CN214012767U

CN214012767U - Transformer voltage regulating switch operating mechanism with interlocking function

Info

Publication number: CN214012767U
Application number: CN202022645344.1U
Authority: CN
Inventors: 吴正文; 姜方军
Original assignee: Zhejiang BothWell Electric Co Ltd
Current assignee: Zhejiang BothWell Electric Co Ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-08-20
Anticipated expiration: 2030-11-16

Abstract

The utility model relates to a transformer distribution and transformation technical field provides a transformer tap changer operating device of area interlocking function. Comprises a driving device and a limit linkage component. The driving device comprises an electromagnetic mechanism, a push rod and two sets of pushing assemblies; the limiting linkage assembly comprises a limiting movable part, a supporting fixed part and a tongue piece movable part. The utility model discloses steerable a plurality of vacuum interrupter switches between the break-make state combination of predetermineeing, and each switch break-make state is the locking of associating each other, compares and controls greatly reduced the maloperation probability alone to every switch, more is reliable and stable.

Description

Transformer voltage regulating switch operating mechanism with interlocking function

Technical Field

The utility model belongs to the technical field of transformer distribution and transformation technique and specifically relates to a take operating device of transformer tap changer of interlocking function.

Background

The voltage regulating principle of the transformer is that a plurality of taps are led out from a coil at one side of the transformer, and the on-load tap-changer is switched to another tap from one tap under the condition of not cutting off load current so as to change the effective number of turns of the coil and achieve the purpose of regulating voltage.

The on-load tap changer with multiple gears uses a plurality of vacuum arc-extinguishing chambers to control the on-off of the voltage-regulating branch circuit and adjusts the connection relation of each tap, and the on-off combination of the vacuum arc-extinguishing chambers used by one voltage-regulating switch is always in a fixed state. The operation of the closing and the opening of the vacuum arc-extinguishing chambers requires a driving device to drive the movable conducting rod to move, the prior art mostly adopts a mode of independently controlling each vacuum arc-extinguishing chamber, the structure of an operating mechanism is complex, and a circuit short circuit can be caused to cause serious consequences as long as a certain switch is controlled to have a fault in work.

Disclosure of Invention

Let a plurality of vacuum interrupter switch between appointed break-make state reliably for high efficiency, the utility model provides a take transformer tap changer operating device of interlocking function.

The technical scheme of the utility model is that: a transformer voltage regulating switch operating mechanism with an interlocking function comprises a driving device and a limiting linkage assembly, wherein the driving device comprises an electromagnetic mechanism, a push rod and two sets of pushing assemblies; the limiting linkage assembly comprises a limiting movable part, a supporting fixed part and a tongue piece movable part;

the electromagnetic mechanism is fixedly arranged, and the push rod penetrates through the electromagnetic mechanism and can be driven in two directions along the axial direction; the two sets of pushing assemblies are symmetrically arranged at two ends of the push rod, each pushing assembly comprises a pushing block and a pushing block, the pushing blocks are arranged on sections, extending out of the electromagnetic mechanism, of two ends of the push rod and are in sliding fit with the push rod, and limiting structures for limiting the pushing blocks to slide in the direction away from the electromagnetic mechanism are arranged at two ends of the push rod; a push block tongue piece capable of sliding up and down is arranged in the push block, an elastic piece is arranged above the push block tongue piece, the lower end of the elastic piece extends out of the push block, and a chamfer inclined plane is arranged on one side far away from the electromagnetic mechanism; an elastic mechanism for pushing the push block to slide towards the direction far away from the electromagnetic mechanism is arranged between the push block and the electromagnetic mechanism on the push rod; the ejector block is fixedly arranged and can block the push block from moving towards the direction far away from the electromagnetic mechanism; the lower part of the ejector block is provided with a convex inclined plane which is respectively parallel to the chamfer inclined plane of the tongue piece of the ejector block at the same side and can be in sliding fit with the tongue piece of the ejector block;

the limiting movable piece is arranged in a left-right sliding mode, a plurality of tooth grooves matched with the tongue pieces of the pushing blocks are formed in the two ends above the limiting movable piece, Z limiting sliding grooves are transversely arranged in the limiting movable piece, and each limiting sliding groove is provided with a specific up-down fluctuation shape; the number of the tongue piece moving parts is Z, the rear ends of the tongue piece moving parts are respectively connected with the movable conductive columns of the vacuum arc extinguish chamber, and the front ends of the tongue piece moving parts are respectively installed in the limiting sliding grooves of the limiting moving parts through pin shafts; the supporting fixed piece is fixedly arranged and is provided with Z grooves for limiting the pin shaft to move only in the vertical direction; the number Z is equal to the number of vacuum interrupters used by the corresponding voltage regulating switch.

