CN111769001A

CN111769001A - Disconnecting switch device of isolating switch

Info

Publication number: CN111769001A
Application number: CN202010491916.7A
Authority: CN
Inventors: 余成鹏
Original assignee: Wenzhou Lucheng Yuanlong Electrical Technology Co ltd
Current assignee: Wenzhou Lucheng Yuanlong Electrical Technology Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2020-10-13

Abstract

The invention discloses a disconnecting link device of an isolating switch, which comprises a supporting seat, wherein the top of the supporting seat is respectively and fixedly connected with a left insulating strut and a right insulating strut, the top of the left insulating strut is fixedly connected with a left wiring contact, the top of the right insulating strut is fixedly connected with a right wiring contact, the top of the left wiring contact is movably provided with a disconnecting link, one end of the disconnecting link is fixedly connected with an insulating plate, one end of the insulating plate, far away from the disconnecting link, is fixedly connected with a connecting block, and the bottom of the connecting block is fixedly connected with a first telescopic rod. According to the invention, the lifting plate is moved upwards, so that the lifting plate drives the limiting block to move to the position under the blocking block through the hinge seat matched with the hinge rod and the movable rod, and the disconnecting link is stably lapped on the tops of the left wiring contact and the right wiring contact all the time through the limiting block and the blocking block, so that the purpose that two ends of the disconnecting link are respectively in full contact with the left wiring contact and the right wiring contact can be realized.

Description

Disconnecting switch device of isolating switch

Technical Field

The invention relates to the technical field of isolating switches, in particular to a disconnecting link device of an isolating switch.

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 high-voltage isolating switch is generally used as a high-voltage isolating switch, namely an isolating switch with rated voltage of more than 1kV, the high-voltage isolating switch has a simple working principle and structure, but has high requirements on working reliability due to large usage amount, and has large influence on the design, establishment and safe operation of a substation and a power plant. The main characteristic of the isolating switch is that it has no arc-extinguishing capability, and can only open and close the circuit under the condition of no load current. The vocabulary entry introduces the function, characteristics, type, application, error improvement prevention, maintenance, common problems and the like of the isolating switch.

However, in the prior art, when in actual use, the springs provide contact pressure between the stationary contact base and the contact fingers and between the cylindrical contact and the contact fingers, the contact fingers distributed on two sides of the contact are in contact with the cylindrical contact during closing, and the contact parts of the contact are statically limited on two sides of the contact, so that the contact cannot be fully contacted under the influence of external environment when in current-carrying operation, the unbalanced resistance is increased, the contact is heated, and finally the contact is burnt.

Disclosure of Invention

The present invention is directed to a disconnecting link device of an isolating switch, so as to solve the problems mentioned in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: comprises a supporting seat, the top of the supporting seat is respectively fixedly connected with a left insulating strut and a right insulating strut, the top of the left insulating strut is fixedly connected with a left wiring contact, the top of the right insulating strut is fixedly connected with a right wiring contact, the top of the left wiring contact is movably provided with a disconnecting link, one end of the disconnecting link is fixedly connected with an insulating plate, one end of the insulating plate, which is far away from the disconnecting link, is fixedly connected with a connecting block, the bottom of the connecting block is fixedly connected with a first telescopic rod, the surface of the first telescopic rod is fixedly connected with a first damping spring, the bottom of the first telescopic rod is fixedly connected with a lifting plate, the top of one end, which corresponds to the position of the right wiring contact, of the lifting plate is fixedly connected with a hinged seat, one end, which is far away from the position of the lifting plate, the one end middle part of the corresponding stopper position of articulated link rotates and is connected with the movable rod, the activity groove has been seted up to the one end of the corresponding movable rod position of insulation board, and the inner wall in activity groove and the surface sliding connection of movable rod, the surface of stopper closely laminates and has blockked the piece, block the surface of piece fixed connection at right side wiring contact.

Preferably, the top of the left wiring contact is fixedly connected with a fixed support, the middle of the fixed support is fixedly connected with a pin shaft, the disconnecting link is rotatably connected to the surface of the pin shaft, and the disconnecting link is movably connected to the surface of the fixed support.

