WO2023005190A1 - 一种有载分接开关的往复式切换机构 - Google Patents

一种有载分接开关的往复式切换机构 Download PDF

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Publication number
WO2023005190A1
WO2023005190A1 PCT/CN2022/076017 CN2022076017W WO2023005190A1 WO 2023005190 A1 WO2023005190 A1 WO 2023005190A1 CN 2022076017 W CN2022076017 W CN 2022076017W WO 2023005190 A1 WO2023005190 A1 WO 2023005190A1
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WO
WIPO (PCT)
Prior art keywords
assembly
connecting rod
sliding
load tap
moving contact
Prior art date
Application number
PCT/CN2022/076017
Other languages
English (en)
French (fr)
Inventor
汪可
张书琦
李鹏
李金忠
殷禹
李戈琦
李嘉熙
杨帆
李刚
程涣超
张农
吴景铼
孙建涛
刘雪丽
Original Assignee
中国电力科学研究院有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国电力科学研究院有限公司 filed Critical 中国电力科学研究院有限公司
Priority to EP22847810.3A priority Critical patent/EP4336530A1/en
Publication of WO2023005190A1 publication Critical patent/WO2023005190A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current

Definitions

  • the invention relates to the technical field of transformer on-load tap-changers, in particular to a reciprocating switching mechanism of on-load tap-changers.
  • the on-load tap-changer is a special switch used to switch the taps of the primary or secondary windings to adjust the output voltage when the transformer is loaded.
  • Combined vacuum on-load tap-changers are often used for on-load voltage regulation of transformers.
  • Combined vacuum on-load tap-changers are usually composed of three major components: a drive mechanism, a selector and a switch; the drive mechanism includes a motor, Hand operating mechanism, brake, counter, position indicator, control small switch and a complex set of transmission gears, the driving mechanism is used to operate the switch; the switch is composed of a quick mechanism, a main on-off contact and a reciprocating mechanical contact, and The transition resistance constitutes.
  • the gear position is preselected by the selector first, and then the gear position is switched by the diverter switch.
  • the fast mechanism is connected with the motor to drive each contact to complete the switching.
  • the object of the present invention is to provide a reciprocating switching mechanism for an on-load tap changer.
  • a reciprocating switching mechanism for an on-load tap changer including a connecting assembly and at least one switching assembly;
  • the switching assembly includes two switching units, two The switching units are respectively arranged on opposite sides of the connecting assembly, and the two switching units are connected to the connecting assembly through a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod The rods are separated by a preset distance, and the first connecting rod can slide relative to the connecting assembly;
  • the switching unit includes a moving contact assembly and two static contacts, and the two static contacts are respectively located on the moving contact assembly.
  • the moving contact assembly is used to connect with the static contact, and the moving contact assembly can slide relative to the static contact; one end of the two static contacts is connected to the The external support is connected, the moving contact assembly is connected with the connecting assembly through the first connecting rod and the second connecting rod, and the moving contact assembly can be around the central axis of the second connecting rod turn.
  • the connection assembly includes a fixed disk and a rotating disk, and a rotating hole is opened on the fixed disk, and the rotating hole is along the The central axis direction of the fixed disk runs through the fixed disk, the fixed disk is provided with a fixed hole, the second connecting rod is passed through the fixed hole, and the rotating disk is provided with at least one a slideway, the slideway extends along the circumference of the rotating disc, the first connecting rod can slide along the slideway, the rotating disc is inserted in the rotating hole, the The rotating disk can rotate relative to the fixed disk.
  • the moving contact assembly includes a rotating plate and two clamping assemblies, and the rotating plate passes through the first connecting rod and the second The connecting rod is connected with the connecting assembly, the rotating plate can rotate around the central axis of the second connecting rod, and the two clamping assemblies are arranged oppositely on the rotating plate, and the clamping assembly and the The static contacts are provided in one-to-one correspondence, and the clamping assembly is used for clamping the static contacts.
  • the switching assembly further includes a sliding assembly, and the sliding assembly is located on the side of the second connecting rod away from the first connecting rod, so The sliding assembly is passed through the connecting assembly, and the two ends of the sliding assembly are respectively inserted on the two switching units, and the sliding assembly is slidably connected to the switching unit; the sliding assembly can slide relative to the connection assembly.
  • the sliding assembly includes a sliding rod and two sliding blocks oppositely arranged, and the sliding blocks are arranged in one-to-one correspondence with the switching unit, and the The sliding bar is passed through the connecting assembly, and the two ends of the sliding bar are respectively inserted in the two sliding blocks, and the sliding bar can slide relative to the connecting assembly; a chute, the chute passes through the rotating plate along the central axis of the first connecting rod, the slider is inserted in the chute, and the slider can slide along the chute .
  • the moving contact assembly further includes an elastic member, and a mounting hole is opened on the side of the chute away from the slider, and the elastic member One end of the elastic member is connected to the outer peripheral wall of the second connecting rod through a mounting hole, and the other end of the elastic member is connected to the slider; the elastic member is in a compressed state, and the restoring force of the elastic member is used to push the The rotating plate rotates.
  • the clamping assembly includes two clamping plates oppositely arranged, and the two clamping plates are respectively arranged at the top and bottom ends of the rotating plate, so that The clamping plate can rotate relative to the rotating plate, and there is a preset distance between the two clamping plates for connecting the clamping assembly with the static contact.
  • the splint is provided with an arc-shaped shrapnel
  • the top of the splint is provided with a groove
  • the arc-shaped shrapnel is arranged in the groove
  • the arc-shaped elastic piece is detachably connected with the splint
  • the arc-shaped elastic piece is used for restoring the splint.
  • the static contact includes a fixed part, a first connecting part and a second connecting part, and the first connecting part and the second connecting part respectively arranged on opposite sides of the fixed part, the first connecting part is used for connecting with the moving contact assembly; the first connecting part is along the The thickness increases gradually along the length direction.
  • the beneficial technical effects of the present invention are: the reciprocating switching mechanism of the on-load tap changer provided by the application includes a connection assembly and at least one switching assembly;
  • the switching assembly includes two switching units, and the two switching units are respectively Arranged on opposite sides of the connecting assembly, the two switching units are connected to the connecting assembly through a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are separated by a preset distance, and the first connecting rod can be opposite to each other
  • the switching unit includes a moving contact assembly and two static contacts, and the two static contacts are respectively located on opposite sides of the moving contact assembly.
  • the moving contact assembly is used to connect with the static contact, and the moving contact assembly It can slide relative to the static contact; one end of the two static contacts is connected to the external support, the moving contact assembly is connected to the connecting assembly through the first connecting rod and the second connecting rod, and the moving contact assembly can be connected around the second connecting rod The central axis of the rod rotates.
  • Fig. 1 is a schematic diagram of the principle of an on-load tap changer provided by an embodiment of the present invention.
  • Fig. 2 is a schematic diagram of the three-phase overall structure of the reciprocating switching mechanism of the on-load tap changer provided by the embodiment of the present invention.
