CN209747373U - Switch cabinet with earthing switch and front cable chamber door arranged in interlocking manner - Google Patents
Switch cabinet with earthing switch and front cable chamber door arranged in interlocking manner Download PDFInfo
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- CN209747373U CN209747373U CN201920349937.8U CN201920349937U CN209747373U CN 209747373 U CN209747373 U CN 209747373U CN 201920349937 U CN201920349937 U CN 201920349937U CN 209747373 U CN209747373 U CN 209747373U
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Abstract
the utility model relates to a medium voltage switchgear technical field, concretely relates to cubical switchboard that earthing switch and preceding cable chamber door interlocking arranged. This cubical switchboard includes the cabinet body, be equipped with earthing switch and earthing switch operating axis in the cabinet body, cabinet body lower part is equipped with cable chamber and preceding cable chamber door, be equipped with interlock between earthing switch operating axis and the preceding cable chamber door, interlock is when earthing switch operating axis is in the separating brake state locking preceding cable chamber door in order to prevent that preceding cable chamber door from opening, open back locking earthing switch operating axis in order to prevent that earthing switch operating axis from carrying out the separating brake operation at preceding cable chamber door, interlock includes the locking piece, door interlocking board and door anti-lock piece, door anti-lock piece has the unblock position of locking position and dodging the locking piece on its reciprocating motion stroke, set up like this and become preceding cable chamber door itself with the drive structure of door interlocking board, no longer need set up drive structure and order about door interlocking board reciprocating motion, whole interlock's structure is simpler relatively.
Description
Technical Field
the utility model relates to a medium voltage switchgear technical field, concretely relates to cubical switchboard that earthing switch and preceding cable chamber door interlocking arranged.
Background
as shown in fig. 1, an electrical cabinet in which a medium voltage switchgear is located generally includes an instrument room 1, a bus bar room 2, a breaker room 3, a front lower compartment 4 and a rear cable room 5, wherein the front lower compartment 4 is a separate compartment and is not a high voltage live room, and the rear cable room 5 is a high voltage live room for installing electrical components. Along with the continuous improvement of distribution network transportation requirements, the requirements on the precision and the function of the performance of the switch cabinet are continuously increased, the requirements on parameters of components in the switch cabinet are more and more accurate, the range of the parameters is larger and larger, the performance coverage is wider, the appearance of an electric appliance element is overlarge, the installation of the electric appliance element cannot be realized by only utilizing the rear cable chamber 5, therefore, more and more switch cabinets communicate the front lower compartment 4 with the rear cable chamber 5 to form an integrated front cable chamber during design, as shown in fig. 2, the front cable chamber 6 formed by communicating the front lower compartment with the rear cable chamber increases the space for the installation of the electric appliance element, and the installation of more electric appliance elements is facilitated. The compartment has also become high-voltage live compartment under preceding when increasing installation space, because have earthing switch and along the earthing switch operating axis of horizontal arrangement in the preceding cable chamber 6, the conversion of earthing switch's divide-shut brake state can be realized through earthing switch operating axis's rotation, and when earthing switch was in the separating brake state, preceding cable chamber 6 was in high-voltage live state, and the maintenance personal opened preceding cable chamber door and got into indoor work when earthing switch was in the separating brake state and had probably caused the accident.
In view of this problem, chinese utility model patent document No. CN205303291U discloses an interlocking mechanism (i.e. an interlock) and a medium voltage switchgear for use between a grounding switch and a cable chamber door. The interlocking device is integrally arranged on a side plate of a switch mechanism and specifically comprises a first sliding rod arranged in an up-and-down extending mode and a second sliding rod arranged in a horizontal direction, and a grounding switch operating shaft is connected with the first sliding rod through a cam and can drive the first sliding rod to move up and down through the cam; the second slide bar is arranged on the lower side of the first slide bar, can reciprocate along the horizontal direction and is provided with an avoidance hole for avoiding the first slide bar, the lower side of the second slide bar is provided with a fixing plate for fixing the first slide bar to realize locking, one end, close to a front cable chamber door, of the second slide bar is also fixedly provided with a reset elastic piece, when the front cable chamber door is closed, the first slide bar moves downwards to penetrate through the avoidance hole of the second slide bar and enters the fixing plate to be fixed, at the moment, the front cable chamber door cannot be opened, and the grounding switch is in a brake separating state; when the door of the front cable chamber is opened, the door of the front cable chamber drives the second slide bar to move outwards, the avoiding hole of the second slide bar is staggered with the first slide bar, the first slide bar cannot move downwards, the earthing switch cannot perform brake separating operation, and at the moment, the overhaul and maintenance personnel can enter the chamber to perform operation.
