CN213150614U - Front and rear door and grounding switch locking structure of switch cabinet - Google Patents
Front and rear door and grounding switch locking structure of switch cabinet Download PDFInfo
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- CN213150614U CN213150614U CN202021986171.3U CN202021986171U CN213150614U CN 213150614 U CN213150614 U CN 213150614U CN 202021986171 U CN202021986171 U CN 202021986171U CN 213150614 U CN213150614 U CN 213150614U
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Abstract
A front door, a rear door and a grounding switch locking structure of a switch cabinet comprises a cabinet body, wherein the cabinet body is provided with a front door and a rear door, and a grounding switch and a circuit breaker are installed in the cabinet body; an interlocking control component is also arranged; the interlocking control assembly comprises a cam, a roller, a circular transverse interlocking rod, an interlocking rod outer sleeve, an interlocking block, a front baffle and a rear baffle; the cam is fixedly connected with the grounding switch operating shaft and rotates along with the grounding switch operating shaft; the transverse interlocking rod is arranged in the interlocking rod outer sleeve, the interlocking block is positioned on the outer side of the interlocking rod outer sleeve, the interlocking block is provided with a circular transverse through hole, the circumferential side surface of the roller abuts against the cam surface of the cam, the inner end of the transverse interlocking rod is fixedly connected with the roller, and the transverse interlocking rod and the roller synchronously and transversely move; the front baffle and the rear baffle can be vertically and slidably arranged on the inner sides of the interlocking blocks, the rear edge of the front baffle is provided with a semicircular notch, and the front edge of the rear baffle is provided with a semicircular notch. The utility model discloses an interlocking relation reliability is high.
Description
Technical Field
The utility model belongs to the technical field of power switch cabinet, concretely relates to front and back door of cubical switchboard and earthing switch shutting structure.
Background
The front door and the rear door are arranged in front of the high-voltage switch cabinet, and the grounding switch is installed in the cabinet body. In order to ensure the safety of the operating personnel and the equipment, the high-voltage switch cabinet must form the following locking relationship: firstly, under the condition that a front door or/and a rear door is opened, the grounding switch is ensured to be kept in a closing state, the cable chamber door is prevented from losing grounding protection suddenly in the overhauling process, and the safety of personnel entering the cabinet is ensured.
To achieve this, various latching mechanisms have been devised, both mechanical and electronic. However, the existing locking control structure of the high-voltage switch cabinet is complex in structure, especially cannot control a front door and a rear door in the same locking mechanism in a unified manner, and has poor reliability of the interlocking relationship, the possibility of misoperation exists, and great potential safety hazards are hidden.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming above-mentioned shortcoming and providing a cubical switchboard front and back door and earthing switch shutting structure, its linkage reliability is high.
In order to achieve the purpose, the utility model discloses a front and rear door and earthing switch locking structure of a switch cabinet, which comprises a cabinet body, wherein the cabinet body is provided with a front door and a rear door, and an earthing switch and a circuit breaker are arranged in the cabinet body; the grounding switch is provided with a grounding switch static contact and a grounding switch moving contact, the grounding switch moving contact can be rotatably arranged in the cabinet body, and the rotating shaft direction of the grounding switch moving contact is transverse; the grounding switch is provided with a grounding switch operating shaft, the extension direction of the grounding switch operating shaft is longitudinal, and the grounding switch operating shaft is in driving connection with a grounding switch moving contact; when the grounding switch operating shaft rotates to a switching-on position, the moving contact of the grounding switch rotates to a position contacting the static contact of the grounding switch, and the grounding switch is switched on; when the grounding switch operating shaft rotates to the opening position, the moving contact of the grounding switch rotates to a position away from the static contact of the grounding switch, and the grounding switch operating shaft opens;
it is characterized in that an interlocking control component is also arranged; the interlocking control assembly comprises a cam, a roller, a circular transverse interlocking rod, an interlocking rod outer sleeve, an interlocking block, a front baffle and a rear baffle; the cam is fixedly connected with the grounding switch operating shaft and rotates along with the grounding switch operating shaft; the transverse interlocking rod can be transversely and slidably arranged in the interlocking rod outer sleeve, and a horizontal return spring for applying elastic force in the inner side direction to the transverse interlocking rod is also arranged; the interlocking block is positioned on the outer side of the interlocking rod outer sleeve, a circular transverse through hole is formed in the interlocking block, and the central axis of the transverse through hole and the central axis of the transverse interlocking rod are positioned on the same straight line; the circumferential side surface of the roller is pressed against the cam surface of the cam, the inner end of the transverse interlocking rod is fixedly connected with the roller, and the transverse interlocking rod and the roller synchronously move transversely;
