CN210897046U

CN210897046U - Switch sequential operation interlocking mechanism

Info

Publication number: CN210897046U
Application number: CN201922488420.XU
Authority: CN
Inventors: 刘振良
Original assignee: Hotoli Guangdong Electric Co ltd
Current assignee: Hotoli Guangdong Electric Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-06-30
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a switch sequence operation interlocking device belongs to high-voltage electrical technical field, including setting up the circuit breaker combined floodgate button on switch cabinet, the mounting panel, the earthing switch operating axis, circuit breaker main shaft and isolator operating axis, be equipped with first baffle and second baffle on the mounting panel, be equipped with the earthing switch turning arm on the earthing switch operating axis, be equipped with the circuit breaker turning arm on the circuit breaker main shaft, be equipped with the isolator turning arm on the isolator operating axis, still be equipped with the swing arm on the mounting panel, the one end of swing arm is connected with the interlocking board that is used for unblock circuit breaker combined floodgate button, be equipped with the spacer pin that acts on the swing arm other end on the first baffle, first baffle is equipped with the shielding part that shelters from the earthing switch operating axis, the second baffle is equipped with. The interlocking mechanism has the advantages of simple structure, reliable connection, convenient installation and maintenance, convenient inspection, low manufacturing cost, no maintenance and convenient popularization and implementation.

Description

Switch sequential operation interlocking mechanism

Technical Field

The utility model belongs to the technical field of high-voltage electrical, concretely relates to switch sequential operation interlocking device.

Background

At present, a high-voltage switch cabinet is usually matched with a circuit breaker, a disconnecting switch and an earthing switch for use, and in order to guarantee safety, some interlocking functions must be provided among internal elements of the switch cabinet and between the elements and the switch cabinet. Therefore, the switching-on sequence of the high-voltage switch is ensured to be the sequence of firstly switching off the grounding switch, switching on the isolating switch and switching on the circuit breaker, and the current scheme for realizing the function is complex, difficult to realize and unreliable.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a simple structure, simple to operate, dependable performance, the switch sequential operation interlocking device that the cost of manufacture is low, through the part motion each other, cover or expose the operating axis and realize the cubical switchboard sequential operation interlocking.

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

the utility model provides a switch sequential operation interlocking mechanism, which comprises a breaker closing button arranged on a switch cabinet, a mounting plate, and a grounding switch operating shaft, a breaker main shaft and an isolating switch operating shaft which are sequentially arranged from bottom to top, wherein the mounting plate is provided with a first baffle and a second baffle which are in sliding connection with the upper part and the lower part, the grounding switch operating shaft is provided with a grounding switch crank acting on the second baffle, the breaker main shaft is provided with a breaker crank acting on the second baffle, the isolating switch operating shaft is provided with an isolating switch crank acting on the first baffle, the mounting plate is also provided with a swing arm which is in rotating connection with the mounting plate, one end of the swing arm is connected with an interlocking plate for unlocking the breaker closing button, the first baffle is provided with a limit pin acting on the other end of the swing arm, one side of the first baffle close to the grounding switch operating shaft is provided with a shielding part for shielding the grounding switch operating, and a shielding part for shielding the isolating switch operating shaft is arranged on one side of the second baffle plate close to the isolating switch operating shaft.

Further, the central axes of the earthing switch operating shaft, the breaker main shaft and the isolating switch operating shaft are on the same vertical line.

Further, the mounting panel is with first baffle and second baffle sliding connection's structure about respectively is: the mounting plate is provided with a guide pin, and the first baffle plate and the second baffle plate are provided with long holes matched with the guide pin.

Further, the structure that the mounting panel and swing arm rotate to be connected does: the mounting plate is hinged with the swing arm through a pin shaft.

Furthermore, the mounting plate is provided with a lower arc groove matched with the rotation of the crank arm of the grounding switch at one side close to the operating shaft of the grounding switch and an upper arc groove matched with the rotation of the crank arm of the isolating switch at one side close to the operating shaft of the isolating switch.

Furthermore, the first baffle and the second baffle are arranged on the same side relative to the mounting plate, and are arranged on the opposite side of the swing arm relative to the mounting plate.

