Drive device for transformer voltage regulating switch operating mechanism

Abstract

The present invention relates to the technical field of transformer distribution and transformation. Disclosed is a driving device for a transformer voltage regulating switch operating mechanism, comprising an electromagnetic mechanism, a push rod, a push assembly and a driven part. The electromagnetic mechanism is fixedly arranged, and the push rod runs through the electromagnetic mechanism and can be driven bidirectionally along the axial direction. The push assembly is symmetrically arranged at both ends of the push rod, and comprises a pair of push blocks and a pair of push blocks. The present invention realizes bidirectional and multi-gear driving of the driven part with a simple and ingenious mechanical structure.

Description

Technical Field

[0001] The invention relates to the technical field of transformer power distribution and transformation, in particular to a driving device used in a transformer voltage regulating switch operating mechanism. Background Art

[0002] Transformer voltage regulators usually use vacuum interrupters to control the on and off of each voltage regulating branch, and the operating mechanism that controls the vacuum interrupter requires a drive device. The mainstream drive devices are spring energy storage type and electromagnetic drive type. The disadvantage of the spring energy storage type is that the structure is relatively complex, the number of parts is large, and the manufacturing process is complex, while the electromagnetic drive is relatively simple in structure, the number of parts is small, the operation is reliable, and the manufacturing cost is low.

[0003] Conventional electromagnetic drive devices can only drive a single part to move back and forth between two stations, usually directly connected to the moving contact of the vacuum interrupter to achieve its closing / opening position switching; for a voltage regulator including multiple vacuum interrupters, each vacuum interrupter needs to be equipped with a separate electromagnetic drive mechanism for on-off control. In this way, the volume of the entire voltage regulator will increase significantly, the number of parts will increase, and the cost will be higher. In addition, the essence of the gear switching of the multi-speed transformer voltage regulator is to switch between various on-off combinations of multiple switches (vacuum interrupters) in the voltage regulation circuit. Therefore, the opening and closing of each vacuum interrupter have a certain correlation. If all are independently controlled, it is necessary to ensure the simultaneity of operation and avoid misoperation. Some switch on-off combinations under misoperation may cause circuit short circuits and serious accidents.

[0004] The multi-position transformer voltage regulating switch uses a set of operating mechanisms to simultaneously switch the on and off states of multiple vacuum interrupters. It has a simpler structure and is more reliable. However, it involves the need for driving components to move in both directions between multiple working positions (positions), which cannot be met by conventional electromagnetic drives. Summary of the invention

[0005] The object of the present invention is to provide a driving device for a transformer voltage regulating switch operating mechanism, which can realize bidirectional multi-gear driving of a driven component while maintaining a simple structure and without using a large number of parts or electronic control.

[0006] To achieve the above purpose, the technical solution of the present invention is: a driving device for a transformer voltage regulating switch operating mechanism, comprising an electromagnetic mechanism, a push rod, two sets of push assemblies and a driven part; the electromagnetic mechanism is fixedly arranged, and the push rod runs through the electromagnetic mechanism and can be driven bidirectionally along the axial direction; the two sets of push assemblies are symmetrically arranged at both ends of the push rod, and the push assembly includes a push block and a push block; the push block is arranged on the sections of the push rod at both ends that extend out of the electromagnetic mechanism, and is slidably matched with the push rod, and there are limit structures at both ends of the push rod to limit the push block from sliding in the direction away from the electromagnetic mechanism. ; A push block tongue that can slide up and down is provided in the push block, and an elastic member is provided above the push block tongue, the lower end of which extends out of the push block and has a chamfered surface on the side away from the electromagnetic mechanism; an elastic mechanism is provided on the push rod between the push block and the electromagnetic mechanism to push the push block to slide in the direction away from the electromagnetic mechanism; the top block is fixedly arranged and can block the push block from moving in the direction away from the electromagnetic mechanism; a protruding inclined surface is provided at the bottom of the top block, and the inclined surfaces are respectively parallel to the chamfered inclined surfaces of the push block tongue on the same side and can be slidably matched; a plurality of tooth grooves matching the push block tongue are provided at both ends of the upper part of the driven part.

