Anti-mis-touch low-voltage safety power supply cabinet

Abstract

The utility model relates to a kind of low-voltage safety power supply cabinet of preventing mistaken touch, to solve the current low-voltage switch cabinet when maintenance, operator sometimes forgets manual power-off, when overhauling, tool is easy to touch the element in power supply cabinet, not only can cause the short-circuit damage of element, but also easily cause the technical problem of electric shock danger, including cabinet and cabinet door articulated on cabinet by hinge, disconnecting mechanism and mistaken opening prevention mechanism are arranged between the cabinet and the cabinet door, the utility model has to the power supply cabinet when overhauling, and then avoid personnel to power supply cabinet overhauling, mistaken touch live part, cause electric shock danger, and extrusion rod is placed in the inside of round groove, to avoid the circuit breaker contact ablation, capacitor oil leakage, ground failure etc. component in the inside of cabinet when overhauling personnel to the circuit breaker contact ablation, capacitor oil leakage, ground failure etc. component, overhauling personnel mistaken touch extrusion rod, make the contact piece on the lapping plate and moving disc make power supply cabinet energization, cause electric shock to overhauling personnel.

Description

Technical Field

[0001] This utility model relates to the field of power cabinets, specifically a low-voltage safety power cabinet designed to prevent accidental contact. Background Technology

[0002] Low-voltage safety power supply cabinets (commonly known as low-voltage distribution cabinets or low-voltage switch cabinets) are special equipment in power systems used for the safe distribution, control and management of low-voltage electrical energy. Their rated voltage generally does not exceed 1kV, and they are mainly used to ensure that electrical equipment operates under safe and stable conditions.

[0003] During maintenance of traditional low-voltage switchgear, operators sometimes forget to manually disconnect the power. During inspection, tools can easily come into contact with components inside the power cabinet, causing not only short circuits and damage but also posing a risk of electric shock. Therefore, a new technical solution is needed to address this issue. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a low-voltage safety power supply cabinet to prevent accidental contact. This solves the technical problem that when operators maintain low-voltage switchgear, they sometimes forget to manually disconnect the power. During maintenance, tools may easily touch the components inside the power supply cabinet, which can not only cause short circuit damage to the components, but also easily cause electric shock hazards.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: a low-voltage safety power supply cabinet for preventing accidental contact is designed, including a cabinet body and a cabinet door hinged to the cabinet body. A power-off mechanism and an anti-accidental opening mechanism are provided between the cabinet body and the cabinet door. The power-off mechanism includes a circular groove formed on the cabinet body and a pressing plate installed on the cabinet door. A power-off switch is installed in the inner cavity of the circular groove. A disc is connected to the power-off switch. A pressing rod is fixedly connected to the end of the disc away from the power-off switch. A limit rod is fixedly connected to the pressing plate.

[0006] The anti-accidental opening mechanism includes a connecting groove formed on the cabinet below the circular groove and a limiting plate installed on the cabinet. The limiting plate corresponds to the connecting groove. A connecting shaft is rotatably connected in the connecting groove through a bearing. A pull rod is fixedly connected to the outside of the connecting shaft. One end of the pull rod has a notch. The top of the pull rod and the bottom of the notch are both inclined surfaces, and the inclined surfaces are inclined towards the limiting plate.

[0007] Preferably, the power-off switch includes a sleeve fixedly connected in a circular groove, a movable disk slidably connected inside the sleeve, an actuating rod fixedly connected between the movable disk and the circular disk, overlapping plates fixedly connected to both sides of the inner cavity of the sleeve, a contact piece fixedly connected to the opposite end of the movable disk and the overlapping plate, and a first spring fixedly connected between the movable disk and the inner cavity of the sleeve.

[0008] Preferably, torsion springs are installed on the outside of the connecting shafts on both sides of the pull rod.

[0009] Preferably, a second spring is sleeved on the outside of the sleeve and the trigger rod, and the two ends of the second spring are fixedly connected to the inner cavity of the circular groove and the circular disk, respectively.

[0010] Preferably, the disc has a first vent hole, and the movable disc has a second vent hole.