Preferably, the number of disconnecting link is two, and two disconnecting links are symmetry axis symmetry setting about the vertical axis of left wiring contact mid point, insulation board fixed connection is in the one end of two disconnecting link opposite faces, connecting block fixed connection is between two insulation boards.

Preferably, the middle parts of the ends, far away from the left wiring contact, of the two disconnecting switches are respectively penetrated and embedded with a fixed column, through holes are formed in the surface of the fixed support, positioning pins are inserted into the inner walls of the through holes, positioning slide rails are fixedly connected to the tops of the positions, corresponding to the positioning pins, of the disconnecting switches, and rubber pads are fixedly connected to the inner walls of the positioning slide rails.

Preferably, the number of the through holes is two, and the two through holes are arranged on the surface of the fixed support respectively.

Preferably, the size of the inner wall of the positioning slide rail is matched with that of the positioning pin, the positioning slide rail is of an arc structure, and the arc center of the positioning slide rail and the circle center of the pin shaft are horizontally arranged in a collinear manner.

Preferably, the fixed pipe of top fixedly connected with at promotion board middle part, the inner wall of fixed pipe is rotated through the bearing and is connected with the threaded rod, the surperficial threaded connection of threaded rod has the thread bush, the thread bush runs through the middle part of embedding at the connecting block.

Preferably, the number of the first telescopic rods is two, and the two first telescopic rods are symmetrically arranged around the vertical axis of the midpoint of the lifting plate.

Preferably, the inside of the position of the insulating plate corresponding to the movable groove is provided with a guide groove, and the inside of the guide groove is communicated with the inside of the movable groove.

Preferably, the inner wall swing joint of guide way has the guide block, the recess has been seted up to the one end of the corresponding movable rod of guide block, and the inner wall of recess and the surperficial swing joint of movable rod, the one end fixedly connected with second telescopic link that the guide block kept away from the guide way position, and second telescopic link fixed connection is at the inner wall of guide way, the fixed surface of second telescopic link is connected with second damping spring.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the lifting plate is moved upwards, so that the lifting plate drives the limiting block to move to the position under the blocking block through the hinge seat matched with the hinge rod and the movable rod, and the disconnecting link is stably lapped on the tops of the left wiring contact and the right wiring contact all the time through the limiting block and the blocking block, so that the purpose that two ends of the disconnecting link are respectively in full contact with the left wiring contact and the right wiring contact can be realized;

2. the invention also sets two positioning pins to match with the positioning slide rail, so that when the device is switched off, the disconnecting link is reversely rotated, the positioning pins are movably connected with the inner wall of the positioning slide rail, the angle of the disconnecting link can be limited by the positioning pins, and the friction between the positioning pins and the positioning slide rail is increased by the rubber pads fixed on the inner wall of the positioning slide rail, thereby preventing the disconnecting link from being switched on accidentally.

3. The invention also enables the threaded rod to be matched with the threaded sleeve and the fixed pipe by rotating the threaded rod, so that the threaded rod can drive the lifting plate to move up and down through the fixed pipe when rotating, thereby providing power for the up-and-down movement of the lifting plate.

4. The guide block, the second telescopic rod and the second damping spring are arranged, so that when the lifting plate moves upwards and the hinge seat is matched with the hinge rod to drive the movable rod to move towards one end of the right wiring contact, the guide block is driven to extrude the second telescopic rod and the second damping spring, and when the lifting plate moves downwards, the movable rod is driven to move towards one end far away from the right wiring contact through the guide block under the action of resetting and stretching of the second telescopic rod and the second damping spring, so that the device has the function of restoring the initial position.

Drawings

Fig. 1 is a front view of the overall structure of a disconnecting link device of an isolating switch of the invention;

FIG. 2 is a front sectional view of the overall structure of a disconnecting link device of an isolating switch according to the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2 of the knife switch device of the isolating switch of the present invention;

FIG. 4 is a partial front sectional view of the overall structure of the disconnecting link device of the disconnecting switch according to the present invention;

fig. 5 is a partial front sectional view of the insulation board structure of the disconnecting link device of the disconnecting switch of the present invention.