But above-mentioned device has certain problem, because the fixed plate only is used for inserting the locking in order to realize preceding cable chamber door with first slide bar, need set up corresponding structure in addition on preceding cable chamber door and order about the second slide bar and remove, and at this moment, the one end of second slide bar towards preceding cable chamber door need set up the overlength in order to cooperate with the corresponding structure on the preceding cable chamber door to guarantee that preceding cable chamber door can push away the second slide bar and remove, the problem of the mutual interference of part on second slide bar and the preceding cable chamber door appears easily.
SUMMERY OF THE UTILITY MODEL
an object of the utility model is to provide a cubical switchboard that earthing switch and preceding cable chamber door interlocking arranged to solve the fixed plate on the cable chamber door that exists among the prior art and only be used for the first slide bar of locking and need set up the structure in addition and order about the problem that the second slide bar removed in order to realize the switching operation separating brake locking of earthing switch.
In order to achieve the purpose, the utility model discloses earthing switch and preceding cable chamber door interlocking arrange's cubical switchboard adopts following technical scheme:
A switch cabinet with an earthing switch and a front cable chamber door which are arranged in an interlocking manner comprises a cabinet body, wherein the cabinet body is provided with an earthing switch and an earthing switch operating shaft, the lower part of the cabinet body is provided with a cable chamber and a corresponding front cable chamber door, an interlocking device is arranged between the earthing switch operating shaft and the front cable chamber door, the interlocking device locks the front cable chamber door when the earthing switch operating shaft is in a tripping state so as to prevent the front cable chamber door from being opened, locks the earthing switch operating shaft after the front cable chamber door is opened so as to prevent the earthing switch operating shaft from performing tripping operation, the interlocking device comprises a locking piece which corresponds to the opening and closing operations of the grounding switch operating shaft and controls the reciprocating motion of the grounding switch operating shaft through a mechanical transmission mechanism, the door interlocking plate is fixedly arranged on the inner side of the front cable chamber door, a fixed bracket is arranged in the cabinet body, and the locking piece is assembled on the fixed bracket in a reciprocating manner along the horizontal direction; the locking piece is provided with a brake separating completion position and a closing completion position, wherein the brake separating completion position is matched with the door interlocking plate in a stopping manner on the reciprocating movement stroke of the locking piece so as to prevent the door of the front cable chamber from being opened, and the closing completion position is used for avoiding the door interlocking plate.
The interlocking device further comprises a door anti-locking piece which moves in a reciprocating mode, the door anti-locking piece is provided with a locking position and an unlocking position, the locking position is used for stopping the locking piece at a closing completion position to prevent the earthing switch operating shaft from being subjected to opening operation, the unlocking position is used for avoiding the locking piece, the door anti-locking piece is connected with a reset elastic piece which applies elastic acting force to the door anti-locking piece to force the door anti-locking piece to move towards the locking position, an unlocking pushing portion used for pushing the door anti-locking piece to move towards unlocking displacement when the front cable chamber door is closed is arranged on the door interlocking plate, and an unlocking stopping portion used for being matched with the pushing portion of the door interlocking plate in a pushing mode is arranged on the door anti-locking piece.
The beneficial effects of the above technical scheme are: when the grounding switch operating shaft rotates to realize the opening and closing operation of the grounding switch, the grounding switch operating shaft simultaneously drives the locking piece to reciprocate through the crank arm and the connecting rod transmission mechanism, when the grounding switch finishes the opening operation, the door interlocking plate pushes the door locking piece to move towards unlocking displacement, the locking piece is in stop fit with the closed door lock connecting plate of the front cable chamber door, and the front cable chamber door is prevented from being opened. The arrangement is equivalent to changing the driving structure of the door interlocking plate into the front cable chamber door, so that an additional driving structure is not needed to drive the door interlocking plate to reciprocate, and the structure of the whole interlocking device is relatively simpler.
further, the unlocking push-out portions are provided at respective ends of the door interlock plate away from the front cable chamber door. The unlocking pushing part is arranged at one end far away from the door of the front cable chamber, so that the end, close to the door of the front cable chamber, of the door locking piece can be designed to be shorter, the interference with a structure on the door of the front cable chamber can be effectively avoided, the locking effect of the door of the front cable chamber is guaranteed, and the reliability of the whole device is better.