[0007] In the above technical solution, in the default state when the electromagnetic mechanism is not powered, the reset elastic member respectively presses against the push blocks at both ends to contact the top block, and the push blocks respectively press against the limit structures at the ends of the push rod, and the push rod is naturally in the center position of the electromagnetic mechanism, which is recorded as the initial position. In the default state, the push block tongue in the push block is pressed against the protruding inclined surface of the top block, and most of it is retracted in the push block.

[0008] The axial direction of the push rod is the left-right direction. When the electromagnetic mechanism drives the push rod to move to the left, the push rod drives the push block on the right to move to the left at the same time; when the push block on the right moves to the left and leaves the top block on the right, the tongue of the push block on the right is extended by the thrust of the built-in elastic member, and the lower end extends into a tooth groove at the right end of the driven member, driving the driven member to move one unit stroke to the left. In this process, the elastic mechanism on the right is compressed. After the electromagnetic mechanism stops energizing, the push block and the push rod on the right return to their initial positions under the action of the elastic mechanism on the right. In the process of the right push block resetting to the right, the tongue of the push block with the chamfered bevel contacts the right edge of the tooth groove of the driven member like a bevel lock and retracts upward into the push block. Therefore, when the push block and the push rod are reset, the driven member remains in the previous position. The above is the process of the driven member moving one unit stroke to the left. Since there are multiple tooth grooves at both ends of the upper part of the driven member, the electromagnetic mechanism drives the push rod in the same direction multiple times to make the driven member move multiple unit strokes in the same direction continuously.

[0009] Completely symmetrical with the above process, when the electromagnetic mechanism drives the push rod to move to the right, the driven part can move one unit stroke to the right. Therefore, the driven part can achieve bidirectional multi-stage movement. Therefore, the driving device is applied to the operating mechanism of the transformer voltage regulating switch, and in conjunction with the design of other components, each position of the driven part corresponds to a combination state of the vacuum interrupter on and off, so that the switching between multiple voltage regulating states can be achieved.

[0010] Furthermore, the limiting structures at both ends of the push rod are nuts screwed on the ends of the push rod.

[0011] Furthermore, the push block has a transverse through hole so as to be sleeved on the push rod.

[0012] Furthermore, the elastic member above the push block tongue is a spring, and the reset elastic member on the push rod is a spring.

[0013] Furthermore, the distance between the two top blocks is equal to the distance between the limiting structures at both ends of the push rod.

[0014] Furthermore, the width of the tooth groove on the driven member is equal to the width of the tongue piece of the push block.

[0015] Furthermore, the tooth groove spacing of the driven member is equal to the distance of a single movement of the push rod.

[0016] Furthermore, the electromagnetic mechanism includes a fixed frame, a pair of stationary armatures, a movable armature and an electromagnetic coil. The fixed frame is fixedly arranged, the stationary armatures are symmetrically arranged at both ends of the fixed frame, the movable armature is mounted on the fixed frame and slidably cooperates with the fixed frame, and can move between the two stationary armatures. The push rod passes through the movable armature and the stationary armature, the push rod is fixed to the movable armature and slidably cooperates with the stationary armature. The electromagnetic coil is divided into two groups, left and right, and is arranged on the fixed frame.

[0017] In the default state, the movable armature is in the initial position in the center of the fixed frame. When the electromagnetic coil on the left is energized, the static armature on the left and the movable armature are in the magnetic field of the coil, magnetized, and attracted to each other. The movable armature approaches the static armature on the left and drives the push rod to move to the left. When the electromagnetic coil stops energizing, the push rod and the movable armature return to the initial position. Symmetrically, when the electromagnetic coil on the right is energized, the static armature on the right and the movable armature will be magnetized and attracted to each other, and the movable armature drives the push rod to move to the right.

[0018] Furthermore, the fixed frame is composed of a pair of fixed frames and a plurality of stacked silicon steel sheets; the fixed frames are spaced apart from each other and fixed vertically, with the silicon steel sheets sandwiched between the fixed frames; the silicon steel sheets are in the shape of a mountain, with two groups of stacked silicon steel sheets arranged in the height direction, the opening of the lower silicon steel sheet group facing upward, and the opening of the upper silicon steel sheet group facing downward, with a space left between the upper and lower silicon steel sheet groups, and the moving armature and the static armature arranged in the space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a general schematic diagram of an embodiment of a five-speed transformer voltage regulating switch adopting the driving device of the present invention.