The utility model discloses a mechanism of operation does:

and the limiting sliding grooves on the limiting moving parts respectively restrict the up-and-down movement of each tongue piece moving part through the pin shafts, so that the movement of the movable conducting rods at the movable ends of the vacuum arc-extinguishing chambers is guided. When the limiting moving part moves transversely, each limiting sliding groove on the limiting moving part also moves, the shaft pin at the front end of the tongue piece moving part in the limiting sliding groove can only move up and down to adapt to the position of the sliding groove, and the fluctuation of the height shape of each limiting sliding groove drives each moving conducting rod to extend or retract in a preset state, so that the switching-on or switching-off of each arc extinguish chamber is realized. Therefore, the limiting moving part moves at different transverse positions, and the switching of different on-off combination states of the vacuum arc-extinguishing chambers can be realized, namely the gear switching of the voltage regulating switch.

Due to the fixed linkage relation among the limiting sliding grooves, the on-off states of the arc extinguishing chambers are mutually associated and are not allowed to be controlled independently, and only a plurality of required states are combined, so that the design is named as 'with an interlocking function', and circuit faults and potential safety hazards caused by misoperation can be effectively avoided.

The limiting movable part is used as a driven part of the driving device, and the driving device completes transverse driving control on the limiting movable part.

Under the default state that the electromagnetic mechanism is not electrified, the elastic mechanism respectively pushes the push blocks at two ends to be contacted with the push blocks, the push blocks respectively push the limiting structures at the end parts of the push rods, and the push rods are naturally positioned at the central positions of the electromagnetic mechanism and marked as initial positions. Under the default state, the tongue piece of the push block in the push block is propped against the convex inclined surface of the top block, and most of the tongue piece is contracted in the push block.

The axial direction of the push rod is used as the left-right direction. When the electromagnetic mechanism drives the pushing rod to move leftwards, the pushing rod simultaneously drives the pushing block on the right side to move leftwards; when the right push block moves leftwards and leaves the right ejector block, the tongue piece of the right push block is pushed by the built-in elastic piece to extend out, and the lower end of the tongue piece of the right push block extends into a tooth groove at the right end above the limiting moving piece to drive the driven piece to move leftwards by a unit stroke. The right-hand spring mechanism is compressed during this process. After the electromagnetic mechanism stops being electrified, the right push block and the push rod return to the initial position under the action of the right elastic mechanism. In the process that the right side push block is reset rightwards, the tongue piece of the push block with the chamfer inclined plane is contacted with the right edge of the tooth socket of the limiting moving part like an inclined tongue lock and retracts upwards into the push block, so that the limiting moving part still stays at the previous position after the push block and the push rod are reset. The process that the limiting moving part moves leftwards by one unit stroke is described above. Because the two ends above the limiting moving part are provided with the tooth sockets, the electromagnetic mechanism drives the push rod for many times in the same direction so as to enable the limiting moving part to continuously move for a plurality of unit strokes in the same direction.

And the process is completely bilaterally symmetrical, when the electromagnetic mechanism drives the push rod to move rightwards, the driven piece can move rightwards by one unit of stroke. Therefore, the limiting moving part can realize bidirectional multistage movement, and each stage of position corresponds to the on-off combined state of a vacuum arc extinguish chamber, namely a gear of the voltage regulating switch.

