CN208336033U - A kind of reversing mechanism applied to transfer switch - Google Patents

Abstract

The utility model discloses a kind of reversing mechanism applied to transfer switch, including shell, operation shaft is articulated on shell, it operates shaft and is used for band dynamic contact mechanism divide-shut brake, operate the reversing piece that is connected in shaft, an electromagnetic coil is fixed on shell, electromagnetic coil centre bore is equipped with reseting pressuring spring and dynamic iron core, dynamic iron core one end connects reseting pressuring spring, the other end is hinged by one end of connecting pin and STATEMENT OF FEDERALLY SPONSORED, the other end of STATEMENT OF FEDERALLY SPONSORED connects a drive pin, the centre of the reversing piece is equipped with guide through hole, in the guide surface of splayed distribution there are two being set on guide through hole medial surface, drive pin insertion passes through the guide through hole, one return unit is rotatably socketed in operation shaft, return unit is equipped with strip driving through-hole or U-shaped driver slot is matched with drive pin one end；One end connection return unit of a piece tension spring is connected on shell far from drive pin side, the other end.The reseting performance of the utility model driving part is preferable, and the reliability of movement is higher.

Description

A kind of reversing mechanism applied to transfer switch

Technical field

It is especially a kind of applied to transfer switch the utility model relates to transfer switch manufacturing technology field Reversing mechanism.

Background technique

Change-over switch is a kind of for two-way or the device for switching of the above power supply of two-way or load transfer.Change-over switch is wide General is applied to the various places for needing uninterrupted power supply, realizes conversion of the loaded line between two-way power supply, to guarantee The reliability of customer power supply.

Existing change-over switch requires setting reversing mechanism band dynamic contact mechanism divide-shut brake, to realize that loaded line exists Conversion between two-way power supply.The reliability of reversing mechanism switching action directly affects the working performance of change-over switch.Such as 2014 On December 31, in just discloses a Patent No. ZL201210050070.9, the entitled " commutation for dual-power transfer switch The patent of invention of device " comprising switching main shaft (31) and guiding device (8), set on the switching main shaft (31) there are two lead To connecting lever (311) and the intermediate rotary shaft (100) being rotatably arranged on two guiding connecting lever (311)；The guiding device (8) includes The bracket (81) being fixed in switching main shaft (31), two guide plates equipped with slide opening (821) being arranged on bracket (81) (82), be arranged two on bracket (81) and positioned at two guide plates (82) between limit plates (83) equipped with limit hole (831), Two are equipped with the guide sleeve (84) of shift plate (841), two guiding tooth sets (85), an intermediate sleeve (86), two brake springs (87), a guiding axis (88), two commutations spring (89) and the locating shaft (80) for positioning commutation spring (89)；It is described each Guiding tooth set (85) is axially arranged with axis hole (851) along it, and one end of each guiding tooth set (85) is fixed on guide plate (82) On one end far from switching main shaft (31), the other end face is equipped with friction teeth (852)；The both ends of the guiding axis (88) are located at In the axis hole (851) of two guiding tooth sets (85)；Each guide sleeve (84) is set on guiding axis (88), and is oriented to respectively with one Tooth set (85) is provided adjacent to, each guiding tooth set (85) be equipped on one end that it abuts a corresponding guiding tooth set (85) from It closes tooth (841), the other end is equipped with two notches (842) with guiding bevel edge；The intermediate sleeve (86) is located at two guide sleeves (84) it between, and is fixed on guiding axis (88), the two side ends of the intermediate sleeve (86), which are respectively provided with two, has guiding bevel edge Boss (861), the boss (861) match with the notch (842) on guide sleeve (84)；Each brake spring (87) setting Between each guide sleeve (84) and guiding tooth set (85) corresponding to its, top of the guide sleeve (84) in brake spring (87) Make on its clutch tooth (841) and guiding tooth set (85) that there are gaps between friction teeth (852) under pressure effect；The locating shaft (80) Quantity be three；In three locating shafts (80), there is a locating shaft (80) to pass through the positioning shaft hole on two limit plates (83) (822), two locating shafts (80) pass through the corresponding positioning shaft hole (822) on two guide plates (82), and two locating shafts (80) it is also each rotatablely connected with a guiding connecting lever (311)；Spring (89) are respectively commutated between two guide plates (82), and its One end is hooked on respectively across being arranged on the locating shaft (80) on limit plate (83), and the other end is hooked on setting respectively and is being oriented to On a locating shaft (80) on plate (82).Its technical problems to be solved is to provide that a kind of performance is more excellent, effectively improves The reversing arrangement for dual-power transfer switch of switching reliability.But from the structural analysis of this reversing arrangement, component More, the parking position accuracy difficulty of each component is larger after each switching action, and it still needs further improvement for switching motion reliability.

