CN211957495U - Electric interlocking mechanism of three-station mechanism - Google Patents

Abstract

The utility model discloses an electric interlocking device of three station mechanisms, including key axle, rotary valve, frame, position conversion board, drive plate and shutting subassembly, the shutting subassembly includes spacing axle, jam plate, shutting coil and shutting mounting panel, and the position conversion board is installed in the front side of frame, and rotary valve rotates and installs in the front side of position conversion board, and spacing axle rotates and installs on the frame, and the key axle rigid coupling is in the front end of spacing axle; the driving plate is fixedly connected to the key shaft, the rotary valve is provided with a sliding chute, a first sliding pin of the driving plate is arranged in the sliding chute in a penetrating manner, the position conversion plate is provided with a clearance groove, and a second sliding pin of the driving plate is arranged in the clearance groove in a penetrating manner; the locking coil is arranged on the frame, the locking plate is fixedly connected to the limiting shaft, and the iron core of the locking coil penetrates through the locking hole of the locking plate. The utility model discloses realize three station mechanisms and aerify the electric interlocking function between the side of being qualified for the next round of competitions of cabinet circuit breaker, can prevent the three station mechanisms of manual operation under the electrified condition of the side of being qualified for the next round of competitions of aerifing the cabinet circuit breaker.

Description

Electric interlocking mechanism of three-station mechanism

Technical Field

The utility model belongs to the technical field of three station isolation earthing switch technique and specifically relates to an electric interlocking device of three station mechanisms is related to.

Background

A cabinet type Gas Insulated metal enclosed Switchgear (C-GIS) is a primary distribution system device which takes a breaker as a main switch and is used for 10-35 kV or higher voltage level. The inflatable ring main unit uses a load switch as a main switch and is also provided with a scheme of a circuit breaker, and the inflatable ring main unit is used for a 10-35 kV secondary power distribution system. The inflatable cabinet is generally a general name of the C-GIS and the inflatable ring main unit.

The gas-filled cabinet utilizes the GIS insulation technology and the sealing technology to install high-voltage elements in a box-type sealed container, fills insulating gas slightly higher than atmospheric pressure, utilizes modern advanced processing technology to manufacture a set of serialized products, and has the functions of controlling, protecting, measuring, monitoring and communicating electric energy distribution under the normal and fault conditions of the system.

At present, the development of the gas-filled cabinet presents a trend of component combination, the disconnecting switch and the grounding switch of some gas-filled cabinet products are combined into a three-station disconnecting grounding switch, the three-station disconnecting grounding switch can be operated through a three-station mechanism, however, under the condition that the outlet side of the gas-filled cabinet breaker is electrified, the three-station mechanism is not allowed to be manually operated, for example, an electrified display of the gas-filled cabinet is connected at the outlet end of the gas-filled cabinet breaker, when the gas-filled cabinet breaker normally works, the breaker is switched on, the high-voltage side of the electrified display is electrified, at the moment, the three-station mechanism is not allowed to be manually operated, if the three-station mechanism is operated by mistake, the explosion of the gas-filled cabinet can be caused, and therefore, an electric mechanism for preventing the three-station mechanism from being manually operated under the condition that the outlet side of the gas-filled.

In addition, when the three-station mechanism is manually operated, the electric operation of the background is not allowed, and if the three-station mechanism is electrically operated by mistake, the manual operation personnel can be injured.

Disclosure of Invention

In order to overcome the defects, the utility model provides an electric interlocking device of three station mechanisms has realized the three station mechanisms of aerifing the cabinet and has aerifyd the electrical interlocking function between the side of being qualified for the next round of competitions of cabinet circuit breaker, can prevent the three station mechanisms of manual operation under the electrified condition of the side of being qualified for the next round of competitions of aerifing the cabinet circuit breaker.

