CN113284758A - Three-station isolating switch mechanism - Google Patents
Three-station isolating switch mechanism Download PDFInfo
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- CN113284758A CN113284758A CN202110787376.1A CN202110787376A CN113284758A CN 113284758 A CN113284758 A CN 113284758A CN 202110787376 A CN202110787376 A CN 202110787376A CN 113284758 A CN113284758 A CN 113284758A
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- 238000000926 separation method Methods 0.000 claims abstract description 38
- 230000003068 static effect Effects 0.000 claims description 37
- 238000003825 pressing Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 10
- 238000009499 grossing Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
- H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
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Abstract
本发明公开了一种三工位隔离开关机构，包括固定室以及接触触头，所述固定室内连接有转动接脱机构，所述接触触头固定在转动接脱机构上，所述转动接脱机构能够以自身长度为半径带动接触触头进行旋转动作从而形成所述接触触头的接触扇形区，本发明可通过触片助离机构，实现在脱离时进行夹紧力缩小以及脱离助推动作，其具体实施时，转动接脱机构会带动接触触头在接触扇形区内旋转至与触片助离机构接触后，接触触头对触片助离机构接触施加夹紧力以进行合闸动作；而转动接脱机构带动接触触头在接触扇形区内反方向旋转时，触片助离机构能够减小来自接触触头施加的夹紧力，同时通过触片助离机构沿着转动接脱机构的旋转方向施加推力，以完成分闸动作。
The invention discloses a three-position isolating switch mechanism, comprising a fixed chamber and a contact contact, the fixed chamber is connected with a rotary connection and release mechanism, the contact contact is fixed on the rotation connection and release mechanism, and the rotation connection and release mechanism is The mechanism can drive the contact contact to rotate with its own length as the radius to form the contact sector of the contact contact. The present invention can realize the reduction of the clamping force and the separation assisting action through the contact piece assisting mechanism during disengagement. , when it is specifically implemented, the rotating contact and release mechanism will drive the contact contact to rotate in the contact sector area to contact with the contact piece assisting mechanism, and the contact contact exerts a clamping force on the contact piece assisting mechanism to perform the closing action. When the rotating contact and release mechanism drives the contact contacts to rotate in the opposite direction in the contact sector, the contact piece assisting mechanism can reduce the clamping force exerted by the contact contacts, and at the same time, the contact piece assisting mechanism can rotate along the rotating contact and release mechanism. The rotation direction of the mechanism exerts a thrust to complete the opening action.
Description
Technical Field
The invention relates to the technical field of isolating switches, in particular to a three-station isolating switch mechanism.
Background
The isolating switch is a switch device which is mainly used for isolating a power supply and switching over, communicating and cutting off a small current circuit and has no arc extinguishing function. When the isolating switch is in the separated position, the contacts have insulation distance meeting the specified requirements and obvious disconnection marks; a switching device capable of carrying current in normal loop conditions and current in abnormal conditions (e.g., short circuit) for a specified period of time when in the closed position. The three-position isolating switch comprises a working position, a disconnecting position and a grounding position, a moving contact is generally driven by a linkage mechanism to move among the positions to complete opening, closing and grounding actions, the existing three-position isolating switch often has the condition that the moving contact does not act in place, so that the deviation of the closing position is caused, and the protection of a power supply system is not stable enough.
In the prior art, for example, patent document with patent application number CN201910664862.7, a three-position disconnecting switch is disclosed, in which a stable main body framework is formed by a mounting plate, a base plate and a columnar support, each contact component of a contact system is stably and reasonably distributed between two plates of the main body framework, it is ensured that a moving contact can be fully switched on in place in the action process, a stable protection effect is provided for a power supply system, and meanwhile, when a position indication on an operating mechanism has a deviation from an actual in-place position of the moving contact, that is, when the switching-on is not in place, the angle between a crank arm and a main shaft can be corrected by tightening a U-shaped component and an adjusting bolt, so that the position indication on the operating mechanism and the action of the moving contact are kept without deviation, the switching-on place is ensured, and the situation that the moving contact does not move in place is avoided.