Furthermore, an elbow used for being matched with the unlocking pushing part in a pushing mode is arranged at the corresponding end of the door unlocking piece, and the elbow forms the unlocking stopping part. The elbow has simple structure and is convenient to set.
Further, the reciprocating movement direction of the locking piece is defined as the front-back direction, the door interlocking plate is located on the front side of the fixing support, a front partition plate piece and a rear partition plate piece which form an installation interval are arranged on the fixing support, guide through holes for guiding the locking piece to reciprocate are formed in the two partition plate pieces, through holes for the locking portions of the locking piece to penetrate through are further formed in the two partition plate pieces, the door locking piece is arranged in the installation interval, and a reverse locking stopping portion used for blocking the through holes in the rear partition plate piece when the door locking piece moves to the locking position is arranged on the door locking piece. The arrangement of the door locking piece is facilitated by the arrangement of the two partition plate pieces, and meanwhile, the guide holes of the two partition plate pieces guide the reciprocating movement of the locking piece, so that the reciprocating movement of the locking part of the locking piece is more stable and accurate.
Further, the door back-locking piece and the locking piece are arranged vertically, and the door interlocking plate is arranged in parallel with the door back-locking piece when the front cable chamber door is closed. Arrange like this and make the locking piece can be more direct carry out the locking to door latch-up spare and AND gate interlocking board, the locking effect is more obvious.
Further, the guide through holes and the via holes on the two partition plates are arranged in a staggered manner in the vertical direction, the locking member is provided with a guide plate which is in guide fit with the guide through holes on the two partition plates, and a locking plate which is used for penetrating through the via holes and serves as the locking part, and the width of the locking plate in the vertical direction is larger than that of the guide plate in the vertical direction.
Furthermore, a corner protection plate is arranged on the fixing support and used for supporting the door interlocking plate when the front cable chamber door is closed. The corner protection plate is used for supporting the door interlocking plate and can prevent the corner of the front cable chamber door from deforming.
Further, a lower portion of the door interlock plate, which is away from a corresponding end of the front cable chamber door, is provided with a chamfered structure. The chamfer structure can avoid the deformation of the door interlocking plate and the corner protection plate due to collision.
drawings
FIG. 1 is a schematic diagram of the chambers of a conventional switchgear cabinet;
FIG. 2 is a schematic view of the chambers of a prior art new switchgear;
Fig. 3 is a schematic structural diagram of an embodiment of the switch cabinet of the present invention (the front cable chamber door is not shown);
FIG. 4 is a schematic structural view of the earthing switch operating shaft and front cable chamber door interlock device of FIG. 3;
FIG. 5 is a schematic view of the structure of FIG. 4 at another angle;
Fig. 6 is a schematic structural view (closed state) of the interlock device of the earthing switch operating shaft and the front cable chamber door shown in fig. 4 mounted on the cabinet body;
FIG. 7 is a schematic view of the door opened state corresponding to FIG. 6;
Fig. 8 is a schematic structural view (closed door state) of the earthing switch operating shaft and the front cable compartment door interlocking device shown in fig. 4 when the front cable compartment door is closed;
FIG. 9 is a schematic view of the door opened state corresponding to FIG. 8;
FIG. 10 is a schematic view of the locking member of FIG. 4;
FIG. 11 is a schematic view of the door latch of FIG. 4;
FIG. 12 is a first schematic view of the structure of the fixing bracket of FIG. 4 (without the rear bulkhead member installed);
FIG. 13 is a second schematic structural view of the mounting bracket of FIG. 4 (with no rear bulkhead piece installed);
FIG. 14 is a schematic view of the interlock arrangement of FIG. 3 with the door back lock in the locked position;
FIG. 15 is a side view of FIG. 14;
FIG. 16 is a schematic view of the door latch assembly of FIG. 14 assembled with the tension spring (open door condition);
Fig. 17 is a schematic view of the state of the door latch member and the tension spring in the switch cabinet of the present invention in the unlocked position after being assembled (closed state);
FIG. 18 is a schematic view of the structure of the door interlock plate of FIG. 4;
FIG. 19 is a schematic structural view of the corner protection plate in FIG. 5;
FIG. 20 is a schematic view of the assembly of the corner protection plate and the fixing bracket;
description of reference numerals: 1-instrument room, 2-bus room, 3-breaker room, 4-front lower compartment, 5-rear cable room, 6-front cable room, 7-earthing switch operating shaft, 8-crank arm, 9-upper transmission link plate, 10-middle transmission plate, 11-lower transmission link plate, 12-positioning guide plate, 13-cabinet side plate, 14-fixing support, 141-front vertical plate, 1411-guide through hole, 1412-via hole, 1413-embedding groove, 142-rear compartment plate, 143-rear vertical plate, 15-locking piece, 151-guide plate, 152-locking plate, 16-door locking piece, 161-elbow, 162-unlocking blocking part, 163-plate body, 17-tension spring, 18-door interlocking plate, 181-pushing end, 182-upper projection, 19-corner protection plate, 20-front cable chamber door.