The utility model discloses a solve the technical scheme that its technical problem adopted and be:

an electric interlocking mechanism of a three-station mechanism comprises a key shaft, a rotary valve, a frame, a position conversion plate, a drive plate and a locking assembly, wherein the locking assembly comprises a limiting shaft, a locking plate, a locking coil and a locking mounting plate; the driving plate is arranged between the rotary valve and the front side of the position conversion plate, the bottom end of the driving plate is fixedly connected to the key shaft, a first sliding pin is formed at the position, close to the top end, of the front side of the driving plate, a second sliding pin is formed at the position, close to the key shaft, of the rear side of the driving plate, a sliding groove extending along the central line is formed at the position, close to the pin shaft, of the central line of the rotary valve, the first sliding pin penetrates through the sliding groove, a clearance groove is formed at the position, close to the key shaft, of the position conversion plate, and the second sliding pin penetrates through the clearance groove; the locking mounting plate is mounted at the bottom of the frame, the locking coil is mounted on the locking mounting plate, the locking plate is fixedly connected to the limiting shaft, a locking hole is formed in the locking plate, and an iron core of the locking coil penetrates through the locking hole; the circuit of the locking coil is connected with a contact of an electrified display in series, and the electrified display is connected with the wire outlet end of the gas-filled cabinet breaker.

As a further improvement, the jam plate includes vertical board and horizontal plate, one side of horizontal plate forms the protruding end, the protruding end passes through the fastener lock solid and arrives spacing epaxial, the lockhole sets up on the vertical board, the iron core level sets up and wears to locate in the lockhole.

As a further improvement, the utility model discloses a still include operating panel, keep apart operating axis and ground connection operating axis, the left and right sides and the upper and lower both sides of position conversion board are formed with first bending plate, the position conversion board passes through first bending plate install in the front side of frame, operating panel's the left and right sides is formed with the second bending plate, operating panel passes through the second bending plate install in the front side of position conversion board, rotary valve reaches the drive plate is located operating panel with between the position conversion board, keep apart the operating axis and the ground connection operating axis rotate install in on the frame, operating panel is last be formed with keep apart the operating hole that the operating axis corresponds, with the ground connection operating hole that the ground connection operating axis corresponds and with the key handle hole that the key shaft corresponds.

As a further improvement of the utility model, the utility model also comprises an electric operation interlocking component, the electric operation interlocking component comprises a limiting pin, a support plate, a spring leaf and a microswitch, the limiting pin is horizontally arranged on the limiting shaft, the support plate comprises a plate body, connecting lug pieces formed by bending the two sides of the plate body upwards, transmission lug pieces formed by bending the two sides of the plate body downwards, a guide piece formed by bending one end of the plate body downwards and a connecting tail piece formed by bending the other end of the plate body downwards, a guide clamping opening is formed in the middle of the guide piece, the microswitch is arranged at the bottom of the frame through a third bending plate, the microswitch is positioned above the limiting shaft, the support plate is arranged between the microswitch and the limiting shaft, the two connecting lug pieces of the support plate are rotatably arranged at the left side and the right side of the microswitch through a rotating shaft, and the transmission lug is abutted against the upper side of the limiting pin, the limiting shaft is accommodated in the guide clamping opening, one end of the spring piece is fixedly connected with the connecting tail piece, the other end of the spring piece is abutted against a contact of the microswitch in an obliquely upward state, and the microswitch is connected into an electric operation loop of the three-station mechanism.