However, the above operation has limitations in the case of over-contact of the contacts, for example, when the contacts are over-contacted, the clamping force between two contacts in mutual contact is large, especially a rusted contact can sufficiently fix the plugged contact, and once the contacts need to be opened by a device, the contact takes a long time to be separated due to the existence of the large clamping force, and even the contact is difficult to be separated.
Therefore, the three-position disconnecting switch mechanism in the prior art is difficult to solve the problem that the contact is excessively contacted, so that the contact is limited to be opened.
Disclosure of Invention
The invention aims to provide a three-station disconnecting switch mechanism to solve the technical problem that in the prior art, contact is excessive, so that the contact is limited in opening.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
a three-station disconnecting switch mechanism comprises a fixed chamber and a contact, wherein a rotary connecting and disconnecting mechanism is connected in the fixed chamber, the contact is fixed on the rotary connecting and disconnecting mechanism, the rotary connecting and disconnecting mechanism can drive the contact to rotate by taking the length of the rotary connecting and disconnecting mechanism as a radius so as to form a contact sector area of the contact, a contact piece separating mechanism is connected in the contact sector area, and the contact piece separating mechanism can be switched on and off with the contact;
the rotary contact-separation mechanism drives the contact to rotate in the contact sector area to be in contact with the contact piece separation assisting mechanism, and the contact applies clamping force to the contact piece separation assisting mechanism for closing;
when the rotating connection and disconnection mechanism drives the contact contacts to rotate in the opposite direction in the contact sector, the contact piece separation mechanism reduces the clamping force applied by the contact contacts, and meanwhile, the contact piece separation mechanism applies thrust along the rotating direction of the rotating connection and disconnection mechanism so as to complete the brake opening action.
As a preferable scheme of the present invention, the contact separation assisting mechanism includes a ground contact connected to one end of the contact sector and a static contact connected to the other end of the contact sector, and the structure of the static contact is the same as that of the ground contact; the clamping force adjusting frame is connected to the static contact piece and can adjust clamping force applied by the contact piece, a boosting seat connected with the static contact piece is arranged on the clamping force adjusting frame and can be limited by the clamping force adjusting frame, and the boosting seat can also apply pushing force to the rotating and disengaging mechanism in the process that the clamping force applied by the contact piece is adjusted by the clamping force adjusting frame;
when the rotating and separating mechanism drives the contact to rotate in the opposite direction in the contact sector, the clamping force adjusting frame adjusts the clamping force applied by the contact, and meanwhile, the boosting seat applies a pushing force to the rotating and separating mechanism, so that the contact is separated from the static contact to complete the opening action.
As a preferable scheme of the present invention, the rotating and detaching mechanism includes a sleeve seat connected to an inner wall of the fixed chamber, the sleeve seat is disposed at a central position of the contact sector, one end of the sleeve seat away from the fixed chamber is connected to a clamping and pushing frame through a driving rotating shaft, the contact is connected to one end of the clamping and pushing frame away from the sleeve seat, a pushing trigger is connected to the clamping and pushing frame, and the pushing trigger can push the clamping force adjusting frame to adjust the clamping force;
in the process that the clamping pushing frame drives the contact terminal to rotate in the contact sector area through the driving rotating shaft and is separated from the static contact piece, the pushing trigger pushes the clamping force adjusting frame to adjust the clamping force; and when the clamping force adjusting frame adjusts the clamping force, the boosting seat gives a pushing force to the clamping pushing frame so as to accelerate the contact to be separated from the static contact, thereby completing the brake opening action.
As a preferable scheme of the invention, the static contact comprises a fixing seat connected with the inner wall of the fixed chamber, a bottom contact is connected to the fixing seat, a storage groove is formed in one end of the bottom contact, which is far away from the sleeve seat, and two side surfaces of the bottom contact are respectively provided with a pressing patch;
the storage groove comprises a vertical groove arranged along one side, close to the fixing seat, of the bottom contact piece to one side, far away from the fixing seat, a return arc groove is arranged at one end, far away from the fixing seat, of the vertical groove, and the return arc groove and the vertical groove are combined to form a p-shaped structure;
and an adjusting cambered surface is arranged on the surface of one side, close to the bottom contact piece, of the pressing contact piece.
