CN107959343B - Dual-power transfer switch - Google Patents
Dual-power transfer switch Download PDFInfo
- Publication number
- CN107959343B CN107959343B CN201710184189.8A CN201710184189A CN107959343B CN 107959343 B CN107959343 B CN 107959343B CN 201710184189 A CN201710184189 A CN 201710184189A CN 107959343 B CN107959343 B CN 107959343B
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- door plate
- driving
- linkage
- plate
- front door
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- 238000012546 transfer Methods 0.000 title claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 167
- 230000008093 supporting effect Effects 0.000 claims abstract description 73
- 230000009471 action Effects 0.000 claims abstract description 29
- 238000013519 translation Methods 0.000 claims abstract description 15
- 238000005452 bending Methods 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000009413 insulation Methods 0.000 claims description 20
- 230000009977 dual effect Effects 0.000 claims description 13
- 210000001503 joint Anatomy 0.000 claims description 5
- 238000013461 design Methods 0.000 abstract description 11
- 230000033001 locomotion Effects 0.000 description 20
- 239000012212 insulator Substances 0.000 description 15
- 230000001360 synchronised effect Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/02—Details
- H02B11/04—Isolating-contacts, e.g. mountings or shieldings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Patch Boards (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention discloses a double-power transfer switch, wherein a bracket with a vertical beam is arranged in the middle, two L-shaped busbar integrated insulating contact boxes are respectively and fixedly arranged at two sides of the top of the bracket, a supporting mechanism of each insulating contact box comprises an upright post fixedly arranged at the bending part of each insulating contact box, lifting mechanisms arranged at two sides of the vertical beam of the bracket, a translation driving type protection mechanism, and an insulating valve comprises a front door plate and a rear door plate which are arranged in parallel and driven by racks fixedly connected with the front door plate and the rear door plate in a same-direction asynchronous or different-direction translation way, and a mechanical interlocking mechanism. The invention sets the actuating mechanism on the liftable supporting plate, fully utilizes the height space, simplifies the actuating mechanism, adopts the front door plate and the rear door plate which are led to move and are arranged at intervals front and back, adopts the mode of stacking front and back, effectively saves the design space of the valve, realizes the miniaturization of the actuating mechanism, has reasonable structure, realizes the corresponding overlapping or staggering of the through holes by utilizing the action control of intermittent driving translation of the front door plate and the rear door plate by the handcart, effectively ensures the safety, and has simple realization and reliable action.
Description
Technical Field
The invention relates to the technical field of dual-power transfer switch equipment and a switch cabinet thereof, in particular to a dual-power transfer switch with a removable lifting type actuating mechanism.
Background
Along with the increasing requirements of the market on the continuity of a power supply system, the known power distribution technical field, particularly important loads, generally adopt a double-circuit power supply to supply power, the double-power automatic charging and switching device also appears, and because of the voltage insulation problem, the automatic switching of the power supply is basically carried out on the low-voltage side of the power supply system, however, the power supply load is larger and larger, the maximum switching current of the low-voltage double-power switching device is 6300A, the maximum switching capacity is 4500KW, the requirements of important power supply places with large loads can not be met, the high-voltage power switching is a technical development trend, the prior art generally adopts two high-voltage switch cabinets, the size is large, the mechanical linkage is difficult to realize, the fault rate is high, and therefore, the design of the high-voltage integrated automatic switching switch is very necessary.
Disclosure of Invention
The invention aims at overcoming the technical defects in the prior art and provides a dual power supply with a lifting actuating mechanism capable of moving away.
The technical scheme adopted for realizing the purpose of the invention is as follows:
A dual power transfer switch includes
A bracket with a vertical beam is arranged in the middle,
two L-shaped busbar integrated insulation contact boxes which are respectively and fixedly arranged at two sides of the top of the bracket, a supporting mechanism of the insulation contact boxes comprises upright posts which are fixedly arranged at bending positions of the insulation contact boxes,
the lifting mechanism comprises a supporting plate capable of vertically lifting, two splayed support arms hinged below the supporting plate, a bottom rail matched with the lower end of the support arm and fixedly connected with the support, and a ball screw type driving unit for directly driving the supporting plate to lift or driving the lower end of the support arm to open and close, wherein the two supporting plates are respectively provided with 3 side wire-outgoing polar posts, corresponding actuating mechanisms and a handcart for carrying the same,
the translation driving type insulation valve protection mechanism comprises a linkage pin fixedly arranged on one side of the supporting plate and extending horizontally, a sector gear rotatably fixedly arranged on the bracket and provided with a guide groove matched with the linkage pin, and a rack meshed with the sector gear and fixedly connected with the insulation valve,
The insulation valve comprises a front door plate and a rear door plate which are arranged in parallel and driven by racks fixedly connected with the front door plate and the rear door plate in a same-direction asynchronous or different-direction translational motion, through holes corresponding to a main bus are respectively formed in the front door plate and the rear door plate, the front door plate and the rear door plate are driven to be positioned at the positions corresponding to the front and the rear of the through holes when in an opening position, and the front door plate and the rear door plate are driven to move in the same direction asynchronously when in a closing position, and the through holes of the front door plate and the rear door plate are staggered to seal the through holes by using a non-hole position;
the mechanical interlocking mechanism comprises a push block which is slidably or rotatably arranged on one of the actuating mechanisms and is in linkage with a main shaft or an operating mechanism or a main contact of the actuating mechanism; the linkage mechanism is arranged on the vertical beam and comprises a driving part which is movably arranged on the vertical beam and acts with the pushing block, and a linkage part which is in transmission connection with the driving part; the ejector rod can be interfered with the linkage part and is vertically arranged at the top of the actuating mechanism, a reset spring is arranged between the ejector rod and the actuating mechanism, and the lower end of the reset spring is inserted into the actuating mechanism and is locked when the lower end of the reset spring is acted by the linkage part.
The supporting mechanism of the insulating contact box further comprises a rear upright post fixedly arranged at the rear end of the insulating contact box, a side baffle plate for connecting the upright post and the rear upright post, a bottom support bar fixedly connected with the side baffle plate and used for supporting the horizontal part of the insulating contact box, and an inclined support fixedly connected with the vertical part of the insulating contact box, wherein the inclined support comprises a side connecting plate fixedly connected with the vertical part of the contact box, and two ends of the inclined support are respectively connected with the side connecting plate and the upright post through inclined connecting rods fixedly connected with bolts.