In the figure: 100. a supporting seat; 101. a left insulating strut; 102. a right insulating pillar; 103. a left wiring contact; 104. a right wiring contact; 105. a fixed support; 106. a pin shaft; 107. a disconnecting link; 108. an insulating plate; 109. connecting blocks; 110. a first telescopic rod; 111. a first damping spring; 112. a lifting plate; 113. a hinged seat; 114. a hinged lever; 115. a limiting block; 116. a movable rod; 117. a movable groove; 118. a blocking block; 119. fixing a column; 120. a fixed tube; 121. a threaded rod; 122. a threaded sleeve; 123. a through hole; 124. positioning pins; 125. positioning the slide rail; 126. a guide groove; 127. a guide block; 128. a second telescopic rod; 129. a second damping 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.

Referring to fig. 1-5, the present invention provides a technical solution: the device comprises a supporting seat 100, wherein a left insulating strut 101 and a right insulating strut 102 are respectively and fixedly mounted at the top of the supporting seat 100, a left wiring contact 103 is fixedly mounted at the top of the left insulating strut 101, a right wiring contact 104 is fixedly mounted at the top of the right insulating strut 102, a disconnecting link 107 is movably arranged at the top of the left wiring contact 103, an insulating plate 108 is fixedly mounted at one end of the disconnecting link 107, a connecting block 109 is fixedly mounted at one end, away from the disconnecting link 107, of the insulating plate 108, a first telescopic rod 110 is fixedly mounted at the bottom of the connecting block 109, a first damping spring 111 is fixedly mounted on the surface of the first telescopic rod 110, a lifting plate 112 is fixedly mounted at the bottom of the first telescopic rod 110, a hinge seat 113 is fixedly mounted at the top of one end, away from the position of the lifting plate 112, of the hinge seat 113, a hinge rod 114 is hinged to the end, the middle part of one end of the hinged rod 114 corresponding to the position of the limiting block 115 is rotatably connected with a movable rod 116, one end of the insulating plate 108 corresponding to the position of the movable rod 116 is provided with a movable groove 117, the inner wall of the movable groove 117 is slidably connected with the surface of the movable rod 116, the surface of the limiting block 115 is tightly attached with a blocking block 118, and the blocking block 118 is fixedly installed on the surface of the right wiring contact 104.

The top of the left wiring contact 103 is fixedly provided with a fixed support 105, the middle part of the fixed support 105 is fixedly provided with a pin 106, a disconnecting link 107 is rotatably connected on the surface of the pin 106, and the disconnecting link 107 is movably connected on the surface of the fixed support 105.

The quantity of switch 107 is two, and two switches 107 are for the symmetry axis symmetry setting about the vertical axis of left wiring contact 103 mid point, and insulating board 108 fixed mounting is in the one end of two switch 107 opposite faces, and connecting block 109 fixed mounting is between two insulating boards 108.

The middle parts of the ends, far away from the left wiring contact 103, of the two disconnecting switches 107 are respectively provided with a fixing column 119 in a penetrating and embedding manner, the surface of the fixing support 105 is provided with a through hole 123, the inner wall of the through hole 123 is inserted with a positioning pin 124, the top of the disconnecting switch 107 corresponding to the position of the positioning pin 124 is fixedly provided with a positioning slide rail 125, and the inner wall of the positioning slide rail 125 is fixedly provided with a rubber pad.

The quantity of through-hole 123 is two, and two through-holes 123 are equallyd divide and are seted up respectively on fixing support 105's surface, through setting up two locating pin 124 cooperation location slide rails 125, make when the device separating brake, with switch 107 antiport, and make locating pin 124 swing joint at the inner wall of location slide rail 125, can prescribe a limit to the angle of switch 107 separating brake through locating pin 124, and through the fixed rubber pad of location slide rail 125 inner wall, increase the friction between locating pin 124 and the location slide rail 125, thereby prevent the unexpected circumstances of closing a floodgate of switch 107.

The size of the inner wall of the positioning slide rail 125 is matched with the size of the positioning pin 124, the positioning slide rail 125 is of an arc-shaped structure, and the arc center of the positioning slide rail 125 and the center of the pin shaft 106 are horizontally arranged in a collinear manner.