As a preferred scheme of the invention, the clamping force adjusting frame comprises an adjusting sheet connected in the vertical groove, a traction member is installed in the return arc groove, one end of the traction member, which is far away from the return arc groove, is connected with the surface of the adjusting sheet, the adjusting sheet can be pushed by the contact to slide along the inner wall of the vertical groove, an adjusting sheet sliding groove is formed in the pressing sheet, and the adjusting sheet sliding groove can limit the adjusting sheet; contact promotes the adjustment sheet along the gliding in-process of vertical inslot wall, the adjustment sheet can also slide and slide along adjusting the cambered surface in the adjustment sheet spout in order to promote press the paster to hug closely contact.
As a preferable scheme of the invention, the side wall of the adjusting sheet is connected with a pushing column penetrating through the bottom contact sheet, the side wall of the pushing column is provided with a protruding column, one side of the bottom contact sheet far away from the fixing seat is provided with a movable caulking groove, the movable caulking groove can accommodate the movement of the pushing column and can limit the protruding column.
As a preferable scheme of the invention, a channel ladder groove is formed on the surface of the fixing seat, the channel ladder groove can guide the adjusting sheet to slide along the inner wall of the channel ladder groove and leave one side of the contact close to the fixing seat, a stud groove is formed on the inner wall of the channel ladder groove, a movable embedded column is connected in the stud groove, and the movable embedded column can be pushed by the adjusting sheet to slide into the stud groove.
As a preferable scheme of the invention, the boosting seat comprises a boosting column with one end hinged with the inner wall of the channel ladder groove, the other end of the boosting column is hinged with a force application pushing frame, one end of the force application pushing frame far away from the boosting column is connected with a smooth strip, the smooth strip can horizontally slide in the channel ladder groove and can be clamped by the movable embedded column, and a pushing spring with an end surface connected with the channel ladder groove is arranged on the side wall of the smooth strip.
As a preferred scheme of the present invention, the clamping and pushing frame includes a rotating column sleeve sleeved on a side wall of the driving rotating shaft, a switching column is installed on a side wall of the rotating column sleeve, one end of the switching column, which is far away from the rotating column sleeve, is connected with the contact terminal, a sliding slot is formed in the switching column, and the pushing trigger is connected in the sliding slot;
the pushing trigger comprises a trigger clamping column which is connected in the sliding clamping groove in a sliding mode, a driving piece of which the end face is connected with the sliding clamping groove is sleeved on the side wall of the trigger clamping column, a trigger fluted disc which is sleeved on the side wall of the driving rotating shaft is arranged at one end, close to the rotating column sleeve, of the trigger clamping column, the trigger fluted disc is arranged in the rotating column sleeve, and the other end of the trigger clamping column is connected with a pushing strip;
when the driving rotating shaft rotates, the triggering fluted disc rotates along with the driving rotating shaft and is meshed with the driving rotating shaft to drive the triggering clamping column and the switching column to rotate, so that the contact is separated from the static contact piece;
and in the rotation process of the trigger fluted disc, the trigger fluted disc pushes the trigger clamping column to slide along the inner wall of the sliding groove, so that the push column is pushed to drive the regulating sheet to horizontally move in the channel ladder groove.
As a preferable scheme of the present invention, the length of the bottom contact piece is not less than the length of the contact, and a guiding inclined plane is arranged on one side of the bottom contact piece away from the fixing seat.
Compared with the prior art, the invention has the following beneficial effects:
the contact piece separation assisting mechanism can reduce the clamping force and realize separation boosting action when the contact piece separation assisting mechanism is separated, and when the contact piece separation assisting mechanism is implemented specifically, the contact piece separation assisting mechanism can drive the contact piece to rotate in the contact sector area to be contacted with the contact piece separation assisting mechanism, and the contact piece exerts the clamping force on the contact of the contact piece separation assisting mechanism to carry out closing action; when the rotating connection and disconnection mechanism drives the contact to rotate in the opposite direction in the contact sector, the contact piece separation mechanism can reduce the clamping force applied by the contact, and meanwhile, thrust is applied by the contact piece separation mechanism along the rotating direction of the rotating connection and disconnection mechanism so as to complete the brake opening action.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a clamping force adjusting bracket according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of the boosting seat according to the embodiment of the present invention when being pressed into the ladder groove of the passageway;
FIG. 4 is a side view of a longitudinal cross-sectional structure of a bottom contact blade according to an embodiment of the present invention;
fig. 5 is a top view of a bottom contact in accordance with an embodiment of the present invention.
