is coaxially arranged with the swing shaft.

[0014] For example, the actuating assembly includes a slider and an actuating rod; the slider is slidably mounted on a slide rail on the frame in a vertical direction; the slider is hinged to the extended end of the elastic telescopic rod; the actuating rod is mounted on the slider, and its extended end corresponds to the limiting post.

[0015] In one possible implementation, the lever is equipped with a roller that rolls in conjunction with the slide rail.

[0016] The beneficial effects of the temporary unlocking mechanical device for closing interlock provided by this invention are as follows: Compared with the prior art, this invention does not require temporary energization of the closing electromagnet, and forms a linkage mechanical structure for temporary unlocking through a frame, a swing mechanism, a drive mechanism, and a toggle assembly. The pushing part of the drive mechanism acts on the pushing end of the swing mechanism, causing the swing end to move, which drives the toggle assembly to push the locking limit post to achieve unlocking. This avoids the problems of the closing electromagnet coil burning out due to prolonged energization and poor contact caused by temporary wiring falling off due to vibration. This invention does not require the removal of the switch panel. By setting the drive mechanism on the switch cabinet, the pushing part of the drive mechanism corresponds to the pushing end of the swing mechanism, and the toggle assembly slides along the frame and is hinged to the swing end. Operating the drive mechanism can make the toggle assembly act on the locking limit post, eliminating the steps of repeatedly disassembling and assembling the switch panel and reducing the risk of equipment scratches, contamination, and moisture. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the switch cabinet used in an embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of the temporary unlocking mechanical device for closing interlock provided in an embodiment of the present invention; Figure 3 This is a front view schematic diagram of the driving mechanism used in an embodiment of the present invention; Figure 4 This is a schematic diagram of the main structure of the rotating component used in an embodiment of the present invention; Figure 5 This is a three-dimensional structural diagram of the swing mechanism used in the embodiments of the present invention; Figure 6 This is a three-dimensional structural diagram of the commutation component and the swing component used in the embodiments of the present invention; Figure 7 This is a front view of the structure when the swing axis is in the first position, as used in an embodiment of the present invention. Figure 8 This is a front view of the structure when the swing axis is in the second position, as used in an embodiment of the present invention. Figure 9 This is a three-dimensional structural diagram of the toggle assembly used in an embodiment of the present invention.

[0018] In the diagram: 10. Frame; 11. Slide rail; 12. Rotating rod; 20. Swing mechanism; 21. Mounting bracket; 211. Clearance strip; 22. Reversing assembly; 221. Swing component; 222. Push rod; 223. Push column; 23. Swing assembly; 231. Swing shaft; 232. Push ring; 233. Second elastic component; 234. Elastic telescopic rod; 30. Drive mechanism; 31. Slide cylinder; 311. Limit block; 312. Slide track; 313. Spring; 32. Rotating component; 321. Spiral slide groove; 322. Straight slide groove; 33. First elastic component; 34. Pressure plate; 35. Limiting circular plate; 40. Actuating assembly; 41. Slider; 42. Actuating rod; 43. Roller; 50. Switch cabinet; 51. Cabinet door; 52. Limiting column; 53. Manual closing button. Detailed Implementation

[0019] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0020] It should be noted that when an element is referred to as being "set on" another element, it can be directly on or indirectly on the other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the invention, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0021] Please refer to the following: Figure 1 and Figure 2 The present invention will now describe the temporary unlocking mechanism for closing interlocking. The temporary unlocking mechanism for closing interlocking includes...

[0022] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a temporary unlocking mechanical device for closing interlocking is provided, comprising a frame 10, a swing mechanism 20, a drive mechanism 30, and a toggle assembly 40; the frame 10 is disposed within a switch cabinet 50; the swing mechanism 20 is disposed on the frame 10; the swing mechanism 20 has a swing end that can move in the vertical direction, the swing end having a first position and a second position located above the first position; the swing mechanism 20 also has a first push end for driving the swing end to move to the first position, and a second push end for driving the swing end to move to the second position; the drive mechanism 30 is disposed on the switch cabinet 50 and has a pushing part that can respectively correspond to the first push end and the second push end; the toggle assembly 40 is slidably disposed on the frame 10 in the vertical direction and is hinged to the swing end, the toggle assembly 40 being used to push the locking limit post 52 as the swing end moves to the second position.