The locking mechanism is used for locking the lower ends of the two support arms to prevent the two support arms from being separated, the lower ends of the support arms are provided with sliding blocks matched with the bottom rails so as to realize sliding fit of the lower ends of the support arms relative to the bottom rails, the locking mechanism comprises strip-shaped ratchets fixedly arranged on the sliding blocks and extending along the rail direction, ratchet fingers which are rotatably fixed relative to the support and correspond to the ratchets, and an operating rod which can drive the ratchet fingers to synchronously turn inwards or outwards so as to keep or separate from contact with the ratchets.
The locking mechanism comprises a rotating rod extending along the bottom track direction, at least one pair of locking parts arranged on the rotating rod, and the locking parts can lock or release the lower ends of the support arms by rotating the rotating rod.
The sector gear comprises a large pitch circle radius sector gear and a small pitch circle radius sector gear which are coaxially arranged, a front door plate and a rear door plate are respectively connected with racks of the large pitch circle radius sector gear and the small pitch circle radius sector gear in a meshed mode and are correspondingly and fixedly connected with each other to realize synchronous driving, the guide groove comprises a front sliding section and a middle linkage section, an action part can drive the sector gear to rotate when the linkage pin is positioned in the middle linkage section, the front sliding end cannot drive the sector gear to rotate, the front door plate and the rear door plate are driven to horizontally translate, a movable supporting mechanism is arranged between the inner sides of the front door plate and the rear door plate respectively, and a plurality of guide supporting grooves corresponding to the front door plate and the rear door plate are formed in the inner side face of the side connecting plate.
The driving mechanism of the front door plate and the rear door plate comprises racks which are fixedly connected or integrally formed with the front door plate or the rear door plate respectively and extend along the moving direction, gears which are arranged corresponding to the racks and have different diameters or are meshed with the two racks simultaneously, and a driving part for driving the gears to rotate.
The linkage mechanism comprises a driving rack which is slidably arranged on the vertical beam and acts with the pushing block, a linkage rack which is slidably arranged on the vertical beam and is connected with the driving rack through intermediate gear transmission, and a reset mechanism which is arranged between the top of the linkage rack and the vertical beam, wherein the ejector rod is fixedly connected with the linkage rack.
The linkage mechanism comprises a driving sliding block which can slide or rotate relative to the vertical beam and is in transmission connection with the driving sliding block through a chain, a transmission rope or a push rod, and the ejector rod is fixedly connected with the linkage sliding block.
The outer side surface of the actuating mechanism is provided with a rotary table in transmission connection with the main shaft, the push block is arranged on the actuating mechanism through a track sliding block mechanism, the push block is in transmission connection with the rotary table through a connecting rod, and the push block is used for pushing a linkage mechanism of the mechanical linkage mechanism to lock the corresponding actuating mechanism.
The front end or one side of the supporting plate is provided with a limiting part, the rear side surface of the limiting part is an inclined surface with the upper side edge protruding forwards, a butting part matched with the limiting part is formed on the handcart, the front side surface of the butting part is an inclined surface corresponding to the inclined surface, and the limiting part is directly connected with a grounding point through a wire.
Compared with the prior art, the invention has the beneficial effects that:
aiming at the defects of the prior art, the invention relates to a removable integrated automatic conversion electric appliance element, which has reasonable structure, adopts a modularized design, and arranges an actuating mechanism on a lifting supporting plate by a removable vacuum operating mechanism, fully utilizes the height space, simplifies an actuating mechanism, adopts a front door plate and a rear door plate which are led to move and are arranged at intervals front and back, adopts a front and back stacking mode, effectively saves the design space of a valve, realizes the miniaturization of a driving mechanism, has reasonable structure, realizes the corresponding overlapping or staggering of through holes by using the intermittent driving and translation motion control of a handcart by using the front door plate and the rear door plate, effectively ensures the safety, and has simple realization and reliable action. According to the invention, the busbar is integrally coated in the insulator, positioning and insulation are realized on the busbar by using the insulator, the use safety is improved, the busbar is directly connected with the wire inlet end and the wire outlet end, for example, the busbar is integrally formed or welded, the threaded connection is reduced, the insulation treatment difficulty of the connection part is reduced, particularly, the busbar is cast after being connected with the wire inlet end and the wire outlet end, the connection part is naturally shielded, the post treatment difficulty is reduced, and the reliability is improved.
Drawings
FIG. 1 is a front view of a dual power supply of the present invention;
FIG. 2 shows a side view of a dual power supply of the present invention;
FIG. 3 is a schematic side view of the busbar integrated insulated contact box of the present invention;
fig. 4 is a schematic perspective view showing the structure of the busbar integrated insulation contact box of the present invention;
FIG. 5 is a schematic view of the front door panel;
FIG. 6 is a side view of the shutter mechanism;
FIG. 7 is a schematic view of the lifting mechanism of the present invention;
FIG. 8 is a schematic side view of the structure of FIG. 1;
FIG. 9 is a schematic view showing the action of the ratchet teeth and the ratchet fingers;
fig. 10 shows a schematic structure of the limiting portion and the abutting portion.
Fig. 11 is a schematic structural view of a mechanical interlocking mechanism left-side actuator of the dual-power supply device in an off state.
Fig. 12 is a schematic structural diagram of a closing state of an actuator on the left side of a mechanical interlocking mechanism of the dual-power supply device of the present invention.
Fig. 13 is a schematic view of a pallet and sector gear linkage.
Figure 14 is an enlarged schematic view of part a of figure 8,
fig. 15 is a partially enlarged schematic view of the portion B shown in fig. 8.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1-15, the dual-power transfer switch of the invention comprises a bracket 1 with a vertical beam 11 in the middle, two busbar integrated insulated contact boxes correspondingly and fixedly arranged at two sides, two lifting mechanisms arranged at two sides of the bracket, a handcart which is arranged on a supporting plate of the lifting mechanism and carries a plurality of side outgoing type polar posts 70 and actuating mechanisms, a movable open-close type high-voltage insulated valve and two groups of mechanical interlocking mechanisms for realizing linkage of the two actuating mechanisms; the busbar integrated insulation contact box comprises three busbars 81, 82 and 83 which are arranged at intervals and are covered by an insulator, an incoming wire end 84 and an outgoing wire end 85 which are respectively and correspondingly arranged at two ends of the busbar and the outer ends of which are exposed from the insulator, and a contact box 86 which is arranged corresponding to the incoming wire end and is in one-to-one correspondence with the side outgoing wire pole and is integrally formed or fixedly connected with the insulator, such as bonding; the wire inlet end 84 is also plate-shaped and extends a predetermined distance to be exposed out of the insulator so as to be used as a fixed contact and a movable contact to realize electric connection. The insulator is made of glass fiber, epoxy resin or other insulating materials, and the busbar and the insulator are integrally poured or coated in other modes.
