CN209860466U

CN209860466U - Power distribution switchgear and aviation plug interlocking device thereof

Info

Publication number: CN209860466U
Application number: CN201920725857.8U
Authority: CN
Inventors: 何志华; 袁宏志; 余其贵; 李剑胜; 林明瑞; 叶志勇
Original assignee: Xiamen Huadian Switchgear Co Ltd
Current assignee: Xiamen Huadian Switchgear Co Ltd
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2019-12-27
Anticipated expiration: 2029-05-20

Abstract

The utility model provides an interlock and distribution switchgear are inserted in aviation, this distribution switchgear includes that cabinet body, handcart and aviation insert the interlock. The aviation plug interlocking device comprises a base, a crank arm, a sliding plate, a pulling rod and an interlocking plug board. The base comprises a first fixing plate and a second fixing plate, and the first fixing plate is provided with a clamping groove and a narrow groove. The crank arm is fixed on the second fixing plate, a roller is arranged at the first end of the crank arm, and the second end of the crank arm is tilted and inserted into the slot of the first fixing plate. The sliding plate is arranged on the first fixing plate and shields the clamping groove on the first fixing plate. The sliding plate is provided with a through groove for the tilting crank arm to penetrate through. The interlocking plug board is arranged on the second fixing plate, and the outer end of the interlocking plug board protrudes out to prevent the door plate of the power distribution switchgear from being closed. When the second end of the crank arm moves upwards, the sliding plate can be pulled, when the clamping groove on the first fixing plate is pulled to be exposed, the interlocking inserting plate retracts inwards under the action of external force and is inserted into the clamping grooves of the first fixing plate and the sliding plate, and the door plate can be closed.

Description

Power distribution switchgear and aviation plug interlocking device thereof

Technical Field

The disclosure relates to the field of high-voltage switches, in particular to a power distribution switchgear and an aviation plug interlocking device thereof.

Background

The distribution switchgear is a common distribution switchgear, and the voltage of the distribution switchgear can reach 3.6 kV-40.5 kV. At present, most of distribution switch equipment is of an armored movable type, namely a movable handcart and a distribution switch equipment body are matched. The secondary components on the hand truck are connected to the internal electrical components of the switchgear assembly by means of an aircraft plug. At present, the locking of the aviation plug on the handcart is realized through the interlocking device of a swing rod type, namely, after the aviation plug of the handcart is inserted into an aviation socket in a cabinet, the handcart moves to a working position from a test position, at the moment, the swing rod of the interlocking device just blocks a handle of the aviation plug, so that the handle of the aviation plug is clamped by the swing rod and cannot be pulled open, the purpose that the aviation plug cannot be pulled out is achieved, and the circuit breaker of the handcart normally works under the condition that a secondary circuit is conducted is ensured.

However, when the circuit breaker is operated, the aviation plug and the aviation socket cannot be matched in place, that is, the aviation plug may not be accurately inserted into the aviation socket, that is, the secondary circuit is not connected, in this case, if the circuit breaker is powered, the secondary circuit is not turned on, and the circuit breaker cannot be switched on to achieve the purpose of power transmission, and an accident risk may be caused because the circuit breaker cannot be switched off.

SUMMERY OF THE UTILITY MODEL

In order to solve the risk problem that an aviation plug existing in the related art is not inserted into an aviation socket, the circuit breaker can not be switched on to achieve the purpose of power transmission or cannot be switched off to cause an accident, the disclosure provides a power distribution switch device and an aviation plug interlocking device thereof.

The present disclosure provides an aviation plug interlock, including:

the base is used for being fixed on the inner wall of a cabinet body of the power distribution switch equipment and comprises a first fixing plate and a second fixing plate connected with the first fixing plate, and the first fixing plate is provided with a clamping groove and a narrow groove;

the crank arm is installed on the second fixing plate, a roller is connected to the first end, far away from the first fixing plate, of the crank arm, the first end of the crank arm sinks under the action of the gravity of the roller, and the second end of the crank arm tilts;

the sliding plate is arranged on the first fixing plate and provided with a through groove, the tilting second end of the crank arm is inserted into the slot of the first fixing plate through the through groove, and the sliding plate is provided with a clamping groove;

the pulling rod is connected with the sliding plate, and when the roller moves upwards under the action of external force, the second end of the crank arm moves downwards and leaves the through groove on the sliding plate, so that the pulling rod can pull the sliding plate to move;

the interlocking plug board is arranged on the second fixing plate and can move relative to the second fixing plate, when the second end of the crank arm moves upwards, the sliding plate can be pulled, and when the sliding plate is pulled to expose the clamping groove on the first fixing plate, the interlocking plug board retracts inwards under the action of external force and is inserted into the clamping groove of the first fixing plate and the clamping groove on the sliding plate, and when the clamping groove on the first fixing plate is not exposed, the outer end of the interlocking plug board protrudes out of the second fixing plate.

