CN108933057B - Three-station isolating switch and travel switch thereof - Google Patents
Three-station isolating switch and travel switch thereof Download PDFInfo
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- CN108933057B CN108933057B CN201710391230.9A CN201710391230A CN108933057B CN 108933057 B CN108933057 B CN 108933057B CN 201710391230 A CN201710391230 A CN 201710391230A CN 108933057 B CN108933057 B CN 108933057B
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- 238000002955 isolation Methods 0.000 claims abstract description 22
- 238000007664 blowing Methods 0.000 claims abstract description 16
- 230000001960 triggered effect Effects 0.000 claims abstract description 11
- 230000002457 bidirectional effect Effects 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 abstract description 6
- 230000000903 blocking effect Effects 0.000 description 14
- 238000005452 bending Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
Classifications
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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
- H01H31/04—Interlocking mechanisms
- H01H31/10—Interlocking mechanisms for interlocking two or more switches
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to the field of switch equipment, in particular to a three-station isolating switch and a travel switch thereof. The travel switch of the three-station isolating switch comprises a switch body and a signal rod, wherein a first self-resetting swinging piece and a second self-resetting swinging piece are hinged to the signal rod, the first self-resetting swinging piece is provided with a first swinging piece stop position, and the second self-resetting swinging piece is provided with a second swinging piece stop position; when the main shaft linkage piece is used, the first self-resetting swinging piece positioned at the stop position of the first swinging piece presses the signal rod to trigger the travel switch when the main shaft linkage piece is isolated and separated, and the second self-resetting swinging piece positioned at the stop position of the second swinging piece presses the signal rod to trigger the travel switch when the main shaft linkage piece is grounded and separated; the main shaft linkage piece is in the isolation brake separating position or the grounding brake separating position, the same travel switch can be triggered to send brake separating signals, the number of magnetic blowing switches is reduced, the logic relation of a circuit is simplified, and the problems that the installation and debugging of the existing three-station isolating switch are complex and the assembly efficiency is low are solved.
Description
Technical Field
The invention relates to the field of switch equipment, in particular to a three-station isolating switch and a travel switch thereof.
Background
With the development of the power industry, three-position disconnectors are increasingly applied. The three-station isolating switch is usually operated by adopting electric control, and comprises an isolating knife and an operating mechanism for driving the isolating knife to act, wherein the operating mechanism comprises a cam for driving the main shaft to be connected and a travel switch for controlling the operating mechanism according to the opening and closing position of the isolating knife, and the cam forms a main shaft linkage piece of the three-station isolating switch. The travel switch generally selects a magnetic blowing switch, the magnetic blowing switch comprises a switch body and a movable rod hinged on the switch body, a pulley block is arranged on the movable rod, the movable rod is pressed by the cam in cooperation with the pulley block after reaching a corresponding position, a switch button on the switch body is pressed by the movable rod to trigger the magnetic blowing switch, and a corresponding instruction is sent out to control an operating mechanism after the magnetic blowing switch is triggered.
Normally, the three-station isolating switch is provided with three stations of switching on, switching off and grounding, the corresponding cams are provided with corresponding positions, but due to the shape of the cams and the requirement of switching off stroke, the switching off position of the three-station isolating switch is divided into two isolation switching off positions and two grounding switching off positions, and the cams are provided with four corresponding positions in the switching off and switching on process of the three-station isolating switch: the device comprises an isolation switch-on position, a grounding switch-on position, an isolation switch-off position and a grounding switch-off position. The switching-on travel switch and the grounding travel switch are arranged around the cam, the magnetic blowing switch is arranged on the isolating switching-off position and the grounding switching-off position, the same switching-off signals are output at different positions by the two magnetic blowing switches on the isolating switching-off position and the grounding switching-off position through complex circuit logic operation, the driving motor is controlled to be powered off, and the switching-off positions of the three-station isolating switch are required to be assembled with the two magnetic blowing switches, so that the problems of complex installation and debugging and low assembly efficiency are caused.
Disclosure of Invention
The invention aims to provide a three-station isolating switch so as to solve the problems of complex installation and debugging and low assembly efficiency of the existing three-station isolating switch; in addition, the invention also aims to provide a travel switch used for the three-station isolating switch.
