CN213025867U - Positioning device for tap switch - Google Patents
Positioning device for tap switch Download PDFInfo
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- CN213025867U CN213025867U CN202021668571.XU CN202021668571U CN213025867U CN 213025867 U CN213025867 U CN 213025867U CN 202021668571 U CN202021668571 U CN 202021668571U CN 213025867 U CN213025867 U CN 213025867U
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- positioning
- tap changer
- groove
- positioning device
- pin
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Abstract
The utility model discloses a positioner for tapping switch, its characterized in that: the positioning device comprises a positioning disc connected with an input shaft, a force application mechanism arranged on a box body, an eccentric disc connected with the output end of the force application mechanism, and a positioning pin connected with the eccentric disc, wherein the positioning pin and the positioning groove on the positioning disc are correspondingly arranged and can enter or exit the positioning groove of the positioning disc under the action of the force application mechanism. The utility model discloses a set up the constant head tank on the positioning disk, the constant head tank is gone into to the locating pin under force applying mechanism's effect during the gear shift, realizes the locking of switch gear, and this positioner has intensity height, fixes a position reliable advantage.
Description
Technical Field
The utility model relates to a tapping switch technical field especially relates to a positioner for tapping switch.
Background
The transformer tapping switch is generally divided into a switch body and an operating mechanism, tapping of different gears is completed by moving gears through a moving contact in the switch body, the moving of the moving contact is realized by driving of the operating mechanism, and the moving contact is guaranteed to be in place and lock the gears through a positioning system of the operating mechanism. The positioning system of the existing operating mechanism is mostly positioned by screwing a positioning bolt into a positioning hole, and the positioning system is not provided with a mechanical lock and an electric locking device, so that misoperation cannot be effectively prevented. For example, in "a tap switch operating mechanism" published in chinese patent office CN 22099032Y, a positioning system of the tap switch operating mechanism is that a positioner under a hand wheel is configured with a positioning hole arranged on an end face of a box cover to realize positioning.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the not enough positioner that is used for the tapping switch that provides a reliable performance is good exists to above-mentioned prior art.
The utility model discloses the technical scheme who adopts does: a positioning device for a tap changer, characterized by: the positioning device comprises a positioning disc connected with an input shaft, a force application mechanism arranged on a box body, an eccentric disc connected with the output end of the force application mechanism, and a positioning pin connected with the eccentric disc, wherein the positioning pin and the positioning groove on the positioning disc are correspondingly arranged and can enter or exit the positioning groove of the positioning disc under the action of the force application mechanism.
According to the technical scheme, the positioning pin limiting mechanism is further arranged and used for limiting the positioning pin when the positioning pin enters or exits the positioning groove.
According to the technical scheme, the limiting mechanism comprises an elastic limiting part arranged in the box body and two limiting clamping grooves which are arranged opposite to the elastic limiting part and arranged on the positioning pin, and the elastic limiting part enters the other limiting clamping groove from one limiting clamping groove in the process that the positioning pin enters or exits from the positioning groove.
According to the technical scheme, the elastic limiting part comprises a spring arranged in the box body supporting plate and a steel ball connected with the spring, and the steel ball and the limiting clamping groove are arranged correspondingly.
According to the technical scheme, the other end of the box body, which is positioned at the positioning pin, is provided with the microswitch, and the positioning pin touches the microswitch when exiting from the positioning groove to realize the electric locking protection of the tapping switch.
According to the technical scheme, the force application mechanism comprises a positioning handle arranged on the box body, the positioning handle is arranged above the supporting plate and is connected with an eccentric disc arranged below the supporting plate through a rotating shaft arranged on the supporting plate in a penetrating mode.
According to the technical scheme, the tap switch is an off-circuit tap switch.
According to the technical scheme, the positioning groove is a square positioning groove, and the end of the positioning pin matched with the positioning groove is a square end.
According to the technical scheme, the positioning pin is arranged in the sliding groove of the supporting seat below the supporting plate.
The utility model discloses the beneficial effect who gains does:
1. the utility model discloses a set up the constant head tank on the positioning disk, the constant head tank is gone into to the locating pin under force applying mechanism's effect during the gear shift, realizes the locking of switch gear, and this positioner has intensity height, fixes a position reliable advantage.
2. The limit of the positioning pin is realized by arranging the limit mechanism, so that the reliability of opening and closing is further improved;
3. by arranging the microswitch, the transformer is prevented from being switched on when the switch is not in place during gear shifting or the transformer is prevented from being switched on during the gear shifting process of the switch, the transformer can be switched on only when the switch is in a normal working position or the transformer can not be switched on during the gear shifting process of the switch, and the reliability of the switch is further improved.
Drawings
Fig. 1 is a main sectional view provided in an embodiment of the present invention.
Fig. 2 is a top view (omitting the supporting plate) provided by the embodiment of the present invention.
Fig. 3 is a view from C-C of fig. 2 (with a support plate).