[0020] Figure 2 This is a schematic diagram of a five-pin polarity switch in the voltage regulating switch of the present invention.

[0021] Figure 3 The figure is a schematic diagram of an operating mechanism of a transformer voltage regulating switch with an interlocking function including the driving device described in the present invention.

[0022] Figure 4 Schematic diagram of the driving device of the present invention.

[0023] Figure 5 It is a front cross-sectional view of the electromagnetic mechanism.

[0024] Figure 6 It is a left side view of the electromagnetic mechanism.

[0025] Figure 7 for Figure 3 Schematic diagram of the front and left views of the middle U-shaped limit moving part.

[0026] Figure 8 for Figure 3 Three views of the middle U-shaped support fixture.

[0027] Fig. 9 for Figure 1 Circuit connection diagram of the illustrated embodiment. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings by taking a five-speed transformer voltage regulating switch with an interlocking function that adopts the driving device of the present invention as an example.

[0029] Reference Figure 1 –4 (all viewed from a top view), a five-speed transformer voltage regulating switch with an interlocking function, comprising a housing (not shown), a base plate 100, a five-pin polarity switch Kj, a vacuum interrupter module, a protective resistor 33 and a switch operating mechanism; the base plate is rectangular, and all parts or components except the housing are mounted on the base plate, and the housing is mounted on the base plate to protect the internal parts.

[0030] Figure 2The five-pin polarity switch Kj is shown, which includes five connecting pins 6, two linkage pieces 13, a connecting pin mounting seat 10 and a linkage piece driving device; the five connecting pins are distributed on the connecting pin mounting seat 10 at intervals along a straight line, and two circular linkage pieces 13 are installed on the linkage piece driving device, and the connection direction thereof is parallel to the straight line where the five connecting pins are located; the linkage piece driving device includes a limit groove 14, a push rod 20, a pair of U-shaped brackets 21 and an electromagnetic driver 24; the linkage piece 13 is installed on the push rod 20 through the limit groove 14 with a built-in spring, and the push rod 20 is limited by a pair of U-shaped brackets 21 installed on the bottom plate to limit the movement in the up and down directions, one end of the push rod is limited in the slide groove of the limit bracket 21 on the left side through a pin shaft, and the other end is connected to the electromagnetic driver 24 and can slide axially;

[0031] The vacuum interrupter module comprises four vacuum interrupters K0, Ke, Km and K1 installed in parallel, and an I-shaped support bar 32 and a four-position bracket 31 for fixing the vacuum interrupters.

[0032] Figure 3 The switch operating mechanism is shown, including a drive device and a limit linkage assembly.

[0033] Figure 4 The driving device is shown, including a fixed frame 41, stationary armatures 42, 43, a movable armature 44, an electromagnetic coil 40, a push rod 45, a pair of push assemblies and a U-shaped limit movable member 53 as a driven member. The limit linkage assembly includes a U-shaped limit movable member 53, a U-shaped support fixed member 60, and four tongue movable members 65. Among them, the fixed frame, the stationary armature, the movable armature, and the electromagnetic coil constitute an electromagnetic mechanism.

[0034] The fixing frame 41 is fixed on the bottom plate 100, and the stationary armatures 42 and 43 are symmetrically arranged at both ends of the fixing frame 41. The movable armature 44 is installed on the fixing frame and slides with the fixing frame, and can move between the two stationary armatures. The push rod 45 transversely penetrates the movable armature 44 and the stationary armatures 42 and 43. The push rod 45 is fixed to the movable armature 44 and slides with the stationary armature. The electromagnetic coil 40 is divided into two groups, left and right, and is arranged on the fixing frame. The left electromagnetic coil 401 partially covers the left stationary armature 42 and the moving armature 44, and the right electromagnetic coil 402 partially covers the right stationary armature 43 and the moving armature 44.