In order to achieve the above purpose, the technical scheme of the three-station isolating switch provided by the invention is as follows: the three-station isolating switch comprises a main shaft linkage part, wherein an isolating switch-on position, a grounding switch-on position, an isolating switch-off position and a grounding switch-off position are arranged on the rotating stroke of the main shaft linkage part, and the three-station isolating switch also comprises a switch-off stroke switch corresponding to the main shaft linkage part positioned at the isolating switch-off position and the grounding switch-off position, wherein the switch-off stroke switch comprises a switch body and a signal rod hinged on the switch body and used for triggering the switch-off stroke switch after being pressed; the signal rod is hinged with a first self-resetting swinging piece and a second self-resetting swinging piece, the first self-resetting swinging piece is provided with a first swinging piece anti-swinging position on a swinging stroke swinging far away from an isolation closing position, and the second self-resetting swinging piece is provided with a second swinging piece anti-swinging position on a swinging stroke swinging far away from a grounding closing position; when the main shaft linkage piece is in an isolated opening position, the opening travel switch is triggered by a first self-resetting swinging piece pressing signal rod positioned at the first swinging piece stopping position, and when the main shaft linkage piece is in a grounded opening position, the opening travel switch is triggered by a second self-resetting swinging piece pressing signal rod positioned at the second swinging piece stopping position, and the rotation axes of the first self-resetting swinging piece and the second self-resetting swinging piece are parallel; or the signal piece is provided with a bidirectional anti-swing piece, and the swing stroke of the bidirectional anti-swing piece is provided with a first anti-swing position and a second anti-swing position; the main shaft linkage piece is triggered to be separated from the brake stroke switch through a bidirectional swing stopping piece pressing signal rod at a first swing stopping position when the isolation brake closing position moves to the isolation brake separating position, and is triggered to be separated from the brake stroke switch through a bidirectional swing stopping piece pressing signal rod at the first swing stopping position when the grounding brake closing position moves to the grounding brake separating position, and the swing axis of the bidirectional swing stopping piece is parallel to the rotation axis of the main shaft linkage piece.
The hinge positions of the first self-resetting swinging piece and the second self-resetting swinging piece on the signal rod are arranged at intervals in the extending direction of the signal rod and have a set interval, so that the first self-resetting swinging piece and the second self-resetting swinging piece are mutually independent in the swinging process.
The first self-resetting swinging piece is provided with a first torsion spring, two torsion arms of the first torsion spring are respectively fixed on the signal rod and the first self-resetting swinging piece, the first self-resetting swinging piece realizes self-resetting through the first torsion spring, and/or the second self-resetting swinging piece is provided with a second torsion spring, two torsion arms of the second torsion spring are respectively fixed on the signal rod and the second self-resetting swinging piece, and the second self-resetting swinging piece realizes resetting through the second torsion spring.
The first self-resetting swinging piece and/or the second self-resetting swinging piece are/is clamping plate type swinging pieces, each clamping plate type swinging piece comprises two clamping plates which are respectively positioned at two sides of the signal rod and a hinge shaft which is relatively fixed with the two clamping plates and penetrates through the signal rod, each clamping plate type swinging piece is hinged on the signal rod through the hinge shaft, each clamping plate type swinging piece comprises a cross rod which is connected with the two clamping plates, and the first self-resetting swinging piece is limited to continuously swing in a direction far away from the isolating closing position when the first swinging piece is in a swinging stop position through the cross rod and the signal rod stop fit; the second self-resetting swinging piece is limited to swing continuously in a direction far away from the grounding closing position by the stop fit of the cross rod and the signal rod of the second swinging piece when the second swinging piece stops swinging.
The switching-off travel switch is a magnetic blowing switch, and the signal rod is composed of a movable rod on the magnetic blowing switch.
The technical scheme of the travel switch is as follows: the travel switch comprises a switch body and a signal rod which is hinged on the switch body and triggers the travel switch after being pressed, a first self-resetting swinging piece and a second self-resetting swinging piece are hinged on the signal rod, the swinging travel of the first self-resetting swinging piece is provided with a first swinging piece stop position, and the swinging travel of the second self-resetting swinging piece is provided with a second swinging piece stop position; the first swinging piece and the second swinging piece are arranged far away from each other, the first self-resetting swinging piece is positioned at the first swinging piece and is pressed by the signal rod after being pressed to trigger the travel switch, the second self-resetting swinging piece is positioned at the second swinging piece and is pressed by the signal rod after being pressed to trigger the travel switch, and the rotating axes of the first self-resetting swinging piece and the second self-resetting swinging piece are parallel;
or the signal piece is provided with a bidirectional anti-swing piece, and the swing stroke of the bidirectional anti-swing piece is provided with a first anti-swing position and a second anti-swing position which are far away from each other; the bidirectional swing stopping piece is arranged at the first swing stopping position or is arranged at the first swing stopping position, the signal rod is pressed to trigger the travel switch after the pressure of the main shaft linkage piece is applied, and the end part of the bidirectional swing stopping piece, which is far away from the signal piece, is provided with a roller.
