Armored centrally-mounted switch cabinet frame with interlocking device

Abstract

The utility model provides an armored centrally-mounted switch cabinet frame with an interlocking device, which belongs to the technical field of centrally-mounted switch cabinets and comprises a switch cabinet body, a cabinet door and a mounting plate, the cabinet door is rotatably arranged on the right side of the outer surface of the switch cabinet body through hinges, and the mounting plate is mounted at the bottom of the switch cabinet body. A knife switch connected in series with a circuit breaker in the switch cabinet is mounted on the mounting plate, and an interlocking assembly for preventing the cabinet door from being opened when the knife switch is closed is also mounted on the mounting plate; according to the utility model, through the arrangement of the interlocking assembly, when the cabinet door is closed and the knife switch is in a closed state, the knife switch on the knife switch is embedded into the rectangular groove to lock the lock rod, and the lock rod is inserted into the lock sleeve on the cabinet door, so that the effect of preventing the cabinet door from being opened is realized, and the cabinet door is prevented from being opened when the knife switch is in the closed state; and the safety of maintenance personnel is ensured.

Description

Technical Field

[0001] This utility model relates to the field of center-mounted switchgear technology, and in particular to an armored center-mounted switchgear frame with an interlocking device. Background Technology

[0002] A medium-voltage switchgear, also known as a metal-clad medium-voltage withdrawable switchgear, is a high-voltage power distribution device with a maximum operating voltage of 3.6 / 7.2 / 12kV. It is an indoor complete power distribution device for a three-phase AC 50Hz single busbar segmented system or a double busbar segmented system. It is used to receive and distribute 3.6-12kV network power and to control, protect, monitor and measure power circuits.

[0003] The internal structure of existing medium-voltage switchgear is simple. When the circuit breaker inside the medium-voltage switchgear is in normal operation and closed, the cabinet door can still be opened. When maintenance personnel are performing maintenance, there is a possibility that they will forget to disconnect the circuit breaker and open the cabinet door, which poses a risk of electric shock. Therefore, an armored medium-voltage switchgear frame with an interlocking device is designed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the above-mentioned background technology, and to propose an armored central switch cabinet frame with interlocking device.

[0005] The technical problem to be solved by this utility model is to provide an armored central switchgear frame with an interlocking device, which solves the problem that in the prior art, the cabinet door can still be opened when the circuit breaker in the central switchgear is closed during normal operation, which poses a risk of electric shock.

[0006] This utility model provides an armored, centrally located switchgear frame with an interlocking device, including a switchgear cabinet, a cabinet door, and a mounting plate. The cabinet door is rotatably mounted on the right side of the outer surface of the switchgear cabinet via a hinge. The mounting plate is installed at the bottom of the switchgear cabinet, and a knife switch connected in series with the circuit breaker inside the switchgear is installed on the mounting plate. An interlocking component is also installed on the mounting plate to prevent the cabinet door from opening when the knife switch is closed.

[0007] Preferably, the knife switch includes a rotating rod and a knife switch. The rotating rod is rotatably mounted on the left side of the upper surface of the mounting plate via a fixed plate. The knife switch is fixedly mounted on the rotating rod. A stationary contact plate is fixedly mounted on the right side of the upper surface of the mounting plate. A turntable is fixedly mounted on the inner end of the rotating rod.

[0008] Preferably, the knife switch, the stationary contact plate, and the circuit breaker are connected in series, and the knife switch is in contact with the stationary contact plate when it is in a horizontal state.

[0009] Preferably, the inner end of the rotating rod extends through the inner side of the switch cabinet.

[0010] Preferably, the interlocking assembly includes a locking rod and a locking sleeve. The locking rod slides on the upper surface of the mounting plate, and the inner end of the locking rod penetrates the inner surface of the switch cabinet. The mounting plate is fixedly installed on the inner side of the upper surface of the locking rod. A spring is fixedly installed between the mounting plate and the inner surface of the switch cabinet. A handle is fixedly installed on the inner surface of the locking rod. A rectangular groove is opened on the upper surface of the locking rod. A locking sleeve is installed through the lower surface of the cabinet door.

[0011] Preferably, the lock sleeve matches the lock rod, and when the cabinet door is closed, the outer end of the lock rod is inserted into the lock sleeve, at which time the spring is in a naturally extended state.

[0012] Preferably, the gate is matched with a rectangular slot.