[0023] It should be noted that when the manual closing button 53 needs to be temporarily unlocked, the pushing part of the drive mechanism 30 acts on the second push end, driving the swing end of the swing mechanism 20 to move upward from the first position to the second position. Since the toggle component 40 is hinged to the swing end and slides vertically along the frame 10, the movement of the swing end will drive the toggle component 40 to slide upward synchronously. Finally, the toggle component 40 pushes the locking limit post 52, releasing the closing lockout. When the closing lockout needs to be restored, the pushing part of the drive mechanism 30 switches to act on the first push end, driving the swing end to move downward from the second position to the first position. The toggle component 40 slides downward synchronously with the swing end, no longer pushing the locking limit post 52. The locking limit post 52 returns to its original position, and the closing lockout is re-established.

[0024] Compared with existing technologies, the temporary unlocking mechanical device for closing interlocking provided by this invention does not require temporary energization of the closing electromagnet. It forms a linked mechanical structure for temporary unlocking via a frame 10, a swing mechanism 20, a drive mechanism 30, and a toggle assembly 40. The pushing part of the drive mechanism 30 acts on the pushing end of the swing mechanism 20, causing the swing end to move. This drives the toggle assembly 40 to push the locking limit post 52 to unlock the device. This avoids problems such as burnt-out of the closing electromagnet coil due to prolonged energization and poor contact caused by vibration-induced detachment of temporary wiring. This invention eliminates the need to remove the switch panel. By setting the drive mechanism 30 on the switch cabinet 50, with the pushing part of the drive mechanism 30 corresponding to the pushing end of the swing mechanism 20, and the toggle assembly 40 sliding along the frame 10 and hinged to the swing end, operating the drive mechanism 30 allows the toggle assembly 40 to act on the locking limit post 52. This eliminates the need for repeated disassembly and reassembly of the switch panel, reducing the risk of equipment scratches, contamination, and moisture damage.

[0025] Please see Figure 2 and Figure 3The drive mechanism 30 includes a slide cylinder 31, a rotating member 32, and a first elastic member 33. The slide cylinder 31 is mounted on the switch cabinet 50. One end of the rotating member 32 passes through the slide cylinder 31 and extends into the switch cabinet 50. The inner end of the rotating member 32 is provided with a pressure plate 34, which extends radially along the rotating member 32 to form a pushing part. The outer end of the rotating member 32 is provided with a limiting circular plate 35. The first elastic member 33 is located outside the switch cabinet 50 and is sleeved on the rotating member 32. The first elastic member 33 abuts against both the switch cabinet 50 and the limiting circular plate 35, and is used to spring the limiting circular plate 35, so that the rotating member 32 maintains a continuous outward movement tendency.

[0026] It should be noted that when the swing mechanism 20 needs to be driven, the outer end of the rotating member 32 is pushed into the switch cabinet 50. The rotating member 32 slides along the slide cylinder 31 into the cabinet, causing the inner pressure plate 34 to move synchronously. This causes the pressure plate 34 to contact the first or second pushing end of the swing mechanism 20 and apply a pushing force, thereby driving the swing end to move. At this time, the first elastic member 33 is compressed, storing elastic potential energy. When the pushing force on the rotating member 32 is released, the first elastic member 33 releases its potential energy, causing the limiting circular plate 35 to spring and drive the rotating member 32 to move along the slide cylinder 31 out of the switch cabinet 50. This causes the pressure plate 34 to disengage from the pushing end, and the rotating member 32 returns to its initial position, preparing for the next operation.