Detailed Description
The following description will further describe the embodiments of the present invention with reference to the accompanying drawings (it should be noted that the front-back direction defined in the present embodiment is the reciprocating direction of the locking member, specifically, the extending direction of the locking member is front, and the retracting direction is back).
The utility model discloses earthing switch and preceding cable chamber door interlocking arrange's cubical switchboard's embodiment:
As shown in fig. 3, the switch cabinet includes a cabinet body, a circuit breaker and a grounding switch are disposed in the cabinet body, a front cable chamber and a corresponding front cable chamber door are disposed at the lower portion of the cabinet body, the front cable chamber exists as a high-voltage electrified compartment, and therefore a corresponding interlocking device needs to be disposed between the grounding switch and the front cable chamber door to ensure safe operation. The interlock here mainly arranges between earthing switch operating axis 7 and preceding cable chamber door, locks preceding cable chamber door when earthing switch operating axis 7 orders about earthing switch divide-shut brake in order to avoid preceding cable chamber door to be opened by accident, when preceding cable chamber door is opened, and reverse locking earthing switch operating axis is in order to avoid earthing switch separating brake operation, guarantees that only preceding cable chamber door is when the closed condition, and earthing switch operating axis can drive earthing switch and carry out the separating brake operation.
Specifically, as shown in fig. 4 to 9, an interlock device including a crank arm 8, a mechanical transmission mechanism, a lock member 15, a door interlock plate 18, and a door interlock member 16 is provided between the earthing switch operating shaft and the front cable chamber door. Wherein, the connecting lever 8 is coaxially and fixedly arranged on the earthing switch operating shaft 7, and the connecting lever 8 is hinged with the corresponding end in the connecting rod transmission mechanism.
the mechanical transmission mechanism is a connecting rod transmission mechanism extending along the up-down direction and specifically comprises a middle transmission plate 10, an upper transmission connecting plate 9 and a lower transmission connecting plate 11, the middle transmission plate 10 extends along the up-down direction and is assembled on a cabinet body side plate 13 of the cabinet body through a positioning guide plate 12 in a guiding manner, the positioning guide plate 12 is of a U-shaped structure, two side walls of the U-shaped structure are arranged along the up-down direction, two through holes are formed in the top wall, threaded holes corresponding to the through holes are formed in the cabinet body side plate 13, and the positioning guide plate 12 is fixed on the cabinet body side plate 13 through inserting bolts; two side walls of the positioning guide plate 12 are provided with through holes for the middle transmission plate 10 to pass through along the up-down direction. The upper end of middle driving plate 10 is articulated with last transmission link plate 9, the upper end of going up transmission link plate 9 is articulated with turning arm 8, the lower extreme of middle driving plate 10 is articulated with lower transmission link plate 11, lower transmission link plate 11 lower extreme articulates there is locking piece 15, when earthing switch operating axis 7 carries out the divide-shut brake operation, loop through last transmission link plate 9 by turning arm 8, middle driving plate 10 and lower transmission link plate 11 order about locking piece 15 and carry out reciprocating motion, and realize locking and unblock to preceding cable chamber door, it is corresponding, locking piece 15 has the separating brake completion position and the closing completion position that correspond with earthing switch divide-shut brake operation in reciprocating motion stroke. In addition, the whole connecting rod transmission mechanism is arranged in the vertical direction in a centralized manner, so that the occupied space in the switch cabinet is reduced.
