CN214753443U - Locking structure of switch cabinet door, circuit breaker and isolating switch - Google Patents
Locking structure of switch cabinet door, circuit breaker and isolating switch Download PDFInfo
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- CN214753443U CN214753443U CN202121342819.8U CN202121342819U CN214753443U CN 214753443 U CN214753443 U CN 214753443U CN 202121342819 U CN202121342819 U CN 202121342819U CN 214753443 U CN214753443 U CN 214753443U
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Abstract
A locking structure of a switch cabinet door, a circuit breaker and an isolating switch comprises a cabinet body, wherein the cabinet body is provided with a front door and a rear door, and the circuit breaker and the isolating switch are installed in the cabinet body; the circuit breaker operating shaft is coaxially and fixedly connected with a pressing block, a vertical pressing rod is arranged below the pressing block, the isolating switch operating shaft is coaxially and fixedly connected with a swinging block, a swingable curved ruler-shaped connecting rod and a longitudinal sliding piece capable of longitudinally sliding are further arranged in the cabinet body, the swinging shaft of the curved ruler-shaped connecting rod is located in the middle of the curved ruler-shaped connecting rod, and the swinging shaft of the curved ruler-shaped connecting rod is transverse; a steel wire rope is connected between the swinging end of the swinging block and the first end of the curved-ruler-shaped connecting rod, and a front longitudinal inserting rod and a rear longitudinal inserting rod are also installed in the cabinet body; the front longitudinal insertion rod is fixedly connected with a front longitudinal rack, and the rear longitudinal insertion rod is fixedly connected with a rear longitudinal rack; the cabinet body is also provided with a gear; the gear is coaxially and fixedly connected with a second transmission swing arm; a swing pressure lever is also arranged. The utility model discloses after circuit breaker and isolator all close a floodgate, can not open qianmen, back door, above-mentioned shutting relation is reliable moreover.
Description
Technical Field
The utility model belongs to the technical field of power switch cabinet, concretely relates to cubical switchboard door and circuit breaker and isolator's shutting structure.
Background
The front door and the rear door are arranged in front of the high-voltage switch cabinet, and the breaker and the isolating switch are installed in the cabinet body. Because the circuit breaker has the arc extinguishing function and the isolating switch does not have the arc extinguishing function, according to the operating regulation, the isolating switch must be switched on first and then the circuit breaker is switched on when power is transmitted, and the circuit breaker must be switched off first and then the isolating switch is switched off when power is cut off.
In order to ensure the safety of operators and equipment, when the breaker and the isolating switch are both in a closing state, the front door and the rear door are strictly forbidden to be opened. To achieve this, various latching mechanisms have been devised, both mechanical and electronic. However, the locking control structure of the existing switch cabinet is not only complex in structure, but also poor in reliability of the interlocking relationship, so that the possibility of misoperation exists, and potential safety hazards are hidden.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming above-mentioned shortcoming and providing a cubical switchboard door and circuit breaker and isolator's shutting structure, it is all closed a floodgate back at circuit breaker and isolator, can not open qianmen, back door.
In order to achieve the purpose, the locking structure of the switch cabinet door, the circuit breaker and the isolating switch comprises a cabinet body, wherein the cabinet body is provided with a front door and a rear door, and the circuit breaker and the isolating switch are installed in the cabinet body; the breaker is provided with a breaker operating shaft, and the axial direction of the breaker operating shaft is transverse; when the circuit breaker operating shaft rotates to a switching-on position, the circuit breaker realizes switching-on; when the breaker operating shaft rotates to the opening position, the breaker realizes opening;
the isolator is equipped with static contact and moving contact, and the moving contact can be installed in the cabinet body with swinging, and the swing orbit of moving contact is including following two function positions: a moving contact of the isolating switch contacts a static contact at a first functional position, and the isolating switch is switched on; the moving contact of the isolating switch is separated from the static contact at the second functional position, and the isolating switch is switched off;
the isolating switch is provided with an isolating switch operating shaft, and the extending direction of the isolating switch operating shaft is longitudinal;
the isolating switch operating shaft is coaxially and fixedly connected with a first bevel gear, the first bevel gear is meshed with a second bevel gear, the axial direction of the second bevel gear is transverse, and the second bevel gear is coaxially and fixedly connected with a first transmission swing arm; the first transmission swing arm drives a moving contact connected with the isolating switch;
when the moving contact of the isolating switch is in a first functional position, the rotating position of the operating shaft of the isolating switch is called as a switching-on position; when the moving contact of the isolating switch is in a second functional position, the rotating position of the operating shaft of the isolating switch is called as a separating position;
the front door and the rear door are respectively provided with a lock plate capable of moving vertically and a handle capable of rotating, a transmission mechanism is arranged between the handle and the lock plate, and the handle swings to drive the lock plate to move vertically through the transmission mechanism; the lock plate is provided with a lock hole, the cabinet body is fixedly provided with a lock nail matched with the lock hole, the axial direction of the lock nail is longitudinal, the lock nail comprises a circular nail cap and a circular nail rod, and the diameter of the circular nail cap is larger than that of the circular nail rod; each lock hole comprises an upper part and a lower part, wherein one part is in a segmental shape and is called a lock hole segmental part, the other part is in a rectangular shape and is called a lock hole rectangular part, the diameter of the lock hole segmental part is larger than the diameter of a nail head of the lock nail, and the transverse width of the lock hole rectangular part is larger than the diameter of a nail rod of the lock nail and smaller than the diameter of the nail head of the lock nail;
