Drawer type low-voltage switch cabinet

Abstract

The utility model relates to the technical field of low-voltage switch cabinets, and discloses a drawer type low-voltage switch cabinet which comprises a cabinet body, a plurality of unit grooves are formed in the cabinet body, drawer units are arranged in the unit grooves, self-locking rails are arranged on the two sides of the drawer units in the unit grooves, and each self-locking rail comprises a guide rail arranged on the cabinet body. Sliding rails are arranged on the inner sides of the guide rails in a sliding mode, the sliding rails are connected with the drawer units, and positioning rods are arranged on the sliding rails. Through cooperative use of the unit groove, the drawer unit and the self-locking track, during drawing, a worker holds a T-shaped rod by hand and pulls a connecting rod to move, so that the connecting rod is separated from a positioning rod, and under the action of gravity, when the positioning rod is separated from a positioning hole, locking of a guide rail and a sliding rail is released and a reset unit is released, the elastic force of a spring pushes the positioning rod to move; and the guide rail and the sliding rail can be fixed, and the beneficial effects of being high in stability and convenient to operate are achieved.

Description

Technical Field

[0001] This application relates to the technical field of low-voltage switch cabinets, and particularly to a drawer-type low-voltage switch cabinet. Background Art

[0002] In the power distribution system, as a key power distribution and control device, the design of the low-voltage switch cabinet directly affects the safety, reliability, and maintainability of the power system. Currently, most of the low-voltage switch cabinets widely used in the market adopt fixed or simple pull-out designs.

[0003] For the drawer unit of the traditional low-voltage switch cabinet, generally, a knob is used to drive a rotating rod to rotate to realize the opening and closing operations of the circuit breaker. At the same time, the connecting rod is driven to rotate to drive the locking rod to move, so as to realize the locking and separation of the drawer unit from the cabinet body. It can complete the "two-in-one" action of locking / powering on, and can effectively prevent misoperation. However, it lacks an effective self-locking mechanism in the open state, resulting in the drawer being prone to accidental movement in the open state, which not only affects the stability of the power system but also may cause safety accidents. Utility Model Content

[0004] In order to solve the problem that the drawer unit of the traditional low-voltage switch cabinet realizes the opening and closing and locking of the circuit breaker through a knob, but lacks a self-locking mechanism in the open state, is prone to accidental movement, and affects safety and stability, this application provides a drawer-type low-voltage switch cabinet.

[0005] A drawer-type low-voltage switch cabinet provided by this application adopts the following technical solutions:

[0006] A drawer-type low-voltage switch cabinet includes a cabinet body, on which several unit slots are provided. A drawer unit is arranged in the unit slot, and self-locking tracks are arranged on both sides of the drawer unit in the unit slot.

[0007] The self-locking track includes a guide rail arranged on the cabinet body. A slide rail is slidably arranged inside the guide rail. The slide rail is connected to the drawer unit. A positioning rod is arranged on the slide rail for locking the relative positions of the guide rail and the slide rail. A reset unit is arranged on the slide rail for driving the positioning rod to automatically reset.

[0008] Preferably, the guide rail includes a track plate arranged on the cabinet body, and a positioning hole adapted to the positioning rod is arranged on the track plate.

[0009] Preferably, the slide rail includes a track bar installed on the drawer unit. The lower end of the positioning rod passes through the track bar and is slidably connected to the track bar.

[0010] Preferably, the drawer unit includes a drawer arranged between two track bars, and several handles are arranged on the drawer.

[0011] Preferably, the reset unit includes a T-shaped rod disposed on the drawer and located inside the handle. The end of the T-shaped rod slides through the drawer and is connected to a connecting rod. A spring is disposed between the connecting rod and the drawer to drive the connecting rod to reset.

[0012] Preferably, the bottom of the positioning rod is a spherical structure, and an inclined surface adapted to the positioning rod is provided on the connecting rod.

[0013] In summary, the present application includes the following beneficial technical effects:

[0014] By the combined use of the unit slot, the drawer unit, and the self-locking track, when pulling and pushing, the operator holds the T-shaped rod by hand and pulls the connecting rod to move, so that the connecting rod is separated from the positioning rod. Under the action of gravity, the positioning rod is separated from the positioning hole, and the locking between the guide rail and the slide rail is released. During this process, the spring is compressed. When the reset unit is released, the elastic force of the spring pushes the positioning rod to move, so that the positioning rod moves upward to reset, and the guide rail and the slide rail can be fixed. Compared with the prior art, it has the effects of high stability and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a first perspective three-dimensional structural schematic diagram of an embodiment of the application;

[0016] Figure 2 is a second perspective three-dimensional structural schematic diagram of an embodiment of the application;

[0017] Figure 3 is a third perspective three-dimensional structural schematic diagram of an embodiment of the application.

[0018] Description of the reference numerals: 1, cabinet body; 2, unit slot; 3, drawer unit; 301, drawer; 302, handle; 4, self-locking track; 401, guide rail; 4011, track plate; 4012, positioning hole; 402, slide rail; 4021, track bar; 4022, roller; 403, reset unit; 4031, connecting rod; 4032, T-shaped rod; 4033, spring; 404, positioning rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further describes the present application in detail with reference to the Figures 1-3 drawings.

