CN109841434B - Operation interlocking device for electric appliance cabinet door - Google Patents
Operation interlocking device for electric appliance cabinet door Download PDFInfo
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- CN109841434B CN109841434B CN201711228694.4A CN201711228694A CN109841434B CN 109841434 B CN109841434 B CN 109841434B CN 201711228694 A CN201711228694 A CN 201711228694A CN 109841434 B CN109841434 B CN 109841434B
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- 230000002093 peripheral effect Effects 0.000 claims description 4
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
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Abstract
The invention relates to an electric appliance cabinet door operation interlocking device which comprises a circuit breaker frame, wherein a rotating shaft extending along the vertical direction and a limiting part capable of moving left and right are arranged on the circuit breaker frame; the rotating shaft is further matched with an interlocking piece in a rotation stopping mode, the interlocking piece is provided with a pressed part which drives the rotating shaft to rotate under the pressure when the cabinet door is closed so that the limiting piece can move from the locking position to the unlocking position, and the breaker frame is further provided with an elastic resetting piece which provides acting force for the limiting piece. The circuit breaker chamber of the switch cabinet is prevented from being electrified when the cabinet door is opened, and the main bus is connected to form a high-voltage loop to enter an electrified interval by mistake; the five-prevention interlocking function is perfected, the product performance of the medium-voltage switch cabinet is improved, and the reliability and the safety of the operation and the use of the medium-voltage switch cabinet are ensured.
Description
Technical Field
The invention relates to an operation interlocking device for an electric appliance cabinet door.
Background
According to the requirement of preventing mistaken entering into the electrified interval in the five-prevention requirement of the medium-voltage switchgear, the interlocking control of the removable part of the cabinet body and the electrified compartment needs to be controlled in the running process of the 35kV medium-voltage switchgear. The following operations all present the risk of entering the live interval by mistake: the circuit breaker is swung into the switchgear cabinet door without closing it, and the circuit breaker door is opened when the circuit breaker of the switchgear cabinet is in the operating position. In present medium and high voltage switch cabinet, set up interlock usually and realize interlocking between earthing switch and the circuit breaker, in order to satisfy the five-prevention requirement of cubical switchboard, still need provide one kind and can realize carrying out the interlock between cabinet door and the circuit breaker in order to guarantee staff's security. The existing interlocking device for realizing the interlocking between the cabinet door and the circuit breaker is characterized in that a shaking hole is arranged on a circuit breaker frame, a shaking hole blocking piece is arranged on the shaking hole, a reset spring is arranged on the shaking hole blocking piece, the shaking hole blocking piece blocks the shaking hole to ensure the safety of workers, and when the circuit breaker needs to be shaken into a working position from a test position; but under the condition that the cabinet door is not closed, the shake-in hole blocking piece still can be pulled open to shake in the circuit breaker, still can cause harm to the staff.
Disclosure of Invention
The invention aims to provide an interlocking device for operating a cabinet door of an electric appliance, which aims to solve the problem that the existing interlocking device for realizing interlocking between the cabinet door and a circuit breaker still causes danger to workers.
In order to achieve the purpose, the first technical scheme of the interlocking device for operating the electric appliance cabinet door comprises the following steps: the operation interlocking device for the electric appliance cabinet door comprises a circuit breaker frame and a shake-in hole arranged on the circuit breaker frame, wherein a shake-in hole blocking piece is arranged on the shake-in hole, a rotating shaft extending along the vertical direction and a limiting piece capable of moving left and right are further arranged on the circuit breaker frame, a stop piece capable of enabling the limiting piece to move left and right is matched on the rotating shaft in a rotation stop manner, and a locking position used for limiting the shake-in hole blocking piece of the shake-in hole in the circuit breaker frame to move up and down and an unlocking position used for relieving the limiting piece from limiting the shake-in hole blocking piece are arranged on the; still only in the pivot to rotate the cooperation be used for with cabinet door complex interlocking part, the interlocking part has and receives the pressure area pivot when the cabinet door is closed and rotates so that the locating part by the locking position to the pressurized part that unlocks the position and remove, still be equipped with on the circuit breaker frame and move the elasticity of the effort of locking position to the locking position by the unlocking position for the locating part provides and reset the piece.