Optionally, the aviation plug interlocking device further comprises a door plate interlocking sliding plate mounted on the second fixing plate, the door plate interlocking sliding plate is connected with the connecting lever through a linkage plate, and the connecting lever drives the door plate interlocking sliding plate to move through the linkage plate;

when the second end of the crank arm moves upwards, the door panel interlocking sliding plate is driven to move towards the direction close to the first fixing plate, the door panel interlocking sliding plate retracts inwards, and the door panel interlocking sliding plate is located in the range of the second fixing plate;

when the second end of the crank arm moves downwards, the linkage plate is driven to move towards the direction far away from the first fixing plate, and the end part of the door panel interlocking sliding plate protrudes out of the second fixing plate.

Optionally, the door panel interlock is mounted on the second fixing plate through a fixing rod, the door panel interlock sliding plate is provided with an elongated slot, and the elongated slot is used for the fixing rod to penetrate through and provides a moving space for the movement of the door panel interlock sliding plate;

the end part of the fixed rod is also provided with a circular ring clamping piece used for blocking the door panel interlocking sliding plate from sliding out.

Optionally, the linkage plate is connected with the crank arm through the roller.

Optionally, the sliding plate is provided with a notch below the through groove, and the notch is used for avoiding the crank arm when the sliding plate moves. Optionally, a distance from the slot of the first fixing plate to the second fixing plate is smaller than a distance from the card slot to the second fixing plate.

Optionally, the aviation plug-in interlocking device is still including connecting the elastic component of interlocking picture peg, the first end of elastic component is connected the interlocking picture peg, the second end of elastic component is connected to installing on the dead lever on the second fixed plate, the interlocking picture peg inserts behind the draw-in groove, the elastic component keeps the interlocking picture peg inserts the state of draw-in groove.

Optionally, a long notch is formed in the interlocking plug board, the interlocking plug board is fixed on the second fixing plate through a mounting column, one end of the mounting column is fixed on the second fixing plate, the other end of the mounting column penetrates through the long notch, and the long notch provides a moving space for the interlocking plug board to move relative to the mounting column;

the end part of the mounting column is also provided with a circular ring clamping piece used for blocking the interlocking inserting plate from sliding out.

Optionally, the aviation plug interlocking device further comprises an elastic stretching piece mounted on the back of the first fixing plate, one end of the elastic stretching piece is connected with the first end of the crank arm, and the other end of the elastic stretching piece is connected to the fixing piece above the crank arm.

Optionally, an aviation buckle plate is further arranged on one side of the sliding plate, which is opposite to the second fixing plate.

Optionally, a lifting lug is fixed on the sliding plate, one end of the pulling rod is fixed on the lifting lug, the other end of the pulling rod penetrates through the second fixing plate and extends out, a pressure spring is sleeved on the pulling rod, and the pressure spring is compressed between the lifting lug and the second fixing plate.

The present disclosure additionally provides an aviation plug interlock, comprising:

the base is used for being fixed on the inner wall of a cabinet body of the power distribution switch equipment and comprises a first fixing plate and a second fixing plate connected with the first fixing plate, and a slot is formed in the first fixing plate;

the crank arm is installed on the second fixing plate, a roller is connected to the first end, far away from the first fixing plate, of the crank arm, the first end of the crank arm sinks under the action of the gravity of the roller, the second end of the crank arm tilts, and the second end of the crank arm is inserted into the clamping groove of the first fixing plate;

door plant interlocking slide installs on the second fixed plate, through linkage board with the connecting lever is connected, the connecting lever passes through the linkage board drives door plant interlocking slide removes when the second end of connecting lever shifts up, drive door plant interlocking slide moves to being close to the direction of first fixed plate, door plant interlocking slide contracts in, door plant interlocking slide is located in the second fixed plate, when the second end of connecting lever moves down, drive the linkage board moves to the direction of keeping away from first fixed plate, the tip of door plant interlocking slide is outstanding the second fixed plate.

The utility model also provides a distribution switchgear, including the cabinet body, handcart and foretell aviation plug interlock, aviation plug interlock installs on the inner wall of the cabinet body, and is close to the door plant of the cabinet body, the handcart can for the cabinet body removes.

