CN213025868U - Non-excitation tapping switch operation structure - Google Patents

Abstract

The utility model discloses an off-circuit tapping switch operating structure, including mounting flange, wear the main shaft of dress on mounting flange, the box mechanism that links to each other with the main shaft upper end, its characterized in that: the box mechanism comprises a box body, a driving shaft and a display shaft, wherein the driving shaft and the display shaft are arranged in the box body, the driving shaft comprises an input shaft and an output shaft which is concentric with the input shaft, the output shaft is connected with a main shaft, the display shaft is connected with the input shaft or the output shaft through a display transmission mechanism, and a gear display mark is arranged on the display shaft. The utility model discloses simple structure uses reliable safety, through different gear ratios in the demonstration drive mechanism, realizes no matter how many degrees of input shaft rotation shift a switch that keeps off, shows that epaxial fender position word tablet changes a fixed angle all the time, makes all kinds of switch operating device's display system unified, has improved production efficiency, the quality control of also being convenient for, has improved the general performance of this device.

Description

Non-excitation tapping switch operation structure

Technical Field

The utility model relates to an off-circuit tapping switch technical field especially relates to an off-circuit tapping switch operating structure.

Background

The existing non-excitation tapping switch (hereinafter referred to as switch) has drum, cylinder, cage, squirrel cage, bar and other main structural types, because the mechanical motion mode when the moving contact of the switch body shifts gears and the mechanism rotation angle when the gears are switched are different, each type of switch has different operating mechanisms, different gears or different static contact position indexes of the same type of switch correspond to various operating mechanisms, and particularly after the switch has the requirements of remote gear display and electric locking protection function, the operating mechanisms are various in type and different in installation size, so that great inconvenience in manufacturing and application is brought to transformer and switch manufacturers.

In addition, the box body mechanism part of the existing operating mechanism of the non-excitation tapping switch is integrated with the mounting flange, and the output shaft of the mechanism and the main shaft are a whole shaft, so that the maintenance and the replacement of the mechanism are very inconvenient. Such as: when the oil leakage of the installation flange of the mechanism occurs, parts of the box body assembly part are required to be completely disassembled for maintenance. When the mechanism needs to be replaced, a part of transformer oil must be put in order to operate.

The Chinese patent office CN 22099032Y announces a tap switch operating mechanism, which mainly comprises an input shaft, an output shaft, a box cover and a connecting disc (mounting flange), so that the operating torque is reduced by times, and the operation is labor-saving. However, the following problems exist in the using process: a. the speed reduction transmission gear transmission chain is arranged, so that the output operation torque is multiplied, no operation hand feeling is caused when the mechanism is used for shifting when the torque of the off-circuit tap-changer body is small, and at the moment, a non-labor-saving operation mechanism needs to be additionally designed to meet the operation hand feeling requirement of the small torque switch. b. When the shaft core of the coupling disk (mounting flange) leaks oil, all the reduction gears in the box body mechanism need to be dismounted for maintenance, which brings inconvenience to maintenance. If the reduction gear is not reassembled according to the original direction after maintenance, the serious accident that the switch contact is unreliable due to incorrect switch gear can also be caused. c. When the mechanism needs to be replaced, the transformer oil in the transformer needs to be replaced after being placed below a connecting disc (mounting flange), so that the field maintenance workload and cost are increased in multiples, and the quality risk is increased. d. Without the electrical blocking protection function, the closing of the transformer when the mechanism is not in place can cause a serious accident of poor contact of the switch.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that not enough to above-mentioned prior art exists provides an operation reliably, the no excitation tapping switch operating structure that the commonality is good.

The utility model discloses the technical scheme who adopts does: the utility model provides an excitation-free tap switch operation structure, includes mounting flange, wears main shaft of dress on mounting flange, the box mechanism who links to each other with the main shaft upper end, its characterized in that: the box mechanism comprises a box body, a driving shaft and a display shaft, wherein the driving shaft and the display shaft are arranged in the box body, the driving shaft comprises an input shaft and an output shaft which is concentric with the input shaft, the output shaft is connected with a main shaft, the display shaft is connected with the input shaft or the output shaft through a display transmission mechanism, and a gear display mark is arranged on the display shaft.