The second technical scheme of the interlocking device for operating the electric appliance cabinet door comprises the following steps: on the basis of the first technical scheme of the interlocking device for operating the cabinet door of the electric appliance, the limiting piece is provided with a jack, and the stopping piece comprises a plug part matched with the jack. The stopper drives the locating part to move left and right through the matching of the plug and the jack, and the structure is simple and the operation is convenient.
The third technical scheme of the interlocking device for operating the electric appliance cabinet door is as follows: on the basis of the second technical scheme of the interlocking device for operating the cabinet door of the electric appliance, the part of the stop piece matched with the rotating shaft in a rotation stopping way is a rotation stopping square hole. The square hole has simple structure and is convenient to process.
The fourth technical scheme of the interlocking device for operating the cabinet door of the electric appliance is as follows: on the basis of any one of the first technical scheme to the third technical scheme of the interlocking device for the operation of the electric appliance cabinet door, the elastic reset piece is a torsion spring sleeved on the rotating shaft. The elastic reset piece is directly arranged on the rotating shaft and is easy to control.
The fifth technical scheme of the interlocking device for operating the electric appliance cabinet door is as follows: on the basis of any one of the first technical scheme to the third technical scheme of the interlocking device for the operation of the electric appliance cabinet door, the interlocking piece comprises a striking rod and a roller which is in running fit with the striking rod, and the peripheral surface of the roller forms a pressed part. The outer peripheral face of gyro wheel is the pressurized part with the cabinet door contact, has reduced the friction to the cabinet door when the cabinet door is closed, and is convenient for closing of cabinet door.
The sixth technical scheme of the interlocking device for operating the electric appliance cabinet door is as follows: on the basis of the fifth technical scheme of the interlocking device for operating the cabinet door of the electric appliance, one end of the impact bar, which is far away from the roller, is provided with a square hole of the impact bar, and the impact bar is in rotation stopping fit with the rotating shaft through the square hole of the impact bar.
The seventh technical scheme of the operation interlocking device for the electric appliance cabinet door is as follows: on the basis of any one of the first technical scheme to the third technical scheme of the interlocking device for operating the cabinet door of the electric appliance, the part, used for limiting the baffle of the swinging hole, of the limiting piece is provided with a flanging facing the frame of the circuit breaker. The turn-ups has increased the area of contact of locating part with the spacing piece of shaking into the hole, has improved the spacing stability of locating part to shaking into the hole separation blade.
The eighth technical scheme of the interlocking device for operating the electric appliance cabinet door is as follows: on the basis of any one of the first technical scheme to the third technical scheme of the interlocking device for operating the cabinet door of the electric appliance, the rotating shaft is provided with a limiting groove, and a limiting ring for limiting the stop piece up and down is arranged in the limiting groove. The stop piece is prevented from sliding on the rotating shaft, and the left and right displacement movement of the stop piece to the limiting piece is not facilitated.
The ninth technical scheme of the interlocking device for operating the electric appliance cabinet door is as follows: on the basis of any one of the first technical scheme to the third technical scheme of the interlocking device for operating the cabinet door of the electric appliance, the circuit breaker frame is provided with an interlocking base, the rotating shaft is arranged on the interlocking base, the limiting piece is assembled on the interlocking base in a guiding and sliding manner, and the interlocking base is provided with a limiting groove for limiting the limiting piece to move leftwards. The limiting groove prevents the limiting part from moving leftwards in a transition mode.
The tenth technical scheme of the interlocking device for operating the electric appliance cabinet door comprises the following steps: on the basis of the ninth technical scheme of the interlocking device for operating the cabinet door of the electric appliance, the limiting piece is provided with a jack, the stopping piece comprises a plug part matched with the jack, and the limiting groove limits the plug part to limit the limiting piece to move leftwards.