  • Fig. 3 is a schematic diagram 1 of the overall single-phase structure of the reciprocating switching mechanism of the on-load tap changer provided by the embodiment of the present invention.
  • Fig. 4 is a schematic diagram 2 of the overall single-phase structure of the reciprocating switching mechanism of the on-load tap changer provided by the embodiment of the present invention.
  • Fig. 5 is a schematic structural view of the static contact in the reciprocating switching mechanism of the on-load tap changer provided by the embodiment of the present invention.
  • Fig. 6 is the mechanical schematic diagram 1 of the reciprocating switching mechanism of the on-load tap changer provided by the embodiment of the present invention.
  • Fig. 7 is the second mechanical schematic diagram of the reciprocating switching mechanism of the on-load tap changer provided by the embodiment of the present invention.
  • Fig. 8 is the third mechanical principle diagram of the reciprocating switching mechanism of the on-load tap changer provided by the embodiment of the present invention.
  • Fig. 9 is a time sequence diagram 1 of the reciprocating switching mechanism of the on-load tap changer provided by the embodiment of the present invention (switching from odd-numbered gears to even-numbered gears).
  • Fig. 10 is a time sequence diagram 2 of the reciprocating switching mechanism of the on-load tap changer provided by the embodiment of the present invention (switching from even-numbered gears to odd-numbered gears).
  • Fig. 11 is a circuit diagram corresponding to the timing diagram of the reciprocating switching mechanism of the on-load tap changer provided by the embodiment of the present invention.
  • Reciprocating switching mechanism 10. Connecting assembly; 101. Fixed disc; 1011. Sliding port; 102. Rotating disc; 1021. Slideway; 20. Switching unit; 201. Moving contact assembly; 2011 , rotating plate; 20111, chute; 2012, plywood; 20121, arc shrapnel; 20122, rotating shaft; 2013, elastic piece; 202, static contact; 2021, fixed part; 2022, first connecting part; Connecting part; 30, first connecting rod; 40, second connecting rod; 50, sliding assembly; 501, sliding rod; 502, sliding block; 2, principle component; 21, turntable; 211, arc-shaped groove; 22 , swing rod; 221, the second slide rail; 23, fixed plate; 231, the first slide rail; 24, the first pole; 25, the second pole; 26, the third pole; 27, spring; 28, Fixed block.
  • the on-load tap-changer is used for on-load voltage regulation of the transformer, which can adjust the output voltage of the transformer by changing the turns ratio of the winding connected to the power grid.
  • Fig. 9 in this embodiment, it takes 110 seconds for the on-load tap-changer to switch from odd-numbered taps to even-numbered taps, and goes through 10 switching states, and each switching state transition corresponds to a contact inside the on-load tap-changer.
  • the action of the head as shown in Figure 9 and Figure 11, the action sequence of odd-numbered taps connected to even-numbered taps is: MC1 is turned off, V2 and V3 are closed, V1 is turned off, Z1 is connected to terminal b, V1 is closed, V2 and V3 are opened Off, Z2 is connected to terminal d, and MC2 is closed.
  • Fig. 10 in this embodiment, it takes a total of 110s for the on-load tap-changer to switch from even-numbered taps to odd-numbered taps, and goes through 10 switching states, and each switching state transition corresponds to a contact inside the on-load tap-changer.
  • the action of the head as shown in Figure 10 and Figure 11, the action sequence of the even-numbered tap to the odd-numbered tap is: MC2 is turned off, V2 and V3 are closed, V1 is turned off, Z1 is connected to terminal a, V1 is closed, V2 and V3 are opened off, Z2 is connected to terminal c, and MC1 is closed.
  • Z2 is a reciprocating switching mechanism, and its realization is accomplished by the present invention.
  • a reciprocating switching mechanism 1 for an on-load tap changer disclosed in the present invention, including a connecting assembly 10 and at least one switching assembly;
  • the switching assembly includes two switching units 20, two switching units 20 They are arranged on opposite sides of the connecting assembly 10 respectively, and the two switching units 20 are connected with the connecting assembly 10 through the first connecting rod 30 and the second connecting rod 40, and the distance between the first connecting rod 30 and the second connecting rod 40 is preset Distance, the first connecting rod 30 can slide relative to the connecting assembly 10; through the first connecting rod 30 can slide relative to the connecting assembly 10, thus, it is convenient to change the position of the first connecting rod 30 on the connecting assembly 10.
  • the two switching units 20 are respectively arranged at the top end and the bottom end of the connection assembly 10, the first connection rod 30 and the second connection rod 40 are both passed through the connection assembly 10, and the first connection rod 30 and the second connection The two ends of the rod 40 are respectively inserted in the two switching units 20, so that the two switching units 20 and the connecting assembly 10 are connected through the first connecting rod 30 and the second connecting rod 40; wherein, the central axis of the first connecting rod 30 parallel to the central axis of the second connecting rod 40 .
  • the switching unit 20 includes a moving contact assembly 201 and two static contacts 202, the two static contacts 202 are respectively located on opposite sides of the moving contact assembly 201, and the moving contact assembly 201 is used to communicate with the static contact 202, the moving contact assembly 201 can slide relative to the static contact 202; during use, when the moving contact assembly 201 is clamped with one of the static contacts 202, the moving contact assembly 201 and the other static contact 202 is separated; the movable contact 201 slides on the static contact 202 , thereby facilitating the switching connection of the movable contact assembly 201 between the two static contacts 202 .
  • One ends of the two static contacts 202 are connected to the external support, the moving contact assembly 201 is connected to the connecting assembly 10 through the first connecting rod 30 and the second connecting rod 40, and the moving contact assembly 201 can wrap around the second connecting rod
  • the central axis of 40 rotates; the movable contact assembly 201 rotates with the central axis of the second connecting rod 40 as the rotation axis, thereby facilitating the change of the connection relationship between the movable contact assembly 201 and the two static contacts 202 .
  • connection assembly 10 includes a fixed disc 101 and a rotating disc 102
  • the fixed disc 101 is provided with a rotating hole
  • the rotating hole penetrates the fixed disc 101 along the central axis of the fixed disc 101
  • the rotating disc 102 is inserted in the rotating hole, and the rotating disc 102 can rotate relative to the fixed disc 101; by rotating the rotating disc 102, the first connecting rod 30 is slid relative to the rotating disc 102, thereby facilitating the first The position of the connecting rod 30 on the rotating disc 102 changes.
  • the central axis of the rotating disc 102 is parallel to the central axis of the fixed disc 101 , and in some practicable manners, the central axis of the rotating disc 102 and the central axis of the fixed disc 101 are collinearly arranged.
  • the two switching units 20 are connected to the rotating disc 102 through the first connecting rod 30
  • the two switching units 20 are connected to the fixed disc 101 through the second connecting rod 40 .