According to the technical scheme, the display transmission mechanism comprises a display transmission shaft, a display transmission gear mechanism and a display sheave shifting fork mechanism, the display transmission shaft is arranged in the box body and connected with the input shaft or the output shaft through the gear transmission mechanism, and the display transmission shaft is connected with the display shaft through the display sheave shifting fork mechanism.

According to the technical scheme, the input shaft and the output shaft are mutually sleeved, the box body is also internally provided with the transmission shaft, and the transmission shaft is respectively connected with the input shaft and the output shaft through the first transmission mechanism and the second transmission mechanism.

According to the technical scheme, the gear shifting device is further provided with a positioning device, the positioning device comprises a positioning disk connected with the input shaft and an elastic positioning pin arranged on the box body, the elastic positioning pin is matched with a positioning groove in the positioning disk, and the elastic positioning pin is automatically clamped into the positioning groove under the action of the pressure of a spring during gear shifting, so that the gear of the switch is locked.

According to the technical scheme, the mechanical electric locking protection device is further arranged and comprises a microswitch configured with the positioning device.

According to the technical scheme, the remote gear display system is further arranged and comprises a display disc fixed on the box body and a supporting piece fixedly connected with a display sheave in the display sheave shifting fork mechanism, a gear signal static contact, a gear signal common contact and a plug-in terminal are arranged on the display disc, all contact signal points on the display disc are connected to the plug-in terminal, and gear signal moving contacts are respectively corresponding to the gear signal static contact and the gear signal common contact on the supporting piece.

According to the technical scheme, the remote electric locking protection system is further arranged and comprises a locking protection signal common contact and a locking protection signal static contact which are arranged on the display disc and a locking protection signal movable contact which is arranged on the supporting piece, wherein the locking protection signal movable contact is arranged corresponding to the locking protection signal common contact and the locking protection signal static contact.

According to the technical scheme, the gear signal static contact and the locking signal static contact correspond to the gear number one by one and are uniformly distributed in the circumferential direction, and the included angle of each contact is consistent with the index angle of the display grooved wheel.

According to the technical scheme, the mechanical electric locking protection device is further arranged and comprises a microswitch configured with the positioning device.

According to the technical scheme, the input shaft is connected with the output shaft and is in split design or integrated arrangement. .

According to the technical scheme, the mounting flange and the box body mechanism are designed in a split mode, and the box body mechanism is connected with the mounting flange through the fastening piece.

According to the technical scheme, the box body comprises a base fixed on the mounting flange and a supporting plate arranged opposite to the base and arranged above the base, the base and the supporting plate are used for supporting shafts which are parallel to each other, a rain cover is further configured on the box body, and a gear observation window is arranged on the rain cover.

According to the technical scheme, the side face of the box body is provided with the wrench fixing device for storing the wrench, and the wrench fixing device is arranged below the rainproof cover.

According to the technical scheme, two signal wire outlet holes are formed in the base.

According to the technical scheme, the box body is circular or non-circular.

According to the technical scheme, the input shaft is provided with a wrench position.

The utility model discloses the beneficial effect who gains does:

1. the utility model discloses simple structure uses reliable safety, through different gear ratios in the demonstration drive mechanism, realizes no matter how many degrees switches that shift one gear of input shaft rotation, shows that epaxial gear word tablet changes a fixed angle all the time, makes all kinds of switch operating device's display system unified, has improved production efficiency, the quality control of also being convenient for, has improved the general performance of this device.

2. The remote gear display system is arranged to provide an electric gear display signal for a gear display of a background control room, so that the function of remotely displaying the gear of a switch is realized;

3. the electric locking protection system is arranged and used for preventing the transformer from being switched on when the switch is not shifted or the transformer cannot be switched on when the switch is shifted, the transformer can only run when the switch is at a normal working position, the electric locking protection adopts a display disc and a microswitch double-loop protection, and the protection reliability is improved.