As shown in fig. 4 to 9, the locking member 15 is mounted on the fixed bracket 14 in a reciprocating manner, as shown in fig. 12 and 13, the fixed bracket 14 includes a front vertical plate 141 and a rear vertical plate 143, the rear vertical plate 143 is provided with two through holes, the cabinet side plate 13 is provided with threaded holes corresponding to the through holes, and the fixed bracket 14 is fixed on the cabinet side plate 13 by inserting bolts; the front vertical plate 141 forms a front partition plate member, the fixing support 14 has two side vertical plates arranged in parallel, the two side vertical plates are provided with corresponding strip-shaped long grooves from top to bottom, the fixing support 14 further comprises a rear partition plate member 142 embedded in the two strip-shaped long grooves, each partition plate member is provided with a guide through hole 1411 and a through hole 1412 along the up-down direction, the guide through holes 1411 on the two partition plate members correspond to the through holes 1412 respectively, the guide through holes 1411 are arranged in a vertically staggered manner, and the guide through holes 1411 are located above the through holes 1412.
As shown in fig. 10, the locking member 15 includes a guide plate 151 and a locking plate 152, the guide plate 151 is in guiding engagement with the guide through hole 1411 of the two partition members, and the locking plate 152 can pass through the through hole 1412 of the two partition members for stopping engagement with the door interlocking plate 18. The locking member 15 is guided to reciprocate in the horizontal direction by the guide perforations 1411 of the two partition members, so that the reciprocating movement of the locking plate 152 as the locking portion in the locking member 15 is more stable and accurate. Further, the width of the lock plate 152 in the up-down direction is larger than the width of the guide plate 151 in the up-down direction, so that the stopper reliability of the lock plate 152 can be effectively ensured, and a weight-saving design can be realized by the guide plate 151 having a small width.
The two partition plates of the fixing bracket 14 form an interlayer while guiding the locking piece 15 to reciprocate, the interlayer is provided with a door locking piece 16 which can reciprocate along the left-right direction, the door locking piece 16 also moves in the horizontal direction, and the door locking piece 16 is arranged perpendicular to the locking piece 15, as shown in fig. 11, the door locking piece 16 is a bent piece and comprises an elbow 161, a locking stop part 162 and a plate body 163, as shown in fig. 14 to 17, one end of the plate body 163 close to the front cable chamber door 20 is fixed with a tension spring 17 extending in the left-right direction, one end of the tension spring 17 is connected with the plate body 163, and the other end of the tension spring is fixed on a side vertical plate of the fixing bracket 14 close to the front cable chamber door 20. The door latch 16 has a locking position for blocking and cooperating with the locking member 15 at the closing completion position to block the opening operation of the earthing switch operating shaft 7 and an unlocking position for avoiding the locking member 15 in its reciprocating stroke, and the tension spring 17 applies an elastic force to the door latch 16 to urge the door latch to the locking position.
a door interlocking plate 18 extending in the horizontal direction is provided on the front cable compartment door 20, the door interlocking plate 18 is in push-fit engagement with the door lock 16 during reciprocating movement, and the door interlocking plate 18 is arranged in parallel with the door lock 16 when the front cable compartment door is closed. As shown in fig. 18, the end of the door interlock plate 18 away from the front cable chamber door is a pushing end 181, the pushing end 181 forms an unlocking pushing portion, and the door interlock plate 18 further includes an upper protrusion 182 protruding upward. When the front cable chamber door of the switch cabinet is opened and the door unlocking piece 16 is in the locking position, the unlocking stopping part 162 of the door unlocking piece 16 shields the through hole of the rear partition plate piece 142, the locking piece 15 cannot penetrate through the through holes of the two partition plate pieces, and at the moment, the grounding switch cannot perform brake-off operation; when the front cable chamber door 20 of the switch cabinet is closed, the unlocking pushing part of the door interlocking plate 18 pushes the elbow 161 of the door locking piece 16 to move towards the direction (i.e. the unlocking direction) far away from the front cable chamber door 20, at this time, the locking stopping part 162 of the door locking piece 16 releases the shielding of the via hole on the rear partition plate 142, the locking piece 15 penetrates out of the via hole of the two partition plate pieces and is stopped by the locking plate 152 on the upper convex block 182 of the door interlocking plate 18, at this time, the front cable chamber door cannot be opened, and the grounding switch can complete the opening operation under the rotation of the grounding switch operating shaft 7. In the whole process, the elbow 161 forms an unlocking stop portion, which is used for pushing and matching with an unlocking pushing portion on the door interlocking plate 18, so that when the front cable chamber door 20 is closed, the door interlocking plate 18 pushes the door unlocking piece 16 to move towards unlocking displacement, and the unlocking operation of the locking piece 15 is realized.