The hinge positions of the first self-resetting swinging piece and the second self-resetting swinging piece on the signal rod are arranged at intervals in the extending direction of the signal rod and have a set interval, so that the first self-resetting swinging piece and the second self-resetting swinging piece are mutually independent in the swinging process.
The first self-resetting swinging piece is provided with a first torsion spring, two torsion arms of the first torsion spring are respectively fixed on the signal rod and the first self-resetting swinging piece, the first self-resetting swinging piece realizes self-resetting through the first torsion spring, and/or the second self-resetting swinging piece is provided with a second torsion spring, two torsion arms of the second torsion spring are respectively fixed on the signal rod and the second self-resetting swinging piece, and the second self-resetting swinging piece realizes resetting through the second torsion spring.
The first self-resetting swinging piece and/or the second self-resetting swinging piece are/is clamping plate type swinging pieces, each clamping plate type swinging piece comprises two clamping plates which are respectively positioned at two sides of the signal rod and a hinge shaft which is relatively fixed with the two clamping plates and penetrates through the signal rod, each clamping plate type swinging piece is hinged on the signal rod through the corresponding hinge shaft, each clamping plate type swinging piece comprises a cross rod which is connected with the corresponding two clamping plates, and the first self-resetting swinging piece is limited to continuously swing in a direction far away from the stop position of the corresponding second swinging piece when the first swinging piece stops swinging through the stop fit of the cross rod and the signal rod; the second self-resetting swinging piece is limited to swing continuously in a direction far away from the first swinging piece by the stop fit of the cross rod and the signal rod of the second self-resetting swinging piece when the second swinging piece stops swinging.
The travel switch is a magnetic blow switch, and the signal rod is composed of a movable rod on the magnetic blow switch.
The beneficial effects of the invention are as follows: compared with the existing three-station isolating switch, the travel switch of the three-station isolating switch comprises a switch body and a signal rod hinged on the switch body, wherein a first self-resetting swinging piece and a second self-resetting swinging piece are hinged on the signal rod, the first self-resetting swinging piece is provided with a first swinging piece stop position on a swinging travel far away from an isolating closing position, and the second self-resetting swinging piece is provided with a second swinging piece stop position on a swinging travel far away from a grounding closing position; when the three-station isolating switch is used, the main shaft linkage part presses the signal rod to trigger the travel switch through the first self-resetting swinging part positioned at the anti-swinging position of the first swinging part when isolating and opening, and presses the signal rod to trigger the travel switch through the second self-resetting swinging part positioned at the anti-swinging position of the second swinging part when grounding and opening; the main shaft linkage piece is in the isolation brake separating position or the grounding brake separating position, the same travel switch can be triggered to send brake separating signals, the number of magnetic blowing switches is reduced, meanwhile, the logic relation of a circuit is simplified, and the problems that the installation and debugging of the existing three-station isolating switch are complex and the assembly efficiency is low are solved. Similarly, for the three-station isolating switch provided with the bidirectional anti-swing piece, the problems can be solved, and the description is omitted.
Further, the hinge positions of the first self-resetting swinging piece and the second self-resetting swinging piece on the signal rod are arranged at intervals in the extending direction of the signal rod and have set intervals so that the first self-resetting swinging piece and the second self-resetting swinging piece are mutually independent in the swinging process, and the stability of the first self-resetting swinging piece and the second self-resetting swinging piece in the swinging process is ensured.
Further, the first self-resetting swinging piece and/or the second self-resetting swinging piece are/is clamping plate type swinging pieces, each clamping plate type swinging piece comprises two clamping plates which are respectively positioned at two sides of the signal rod and a hinge shaft which is relatively fixed with the two clamping plates and penetrates through the signal rod, each clamping plate type swinging piece is hinged on the signal rod through the hinge shaft, a cross rod which is connected with the two clamping plates is arranged on each clamping plate type swinging piece, and the first self-resetting swinging piece is limited to continuously swing in a direction far away from the isolation closing position when the first swinging piece stops swinging through the cross rod and the signal rod stops matching; the second self-resetting swinging piece is stopped at the second swinging piece and is stopped and matched with the signal rod through the cross rod of the second swinging piece, the second self-resetting swinging piece is limited to continuously swing in the direction far away from the grounding closing position, the first self-resetting swinging piece and the second self-resetting swinging piece are stopped and matched with the signal rod through the cross rods of the first self-resetting swinging piece and the second self-resetting swinging piece, the swinging is stopped, the structure is simple, and stable matching of the first self-resetting swinging piece and the second self-resetting swinging piece with the signal rod can be realized.
