A safety locking mechanism for ring main unit

Abstract

The application discloses a safe locking mechanism for a ring net cabinet and relates to the technical field of locking mechanisms. In order to solve the problem of theft of the ring net cabinet, the specific technical scheme is as follows: the cabinet body is provided with a cabinet door on the front side outer wall through a hinge, a locking assembly is arranged on the back inner wall of the cabinet door, the locking assembly comprises an executing part, an L-track sliding part and a lock catch module, the lock catch module comprises a clasp, a clamping groove and a clamping column, a fixed plate is fixed to the edge inner wall of the cabinet body through bolts, the clamping groove is arranged on one side of the fixed plate, the clasp is arranged at the center of the clamping groove, the executing part is installed on the back side of the cabinet door through a fixed block, the L-track sliding part is transmissionally connected to the output end of the executing part, the clamping column is arranged at the bottom end of the L-track sliding part, a collision sensor is arranged on the back outer wall below the clamping column of the cabinet door, and a buzzer is arranged on the back side outer wall of the cabinet door. The application protects the electrical components in the ring net cabinet and improves the safety coefficient of the whole device.

Description

Technical Field

[0001] This invention relates to the field of locking mechanism technology, and in particular to a safety locking mechanism for ring main units. Background Technology

[0002] A ring main unit (RMU) is an electrical device consisting of a set of power transmission and distribution equipment housed in a metal or non-metal insulated cabinet or assembled into a modular ring network power supply unit. Its core components are load switches and fuses. Load switches control the high-voltage circuit, while fuses protect the high-voltage circuit. RMUs are widely used in substations and prefabricated substations in load centers such as urban residential areas, high-rise buildings, and factories.

[0003] A search revealed Chinese patent application CN202120550366.1, which discloses a high-reliability ring main unit with a locking mechanism. The ring main unit includes a ring main unit and a locking mechanism. The ring main unit has a door, the right end of which is hinged to the ring main unit. The door has a longitudinal plate with a through hole for a lock cylinder. The locking mechanism is fixed inside the ring main unit and includes a lock body and an electromagnet. The high-reliability ring main unit with a locking mechanism in the aforementioned patent has the following shortcomings:

[0004] Although the overall device achieves the effect of fixing the electromagnetic adsorption, the overall structure lacks a corresponding alarm contact device when locking, which may lead to the theft of the ring main unit. Therefore, there is an urgent need for a safety locking mechanism for ring main units with alarm function. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a safety interlocking mechanism for ring main units.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A safety locking mechanism for a ring main unit includes a cabinet body. A cabinet door is hinged to one side of the front outer wall of the cabinet body, and a locking assembly is provided on the back inner wall of the cabinet door. The locking assembly includes an actuator, an L-track sliding member, and a latching module. The latching module consists of a retaining ring, a retaining groove, and a retaining post.

[0008] The cabinet has a retaining ring and a retaining groove. The inner side wall of the cabinet is fixed with a fixing plate by bolts, and the retaining groove is opened on one side of the fixing plate. The retaining ring is fixed in the center of the retaining groove.

[0009] The actuator and the L-track slider are mounted on the back side of the cabinet door via a fixing block, and the L-track slider is connected to the output end of the actuator.

[0010] The latching post is located at the bottom end of the L-track sliding member;

[0011] A collision sensor is installed on the outer wall of the back of the cabinet door near the buckle post, and a buzzer is installed on one side of the outer wall of the back of the cabinet door.

[0012] Preferably, the cabinet door has equidistantly distributed heat dissipation holes on one side of its top outer wall.

[0013] Furthermore: cable trays are provided on the inner walls of both sides of the cabinet, and an installation plate is provided on the inner wall of the back of the cabinet.

[0014] Based on the aforementioned scheme: the actuator includes a first guide rod, a second guide rod, a rotating shaft, and a fourth guide rod;

[0015] The rotating shaft is connected to the side of the cabinet door near the keyhole via a bearing, and one end of the rotating shaft has a snap-fit ​​groove.

[0016] The fourth guide rod is located at one end of the rotating shaft.

[0017] A better solution than the aforementioned solution is that the second guide rod is rotatably connected to one end of the fourth guide rod via a guide post;

[0018] The first guide rod is rotatably connected to one end of the second guide rod via a rotating block, and the first guide rod is rotatably connected to one side of the outer wall of the cabinet door via a connecting shaft.

[0019] As a further embodiment of the present invention: the L-track slider includes a guide hole, a guide shaft, a sliding plate, a third guide rod, an L-shaped support plate, an L-shaped sliding hole, and an arc-shaped groove;

[0020] The guide hole is located on one side of the bottom of the first guide rod.