  • At least one slideway 1021 is provided on the rotating disk 102, and the slideway 1021 extends along the circumference of the rotating disk 102, and the first connecting rod 30 can move along the slideway 1021 sliding; by providing a slideway 1021 on the rotating disk 102 , the first connecting rod 30 slides along the slideway 1021 , thus, the slideway 1021 guides the first connecting rod 30 .
  • the slideway 1021 is provided corresponding to the switching assembly, and the number of the slideway 1021 matches the number of the switching assembly.
  • the slideway 1021 is arc-shaped, and the central angle of the slideway 1021 ranges from 80° to 100°. In this embodiment, the central angle of the slideway 1021 is 92°.
  • the two ends of the slideway 1021 are set as the A end and the B end, the first connecting rod 30 is penetrated in the slideway 1021, and the two ends of the first connecting rod 30 are respectively inserted in the two opposite moving contacts.
  • the contact assembly 201 is fixed; then continue to rotate the rotating disk 102 counterclockwise, at this time, the movable contact assembly 201 rotates clockwise around the central axis of the second connecting rod 40, the movable contact assembly 201 and the upper
  • the static contact 202 is separated and connected with the lower static contact 202.
  • the moving contact assembly 201 includes a rotating plate 2011 and two clamping assemblies
  • the rotating plate 2011 is connected to the connecting assembly 10 through the first connecting rod 30 and the second connecting rod 40, and the rotating plate 2011 can rotate around Rotating along the central axis of the second connecting rod 40
  • the two clamping assemblies are oppositely arranged on one end of the rotating plate 2011 facing the static contact 202
  • the clamping assemblies are arranged in one-to-one correspondence with the static contact 202;
  • the central axis of the two connecting rods 40 rotates, and then drives the two clamping assemblies to rotate. After rotating to a certain angle, one of the clamping assemblies clamps the corresponding static contact 202, and the other clamping assembly and its corresponding The static contacts 202 are separated.
  • a first through hole and a second through hole are opened on the rotating plate 2011, the central axis of the first through hole and the central axis of the second through hole are parallel to the central axis of the fixed disc 101, and the first connecting rod 30 passes through It is arranged in the slideway 1021 , and the two ends of the first connecting rod 30 are respectively inserted in the first through holes of the two opposite rotating plates 2011 .
  • the fixing disc 101 is provided with a fixing hole, and the fixing hole is set corresponding to the second through hole, the second connecting rod 40 is penetrated in the fixing hole, and the two ends of the second connecting rod 40 are inserted respectively In the second through holes of the two rotating plates 2011 oppositely arranged.
  • the switching assembly further includes a sliding assembly 50 , the sliding assembly 50 is located on the side of the second connecting rod 40 away from the first connecting rod 30 , and the sliding assembly 50 is passed through the connecting assembly 10 , and the two ends of the sliding assembly 50 are respectively inserted on the two switching units 20, the sliding assembly 50 can slide relative to the connecting assembly 10, and the sliding assembly 50 can also slide relative to the switching unit 20; through the rotating plate 2011 around the second connecting rod The central axis of 40 rotates, thereby driving the sliding assembly 50 to slide relative to the connecting assembly 10 , and meanwhile the sliding assembly 50 also slides relative to the switching unit 20 .
  • the sliding assembly 50 includes a sliding bar 501 and two opposite sliding blocks 502, the sliding blocks 502 are provided in one-to-one correspondence with the switching unit 20, the sliding bar 501 is passed through the connecting assembly 10, and the two ends of the sliding bar 501 Inserted in the two sliders 502 respectively, the sliding rod 501 can slide relative to the connecting assembly 10; the rotating plate 2011 is provided with a sliding groove 20111, and the sliding groove 20111 runs through the rotating plate 2011 along the central axis direction of the first connecting rod 30, The sliding block 502 is inserted in the sliding slot 20111 , and the sliding block 502 can slide along the sliding slot 20111 ;
  • the fixed disc 101 is provided with a sliding port 1011, the sliding port 1011 penetrates the fixed disc 101 along the central axis of the fixed disc 101, the sliding rod 501 is passed through the sliding port 1011, and the two ends of the sliding rod 501 Inserted in the two sliders 502 respectively, the rotating plate 2011 rotates around the central axis of the second connecting rod 40.
  • the slider 501 drives the slider 502 to slide along the sliding port 1011, and at the same time, the slider 502 drives the slider The rod 501 slides along the sliding groove 20111 .
  • the central axis of the sliding rod 501 is parallel to the central axis of the fixed disk 101
  • the second connecting rod 40 is located between the first connecting rod 30 and the sliding assembly 50 .
  • the sliding slot 20111 is located between the two clamping components, and the extending direction of the clamping components is inclined relative to the extending direction of the sliding slot 20111 .
  • the movable contact assembly 201 also includes an elastic member 2013, and a mounting hole is opened on the side of the chute 20111 facing away from the slider 502, and one end of the elastic member 2013 passes through the mounting hole and the second The outer side wall of connecting rod 40 is connected, and the other end of elastic member 2013 is connected with slide block 502;
  • the restoring force of the elastic member 2013 acts on the slider 502, thereby improving the stability of the connection between the clamping assembly and the static contact 202, thereby ensuring that the connection between the static contact 202 and the moving contact assembly 201
  • the current passes stably; at the same time, the rotation speed of the rotating plate 2011 around the central axis of the second connecting rod 40 is further increased by providing the elastic member 2013 .
  • the elastic member 2013 has the largest restoring force, and the restoring force pushes the rotating plate 2011 toward one of the static contacts. 202 direction turns.
  • the clamping assembly clamps the static contact 202, at this time, the restoring force of the elastic member 2013 is the smallest.
  • the central axis of the mounting hole is perpendicular to the central axis of the second through hole, and the mounting hole communicates with the second through hole. connect.
  • the elastic member 2013 may be a coil spring 27, of course, the elastic member 2013 may also be a sleeve with elasticity.
  • the elastic member 2013 is partly housed in the chute 20111, one end of the elastic member 2013 is connected to the outer wall of the slider 502, and the end of the elastic member 2013 away from the slider 502 passes through
  • the mounting hole is connected to the peripheral wall of the second connecting rod 40, the elastic member 2013 is in a compressed state, and when the central axis of the elastic member 2013 is perpendicular to the extending direction of the sliding port 1011, the compression amount of the elastic member 2013 is the largest, and then the rotating plate 2011 rotates around Rotating along the central axis of the second connecting rod 40 , and then driving the sliding assembly 50 to move, at this time, the compression amount of the elastic member 2013 gradually decreases.
  • the clamping assembly includes two clamping plates 2012 arranged oppositely, and the two clamping plates 2012 are respectively arranged on the top and bottom ends of the rotating plate 2011, and the clamping plate 2012 can rotate relative to the rotating plate 2011, There is a preset distance between the two clamping plates 2012 ; by setting the preset distance between the two clamping plates 2012 , it is convenient to connect the clamping assembly with the static contact 202 .