Fixed mounting has fixed pipe 120 at the top at lifting plate 112 middle part, the inner wall of fixed pipe 120 rotates through the bearing and is connected with threaded rod 121, threaded rod 121's surperficial threaded connection has thread bush 122, thread bush 122 runs through the embedding at the middle part of connecting block 109, through rotating threaded rod 121, make threaded rod 121 and thread bush 122 and fixed pipe 120 between cooperate, thereby make threaded rod 121 when rotating, can drive lifting plate 112 through fixed pipe 120 and reciprocate, thereby provide power for reciprocating of lifting plate 112.

The number of the first telescopic bars 110 is two, and the two first telescopic bars 110 are symmetrically arranged about a vertical axis of a midpoint of the lifting plate 112.

The inside of the insulating plate 108 corresponding to the position of the movable groove 117 is provided with a guide groove 126, and the inside of the guide groove 126 is communicated with the inside of the movable groove 117.

The inner wall of the guide groove 126 is movably connected with a guide block 127, one end of the guide block 127 corresponding to the movable rod 116 is provided with a groove, the inner wall of the groove is movably connected with the surface of the movable rod 116, one end of the guide block 127 far away from the position of the guide groove 126 is fixedly provided with a second telescopic rod 128, the second telescopic rod 128 is fixedly arranged on the inner wall of the guide groove 126, the surface of the second telescopic rod 128 is fixedly provided with a second damping spring 129, through the arrangement of the guide block 127, the second telescopic rod 128 and the second damping spring 129, when the lifting plate 112 moves upwards and the hinged seat 113 is matched with the hinged rod 114 to drive the movable rod 116 to move towards one end of the right wiring contact 104, the guide block 127 is driven to extrude the second telescopic rod 128 and the second damping spring 129, and when the lifting plate 112 moves downwards, the guide block 128 is matched with the second damping spring 129 to reset and stretch, the movable rod 116 is driven by the guide block 127 to move towards one end far, thereby allowing the device to have a function of restoring the original position.

The working principle is as follows: when the device is used, the knife switch 107 is rotated by taking one end of the top of the left insulating support 101 as a rotating shaft, and one end of the knife switch 107 far away from the left wiring contact 103 is movably lapped on the top of the right wiring contact 104, so that the switching-on operation is completed, and after the switching-on operation of the knife switch 107 is completed, the lifting plate 112 is enabled to extrude the first telescopic rod 110 and the first damping spring 111 by upwards moving the lifting plate 112, and when the lifting plate 112 moves upwards, the lifting plate 112 drives the hinge base 113 to move upwards, and the hinge base 113 drives the hinge rod 114 to hinge, so that the hinge rod 114 drives the movable rod 116 to move towards one end of the right wiring contact 104 on the inner wall of the movable groove 117, until the hinge rod 114 drives the limit block 115 to move to the position right below the stop block 118, at the moment, the knife switch 107 cannot rotate reversely any more by the cooperation of the limit block 115 and the stop block 118, so that, the switch 107 is stably lapped on the top of the left wiring contact 103 and the right wiring contact 104 all the time, so that the purpose that two ends of the switch 107 are respectively in full contact with the left wiring contact 103 and the right wiring contact 104 can be achieved, and when the switch is required to be switched off, the lifting plate 112 is moved downwards, the lifting plate 112 drives the limiting block 115 to move towards one end away from the position of the blocking block 118 through the hinge seat 113, the hinge rod 114 and the movable rod 116, the limiting block 115 is separated from the blocking block 118, and the switch switching-off operation can be completed by rotating the switch 107 upwards at the moment.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a disconnecting link device of isolating switch, includes supporting seat (100), its characterized in that: the top of the supporting seat (100) is respectively fixedly connected with a left insulating support (101) and a right insulating support (102), the top of the left insulating support (101) is fixedly connected with a left wiring contact (103), the top of the right insulating support (102) is fixedly connected with a right wiring contact (104), the top of the left wiring contact (103) is movably provided with a disconnecting link (107), one end of the disconnecting link (107) is fixedly connected with an insulating plate (108), one end of the insulating plate (108) far away from the disconnecting link (107) is fixedly connected with a connecting block (109), the bottom of the connecting block (109) is fixedly connected with a first telescopic rod (110), the surface of the first telescopic rod (110) is fixedly connected with a first damping spring (111), the bottom of the first telescopic rod (110) is fixedly connected with a lifting plate (112), and the lifting plate (112) is hinged with a top of one end of the position corresponding to the right wiring contact (104) and is fixedly connected, articulated seat (113) keep away from the one end that promotes board (112) position and articulate there is articulated pole (114), articulated pole (114) are kept away from one end fixedly connected with stopper (115) of articulated seat (113) position, the one end middle part of the corresponding stopper (115) position of articulated pole (114) rotates and is connected with movable rod (116), movable groove (117) have been seted up to the one end of the corresponding movable rod (116) position of insulation board (108), and the sliding surface connection of the inner wall of movable groove (117) and movable rod (116), the surface of stopper (115) is closely laminated and is had stopper (118), stopper (118) fixed connection is on the surface of right wiring contact (104).