the front baffle and the rear baffle are vertically and slidably arranged on the inner side of the interlocking block, the transverse positions of the front baffle and the rear baffle are flush, the rear edge of the front baffle is adjacent to the front edge of the rear baffle, and the transverse positions of the front baffle and the rear baffle are positioned on the outer side of the interlocking rod outer sleeve;
the rear edge of the front baffle is provided with a semicircular notch, the front edge of the rear baffle is also provided with a semicircular notch, when the front baffle and the rear baffle both move downwards to the lowest point of the vertical movement track, the two semicircular notches form an interlocking circular hole, and the interlocking circular hole is aligned to the transverse through hole of the interlocking block;
the cam surface of the cam is provided with a high-section part and a low-section part, and the distance between the high-section part and the center line of the cam rotating shaft is greater than the distance between the low-section part and the center line of the cam rotating shaft;
when the earthing switch operating shaft rotates to the switching-on position, the lower section part of the cam contacts with the roller, and the transverse position of the outer end point of the transverse interlocking rod is positioned on the inner sides of the front baffle and the rear baffle;
when the grounding switch operating shaft rotates to the opening position, the high section part of the cam contacts with the roller, and the transverse position of the outer end point of the transverse interlocking rod is positioned on the outer sides of the front baffle and the rear baffle;
the first vertical return spring is used for applying upward elastic force to the front baffle, and the second vertical return spring is used for applying upward elastic force to the rear baffle;
a first vertical transmission rod is connected below the front baffle and can synchronously and vertically slide with the front baffle, a first curved ruler-shaped connecting rod is connected to the lower end of the first vertical transmission rod and can be rotatably installed on the cabinet body, the rotating shaft of the first curved ruler-shaped connecting rod is located in the middle of the first curved ruler-shaped connecting rod, a first transmission pin is arranged at the lower end of the first vertical transmission rod, a first long hole is formed in the first end of the first curved ruler-shaped connecting rod and is inserted into the first long hole, a first horizontal transmission rod is connected to the second end of the first curved ruler-shaped connecting rod and can be longitudinally slidably installed on the cabinet body, a second long hole is formed in the second end of the first curved ruler-shaped connecting rod, a second transmission pin is arranged at the rear end of the first horizontal transmission rod and is inserted into the second long hole, and the front end of the first horizontal transmission rod is close to the front door; in the closing process of the front door, the front door pushes the first horizontal transmission rod to move backwards, the first horizontal transmission rod drives the first curved-ruler-shaped connecting rod to rotate anticlockwise, and the first curved-ruler-shaped connecting rod pulls the front baffle downwards through the first vertical transmission rod; after the front door is closed, the first vertical transmission rod reaches the lowest point of the vertical moving track;
a second vertical transmission rod is connected below the rear baffle and vertically slides synchronously with the rear baffle; the lower end of the second vertical transmission rod is connected with a second curved ruler-shaped connecting rod, the second curved ruler-shaped connecting rod can be rotatably installed on the cabinet body, the rotating shaft of the second curved ruler-shaped connecting rod is located in the middle of the second vertical transmission rod, a third transmission pin is arranged at the lower end of the second vertical transmission rod, a third long hole is formed in the first end of the second curved ruler-shaped connecting rod, the third transmission pin is inserted into the third long hole, the second end of the second curved ruler-shaped connecting rod is connected with a second horizontal transmission rod, the second horizontal transmission rod can be longitudinally and slidably installed on the cabinet body, a fourth long hole is formed in the second end of the second curved ruler-shaped connecting rod, a fourth transmission pin is arranged at the rear end of the second horizontal transmission rod, the fourth transmission pin is inserted into the fourth long hole, and the; in the closing process of the rear door, the rear door pushes the second horizontal transmission rod to move forwards, the second horizontal transmission rod drives the second curved-ruler-shaped connecting rod to rotate clockwise, and the second curved-ruler-shaped connecting rod pulls down the rear baffle through the second vertical transmission rod; when the rear door is closed, the second vertical transmission rod reaches the lowest point of the vertical moving track.