  • the rotating plate 2011 is provided with a receiving groove, the first end of the splint 2012 is inserted in the receiving groove, the first end of the splint 2012 is connected with the rotating plate 2011 through the rotating shaft 20122, and the central axis of the rotating shaft 20122 is arranged parallel to the splint 2012,
  • the splint 2012 can rotate around the central axis of the rotating shaft 20122, the second end of the splint 2012 extends out of the receiving groove, the second ends of the two splints 2012 together form a clamping channel, and one end of the static contact 202 is inserted into the clamping channel , the outer wall of the static contact 202 abuts against the inner wall of the clamping channel, and the static contact 202 can slide along the clamping channel; on the one hand, the outer wall of the static contact 202 abuts against the inner wall of the clamping channel,
  • the clamping plate 2012 rotates around the rotating shaft 20122, thereby changing the
  • the splint 2012 is provided with an arc-shaped elastic piece 20121
  • the top of the splint 2012 is provided with a groove
  • the arc-shaped elastic piece 20121 is arranged in the groove
  • the arc-shaped elastic piece 20121 is detachably connected with the splint 2012
  • the arc-shaped The shrapnel 20121 is used to reset the splint 2012; on the one hand, by setting the arc-shaped shrapnel 20121 in the groove, the groove acts as a limiter for the arc-shaped shrapnel 20121;
  • the elastic piece 20121 improves the stability and fitting degree of the connection between the clamping assembly and the static contact 202 .
  • the arc-shaped elastic piece 20121 protrudes toward the side away from the splint 2012 , so that the arc-shaped elastic piece 20121 can provide restoring force to the splint 2012 , thereby improving the fit between the clamping assembly and the static contact 202 .
  • the static contact 202 includes a fixed portion 2021 , a first connecting portion 2022 and a second connecting portion 2023 , and the first connecting portion 2022 and the second connecting portion 2023 are respectively arranged on opposite sides of the fixing portion 2021 .
  • the first connecting part 2022 is used to connect with the moving contact assembly 201; the thickness of the first connecting part 2022 gradually increases along the length direction of the fixed part 2021; thus, it is convenient for the first connecting part 2022 to connect with the moving contact assembly. 201 connection.
  • the first connecting portion 2022 is U-shaped, that is, the first connecting portion 2022 adopts rounded corners, and the thickness of the first connecting portion 2022 gradually increases along the length direction of the fixing portion 2021 .
  • the thickness of the first connecting part 2022 slides into the clamping channel sequentially from thin to thick, thereby facilitating the insertion of the first connecting part 2022 into the clamping channel; Stability of component connections.
  • Figures 6 to 8 show the mechanical principles of the reciprocating switching mechanism.
  • the principle component 2 corresponds to the components in the reciprocating switching mechanism 1.
  • the turntable 21 is equivalent to the rotation circle in the reciprocating switching mechanism 1.
  • the disk 102, the arc-shaped groove 211 is equivalent to the slideway 1021 opened on the rotating disk 102, the swing rod 22 is equivalent to the moving contact assembly 201, the first vertical rod 24 is equivalent to the first connecting rod 30, and the second vertical rod 25 is equivalent to the second connecting rod 40, the third vertical rod 26 is equivalent to the sliding assembly 50, the spring 27 is equivalent to the elastic member 2013, the fixed plate 23 is equivalent to the fixed disc 101, the first slide rail 231 is equivalent to the sliding port 1011, the second The second slide rail 221 is equivalent to the slide groove 20111 , and the fixed block 28 is equivalent to the static contact 202 .
  • Two ends of the arc-shaped groove 211 are set as end a and end b respectively, end a corresponds to end A, and end b corresponds to end B.
  • the counterclockwise rotation of the turntable 21 drives the swing rod 22 to rotate clockwise until the swing rod 22 contacts the fixed block 28 to complete the switching action.
  • the reciprocating switching mechanism 1 of the on-load tap changer provided in this embodiment includes a connecting assembly 10 and at least one switching assembly; On the side, the two switching units 20 are connected to the connecting assembly 10 through the first connecting rod 30 and the second connecting rod 40, the first connecting rod 30 and the second connecting rod 40 are separated by a preset distance, and the first connecting rod 30 can be opposite to each other.
  • the connecting assembly 10 slides;
  • the switching unit 20 includes a moving contact assembly 201 and two static contacts 202, the two static contacts 202 are respectively located on opposite sides of the moving contact assembly 201, and the moving contact assembly 201 is used to communicate with the static contact 202, the moving contact assembly 201 can slide relative to the static contact 202; one end of the two static contacts 202 is connected to the external support, and the moving contact assembly 201 is connected to the first connecting rod 30 and the second connecting rod 40.
  • the connecting assembly 10 is connected, and the moving contact assembly 201 can rotate around the central axis of the second connecting rod 40 ; this arrangement improves the stability of the installation; at the same time, it improves the insulation strength between the poles.
  • the reciprocating switching mechanism 1 of the on-load tap changer provided by the present invention has the following advantages: the device has a simple structure, is easy to manufacture, and is convenient to operate.

