CN213905179U

CN213905179U - Ring main unit interlocking device

Info

Publication number: CN213905179U
Application number: CN202022872194.8U
Authority: CN
Inventors: 杨步荣; 王营利
Original assignee: Zhejiang Desch Electric Service Co ltd
Current assignee: Zhejiang Desch Electric Service Co ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-08-06
Anticipated expiration: 2030-12-04

Abstract

The utility model discloses an interlocking device of looped netowrk cabinet relates to looped netowrk cabinet technical field, when maintaining to general looped netowrk cabinet, because the switch order of earth connection switch, plug-in strip and chamber door is not right, can bring life danger's problem, the following scheme is proposed now, which comprises a substrate, the positive bottom left side fixedly connected with fixed plate of base plate, the positive fixedly connected with push rod motor of fixed plate, the output shaft right side fixedly connected with extension shaft of push rod motor, extension shaft sliding connection has two push pedals, the bottom sliding connection of extension shaft has first limiting plate, the back of first limiting plate and the positive fixed connection of base plate, the positive fixedly connected with second limiting plate of base plate. The utility model discloses, the modern design, easy operation not only can directly open a plurality of switches automatically, directly opens according to designing the correct order moreover, can reduce maintenance person like this because of the order of opening not right, and bring the emergence of dangerous accident.

Description

Ring main unit interlocking device

Technical Field

The utility model relates to a looped netowrk cabinet technical field especially relates to a looped netowrk cabinet interlocking device.

Background

The ring main unit is a group of electric equipment for transmission and distribution, which is installed in a metal or non-metal insulating cabinet or made into an assembled interval ring main unit, the core part of the ring main unit adopts a load switch and a fuse, the ring main unit has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like, and the ring main unit is widely used in distribution stations and box-type substations of load centers such as urban residential districts, high-rise buildings, large public buildings, factory enterprises and the like, and a user can obtain power supplies from two directions to improve power supply reliability, and the power supply network is generally connected into a ring. This power supply mode is referred to as ring network power supply for short. In an alternating current 10kV power distribution system of industrial and mining enterprises, residential districts, ports, high-rise buildings and the like, a high-voltage loop is usually controlled by a load switch or a vacuum contactor and is provided with a high-voltage fuse for protection because the load capacity is not large. The system generally adopts a ring network for power supply, the used high-voltage switch cabinet is generally known as a ring main unit, the ring main unit supplies power to the power distribution station, and a high-voltage bus of the ring main unit also needs to pass through current of the ring power supply network, namely current for supplying power to an adjacent power distribution station through the bus of the power distribution station, so that the section of the high-voltage bus of the ring main unit is selected according to the sum of load current of the power distribution station and ring network through current to ensure that the high-voltage bus in operation does not run under no load, and the ring main unit has a plurality of product types, such as HK-10, MKH-10, 8DH-10, XGN-15, SM6 and FOX-HD series.

The ring main unit generally has a certain sequence of opening or closing switches during maintenance, and the interlocking device ensures the sequence of the switches to reduce the risk during maintenance, and the prior patent publication CN202434373U proposes "a ring main unit mechanical interlocking", which is only an interlocking for one of the switches and cannot directly and correctly set the switching sequence of a ground wire switch, a knife switch and a box door to reduce the occurrence of maintenance accidents, thereby providing an interlocking device for the ring main unit.