[0011] Preferably, the limiting rod corresponds to the extrusion rod, and the end of the extrusion rod near the limiting rod is provided with an arc-shaped protrusion.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model combines a cabinet, a circular groove, a sleeve, a first spring, a lap plate, contact pieces, a disc, a movable disc, and a pressing rod. When the power cabinet is being repaired, after the cabinet door is opened, the limiting rod disengages from the pressing rod, thereby the elastic force of the first spring pushes the movable disc to move within the sleeve, causing the contact pieces on the lap plate and the movable disc to separate, thus de-energizing the power cabinet. This prevents personnel from accidentally touching live components such as terminals and busbars during power cabinet repairs, thus avoiding the risk of electric shock. Furthermore, the pressing rod is placed inside the circular groove, preventing repair personnel from accidentally touching the pressing rod while repairing components inside the cabinet such as burnt circuit breaker contacts, leaking capacitor oil, or grounding failures, which could cause the contact pieces on the lap plate and the movable disc to energize the power cabinet and cause electric shock.

[0014] 2. This utility model combines a limiting plate, a notch, a pull rod, and a connecting shaft. Before the cabinet door is opened, the limiting plate is engaged in the notch, preventing the cabinet door from being opened directly. Because the thickness of the limiting plate is less than the thickness of the notch, there is a gap between the cabinet door and the cabinet body before the door is opened. Therefore, maintenance personnel need to push the pull rod through the gap between the cabinet door and the cabinet body to disengage the notch from the limiting plate before the cabinet door can be opened. Since the pull rod is concealed, non-professional maintenance personnel will not know how to open the cabinet door, thus avoiding accidental opening of the cabinet door by non-professionals and potential danger. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial sectional front view of the anti-accidental opening mechanism of this utility model;

[0017] Figure 3 This is an enlarged view of point A in this utility model;

[0018] Figure 4This is a schematic diagram of the cabinet structure of this utility model;

[0019] Figure 5 This is an enlarged view of section B of this utility model;

[0020] Figure 6 This is a partial sectional view of the cabinet body of this utility model;

[0021] Figure 7 This is an enlarged view of point C in this utility model;

[0022] Figure 8 This is a cross-sectional view of the power-off switch of this utility model;

[0023] Figure 9 This is a schematic diagram of the connection structure between the connecting shaft, the tie rod, and the torsion spring of this utility model.

[0024] In the diagram: 1. Cabinet body; 11. Cabinet door; 2. Connecting groove; 21. Connecting shaft; 22. Pull rod; 23. Notch; 24. Limiting plate; 25. Torsion spring; 3. Circular groove; 31. Extrusion rod; 32. Circular disc; 33. First vent; 34. Extrusion plate; 35. Limiting rod; 4. Power off switch; 41. Sleeve; 42. Actuating rod; 43. First spring; 44. Overlapping plate; 45. Contact piece; 46. Moving disc; 47. Second vent; 5. Second spring. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0026] Example 1: A low-voltage safety power supply cabinet to prevent accidental contact, see [link / reference] Figures 1 to 9The system includes a cabinet body 1 and a cabinet door 11 hinged to the cabinet body 1. A power-off mechanism and an anti-accidental opening mechanism are provided between the cabinet body 1 and the cabinet door 11. The power-off mechanism includes a circular groove 3 formed on the cabinet body 1 and a pressing plate 34 installed on the cabinet door 11. A power-off switch 4 is installed inside the circular groove 3 and is connected to the power line of the main circuit breaker. A disc 32 is connected to the power-off switch 4. A pressing rod 31 is fixedly connected to one end of the disc 32 away from the power-off switch 4. The pressing rod 31 is placed inside the circular groove 3. A limit rod 35 is fixedly connected to the pressing plate 34. The power-off switch 4 includes a sleeve 41 fixedly connected inside the circular groove 3. A movable disk 46 is slidably connected inside the sleeve 41. The movable disk 46 and the disc... A trigger rod 42 is fixedly connected between 32. A lap plate 44 is fixedly connected to both sides of the inner cavity of the sleeve 41. A contact piece 45 is fixedly connected to the opposite end of the moving disk 46 and the lap plate 44. A first spring 43 is fixedly connected between the moving disk 46 and the inner cavity of the sleeve 41. The anti-misoperation mechanism includes a connecting groove 2 opened on the cabinet 1 below the circular groove 3 and a limiting plate 24 installed on the cabinet 1. The limiting plate 24 corresponds to the connecting groove 2. A connecting shaft 21 is rotatably connected in the connecting groove 2 through a bearing. A pull rod 22 is fixedly connected to the outside of the connecting shaft 21. A notch 23 is opened at one end of the pull rod 22. The top of the pull rod 22 and the bottom of the inner cavity of the notch 23 are both inclined surfaces, and the inclined surfaces are inclined towards the limiting plate 24.