The bottom of the front side of the fixed bracket 14 is further provided with a corner protection plate 19 arranged along the horizontal direction, as shown in fig. 12, 13, 19 and 20, one side of the corner protection plate 19 forms a step structure, the fixed bracket 14 is correspondingly provided with an embedding groove 1413 extending horizontally, the corner protection plate 19 is embedded in the embedding groove 1413 of the fixed bracket 14 through the step structure, when the front cable chamber door is closed, the corner protection plate 19 can be used for supporting the protection door interlocking plate 18, and the corner protection plate can be prevented from being deformed when the front cable chamber door is closed.
As shown in fig. 8 and 9, the lower end of the pushing end 181 of the door interlock plate 18 is further provided with a chamfer structure for lifting the door interlock plate 18 when the door interlock plate 18 contacts the corner protection plate 19, so as to prevent the door interlock plate 18 from colliding with the corner protection plate 19 and deforming when the front cable compartment door is closed.
The utility model discloses the cubical switchboard is at the during operation, and when earthing switch divide-shut brake operation was realized in the rotation of earthing switch operating axis 7, earthing switch operating axis 7 drove 15 reciprocating motion of locking piece through turning arm 8 and connecting rod drive mechanism simultaneously.
Specifically, when the front cable chamber door 20 is in a closed state, the pushing end 181 of the door locking member 18 pushes the elbow 161 of the door locking member 16 to move in a direction away from the front cable chamber door 20 (i.e., in an unlocking position), the locking stop portion 162 of the door locking member 16 releases the shielding of the through hole on the rear partition plate 142, at this time, the ground switch opening operation can be performed, when the ground switch operating shaft 7 rotates counterclockwise, the crank arm 8 presses the upper transmission link plate 9 downward, the upper transmission link plate 9 immediately presses the lower transmission link plate 10 downward, the intermediate transmission plate 10 moves downward along the positioning guide plate 12 and presses the lower transmission link plate 11 downward, the lower transmission link plate 11 presses the lock plate 152 of the lock member 15 to pass through the through holes of the two partition plates of the fixed bracket 14, the lock member 15 is not blocked, the normal opening of the ground switch is ensured, and, when the lock plate 152 of the lock member 15 passes through the through holes of the two partition plates to an opening completion position, and the upper convex block 182 of the door interlocking plate 18 is matched in a blocking way, at the moment, the front cable chamber door 20 cannot be opened, and the overhaul and maintenance personnel cannot enter the front cable chamber door 20 for operation, so that the safety is ensured.
When the front cable chamber door 20 is in a closed state, the grounding switch operating shaft 7 is driven to rotate clockwise, and then the corresponding closing operation can be realized. Specifically, the earthing switch operating shaft 7 is rotated clockwise, the crank arm 8 is lifted up, and the upper transmission connecting plate 9, the middle transmission plate 10 and the lower transmission connecting plate 11 sequentially drive the locking piece 15 to retract to a closing completion position from the through holes of the two partition plate pieces of the fixed bracket 14, the locking piece is matched with the stop of the upper convex block 182 and then released, the pushing action of the door interlocking plate 18 on the door unlocking piece 16 is also released, at the moment, the front cable chamber door is opened, the door unlocking piece 16 returns to the original position under the action of the elastic force of the tension spring 17, the unlocking stop part 162 of the door unlocking piece 16 shields the through hole on the rear partition plate piece 142, at the moment, the earthing switch is in a closing state and cannot be subjected to opening operation, and an overhaul maintainer can enter the front cable chamber to perform operation.
In this embodiment, the lower portions of the respective ends of the door interlock plate, which are remote from the front cable chamber door, are provided with chamfered structures. In other embodiments, no chamfer structure may be provided.
in this embodiment, a corner protection plate is provided on the fixing bracket, and the corner protection plate is used to support the door interlock plate when the front cable compartment door is closed. In other embodiments, the corner protection plate may not be provided.
In this embodiment, the locking member has a guide plate which is guided and fitted to the guide through holes of the two partition members, and a locking plate for passing through the through hole, the locking plate serving as the locking portion, and the locking plate has a width larger than that of the guide plate. In other embodiments, the width of the locking plate may not be greater than the width of the guide plate, although in other embodiments, no guide plate may be provided, and accordingly, the two partition plate members may not be provided with the guide through holes for the guide plate to pass through.
in this embodiment, door back-locking piece and locking piece are arranged perpendicularly, and in other embodiments, door back-locking piece also can not arrange perpendicularly with the locking piece, and the two can be certain inclination.