SUMMERY OF THE UTILITY MODEL

The utility model provides a looped netowrk cabinet interlocking device when having solved general looped netowrk cabinet maintenance, because the switch order of earth connection switch, plug-in strip and chamber door is not right, may bring life dangerous problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an interlocking device of a ring main unit comprises a base plate, wherein a fixed plate is fixedly connected to the left side of the bottom of the front surface of the base plate, a push rod motor is fixedly connected to the front surface of the fixed plate, an extension shaft is fixedly connected to the right side of an output shaft of the push rod motor, two push plates are fixedly connected to the top of the extension shaft, a first limiting plate is slidably connected to the bottom of the extension shaft, the back surface of the first limiting plate is fixedly connected to the front surface of the base plate, a second limiting plate is fixedly connected to the front surface of the base plate, a transverse plate is movably sleeved inside the second limiting plate, a push rod is hinged to the front surface of the transverse plate, two vertical plates are fixedly connected to the two ends of the bottom of the transverse plate, the bottom of the push rod is hinged to the front surface of the extension shaft, a support rod is fixedly connected to the top of the transverse plate, a limit sleeve is movably sleeved outside the support rod, and a reverse T-shaped plate is fixedly connected to the top of the support rod, the utility model discloses a novel switch board, including the board that falls T, the positive two L shaped plates of fixedly connected with of base plate, the outside movable sleeve of the board that falls T is equipped with first switch board, the left side below of first switch board is equipped with the second switch board, the positive rotation of base plate is connected with two third switch boards, the top of first switch board is equipped with the board that resets, the inside movable sleeve of the board that resets is equipped with the round bar, the outside movable sleeve of round bar is equipped with first spring, the top fixedly connected with anticreep piece of round bar, the top of first spring is fixed even with the bottom of the board that resets, the bottom activity of round bar is inlayed and is had the ball.

Preferably, the bottom of the lengthened shaft is provided with a sliding groove, the top of the first limiting plate is provided with a sliding rail, and the sliding rail slides in the first sliding groove.

Preferably, two rectangular holes are formed in the top of the second limiting plate, and the two rectangular holes are movably sleeved outside the vertical plate.

Preferably, the front surface of the substrate is fixedly connected with two rectangular columns, the left sides of the rectangular columns are fixedly connected with second springs, and the left sides of the second springs are fixedly connected with the right side of the third switch board.

Preferably, the third switch board all cooperates the braking with the L shaped plate, first switch board cooperates the braking with the second switch board, two little round bars of positive fixedly connected with of base plate, little round hole has all been seted up in the front of third switch board, the equal movable sleeve of little round bar is established in the outside of little round bar.

Preferably, two the third switch board is established in the top of lengthening the axle, the L shaped plate all is established in the upper right side of third switch board, the second limiting plate is established directly over two L shaped plates, is located the left side the riser is shorter than the right side riser.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an installation push rod motor, the extension shaft, the push pedal, the board of falling T, cardboard isotructure, wherein the push rod motor drives push rod cooperation diaphragm through the extension shaft, can play and open the second switch board, and the riser can play and must open left side third switch board earlier, just can open the effect of the board of right side third switch, this modern design, and easy operation, not only can directly open a plurality of switches automatically, and directly open according to designing the correct order, can reduce the maintenance person like this and be not right because of the order of opening, and the emergence of the dangerous accident of bringing.

Drawings

Fig. 1 is a schematic view of a front view cross-sectional structure of an interlocking device of a ring main unit according to the present invention;

fig. 2 is a schematic front view of the interlocking device of the ring main unit according to the present invention;

fig. 3 is a schematic view of the working state structure of the ring main unit interlocking device provided by the present invention;

fig. 4 is a schematic top view of a partial structure of the ring main unit interlocking device according to the present invention;

fig. 5 is a schematic top view of a partial structure of the ring main unit interlocking device according to the present invention.