The invention has the beneficial effects that: the circuit breaker frame is provided with a limiting part for limiting the swinging hole blocking piece, the swinging hole blocking piece is reset by the torsion spring, only when the cabinet door of the switch cabinet is closed, the cabinet door extrudes the interlocking piece, the interlocking piece overcomes the action of the torsion spring through the rotating shaft to enable the limiting part to remove the limitation on the swinging hole blocking piece, the swinging hole blocking piece can be pulled open, the crank is inserted into the swinging hole to swing the circuit breaker into a working position from a test position, the circuit breaker chamber of the switch cabinet is prevented from being electrified when the cabinet door is in an open state, and the main bus is connected to form a high-voltage loop to be mistakenly inserted into an; the five-prevention interlocking function is perfected, the product performance of the medium-voltage switch cabinet is improved, and the reliability and the safety of the operation and the use of the medium-voltage switch cabinet are ensured.
Drawings
FIG. 1 is a schematic structural view of a circuit breaker of the interlock device for operating an electrical appliance cabinet door of the present invention in a test position;
FIG. 2 is a schematic structural view of a circuit breaker of the interlock device for operating an appliance cabinet door of the present invention in an operating position;
FIG. 3 is a schematic view of the electrical apparatus cabinet door operation interlock device of the present invention with the circuit breaker chamber cabinet door removed;
FIG. 4 is a schematic view of the structure of the interlocking device for operating the cabinet door of the electrical appliance according to the present invention, in which the restricting member is extended when the cabinet door is in the open state;
FIG. 5 is a schematic view of the swing-in hole stop of FIG. 4 with the cabinet door in an open position and in a locked position;
FIG. 6 is a schematic structural view showing the movement of the stopper when the door of the interlock apparatus for operating the door of the electric appliance is closed;
FIG. 7 is a schematic view of the swing entry catch of FIG. 6 in an unlocked position with the cabinet door in a closed position;
FIG. 8 is a schematic structural view of the cooperation between the shaking hole blocking piece of the interlocking device for the operation of the cabinet door of the electrical appliance and the interlocking device;
FIG. 9 is a rear view of the interlock device of FIG. 8;
FIG. 10 is an isometric view of the interlock device of FIG. 8;
FIG. 11 is a schematic view of a stop of the interlock device of FIG. 8;
FIG. 12 is a schematic view of the structure of the stop of the interlock device of FIG. 8;
FIG. 13 is a schematic view of the construction of the shaft of the interlock device of FIG. 8;
fig. 14 is a schematic view of the striker of the interlock device of fig. 8.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In the specific embodiment of the interlocking device for the operation of the electric appliance cabinet door, as shown in fig. 1 and 2, the interlocking device for the operation of the electric appliance cabinet door comprises a cabinet body 1, a cabinet door 2 and a circuit breaker 3 positioned in a circuit breaker chamber of a switch cabinet. In the present embodiment, the cabinet door 2 is a door of the breaker chamber, and the cabinet door 2 is located on the front side of the breaker chamber. As shown in fig. 3, the circuit breaker 3 includes a circuit breaker frame 5, an interlock device 4 is disposed on the circuit breaker frame 5, and when the circuit breaker 3 is at a test position, as shown in fig. 1, the circuit breaker 3 does not form a conducting loop, and the circuit breaker chamber is not charged; when the circuit breaker 3 is in the operating position, as shown in fig. 2, the circuit breaker 3 forms a conducting loop, and the circuit breaker chamber is in a high-voltage charged state, so that there is a risk of entering the charged interval by mistake.
In this embodiment, as shown in fig. 3 to 7, a breaker frame 5 is disposed on the front side of the breaker 3 in the breaker chamber, a swing hole 8 for a crank to extend into is disposed on the breaker frame 5 to convert the breaker 3 from a test position to a working position, a swing hole blocking piece 6 for blocking the swing hole 8 is disposed on the swing hole 8, a return spring is disposed between the swing hole blocking piece 6 and the swing hole, and when the crank needs to be inserted into the swing hole 8, the swing hole blocking piece 6 is pulled down to open the swing hole 8 and insert the crank to convert the breaker 3 from the test position to the working position; after shaking into operating position to circuit breaker 3 from experimental position, extracting the crank, shaking into hole separation blade 6 and remounting the shutoff again under the effect of answer spring and shaking into hole 8, the crank can not insert, can not shake into the operation to the circuit breaker, shakes into hole separation blade 6 and can block that the dust gets into the circuit breaker indoor, can play the effect that prevents the maloperation again.