[0035] Specifically, Figure 5 and Figure 6As shown, the fixed frame 41 of the electromagnetic mechanism is composed of a pair of fixed frames 411 and a plurality of stacked silicon steel sheets 413; the fixed frames 411 are rectangular rings, arranged at intervals up and down, and are vertically fixed to the bottom plate 100 by four L-shaped brackets 415, and the silicon steel sheets 413 are clamped between the fixed frames 411; the silicon steel sheets 413 are in the shape of a mountain, and two groups of stacked 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 upward, and the opening of the lower silicon steel sheet group faces downward, and there is a space between the upper and lower silicon steel sheet groups, and the movable armature 44 and the static armatures 42, 43 are arranged in the space. The electromagnetic coils 401 and 402 (in Figure 4 The overall outline of the coil is shown in Figure 5 , Figure 6 The skeleton for winding electromagnetic coils is respectively arranged in two rectangular spaces formed by two silicon steel sheet groups opposite to each other in a mountain shape.

[0036] The push assembly is symmetrically arranged at both ends of the push rod 45, including a push block 46 and a push block 48 on the left side, and a push block 47 and a push block 49 on the right side. The push blocks 46 and 47 have transverse through holes, and the two push blocks are sleeved on the sections of the two ends of the push rod 45 extending out of the electromagnetic mechanism, and slide with the push rod 45. Nuts are provided at both ends of the push rod to block the push blocks; longitudinal slide slots are provided at the lower parts of the push blocks 46 and 47, and push block tongues 51 and 52 are slidable in the slide slots, respectively, and springs are provided at the bottom of the slide slots; the push block tongues are rectangular columns, and the lower end of the left push block tongue 51 has a chamfered inclined surface on the left, and the lower end of the right push block tongue 52 has a chamfered inclined surface on the right. A pair of return springs are sleeved on the push rod 45, and are respectively located between the two push blocks and the electromagnetic mechanism. The top block is fixed on the bottom plate. The left top block 48 can stop the push block 46 from moving to the left, and the right top block 49 can stop the push block 47 from moving to the right. The top blocks 48 and 49 have protruding inclined surfaces at the bottom, which are parallel to the chamfered inclined surfaces of the push block tongues on the same side and can slide together. The upper ends of the U-shaped limit movable member 53 have multiple tooth grooves matching the push block tongues. The width of the tooth grooves is equal to the width of the push block tongues 51 and 52, and the spacing between the tooth grooves is equal to the single movement stroke of the push rod 45. The distance between the surfaces of the top blocks 48 and 49 that contact the push blocks is equal to the distance between the surfaces of the nuts at both ends of the push rod 45 that contact the push blocks.

[0037] The structure of the U-shaped limit movable member 53 is as follows: Figure 7 As shown in the front view and side view, it is a U-shaped double-layer structure, and the four tongue moving members 65 are installed in the empty slot space in the middle; the structure of the U-shaped support fixed member 60 is as shown in Figure 8 As shown in the three-view drawing, the side view is also a U-shaped double-layer structure, and the empty slot space in the middle can just accommodate the thickness of the U-shaped limit movable member 53; the above three components form a five-layer stacked structure that is symmetrical up and down, and four pins penetrate and connect them.

[0038] In the circuit connection, refer to Fig. 9 , the first connection pin 1 is connected to the fifth connection pin 5 and the lower end tap X3 of the voltage regulating coil L2 in the voltage regulating winding, the second connection pin 2 is connected to the fixed end of the vacuum interrupter Km, the third connection pin 3 is connected to the upper end tap X1 of the voltage regulating coil L1 in the voltage regulating winding, the fourth connection pin 4 is connected to the lower end tap of the main winding L and the fixed end of the vacuum interrupter Ke, and the tap X2 between the voltage regulating coils L1 and L2 in the voltage regulating winding is connected to the fixed end of the vacuum interrupter K1. The upper end tap of the main winding L is connected to the input end A of the entire 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 in protecting the circuit during the switch switching. In the transition switching unit, the moving end of the vacuum interrupter K0 is connected to the moving end of the vacuum interrupter Km, Ke and the output end X0 of the entire voltage regulating switch circuit, and the fixed end of the vacuum interrupter K0 is connected to the moving end of the vacuum interrupter K1.