The lifting mechanism comprises a supporting plate 2 driven to vertically lift relative to a bracket 1, two splayed support arms 3 hinged to the middle part below the supporting plate, a bottom rail 13 matched and connected with the lower ends of the support arms 3 and fixedly connected with a horizontal part 12 of the bracket, and a locking mechanism for locking the lower ends of the two support arms to prevent the two support arms from being separated. The cooperation of cantilever lower extreme and bottom track can adopt multiple mode, like embedded gyro wheel and the cooperation of groove etc. can all realize the relative bottom track of cantilever lower extreme and follow its axial removal.
The lower ends of the support arms are provided with sliding blocks 31 matched with the bottom rails so as to realize sliding fit of the lower ends of the support arms relative to the bottom rails, for example, the bottom rails are sliding rails, the lower ends of the support arms are hinged with the sliding blocks matched with the sliding rails, the lower ends of the support arms are matched and connected with the lower ends of the support arms by utilizing the bottom rails, when the support plates lift, the lower ends of the two support arms relatively and reversely move synchronously, namely fold or separate, and when the support plates lift to a preset height, the lower ends of the support plates are locked by the locking mechanism so as to ensure that the positions of the support plates do not change.
The handcart is arranged on the supporting plate and is provided with a plurality of side wire outlet type polar posts and an executing mechanism, the executing mechanism is arranged on the supporting plate which can be lifted, and meanwhile, a walking groove 21 is arranged on the supporting plate for guiding the handcart to run. Fully utilizes the height residual space, effectively reduces the requirement of the longitudinal depth of the cabinet body, improves the environmental adaptability, simplifies the action mechanism, and in order to ensure that the actuating mechanism is linked up and down when the supporting plate is lifted, the actuating mechanism is fixedly arranged on the handcart, the two sides or the end parts of the supporting plate are provided with limit parts 40, the power supply device of the dual-power transfer switch is characterized in that the power supply device is internally provided with a butt joint part 50 matched with the limiting part, wherein the side close to an operator is used as the back, the side far away from the operation side is used as the front, the rear side of the limiting part is an inclined surface with the upper side protruding forwards, and the front side of the butt joint part is an inclined surface corresponding to the inclined surface. The spacing portion and the butt joint portion are formed with the mechanism of pegging graft mutually, constitute the company and interfere on vertical face when can effectively realizing accurate positioning, can downwards pull the synchronous downward movement of handcart, improve the smoothness nature of action, simultaneously, the spacing portion of layer board is with wire and elevating system's ground point direct link to each other, satisfies ground connection protection requirement, ensures operation security.
The translation driving type protection mechanism comprises a linkage pin fixedly arranged on one side of the supporting plate and extending horizontally, a sector gear rotatably fixedly arranged on the bracket and provided with a guide groove matched with the linkage pin, and a rack meshed with the sector gear and fixedly connected with the insulating valve,
the translational open-close type insulation valve 100 comprises a front door plate 91 and a rear door plate 92 which are arranged in parallel and move in the same direction in an asynchronous manner or in the opposite direction in a synchronous manner when driven, through holes 93 which correspond to the positions of a main bus bar and a bus bar row and allow contacts to pass through are respectively formed in the front door plate and the rear door plate, wherein the front door plate and the rear door plate are of a Z-shaped structure as a whole and respectively comprise a top flat plate and an L-shaped side plate which is integrally formed or fixedly connected with the top flat plate, through holes which can be matched with the top contacts 71 allowing the upper ends of side outgoing type poles to pass through are formed in the top flat plate, so that the top contacts are conducted or disconnected with the contact boxes 94 of the main bus bar, L-shaped through holes are formed in the L-shaped side plates so as to correspond to the actions of the lower contacts 72 which are arranged at the end parts of the inclined sections 73 and correspond to the contact boxes of the bus bar row 90, and the L-shaped side plates are used for realizing the stroke of the L-shaped side plates. The front door plate and the rear door plate can translate in any direction according to specific working conditions, such as driven horizontal or vertical translation. When the connection is needed, namely when the top contact 71 is conducted with the contact box 94 of the main bus and the bottom contact 72 and the contact box of the bus bar 90 are conducted, namely when the pole on the supporting plate is conducted with the main bus and the bus bar, the front door plate and the rear door plate on the side are driven to be positioned at the positions corresponding to the front and the rear of the through holes, at the moment, the top contact and the bottom contact on the pole penetrate through the overlapped through holes on the front door plate and the rear door plate to be connected with the main bus or the bus bar, and when the disconnection is needed, namely when the top contact is disconnected with the main bus and the bottom contact and the bus bar are disconnected, the front door plate and the rear door plate are driven to move so as to stagger the through holes to realize the closing of the space where the main bus and the bus bar are located, namely, the through holes on the front door plate and the rear door plate are arranged in a staggered mode, and the connection ends of the main bus and the bus bar are shielded completely. The front door plate and the rear door plate are arranged at intervals, and the front door plate and the rear door plate are stainless steel plate bodies or insulating plates.
The side-outlet type pole can be disclosed in chinese patent CN106024499a, and is not described herein.
The mechanical interlocking mechanism comprises a push block which is slidably or rotatably arranged on one of the actuating mechanisms and is in linkage with a main shaft or an operating mechanism or a main contact of the actuating mechanism; the linkage mechanism is arranged on the vertical beam and comprises a driving part which is movably arranged on the vertical beam and acts with the pushing block, and a linkage part which is in transmission connection with the driving part; the ejector rod can be interfered with the linkage part and is vertically arranged at the top of the actuating mechanism, a reset spring is arranged between the ejector rod and the actuating mechanism, and the lower end of the reset spring is inserted into the actuating mechanism and is locked when the lower end of the reset spring is acted by the linkage part. The dead position of the ejector rod is the rear part of the connecting rod of the rotating shaft of the actuating mechanism, so that the rotating action of the connecting rod when the key is pressed down is prevented, and the actuating mechanism is effectively prevented from being touched by mistake. The ejector rod is pressed downwards by the linkage part, so that the action control is smoother.