Utility model content

The technical problem to be solved by the present invention is to provide a kind of reversing mechanisms applied to transfer switch, drive The reseting performance of dynamic component is preferable, and the reliability of switching action is higher.

A kind of to achieve the above purpose, the technical solution of the present invention is: reversing machine applied to transfer switch Structure, including change-over switch shell are articulated with operation shaft on shell, and operation shaft is for driving change-over switch contact mechanism division Lock, operates the reversing piece that is connected in shaft, sets on reversing piece there are two retention bead, is installed with gag lever post, shell on shell On fix an electromagnetic coil, electromagnetic coil centre bore is equipped with reseting pressuring spring and dynamic iron core, dynamic iron core one end connect reseting pressuring spring, The other end is hinged by one end of connecting pin and STATEMENT OF FEDERALLY SPONSORED, and the other end of STATEMENT OF FEDERALLY SPONSORED connects a drive pin, the reversing piece Centre be equipped with guide through hole, set on guide through hole medial surface there are two the guide surface in splayed distribution, drive pin insertion or Across the guide through hole, a return unit is rotatably socketed in operation shaft, and return unit is equipped with strip and drives through-hole Or U-shaped driver slot, drive pin one end fits drive on through-hole or the U-shaped driver slot in the strip；The one of a piece tension spring End connection return unit is connected on shell far from drive pin side, the other end；

Dynamic iron core is sucked when electromagnetic coil obtains electric, dynamic iron core drives the drive pin along a guiding by STATEMENT OF FEDERALLY SPONSORED Then face is mobile to drive reversing piece and operation shaft to rotate clockwise or counterclockwise, so that the contact mechanism divide-shut brake, contact When mechanism closes a floodgate, a retention bead on reversing piece touches the gag lever post to limit reversing piece and operation shaft and continue Rotation, when contact mechanism separating brake, another described retention bead on reversing piece touch described gag lever post with limit reversing piece and Operation shaft continues to rotate；

Reseting pressuring spring driving dynamic iron core resets when electromagnetic coil power loss, and the tension spring drives the drive pin by return unit It resets.

It is further improved, the centre of the STATEMENT OF FEDERALLY SPONSORED is equipped with abdicating through hole, and operation shaft passes through the abdicating through hole, described to change Perpendicular to part and operation shaft, the gag lever post, drive pin are parallel with operation shaft.The positional relationship of setting structure in this way Optimized, further increases the reliability of switching action.

It is preferred that the bottom surface of the shell is in a horizontal position and when the drive pin is in reset state, the tension spring is in Vertical state.

It is further improved, two guide surfaces in splayed distribution are connected by one section of transition face, described in two Guide surface is symmetrical arranged relative to transition face；The other side of corresponding two guide surfaces of the guide through hole is respectively provided with a drive pin The locating slot matched when reset with drive pin.

It is further improved, there are two the STATEMENT OF FEDERALLY SPONSOREDs, and the two sides of the reversing piece, two linkages are arranged in two STATEMENT OF FEDERALLY SPONSOREDs One end of part is hinged with the other end of dynamic iron core simultaneously by connecting pin, and the drive pin passes through the other end of two STATEMENT OF FEDERALLY SPONSOREDs And pass through the guide through hole.

It is preferred that the return unit includes one section of cylinder, the centre of cylinder is equipped with through-hole, and cylinder lateral surface extends one section and column The perpendicular cantilever of body, the strip driving through-hole or the U-shaped driver slot are arranged on cantilever, and return unit passes through among cylinder Through-hole rotatably cover operation shaft on, cylinder side is connect with tension spring one end.

It is further improved, be also connected a manual operation arm in the operation shaft.So as to manual switching divide-shut brake.