In the figure: the automatic lifting device comprises a base plate 1, a push rod motor 2, a fixing plate 3, a push rod 4, an extension shaft 5, a push plate 6, a clamping plate 7, a first limiting plate 8, a rectangular column 9, a third switching plate 10, an L-shaped plate 11, a vertical plate 12, a second limiting plate 13, a supporting rod 14, a reverse T-shaped plate 15, a round rod 16, a reset plate 17, a first switching plate 18, a second switching plate 19 and a limiting sleeve 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-5, an example provided by the present solution: a ring main unit interlocking device comprises a base plate 1, a fixed plate 3 is fixedly connected to the left side of the bottom of the front face of the base plate 1, a push rod motor 2 is fixedly connected to the front face of the fixed plate 3, an extension shaft 5 is fixedly connected to the right side of an output shaft of the push rod motor 2, two push plates 6 are fixedly connected to the top of the extension shaft 5, a first limiting plate 8 is slidably connected to the bottom of the extension shaft 5, the back face of the first limiting plate 8 is fixedly connected to the front face of the base plate 1, a second limiting plate 13 is fixedly connected to the front face of the base plate 1, a transverse plate is movably sleeved inside the second limiting plate 13, a push rod 4 is hinged to the front face of the transverse plate, two vertical plates 12 are fixedly connected to the two ends of the bottom of the transverse plate, the bottom of the push rod 4 is hinged to the front face of the extension shaft 5, a support rod 14 is fixedly connected to the top of the transverse plate, a limit sleeve 20 is movably sleeved outside the support rod 14, a reverse T plate 15 is fixedly connected to the top of the support rod 14, top fixedly connected with cardboard 7 of board 15 of falling T, two L shaped plates 11 of positive fixedly connected with of base plate 1, the outside activity cover of board 15 of falling T is equipped with first switch board 18, the left side below of first switch board 18 is equipped with second switch board 19, the positive rotation of base plate 1 is connected with two third switch boards 10, the top of first switch board 18 is equipped with reset plate 17, the inside activity cover of reset plate 17 is equipped with round bar 16, the outside activity cover of round bar 16 is equipped with first spring, the top fixedly connected with anticreep piece of round bar 16, the top of first spring is fixed even with the bottom of reset plate 17, the bottom activity of round bar 16 is inlayed and is had the ball.

In this embodiment, the spout has been seted up to the bottom of extension axle 5, and the slide rail has been seted up at the top of first limiting plate 8, and the slide rail slides in first spout.

In this embodiment, two rectangular holes have been seted up at the top of second limiting plate 13, and two rectangular hole activity covers are established in the outside of riser 12.

In this embodiment, two rectangular columns 9 are fixedly connected to the front surface of the substrate 1, the left sides of the rectangular columns 9 are fixedly connected with second springs, and the left sides of the second springs are fixedly connected with the right side of the third switch board 10.

In this embodiment, the third switch board 10 is matched with the L-shaped board 11 for braking, the first switch board 18 is matched with the second switch board 19 for braking, the front surface of the substrate 1 is fixedly connected with two small round rods, the front surface of the third switch board 10 is provided with small round holes, and the small round holes are movably sleeved outside the small round rods.

In this embodiment, two third switch boards 10 are disposed above the extension shaft 5, the L-shaped boards 11 are disposed on the upper right of the third switch boards 10, and the second limiting board 13 is disposed directly above the two L-shaped boards 11 and located at the left side vertical board 12 shorter than the right side vertical board 12.