In this embodiment, the setting of two partition plate spare has made things convenient for arranging of door back-locking piece, and simultaneously, the guide of two partition plate spare is perforated and is guided the reciprocating motion of locking piece for the locking portion reciprocating motion of locking piece is more stable accurate. In other embodiments, the rear partition member may not be provided, but the reliability of the reciprocal movement of the locking member may be low.
in this embodiment, door latch-up spare and locking piece all at the reciprocating motion in the horizontal direction to both arrange perpendicularly, door interlocking board and door latch-up spare were arranged in parallel when preceding cable chamber door was closed simultaneously, not only made things convenient for door latch-up spare to realize the stop to locking piece, also made things convenient for the locking piece to realize the stop to door interlocking board. In other embodiments, the door locking member may also reciprocate in the vertical direction as long as locking and unlocking of the locking member can be ensured, for example, the door locking member may be provided with a corresponding pushing slope, when the front cable chamber door is closed, the door locking member is pushed by the door locking plate to move upward to avoid the locking member, and when the front cable chamber door is closed, the door locking member may be driven to move downward by the action of the tension spring to stop the locking member. In addition, in the present embodiment, a tension spring is used as the return elastic member, and in other embodiments, the return elastic member may also be in a compression spring structure. If the locking piece is arranged on the corresponding cabinet body, the reset elastic piece can also adopt a torsion spring structure.
In the present embodiment, the unlocking push-out portions are provided at respective ends of the door interlock plate away from the front cable chamber door. In other embodiments, the unlocking pushing portion may be disposed at a corresponding end of the door interlock plate close to the door of the front cable chamber, and at this time, one end of the door interlock member close to the door of the front cable chamber needs to be designed to be long, and at this time, the door interlock member may interfere with a structure on the door of the front cable chamber, and the reliability of the entire apparatus may be reduced.
In this embodiment, the corresponding end of the door-locking member is provided with an elbow for being in pushing fit with the unlocking pushing portion, and the elbow forms the unlocking stopping portion. In other embodiments, the corresponding end of the door locking piece may be provided with a through hole, and a connecting rod perpendicular to the door locking piece is inserted into the through hole, and forms an unlocking stop portion, so as to realize the pushing fit with the unlocking pushing portion of the door locking plate.
in this embodiment, the mechanical transmission mechanism arranged between the earthing switch operating shaft and the front cable chamber door in the interlock device is a link transmission mechanism, and the link transmission mechanism can transmit the action to the locking member synchronously when the earthing switch operating shaft performs the opening and closing operation. In other embodiments, the mechanical transmission mechanism may also adopt the cam, the first slide bar and the return spring mentioned in the patent document with the publication number CN205303291U, and the reciprocating movement of the locking member can be realized as well, but the structure must be provided with the return spring.
in this embodiment, the door locking member is a plate-shaped structure as a whole, and in other embodiments, the door locking member may also adopt a slide rod structure in patent document No. CN205303291U, and only needs to be provided with a corresponding unlocking stop portion on the slide rod for the unlocking pushing portion on the door locking plate to push and unlock.
Claims (8)
1. A switch cabinet with an earthing switch and a front cable chamber door arranged in an interlocking manner comprises a cabinet body, wherein the cabinet body is internally provided with an earthing switch and an earthing switch operating shaft, the lower part of the cabinet body is provided with a cable chamber and a corresponding front cable chamber door, an interlocking device is arranged between the earthing switch operating shaft and the front cable chamber door, the interlocking device locks the front cable chamber door when the earthing switch operating shaft is in a brake-off state so as to prevent the front cable chamber door from being opened, and locks the earthing switch operating shaft after the front cable chamber door is opened so as to prevent the earthing switch operating shaft from performing brake-off operation, the interlocking device comprises a locking piece and a door interlocking plate, the locking piece corresponds to the brake-off operation of the earthing switch operating shaft and is controlled to reciprocate by the earthing switch operating shaft through a mechanical transmission mechanism, the door interlocking plate is fixedly arranged on the inner side of the front cable chamber door, a, the locking piece is provided with a brake separating completion position and a switch closing completion position, wherein the brake separating completion position is matched with the door interlocking plate in a blocking mode on the reciprocating movement stroke of the locking piece so as to prevent the door of the front cable chamber from being opened, and the switch closing completion position is used for avoiding the door interlocking plate;
the interlocking device also comprises a door inverse locking piece which moves in a reciprocating mode, wherein the door inverse locking piece is provided with a locking position and an unlocking position, the locking position is used for stopping the locking piece at a closing completion position to prevent the grounding switch operating shaft from performing opening operation, the unlocking position is used for avoiding the locking piece, and the door inverse locking piece is connected with a resetting elastic piece which applies elastic acting force to the door inverse locking piece to force the door inverse locking piece to move towards the locking position;
The method is characterized in that: the door interlocking plate is provided with an unlocking pushing part used for pushing the door unlocking piece to move towards unlocking displacement when the door of the front cable chamber is closed, and the door unlocking piece is provided with an unlocking stopping part used for being matched with the pushing part of the door interlocking plate in a pushing mode.