Optionally, the handcart has the oblique bent plate of interlocking the handcart push when the cabinet is internal, the oblique bent plate of interlocking with the contact of aviation plug interlock's gyro wheel promotes the gyro wheel rebound.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

the present disclosure provides an aviation plug interlock device, which comprises a base, a crank arm, a sliding plate, a pulling rod and an interlock plug board. The base comprises a first fixing plate and a second fixing plate, and the first fixing plate is provided with a clamping groove and a narrow groove. The connecting lever is fixed on the second fixing plate, a roller is arranged at the first end of the connecting lever, the first end of the connecting lever sinks under the action of the roller, and the second end is tilted and inserted into the slot of the first fixing plate. The sliding plate is arranged on the first fixing plate and can shield the clamping groove on the first fixing plate. The sliding plate is provided with a through groove for the tilting crank arm to penetrate through. The interlocking insertion plate is arranged on the second fixing plate, and when the clamping groove in the first fixing plate is not exposed, the outer end of the interlocking insertion plate protrudes out of the second fixing plate to prevent the door plate of the power distribution switchgear from being closed. When the gyro wheel of turning arm moved up, the turning arm no longer blockked the sliding plate and removed, and the pulling pole can make the sliding plate remove rightwards to make the aviation plug insert to the aviation socket in, expose the draw-in groove on the first fixed plate simultaneously, make the interlocking picture peg draw in and insert to the draw-in groove of first fixed plate and the draw-in groove on the sliding plate, at this moment, can close distribution switchgear's door plant. Therefore, after the sliding plate moves to the right, the aviation plug on the handcart can be inserted into the aviation socket, and the door plate can be closed. That is, after the aviation plug inserts to the aviation socket, just can close the door plant, if the door plant can't close then can not shake the handcart into operating position, that is to say, avoided the condition that does not connect at secondary circuit, continue to carry out the connection of primary circuit, and then avoided secondary circuit not to switch on and lead to the unable combined floodgate of circuit breaker not to reach the power transmission purpose or the unable condition of separating brake and cause the risk of accident, guaranteed staff's personal safety.

The present disclosure additionally provides an aircraft plug interlocking device, which comprises a base, a crank arm and a door panel interlocking slide plate. The base comprises a first fixing plate and a second fixing plate, and the first fixing plate is provided with a narrow slot. The installation of connecting lever on the second fixed plate, the first end of connecting lever is connected with the gyro wheel under the action of gravity of gyro wheel, the first end of connecting lever sinks, the second end perk of connecting lever inserts to the double-layered groove of first fixed plate in. The door panel interlocking sliding plate is arranged on the second fixing plate and is connected with the connecting lever through the linkage plate, and the connecting lever drives the door panel interlocking sliding plate to move through the linkage plate. When the second end of connecting lever shifts up, drive door plant interlocking slide and move to the direction that is close to first fixed plate, door plant interlocking slide contracts in, and door plant interlocking slide is located the second fixed plate, and distribution switchgear's door plant can be closed. When the second end of the crank arm moves downwards, the linkage plate is driven to move towards the direction far away from the first fixing plate, and the end part of the door plate interlocking sliding plate protrudes out of the second fixing plate to block the closing of the door plate. Therefore, when the handcart has not pushed into the cabinet body, the door plate interlocking sliding plate extends out, and the door plate cannot be closed because the door plate interlocking sliding plate is blocked, namely, the door plate cannot be closed when the handcart has not pushed into the cabinet body. When the handcart is pushed into the cabinet body and enters the test position, the roller moves upwards, the linkage plate connected with the roller enables the door plate interlocking sliding plate to retract into the cabinet, the door plate can slide downwards to close, and the door plate can be closed after the handcart is assembled with the cabinet. When the handcart was shaken into operating position from the experimental position, gyro wheel automatic re-setting, door plant interlocking slide also recovered original position, and the door plant was blocked by the outer end of door plant interlocking slide this moment and can't be upwards lifted, namely can't open the door plant this moment, has guaranteed that the circuit breaker must operate under the state of closing the door to personal safety has been guaranteed.

The present disclosure additionally provides a power distribution switchgear, which includes a cabinet, a handcart and the aviation plug interlock device described above. This distribution switchgear is because of adopting the aviation plug interlock of going to the air, guarantees that the handcart just can get into operating position after aviation plug inserts the aviation socket, and then has avoided the secondary circuit not to switch on and lead to the unable combined floodgate of circuit breaker to reach the condition of the risk that the power transmission purpose or unable separating brake caused the accident, has guaranteed staff's personal safety.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural diagram of a power distribution switchgear in an exemplary embodiment according to the present disclosure.

Fig. 2 is a schematic perspective view of an aircraft plug interlock device with a circuit breaker of a hand truck in an operating position according to the present disclosure in an exemplary embodiment.

Fig. 3 is a left side view of fig. 2.

Fig. 4 is a front view of fig. 2.