Further, the travel switch is a magnetic blowing switch, the signal rod is composed of a movable rod on the magnetic blowing switch, the travel switch can be manufactured through partial structural change of the existing magnetic blowing switch, the travel switch can be suitable for the structure of the existing three-station isolating switch, the structure of the existing three-station isolating switch does not need to be redesigned, and meanwhile the processing efficiency of the travel switch is improved.
Drawings
FIG. 1 is a schematic diagram of a three-position disconnector embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of the trip position travel switch of FIG. 1;
FIG. 3 is a schematic view of the assembly of the first self-resetting wobble member and signal lever of FIG. 2;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is a schematic view of the signal rod of FIG. 2;
FIG. 6 is a schematic view of the clamp plate and cross bar of the first self-resetting swing member of FIG. 2;
FIG. 7 is a left side view of FIG. 5;
FIG. 8 is a schematic view of a cam of embodiment 1 of a three-position disconnecting switch of the invention prior to entering a disconnecting switch position;
FIG. 9 is a schematic view of a cam of embodiment 1 of a three-position disconnecting switch of the invention in a disconnected position;
FIG. 10 is a schematic view of a three-position disconnector according to embodiment 1 of the present invention, prior to a cam entering a ground opening position;
FIG. 11 is a schematic view of a cam in a grounded open position according to embodiment 1 of the three-position disconnector of the present invention;
FIG. 12 is a schematic view of a three-position disconnector embodiment 2 of the present invention;
fig. 13 is an enlarged view of a portion a in fig. 12.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
In the specific embodiment 1 of the three-station isolating switch, as shown in fig. 1, the three-station isolating switch comprises an operating mechanism and an operating mechanism front clamping plate 1, the operating mechanism comprises a cam 2 rotationally assembled on the operating mechanism front clamping plate 1 and connected with a main shaft of the three-station isolating switch, the three-station isolating switch has three states of closing, opening and grounding, and due to the limitation of the shape of the cam 2 and the requirement of opening stroke, the rotating stroke of the cam 2 is provided with an isolating closing position, a grounding closing position, an isolating opening position and a grounding opening position corresponding to the state of the three-station isolating switch, wherein when the cam 2 is in the isolating closing position, the three-station isolating switch is in the closing state; when the cam 2 is positioned at the isolation brake-separating position and the grounding brake-separating position, the three-station isolating switch is in a brake-separating state; when the cam 2 is in the grounding closing position, the three-station isolating switch is in the grounding state. The cam in this embodiment forms the spindle linkage of the three-position disconnecting switch, and in other embodiments the spindle linkage may be formed by a cam linkage mechanism or a link.
The front clamping plate 1 is also provided with an isolation closing travel switch 3 corresponding to the cam 2 at the isolation closing position, a grounding closing travel switch 4 corresponding to the cam 2 at the grounding closing position and a separating travel switch 5 corresponding to the isolation separating position and the isolation separating position. In this embodiment, the isolation switch-on travel switch 3, the ground switch-on travel switch 4, and the switch-off travel switch 5 are magnetic blow switches.
As shown in fig. 2, the opening travel switch 5 includes a switch body 51 and a signal lever 52 hinged to the switch body 51, the signal lever 52 in this embodiment being constituted by a movable lever on the magnetic blow switch. The signal rod 52 is used for triggering the opening travel switch to send an opening signal after being pressed.
As shown in fig. 2, the signal rod 52 is hinged with a first self-resetting swinging member 53 and a second self-resetting swinging member 54, wherein the first self-resetting swinging member 53 has a first swinging member stop position, the second self-resetting swinging member 54 has a second swinging member stop position, the first self-resetting swinging member stop position and the second swinging member stop position are arranged far away from each other, the first self-resetting swinging member 53 in fig. 2 is in the first self-swinging member stop position, and the second self-resetting swinging member 54 in the second swinging member stop position. The hinge positions of the first and second self-resetting swinging members 53 and 54 in the present embodiment are spaced apart in the extending direction of the signal lever 52, and the hinge positions of the first and second self-resetting swinging members 53 and 54 have a set pitch so that the first and second self-resetting swinging members 53 and 54 are independent of each other and do not interfere with each other during swinging. The swing axis of the first self-resetting swinging member 53, the swing axis of the second self-resetting swinging member 54, and the rotation axis of the cam 2 are parallel to each other. The first swing stopping position is on the swing stroke of the first self-resetting swing piece 53 swinging away from the isolation closing position, and the second swing stopping position is on the swing stroke of the second self-resetting swing piece 54 swinging away from the ground closing position.