The utility model has the advantages that: the utility model provides an electric interlocking device of three station mechanisms, through the epaxial spacing axle of connection of key at three station mechanisms, at spacing epaxial installation jam plate, and at three station mechanisms's frame mounting blocking coil, the contact of an electrified display of series connection in blocking coil's return circuit, connect electrified display at the leading-out terminal of inflating the cabinet circuit breaker, the electric interlocking function between the three station mechanisms of inflating the cabinet and the side of being qualified for the next round of competitions of inflating the cabinet circuit breaker has been realized, can prevent manual operation three station mechanisms under the condition of the side of being qualified for the next round of competitions of inflating the cabinet circuit breaker. When the outlet side of the gas-filled cabinet circuit breaker is electrified and normally works, the circuit breaker is switched on, the high-voltage side of the electrified display is electrified, the contact is in an off state, the locking coil loop is switched off, and the iron core of the locking coil is locked into the lock hole of the lock plate, namely the locking coil is not attracted. The lock plate is fixedly connected with the limiting shaft, and the limiting shaft is fixedly connected with the key shaft, so that the key shaft is locked and cannot rotate, the key shaft cannot be operated through a key, namely, the rotary valve of the three-station mechanism is locked, the rotary valve cannot rotate and cannot be opened, the rotary valve blocks the isolation operation shaft and the grounding operation shaft of the three-station isolation grounding switch, and the three-station mechanism cannot be manually operated. When the breaker is opened, when the high-voltage side of the electrified display is not electrified, the contact is closed, the loop of the locking coil is conducted, the locking coil attracts the iron core, the iron core withdraws from the lock hole of the lock plate, so that the lock plate and the limiting shaft are unlocked, at the moment, the limiting shaft and the key shaft can rotate, the key shaft can be operated through a key, the rotating valve is driven to rotate through the key shaft, the rotating valve of the three-station mechanism is unlocked, at the moment, the rotating valve can be opened, and the three-station mechanism is manually operated through the operating handle. Preferably, still be equipped with electrically operated interlocking subassembly, through the cooperation of electrically operated interlocking subassembly with spacing axle, can realize the manually operation of three station mechanisms and electrically operated's interlocking function.

Drawings

Fig. 1 is a perspective view of an electrical interlocking mechanism of the three-station mechanism of the present invention;

fig. 2 is a perspective view of another view angle of the electrical interlocking mechanism of the three-position mechanism of the present invention;

FIG. 3 is a perspective view of the front side viewing angle of the assembly of the rotary shutter, the drive plate and the position conversion plate of the present invention;

fig. 4 is a perspective view of the rear viewing angle of the assembly of the rotary shutter, the driving plate and the position conversion plate according to the present invention;

the following description is made with reference to the accompanying drawings:

10-key shaft, 20-rotary shutter, 21-sliding groove, 30-frame, 40-position converting plate, 41-clearance groove, 42-first bending plate, 50-driving plate, 51-first sliding pin, 52-second sliding pin, 60-locking component, 61-limiting shaft, 62-locking plate, 621-locking hole, 622-vertical plate, 623-horizontal plate, 624-convex end, 63-locking coil, 631-iron core, 64-locking mounting plate, 70-operating panel, 71-second bending plate, 72-isolating operating hole, 73-grounding operating hole, 74-key operating hole, 80-isolating operating shaft, 90-grounding operating shaft, 100-pin shaft, 110-electric operating interlocking component, 111-limiting pin, 112-support plate, 1121-plate body, 1122-connecting lug, 1123-driving lug, 1124-guide piece, 1125-connecting tail piece, 1126-guide clamp mouth, 113-spring piece, 114-microswitch, 1141-contact, 115-third bent plate.

Detailed Description

The following description of the preferred embodiments of the present invention will be made in conjunction with the accompanying drawings.