Preferably, the earthing 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 second bevel gear is coaxially and fixedly connected with an earthing switch transmission shaft, and the axial direction of the earthing switch transmission shaft is transverse; the grounding switch transmission shaft is fixedly connected with a transmission swing arm, the transmission swing arm synchronously rotates along with the grounding switch transmission shaft, a connecting rod is connected between the transmission swing arm and the grounding switch moving contact, and the transmission swing arm, the connecting rod and the grounding switch moving contact form a double-rocker mechanism.
The rotating shaft of the first curved-ruler-shaped connecting rod and the rotating shaft of the second curved-ruler-shaped connecting rod are positioned on the same straight line.
In the interlocking control assembly, the inner end is the end closer to the cam; the outer end refers to the end far away from the cam; the so-called inner side; which is the side closer to the cam. The outer side is a side away from the cam.
The utility model has the advantages of it is following and effect:
the utility model discloses form following chain relation:
firstly, under the condition that a front door or/and a rear door is opened, the front baffle or/and the rear baffle is/are necessarily located at a high point of a vertical moving track, the vertical position of an interlocking round hole is not aligned with a transverse interlocking rod, or two semicircular gaps are higher and lower and are not spliced to form the interlocking round hole, so that the transverse interlocking rod cannot be inserted into the interlocking round hole outwards, the high-section part of a cam cannot contact with a roller, an operating shaft of a grounding switch cannot rotate to a switching-off position, the grounding switch is ensured to keep a switching-on state, and the safety of personnel entering a cabinet is ensured.
Second, the utility model discloses an interlocking control subassembly can control the shutting relation of qianmen, can control the shutting relation of back door again, and overall structure is simple, reliable, ingenious.
Drawings
Fig. 1 is a schematic diagram of a lateral projection structure according to an embodiment of the present invention.
Fig. 2 is a schematic view of a longitudinal projection structure according to an embodiment of the present invention.
Fig. 3 is a schematic view of a top-view projection structure according to an embodiment of the present invention.
Fig. 4 is an enlarged view of part G of fig. 1.
Fig. 5 is a partially enlarged schematic view of H in fig. 1.
Fig. 6 is an enlarged view of part K of fig. 3.
Fig. 7 is a schematic structural diagram of the grounding switch according to the embodiment of the present invention after opening.
Fig. 8 is a perspective view of the interlock control assembly in the state shown in fig. 1.
Fig. 9 is a sectional view schematically showing the interlock control assembly in the state shown in fig. 8.
Fig. 10 is a cam surface structure diagram of the cam.
Fig. 11 is a schematic structural diagram of the grounding switch according to the embodiment of the present invention after being switched on.
Fig. 12 is a perspective view of the interlock control assembly in the state shown in fig. 11.
Fig. 13 is a sectional view schematically showing the interlock control assembly in the state shown in fig. 11.
Fig. 14 is another sectional structure diagram of the interlock control assembly in the state shown in fig. 11.
Fig. 15 is a schematic view of the structure of the front and rear baffle plates.