The cam 2 triggers the opening travel switch to send out a signal by pressing the signal rod 52 through the first self-resetting swinging piece 53 positioned at the first swinging piece stop position when isolating the opening position, and triggers the opening travel switch to send out a signal by pressing the signal rod 52 through the second self-resetting swinging piece 54 positioned at the second swinging piece stop position when grounding the opening position.
In this embodiment, the first self-resetting swinging member 53 and the second self-resetting swinging member 54 are both clamping plate type swinging members, as shown in fig. 3 to 7, the clamping plate type swinging members include two clamping plates 61 respectively located at two sides of the signal rod 52 and a hinge shaft 62 relatively fixed to the two clamping plates 61, in this embodiment, the signal rod 52 is formed by bending a plate, a bending groove 521 is formed in the signal rod 52, and the two clamping plates 61 are located at two sides of the bending groove 521. The hinge shaft 62 penetrates the groove wall of the bending groove 521, and the clamping plate type swinging member is hinged to the signal lever 52 through the hinge shaft 62. The hinge shaft 62 is provided at one end of the clamping plate type swinging member near the signal rod 52, and one end of the clamping plate type swinging member far away from the signal rod 52 is rotatably provided with a roller 65, and the roller 65 is positioned between the two clamping plates 61. In fig. 3 to fig. 7, the structure of the clamping plate type swinging member is illustrated by taking the first self-resetting swinging member as an example, and the second self-resetting swinging member is different from the first self-resetting swinging member only in the position of the cross bar, and will not be described again.
In this embodiment, the clamping plate type swinging member includes a cross bar 63 fixedly connected to the two clamping plates 61, and after the clamping plate type swinging member swings to a set angle, the cross bar 63 is in stop fit with the signal rod 52. The hinge shaft 62 is provided with a torsion spring 64, the torsion spring 64 is sleeved on the part of the hinge shaft 62 in the bending groove, and two torsion arms of the torsion spring are respectively fixed on the cross rod and in the bending groove of the signal rod 52.
In this embodiment, the first self-resetting swinging member 53 is always in the first swinging member anti-swinging position in the unstressed state, and the second self-resetting swinging member 54 is always in the second swinging member anti-swinging position in the unstressed state.
For convenience of description, the torsion spring for positioning the first self-resetting swinging member 53 is a first torsion spring, the torsion spring for positioning the second self-resetting swinging member 54 is a second torsion spring, the cross bar of the first self-resetting swinging member 53 is a first cross bar, and the cross bar of the second self-resetting swinging member 54 is a second cross bar, in this embodiment, when the first swinging member stops swinging, the first self-resetting swinging member 53 is restricted to continue swinging in a direction away from the isolation closing position, that is, in a direction away from the second swinging member stop swinging of the second self-resetting swinging member 54 by the stop fit of the first cross bar and the signal rod 52; the second self-resetting swinging member 54 limits the second self-resetting to a direction away from the ground closing position, that is, to the first swinging member stopping position away from the first self-resetting swinging member 53 to continue swinging when the second swinging member stopping position is matched with the movable rod stopping position through the second cross rod. The first rail on the first self-resetting swinging member 53 is provided on a side of the first self-resetting swinging member 53 away from the second self-resetting swinging member 54, and the second rail is provided on a side of the second self-resetting swinging member 54 away from the first self-resetting swinging member 53. In the isolating brake-separating position, along with the rotation of the cam 2, the cam 2 cooperates with the first self-resetting swinging piece 53 positioned at the first swinging piece anti-swinging position to press the signal rod 52, and the signal rod 52 presses a button on the switch body to trigger a brake-separating travel switch to send a brake-separating signal. In the ground connection brake release position, the cam 2 cooperates with the second self-resetting swinging member 54 positioned at the second swinging member stop position to press the signal rod 52, and the signal rod 52 presses a button on the switch body to trigger a brake release travel switch to send a brake release signal.
The first cross rod forms a first swinging piece blocking structure which is used for being matched with the signal rod blocking on the first self-resetting swinging piece, the first self-resetting swinging piece limits the first self-resetting swinging piece to swing continuously in the direction far away from the isolating closing position through the first swinging piece blocking structure and the signal rod blocking matching, the second cross rod forms a second swinging piece blocking structure which is used for being matched with the signal rod blocking on the second self-resetting swinging piece, and the second self-resetting swinging piece limits the second self-resetting swinging piece to swing continuously in the direction far away from the grounding closing position through the second swinging piece blocking structure and the signal rod blocking matching.