According to the invention, the busbar is integrally coated in the insulator, positioning and insulation are realized on the busbar by using the insulator, the use safety is improved, the busbar is directly connected with the wire inlet end and the wire outlet end, for example, the busbar is integrally formed or welded, the threaded connection is reduced, the insulation treatment difficulty of the connection part is reduced, particularly, the busbar is cast after being connected with the wire inlet end and the wire outlet end, the connection part is naturally shielded, the post treatment difficulty is reduced, and the reliability is improved. The invention sets the actuating mechanism on the liftable supporting plate, fully utilizes the height space, simplifies the actuating mechanism, adopts the front door plate and the rear door plate which are led to move and are arranged at intervals front and back, adopts the mode of stacking front and back, effectively saves the design space of the valve, realizes the miniaturization of the actuating mechanism, has reasonable structure, realizes the corresponding overlapping or staggering of the through holes by utilizing the action control of intermittent driving translation of the front door plate and the rear door plate by the handcart, effectively ensures the safety, and has simple realization and reliable action.
The lifting mechanism is arranged on the lifting supporting plate, so that the height space is fully utilized, the action mechanism is simplified, and the front door plate and the rear door plate to be driven are synchronously driven by utilizing the linkage of the lifting mechanism and the front door plate and the rear door plate, so that the lifting mechanism is convenient for integral design, and the use safety is particularly improved. The front door plate and the rear door plate which move in the same direction and are arranged at intervals front and back are stacked front and back and move horizontally, so that the design space of the valve is effectively saved, miniaturization is achieved, the structure is reasonable, the front door plate and the rear door plate are utilized to control actions in the same direction and not in synchronization, corresponding overlapping or staggering of the through holes is achieved, safety is effectively guaranteed, simplicity is achieved, and the actions are reliable.
Specifically, the insulator includes an incoming end 810 and an outgoing end 820 that correspond to and form an included angle with the incoming and outgoing ends. The included angle is an acute angle, a right angle or a flat angle, and the shapes of the busbar and the insulator can be any adaptive shape so as to improve the field adaptability of the busbar and the insulator.
Taking the line inlet end 810 and the line outlet end 820 as examples, the width of the line outlet end 820 is larger than that of the line inlet end, and the creepage walls 821 are formed on two sides of the line outlet end, the line outlet end 85 is arranged on a connection panel 822 between the two creepage walls, a step or an inclined surface is formed on the connection panel, and the line outlet end is correspondingly arranged on the step surface or the inclined surface.
Adopt the great play line end of width and set up creepage wall in both sides, when improving the insulativity, because increased the installation space of play line end, be convenient for operate when being connected with the cable electricity, improve convenient to use. Particularly, the steps are arranged, and the steps which protrude forwards from bottom to top in sequence provide larger operation space and adaptability for the subsequent installation of the cable. Meanwhile, in order to improve the insulativity of three busbar at the bending position, the busbar 83 at the inner side is inwards bent in a step shape, the bending position of the busbar 82 at the middle is obliquely arranged, the busbar 81 at the outer side is bent at a right angle, the three are matched, and the whole volume is reduced while the insulation distance between every two is ensured.
Specifically, for the location installation with the cabinet is internal, the supporting mechanism of insulating contact box includes the stand 900 of fixed setting in insulating contact box department of bending, the rear column of fixed setting in insulating contact box rear end, the side shield 930 of connecting stand and rear column, with side shield fixed connection be used for supporting insulating contact box horizontal part's bottom support strip to and with insulating contact box's vertical part fixed connection's bearing diagonal 910, the bearing diagonal include with contact box's vertical part fixed connection's side connecting plate, both ends respectively with side connecting plate and stand pass through bolt fixed connection's inclined connection pole. Simultaneously, the mounting side of the insulator corresponding to the upright post or the bottom support bar is provided with a caulking groove 87 corresponding to the frame body of the positioning frame, and the cooperation of the caulking groove can ensure that the plane of the inner side is relatively smooth after mounting, so that the space occupation is reduced, and meanwhile, the insulator is fixedly provided with a fixed mounting hole so as to be connected with the positioning frame through bolts. The bending part is adopted for supporting, the horizontal part is supported by the bottom support bar, the vertical part is supported by the inclined support, and the force is applied to each point uniformly, so that the deformation of the contact box is reduced, the conditions of eddy heating and the like caused by the cage type support are avoided, and the electricity safety is ensured.
Meanwhile, in order to ensure the movement of the insulating valve, the upright post fixed part is provided with an avoidance opening, and meanwhile, the inner wall surface of the avoidance opening is provided with a guide supporting groove for guiding the movement of the insulating valve, namely the front valve and the rear valve.
Preferably, a groove 88 is formed between the opening sides of the two adjacent contact boxes, and a connecting bolt is arranged on the bottom surface of the groove, so that the creepage distance is increased and the depth of the contact boxes is reduced by adopting the groove design. Meanwhile, in order to match with the contact box with large depth, a notch 89 is formed on the side surface of the opening side of the contact port and the side surface of the pole so that the movable contact of the pole can be inserted into and electrically connected with the movable contact. The outer surface of the contact box is covered with a layer of conductive material or semiconductor material to improve electromagnetic interference resistance and reduce electromagnetic interference to the outside when the movable contact and the fixed contact are connected or disconnected.
Specifically, the lifting linkage valve device is used for a dual-power supply device, an executing mechanism and the like are respectively arranged on the supporting plate, the executing mechanism is used for connecting or disconnecting the main bus, such as a circuit breaker and the like, meanwhile, for enhancing the supporting strength, the supporting plate and the driving beam are of an L shape, and reinforcing plates are arranged at the lower part or at the two sides so as to improve the bearing capacity and ensure the stability and strength.