Detailed Description
The front and rear door and earthing switch locking structure of the switch cabinet shown in fig. 1, 2, 3, 4 and 7 comprises a cabinet body 8, wherein the cabinet body 8 is provided with a front door 81 and a rear door 82, and an earthing switch and a circuit breaker are installed in the cabinet body 8; the grounding switch is provided with a grounding switch fixed contact 61 and a grounding switch moving contact 60, the grounding switch moving contact 60 can be rotatably arranged in the cabinet body, and a rotating shaft 66 of the grounding switch moving contact 60 extends transversely; the grounding switch is provided with a grounding switch operating shaft 7, the extending direction of the grounding switch operating shaft 7 is longitudinal, and the grounding switch operating shaft 7 is in driving connection with a grounding switch moving contact 60; specifically, the earthing switch operating shaft 7 is fixedly connected with a first bevel gear 71 coaxially, the first bevel gear 71 is meshed with a second bevel gear 72, the second bevel gear 72 is fixedly connected with an earthing switch transmission shaft 74 coaxially, and the axial direction of the earthing switch transmission shaft 74 is transverse; the grounding switch transmission shaft 74 is fixedly connected with a transmission swing arm 75, the transmission swing arm 75 rotates synchronously along with the grounding switch transmission shaft 74, a connecting rod 76 is connected between the transmission swing arm 75 and the grounding switch moving contact 60, and the transmission swing arm 75, the connecting rod 76 and the grounding switch moving contact 60 form a double-rocker mechanism, so that the grounding switch transmission shaft 74 is in driving connection with the grounding switch moving contact 60. When the grounding switch operating shaft 7 rotates to the switching-on position, the grounding switch moving contact 60 rotates to the position contacting the grounding switch static contact 61, as shown in fig. 11, the grounding switch is switched on; when the grounding switch operating shaft 7 rotates to the opening position, the grounding switch moving contact 60 rotates to a position away from the grounding switch fixed contact 61, and the grounding switch operating shaft opens as shown in fig. 7;
3, 4, 5, 6, 8 and 9, and an interlocking control assembly is also arranged; the interlocking control assembly comprises a cam 91, a roller 92, a circular transverse interlocking rod 93, an interlocking rod outer sleeve 94, an interlocking block 95, a front baffle 97 and a rear baffle 98; the cam 91 is fixedly connected with the grounding switch operating shaft 7 and rotates along with the grounding switch operating shaft 7; the transverse interlocking rod 93 is installed in the interlocking rod outer sleeve 94 in a transverse sliding way, and a horizontal return spring 930 for applying elastic force in the inner side direction to the transverse interlocking rod 93 is also arranged; the interlocking block 95 is positioned on the outer side of the interlocking rod outer sleeve 94, the interlocking block 95 is provided with a circular transverse through hole 950, and the central axis of the transverse through hole 950 is positioned on the same straight line with the central axis of the transverse interlocking rod 93; the circumferential side surface of the roller 92 is pressed against the cam surface of the cam 91, the inner end of the transverse interlocking rod 93 is fixedly connected with the roller 92, and the transverse interlocking rod 93 and the roller 92 synchronously move transversely; front and rear stops 97, 98 are vertically slidably mounted inside the interlocking block 95, the lateral positions of the front and rear stops 97, 98 are flush, the rear edge of the front stop 97 abuts the front edge of the rear stop 98, and the lateral positions of the front and rear stops 97, 98 are outside the interlocking rod outer sleeve 94; as shown in fig. 15, a semicircular notch 970 is formed at the rear edge of the front baffle 97, a semicircular notch 980 is also formed at the front edge of the rear baffle 98, when the front baffle 97 and the rear baffle 98 both move downward to the lowest point of the vertical movement track, the semicircular notch 970 and the semicircular notch 980 form an interlocking circular hole 990, and the interlocking circular hole 990 is aligned with the transverse through hole 950 of the interlocking block 95;
as shown in fig. 10, the cam surface of the cam 91 is formed with a high-stage portion (e.g., segment BC in fig. 10) and a low-stage portion (e.g., segment EF in fig. 10), and the distance between the high-stage portion (e.g., segment BC in fig. 10) and the cam shaft center line (e.g., point O in fig. 10) is greater than the distance between the low-stage portion (e.g., segment EF in fig. 10) and the cam shaft center line (e.g., point O in fig. 10);
as shown in fig. 12, 13, 14 and 11, when the earthing switch operating shaft 7 drives the earthing switch moving contact 60 to contact with the earthing switch fixed contact 61 through the first bevel gear 71, the second bevel gear 72, the earthing switch transmission shaft 74, the transmission swing arm 75 and the connecting rod 76, the earthing switch operating shaft 7 rotates to the switching-on position, the low-stage part of the cam 91 contacts with the roller 92, and the transverse position of the outer end point of the transverse interlocking rod 93 is located inside the front baffle 97 and the rear baffle 98;