4. The transmission system provides power for switch gear shifting, different output angles (such as 360-degree rotation of an input shaft, 33-degree rotation of an output shaft, 42-degree rotation of the output shaft, 60-degree rotation of the output shaft, 360-degree rotation of the output shaft, 450-degree rotation of the output shaft and the like) are realized by setting different gear ratios, the gear shifting requirements of various switches can be met, and labor-saving transmission is realized.

5. The box body mechanism part and the mounting flange part are of split structures, so that the oil leakage maintenance of the mounting flange and the integral replacement of the box body mechanism are facilitated.

6. The box body mechanism adopts double wire outlet holes and is matched with two cable heads, so that a remote gear display signal wire and an electric locking protection signal wire are respectively led out from the two cable heads, and mutual interference among signals can not occur.

7. The utility model discloses gather transmission, gear instruction, long-range gear demonstration, electric shutting protection, the general type operating device who fixes a position the modularization combination as an organic whole, with the transmission laborsaving, gear demonstration and multiple input and output angle's mechanism fuse to a box mechanism in, realize that appearance, mounting dimension are unified, simultaneously, can select different modules to make up according to operating condition, general type is strong.

Drawings

Fig. 1 is a front view of the appearance of embodiment 1 of the present invention.

Fig. 2 is a view B-B of fig. 1.

Fig. 3 is a main sectional view of embodiment 1 of the present invention.

Fig. 4 is a front cross-sectional view of a positioning device according to an embodiment of the present invention.

Fig. 5 is a top view (without a support plate) of a positioning device according to an embodiment of the present invention.

Fig. 6 is a view from C-C of fig. 5 (with a support plate).

Fig. 7 is a front sectional view of embodiment 2 of the present invention.

Fig. 8 is a front sectional view of embodiment 3 of the present invention.

Fig. 9 is a front view of a display panel according to embodiment 3 of the present invention.

Fig. 10 is a front sectional view of a support member according to embodiment 3 of the present invention.

Fig. 11 is an external view of a support member according to embodiment 3 of the present invention.

Fig. 12 is a front sectional view of embodiment 4 of the present invention.

Fig. 13 is a front view of the outer shape of embodiment 5 of the present invention.

Fig. 14 is a view a-a of fig. 13.

Fig. 15 is a front sectional view of embodiment 5 of the present invention.

Fig. 16 is a front sectional view of embodiment 6 of the present invention.

Fig. 17 is a front sectional view of embodiment 7 of the present invention.

Fig. 18 is a front sectional view of embodiment 8 of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Example 1:

as shown in fig. 1-3, the present embodiment provides an operation structure of an off-circuit tap changer, including a mounting flange 8, a main shaft 7 penetrating the mounting flange 8, and a box mechanism coupled to the upper end of the main shaft 7, where the box mechanism includes a box, a driving shaft installed in the box, and a display shaft 15, the box includes a base 3 fixed to the mounting flange 8 by a bolt 6, and a supporting plate 18 disposed opposite to the base and above the base, where the base 3 and the supporting plate 18 are used to support shafts parallel to each other, the box is further configured with a rain cover 2, and a gear observation window 1 is disposed on the rain cover.

The driving shaft comprises an input shaft 14 and an output shaft 5 which is concentric with the input shaft, the output shaft 5 is connected with the main shaft 7, the display shaft 15 is connected with the input shaft or the output shaft through a display transmission mechanism, and a gear display mark is arranged on the display shaft. In the embodiment, the input shaft 14 is directly connected with the output shaft 5 to form a whole shaft, so that a mechanism with the input and output of 1: 1 (for example, the input is 60 degrees, the output is 360 degrees, and the like, and the output is 60 degrees, the output is 360 degrees, and the like) is realized. The display shaft 15 and the input shaft 14 are connected by a display transmission mechanism for example. For better understanding of the present embodiment, the following takes an example of the input rotation of 60 ° and the output rotation of 60 ° for shifting, and the configuration of the present embodiment is as shown in fig. 1 and 2 (non-circular casing mechanism).