[0027] Stable linear movement is achieved through the cooperation of the slide cylinder 31 and the rotating component 32, ensuring precise and controllable force exerted by the pushing unit on the first and second pushing ends, thus avoiding operational deviations. The first elastic element 33 enables the rotating component 32 to automatically reset without manual adjustment, simplifying the operation process. The limiting circular plate 35 at the outer end of the rotating component 32 provides a force support point for the first elastic element 33 and limits the maximum outward movement distance of the rotating component 32, preventing it from detaching from the slide cylinder 31 and improving the safety of the mechanism. The entire drive mechanism 30 can be operated outside the switch cabinet 50 without removing the panel. Furthermore, the use of pure mechanical transmission instead of electrical wiring avoids the risk of poor contact or coil burnout, further enhancing the reliability of the device.

[0028] Please see Figure 3 and Figure 4The rotating component 32 has a spiral groove 321 on its side wall, and the two ends of the spiral groove 321 are connected by a straight groove 322. The straight groove 322 is arranged in the same direction as the axis of the rotating component 32. Correspondingly, a limiting block 311 that can be adapted to the spiral groove 321 and the straight groove 322 is provided on the slide cylinder 31. The end of the straight groove 322 near the limiting circular plate 35 is designated as the first end, and the end away from the limiting circular plate 35 is designated as the second end. When the rotating component 32 slides into the switch cabinet 50, the limiting block 311 slides along the straight groove 322 towards the first end, and at the same time, the pressure plate 34 pushes the first or second pushing end. When the rotating component 32 slides out of the switch cabinet 50, the limiting block 311 slides through the spiral groove 321 towards the second end, and the rotating component 32 drives the pressure plate 34 to tilt and rotate, so that the pressure plate 34 corresponds to the second or first pushing end.

[0029] It should be noted that when the swing end of the swing mechanism 20 needs to be moved to a certain position, the rotating part 32 is pushed into the switch cabinet 50. At this time, the limiting block 311 slides along the linear slide 322 towards the first end, and the rotating part 32 only moves in a straight line. The pressure plate 34 at its end moves along with it, accurately pushing the corresponding first or second push end, realizing the position switching of the swing end. When it is necessary to switch the push end corresponding to the pressure plate 34, the pushing force on the rotating part 32 is released. The rotating part 32 slides out of the switch cabinet 50 under the action of the first elastic element 33. At this time, the limiting block 311 disengages from the linear slide 322 and enters the spiral slide 321, and slides along the spiral slide 321 towards the second end. The guiding effect of the spiral slide 321 drives the rotating part 32 to rotate synchronously, so that the pressure plate 34 rotates to the position of the other push end, completing the switching of the push object and preparing for the next drive.

[0030] This structure, through the coordinated operation of the spiral slide 321 and the linear slide 322, links the linear sliding and rotational movements of the rotating component 32. By simply pushing and releasing the rotating component 32, the pressure plate 34 can accurately correspond to different pushing ends without additional switching operations, thus simplifying the operation process. The fit between the limit block 311 and the slide ensures the stability of the sliding and rotation of the rotating component 32, avoiding movement deviations and making the pushing process more reliable. This mechanical linkage structure can continue the advantages of pure mechanical transmission, eliminating the need for electrical control and avoiding problems such as poor contact. At the same time, it maintains the characteristic of being operable without removing the switch panel, further improving the ease of operation and working stability of the device.

[0031] Please see Figure 4 The height of the first end is lower than the height of the second end.

[0032] It should be noted that the second end of the limiting circular plate 35, which is away from the outer end of the rotating part 32, is flush with the end of the spiral groove 321, forming a smooth transition; the first end, which is close to the limiting circular plate 35, is lower than the second end, and a step with a sudden drop is formed between the two. This step causes the straight groove 322 to form a limiting structure at the first end. When the limiting block 311 slides along the straight groove 322 to the first end, it will be blocked by the step and cannot slide directly along the straight groove 322 in the opposite direction. It can only enter the spiral groove 321 through the connection between the spiral groove 321 and the straight groove 322.