The reference numerals in the drawings denote the following, respectively:
1-a stationary chamber; 2-a contact tip; 3-rotating the connecting and disconnecting mechanism; 4-contact separation assisting mechanism;
31-a cannula holder; 32-clamping the pushing frame; 33-push trigger; 34-a drive shaft;
331-rotating the column sleeve; 332-an adapter column; 333-sliding card slot; 334-trigger the catch; 335-a driver; 336-triggering the fluted disc; 337-push strip;
41-ground contact; 42-static contact piece; 43-a clamping force adjusting frame; 44-a boosting seat;
421-a fixing seat; 422-bottom contact piece; 423-storage groove; 424-pressing the patch; 4211-channel ladder grooves; 4212-embedding column groove; 4213-movable embedded column; 4231-vertical groove; 4232-return arc groove; 4241-adjusting arc surface;
431-a regulating sheet; 432-a traction member; 433-tablet adjusting sliding chute;
4311-push post; 4312-raised columns; 4313-movable caulking groove;
441-a lifting column; 442-force applying push frame; 443-a smoothing bar; 444-push spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the invention provides a three-station disconnecting switch mechanism, which comprises a fixed chamber 1 and a contact 2, wherein a rotary connecting and disconnecting mechanism 3 is connected in the fixed chamber 1, the contact 2 is fixed on the rotary connecting and disconnecting mechanism 3, the rotary connecting and disconnecting mechanism 3 can drive the contact 2 to rotate by taking the length of the rotary connecting and disconnecting mechanism as a radius so as to form a contact sector area of the contact 2, a contact isolating mechanism 4 is connected in the contact sector area, and the contact isolating mechanism 4 can perform opening and closing actions with the contact 2;
the contact and release mechanism 3 is rotated to drive the contact 2 to rotate in the contact sector area until the contact is contacted with the contact piece separation assisting mechanism 4, and then the contact 2 applies clamping force to the contact piece separation assisting mechanism 4 for closing;
when the rotary connection and disconnection mechanism 3 drives the contact terminal 2 to rotate in the opposite direction in the contact sector, the contact separation mechanism 4 reduces the clamping force applied from the contact terminal 2, and meanwhile, the contact separation mechanism 4 applies thrust along the rotation direction of the rotary connection and disconnection mechanism 3 so as to complete the brake opening action.
According to the invention, the clamping force is reduced and the separation boosting action is realized during separation through the contact separation mechanism 4, and in the specific implementation, the contact separation mechanism 3 is rotated to drive the contact terminal 2 to rotate in the contact sector area to be contacted with the contact separation mechanism 4, and then the contact terminal 2 is contacted with the contact separation mechanism 4 to apply the clamping force to the contact separation mechanism 4 for closing; and when the rotation connection and disconnection mechanism 3 drives the contact terminal 2 to rotate in the opposite direction in the contact sector, the contact piece separation mechanism 4 can reduce the clamping force applied from the contact terminal 2, and meanwhile, thrust is applied along the rotation direction of the rotation connection and disconnection mechanism 3 through the contact piece separation mechanism 4 so as to complete the brake opening action.