The display transmission mechanism comprises a display transmission shaft 16, a display gear transmission mechanism and a display sheave shifting fork mechanism which are arranged in the box body, the display transmission shaft is connected with the input shaft or the output shaft through the display gear transmission mechanism, and the display transmission shaft is connected with the display shaft through the display sheave shifting fork mechanism. Specifically, as shown in the figure, the display gear transmission mechanism comprises a display gear 29 connected with the input shaft 14 and a display gear shifting fork 30 sleeved on the display transmission shaft 16, the display gear shifting fork mechanism comprises the display gear shifting fork 30 and a display groove wheel 31 arranged on the display shaft, the display gear shifting fork 30 sets the gear and the shifting fork into an integrated structure, the gear meshed with the display gear 29 is arranged below the gear, and the shifting fork matched with the display groove wheel 31 is arranged above the gear.

As shown in fig. 4-6, the present embodiment further comprises a positioning device for locking the switch gear, the positioning device comprises a positioning plate 24 connected to the input shaft 14, a force applying mechanism installed on the box body, an eccentric plate 40 connected to the output end of the force applying mechanism, and a positioning pin 25 connected to the eccentric plate via a shaft pin 41, the positioning pin is installed in a sliding slot of the supporting seat below the supporting plate, the positioning pin 25 is disposed corresponding to a positioning slot 44 on the positioning plate and can enter or exit the positioning slot 44 of the positioning plate under the action of the force applying mechanism. The positioning groove 44 is a square positioning groove, and the end of the positioning pin matched with the positioning groove is a square end.

In the present embodiment, the urging mechanism includes a positioning handle 20 provided on the casing, and the positioning handle 20 is provided above the support plate 18 and connected to an eccentric disc 40 provided below the support plate via a rotary shaft 43 provided on the support plate.

The embodiment is also provided with a limiting mechanism for limiting the positioning pin when the positioning pin enters or exits the positioning groove. The limiting mechanism can be used for limiting the positioning handle 20 and also can be used for limiting the eccentric disc and also can be used for limiting the positioning pin, and the embodiment describes the limitation of the positioning pin. As shown in fig. 5, the limiting mechanism includes an elastic limiting member disposed in the box body and two limiting slots 47 disposed opposite to the elastic limiting member and disposed on the positioning pin, and the elastic limiting member enters the other limiting slot from one limiting slot in the process that the positioning pin enters or exits the positioning slot. The elastic limiting part comprises a spring 46 arranged in a mounting groove 45 of a supporting seat 48 below the box body supporting plate and a steel ball 42 connected with the spring, and the steel ball 42 and a limiting clamping groove 47 are arranged correspondingly. When the gear shifting is needed, the positioning handle 20 is rotated, the positioning handle 20 is withdrawn from the positioning groove 44, and the input shaft rotates to realize the gear shifting action of the non-excitation tapping switch. Because the positioning pin 25 is connected with the positioning handle 20 through the eccentric disc 40, the positioning pin 25 makes a linear motion along the supporting seat 48 groove in the withdrawing process, so that the elastic limiting piece is easily withdrawn from one limiting clamping groove 47 (the right limiting clamping groove), and after the positioning pin 25 is completely withdrawn, the elastic limiting piece enters the other limiting clamping groove 47 (the left limiting clamping groove) to realize the limiting of the positioning pin 25. After the input shaft realizes the shifting action, the positioning handle 20 is rotated, the positioning pin 25 is clamped into the positioning groove 44 again to realize the positioning of the tap switch gear, and meanwhile, the elastic limiting piece enters the limiting clamping groove 47 on the left again, so that the limiting of the positioning pin 25 is realized. The positioning device has the advantages of high strength and reliable positioning.

In this embodiment, the operating mechanism is of a split structure, and is formed by combining a box mechanism and a mounting flange (that is, the box mechanism and the mounting flange are two independent components), and are connected into a whole through bolts 6. The split structure facilitates maintenance and replacement of the operating mechanism.