[0021] Meanwhile, the guide shaft is slidably connected within the guide hole;

[0022] The skateboard has one top end rotatably connected to one end of a guide shaft, and the bottom end of the skateboard is connected to a buckle post via threads.

[0023] The third guide rod is slidably connected to both sides of the skateboard.

[0024] As a preferred embodiment of the present invention: the L-shaped support plate is disposed on the outer wall of the back side of the cabinet door, and the top end of the third guide rod forms a rotational engagement with the top side of the L-shaped support plate through a rotating rod.

[0025] Meanwhile, the L-shaped sliding hole is opened on one side of the L-shaped support plate, and a sliding post is provided on one side of the top of the sliding plate, and the sliding post and the L-shaped sliding hole form a sliding fit.

[0026] As a preferred embodiment of the present invention, the arc-shaped groove is opened at the L-shaped included angle of the L-shaped sliding hole.

[0027] The beneficial effects of this invention are as follows:

[0028] 1. This safety locking mechanism for a ring main unit operates as follows: When the user inserts the key into the keyhole and turns the key, the actuator of the locking component is triggered. The actuator drives the L-track sliding component to work, causing the latch module to engage with the latching pin in the latching ring and the latching groove, thus completing the effective locking operation. When the cabinet door is opened by a thief, the locking component reverses the process, causing the latching pin to contact and abut against the collision sensor. This activates the collision sensor, transmitting the collision information to the controller, which then activates the buzzer, effectively providing an alarm function. This protects the electrical components inside the ring main unit and improves the overall safety factor of the device.

[0029] 2. This safety locking mechanism for a ring main unit, when the key is inserted into the keyhole and the end of the key engages in the locking groove, rotates the key, causing the rotating shaft to rotate. The rotating shaft promotes the rotation of the fourth guide rod, which in turn causes the second guide rod to swing, and through the rotating block, causes the first guide rod to swing. At this time, the first guide rod causes the slide plate to slide within the third guide rod, while the third guide rod rotates 90 degrees around the rotating shaft. During this period, the guide shaft slides within the guide hole, and the sliding guide shaft causes the sliding column on one side of the slide plate to slide within the L-shaped sliding hole, causing the slide plate to change from a vertical state to a horizontal state. This completes the L-shaped trajectory movement of the slide plate, ensuring the connection between the bottom locking column of the slide plate and the locking ring and the locking groove. It also promotes the effective contact of the locking column with the collision sensor to complete the alarm function, improving the practicality and safety of the overall device.

[0030] 3. The safety interlocking mechanism for this ring main unit, by installing electrical components on the mounting plate and connecting them in an orderly manner through the wiring boards on both inner sides of the cabinet, not only ensures the stable operation of the electrical components, but also promotes the orderly wiring of the electrical components, facilitating their maintenance and replacement. At the same time, the setting of heat dissipation holes promotes the heat dissipation effect inside the ring main unit. Attached Figure Description

[0031] Figure 1 This is a front view schematic diagram of a safety interlocking mechanism for a ring main unit proposed in this invention;

[0032] Figure 2 This is a side view of a safety interlocking mechanism for a ring main unit proposed in this invention.

[0033] Figure 3 This is a partial structural schematic diagram of a safety interlocking mechanism for a ring main unit proposed in this invention;

[0034] Figure 4This is a front view schematic diagram of the locking component in a safety locking mechanism for a ring main unit proposed in this invention;

[0035] Figure 5 This is a side view of the locking component in a safety locking mechanism for a ring main unit proposed in this invention.

[0036] In the diagram: 1. Handle; 2. Cabinet door; 3. Keyhole; 4. Cabinet body; 5. Ventilation vent; 6. Cable tray; 7. Collision sensor; 8. Locking assembly; 9. Buzzer; 10. Mounting plate; 11. Snap ring; 12. Snap groove; 13. First guide rod; 14. Second guide rod; 15. Guide hole; 16. Guide shaft; 17. Slide plate; 18. Third guide rod; 19. L-shaped support plate; 20. L-shaped sliding hole; 21. Arc groove; 22. Rotating shaft; 23. Fourth guide rod; 24. Connecting shaft. Detailed Implementation

[0037] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0038] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0039] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent 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. Therefore, they should not be construed as limitations on this patent.

[0040] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0041] Example 1:

[0042] A safety interlocking mechanism for ring main units, such as Figure 1-5As shown, the cabinet includes a cabinet body 4. A cabinet door 2 is hinged to one side of the front outer wall of the cabinet body 4. A locking assembly 8 is provided on the back inner wall of the cabinet door 2. The locking assembly 8 includes an actuator, an L-track sliding member, and a latch module. A keyhole 3 is provided on the front outer wall of the cabinet door 2 near the end of the actuator. The latch module consists of a retaining ring 11, a retaining groove 12, and a retaining post.