It being further improved, be connected a registration arm perpendicular with operation shaft in the operation shaft, and the one of registration arm It holds and is hinged with one end of a compression bar, the other end of compression bar connects pressure spring, and for compression spring sleeve on a sleeve, one end of sleeve is hinged On the housing；When the operation shaft drives change-over switch contact mechanism to be in separating brake or close a floodgate, along the diameter of operation shaft To doing section, registration arm drive compression bar turn over by operation spindle central point, registration arm and compression bar hinge joint and sleeve with it is described Three points of housing hinge point connects the dead point of being aligned, and the pressure spring provides a driving force and makes a retention bead on reversing piece It is close to gag lever post.To further increase the stability after operation shaft switching.

It further improves, in sleeve, the other end of the compression bar is also inserted into sleeve the pressure spring.

It further improves, the registration arm is cam-like, and microswitch is housed on the shell beside registration arm, and operation turns The side touching microswitch of registration arm or operation shaft drive change-over switch touching when axis drives change-over switch contact mechanism to close a floodgate Microswitch is touched in the side of registration arm when head mechanism separating brake, and microswitch indicates contact mechanism by controller or indicator light Working condition.Convenient for determining the working condition of contact mechanism.

The utility model is due to adding a return unit, and return unit is rotatably socketed in operation shaft, on return unit Through-hole or U-shaped driver slot are driven equipped with strip, drive pin one end fits drive through-hole or U-shaped driving in the strip On slot；One end connection return unit of a piece tension spring is connected on shell far from drive pin side, the other end.When electromagnetic coil obtain it is electric When doing the switching of contact mechanism divide-shut brake, tension spring can be stretched energy storage, when switching action is completed, reseting pressuring spring when electromagnetic coil power loss Dynamic iron core is driven to reset, the tension spring drives the drive pin to reset by return unit.The parking position accuracy of drive pin, facilitates down The completion of switching action.Therefore the reset of the utility model driving part can effectively improve switching action with regard to preferable Reliability.

Detailed description of the invention

Fig. 1 is the perspective view that the utility model hides microswitch；

Fig. 2 is the perspective view of the utility model hidden parts shell；

Fig. 3 is enlarged drawing at the A of Fig. 2；

Fig. 4 is the utility model top view；

Fig. 5 is the B-B cross-sectional view of Fig. 4；

Fig. 6 is the perspective view of reversing piece；

Fig. 7 is the perspective view of STATEMENT OF FEDERALLY SPONSORED；

Fig. 8 is the perspective view of return unit；

Fig. 9 is the main view that the utility model hidden parts shell and contact mechanism are in "on" position；

Figure 10 is the main view that the utility model hidden parts shell and contact mechanism are in "on" position.

Specific embodiment

The utility model is described in further detail with specific embodiment with reference to the accompanying drawing.

Shown in Fig. 1 to Fig. 8, a kind of reversing mechanism applied to transfer switch, including change-over switch shell 1, shell 1 On be articulated with operation shaft 2, operation shaft 2 is operated and is connected in shaft 2 for driving 100 divide-shut brake of change-over switch contact mechanism One reversing piece 3 is set on reversing piece 3 there are two retention bead 31, and further shown in Fig. 6, a retention bead 31 is in commutation Among 3 upper end of part, another retention bead 31 is on the right side of 3 upper end of reversing piece；Gag lever post 4 is installed on shell 1, on shell 1 An electromagnetic coil 5 is fixed, 5 centre bore of electromagnetic coil is equipped with reseting pressuring spring 51 and dynamic iron core 52, and the connection of 52 one end of dynamic iron core is multiple Position pressure spring 51, the other end are hinged by connecting pin 6 and one end of STATEMENT OF FEDERALLY SPONSORED 7, and the other end of STATEMENT OF FEDERALLY SPONSORED 7 connects a drive pin 8, the centre of the reversing piece 3 is equipped with guide through hole 32, sets that there are two leading in splayed distribution on 32 medial surface of guide through hole To face 321, drive pin 8 passes through the guide through hole 32, and drive pin 8 can also only be inserted into the guide through hole 32, and two are in eight words The guide surface 321 of shape distribution is connected by one section of transition face 322, and two guide surfaces 321 are relative to transition face 322 It is symmetrical arranged, reversing piece 3 is formed and is connected by a square hole 33 and operation shaft 2；Corresponding two guiding of the guide through hole 32 The other side in face 321 is respectively provided with the locating slot 323 matched when a drive pin 8 resets with drive pin 8.