The mounting flange part mainly comprises a main shaft 7, a mounting flange 8 and the like, a welding flange 9 is welded on a transformer case cover 10, the mounting flange 8 is fixed on the welding flange 9 through bolts, and the lower end of the main shaft 7 of the mounting flange is connected with the switch body to provide power for shifting a switch moving contact. The upper end of the main shaft 7 is connected with the output shaft 5 of the box body, and the main shaft 7 synchronously rotates along with the output shaft 5.

The box body mechanism is uniform in appearance and size, installation on mounting flanges of various switches such as drum-shaped switches, cylindrical switches, cage-shaped switches, squirrel cage-shaped switches and bar-shaped switches is achieved, and universality of the operating mechanism is improved. The housing of the housing mechanism may be of circular or non-circular configuration (circular configuration is used in this embodiment).

The upper flat portion of the input shaft 14 is adapted to be connected to a wrench 19, which wrench 19 powers the input shaft 14. The wrench is fixed in a spring clip (i.e. wrench fixing device) on the side of the box body when not in use.

When power is needed to be supplied for shifting the switch, the working process is as follows: the input shaft 14 is rotated by a wrench, the input shaft 14 rotates 60 degrees to drive the main shaft 7 to rotate 60 degrees (the main shaft 7 is connected with the switch body, and the switch body is omitted in the figure), and the main shaft 7 drives the switch body to shift gears. Similarly, the input shaft 14 rotates 60 degrees to drive the display gear 29 to rotate, the display gear 29 drives the display gear shifting fork 30 to rotate 360 degrees, the display gear shifting fork 30 shifts the display grooved wheel 31 to rotate 36 degrees, the display grooved wheel 31 drives the display shaft 15 to rotate 36 degrees, the display shaft 15 drives the gear number plate 13 to rotate 36 degrees, the gear number plate 13 is provided with a gear number every 36 degrees, and the switch gear number is observed from the observation hole of the support plate 18. The display gear and the display gear shifting fork are matched through different gear ratios, the display gear shifting fork only rotates for one circle when the input shaft rotates for 360 degrees, 450 degrees, 42 degrees, 33 degrees and the like, and the display groove wheel and the gear number plate always rotate for a fixed angle, so that display systems of various switch operating mechanisms are unified, the production efficiency is improved, and the quality control is facilitated. Meanwhile, the elastic positioning pin 25 is automatically clamped into the positioning groove under the action of the spring pressure, and the switch gear locking is realized. The gear position is known through a display window on the support plate 18.

Example 2:

as shown in fig. 7, embodiment 2 is substantially the same in structure as embodiment 1 except that: and an electric appliance locking protection system is also arranged. The electric locking protection system has the function of preventing the transformer from being switched on when the switch is not shifted or the transformer from being switched on when the switch is shifted, and ensuring that the transformer can only run when the switch is at a normal working position. The electric appliance locking protection system of the embodiment is a microswitch matched with a positioning pin 25 of the positioning device, when the positioning pin 25 is unlocked (pulled out from a positioning groove), the microswitch 26 is collided to act, at the moment, NC is opened in a circuit, and NO is conducted. The signal line of the microswitch 26 is connected in series to a closing loop and a breaker of the transformer, so that the function that the transformer can be closed when the switch is shifted in place and can not be closed when the switch is not shifted in place is realized.

Example 3:

as shown in fig. 8, the present embodiment has substantially the same structure as embodiment 1, except that: an operating mechanism with a remote gear display function is also arranged.

Specifically, a remote gear display system is further arranged in the operating mechanism and provides an electric gear display signal for a gear display of a background control room, and the function of remotely displaying the gear of the switch is achieved. As shown in fig. 9-11, the remote gear display system includes a display panel 21 fixed on the support plate 18, and a support 32 fixedly connected to the display grooved wheel 31, where a plurality of gear signal stationary contacts 37, a gear signal common contact 36, and a plug terminal 33 are disposed on the display panel 21, the tap changer generally includes three, five, seven, and nine gears, in this embodiment, a ninth gear is taken as an example, that is, 9 gear signal stationary contacts are disposed at intervals on the periphery of the gear signal common contact 36 and correspondingly connected to each gear signal terminal, the gear signal common contact 36 is an arc structure that is not closed, and is led out through a lock protection signal terminal, and the contact signal points on the display panel are all connected to the plug terminal 33 through signal terminals.