Fig. 5 is a simplified schematic illustration of fig. 2 with the interlocking plug board omitted for clarity of the crank arm configuration.

Fig. 6 is a schematic perspective view of an aircraft door latch interlock with a circuit breaker of a hand truck in a testing position and a door panel not closed according to the present disclosure in an exemplary embodiment.

Fig. 7 is a left side view of fig. 6.

Fig. 8 is a front view of fig. 6.

Fig. 9 is a left side view of fig. 5.

Detailed Description

For further explanation of the principles and construction of the present disclosure, reference will now be made in detail to the preferred embodiments of the present disclosure, which are illustrated in the accompanying drawings.

As shown in fig. 1, the present disclosure provides a power distribution switchgear 100, the power distribution switchgear 100 including an aircraft plug interlock 10, a cabinet 20, and a hand truck 30. A plurality of electrical components for realizing the function of the switch cabinet are arranged in the cabinet body 20. The aircraft plug interlock device 10 is mounted on an inner wall of the cabinet 20, adjacent to the door panel 21 of the cabinet 20. The handcart 30 can move relative to the cabinet 20 as a whole and can be drawn out of the cabinet 20. The hand truck 30 is provided with an aviation plug and a circuit breaker. When the handcart 30 moves to the test position of the cabinet body 20, the aviation plug on the handcart 30 can be connected with the aviation socket in the cabinet body 20, so that the conduction of a secondary circuit is ensured. When the handcart 30 moves from the test position to the working position, the primary loop is conducted, all the components in the cabinet body 20 are in the working state, and the circuit breaker is in the open state.

The terms mentioned in this disclosure are explained as follows:

the primary circuit is an electric circuit formed by connecting primary equipment to generate, transform, transmit, distribute or perform other production.

The secondary circuit means: the secondary devices are connected with each other to form an electric loop for monitoring, controlling, adjusting and protecting the primary devices.

The primary equipment is as follows: high-voltage electrical equipment for the direct production, transmission and distribution of electrical energy, such as generators, transformers, circuit breakers, disconnectors, reclosers, contactors, knife switches, busbars, transmission lines, power cables, reactors, motors, etc.

The secondary equipment is as follows: the low-voltage electric equipment required by monitoring, controlling, regulating and protecting the work of the primary equipment and providing the operation condition or production command signals for operation and maintenance personnel, such as fuses, control switches, relays, control cables and the like.

The test positions refer to: when the aviation plug is plugged, the secondary circuit is conducted, and the circuit breaker of the handcart is in a brake-off state.

The working position is as follows: when the aviation plug is plugged, the secondary circuit and the primary circuit are both conducted, and the circuit breaker of the handcart is in a brake-off state.

The present disclosure provides an aviation plug interlock 10 for achieving an interlock between a hand truck 30 and a cabinet 20. Specifically, referring to fig. 2-4, aircraft plug-in interlock 10 includes a base 11, a crank arm 12, a slide plate 13, a pulling rod 14, and an interlock insert plate 15.

The base 11 may be secured to an interior wall of the cabinet of the electrical distribution switchgear 100. The base 11 includes a first fixing plate 111 and a second fixing plate 112 connected to the first fixing plate 111. An included angle is formed between the first fixing plate 111 and the second fixing plate 112, and the included angle may be 90 degrees, that is, the first fixing plate 111 and the second fixing plate 112 are vertically connected. In this way, the first fixing plate 111 and the second fixing plate 112 can be adapted to the shape of the inner wall of the cabinet 20, so that the base 11 can be stably fixed on the inner wall of the cabinet 20.

Further, in order to reduce the interference between the bent portion of the base 11 and the inner wall of the cabinet 20, an arc-shaped chamfer 113 is provided at the joint of the first fixing plate 111 and the second fixing plate 112.

Further, a slot 1111 is formed at a position near the arc-shaped chamfer 113 at the bottom of the first fixing plate 111, and the slot 1111 is used for the end of the crank arm 12 to penetrate.

Further, the first fixing plate 111 is provided with a card slot 1112 above the slot 1111, and the distance from the card slot 1112 to the second fixing plate 112 is longer than that from the slot 1111 to the second fixing plate 112. Thus, when crank arm 12 tilts up in slot 1111, crank arm 12 blocks slide plate 13 from moving to the right, and slide plate 13 covers slot 1112. The slot 1112 is used for the interlocking board 15 to pass through.

The first fixing plate 111 and the second fixing plate 112 may be integrally formed or welded.

It is understood that the included angle formed between the first fixing plate 111 and the second fixing plate 112 may vary according to the shape of the inner wall of the cabinet 20 to be fixed.