as shown in fig. 7, 8 and 9, when the earthing switch operating shaft 7 drives the earthing switch moving contact 60 to move away from the earthing switch fixed contact 61 through the first bevel gear 71, the second bevel gear 72, the earthing switch transmission shaft 74, the transmission swing arm 75 and the connecting rod 76, the earthing switch operating shaft 7 rotates to the opening position, the high-stage part of the cam 91 contacts the roller 92, and the transverse position of the outer end point (point W in fig. 9) of the transverse interlocking rod 93 is located outside the front baffle 97 and the rear baffle 98;
as shown in fig. 9, 8 and 5, a first vertical return spring 51 for applying an upward elastic force to the front baffle 97 and a second vertical return spring 52 for applying an upward elastic force to the rear baffle 98 are further provided; as shown in fig. 1, 4, 5, 6 and 8, a first vertical transmission rod 11 is connected below the front baffle 97, the first vertical transmission rod 11 and the front baffle 97 synchronously slide vertically, a first curved-ruler-shaped connecting rod 12 is connected to the lower end of the first vertical transmission rod 11, the first curved-ruler-shaped connecting rod 12 can be rotatably installed on the cabinet body, a rotating shaft 13 of the first curved-ruler-shaped connecting rod is located at the middle position of the first vertical transmission rod 11, a first transmission pin 14 is arranged at the lower end of the first vertical transmission rod 11, a first long hole 15 is formed in the first end of the first curved-ruler-shaped connecting rod 12, the first transmission pin 14 is inserted into the first long hole 15, a first horizontal transmission rod 16 is connected to the second end of the first curved-ruler-shaped connecting rod 12, and the first horizontal transmission rod 16 can be longitudinally slidably installed on; a second long hole 25 is formed at the second end of the first curved-square-shaped connecting rod 12, a second transmission pin 24 is arranged at the rear end of the first horizontal transmission rod 16, the second transmission pin 24 is inserted into the second long hole 25, and the front end of the first horizontal transmission rod 16 is close to the front door 81; in the closing process of the front door 81, the front door 81 pushes the first horizontal transmission rod 16 to move backwards, the first horizontal transmission rod 16 drives the first curved-ruler-shaped connecting rod 12 to rotate anticlockwise, and the first curved-ruler-shaped connecting rod 12 pulls the front baffle 97 downwards through the first vertical transmission rod 11; when the front door 81 is closed, the first vertical transmission rod 11 reaches the lowest point of the vertical movement track, as shown in fig. 1, 4 and 8;
as shown in fig. 1, 4, 5, 6 and 8, a second vertical transmission rod 21 is connected below the rear baffle 98, and the second vertical transmission rod 21 and the rear baffle 98 synchronously slide vertically; the lower end of the second vertical transmission rod 21 is connected with a second curved-ruler-shaped connecting rod 22, the second curved-ruler-shaped connecting rod 22 is rotatably installed on the cabinet body, the rotating shaft 23 of the second curved-ruler-shaped connecting rod 22 is located at the middle position of the second curved-ruler-shaped connecting rod 22, and the rotating shaft 13 of the first curved-ruler-shaped connecting rod and the rotating shaft 23 of the second curved-ruler-shaped connecting rod are located on the same straight line, so that the two positions are overlapped in fig. 4. A third transmission pin 34 is arranged at the lower end of the second vertical transmission rod 21, a third long hole 35 is formed in the first end of the second curved-square-shaped connecting rod 22, the third transmission pin 34 is inserted into the third long hole 35, the second end of the second curved-square-shaped connecting rod 22 is connected with a second horizontal transmission rod 26, the second horizontal transmission rod 26 can be longitudinally slidably mounted on the cabinet body, a fourth long hole 45 is formed in the second end of the second curved-square-shaped connecting rod 22, a fourth transmission pin 44 is arranged at the rear end of the second horizontal transmission rod 26, the fourth transmission pin 44 is inserted into the fourth long hole 45, and the rear end of the second horizontal transmission rod 26 is close to the rear door 82; in the closing process of the rear door 82, the rear door 82 pushes the second horizontal transmission rod 26 to move forwards, the second horizontal transmission rod 26 drives the second curved-ruler-shaped connecting rod 22 to rotate clockwise, and the second curved-ruler-shaped connecting rod 22 pulls down the rear baffle 98 through the second vertical transmission rod 21; when the rear door 82 is closed, the second vertical driving rod 21 reaches the lowest point of the vertical moving track, as shown in fig. 1, 4 and 8