Preferably, the limiting movable piece and the supporting fixed piece are designed into a U shape with double layers in a side view. As mentioned above, the pin shaft at the front end of the tongue piece moving part is simultaneously restrained by the sliding groove on the limiting moving part and the groove on the supporting moving part, and if the three parts are all in a single-layer sheet shape, the pin shaft is uneven in stress and easy to incline. The limiting and fixing piece and the supporting and fixing piece are made into double-layer U-shaped pieces, the U-shaped supporting and fixing piece is thickest, the U-shaped limiting piece is installed in the middle hollow area, the sheet tongue piece moving piece is arranged in the middle of the double-layer panel of the U-shaped limiting piece, a symmetrical laminated and staggered structure is formed, and the working stability of the limiting linkage assembly and the whole voltage regulating switch is greatly enhanced.

Further, to the five grades of on-load tap changers comparatively commonly used, tap changer operating device will four vacuum interrupter of simultaneous control, need three kinds of position states, under this condition there are four spacing spouts in spacing movable part inside, and every spout length does the tooth's socket interval is twice.

Further, the mode that the stopper realized the side-to-side slip does: a pair of transverse sliding grooves is arranged and is matched with the fixed pin.

Furthermore, the limiting structures at the two ends of the push rod are nuts screwed at the end part of the push rod.

Furthermore, the distance between the two top blocks is equal to the distance between the limiting structures at the two ends of the push rod.

Further, the tooth socket distance of the limiting moving part is equal to the distance of single movement of the push rod.

Further, the electromagnetic mechanism comprises a fixed frame, a pair of static armatures, a movable armature and an electromagnetic coil. The fixed frame is fixedly arranged, the static armatures are symmetrically arranged at two ends of the fixed frame, and the movable armatures are arranged on the fixed frame and are in sliding fit with the fixed frame and can move between the two static armatures. The pushing rod penetrates through the movable armature and the static armature, and the pushing rod is fixed with the movable armature and is in sliding fit with the static armature. The electromagnetic coils are divided into a left group and a right group and are arranged on the fixed frame.

Furthermore, the elastic piece above the tongue piece of the pushing block is a spring, and the elastic mechanism on the pushing rod is a spring and is sleeved on the pushing rod.

The utility model discloses an operating device is used for transformer voltage regulating switch, can realize the unified switching control to the different break-make composite state of a plurality of vacuum interrupter, and each vacuum interrupter state locks the relevance mutually, and composite state beyond predetermineeing can not appear arousing consequences such as circuit short circuit. The utility model discloses operating device is convenient high-efficient, and the structure is retrencied small to controllable vacuum interrupter composite state quantity does not have the upper limit in theory.

Drawings

Fig. 1 is a general schematic diagram of a five-gear transformer voltage regulating switch embodiment adopting the driving device of the present invention.

Fig. 2 is the utility model discloses a five-pin polarity switch schematic diagram in the pressure regulating switch.

Fig. 3 is a schematic diagram of a transformer voltage regulating switch operating mechanism with an interlocking function, which comprises the driving device of the present invention.

Fig. 4 is a schematic view of the driving device of the present invention.

Fig. 5 is a front sectional view of the electromagnetic mechanism.

Fig. 6 is a left side view of the electromagnetic mechanism.

Fig. 7 is a schematic front view and a schematic left view of the U-shaped limiting stopper in fig. 3.

Figure 8 is a three-dimensional view of the U-shaped support member of figure 3.

Fig. 9 is a circuit connection diagram of the embodiment shown in fig. 1.

Detailed Description

The following description will be made by taking the fifth-gear transformer tap changer with the tap changer operating mechanism with the interlocking function as an embodiment and combining with the accompanying drawings.

Referring to fig. 1-4 (all of which are viewed as a top view), a five-stage transformer voltage regulating switch with an interlocking function includes a housing (not shown in the drawings), a bottom plate 100, a five-pin polarity switch Kj, a vacuum arc-extinguishing chamber module, a protection resistor 33, and a switch operating mechanism; the bottom plate is the rectangle, and parts or subassembly except that the shell all install on the bottom plate, the shell cover protects inside part on the bottom plate.