The crank arm 12 is mounted on the second fixing plate 112 by a mounting shaft 121. The crank arm 12 includes a first end 12a and a second end 12 b. The first end 12a is inserted into the slot 1111 of the first fixing plate 111, and the first end 12a protrudes from the first fixing plate 111. The second end 12b is connected to a roller 122. The roller 122 may be a nylon roller. As shown in fig. 5, the roller 122 is connected to the crank arm 12 by a connecting member 123. The connecting member 123 is in contact with but not fixed to the second fixing plate 112 such that the second end 12b of the crank arm 12 can swing with respect to the mounting shaft 121. When the roller 122 does not have an external force, the second end 12b of the crank arm 12 sinks with respect to the mounting shaft 121 and the first end 12a tilts with respect to the mounting shaft 121 due to the gravity of the roller 122. When the roller 122 is pushed up by an external force, the second end 12b of the crank arm 12 moves upwards, the first end 12a moves downwards, the crank arm 12 is straight, and the second end 12b and the first end 12a are in the same straight line.

The mounting axle 121 is mounted at two thirds of the crank arm 12, and the second end 12b and the first end 12a can swing relative to the mounting axle 121. The mounting shaft 121 protrudes from the front surface of the second fixing plate 112, and the crank arm 12 is mounted at the end of the protruding portion of the mounting shaft 121, so that a certain distance is maintained between the crank arm 12 and the second fixing plate 112, and thus, the first end 12a of the crank arm 12 can be inserted into the clamping groove 1111, which has a certain distance from the arc-shaped chamfer 113.

Further, as shown in fig. 3, an elastic stretching member 124 is further disposed on the back surface of the first fixing plate 111. The elastic tension member 124 may be a tension spring. The elastic stretching member 124 has one end connected to the first end 12a of the crank arm 12 and the other end connected to the fixing member 125 above the crank arm 12. In this way, when the second end 12b of the crank arm 12 is lifted without external force, the first end 12a of the crank arm 12 is ensured to be tilted, and the sliding plate 13 is ensured to shield the notch 1112 on the first fixing plate 111, so that the end of the interlocking board 15 cannot be inserted into the notch 1112 and the other end thereof protrudes out of the second fixing plate 112, thereby blocking the door panel 21 of the cabinet 20 from being closed. In fig. 3, only one end of the elastic tension member 124 is shown connected to the fixing member 125 and the other end of the elastic tension member 124 is not shown connected to the first end 12a of the crank arm 12 due to the cross-sectional view.

Further, as shown in fig. 5, the crank arm 12 is provided with another roller 122 in addition to the roller 122 connected to the second end 12b, so that the crank arm 12 has better balance performance. The other roller 122 is located at the left side of the mounting shaft 121 (here, the left and right directions are referred to fig. 3), and the rollers 122 at the second end 12b are symmetrically distributed with respect to the mounting shaft 121. Another roller 122 is also connected to the crank arm 12 by a link 123. The other roller 122 is in contact with but not fixed to the second fixing plate 112.

Referring back to fig. 2 and 4, the sliding plate 13 is mounted on the first fixing plate 111. Slide plate 13 has a long groove 13 a. One end of the fixing member 131 is fixed on the first fixing plate 111, and the other end penetrates the elongated slot 13a, and an annular locking piece 132 for preventing the sliding plate 13 from sliding out is disposed at the end of the fixing member 131.

As shown in fig. 5, slide plate 13 has a through groove 133a and a notch 133b at a position corresponding to slot 1111 of first fixed plate 111, where through groove 133a is located at the edge and notch 133b is located below through groove 133 a. The through groove 133a has a side wall, and when the first end 12a of the crank arm 12 is tilted, the side wall 133a of the through groove 133a blocks the slide plate 13 from moving rightward. The notch 133b is used to avoid the crank arm 12 when the slide plate 13 moves. After first end 12a of crank arm 12 moves down, it moves into notch 133b avoiding the side wall of through groove 133a, and because the space of notch 133b is large, crank arm 12 will not interfere with sliding plate 13, so sliding plate 13 can move right.

The sliding plate 13 is provided with a slot 134 corresponding to the slot 1112 of the first fixing plate 111. When slide plate 13 is moved to the right, notches 134 in slide plate 13 are aligned with notches 1112 in first stationary plate 111 in a front-to-back manner to allow insertion of interlocking board 15. The distance from the clamping groove 1111 of the first fixing plate 111 to the second fixing plate 112 is smaller than the distance from the clamping groove 1112 to the second fixing plate 112, so that after the sliding plate 13 moves rightwards, the clamping groove 1112 can be exposed for the insertion of the interlocking inserting plate 15.