In this embodiment, the interlocking device 7 is provided with a limiting part 14, and a movable stroke of the limiting part 14 is provided with a locking position for limiting the upward and downward movement of the shaking hole blocking piece 6 of the shaking hole 8 on the breaker frame 5 and an unlocking position for unlocking the upward and downward movement of the shaking hole blocking piece 8 of the shaking hole 6 on the breaker frame 3; as shown in fig. 4 and 5, when the cabinet door 2 is in an open state, the interlocking device 7 moves the limiting member 14 to a locking position to the left under the action of the torsion spring, the locking position is located at the lower end of the swing hole blocking piece 6, the limiting member 14 limits the swing hole blocking piece 6 at the locking position so as to lock the swing hole blocking piece 6 on the swing hole 8, the swing hole blocking piece 6 cannot be pulled down, the swing hole 8 keeps a closed state, the swing handle cannot be inserted into the swing hole 8, and therefore the circuit breaker 3 cannot be switched from a test position to a working position, and the safety of workers is guaranteed.
In this embodiment, as shown in fig. 6 and 7, when the cabinet door 2 is in a closed state, the cabinet door 2 extrudes the striker 12, so that the striker 12 drives the rotating shaft 10 which is in rotation-stop fit with the striker 12 to rotate, the rotating shaft 10 drives the limiting member 14 to move rightward to an unlocking position, the limiting member 14 releases the limiting on the swing-in hole blocking piece 6 so that the swing-in hole blocking piece 6 is in an unlocking state, at this time, the swing-in hole blocking piece 6 can be pulled down to open the swing-in hole, and the crank can be inserted into the swing-in hole 8 to swing the circuit breaker 3 from the test position to the working position. Only can shake into the circuit breaker under the condition that cabinet door 2 closed, perfect preventing in the five-prevention interlocking and miss electrified interval function, when preventing to be in cubical switchboard circuit breaker room door and being in the state of opening the door, the circuit breaker shakes into operating position and forms high-voltage circuit, and the staff mistake is gone into electrified circuit breaker room.
In this embodiment, as shown in fig. 8 to 14, the interlocking device 7 includes an interlocking base 9, the interlocking base 9 is provided with a mounting hole 91 for fixing the interlocking base on the breaker frame 5 and a limiting groove 92 for limiting the limiting member 14 from moving to the left excessively, in other embodiments, the interlocking base 9 may not be provided with the limiting groove 92, and a stop lever for limiting the limiting member to the left is provided between the interlocking device and the rock-in hole stop sheet; the interlocking base 9 is provided with a rotating shaft 10 in a vertical direction in a penetrating manner, the rotating shaft 10 is provided with a first square platform 101 and a second square platform 103, and an annular limiting groove 102 is arranged below the first square platform; the stop piece 13 is provided with a first square hole 131, the first square hole 131 is in rotation stopping fit with the first square platform 101 on the rotating shaft 10, one end of the stop piece 13, which is far away from the first square hole 131, is inserted into the insertion hole 141 of the stop piece 14 so that the stop piece 14 can move left and right along with the swinging of the stop piece 13, the stop piece 14 is further provided with a flanging 142, the flanging 142 limits the swinging hole baffle piece 6, the contact surface between the flanging 142 and the swinging hole baffle piece 6 is increased, and the stability of limiting the swinging hole baffle piece 6 is improved; a limiting ring 16 is arranged in the annular limiting groove 102 of the rotating shaft 10, and the limiting ring 16 is used for preventing the retainer 13 from sliding off the rotating shaft 10 and ensuring the swinging stability of the retainer 13; in this embodiment, the rotating shaft 10 is further provided with a torsion spring 15, and the torsion spring 15 is used for resetting the rotating shaft 10 when the cabinet door 2 is opened so as to move the limiting member to the left below the swing-in hole blocking piece 6 to limit the swing-in hole blocking piece 6.