The centre of the STATEMENT OF FEDERALLY SPONSORED 7 is equipped with abdicating through hole 71, and operation shaft 2 passes through the abdicating through hole 71, the reversing piece 3 Perpendicular with operation shaft 2, the gag lever post 4, drive pin 8 are parallel with operation shaft 2；

There are two the STATEMENT OF FEDERALLY SPONSOREDs 7, and two STATEMENT OF FEDERALLY SPONSOREDs 7 are arranged in the two sides of the reversing piece 3, and the one of two STATEMENT OF FEDERALLY SPONSOREDs 7 End is hinged with the other end of dynamic iron core 52 simultaneously by connecting pin 6, and the drive pin 8 passes through the other end of two STATEMENT OF FEDERALLY SPONSOREDs 7 And pass through the guide through hole 32；The downside of each STATEMENT OF FEDERALLY SPONSORED 7 is equipped with lower through-hole 72 and matches with connecting pin 6, each STATEMENT OF FEDERALLY SPONSORED 7 Upside be equipped with upper through-hole 73 matched with drive pin 8；

One return unit 9 is rotatably socketed in operation shaft 2, and return unit 9 is equipped with U-shaped driver slot 91, U-shaped driving Slot 91 can also drive through-hole substitution with strip, and 8 one end fits of drive pin are on the U-shaped driver slot 91；Piece tension spring 10 One end connection return unit 9 is connected on shell 1 far from 8 side of drive pin, the other end；The return unit 9 includes one section of cylinder 9a, The centre of cylinder 9a is equipped with through-hole 92, and cylinder 9a lateral surface extends one section of cantilever 9b perpendicular with cylinder 9a, sets on cantilever 9b The U-shaped driver slot 91 is set, return unit 9 is rotatably covered in operation shaft 2 by the through-hole 92 among cylinder 9a, and cylinder 9a is remote A protrusion 93 is equipped with from 91 side of U-shaped driver slot to connect with 10 one end of tension spring.

When the bottom surface of the shell 1 is in a horizontal position and the drive pin 8 is in reset state, the tension spring 10 is in Vertical state.

Also be connected a manual operation arm 11 in the operation shaft 2, can be rotated and be operated with hand by manual operation arm 11 Shaft 2 is to realize the divide-shut brake of contact mechanism 100.

Be connected a registration arm 12 perpendicular with operation shaft 2 in the operation shaft 2, one end of registration arm 12 and one One end of root compression bar 13 is hinged, and the other end of compression bar 13 connects pressure spring 14,14 sets of pressure spring on a sleeve 15, the one of sleeve 15 End is hinged on the shell 1；When the operation shaft 2 drives change-over switch contact mechanism 100 to be in separating brake or close a floodgate, along behaviour The radial direction for making shaft 2 does section, and registration arm 12 drives compression bar 13 to turn over by 2 central point of operation shaft, registration arm 12 and compression bar 13 Hinge joint and the dead point that connects being aligned with described 3 points of 1 hinge joint of shell of sleeve 15, the pressure spring 14 driving force is provided So that a retention bead 31 on reversing piece 3 is close to gag lever post 4.

In sleeve 15, the other end of the compression bar 13 is also inserted into sleeve 15 pressure spring 14.

The registration arm 12 is cam-like, and microswitch 16 is housed on the shell 1 on 12 side of registration arm, operates 2 band of shaft Turn changes the side touching microswitch 16 of registration arm 12 when switch contact mechanism 100 closes a floodgate or operation shaft 2 drives conversion to open Microswitch 16 is touched in the side of registration arm 12 when closing 100 separating brake of contact mechanism, and microswitch 16 passes through controller or indicator light To indicate the working condition of contact mechanism 100.

Dynamic iron core 52 is sucked when electromagnetic coil 5 obtains electric, dynamic iron core 52 drives described by connecting pin 6 and two STATEMENT OF FEDERALLY SPONSOREDs 7 Then drive pin 8 is moved along a guide surface 321 drives reversing piece 3 and operation shaft 2 to rotate clockwise or counterclockwise, with Make 100 divide-shut brake of contact mechanism described in change-over switch, retention bead when contact mechanism 100 closes a floodgate, on reversing piece 3 The 31 touching gag lever posts 4 are continued to rotate with limiting reversing piece 3 and operation shaft 2, when 100 separating brake of contact mechanism, on reversing piece 3 Another described retention bead 31 touch the gag lever post 4 with limit reversing piece 3 and operation shaft 2 continue to rotate；

Reseting pressuring spring 51 drives dynamic iron core 52 to reset when 5 power loss of electromagnetic coil, and the tension spring 10 drives institute by return unit 9 State the reset of drive pin 8.