As shown in fig. 1, 2 and 3, the contact separation aid 4 includes a ground contact 41 connected to one end of the contact sector and a static contact 42 connected to the other end of the contact sector, the static contact 42 and the ground contact 41 having the same structure; the static contact 42 is connected with a clamping force adjusting frame 43, the clamping force adjusting frame 43 can adjust the clamping force applied by the contact terminal 2, the clamping force adjusting frame 43 is provided with a boosting seat 44 connected with the static contact 42, the boosting seat 44 can be limited by the clamping force adjusting frame 43, and the boosting seat 44 can also apply a pushing force to the rotary contact mechanism 3 in the process that the clamping force adjusting frame 43 adjusts the clamping force applied by the contact terminal 2;
the contact piece separating mechanism 4 is mainly used for matching with the contact 2 to perform opening and closing operations, when the rotating connection and disconnection mechanism 3 drives the contact 2 to rotate in the opposite direction in a contact sector, the clamping force adjusting frame 43 adjusts the clamping force applied by the contact 2, and meanwhile, the pushing force is applied to the rotating connection and disconnection mechanism 3 through the pushing assisting seat 44, so that the contact 2 is separated from the static contact piece 42 to complete opening.
In this embodiment, the connection mode of the static contact 42 and the ground contact 41 to the external circuit may refer to the prior art patent application No. CN201820949324.3, named as a three-position disconnecting switch, in which the connection mode of the ground contact and the isolation static contact (the isolation static contact is connected with the main bus) is disclosed, and the problem mainly solved by the switch mechanism is the clamping problem between the contact and the contact, which is different from the problem solved by the prior art.
In the specific operation of the disconnecting switch mechanism, once the contact 2 is contacted with the grounding contact piece 41, the switch is grounded, when the contact 2 is positioned between the grounding contact piece 41 and the static contact piece 42, the switch is in an isolating position, and when the contact 2 is connected with the static contact piece 42, the switch is closed.
As shown in fig. 1, the rotary engaging and disengaging mechanism 3 includes a sleeve seat 31 connected to the inner wall of the fixed chamber 1, the sleeve seat 31 is disposed at the center of the contact sector, one end of the sleeve seat 31 far from the fixed chamber 1 is connected to a clamping pushing frame 32 through a driving rotating shaft 34, the contact terminal 2 is connected to one end of the clamping pushing frame 32 far from the sleeve seat 31, a pushing trigger 33 is connected to the clamping pushing frame 32, and the pushing trigger 33 can push the clamping force adjusting frame 43 to adjust the clamping force;
the rotary contact-separation mechanism 3 is mainly used for driving the contact 2 to move among various stations, and meanwhile, when the rotary contact-separation mechanism 3 moves, once the contact 2 cannot be quickly separated from the contact plate separation-aiding mechanism 4, the rotary contact-separation mechanism 3 can also play a role of triggering, so that the boosting seat 44 pushes the rotary contact-separation mechanism 3 to separate from a contact plate, and when the rotary contact-separation mechanism 3 works specifically, the clamping pushing frame 32 can drive the contact 2 to rotate in a contact sector area through the driving rotating shaft 34 and separate from the static contact plate 42, the trigger 33 is pushed to push the clamping force adjusting frame 43 to adjust the clamping force; while the clamping force adjusting frame 43 adjusts the clamping force, the boosting seat 44 gives a pushing force to the clamping pushing frame 32, so that the contact 2 is accelerated to be separated from the static contact 42, and the opening action is completed.
In this embodiment, the driving manner of the driving shaft 34 is not exclusive, and may be manual or electric, and meanwhile, the driving shaft 34 is more convenient to operate when driving because the contact 2 is separated more conveniently and quickly and the resistance is smaller.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the static contact 42 includes a fixing seat 421 connected to the inner wall of the fixing chamber 1, a bottom contact 422 is connected to the fixing seat 421, a storage groove 423 is opened at one end of the bottom contact 422 away from the cannula seat 31, and two side surfaces of the bottom contact 422 are respectively provided with a pressing piece 424;
the storage groove 423 comprises a vertical groove 4231 which is arranged along one side of the bottom contact piece 422 close to the fixing seat 421 to one side far away from the fixing seat 421, one end of the vertical groove 4231 far away from the fixing seat 421 is provided with a return arc groove 4232, and the return arc groove 4232 and the vertical groove 4231 are combined to form a p-shaped structure;
the surface of one side of the pressing piece 424 close to the bottom contact piece 422 is provided with an adjusting arc 4241.