In this embodiment, the second square hole 121 is formed in the striker 12, the second square hole 121 is in rotation-stopping fit with the second square platform 103 of the rotating shaft 10, the roller mounting hole 122 is formed in one end of the striker, which is away from the second square hole 121, the roller 11 is mounted on the roller mounting hole 122, the roller 11 is rotatably mounted on the striker 12 through the roller mounting hole 122, the outer peripheral surface of the roller 11 forms a pressed portion, the roller 11 can reduce the friction damage of the cabinet door 2 when the cabinet door 2 is pressed against the striker 12, meanwhile, the cabinet door 2 can be closed in a labor-saving manner, and the roller 11 and the striker 12 form an interlocking member.
During operation, when the cabinet door 2 is in an open state, the torsion spring 15 is in a free state, the stop piece 13 is in rotation stopping fit with the first square platform 101 of the rotating shaft 10 through the first square hole 131, and the stop piece 13 is positioned in the axial direction of the rotating shaft 10 by the limiting ring 16, at this time, no external force is applied on the stop piece 13 to overcome the acting force of the torsion spring 15, so that the stop piece 13 cannot drive the limit piece 14 to move rightwards, the limit of the limit piece 14 on the shake-in hole blocking piece 6 cannot be relieved, the shake-in hole blocking piece 6 cannot be pulled downwards, the crank of the circuit breaker 3 cannot be inserted into the shake-in hole 8, the circuit breaker cannot be switched from a test position to a working position, and the circuit breaker cannot be electrified; when the cabinet door 2 is in a closed state, the cabinet door 2 impacts the roller 11 and extrudes the roller 11 to drive the striker 12 to rotate anticlockwise in the closing process, the striker 12 is in rotation stopping fit with the second square table 103 of the rotating shaft 10 through the second square hole 121, a nut can be mounted above the second square table 103 to limit the striker 12 in the axial direction of the rotating shaft 10, so that the rotating shaft 10 rotates anticlockwise, the retainer 13 rotates along with the rotation, the retainer 13 pushes the retainer 14 to move rightwards again, the limiting of the retainer 14 on the swing hole catch 6 is relieved, the swing hole catch 6 on the circuit breaker can be pressed downwards and opened smoothly, and the circuit breaker can swing from a test position to a working position.
In the embodiment, the rotating shaft is firstly in rotation stopping fit with the stop piece, and then the stop piece is inserted into the jack of the stop piece to drive the stop piece to move left and right, in other embodiments, the stop piece can be a gear, the stop piece is a rack, the stop piece and the stop piece realize the left and right movement of the stop piece through the gear engagement, and a protrusion which is matched with the limit groove to limit the rack from excessively moving left is arranged on one side of the rack away from the stop piece; in the embodiment, the stop piece and the rotating shaft are in rotation stopping fit with the square table through square holes, in other embodiments, key grooves are formed in the stop piece and the rotating shaft, and the stop piece and the rotating shaft are in rotation stopping fit through keys; in other embodiments, the roller is not arranged on the plunger, and the end part of the plunger far away from the rotating shaft is a pressed part; in other embodiments, the limiting member may not be provided with a flange; in other embodiments, the stopper may be vertically limited by a torsion spring without providing a limiting groove.
