A locking device for an environmentally-friendly medium-voltage ring main unit

Abstract

The utility model relates to the technical field of medium voltage ring net cabinet, specifically speaking to a kind of interlocking device for environmental protection type medium voltage ring net cabinet, including mounting bracket, the side of mounting bracket is equipped with locking structure, locking structure includes locking block, the side of mounting bracket is slidably connected with locking block, the side of locking block is equipped with inclined slide groove, the inboard of mounting bracket is slidably connected with driving slide bar, the inboard of driving slide bar is fixedly connected with slide post, slide post is slidably connected between locking block by inclined slide groove, the end of mounting bracket is equipped with positioning structure, positioning structure includes first guide rod and second guide rod, and the both ends of mounting bracket are slidably connected with first guide rod and second guide rod respectively;By setting the mounting bracket of horizontal in ring net cabinet, locking block of mounting bracket side can simultaneously carry out synchronous locking or unlocking to switch located in the same row, avoid switch false touch, improve the convenience of operation simultaneously.

Description

Technical Field

[0001] This utility model relates to an interlocking device, specifically an environmentally friendly interlocking device for medium-voltage ring main units, belonging to the technical field of medium-voltage ring main units. Background Technology

[0002] A ring main unit is an electrical device that houses a group of power transmission and distribution equipment (high-voltage switchgear) within a metal or non-metal insulated cabinet or is configured as a modular ring network power supply unit. Its core components consist of load switches and fuses. It offers advantages such as simple structure, small size, low cost, improved power supply parameters and performance, and enhanced power supply safety. To ensure the safe operation of the circuit breaker, locking devices are typically installed to prevent accidental activation of the circuit breaker switch.

[0003] However, existing circuit breaker locking devices can usually only lock a single circuit breaker switch, and the locking and unlocking operations are usually cumbersome, requiring each switch to be locked or unlocked independently. Utility Model Content

[0004] The purpose of this utility model is to provide an environmentally friendly interlocking device for medium-voltage ring main units in order to solve the above problems. By setting a horizontal mounting bracket inside the ring main unit, the locking block on the side of the mounting bracket can simultaneously lock or unlock the switches located in the same row, thereby avoiding accidental switch contact and improving the convenience of operation.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: an environmentally friendly interlocking device for medium-voltage ring main units, comprising a mounting frame, a locking structure on the side of the mounting frame, the locking structure including a locking block, the locking block being slidably connected to the side of the mounting frame, the locking block having an oblique sliding groove on its side, a driving slide rod being slidably connected to the inner side of the mounting frame, a sliding column being fixedly connected to the inner side of the driving slide rod, the sliding column being slidably connected to the locking block through the oblique sliding groove, and a positioning structure at the end of the mounting frame, the positioning structure including a first guide rod and a second guide rod, the first guide rod and the second guide rod being slidably connected to the two ends of the mounting frame respectively.

[0006] Preferably, a second spring is fixedly connected between the end of the drive slide rod and the mounting bracket, and one side of the inclined slide groove is parallel to the locking block.

[0007] Preferably, a gear is rotatably connected to the inner side of the mounting bracket, and a toothed groove is provided at the end of the drive slide rod, through which the gear meshes with the drive slide rod.

[0008] Preferably, the end of the mounting bracket is slidably connected to an abutment slide rod, which is perpendicular to the drive slide rod.

[0009] Preferably, the side of the abutting slide bar meshes with a gear, and a first spring is fixedly connected between the end of the abutting slide bar and the mounting bracket.

[0010] Preferably, the inner side of the mounting bracket is slidably connected to an inclined block, and a third spring is fixedly connected between the inclined block and the mounting bracket. The end of the inclined block is an inclined structure, and the inclined end of the inclined block is located on the bottom side of the contact slide rod.

[0011] Preferably, the second guide rod has multiple slots on its side, and the inclined block has a locking block fixedly connected to its side, the locking block engaging with the second guide rod through the slots.

[0012] Preferably, the first guide rod has multiple positioning holes on its side, and a positioning rod is slidably connected to the inner side of the mounting bracket. The end of the positioning rod engages with the first guide rod through the positioning holes.