2. the switchgear cabinet with interlocking arrangement of earthing switch and front cable compartment door according to claim 1, characterized in that: the unlocking push-up portion is provided at a corresponding end of the door interlock plate away from the front cable chamber door.
3. The switchgear cabinet with interlocking arrangement of earthing switch and front cable compartment door according to claim 2, characterized in that: and the corresponding end of the door unlocking piece is provided with an elbow which is used for being matched with the unlocking pushing part in a pushing manner, and the elbow forms the unlocking stopping part.
4. Switchgear cabinet with an interlocking arrangement of earthing switch and front cable compartment door according to any of claims 1 to 3, characterized in that: the door interlocking plate is positioned on the front side of the fixed support, a front partition plate and a rear partition plate which form an installation interval are arranged on the fixed support, guide through holes for guiding the locking piece to reciprocate are formed in the two partition plates, through holes for the locking part of the locking piece to pass through are further formed in the two partition plates, the door locking piece is arranged in the installation interval, and a locking stopping part for blocking the through holes in the rear partition plate when the door locking piece moves to a locking position is arranged on the door locking piece.
5. The switchgear cabinet with interlocking arrangement of earthing switch and front cable compartment door according to claim 4, characterized in that: the door interlock and the locking member are arranged vertically, and the door interlock plate is arranged in parallel with the door interlock when the front cable compartment door is closed.
6. the switchgear cabinet with interlocking arrangement of earthing switch and front cable compartment door according to claim 4, characterized in that: the guide through holes and the via holes in the two partition plates are arranged in a staggered mode in the vertical direction, the locking piece is provided with a guide plate which is in guide fit with the guide through holes in the two partition plates and a locking plate which is used for penetrating through the via holes, the locking plate serves as the locking part, and the width of the locking plate in the vertical direction is larger than that of the guide plate in the vertical direction.
7. Switchgear cabinet with an interlocking arrangement of earthing switch and front cable compartment door according to any of claims 1 to 3, characterized in that: and the fixed support is provided with a corner protection plate which is used for supporting the door interlocking plate when the front cable chamber door is closed.
8. The switchgear cabinet with interlocking arrangement of earthing switch and front cable compartment door according to claim 7, characterized in that: and the lower part of the corresponding end of the door interlocking plate, which is far away from the front cable chamber door, is provided with a chamfer structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920349937.8U CN209747373U (en) | 2019-03-19 | 2019-03-19 | Switch cabinet with earthing switch and front cable chamber door arranged in interlocking manner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920349937.8U CN209747373U (en) | 2019-03-19 | 2019-03-19 | Switch cabinet with earthing switch and front cable chamber door arranged in interlocking manner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209747373U true CN209747373U (en) | 2019-12-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920349937.8U Active CN209747373U (en) | 2019-03-19 | 2019-03-19 | Switch cabinet with earthing switch and front cable chamber door arranged in interlocking manner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209747373U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114050070A (en) * | 2021-10-13 | 2022-02-15 | 许继集团有限公司 | Interlocking device for cable chamber door of high-voltage switch cabinet |
| CN114496642A (en) * | 2022-01-12 | 2022-05-13 | 平高集团有限公司 | Interlock device of grounding switch and cable chamber door of gas-filled cabinet and gas-filled cabinet |
-
2019
- 2019-03-19 CN CN201920349937.8U patent/CN209747373U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114050070A (en) * | 2021-10-13 | 2022-02-15 | 许继集团有限公司 | Interlocking device for cable chamber door of high-voltage switch cabinet |
| CN114050070B (en) * | 2021-10-13 | 2024-05-14 | 许继集团有限公司 | High tension switchgear cable room door interlock |
| CN114496642A (en) * | 2022-01-12 | 2022-05-13 | 平高集团有限公司 | Interlock device of grounding switch and cable chamber door of gas-filled cabinet and gas-filled cabinet |
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