Claims (5)
1. Electric appliance cabinet door operation interlock, including circuit breaker frame and the hole of shaking of setting on the circuit breaker frame, it is equipped with the hole separation blade of shaking on the hole to shake, its characterized in that: the circuit breaker frame is also provided with a rotating shaft extending along the vertical direction and a limiting part capable of moving left and right, the rotating shaft is rotatably matched with a stop piece capable of enabling the limiting part to move left and right, and a movable stroke of the limiting part is provided with a locking position for limiting a shaking hole blocking piece of a shaking hole in the circuit breaker frame to move up and down and an unlocking position for releasing the limiting part from limiting the shaking hole blocking piece; the rotating shaft is also matched with an interlocking part matched with the cabinet door in a rotation stopping way, the interlocking part is provided with a pressed part which drives the rotating shaft to rotate under the pressure when the cabinet door is closed so that the limiting part moves from the locking position to the unlocking position, the breaker frame is also provided with an elastic resetting part which provides the acting force for the limiting part to move from the unlocking position to the locking position, the limiting part is provided with a jack, the stopping part comprises a plug part matched with the jack, the elastic resetting part is a torsion spring sleeved on the rotating shaft, the interlocking part comprises a striker and a roller rotationally matched with the striker, the peripheral surface of the roller forms the pressed part, the interlocking device comprises an interlocking base, the rotating shaft penetrates through the interlocking base in the vertical direction, the rotating shaft is provided with a first square platform and a second square platform, the stopping part is provided with a first square hole, and the first square hole is matched with the first square platform on the rotating shaft in a rotation stopping way, the one end that first square hole was kept away from to the stopper inserts the jack of locating part so that the locating part can remove about along with the swing of stopper, and the torsional spring is used for making the pivot reset when the cabinet door is opened and carries on spacingly to shaking into the hole separation blade in order to move the locating part left side below of shaking into the hole separation blade, is equipped with second square hole on the lance, and second square hole and the second square platform of pivot are stopped to rotate the cooperation.
2. The appliance cabinet door operating interlock according to claim 1, wherein: and a flanging facing the breaker frame is arranged on the part, used for limiting the baffle of the shaking hole, of the limiting part.
3. The appliance cabinet door operating interlock according to claim 1, wherein: the rotating shaft is provided with a limiting groove, and a limiting ring for limiting the stopper up and down is arranged in the limiting groove.
4. The appliance cabinet door operating interlock according to claim 1, wherein: and the interlocking base is provided with a limiting groove for limiting the limiting part to move leftwards.
5. The appliance cabinet door operating interlock according to claim 4, wherein: the limiting groove limits the plug part to limit the limiting piece to move leftwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711228694.4A CN109841434B (en) | 2017-11-29 | 2017-11-29 | Operation interlocking device for electric appliance cabinet door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711228694.4A CN109841434B (en) | 2017-11-29 | 2017-11-29 | Operation interlocking device for electric appliance cabinet door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109841434A CN109841434A (en) | 2019-06-04 |
| CN109841434B true CN109841434B (en) | 2020-10-20 |
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ID=66882307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711228694.4A Active CN109841434B (en) | 2017-11-29 | 2017-11-29 | Operation interlocking device for electric appliance cabinet door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109841434B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752567B (en) * | 2019-10-29 | 2021-09-21 | 威腾电气集团股份有限公司 | Jack box with triple interlocking function |
| CN112696098B (en) * | 2020-12-15 | 2021-12-21 | 宁波生久科技有限公司 | Telescopic rotary unlocking device for power distribution cabinet |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6545859B2 (en) * | 2001-01-30 | 2003-04-08 | Eaton Corporation | Automatically operating interlock assembly for electrical cabinets |
| CN101692522B (en) * | 2009-08-25 | 2012-05-30 | 温州新机电器有限公司 | Interlocking device for earthing switch operation of switch cabinet |
| CN102543516B (en) * | 2012-01-10 | 2015-02-25 | 昆明东控电器成套设备有限公司 | Five-prevention system of high-voltage switch cabinet |
| CN106373805B (en) * | 2016-11-09 | 2019-07-23 | 南方电网科学研究院有限责任公司 | Door interlocking device for nitrogen switch cabinet |
| CN107069464A (en) * | 2017-06-06 | 2017-08-18 | 信阳师范学院 | Switch cubicle and its cabinet door interlock |
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2017
- 2017-11-29 CN CN201711228694.4A patent/CN109841434B/en active Active
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| CN109841434A (en) | 2019-06-04 |
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