Preferably, in order to ensure the reliability of the contact conduction between the inclined surface and the slope surface, a concave cavity is formed in the inclined surface, a conductive plate 42 is arranged in the concave cavity, and a spring 41 is arranged on the back of the conductive plate to support the conductive plate. Guide mechanisms, such as connection lugs matched with the pins, are arranged between the two sides of the conducting plate and the limiting part. The conductive plate which is used as the contact and can be held by the contact spring can be protruded out of the inclined plane and can be flush with the inclined plane, so that under the normal condition, the inclined plane and the inclined plane can keep good conductive contact, when accidents such as vibration and inclination occur, if gaps and the like exist between the limiting part and the abutting part, the electrical conduction between the limiting part and the abutting part can still be kept by the holding of the spring, and the conductive plate has small contact resistance, so that the effective grounding can be ensured.
The driving mechanism of the supporting plate 2 comprises a driving rod 4, a speed changer 5, such as a worm gear and a worm, which is in transmission connection with the driving rod, a lifting screw rod 6, which is in transmission connection with an output shaft of the speed changer, a driving beam 20, which is provided with a lifting nut matched with the lifting screw rod, and a guiding mechanism, which is correspondingly arranged between the driving beam and a bracket, wherein the driving rod is driven by a hand wheel or a motor, the driving rod can be horizontally arranged or vertically arranged, and the like, the driving rod is combined with the speed changer and is matched with the lifting screw rod and the lifting nut to realize stable lifting of the supporting plate, and the guiding mechanism is a guide rail sliding block mechanism arranged between the driving beam and the bracket and provides high-precision guiding by using a linear guide rail to ensure running stability.
The screw rod is a left-right screw rod, so that synchronous opposite movement of the lower ends of the two support arms can be realized, the left-right screw rod has better self-locking effect, and the bearing stability is improved.
The supporting plate is fixedly connected with the driving beam, the driving beam is L-shaped, a horizontal table protrudes from the side surface of the bottom of the driving beam, and the lifting nut is fixed on the horizontal table. The L-shaped driving beam is adopted, the bearing capacity is strong, and the supporting plate is transversely arranged on the driving beam, so that the stability and the strength are ensured
Preferably, the locking mechanism for locking the lower ends of the two arms to prevent the two arms from being separated comprises an elongated ratchet 14 fixedly arranged on the sliding block and extending along the track direction, a ratchet finger 32 rotatably fixed relative to the bracket and corresponding to the ratchet, and a control rod 33 capable of driving the ratchet finger to synchronously turn inwards or outwards to keep or separate from the ratchet. The ratchet finger and the ratchet are matched to lock the support arm in real time when the lifting mechanism ascends, namely, the ratchet finger and the ratchet form a one-way locking mechanism. The ratchet finger ratchet mechanism is similar to ratchet teeth, the ratchet finger of the invention is equivalent to ratchet teeth in the ratchet teeth, and the ratchet teeth of the invention are equivalent to ratchet teeth after linear expansion in the ratchet teeth.
Specifically, the center of the bracket is taken as the inner side, the two ends of the bracket are taken as the outer sides, the ratchet teeth are positioned above the ratchet fingers, the outer side surfaces of the ratchet teeth are vertical surfaces or inner inclined surfaces, namely the upper ends of the outer side surfaces incline inwards, and the inner side surfaces are cambered surfaces or sloping surfaces. The inner side surface of the ratchet finger is a slope or an arc surface so that the teeth of the ratchet are swept from the ratchet finger when the ratchet finger descends, the outer side surface of the ratchet finger corresponds to the teeth of the ratchet finger so as to be inserted into the teeth, for example, the outer side surface of the ratchet finger is a plane and the like, meanwhile, the ratchet finger is arranged on the bracket through the rotating shaft, and an elastic mechanism such as a coil spring and the like is arranged between the ratchet finger and the bracket so as to keep the ratchet finger in fit contact with the outer side surface of the teeth of the ratchet finger. The length of the ratchet is not longer than the travel of the support arm relative to the track so that the ratchet fingers at the two ends rotate and reset to play a role in protecting the whole course, and of course, half or one third of the end travel can be adopted so as to provide protection and locking at or near the highest point. Preferably, arc-shaped recesses are formed at the outer side of the tooth root portion of the outermost ratchet tooth and the inner side of the tooth root portion of the innermost ratchet tooth, respectively, so that the ratchet fingers are rotated.
When the ratchet fingers are arranged at the highest lifting position, the middle part of the track is taken as the center, the teeth at the outermost ends of the two ratchet teeth are just meshed with the ratchet fingers, and the coil springs between the ratchet teeth and the support ensure effective contact and lamination of the ratchet teeth and the support, so that stable support is realized. Simultaneously, the ratchet can be effectively prevented from outwards overturning when the driving rod drives, the contact is relieved and the ratchet is convenient to descend, in order to realize that the control rod drives the ratchet fingers to synchronously outwards overturn, the upper part and the lower part of the rotating shaft corresponding to the two ratchet fingers are respectively provided with long grooves, the control rod is linked with the long grooves through the deflector rod, so that synchronous inwards or synchronously outwards rotating control of the control rod on the ratchet fingers can be realized, meanwhile, a guide bin is further arranged between the control rod and the support, and a reset spring is arranged between the guide bins, so that the quick reset is ensured.
In the lifting process of the supporting plate, the ratchet moves along with the slide block 31 matched with the bottom rail, the ratchet finger matched with the ratchet is rotatably and fixedly arranged on one side of the bottom rail 13 and keeps interference with the ratchet, the ratchet and the ratchet finger realize real-time self-locking, and the supporting effect of the splayed support arm 3 in the lifting process is ensured. When the supporting plate is lifted to a proper position, the locking mechanism acts and locks the two supporting arms to prevent the two supporting arms from being separated, and the locking mechanism, the ratchet and the ratchet finger realize double locking protection. The support plate is supported by the two support arms which are distributed in the splayed shape, the pressure of the driving mechanism is effectively buffered, the supporting force is strong and stable, meanwhile, the support plate is ensured not to displace, and the support plate is ensured to be absolutely stable and reliable in the case of generating large short-circuit current or being used for places with vibration.