Fig. 2 shows the five-pin polarity switch Kj, which includes five connecting pins 6, two linkage plates 13, a connecting pin mounting seat 10 and a linkage plate driving device; the five connecting pins are distributed on the connecting pin mounting base 10 at intervals along a straight line, the two circular linkage pieces 13 are mounted on the linkage piece driving device, and the connecting line direction of the two circular linkage pieces is parallel to the straight line where the five connecting pins are located; the linkage sheet driving device comprises a limiting groove 14, a push rod 20, a pair of U-shaped supports 21 and an electromagnetic driver 24; the linkage piece 13 is arranged on a push rod 20 through a limiting groove 14 with a built-in spring, the push rod 20 is limited by a pair of U-shaped support limiting brackets 21 arranged on a bottom plate to move up and down, one end of the push rod is limited in a sliding groove of the limiting bracket 21 on the left side through a pin shaft, and the other end of the push rod is connected with an electromagnetic driver 24 and can slide axially;

the vacuum arc-extinguishing chamber module comprises 4 vacuum arc-extinguishing chambers K0, Ke, Km and K1 which are arranged in parallel, and an I-shaped supporting bar 32 and a four-position bracket 31 which are used for fixing the vacuum arc-extinguishing chambers.

Fig. 3 shows the switch operating mechanism, including a drive device and a limit linkage assembly.

Fig. 4 shows the driving device, which includes a fixed frame 41,

static armatures

42 and 43, a movable armature 44, an electromagnetic coil 40, a pushing rod 45, a pair of pushing assemblies and a U-shaped limit stopper 53 as a driven member. The limit linkage assembly comprises a U-shaped limit movable piece 53, a U-shaped supporting fixed piece 60 and four tongue piece movable pieces 65. Wherein, the fixed mount, the static armature, the movable armature and the electromagnetic coil form an electromagnetic mechanism.

The fixed frame 41 is fixed on the bottom plate 100, the

fixed armatures

42 and 43 are symmetrically arranged at two ends of the fixed frame 41, and the movable armature 44 is arranged on the fixed frame and is in sliding fit with the fixed frame and can move between the two fixed armatures. The pushing rod 45 transversely penetrates through the movable armature 44 and the

static armatures

42 and 43, and the pushing rod 45 is fixed with the movable armature 44 and is in sliding fit with the static armatures. The electromagnetic coils 40 are divided into a left group and a right group and are arranged on the fixed frame, the left electromagnetic coil 401 partially covers the left static armature 42 and the movable armature 44, and the right electromagnetic coil 402 partially covers the right static armature 43 and the movable armature 44.

Specifically, as shown in fig. 5 and 6, the fixing frame 41 of the electromagnetic mechanism is composed of a pair of fixing frames 411 and a plurality of laminated silicon steel sheets 413; the fixing frame 411 is a rectangular ring, is arranged at intervals from top to bottom, is vertically fixed on the bottom plate 100 through 4L-shaped brackets 415, and silicon steel sheets 413 are clamped between the fixing frames 411; the silicon steel sheets 413 are in a chevron shape, two groups of upper and lower laminated silicon steel sheets are arranged in the height direction perpendicular to the bottom plate 100, the opening of the lower silicon steel sheet group faces upwards, the opening of the lower silicon steel sheet group faces downwards, a space is reserved between the upper and lower silicon steel sheet groups, and the movable armature 44 and the

static armatures

42 and 43 are arranged in the space. Electromagnetic coils 401 and 402 (shown by the outline of the coil in fig. 4, and the bobbin around which the electromagnetic coil is wound in fig. 5 and 6) are respectively disposed in two rectangular spaces formed by two opposite silicon steel sheet groups in a chevron shape.

The pushing assemblies are symmetrically arranged at two ends of the pushing rod 45, the left side comprises a pushing block 46 and an ejector block 48, and the right side comprises a pushing block 47 and an ejector block 49. The push blocks 46 and 47 are provided with transverse through holes, the two push blocks are oppositely sleeved on sections of the two ends of the push rod 45 extending out of the electromagnetic mechanism and are in sliding fit with the push rod 45, and nuts are arranged at the two ends of the push rod to block the push blocks; the lower parts of the push blocks 46 and 47 are provided with longitudinal sliding groove holes, the sliding groove holes are respectively internally provided with a push block tongue piece 51 and a push block tongue piece 52 which can slide, and the bottoms of the sliding groove holes are provided with springs; the push block tongue piece is a rectangular column, the lower end of the left push block tongue piece 51 is provided with a chamfer inclined plane close to the left, and the lower end of the right push block tongue piece 52 is provided with an inclined plane chamfer close to the right. The push rod 45 is sleeved with a pair of return springs which are respectively positioned between the two push blocks and the electromagnetic mechanism. The ejector block is fixed on the bottom plate, the left ejector block 48 can block the push block 46 from moving leftwards, and the right ejector block 49 can block the push block 47 from moving rightwards; the lower parts of the ejector blocks 48 and 49 are provided with convex inclined surfaces which are respectively parallel to the chamfer inclined surfaces of the tongue pieces of the ejector blocks on the same side and can be in sliding fit with each other. The two ends of the upper part of the U-shaped limiting moving part 53 are provided with a plurality of tooth grooves matched with the pushing block tongue pieces, the width of each tooth groove is equal to that of the pushing

