Shielding mechanism and high-voltage switch cabinet locking device

Abstract

The invention relates to the technical field of switch cabinet shielding mechanisms, in particular to a shielding mechanism which comprises a shielding part. The control assembly comprises a transmission part and a driving part; the shielding piece is connected with the driving piece through the transmission piece, the transmission piece responds to the movement of the driving piece and drives the shielding piece to move between the first position and the second position, and shielding or opening of the high-voltage interface is achieved; the state detection part is used for detecting the electrified state of the bus at the high-voltage interface and outputting a discrimination signal; and the locking mechanism is in signal connection with the state detection piece, the locking mechanism comprises a locking part, and the locking mechanism is used for indicating a specific working state when receiving the state signal. The beneficial effects of the invention are that the state detection member monitors the live-line state of the high-voltage bus in real time through the current or voltage sensor, and generates a discrimination signal to drive the locking part to be engaged with the matching part of the driving member. And the locking mechanism automatically limits the movement of the driving piece when the bus is electrified, so that potential safety hazards caused by misoperation are prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of switch cabinet shielding mechanisms, in particular to a shielding mechanism and a high-voltage switch cabinet locking device. Background Art

[0002] In traditional high-voltage switchgear, switch baffles are primarily designed to isolate live components, ensuring electrical safety during maintenance and operation. However, conventional switch baffle operation has certain limitations. In practice, after the switch trolley is pulled out of the high-voltage switchgear, the operator must manually install a padlock under the baffle to prevent accidental operation or unauthorized insertion. When the switch trolley needs to be pushed in, the operator must first manually unlock and remove the padlock before the trolley can be pushed in.

[0003] Manual locking and unlocking during this process is not only inefficient but also carries a risk of omission. For example, an operator might inadvertently fail to properly install the padlock or skip unlocking the device before pushing the cart in, leading to process interruptions and potential safety hazards. Furthermore, manually operating the padlock can expose the operator to live components, increasing the potential for electric shock or arc flash injuries.

[0004] More importantly, during equipment inspection or maintenance, if the inspection personnel fail to fully check the padlock status and mistakenly push the switch trolley into the high-voltage switch cabinet, it may cause a serious electrical accident. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is that the traditional high-voltage busbar locking method relies on manual judgment and is prone to safety hazards due to misoperation.

[0006] The above technical problems are solved by the following technical solutions: The present invention proposes a shielding mechanism, which includes a shielding member; a control component, including a transmission member and a driving member, and the shielding member is connected to the driving member through the transmission member; the transmission member includes a first rod body and a second rod body, one end of the first rod body and the second rod body are both rotatably connected to the shielding member, and one end of the second rod body is slidably arranged on the first rod body; a locking mechanism, the locking mechanism includes a locking part, the locking part movably inserts the driving member to limit the movement of the driving member to prevent the shielding member from moving from the first position to the second position.

[0007] In a preferred embodiment of the shielding mechanism of the present invention, the shielding member includes two symmetrically distributed baffles, and the sliding direction of the baffles is parallel to the high-voltage interface.

[0008] In a preferred embodiment of the shielding mechanism of the present invention, one end of the first rod away from the baffle is rotatably connected to the driving member.

[0009] In a preferred embodiment of the shielding mechanism of the present invention: the second rod body includes a first connecting rod and a second connecting rod connected to each other, the first rod body is provided with a slot for accommodating the sliding of the first connecting rod, and one end of the second connecting rod is hinged to the baffle.

[0010] In a preferred embodiment of the shielding mechanism of the present invention, the maintenance locking button includes a button body and a reset spring, and the reset spring drives the button body to pop up when the discrimination signal indicates that the busbar is energized.

[0011] In a preferred embodiment of the shielding mechanism of the present invention: the driving member is provided with a mating portion cooperating with the locking portion, the locking portion includes an electromagnet and a spring, the electromagnet drives the lock catch to insert into the mating portion when energized, and the spring drives the lock catch to disengage from the mating portion when the electromagnet is de-energized.

[0012] The beneficial effects of the present invention are as follows: the status detection component monitors the energized state of the high-voltage busbar in real time through current or voltage sensors, and generates a judgment signal to drive the locking component to engage the mating portion of the driver. The locking mechanism automatically restricts the movement of the driver when the busbar is energized, preventing safety hazards caused by misoperation. Compared to traditional locking methods that rely on manual judgment, the intelligent detection and locking system of the present invention significantly improves operational safety and system reliability through signal-driven automated response.

[0013] Through the coordinated action of the button, return spring, and control circuitry, it automatically pops up when the busbar is energized to indicate the status. When manually pressed, it disconnects power to the locking mechanism, releasing the latch. The mechanical design of the return spring and its linkage with the detection signal seamlessly integrate the status indication and unlocking functions. Compared to traditional fixed locking mechanisms, the maintenance lock button of this invention offers flexibility and user-friendly operation.