[0033] When the rotating component 32 is pushed into the switch cabinet 50, the limiting block 311 slides from the second end, which is flush with the spiral slide 321, along the straight slide 322 to the first end. As it slides to the first end, the step forms a hard block on the limiting block 311, restricting it from retracting along the straight slide 322 without external force. When the pushing force on the rotating component 32 is released, the first elastic element 33 drives the rotating component 32 to rebound out of the cabinet. Due to the blockage of the step, the limiting block 311 cannot return along the straight slide 322. It can only enter the spiral slide 321 connected to it from the first end and slide along the spiral slide 321 to the second end, thereby driving the rotating component 32 to rotate synchronously, so that the pressure plate 34 can be accurately switched to the position of the other push end.

[0034] The height difference between the first and second ends is rigidly limited to ensure that the limiting block 311 will not return along the straight slide 322 when it rebounds, forcing it into the spiral slide 321. This avoids misalignment of the pressure plate 34 due to accidental slippage of the limiting block 311, ensuring the uniqueness and reliability of the top push end switching. At the same time, the flush transition between the second end and the spiral slide 321 makes the limiting block 311 smoother when sliding and rotating, reducing action jamming, further improving the stability and accuracy of the device operation, continuing the core advantages of the pure mechanical structure that does not require power supply or panel disassembly, and reducing the risk of misoperation.

[0035] Please see Figure 3 and Figure 4 A slide rail 312 is provided on the slide cylinder 31 along its radial direction. A limiting block 311 is slidably disposed in the slide rail 312. A spring piece 313 is provided in the slide rail 312 to keep the limiting block 311 moving towards the bottom surface of the spiral slide groove 321 or the straight slide groove 322.

[0036] It should be noted that when the rotating component 32 slides or rotates along the slide cylinder 31, the limiting block 311 needs to move synchronously within the spiral slide groove 321 and the linear slide groove 322. The spring piece 313 continuously applies a force towards the bottom surface of the slide groove to the limiting block 311, ensuring that the limiting block 311 is always embedded in the slide groove and in close contact with the bottom of the groove, and will not disengage from the slide groove due to the movement of the rotating component 32 or equipment vibration. When the rotating component 32 slides into the cabinet, the limiting block 311 moves along the linear slide groove 322, and the force of the spring piece 313 ensures that it is stably attached to the groove wall and avoids shaking. When the rotating component 32 slides out of the cabinet and is driven to rotate through the spiral slide groove 321, the force of the spring piece 313 ensures that the limiting block 311 slides smoothly along the trajectory of the spiral slide groove 321, accurately guiding the rotating component 32 to complete the rotation action, and realizing the precise switching of the pressure plate 34 to the top push end.

[0037] The spring plate 313 ensures that the limiting block 311 fits tightly with the slide groove through continuous force, preventing the limiting block 311 from dislodging from the slide groove due to vibration or inertia, thus preventing movement jamming or misalignment and ensuring smooth and stable sliding and rotation of the rotating component 32. At the same time, the sliding of the limiting block 311 in the slide 312, combined with the elasticity of the spring plate 313, can adapt to subtle changes in the slide groove trajectory, reduce mechanical wear, and extend the service life of the device. This structure further enhances the reliability of pure mechanical transmission, ensuring that the pressure plate 34 acts accurately on the pushing end during operation, continuing the advantages of no power supply and no panel disassembly, reducing the risk of failure due to structural loosening, and improving the overall stability of the device.

[0038] Please see Figure 5 and Figure 6 The swing mechanism 20 includes a mounting frame 21, a reversing assembly 22, and a swing assembly 23. The mounting frame 21 is mounted on the frame 10. The reversing assembly 22 is rotatably mounted on the frame 10, with its rotation axis horizontal. The reversing assembly 22 has push columns 223 spaced parallel to the rotation axis. A first push end and a second push end are both located on the reversing assembly 22, on the side of the reversing assembly 22 away from the push columns 223. The swing assembly 23 is slidably connected along the vertical direction to a clearance slot 211 provided on the mounting frame 21. The swing assembly 23 has an elastic locking portion that is slidably connected to the push columns 223. The swing end is located on the swing assembly 23, on the outside of the mounting frame 21.