[0013] Preferably, when the spring is in its naturally extended state, the rectangular groove is directly below the knife switch, and when the knife switch is in the closed state, the knife switch is embedded in the rectangular groove.

[0014] Compared with the prior art, this utility model has at least the following beneficial effects:

[0015] 1. This utility model is equipped with an interlocking component. When the cabinet door is closed and the knife switch is in the closed state, the knife switch on the knife switch is embedded in the rectangular groove to lock the locking rod. At this time, the locking rod is inserted into the lock sleeve on the cabinet door, thereby preventing the cabinet door from being opened when the knife switch is closed and ensuring the safety of maintenance personnel.

[0016] 2. When the cabinet door needs to be opened for maintenance, the present invention can be used to rotate the turntable, which drives the rotating rod and the switch to rotate. The switch will separate from the stationary contact plate, and the circuit breaker will be disconnected. At this time, the switch will not be in the rectangular slot. Then, the handle can be grasped and the locking rod pulled inward. The locking rod will disengage from the locking sleeve on the cabinet door, which facilitates the opening of the cabinet door and makes it convenient for staff to maintain and repair the electronic components inside the switch cabinet. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a vertical sectional view of the overall structure of this utility model.

[0020] Figure 3This is a three-dimensional schematic diagram of a partial structure of the present invention. Figure 1 .

[0021] Figure 4 This is a three-dimensional schematic diagram of a partial structure of the present invention. Figure 2 .

[0022] [Figure Labels]

[0023] 1. Cabinet body; 2. Cabinet door; 201. Lock sleeve; 3. Mounting plate one; 4. Locking rod; 401. Mounting plate two; 402. Spring; 403. Handle; 404. Rectangular groove; 5. Knife switch; 501. Rotating rod; 502. Knife switch; 503. Stationary contact plate; 504. Turntable. Detailed Implementation

[0024] Example:

[0025] like Figures 1-4 As shown, an embodiment of this utility model provides an armored, centrally located switchgear frame with an interlocking device, including a switchgear cabinet 1, a cabinet door 2, and a mounting plate 3. The cabinet door 2 is rotatably mounted on the right side of the outer surface of the switchgear cabinet 1 via a hinge. The mounting plate 3 is installed at the bottom of the switchgear cabinet 1. A knife switch 5 connected in series with the circuit breaker inside the switchgear is installed on the mounting plate 3. An interlocking component is also installed on the mounting plate 3 to prevent the cabinet door 2 from opening when the knife switch 5 is closed.

[0026] In this embodiment, the knife switch 5 includes a rotating rod 501 and a knife switch 502. The rotating rod 501 is rotatably mounted on the left side of the upper surface of the mounting plate 3 via a fixing plate. The knife switch 502 is fixedly mounted on the rotating rod 501. A stationary contact plate 503 is fixedly mounted on the right side of the upper surface of the mounting plate 3. A turntable 504 is fixedly mounted on the inner end of the rotating rod 501.

[0027] In this embodiment, the knife switch 502 and the stationary contact plate 503 are connected in series with the circuit breaker. When the knife switch 502 is in a horizontal state, it contacts the stationary contact plate 503, which facilitates the contact between the knife switch 502 and the stationary contact plate 503 and achieves the effect of connecting the circuit breaker.

[0028] In this embodiment, the inner end of the rotating rod 501 passes through the inner side of the switch cabinet body 1, so that the rotating rod 501 can be rotated when the cabinet door 2 is closed.

[0029] In this embodiment, the interlocking assembly includes a locking rod 4 and a locking sleeve 201. The locking rod 4 slides on the upper surface of the mounting plate 3, and the inner end of the locking rod 4 penetrates the inner surface of the switch cabinet 1. A mounting plate 401 is fixedly installed on the inner side of the upper surface of the locking rod 4. A spring 402 is fixedly installed between the mounting plate 401 and the inner surface of the switch cabinet 1. A handle 403 is fixedly installed on the inner surface of the locking rod 4. A rectangular groove 404 is opened on the upper surface of the locking rod 4. The locking sleeve 201 penetrates the lower surface of the cabinet door 2.

[0030] In this embodiment, the lock sleeve 201 matches the lock rod 4, and when the cabinet door 2 is in the closed state, the outer end of the lock rod 4 is inserted into the lock sleeve 201. At this time, the spring 402 is in a naturally extended state, which achieves the effect of preventing the cabinet door 2 from opening.