The static contact 42 (or the ground contact 41, because the structure of the ground contact 41 is the same as that of the static contact 42, the working state between the contact 2 and the static contact 42 or the ground contact 41 is the same) can fix the clamping force adjusting frame 43 and the boosting seat 44, and meanwhile, the contact 2 can be guided and clamped through the pressure patch 424, so that the situation of plugging offset or shaking between the contact 2 and the static contact 42 is prevented.
The length of the bottom contact piece 422 is not less than the length of the contact 2, the longitudinal section of the contact 2 is U-shaped, and a guiding inclined plane is arranged on the side of the bottom contact piece 422 far away from the fixing seat 421.
So set up bottom contact piece 422 and can make contact 2 joint when bottom contact piece 422, can not appear pushing the condition that strip 337 directly was taken on promoting post 4311, the inclined plane of guide can also guide contact 2 activity simultaneously, the prevention appears the condition that contact 2 is blocked by bottom contact piece 422, and contact 2 so sets up the mesh that can play assurance clamping-force.
As shown in fig. 2, the clamping force adjusting bracket 43 includes an adjusting sheet 431 connected in the vertical groove 4231, a traction member 432 (the traction member 432 can select a spring) is installed in the return arc groove 4232, one end of the traction member 432 far away from the return arc groove 4232 is connected with the surface of the adjusting sheet 431, the adjusting sheet 431 can be pushed by the contact 2 to slide along the inner wall of the vertical groove 4231, an adjusting sheet sliding groove 433 is formed in the pressing sheet 424, and the adjusting sheet sliding groove 433 can limit the adjusting sheet 431; during the process that the contact terminal 2 pushes the adjusting sheet 431 to slide along the inner wall of the vertical slot 4231, the adjusting sheet 431 can also slide in the adjusting sheet sliding slot 433 and slide along the surface of the adjusting cambered surface 4241 to push the pressing sheet 424 to cling to the contact terminal 2.
In this embodiment, the specific structure of the adjusting sheet 431 may be composed of two T heads and a connecting block installed between the two T heads, as shown in fig. 4, so that not only the operation pushed by the contact 2 can be implemented, but also the purpose of pushing the pressure sheet 424 to cling to the contact 2 can be achieved
The clamping force adjusting frame 43 can specifically achieve the purpose of adjusting the clamping force between the contact 2 and the bottom contact piece 422, and the implementation needs to be completed from two aspects:
the first stage contact 2 is connected with the bottom contact piece 422: at this moment, the contact head 2 is driven to deflect towards the direction of the static contact piece 42 through the clamping pushing frame 32 and gradually contacts the bottom contact piece 422, at this moment, the contact head 2 can push the adjusting piece 431 to slide along the vertical groove 4231, then the sliding adjusting piece 431 can drive the pulling piece 432, so that the pulling piece 432 is stretched, the subsequent adjusting piece 431 can be conveniently reset quickly, the work of the boosting seat 44 cannot be influenced, the adjusting piece 431 can also drive the pushing column 4311 to move along the movable embedded groove 4313 when moving, and the adjusting piece 431 can be driven to indirectly push the trigger 33 no matter which position the adjusting piece 431 is located through the operation.
When the adjusting sheet 431 slides along the vertical slot 4231, the adjusting sheet 431 mainly means that the T head can slide along the pressing sheet 424, and when the contact 2 pushes the T head to slide along the adjusting sheet sliding slot 433, the T head can also slide along the surface of the adjusting arc 4241 to push the pressing sheet 424 to cling to the contact 2, so that the clamping force between the contact 2 and the bottom contact piece 422 can be fully ensured.
When the contact 2 pushes the T head, the T head is directly pushed into the channel ladder groove 4211, and the channel ladder groove 4211 in this embodiment is composed of a straight groove and vertical grooves disposed at both sides of the bottom contact piece 422.