The locking mechanism comprises a rotating rod extending along the bottom track direction, at least one pair of rod-shaped or block-shaped locking parts arranged on the rotating rod, and the locking part can lock or release the lower end of the support arm by rotating the rotating rod. The rotary rod can be arranged at one side or the lower part of the middle part of the bottom track, the rotary rod is directly unscrewed when the supporting plate moves in the vertical direction, when the supporting plate moves to a preset position, the rotary rod is unscrewed, the lower ends of the two supporting arms are limited between the two locking parts, namely, stable limit is formed, and the problem that the screw nut cannot be well self-locked when in vibration can be effectively solved. Through the arrangement of the plurality of pairs of locking parts, the locking parts can be fixed at any height setting position, so that the on-site maintenance or the part replacement is convenient.
The translation driving type protection mechanism comprises a linkage pin 200 arranged on one side of the supporting plate, a sector gear 300 rotatably and fixedly arranged on a bracket through a rotating shaft 320 and provided with a guide groove 310 matched with the linkage pin, and a rack 110 meshed with the sector gear and fixedly connected with a translation opening and closing type insulation valve. The guide groove comprises a front sliding section and a middle linkage section which are communicated and smoothly transition, and preferably further comprises a rear linkage section, wherein the action part can drive the sector gear to rotate only when the linkage pin is positioned in the middle linkage section. The specific shape of the guide groove is matched with the movement direction and the movement size of the conductive element, so that any intermittent movement can be realized, and the guide groove can be L-shaped, linear, arc line, various curves and other arbitrary shapes.
The front door plate and the rear door plate can translate in any direction according to specific working conditions, such as driven horizontal or vertical translation.
The invention adopts the two-section or multi-section design of the guide groove, realizes the intermittent driving of the supporting plate to the part to be driven, provides translational power by utilizing the high-precision driving mechanism of the sector gear and the rack, and can be effectively used in the opening process of the valve, thereby saving the space of the valve, realizing miniaturization, having reasonable structure, simple realization and reliable action.
Specifically, in order to realize the driving, the sector gear comprises a large pitch circle radius sector gear and a small pitch circle radius sector gear which are coaxially arranged, and a rack which is respectively meshed and connected with the large pitch circle radius sector gear and the small pitch circle radius sector gear is fixedly connected with the corresponding rack so as to realize the same-direction asynchronous driving. The sector gears with two different pitch radii are utilized to realize the synchronous movement of the front door plate and the rear door plate in the same direction and realize the respective translation driving.
As another specific embodiment, the adjacent sides of the front door plate and the rear door plate are provided with linked racks, a transmission gear meshed with the linked racks is arranged between the linked racks, and the front door plate or the rear door plate is provided with racks meshed with the sector gear. One of the front door plate or the rear door plate is driven by a group of sector gears and racks, and then the other door plate is linked with the front door plate or the rear door plate, so that larger motion performance in a small stroke can be realized, a foundation is provided for different types of movable translation modes, and the staggered closed design can be adopted for occasions with low space voltage.
Specifically, in order to reduce friction between the linkage pin and the guide groove, the linkage pin is rotatably arranged on the supporting plate or the contact part of the linkage pin and the guide groove is provided with a shaft sleeve which can rotate relative to the contact part, namely, the relative sliding between the guide groove and the linkage pin is converted into rolling, so that the action smoothness is ensured.
The invention adopts the front door plate and the rear door plate which are communicated with movement and are arranged at intervals front and back, adopts the mode of stacking front and back, effectively saves the design space of the valve, realizes miniaturization, has reasonable structure, realizes corresponding overlapping or staggering of the through holes by utilizing the action control of the front door plate and the rear door plate which are in the same direction and are out of synchronization or in the opposite direction and in the opposite direction, and has simple realization and reliable action.
Preferably, in order to improve the mobility of the front door plate and the rear door plate, a movable supporting mechanism is arranged between the front door plate and the rear door plate and between the front door plate and the bracket respectively. As shown in the figure, the movable supporting mechanism includes a slide rail 96 fixedly connected with the front door plate or the rear door plate, and a plurality of guide rollers or guide wheels 98 correspondingly arranged on the vertical beams 11 of the bracket 1 and arranged in two rows, wherein the guide rollers or guide wheels clamp and position the slide rail therein. Taking the horizontal movement of the front door plate and the rear panel as an example, the guide rollers or guide wheels are correspondingly arranged on the upper side and the lower side of the sliding rail, and meanwhile, guide grooves corresponding to the guide rollers or guide wheels 98 are arranged on the upper plane and the lower plane of the sliding rail, the guide rails are clamped and positioned by adopting two groups of freely rotatable guide rollers or guide wheels, and the guide grooves and the embedded guide and positioning of the guide rollers or guide wheels are utilized to realize guiding and constraint for the movement of the guide rollers or guide wheels, so that the support effect is good, the movement is stable, and the normal operation of equipment is effectively satisfied.
Of course, in order to realize the translation of the front door plate and the rear door plate, a guide rail sliding block mechanism can be also utilized, namely, the moving support mechanism comprises a linear guide rail fixedly arranged on the bracket, and a plurality of sliding blocks correspondingly fixedly connected with the front door plate or the rear door plate and matched with the linear guide rail. Meanwhile, a plurality of groups of guide supporting grooves corresponding to the front door plate and the rear door plate are formed on the inner side surface of the side connecting plate 890 for supporting the insulating contact box. The front door plate and the rear door plate are designed to be of structures with supporting and guiding functions on two sides, and mobility and stability of the front door plate and the rear door plate are further improved.
Preferably, for the flexibility that improves preceding valve and back valve, preceding valve as the example, preceding valve include horizontal plate and fall L template, the outside of horizontal plate with side connecting plate top be provided with guide rail slider structure, the upper end and the horizontal plate fixed connection of falling L template, the lower extreme can inlay the guide support inslot with sliding from beginning to end, the inner of horizontal plate regard as the support direction through the guide rail gyro wheel, adopt the organic combination of three kind of direction modes, effectively improved flexibility and the controllability of motion.