2. The disconnecting link device of a disconnecting switch according to claim 1, wherein: the top fixedly connected with fixing support (105) of left side wiring contact (103), the middle part fixedly connected with round pin axle (106) of fixing support (105), switch (107) rotate to be connected on the surface of round pin axle (106), and switch (107) swing joint is on the surface of fixing support (105).

3. The disconnecting link device of a disconnecting switch according to claim 1, wherein: the quantity of switch (107) is two, and two switches (107) set up for symmetry axis symmetry about the vertical axis of left wiring contact (103) mid point, insulation board (108) fixed connection is in the one end of two switch (107) opposite faces, connecting block (109) fixed connection is between two insulation boards (108).

4. The disconnecting link device of the disconnecting switch according to claim 2, wherein: two one end middle part that left side wiring contact (103) was kept away from in switch (107) all runs through the embedding and has fixed column (119), through-hole (123) have been seted up on the surface of fixed bolster (105), the inner wall of through-hole (123) is pegged graft and is had locating pin (124), the top fixedly connected with location slide rail (125) of switch (107) corresponding locating pin (124) position, and the inner wall fixedly connected with rubber pad of location slide rail (125).

5. The disconnecting link device of the disconnecting switch according to claim 4, wherein: the number of the through holes (123) is two, and the two through holes (123) are respectively arranged on the surface of the fixed support (105).

6. The disconnecting link device of a disconnecting switch according to claim 1, wherein: the size of location slide rail (125) inner wall and the big or small looks adaptation of locating pin (124), and location slide rail (125) are the arc structure, the arc center of location slide rail (125) and the horizontal collineation setting of the centre of a circle of round pin axle (106).

7. The disconnecting link device of a disconnecting switch according to claim 1, wherein: the fixed pipe (120) of top fixedly connected with in lifting plate (112) middle part, the inner wall of fixed pipe (120) rotates through the bearing and is connected with threaded rod (121), the surperficial threaded connection of threaded rod (121) has thread bush (122), thread bush (122) run through the middle part of embedding at connecting block (109).

8. The disconnecting link device of a disconnecting switch according to claim 1, wherein: the number of the first telescopic rods (110) is two, and the two first telescopic rods (110) are symmetrically arranged around the vertical axis of the midpoint of the lifting plate (112).

9. The disconnecting link device of a disconnecting switch according to claim 1, wherein: the inside of the position, corresponding to the movable groove (117), of the insulating plate (108) is provided with a guide groove (126), and the inside of the guide groove (126) is communicated with the inside of the movable groove (117).

10. The disconnecting link device of the disconnecting switch according to claim 9, wherein: the inner wall swing joint of guide way (126) has guide block (127), the one end of the corresponding movable rod (116) of guide block (127) is seted up flutedly, and the surface swing joint of the inner wall of recess and movable rod (116), the one end fixedly connected with second telescopic link (128) of guide way (126) position is kept away from in guide block (127), and second telescopic link (128) fixed connection is at the inner wall of guide way (126), the fixed surface of second telescopic link (128) is connected with second damping spring (129).