[0031] In this embodiment, the knife gate 502 is matched with the rectangular slot 404, which makes it easy for the knife gate 502 to be inserted into the rectangular slot 404.

[0032] In this embodiment, when the spring 402 is in its naturally extended state, the rectangular groove 404 is directly below the knife switch 502. When the knife switch 5 is in the closed state, the knife switch 502 is embedded in the rectangular groove 404, thereby achieving the effect of positioning the locking rod 4.

[0033] By setting up an interlocking component, when the cabinet door 2 is closed and the knife switch 5 is in the closed state, the knife switch 502 on the knife switch 5 is embedded in the rectangular groove 404 to lock the locking rod 4. At this time, the locking rod 4 is inserted into the locking sleeve 201 on the cabinet door 2, thereby preventing the cabinet door 2 from being opened and ensuring the safety of maintenance personnel.

[0034] When cabinet door 2 needs to be opened for maintenance, the turntable 504 is rotated, which drives the rotating rod 501 and the switch 502 to rotate. The switch 502 separates from the stationary contact plate 503, and the circuit breaker is disconnected. At this time, the switch 502 is not in the rectangular slot 404. Then, the handle 403 is grasped and the locking rod 4 is pulled inward. The locking rod 4 disengages from the locking sleeve 201 on the cabinet door 2, which facilitates the opening of the cabinet door 2 and makes it convenient for staff to maintain and repair the electronic components inside the switch cabinet 1.

[0035] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these should also be considered within the scope of protection of this utility model. These will not affect the implementation effect of this utility model or the practicality of the patent.

Claims

1. A frame for an armored, centrally located switchgear with an interlocking device, characterized in that: The switch cabinet includes a cabinet body (1), a cabinet door (2), and a mounting plate (3). The cabinet door (2) is provided on the right side of the outer surface of the switch cabinet body (1) by a hinge. The bottom of the switch cabinet body (1) is equipped with a mounting plate (3). A knife switch (5) connected in series with the circuit breaker inside the switch cabinet is installed on the mounting plate (3). An interlocking component is also installed on the mounting plate (3) to prevent the cabinet door (2) from opening when the knife switch (5) is closed. The interlocking assembly includes a locking rod (4) and a locking sleeve (201). The locking rod (4) slides on the upper surface of the mounting plate (3), and the inner end of the locking rod (4) penetrates the inner surface of the switch cabinet (1). A mounting plate (401) is fixedly installed on the inner side of the upper surface of the locking rod (4). A spring (402) is fixedly installed between the mounting plate (401) and the inner surface of the switch cabinet (1). A handle (403) is fixedly installed on the inner surface of the locking rod (4). A rectangular groove (404) is opened on the upper surface of the locking rod (4). A locking sleeve (201) is installed through the lower surface of the cabinet door (2).

2. The armored, centrally located switchgear frame with interlocking device according to claim 1, characterized in that: The knife switch (5) includes a rotating rod (501) and a knife switch (502). The rotating rod (501) is rotatably mounted on the left side of the upper surface of the mounting plate (3) via a fixing plate. The knife switch (502) is fixedly mounted on the rotating rod (501). A stationary contact plate (503) is fixedly mounted on the right side of the upper surface of the mounting plate (3). A turntable (504) is fixedly mounted on the inner end of the rotating rod (501).

3. The armored, centrally located switchgear frame with interlocking device according to claim 2, characterized in that: The knife switch (502) and the stationary contact plate (503) are connected in series with the circuit breaker. When the knife switch (502) is in a horizontal state, it is in contact with the stationary contact plate (503).

4. The armored, centrally located switchgear frame with interlocking device according to claim 3, characterized in that: The inner end of the rotating rod (501) passes through the inner side of the switch cabinet body (1).

5. The armored, centrally located switchgear frame with interlocking device according to claim 4, characterized in that: The lock sleeve (201) matches the lock rod (4), and when the cabinet door (2) is closed, the outer end of the lock rod (4) is inserted into the lock sleeve (201), at which time the spring (402) is in a naturally extended state.

6. The armored, centrally located switchgear frame with interlocking device according to claim 5, characterized in that: The guillotine (502) is matched with the rectangular slot (404).

7. The armored, centrally located switchgear frame with interlocking device according to claim 6, characterized in that: When the spring (402) is in its naturally extended state, the rectangular groove (404) is directly below the knife switch (502). When the knife switch (5) is in the closed state, the knife switch (502) is embedded in the rectangular groove (404).

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