Further, an aviation insertion plate 135 is further provided on the side of the sliding plate 13 opposite to the second fixing plate 112. The aviation plug board 135 is a U-shaped structure, and is used to be fastened with an aviation plug on the handcart 30, and when the sliding board 13 moves rightwards, the aviation plug board drives the aviation plug board to move rightwards, so that the aviation plug board is inserted into an aviation socket inside the cabinet body.

A lug 141 is fixed to slide plate 13. One end of the pulling rod 14 is fixed on the lifting lug 141, and the other end thereof extends through the second fixing plate 112, and the extending part can be pulled by the worker. The pulling rod 14 is sleeved with a compression spring 142, and the compression spring 142 is compressed between the lifting lug 141 and the second fixing plate 112, that is, the compression spring 142 extends from the lifting lug 141 to the second fixing plate 112, in fig. 5, only a part of the compression spring is shown, but not all of the compression spring are shown.

After the crank arm 12 moves down, pulling the pulling rod 14 can manually pull the sliding plate 13 to move right.

Further, as shown in fig. 2 and 3, the interlocking insert plate 15 is mounted to the second fixing plate 112 by means of mounting posts 151. The interlocking board 15 is provided with a long notch 152, and the long notch 152 provides enough moving space for the movement of the interlocking board 15. The long notch 152 may be an oval long notch. One end of the mounting post 151 is fixed to the second fixing plate 112, and the other end passes through the elongated slot 152, so that the interlocking insertion plate 15 is mounted on the mounting post 151. The end of the mounting post 151 is provided with a circular ring clip 153 that prevents the interlocking insert plate 15 from slipping out.

The interlocking insertion plate 15 has a substantially zigzag shape extending in a longitudinal direction of the second fixing plate 112, i.e., in a direction perpendicular to the first fixing plate 111. When the slot 1112 of the first fixing plate 111 is not exposed, the outer end 15a of the interlocking board 15 protrudes beyond the edge of the second fixing plate 112 to prevent the door 21 of the cabinet 20 from closing

The interlocking insertion plate 15 is further connected with an elastic member 154, and a first end of the elastic member 154 is connected with the interlocking insertion plate 15 and a second end thereof is connected to a fixing rod 162 installed on the second fixing plate 112. Fixed bar 162 may also be used to mount door lock interlock slide 16 as will be described later.

The interlocking plug board 15 is movable relative to the second fixing plate 112. When the engaging groove 1112 of the first fixing plate 111 is not exposed, the sliding plate 13 blocks the interlocking board 15 from moving toward the first fixing plate 111, so that the outer end 15a of the interlocking board 15 protrudes beyond the edge of the second fixing plate 112 to prevent the door panel 21 of the cabinet 20 from closing. When the slide plate 13 moves rightward to expose the engaging groove 1112 on the first fixing plate 111, the interlocking board 15 moves (retracts) in the direction of the first fixing plate 111 when an external force is applied (for example, the door plate 21 is pressed), the inner end 15b of the interlocking board 15 is inserted into the engaging groove 1112 on the first fixing plate 111, and the outer end 15a is retracted into the second fixing plate 112, so that the door plate 21 can be closed. When the handcart leaves the test position and enters the working position, the roller 122 returns to the original position (i.e. the roller 122 sinks), and the interlocking board 15 is still inserted into the slot 1112 of the sliding plate 13 under the pulling force of the elastic part 154, so that the sliding plate 13 cannot be pulled, i.e. the aviation plug cannot be pulled out.

Referring to fig. 6 to 8, when the handcart 30 is assembled in the test position (at this time, the door panel is not closed), the interlocking inclined bent plate on the handcart 30 pushes the roller 122 of the aviation plug interlocking device 10 to move upward, the first end 12a of the crank arm 12 moves downward, and the crank arm 12 is in a straight state. At this time, the sliding plate 13 is pushed to the right, so that the aviation plug on the handcart 30 is buckled on the aviation socket. At this time, the notch 1112 of the first fixed plate 111, which is hidden by the slide plate 13, is exposed and aligned with the notch 134 of the slide plate 13, leaving a space for the interlocking insertion plate 15 to move toward the first fixed plate 111.

When the slot 1112 of the first fixing plate 111 is exposed, the door panel 21 of the cabinet can be closed, as shown in fig. 2 to 4, the door panel 21 pushes the interlocking board 15 to move inward, so that the inner end 15b of the interlocking board 15 is inserted into the slot 134 and the slot 1112, and the interlocking board 15 is located within the range of the second fixing plate 112. If at this moment, on not detaining the aviation plug to the aviation socket, then draw-in groove 1112 of first fixed plate 111 can not expose, interlocking picture peg 15 can't inwards move, its outer end 15a can be outstanding the edge of second fixed plate 112, block that door plant 21 closes, and then can't continue to operate handcart 30, thereby guaranteed to insert the aviation plug to the prerequisite of aviation socket under, just can continue to wave handcart 30, and then prevent mistake separating brake or mistake closing brake circuit breaker operation, avoided the secondary circuit not to switch on and lead to the unable combined floodgate of circuit breaker not to reach the power transmission purpose or can't separate the floodgate and the condition that causes the risk of accident promptly.