[0013] Preferably, a fourth spring is fixedly connected between the positioning rod and the mounting bracket, and the end of the positioning rod has a hemispherical structure.

[0014] The beneficial effects of this utility model are as follows: A sliding locking block is provided in the middle of the mounting bracket. When the locking block extends, it can prevent the switch from being toggled, thereby avoiding accidental operation by the operator. When the locking block is inside the mounting bracket, the circuit breaker switch can be toggled freely. At this time, the mounting bracket can be moved to the other end along the first guide rod and the second guide rod, which makes it convenient for the operator to operate the circuit breaker switch. In order to control the movement of the locking block, a slanted sliding groove is provided on the side of the locking block. When the drive slide rod inside the mounting bracket slides, the slide column inside the drive slide rod will slide along the slanted sliding groove, and at the same time drive the locking block to slide inside the mounting bracket, which facilitates the control of the extension and retraction of the locking block and makes it convenient to use. 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 schematic diagram of the connection structure between the mounting bracket and the locking block of this utility model;

[0017] Figure 3 for Figure 2 The diagram shown is an enlarged view of the structure of part A.

[0018] Figure 4 for Figure 2 The diagram shown is an enlarged view of the structure of section B.

[0019] Figure 5 This is a schematic diagram of the connection structure between the mounting bracket and the contact slide bar of this utility model;

[0020] Figure 6 for Figure 5 The diagram shown is an enlarged view of the C-section structure.

[0021] Figure 7 This is a schematic diagram of the connection structure between the second guide rod and the mounting bracket of this utility model.

[0022] In the diagram: 1. Mounting bracket; 2. Locking structure; 201. Locking block; 202. Inclined slide groove; 203. Abutting slide rod; 204. Gear groove; 205. Gear; 206. Drive slide rod; 207. First spring; 208. Second spring; 209. Slide column; 3. Positioning structure; 301. First guide rod; 302. Second guide rod; 303. Positioning hole; 304. Inclined block; 305. Third spring; 306. Engaging block; 307. Slot; 308. Positioning rod; 309. Fourth spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-7 As shown, an environmentally friendly interlocking device for medium-voltage ring main units includes a mounting frame 1. The mounting frame 1 has a locking structure 2 on its side, which includes a locking block 201. The locking block 201 is slidably connected to the side of the mounting frame 1. An inclined sliding groove 202 is provided on the side of the locking block 201. A driving slide rod 206 is slidably connected to the inner side of the mounting frame 1. A sliding column 209 is fixedly connected to the inner side of the driving slide rod 206. The sliding column 209 is slidably connected to the locking block 201 through the inclined sliding groove 202. A positioning structure 3 is provided at the end of the mounting frame 1. The positioning structure 3 includes a first guide rod 301 and a second guide rod 302. The first guide rod 301 and the second guide rod 302 are slidably connected to both ends of the mounting frame 1, respectively.

[0025] As a technical optimization of this utility model, a second spring 208 is fixedly connected between the end of the drive slide rod 206 and the mounting bracket 1. One side of the inclined slide groove 202 is parallel to the locking block 201. One side of the inclined slide groove 202 is a straight groove parallel to the locking block 201. When the slide column 209 moves the straight groove part of the inclined slide groove 202, the slide column 209 will push the locking block 201 out of the mounting bracket 1 and at the same time prevent the locking block 201 from returning to its original position, thus ensuring the locking effect of the switch. A gear 205 is rotatably connected to the inner side of the mounting bracket 1. A toothed groove 204 is opened at the end of the drive slide rod 206. The gear 205 meshes with the drive slide rod 206 through the toothed groove 204. An abutment slide rod 203 is slidably connected to the end of the mounting bracket 1. The abutment slide rod 203 is set perpendicular to the drive slide rod 206. The side of the abutment slide rod 203 meshes with the gear 205. A first spring 207 is fixedly connected between the end and the mounting frame 1. To improve the ease of use of the device, an abutment slide rod 203 is vertically slidable at the end of the mounting frame 1. When the cabinet door of the ring main unit is closed, the abutment slide rod 203 will abut against the inside of the cabinet door and slide. When the cabinet door is closed, the abutment slide rod 203 slides to the inside of the mounting frame 1. At this time, through the transmission effect of the gear 205, the slide rod 206 is driven to slide towards the first guide rod 301, and at the same time, the locking block 201 is driven to retract to the inside of the mounting frame 1, so that the circuit breaker can work normally after the cabinet door is closed. When the cabinet door is opened, the abutment slide rod 203 slides out under the push of the first spring 207. At this time, the drive slide rod 206 returns to its position, so that the locking block 201 extends and locks the switch. This allows the operator to automatically lock the circuit breaker switch after opening the cabinet door, avoid accidental contact, and improve safety and convenience.