As shown in fig. 9, a common gear signal contact 36 and a one-to-one corresponding stationary gear signal contact 37 are disposed on the display panel 21 (i.e., a gear signal contact is disposed in one gear), an included angle between adjacent stationary gear signal contacts is 36 ° consistent with a dividing angle of the display grooved pulley 31, the movable gear signal contacts are mounted in the support member 32, and the movable gear signal contacts 39 are two parallel and series movable contact structures and are respectively abutted to the common gear signal contact 36 and the one-to-one corresponding stationary gear signal contact 37. The support member 32 is rigidly fixed to the display sheave 31 and rotates synchronously. When the display grooved wheel rotates by 36 degrees, the supporting piece 32 synchronously rotates by 36 degrees, the movable contact is displayed to rotate to an adjacent gear from the original gear, and the electric gear signal conversion is realized. The contact signals on the display panel are all connected to the plug-in terminal 33 and then connected to the terminal strip 11 through the signal wire 12, the cable head 4 is arranged on the box body, the cable penetrates from one cable head 4 to be connected with the terminal strip 11, the other end of the cable is connected with the gear display of the controller (the cable and the gear display are omitted in the drawing), and remote gear display is achieved. The electrical principle and description of the remote gear display system are shown in table 1. The display panel 21 adopts a printed circuit board structure, and has the advantages of small volume and reliable contact.

TABLE 1

Example 4:

as shown in fig. 12, the present embodiment has substantially the same structure as embodiment 3, except that: an electrical lockout protection system is also provided.

The electric locking protection system has the function of preventing the transformer from being switched on when the switch is not shifted or the transformer from being switched on when the switch is shifted, and ensuring that the transformer can only run when the switch is at a normal working position. In order to improve the reliability, the electric locking protection system adopts two paths of electric locking protection. One path of the protection system is arranged on the display panel 21, is arranged together with the remote gear indication system and is combined with the remote gear indication system, and comprises a protection signal common contact 35, a protection signal static contact 34 (namely, a gear is provided with a gear signal static contact) which corresponds to the protection signal common contact one by one and a locking protection signal movable contact 38 which is arranged on a supporting piece, wherein the locking protection signal common contact 35 and the gear signal common contact 36 are arranged concentrically and are also of an unclosed arc-shaped structure and are led out through a locking protection signal terminal, nine locking protection signal static contacts 34 are arranged on the inner periphery of the locking protection signal common contact at uniform intervals and are arranged in series, and are led out through the locking signal terminal. The supporting member 32 is provided with a blocking protection signal moving contact 38, and the blocking protection signal moving contact 38 has two parallel moving contact structures connected in series and is abutted with the protection signal common contact 35 and the protection signal static contact 34. The supporting member 32 and the display grooved wheel 31 rotate synchronously, so that the protective signal contact is switched on and off to perform locking protection, namely, terminals 11 and 12 in the table 1 are in a connected state when the supporting member 32 is in place, and are in an off state when the supporting member is not in place. The other path of the electric locking protection system is a microswitch matched with a positioning pin 25 of the positioning device, when the positioning pin 25 is unlocked (pulled out of the positioning groove), the microswitch 26 is collided to act, at the moment, NC in the table 1 is opened, and NO is conducted. After the input shaft realizes the gear shifting action, the positioning pin 3 is clamped into the positioning groove again to realize the positioning of the tap switch gear, and the microswitch 7 is manually reset.

In this embodiment, two signal line outlet holes 4 are arranged on the base, so that the remote gear display signal and the electric locking protection signal line are respectively led out without mutual signal interference. The first path of electrical locking protection system protection terminals 11 and 12 in the table 1 are connected with a cable, the second path of electrical locking protection system protection terminals COM and NC or NO are connected with the cable, penetrate out of the other signal cable head 4 and are connected in series to a closing loop and a breaker of a transformer, and the functions that the transformer can be closed when a switch is shifted in place and cannot be closed when the switch is not shifted in place are achieved.