Abstract

本发明涉及一种有载分接开关的往复式切换机构，包括连接组件以及至少一个切换组件；切换组件包括两个切换单元，两个切换单元分别设置在连接组件相对的两侧，两个切换单元与连接组件通过第一连接杆和第二连接杆连接，第一连接杆和第二连接杆之间间隔预设距离，第一连接杆能够相对连接组件滑动；切换单元包括动触头组件以及两个静触头，两个静触头分别位于动触头组件相对的两侧，动触头组件用于与静触头连接，动触头组件能够相对静触头滑动；两个静触头的一端均与外部支撑件连接，动触头组件通过第一连接杆和第二连接杆与连接组件连接，动触头组件能够绕着第二连接杆的中轴线转动。

Description

一种有载分接开关的往复式切换机构
相关申请的交叉引用
本申请基于申请号为202110850706.7、申请日为2021年07月27日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明涉及变压器有载分接开关技术领域，尤其是涉及一种有载分接开关的往复式切换机构。
背景技术
有载分接开关是在变压器带负载的情况下，用以切换一次或二次绕组的分接，以调节其输出电压的一种专用开关。
目前，常使用组合式真空有载分接开关用于变压器带负载调压，组合式真空有载分接开关通常由驱动机构、选择器及切换开关三大部件组成；其中，驱动机构包括电动机、手摇操作机构、制动器、计数器、位置指示器、控制小开关及一套复杂的传动齿轮，驱动机构用于操作开关；切换开关由快速机构、主通断触头和往复式机械触头、以及过渡电阻构成。组合式真空有载分接开关在使用过程中，首先由选择器对挡位进行预选，随后由切换开关完成对挡位的切换，其中，快速机构与电动机相连接，驱动各个触头完成切换。
发明内容
针对现有技术存在的不足，本发明的目的是提供一种有载分接开关的 往复式切换机构。
本发明的上述发明目的是通过以下技术方案得以实现的：一种有载分接开关的往复式切换机构，包括连接组件以及至少一个切换组件；所述切换组件包括两个切换单元，两个所述切换单元分别设置在所述连接组件相对的两侧，两个所述切换单元与所述连接组件通过第一连接杆和第二连接杆连接，所述第一连接杆和所述第二连接杆之间间隔预设距离，所述第一连接杆能够相对所述连接组件滑动；所述切换单元包括动触头组件以及两个静触头，两个所述静触头分别位于所述动触头组件相对的两侧，所述动触头组件用于与所述静触头连接，所述动触头组件能够相对所述静触头滑动；两个所述静触头的一端均与外部支撑件连接，所述动触头组件通过所述第一连接杆和所述第二连接杆与所述连接组件连接，所述动触头组件能够绕着所述第二连接杆的中轴线转动。
优选地，本发明提供的有载分接开关的往复式切换机构，所述连接组件包括固定圆盘以及转动圆盘，所述固定圆盘上开设有转动孔，所述转动孔沿着所述固定圆盘的中轴线方向贯通所述固定圆盘，所述固定圆盘上开设有固定孔，所述第二连接杆穿设在所述固定孔内，所述转动圆盘上开设有至少一个滑道，所述滑道沿着所述转动圆盘的周向延伸，所述第一连接杆能够沿着所述滑道滑动，所述转动圆盘插设在所述转动孔内，所述转动圆盘能够相对所述固定圆盘转动。
优选地，本发明提供的有载分接开关的往复式切换机构，所述动触头组件包括转动板以及两个夹紧组件，所述转动板通过所述第一连接杆和所述第二连接杆与所述连接组件连接，所述转动板能够绕着所述第二连接杆的中轴线转动，两个所述夹紧组件相对设置在所述转动板上，所述夹紧组件与所述静触头一一对应设置，所述夹紧组件用于所述静触头的夹紧。
优选地，本发明提供的有载分接开关的往复式切换机构，所述切换组 件还包括滑动组件，所述滑动组件位于所述第二连接杆背离所述第一连接杆的一侧，所述滑动组件穿设在所述连接组件上，且所述滑动组件的两端分别插设在两个所述切换单元上，所述滑动组件与所述切换单元可滑动连接；所述滑动组件能够相对所述连接组件滑动。
优选地，本发明提供的有载分接开关的往复式切换机构，所述滑动组件包括滑杆以及相对设置的两个滑块，所述滑块与所述切换单元一一对应设置，所述滑杆穿设在所述连接组件上，且所述滑杆的两端分别插设在两个所述滑块内，所述滑杆能够相对所述连接组件滑动；所述转动板上开设有滑槽，所述滑槽沿着所述第一连接杆的中轴线方向贯通所述转动板，所述滑块插设在所述滑槽内，所述滑块能够沿着所述滑槽滑动。
优选地，本发明提供的有载分接开关的往复式切换机构，所述动触头组件还包括弹性件，所述滑槽背离所述滑块的一侧开设有安装孔，所述弹性件的一端通过安装孔与所述第二连接杆的外周壁连接，所述弹性件的另一端与所述滑块连接；所述弹性件处于压缩状态，所述弹性件的恢复力用于推动所述转动板转动。
优选地，本发明提供的有载分接开关的往复式切换机构，所述夹紧组件包括相对设置的两个夹板，两个所述夹板分别设置在所述转动板的顶端和底端，所述夹板能够相对所述转动板转动，两个所述夹板之间间隔预设距离，用于所述夹紧组件与所述静触头连接。
优选地，本发明提供的有载分接开关的往复式切换机构，所述夹板上设置有弧形弹片，所述夹板的顶端开设有凹槽，所述弧形弹片设置在所述凹槽内，所述弧形弹片与所述夹板可拆卸连接，所述弧形弹片用于对所述夹板起复位作用。
优选地，本发明提供的有载分接开关的往复式切换机构，所述静触头包括固定部、第一连接部以及第二连接部，所述第一连接部与所述第二连 接部分别设置在所述固定部相对的两侧，所述第一连接部用于与所述动触头组件连接；所述第一连接部沿着所述固定部的远离所述动触头组件的长度方向厚度逐渐增大。
综上所述，本发明的有益技术效果为：本申请提供的有载分接开关的往复式切换机构，包括连接组件以及至少一个切换组件；切换组件包括两个切换单元，两个切换单元分别设置在连接组件相对的两侧，两个切换单元与连接组件通过第一连接杆和第二连接杆连接，第一连接杆和第二连接杆之间间隔预设距离，第一连接杆能够相对连接组件滑动；切换单元包括动触头组件以及两个静触头，两个静触头分别位于动触头组件相对的两侧，动触头组件用于与静触头连接，动触头组件能够相对静触头滑动；两个静触头的一端均与外部支撑件连接，动触头组件通过第一连接杆和第二连接杆与连接组件连接，动触头组件能够绕着第二连接杆的中轴线转动。
附图说明
图1是本发明实施例提供的有载分接开关的原理示意图。
图2是本发明实施例提供的有载分接开关的往复式切换机构的三相的整体结构示意图。
图3是本发明实施例提供的有载分接开关的往复式切换机构的单相的整体结构示意图一。
图4是本发明实施例提供的有载分接开关的往复式切换机构的单相的整体结构示意图二。
图5是本发明实施例提供的有载分接开关的往复式切换机构中静触头的结构示意图。
图6是本发明实施例提供的有载分接开关的往复式切换机构的机械原理图一。
图7是本发明实施例提供的有载分接开关的往复式切换机构的机械原 理图二。
图8是本发明实施例提供的有载分接开关的往复式切换机构的机械原理图三。
图9是本发明实施例提供的有载分接开关的往复式切换机构的时序图一(奇数档切换至偶数档)。
图10是本发明实施例提供的有载分接开关的往复式切换机构的时序图二(偶数档切换至奇数档)。
图11为是本发明实施例提供的有载分接开关的往复式切换机构时序图对应的电路图。