the locking plate is provided with two functional positions in a vertical moving track, namely a locking position and an unlocking position; when the front door and the rear door are in the closed positions and the vertical position of the lock plate is in the locking position, the nail rod of the lock nail is positioned at the rectangular part of the lock hole, and the nail cap of the lock nail limits the longitudinal movement of the lock plate to lock the front door and the rear door;
when the front door and the rear door are in the closed positions and the vertical position of the lock plate is in the unlocking position, the nail rod of the lock nail is positioned at the circular segmental part of the lock hole, and the nail cap of the lock nail can not limit the longitudinal movement of the lock plate so that the front door and the rear door can be opened;
the circuit breaker is characterized in that a pressing block is coaxially and fixedly connected with an operating shaft of the circuit breaker, a vertical pressing rod is vertically and slidably mounted below the rear part of the pressing block, and a roller is mounted at the upper end of the vertical pressing rod and abuts against the lower surface of the rear part of the pressing block; a first return spring for applying upward thrust to the vertical compression bar is also arranged in the cabinet body;
the isolating switch operating shaft is coaxially and fixedly connected with a swing block, a curved ruler-shaped connecting rod capable of swinging and a longitudinal sliding piece capable of longitudinally sliding are further arranged in the cabinet body, the swing shaft of the curved ruler-shaped connecting rod is located in the middle of the cabinet body, and the swing shaft of the curved ruler-shaped connecting rod is transverse; a steel wire rope is connected between the swinging end of the swinging block and the first end of the curved-ruler-shaped connecting rod, a long hole is formed in the second end of the curved-ruler-shaped connecting rod, a transmission pin is arranged at the rear end of the longitudinal sliding piece, and the transmission pin is sleeved in the long hole;
the cabinet body can also be provided with a front longitudinal inserted bar and a rear longitudinal inserted bar in a longitudinal sliding way; the transverse position of the front longitudinal inserted rod is flush with the transverse position of the lock hole of the front door lock plate, and the transverse position of the rear longitudinal inserted rod is flush with the transverse position of the lock hole of the rear door lock plate;
when the lock plate of the front door is in a locking position, the vertical position of the lock hole segmental part of the lock plate of the front door is aligned with the front end of the front longitudinal inserted bar; when the lock pin of the rear door is in a locking position, the vertical position of the lock hole segmental part of the rear door lock plate is aligned with the rear end of the rear longitudinal inserted rod;
the front longitudinal insertion rod is fixedly connected with a front longitudinal rack, and the rear longitudinal insertion rod is fixedly connected with a rear longitudinal rack; the cabinet body is also provided with a gear, the front longitudinal rack is engaged with the upper side of the gear, and the rear longitudinal rack is engaged with the lower side of the gear;
the gear is coaxially and fixedly connected with a second transmission swing arm; the swing end of the second transmission swing arm is positioned on the front side of the gear; a second reset spring which applies upward tension to the swinging end of the second transmission swing arm is also arranged in the cabinet body;
the cabinet body is also provided with a third return spring which applies backward pulling force to the upper end of the transmission swing rod, and the elasticity of the third return spring enables the upper end of the transmission swing rod to be kept attached to the front end of the longitudinal sliding piece;
when the isolating switch operating shaft rotates to a switch-on position, the first end of the curved-ruler-shaped connecting rod is pulled to the highest point of the swinging track of the oscillating block through the steel wire rope by the oscillating block, the longitudinal sliding piece is pushed to the foremost end of the longitudinal moving track of the curved-ruler-shaped connecting rod by the second end of the curved-ruler-shaped connecting rod, the upper end of the transmission oscillating bar is pushed to the foremost end of the swinging track of the longitudinal sliding piece by the longitudinal sliding piece, the transmission oscillating bar is in a vertical state, and the upper end of the transmission oscillating bar is just positioned under the lower end of the first vertical pressure rod;
when the front door and the rear door are in a closed position, the lock plates of the front door and the rear door are in a locked position, the upper ends of the transmission swing rods are located under the lower ends of the vertical pressure rods, and the breaker operating shaft rotates to a switching-on position, the press blocks overcome the elastic force of the first reset spring through the rollers to push the vertical pressure rods to the lowest points of the vertical moving tracks of the press blocks, the vertical pressure rods press the swinging ends of the second transmission swing arms to the lowest points of the swinging tracks of the second transmission swing arms through the transmission swing rods, the second transmission swing arms push the first rack and the front longitudinal insertion rod to the foremost ends of the longitudinal moving tracks through the gears, the front ends of the front longitudinal insertion rods are inserted into the circular-segment-shaped parts of the lock plates of the front door, meanwhile, the second transmission swing arms push the second rack and the rear longitudinal insertion rod to the rearmost ends of the longitudinal moving tracks through the gears, and the rear ends of the rear longitudinal insertion rods are inserted into the circular-segment-shaped parts of the lock plates of the rear door.