[0027] During operation, after a period of use, the power cabinet requires maintenance to address high-risk issues such as contact erosion of circuit breakers (monitoring current and voltage parameters, triggering trip protection), oil leakage in capacitors (filtering, energy storage, voltage stabilization, power factor compensation), and grounding failures. This ensures the normal operation of the power cabinet. When the power cabinet is being maintained, after the cabinet door 11 is opened, the limit rod 35 disengages from the pressing rod 31, causing the spring force of the first spring 43 to push the moving plate 46 to move within the sleeve 41. This separates the contact piece 45 on the lap plate 44 and the moving plate 46. Since the power-off switch 4 is connected to the power line of the main circuit breaker, the power cabinet is de-energized. This prevents personnel from accidentally touching live parts such as terminals and busbars during maintenance, thus avoiding the risk of electric shock. Furthermore, the pressing rod 31 is placed inside the circular groove 3, preventing maintenance personnel from touching the interior of the cabinet 1. When repairing components such as circuit breaker contact erosion, capacitor oil leakage, and grounding failure, maintenance personnel may accidentally touch the squeezing rod 31, causing the contact piece 45 on the lap plate 44 and the moving plate 46 to energize the power cabinet and resulting in electric shock to the maintenance personnel. Before the cabinet door 11 is opened, the limiting plate 24 is stuck in the notch 23, making it impossible to open the cabinet door 11 directly. Since the thickness of the limiting plate 24 is less than the thickness of the notch 23, there is a gap between the cabinet door 11 and the cabinet body 1 before the cabinet door 11 can be opened. Therefore, maintenance personnel need to push the pull rod 22 through the gap between the cabinet door 11 and the cabinet body 1 to disengage the notch 23 from the limiting plate 24 before the cabinet door 11 can be opened. Since the pull rod 22 is hidden, non-professional maintenance personnel do not know how to open the cabinet door 11, thus avoiding the danger of non-professionals accidentally opening the cabinet door 11 during use.

[0028] For details, see Figure 3 and Figure 9 Both sides of the pull rod 22 are equipped with torsion springs 25 on the outside of the connecting shafts 21. With the setting of the torsion springs 25, when the power cabinet is repaired and the cabinet door 11 is closed, the limiting plate 24 is pressed against the top slope of the pull rod 22. When the limiting plate 24 presses against the top of the railing, the pull rod 22 rotates with the connecting shaft 21. The rotation of the pull rod 22 causes the spring coil of the torsion spring 25 to undergo torsional deformation, converting mechanical energy into elastic potential energy. When the limiting plate 24 passes over the top slope of the pull rod 22 and is placed in the notch 23, the spring coil of the torsion spring 25 returns to its original shape and releases energy, driving the pull rod 22 to reset. This not only facilitates the automatic reset of the pull rod 22 and limits the cabinet door 11, but also improves the stability of the limiting plate 24 in the notch 23, further improving the stability of the cabinet door 11 in the cabinet body 1.

[0029] Further, see Figure 7The sleeve 41 and the outer side of the actuating rod 42 are fitted with a second spring 5. The two ends of the second spring 5 are fixedly connected to the inner cavity of the circular groove 3 and the circular disk 32, respectively. When the cabinet door 11 is closed, the limiting rod 35 pushes the squeezing rod 31 to make the contact piece 45 on the overlapping plate 44 and the moving disk 46 energize the power cabinet. At this time, the second spring 5 is compressed. When the cabinet door 11 is opened for maintenance, the elastic force of the second spring 5 helps to push the circular disk 32 to move, thereby ensuring that when the cabinet door 11 is opened, the contact piece 45 on the overlapping plate 44 and the moving disk 46 can be completely separated.