The working principle is that firstly, the output shaft of the push rod motor 2 moves rightwards, and then drives the extension shaft 5 to move rightwards, and then drives the bottom of the push rod 4 to move rightwards, the push rod 4 then pushes the transverse plate to move upwards, and then drives the two vertical plates 12 to move upwards, and simultaneously drives the support rod 14 to move upwards, the support rod 14 moves upwards and then drives the inverted T-shaped plate 15 to move upwards, and then drives the left side of the first switch plate 18 to move upwards, the first switch plate 18 pushes the round rod 16 to move upwards, and further drives the anti-falling block to move upwards together, and presses the first spring, so that the first switch plate 18 and the second switch plate 19 are separated, if the output shaft of the push rod motor 2 continues to extend, and continues to drive the extension shaft 5 to move rightwards, at the moment, the push rod 4 continues to indirectly push the first switch plate 18 to move upwards, and simultaneously enables the two vertical plates 12 to move upwards, because the left side riser 12 is shorter than the right side riser 12, the left side third switch board 10 can rotate freely firstly, at the moment, the lengthened shaft 5 can move rightwards continuously and push the push plate 6 to move rightwards, the left side push plate 6 touches the left side third switch board 10 firstly and drives the left side third switch board 10 to rotate anticlockwise, the lengthened shaft moves rightwards subsequently and can continuously enable the two risers 12 to move upwards through the male push rod, the right side riser 10 can not contact with the right side third switch board 10 at the moment, then the right side push plate 6 can push the right side third switch board 10 to rotate anticlockwise and disconnect the right side third switch board 10 from the right side L-shaped board 11.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The ring main unit interlocking device is characterized by comprising a base plate (1), wherein a fixed plate (3) is fixedly connected to the left side of the front bottom of the base plate (1), a push rod motor (2) is fixedly connected to the front side of the fixed plate (3), an extension shaft (5) is fixedly connected to the right side of an output shaft of the push rod motor (2), two push plates (6) are fixedly connected to the top of the extension shaft (5), a first limiting plate (8) is slidably connected to the bottom of the extension shaft (5), the back of the first limiting plate (8) is fixedly connected to the front of the base plate (1), a second limiting plate (13) is fixedly connected to the front of the base plate (1), a transverse plate sleeve is movably arranged inside the second limiting plate (13), a push rod (4) is hinged to the front of the transverse plate, and two vertical plates (12) are fixedly connected to the two ends of the bottom of the transverse plate, the bottom of push rod (4) is articulated with the front of lengthened shaft (5), the top fixedly connected with bracing piece (14) of diaphragm, the outside activity cover of bracing piece (14) is equipped with stop collar (20), the top fixedly connected with board of falling T (15) of bracing piece (14), the top fixedly connected with cardboard (7) of board of falling T (15), the front fixedly connected with two L shaped plates (11) of base plate (1), the outside activity cover of board of falling T (15) is equipped with first switch board (18), the left side below of first switch board (18) is equipped with second switch board (19), the front of base plate (1) is rotated and is connected with two third switch boards (10), the top of first switch board (18) is equipped with reset plate (17), the inside activity cover of reset plate (17) is equipped with round bar (16), the outside activity cover of round bar (16) is equipped with first spring, the top fixedly connected with anticreep piece of round bar (16), the top of first spring is fixed even with the bottom of restoring to the throne board (17), the bottom activity of round bar (16) is inlayed and is had the ball.

2. The ring main unit interlocking device as claimed in claim 1, wherein the bottom of the elongated shaft (5) is provided with a sliding slot, and the top of the first limiting plate (8) is provided with a sliding rail, and the sliding rail slides in the first sliding slot.

3. The ring main unit interlocking device according to claim 1, wherein two rectangular holes are formed at the top of the second limiting plate (13), and the two rectangular holes are movably sleeved on the outer portions of the vertical plates (12).

4. The ring main unit interlocking device as claimed in claim 1, wherein two rectangular columns (9) are fixedly connected to the front surface of the base plate (1), a second spring is fixedly connected to each of the left sides of the rectangular columns (9), and each of the left sides of the second spring is fixedly connected to the right side of the third switch plate (10).

5. The ring main unit interlocking device according to claim 1, wherein the third switch board (10) is engaged with the L-shaped board (11) for braking, the first switch board (18) is engaged with the second switch board (19) for braking, the front surface of the base board (1) is fixedly connected with two small round bars, the front surface of the third switch board (10) is provided with small round holes, and the small round holes are movably sleeved outside the small round bars.

6. The ring main unit interlocking device according to claim 1, wherein two third switch boards (10) are disposed above the extension shaft (5), the L-shaped boards (11) are disposed at the upper right of the third switch boards (10), the second limit board (13) is disposed directly above the two L-shaped boards (11), and is located at the left side where the vertical board (12) is shorter than the vertical board (12) at the right side.