Preferably, a connecting rod is connected between the first transmission swing arm and the moving contact of the isolating switch, and the first transmission swing arm, the connecting rod and the moving contact of the isolating switch form a double-rocker mechanism.
The upper end surface of the transmission swing rod is provided with a concave part for embedding the lower end of the first vertical compression bar.
The utility model has the advantages of it is following and effect:
the front door and the rear door can not be opened, and the front door and the rear door can not be opened completely under the condition of electrification in a cabinet.
And secondly, the front door and the rear door can be opened only under the condition that the breaker is opened.
In addition, the utility model discloses an above-mentioned shutting relation is reliable.
Drawings
Fig. 1 is the utility model discloses embodiment is when circuit breaker combined floodgate and isolator combined floodgate horizontal projection structure sketch map.
Fig. 2 is a partially enlarged schematic view of the structure shown in fig. 1.
Fig. 3 is a schematic longitudinal projection structure of the actuating lever and its related components in the state shown in fig. 1.
Fig. 4 is another enlarged partial schematic view of the structure shown in fig. 1.
Fig. 5 is a partially enlarged schematic view of the structure shown in fig. 4.
Fig. 6 is another enlarged partial schematic view of the structure shown in fig. 4.
Fig. 7 is a schematic view of a rear door control structure in the state shown in fig. 1.
Fig. 8 is a schematic view of the front door control structure in the state shown in fig. 1.
Fig. 9 is a partially enlarged schematic view of the structure shown in fig. 8.
Fig. 10 is a partially enlarged schematic view of the structure shown in fig. 7.
Fig. 11 is a schematic diagram of the relationship between the longitudinal projection positions of the front (rear) longitudinal insertion rod and the front (rear) door lock plate when the circuit breaker is closed and the disconnector is closed.
Fig. 12 is a schematic view of the shape of the locking plate locking hole.
Fig. 13 is a schematic diagram of a horizontal projection structure of an embodiment of the present invention when the circuit breaker is opened and the disconnecting switch is opened.
Fig. 14 is a partially enlarged schematic view of the structure shown in fig. 13.
Fig. 15 is a longitudinal projection structure diagram of a curved connecting rod and its related parts in the state shown in fig. 13.
Fig. 16 is another partially enlarged schematic view of the state shown in fig. 13.
Fig. 17 is a schematic view of a rear door control structure in the state shown in fig. 13.
Fig. 18 is a schematic view of the front door control structure in the state shown in fig. 13.
Fig. 19 is a partially enlarged schematic view of the structure shown in fig. 18.
Fig. 20 is a partially enlarged schematic view of the structure shown in fig. 17.
Fig. 21 is a schematic view of a state in which the rear door lock plate is moved down to the unlock position.
Fig. 22 is a schematic view of the front door-lock plate moving downward to the unlock position.
Fig. 23 is a schematic view showing a relationship between the front (rear) door lock plate and the longitudinal projection positions of the lock pin and the front (rear) longitudinal insertion rod when the front (rear) door lock plate is moved downward to the unlock position.