[0039] It should be noted that when the pushing part of the drive mechanism 30 acts on the second pushing end of the reversing assembly 22, the reversing assembly 22 rotates around the horizontal rotation axis. Since the first and second pushing ends and the pushing column 223 are located on both sides of the reversing assembly 22, the rotation of the reversing assembly 22 will drive the pushing column 223 to move synchronously. The pushing column 223 transmits the movement to the swing assembly 23 through a sliding connection with the elastic locking part of the swing assembly 23, causing the swing assembly 23 to slide vertically upward along the clearance strip 211 of the mounting bracket 21. When the swing assembly 23 slides, its outer swing end moves upward to the second position, thereby driving the actuating assembly 40, which is hinged to it, to slide upward and push the locking limit post 52 to unlock. When the pushing part acts on the first pushing end, the reversing assembly 22 rotates in the opposite direction, the pushing column 223 moves in the opposite direction, and the swing assembly 23 slides vertically downward along the clearance strip 211. The swing end returns to the first position, the actuating assembly 40 moves downward synchronously, and the locking limit post 52 returns to the locked state.

[0040] The swing mechanism 20 achieves force direction conversion through the rotation of the reversing component 22, efficiently transmitting the thrust of the drive mechanism 30 to the swing component 23, enabling a compact layout within the limited space of the switch cabinet 50. The sliding connection between the elastic mounting part and the push column 223 ensures reliable force transmission and adapts to minor deviations during movement, preventing jamming or detachment. The clearance slot 211 of the mounting bracket 21 precisely constrains the sliding direction of the swing component 23, ensuring stable and controllable vertical movement of the swing end and improving the accuracy of the toggle component 40 pushing the locking limit column 52. The entire swing mechanism 20 is a purely mechanical structure, requiring no electrical components, continuing the advantage of being power-free. Furthermore, its cooperation with the frame 10 allows for assembly and operation without removing the switch panel, further enhancing the panel-free feature, reducing equipment wear risk, and improving the reliability and operational stability of the device.

[0041] Please see Figures 6 to 8 The reversing assembly 22 includes a swing member 221 and push rods 222. The swing member 221 is rotatably mounted on the mounting bracket 21, and a push post 223 is provided on the swing member 221. There are two push rods 222, which are respectively inclinedly arranged at the upper and lower ends of the swing member 221, and respectively form a first push end and a second push end, with the first push end located below the second push end.

[0042] It should be noted that when the manual closing button 53 needs to be temporarily unlocked, the pushing part of the drive mechanism 30 acts upward on the second push end located above. The inclined push rod 222 transmits the thrust to the swing member 221, causing the swing member 221 to rotate upward around the rotation axis of the mounting bracket 21. When the swing member 221 rotates, the pushing column 223 on it moves upward accordingly. Through the cooperation with the elastic locking part of the swing assembly 23, it drives the swing assembly 23 to slide upward along the avoidance slot 211, thereby moving the swing end to the second position, realizing the push unlocking of the locking limit post 52 by the toggle assembly 40. When locking is required, the pushing part acts downward on the first push end located below. The push rod 222 at the lower end drives the swing member 221 to rotate downward in the opposite direction around the rotation axis. The pushing column 223 moves downward accordingly, driving the swing assembly 23 to slide downward. The swing end returns to the first position, and the toggle assembly 40 disengages from the locking limit post 52, restoring the locked state.

[0043] Please see Figures 6 to 8 The swing assembly 23 includes a swing shaft 231, a push ring 232, a second elastic element 233, and an elastic telescopic rod 234. One end of the swing shaft 231 has a slot along its axial direction, and the other end slides against the clearance slot 211 in the mounting bracket 21. The push ring 232 is slidably sleeved on the swing shaft 231. The second elastic element 233 is sleeved on the swing shaft 231. The second elastic element 233 abuts against both the swing shaft 231 and the push ring 232, and is used to spring the push ring 232, causing the swing shaft 231 to maintain a tendency to continuously move towards the clearance slot 211. The second elastic element 233, the swing shaft 231, and the push rod 232 combine to form an elastic locking part. One end of the elastic telescopic rod 234 is connected to the swing shaft 231, and the other end extends out after passing through the clearance slot 211. The elastic telescopic rod 234 is coaxially arranged with the swing shaft 231.