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the electric interlocking mechanism of a three-station mechanism according to the present invention includes a key shaft 10, a rotary valve 20, a frame 30, a position conversion plate 40, a driving plate 50 and a locking assembly 60, wherein the locking assembly includes a limiting shaft 61, a locking plate 62, a locking coil 63 and a locking mounting plate 64, the position conversion plate is mounted on the front side of the frame, the central line of the rotary valve is near the top and is rotatably mounted on the front side of the position conversion plate through a pin 100, the limiting shaft is rotatably mounted on the frame, the key shaft is fixedly connected to the front end of the limiting shaft, and the key shaft penetrates out from the front side of the position conversion plate and is located below the rotary valve; the driving plate is arranged between the rotary valve and the front side of the position conversion plate, the bottom end of the driving plate is fixedly connected to the key shaft, a first sliding pin 51 is formed at the position, close to the top end, of the front side of the driving plate, a second sliding pin 52 is formed at the position, close to the key shaft, of the rear side of the driving plate, a sliding groove 21 extending along the central line is formed at the position, close to the pin shaft, of the central line of the rotary valve, the first sliding pin penetrates through the sliding groove, a clearance groove 41 is formed at the position, close to the key shaft, of the position conversion plate, and the second sliding pin penetrates through the clearance groove; the shutting mounting panel install in the bottom of frame, the shutting coil install in on the shutting mounting panel, the locking plate rigid coupling in spacing epaxial, be formed with the lockhole 621 on the locking plate, the iron core 631 of shutting coil wears to locate in the lockhole.

In the structure, when the key shaft is operated by a key, the key shaft drives the drive plate to rotate, and the drive plate can further drive the rotary valve to rotate (anticlockwise or clockwise rotation), so that the rotary valve is positioned at three positions of only shielding the isolation operation shaft, only shielding the grounding operation shaft and simultaneously shielding the isolation operation shaft and the grounding operation shaft. The first sliding pin is matched with the sliding groove and used for applying driving force to the rotary valve, and the second sliding pin is matched with the clearance groove and plays a role in guiding and limiting the driving plate.

In the structure, the key shaft of the three-station mechanism is connected with the limiting shaft, the locking plate is arranged on the limiting shaft, the locking coil is arranged on the frame of the three-station mechanism, the contact of the electrified display is connected in series in the loop of the locking coil, and the electrified display is connected to the wire outlet end of the gas-filled cabinet circuit breaker, so that the electric interlocking function between the three-station mechanism of the gas-filled cabinet and the wire outlet side of the gas-filled cabinet circuit breaker is realized, and the three-station mechanism can be prevented from being manually operated under the condition that the wire outlet side of the gas-filled cabinet circuit breaker is electrified. When the outlet side of the gas-filled cabinet circuit breaker is electrified and normally works, the circuit breaker is switched on, the high-voltage side of the electrified display is electrified, the contact is in an off state, the locking coil loop is switched off, and the iron core of the locking coil is locked into the lock hole of the lock plate, namely the locking coil is not attracted. The lock plate is fixedly connected with the limiting shaft, and the limiting shaft is fixedly connected with the key shaft, so that the key shaft is locked and cannot rotate, the key shaft cannot be operated through a key, namely, the rotary valve of the three-station mechanism is locked, the rotary valve cannot rotate and cannot be opened, the rotary valve blocks the isolation operation shaft and the grounding operation shaft of the three-station isolation grounding switch, and the three-station mechanism cannot be manually operated. When the breaker is opened, when the high-voltage side of the electrified display is not electrified, the contact is closed, the loop of the locking coil is conducted, the locking coil attracts the iron core, the iron core withdraws from the lock hole of the lock plate, so that the lock plate and the limiting shaft are unlocked, at the moment, the limiting shaft and the key shaft can rotate, the key shaft can be operated through a key, the rotating valve is driven to rotate through the key shaft, the rotating valve of the three-station mechanism is unlocked, at the moment, the rotating valve can be opened, and the three-station mechanism is manually operated through the operating handle.

Preferably, referring to fig. 1 and 2, the locking plate includes a vertical plate 622 and a horizontal plate 623, a protruding end 624 is formed on one side of the horizontal plate, the protruding end is locked to the limiting shaft through a fastener, the locking hole is formed in the vertical plate, and the iron core is horizontally disposed and inserted into the locking hole. Thus, the convex end is formed on one side of the horizontal plate, the vertical plate can be locked on the upper side of the limiting shaft through the fastening piece, and the vertical plate can be enabled to avoid the rotation of the limiting shaft. Through set up the lockhole on vertical board, be convenient for cooperate with the iron core of locking coil in the horizontal direction, realize the locking function.