Detailed Description
The locking structure of the switch cabinet door, the circuit breaker and the disconnecting switch shown in fig. 1 and 2 comprises a cabinet body 8, wherein the cabinet body 8 is provided with a front door 81 and a rear door 82, and the circuit breaker and the disconnecting switch are installed in the cabinet body 8; the breaker is provided with a breaker operating shaft 1, and the axial direction of the breaker operating shaft 1 is transverse; when the circuit breaker operating shaft 1 rotates to a switching-on position, the circuit breaker realizes switching-on; when the breaker operating shaft 1 rotates to the opening position, the breaker realizes opening; the isolating switch is provided with a static contact 91 and a moving contact 92, the moving contact 92 can be installed in the cabinet body in a swinging manner, and the swinging track of the moving contact 92 comprises the following two functional positions: a moving contact 92 of the isolating switch contacts a fixed contact 91 at a first functional position, and the isolating switch is switched on; in the second functional position, the moving contact 92 of the isolating switch is separated from the fixed contact 91, and the isolating switch is switched off; the isolating switch is provided with an isolating switch operating shaft 9, and the extending direction of the isolating switch operating shaft 9 is longitudinal; the isolating switch operating shaft 9 is coaxially and fixedly connected with a first bevel gear 11, the first bevel gear 1 is meshed with a second bevel gear 21, the axial direction of the second bevel gear 21 is transverse, and the second bevel gear 21 is coaxially and fixedly connected with a first transmission swing arm 12; the first transmission swing arm 12 drives a moving contact 92 connected with the isolating switch; a connecting rod 93 is connected between the first transmission swing arm 12 and the movable contact 92 of the isolating switch, and the first transmission swing arm 12, the connecting rod 93 and the movable contact 92 of the isolating switch form a double-rocker mechanism. Thus, when the disconnecting switch operating shaft 9 rotates, the first bevel gear 11, the second bevel gear 21 and the first transmission swing arm 12 are driven to rotate, and the first transmission swing arm 12 pushes the movable contact 92 to swing through the connecting rod 93; when the movable contact 92 of the disconnector is in the first functional position, the rotary position of the operating shaft 9 of the disconnector is referred to as the on-position; when the movable contact 92 of the disconnector is in the second functional position, the rotary position of the operating shaft 9 of the disconnector is referred to as the disconnecting position;
as shown in fig. 1, 7, 8, 9, 10, and 11, the front door 81 and the rear door 82 are respectively provided with a lock plate 84 capable of moving vertically and a handle 80 capable of rotating, a transmission mechanism 86 is provided between the handle 80 and the lock plate 84, and the swing of the handle 80 drives the lock plate 84 to move vertically through the transmission mechanism 86;
as shown in fig. 9, 10, 11 and 12, the locking plate 84 is provided with a locking hole 85, the cabinet 8 is fixedly provided with a locking nail 83 which is matched with the locking hole 85, the axial direction of the locking nail 83 is longitudinal, the locking nail 83 comprises a circular nail cap 832 and a circular nail rod 831, and the diameter of the circular nail cap 832 is larger than that of the circular nail rod 831; each lock hole 85 comprises an upper part and a lower part, wherein the upper part is in a segmental shape and is called a lock hole segmental part 852, the lower part is in a rectangular shape and is called a lock hole rectangular part 851, the diameter of the lock hole segmental part 852 is larger than the diameter of the nail cap 832 of the lock nail, and the transverse width of the lock hole rectangular part 851 is larger than the diameter of the nail stem 831 of the lock nail and is smaller than the diameter of the nail cap 832 of the lock nail;
the lock plate 84 is formed with two functional positions in the vertical movement trajectory, namely a locked position and an unlocked position; when the front door and the rear door are in the closed position and the vertical position of the lock plate 94 is in the locking position, the nail stem 831 of the lock nail is located at the lock hole rectangular part 851, and the nail cap 832 of the lock nail restricts the longitudinal movement of the lock plate 84 to lock the front door 81 and the rear door 82, as shown in fig. 9, 10 and 11;