[0039] Combination Fig. 9 , the correspondence between the polarity switch Kj, the combination state of each on-off switch and each gear position of the voltage regulating circuit is as follows:

[0040] The first linkage structure is that the linkage piece 11 connects the connection pin 1 and the connection pin 2 at the same time, and the linkage piece 12 connects the connection pin 3 and the connection pin 4 at the same time. The switch states of each gear are as follows

[0041] Level 3: Ke is closed, K0 is disconnected, L1 and L2 are not connected to the circuit, and the rated voltage is used for power supply;

[0042] Fourth gear: Ke is disconnected, K1 is closed, K0 is closed, and L1 is connected to the circuit;

[0043] Level 5: Ke is disconnected, Km is closed, K0 is disconnected, L1 and L2 are connected to the circuit;

[0044] The second linkage structure is that the linkage piece 11 connects the connection pin 2 and the connection pin 3 at the same time, and the linkage piece 12 connects the connection pin 4 and the connection pin 5 at the same time. The switch states of each gear are as follows

[0045] Level 3: Ke is closed, K0 is disconnected, L1 and L2 are not connected to the circuit, and the rated voltage is used for power supply;

[0046] Second gear: Ke is disconnected, K1 is closed, K0 is closed, and L2 is reversely connected to the circuit;

[0047] First gear: Ke is disconnected, Km is closed, K0 is disconnected, L2 and L1 are reversely connected to the circuit;

[0048] The following takes the adjustment of five gears to four gears as an example to illustrate how the switch operating mechanism described in this embodiment can achieve unified operation of the vacuum interrupter modules.

[0049] like Figure 1 As shown in the figure, the polarity switch is in the first linkage state, and the U-shaped limit movable member is at the far left, and the state of the tongue movable member is limited by the limit sliding groove 54 of the former: corresponding to the contraction of Km, corresponding to the extension of K0, K1, Ke. That is, the figure corresponds to the state of Km being closed and K0, K1, Ke being disconnected, so the voltage regulating switch shown in the figure is in the fifth gear with the highest boost.

[0050] The right electromagnetic coil 402 is energized, and due to the magnetization effect, the right static armature 43 attracts the movable armature 44 to move rightward, and the push rod 45 also moves rightward accordingly, and the nut at the left end drives the push block 46 to move rightward, and the moving distance is equal to the spacing between the tooth grooves 58 above the U-shaped limit moving member 53, which is half the horizontal length of a single limit sliding groove 54. In the initial state, the lower end of the push block tongue 51 is chamfered with the inclined surface of the top block 48 and is confined in the sliding groove hole of the push block 46. When the push rod moves to the right, the push block tongue is pushed downward by the built-in spring to extend to Figure 2 The middle dotted line position fits with the tooth groove 58, thereby driving the U-shaped limit movable member 53 to move to the right. During this process, the reset spring between the static armature 42 and the push block 46 on the push rod 45 is compressed; when the limit movable member 53 reaches the predetermined position, the electromagnetic coil 402 is powered off, and the push rod 45 returns to the central position due to the elastic force of the reset spring, and the chamfered inclined surface of the push block tongue 51 collides with the edge of the tooth groove 58, and is forced to retract into the slide slot hole of the push block 46 like a latch door lock, while the limit movable member still stays in the position after being pushed due to friction. The distance that the U-shaped limit movable member 53 moves to the right is half the length of the limit slide slot 54, so after the movement, the four tongue movable members 65 are respectively in the middle position of the limit slide slot 54.

[0051] Comparison Figure 7 From the specific shape of each limit slot, it can be known that after the slot 54a is displaced, the corresponding pin shaft changes from the low position at the right end to the high position in the middle, and the corresponding vacuum interrupter Km is disconnected; after the slot 54b is displaced, the corresponding pin shaft changes from the high position at the right end to the low position in the middle, and the corresponding vacuum interrupter K0 is closed; after the slot 54c is displaced, the corresponding pin shaft changes from the high position at the right end to the low position in the middle, and the corresponding vacuum interrupter K1 is closed; before and after the slot 54d is displaced, the upper and lower positions of the pin shaft remain unchanged, and the corresponding vacuum interrupter Ke remains disconnected. Thus, the voltage regulating circuit state changes from the fifth gear to the fourth gear.

[0052] If the electromagnetic coil 402 is energized once again, the above process is repeated, the U-shaped limit movable member 53 moves from the middle position to the rightmost position, and the four pins and their associated tongue movable members 65 respectively move from the middle position of the limit sliding slot 54 to the leftmost end. The pin corresponding to the sliding slot 54a does not move, and Km remains disconnected; the pin corresponding to the sliding slot 54b changes from the low position to the high position, and K0 is disconnected; the pin corresponding to the sliding slot 54c changes from the low position to the high position, and K1 is disconnected; the pin corresponding to the sliding slot 54d changes from the high position to the low position, and Ke is disconnected. Thus, the voltage regulating circuit changes from four gears to three gears.