Preferably, referring to fig. 1 and 2, further includes an operation panel 70, an isolation operation shaft 80 and a ground operation shaft 90, first bending plates 42 are formed at left and right sides and upper and lower sides of the position conversion plate, the position conversion plate is installed at the front side of the frame through the first bending plates, second bending plates 71 are formed on the left and right sides of the operation panel, the operation panel is mounted on the front side of the position conversion plate through the second bending plates, the rotary valve and the driving plate are arranged between the operating panel and the position conversion plate, the isolation operation shaft and the ground operation shaft are rotatably mounted on the frame, and the operation panel is formed with an isolation operation hole 72 corresponding to the isolation operation shaft, a ground operation hole 73 corresponding to the ground operation shaft, and a key operation hole 74 corresponding to the key shaft. The operation panel is used for enclosing components such as the rotary valve, the driving plate and the like, plays a role of protection, is attractive in appearance, and can realize the operation of the isolation operation shaft, the grounding operation shaft and the key shaft by forming the isolation operation hole, the grounding operation hole and the key operation hole on the operation panel. An operation mark can be arranged on the operation panel according to the requirement.

Preferably, referring to fig. 1 and 2, the locking device further comprises an electrically operated locking assembly 110, the electrically operated locking assembly comprises a stop pin 111, a support plate 112, a spring plate 113 and a microswitch 114, the stop pin is horizontally mounted on the stop shaft, the support plate comprises a plate body 1121, connecting lugs 1122 formed by bending upwards from two sides of the plate body, transmission lugs 1123 formed by bending downwards from two sides of the plate body, a guide tab 1124 formed by bending downwards from one end of the plate body, and a connecting tail 1125 formed by bending downwards from the other end of the plate body, a guide clip 1126 is formed in the middle of the guide tab, the microswitch is mounted at the bottom of the frame through a third bending plate 115, the microswitch is located above the stop shaft, the support plate is disposed between the microswitch and the stop shaft, the two connecting lugs of the support plate are rotatably mounted at the left side and the right side of the microswitch through a rotating shaft, and the transmission lug is abutted against the upper side of the limiting pin, the limiting shaft is accommodated in the guide clamping opening, one end of the spring piece is fixedly connected with the connecting tail piece, the other end of the spring piece is abutted against a contact 1141 of the microswitch in an obliquely upward state, and the microswitch is connected into an electric operation loop of the three-station mechanism. Thus, the interlocking function of manual operation and electric operation of the three-station mechanism can be realized through the matching of the electric operation interlocking component and the limiting shaft, namely, when the three-station mechanism is manually operated, the key opens the rotary valve, the limiting shaft rotates and drives one end of the supporting plate upwards through the limiting pin, when the supporting plate rotates, the spring leaf fixedly connected with the connecting tail piece of the supporting plate is driven upwards, the spring leaf further drives the contact of the micro switch to disconnect the micro switch, because the micro switch is connected into the electric operation loop of the three-station mechanism, at the moment, the electric operation loop of the three-station mechanism is disconnected, and the three-station mechanism cannot be operated in an electric mode, so that the situation that the three-station mechanism is operated in an electric mode by a background when the three-station mechanism is manually operated is avoided, and the possibility of accidental injury to operators is avoided.

In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the invention. The foregoing description is only illustrative of the preferred embodiments of the invention, which can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. All the contents that do not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention all still belong to the protection scope of the technical solution of the present invention.