The cam 2 state conversion process of the three-station isolating switch is as follows: when the cam 2 moves from the isolating closing position to the isolating opening position, the cam 2 rotates clockwise, the cam 2 is firstly contacted with the second self-resetting swinging piece 54, the second self-resetting swinging piece 54 swings away from the second swinging piece stopping position under the action of the cam 2 until the cam 2 is separated from the second self-resetting swinging piece 54, the second self-resetting swinging piece 54 resets under the action of a torsion spring of the second self-resetting swinging piece, as shown in fig. 8, the cam 2 continuously rotates and contacts with the first self-resetting swinging piece 53, because the first cross rod of the first self-resetting swinging piece 53 is in stopping fit with the signal rod 52 due to the fact that the first self-resetting swinging piece 53 is in the first swinging piece stopping position, at the moment, the cam 2 rotates, as shown in fig. 9, the first self-resetting swinging piece 53 presses the signal rod 52 under the action of the cam 2, and the signal rod 52 presses the button to trigger the opening travel switch to send an opening signal.
When the cam 2 moves from the grounding closing position to the grounding opening position, the cam 2 rotates anticlockwise, the cam 2 is firstly contacted with the first self-resetting swinging piece 53, the first self-resetting swinging piece 53 swings away from the first swinging piece stopping position under the action of the cam 2 until the cam 2 is separated from the first self-resetting swinging piece 53, the first self-resetting swinging piece 53 resets under the action of a torsion spring of the first self-resetting swinging piece, as shown in fig. 10, the cam 2 continues to rotate anticlockwise and is contacted with the second self-resetting swinging piece 54, the second self-resetting swinging piece 54 is at the second swinging piece stopping position, at the moment, the cam 2 rotates, as shown in fig. 11, the second self-resetting swinging piece 54 presses the signal rod 52 under the action of the cam 2, and the signal rod 52 presses the button to trigger the opening travel switch to send an opening signal.
In this embodiment, the first self-resetting swinging member 53 is located at the position of the first swinging member 53 relative to the signal rod 52, the second self-resetting swinging member 54 is located at the position of the second self-resetting swinging member 54 relative to the signal rod 52, and the lengths and positions of the first and second self-resetting swinging members 54 are set according to the actual installation position.
In embodiment 2 of the three-position isolating switch of the present invention, the structure of the three-position isolating switch in this embodiment is different from that of the three-position isolating switch only in that: as shown in fig. 12 and 13, a signal rod 252 in the present embodiment is provided with a bidirectional swing stopping piece 253, a swing stroke of the bidirectional swing stopping piece 253 has a first swing stopping position and a second swing stopping position, when the cam 22 moves from the isolation closing position to the isolation opening position, the signal rod 252 is pressed by the bidirectional swing stopping piece 253 in the first swing stopping position to trigger the opening travel switch, and when the cam 22 moves from the grounding closing position to the grounding opening position, the signal rod 252 is pressed by the bidirectional swing stopping piece 253 in the first swing stopping position to trigger the opening travel switch 25. The two-way swing stopping piece 253 is different from the clamping plate type swing piece only in that two cross beams 250 are arranged on the two-way swing stopping piece 253, and the two cross beams 250 are respectively in a first swing stopping position and a second swing stopping position of the two-way swing stopping piece and are in stop fit with a signal rod.
In the specific embodiment of the travel switch of the present invention, the travel switch has the same structure as the brake-separating travel switch described in the specific embodiment 1 or 2 of the three-station isolating switch, and will not be described again.
In other embodiments of the travel switch and the three-position disconnecting switch using the travel switch, the hinge shaft on the bidirectional anti-swing piece is not provided with a torsion spring, and when the cam rotates to the grounding opening position, the bidirectional anti-swing piece at the first anti-swing position swings to the second anti-swing position under the action of the cam; the first self-resetting swinging piece and the second self-resetting swinging piece are arranged in parallel in the extending direction of the hinge shaft at the hinge positions on the signal rod, and the lengths of the first self-resetting swinging piece and the second self-resetting swinging piece can be different at the moment so as to meet the matching requirement of the first self-resetting swinging piece and the second self-resetting swinging piece with cams positioned at the isolating brake separation and the grounding brake separation; interference can be generated in the swinging process of the first self-resetting swinging piece and the second self-resetting swinging piece without affecting the opening travel switch; the torsion spring of the plate type swinging piece can be arranged at a certain angle with the clamping plate; the cross rod of the clamping plate type swinging piece is not required to be arranged, a blocking structure matched with the signal rod in a blocking mode at a set position can be arranged on the hinge shaft, a corresponding blocking structure matched with the clamping plate blocking mode can be arranged on the signal rod, the blocking structure can be omitted, the signal rod is pressed by the clamping plate type swinging piece through the torsion spring or the spring by changing the installation mode and the size specification of the torsion spring, the first swinging piece and the second swinging piece at the moment are required to be at the position that the signal rod is pressed by the swinging piece, the first swinging piece and the second swinging piece at the moment are not limited to one point, and the first swinging piece and the second swinging piece can be in a one-section stroke, and the swinging piece can be used for pressing the signal rod to move in the stroke; the above-mentioned switching-off travel switch may be a snap-action switch equipped with an arc extinguishing structure instead of a magnetic blow-off switch.