In addition, when the handcart leaves the test position and enters the working position, the roller 122 returns to the original position, but under the action of the elastic piece 154, the interlocking inserting plate 15 can be kept in the original state, namely still inserted into the clamping groove of the sliding plate 13. So, can't stir sliding plate 13, can't dial aviation plug promptly, guarantee at the handcart in the course of the work that aviation plug can not be pulled out to the internal components and parts with on the handcart of protection cabinet, more importantly has ensured staff's personal safety.

Further, as shown in fig. 5 and 9, the crank arm 12 is connected to the door interlocking slide 16 by a linkage plate 17. Specifically, the linkage plate 17 includes a transverse portion and a vertical portion that are perpendicular to each other, and the transverse portion and the vertical portion form a T-shape. The transverse part of the linkage plate 17 is directly connected with the two rollers 122, and the end part of the vertical part is connected with the door panel interlocking sliding plate 16.

One end of the linkage plate 17 connected with the door plate interlocking sliding plate 16 is provided with a U-shaped groove, a linkage shaft 161 is arranged in the U-shaped groove, the linkage shaft 161 is connected with the door plate interlocking sliding plate 16, and the linkage shaft 161 can move in the U-shaped groove when the door plate interlocking sliding plate 16 moves left and right.

The door panel interlocking slide plate 16 is substantially in a zigzag shape, and has elongated grooves 16a formed at both ends thereof, respectively, and the elongated grooves 16a may be in an elliptical shape. The fixing rod 162 has one end fixed to the second fixing plate 112 and the other end penetrating the elongated slot 16a of the door panel interlocking slide plate 16, so that the door panel interlocking slide plate 16 is mounted on the second fixing plate 112. The end of the fixing rod 162 through which the fixing rod passes is provided with a ring card 163 for blocking the door panel interlocking slide 16 from sliding out. The door panel interlocking sliding plate 16 can move left and right along with the movement of the connecting lever 12 under the action of the linkage plate 17, and the long groove 16a provides enough moving space for the movement of the door panel interlocking sliding plate 16.

When the roller 122 is jacked up to move upwards, the linkage plate 17 is driven to move towards the direction close to the first fixing plate 111 (i.e. the direction far away from the door panel of the power distribution switchgear), the door panel interlocking sliding plate 16 retracts inwards, and at the moment, the door panel 21 of the cabinet body 20 can be closed; when the external force acting on the roller 122 disappears, the second end 12b of the crank arm 12 moves downwards to drive the linkage plate to move towards the direction far away from the first fixing plate 111 (i.e. towards the door panel of the cabinet), and the end of the door panel interlocking slide plate 16 protrudes out of the edge of the second fixing plate 112 to prevent the door panel 21 from opening or closing.

Specifically, when handcart 30's circuit breaker began to shake into to operating position from experimental position, as shown in fig. 2 to 4, gyro wheel 122 resumes original position, and gyro wheel 122 sinks promptly, and door plant interlocking slide 16 is outside stretching out under linkage plate 17's effect, and door plant 21 is blocked by door plant interlocking slide 16 this moment, can't be mentioned and open promptly, prevents to miss the electrified interval of income, prevents promptly that handcart's circuit breaker during operation, and the door plant is opened and is aroused the risk of electrocuting. Thus, the door panel interlocking slide plate 16 can ensure personal safety and realize the interlocking of the aviation plug interlocking device and the door panel.

In addition, in another embodiment, the aviation plug interlocking device 10 may not include the interlocking plug board 15, and in this case, the aviation plug interlocking device 10 may also realize interlocking with the circuit breaker of the handcart. In this embodiment, the aviation plug interlock includes a base, a crank arm, and a door panel interlock slide that are identical in construction to the base 11, crank arm 12, and door panel interlock slide 16 of the previous embodiment and will not be described in detail herein. In this embodiment, when the hand truck 30 has not yet pushed into the cabinet, the door panel interlock slide 16 is extended, and the door panel 21 cannot be closed because the door panel interlock slide 16 is blocked. When the circuit breaker is pushed into the cabinet body and is located at a test position, the interlocking inclined bent plate at the upper right part of the circuit breaker is in contact with the roller 122 of the aviation plug interlocking device 10, so that the roller 122 moves upwards, the linkage plate 17 connected with the roller 122 enables the door panel interlocking sliding plate 16 to retract into the cabinet, and at the moment, the door panel 21 can be closed by sliding downwards. That is, after the circuit breaker is assembled, the door panel can be closed. When the circuit breaker is shaken into operating position from the experimental position, the oblique bent plate on the circuit breaker breaks away from the gyro wheel, gyro wheel automatic re-setting to door plant interlocking slide 16 also resumes original position, and the door plant can't be upwards mentioned this moment, namely can't open the door plant this moment, has guaranteed that the circuit breaker must operate under the state of closing the door, thereby has guaranteed personal safety.