[0020] An embodiment of the present application discloses a drawer-type low-voltage switchgear. Refer to Figures 1-3, A drawer - type low - voltage switchgear, comprising a cabinet body 1 for arranging low - voltage incoming and outgoing lines. A number of unit slots 2 are preset on the cabinet body 1, and static contacts connected to the low - voltage incoming and outgoing lines are pre - installed on the unit slots 2. A drawer unit 3 capable of sliding in and out of the cabinet is installed inside the unit slot 2. The drawer unit 3 includes a drawer 301 on which electrical components are installed, such as circuit breakers, fuses, current transformers, ammeters, voltmeters, etc. The opening and closing of the circuit breaker are controlled by a knob unit installed on the drawer 301. Handles 302 are installed on both the left and right sides of the drawer 301 to facilitate the staff to pull the drawer 301.

[0021] Refer to Figure 3 , Self - locking tracks 4 are installed on both sides of the drawer unit 3 in the unit slot 2. The self - locking track 4 includes a guide rail 401 installed on the cabinet body 1. The guide rail 401 includes a track plate 4011 installed on the cabinet body 1. Positioning holes 4012 are opened on the track plate 4011, and a positioning rod 404 slides inside the positioning hole 4012. A slide rail 402 is slidably installed inside the guide rail 401. The slide rail 402 includes a track bar 4021 installed on the drawer 301. Rollers 4022 are installed on both the track bar 4021 and the track plate 4011. The rolling support of the track plate 4011 for the track bar 4021 is realized through the rollers 4022 to facilitate the movement of the track bar 4021. The lower end of the positioning rod 404 passes through the track bar 4021 and is slidably connected to the track bar 4021.

[0022] Refer to Figure 2 , A reset unit 403 is installed on the slide rail 402. The reset unit 403 includes a T - shaped rod 4032 installed on the drawer 301 and located inside the handle 302. The end of the T - shaped rod 4032 slidably passes through the drawer 301 and is connected to a connecting rod 4031. A spring 4033 is installed between the connecting rod 4031 and the drawer 301. The bottom of the positioning rod 404 is a spherical structure, and an inclined surface adapted to the positioning rod 404 is installed on the connecting rod 4031 to facilitate the relative sliding between the connecting rod 4031 and the positioning rod 404.

[0023] The implementation principle of a drawer - type low - voltage switchgear in an embodiment of this application is as follows:

[0024] When pulling out, the staff holds the handle 302 and the T-shaped rod 4032 by hand, making the T-shaped rod 4032 close to the handle 302, pulling the connecting rod 4031 to move, so that the connecting rod 4031 separates from the positioning rod 404. Under the action of gravity, the positioning rod 404 separates from the positioning hole 4012, releasing the locking of the guide rail 401 and the slide rail 402. During this process, the spring 4033 is compressed. At this time, the staff can pull the drawer 301 outwards through the handle 302, and the drawer drives the slide rail 402 to slide along the guide rail 401. The rollers 4022 on the slide rail 402 roll on the track bar 4011 of the guide rail 401, reducing friction and making the sliding of the drawer unit smoother.

[0025] After the maintenance work is completed, the staff pushes the drawer 301 back to the original position through the handle 302. After the drawer unit 3 is pushed back to the original position, it is connected to the static contact in the unit slot 2 again to ensure the normal operation of the power components. During the pushing-back process, the positioning rod 404 contacts the inclined surface on the 4031 again. As the drawer is pushed forward, when the positioning rod 404 aligns with the positioning hole 4012 on the guide rail 401, the elastic force of the spring 4033 pushes the T-shaped rod 4032 and the connecting rod 4031 to move, so that the positioning rod 404 returns to the positioning hole 4012, realizing the relocking of the drawer, which can ensure that the drawer unit 2 will not shift when the drawer unit 2 is in the off state.

[0026] Finally, several points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the communication inside two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the described object changes, the relative position relationship may change;

[0027] Second: In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the usual designs. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0028] Finally: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

[0029] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered by the protection scope of this application.

Claims

1. A drawer-type low-voltage switchgear, comprising a cabinet body (1), wherein a plurality of unit slots (2) are arranged on the cabinet body (1), and a drawer unit (3) is arranged in the unit slot (2), characterized in that: Self-locking tracks (4) are provided on both sides of the drawer unit (3) inside the unit cell (2). The self-locking track (4) includes a guide rail (401) provided on the cabinet body (1). A slide rail (402) is slidably provided inside the guide rail (401). The slide rail (402) is connected to the drawer unit (3). A positioning rod (404) is provided on the slide rail (402) for locking the relative positions of the guide rail (401) and the slide rail (402). A reset unit (403) is provided on the slide rail (402) for driving the positioning rod (404) to automatically reset.

2. The drawer-type low-voltage switchgear according to claim 1, characterized in that: The guide rail (401) includes a track plate (4011) provided on the cabinet body (1). A positioning hole (4012) adapted to the positioning rod (404) is provided on the track plate (4011).

3. A drawer-type low-voltage switchgear according to claim 1, characterized in that: The slide rail (402) includes a track bar (4021) installed on the drawer unit (3). The lower end of the positioning rod (404) passes through the track bar (4021) and is slidably connected to the track bar (4021).

4. A drawer-type low-voltage switchgear according to claim 3, characterized in that: The drawer unit (3) includes a drawer (301) provided between two track bars (4021). A plurality of handles (302) are provided on the drawer (301).

5. A drawer-type low-voltage switchgear according to claim 4, characterized in that: The reset unit (403) includes a T-shaped rod (4032) provided on the drawer (301) and located inside the handle (302). The end of the T-shaped rod (4032) slidably passes through the drawer (301) and is connected to a connecting rod (4031). A spring (4033) is provided between the connecting rod (4031) and the drawer (301) for driving the connecting rod (4031) to reset.

6. The drawer-type low-voltage switchgear according to claim 5, characterized in that: The bottom of the positioning rod (404) is a spherical structure. An inclined surface adapted to the positioning rod (404) is provided on the connecting rod (4031).

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