The motion process of the present embodiment is as follows: in conjunction with shown in Fig. 5, Fig. 9, change-over switch contact mechanism 100 is in separating brake shape State.It such as needs to close a floodgate at this time, connects 5 power supply of electromagnetic coil, electromagnetic coil 5 generates suction and sucks dynamic iron core 52, and dynamic iron core 52 is logical It crosses connecting pin 6 and two STATEMENT OF FEDERALLY SPONSOREDs 7 drives the drive pin 8 to move then drive reversing piece along 3 left side guide surface 321 of reversing piece 3 and operation shaft 2 rotate counterclockwise, retention bead 31 on the right side of 3 upper end of reversing piece contacts gag lever post 4, registration arm 12 with It is rotated with operation shaft 2, registration arm 12 drives compression bar 13 to turn over by the hinge of 2 central point of operation shaft, registration arm 12 and compression bar 13 Contact and sleeve 15 connect the dead point of being aligned with described 3 points of 1 hinge joint of shell, and the pressure spring 14 provides a driving force and makes The retention bead 31 on the right side on reversing piece 3 is close to gag lever post 4, so that operation shaft 2 is in stable state, change-over switch contact Mechanism 100 is in "on" position；At this time because tension spring 10 is by further elongation, after 5 power loss of electromagnetic coil, reseting pressuring spring 51 is driven Dynamic iron core 52 resets, and tension spring 10 just pulls return unit 9 to rotate clockwise reset, and return unit 9 drives drive pin 8 and two reset connection Moving part 7 resets, and drive pin 8 cooperates on a locating slot 323 of the guide through hole 32.State as shown in Figure 10.

Separating brake again is such as needed at this time, then connects 5 power supply of electromagnetic coil, and electromagnetic coil generates suction and sucks dynamic iron core 52, moves Iron core 52 drives the drive pin 8 to move then band along 3 right side guide surface 321 of reversing piece by connecting pin 6 and two STATEMENT OF FEDERALLY SPONSOREDs 7 Dynamic reversing piece 3 and operation shaft 2 rotate clockwise, and the retention bead 31 among 3 upper end of reversing piece contacts gag lever post 4, fixed Position arm 12 follows operation shaft 2 to rotate clockwise, and registration arm 12 drives compression bar 13 to be turned over again by 2 central point of operation shaft, positioning The hinge joint and sleeve 15 of arm 12 and compression bar 13 connect the dead point of being aligned with described 3 points of 1 hinge joint of shell, and the pressure spring 14 is same Sample can provide a driving force and the retention bead 31 of the centre on reversing piece 3 is made to be close to gag lever post 4, be in operation shaft 2 Stable state, change-over switch contact mechanism 100 are just in gate-dividing state again；Tension spring 10 works as electricity equally by further elongation at this time For magnetic coil 5 again after power loss, reseting pressuring spring 51 drives dynamic iron core 52 to reset, and tension spring 10 pulls return unit 9 to rotate counterclockwise reset, multiple Position part 9 drives drive pin 8 and two reset STATEMENT OF FEDERALLY SPONSOREDs 7 to reset, and drive pin 8 cooperates another positioning in the guide through hole 32 On slot 323, state shown in Fig. 9 is returned to.

The present embodiment can also realize the divide-shut brake of contact mechanism 100 by the manual operation rotation of arm 11 operation shaft 2.

The above is only one preferred embodiments of the utility model, and those skilled in the art is made equivalent by claim Change the protection scope for both falling within this case.

Claims (10)

1. a kind of reversing mechanism applied to transfer switch, including change-over switch shell, it is articulated with operation shaft on shell, Operation shaft is for driving change-over switch contact mechanism divide-shut brake, it is characterised in that: be connected a reversing piece in operation shaft, changes It is set on part there are two retention bead, is installed with gag lever post on shell, an electromagnetic coil, electromagnetic coil center are fixed on shell Hole is equipped with reseting pressuring spring and dynamic iron core, and dynamic iron core one end connects reseting pressuring spring, the other end passes through one end of connecting pin and STATEMENT OF FEDERALLY SPONSORED It is hinged, the other end of STATEMENT OF FEDERALLY SPONSORED connects a drive pin, and the centre of the reversing piece is equipped with guide through hole, guide through hole inside It is set on face there are two the guide surface in splayed distribution, drive pin insertion or across the guide through hole, a return unit can turn Dynamic to be socketed in operation shaft, return unit is equipped with strip driving through-hole or U-shaped driver slot, and drive pin one end fits are described Strip drives on through-hole or the U-shaped driver slot；One end connection return unit of a piece tension spring is far from drive pin side, the other end It is connected on shell；