Claims (4)

1. The utility model provides an electric interlocking device of three station mechanisms which characterized in that: the locking device comprises a key shaft (10), a rotary valve (20), a frame (30), a position conversion plate (40), a drive plate (50) and a locking assembly (60), wherein the locking assembly comprises a limiting shaft (61), a locking plate (62), a locking coil (63) and a locking mounting plate (64), the position conversion plate is mounted on the front side of the frame, the middle line position of the rotary valve, close to the top, is rotatably mounted on the front side of the position conversion plate through a pin shaft (100), the limiting shaft is rotatably mounted on the frame, the key shaft is fixedly connected to the front end of the limiting shaft, penetrates out of the front side of the position conversion plate and is located below the rotary valve; the driving plate is arranged between the rotary valve and the front side of the position conversion plate, the bottom end of the driving plate is fixedly connected to the key shaft, a first sliding pin (51) is formed at the position, close to the top end, of the front side of the driving plate, a second sliding pin (52) is formed at the position, close to the key shaft, of the rear side of the driving plate, a sliding groove (21) extending along the central line is formed at the position, close to the pin shaft, of the central line of the rotary valve, the first sliding pin is arranged in the sliding groove in a penetrating mode, a clearance groove (41) is formed at the position, close to the key shaft, of the position conversion plate, and the second sliding pin is arranged in the clearance groove in a penetrating mode; the locking mounting plate is mounted at the bottom of the frame, the locking coil is mounted on the locking mounting plate, the locking plate is fixedly connected to the limiting shaft, a locking hole (621) is formed in the locking plate, and an iron core (631) of the locking coil penetrates through the locking hole; the circuit of the locking coil is connected with a contact of an electrified display in series, and the electrified display is connected with the wire outlet end of the gas-filled cabinet breaker.

2. An electrical interlock mechanism for a three position mechanism according to claim 1, wherein: the locking plate comprises a vertical plate (622) and a horizontal plate (623), a convex end (624) is formed on one side of the horizontal plate, the convex end is locked on the limiting shaft through a fastener, the locking hole is formed in the vertical plate, and the iron core is horizontally arranged and penetrates through the locking hole.

3. An electrical interlock mechanism for a three position mechanism according to claim 1, wherein: also comprises an operation panel (70), an isolation operation shaft (80) and a grounding operation shaft (90), first bending plates (42) are formed on the left side, the right side, the upper side and the lower side of the position conversion plate, the position conversion plate is arranged at the front side of the frame through the first bending plate, second bending plates (71) are formed at the left side and the right side of the operation panel, the operating panel is arranged at the front side of the position conversion plate through the second bending plate, the rotary valve and the driving plate are arranged between the operating panel and the position conversion plate, the isolation operation shaft and the grounding operation shaft are rotatably mounted on the frame, and an isolation operation hole (72) corresponding to the isolation operation shaft, a grounding operation hole (73) corresponding to the grounding operation shaft and a key operation hole (74) corresponding to the key shaft are formed in the operation panel.

4. An electrical interlock mechanism for a three position mechanism according to claim 1, wherein: the electric operation interlocking device further comprises an electric operation interlocking component (110), the electric operation interlocking component comprises a limiting pin (111), a supporting plate (112), a spring piece (113) and a microswitch (114), the limiting pin is horizontally arranged on the limiting shaft, the supporting plate comprises a plate body (1121), connecting lug pieces (1122) formed by bending upwards from two sides of the plate body, transmission lug pieces (1123) formed by bending downwards from two sides of the plate body, guide pieces (1124) formed by bending downwards from one end of the plate body and connecting tail pieces (1125) formed by bending downwards from the other end of the plate body, a guide clamping opening (1126) is formed in the middle of each guide piece, the microswitch is arranged at the bottom of the frame through a third bending plate (115), the microswitch is positioned above the limiting shaft, the supporting plate is arranged between the microswitch and the limiting shaft, the two connecting lug pieces of the supporting plate are rotatably arranged on the left side and the right side of the micro switch through rotating shafts, the transmission lug pieces are abutted to the upper side of the limiting pin, the limiting shaft is accommodated in the guide clamping opening, one end of the spring piece is fixedly connected with the connecting tail piece, the other end of the spring piece is obliquely and upwardly abutted to a contact (1141) of the micro switch, and the micro switch is connected into an electric operation loop of the three-station mechanism.

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