when the front door 81 and the rear door 82 are in the closed position and the vertical position of the lock plate 84 is in the unlocking position, the nail stem 831 of the lock nail is located in the keyhole circular segment-shaped portion 852, and since the diameter of the keyhole circular segment-shaped portion 852 is larger than that of the nail cap 831 of the lock nail, the nail cap 831 of the lock nail cannot limit the longitudinal movement of the lock plate 84 so that the front door 81 and the rear door 82 can be opened, as shown in fig. 21, 22 and 23;
as shown in fig. 1 and 4, a pressing block 13 is coaxially and fixedly connected to a circuit breaker operating shaft 1, the pressing block 13 rotates synchronously with the circuit breaker operating shaft 1, a vertical pressing rod 14 is vertically slidably mounted below the rear portion of the pressing block 13, a roller 15 is mounted at the upper end of the vertical pressing rod 14, and the roller 15 abuts against the lower surface of the rear portion of the pressing block 13; the cabinet body 8 is also internally provided with a first return spring 61 which applies upward thrust to the vertical pressure lever 14;
as shown in fig. 1, 2 and 3, the disconnecting switch operating shaft 9 is coaxially and fixedly connected with a swing block 23, the swing block 23 rotates synchronously with the disconnecting switch operating shaft 9, the cabinet body is also provided with a curved-ruler-shaped connecting rod 5 capable of swinging and a longitudinal sliding piece 6 capable of longitudinally sliding, a swing shaft 50 of the curved-ruler-shaped connecting rod 5 is positioned in the middle of the cabinet body, and the swing shaft 50 of the curved-ruler-shaped connecting rod is transverse; a steel wire rope 4 is connected between the swinging end of the swinging block 23 and the first end of the curved-ruler-shaped connecting rod 5, a long hole 27 is formed in the second end of the curved-ruler-shaped connecting rod, a transmission pin 6 is arranged at the rear end of the longitudinal sliding piece, and a transmission pin 26 is sleeved in the long hole 27 in the second end of the curved-ruler-shaped connecting rod;
as shown in fig. 1, 4 and 6, a front longitudinal insert rod 18 and a rear longitudinal insert rod 28 are also mounted in the cabinet 8 in a longitudinally slidable manner; the transverse position of the front longitudinal insert rod 18 is flush with the transverse position of the lock hole 85 of the lock plate 84 of the front door, and the transverse position of the rear longitudinal insert rod 28 is flush with the transverse position of the lock hole 85 of the lock plate of the rear door;
when the lock plate 84 of the front door 81 is in the locked position, the vertical position of the lock hole segment 852 of the front door lock plate is aligned with the front end of the front longitudinal insert bar 18; when the lock pin 84 of the rear door 82 is in the locked position, the vertical position of the keyhole cutout 85 of the rear door latch plate is aligned with the rear end of the rear longitudinal insert bar 28, as shown in fig. 9, 10, 11;
as shown in fig. 1, 4 and 6, the front longitudinal insertion rod 18 is fixedly connected with a front longitudinal rack 19, and the rear longitudinal insertion rod 28 is fixedly connected with a rear longitudinal rack 29; the cabinet body 8 is also provided with a gear 39, the front longitudinal rack 19 is engaged with the upper side of the gear 39, and the rear longitudinal rack 29 is engaged with the lower side of the gear 39;
as shown in fig. 1, 4 and 6, the gear 39 is coaxially and fixedly connected with the second transmission swing arm 22, and the two move synchronously around the central axis of the gear 39; the swing end of the second transmission swing arm 22 is positioned at the front side of the gear 39; a second return spring 62 for applying an upward pulling force to the swinging end of the second transmission swinging arm 22 is further arranged in the cabinet body, as shown in fig. 4 and 5;
as shown in fig. 1, 4, 5 and 12, a transmission swing rod 7 is further provided, a lower end of the transmission swing rod 7 is hinged to a swing end of the second transmission swing arm 22 by using a hinge shaft 70, an axial direction of the hinge shaft 70 is a transverse direction, a third return spring 63 for applying a backward pulling force to an upper end of the transmission swing rod 7 is further provided in the cabinet, and an elastic force of the third return spring 63 keeps the upper end of the transmission swing rod 7 against a front end of the longitudinal sliding member 6; the upper end surface of the transmission swing rod 7 is provided with a concave part 71 for embedding the lower end of the first vertical compression bar 14.