[0044] It should be noted that the maximum rotation amplitude of the swing component 221 can be set to be greater than the distance between the first position and the second position, providing a structural basis for the automatic switching of the swing axis 231.

[0045] When the swing shaft 231 is in the second position, the push column 223 engages with the slot of the swing shaft 231, and the push ring 232 remains in contact with the push column 223 under the action of the second elastic member 233. When the push part of the drive mechanism 30 acts on the push end of the reversing assembly 22, the swing member 221 begins to rotate around the rotation axis of the mounting bracket 21, and the push column 223 rotates synchronously with the swing member 221 and slides along the side wall of the slot. As the swing member 221 continues to rotate, the angle between it and the swing shaft 231 in the second position gradually changes, and the push column 223 exerts a squeezing force on the push ring 232, forcing the push ring 232 to slide along the swing shaft 231, thereby driving the second elastic member 233 to continuously compress and store elastic potential energy. Since the maximum rotation amplitude of the swing member 221 is greater than the amplitude between the first and second positions of the swing shaft 231, when the swing member 221 rotates to another preset position, the squeezing force of the push column 223 on the push ring 232 is completely released, and the second elastic member 233 quickly releases the stored elastic potential energy, generating a reverse thrust to push the swing shaft 231 to the first position. During the movement, the swing shaft 231 drives the coaxially connected elastic telescopic rod 234 to move synchronously, thereby driving the toggle assembly 40 through the swing end to complete unlocking or resetting.

[0046] Please see Figure 5 The push rod 222 can be equipped with a metal ball, and the upper and lower ends of the mounting bracket 21 can be equipped with magnets. After the swing shaft 231 reaches the first position or the second position, the metal ball is attracted by the magnet to fix the current position, so as to continuously push the limit post 52. When the swing shaft 231 moves to the second position under the driving action, the push rod 222 of the reversing component 22 rotates with the swing component 221 to the upper end of the mounting bracket 21. The metal ball on the push rod 222 contacts and is attracted to the magnet at the upper end of the mounting bracket 21, so that the reversing component 22 maintains its current rotation state. Then, through the push column 223, the swing shaft 231 and other structures, the swing end is stably maintained in the second position, ensuring that the toggle component 40 continues to push the locking limit column 52 and maintains the unlocked state. When the swing shaft 231 moves to the first position, the push rod 222 rotates with the swing component 221 to the lower end of the mounting bracket 21. The metal ball is attracted to the magnet at the lower end of the mounting bracket 21, the reversing component 22 is fixed in the corresponding position, the swing end is stably in the first position, and the toggle component 40 no longer pushes the limit column 52, maintaining the locked state.

[0047] Please see Figure 9 The actuating assembly 40 includes a slider 41 and an actuating lever 42. The slider 41 is slidably mounted on a slide rail 11 on the frame 10 in a vertical direction. The slider 41 is hinged to the extended end of the elastic telescopic rod 234. The actuating lever 42 is mounted on the slider 41, and its extended end corresponds to the limiting post 52.

[0048] It should be noted that when the elastic telescopic rod 234 of the swing assembly 23 moves upward with the swing shaft 231, since the slider 41 is hinged to the extended end of the elastic telescopic rod 234, the movement of the elastic telescopic rod 234 will cause the slider 41 to slide vertically upward along the slide rail 11 of the frame 10. When the slider 41 moves upward, the actuating rod 42 on it moves upward synchronously. The extended end of the actuating rod 42 contacts the locking limit post 52 and pushes it to move, releasing the closing lock. When the elastic telescopic rod 234 moves downward with the swing shaft 231, the slider 41 slides vertically downward along the slide rail 11 under its drive. The actuating rod 42 moves downward and disengages from the locking limit post 52. The locking limit post 52 returns to its original position and re-establishes the lock.