[0053] If reverse boost regulation is required, the left electromagnetic coil 401 is energized, and the push block 46 and the push block tongue 52 will drive the U-shaped limit movable member 53 to move leftward in complete symmetry, and the limit linkage assembly will perform the reverse motion as above to complete the switch from the third gear to the fourth gear, or from the fourth gear to the fifth gear.

[0054] It should be noted that the present invention is not limited to the above-mentioned specific implementation modes. A person skilled in the art can adopt various other specific implementation modes to implement the present invention based on the contents disclosed in the present invention, or any simple changes or modifications made to the design structure and concept of the present invention fall within the protection scope of the present invention.

Claims

1. A driving device for a transformer voltage regulating switch operating mechanism, characterized in that: It comprises an electromagnetic mechanism, a push rod, two sets of push assemblies and a driven part; the electromagnetic mechanism is fixedly arranged, the push rod penetrates the electromagnetic mechanism and can be driven bidirectionally in the axial direction; the two sets of push assemblies are symmetrically arranged at both ends of the push rod, the push assembly comprises a push block and a push block; the push block is arranged on the sections of the electromagnetic mechanism at both ends of the push rod, and is slidably matched with the push rod, and there are limit structures at both ends of the push rod for limiting the push block from sliding in the direction away from the electromagnetic mechanism; a push block tongue piece that can slide up and down is arranged in the push block, and an elastic member is arranged above the push block tongue piece, the lower end of which extends out of the push block and has a chamfered inclined surface on the side away from the electromagnetic mechanism; an elastic mechanism is arranged on the push rod between the push block and the electromagnetic mechanism for pushing the push block to slide in the direction away from the electromagnetic mechanism; the push block is fixedly arranged and can block the push block from moving in the direction away from the electromagnetic mechanism; the lower part of the push block has a protruding inclined surface, which is parallel to the chamfered inclined surface of the push block tongue piece on the same side and can slide in cooperation; the upper two ends of the driven part have a plurality of tooth grooves that match the push block tongue piece; The electromagnetic mechanism comprises a fixed frame, a pair of stationary armatures, a movable armature and an electromagnetic coil; the fixed frame is fixedly arranged, the stationary armatures are symmetrically arranged at both ends of the fixed frame, the movable armature is mounted on the fixed frame and slidably cooperates with the fixed frame, and can move between the two stationary armatures; the push rod penetrates the movable armature and the stationary armature, the push rod is fixed to the movable armature and slidably cooperates with the stationary armature; the electromagnetic coil is divided into two groups, left and right, and is arranged on the fixed frame; The fixing frame is composed of a pair of fixing frames and a plurality of stacked silicon steel sheets; the fixing frames are spaced up and down and fixed vertically, and the silicon steel sheets are sandwiched between the fixing frames; the silicon steel sheets are in a mountain shape, and two groups of stacked silicon steel sheets are arranged in the height direction, the opening of the lower silicon steel sheet group faces upward, and the opening of the upper silicon steel sheet group faces downward, and a space is left between the upper and lower silicon steel sheet groups, and the movable armature and the static armature are arranged in the space; The limiting structures at both ends of the push rod are nuts screwed on the ends of the push rod, and the push block has a transverse through hole so as to be sleeved on the push rod.

2. A driving device for a transformer voltage regulating switch operating mechanism according to claim 1, characterized in that: 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 sleeved on the push rod.

3. A driving device for a transformer voltage regulating switch operating mechanism according to claim 1, characterized in that: The distance between the two top blocks is equal to the distance between the limiting structures at both ends of the push rod.

4. A driving device for a transformer voltage regulating switch operating mechanism according to claim 1, characterized in that: The width of the tooth groove on the driven part is equal to the width of the tongue piece of the push block.

5. A driving device for a transformer voltage regulating switch operating mechanism according to claim 1, characterized in that: The tooth spacing of the driven part is equal to the distance of a single movement of the push rod.

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