图中，1、往复式切换机构；10、连接组件；101、固定圆盘；1011、滑动口；102、转动圆盘；1021、滑道；20、切换单元；201、动触头组件；2011、转动板；20111、滑槽；2012、夹板；20121、弧形弹片；20122、转轴；2013、弹性件；202、静触头；2021、固定部；2022、第一连接部；2023、第二连接部；30、第一连接杆；40、第二连接杆；50、滑动组件；501、滑杆；502、滑块；2、原理组件；21、转盘；211、圆弧状凹槽；22、摆杆；221、第二滑轨；23、固定板；231、第一滑轨；24、第一立杆；25、第二立杆；26、第三立杆；27、弹簧；28、固定块。
具体实施方式
以下结合附图对本发明作进一步详细说明。
参照图1，有载分接开关用于变压器带负载调压，其通过改变接入电网绕组的匝数比，进而实现调节变压器输出电压的目的。
参照图9，本实施例中，有载分接开关实现从奇数分接到偶数分接的切换共需要110s，经历10个切换状态，每个切换状态的转变对应有载分接开关内部一个触头的动作，如图9、图11，奇数分接到偶数分接的动作顺序分别为：MC1开断，V2、V3闭合，V1开断，Z1接通b端，V1闭合，V2、 V3开断，Z2接通d端，MC2闭合。
参照图10，本实施例中，有载分接开关实现从偶数分接到奇数分接的切换共需要110s，经历10个切换状态，每个切换状态的转变对应有载分接开关内部一个触头的动作，如图10、图11，偶数分接到奇数分接的动作顺序分别为：MC2开断，V2、V3闭合，V1开断，Z1接通a端，V1闭合，V2、V3开断，Z2接通c端，MC1闭合。
其中Z2为往复式切换机构，其实现方式由本发明完成。
参照图2至图4，为本发明公开的一种有载分接开关的往复式切换机构1，包括连接组件10以及至少一个切换组件；切换组件包括两个切换单元20，两个切换单元20分别设置在连接组件10相对的两侧，两个切换单元20与连接组件10通过第一连接杆30和第二连接杆40连接，第一连接杆30和第二连接杆40之间间隔预设距离，第一连接杆30能够相对连接组件10滑动；通过第一连接杆30能够相对连接组件10滑动，由此，便于对第一连接杆30在连接组件10上的位置进行改变。
具体的，两个切换单元20分别设置在连接组件10的顶端和底端，第一连接杆30与第二连接杆40均穿设在连接组件10上，且第一连接杆30和第二连接杆40的两端分别插设在两个切换单元20内，使得两个切换单元20与连接组件10通过第一连接杆30和第二连接杆40连接；其中，第一连接杆30的中轴线与第二连接杆40的中轴线平行。
本实施例中，切换单元20包括动触头组件201以及两个静触头202，两个静触头202分别位于动触头组件201相对的两侧，动触头组件201用于与静触头202连接，动触头组件201能够相对静触头202滑动；在使用过程中，动触头组件201与其中一个静触头202夹紧连接时，动触头组件201与另一个静触头202分离；通过动触头201在静触头202上滑动，由此，便于动触头组件201在两个静触头202之间进行切换连接。两个静触头202 的一端均与外部支撑件连接，动触头组件201通过第一连接杆30和第二连接杆40与连接组件10连接，动触头组件201能够绕着第二连接杆40的中轴线转动；通过动触头组件201以第二连接杆40的中轴线为转轴转动，由此，便于对动触头组件201与两个静触头202的连接关系进行改变。
需要说明的是，以图3所示方位为例，在动触头组件201绕着第二连接杆40的中轴线逆时针转动到一定角度时，动触头组件201与上部的静触头202连接，与下部的静触头202分离；在动触头组件201绕着第二连接杆40的中轴线顺时针转动到一定角度时，动触头组件201与下部的静触头202连接，与上部的静触头202分离，由此，实现往复式切换机构1的往复运动。
进一步地，本实施例中，连接组件10包括固定圆盘101以及转动圆盘102，固定圆盘101上开设有转动孔，转动孔沿着固定圆盘101的中轴线方向贯通固定圆盘101，转动圆盘102插设在转动孔内，转动圆盘102能够相对固定圆盘101转动；通过转动圆盘102转动，使得第一连接杆30相对转动圆盘102滑动，由此，便于对第一连接杆30在转动圆盘102上的位置进行改变。
具体的，转动圆盘102的中轴线与固定圆盘101的中轴线平行，在一些可实现的方式中，转动圆盘102的中轴线与固定圆盘101的中轴线共线设置。其中，两个切换单元20与转动圆盘102通过第一连接杆30连接，两个切换单元20与固定圆盘101通过第二连接杆40连接。
继续参照图2至图4，本实施例中，转动圆盘102上开设有至少一个滑道1021，滑道1021沿着转动圆盘102的周向延伸，第一连接杆30能够沿着滑道1021滑动；通过在转动圆盘102上开设滑道1021，第一连接杆30沿着滑道1021滑动，由此，滑道1021对第一连接杆30起导向作用。
其中，滑道1021与切换组件对应设置，滑道1021的个数与切换组件 的个数相匹配。
具体的，滑道1021呈圆弧状，滑道1021的圆心角范围为80°～100°，在本实施例中，滑道1021的圆心角为92°。其中，滑道1021的两端设为A端和B端，第一连接杆30穿设在滑道1021内，且第一连接杆30的两端分别插设在相对设置的两个动触头组件201上。
以图3所示动触头组件到位状态和方位为例，在使用过程中，在第一连接杆30滑动至滑道1021的A端时，动触头组件201转动到与下部的静触头202连接，在第一连接杆30滑动至滑道1021的B端时，动触头组件201转动到与上部的静触头202连接。也就是说，以图3所示状态为初始状态，通过对转动圆盘102进行逆时针转动，此时，第一连接杆30由滑道1021的B端滑动到A端，在此期间，动触头组件201固定不动；而后继续对转动圆盘102进行逆时针转动，此时，动触头组件201绕着第二连接杆40的中轴线做顺时针转动，动触头组件201与上部的静触头202分离，与下部的静触头202连接。
进一步地，本实施例中，动触头组件201包括转动板2011以及两个夹紧组件，转动板2011通过第一连接杆30和第二连接杆40与连接组件10连接，转动板2011能够绕着第二连接杆40的中轴线转动，两个夹紧组件相对设置在转动板2011朝向静触头202的一端，夹紧组件与静触头202一一对应设置；通过转动板2011绕着第二连接杆40的中轴线转动，进而带动两个夹紧组件转动，在转动到一定角度后，其中一个夹紧组件夹紧与之对应的静触头202，另一个夹紧组件和与其对应的静触头202分离。
其中，转动板2011上开设有第一通孔和第二通孔，第一通孔的中轴线与第二通孔的中轴线均与固定圆盘101的中轴线平行，第一连接杆30穿设在滑道1021内，且第一连接杆30的两端分别插设在相对设置的两个转动板2011的第一通孔内。
在上述实施例中，固定圆盘101上开设有固定孔，固定孔与第二通孔对应设置，第二连接杆40穿设在固定孔内，且第二连接杆40的两端分别插设在相对设置的两个转动板2011的第二通孔内。