When the operating mechanism does not need the remote display and the electric locking protection function or only needs one function, only the parts of the remote display system and the electric locking protection system or one function are not installed.

Example 5:

as shown in fig. 13, 14 and 15, the present embodiment has substantially the same structure as embodiment 1, except that: and a transmission system is also used for realizing labor-saving transmission. The transmission system includes at least one stage of gear transmission mechanism disposed in the box body, and the input shaft and the output shaft are connected through the gear transmission mechanism. As shown in the figure, the transmission system mainly comprises an input shaft 14, primary transmission gears 22 and 23, secondary transmission gears 27 and 28, a transmission shaft 17 and an output shaft 5. Namely, five parallel shafts 5, 14, 15, 16 and 17 are arranged on the box body base 3 and the supporting plate 18, wherein the input shaft 14 and the output shaft 5 are in a sleeve shaft structure, and the input shaft 14 and the transmission shaft 17 form a labor-saving structure to output gear shifting torque. The input shaft 14 and the shafts 15, 16 constitute a gear indication and remote gear display translation. Through the matching of different gear ratios of the two pairs of gears of the first-stage transmission gears 22 and 23 and the second-stage transmission gears 27 and 28, different output angles (such as 360-degree rotation of the input shaft, 33-degree rotation of the output shaft, 42-degree rotation of the output shaft, 60-degree rotation of the output shaft, 360-degree rotation of the output shaft, 450-degree rotation of the output shaft and the like) are realized, and the gear shifting requirements of various.

In the following, taking the example that the input shaft rotates 360 degrees and the output shaft rotates 60 degrees, the transmission structure principle is as follows: the input shaft 14 is rotated by the wrench 19, the input shaft 14 rotates 360 degrees to drive the first-stage driving gear 22 to rotate, the first-stage driving gear drives the first-stage driven gear 23 to rotate, the transmission shaft 17 and the first-stage driven gear 23 are rigidly connected and synchronously rotate to drive the second-stage driving gear 27 to rotate, the second-stage driving gear drives the second-stage driven gear 28 to rotate, the second-stage driven gear 28 drives the output shaft 5 to rotate 60 degrees, the output shaft 5 drives the main shaft 7 to rotate 60 degrees, and the main shaft 7 drives the switch body to shift gears (the main shaft 7 is connected with the. The secondary driven gear 28 can be designed into an incomplete gear structure, so that the mechanism has a limit position mechanical limit function.

In the embodiment, the box body mechanism adopts a uniform shape and size, is mounted on mounting flanges of various switches such as drum-shaped switches, cylindrical switches, cage-shaped switches, squirrel cage-shaped switches and bar-shaped switches, and improves the universality of the operating mechanism. The housing of the housing mechanism may be of circular or non-circular configuration (circular configuration is used in this embodiment).

Example 6:

as shown in fig. 16, this embodiment has substantially the same structure as embodiment 5, except that: an electrical lockout protection system is also provided. The structure of the electric locking protection system and the electric locking protection system in embodiment 2, that is, the structure of the microswitch 26 configured with the positioning device, are not described in detail herein. .

Example 7:

as shown in fig. 17, this embodiment has substantially the same structure as embodiment 6, except that: and a remote gear display system is also arranged, the structure of the remote gear display system is the same as that of the remote gear display system in the embodiment 3, and the details are not repeated.

Example 8:

as shown in fig. 18, the present embodiment has substantially the same structure as embodiment 6, except that: the gear display system with remote display is also provided with an electric locking protection system, the structure of the gear display system is the same as that of the gear display system in embodiment 3, and the structure of the gear display system is the same as that of the gear display system in embodiment 4, which is not repeated herein.