The specific use steps are as follows,
1) The support plate is positioned at the lowest position, and the handcart is pushed to move forwards along the support plate until the abutting part is limited by the limiting part and the handcart is locked relative to the support plate; at the moment, the connection of the bottom line is also completed, and meanwhile, the consistency in the up-and-down movement process is ensured by the release of the inclined plane;
2) The supporting plate is driven to lift, the lower end of the supporting arm is synchronously folded along the bottom track, and the teeth of the ratchet sweep the ratchet fingers one by one; in the ascending process, the ratchet finger and the ratchet teeth provide locking support in real time, so as to ensure that falling phenomenon and the like can not occur,
3) The supporting plate is lifted to the highest position, driving is stopped, the ratchet finger is positioned on the outer side of the outermost tooth of the ratchet and is propped up, and the rotating rod is rotated to lock the lower end of the supporting arm by the locking part; the two are locked in double, so that the locking stability is improved,
4) When the ratchet needs to be lowered, the rotating rod is rotated to release the locking part, and meanwhile, the control rod is pushed to enable the ratchet to rotate outwards to release the engagement with the ratchet; at this time the ratchet finger and the ratchet teeth do not come into any contact,
5) The pallet is driven to descend to a low position, the locking of the pallet is released, and the handcart is pulled out for maintenance and other operations.
The dual-power supply device comprises two actuating mechanisms which are arranged at intervals left and right, and two groups of mechanical interlocking mechanisms which are arranged on a vertical beam between the two actuating mechanisms and interact with the two actuating mechanisms, wherein the two groups of mechanical interlocking mechanisms are correspondingly arranged on the side surfaces of the adjacent sides of the two actuating mechanisms. The mechanical interlocking mechanism is used in a medium-high pressure system and comprises a push block 611 which is arranged on one actuating mechanism 61 in a vertical sliding way and is in linkage with a main shaft of the actuating mechanism, a driving rack 62 which is arranged on a vertical beam in a vertical sliding way and is in action with the push block, a linkage rack 64 which is arranged on the vertical beam in a vertical sliding way and is in transmission connection with the driving rack 62 through an intermediate gear 63, a push rod 65 which can interfere with a linkage part and is arranged at the top of the actuating mechanism vertically, a reset spring is arranged between the push rod and the actuating mechanism, and the lower end of the push rod is inserted into the actuating mechanism when the lower end of the push rod is acted by the linkage part and locks the push rod. The mechanical interlocking device can also comprise a reset mechanism, such as a tension spring 66, which is arranged between the top of the linkage rack and the vertical beam 11, and the two groups of mechanical interlocking devices are symmetrically arranged. The actuating mechanism is used for switching on and switching off the main loop, and can be any corresponding component with the function, such as a circuit breaker, and the ejector rod and the actuating mechanism are locked, namely the actuating mechanism is controlled to be incapable of switching on.
The driving racks and the linkage racks of the two groups of mechanical linkage mechanisms are arranged on the inner side and the outer side of the carrier plate 68 fixedly connected with the vertical beam 11 or on two carrier plates fixedly connected with the vertical beam respectively, the two paths of mechanical linkage mechanisms are mutually independent, the installation and maintenance are convenient, the maintenance can be independently detached, the switch electric appliances to be linked can be separated as required, the operation of a main loop is not influenced, and the use safety of equipment is effectively improved.
Specifically, the pushing block is provided with a linkage arm extending to the lower part of the driving gear, the linkage arm can prop the lower end of the driving gear to enable the driving gear to move upwards, the linkage gear drives a push rod arranged on the actuating mechanism vertically through a connecting arm type linkage part, and the push rod can be directly inserted into the actuating mechanism and lock the actuating mechanism, so that the mechanical linkage of the actuating mechanism is realized. In order to realize the action output of the actuating mechanism at the driving side, the push block is linked with the main shaft or the operating mechanism or the main contact, the linkage mode can be realized through a turntable, a connecting rod and the like, and meanwhile, the running track of the push block is guided through mechanisms such as a track and the like, so that the smoothness of the action output is effectively improved, and the execution of subsequent actions is ensured.
The above-mentioned is a concrete implementation mode using gear-rack transmission as a linkage mechanism, in order to implement linkage, as a second implementation mode, the linkage mechanism includes a driving slide block which can slide relatively to a vertical beam or rotate, and a linkage slide block which is connected with the driving slide block through a chain, a driving rope or a push rod transmission, and the push rod is fixedly connected with a fixed connecting arm of the linkage slide block so as to implement vertical or horizontal movement of the push rod.
As another implementation mode, the linkage mechanism is a transmission lever, and the driving part and the linkage part are integrated or separated. The ejector rod is fixedly connected with the driven end side of the transmission lever, namely the linkage part, so as to realize the movement of the ejector rod.
The mechanical interlocking mechanism is independent of the actuating mechanism, has strong adaptability, can be loaded on actuating mechanisms of different types and different forms, adopts a gear rack transmission mechanism and other linkage mechanisms to convert the rotation of a main shaft of one actuating mechanism into the driving of the ejector rod, namely, the closing action of one actuating mechanism enables the ejector rod to retract inwards into the actuating mechanism a and lock the actuating mechanism a, if the actuating mechanism is inserted into the back of a rotating shaft linkage block, the actuating mechanism on the other side cannot complete the closing action, when the actuating mechanism is disconnected, the restraint on the ejector rod is released, the ejector rod is reset upwards, the locking on the actuating mechanism is released, and the self-resetting is realized. The control is simple and the maintenance is convenient.
Specifically, in order to realize the up-down driving of the pushing block by the rotation of the spindle, a turntable 612 in transmission connection with the spindle is arranged on the outer side surface of the first executing mechanism, the pushing block is arranged on the first executing mechanism through a track sliding block mechanism, and the pushing block is in transmission connection with the turntable through a connecting rod 613. The rotary table and the connecting rod type driving are adopted, larger pushing block travel can be obtained, the space architecture is convenient, self-locking can be effectively realized through the arrangement of the hinge points of the rotary table and the connecting rod, and the closing side disconnection caused by the action of the tension spring is avoided.