The components form the following matching relationship:
when the disconnecting switch operating shaft 9 rotates to a switching-on position, the swing block 23 pulls the first end of the curved-ruler-shaped connecting rod 5 to the highest point of the swing track of the curved-ruler-shaped connecting rod through the steel wire rope 4, the second end of the curved-ruler-shaped connecting rod 5 pushes the longitudinal sliding piece 6 to the foremost end of the longitudinal moving track of the curved-ruler-shaped connecting rod, the longitudinal sliding piece 6 pushes the upper end of the transmission swing rod 7 to the foremost end of the swing track of the longitudinal sliding piece, so that the transmission swing rod 7 is in a vertical state, and the upper end of the transmission swing rod 7 is just positioned right below the lower end of the first vertical compression rod 14, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6;
when the front door 81 and the rear door 82 are in the closed position, the lock plates 84 of the front door and the rear door are in the locked position, the upper ends of the transmission swing rods 7 are positioned right below the lower ends of the vertical press rods 14, and the breaker operating shaft 1 rotates to the switching-on position, the press block 13 pushes the vertical press rods 14 to the lowest points of the vertical moving tracks thereof through the rollers 15 against the elastic force of the first return spring 61, the vertical press rods 14 push the swing ends of the second transmission swing arms 22 to the lowest points of the swing tracks thereof through the transmission swing rods 7, the second transmission swing arms 22 push the first rack 19 and the front longitudinal insertion rods 18 to the foremost ends of the longitudinal moving tracks thereof through the gears 39, the front ends of the front longitudinal insertion rods 18 are inserted into the circular notch parts 852 of the lock plates 84 of the front door, simultaneously the second transmission swing arms 22 push the second rack 29 and the rear longitudinal insertion rods 28 to the rearmost ends of the longitudinal moving tracks thereof through the gears 39, the rear ends of the rear longitudinal insertion rods 28 are inserted into the circular notch parts 852 of the lock plates of the rear door, as shown in fig. 4, 5, 6, 7, 8, 9, 10, and 11.
The locking principle of the above embodiment is as follows:
(1) when ready to power transmission, the front door 81 and the rear door 82 are in the closed position, and the lock plates 84 of the front door 81 and the rear door 82 are in the locked position;
(2) when the power is normally supplied, the isolating switch is switched on, the isolating switch operating shaft 9 rotates to the switching-on position, and the concave part 71 at the upper end of the transmission swing rod 7 is just positioned right below the lower end of the first vertical compression bar 14; then the circuit breaker is closed, the circuit breaker operating shaft 1 rotates to the closing position, the lower end of the vertical pressure rod 14 is embedded into the concave part 71 at the upper end of the transmission swing rod 7 and then the transmission swing rod 7 is continuously pushed downwards, so that the front end of the front longitudinal insertion rod 18 is inserted into the lock hole circular-segment-shaped part 852 of the lock plate 84 of the front door, the rear end of the rear longitudinal insertion rod 28 is inserted into the lock hole circular-segment-shaped part 852 of the lock plate of the rear door, the lock plate 84 of the front door is limited to the locking position and cannot move vertically, the lock hole rectangular part 851 of the lock plate 84 is fixedly sleeved outside the lock nail 831 of the cabinet body, the horizontal width of the lock hole rectangular part 851 is smaller than the diameter of the nail cap 832 of the lock nail, the nail cap 832 of the lock nail limits the lock nail, the lock plate 84 of the rear door to lock the front door and the rear door, therefore the front door 81 and the rear door 82 can not be opened, and the situation that the front door 81, the rear door 82 can not be opened under the condition that the cabinet body is electrified is avoided, A rear door 82, as shown in fig. 1-11;
(3) when power needs to be cut off, the breaker is opened, the breaker operating shaft 1 rotates to the opening position, the pressing block 13 moves upwards at the contact position with the roller 15, the elastic force of the first return spring 61 pushes the vertical pressing rod 14 to the highest point of the vertical moving track of the vertical pressing rod, the lower end of the vertical pressing rod 14 is separated from the concave part 71 at the upper end of the transmission swing rod 7, and the vertical distance is generated between the vertical pressing rod 14 and the concave part 71; then, the disconnecting switch operating shaft 9 is rotated to a brake separating position, the swinging end of the swinging block 23 moves downwards, so that the tension of the steel wire rope 4 is lost, namely the effective tension on the first end of the curved-ruler-shaped connecting rod 5 is lost, then under the elastic action of the third return spring 63, the upper end of the transmission swinging rod 7 swings backwards to push the longitudinal sliding piece 6 to move the rearmost end of the longitudinal moving track, the longitudinal sliding piece 6 pushes the second end of the curved-ruler-shaped connecting rod 5 to swing backwards, and the first end of the curved-ruler-shaped connecting rod 5 swings downwards; on the other hand, under the action of the elastic force of the second return spring 62, the swing end of the second driving swing arm 22 moves to the highest point of the swing track, the second driving swing arm 22 pushes the first rack 19 and the front longitudinal insertion rod 18 to the rearmost end of the longitudinal movement track through the gear 39, the front end of the front longitudinal insertion rod 18 disengages from the keyhole circular notch 852 of the front door lock plate 84, meanwhile, the second driving swing arm 22 pushes the second rack 29 and the rear longitudinal insertion rod 28 to the foremost end of the longitudinal movement track through the gear 39, and the rear end of the rear longitudinal insertion rod 28 disengages from the keyhole circular notch 852 of the rear door lock plate, as shown in fig. 12, 13, 14, 15, 16, 17 and 18;
(4) after that, as long as the handle 80 is rotated, the front door lock plate 84 and the rear door lock plate 84 are moved downward to the unlocking position, and the lock hole circular segment 852 of the front door lock plate 84 and the lock hole circular segment 852 of the rear door lock plate 84 are respectively aligned with the lock nails 83 of the cabinet, since the diameter of the lock hole circular segment 852 is larger than the diameter of the nail cap 832 of the lock nail, the lock plates 84 can move longitudinally, that is, the front door 81 and the rear door 82 can be opened.