In other embodiments, the first self-resetting swinging member may not be in the first swinging member anti-swinging position under the unstressed state, and when the cam rotates, the first self-resetting swinging member swings in a direction close to the first swinging member anti-swinging position under the action of the cam until the first cross rod of the first self-resetting swinging member is in blocking fit with the signal rod, and the first self-resetting swinging member reaches the first swinging member anti-swinging position; similarly, the original position of the second self-resetting swinging member may not be in the first swinging member anti-swinging position.
Claims (10)
1. The three-station isolating switch comprises a main shaft linkage piece, wherein an isolating switch-on position, a grounding switch-on position, an isolating switch-off position and a grounding switch-off position are arranged on the rotating stroke of the main shaft linkage piece, and the three-station isolating switch-off switch is characterized in that: the three-station isolating switch further comprises a brake separating travel switch corresponding to the main shaft linkage piece positioned at the isolating brake separating position and the grounding brake separating position, and the brake separating travel switch comprises a switch body and a signal rod hinged on the switch body and used for triggering the brake separating travel switch after being pressed; the signal rod is hinged with a first self-resetting swinging piece and a second self-resetting swinging piece, the first self-resetting swinging piece is provided with a first swinging piece anti-swinging position on a swinging stroke swinging far away from an isolation closing position, and the second self-resetting swinging piece is provided with a second swinging piece anti-swinging position on a swinging stroke swinging far away from a grounding closing position; when the main shaft linkage piece is in an isolated opening position, the opening travel switch is triggered by a first self-resetting swinging piece pressing signal rod positioned at the first swinging piece stopping position, and when the main shaft linkage piece is in a grounded opening position, the opening travel switch is triggered by a second self-resetting swinging piece pressing signal rod positioned at the second swinging piece stopping position, and the rotation axes of the first self-resetting swinging piece and the second self-resetting swinging piece are parallel;
or the signal rod is provided with a bidirectional anti-swing piece, and the swing stroke of the bidirectional anti-swing piece is provided with a first anti-swing position and a second anti-swing position; the main shaft linkage piece is triggered to be separated from the brake stroke switch through a bidirectional swing stopping piece pressing signal rod at a first swing stopping position when the isolation brake closing position moves to the isolation brake separating position, and is triggered to be separated from the brake stroke switch through a bidirectional swing stopping piece pressing signal rod at the first swing stopping position when the grounding brake closing position moves to the grounding brake separating position, and the swing axis of the bidirectional swing stopping piece is parallel to the rotation axis of the main shaft linkage piece.
2. The three-position disconnector according to claim 1, characterized in that: the hinge positions of the first self-resetting swinging piece and the second self-resetting swinging piece on the signal rod are arranged at intervals in the extending direction of the signal rod and have a set interval, so that the first self-resetting swinging piece and the second self-resetting swinging piece are mutually independent in the swinging process.
3. A three-position disconnector according to claim 1 or 2, in which: the first self-resetting swinging piece is provided with a first torsion spring, two torsion arms of the first torsion spring are respectively fixed on the signal rod and the first self-resetting swinging piece, the first self-resetting swinging piece realizes self-resetting through the first torsion spring, and/or the second self-resetting swinging piece is provided with a second torsion spring, two torsion arms of the second torsion spring are respectively fixed on the signal rod and the second self-resetting swinging piece, and the second self-resetting swinging piece realizes resetting through the second torsion spring.