The locking principle of the above embodiment is as follows:
(1) in a normal power transmission running state, the circuit breaker is in a closing state, the front door 81 and the rear door 82 are both in a closing position, the first horizontal transmission rod 16 is located at the rear end point of the longitudinal moving track of the first horizontal transmission rod, and the second horizontal transmission rod 26 is located at the front end point of the longitudinal moving track of the second horizontal transmission rod; the earthing switch is opened, the earthing switch operating shaft 7 is in the opening position, the earthing switch moving contact 60 is separated from the earthing switch static contact 61, the high-section part of the cam contacts the roller 92, the transverse position of the outer end point of the transverse interlocking rod 93 is positioned on the outer sides of the front baffle 97 and the rear baffle 98, the front baffle 97 and the rear baffle 98 are both positioned at the lowest points of respective vertical moving tracks, and the transverse interlocking rod 93 penetrates through an interlocking round hole 990 formed by the front baffle and the rear baffle, as shown in fig. 7, 8, 9 and 10;
(2) when the front door 81 and the rear door 82 of the cabinet body need to be opened, the circuit breaker is switched off, the externally matched grounding isolation operating handle is used for driving and connecting the grounding switch operating shaft 7, the grounding isolation operating handle drives the grounding switch operating shaft 7 to rotate, the grounding switch operating shaft 7 drives the grounding switch moving contact 60 to rotate to contact the grounding switch fixed contact 61 through the first bevel gear 71, the second bevel gear 72, the grounding switch transmission shaft 74, the transmission swing arm 75 and the connecting rod 76, the grounding switch moving contact is switched on, the lower section of the cam 91 contacts the roller 92, the transverse interlocking rod 93 is separated from the interlocking circular hole 990, and the transverse position of the outer end point of the transverse interlocking rod 93 is located on the inner sides of the front baffle 97 and the rear baffle 98, as shown in fig. 11, fig. 12, fig. 13 and fig.;
(3) the front door 81 is opened, under the action of the elastic force of the first vertical return spring 51, the first vertical transmission rod 11 and the front baffle 97 move upwards, the first curved-ruler-shaped connecting rod 12 rotates clockwise around the rotating shaft 13 thereof, and the first horizontal transmission rod 16 moves forwards; the back door 82 is opened, the second vertical driving rod 21 and the tailgate 98 move upward under the elastic force of the second vertical return spring 52, the rotating shaft 23 of the second curved-ruler-shaped connecting rod 21 rotates counterclockwise, and the second horizontal driving rod 26 moves backward;
(4) in the state after the substep (3) is completed, when power transmission needs to be switched on again, the front door can be closed, the front door 81 pushes the first horizontal transmission rod 16 to move backwards, the first horizontal transmission rod 16 pushes the first curved ruler-shaped connecting rod 12 to rotate the rotating shaft 13 thereof anticlockwise, and the first curved ruler-shaped connecting rod 12 pulls the first vertical transmission rod 11 and the front baffle 97 downwards to the lowest point; the rear door 82 is closed, the rear door 82 pushes the second horizontal transmission rod 26 to move forwards, the second horizontal transmission rod 26 pushes the second curved-ruler-shaped connecting rod 22 to rotate the rotating shaft 23 thereof clockwise, and the second curved-ruler-shaped connecting rod 22 pulls the second vertical transmission rod 21 and the rear baffle 98 downwards to the lowest point; an interlocking round hole 990 consisting of the semicircular notch 970 of the front baffle and the semicircular notch 980 of the rear baffle is aligned with the outer end of the transverse interlocking rod 93;
(5) the grounding switch operating shaft 7 is driven and connected by an externally matched grounding isolation operating handle, the grounding isolation operating handle drives the grounding switch operating shaft 7 to rotate, the grounding switch operating shaft 7 drives the grounding switch moving contact 60 to be separated from the grounding switch static contact 61 through a first bevel gear 71, a second bevel gear 72, a grounding switch transmission shaft 74, a transmission swing arm 75 and a connecting rod 76, and the grounding switch is switched off; the high-section part of the cam 91 contacts the roller 92, the transverse interlocking rod 93 is inserted into an interlocking round hole 990 consisting of a semicircular notch 970 of the front baffle and a semicircular notch 980 of the rear baffle, and the transverse position of the outer end point of the transverse interlocking rod 93 is positioned on the outer sides of the front baffle 97 and the rear baffle 98; and (4) switching on the circuit breaker, and recovering to the normal power transmission running state in the step (1).