Dynamic iron core is sucked when electromagnetic coil obtains electric, dynamic iron core drives the drive pin to move along a guide surface by STATEMENT OF FEDERALLY SPONSORED It is dynamic that reversing piece and operation shaft is then driven to rotate clockwise or counterclockwise, so that the contact mechanism divide-shut brake, contact mechanism When combined floodgate, a retention bead on reversing piece touches the gag lever post to limit reversing piece and operation shaft and continue to turn Dynamic, when contact mechanism separating brake, another described retention bead on reversing piece touches described gag lever post to limit reversing piece and behaviour It is continued to rotate as shaft；

Reseting pressuring spring driving dynamic iron core resets when electromagnetic coil power loss, and the tension spring drives the drive pin multiple by return unit Position.

2. a kind of reversing mechanism applied to transfer switch according to claim 1, it is characterised in that: the linkage The centre of part is equipped with abdicating through hole, and operation shaft passes through the abdicating through hole, and the reversing piece and operation shaft are perpendicular, the limit Position bar, drive pin are parallel with operation shaft.

3. a kind of reversing mechanism applied to transfer switch according to claim 1, it is characterised in that: the shell Bottom surface be in a horizontal position and when the drive pin is in reset state, the tension spring is in a vertical state.

4. a kind of reversing mechanism applied to transfer switch according to claim 1, it is characterised in that: two are in eight The guide surface of font distribution is connected by one section of transition face, and two guide surfaces are symmetrical arranged relative to transition face； The other side of corresponding two guide surfaces of the guide through hole is respectively provided with the positioning matched when a drive pin resets with drive pin Slot.

5. a kind of reversing mechanism applied to transfer switch according to claim 1, it is characterised in that: the linkage There are two parts, and two STATEMENT OF FEDERALLY SPONSOREDs are arranged in the two sides of the reversing piece, one end of two STATEMENT OF FEDERALLY SPONSOREDs by connecting pin simultaneously with it is dynamic The other end of iron core is hinged, and the drive pin passes through the other end of two STATEMENT OF FEDERALLY SPONSOREDs and passes through the guide through hole.

6. a kind of reversing mechanism applied to transfer switch according to claim 1, it is characterised in that: the reset Part includes one section of cylinder, and the centre of cylinder is equipped with through-hole, and cylinder lateral surface extends one section of cantilever perpendicular with cylinder, on cantilever The strip driving through-hole or the U-shaped driver slot are set, and return unit is rotatably covered by the through-hole among cylinder to be operated In shaft, cylinder side is connect with tension spring one end.

7. a kind of reversing mechanism applied to transfer switch according to claim 1, it is characterised in that: the operation Also be connected a manual operation arm in shaft.

8. a kind of reversing mechanism applied to transfer switch according to any one of claims 1 to 7, feature exist In: be connected a registration arm perpendicular with operation shaft in the operation shaft, one end of registration arm and the one of a compression bar End is hinged, and the other end of compression bar connects pressure spring, and compression spring sleeve is on a sleeve, and one end of sleeve is hingedly on the housing；Institute State operation shaft drive change-over switch contact mechanism be in separating brake or close a floodgate when, along operate shaft radial direction do section, registration arm Compression bar is driven to turn over hinge joint and sleeve and described three points of housing hinge point companies by operation spindle central point, registration arm and compression bar The dead point of being aligned, the pressure spring provide a driving force and a retention bead on reversing piece are made to be close to gag lever post.

9. a kind of reversing mechanism applied to transfer switch according to claim 8, it is characterised in that: the pressure spring In sleeve, the other end of the compression bar is also inserted into sleeve.

10. a kind of reversing mechanism applied to transfer switch according to claim 8, it is characterised in that: described fixed Position arm is cam-like, and microswitch is housed on the shell beside registration arm, and operation shaft drives change-over switch contact mechanism to close a floodgate When registration arm side touching microswitch or operate shaft drive change-over switch contact mechanism separating brake when registration arm side touching Microswitch is touched, microswitch indicates the working condition of contact mechanism by controller or indicator light.