4. A three-position disconnector according to claim 1 or 2, in which: the first self-resetting swinging piece and/or the second self-resetting swinging piece are/is clamping plate type swinging pieces, each clamping plate type swinging piece comprises two clamping plates which are respectively positioned at two sides of the signal rod and a hinge shaft which is relatively fixed with the two clamping plates and penetrates through the signal rod, each clamping plate type swinging piece is hinged on the signal rod through the hinge shaft, each clamping plate type swinging piece comprises a cross rod which is connected with the two clamping plates, and the first self-resetting swinging piece is limited to continuously swing in a direction far away from the isolating closing position when the first swinging piece is in a swinging stop position through the cross rod and the signal rod stop fit; the second self-resetting swinging piece is limited to swing continuously in a direction far away from the grounding closing position by the stop fit of the cross rod and the signal rod of the second swinging piece when the second swinging piece stops swinging.
5. A three-position disconnector according to claim 1 or 2, in which: the switching-off travel switch is a magnetic blowing switch, and the signal rod is composed of a movable rod on the magnetic blowing switch.
6. Travel switch, its characterized in that: the switch comprises a switch body and a signal rod which is hinged on the switch body and triggers a travel switch after being pressed, wherein a first self-resetting swinging piece and a second self-resetting swinging piece are hinged on the signal rod, a swinging travel of the first self-resetting swinging piece is provided with a first swinging piece stopping position, and a swinging travel of the second self-resetting swinging piece is provided with a second swinging piece stopping position; the first swinging piece and the second swinging piece are arranged far away from each other, the first self-resetting swinging piece is positioned at the first swinging piece and is pressed by the signal rod after being pressed to trigger the travel switch, the second self-resetting swinging piece is positioned at the second swinging piece and is pressed by the signal rod after being pressed to trigger the travel switch, and the rotating axes of the first self-resetting swinging piece and the second self-resetting swinging piece are parallel;
or the signal rod is provided with a bidirectional anti-swing piece, and the swing stroke of the bidirectional anti-swing piece is provided with a first anti-swing position and a second anti-swing position which are mutually far away from each other; the bidirectional swing stopping piece is arranged at the first swing stopping position or is arranged at the first swing stopping position, the signal rod is pressed to trigger the travel switch after the pressure of the main shaft linkage piece is applied, and the end part of the bidirectional swing stopping piece, which is far away from the signal piece, is provided with a roller.
7. The travel switch of claim 6, wherein: the hinge positions of the first self-resetting swinging piece and the second self-resetting swinging piece on the signal rod are arranged at intervals in the extending direction of the signal rod and have a set interval, so that the first self-resetting swinging piece and the second self-resetting swinging piece are mutually independent in the swinging process.
8. A travel switch according to claim 6 or 7, wherein: the first self-resetting swinging piece is provided with a first torsion spring, two torsion arms of the first torsion spring are respectively fixed on the signal rod and the first self-resetting swinging piece, the first self-resetting swinging piece realizes self-resetting through the first torsion spring, and/or the second self-resetting swinging piece is provided with a second torsion spring, two torsion arms of the second torsion spring are respectively fixed on the signal rod and the second self-resetting swinging piece, and the second self-resetting swinging piece realizes resetting through the second torsion spring.
9. A travel switch according to claim 6 or 7, wherein: the first self-resetting swinging piece and/or the second self-resetting swinging piece are/is clamping plate type swinging pieces, each clamping plate type swinging piece comprises two clamping plates which are respectively positioned at two sides of the signal rod and a hinge shaft which is relatively fixed with the two clamping plates and penetrates through the signal rod, each clamping plate type swinging piece is hinged on the signal rod through the corresponding hinge shaft, each clamping plate type swinging piece comprises a cross rod which is connected with the corresponding two clamping plates, and the first self-resetting swinging piece is limited to continuously swing in a direction far away from the stop position of the corresponding second swinging piece when the first swinging piece stops swinging through the stop fit of the cross rod and the signal rod; the second self-resetting swinging piece is limited to swing continuously in a direction far away from the first swinging piece by the stop fit of the cross rod and the signal rod of the second self-resetting swinging piece when the second swinging piece stops swinging.
10. A travel switch according to claim 6 or 7, wherein: the travel switch is a magnetic blow switch, and the signal rod is composed of a movable rod on the magnetic blow switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710391230.9A CN108933057B (en) | 2017-05-27 | 2017-05-27 | Three-station isolating switch and travel switch thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710391230.9A CN108933057B (en) | 2017-05-27 | 2017-05-27 | Three-station isolating switch and travel switch thereof |
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| CN108933057A CN108933057A (en) | 2018-12-04 |
| CN108933057B true CN108933057B (en) | 2024-01-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114242472B (en) * | 2021-11-05 | 2024-04-16 | 河南平高电气股份有限公司 | Switching-on and switching-off stroke adjusting device, switch operating mechanism and switch |
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| CN108933057A (en) | 2018-12-04 |
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