以图3所示方位为例，在使用过程中，在第一连接杆30位于滑道1021的A端时，下部的夹紧组件夹紧下部的静触头202，此时，转动圆盘102进行顺时针转动，第一连接杆30沿着滑道1021滑动，第一连接杆30滑动到滑道1021的B端时，第一连接杆30的外周壁抵顶在滑道1021的B端的内侧壁上，在此期间，动触头组件201固定不动；而后，继续对转动圆盘102进行顺时针转动，第一连接杆30与转动板2011均绕着第二连接杆40的中轴线进行逆时针转动，上部的静触头202的一端滑入上部的夹紧组件内，其转动圆盘102旋转的角度范围为100°～120°时停止转动，上部的夹紧组件与上部的静触头202连接；在本实施例中，转动圆盘102的旋转角度为110°时，上部的夹紧组件与上部的静触头202连接。
继续参照图2至图4，本实施例中，切换组件还包括滑动组件50，滑动组件50位于第二连接杆40背离第一连接杆30的一侧，滑动组件50穿设在连接组件10上，且滑动组件50的两端分别插设在两个切换单元20上，滑动组件50能够相对连接组件10滑动，滑动组件50也能够相对切换单元20滑动；通过转动板2011绕着第二连接杆40的中轴线转动，进而驱动滑动组件50相对连接组件10滑动，同时滑动组件50也相对切换单元20滑动。
进一步地，滑动组件50包括滑杆501以及相对设置的两个滑块502，滑块502与切换单元20一一对应设置，滑杆501穿设在连接组件10上，且滑杆501的两端分别插设在两个滑块502内，滑杆501能够相对连接组件10滑动；转动板2011上开设有滑槽20111，滑槽20111沿着第一连接杆30的中轴线方向贯通转动板2011，滑块502插设在滑槽20111内，滑块502 能够沿着滑槽20111滑动；通过在转动板2011上开设滑槽20111，滑槽20111对滑块502起导向作用。
具体的，固定圆盘101上开设有滑动口1011，滑动口1011沿着固定圆盘101的中轴线方向贯通固定圆盘101，滑杆501穿设在滑动口1011内，滑杆501的两端分别插设在两个滑块502内，转动板2011绕着第二连接杆40的中轴线转动，此时，滑杆501带动滑块502沿着滑动口1011滑动，同时，滑块502带动滑杆501沿着滑槽20111滑动。
其中，滑杆501的中轴线与固定圆盘101的中轴线平行，第二连接杆40位于第一连接杆30与滑动组件50之间。
为便于夹紧组件与静触头202连接，滑槽20111位于两个夹紧组件之间，且夹紧组件的延伸方向相对于滑槽20111的延伸方向倾斜设置。
继续参照图2至图4，本实施例中，动触头组件201还包括弹性件2013，滑槽20111背离滑块502的一侧开设有安装孔，弹性件2013的一端通过安装孔与第二连接杆40的外侧壁连接，弹性件2013的另一端与滑块502连接；弹性件2013处于压缩状态，弹性件2013的恢复力用于推动转动板2011转动；通过设置弹性件2013，弹性件2013处于压缩状态，弹性件2013的恢复力作用在滑块502上，由此，提高了夹紧组件与静触头202连接的稳定性，进而确保在静触头202和动触头组件201之间电流稳定通过；同时，通过设置弹性件2013，进一步提高了转动板2011绕着第二连接杆40的中轴线旋转的速度。
在使用过程中，弹性件2013在转动板2011转动到同一垂直高度的两个静触头202中间时，此时，弹性件2013恢复力最大，该恢复力推动转动板2011向其中一个静触头202方向转动。在夹紧组件夹紧静触头202时，此时，弹性件2013的恢复力最小。
具体的，安装孔的中轴线与第二通孔的中轴线垂直设置，且安装孔与 第二通孔连通，弹性件2013背离滑块502的一端通过安装孔与第二连接杆40的外周壁连接。
示例性的，弹性件2013可以为螺旋弹簧27，当然，弹性件2013也可以为带有弹性的套筒。在弹性件2013为螺旋弹簧27的可实现方式中，弹性件2013部分容置在滑槽20111内，弹性件2013的一端与滑块502的外侧壁连接，弹性件2013背离滑块502的一端通过安装孔与第二连接杆40的外周壁连接，弹性件2013处于压缩状态，在弹性件2013的中轴线与滑动口1011的延伸方向垂直时，弹性件2013的压缩量最大，随后转动板2011绕着第二连接杆40的中轴线转动，进而带动滑动组件50运动，此时，弹性件2013的压缩量逐渐减小。
继续参照图2至图4，本实施例中，夹紧组件包括相对设置的两个夹板2012，两个夹板2012分别设置在转动板2011的顶端和底端，夹板2012能够相对转动板2011转动，两个夹板2012之间间隔预设距离；通过在两个夹板2012之间设置预设距离，由此，便于夹紧组件与静触头202连接。
其中，转动板2011上开设有容纳槽，夹板2012的第一端插设在容纳槽内，夹板2012的第一端与转动板2011通过转轴20122连接，转轴20122的中轴线与夹板2012平行设置，夹板2012能够绕着转轴20122的中轴线转动，夹板2012的第二端伸出容纳槽，两个夹板2012的第二端共同构成夹紧通道，静触头202的一端插设在夹紧通道内，静触头202的外侧壁与夹紧通道的内侧壁抵接，静触头202能够沿着夹紧通道滑动；一方面，静触头202的外侧壁与夹紧通道的内侧壁抵接，由此，提高了电流通过的稳定性；另一方面，通过夹板2012绕着转轴20122转动，进而改变夹紧通道的空间大小，使得不同厚度的静触头202能够插设在夹紧通道内，由此，提高了夹紧组件的适应性。
进一步地，本实施例中，夹板2012上设置有弧形弹片20121，夹板2012 的顶端开设有凹槽，弧形弹片20121设置在凹槽内，弧形弹片20121与夹板2012可拆卸连接，弧形弹片20121用于对夹板2012起复位作用；一方面，通过将弧形弹片20121设置在凹槽内，凹槽对弧形弹片20121起限位作用；另一方面，通过在夹板2012上设置弧形弹片20121，提高了夹紧组件与静触头202连接的稳定性和贴合度。
其中，弧形弹片20121朝向背离夹板2012的一侧凸起，便于弧形弹片20121对夹板2012提供恢复力，由此，提高了夹紧组件与静触头202的贴合度。
继续参照图5，本实施例中，静触头202包括固定部2021、第一连接部2022以及第二连接部2023，第一连接部2022与第二连接部2023分别设置在固定部2021相对的两侧，第一连接部2022用于与动触头组件201连接；第一连接部2022沿着固定部2021的长度方向厚度逐渐增大；由此，便于第一连接部2022与动触头组件201连接。
其中，第一连接部2022呈U型，也就是说，第一连接部2022采用圆角设置，第一连接部2022沿着固定部2021的长度方向厚度逐渐增大。在使用过程中，第一连接部2022的厚度由薄到厚依次滑入夹紧通道内，由此，便于第一连接部2022插入夹紧通道；同时，提高了第一连接部2022与夹紧组件连接的稳定性。
图6至图8为往复式切换机构的机械原理，原理组件2与往复式切换机构1中的构件一一对应，参照图6至图8，转盘21相当于往复式切换机构1中的转动圆盘102，圆弧状凹槽211相当于转动圆盘102上开设的滑道1021，摆杆22相当于动触头组件201，第一立杆24相当于第一连接杆30，第二立杆25相当于第二连接杆40，第三立杆26相当于滑动组件50，弹簧27相当于弹性件2013，固定板23相当于固定圆盘101，第一滑轨231相当于滑动口1011，第二滑轨221相当于滑槽20111，固定块28相当于静触头 202。圆弧状凹槽211的两端分别设为a端和b端，a端相当于A端，b端相当于B端。转盘21逆时针转动带动摆杆22顺时针转动直到摆杆22与固定块28接触完成切换动作。
