Tap changer control box with multiple independent signal outputs

Abstract

A tap changer control box with multiple independent signal outputs includes a housing, within which an action indicator shaft and a gear indicator shaft are inserted. The action indicator shaft is linked to the output shaft of the control box. A gear position pinion is mounted on the action indicator shaft, and a gear position gear is mounted on the gear position indicator shaft, capable of meshing with a single tooth of the pinion gear. A main signal gear is also mounted on the gear position indicator shaft, and a transmission gear is located at the bottom of the gear position indicator shaft. An extension signal shaft is also inserted into the housing, and an extension gear meshing with the transmission gear is mounted on the extension signal shaft, thus linking the extension signal shaft with the gear position indicator shaft. An extension signal output gear and an extension signal circuit board are mounted on the extension signal shaft. This invention is applicable to various types of tap changers. In addition to the main signal output, it can extend multiple independent signal outputs to meet the needs of tap changer electric mechanisms requiring multiple independent signals. It has the advantages of simple structure and convenient operation.

Description

Technical Field

[0001] This invention relates to a tap changer for a transformer, specifically a tap changer control box with multiple independent signal outputs. Background Technology

[0002] Transformer tap changers can adjust the tap position under load without interrupting power supply, placing the taps in the appropriate open positions. Therefore, tap changers require a control box, which is equipped with various mechanical and electrical components necessary for operation. Inside the control box, a position indicator shaft and position gear indicate the current position. For convenient remote control, a main signal gear and signal circuit board are also installed on the position indicator shaft for outputting the position signal. However, in practical use, a single main signal output is insufficient, thus necessitating a tap changer control box with multiple independent signal outputs.

[0003] Patent No. 201610121027.5, published on May 18, 2016, describes a tap changer control box comprising a control box and a drive box. It is connected to the tap changer via an output shaft and can controllably rotate the output shaft manually or electrically to change the tap changer's position. The tap changer control box consists of a housing, instrument panel, output shaft, manual handle, motor, pulleys, etc. The instrument panel features a large and small pointer, as well as an electric control switch. A communication signal connector is located on the lower side of the housing. Its pointer positioning is more precise than previous products; the rotating gear of its large pointer is significantly larger, and with the same module, the number of teeth has also increased considerably, allowing for more precise positioning of the rotation angle of the large pointer shaft. However, this tap changer control box only has one set of signal outputs and cannot meet the needs of multiple independent signal outputs. Summary of the Invention

[0004] The purpose of this invention is to address the deficiencies and shortcomings of the prior art by providing a tap changer control box with multiple independent signal outputs.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: The tap changer control box with multiple independent signal outputs includes a housing, inside which are inserted an action indicator shaft and a gear indicator shaft. The action indicator shaft is linked to the output shaft of the control box. A gear pinion is provided on the action indicator shaft, and a gear gear capable of meshing with a single tooth of the gear pinion is provided on the gear indicator shaft. A main signal gear is also provided on the gear indicator shaft, and a transmission gear is provided at the bottom of the gear indicator shaft. An extension signal shaft is also inserted through the housing, and an extension gear meshing with the transmission gear is provided on the extension signal shaft, thus linking the extension signal shaft with the gear indicator shaft. An extension signal output gear and an extension signal circuit board are mounted on the extension signal shaft.

[0006] The bottom of the extended signal shaft is provided with a spline hole, and a spline shaft is provided at the center of the extended signal output gear. After the spline shaft is inserted into the spline hole, the extended signal output gear and the extended signal shaft are linked.

[0007] The spline hole and spline shaft have the same taper.

[0008] The aforementioned extended signal output gears are provided in multiple ways, and an extended signal circuit board is installed on each extended signal output gear.

[0009] The extended signal output gear has a spline hole, a spline shaft is provided on one side of the center of the extended signal output gear, and a spline hole is provided on the other side. When the spline shafts of two adjacent extended signal output gears are inserted into the spline holes, the two extended signal output gears are linked together.

[0010] This invention is applicable to various types of tap changers. In addition to the main signal output, it can be expanded to have multiple independent signal outputs to meet the needs of the tap changer's electric mechanism for multiple independent signals. It has the advantages of simple structure and convenient operation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the present invention.

[0012] Figure 2 This is a schematic diagram of the structure of the present invention after the casing is removed.

[0013] Figure 3 This is a schematic diagram of the planar structure of the present invention after the box body is removed.

[0014] Figure 4 for Figure 3 AA sectional view.