Claims (3)
1. A front door, a rear door and a grounding switch locking structure of a switch cabinet comprises a cabinet body, wherein the cabinet body is provided with a front door and a rear door, and a grounding switch and a circuit breaker are installed in the cabinet body; the grounding switch is provided with a grounding switch static contact and a grounding switch moving contact, the grounding switch moving contact can be rotatably arranged in the cabinet body, and the rotating shaft direction of the grounding switch moving contact is transverse; the grounding switch is provided with a grounding switch operating shaft, the extension direction of the grounding switch operating shaft is longitudinal, and the grounding switch operating shaft is in driving connection with a grounding switch moving contact; when the grounding switch operating shaft rotates to a switching-on position, the moving contact of the grounding switch rotates to a position contacting the static contact of the grounding switch, and the grounding switch is switched on; when the grounding switch operating shaft rotates to the opening position, the moving contact of the grounding switch rotates to a position away from the static contact of the grounding switch, and the grounding switch operating shaft opens;
it is characterized in that an interlocking control component is also arranged; the interlocking control assembly comprises a cam, a roller, a circular transverse interlocking rod, an interlocking rod outer sleeve, an interlocking block, a front baffle and a rear baffle; the cam is fixedly connected with the grounding switch operating shaft and rotates along with the grounding switch operating shaft; the transverse interlocking rod can be transversely and slidably arranged in the interlocking rod outer sleeve, and a horizontal return spring for applying elastic force in the inner side direction to the transverse interlocking rod is also arranged; the interlocking block is positioned on the outer side of the interlocking rod outer sleeve, a circular transverse through hole is formed in the interlocking block, and the central axis of the transverse through hole and the central axis of the transverse interlocking rod are positioned on the same straight line; the circumferential side surface of the roller is pressed against the cam surface of the cam, the inner end of the transverse interlocking rod is fixedly connected with the roller, and the transverse interlocking rod and the roller synchronously move transversely;
the front baffle and the rear baffle are vertically and slidably arranged on the inner side of the interlocking block, the transverse positions of the front baffle and the rear baffle are flush, the rear edge of the front baffle is adjacent to the front edge of the rear baffle, and the transverse positions of the front baffle and the rear baffle are positioned on the outer side of the interlocking rod outer sleeve;
the rear edge of the front baffle is provided with a semicircular notch, the front edge of the rear baffle is also provided with a semicircular notch, when the front baffle and the rear baffle both move downwards to the lowest point of the vertical movement track, the two semicircular notches form an interlocking circular hole, and the interlocking circular hole is aligned to the transverse through hole of the interlocking block;
the cam surface of the cam is provided with a high-section part and a low-section part, and the distance between the high-section part and the center line of the cam rotating shaft is greater than the distance between the low-section part and the center line of the cam rotating shaft;
when the earthing switch operating shaft rotates to the switching-on position, the lower section part of the cam contacts with the roller, and the transverse position of the outer end point of the transverse interlocking rod is positioned on the inner sides of the front baffle and the rear baffle;
when the grounding switch operating shaft rotates to the opening position, the high section part of the cam contacts with the roller, and the transverse position of the outer end point of the transverse interlocking rod is positioned on the outer sides of the front baffle and the rear baffle;