block tongue pieces

51 and 52, and the distance between the tooth grooves is equal to the single movement stroke of the push rod 45. The distance between the contact surfaces of the ejector blocks 48 and 49 with the push blocks is equal to the distance between the contact surfaces of the nuts at the two ends of the push rod 45 with the push blocks.

The U-shaped limiting moving part 53 is arranged on the bottom plate in a left-right sliding manner, a plurality of tooth sockets matched with the tongue pieces of the pushing block are arranged at two ends above the U-shaped limiting moving part, 4 limiting sliding grooves which are transversely arranged are arranged in the U-shaped limiting moving part, and each limiting sliding groove is in a specific up-down fluctuation shape; the number of the tongue piece moving parts 65 is 4, the rear ends of the tongue piece moving parts are respectively connected with the movable conductive columns of the vacuum arc-extinguishing chamber, and the front ends of the tongue piece moving parts are respectively installed in the limiting sliding grooves of the limiting moving parts 53 through pin shafts; the supporting member 60 is fixed to the base plate and has 4 grooves 61 for limiting the movement of the pin shaft only in the up-and-down direction.

As shown in the front view and the side view of fig. 7, the U-shaped limiting moving part 53 is a U-shaped double-layer structure, and the four tongue moving parts 65 are installed in the hollow groove space in the middle; the structure of the U-shaped supporting fixed piece 60 is shown in the three-view of FIG. 8, and is also a U-shaped double-layer structure when seen from the side, and the hollow space in the middle can just accommodate the thickness of the U-shaped limiting movable piece 53; the three components form a five-layer laminated structure which is symmetrical up and down, and four pin shafts penetrate through the five-layer laminated structure and connect the five-layer laminated structure.

On the connection of the circuit, referring to fig. 9, a first connecting pin 1 is connected with a fifth connecting pin 5 and a tap X3 at the lower end of a regulating coil L2 in a regulating winding, a second connecting pin 2 is connected with the fixed end of a vacuum arc-extinguishing chamber Km, a third connecting pin 3 is connected with a tap X1 at the upper end of a regulating coil L1 in the regulating winding, a fourth connecting pin 4 is connected with a tap at the lower end of a main winding L and the fixed end of a vacuum arc-extinguishing chamber Ke, and a tap X2 connected with the middle of the regulating coil L1 and the L2 in the regulating winding is connected with the fixed end of the vacuum arc-extinguishing chamber K1. And an upper end tap of the main winding L is connected with the input end A of the whole voltage regulating switch circuit. The protection resistor 33 (R in the circuit diagram) and the vacuum interrupter K0 are connected in parallel to form a transition switching unit, which plays a role of protecting the circuit during switching. In the transition switching unit, the movable end of the vacuum arc extinguish chamber K0 is connected with the movable ends of the vacuum arc extinguish chambers Km and Ke and the output end X0 of the whole voltage regulating switch circuit, and the fixed end of the vacuum arc extinguish chamber K0 is connected with the movable end of the vacuum arc extinguish chamber K1.