本实施例提供的有载分接开关的往复式切换机构1，包括连接组件10以及至少一个切换组件；切换组件包括两个切换单元20，两个切换单元20分别设置在连接组件10相对的两侧，两个切换单元20与连接组件10通过第一连接杆30和第二连接杆40连接，第一连接杆30和第二连接杆40之间间隔预设距离，第一连接杆30能够相对连接组件10滑动；切换单元20包括动触头组件201以及两个静触头202，两个静触头202分别位于动触头组件201相对的两侧，动触头组件201用于与静触头202连接，动触头组件201能够相对静触头202滑动；两个静触头202的一端均与外部支撑件连接，动触头组件201通过第一连接杆30和第二连接杆40与连接组件10连接，动触头组件201能够绕着第二连接杆40的中轴线转动；如此设置，提高了安装的稳定性；同时，提高了极间的绝缘强度。
本发明提供的有载分接开关的往复式切换机构1，具有如下优点：该装置结构简单、制作容易，便于操作。
应当说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
最后应说明的是：显然，上述实施例仅仅是为清楚地说明本发明所作的举例，而并非对实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引申出的显而易见的变化或变动仍处于本发明的保护范围之中。

Claims (9)

  1. 一种有载分接开关的往复式切换机构，包括连接组件(10)以及至少一个切换组件；
    所述切换组件包括两个切换单元(20)，两个所述切换单元(20)分别设置在所述连接组件(10)相对的两侧，两个所述切换单元(20)与所述连接组件(10)通过第一连接杆(30)和第二连接杆(40)连接，所述第一连接杆(30)和所述第二连接杆(40)之间间隔预设距离，所述第一连接杆(30)能够相对所述连接组件(10)滑动；
    所述切换单元(20)包括动触头组件(201)以及两个静触头(202)，两个所述静触头(202)分别位于所述动触头组件(201)相对的两侧，所述动触头组件(201)用于与所述静触头(202)连接，所述动触头组件(201)能够相对所述静触头(202)滑动；
    两个所述静触头(202)的一端均与外部支撑件连接，所述动触头组件(201)通过所述第一连接杆(30)和所述第二连接杆(40)与所述连接组件(10)连接，所述动触头组件(201)能够绕着所述第二连接杆(40)的中轴线转动。
  2. 根据权利要求1所述的有载分接开关的往复式切换机构，所述连接组件(10)包括固定圆盘(101)以及转动圆盘(102)，所述固定圆盘(101)上开设有转动孔，所述转动孔沿着所述固定圆盘(101)的中轴线方向贯通所述固定圆盘(101)，所述固定圆盘(101)上开设有固定孔，所述第二连接杆(40)穿设在所述固定孔内，所述转动圆盘(102)上开设有至少一个滑道(1021)，所述滑道(1021)沿着所述转动圆盘(102)的周向延伸，所述第一连接杆(30)能够沿着所述滑道(1021)滑动，所述转动圆盘(102)插设在所述转动孔内，所述转动圆盘(102)能够相对 所述固定圆盘(101)转动。
  3. 根据权利要求1所述的有载分接开关的往复式切换机构，所述动触头组件(201)包括转动板(2011)以及两个夹紧组件，所述转动板(2011)通过所述第一连接杆(30)和所述第二连接杆(40)与所述连接组件(10)连接，所述转动板(2011)能够绕着所述第二连接杆(40)的中轴线转动，两个所述夹紧组件相对设置在所述转动板(2011)上，所述夹紧组件与所述静触头(202)一一对应设置，所述夹紧组件用于所述静触头(202)的夹紧。
  4. 根据权利要求3所述的有载分接开关的往复式切换机构，所述切换组件还包括滑动组件(50)，所述滑动组件(50)位于所述第二连接杆(40)背离所述第一连接杆(30)的一侧，所述滑动组件(50)穿设在所述连接组件(10)上，且所述滑动组件(50)的两端分别插设在两个所述切换单元(20)上，所述滑动组件(50)与所述切换单元(20)可滑动连接；
    所述滑动组件(50)能够相对所述连接组件(10)滑动。
  5. 根据权利要求4所述的有载分接开关的往复式切换机构，所述滑动组件(50)包括滑杆(501)以及相对设置的两个滑块(502)，所述滑块(502)与所述切换单元(20)一一对应设置，所述滑杆(501)穿设在所述连接组件(10)上，且所述滑杆(501)的两端分别插设在两个所述滑块(502)内，所述滑杆(501)能够相对所述连接组件(10)滑动；
    所述转动板(2011)上开设有滑槽(20111)，所述滑槽(20111)沿着所述第一连接杆(30)的中轴线方向贯通所述转动板(2011)，所述滑块(502)插设在所述滑槽(20111)内，所述滑块(502)能够沿着所述滑槽(20111)滑动。
  6. 根据权利要求5所述的有载分接开关的往复式切换机构，所述动触 头组件(201)还包括弹性件(2013)，所述滑槽(20111)背离所述滑块(502)的一侧开设有安装孔，所述弹性件(2013)的一端通过安装孔与所述第二连接杆(40)的外周壁连接，所述弹性件(2013)的另一端与所述滑块(502)连接；
    所述弹性件(2013)处于压缩状态，所述弹性件(2013)的恢复力用于推动所述转动板(2011)转动。
  7. 根据权利要求3所述的有载分接开关的往复式切换机构，所述夹紧组件包括相对设置的两个夹板(2012)，两个所述夹板(2012)分别设置在所述转动板(2011)的顶端和底端，所述夹板(2012)能够相对所述转动板(2011)转动，两个所述夹板(2012)之间间隔预设距离，用于所述夹紧组件与所述静触头(202)连接。
  8. 根据权利要求7所述的有载分接开关的往复式切换机构，所述夹板(2012)上设置有弧形弹片(20121)，所述夹板(2012)的顶端开设有凹槽，所述弧形弹片(20121)设置在所述凹槽内，所述弧形弹片(20121)与所述夹板(2012)可拆卸连接，所述弧形弹片(20121)用于对所述夹板(2012)起复位作用。
  9. 根据权利要求1所述的有载分接开关的往复式切换机构，所述静触头(202)包括固定部(2021)、第一连接部(2022)以及第二连接部(2023)，所述第一连接部(2022)与所述第二连接部(2023)分别设置在所述固定部(2021)相对的两侧，所述第一连接部(2022)用于与所述动触头组件(201)连接；
    所述第一连接部(2022)沿着所述固定部(2021)的远离所述动触头组件(201)的长度方向厚度逐渐增大。
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