[0026] As a technical optimization of this utility model, a slidable inclined block 304 is slidably connected to the inner side of the mounting bracket 1. A third spring 305 is fixedly connected between the slidable block 304 and the mounting bracket 1. The end of the slidable block 304 is a slidable structure, and the slidable end of the slidable block 304 is located on the bottom side of the sliding rod 203. Multiple slots 307 are provided on the side of the second guide rod 302. A locking block 306 is fixedly connected to the side of the slidable block 304. The locking block 306 engages with the second guide rod 302 through the slots 307. Multiple positioning holes 303 are provided on the side of the first guide rod 301. A positioning rod 308 is slidably connected to the inner side of the mounting bracket 1. The end of the positioning rod 308 engages with the first guide rod 301 through the positioning holes 303. A fourth spring is fixedly connected between the positioning rod 308 and the mounting bracket 1. The spring 309 and the end of the positioning rod 308 are hemispherical structures. When the operator opens the ring main unit door and needs to operate the circuit breaker switch inside, the user can manually press the abutment slide rod 203 located on the side of the mounting bracket 1. At the same time, the locking block 201 retracts and releases the lock, and the end of the abutment slide rod 203 will be pushed to one side through the inclined end of the inclined block 304, thereby releasing the engagement state between the locking block 306 on the side of the inclined block 304 and the slot 307 on the second guide rod 302. At this time, the operator can move the mounting bracket 1, and with the positioning effect of the positioning rod 308 and the positioning hole 303, move the mounting bracket 1 to the other side and make the locking block 306 engage with the other slot 307 again, so that the switch part of the circuit breaker is exposed for easy operation.

[0027] In use, the circuit breakers in the ring main unit are typically arranged in a row. The first guide rods 301 and second guide rods 302 on both sides of the mounting bracket 1 are installed on either side of the circuit breaker switch inside the ring main unit, positioning the mounting bracket 1 on the side of the switch. A sliding locking block 201 is located in the middle of the mounting bracket 1. When the locking block 201 extends, it prevents the switch from being moved, thus avoiding accidental operation by the operator. When the locking block 201 is inside the mounting bracket 1, the circuit breaker switch can be freely moved. At this time, the mounting bracket 1 can be moved along the first guide rods 301 and second guide rods 302 to the other end, facilitating operation of the circuit breaker switch by the operator. To control the movement of the locking block 201, the locking block 201... The mounting bracket 1 has a slanted slide groove 202 on its side. When the drive slide rod 206 inside the mounting bracket 1 slides, the slide post 209 inside the drive slide rod 206 slides along the slanted slide groove 202, and simultaneously drives the locking block 201 to slide inside the mounting bracket 1, facilitating the control of the extension and retraction of the locking block 201. One side of the slanted slide groove 202 is a straight groove parallel to the locking block 201. When the slide post 209 moves the straight groove part of the slanted slide groove 202, the slide post 209 pushes the locking block 201 out of the mounting bracket 1, while preventing the locking block 201 from returning to its original position, ensuring the locking effect of the switch. To improve the ease of use of the device, an abutment slide rod 203 is vertically slidable at the end of the mounting bracket 1. When the ring main unit door is closed, the sliding rod 203 will abut against the inside of the door and slide. When the door is closed, the sliding rod 203 slides towards the inside of the mounting bracket 1. At this time, through the transmission effect of the gear 205, the sliding rod 206 is driven to slide towards the first guide rod 301, and at the same time, the locking block 201 is driven to retract into the inside of the mounting bracket 1, so that the circuit breaker can work normally after the door is closed. When the door is opened, the sliding rod 203 slides out under the push of the first spring 207. At this time, the sliding rod 206 is driven to return to its position, causing the locking block 201 to extend, thereby locking the switch. This allows the circuit breaker switch to be automatically locked after the operator opens the door, preventing accidental activation and improving safety and convenience. When personnel open the ring main unit cabinet door and need to operate the circuit breaker switch inside, the user can manually press the abutment slide bar 203 located on the side of the mounting bracket 1. This causes the locking block 201 to retract and release the lock. At the same time, the end of the abutment slide bar 203 will be pushed to one side through the inclined end of the inclined block 304, thereby releasing the engagement between the locking block 306 on the side of the inclined block 304 and the slot 307 on the second guide rod 302. At this time, the operator can move the mounting bracket 1, and with the positioning effect of the positioning rod 308 and the positioning hole 303, move the mounting bracket 1 to the other side and re-engage the locking block 306 with the other slot 307, exposing the switch part of the circuit breaker for easy operation.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An environmentally friendly interlocking device for medium-voltage ring main units, comprising a mounting frame (1), characterized in that: The mounting bracket (1) has a locking structure (2) on its side. The locking structure (2) includes a locking block (201). The locking block (201) is slidably connected to the side of the mounting bracket (1). The side of the locking block (201) has an inclined sliding groove (202). The inner side of the mounting bracket (1) is slidably connected to a driving slide rod (206). The inner side of the driving slide rod (206) is fixedly connected to a sliding column (209). The sliding column (209) is slidably connected to the locking block (201) through the inclined sliding groove (202). The end of the mounting bracket (1) has a positioning structure (3). The positioning structure (3) includes a first guide rod (301) and a second guide rod (302). The two ends of the mounting bracket (1) are slidably connected to the first guide rod (301) and the second guide rod (302), respectively.