Claims (3)
1. A locking structure of a switch cabinet door, a circuit breaker and an isolating switch comprises a cabinet body, wherein the cabinet body is provided with a front door and a rear door, and the circuit breaker and the isolating switch are installed in the cabinet body; the breaker is provided with a breaker operating shaft, and the axial direction of the breaker operating shaft is transverse; when the circuit breaker operating shaft rotates to a switching-on position, the circuit breaker realizes switching-on; when the breaker operating shaft rotates to the opening position, the breaker realizes opening;
the isolator is equipped with static contact and moving contact, and the moving contact can be installed in the cabinet body with swinging, and the swing orbit of moving contact is including following two function positions: a moving contact of the isolating switch contacts a static contact at a first functional position, and the isolating switch is switched on; the moving contact of the isolating switch is separated from the static contact at the second functional position, and the isolating switch is switched off;
the isolating switch is provided with an isolating switch operating shaft, and the extending direction of the isolating switch operating shaft is longitudinal;
the isolating switch operating shaft is coaxially and fixedly connected with a first bevel gear, the first bevel gear is meshed with a second bevel gear, the axial direction of the second bevel gear is transverse, and the second bevel gear is coaxially and fixedly connected with a first transmission swing arm; the first transmission swing arm drives a moving contact connected with the isolating switch;
when the moving contact of the isolating switch is in a first functional position, the rotating position of the operating shaft of the isolating switch is called as a switching-on position; when the moving contact of the isolating switch is in a second functional position, the rotating position of the operating shaft of the isolating switch is called as a separating position;
the front door and the rear door are respectively provided with a lock plate capable of moving vertically and a handle capable of rotating, a transmission mechanism is arranged between the handle and the lock plate, and the handle swings to drive the lock plate to move vertically through the transmission mechanism; the lock plate is provided with a lock hole, the cabinet body is fixedly provided with a lock nail matched with the lock hole, the axial direction of the lock nail is longitudinal, the lock nail comprises a circular nail cap and a circular nail rod, and the diameter of the circular nail cap is larger than that of the circular nail rod; each lock hole comprises an upper part and a lower part, wherein one part is in a segmental shape and is called a lock hole segmental part, the other part is in a rectangular shape and is called a lock hole rectangular part, the diameter of the lock hole segmental part is larger than the diameter of a nail head of the lock nail, and the transverse width of the lock hole rectangular part is larger than the diameter of a nail rod of the lock nail and smaller than the diameter of the nail head of the lock nail;
the locking plate is provided with two functional positions in a vertical moving track, namely a locking position and an unlocking position; when the front door and the rear door are in the closed positions and the vertical position of the lock plate is in the locking position, the nail rod of the lock nail is positioned at the rectangular part of the lock hole, and the nail cap of the lock nail limits the longitudinal movement of the lock plate to lock the front door and the rear door; when the front door and the rear door are in the closed positions and the vertical position of the lock plate is in the unlocking position, the nail rod of the lock nail is positioned at the circular segmental part of the lock hole, and the nail cap of the lock nail can not limit the longitudinal movement of the lock plate so that the front door and the rear door can be opened;
the circuit breaker is characterized in that a pressing block is coaxially and fixedly connected with an operating shaft of the circuit breaker, a vertical pressing rod is vertically and slidably arranged below the rear part of the pressing block, and a roller is arranged at the upper end of the vertical pressing rod and abuts against the lower surface of the rear part of the pressing block; a first return spring for applying upward thrust to the vertical compression bar is also arranged in the cabinet body;
the isolating switch operating shaft is coaxially and fixedly connected with a swing block, a curved ruler-shaped connecting rod capable of swinging and a longitudinal sliding piece capable of longitudinally sliding are further arranged in the cabinet body, the swing shaft of the curved ruler-shaped connecting rod is located in the middle of the cabinet body, and the swing shaft of the curved ruler-shaped connecting rod is transverse; a steel wire rope is connected between the swinging end of the swinging block and the first end of the curved-ruler-shaped connecting rod, a long hole is formed in the second end of the curved-ruler-shaped connecting rod, a transmission pin is arranged at the rear end of the longitudinal sliding piece, and the transmission pin is sleeved in the long hole in the second end of the curved-ruler-shaped connecting rod;