At the second stage, the action of reducing the clamping force between the contact 2 and the bottom contact piece 422 is required, at this time, the force of the clamping pushing frame 32 driving the contact 2 to disengage from the bottom contact piece 422 is smaller than the clamping force between the contact 2 and the bottom contact piece 422, so the pushing trigger 33 is triggered by the driving rotating shaft 34 to push the adjusting piece 431 to slide, so that the adjusting piece 431 slides along the straight groove and disengages from the pressing of the contact 2, then the adjusting piece 431 cannot be pushed, and the adjusting piece 431 can push the movable clamping column 4213 during the sliding process along the straight groove, so that the booster seat 44 can be triggered, that is, the adjusting piece 431 can reduce the clamping force between the pressing piece 424 and the contact 2 immediately after being pushed by the pushing trigger 33, and can trigger the booster seat 44 at the same time.
As shown in fig. 2, the side wall of the adjusting tab 431 is connected with a pushing column 4311 penetrating through the bottom contact piece 422, a protruding column 4312 is installed on the side wall of the pushing column 4311, a movable caulking groove 4313 is formed in one side of the bottom contact piece 422, which is far away from the fixing seat 421, the movable caulking groove 4313 can accommodate the pushing column 4311 to move, and can limit the protruding column 4312.
Under the daily condition, the adjusting sheet 431 cannot drive the pushing column 4311 and the protruding column 4312 to move (the protruding column 4312 can limit the position of the pushing column 4311, so that the adjusting sheet 431 cannot be indirectly driven by the traction piece 432 to move freely in the movable caulking groove 4313), and then when the contact 2 deflects and is clamped towards the bottom contact piece 422, the adjusting sheet 431 (mainly referring to the T head) is positioned below the surface of one side of the contact 2 close to the bottom contact piece 422, namely, the side of the contact 2 can sufficiently play a role in pushing the adjusting sheet 431 (mainly referring to the T head).
The movable caulking groove 4313 may make the operation of the push column 4311 not affected.
As shown in fig. 2, 3 and 5, a channel ladder groove 4211 is formed in the surface of the fixing seat 421, the channel ladder groove 4211 can guide the adjusting piece 431 to slide along the inner wall of the channel ladder groove 4211 and leave one side of the contact 2 close to the fixing seat 421, a stud groove 4212 is formed in the inner wall of the channel ladder groove 4211, a movable clamping stud 4213 is connected in the stud groove 4212, and the movable clamping stud 4213 can be pushed by the adjusting piece 431 to slide into the stud groove 4212.
The passage ladder slot 4211 is mainly used for fixing the components of the boosting seat 44 and providing space for the movement of the adjusting sheet 431, and a spring can be arranged in the embedded column slot 4212 to enable the movable embedded column 4213 to reciprocate along the embedded column slot 4212, and the length of the movable embedded column 4213 is required to meet the requirement of clamping the component smooth strip 443 in the boosting seat 44 and can be pushed by the adjusting sheet 431.
As shown in fig. 2, 3, 4 and 5, the boosting seat 44 includes a pushing column 441 having one end hinged to an inner wall of the access ladder groove 4211, a force applying pushing frame 442 hinged to a side wall of the other end of the pushing column 441, a smooth bar 443 connected to one end of the force applying pushing frame 442 away from the pushing column 441, the smooth bar 443 being capable of horizontally sliding in the access ladder groove 4211, the smooth bar 443 being capable of being clamped by the movable clamping column 4213, and a pushing spring 444 having an end surface connected to the access ladder groove 4211 being mounted on a side wall of the smooth bar 443.
In this embodiment, the component sliding strip 443 in the boosting seat 44 is located below the adjusting tab 431 in the channel ladder groove 4211, taking fig. 4 and fig. 3 as an example, when the adjusting tab 431 is pressed into the channel ladder groove 4211 by the contact 2, the adjusting tab 431 is located at the surface position of the channel ladder groove 4211, that is, the adjusting tab 431 is always located above the sliding strip 443, even if the adjusting tab 431 is pushed to trigger by the push trigger 33, the adjusting tab 431 only slides in one plane until the adjusting tab is out of the limit of the contact 2, and the specific length of the contact 2 is sufficient to enable the adjusting tab 431 to move, and enable the adjusting tab 431 to slide out of the limit of the contact 2.