[0049] Please see Figure 9 The lever 42 is equipped with a roller 43, which rolls in cooperation with the slide rail 11.

[0050] It should be noted that when the slider 41 slides vertically along the slide rail 11 under the action of the elastic telescopic rod 234, the roller 43 on the actuating rod 42 moves synchronously with the actuating rod 42, and rolling friction is formed between the roller 43 and the slide rail 11. During the process of the slider 41 moving up to push the locking limit post 52 or moving down to reset, the roller 43 rolls smoothly along the slide rail 11, converting the sliding friction between the actuating rod 42 and the slide rail 11 into rolling friction, thereby reducing motion resistance.

[0051] Please see Figure 1 and Figure 9 A rotating rod 12 is rotatably mounted on the slide rail 11. The rotating rod 12 is always in contact with the upper surface of the slider 41. As the slider 41 slides vertically on the slide rail 11, the top of the slider 41 continuously pushes the rotating rod 12 to rotate around the top of the slide rail 11. When the slider 41 moves upward and drives the actuating rod 42 to push the limiting post 52 to move, it can simultaneously push the rotating rod 12 to a horizontal state. The horizontal rotating rod 12 can limit the cabinet door 51 of the switch cabinet 50 and prevent the cabinet door 51 from closing.

[0052] When the manual closing button 53 needs to be temporarily unlocked, the slider 41 slides upward along the slide rail 11, driving the toggle lever 42 to push the locking limit pin 52 to release the lock. At the same time, the upper surface of the slider 41 continuously pushes the rotating rod 12 upward, forcing the rotating rod 12 to gradually rotate around the top rotation axis of the slide rail 11, and the tilt angle continuously decreases. When the slider 41 reaches the upper limit position, the rotating rod 12 is fully pushed to a horizontal state, and its extension end is exactly on the necessary path for the cabinet door 51 to close. If an attempt is made to close the cabinet door 51 at this time, the horizontal rotating rod 12 will rigidly abut against the inside of the cabinet door 51, preventing the cabinet door 51 from closing completely, thus reminding the operator that the device is still in a temporary unlocked state and has not been reset. When the maintenance is completed and the unlocking needs to be released, the slider 41 slides downward along the slide rail 11 to reset, and the rotating rod 12 loses the pushing force of the slider 41 and rotates back to the tilted state under its own gravity, leaving the closing path of the cabinet door 51. The cabinet door 51 can then be closed normally, indicating that the temporary unlocking has been released.

[0053] By directly binding the temporary unlock status to the switch permission of cabinet door 51, an intuitive physical reminder is formed, eliminating the need for additional electrical warnings or manual memory. This effectively avoids accidental operation of closing cabinet door 51 due to negligence in forgetting to release the temporary unlock status. The physical barrier reminder method is more reliable than traditional warnings, and can accurately transmit status information even in noisy maintenance environments, preventing safety risks caused by accidental power supply or misoperation of the equipment while it is unlocked.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A closing lockout temporary unlocking mechanical device, characterized in that, The utility model relates to a kind of switch cabinet locking mechanism, including: Rack, be arranged in switch cabinet; Swing mechanism, be arranged on the rack; The swing mechanism has swing end that can move in vertical direction, the swing end has first position and second position located above the first position;The swing mechanism also has first push end for driving the swing end to move to the first position, and second push end for driving the swing end to move to the second position; Driving mechanism, be arranged on switch cabinet, with push portion corresponding the first push end and the second push end respectively; Dialing component, along vertical direction slidingly arranged on the rack, and with the swing end articulated, the dialing component is used to with the swing end moves to the second position, to push locking limit post.

2. The close-close lock temporary unlocking mechanical device according to claim 1, characterized in that, The driving mechanism includes: Slide cylinder, be arranged on the switch cabinet; Rotary piece, one end passes through the slide cylinder and extends into switch cabinet, the inner end of the rotary piece is equipped with pressing plate, the pressing plate extends along the radial direction of the rotary piece, forms the push portion;The outer end of the rotary piece is equipped with limit round plate; First elastic member, located outside switch cabinet, and is sleeved on the rotary piece;The first elastic member is respectively with the switch cabinet and the limit round plate abuts, and is used to pop the limit round plate, so that the rotary piece keeps having the tendency of continuous moving outward.