[0014] Given that in actual use, there is still a problem in the operation of high-voltage busbar equipment, how to effectively remind operators of the equipment's energized status to avoid the risk of misoperation.

[0015] In order to solve the above technical problems, the present invention also provides the following technical solutions: a high-voltage switch cabinet locking device, including a shielding mechanism, and a switch cabinet body, which is provided with a high-voltage wiring port; a switch trolley, which can be moved between the insertion position and the maintenance position of the switch cabinet body to achieve docking or disconnection with the high-voltage wiring port; a warning light, which is linked to the maintenance locking button, and the warning light is turned on when the maintenance locking button pops up.

[0016] In a preferred embodiment of the high-voltage switch cabinet locking device of the present invention: sliding rods are passed through both ends of the baffle, and the baffle can slide along the sliding rods to cover or expose the high-voltage wiring port, and the baffle is symmetrical inside the switch cabinet body.

[0017] In a preferred embodiment of the high-voltage switchgear locking device of the present invention: the driving member is rotatably arranged on a fixed seat, and the fixed seat is fixed on the switchgear body; the control interface is arranged on one side of the driving member, and the control interface is used to dock with an external tool to drive the driving member to rotate.

[0018] In a preferred embodiment of the high-voltage switchgear locking device of the present invention: it also includes a maintenance locking button, which is connected to the control circuit of the locking mechanism. The maintenance locking button mechanically pops up when the judgment signal indicates that the busbar is energized. When the maintenance locking button is manually pressed, the power supply of the locking mechanism is disconnected.

[0019] The beneficial effect of this invention lies in that the warning light automatically illuminates when the button is released, emitting a red warning light to indicate the high-voltage busbar is energized, using a red LED and internal contact circuit. This linkage design significantly improves the operator's awareness of equipment status through precise control of contact closure and intuitive feedback from the warning light, reducing the risk of misoperation.

[0020] The baffle plate is symmetrically configured and has a sliding path parallel to the axis of the high-voltage interface, ensuring that the high-voltage interface opening is accurately covered in the first position and the interface is fully exposed in the second position to achieve seamless connection, thereby optimizing space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Among them:

[0022] Figure 1 A schematic side view of a transmission member of the shielding mechanism is shown;

[0023] Figure 2 A schematic front view of a high-voltage switchgear locking device is shown;

[0024] Figure 3 A perspective view of a driving member of the shielding mechanism is shown;

[0025] Figure 4 A side view of the locking mechanism of the shutter mechanism is shown. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0027] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0028] Reference Figure 1-4 , this embodiment provides a shielding mechanism, a shielding member 1; a control component 2, including a transmission member 21 and a driving member 22, the shielding member 1 is connected to the driving member 22 through the transmission member 21; the transmission member 21 includes a first rod body 211 and a second rod body 212, one end of the first rod body 211 and the second rod body 212 are both rotatably connected to the shielding member 1, and one end of the second rod body 212 is slidably arranged on the first rod body 211; the locking mechanism 4, the locking mechanism 4 includes a locking part 41, the locking part 41 movably penetrates the driving member 22 to limit the movement of the driving member 22, thereby preventing the shielding member 1 from moving from the first position to the second position.

[0029] In this embodiment, the shielding member 1 is disposed near the high-voltage interface. The shielding plate 11 is capable of sliding between a first position, where the shielding plate 11 covers the high-voltage interface, and a second position, where the shielding plate 11 is removed, exposing the high-voltage interface.

[0030] The transmission member 21 is connected to the shielding plate 11. The transmission member 21 transmits motion to the shielding plate 11 through its geometric structure, so that the shielding member 1 moves along a predetermined path.

[0031] The driving member 22 is connected to the transmission member 21 and is used to drive the movement of the first rod 211 and the second rod 212 , thereby driving the shielding member 1 to move from the first position to the second position.

[0032] The locking portion 41 can engage with the mating portion 411 on the driver 22 under certain conditions. The locking mechanism 4 is connected to the status detection element 3 via a signal line and receives a detection signal. When the signal indicates that the busbar is energized, the actuator of the locking portion 41 is activated, pushing the locking portion 41 into engagement with the mating portion 411, thereby restricting the movement of the driver 22.

[0033] refer to Figure 1-2In one embodiment provided in the present application, the shielding member 1 includes two symmetrically distributed baffles 11, and the sliding direction of the baffles 11 is parallel to the high-pressure interface. The end of the first rod body 211 away from the baffle 11 is rotatably connected to the driving member 22. The second rod body 212 includes a first connecting rod 2121 and a second connecting rod 2122 connected to each other. The first rod body 211 is provided with a slot 2111 for accommodating the sliding of the first connecting rod 2121, and one end of the second connecting rod 2122 is hinged to the baffle 11. This arrangement of the transmission member 21 enables the rotation of the first rod body 211 to transmit torque through the second rod body 212, driving the baffle 11 to move along the sliding direction.