[0030] It is worth noting that, see Figure 7 and Figure 8 The disc 32 is provided with a first exhaust hole 33 and the movable disc 46 is provided with a second exhaust hole 47. By setting the first exhaust hole 33 and the second exhaust hole 47, the air pressure on both sides of the disc 32 and the movable disc 46 can be kept the same, thereby ensuring that the disc 32 and the movable disc 46 can move in the circular groove 3 and the sleeve 41 respectively.

[0031] It is worth noting that, see Figure 7 The limiting rod 35 corresponds to the pressing rod 31 and is used to ensure that when the cabinet door 11 is closed, the limiting rod 35 can contact the pressing rod 31 and press it, so that the contact piece 45 on the overlapping plate 44 and the moving plate 46 are separated. The end of the pressing rod 31 near the limiting rod 35 is provided with an arc-shaped protrusion to reduce the friction between the limiting rod 35 and the pressing rod 31, so as to facilitate easy closing of the cabinet door 11.

[0032] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0033] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A low-voltage safety power supply cabinet for preventing accidental contact, comprising a cabinet body (1) and a cabinet door (11) hinged to the cabinet body (1), characterized in that, A power-off mechanism and an anti-accidental opening mechanism are provided between the cabinet (1) and the cabinet door (11). The power-off mechanism includes a circular groove (3) on the cabinet (1) and an extrusion plate (34) installed on the cabinet door (11). A power-off switch (4) is installed in the inner cavity of the circular groove (3). A disc (32) is connected to the power-off switch (4). An extrusion rod (31) is fixedly connected to one end of the disc (32) away from the power-off switch (4). A limit rod (35) is fixedly connected to the extrusion plate (34).

2. The low-voltage safety power supply cabinet for preventing accidental contact as described in claim 1, characterized in that, The anti-misoperation mechanism includes a connecting groove (2) opened on the cabinet (1) below the circular groove (3) and a limiting plate (24) installed on the cabinet (1). The limiting plate (24) corresponds to the connecting groove (2). A connecting shaft (21) is rotatably connected in the connecting groove (2) through a bearing. A pull rod (22) is fixedly connected to the outside of the connecting shaft (21). A notch (23) is opened at one end of the pull rod (22). The top of the pull rod (22) and the bottom of the inner cavity of the notch (23) are both inclined surfaces, and the inclined surfaces are inclined to the side of the limiting plate (24).

3. The low-voltage safety power supply cabinet for preventing accidental contact as described in claim 1, characterized in that, The power-off switch (4) includes a sleeve (41) fixedly connected in a circular groove (3). A movable disk (46) is slidably connected inside the sleeve (41). An actuating rod (42) is fixedly connected between the movable disk (46) and the circular disk (32). A lap plate (44) is fixedly connected to both sides of the inner cavity of the sleeve (41). A contact piece (45) is fixedly connected to the opposite end of the movable disk (46) and the lap plate (44). A first spring (43) is fixedly connected between the movable disk (46) and the inner cavity of the sleeve (41).

4. The low-voltage safety power supply cabinet for preventing accidental contact as described in claim 2, characterized in that, Torsion springs (25) are installed on the outside of the connecting shafts (21) on both sides of the pull rod (22).

5. A low-voltage safety power supply cabinet for preventing accidental contact as described in claim 3, characterized in that, A second spring (5) is sleeved on the outside of the sleeve (41) and the trigger rod (42), and the two ends of the second spring (5) are fixedly connected to the inner cavity of the circular groove (3) and the disc (32) respectively.

6. A low-voltage safety power supply cabinet for preventing accidental contact as described in claim 3, characterized in that, The disc (32) has a first vent hole (33), and the movable disc (46) has a second vent hole (47).

7. A low-voltage safety power supply cabinet for preventing accidental contact as described in claim 1, characterized in that, The limiting rod (35) corresponds to the extrusion rod (31), and the end of the extrusion rod (31) near the limiting rod (35) is provided with an arc-shaped protrusion.

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