When the boosting seat 44 works, once the contact 2 presses the adjusting sheet 431 into the channel ladder groove 4211, taking fig. 3 as an example, the adjusting sheet 431 is located at the right side of the movable embedded column 4213, once the adjusting sheet 431 is pushed by the pushing trigger 33, the adjusting sheet 431 slides towards the movable embedded column 4213 and pushes the movable embedded column 4213 into the embedded column groove 4212, then the smooth strip 443 is not stressed, the pushing spring 444 pushes the smooth strip 443 to slide along the channel ladder groove 4211, so that the smooth strip 443 gives a pushing force to the force applying pushing frame 442, and then the force applying pushing frame 442 pushes the pushing column 441 to lift, and the specific movement condition is shown in fig. 2 and fig. 3.
In this embodiment, the width of the push-up post 441 should be larger than the contact clip width of the contact 2 (the contact 2 may be composed of a U-shaped contact clip).
As shown in fig. 1, the clamping pushing frame 32 includes a rotating column sleeve 331 sleeved on a side wall of the driving rotating shaft 34, an adapter column 332 is installed on the side wall of the rotating column sleeve 331, one end of the adapter column 332, which is far away from the rotating column sleeve 331, is connected with the contact 2, a slide groove 333 is formed in the adapter column 332, and the pushing trigger 33 is connected in the slide groove 333;
the pushing trigger 33 comprises a triggering clamp column 334 slidably connected in the slide clamp slot 333, a driving piece 335 (the driving piece 335 can select a spring) with an end surface connected with the slide clamp slot 333 is sleeved on a side wall of the triggering clamp column 334, a triggering fluted disc 336 sleeved on a side wall of the driving rotating shaft 34 is arranged at one end of the triggering clamp column 334 close to the rotating column sleeve 331, the triggering fluted disc 336 is arranged in the rotating column sleeve 331, and a pushing strip 337 is connected to the other end of the triggering clamp column 334.
When the driving shaft 34 rotates, the triggering fluted disc 336 rotates along with the driving shaft 34 and is engaged with the triggering clamping column 334 and the adapting column 332 to rotate, so that the contact 2 is separated from the static contact 42.
During the rotation of the trigger gear 336, the trigger gear 336 pushes the trigger latch 334 to slide along the inner wall of the slide slot 333, so that the push column 4311 is pushed to drive the adjusting piece 431 to move horizontally in the channel ladder slot 4211.
When the push trigger 33 works specifically, the driving shaft 34 rotates to drive the trigger fluted disc 336 to move, and the movable trigger fluted disc 336 applies a rotating force to the trigger clamp posts 334 and the adapting posts 332, so that once the rotating force is smaller than the clamping force of the contact 2, the trigger fluted disc 336 pushes the trigger clamp posts 334 to slide along the inner walls of the slide slots 333 through the tooth posts (a plurality of the tooth posts are arranged, and the longitudinal sections of the tooth posts are isosceles trapezoids), then the sliding trigger clamp posts 334 compress the driving piece 335 and push the pushing strip 337, and the pushing strip 337 pushes the pushing post 4311 to drive the adjusting piece 431 to move in the channel ladder groove 4211 until the adjusting piece is separated from the limit of the contact 2, and then the pulling piece 432 drives the adjusting piece 431 to rise and the contact 2 is pushed by the push assisting seat 44.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (10)
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| CN202110787376.1A CN113284758B (en) | 2021-07-13 | 2021-07-13 | A three-position isolating switch mechanism |
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| CN202110787376.1A CN113284758B (en) | 2021-07-13 | 2021-07-13 | A three-position isolating switch mechanism |
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| CN113284758A true CN113284758A (en) | 2021-08-20 |
| CN113284758B CN113284758B (en) | 2021-10-12 |
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| CN202110787376.1A Active CN113284758B (en) | 2021-07-13 | 2021-07-13 | A three-position isolating switch mechanism |
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| US20140054148A1 (en) * | 2011-08-09 | 2014-02-27 | Kabushiki Kaisha Toshiba | Switchgear and operation mechanism for the same |
| WO2013087661A1 (en) * | 2011-12-14 | 2013-06-20 | Alstom Technology Ltd | Device for driving a conductive unit of a circuit breaker so as to move the unit at a variable speed |
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|---|---|
| CN113284758B (en) | 2021-10-12 |
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