In order to realize the movement of the driving rack and reduce the resistance of the closing and opening actions, the driving rack and the linkage rack are arranged on the carrier plate 68 through the track sliding block mechanism, the intermediate gear is rotatably arranged on the carrier plate and is meshed with the driving rack and the linkage rack on two sides simultaneously for transmission, and the carrier plate is fixedly connected with the vertical beam. The track slide block mechanism enables the track slide block mechanism to run more stably and reliably, and faults are reduced.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (9)
1. A dual power transfer switch, comprising
The middle part is provided with a bracket of a vertical beam, two L-shaped busbar integrated insulation contact boxes which are respectively and fixedly arranged at two sides of the top of the bracket, a supporting mechanism of each insulation contact box comprises an upright post which is fixedly arranged at the bending part of each insulation contact box, a lifting mechanism which is arranged at two sides of the vertical beam of the bracket, the lifting mechanism comprises a supporting plate which can vertically lift, two support arms which are hinged below the supporting plate and are arranged in a splayed shape, a bottom rail which is matched and connected with the lower end of the supporting arm and is fixedly connected with the bracket, a ball screw type driving unit which directly drives the supporting plate to lift or drive the lower end of the supporting arm to open and close, 3 side outgoing type polar posts, an actuating mechanism corresponding to the supporting plate and a handcart which bears the supporting plate, a translation driving insulation valve protection mechanism are respectively borne on the two supporting plates, the device comprises a linkage pin fixedly arranged on one side of a supporting plate and extending horizontally, a sector gear rotatably fixedly arranged on a bracket and provided with a guide groove matched with the linkage pin, and a rack meshed with the sector gear and fixedly connected with an insulating valve, wherein the insulating valve comprises a front door plate and a rear door plate which are arranged in parallel and driven by the rack fixedly connected with the front door plate in a same direction or in different directions to translate in a different direction, through holes corresponding to a main bus are respectively formed in the front door plate and the rear door plate, when in an open position, the front door plate and the rear door plate are driven to be positioned at positions corresponding to the front side and the rear side of the through holes, when in a closed position, the front door plate and the rear door plate are driven to move in the same direction in an asynchronous manner, and the through holes of the front door plate and the rear door plate are staggered to seal the through holes by using a non-hole position;
The mechanical interlocking mechanism comprises a push block which is slidably or rotatably arranged on one of the actuating mechanisms and is in linkage with a main shaft or an operating mechanism or a main contact of the actuating mechanism; the linkage mechanism is arranged on the vertical beam and comprises a driving part which is movably arranged on the vertical beam and acts with the pushing block, and a linkage part which is in transmission connection with the driving part; the ejector rod can interfere with the linkage part and is vertically arranged at the top of the actuating mechanism, a reset spring is arranged between the ejector rod and the actuating mechanism, and the lower end of the reset spring is inserted into the actuating mechanism and is locked when the lower end of the reset spring is acted by the linkage part;
the supporting mechanism of the insulating contact box further comprises a rear upright post fixedly arranged at the rear end of the insulating contact box, a side baffle plate for connecting the upright post and the rear upright post, a bottom support bar fixedly connected with the side baffle plate and used for supporting the horizontal part of the insulating contact box, and an inclined support fixedly connected with the vertical part of the insulating contact box, wherein the inclined support comprises a side connecting plate fixedly connected with the vertical part of the contact box, and two ends of the inclined support are respectively connected with the side connecting plate and the upright post through inclined connecting rods fixedly connected with bolts.
2. The dual power transfer switch as claimed in claim 1, wherein the locking mechanism for locking the lower ends of the two arms from being separated is provided with a slider matched with the bottom rail to achieve sliding fit of the lower ends of the arms with respect to the bottom rail, the locking mechanism comprises a long ratchet fixedly arranged on the slider and extending along the rail direction, a ratchet finger rotatably fixed with respect to the bracket and corresponding to the ratchet, and a control lever capable of driving the ratchet finger to synchronously turn inwards or outwards to keep or separate from contact with the ratchet.
3. The dual power transfer switch as claimed in claim 2, wherein said locking mechanism comprises a rotary lever extending in a direction of said bottom rail, at least one pair of locking portions provided on said rotary lever, and locking or releasing of the lower end of the arm by the locking portions is achieved by rotating said rotary lever.
4. The dual power transfer switch of claim 1, wherein the sector gear comprises a large pitch circle radius sector gear and a small pitch circle radius sector gear which are coaxially arranged, racks which are respectively meshed with the large pitch circle radius sector gear and the small pitch circle radius sector gear are fixedly connected with the corresponding racks so as to realize homodromous asynchronous driving, the guide groove comprises a front sliding section and a middle linkage section, the action part can drive the sector gear to rotate when the linkage pin is positioned in the middle linkage section, the front sliding end can not drive the sector gear to rotate, the front door plate and the rear door plate are horizontally translated by driving, a movable supporting mechanism is arranged between the inner sides of the front door plate and the rear door plate respectively, and a plurality of groups of guide supporting grooves corresponding to the front door plate and the rear door plate are formed on the inner side surface of the side connecting plate.
5. The dual power transfer switch as claimed in claim 1, wherein the driving mechanism of the front door panel and the rear door panel comprises racks fixedly connected or integrally formed with the front door panel or the rear door panel, respectively, and extending in a moving direction, gears provided corresponding to the racks and having different diameters or simultaneously engaged with the two racks, and a driving part for driving the gears to rotate.
6. The dual power transfer switch of claim 1 wherein said linkage comprises a drive rack slidably disposed on said vertical beam and acting with said push block, a linked rack slidably disposed on said vertical beam and in driving engagement with said drive rack via an intermediate gear, and a reset mechanism disposed between the top of said linked rack and said vertical beam, said push rod being fixedly coupled to said linked rack.
7. The dual power transfer switch of claim 1, wherein said linkage comprises a driving slide block which can slide or rotate relative to the vertical beam and is in driving connection with said driving slide block through a chain, a driving rope or a push rod, and said push rod is fixedly connected with said linkage slide block.
8. The dual power transfer switch of claim 1, wherein a turntable in driving connection with said spindle is disposed on the outer side of said actuator, said push block is disposed on said actuator via a track slider mechanism, said push block is in driving connection with said turntable via a link, and said push block is used to push a linkage of said mechanical linkage to lock the corresponding actuator.
9. The dual power transfer switch as claimed in claim 1, wherein a limit part is provided at a front end or one side of the supporting plate, a rear side surface of the limit part is a slope surface with an upper side edge protruding forward, a butt joint part matched with the limit part is formed on the handcart, a front side surface of the butt joint part is a slope surface corresponding to the slope surface, and the limit part is directly connected with the grounding point through a wire.
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| CN201710184189.8A CN107959343B (en) | 2017-03-24 | 2017-03-24 | Dual-power transfer switch |
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| CN201710184189.8A CN107959343B (en) | 2017-03-24 | 2017-03-24 | Dual-power transfer switch |
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| CN107959343B true CN107959343B (en) | 2024-03-08 |
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