[0015] Figure 5 for Figure 3 BB cross-sectional view. Detailed Implementation

[0016] like Figure 1 , Figure 2 , Figure 3As shown, this invention relates to a tap changer control box with multiple independent signal outputs. It includes a housing 20, within which an action indicator shaft 10 and a gear position indicator shaft 30 are inserted. The action indicator shaft 10 is linked to the output shaft of the control box. A gear position pinion 11 is provided on the action indicator shaft 10, and a gear position gear 31 is provided on the gear position indicator shaft 30, capable of meshing with a single tooth of the pinion 11. Therefore, when the tap changer shifts gears, the pinion 11 drives the gear position gear 31 to rotate. Since the pinion 11 has only one tooth, one rotation of the action indicator shaft 10 corresponds to only one tooth rotation in the gear position gear 31. A main signal gear 32 is also provided on the gear position indicator shaft 30, and a signal circuit board is provided on the main signal gear 32 for real-time output of the gear position signal.

[0017] like Figure 4 As shown, a transmission gear 34 is provided at the bottom of the gear position indicator shaft 30. An extension signal shaft 40 is also inserted into the housing 20. An extension gear 43 that meshes with the transmission gear 34 is provided on the extension signal shaft 40, so that the extension signal shaft 40 and the gear position indicator shaft 30 are linked. An extension signal output gear 42 and an extension signal circuit board 41 are installed on the extension signal shaft 40. The extension signal output gear 42 can add a real-time output of an independent signal. A gear position bearing 33 and an extension bearing 44 are embedded in the housing 20. The gear position indicator shaft 30 is mounted on the gear position bearing 33, and the extension signal shaft 40 is mounted on the extension bearing 44. This reduces friction and ensures concentricity of rotation.

[0018] like Figure 5 As shown, the bottom of the extended signal shaft 40 has a splined hole 421, and a splined shaft 422 is provided at the center of the extended signal output gear 42. After the splined shaft 422 is inserted into the splined hole 421, the extended signal output gear 42 is linked with the extended signal shaft 40. The splined hole 421 and the splined shaft 422 have the same taper, which facilitates the installation of the extended signal output gear 42.

[0019] Multiple extended signal output gears 42 are provided, and an extended signal circuit board 41 is mounted on each extended signal output gear 42. Each extended signal output gear 42 has a splined hole 421. A splined shaft 422 is provided on one side of the center of each extended signal output gear 42, and a splined hole 421 is provided on the other side. When the splined shafts 422 of two adjacent extended signal output gears 42 are inserted into the splined holes 421, the two extended signal output gears 42 are linked, allowing multiple extended signal output gears 42 to rotate synchronously and output multiple sets of independent signals.

[0020] This invention is applicable to various types of tap changers. In addition to the main signal output, it can be expanded to have multiple independent signal outputs to meet the needs of the tap changer's electric mechanism for multiple independent signals. It has the advantages of simple structure and convenient operation.

Claims

1. A tap changer control box with multiple independent signal outputs, comprising a housing, an action indicator shaft and a gear position indicator shaft inserted within the housing, the action indicator shaft being linked to the output shaft of the control box, a gear position pinion gear being provided on the action indicator shaft, a gear position gear being provided on the gear position indicator shaft capable of meshing with a single tooth of the gear position pinion gear, and a main signal gear being provided on the gear position indicator shaft, characterized in that... A transmission gear is provided at the bottom of the gear position indicator shaft, and an extension signal shaft is also inserted through the housing. An extension gear that meshes with the transmission gear is provided on the extension signal shaft, so that the extension signal shaft and the gear position indicator shaft are linked together. An extension signal output gear and an extension signal circuit board are installed on the extension signal shaft.

2. The tap changer control box with multiple independent signal outputs according to claim 1, characterized in that... The bottom of the extended signal shaft is provided with a spline hole, and a spline shaft is provided at the center of the extended signal output gear. After the spline shaft is inserted into the spline hole, the extended signal output gear and the extended signal shaft are linked.

3. The tap changer control box with multiple independent signal outputs according to claim 2, characterized in that... The spline hole and spline shaft have the same taper.

4. The tap changer control box with multiple independent signal outputs according to claim 1, characterized in that... The aforementioned extended signal output gears are provided in multiple ways, and an extended signal circuit board is installed on each extended signal output gear.

5. The tap changer control box with multiple independent signal outputs according to claim 4, characterized in that... The extended signal output gear has a spline hole, a spline shaft is provided on one side of the center of the extended signal output gear, and a spline hole is provided on the other side. When the spline shafts of two adjacent extended signal output gears are inserted into the spline holes, the two extended signal output gears are linked together.

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