[0034] In this embodiment, when the first rod 211 moves, the force is transmitted to the second link 2122 via the first link 2121 in the slot 2111. Since the second link 2122 is hinged to the baffle 11, the transmitted force acts on the baffle 11 via the second link 2122, causing the two baffles 11 to move in a predetermined sliding direction, that is, away from each other.

[0035] The combination of slot 2111 and hinge allows for the transition from the movement of first rod 211 to the sliding motion of two baffles 11. Slot 2111 limits the motion path of first link 2121, ensuring stable force transmission. The hinged structure allows second link 2122 to flexibly transmit force to baffles 11, ensuring continuous and precise movement.

[0036] refer to Figure 1-4 As an optional embodiment, it includes a maintenance locking button 5, which is connected to the control circuit of the locking mechanism 4. The maintenance locking button 5 mechanically pops up when the judgment signal indicates that the bus is energized. When the maintenance locking button 5 is manually pressed, the power supply of the locking mechanism 4 is disconnected, so that the lock 412 is disengaged from the mating portion 411, and the lock on the drive rod is released; the maintenance locking button 5 includes a button body and a reset spring. The reset spring drives the button body to pop up when the judgment signal indicates that the bus is energized.

[0037] refer to Figure 3-4 As an optional embodiment, the locking portion 41 includes an electromagnet and a spring. The electromagnet drives the lock catch 412 to insert into the matching portion 411 when energized, and the spring drives the lock catch 412 to disengage from the matching portion 411 when the electromagnet is de-energized.

[0038] In this embodiment, an electromagnet is disposed within locking portion 41. When energized, it generates a magnetic force that drives lock catch 412 to move in a specified direction, allowing lock catch 412 to be inserted into mating portion 411. A spring is connected to lock catch 412 and is in a compressed or stretched state. When the electromagnet is de-energized, the spring returns to its original state, releasing its stored elastic force and driving lock catch 412 to move in the opposite direction, disengaging from mating portion 411. Mating portion 411 is a fixed structure that matches the shape and size of lock catch 412 and is used to receive insertion or removal of lock catch 412.

[0039] Reference Figure 1 This embodiment provides a high-voltage switch cabinet locking device, including a switch cabinet body 6, in which a high-voltage wiring port is provided; a switch trolley, which can be moved between an insertion position and an inspection position of the switch cabinet body 6 to achieve docking or disconnection with the high-voltage wiring port; a warning light 7, which is linked to a maintenance locking button 5. The warning light 7 is turned on when the maintenance locking button 5 pops up, driving the red warning light to light up.

[0040] In this embodiment, a high-voltage connection port is fixed inside the switchgear body 6 for connection to an external high-voltage busbar. A switch carriage is also located within the switchgear body 6. This carriage moves along a predetermined path within the switchgear body 6 via a guide rail or similar structure. It has two positions: an insertion position and an inspection position. In the insertion position, the carriage's connection terminals align with the high-voltage connection port, establishing an electrical connection. In the inspection position, the carriage's connection terminals are separated from the high-voltage connection port, disconnecting the electrical connection.

[0041] Warning light 7 is connected to maintenance lock button 5 via an electrical circuit. Maintenance lock button 5 is a mechanical button with two states: pop-up and pressed. It is fixed to the outside of the switchgear body 6. The button's internal structure is connected to the power supply circuit for warning light 7 via contacts or a switch structure. When the button is in the pop-up state, the circuit is closed, and warning light 7 illuminates. When the button is pressed, the circuit is disconnected, and warning light 7 goes out.

[0042] refer to Figure 1-2 As an optional embodiment, in this embodiment, sliding rods 111 are passed through both ends of the baffle 11. The baffle 11 can slide along the sliding rods 111 to cover or expose the high-voltage wiring port, and the baffle 11 is symmetrical inside the switch cabinet body 6; the driving member 22, the driving member 22 is rotatably set on the fixing seat 221, and the fixing seat 221 is fixed to the switch cabinet body 6; the control interface, the control interface is set on one side of the driving member 22, and the control interface is used to connect with an external tool to drive the driving member 22 to rotate; the warning light 7 includes a red light-emitting diode and a wire, the wire is connected to the internal contact of the maintenance lock button 5, and the internal contact is closed when the maintenance lock button 5 pops up.

[0043] In this embodiment, the baffle 11 is symmetrically arranged inside the switch cabinet body 6, and a slide rod 111 is passed through each end of the baffle 11 and fixed to the switch cabinet body 6. The slide rod 111 is a slender rod-shaped structure, and the baffle 11 is guided by the slide rod 111 to move along a straight path within the switch cabinet body 6.