Claims (16)

1. The utility model provides an excitation-free tap switch operation structure, includes mounting flange, wears main shaft of dress on mounting flange, the box mechanism who links to each other with the main shaft upper end, its characterized in that: the box mechanism comprises a box body, an input shaft arranged in the box body, an output shaft arranged concentrically with the input shaft, and a display shaft, wherein the output shaft is connected with the main shaft, the display shaft is connected with the input shaft through a display transmission mechanism, and a gear display mark is arranged on the display shaft.

2. The no-excitation tap changer operating structure of claim 1, wherein: the display transmission mechanism comprises a display transmission shaft, a display gear transmission mechanism and a display sheave shifting fork mechanism which are arranged in the box body, the display transmission shaft is connected with the input shaft or the output shaft through the display gear transmission mechanism, and the display transmission shaft is connected with the display shaft through the display sheave shifting fork mechanism.

3. The no-excitation tap changer operating structure of claim 2, wherein: the input shaft and the output shaft are mutually sleeved, at least one stage of gear transmission mechanism is further arranged in the box body, and the input shaft and the output shaft are connected through the gear transmission mechanism.

4. The no-excitation tap changer operating structure of claim 1 or 3, wherein: the gear shifting device is characterized by further comprising a positioning device, wherein the positioning device comprises a positioning disc connected with the input shaft and an elastic positioning pin arranged on the box body, the elastic positioning pin is matched with a positioning groove in the positioning disc, and the elastic positioning pin is automatically clamped into the positioning groove under the action of spring pressure during gear shifting, so that the gear locking of the switch is realized.

5. The no-excitation tap changer operating structure of claim 4, wherein: a microswitch configured with the positioning device is also arranged.

6. The no-excitation tap changer operating structure of claim 4, wherein: the remote gear display system comprises a display disc fixed on the box body and a supporting piece fixedly connected with a display sheave in the display sheave shifting fork mechanism, a gear signal stationary contact, a gear signal common contact and a plug-in terminal are arranged on the display disc, all contact signal points on the display disc are connected to the plug-in terminal, and a gear signal movable contact corresponding to the gear signal stationary contact and the gear signal common contact on the supporting piece is abutted to the gear signal movable contact and the gear signal movable contact.

7. The no-excitation tap changer operating structure of claim 5, wherein: the remote electric locking protection system is further arranged and comprises a locking protection signal common contact and a locking protection signal static contact which are arranged on the display disc and a locking protection signal movable contact which is arranged on the supporting piece, wherein the locking protection signal movable contact is arranged corresponding to the locking protection signal common contact and the locking protection signal static contact.

8. The no-excitation tap changer operating structure of claim 6, wherein: the gear signal static contacts and the locking signal static contacts correspond to the gear positions one by one and are uniformly distributed in the circumferential direction, and the included angle of each contact is consistent with the index angle of the display grooved wheel.

9. The no-excitation tap changer operating structure of claim 6, wherein: a microswitch configured with the positioning device is also arranged.

10. The no-excitation tap changer operating structure of claim 2, wherein: the input shaft is connected with the output shaft and is in split design or integrated arrangement.

11. The no-excitation tap changer operating structure of claim 1 or 2, characterized in that: the mounting flange and the box body mechanism are designed in a split mode, and the box body mechanism is connected with the mounting flange through a fastening piece.

12. The no-excitation tap changer operating structure of claim 1 or 2, characterized in that: the box is including fixing the base on mounting flange, setting up and installing the backup pad in the base top with the base is relative, base and backup pad are used for supporting each axle that is parallel to each other, still dispose rain-proof cover on the box, be equipped with fender position observation window on rain-proof cover.

13. The no-excitation tap changer operating structure of claim 11, wherein: a wrench fixing device for storing a wrench is arranged below the rainproof cover on the side face of the box body.

14. The no-excitation tap changer operating structure of claim 6, wherein: two independent signal line outlet holes are arranged on the box body.

15. The no-excitation tap changer operating structure of claim 1 or 2, characterized in that: the box body is round or non-round.

16. The no-excitation tap changer operating structure of claim 1 or 2, characterized in that: and a wrench position is arranged on the input shaft.

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