the first vertical return spring is used for applying upward elastic force to the front baffle, and the second vertical return spring is used for applying upward elastic force to the rear baffle; a first vertical transmission rod is connected below the baffle, the first vertical transmission rod and the front baffle synchronously and vertically slide, the lower end of the first vertical transmission rod is connected with a first curved ruler-shaped connecting rod, the first curved ruler-shaped connecting rod can be rotatably installed on the cabinet body, the rotating shaft of the first curved ruler-shaped connecting rod is located in the middle of the first curved ruler-shaped connecting rod, the lower end of the first vertical transmission rod is provided with a first transmission pin, the first end of the first curved ruler-shaped connecting rod is provided with a first long hole, the first transmission pin is inserted into the first long hole, the second end of the first curved ruler-shaped connecting rod is connected with a first horizontal transmission rod, the first horizontal transmission rod can be longitudinally slidably installed on the cabinet body, the second end of the first curved ruler-shaped connecting rod is provided with a second long hole, the rear end of the first horizontal transmission rod is provided with a second transmission pin, the second transmission pin is inserted into the second; in the closing process of the front door, the front door pushes the first horizontal transmission rod to move backwards, the first horizontal transmission rod drives the first curved-ruler-shaped connecting rod to rotate anticlockwise, and the first curved-ruler-shaped connecting rod pulls the front baffle downwards through the first vertical transmission rod; after the front door is closed, the first vertical transmission rod reaches the lowest point of the vertical moving track;
a second vertical transmission rod is connected below the rear baffle and vertically slides synchronously with the rear baffle; the lower end of the second vertical transmission rod is connected with a second curved ruler-shaped connecting rod, the second curved ruler-shaped connecting rod can be rotatably installed on the cabinet body, the rotating shaft of the second curved ruler-shaped connecting rod is located in the middle of the second vertical transmission rod, a third transmission pin is arranged at the lower end of the second vertical transmission rod, a third long hole is formed in the first end of the second curved ruler-shaped connecting rod, the third transmission pin is inserted into the third long hole, the second end of the second curved ruler-shaped connecting rod is connected with a second horizontal transmission rod, the second horizontal transmission rod can be longitudinally and slidably installed on the cabinet body, a fourth long hole is formed in the second end of the second curved ruler-shaped connecting rod, a fourth transmission pin is arranged at the rear end of the second horizontal transmission rod, the fourth transmission pin is inserted into the fourth long hole, and the; in the closing process of the rear door, the rear door pushes the second horizontal transmission rod to move forwards, the second horizontal transmission rod drives the second curved-ruler-shaped connecting rod to rotate clockwise, and the second curved-ruler-shaped connecting rod pulls down the rear baffle through the second vertical transmission rod; when the rear door is closed, the second vertical transmission rod reaches the lowest point of the vertical moving track.
2. The front and rear door and ground switch locking structure of switch cabinet according to claim 1, characterized in that: the grounding 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 second bevel gear is coaxially and fixedly connected with a grounding switch transmission shaft, and the axial direction of the grounding switch transmission shaft is transverse; the grounding switch transmission shaft is fixedly connected with a transmission swing arm, the transmission swing arm synchronously rotates along with the grounding switch transmission shaft, a connecting rod is connected between the transmission swing arm and the grounding switch moving contact, and the transmission swing arm, the connecting rod and the grounding switch moving contact form a double-rocker mechanism.
3. The front and rear door and ground switch locking structure of switch cabinet according to claim 1, characterized in that: the rotating shaft of the first curved-ruler-shaped connecting rod and the rotating shaft of the second curved-ruler-shaped connecting rod are positioned on the same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021986171.3U CN213150614U (en) | 2020-09-11 | 2020-09-11 | Front and rear door and grounding switch locking structure of switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021986171.3U CN213150614U (en) | 2020-09-11 | 2020-09-11 | Front and rear door and grounding switch locking structure of switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213150614U true CN213150614U (en) | 2021-05-07 |
Family
ID=75711131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021986171.3U Active CN213150614U (en) | 2020-09-11 | 2020-09-11 | Front and rear door and grounding switch locking structure of switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213150614U (en) |
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2020
- 2020-09-11 CN CN202021986171.3U patent/CN213150614U/en active Active
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