Furthermore, a limiting pin arranged on the first baffle penetrates through the mounting plate to act on the swing arm, and a strip-shaped hole for the limiting pin to move in a abdicating mode is formed in the mounting plate.

The utility model has the advantages that: the utility model discloses an effectual combined floodgate or the separating brake order of having guaranteed the interior component of cubical switchboard of switch sequence operation interlocking device, the effectual operation safety of having guaranteed the switch, and simple structure, the preparation is convenient, has practiced thrift manufacturing cost.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic front structural view of the switch sequential operation interlocking mechanism of the present invention;

fig. 2 is a schematic perspective view of the switch sequential operation interlocking mechanism of the present invention;

reference numerals: the grounding switch comprises a grounding switch crank arm 1, a grounding switch operating shaft 2, a breaker crank arm 3, a breaker main shaft 4, a swing arm 5, an interlocking plate 6, a breaker closing button 7, a second baffle plate 8, an installation plate 9, an isolating switch operating shaft 10, an isolating switch crank arm 11, a first baffle plate 12, a guide pin 13, a switch cabinet 14 and a limiting pin 15.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

As shown in fig. 1-2, the switch sequential operation interlocking mechanism in this embodiment includes a switch cabinet 14, on which a breaker closing button 7, a mounting plate 9, and an earthing switch operating shaft 2, a breaker main shaft 4, and an isolating switch operating shaft 10 are disposed in sequence from bottom to top, and central axes of the earthing switch operating shaft, the breaker main shaft, and the isolating switch operating shaft are on the same vertical line, which is beneficial for compact structure and convenient operation; install on the mounting panel 9 with first baffle 12 and the second baffle 8 of sliding connection from top to bottom, this upper and lower sliding connection structure is: a guide pin is arranged on the mounting plate, and long holes (drawn in the figure and not marked) matched with the guide pin are arranged on the first baffle plate and the second baffle plate; the earthing switch operating shaft 2 is provided with an earthing switch crank arm 1 acting on the second baffle 8, the breaker main shaft 4 is provided with a breaker crank arm 3 acting on the second baffle 8, the isolating switch operating shaft 10 is provided with an isolating switch crank arm 11 acting on the first baffle 12, namely, the mounting plate is provided with a lower arc groove (drawn in the figure and not marked) matched with the earthing switch crank arm to rotate at one side close to the earthing switch operating shaft and an upper arc groove (drawn in the figure and not marked) matched with the isolating switch crank arm to rotate at one side close to the isolating switch operating shaft; still be equipped with on the mounting panel 9 with it and rotate the swing arm 5 of being connected, should rotate the structure of connecting and be: the mounting plate is hinged with the swing arm through a pin shaft (not marked) and is drawn in the figure; one end of the swing arm 5 is connected with an interlocking plate 6 for unlocking a circuit breaker closing button 7, a limiting pin 15 acting on the other end of the swing arm 5 is arranged on the first baffle 12, and the first baffle can pry the swing arm in the falling process by utilizing the limiting pin and a pin shaft, so that the interlocking plate is driven to move to unlock the circuit breaker closing button; the first shutter 12 is provided with a shielding portion (not shown) that shields the earthing switch operating shaft 2 on the side close to the earthing switch operating shaft 2, and the second shutter 8 is provided with a shielding portion (not shown) that shields the disconnecting switch operating shaft 10 on the side close to the disconnecting switch operating shaft 10.

Specifically, the circuit breaker main shaft, the disconnecting switch operating shaft and the grounding switch operating shaft are respectively provided with an interlocking crank arm which rotates along with the rotation of the corresponding shaft, the switch cabinet is provided with an installation plate and a fixed guide pin, and the first baffle plate and the second baffle plate can slide up and down along the guide pin; the switching-on sequence of the high-voltage switch comprises the steps of firstly switching on the grounding switch, switching on the isolating switch and switching on the circuit breaker; the switching-off sequence is vice versa; the following specifically explains the closing flow of the interlocking mechanism:

step one, a tapping ground switch: the grounding switch operating shaft rotates anticlockwise, the grounding switch crank arm moves away, and the second baffle slides downwards under the action of gravity, so that an operating hole of the isolating switch operating shaft is displayed, and the isolating switch can operate;