With reference to fig. 9, the combination state of the polarity switch Kj and the on-off switches corresponds to each gear of the voltage regulating circuit as follows:

the first linkage structure is that the linkage sheet 11 is simultaneously communicated with the connecting pin 1 and the connecting pin 2, the linkage sheet 12 is simultaneously communicated with the connecting pin 3 and the connecting pin 4, and the switch states of all gears are as follows

Third gear: ke is closed, K0 is opened, and both L1 and L2 are not connected into the circuit, so that power is supplied by rated voltage;

fourth gear: ke is open, K1 is closed, K0 is closed, and L1 is connected into the circuit;

fifth gear: ke is open, Km is closed, K0 is open, and L1 and L2 are connected into the circuit;

the second linkage structure is that the linkage sheet 11 is simultaneously communicated with the connecting pin 2 and the connecting pin 3, the linkage sheet 12 is simultaneously communicated with the connecting pin 4 and the connecting pin 5, and the switch states of all gears are as follows

second gear: ke is opened, K1 is closed, K0 is closed, and L2 is reversely connected into the circuit;

first gear: ke is opened, Km is closed, K0 is opened, and L2 and L1 are reversely connected into the circuit;

the following describes how the switch operating mechanism in this embodiment realizes unified operation of the vacuum interrupter modules by taking an example of five-gear shifting as four-gear shifting.

As shown in fig. 1, the polarity switch is in the first linkage state, and the U-shaped limit stopper is at the leftmost position, and the state of the tongue stopper is defined by the former limit chute 54 as: corresponding to Km contraction, corresponding to K0, K1, Ke extension. That is, since the graph corresponds to a state where Km is closed and K0, K1, and Ke are open, the illustrated pressure regulating switch is in the fifth position where the boost pressure is highest.

The right electromagnetic coil 402 is electrified, under the magnetization effect, the right static armature 43 attracts the moving armature 44 to move rightwards, the push rod 45 also moves rightwards, the left nut drives the push block 46 to move rightwards, the moving distance is equal to the distance between the tooth grooves 58 above the U-shaped limiting moving part 53, and the moving distance is half of the horizontal length of the single limiting sliding groove 54. In the initial state, the chamfer of the lower end inclined plane of the push block tongue piece 51 is attached to the inclined plane of the top block 48 and limited in the chute hole of the push block 46, and when the push rod moves rightwards, the push block tongue piece is pushed by the built-in spring to extend downwards to the position of the dotted line in fig. 2 and is matched with the tooth groove 58, so that the U-shaped limiting moving piece 53 is driven to move rightwards. In the process, the return spring sleeved on the push rod 45 between the static armature 42 and the push block 46 is compressed; when the stop member 53 reaches a predetermined position, the electromagnetic coil 402 is powered off, the push rod 45 returns to the central position under the elastic force of the return spring, the chamfered inclined surface of the push block tongue piece 51 collides with the edge of the tooth groove 58, and the stop member is forced to retract into the sliding groove hole of the push block 46 like a latch bolt door lock, and the stop member remains at the pushed position due to friction force. The distance of the U-shaped limiting movable piece 53 moving rightwards is half of the length of the limiting sliding groove 54, so that the four tongue piece movable pieces 65 are respectively positioned in the middle of the limiting sliding groove 54 after moving.

By comparing the specific shape of each limiting chute in fig. 7, it can be known that after the chute 54a is displaced, the corresponding pin shaft is changed from the low position at the right end to the high position at the middle, and the corresponding vacuum arc-extinguishing chamber Km is disconnected; after the sliding groove 54b is displaced, the corresponding pin shaft is changed from the high position at the right end to the low position at the middle, and the corresponding vacuum arc-extinguishing chamber K0 is closed; after the sliding groove 54c is displaced, the corresponding pin shaft is changed from the high position at the right end to the low position at the middle, and the corresponding vacuum arc-extinguishing chamber K1 is closed; the upper and lower positions of the pin shaft before and after the displacement of the chute 54d are unchanged, and the corresponding vacuum arc-extinguishing chamber Ke is kept disconnected. So that the state of the voltage regulating circuit is changed from the fifth gear to the fourth gear.

If the electromagnetic coil 402 is energized once more, the above process is repeated, the U-shaped stopper 53 moves from the middle position to the rightmost position, and the four pins and the associated tongue piece 65 change from the middle position of the stopper chute 54 to the leftmost position. The pin shaft corresponding to the chute 54a is fixed, and Km is kept disconnected; the pin shaft corresponding to the sliding groove 54b is changed from the low position to the high position, and K0 is disconnected; the pin shaft corresponding to the chute 54c is changed from the low position to the high position, and K1 is disconnected; the pin shaft corresponding to the chute 54d is changed from the high position to the low position, and Ke is disconnected. So that the voltage regulating circuit is changed from the fourth gear to the third gear.