[0043] The retaining ring 11 and the retaining groove 12 are fixed to the inner side wall of the cabinet 4 by bolts. The retaining groove 12 is opened on one side of the retaining plate, and the retaining ring 11 is fixed to the center of the retaining groove 12 by thread.

[0044] The actuator and the L-track slider are mounted on the back side of the cabinet door 2 via a fixing block, and the L-track slider is connected to the output end of the actuator.

[0045] The snap-fit ​​post is threadedly connected to the bottom end of the L-track sliding member;

[0046] A collision sensor 7 is fixed to the outer wall of the back of the cabinet door 2 near the buckle post by bolts, and a buzzer 9 is fixed to the outer wall of the back of the cabinet door 2 by bolts.

[0047] During operation, the user inserts the key into the keyhole 3 and turns the key. This triggers the actuator of the locking assembly 8, which in turn drives the L-track sliding component to engage, causing the latch module to engage the latch pin with the latch ring 11 and the latch groove 12, thus completing the effective locking operation. When the cabinet door 2 is opened by a thief, the locking assembly 8 reverses the process, causing the latch pin to contact and abut against the collision sensor 7. This activates the collision sensor 7, transmitting the collision information to the controller, which then activates the buzzer 9, effectively providing an alarm function. This protects the electrical components inside the ring main unit and improves the overall safety of the device.

[0048] To promote heat dissipation in the ring main unit and the orderly arrangement of electrical components; such as Figure 1-2 As shown, the cabinet door 2 has equidistantly distributed heat dissipation holes 5 on one side of its top outer wall, and the inner walls of both sides of the cabinet body 4 are respectively fixed with cable trays 6 by bolts, and the inner wall of the back of the cabinet body 4 is fixed with mounting plates 10 by bolts. By installing electrical components on the mounting plates 10 and connecting the electrical components in an orderly manner through the cable trays 6 on both inner sides of the cabinet body 4, not only is the stable operation of the electrical components ensured, but the orderly arrangement of the electrical components' wiring is also promoted, facilitating their maintenance and replacement. At the same time, the setting of heat dissipation holes 5 promotes the heat dissipation effect inside the ring main unit.

[0049] In this embodiment, when the user inserts the key into the keyhole 3 and turns the key, the actuator of the locking component 8 is triggered to start working. The actuator drives the L-track sliding component to work, so that the latch module completes the latching pin engagement with the latching ring 11 and the latching groove 12, thus completing the effective locking work. When the cabinet door 2 is opened by a thief, the locking component 8 reverses the above method, so that the latching pin touches and abuts the collision sensor 7. This causes the collision sensor 7 to work, transmitting the collision information to the controller, which then activates the buzzer 9, thus completing the effective anti-theft work.

[0050] Example 2:

[0051] A safety interlocking mechanism for ring main units, such as Figure 4-5 As shown, in order to effectively complete the safety locking of the ring main unit, the actuator includes a first guide rod 13, a second guide rod 14, a rotating shaft 22, and a fourth guide rod 23.

[0052] The rotating shaft 22 is connected to the side of the cabinet door 2 near the keyhole 3 via a bearing, and one end of the rotating shaft 22 has a snap-fit ​​groove.

[0053] The fourth guide rod 23 is threaded to one end of the rotating shaft 22;

[0054] The second guide rod 14 is rotatably connected to one end of the fourth guide rod 23 via a guide post;

[0055] The first guide rod 13 is rotatably connected to one end of the second guide rod 14 via a rotating block, and the first guide rod 13 is rotatably connected to one side of the outer wall of the cabinet door 2 via a connecting shaft 24.

[0056] The L-track slider includes a guide hole 15, a guide shaft 16, a sliding plate 17, a third guide rod 18, an L-shaped support plate 19, an L-shaped sliding hole 20, and an arc groove 21.

[0057] Guide hole 15, the guide hole 15 is opened on one side of the bottom of the first guide rod 13;

[0058] Guide shaft 16 is slidably connected within guide hole 15;

[0059] The top end of the slide plate 17 is rotatably connected to one end of the guide shaft 16, and the bottom end of the slide plate 17 is connected to the buckle post by a thread.

[0060] The third guide rod 18 is slidably connected to both sides of the slide plate 17;

[0061] L-shaped support plate 19 is fixed to the outer wall of the back side of cabinet door 2 by bolts, and the top of the third guide rod 18 forms a rotational engagement with the top side of the L-shaped support plate 19 through a rotating rod.

[0062] L-shaped sliding hole 20, L-shaped sliding hole 20 is opened on one side of L-shaped support plate 19, and a sliding column is connected to the top side of the slide plate 17 by thread, and the sliding column and L-shaped sliding hole 20 form a sliding fit.