the cabinet body can also be provided with a front longitudinal inserted bar and a rear longitudinal inserted bar in a longitudinal sliding way; the transverse position of the front longitudinal inserted rod is flush with the transverse position of the lock hole of the front door lock plate, and the transverse position of the rear longitudinal inserted rod is flush with the transverse position of the lock hole of the rear door lock plate;
when the lock plate of the front door is in a locking position, the vertical position of the lock hole segmental part of the lock plate of the front door is aligned with the front end of the front longitudinal inserted bar; when the lock pin of the rear door is in a locking position, the vertical position of the lock hole segmental part of the rear door lock plate is aligned with the rear end of the rear longitudinal inserted rod;
the front longitudinal insertion rod is fixedly connected with a front longitudinal rack, and the rear longitudinal insertion rod is fixedly connected with a rear longitudinal rack; the cabinet body is also provided with a gear, the front longitudinal rack is engaged with the upper side of the gear, and the rear longitudinal rack is engaged with the lower side of the gear;
the gear is coaxially and fixedly connected with a second transmission swing arm; the swing end of the second transmission swing arm is positioned on the front side of the gear; a second reset spring which applies upward tension to the swinging end of the second transmission swing arm is also arranged in the cabinet body;
the cabinet body is also provided with a third return spring which applies backward pulling force to the upper end of the transmission swing rod, and the elasticity of the third return spring enables the upper end of the transmission swing rod to be kept attached to the front end of the longitudinal sliding piece;
when the isolating switch operating shaft rotates to a switch-on position, the first end of the curved-ruler-shaped connecting rod is pulled to the highest point of the swinging track of the oscillating block through the steel wire rope by the oscillating block, the longitudinal sliding piece is pushed to the foremost end of the longitudinal moving track of the curved-ruler-shaped connecting rod by the second end of the curved-ruler-shaped connecting rod, the upper end of the transmission oscillating bar is pushed to the foremost end of the swinging track of the longitudinal sliding piece by the longitudinal sliding piece, the transmission oscillating bar is in a vertical state, and the upper end of the transmission oscillating bar is just positioned under the lower end of the first vertical pressure rod;
when the front door and the rear door are in a closed position, the lock plates of the front door and the rear door are in a locked position, the upper ends of the transmission swing rods are located under the lower ends of the vertical pressure rods, and the breaker operating shaft rotates to a switching-on position, the press blocks overcome the elastic force of the first reset spring through the rollers to push the vertical pressure rods to the lowest points of the vertical moving tracks of the press blocks, the vertical pressure rods press the swinging ends of the second transmission swing arms to the lowest points of the swinging tracks of the second transmission swing arms through the transmission swing rods, the second transmission swing arms push the first rack and the front longitudinal insertion rod to the foremost ends of the longitudinal moving tracks through the gears, the front ends of the front longitudinal insertion rods are inserted into the circular-segment-shaped parts of the lock plates of the front door, meanwhile, the second transmission swing arms push the second rack and the rear longitudinal insertion rod to the rearmost ends of the longitudinal moving tracks through the gears, and the rear ends of the rear longitudinal insertion rods are inserted into the circular-segment-shaped parts of the lock plates of the rear door.
2. The locking structure of the switch cabinet door, the circuit breaker and the isolating switch according to claim 1, characterized in that: a connecting rod is connected between the first transmission swing arm and the moving contact of the isolating switch, and the first transmission swing arm, the connecting rod and the moving contact of the isolating switch form a double-rocker mechanism.
3. The locking structure of the switch cabinet door, the circuit breaker and the isolating switch according to claim 1, characterized in that: the upper end surface of the transmission swing rod is provided with a concave part for embedding the lower end of the first vertical compression bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121342819.8U CN214753443U (en) | 2021-06-17 | 2021-06-17 | Locking structure of switch cabinet door, circuit breaker and isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121342819.8U CN214753443U (en) | 2021-06-17 | 2021-06-17 | Locking structure of switch cabinet door, circuit breaker and isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214753443U true CN214753443U (en) | 2021-11-16 |
Family
ID=78630024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121342819.8U Active CN214753443U (en) | 2021-06-17 | 2021-06-17 | Locking structure of switch cabinet door, circuit breaker and isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214753443U (en) |
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2021
- 2021-06-17 CN CN202121342819.8U patent/CN214753443U/en active Active
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