secondly, closing the isolating switch: the isolating switch operating shaft rotates clockwise to drive the isolating switch crank arm to rotate, the first baffle is pressed down, the first baffle slides downwards to drive the limiting pin to drive the swing arm to rotate, so that the interlocking plate is driven to move upwards, the closing button of the circuit breaker is unlocked, the circuit breaker can normally open and close at the moment, meanwhile, the lower part of the first baffle blocks the operating hole of the grounding switch operating shaft, and the grounding switch cannot be operated at the moment;

thirdly, closing the circuit breaker: the breaker connecting lever is closed a floodgate and drives the second baffle and upwards slide, blocks the handle hole of isolator operating axis, can not operate isolator this moment, only can operate isolator when the breaker separating brake. The method can be realized as follows: the disconnecting switch can be operated only when the breaker is opened, and the grounding switch can be operated only when the disconnecting switch is opened, so that the sequential operation of the switches is realized.

In the embodiment, the first baffle plate 12 and the second baffle plate 8 are arranged on the same side relative to the mounting plate 9, and are arranged on the opposite side of the swing arm 5 relative to the mounting plate 9, so that the working movement of the first baffle plate and the swing arm is reliable; the limiting pin 15 arranged on the first baffle 12 penetrates through the mounting plate 9 to act on the swing arm 5, and a strip-shaped hole (not shown) for the limiting pin 15 to move is formed in the mounting plate 9.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. The switch sequential operation interlocking mechanism is characterized by comprising a breaker closing button (7), a mounting plate (9), a grounding switch operating shaft (2), a breaker main shaft (4) and an isolating switch operating shaft (10), wherein the breaker closing button (7), the mounting plate (9) and the grounding switch operating shaft (2), the breaker main shaft (4) and the isolating switch operating shaft (10) are arranged on a switch cabinet (14) in sequence from bottom to top, the mounting plate is provided with a first baffle (12) and a second baffle (8) which are connected in a sliding mode from top to bottom, the grounding switch operating shaft is provided with a grounding switch connecting lever (1) which acts on the second baffle, the breaker main shaft is provided with a breaker connecting lever (3) which acts on the second baffle, the isolating switch operating shaft is provided with an isolating switch connecting lever (11) which acts on the first baffle, the mounting plate is further provided with a swing arm, the first baffle is provided with a limiting pin (15) acting on the other end of the swing arm, one side of the first baffle close to the earthing switch operating shaft is provided with a shielding part for shielding the earthing switch operating shaft, and one side of the second baffle close to the isolating switch operating shaft is provided with a shielding part for shielding the isolating switch operating shaft.

2. The switch sequential operation interlock mechanism according to claim 1, wherein central axes of the earthing switch operating shaft, the breaker main shaft and the disconnecting switch operating shaft are on the same vertical line.

3. A switch sequential operation interlock mechanism according to claim 1, wherein the mounting plate is slidably connected to the first shutter and the second shutter up and down, respectively, by: a guide pin (13) is provided on the mounting plate, and long holes that are fitted with the guide pin are provided on the first baffle plate and the second baffle plate.

4. A switch sequential operation interlock mechanism according to claim 1, wherein the mounting plate is pivotally connected to the swing arm by: the mounting plate is hinged with the swing arm through a pin shaft.

5. A switch sequence operation interlock as claimed in claim 1, wherein the mounting plate is provided with a lower arc groove adjacent to the earthing switch operating shaft for matching rotation of the earthing switch crank arm, and an upper arc groove adjacent to the disconnecting switch operating shaft for matching rotation of the disconnecting switch crank arm.

6. The switch sequential operation interlock mechanism according to claim 1, wherein the first shutter and the second shutter are disposed on a same side with respect to the mounting plate and are disposed on a different side of the swing arm with respect to the mounting plate.

7. A switch sequential operation interlocking mechanism according to claim 6, wherein a limit pin provided on the first shutter passes through the mounting plate to act on the swing arm, and a strip-shaped hole for allowing the limit pin to move is provided on the mounting plate.