[0044] The driver 22 is mounted on a fixed base 221. The fixed base 221 is a rigid support structure fixed to the interior of the switch cabinet body 6 and is used to stabilize the position of the driver 22. The driver 22 is rotationally connected to the fixed base 221 via its rotating shaft, and its rotation can be driven by an external force.

[0045] The control interface is a mechanical connection structure located on one side of the driver 22. Its shape and size are adapted to the docking of an external tool. Through geometric features such as notches or protrusions, the control interface forms a temporary connection with the external tool, thereby transmitting the rotational force of the external tool to the driver 22, driving it to rotate around the fixed base 221.

[0046] Warning light 7 consists of a red LED and a connecting wire. One end of the wire is electrically connected to the LED, and the other end is connected to the internal contacts of the maintenance lock button 5. The maintenance lock button 5 is a mechanical switch that can be pushed or released, and has a pair of contacts inside. When the button is in the released state, the contacts close, forming a complete current path between the wire and the LED.

[0047] In this embodiment, the maintenance locking button 5 consists of a button body, a return spring, and a switch connected to the control circuit of the locking mechanism 4. The lock catch 412 is fixed in the matching part 411 by electromagnetic force, locking the drive rod. The button body is mechanically connected to the switch through the return spring. When the judgment signal of the status detection part 3 indicates that the bus is energized, the return spring is released in a controlled manner, pushing the button body out and keeping the switch in the off state. When the button body is manually pressed, the switch is actuated, cutting off the power supply of the locking mechanism 4, and the lock catch 412 loses the electromagnetic force, detaches from the matching part 411, and releases the lock on the drive rod.

[0048] When the status detector 3 detects that the busbar is energized, the signal is transmitted to the control circuit, triggering the electronic control element to release the restraint mechanism (such as a buckle or stopper) on the reset spring. The reset spring then returns to its original state, pushing the button body to slide along the housing, completing the ejection action.

[0049] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A shielding mechanism, characterized in that: include, A shielding member (1); A control assembly (2) comprises a transmission member (21) and a driving member (22), wherein the shielding member (1) is connected to the driving member (22) via the transmission member (21); The transmission member (21) comprises a first rod body (211) and a second rod body (212); one end of each of the first rod body (211) and the second rod body (212) is rotatably connected to the shielding member (1); and one end of the second rod body (212) is slidably disposed on the first rod body (211); A locking mechanism (4) includes a locking portion (41), wherein the locking portion (41) movably penetrates the driving member (22) to limit the movement of the driving member (22), thereby preventing the shielding member (1) from moving from the first position to the second position.

2. The shielding mechanism according to claim 1, characterized in that: The shielding member (1) comprises two symmetrically distributed baffles (11), and the sliding direction of the baffles (11) is parallel to the high-voltage interface.

3. The shielding mechanism according to claim 2, characterized in that: One end of the first rod (211) away from the baffle (11) is rotatably connected to the driving member (22).

4. The shielding mechanism according to claim 3, characterized in that: The second rod body (212) comprises a first connecting rod (2121) and a second connecting rod (2122) connected to each other. The first rod body (211) is provided with a slot (2111) for accommodating the sliding of the first connecting rod (2121). One end of the second connecting rod (2122) is hinged to the baffle (11).

5. The shielding mechanism according to claim 4, characterized in that: The driving member (22) is provided with a matching portion (411) that matches the locking portion (41).

6. The shielding mechanism according to claim 5, characterized in that: The locking portion (41) comprises a lock catch (412), an electromagnet and a spring. The electromagnet drives the lock catch (412) to be inserted into the matching portion (411) when power is on, and the spring drives the lock catch (412) to be disengaged from the matching portion (411) when power is off.

7. A high-voltage switchgear locking device, characterized in that: comprising the shielding mechanism according to any one of claims 1 to 6, and A switch cabinet body (6) is provided with a high-voltage connection port inside; The warning light (7) is connected to the maintenance lock button (5).

8. The high-voltage switchgear locking device according to claim 7, characterized in that: Slide rods (111) are passed through both ends of the baffle (11). The baffle (11) can slide along the slide rods (111) to cover or expose the high-voltage connection port. The baffle (11) is symmetrical to the inside of the switch cabinet body (6).

9. The high-voltage switchgear locking device according to claim 8, characterized in that: The driving member (22) is rotatably arranged on a fixing seat (221), and the fixing seat (221) is fixed on the switch cabinet body (6).

10. The high-voltage switchgear locking device according to claim 9, characterized in that: It also includes a status detection component (3) connected to the busbar at the high voltage interface; The state detection component (3) includes an inspection and locking button (5), and the inspection and locking button (5) includes a button body and a reset spring, and the reset spring is fixed at the bottom of the button body.

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