[0063] Arc-shaped groove 21 is opened at the L-shaped angle of L-shaped sliding hole 20.

[0064] In this embodiment, during operation, the key is inserted into the keyhole 3, and the end of the key engages in the locking groove. When the key rotates, it drives the rotating shaft 22 to rotate. The rotating shaft 22 promotes the rotation of the fourth guide rod 23. The rotating fourth guide rod 23 drives the second guide rod 14 to swing, and through the rotating block, it drives the first guide rod 13 to swing. At this time, the first guide rod 13 drives the slide plate 17 to slide in the third guide rod 18. The third guide rod 18 rotates 90 degrees around the rotating rod. During this period, the guide shaft 16 slides in the guide hole 15, and the sliding guide shaft 16 drives the sliding post on one side of the slide plate 17 to slide in the L-shaped sliding hole 20, so that the slide plate 17 changes from a vertical state to a horizontal state. This completes the L-shaped trajectory movement of the slide plate 17, ensuring the connection between the bottom locking post of the slide plate 17 and the locking ring 11 and the locking groove 12. It also promotes the effective contact of the locking post with the collision sensor 7 to complete the alarm work, improving the practicality and safety of the overall device.

[0065] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A safety locking mechanism for a ring main unit, comprising a cabinet (4), characterized in that, The cabinet (4) has a cabinet door (2) hinged to one side of the front outer wall, and a locking assembly (8) is provided on the back inner wall of the cabinet door (2). The locking assembly (8) includes an actuator, an L-track sliding member and a latch module. The latch module consists of a retaining ring (11), a slot (12) and a latch post. The inner side wall of the cabinet (4) is fixed with a fixing plate by bolts, and the slot (12) is opened on one side of the fixing plate, and the retaining ring (11) is set at the center of the slot (12); The actuator is installed on the back side of the cabinet door (2) by a fixing block, and the L-track sliding component is connected to the output end of the actuator. The latching post is located at the bottom end of the L-track sliding member; A collision sensor (7) is provided on the outer back wall of the cabinet door (2) near the buckle post, and a buzzer (9) is provided on one side of the outer back wall of the cabinet door (2). The L-track slider includes a guide hole (15), a guide shaft (16), a slide plate (17), a third guide rod (18), an L-shaped support plate (19), an L-shaped sliding hole (20), and an arc groove (21); the guide hole (15) is located on one side of the bottom of the first guide rod (13); The guide shaft (16) is slidably connected to the guide hole (15); the top end of the slide plate (17) is rotatably connected to the end of the guide shaft (16), and the bottom end of the slide plate (17) is connected to the buckle post by a thread; the third guide rod (18) is slidably connected to both sides of the slide plate (17); the L-shaped support plate (19) is set on the outer wall of the back side of the cabinet door (2), and the top end of the third guide rod (18) forms a rotational fit with the top side of the L-shaped support plate (19) through a rotating rod.

2. The safety interlocking mechanism for a ring main unit according to claim 1, characterized in that, The cabinet door (2) has heat dissipation holes (5) that are evenly distributed on one side of the top.

3. The safety interlocking mechanism for a ring main unit according to claim 1, characterized in that, The cabinet (4) has cable trays (6) installed on the inner walls of both sides, and an installation plate (10) installed on the inner wall of the back side.

4. The safety interlocking mechanism for a ring main unit according to claim 1, characterized in that, The actuator includes a first guide rod (13), a second guide rod (14), a rotating shaft (22) and a fourth guide rod (23); the rotating shaft (22) is connected to the side of the cabinet door (2) near the keyhole (3) by a bearing, and a snap-fit ​​groove is opened at one end of the rotating shaft (22); the fourth guide rod (23) is located at one end of the rotating shaft (22).

5. A safety interlocking mechanism for a ring main unit according to claim 4, characterized in that, The second guide rod (14) is rotatably connected to one end of the fourth guide rod (23) via a guide post; the first guide rod (13) is rotatably connected to one end of the second guide rod (14) via a rotating block, and the first guide rod (13) is rotatably connected to one side of the outer wall of the cabinet door (2) via a connecting shaft (24).

6. A safety interlocking mechanism for a ring main unit according to claim 5, characterized in that, The L-shaped sliding hole (20) is opened on one side of the L-shaped support plate (19), and a sliding post is provided on one side of the top of the sliding plate (17), and the sliding post and the L-shaped sliding hole (20) form a sliding fit.

7. A safety interlocking mechanism for a ring main unit according to claim 6, characterized in that, The arc groove (21) is opened at the L-shaped angle of the L-shaped sliding hole (20).

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