In conclusion, the aviation plug interlocking device realizes interlocking among the handcart, the aviation plug interlocking device and the door plate, and field maintenance personnel can operate the circuit breaker of the handcart only according to related operation procedures strictly, so that personal installation and electricity utilization safety of maintenance personnel are ensured.

Specifically, when the circuit breaker of the handcart is in a test position, the roller moves upwards, the aviation insertion buckle plate moves rightwards at the moment, the aviation plug is inserted into the socket and buckled, the door plate can be closed, and the circuit breaker can be operated; when the breaker leaves the test position, the aviation plug cannot be pulled out, so that the reliability of the secondary circuit is ensured; and after the circuit breaker leaves the test position, the door plant interlocking slide outwards stretches out, has prevented that the door plant from being lifted and opening, realizes closing the door interlocking, has ensured personal safety.

The above description is only for the purpose of illustrating the preferred embodiments of the present disclosure and is not to be construed as limiting the scope of the present disclosure, but rather is intended to cover all equivalent structural changes made by applying the teachings of the present disclosure to the accompanying drawings.

Claims

1. An aviation plug interlock, comprising:

2. The aircraft plug interlock device according to claim 1, further comprising a door panel interlock slide plate mounted on the second fixing plate, wherein the door panel interlock slide plate is connected to the connecting lever through a linkage plate, and the connecting lever drives the door panel interlock slide plate to move through the linkage plate;

3. The aviation plug interlocking device according to claim 2, wherein the door panel interlocking device is mounted on the second fixing plate through a fixing rod, the door panel interlocking sliding plate is provided with a long groove, and the long groove is used for the fixing rod to penetrate through and provides a moving space for the movement of the door panel interlocking sliding plate;

4. The aircraft insert interlock of claim 2 wherein said linkage plate is connected to said crank arm by said roller.

5. The aircraft insert interlock of claim 1 wherein said slider plate defines a notch below said through slot, said notch adapted to clear said crank arm when said slider plate is moved.

6. The aircraft insert interlock of claim 1 wherein the slot of said first retainer plate is spaced a distance from said second retainer plate that is less than the distance of said card slot from said second retainer plate.

7. The aviation plug interlocking device according to claim 1, further comprising an elastic member connected with the interlocking plug board, wherein a first end of the elastic member is connected with the interlocking plug board, a second end of the elastic member is connected with a fixing rod mounted on the second fixing plate, and after the interlocking plug board is inserted into the slot, the elastic member maintains the state that the interlocking plug board is inserted into the slot.

8. The aviation plug interlocking device according to claim 7, wherein the interlocking plug board is provided with a long notch, the interlocking plug board is fixed on the second fixing plate through a mounting column, one end of the mounting column is fixed on the second fixing plate, the other end of the mounting column penetrates through the long notch, and the long notch provides a moving space for the interlocking plug board to move relative to the mounting column;

9. The aircraft plug interlock device according to claim 1 further comprising an elastic tension member mounted to a back surface of said first retainer plate, said elastic tension member having one end connected to a first end of said crank arm and another end connected to a fixed member above said crank arm.

10. The aircraft plug interlock of claim 1 wherein said slide plate is further provided with an aircraft plug clip on a side opposite said second fixed plate.

11. The aviation plug interlock of claim 1, wherein a lifting lug is fixed to the sliding plate, one end of the pulling rod is fixed to the lifting lug, the other end of the pulling rod extends through the second fixing plate, and a compression spring is sleeved on the pulling rod and located between the lifting lug and the second fixing plate.

12. An aviation plug interlock, comprising:

13. An electrical distribution switchgear comprising a cabinet, a hand truck and an aviation plug interlock as claimed in any one of claims 1 to 12, the aviation plug interlock being mounted on an inner wall of the cabinet and adjacent a door panel of the cabinet, the hand truck being movable relative to the cabinet.

14. The electrical distribution switchgear of claim 13, wherein the hand truck has an interlocking angled plate that contacts a roller of the aviation plug interlock pushing the roller upward when the hand truck is pushed into the cabinet.