Fig. 4 is a schematic structural diagram of an operating mechanism of an off-circuit tap changer according to an embodiment of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1-3, the present embodiment provides a positioning device for a tap changer. In this embodiment, the positioning device is used in an operating structure of an off-circuit tap changer and is used for locking a switch gear. The positioning device comprises a positioning disc 3 connected with the input shaft 1, a force application mechanism arranged on the box body, an eccentric disc 6 connected with the output end of the force application mechanism, and a positioning pin 5 connected with the eccentric disc through a shaft pin 7, wherein the positioning pin 5 is arranged in a chute of a supporting seat 14 positioned below the supporting plate 2, and the positioning pin 5 is arranged corresponding to a positioning groove 4 on the positioning disc and can enter or exit the positioning groove 4 of the positioning disc under the action of the force application mechanism. The positioning groove 4 is a square positioning groove, and the end of the positioning pin matched with the positioning groove is a square end.
In this embodiment, the forcing mechanism comprises a positioning handle 10 mounted on the casing, the positioning handle 10 is mounted above the supporting plate 2, and is connected with the eccentric disc 6 mounted below the supporting plate through a rotating shaft 16 mounted on the supporting plate in a penetrating manner.
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 10 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. 2, the limiting mechanism includes an elastic limiting member installed in the supporting seat 14 and two limiting slots 11 opposite to the elastic limiting member and installed on the positioning pin, and the elastic limiting member enters from one limiting slot to the other limiting slot in the process that the positioning pin enters or exits from the positioning slot. The elastic limiting part comprises a spring 13 arranged in a mounting groove 15 of a supporting seat 14 below the box body supporting plate 2 and a steel ball 8 connected with the spring, and the steel ball 8 is arranged corresponding to the limiting clamping groove 11.
In this embodiment, a microswitch 12 is arranged at the other end of the positioning pin on the box body, and when the positioning pin 5 exits from the positioning slot 4, the microswitch 12 is touched to realize the electrical locking protection of the tap switch. The method has the functions of preventing the transformer from being switched on when the switch is not in place during gear shifting or preventing the transformer from being switched on during the gear shifting process of the switch, and ensuring that the transformer can be switched on only when the switch is in a normal working position or the transformer can not be switched on during the gear shifting process of the switch.
The utility model discloses a specific working process does: when the switch needs to be shifted, the positioning handle 10 is rotated clockwise, the positioning pin 5 is withdrawn from the positioning groove 4 to be unlocked, and the input shaft 1 rotates to realize the shifting action of the off-circuit tap-changer. Because the positioning pin 5 is connected with the positioning handle 10 through the eccentric disc, the positioning pin 5 makes linear motion along the groove of the supporting seat 14 in the withdrawing process, so that the elastic limiting part is easily withdrawn from one limiting clamping groove 11 (the right limiting clamping groove), the positioning pin 5 collides the micro switch 12 to act when unlocked (drawn out from the positioning groove) in the withdrawing process of the positioning pin 5, the signal wire of the micro switch 12 is connected in series to a closing loop of the transformer, and the functions that the transformer can be closed when the switch is shifted in place and cannot be closed when the switch is not shifted in place are realized. After the positioning pin 5 completely exits, the elastic limiting part enters another limiting clamping groove 11 (left limiting clamping groove) to limit the positioning pin 5. After the input shaft realizes the action of shifting gears, the positioning handle 10 is rotated, the positioning pin 5 is clamped into the positioning groove 4 again to realize the positioning of the tap switch gear, and meanwhile, the elastic limiting piece enters the limiting clamping groove 11 on the left again, so that the limiting of the positioning pin 5 is realized. A latch piece 9 is arranged above the supporting plate 2, a latch hole is arranged at the position corresponding to the positioning handle 10, and the positioning handle can be locked by a mechanical lock so as to prevent a nonprofessional person from operating the switch.
As shown in fig. 4, the positioning device of the present invention is used in an off-circuit tap changer operating structure. The present embodiment is described by taking an operation structure of an excitation-free tap changer as an example. The non-excitation tap switch operating structure comprises an installation flange 29, a main shaft 25 arranged on the installation flange 29 in a penetrating mode, and a box body mechanism connected with the upper end of the main shaft 25, wherein the box body mechanism comprises a box body, a driving shaft and a display shaft 19, the driving shaft and the display shaft are arranged in the box body, and a gear character plate 18 is arranged on the display shaft. The box includes through the base 30 of bolt fastening on mounting flange 29, set up and install the backup pad 20 in the base top relatively with the base, base 30 and backup pad 20 are used for supporting each axle that is parallel to each other, still dispose rain-proof cover on the box, be equipped with gear observation window on rain-proof cover.
The driving shaft comprises an input shaft 1 and an output shaft 26 which is concentric with the input shaft, the output shaft 26 is connected with a main shaft 25, the display shaft 19 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 1 is directly connected with the output shaft 26 to form a whole shaft, and a mechanism with the input and output of 1: 1 (for example, the input is 60 degrees and 360 degrees, and the output is 60 degrees and 360 degrees respectively) is realized. The display shaft 19 and the input shaft 1 are connected by a display transmission mechanism as an example. For better understanding of the present embodiment, the following example is an input rotation of 60 ° and an output rotation of 60 ° for shifting, and the configuration of the present embodiment is as shown in fig. 4 (non-circular casing mechanism).