2. The interlocking device for an environmentally friendly medium-voltage ring main unit according to claim 1, characterized in that: A second spring (208) is fixedly connected between the end of the drive slide rod (206) and the mounting bracket (1), and one side of the inclined slide groove (202) is parallel to the locking block (201).

3. The interlocking device for an environmentally friendly medium-voltage ring main unit according to claim 1, characterized in that: The mounting bracket (1) is rotatably connected to a gear (205), and the end of the drive slide rod (206) is provided with a tooth groove (204). The gear (205) meshes with the drive slide rod (206) through the tooth groove (204).

4. The interlocking device for an environmentally friendly medium-voltage ring main unit according to claim 3, characterized in that: The mounting bracket (1) has a sliding contact rod (203) slidably connected to its end, and the sliding contact rod (203) is perpendicular to the driving rod (206).

5. The interlocking device for an environmentally friendly medium-voltage ring main unit according to claim 4, characterized in that: The side of the abutting slide (203) meshes with the gear (205), and a first spring (207) is fixedly connected between the end of the abutting slide (203) and the mounting bracket (1).

6. The interlocking device for an environmentally friendly medium-voltage ring main unit according to claim 4, characterized in that: An inclined block (304) is slidably connected to the inner side of the mounting bracket (1). A third spring (305) is fixedly connected between the inclined block (304) and the mounting bracket (1). The end of the inclined block (304) is an inclined structure, and the inclined end of the inclined block (304) is located on the bottom side of the sliding rod (203).

7. The interlocking device for an environmentally friendly medium-voltage ring main unit according to claim 6, characterized in that: The second guide rod (302) has multiple slots (307) on its side, and the inclined block (304) has a locking block (306) fixedly connected to its side. The locking block (306) engages with the second guide rod (302) through the slots (307).

8. The interlocking device for an environmentally friendly medium-voltage ring main unit according to claim 1, characterized in that: The first guide rod (301) has multiple positioning holes (303) on its side. The mounting bracket (1) is slidably connected to a positioning rod (308). The end of the positioning rod (308) is engaged with the first guide rod (301) through the positioning holes (303).

9. The interlocking device for an environmentally friendly medium-voltage ring main unit according to claim 8, characterized in that: A fourth spring (309) is fixedly connected between the positioning rod (308) and the mounting bracket (1), and the end of the positioning rod (308) is a hemispherical structure.

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