If the reverse boosting adjustment is needed, the left electromagnetic coil 401 is energized, and the push block 46 and the push block tongue piece 52 drive the U-shaped limit moving piece 53 to move leftwards in a completely symmetrical manner, so that the limit linkage assembly moves reversely as above, and the switching from the third gear to the fourth gear or from the fourth gear to the fifth gear is completed.

It should be noted that the present invention is not limited to the above embodiments, and general technical personnel in the field can adopt other various embodiments to implement the present invention according to the disclosure of the present invention, or adopt the design structure and idea of the present invention, which can be changed or changed simply, and all fall into the protection scope of the present invention.

Claims

1. A transformer voltage regulating switch operating mechanism with an interlocking function comprises a driving device and a limiting linkage assembly, and is characterized in that the driving device comprises an electromagnetic mechanism, a push rod and two sets of pushing assemblies; the limiting linkage assembly comprises a limiting movable part, a supporting fixed part and a tongue piece movable part;

the limiting movable piece is arranged in a left-right sliding mode, a plurality of tooth grooves matched with the tongue pieces of the pushing blocks are formed in the two ends above the limiting movable piece, Z limiting sliding grooves are transversely arranged in the limiting movable piece, and each limiting sliding groove is of an up-down fluctuating shape; the number of the tongue piece moving parts is Z, the rear ends of the tongue piece moving parts are respectively connected with the movable conductive columns of the vacuum arc extinguish chamber, and the front ends of the tongue piece moving parts are respectively installed in the limiting sliding grooves of the limiting moving parts through pin shafts; the supporting fixed piece is fixedly arranged and is provided with Z grooves for limiting the pin shaft to move only in the vertical direction; the number Z is equal to the number of vacuum interrupters used by the corresponding voltage regulating switch.

2. The transformer voltage regulating switch operating mechanism with the interlocking function according to claim 1, wherein the limiting movable member and the supporting fixed member are of a U-shaped double-layer three-dimensional structure, the tongue piece movable member is installed in a hollow space in the middle of the limiting movable member, and the limiting movable member is embedded in a hollow space in the middle of the supporting fixed member.

3. The transformer voltage regulating switch operating mechanism with the interlocking function as claimed in claim 1, wherein the limiting moving part is further provided with a pair of transverse sliding grooves which are installed in cooperation with a fixedly arranged pin to realize left and right sliding.

4. The transformer tap changer operating mechanism with interlocking function as claimed in claim 1, wherein Z =4, said limit moving member has three position states, and the length of the limit sliding groove is twice as long as the pitch of the tooth grooves; this requirement applies to a five-step transformer tap changer.

5. The transformer tap changer operating mechanism with interlocking function as claimed in claim 1, wherein the limit structures at both ends of the push rod are nuts screwed on the end of the push rod.

6. The transformer tap changer operating mechanism with interlocking function as claimed in claim 1, wherein the distance between the two top blocks is equal to the distance between the limit structures at both ends of the push rod.

7. The transformer voltage regulating switch operating mechanism with the interlocking function as claimed in claim 1, wherein the pitch of the tooth grooves of the limit moving member is equal to the distance of a single movement of the push rod.

8. The transformer tap changer operating mechanism with interlocking function according to claim 1, wherein the electromagnetic mechanism comprises a fixed frame, a pair of static armatures, a movable armature and an electromagnetic coil; the fixed frame is fixedly arranged, the static armatures are symmetrically arranged at two ends of the fixed frame, and the movable armatures are arranged on the fixed frame, are in sliding fit with the fixed frame and can move between the two static armatures; the pushing rod penetrates through the movable armature and the static armature, and the pushing rod is fixed with the movable armature and is in sliding fit with the static armature; the electromagnetic coils are divided into a left group and a right group and are arranged on the fixed frame.

9. The transformer voltage regulating switch operating mechanism with the interlocking function as claimed in claim 1, wherein the elastic member above the tongue piece of the push block is a spring, and the elastic mechanism on the push rod is a spring and is sleeved on the push rod.