The display transmission mechanism comprises a display transmission shaft 21, 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 24 connected with the input shaft 1 and a display gear shifting fork 23 sleeved on the display transmission shaft 21, the display gear shifting fork mechanism comprises the display gear shifting fork 23 and a display groove wheel 22 arranged on the display shaft, the display gear shifting fork 23 sets the gear and the shifting fork into an integrated structure, the lower part of the display gear shifting fork is a gear meshed with the display gear 24, and the upper part of the display gear shifting fork is a shifting fork matched with the display groove wheel 22.
In this embodiment, the operating mechanism is of a split structure, and is formed by combining a box mechanism and a mounting flange (i.e., the box mechanism and the mounting flange are two independent components), and are connected into a whole by bolts. The split structure facilitates maintenance and replacement of the operating mechanism.
The mounting flange part mainly comprises a main shaft 25, a mounting flange 29 and the like, a welding flange 28 is welded on a transformer box cover 27, the mounting flange 29 is fixed on the welding flange 28 through bolts, and the lower end of the main shaft 25 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 25 is connected with the output shaft 26 of the box body, and the main shaft 25 rotates synchronously with the output shaft 26.
When power is needed to be supplied for shifting the switch, the working process is as follows: when the input shaft 1 is rotated by a wrench, the input shaft 1 rotates 60 degrees to drive the main shaft 25 to rotate 60 degrees (the main shaft 25 is connected with the switch body, and the switch body is omitted in the figure), and the main shaft 25 drives the switch body to shift gears. Similarly, the input shaft 1 rotates by 60 degrees to drive the display gear 24 to rotate, the display gear 24 drives the display gear shifting fork 23 to rotate by 360 degrees, the display gear shifting fork 23 shifts the display grooved wheel 22 to rotate by 36 degrees, the display grooved wheel 22 drives the display shaft 19 to rotate by 36 degrees, the display shaft 19 drives the gear number plate 18 to rotate by 36 degrees, the gear number plate 18 sets a gear number every 36 degrees, and the switch gear number is observed from the observation hole of the support plate 20. 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 5 is automatically clamped into the positioning groove under the action of the spring pressure, and the switch gear locking is realized. The gear position can be known through the display window on the support plate 20.
Claims (9)
1. A positioning device for a tap changer, characterized by: the positioning device comprises a positioning disc connected with an input shaft, a force application mechanism arranged on a box body, an eccentric disc connected with the output end of the force application mechanism, and a positioning pin connected with the eccentric disc, wherein the positioning pin and the positioning groove on the positioning disc are correspondingly arranged and can enter or exit the positioning groove of the positioning disc under the action of the force application mechanism.
2. Positioning device for a tap changer according to claim 1, characterized in that: and the limiting mechanism is used for limiting the positioning pin when the positioning pin enters or exits the positioning groove.
3. Positioning device for a tap changer according to claim 2, characterized in that: the limiting mechanism comprises an elastic limiting part arranged in the box body and two limiting clamping grooves which are arranged opposite to the elastic limiting part and arranged on the positioning pin, and the elastic limiting part enters the other limiting clamping groove from one limiting clamping groove in the process that the positioning pin enters or exits from the positioning groove.
4. Positioning device for a tap changer according to claim 3, characterized in that: the elastic limiting part comprises a spring arranged in the box body supporting plate and a steel ball connected with the spring, and the steel ball and the limiting clamping groove are arranged correspondingly.
5. Positioning device for a tap changer according to claim 1 or 2, characterized in that: and the other end of the box body, which is positioned at the positioning pin, is provided with a microswitch, and the positioning pin touches the microswitch when exiting from the positioning groove to realize the electrical locking protection of the tapping switch.
6. Positioning device for a tap changer according to claim 1 or 2, characterized in that: the force application mechanism comprises a positioning handle arranged on the box body, the positioning handle is arranged above the supporting plate and is connected with an eccentric disc arranged below the supporting plate through a rotating shaft arranged on the supporting plate in a penetrating mode.
7. Positioning device for a tap changer according to claim 1 or 2, characterized in that: the tap changer is an off-circuit tap changer.
8. Positioning device for a tap changer according to claim 1 or 2, characterized in that: the locating slot is a square locating slot, and the end of the locating pin matched with the locating slot is a square end.
9. Positioning device for a tap changer according to claim 1 or 2, characterized in that: the locating pin is arranged in a sliding groove of the supporting seat below the supporting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021668571.XU CN213025867U (en) | 2020-08-12 | 2020-08-12 | Positioning device for tap switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021668571.XU CN213025867U (en) | 2020-08-12 | 2020-08-12 | Positioning device for tap switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213025867U true CN213025867U (en) | 2021-04-20 |
Family
ID=75466113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021668571.XU Active CN213025867U (en) | 2020-08-12 | 2020-08-12 | Positioning device for tap switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213025867U (en) |
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2020
- 2020-08-12 CN CN202021668571.XU patent/CN213025867U/en active Active
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