3. The close-close lock temporary unlocking mechanical device according to claim 2, characterized in that, Spiral chute is equipped on the lateral wall of the rotary piece, both ends of the spiral chute are communicated by straight line sliding slot, the straight line sliding slot is arranged in the same direction with the axis direction of the rotary piece;Correspondingly, limit block that can be adapted with the spiral chute and the straight line sliding slot is equipped on the slide cylinder; The end of the straight line sliding slot close to the limit round plate is first end, and the end away from the limit round plate is second end; Wherein, when the rotary piece slides into the switch cabinet, the limit block slides along the straight line sliding slot to the first end, while the pressing plate pushes the first push end or the second push end;When the rotary piece slides out of the switch cabinet, the limit block slides to the second end through the spiral chute, the rotary piece drives the pressing plate to pitch and rotate, so that the pressing plate corresponds the second push end or the first push end.

4. The close-close lock temporary unlocking mechanical device according to claim 3, characterized in that, The height of the first end is lower than the height of the second end.

5. The close-close lock temporary unlocking mechanical device according to claim 3, characterized in that, Slide is arranged on the slide cylinder along its radial direction;The limit block is slidingly arranged in the slide;Spring sheet is arranged in the slide, for keeping the limit block having the tendency of continuous moving to the bottom surface of the spiral chute or the straight line sliding slot.

6. The close-close lock temporary unlocking mechanical device according to claim 1, characterized in that, The swing mechanism includes: Mounting bracket, be arranged on the rack; Reversing assembly, rotationally arranged on the rack, and the rotation axis is horizontally arranged;The reversing assembly is equipped with push column that is arranged in parallel with rotation axis and is spaced apart;The first push end and the second push end are all located on the reversing assembly, and are located on the side of the reversing assembly away from the push column; Swing assembly, along vertical direction and avoiding long strip mouth arranged on the mounting bracket slidingly connected;The swing assembly has elastic clamping portion that is slidingly connected with the push column;The swing end is located on the swing assembly, and is located on the outside of the mounting bracket.

7. The close-lock temporary-unlock mechanism according to claim 6, wherein The reversing assembly comprises: a swing member rotatably arranged on the mounting frame, the swing member being provided with the pushing column; two push rods, the two push rods being respectively arranged at upper and lower ends of the swing member in an inclined manner and respectively forming the first pushing end and the second pushing end, the first pushing end being located below the second pushing end.

8. The close-lock temporary unlock mechanism of claim 7, wherein, The swing assembly comprises: a swing shaft, one end of the swing shaft being provided with a bayonet in an axial direction, the other end of the swing shaft being slidably abutted against the avoiding long slot in the mounting frame; a push ring, the push ring being slidably sleeved on the swing shaft; a second elastic member, the second elastic member being sleeved on the swing shaft, the second elastic member being abutted against the swing shaft and the push ring and being used for elastically driving the push ring, the second elastic member and the swing shaft and the push rod being combined to form the elastic clamping portion; an elastic telescopic rod, one end of the elastic telescopic rod being connected with the swing shaft, the other end of the elastic telescopic rod being extended out after passing through the avoiding long slot, the elastic telescopic rod being coaxially arranged with the swing shaft.

9. The close-lock temporary unlock mechanism of claim 8, wherein, The shifting assembly comprises: a sliding block, the sliding block being slidably arranged on a sliding rail on the rack in a vertical direction, the sliding block being hingedly connected with the extended end of the elastic telescopic rod; a shifting rod, the shifting rod being arranged on the sliding block, the extended end of the shifting rod corresponding to the limiting column.

10. The close-lock temporary unlock mechanism of claim 9, wherein, The shifting rod is provided with a roller, the roller being rollingly matched with the sliding rail.

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